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Overview
Comment:release 2.1.6 {2002 03 07}
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User & Date: pooryorick 2015-10-02 03:05:56
Context
2015-10-02
03:07
release 2.2.2 {2003 05 09} check-in: ee325c8432 user: pooryorick tags: release-2-1-6
03:05
release 2.1.6 {2002 03 07} check-in: 7b49ef72bc user: pooryorick tags: release-2-1-6
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release 2.0.7 {2001 03 16} Leaf check-in: 7e3a392c77 user: pooryorick tags: release-2-0-7
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Changes to snack/README.

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Snack v2.0 - a sound toolkit for scripting languages
Snack v2.1 - a sound toolkit for scripting languages

Kåre Sjölander <kare@speech.kth.se>



Introduction
-------------------------------------------------------------------

Snack is a sound processing toolkit designed as an extension
to a scripting language. Snack currently works with the scripting
languages Tcl/Tk and Python.
Snack has commands to play, record, process, and visualize sound.
Snack supports in-memory sound objects, file based
audio, and streaming audio. It handles fileformats such as WAV, AU, AIFF,
Snack provides high level sound objects, with flexible storage management,
and streaming support. It handles most common sound file formats.
and MP3.
The visualization canvas item types update in real-time and can output
postscript. The same scripts run on Unix (Linux, Solaris, HP-UX, IRIX,
FreeBSD, NetBSD), Macintosh, and Windows 95/98/NT/2000. It is also possible
FreeBSD, NetBSD), Macintosh, and Windows 95/98/NT/2000/XP. It is also possible
to run scripts embedded in web pages through the use of the Tcl plug-in.
Several example scripts can be found in the demos directory.

For more information on Tcl/Tk and Python see
Tcl/Tk: http://dev.scriptics.com/
Tcl/Tk: http://tcl.activestate.com/
Python: http://www.python.org/

In order to use Snack you must have Tcl and Tk version 8.0 or later. Always 
use the latest stable release, currently 8.3.2, which can be downloaded from 
ftp://ftp.scriptics.com/pub/tcl/.
use the latest stable release, currently 8.3.4, which can be downloaded from 
ftp.activestate.com/ActiveTcl/html/.

Tcl/Tk is often included with Python distributions. Snack has been tested
with Python 1.5.2 - 2.0 on Linux and Windows. See the Python
with Python 1.5.2 - 2.1 on Linux and Windows. See the Python
section below.

The Snack package has been tested on the following platforms:
Windows 95/98/NT/2000
Linux 2.0.35 (OSS 3.5) - 2.2.14 (OSS 3.8.2) (x86 and PowerPC)
Windows 95/98/NT/2000/XP
Linux 2.0.35 (OSS 3.5) - 2.4.3 (OSS 3.8.2) (x86 and PowerPC)
SunOS 5.5.1 (Sparc and x86), Solaris 8 (Sparc)
HP-UX B.10.20
HP-UX B.10.20/11.00
IRIX 6.2, 6.3 & 6.4 (even runs under SoftWindows, although slowly)
NetBSD-current/i386 using the OSS emulation library
BSD/OS-4.1
MacOS 8.6

Make sure you have the latest Snack version available at
http://www.speech.kth.se/snack/ before proceeding with the installation.



Compilation instructions for Snack on Unix
-------------------------------------------------------------------

You must have Tcl/Tk installed on your system. Both Tcl and Tk must have
been configured with the "--enable-shared" flag at build time (this is 
default for the 8.3 versions). Build them before Snack.

Unpack Snack and change directory to the snack2.0.7/unix directory.
Unpack Snack and change directory to the snack2.1.6/unix directory.

Type "./configure".

If you get this error message "Can't find Tcl configuration definitions",
you have to specify their locations using the options "--with-tcl" and
"--with-tk" when running configure. For example, use 
"--with-tcl=/usr/lib --with-tk=/usr/lib" if Tcl/Tk was
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contains the Tcl header file (tcl.h). The same goes for TK_INCPATH (tk.h). 
XINCLUDES should be the path to the directory containing the X11 include
files.

Summary in case you download Tcl, Tk, and Snack and build from scratch:
You should place the distributions in the same directory and unpack them.
Build Snack using the following commands:
cd tcl8.3.1/unix
cd tcl8.3.4/unix
./configure --enable-shared
cd ../../tk8.3.1/unix
cd ../../tk8.3.4/unix
./configure --enable-shared
cd ../../snack2.0.7/unix
cd ../../snack2.1.6/unix
./configure
make

If you use Tcl/Tk 8.0 to 8.0.5 you change the last configure to
configure --disable-stubs



Testing
-------------------------------------------------------------------

When you have succesfully compiled Snack it's time to look at the demos.
In order to run these you will have to set the environment variable 
TCLLIBPATH to the directory containing the Snack library files (you don't 
need this step if you install Snack as described below). If you have 
compiled Snack in /u/kare/snack2.0.7/unix, this would be:
compiled Snack in /u/kare/snack2.1.6/unix, this would be:

setenv TCLLIBPATH /u/kare/snack2.0.7/unix
setenv TCLLIBPATH /u/kare/snack2.1.6/unix

Change to the demos/tcl/ directory and type ./widget.tcl:

cd ../demos/tcl/
./widget.tcl

this runs the Snack widget demonstration.
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make install



Compilation instructions for Snack on Windows
-------------------------------------------------------------------

The workspace and project files necessary to build Snack on Windows are
in the win directory of the source distribution.
The MSVC++ workspace and project files necessary to build Snack on Windows
are located in the win directory of the source distribution.

In order to use Snack you will have to install Tcl/Tk 8.3 first, don't forget
to tick the box to install include and library files.
In order to use Snack you will have to install Tcl/Tk 8.3 first.

Snack's project files are set up for use with Tcl installed in C:\Tcl\, it
might be easiest to change such paths by editing all *.dsp files in a text
editor.
Don't forget to copy the files snack.tcl and pkgIndex.tcl.dll from the
unix directory to C:\Tcl\lib\snack2.1\ and rename the last file pkgIndex.tcl



Using Snack with Python
-------------------------------------------------------------------

Snack must currently be used in conjunction with Tkinter. You need to have a
matching installation of Snack and Tcl. For example, Python 1.5.2 uses
Tcl8.0.5 and Python 1.6-2.1 uses Tcl8.3 on Windows. For Unix you have to
edit Modules/Setup before building Python to specify which Tcl version to use.
Tcl8.0.5 and Python 1.6-2.0 uses Tcl8.3. You can check this by typing the
following lines at the Python prompt:
The default is Tcl8.0. You can check this by typing the following lines
at the Python prompt:

import Tkinter
Tkinter.Tk().tk.eval('info tclversion')

Snack is accessed using the tkSnack module located in the python directory.
You need to put the file tkSnack.py in your Python path. 

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copied to "/usr/local/lib/netscape/tclplug/2.0/".
If you have placed the Netscape plug-in somewhere else (e.g. locally in 
$HOME/.netscape/) use:

./configure --enable-plugin --with-mozilla=$SOMEWHERE

You can also simply copy the files yourself to get something similar to this:
/usr/local/lib/netscape/tclplug/2.0/snack2.0/unix/libsnack.sl
/usr/local/lib/netscape/tclplug/2.0/snack2.0/unix/libsound.sl
/usr/local/lib/netscape/tclplug/2.0/snack2.0/unix/pkgIndex.tcl
/usr/local/lib/netscape/tclplug/2.0/snack2.0/unix/snack.tcl
/usr/local/lib/netscape/tclplug/2.0/snack2.1/unix/libsnack.sl
/usr/local/lib/netscape/tclplug/2.0/snack2.1/unix/libsound.sl
/usr/local/lib/netscape/tclplug/2.0/snack2.1/unix/pkgIndex.tcl
/usr/local/lib/netscape/tclplug/2.0/snack2.1/unix/snack.tcl

Currently you need to set this environment variable before starting Netscape:
setenv TCL_PLUGIN_WISH 1

In some cases this may also be necessary:
setenv NPX_PLUGIN_PATH $HOME/.netscape/plugins/



Using Snack with NIST/Sphere file formats
-------------------------------------------------------------------

It is possible to configure Snack to create an additional package for
handling the NIST/Sphere file formats. Use the configure option
--with-nist=DIR to specify the location of the NIST/Sphere distribution,
handling the NIST/Sphere file formats. Use the configure options
--with-nist-include and --with-nist-lib to specify the locations of
the corresponding directories of the NIST/Sphere distribution,
which can be downloaded at
ftp://jaguar.ncsl.nist.gov/pub/sphere_2.6a.tar.Z. In the Sphere
distribution you will have to modify the file src/scripts/install.sh and add
the compilation flag to create position independent code in some cases. Look
at the Snack Makefile for these.

On HP-UX with HP cc use: -Ae +z

Linux users should specify platform: 10 (Custom),
compiler flags: -O -Wall -fPIC, architecture: INTEL,and comment the
line "extern char *sys_errlist[];" in nist/src/lib/sp/exit.c
See SphereFile.txt for more info.

Windows users can get a compiled dll at
http://www.speech.kth.se/~kare/libsnacksphere.dll.
Put it in ..Tcl\lib\Snack2.0 (together with libsnack.dll).
Windows users can get a compiled dll at the address
http://www.speech.kth.se/~kare/libsnacksphere.dll
Put it in ..Tcl\lib\Snack2.1 (together with libsnack.dll).

Linux users get a compiled library at the address
http://www.speech.kth.se/~kare/libsnacksphere.so
Put it in the Snack installation directory (together with libsnack.so).



Using Snack with the OGG/Vorbis file format
-------------------------------------------------------------------

It is possible to configure Snack to create an additional package for
handling the OGG/Vorbis file format. Use the configure options
--with-ogg-include and --with-ogg-lib to specify the locations of an
existing OGG/Vorbis installation.
More information about OGG/Vorbis available at http://www.vorbis.com/

Windows users can get a compiled dll at the address
http://www.speech.kth.se/~kare/ogg.tar.gz
Put libsnackogg.dll in ..Tcl\lib\Snack2.1 (together with libsnack.dll).

Linux users can get a compiled library at the address
http://www.speech.kth.se/~kare/ogg.tar.gz
Put libsnackogg.so in the Snack installation directory (together 
with libsnack.so).

When building Ogg/Vorbis from source on Unix note that some modifications
to the Makefiles might be necessary. Specify
"AM_CPPFLAGS=-I$prefix/include" "LDFLAGS=-L$exec_prefix/lib"
to get them to find their own installed headers and libraries.
On Solaris force libvorbis to use the native compiler and add
-Dalloca=__builtin_alloca
to prevent the system from using a non-existing alloca.



Dynamic linking problems
-------------------------------------------------------------------

(Sun, Linux, and SGI)
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Richard Ross-Langley
Uwe Koloska
Kevin Russell
Nicolas Garbe
Tom Wilkason
Jonas Ekeroot
Peter Kabal
Ted Dunning
Andreas Kupries
Erik Allaert
Christian Wegehaupt

Changes to snack/changes.

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3/21/01 (bug fix) Fixed problem for spectrogram canvas items that caused a crash in some cases.

3/22/01 (bug fix) Corrected AU file format handler which incorrectly handled Lin8 files as Lin8Offset.

3/23/01 (enhancement) Added read support for files with double (8-byte) samples to AU and WAV file format handlers.

3/23/01 (bug fix) Fixed problems reading sound files containing float samples.

3/27/01 (bug fix) Removed unnecessary limit on the number of channels for audio I/O on the SGI platform.

3/27/01 (bug fix) Fixed problem with data copying that sometimes occured when reallocating from a small size to a much larger one.

3/28/01 (bug fix) Corrected out of bounds problem in the pitch command.

4/10/01 (bug fix) Corrected bug in the snacksphere package for sound files containing fewer samples than specified in the header.

4/15/01 (new feature) New filter type: iir, which implements IIR/FIR filtering. (Dunning)

4/15/01 (new feature) LPC analysis support added in section canvas item and in dBPowerSpectrum command. (Rank)

4/15/01 (enhancement) Slight beautification of Waveform postscript. (Rank)

----------------- Released 2.1b1, 4/17/01 -----------------------

4/24/01 (new feature) Added support for the Ogg/Vorbis file format (SnackOgg.c) through the optional package "snackogg".

5/1/00 (bug fix) Fixed bug in the map filter that occured when re-configuring it with only one value during playback of multi-channel sounds.

5/3/01 (new feature) Added Ogg/Vorbis format support for writing files and for streaming play/record.

5/8/01 (new feature) Added support for encoding in the Ogg/Vorbis file format.

5/8/01 (new feature) Added streaming support for the Ogg/Vorbis file format.

5/8/01 (new feature) Added configureProc member to Snack_FileFormat struct. This makes it possible to configure/get file format specific options, e.g. -bitrate for MP3 format or -nominalbitrate for Ogg.

5/8/01 (feature change) Added objc/objv parameters to putHeaderProc() which allows for file format specific options. Procedure now returns TCL_OK/TCL_ERROR.

5/8/01 (feature change) Changed parameter of writeSamplesProc() and added implementation to support its use in WriteSound().

----------------- Released 2.1b2, 5/9/01 -----------------------

5/11/01 (enhancement) The wrap.tcl executable generator can now compile scripts that use the packages snackogg and snacksphere.

5/20/01 (enhancement) Updated sources and project file for Macintosh to work with CodeWarrior 6.0 and Tcl/Tk8.3.3.

5/20/01 (new feature) Added demos generator.tcl and scale.tcl.

----------------- Released 2.1, 5/21/01 -----------------------

6/6/01 (bug fix) Fixed bug in header parsing of ESPS files (.sd).

6/7/01 (change) Waveform shape files are now saved with a sample rate of 200 in order to conform to the shape sound command.

6/7/01 (change) Modifications to the shape sound command to make it conform to the shape files generated by the waveform canvas items. (Barras)

6/13/01 (new feature) Added demos generator.py and scale.py.

6/18/01 (enhancement) Snack save dialogs now append .wav etc on the Macintosh.

----------------- Released 2.1.1, 6/21/01 -----------------------

6/29/01 (bug fix) Fixed bug during clean-up which occured for the command sequence "sound record", "exit" (Snack_ExitProc()), followed by after handler with "sound destroy".

7/2/01 (enhancement) Added read support for AU sound files with header specifying dataSize = -1.

7/2/01 (change) Changed the Windows binary installer to default to C:\Tcl which is what ActiveTcl-8.3.3 uses.

7/4/01 (bug fix) Fixed problem reading some CSL sample files (.nsp).

7/20/01 (new feature) New sound command 'power', which is used to compute windowed log power values for a sound.

----------------- Released 2.1.2, 7/20/01 -----------------------

8/1/01 (bug fix) Fixed byte order problem with RAW sound streams.

8/1/01 (bug fix) Fixed problem with RAW sound streams which caused a hang, during play, if no samples were received.

8/3/01 (enhancement) The iir filter now supports multi-channel sound.

8/3/01 (new feature) New demo, pitch.tcl.

8/3/01 (new feature) The Snack script compiler, wrap.tcl, now works out-of-the-box on Windows, with the binary distribution, and for Linux with the source distribution, because freeWrap binaries were included.

8/6/01 (bug fix) Fixed memory leak for sounds linked to disk files that occurred for repeteated configure/play sequences.

8/13/01 (change) Changed the Windows binary installer to use the Tcl installation directory from ActiveState's registry entry.

8/13/01 (bug fix) Added missing library definition for the Ogg/Vorbis encoder in configure.in.

----------------- Released 2.1.3, 8/14/01 -----------------------

8/15/01 (enhancement) Overhaul of the configure script. New options --with-nist-include, --with-nist-lib, --with-ogg-include, and --with-ogg-lib replace --with-nist and --with-ogg, in order to facilitate multi-platform builds. Also, --exec-prefix is now used as intended.

10/25/01 (bug fix) Minor fix in the MP3 decoder for gcc v2.96.

10/25/01 (bug fix) CSL files are now written with a correct block size in FORMDS16. (Kabal)

10/25/01 (enhancement) Support for reading AIFF files containing samples with non multiple of 8 number of bits. (Kabal)

10/25/01 (enhancement) Support for reading WAV files with formats that use WAVE_FORMAT_EXTENSIBLE. (Kabal)

10/26/01 (enhancement) Updated the MSVC++ project files match ActiveTcl's directory structure.

10/26/01 (new feature) New demo, phonetogram.tcl.

----------------- Released 2.1.4, 10/29/01 -----------------------

11/9/01 (bug fix) Fixed problem in the configure script which caused Snack to be built without the TCL_81_API flag, which in turn caused problems for the sound data command.

1/9/02 (enhancement) The generator filter now works correctly on multi-channel sounds through channel duplication.

1/10/02 (new feature) New demo, generator2.tcl.

1/9/02 (enhancement) Support for the stereo-only devices.

1/21/02 (enhancement) Configure script now support HP-UX 11.x.

2/4/02 (new feature) Support for variable bit rate MP3 files with XING headers. (Wilkason)

2/4/02 (bug fix) Fixed crash on HP-UX machines without audio server. (Allaert)

----------------- Released 2.1.5, 2/5/02 -----------------------

2/22/02 (enhancement) Support for 96kHz sample rate on Windows/Linux.

2/25/02 (enhancement) Playback support for normalized float, [1.0, -1.0], sounds.

2/27/02 (bug fix) Fixed problem with the 'filter' command and the -end option.

2/28/02 (new feature) New filter type: fade, which implements linear/logarithmic/exponential fade-in/-out.

----------------- Released 2.1.6, 3/4/02 -----------------------

3/6/02 (change) Removed automatic zero-padding of ESPS files, the start_time field can now be accessed using "sndName configure -start_time" instead.

Changes to snack/demos/python/MinSect.py.



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#! /usr/bin/env python

from Tkinter import *
from tkSnack import *

root = Tkinter.Tk()

initializeSnack(root)

Changes to snack/demos/python/MinSpeg.py.



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#! /usr/bin/env python

from Tkinter import *
from tkSnack import *

root = Tkinter.Tk()

initializeSnack(root)

Changes to snack/demos/python/MinWave.py.



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#! /usr/bin/env python

from Tkinter import *
from tkSnack import *

root = Tkinter.Tk()

initializeSnack(root)

Changes to snack/demos/python/echo.py.



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#! /usr/bin/env python

from Tkinter import *
from tkSnack import *

root = Tkinter.Tk()

initializeSnack(root)

Added snack/demos/python/generator.py.






























































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#! /usr/bin/env python

from Tkinter import *
from tkSnack import *

root = Tkinter.Tk()

initializeSnack(root)
"""AudioControllerSingleton().playLatency(100)"""

s = Sound()

filt = Filter('generator', 440.0)
        
def play():
   s.stop()
   s.play(filter=filt)
        
def stop():
   s.stop()        

def config(arg):
   type = var.get()
   if var.get() == "sine" :
      shape = 0.0
   elif var.get() == "rectangle" :
      shape = 0.5
   elif var.get() == "triangle" :
      shape = 0.5
   elif var.get() == "sawtooth" :
      type = "triangle"
      shape = 0.0
   else :
      shape = 0.0
   filt.configure(s1.get(), s2.get(), shape, type, -1)

f = Frame(root)
f.pack()

s1 = Scale(f, from_=4000, to=50, label="Frequency", length=200, command=config)
s1.pack(side='left')

s2 = Scale(f, from_=32767, to=0, label="Amplitude", length=200, command=config)
s2.pack(side='left')

s1.set(440.0)
s2.set(20000)

var  = StringVar()
var.set("sine")

menu = OptionMenu(root, var, "sine", "rectangle", "triangle", "sawtooth", "noise")
menu.pack()
root.bind_all("<Button1-ButtonRelease>", config)

fb = Frame(root)
fb.pack(side='bottom')
Button(fb, bitmap='snackPlay', command=play).pack(side='left')
Button(fb, bitmap='snackStop', command=stop).pack(side='left')

root.mainloop()

Added snack/demos/python/notescale.py.






















































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#! /usr/bin/env python

from Tkinter import *
from tkSnack import *

root = Tkinter.Tk()

initializeSnack(root)
"""AudioControllerSingleton().playLatency(100)"""

def playbeep(freq):
   s.stop()
   filt.configure(freq)
   s.play(filter=filt)

def beepC4():
   playbeep(261.6)

def beepD4():
   playbeep(293.7)

def beepE4():
   playbeep(329.7)

def beepF4():
   playbeep(349.3)

def beepG4():
   playbeep(392.1)

def beepA4():
   playbeep(440.0)

def beepB4():
   playbeep(493.9)

def beepC5():
   playbeep(523.3)

s = Sound()

filt = Filter('generator', 440.0, 30000, 0.0, 'sine', 8000)
        
Button(root, text='C4', command=beepC4).pack(side='left')
Button(root, text='D4', command=beepD4).pack(side='left')
Button(root, text='E4', command=beepE4).pack(side='left')
Button(root, text='F4', command=beepF4).pack(side='left')
Button(root, text='G4', command=beepG4).pack(side='left')
Button(root, text='A4', command=beepA4).pack(side='left')
Button(root, text='B4', command=beepB4).pack(side='left')
Button(root, text='C5', command=beepC5).pack(side='left')

root.mainloop()

Added snack/demos/python/oggplay.py.























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#! /usr/bin/env python
#
# Usage: oggplay.py file.ogg
#
# Note: this script will also play audio files in any other format supported
# by tkSnack

import sys
from Tkinter import *
from tkSnack import *

initializeSnack(Tkinter.Tk())

# Load the Ogg/Vorbis format package

Tk().tk.eval('package require snackogg')

if sys.argv[1:]:
	snd = Sound(file=sys.argv[1])
	snd.play(blocking=1)
else:
	print "Usage: oggplay.py file.ogg"

Added snack/demos/python/polarspec.py.




























































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#! /usr/bin/env python

from Tkinter import *
from tkSnack import *
from math import *

root = Tkinter.Tk()

initializeSnack(root)
snd = Sound()

w = 300
h = 300
s = 100
n = 1024
type = StringVar()
type.set("FFT") 

def stop():
    snd.stop()
    root.after_cancel(id)

def draw():
    if (snd.length() > n) :
        pos = snd.length() - n
        spec = snd.dBPowerSpectrum(start=pos,fftlen=n,winlen=n,analysistype=type.get())
        coords=[]
        f=0.0001
        for val in spec :
            v = 6.282985 * log(f)/log(2.0)
            a = 1.4*(val+s)
            x = w/2+a*cos(v)
            y = h/2+a*sin(v)
            coords.append(x)
            coords.append(y)
            f = f + 16000.0 / n
        c.delete('polar')
        c.create_polygon(coords, tags='polar', fill='green')
    if (snd.length(unit='sec') > 20) :
        stop()
    id = root.after(100,draw)
        
def start():
    pos = 0
    snd.record()
    c.update_idletasks()
    id = root.after(100,draw)

c = SnackCanvas(height=h, width=w, bg='black')
c.pack()
f = Frame()
f.pack()
Button(f, bitmap='snackRecord', fg='red', command=start).pack(side='left')
Button(f, bitmap='snackStop', command=stop).pack(side='left')
Radiobutton(f, text='FFT', variable=type, value='FFT').pack(side='left')
Radiobutton(f, text='LPC', variable=type, value='LPC').pack(side='left')
Button(f, text='Exit', command=root.quit).pack(side='left')

root.mainloop()

Changes to snack/demos/python/python-demos.txt.

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Included Python demos
--------------------------------------------------------------------------

widget.py
The basic Snack demonstrator.

MinWave.py
Minimal waveform example
Minimal waveform example.

MinSect.py
Minimal section example
Minimal section example.

MinSpeg.py
Minimal spectrogram example
Minimal spectrogram example.

echo.py
Demo of echo filter with interactive parameter modification.

sphere.py
Demo that shows how to read NIST/Sphere format files.

polarspec.py
Polar spectrum plot of microphone input signal.

spectrogram.py
Spectrogram plot of microphone input signal.

generator.py
Simple real-time tone generator.

notescale.py
Example of on-the-fly beep generation.

Added snack/demos/python/spectrogram.py.




























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#! /usr/bin/env python

from Tkinter import *
from tkSnack import *

root = Tkinter.Tk()

initializeSnack(root)
snd = Sound()

def stop():
    snd.stop()

def start():
    snd.record()

c = SnackCanvas(height=200, width=400, bg='black')
c.pack()
c.create_spectrogram(1,1,sound=snd,width=400,height=200,pixelspersec=200)

f = Frame()
f.pack()
Button(f, bitmap='snackRecord', fg='red', command=start).pack(side='left')
Button(f, bitmap='snackStop', command=stop).pack(side='left')
Button(f, text='Exit', command=root.quit).pack(side='left')

root.mainloop()

Added snack/demos/python/sphere.py.


























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#! /usr/bin/env python

from Tkinter import *
from tkSnack import *

root = Tkinter.Tk()

initializeSnack(root)

# Load the sphere format package

Tk().tk.eval('package require snacksphere')

snd = Sound()

file = 'test.sph'

print 'reading sphere file \'%s\'' % file
snd.read(file)

print 'playing file \'%s\'' % file
snd.play(blocking=1)

print 'writing wav file \'%s\'' % file
snd.write('new.wav')

Changes to snack/demos/python/widget.py.



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#! /usr/bin/env python

from Tkinter import *
from tkSnack import *

root = Tkinter.Tk()

initializeSnack(root)

Added snack/demos/tcl/CSLwithAB.tcl.

































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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

# This file shows how to handle CSL/NSP files with both A and B data chunks

package require -exact snack 2.1

set filename CSL_file_with_A_and_B_chunks.nsp

# Read in file using Snack's CSL/NSP decoder, which only gets channel A
# This is done in order to determine the number of samples in each channel

snack::sound s -load $filename

set end [expr [s length] - 1]

# Now read channel A by treating the file as raw data skipping initial
# headers and write it out in a file of its own

s read $filename -fileformat raw -skip 60 -end $end

s write channel_A.wav

# Read channel B by skipping channel A and initial headers and write it

s read $filename -fileformat raw -skip [expr 60 + $end * 2 + 8] -end $end

s write channel_B.wav

exit

Changes to snack/demos/tcl/MinSect.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

pack [canvas .c -width 300 -height 300]

snack::sound s -load ex1.wav

.c create section 0 0 -sound s -start 6000 -end 6100 -height 300 -width 300

pack [button .bClose -text Close -command exit]

Changes to snack/demos/tcl/MinSpeg.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

pack [canvas .c -height 200 -width 400]

snack::sound s -load ex1.wav

.c create spectrogram 0 0 -sound s -height 200 -width 400

pack [button .bClose -text Close -command exit]

Changes to snack/demos/tcl/MinWave.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

pack [canvas .c -width 400 -height 100]

snack::sound s -load ex1.wav

.c create waveform 0 0 -sound s -width 400

pack [button .bClose -text Close -command exit]

Changes to snack/demos/tcl/Section.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

set width 300
set height 200
set start 0
set end 48000
set stipple ""
set winlen 256
set fftlen 512
set filename section.ps
set topfr 8000
set maxval 0.0
set minval -80.0
set skip 500
set atype FFT
set order 20
set type Hamming
set wtype Hamming
option add *font {Helvetica 10 bold}

pack [ canvas .c -width 400 -height 250]
pack [ canvas .c2 -height 50 -width 400 -closeenough 5]
pack [ label .l -text "Drag markers with left mouse button"]
pack [ frame .f1] -pady 2
pack [ scale .f1.s1 -variable width -label Width -from 10 -to 400 \
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    -orient horizontal -length 100 -command [list .c itemconf sect -minvalue ]]\
    -side left
pack [ scale .f1.s6 -variable skip -label "Skip" -from 50 -to 500 \
    -orient horizontal -length 100 -command [list .c itemconf sect -skip ]] \
    -side left

pack [ frame .f2i] -pady 2
pack [ label .f2i.lt -text "Type:"] -side left
tk_optionMenu .f2i.cm type Hamming Hanning Bartlett Blackman Rectangle
.f2i.cm.menu entryconfigure 0 -command {.c itemconf sect -windowtype $type}
.f2i.cm.menu entryconfigure 1 -command {.c itemconf sect -windowtype $type}
.f2i.cm.menu entryconfigure 2 -command {.c itemconf sect -windowtype $type}
.f2i.cm.menu entryconfigure 3 -command {.c itemconf sect -windowtype $type}
.f2i.cm.menu entryconfigure 4 -command {.c itemconf sect -windowtype $type}
tk_optionMenu .f2i.at atype FFT LPC
.f2i.at.menu entryconfigure 0 -command {.c itemconf sect -analysistype $atype;.f2i.e configure -state disabled;.f2i.s configure -state disabled}
.f2i.at.menu entryconfigure 1 -command {.c itemconf sect -analysistype $atype;.f2i.e configure -state normal;.f2i.s configure -state normal}
pack .f2i.at -side left

pack [ label .f2i.lo -text "order:"] -side left
entry .f2i.e -textvariable order -width 3

scale .f2i.s -variable order -from 1 -to 40 -orient horiz -length 60 -show no
pack .f2i.e .f2i.s -side left
.f2i.e configure -state disabled
.f2i.s configure -state disabled
bind .f2i.e <Key-Return> {.c itemconf sect -lpcorder $order}
bind .f2i.s <Button1-Motion> {.c itemconf sect -lpcorder $order}

tk_optionMenu .f2i.cm wtype Hamming Hanning Bartlett Blackman Rectangle
for {set i 0} {$i < 5} {incr i} {
  .f2i.cm.menu entryconfigure $i -command {.c itemconf sect -windowtype $wtype}
}
pack .f2i.cm -side left

pack [ label .f2i.lw -text "window:"] -side left
foreach n {32 64 128 256 512} {
    pack [ radiobutton .f2i.w$n -text $n -variable winlen -value $n \
	-command {.c itemconf sect -winlength $winlen}] -side left
}

Changes to snack/demos/tcl/Spectrogram.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

set width 300
set height 200
set pps 300
set bright 0.0
set contrast 0.0
set winlen 128
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pack [ scale .f1.s5 -variable contrast -label Contrast -from -100 -to 100 -res 0.1 -orient hori -length 100 -command {.c itemconf speg -contrast }] -side left

set topfr 8000
pack [ scale .f1.s7 -variable topfr -label Top -from 1000 -to 8000 -orient hori -length 100 -command {.c itemconf speg -topfr }] -side left

pack [ frame .f2] -pady 2
tk_optionMenu .f2.cm type Hamming Hanning Bartlett Blackman Rectangle
.f2.cm.menu entryconfigure 0 -command {.c itemconf speg -windowtype $type}
.f2.cm.menu entryconfigure 1 -command {.c itemconf speg -windowtype $type}
for {set i 0} {$i < 5} {incr i} {
  .f2.cm.menu entryconfigure $i -command {.c itemconf speg -windowtype $type}
.f2.cm.menu entryconfigure 2 -command {.c itemconf speg -windowtype $type}
.f2.cm.menu entryconfigure 3 -command {.c itemconf speg -windowtype $type}
.f2.cm.menu entryconfigure 4 -command {.c itemconf speg -windowtype $type}
}
pack .f2.cm -side left
pack [ label .f2.lw -text "window:"] -side left
foreach n {32 64 128 256 512 1024 2048} {
    pack [ radiobutton .f2.w$n -text $n -variable winlen -value $n\
	    -command {.c itemconf speg -winlength $winlen}] -side left
}

Changes to snack/demos/tcl/SphereTest.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec tclsh8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1
package require snacksphere

snack::debug 0
snack::sound s -debug 0

set path "nistlibs"
set path "nist/lib"
set fileList [glob $path/data/ex*.wav] 

foreach file $fileList { 
    puts "Playing: $file"
    s config -file $file
    s play -block 1
}

Changes to snack/demos/tcl/Waveform.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

set width 400
set height 100
set pps 300
set color black
set stipple ""
set filename waveform.ps

Changes to snack/demos/tcl/aserver.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1
# Try to load optional file format handler
catch { package require snackogg }

snack::debug 0

set port 23654

proc Cmd { sock addr port } {
    global servsock msg

    set cmd [read $sock 4]
    switch $cmd {
	play {
	    set s [snack::sound -debug 0]
	    puts $sock $s ;# return token for this job
	    flush $sock
	    $s config -channel $sock -guessproperties yes
	    $s configure -channel $sock -guessproperties yes
	    $s play -command "[list close $sock]; set msg idle;$s destroy"
	    set msg playing
	}
	stop {
	    set handle [gets $sock] ;# get token (sound name) and stop playback
	    catch { $handle stop }
	    catch { $handle destroy }

Changes to snack/demos/tcl/compose.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

snack::sound s

set f0 [snack::filter map 0.5]
set f1 [snack::filter echo 0.6 0.6 30 0.4]
set f2 [snack::filter echo 0.6 0.6 50 0.3]
set f3 [snack::filter compose $f0 $f1 $f2]

Changes to snack/demos/tcl/cool.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

# An example of how to build a sound application using Snack.
# Can also be used as a base for specialized applications.

package require -exact snack 2.0
package require -exact snack 2.1
# Try to load optional file format handlers
catch { package require snacksphere }
catch { package require snackogg }

# If they are present add new filetypes to file dialogs
set extTypes  {}
set loadTypes {}
set loadKeys  {}
set saveTypes {}
set saveKeys  {}
if {[info exists snack::snacksphere]} {
    lappend extTypes {SPHERE .sph} {SPHERE .wav}
    lappend loadTypes {{SPHERE Files} {.sph}} {{SPHERE Files} {.wav}}
    lappend loadKeys SPHERE SPHERE
}
if {[info exists snack::snackogg]} {
  lappend extTypes  {OGG .ogg}
  lappend loadTypes {{Ogg Vorbis Files} {.ogg}}
  lappend loadKeys  OGG
  lappend saveTypes {{Ogg Vorbis Files} {.ogg}}
  lappend saveKeys  OGG
}
snack::addExtTypes $extTypes
snack::addLoadTypes $loadTypes $loadKeys
snack::addSaveTypes $saveTypes $saveKeys

set v(debug) 0
snack::sound snd -debug $v(debug)
set v(rate) 16000
set v(width) 600
set v(height) 150
set v(pps) 10

Changes to snack/demos/tcl/dbrec.scr.

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This is sentence one
This is sentence two
This is sentence two, which is very much longer than the rest in order to illustrate how the font size adapts to fit the window.
This is sentence three
This is sentence four

Changes to snack/demos/tcl/dbrec.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

# Prompted sentence recording application
 
package require -exact snack 2.0
package require -exact snack 2.1

set rate 16000
snack::sound t -rate $rate
snack::sound s -rate $rate


# dbrec.tcl menus
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snack::levelMeter .f1.lm -width 20 -length 200
label .f1.level -textvariable level

# Arrow key descriptions

frame .f1.f
grid [frame .f1.f.g]
grid [label .f1.f.g.lc -text <Space>=Play -relief raised -bd 3] -row 2 -col 1 -padx 20
grid [label .f1.f.g.lu -text <Up>=Record -relief raised -bd 3] -row 1 -col 3
grid [label .f1.f.g.ll -text <Left>=Prev -relief raised -bd 3] -row 2 -col 2
grid [label .f1.f.g.ld -text <Down>=Stop -relief raised -bd 3] -row 2 -col 3
grid [label .f1.f.g.lr -text <Right>=Next -relief raised -bd 3] -row 2 -col 4
grid [label .f1.f.g.lc -text <Space>=Play -relief raised -bd 3] -row 2 \
  -column 1 -padx 20
grid [label .f1.f.g.lu -text <Up>=Record -relief raised -bd 3] -row 1 -column 3
grid [label .f1.f.g.ll -text <Left>=Prev -relief raised -bd 3] -row 2 -column 2
grid [label .f1.f.g.ld -text <Down>=Stop -relief raised -bd 3] -row 2 -column 3
grid [label .f1.f.g.lr -text <Right>=Next -relief raised -bd 3] -row 2 \
  -column 4

pack .f1.bp .f1.br .f1.pr .f1.ne .f1.be .f1.time .f1.lm .f1.level \
    .f1.f -side left
bind .f1.br <ButtonPress-1>   Record
bind .f1.br <ButtonRelease-1> Stop


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#.f1.br configure -state normal
#bind . <KeyRelease-Up> Record
#bind . <KeyPress-Down> Stop


# Use session number specified on command line, otherwise use next slot

if {$argv != ""} {
if {[info exists argv] && $argv != ""} {
  if {[string match "-b" [lindex $argv 0]]} {
    OpenBrowser
    set argv [lreplace $argv 0 0]
  }
  set session [lindex $argv end]
  if {$session != ""} {
    set ::dir [format "sn%04d" $session]

Changes to snack/demos/tcl/echo.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

set f [snack::filter echo 0.6 0.6 30 0.4 50 0.3]

snack::sound s

pack [frame .f]

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proc Config {args} {
  global f v
  $f configure $v(iGain) $v(oGain) $v(delay1) $v(decay1) $v(delay2) $v(decay2)
}

proc Play {} {
  global f
  s stop
  s play -filter $f
  s play -filter $::f
}

proc Load {} {
  set file [snack::getOpenFile -initialdir [file dirname [s cget -file]]]
  if {$file == ""} return
  s config -file $file
}

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

# there is no way (?) to find out from Tk if we can display UNICODE IPA
# but it seems to be standard on windows installations
if {[string match windows $tcl_platform(platform)]} {set UNICODE_IPA 1}

switch $tcl_platform(platform) {
 windows {
  proc milliseconds { } {clock clicks}
 }
 unix {
  proc milliseconds { } {expr {[clock clicks]/1000}}
 }
}


set vowels(sw) {
 O: u      300 600 2350 3250
 O  \u028a 350 700 2600 3200
 Å: o      400 700 2450 3250
 Å  \u0254 500 850 2550 3250
 A: \u0251 600 950 2550 3300
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 > \u0254 590 880 2540 {}
 U \u028a 450 1030 2380 {}
 u u 310 870 2250 {}
}

set vowels(lang) us
 
proc vok4Create {w} {
proc vok4Create {w {wid 200} {hei 200}} {
 upvar #0 $w a
 frame $w -width 200 -height 200
 frame $w -width $wid -height $hei
 pack [canvas $w.c -bg black] -fill both -expand 1
 pack propagate $w 0
 set a(xm) 20
 set a(ym) 20
 set a(F10) 800
 set a(F11) 200
 set a(F20) 2300
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 $w.m add radiobutton -variable vowels(lang) -value us \
   -command [list vok4Config $w] -label "American vowels (after Ladefoged)"
 $w.m add radiobutton -variable vowels(lang) -value NIL \
   -command [list vok4Config $w] -label "Don't display vowels"
 
 # trailInit $w 10
 
 bind $w.c <ButtonPress-1> "Play;vok4Move $w %x %y"
 bind $w.c <ButtonPress-1> "vok4Move $w %x %y;Play"
 bind $w.c <B1-Motion> [list vok4Move $w %x %y]
 bind $w.c <ButtonRelease-1> "Stop"
 bind $w.c <Configure> [list vok4Config $w %w %h]
 bind $w.c <ButtonPress-3> [list tk_popup $w.m %X %Y]
 return $w
}

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   set y [expr {$a(y0)+($a(y1)-$a(y0))*($f1-$a(F10))*1.0/($a(F11)-$a(F10))}]
   $w.c create text $x $y -font "times 16" -anchor c -text $sym -fill gray -tags sym
  }
 }
}

proc vok4Move {w x y} {
# puts [info level 0]
 upvar #0 $w a
 
 if $::v(on) {
  set f1 [expr {int($a(F10)+($a(F11)-$a(F10))*($y-$a(y0))*1.0/($a(y1)-$a(y0)))}]
  set f2 [expr {int($a(F20)+($a(F21)-$a(F20))*($x-$a(x0))*1.0/($a(x1)-$a(x0)))}]
  set ::v(f1) $f1
  set ::v(f2) $f2
  Config
  set a(curx) $x
  set a(cury) $y
  #  trailUpdate $w
 set f1 [expr {int($a(F10)+($a(F11)-$a(F10))*($y-$a(y0))*1.0/($a(y1)-$a(y0)))}]
 set f2 [expr {int($a(F20)+($a(F21)-$a(F20))*($x-$a(x0))*1.0/($a(x1)-$a(x0)))}]
 set ::v(f1) $f1
 set ::v(f2) $f2
 Config
 set a(curx) $x
 set a(cury) $y
 #  trailUpdate $w
 }
 return ""
}

proc updatePreview {} {
 $::v(pGen) configure \
   $::v(g,freq) $::v(g,ampl) [expr 0.01*$::v(g,shape)] $::v(g,type) 1024
 $::v(pF1) configure $::v(f1) $::v(b1)
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}

proc Play {} {
 set ::v(on) 1
 s stop
 s play -filter $::v(All)
 updatePreview
 set ::v(tstart) [milliseconds]
 #  updateTracks
 .f1.b config -relief sunken
}

proc Stop {} {
 s stop
 set ::v(on) 0
 .f1.b config -relief raised
}

proc Load {} {
 set file [snack::getOpenFile]
 if {$file != ""} {s read $file}
}

proc updateTracks {} {
 set tt 50
 set now [milliseconds]
 set then $::v(tstart)
 set dt [expr 1.0*([milliseconds]-$::v(tstart))]
 #set ::v(g,freq) [expr 100+100*(1.0*$dt/$tt)*exp(-$dt/$tt)]
 set ::v(g,freq) [expr {100+2*cos(2*3.1415*$dt/$tt)}]

 Config

 if $::v(on) {
  after 50 updateTracks
 }
}

proc labeledScale {w args} {
 array set a {-valwidth 4 -labwidth 8}
 array set a $args
 catch {set a(-text) $a(-label)}

 frame $w
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 catch {destroy $w}
 toplevel $w
 wm title $w "About: Formant Synthesis Demo"
 set text " This application demonstrates formant-based synthesis
 of vowels in real time, in the spirit of Gunnar Fant's 
 Orator Verbis Electris (OVE-1) synthesizer of 1953.

 Set source and filter parameters to the left. Click and 
 drag in the \"vowel space\" to the right to hear the vowels. 
 Set source and filter parameters at the top. Click and 
 drag in the \"vowel space\" to hear the vowels. 
 Right-click to select target language for vowel symbols.
 
 Waveform and power spectrum of source (red) and 
 output signal (green) are displayed at the bottom.
 Power spectrum of source (red) and output signal (green) are 
 to the right, waveforms are displayed at the bottom.
 
 The source type \"sampled\" will use a sound file 
 containing a single period of a waveform as voice source.

 Copyright © 2000 Jonas Beskow
 Centre for Speech Technology
 KTH, Stockholm"
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.m.file add command -label Exit -command exit
.m.help add command -label About... -command About
. configure -menu .m

# Generator GUI

frame .f1 -relief groove -bd 2
grid .f1 -sticky news -padx 5 -pady 5
grid .f1 -row 0 -column 0 -sticky news -padx 5 -pady 5
label .f1.l -text Source -bg red -anchor w
tk_optionMenu .f1.gt v(g,type) rectangle triangle sine sampled noise
button .f1.b -bitmap snackPlay -command Play
button .f1.c -bitmap snackStop -command Stop

labeledScale .f1.gf -label "Freq." -variable v(g,freq) -from 0.0 -to 1000 -resolution 1.0 -orient horiz -command Config
labeledScale .f1.ga -label "Ampl." -variable v(g,ampl) -from 0.0 -to 6000 -resolution 1.0 -length 160 -orient horiz -command Config
labeledScale .f1.gs -label "Shape" -variable v(g,shape) -from 0.0 -to 100 -resolution 1.0 -length 160 -orient horiz -command Config

grid .f1.l .f1.gt .f1.b .f1.c -sticky we -padx 5
grid .f1.gf -columnspan 4 -sticky we
grid .f1.ga -columnspan 4 -sticky we
grid .f1.gs -columnspan 4 -sticky we
grid columnconfigure .f1 0 -weight 1

grid rowconfigure .f1 4 -weight 1
# Formant filter GUI

frame .f2 -relief groove -bd 2
grid .f2 -sticky news -padx 5 -pady 5
grid .f2 -row 0 -column 1 -sticky news -padx 5 -pady 5
label .f2.l -text "Formants" -bg green -anchor w
grid .f2.l -columnspan 5 -sticky we -padx 5 -pady 5
label .f2.lf -text "Frequency" -anchor w
label .f2.lfu -text "Hz "
label .f2.lb -text "Bandwidth" -anchor w
label .f2.lbu -text "Hz "
grid .f2.lf -row 1 -col 1 -sticky w
grid .f2.lfu -row 1 -col 2 -sticky w
grid .f2.lb -row 1 -col 3 -sticky w
grid .f2.lbu -row 1 -col 4 -sticky w
grid .f2.lf -row 1 -column 1 -sticky w
grid .f2.lfu -row 1 -column 2 -sticky w
grid .f2.lb -row 1 -column 3 -sticky w
grid .f2.lbu -row 1 -column 4 -sticky w

for {set i 1} {$i<=4} {incr i} {
 label .f2.l0$i -text F$i -width 2
 scale .f2.f$i -variable v(f$i) -from 0 -to 5000 -resolution 1.0 -orient horiz -command Config -showvalue 0 -bd 1 -width 10
 label .f2.l1$i -textvariable v(f$i) -anchor w -width 4
 scale .f2.b$i -variable v(b${i}) -from 1.0 -to 500 -resolution 1.0 -orient horiz -command Config -showvalue 0 -bd 1 -width 10 -length 80
 label .f2.l2$i -textvariable v(b$i) -anchor w -width 3
 grid .f2.l0$i .f2.f$i .f2.l1$i .f2.b$i .f2.l2$i -sticky news
}
grid columnconfigure .f2 1 -weight 1

set vokh 250
set vokw 275

# Vowel space

vok4Create .voc
grid .voc -row 0 -col 1 -rowspan 2 -sticky news
vok4Create .voc $vokw $vokh
grid .voc -row 1 -column 0 -sticky news

# Waveforms preview

# Spectrum section preview
set prew 550

snack::sound preview1
snack::sound preview2


set secw $vokw
canvas .c1 -bg black -height 100 -width $prew
grid .c1 -columnspan 2 -sticky news
.c1 create waveform 0 50 -anchor w -sound preview1 -fill red  -height 90 -pixelspersecond 16000
.c1 create waveform 0 50 -anchor w -sound preview2 -fill green  -height 90 -pixelspersecond 16000

set sech $vokh
# Spectrum section preview

canvas .c2 -bg black -height 100 -width $prew
grid .c2 -columnspan 2 -sticky news
.c2 create section 0 50 -anchor w -sound preview1 -fill red -height 90 -topfrequency 8000 -width $prew -preemphasis 10 -maxval 40 -tags sect
.c2 create section 0 50 -anchor w -sound preview2 -fill green -height 90 -topfrequency 8000 -width $prew -preemphasis 10 -maxval 40 -tags sect
canvas .c2 -bg black -height 100 -width $secw
grid .c2 -row 1 -column 1  -sticky news
.c2 create section 0 0 -sound preview1 -fill red -height $sech -topfrequency 4000 -width $secw -analysistype lpc -tags sect -maxvalue 30
.c2 create section 0 0 -sound preview2 -fill green -height $sech -topfrequency 4000 -width $secw -analysistype lpc -tags sect -maxvalue 30

foreach freq {1 2 3 4 5 6 7 8} {
 set x [expr {$freq*$prew/8.0}]
 .c2 create line $x 0 $x 100 -fill #666666
 .c2 create text $x 0 -anchor ne -text $freq -fill #666666
foreach freq {1 2 3 4} {
 set x [expr {$freq*$secw/4.0}]
 .c2 create line $x 0 $x $sech -fill #999999
 .c2 create text $x 0 -anchor ne -text $freq -fill #999999
}
.c2 create text 0 0 -anchor nw -text kHz -fill #666666
.c2 create text 0 0 -anchor nw -text kHz -fill #999999
.c2 raise sect

# Waveforms preview

set wavw 550
set wavh 90

canvas .c1 -bg black -height 100 -width $wavw
grid .c1 -row 2 -columnspan 2 -sticky news
.c1 create waveform 0 50 -anchor w -sound preview1 -fill red  -height $wavh -pixelspersecond 16000
.c1 create waveform 0 50 -anchor w -sound preview2 -fill green  -height $wavh -pixelspersecond 16000

# Default values

set v(f1) 500
set v(b1) 50
set v(f2) 1500
set v(b2) 75

Changes to snack/demos/tcl/fourChan.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

# Create a four channel sound with some computed waveform data

sound s -channels 4 -rate 8000
s length 16000
set p 16
set n 0

Added snack/demos/tcl/freewrap.

cannot compute difference between binary files

Added snack/demos/tcl/generator.tcl.

























































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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.1

set f [snack::filter generator 440.0]
snack::sound s
#snack::audio playLatency 200

tk_optionMenu .m v(type) sine rectangle triangle sawtooth noise
foreach i [list 0 1 2 3 4] {
  .m.menu entryconfigure $i -command Config
}
pack .m -side bottom

pack [frame .fb] -side bottom
pack [button .fb.a -bitmap snackPlay -command Play] -side left
pack [button .fb.b -bitmap snackStop -command "s stop"] -side left

set v(freq) 440.0
set v(ampl) 20000

pack [frame .f] -expand yes -fill both -side top
pack [scale .f.s1 -label Frequency -from 4000 -to 50 -length 200\
        -variable v(freq) -command Config] -side left -expand yes -fill both
pack [scale .f.s2 -label Amplitude -from 32767 -to 0 -length 200\
        -variable v(ampl) -command Config] -side left -expand yes -fill both

proc Config {args} {
  global f v
  set shape 0.0
  set type $v(type)
  switch $type {
    sine {
      set shape 0.0
    }
    rectangle {
      set shape 0.5
    }
    triangle {
      set shape 0.5
    }
    sawtooth {
      set shape 0.0
      set type triangle
    }
  }
  $f configure $v(freq) $v(ampl) $shape $type -1
}

proc Play {} {
  global f
  s stop
  s play -filter $f
}

Added snack/demos/tcl/generator2.tcl.













































































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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.1

snack::sound s1 -channels 2
set leftMap [snack::filter map 1 0 0 0]
set left(generator) [snack::filter generator 440 20000 0.0 sine -1]
set leftFilter [snack::filter compose $left(generator) $leftMap]

snack::sound s2 -channels 2
set rightMap [snack::filter map 0 0 0 1]
set right(generator) [snack::filter generator 440 20000 0.0 sine -1]
set rightFilter [snack::filter compose $right(generator) $rightMap]

pack [frame .fb] -side bottom
pack [button .fb.a -bitmap snackPlay -command Play] -side left
pack [button .fb.b -bitmap snackStop -command "snack::audio stop"] -side left

set left(freq) 440.0
set left(ampl) 20000
set right(freq) 440.0
set right(ampl) 20000

pack [frame .left] -expand yes -fill both -side top
pack [label .left.l -text "Left channel "] -side left
pack [scale .left.s1 -label Frequency -from 4000 -to 50 -length 200\
        -variable left(freq) -command [list Config left]] -side left -expand yes -fill both
pack [scale .left.s2 -label Amplitude -from 32767 -to 0 -length 200\
        -variable left(ampl) -command [list Config left]] -side left -expand yes -fill both
tk_optionMenu .left.m1 left(type) sine rectangle triangle sawtooth noise
foreach i [list 0 1 2 3 4] {
 .left.m1.menu entryconfigure $i -command [list Config left]
}
pack .left.m1 -side left

pack [frame .right] -expand yes -fill both -side top
pack [label .right.l -text "Right channel"] -side left
pack [scale .right.s1 -label Frequency -from 4000 -to 50 -length 200\
        -variable right(freq) -command [list Config right]] -side left -expand yes -fill both
pack [scale .right.s2 -label Amplitude -from 32767 -to 0 -length 200\
        -variable right(ampl) -command [list Config right]] -side left -expand yes -fill both
tk_optionMenu .right.m2 right(type) sine rectangle triangle sawtooth noise
foreach i [list 0 1 2 3 4] {
 .right.m2.menu entryconfigure $i -command [list Config right]
}
pack .right.m2 -side left

proc Config {f args} {
  set shape 0.0
  upvar $f lf
  set type $lf(type)
  switch $type {
    sine {
      set shape 0.0
    }
    rectangle {
      set shape 0.5
    }
    triangle {
      set shape 0.5
    }
    sawtooth {
      set shape 0.0
      set type triangle
    }
  }
  $lf(generator) configure $lf(freq) $lf(ampl) $shape $type -1
}

proc Play {} {
  snack::audio stop
  s1 play -filter $::leftFilter
  s2 play -filter $::rightFilter
}

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

snack::sound s -channels 2

pack [frame .a]
pack [frame .b]
pack [snack::levelMeter .a.left  -width 20 -length 200 \
	-orient horizontal]

Changes to snack/demos/tcl/mapChan.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

snack::sound s

set v(0) 1
set v(1) 0
set v(2) 0
set v(3) 1

Changes to snack/demos/tcl/mixer.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

# A cross-platform mixer application that adapts to the capabilities
# of Snack on the machine it is run on.
# Lots of functionality on Linux - play volume only on Windows, currently.

package require -exact snack 2.0
package require -exact snack 2.1

proc Update {} {
  global doMonitor
  snack::mixer update
  if $doMonitor { after 100 Update }
  if $::doMonitor { after 100 Update }
}
bind . <Configure> Update
wm protocol . WM_DELETE_WINDOW exit

pack [frame .f] -expand yes -fill both
pack [checkbutton .r -text Monitor -command Update -variable doMonitor]

Added snack/demos/tcl/notescale.tcl.



























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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.1

set f [snack::filter generator 440.0 30000 0.0 sine 8000]
snack::sound s
#snack::audio playLatency 100

wm resizable . 0 0

proc Beep {freq} {
  $::f configure $freq
  s stop
  s play -filter $::f
}

pack [button .b1 -text C4 -command [list Beep 261.6]] -side left
pack [button .b2 -text D4 -command [list Beep 293.7]] -side left
pack [button .b3 -text E4 -command [list Beep 329.7]] -side left
pack [button .b4 -text F4 -command [list Beep 349.3]] -side left
pack [button .b5 -text G4 -command [list Beep 392.1]] -side left
pack [button .b6 -text A4 -command [list Beep 440.0]] -side left
pack [button .b7 -text B4 -command [list Beep 493.9]] -side left
pack [button .b8 -text C5 -command [list Beep 523.3]] -side left

Added snack/demos/tcl/oggstream.tcl.





































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#!/bin/sh
# the next line restarts using tclsh \
exec wish8.3 "$0" "$@"

# Demonstration that sends a live recorded Ogg/Vorbis stream
# to the Snack sound server, aserver.tcl
# You will have to edit this script to set host and port
# to reflect were the server is run.

package require snack
package require snackogg

# Edit host and port here

set host ior.speech.kth.se
set port 23654

if [catch {set sock [socket $host $port]} res] {
    puts "Error: no aserver.tcl at $host:$port"
    exit
}

# Create sound object and attach it to the opened socket stream
sound s -channel $sock -channels 2 -rate 44100 -fileformat ogg

# Notify the server that a play operation is due
puts -nonewline $sock play

# Set desired bitrate
s config -nominalbitrate 32000

# Start recording
s record

# Keep the event loop alive, necessary for background recording
vwait forever

Added snack/demos/tcl/phonetogram.tcl.
























































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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.1

sound s
sound t

pack [frame .b] -side bottom
pack [button .b.r -bitmap snackRecord -command Start -fg red -width 40] \
    -side left  
pack [button .b.s -bitmap snackStop -command Stop -width 40] -side left
pack [button .b.p -bitmap snackPlay -command {Stop;s play} -width 40] \
    -side left
pack [checkbutton .b.l -text "Erase dots" -variable erase] -side left
pack [frame .f] -side top -expand true -fill both
pack [canvas .f.c -bg white] -side left -expand true -fill both
.f.c create text 130 100 -text "Phonetogram plot (pitch and intensity)"

set samplePos 0
set erase 0

proc Stop {} {
  s stop
  after cancel Draw
}

proc Start {} {
  Stop
  s record
  set ::samplePos 0
  .f.c delete all
  after 200 Draw
}

proc Draw {} {
  if {$::erase} { .f.c delete all }
  set length [s length]  
  while {$::samplePos < $length - 666} {
    t copy s -start $::samplePos -end [expr {$::samplePos+665}]
    t changed new
    set pitch [lindex [t pitch] 2]
    set amplitude [t max]
    if {$amplitude < 1} { set amplitude 1 }
    set y [expr {[winfo height .f.c]*(2.0-log10($amplitude)/2.26)}]
    set x [expr {[winfo width .f.c]*($pitch/300.0)}]
    if {$pitch > 0.0} {
      .f.c create oval [expr {$x-1}] [expr {$y-1}] [expr {$x+1}] [expr {$y+1}]
    }
    incr ::samplePos 160
  }
  after 50 Draw
  if {[s length] > 320000} Stop
}

Added snack/demos/tcl/pitch.tcl.























































































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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.1

sound s
sound t

pack [frame .b] -side bottom
pack [button .b.r -bitmap snackRecord -command Start -fg red -width 40] \
    -side left  
pack [button .b.s -bitmap snackStop -command Stop -width 40] -side left
pack [button .b.p -bitmap snackPlay -command {Stop;s play} -width 40] \
    -side left
pack [label .b.l -text "Draw speed:"] -side left
tk_optionMenu .b.om pixpsec 25 50 100 200
pack .b.om -side left
pack [label .b.l2 -text "pixels per second"] -side left
pack [frame .f] -side top -expand true -fill both
pack [canvas .f.d -width 40 -bg white] -side left -fill y
pack [canvas .f.c -bg white] -side left -expand true -fill both
.f.c create text 150 100 -text "Pitch plot of microphone signal"

set pixpsec 25
set samplePos 0
#.c create spectrogram 0 0 -sound s -height 200 -pixelspersec $pixpsec

proc Stop {} {
  s stop
  after cancel Draw
}

proc Start {} {
  Stop
  s record
  set ::samplePos 0
  set ::ox  0
  set ::oy  0
  .f.c delete all
  .f.c create line 0 $::ty 1280 $::ty -tags target
  after 200 Draw
}

proc Draw {} {
  set length [s length]  
  while {$::samplePos < $length - 666-0*320} {
    t copy s -start $::samplePos -end [expr {$::samplePos+665+0*320}]
    set pitch [lindex [t pitch] 2]
    set x [expr {$::ox + 0.01 * $::pixpsec}]
    set y [expr {[winfo height .f.c]*((300-$pitch)/300.0)}]
    if {$::oy == 0} { set ::oy $y }
    if {$pitch > 0.0 && abs($::oy-$y) < 10} {
      .f.c create oval [expr {$x-1}] [expr {$y-1}] [expr {$x+1}] [expr {$y+1}]
    }
    incr ::samplePos 160
    set ::ox $x
    set ::oy $y
    if {$x > [winfo width .f.c]} Stop
  }
  after 50 Draw
  if {[s length] > 320000} Stop
}

bind .f.c <Configure> Configure

proc Configure {} {
  .f.d delete all
  snack::frequencyAxis .f.d 0 0 40 [winfo height .f.c] -topfr 300
}

set ty 150
.f.c create line 0 $::ty 1280 $::ty -tags target
bind .f.c <1> [list initDrag %x %y]
bind .f.c <B1-Motion> [list Drag %x %y]

proc initDrag {x y} {
  set ::ty [.f.c canvasy $y]
  .f.c coords target 0 $::ty 1280 $::ty
}

proc Drag {x y} {
  set y [.f.c canvasy $y]
  .f.c coords target 0 $::ty 1280 $::ty
  set ::ty $y
}

Changes to snack/demos/tcl/play.tcl.

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#!/bin/sh
# the next line restarts using tclsh \
exec tclsh8.3 "$0" "$@"

package require -exact sound 2.0
package require -exact sound 2.1
# Try to load optional file format handlers
catch { package require snacksphere }
catch { package require snackogg }

if {[llength $argv] == 0} {
  puts {Usage: play.tcl file}
  exit
} else {
  set file [lindex $argv 0]
}

snack::sound s -file $file
s play -block 1

Added snack/demos/tcl/polarspec.tcl.



































































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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.1

set rate 16000
snack::sound s -rate $rate

# Length of FFT 
set n 1024
set type FFT

# Start recording, create polygon, and schedule a draw in 100 ms

proc Start {} {
  Stop
  set ::pos 0
  .c delete all
  .c create polygon -1 -1 -1 -1 -tags polar -fill green
  s record
  after 100 Draw
}

# Stop recording and updating the plot

proc Stop {} {
  s stop
  after cancel Draw
}

# Calculate spectrum and plot it

proc Draw {} {
  if {[s length] > $::n} {
    set ::pos [expr [s length] - $::n]
    set spec [s dBPowerSpectrum -start $::pos -fftlen $::n -winlen $::n \
	-analysistype $::type]
    set coords {}
    set f 0.0001
    foreach val $spec {
      set v [expr {6.282985 * log($f)/log(2.0)}]
      set a [expr {[winfo height .c]/214.0*($val+100)}]
      set x [expr {[winfo width .c]/2+$a*cos($v)}]
      set y [expr {[winfo height .c]/2+$a*sin($v)}]
      lappend coords $x $y
      set f [expr {$f + 16000.0 / $::n}]
    }
    eval .c coords polar $coords
  }
  after 10 Draw
  if {[s length -unit sec] > 20} Stop
}

# Create simple GUI

pack [ frame .f] -side bottom
pack [ button .f.b1 -bitmap snackRecord -command Start -fg red -width 40] \
    -side left
pack [ button .f.b2 -bitmap snackStop   -command Stop -width 40] -side left
pack [ radiobutton .f.b3 -text FFT -variable type -value FFT] -side left
pack [ radiobutton .f.b4 -text LPC -variable type -value LPC] -side left
pack [ canvas .c -width 300 -height 300 -bg black] -side top -expand true \
    -fill both
.c create text 150 150 -text "Polar spectrum plot of microphone signal" \
    -fill red

Changes to snack/demos/tcl/record.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

file delete _tmprec.wav
snack::sound t -debug 0
t write _tmprec.wav
snack::sound s -file _tmprec.wav -debug 0

set m [menu .menu]

Changes to snack/demos/tcl/recrplay.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

snack::sound s

set last 0
set server localhost:23654

proc Start {} {
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    puts -nonewline $sock play

    # Send an AU file header to open the device correctly

    puts -nonewline $sock [s data -fileformat au]

    # Run this procedure again in 200ms
    # Run SendData procedure in 200ms

    after 200 SendData
}

proc Stop {} {
    s stop
}

Changes to snack/demos/tcl/snamp.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1
# Try to load optional file format handlers
catch { package require snacksphere }
catch { package require snackogg }

# If they are present add new filetypes to file dialogs
set extTypes  {}
set loadTypes {}
set loadKeys  {}
set saveTypes {}
set saveKeys  {}
if {[info exists snack::snacksphere]} {
    lappend extTypes {SPHERE .sph} {SPHERE .wav}
    lappend loadTypes {{SPHERE Files} {.sph}} {{SPHERE Files} {.wav}}
    lappend loadKeys SPHERE SPHERE
}
if {[info exists snack::snackogg]} {
  lappend extTypes  {OGG .ogg}
  lappend loadTypes {{Ogg Vorbis Files} {.ogg}}
  lappend loadKeys  OGG
  lappend saveTypes {{Ogg Vorbis Files} {.ogg}}
  lappend saveKeys  OGG
}
snack::addExtTypes $extTypes
snack::addLoadTypes $loadTypes $loadKeys
snack::addSaveTypes $saveTypes $saveKeys


snack::debug 0
snack::sound s -debug 0
snack::sound s2
snack::sound sa

set timestr ""
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 if [file isdirectory $argv] {
  catch {cd $argv}
 }
}

wm protocol . WM_DELETE_WINDOW exit

set filelist [glob -nocomplain *.mp3 *.wav *.MP3 *.WAV]
if {[info exists snack::snackogg]} {
  set filelist [concat $filelist [glob -nocomplain *.ogg *.OGG]]
}
foreach file [lsort -dictionary [glob -nocomplain *.mp3 *.wav *.MP3 *.WAV]] {
foreach file [lsort -dictionary $filelist] {
    set name [file tail $file]
    set files($name) $file
    .frame.list insert end $file
}

Changes to snack/demos/tcl/spectrum.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1

snack::sound s

array set map {
    0 2
    1 3
    2 4

Changes to snack/demos/tcl/tcl-demos.txt.

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fourChan.tcl
Demo of four channel sound output with channel selection.

echo.tcl
Demo of echo filter with interactive parameter modification.

compose.tcl
Demo of a composed filter, i.e. one map filter pipe-lined with an echo filter.
Demo of a composed filter, a map filter in series with an echo filter.

formant.tcl
Demo of a simple formant speech synthesizer built using Snack filters.

polarspec.tcl
Polar spectrum plot of microphone input signal.

oggstream.tcl
Demo that sends a live recorded Ogg/Vorbis stream to aserver.tcl

generator.tcl
Simple real-time tone generator.

notescale.tcl
Example of on-the-fly beep generation.

CSLwithAB.tcl
Example on how to read CSL/NSP files with A and B data chunks.

pitch.tcl
Draws pitch track of speech recorded from the microphone.

phonetogram.tcl
Draws simple phonetogram, i.e., a pitch/intensity plot.

generator2.tcl
Two channel real-time tone generator.

Changes to snack/demos/tcl/tomAmp.tcl.

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set tomAmp(Console) 0
set tomAmp(p) 0
set tomAmp(pause) 0
set tomAmp(elapsed) 0
set tomAmp(current) {}
set tomAmp(currentMP3) {}
;# Setup sound settings
package require -exact snack 2.0
package require -exact snack 2.1
# Buttons
option add *font {Helvetica 10 bold}
option add *Button.activeBackground yellow
option add *Button.borderwidth 1
option add *Button.relief raised
option add *Entry.background lightyellow
option add *Entry.foreground black

Changes to snack/demos/tcl/widget.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
package require -exact snack 2.1
package require http

option add *font {Helvetica 10 bold}
set home http://www.speech.kth.se/snack/
set version ""
set colors {#000 #006 #00B #00F #03F #07F #0BF #0FF #0FB #0F7 \
	    #0F0 #3F0 #7F0 #BF0 #FF0 #FB0 #F70 #F30 #F00}
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  set version "Looking up latest version at $home ..."
  catch {::http::geturl $home/$tcl_platform(platform).date -command CheckV}
}
snack::menuCommand File Mixer... snack::mixerDialog
snack::menuCommand File Quit exit

proc CheckV token {
  set ::version "Your version of Snack was released March 27, 2001. \
  set ::version "Your version of Snack was released March 7, 2002. \
      Latest version released [::http::data $token]."
}

# Title label

pack [frame .t] -pady 5
pack [label .t.l -text "Snack Sound Toolkit Demonstrations"\
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pack [button .f3.b1 -text "Simple" -command {Run MinSect.tcl}] -side left
pack [button .f3.b2 -text "See Code" -command {Browse MinSect.tcl}] -side left
pack [button .f3.b3 -text "Fancy" -command {Run Section.tcl}] -side left
pack [button .f3.b4 -text "See Code" -command {Browse Section.tcl}] -side left
pack [frame  .f4] -pady 2
pack [label  .f4.l -text "Filter examples:"] -side left
pack [button .f4.b1 -text "Channel Map" -command {Run mapChan.tcl}] -side left
pack [button .f4.b3 -text "Echo" -command {Run echo.tcl}] -side left
pack [button .f4.b4 -text "Composite" -command {Run compose.tcl}] -side left
pack [button .f4.b5 -text "Synthesis" -command {Run formant.tcl}] -side left
pack [button .f4.b2 -text "Echo" -command {Run echo.tcl}] -side left
pack [button .f4.b3 -text "Composite" -command {Run compose.tcl}] -side left
pack [button .f4.b4 -text "Generator" -command {Run generator.tcl}] -side left
pack [button .f4.b5 -text "Generator2" -command {Run generator2.tcl}] -side left
pack [button .f4.b6 -text "Notescale" -command {Run notescale.tcl}] -side left
pack [frame  .f5] -pady 2
pack [label  .f5.l -text "Sound tools:"] -side left
pack [button .f5.b1 -text "Simple" -command {Run cool.tcl}] -side left
pack [button .f5.b2 -text "dbrec" -command {Run dbrec.tcl}] -side left
pack [button .f5.b2 -text "record" -command {Run record.tcl}] -side left
pack [button .f5.b3 -text "xs" -command {Run xs.tcl demo}] -side left
pack [button .f5.b3 -text "record" -command {Run record.tcl}] -side left
pack [button .f5.b4 -text "xs" -command {Run xs.tcl demo}] -side left
pack [label  .f5.l2 -text "MP3 player:"] -side left
pack [button .f5.b4 -text "tomAmp" -command {Run tomAmp.tcl}] -side left
pack [button .f5.b5 -text "tomAmp" -command {Run tomAmp.tcl}] -side left
pack [label  .f5.l3 -text "Mixer:"] -side left
pack [button .f5.b5 -text "mixer" -command {Run mixer.tcl}] -side left
pack [label .v -textvar version]
pack [button .f5.b6 -text "mixer" -command {Run mixer.tcl}] -side left
pack [frame  .f6] -pady 2
pack [label  .f6.l -text "Speech toys:"] -side left
pack [button .f6.b1 -text "Synthesis" -command {Run formant.tcl}] -side left
pack [button .f6.b2 -text "Pitch" -command {Run pitch.tcl}] -side left
pack [button .f6.b3 -text "Phonetogram" -command {Run phonetogram.tcl}] -side left
pack [button .f6.b4 -text "Spectrum" -command {Run polarspec.tcl}] -side left
if {$::tcl_platform(platform) == "unix" || \
    $::tcl_platform(platform) == "windows"} {
  pack [label  .f6.l2 -text "Script compiler:"] -side left
  pack [button .f6.b5 -text "wrap" -command {Run wrap.tcl}] -side left
  pack [label .v -textvar version]
}

proc Run {script {demoFlag 0}} {
  set i [interp create]
  load {} Tk $i
  $i eval rename exit dontexit
  interp alias $i exit {} interp delete $i
  if {$demoFlag != 0} {

Changes to snack/demos/tcl/wrap.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

# This utility creates stand-alone executables from Snack Tcl scripts
# It needs the freewrap tool which can be downloaded from
# http://freewrap.sourceforge.net/
# Edit this file to set the freewrap variable below according to
# your install path.
# your freewrap install path.


pack [label .l1 -text "This utility creates\nstand-alone executables"]
update

# Get the Snack package's directory

package require -exact snack 2.0
package require -exact snack 2.1
set tmp [package ifneeded snack [package provide snack]]
set tmp [lindex [lindex [split $tmp ";"] 0] end]
set snackdir [file dirname $tmp]

switch -glob [string tolower $tcl_platform(platform)] {
 windows {
# Customize freewrap install dir here
# freewrap.exe is included in the Windows binary distribution
  set freewrap E:/freewrap44/freewrap.exe
  set freewrap [file join [pwd] freewrap.exe]
  set tmpdir C:/temp
  regsub -all {\\} $tmpdir / tmpdir
  set wrapdir [file join $tmpdir wrap]
  set appextension .exe
 }
 unix {
# Customize freewrap install dir here
# freewrap executable for Linux-i386 is included in the source distribution
  set freewrap ~/bin/freewrap
  set freewrap [file join [pwd] freewrap]
  set tmpdir /tmp
  set wrapdir [file join $tmpdir wrap]
  set appextension ""
 }
 default {
  error "unknown os $tcl_platform(os)"
 }
}

if {[info exists argv] == 0} { set argv "" }
set mainprog [file rootname [lindex $argv 0]]
if {$mainprog == ""} {
 set mainprog [file rootname [lindex [file split \
	 [tk_getOpenFile -filetypes {{{Tcl scripts} {.tcl}}}]] end]]
 if {$mainprog == ""} exit
  if {$mainprog == ""} return
}

if {[file executable $freewrap] == 0} {
    tk_messageBox -message "This utility requires the freewrap program which is available at http://freewrap.sourceforge.net/. Edit wrap.tcl in order to specify its install path."
 exit
}

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	[list $snackdir/libsnack[info sharedlibextension] \
	$snackdir/snack.tcl $snackdir/pkgIndex.tcl ]] {
 file mkdir $dir
 foreach file $list {
  file copy $file $dir
 }
}

# Copy standard extension packages if they are needed

set f0 [open ${mainprog}.tcl r]
while {[eof $f0] == 0} {
  set line [gets $f0]
  if {[string match {*package require*snackogg*} $line]} {
    file copy $snackdir/libsnackogg[info sharedlibextension] $dir
  }
  if {[string match {*package require*snacksphere*} $line]} {
    file copy $snackdir/libsnacksphere[info sharedlibextension] $dir
  }
}
close $f0

# copy script files to the wrap directory, and insert magic code

set files ${mainprog}.tcl
set files [concat $files [lrange $argv 1 end]]

foreach fn $files {
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# Do the actual wrapping

eval exec $freewrap ${mainprog}.tcl $wrapfiles
file copy -force $wrapdir/${mainprog}$appextension $appdir

catch {exec chmod -R 777 $wrapdir}
catch {tk_messageBox -message "Created: ${mainprog}$appextension"}
cd $appdir
exit

Changes to snack/demos/tcl/xs.tcl.

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#!/bin/sh
# the next line restarts using wish \
exec wish8.3 "$0" "$@"

package require -exact snack 2.0
catch {
    package require snacksphere
package require -exact snack 2.1
# Try to load optional file format handlers
catch { package require snacksphere }
catch { package require snackogg }
}
package require http

set debug 0
snack::debug $debug
snack::sound snd -debug $debug
snack::sound cbs -debug $debug

set tcl_precision 7
set f(prog) [info script]
set f(labfile) ""
set f(sndfile) ""
set f(lpath)   ""
set f(header)  ""
set mexhome "~/snack/"
catch {source $mexhome/ipa_tmh.tcl}
set f(ipapath) $mexhome/ipa_xbm
set local 0
if $local {
    set v(labfmt) TIMIT
    set v(smpfmt) WAV
    set v(ashost) datan.speech.kth.se
    set v(ashost) ior.speech.kth.se
} else {
    set v(labfmt) TIMIT
    set v(smpfmt) WAV
    set v(ashost) localhost
}
set labels {}
set undo {}
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set v(psfilet) {tmp$N.ps}
set v(psfile)  ""
set v(vchan)   -1
#set v(offset) 0
#set v(zerolabs) 0
set v(startsmp) 0
set v(lastmoved) -1
set v(p_version) 2.0
set v(s_version) 2.0
set v(p_version) 2.1
set v(s_version) 2.1
set v(plugins) {}
set v(scroll) 1
set v(rate) 16000
set v(sfmt) Lin16
set v(chan) 1
set v(topfr) 8000
set v(rp_sock) ""
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set v(contrast) 0
set v(brightness) 0
set v(showspeg) 0
set v(remspegh) 200
set v(remote) 0
set v(asport) 23654
set v(handle) ""
set v(s0) 0

set z(zoomwinh) 200
set z(zoomwinw) 600
set z(zoomwinx) 200
set z(zoomwiny) 200
set z(zoomwavh) 0
set z(zoomwavw) 0
set z(f) 1

set s(sectwinh) 400
set s(sectwinw) 400
set s(sectwinx) 200
set s(sectwiny) 200
set s(secth) 400
set s(sectw) 400
set s(rx) -1
set s(fftlen) 512
set s(anabw)  31.25
set s(ref)    -110.0
set s(range)  110.0
set s(wintype) Hamming

proc SetDefaultVars {} {
    global f v local
    global f v s local

    set v(waveh) 50
    set v(spegh) 0
    set v(scrw) 32767
    set v(pps) 400
    set v(opps) 400
    set v(fftlen) 256
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#	set v(browser) "netscape"
	if {$::tcl_platform(os) == "HP-UX"} {
	    option add *font {Helvetica 10 bold}
	} else {
	    option add *font {Helvetica 12 bold}
	}
    } else {
	set v(printcmd)  {C:/gstools/gs5.50/gswin32 "-IC:\gstools\gs5.50;C:\gstools\gs5.50\fonts" -sDEVICE=laserjet -dNOPAUSE $FILE -c quit}
	set v(gvcmd)     {C:/gstools/gsview/gsview32 $FILE}
	set v(printcmd)  {C:/gs/gs6.50/bin/gswin32 "-IC:\gs\gs6.50;C:\gs\gs6.50\fonts" -sDEVICE=laserjet -dNOPAUSE $FILE -c quit}
	set v(gvcmd)     {C:/ghostgum/gsview/gsview32 $FILE}
	set v(psfilecmd) {command.com /c copy _xspr$n.ps $v(psfile)}
	if $local {
#	    set v(pluginfiles) {H:/tcl/mexd/dataplot.plg H:/tcl/mexd/generator.plg H:/tcl/mexd/pitch.plg}
            set v(pluginfiles) {}
	} else {
	    set v(pluginfiles) [glob -nocomplain *.plg]
	}
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    set v(remspegh) 200
    set v(linkfile) 0
    set f(skip) 0
    set f(byteOrder) ""
    set f(ipath) ""
    set f(ihttp) "http://www.speech.kth.se/~kare/ex1.wav"
    #"http://www.speech.kth.se/cgi-bin/TransAll?this_is_an_example+am"

    set s(fftlen) 512
    set s(anabw)  31.25
    set s(ref)    -110.0
    set s(range)  110.0
    set s(wintype) Hamming
    set s(atype) FFT
    set s(lpcorder) 20

    if {[info exists snack::snackogg]} {
      set ::ogg(nombr) 128000
      set ::ogg(maxbr) -1
      set ::ogg(minbr) -1
      set ::ogg(com)   ""
      set ::ogg(query) 1
    }
}

SetDefaultVars
catch { source [file join ~ .xsrc] }
catch { source [file join ~ .xsrf] }

snd config -rate $v(rate)
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set amplify(v) 100.0
set amplify(db) 0

set normalize(f) [snack::filter map 1.0]
set normalize(v) 100.0
set normalize(db) 0
set normalize(allEqual) 1

set remdc(f) [snack::filter iir -numerator "0.99 -0.99" -denominator "1 -0.99"]

set f(spath) $f(ipath)
set f(http) $f(ihttp)
set f(urlToken) ""

if {$v(p_version) != $v(s_version)} {
     set v(msg) "Warning, you have saved settings from an older version of xs!"
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snack::menuCommand Transform Normalize... Normalize
#snack::menuCommand Transform Normalize... Normalize
snack::menuCommand Transform Echo... Echo
snack::menuCommand Transform {Mix Channels...} MixChan
snack::menuCommand Transform Invert Invert
snack::menuCommand Transform Reverse Reverse
snack::menuCommand Transform Silence Silence
snack::menuCommand Transform {Remove DC} RemoveDC

snack::menuPane Tools

snack::menuPane Options 0 ConfigOptionsMenu
snack::menuCommand Options Settings... Settings
if {[info exists snack::snackogg]} {
  snack::menuCommand Options "Ogg Vorbis..." [list OggSettings Close]
}
snack::menuCommand Options Plug-ins... Plugins
snack::menuCascade Options {Label File Format}
snack::menuRadio {Label File Format} TIMIT v(labfmt) TIMIT {Redraw quick}
snack::menuRadio {Label File Format} HTK v(labfmt) HTK {Redraw quick}
snack::menuRadio {Label File Format} WAVES v(labfmt) WAVES {Redraw quick}
snack::menuRadio {Label File Format} MIX v(labfmt) MIX {Redraw quick}
if $local {
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    if [catch {open [file join ~ .xsrf] w} out] {
    } else {
	puts $out "set recentFiles \[list $recentFiles\]"
	close $out
    }
}

set extTypes  [list {TIMIT .phn} {MIX .smp.mix} {HTK .lab} {WAVES .lab}]
set loadTypes [list {{MIX Files} {.mix}} {{HTK Label Files} {.lab}} {{TIMIT Label Files} {.phn}} {{TIMIT Label Files} {.wrd}} {{Waves Label Files} {.lab}}]
set loadKeys [list MIX HTK TIMIT WAVES]
set saveTypes {}
set saveKeys  {}

if [info exists snack::snacksphere] {
    snack::addExtTypes {{SPHERE .sph} {SPHERE .wav} {TIMIT .phn} {MIX .smp.mix} {HTK .lab} {WAVES .lab}}
    snack::addLoadTypes {{{SPHERE Files} {.sph}} {{SPHERE Files} {.wav}} {{MIX Files} {.mix}} {{HTK Label Files} {.lab}} {{TIMIT Label Files} {.phn}} {{TIMIT Label Files} {.wrd}} {{Waves Label Files} {.lab}}} {SPHERE SPHERE MIX HTK TIMIT WAVES}
} else {
    snack::addExtTypes {{TIMIT .phn} {MIX .smp.mix} {HTK .lab} {WAVES .lab}}
    snack::addLoadTypes {{{MIX Files} {.mix}} {{HTK Label Files} {.lab}} {{TIMIT Label Files} {.phn}} {{TIMIT Label Files} {.wrd}} {{Waves Label Files} {.lab}}} {MIX HTK TIMIT WAVES}
}
if {[info exists snack::snacksphere]} {
    lappend extTypes {SPHERE .sph} {SPHERE .wav}
    lappend loadTypes {{SPHERE Files} {.sph}} {{SPHERE Files} {.wav}}
    lappend loadKeys SPHERE SPHERE
}
if {[info exists snack::snackogg]} {
  lappend extTypes  {OGG .ogg}
  lappend loadTypes {{Ogg Vorbis Files} {.ogg}}
  lappend loadKeys  OGG
  lappend saveTypes {{Ogg Vorbis Files} {.ogg}}
  lappend saveKeys  OGG
  
  proc OggSettings {text} {
    set w .ogg
    catch {destroy $w}
    toplevel $w
    wm title $w "Ogg Vorbis Settings"

    pack [frame $w.f1] -anchor w
    pack [label $w.f1.l -text "Nominal bitrate:" -widt 16 -anchor w] -side left
    pack [entry $w.f1.e -textvar ::ogg(nombr) -wi 7] -side left

    pack [frame $w.f2] -anchor w
    pack [label $w.f2.l -text "Max bitrate:" -width 16 -anchor w] -side left
    pack [entry $w.f2.e -textvar ::ogg(maxbr) -wi 7] -side left

    pack [frame $w.f3] -anchor w
    pack [label $w.f3.l -text "Min bitrate:" -width 16 -anchor w] -side left
    pack [entry $w.f3.e -textvar ::ogg(minbr) -wi 7] -side left
    
    pack [frame $w.f4] -anchor w
    pack [label $w.f4.l -text "Comment:" -width 16 -anchor w] -side left
    pack [entry $w.f4.e -textvar ::ogg(com) -wi 40] -side left

    pack [frame $w.f5] -anchor w
    pack [checkbutton $w.f5.b -text "Query settings before saving" \
	-variable ::ogg(query) -anchor w] -side left

    pack [frame $w.fb] -side bottom -fill x
    pack [button $w.fb.cb -text $text -command "destroy $w"] -side top
  }
}

snack::addExtTypes $extTypes
snack::addLoadTypes $loadTypes $loadKeys

proc GetOpenFileName {} {
    global f v

    if {$v(smpchanged) || $v(labchanged)} {
	if {[tk_messageBox -message "You have unsaved changes.\n Do you \
		really want to close?" -type yesno \
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proc GetSaveFileName {title} {
    global f v labels

    if {$labels != {} && [string compare $title "Save sample file"] != 0} {  
	switch $v(labfmt) {
	    MIX {
		snack::addSaveTypes {{{MIX Files} {.mix}}} {MIX}
	      lappend ::saveTypes {{MIX Files} {.mix}}
	      lappend ::saveKeys  MIX
	    }
	    HTK {
		snack::addSaveTypes {{{HTK Label Files} {.lab}}} {HTK}
	      lappend ::saveTypes {{HTK Label Files} {.lab}}
	      lappend ::saveKeys  HTK
	    }
	    TIMIT {
		snack::addSaveTypes {{{TIMIT Label Files} {.phn}} {{TIMIT Label Files} {.wrd}}} {TIMIT}
	      lappend ::saveTypes {{TIMIT Label Files} {.phn}} {{TIMIT Label Files} {.wrd}}
	      lappend ::saveKeys  TIMIT
	    }
	    WAVES {
		snack::addSaveTypes {{{Waves Label Files} {.lab}}} {WAVES}
	      lappend ::saveTypes {{Waves Label Files} {.lab}}
	      lappend ::saveKeys  WAVES
	    }
	    default
	}
	snack::addSaveTypes $::saveTypes $::saveKeys

	set gotfn [snack::getSaveFile -initialdir $f(lpath) -initialfile $f(labfile) -format $v(labfmt) -title $title]
 } else {
	snack::addSaveTypes $::saveTypes $::saveKeys

	set gotfn [snack::getSaveFile -initialdir $f(spath) -initialfile $f(sndfile) -format $v(smpfmt) -title $title]
    }
#    set tmp [string trimright $f(lpath) /].
#    if {[regexp $tmp $gotfn] == 1 && $tmp != "."} {
#	return ""
#    }
    update
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	if {$fn != ""} {
	    SaveFile $fn
	}
    }
}

proc SaveFile {{fn ""}} {
    global f v labels
  global f v labels

    SetCursor watch
    set strip_fn [lindex [file split [file rootname $fn]] end]
    set ext  [file extension $fn]
    if [string match macintosh $::tcl_platform(platform)] {
	set path [file dirname $fn]:
  SetCursor watch
  set strip_fn [lindex [file split [file rootname $fn]] end]
  set ext  [file extension $fn]
  if [string match macintosh $::tcl_platform(platform)] {
    set path [file dirname $fn]:
  } else {
    set path [file dirname $fn]/
  }
  if {$path == "./"} { set path ""}
  if {![IsLabelFile $fn]} {
    if {[info exists snack::snackogg]} {
      if {$::ogg(query) && [string match -nocase .ogg $ext]} {
	OggSettings Continue
	tkwait window .ogg
      }
      if [catch {snd write $fn -progress snack::progressCallback \
	  -nominalbitrate $::ogg(nombr) -maxbitrate $::ogg(maxbr) \
	  -minbitrate $::ogg(minbr) -comment $::ogg(com)} msg] {
	SetMsg "Save cancelled: $msg"
      }
    } else {
	set path [file dirname $fn]/
    }
    if {$path == "./"} { set path ""}
    if ![IsLabelFile $fn] {
	if [catch {snd write $fn -progress snack::progressCallback} msg] {
	    SetMsg "Save cancelled: $msg"
	}
	if {$v(linkfile)} {
	    snd configure -file $fn
	}
	set v(smpchanged) 0
	wm title . "xs: $fn"
	set f(spath) $path
	set f(sndfile) $strip_fn$ext
    } elseif {$labels != {}} {
	SaveLabelFile $labels $fn
	set v(labchanged) 0
	wm title . "xs: $f(spath)$f(sndfile) - $fn"
	set f(lpath) $path
	set f(labfile) $strip_fn$ext
    }
    SetCursor ""
      if [catch {snd write $fn -progress snack::progressCallback} msg] {
	SetMsg "Save cancelled: $msg"
      }
    }
    if {$v(linkfile)} {
	snd configure -file $fn
    }
    set v(smpchanged) 0
    wm title . "xs: $fn"
    set f(spath) $path
    set f(sndfile) $strip_fn$ext
  } elseif {$labels != {}} {
    SaveLabelFile $labels $fn
    set v(labchanged) 0
    wm title . "xs: $f(spath)$f(sndfile) - $fn"
    set f(lpath) $path
    set f(labfile) $strip_fn$ext
  }
  SetCursor ""
}

proc IsLabelFile {fn} {
    set ext [file extension $fn]
    if {$ext == ".lab"} { return 1 }
    if {$ext == ".mix"} { return 1 }
    if {$ext == ".phn"} { return 1 }
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    if {($v(autoload) == 1) || ($type == "smp")} {
	$c delete wave speg
	.of.c delete overwave
	catch {.sect.c delete sect}
	StopPlay

	set f(byteOrder) [snd cget -byteorder]
	set tmps [snack::sound]
	set tmps [snack::sound -debug $::debug]
	set ffmt [$tmps read $f(spath)$f(sndfile) -end 1 -guessproperties 1]
	if {$ffmt == "RAW"} {
	    set v(rate)      [$tmps cget -rate]
	    set v(sfmt)      [$tmps cget -encoding]
	    set v(chan)      [$tmps cget -channels]
	    set f(byteOrder) [$tmps cget -byteorder]
	    if {[InterpretRawDialog] == "cancel"} {
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    pack [label $w.q.f4.l -text "Byte Order"]
    pack [radiobutton $w.q.f4.ri -text "Little Endian\n(Intel)" \
	    -value littleEndian -var ::f(byteOrder)] -anchor w
    pack [radiobutton $w.q.f4.rm -text "Big Endian\n(Motorola)" \
	    -value bigEndian -var ::f(byteOrder)] -anchor w
    pack [label $w.q.f4.l2 -text "\nRead Offset (bytes)"]
    pack [entry $w.q.f4.e -textvar f(skip) -wi 6]
    snack::makeDialogBox $w -title "Interpret Raw File As" -type okcancel
    snack::makeDialogBox $w -title "Interpret Raw File As" -type okcancel \
	-default ok
}

proc Link2File {} {
    global f v

    StopPlay
    if {$v(smpchanged)} {
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	snack::menuEntryOff Transform Amplify...
	snack::menuEntryOff Transform Normalize...
	snack::menuEntryOff Transform Echo...
	snack::menuEntryOff Transform {Mix Channels...}
	snack::menuEntryOff Transform Invert
	snack::menuEntryOff Transform Reverse
	snack::menuEntryOff Transform Silence
	snack::menuEntryOff Transform {Remove DC}
    } else {
	snack::menuEntryOn Transform Conversions
	snack::menuEntryOn Transform Amplify...
	snack::menuEntryOn Transform Normalize...
	snack::menuEntryOn Transform Echo...
	snack::menuEntryOn Transform {Mix Channels...}
	snack::menuEntryOn Transform Invert
	snack::menuEntryOn Transform Reverse
	snack::menuEntryOn Transform Silence
	snack::menuEntryOn Transform {Remove DC}
    }
    if {[snd cget -channels] == 1} {
	snack::menuEntryOff Transform {Mix Channels...}
    }
}

proc ConfigOptionsMenu {} {
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	return
    }

    set v(undoc) "snd reverse -start $start -end $end"
    set v(redoc) "snd reverse -start $start -end $end"
    set v(smpchanged) 1
    .tb.undo config -state normal
    Redraw
}

proc Invert {} {
    global v filt

    if {[Marker2Sample m1] == [Marker2Sample m2]} MarkAll
    set start [Marker2Sample m1]
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	return
    }

    set v(undoc) "snd swap cbs"
    set v(redoc) "snd swap cbs"
    set v(smpchanged) 1
    .tb.undo config -state normal
    Redraw
}

proc Silence {} {
    global v filt

    set start [Marker2Sample m1]
    set end   [Marker2Sample m2]
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	return
    }

    set v(undoc) "snd swap cbs"
    set v(redoc) "snd swap cbs"
    set v(smpchanged) 1
    .tb.undo config -state normal
    Redraw
}

proc RemoveDC {} {
    global v remdc

    if {[Marker2Sample m1] == [Marker2Sample m2]} MarkAll
    set start [Marker2Sample m1]
    set end   [Marker2Sample m2]
    if {$start == $end} return
    SetMsg "Removing DC for range: $start $end"

    cbs copy snd
    if [catch {snd filter $remdc(f) -start $start -end $end \
	    -progress snack::progressCallback -continuedrain 0}] {
	SetMsg "Remove DC cancelled"
	snd copy cbs
	return
    }

    set v(undoc) "snd swap cbs"
    set v(redoc) "snd swap cbs"
    set v(smpchanged) 1
    .tb.undo config -state normal
    Redraw
}

proc ConfAmplify {flag} {
    global amplify

    set w .amp
    if {$amplify(db) == 1} {
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	return
    }

    set v(undoc) "snd swap cbs"
    set v(redoc) "snd swap cbs"
    set v(smpchanged) 1
    .tb.undo config -state normal
    Redraw
}

proc Amplify {} {
    global amplify

    if {[Marker2Sample m1] == [Marker2Sample m2]} MarkAll
    set w .amp
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proc DoNormalize {} {
    global v normalize

    set start [Marker2Sample m1]
    set end   [Marker2Sample m2]
    if {$start == $end} return
    SetMsg "Normalizing range: $start $end"

  
    if {$normalize(db) == 1} {
	set tmp [expr {pow(10,$normalize(v)/20.0)}]
    } else {
	set tmp [expr {$normalize(v) / 100.0}]
    }
    if {[string match [snd cget -encoding] Lin8]} {
	set smax 255.0
    } elseif {[string match [snd cget -encoding] Lin24]} {
        set smax 8388608.0
    } else {
	set smax 32767.0
    }
    for {set c 0} {$c < [snd cget -channels]} {incr c} {
	if {$normalize(allEqual)} {
         set max [snd max -start $start -end $end]
         set min [snd min -start $start -end $end]
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+







	return
    }

    set v(undoc) "snd swap cbs"
    set v(redoc) "snd swap cbs"
    set v(smpchanged) 1
    .tb.undo config -state normal
    Redraw
}

proc Normalize {} {
    global normalize

    if {[Marker2Sample m1] == [Marker2Sample m2]} MarkAll
    set w .norm
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+







	return
    }

    set v(undoc) "snd swap cbs"
    set v(redoc) "snd swap cbs"
    set v(smpchanged) 1
    .tb.undo config -state normal
    Redraw
}

proc PlayEcho {} {
    global echo

    set start [Marker2Sample m1]
    set end   [Marker2Sample m2]
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+







	return
    }

    set v(undoc) "snd swap cbs"
    set v(redoc) "snd swap cbs"
    set v(smpchanged) 1
    .tb.undo config -state normal
    Redraw
}

proc PlayMix {} {
    global mix

    set start [Marker2Sample m1]
    set end   [Marker2Sample m2]
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+







    global c v

    set f [Time2Coord [expr double($a / $v(width))]]
    eval $c xview moveto $f
}

proc Redraw {args} {
    global c labels f v debug
    global c labels f v

    SetCursor watch
    set length [snd length]
    if {$args != "quick"} {
	$c delete obj
	$c config -bg $v(bg)
	.cf.fyc.yc config -bg $v(bg)
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-
+







-
+














+
+
+








-
+







	.cf.fyc.yc delete axis
	if {$v(waveh) > 0} {
	    if {$v(linkfile) && $f(sndfile) != ""} {
		snack::deleteInvalidShapeFile [file tail $f(spath)$f(sndfile)]
		$c create waveform 0 0 -sound snd -height $v(waveh) \
			-pixels $v(pps) -tags [list obj wave] \
			-start $v(startsmp) -end $v(endsmp) \
			-channel $v(vchan) -debug $debug -fill $v(fg) \
			-channel $v(vchan) -debug $::debug -fill $v(fg) \
	-shapefile [file rootname [file tail $f(spath)$f(sndfile)]].shape\
			-progress snack::progressCallback
		snack::makeShapeFileDeleteable [file tail $f(spath)$f(sndfile)]
	    } else {
		$c create waveform 0 0 -sound snd -height $v(waveh) \
			-pixels $v(pps) -tags [list obj wave] \
			-start $v(startsmp) -end $v(endsmp) \
			-channel $v(vchan) -debug $debug -fill $v(fg)
			-channel $v(vchan) -debug $::debug -fill $v(fg)
	    }
	    $c lower wave
	    .cf.fyc.yc create text $v(yaxisw) 2 -text [snd max]\
		    -font $v(sfont) -anchor ne -tags axis -fill $v(fg)
	    .cf.fyc.yc create text $v(yaxisw) $v(waveh) -text [snd min]\
		    -font $v(sfont) -anchor se -tags axis -fill $v(fg)
	    .cf.fyc.yc create line 0 [expr $v(waveh)+0] $v(yaxisw) \
		    [expr $v(waveh)+0] -tags axis -fill $v(fg)  
	}
	if {$v(topfr) > [expr $v(rate)/2]} {
	    set v(topfr) [expr $v(rate)/2]
	}
	if {$v(spegh) > 0} {
	    set v(winlen) [expr int($v(rate) / $v(anabw))]
	    if {$v(winlen) > $v(fftlen)} {
	      set v(winlen) $v(fftlen)
	    }
	    $c create spectrogram 0 $v(waveh) -sound snd -fftlen $v(fftlen) \
		    -winlen $v(winlen) -height $v(spegh) -pixels $v(pps) \
		    -preemph $v(preemph) -topfr $v(topfr) -tags [list obj speg] \
		    -start $v(startsmp) -end $v(endsmp)\
		    -contrast $v(contrast) -brightness $v(brightness)\
		    -gridtspacing $v(gridtspacing) \
		    -gridfspacing $v(gridfspacing) -channel $v(vchan) \
		    -colormap $v($v(cmap)) -gridcol $v(gridcolor) \
		    -progress snack::progressCallback -debug $debug
		    -progress snack::progressCallback -debug $::debug
	    $c lower speg
	    snack::frequencyAxis .cf.fyc.yc 0 $v(waveh) $v(yaxisw) $v(spegh)\
		    -topfrequency $v(topfr) -tags axis -fill $v(fg)\
		    -font $v(sfont)
	    .cf.fyc.yc create line 0 [expr $v(spegh) + $v(waveh)+0] \
		    $v(yaxisw) [expr $v(spegh) + $v(waveh)+0] -tags axis\
		    -fill $v(fg)
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-
-
-
-
-
-
+
+
+
+
+
+
+

+
+
+
-
-
-
+
+
+


















-
+







    set v(startsmp) [expr int ([lindex [.of.xscroll get] 0] * [snd length])]
    set v(endsmp)   [expr int ([lindex [.of.xscroll get] 1] * [snd length])]
    $c xview moveto 0
    Redraw
}

proc DrawOverAxis {} {
    global v

    set totw [winfo width .]
    set scrh [winfo height .of.xscroll]
    set width [expr $totw - 2 * $scrh]
    set length [snd length -unit seconds]
  global v
  
  set totw [winfo width .]
  set scrh [winfo height .of.xscroll]
  set width [expr $totw - 2 * $scrh]
  set length [snd length -unit seconds]
  if {$length > 0} {
    set v(opps) [expr $width/$length]
  } else {
    set v(opps) 400
  }
    .of.c delete overaxis
    snack::timeAxis .of.c $scrh 20 $width 11 $v(opps) -tags overaxis \
	    -fill $v(fg)
  .of.c delete overaxis
  snack::timeAxis .of.c $scrh 20 $width 11 $v(opps) -tags overaxis \
      -fill $v(fg)
}

proc OverPlay {x} {
    global v
    
    set start [expr int($v(rate)*(($x - [winfo height .of.xscroll]) * 1000 / $v(opps)))]
    set end   [snd length]
    Stop snd
    if {$start < 0} { set start 0 }
    set v(s0) $start
    set v(s1) $end
    Play snd $start $end
    .of.c create poly -1 -1 -1 -1 -1 -1 -fill red -tags playmark
    after cancel PutPlayMarker
    after 50 PutPlayMarker
}

proc Reconf {} {
    global c v f debug
    global c v f

    set dox 0
    set doy 0
    if {[$c xview] == "0 1"} { set dox 1 }
    if {[$c yview] == "0 1"} { set doy 1 }

    if {$dox} {
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-
+



-
+







    set ww [.of.c itemcget overwave -width]
    set v(scrh) [winfo height .of.xscroll]
    set totw [expr [winfo width .] - 2 * $v(scrh)]
    if {$ww != $totw && ![catch {pack info .of}]} {
	.of.c delete overwave
        if {$v(linkfile) && $f(sndfile) != ""} {
	    .of.c create waveform $v(scrh) 0 -sound snd -height 20 \
		    -width $totw -tags overwave -fill $v(fg) -debug $debug \
		    -width $totw -tags overwave -fill $v(fg) -debug $::debug \
	    -shapefile [file rootname [file tail $f(spath)$f(sndfile)]].shape
	} else {
	    .of.c create waveform $v(scrh) 0 -sound snd -height 20 \
		    -width $totw -tags overwave -fill $v(fg) -debug $debug
		    -width $totw -tags overwave -fill $v(fg) -debug $::debug
	}
	.of.c create rectangle -1 -1 -1 -1 -tags mark -fill yellow -stipple gray25
    }
    if {[snd length] > 0} DrawOverAxis
#    if {$::tcl_platform(platform) == "unix"} {
#	if {$v(propflag) > 1} { pack propagate . 0 }
#    }
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-
+











-
+





-
+







    } else {
	.tb.rec config -state disabled
    }

}

proc Record {} {
    global c v rec debug
    global c v rec

    StopPlay
    set v(smpchanged) 1
    if [winfo exist .of] { pack forget .of }
    $c delete obj
    .of.c delete overwave
    set width [winfo width $c]
    $c xview moveto 0
    if {$v(waveh) > 0} {
	$c create waveform 0 0 -sound snd -height $v(waveh) -pixels $v(pps) \
		-width $width -tags [list obj recwave] -channel $v(vchan) \
		-debug $debug -fill red
		-debug $::debug -fill red
    }
    if {$v(spegh) > 0} {
	$c create spectrogram 0 $v(waveh) -sound snd -height $v(spegh) \
		-pixels $v(pps) \
		-width $width -tags [list obj recwave] -channel $v(vchan) \
		-colormap $v($v(cmap)) -debug $debug
		-colormap $v($v(cmap)) -debug $::debug
    }
    if {$v(linkfile)} {
	catch {file delete -force _xs[pid].wav}
	snd configure -file _xs[pid].wav
    }
    snd record
    set v(activerec) 1
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-
-
-
+



-
-
+
-







}

proc Undo {} {
    global c v labels undo

    if {[cbs length] != 0} {
	eval $v(undoc)
	set tmp $v(undoc)
	set v(undoc) $v(redoc)
	set v(redoc) $tmp
        foreach {v(undoc) v(redoc)} [list $v(redoc) $v(undoc)] break
	DrawOverAxis
	Redraw
    } else {
	set tmp $labels
	set labels $undo
        foreach {labels undo} [list $undo $labels] break
	set undo $tmp
	Redraw quick
    }
    SetMsg ""
}

proc SetUndo {l} {
    global undo
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+
+
-
+







	if {$xc > $v(width)} { set xc $v(width) }

	set t [Coord2Time $xc]
    } else {
	set xc [Time2Coord $x]
	set t $x
    }
    if {$t >= [snd length]} {
      set t [expr {[snd length]-1}]

    }
    $c itemconf $m -tags [list mark $t $m]
    $c coords $m $xc 0 $xc $v(toth)

    if {$m == "m1"} {
	set tm2 [Marker2Time m2]
	if {$t > $tm2} {
	    $c itemconf m2 -tags [list mark $tm2 m3]
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+










-
-
+
+

-
+

-
+

-
-
-
-
+
+
+
+



+
+
+
+
+
+
+
+
+
+
+
+
+
+








proc OpenSectWindow {} {
    global s v

    catch {destroy .sect}
    toplevel .sect -width $s(sectwinw) -height $s(sectwinh)
    wm title .sect "Spectrum section plot"
    wm geometry .sect +$s(sectwinx)+$s(sectwiny)
    pack propagate .sect 0

    set s(ostart) ""

    pack [frame .sect.f] -side bottom -fill x
    label .sect.f.lab -width 1 -relief sunken -bd 1 -anchor w
    pack .sect.f.lab -side left -expand yes -fill x
    pack [button .sect.f.exitB -text Close -command {destroy .sect}] -side left
    pack [canvas .sect.c -closeenough 5 -cursor draft_small -bg $v(bg)] -fill both -expand true

    pack [frame .sect.f2]
    pack [label .sect.f2.l1 -text "FFT points:" -anchor w] -side left
    pack [frame .sect.f1]
    label .sect.f1.l1 -text "FFT points:" -anchor w
#    pack [entry .sect.f2.e1 -textvar s(fftlen) -wi 6] -side left
    tk_optionMenu .sect.f2.cm1 s(fftlen) 64 128 256 512 1024 2048 4096 8192 16384
    tk_optionMenu .sect.f1.m1 s(fftlen) 64 128 256 512 1024 2048 4096 8192 16384
    for {set n 0} {$n < 7} {incr n} {
	.sect.f2.cm1.menu entryconfigure $n -command DrawSect
      .sect.f1.m1.menu entryconfigure $n -command DrawSect
    }

    tk_optionMenu .sect.f2.cm2 s(wintype) \
	 Hamming Hanning Bartlett Blackman Rectangle
    pack .sect.f2.cm1 .sect.f2.cm2 -side left
    label .sect.f1.l2 -text "Window:"
    tk_optionMenu .sect.f1.m2 s(wintype) \
	Hamming Hanning Bartlett Blackman Rectangle
    pack .sect.f1.l1 .sect.f1.m1 .sect.f1.l2 .sect.f1.m2 -side left
#    pack [label .sect.f2.l2 -text "Preemphasis:" -anchor w] -side left
#    pack [entry .sect.f2.e2 -textvar s(ref) -wi 6] -side left

    pack [frame .sect.f2]
    label .sect.f2.l1 -text "Analysis:"
    tk_optionMenu .sect.f2.m1 s(atype) FFT LPC
    .sect.f2.m1.menu entryconfigure 0 -command [list LPCcontrols disabled]
    .sect.f2.m1.menu entryconfigure 1 -command [list LPCcontrols normal]
    label .sect.f2.l2 -text "Order:"
    entry .sect.f2.e -textvariable s(lpcorder) -width 3
    scale .sect.f2.s -variable s(lpcorder) -from 1 -to 40 -orient horiz \
	-length 80 -show no
    bind .sect.f2.s <Button1-Motion> DrawSect
    pack .sect.f2.l1 .sect.f2.m1 .sect.f2.l2 .sect.f2.e .sect.f2.s -side left
    if {$s(atype) != "LPC"} { LPCcontrols disabled }
    if {$s(lpcorder) < 1} { set s(lpcorder) 20 }

    pack [frame .sect.f3]
    pack [label .sect.f3.l2 -text "Reference:" -anchor w] -side left
    pack [entry .sect.f3.e2 -textvar s(ref) -wi 6] -side left
    pack [label .sect.f3.u1 -text "dB" -anchor w] -side left
    pack [label .sect.f3.l3 -text "Range:" -anchor w] -side left
    pack [entry .sect.f3.e3 -textvar s(range) -wi 5] -side left
    pack [label .sect.f3.u2 -text "dBfs" -anchor w] -side left
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3907








+
+
+
+
+

-
+





+
+


















-
+
+


-






-
-
+
+







    bind .sect <Configure> DrawSect
    bind .sect <Any-Key> DrawSect
    bind .sect.c <ButtonPress-1>  { set s(rx) %x; set s(ry) %y ;.sect.c coords relmark 0 0 0 0;.sect.c coords df -10 -10;.sect.c coords db -10 -10}
    bind .sect.c <ButtonRelease-1>  { set s(rx) -1 }
    bind .sect.c <Motion>  {DrawSectMarks %x %y}
    bind .sect.c <Leave>  {.sect.c coords sx -1 -1 -1 -1;.sect.c coords sy -1 -1 -1 -1}
}

proc LPCcontrols {state} {
  .sect.f2.e configure -state $state
  .sect.f2.s configure -state $state
}

proc DrawSect {} {
    global c s v debug
    global c s v

    if [winfo exists .sect] {
	set geom [lindex [split [wm geometry .sect] +] 0]
	set s(sectwinw) [lindex [split $geom x] 0]
	set s(sectwinh) [lindex [split $geom x] 1]
        set s(sectwinx) [lindex [split [wm geometry .sect] +] 1]
        set s(sectwiny) [lindex [split [wm geometry .sect] +] 2]
	set s(sectw) [expr [winfo width .sect.c] - 25]
	set s(secth) [expr [winfo height .sect.c] - 20]
	set s(sectcw) [winfo width .sect.c]
	set s(sectch) [winfo height .sect.c]

	set s(start) [Marker2Sample m1]
	set s(end)   [Marker2Sample m2]
	if {$s(start) == $s(end)} { set s(start) [expr $s(end) - 1]}
	.sect.c delete sect
        set s(top) [expr int(($s(ref) + $s(range)) / 10.0)]
        set s(bot) [expr int($s(ref) / 10.0 )]

catch {
	if {$s(ostart) != ""} {
	    .sect.c create section 25 0 -sound snd -height $s(secth)\
		    -width $s(sectw) -maxvalue [expr 10.0*$s(top)] \
		    -minvalue [expr 10.0*$s(bot)] \
		    -start $s(ostart) -end $s(oend) -tags sect \
		    -fftlen $s(fftlen) \
		    -fftlen $s(fftlen) -analysistype $s(atype) \
		    -lpcorder $s(lpcorder) \
		    -winlen $s(fftlen) -channel $v(vchan) -fill red \
		    -topfr $v(topfr) -windowtype $s(wintype)

	}
	.sect.c create section 25 0 -sound snd -height $s(secth) \
		-width $s(sectw) -maxvalue [expr 10.0*$s(top)] \
		-minval [expr 10.0*$s(bot)] \
		-start $s(start) -end $s(end) -tags sect -fftlen $s(fftlen) \
		-winlen $s(fftlen) -channel $v(vchan) -frame 1 \
		-debug $debug -fill $v(fg) \
		-topfr $v(topfr) -windowtype $s(wintype)
		-debug $::debug -fill $v(fg) -analysistype $s(atype) \
		-lpcorder $s(lpcorder) -topfr $v(topfr) -windowtype $s(wintype)
    }
	.sect.c create text -10 -10 -text df: -font $v(sfont) -tags df \
		-fill blue
	.sect.c create text -10 -10 -text "0 db" -font $v(sfont) -tags db \
		-fill red
	set pps [expr int(double($s(sectw))/($v(topfr)/1000.0) + .5)]
	snack::timeAxis .sect.c 25 $s(secth) $s(sectw) 20 $pps \
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    set s(start) [Marker2Sample m1]
    set s(end)   [Marker2Sample m2]

    if {$s(start) == $s(end)} { set s(start) [expr $s(end) - 1]}

    set ps [snd dBPowerSpectrum -start $s(start) -end $s(end) \
	    -fftlen $s(fftlen) -windowlen $s(fftlen) -channel $v(vchan) \
	    -windowtype $s(wintype)]
	    -windowtype $s(wintype) -analysistype $s(atype) \
	    -lpcorder $s(lpcorder)]

    set file [tk_getSaveFile -title "Export spectral data" -initialfile spectrum.txt]
    if {$file == ""} return
    if {[catch {open $file w} out]} {
	return $out
    } else {
	set df [expr {([snd cget -rate] / 2.0) / $s(fftlen)}]
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proc OpenZoomWindow {} {
    global z v

    catch {destroy .zoom}
    catch {destroy .zmenu}
    toplevel .zoom -width $z(zoomwinw) -height $z(zoomwinh)
    wm title .zoom "Zoom view"
    wm geometry .zoom +$z(zoomwinx)+$z(zoomwiny)
    pack propagate .zoom 0

    frame .zoom.f
    label .zoom.f.lab -text "Press right mouse button for menu" -width 1 -relief sunken -bd 1 -anchor w
    pack .zoom.f.lab -side left -expand yes -fill x
    pack [button .zoom.f.xzoomB -text X-zoom -command {DrawZoom 1}] -side left
    pack [button .zoom.f.yizoomB -text "Y-zoom in" -command {DrawZoom 2}] -side left
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proc DrawZoom {factor} {
    global z v f

    if [winfo exists .zoom] {
	set geom [lindex [split [wm geometry .zoom] +] 0]
	set z(zoomwinw) [lindex [split $geom x] 0]
	set z(zoomwinh) [lindex [split $geom x] 1]
        set z(zoomwinx) [lindex [split [wm geometry .zoom] +] 1]
        set z(zoomwiny) [lindex [split [wm geometry .zoom] +] 2]
	set z(zoomwavw) [winfo width .zoom.c]
	set z(zoomwavh) [winfo height .zoom.c]
	set z(f) [expr $z(f) * $factor]

	set start [Marker2Sample m1]
	set end   [Marker2Sample m2]

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	puts $out "set v(showspeg) \{$v(showspeg)\}"
	puts $out "set v(linkfile) \{$v(linkfile)\}"

	puts $out "set f(skip)  $f(skip)"
	puts $out "set f(ipath) $f(ipath)"
	puts $out "set f(ihttp) $f(ihttp)"

	puts $out "set s(fftlen) $s(fftlen)"
	puts $out "set s(anabw)  $s(anabw)"
	puts $out "set s(fftlen)  $s(fftlen)"
	puts $out "set s(anabw)   $s(anabw)"
	puts $out "set s(wintype) $s(wintype)"
	puts $out "set s(ref)     $s(ref)"
	puts $out "set s(range)   $s(range)"
	puts $out "set s(atype)   $s(atype)"
	puts $out "set s(lpcorder) $s(lpcorder)"
      
      if {[info exists snack::snackogg]} {
	puts $out "set ogg(nombr) $::ogg(nombr)"
	puts $out "set ogg(maxbr) $::ogg(maxbr)"
	puts $out "set ogg(minbr) $::ogg(minbr)"
	puts $out "set ogg(com)   $::ogg(com)"
	puts $out "set ogg(query) $::ogg(query)"
      }

	close $out
    }
}

proc SetCursor {flag} {
    foreach widget [winfo children .] {
	$widget config -cursor $flag

Changes to snack/doc/FileFormat.html.

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*readProc;
<br>&nbsp; writeSamplesProc&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
*writeProc;
<br>&nbsp; seekProc&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
*seekProc;
<br>&nbsp; freeHeaderProc&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
*freeHeaderProc;
<br>&nbsp; configureProc&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*configureProc;
<br>&nbsp; struct Snack_FileFormat *nextPtr;
<br>} Snack_FileFormat;
<p>char *<b>name</b>
<p>char *<b>guessFileTypeProc </b>(char *buf, int len)
<p>int&nbsp; <b>getHeaderProc</b> (Sound *s, Tcl_Interp *interp, Tcl_Channel
ch, Tcl_Obj *obj, char *buf)
<p>char *<b>extensionFileTypeProc</b> (char *buf);
<p>int&nbsp; <b>putHeaderProc</b> (Sound *s, Tcl_Interp *interp, Tcl_Channel
ch, Tcl_Obj *obj, int length)
ch, Tcl_Obj *obj, int objc, Tcl_Obj *CONST objv[], int length)
<p>int&nbsp; <b>openProc</b> (Sound *s, Tcl_Interp *interp,Tcl_Channel
*ch, char *mode)
<p>int&nbsp; <b>closeProc </b>(Sound *s, Tcl_Interp *interp, Tcl_Channel
*ch)
<p>int&nbsp; <b>readSamplesProc</b> (Sound *s, Tcl_Interp *interp, Tcl_Channel
ch, char *inBuffer, float *outBuffer, int length)
<p>int&nbsp; <b>writeSamplesProc</b> (Sound *s, Tcl_Channel ch, Tcl_Obj
*obj, char *buffer, int length)
*obj, int start, int length)
<p>int&nbsp; <b>seekProc</b> (Sound *s, Tcl_Interp *interp, Tcl_Channel
ch, int position)
<p>void <b>freeHeaderProc</b> (Sound *s)
<p>int&nbsp; <b>configureProc</b>(Sound *s, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
<br>&nbsp;
<h3>
DESCRIPTION</h3>
<b>Snack_CreateFileFormat</b> is used to define a new kind of sound file
format. A number of procedures can be specified in a Snack_FileFormat structure
to handle sound data I/O, header parsing, etc. The file SphereFile.c serves
as good example of how these routines are intended to be used.

Changes to snack/doc/SnackLib.html.

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</head>
<body text="#000000" bgcolor="#FFFFFF" link="#0000EE" vlink="#551A8B" alink="#FE0000">

<center>
<h1>
<font face="Arial,Helvetica">Snack library functions</font></h1></center>
<tt>This is the public API of Snack to be used by C/C++-level extensions.
The functions are contained in Snack's stub library, libsnackstub2.0.a
(unix), snackstub20.lib (win). Linking with this will make your extension
The functions are contained in Snack's stub library, libsnackstub2.1.a
(unix), snackstub21.lib (win). Linking with this will make your extension
usable with different versions of Snack without recompilation.</tt><tt></tt>
<p><tt><a href="Callback.html">Snack_AddCallback</a></tt><tt></tt>
<p><tt><a href="AddSubCmd.html">Snack_AddSubCmd</a></tt><tt></tt>
<p><tt><a href="SampConv.html">Snack_Alaw2Lin</a></tt><tt></tt>
<p><tt><a href="CreateFilter.html">Snack_CreateFilterType</a></tt><tt></tt>
<p><tt><a href="FileFormat.html">Snack_CreateFileFormat</a></tt><tt></tt>
<p><tt><a href="SoundObj.html">Snack_DeleteSound</a></tt><tt></tt>

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If you have configured Snack to use the NIST/Sphere file format you have
to explicitly add this file format in your script using the
'package require snacksphere' command after 'package require snack'. 
This will make Snack automatically recognize this file format in addition 
to those already built-in, such as WAV, AU, and AIFF. 

See ../demos/tcl/SphereTest.tcl for an example on how to use the package.

Writing the Sphere file format is not supported yet.
Writing files in the Sphere file format is not supported yet.

There seems to be a problem with reading some long compressed
See ../demos/SphereTest.tcl for an example.
NIST/Sphere files. One solution is to use the program sph_convert
to convert these files to wav-format before using them.
The program is available from http://morph.ldc.upenn.edu/Using/

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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
   <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
   <meta name="GENERATOR" content="Mozilla/4.72 [en] (X11; U; Linux 2.2.14-5.0 i686) [Netscape]">
   <title>tkSnack manual v2.0</title>
   <title>tkSnack manual v2.1</title>
</head>
<body>

<h1>
Snack manual, version 2.0</h1>
Snack manual, version 2.1</h1>

<h2>
Installing Snack</h2>
First you need to install Snack according to its installation instruction.
In order to use Snack you need to put the file tkSnack.py somewhere in
your Python path.
<h2>
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use:
<blockquote>
<pre>tkSnack.create_waveform(NonSnackCanvas, sound=tada)</pre>
</blockquote>

<p>
<hr>
<br>Last modified: September 17, 2000
<br>
<pre><font face="Arial, Helvetica"><font color="#FF6600"><font size=-1>Last updated&nbsp;</font></font></font><script LANGUAGE="JavaScript">document.write(document.lastModified)</script>
</pre>
</body>
</html>

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<body text="#000000" bgcolor="#FFFFFF" link="#0000EE" vlink="#551A8B" alink="#FE0000">

<h1>

<hr></h1>

<h1>
<b>Snack v2.0.7 manual</b></h1>
<b>Snack v2.1.6 manual</b></h1>
<font color="#FF6600">Last updated&nbsp;</font><script LANGUAGE="JavaScript">document.write(document.lastModified)</script>

<dl>
<dt>
<a href="#audio">snack::audio</a></dt>

<dt>
<a href="#debug">snack::debug</a></dt>

<dt>
<a href="#filter">snack::filter</a></dt>

<dt>
<a href="#mixer">snack::mixer</a></dt>

<dt>
<a href="#sound">snack::sound</a></dt>

<dt>
<a href="#spectrogram">spectrogram canvas item</a></dt>

<dt>
<a href="#section">spectrum section canvas item</a></dt>

<dt>
<a href="#waveform">waveform canvas item</a></dt>

<dt>
&nbsp;</dt>

<dt>
<a href="#defpack">Standard extension packages</a> (sound, snackogg, snacksphere)</dt>

<dt>
&nbsp;</dt>

<dt>
<a href="SnackLib.html">Snack library</a></dt>
</dl>

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Useful to prevent clipping when playing many simultaneous sounds. If no
value is specified the current factor is returned, default is 1.0.</blockquote>
<b>snack::audio selectInput</b><i> ?device?</i>
<blockquote>Selects an audio input device to be used as default.</blockquote>
<b>snack::audio stop</b>
<ul>Stops all playback on the audio device.</ul>

<hr>
<h3>
<a NAME="debug"></a>NAME</h3>
snack::debug - Control Snack debugging facilities
<h3>
SYNOPSIS</h3>
<b>snack::debug</b> level ?logFile? ?audioDumpFile?
<h3>
DESCRIPTION</h3>
The debug command is used to control the debugging facilities of Snack. The level flag is an integer (1-5) specifying the detail level of the generated debug log. Level 1 just prints entry/exit points of sound commands during execution. An optional second filename argument can be given to specify a file where the log will be written. An optional third filename can be given to specify a file where a raw dump of all audio being played through the audio device is to be generated. The sound file will be created in RAW (headerless) format. Note that debugging has to be turned on for each individual <a href="#sound">sound</a> object of interest. Reports on bugs/problems with Snack should typically include a minimal script that shows the problem, any associated sound files, and a debug log in order to facilitate a quick solution.
<p>
<hr>
<h3>
<a NAME="filter"></a>NAME</h3>
snack::filter - Create and manipulate filters
<h3>
SYNOPSIS</h3>
<b>snack::filter type</b> ?arg? ...
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<i>shape</i>
is a value between 0.0 and 1.0 used to influence the shape of the signal.
<i>type</i>
can be any of rectangle, triangle, sine, noise, or sampled. In the case
of sampled the generator will repeatedly get data from the sound it is
applied on. <i>ntot</i> specifies how many samples to generate. The default,
-1, will generate forever.</blockquote>
<b>iir</b><i> ?-denominator list? ?-dither value? ?-impulse list? ?-noise value? ?-numerator list?</i>
<blockquote>Creates an IIR or FIR filter. For FIR filters the coefficients are given as a list using the -impulse option. For IIR filters the coefficients are given as lists using the options -numerator and -denominator. The option -dither specifies the amount of triangular dithering to add to the output. The option -noise  specifies the amount of additive gaussian noise to add to the output.</blockquote>
<b>map</b><i> val ?val val val ...?</i>
<blockquote>Applies a linear transformation on each sample frame. For one
channel sounds this is simply a multiplication. For multi-channel sounds,
a transformation matrix can be specified with values row by row. One column
per channel is needed. If mono output is used, only one row needs to be
specified. If stereo output is used, only two rows needs to be specified.
If only one value is specified and the filter is used for multi-channel
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<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; snack::sound ?name? ?options?
<br><a href="#DESCRIPTION">DESCRIPTION</a>
<br><a href="#CREATING SOUNDS">CREATING SOUNDS</a>
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href="#sfile">snack::sound
?name? ?-load filename?&nbsp;<i> </i>?-file filename?&nbsp; ?-channel channelname?
?-rate f? ?-channels n? ?-encoding fmt? ?-fileformat fmt? ?-skiphead n?
?-byteorder endianess? ?-guessproperties boolean?&nbsp; ?-buffersize n?
?-precision prec? -changecommand procedure?</a>
?-precision prec? -changecommand procedure? ?-debug level?</a>
<br><a href="#SOUND COMMAND">SOUND COMMAND</a>
<dd>
<a href="#sapp"><i>soundName </i><b>append variable</b> <b>?-rate f? ?-channels
n? ?-encoding fmt? ?-skiphead n? ?-byteorder endianess? ?-start start?
?-end end? ?-guessproperties boolean?</b></a></dd>

<dd>
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<dd>
<a href="#sdest"><i>soundName </i><b>destroy</b></a></dd>

<dd>
<a href="#sfft"><i>soundName </i><b>dBPowerSpectrum ?-start sample? ?-end
sample? ?-skip samples? ?-fftlength length? ?-windowlength length? ?-channel
channel? ?-preemphasis factor?</b></a></dd>
channel? ?-preemphasisfactor factor? ?-windowtype type? ?-analysistype type? ?-lpcorder n?</b></a></dd>

<dd>
<a href="#sfilter"><i>soundName </i><b>filter filterName ?-start sample?
?-end sample? ?-continedrain boolean? ?-progress procedure?</b></a></dd>

<dd>
<a href="#sflush"><i>soundName </i><b>flush</b></a></dd>
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<dd>
<a href="#spitch"><i>soundName </i><b>pitch ?-start start? ?-end</b> <b>end?
?-maxpitch val? ?-minpitch val? ?-progress callback?</b></a></dd>

<dd>
<a href="#splay"><i>soundName </i><b>play ?-start start? ?-end end? ?-output
jack? ?-blocking boolean? -command ?callback? ?-device outputDevice? ?-rate
rate? ?-channels channels?</b></a></dd>
jack? ?-blocking boolean? -command ?callback? ?-device outputDevice? ?-devicerate rate? ?-devicechannels channels?</b></a></dd>

<dd>
<a href="#spower"><i>soundName </i><b>power ?-start sample? ?-end
sample? ?-framelength length? ?-windowlength length? ?-windowtype type? ?-preemphasisfactor factor? ?-channel channel? ?-progress callback?</b></a></dd>

<dd>
<a href="#sread"><i>soundName </i><b>read </b><i>filename</i><b> ?-rate
f? ?-channels n? ?-encoding fmt? ?-skiphead n? ?-byteorder endianess??-start
start? ?-end end? ?-guessproperties boolea</b></a><b><a href="#srec">n?
?-progress procedure?</a></b></dd>

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<h3>
<a NAME="CREATING SOUNDS"></a>CREATING SOUNDS</h3>
The sound command is used to create sound objects. It can take several
different forms, depending on the option argument. The legal forms are:
<p><a NAME="sfile"></a><b>snack::sound </b><i>?soundName? ?-load filename?</i>&nbsp;<i>
?-file filename?</i>&nbsp;<i> ?-channel channelname? ?-rate f? ?-channels
n? ?-encoding fmt? ?-fileformat fmt? ?-skiphead n? ?-byteorder endianess?
?-guessproperties boolean?&nbsp; ?-buffersize n? ?-precision prec? ?-changecommand
?-guessproperties boolean?&nbsp; ?-buffersize n? ?-precision prec? ?-changecommand procedure? ?-debug level?</i>
procedure?</i>
<p><i>soundName</i> specifies the name of the sound. If it is omitted then
Snack picks a name of the form sound<i>n</i>, where <i>n</i> is an integer.
The <b>-load</b> option specifies that the file <i>filename</i> should
be read into memory after creating the sound. The <b>-file</b> option specifies
an on-disk file which should be linked to the sound. The <b>-channel</b>
option specifies that audio data resides on a channel which should be linked
to the sound. In these cases the audio data is not loaded into memory,
which is useful when playing large files or when using streaming audio.
A value of 1 or larger must be specified for the <b>-channels</b> option
(<b>Mono</b>, or <b>Stereo</b> are also valid). If not specified a default value of 1 is assumed.
Possible values for sample encoding format
Possible values for sample encoding format, given using the <b>-encoding</b> option,
are <b>Lin16</b>, <b>Lin8offset</b>, <b>Lin8</b>,<b> Lin24</b>,
<b>Lin32</b>, <b>Float</b>, <b>Alaw</b>, or <b>Mulaw</b>, and if not given the default encoding is <b>Lin16</b>. The option <b>-rate</b> can take any positive value but usually only sample rates supported by the audio hardware are useful. Note that the default value is 16000, a common value for speech related applications, but less frequent for other uses, such as music.
<b>Lin32</b>, <b>Float</b>, <b>Alaw</b>, or <b>Mulaw</b>. Default encoding is <b>Lin16</b>. The option <b>-rate</b> can take any positive value but usually only sample rates supported by the audio hardware are useful. Note that the default value is 16000, a common value for speech related applications, but less frequent for other uses, such as music.
<b>-fileformat</b> works as for the <b>read</b> command.
<b>-skiphead</b> is used to skip an unknown file header of size <b>n</b> bytes.
Byte order can be specified as littleEndian or bigEndian using the
<b>-byteorder</b> option. The option
<b>-guessproperties</b>
is used to specify that Snack should try to infer properties, such as byte
order, sample encoding format, and sample rate for a raw file by analyzing
the contents of the file. Byte order is almost always detected correctly.
For channel based sounds the
<b>-buffersize</b> option can be used to specify
the size of the internal buffer in samples. The option <b>-precision</b>
is used to specify if sound data is to be handled using simple or double
precision internally. -<b>changecommand</b> is used to specify a procedure
which is to be called every time a property of the sound is changed. This
is the Tcl level counterpart of Snack_AddCallback(). The procedure should
expect one argument, one of the strings <i>New, More, </i>or<i> Destroy</i>.
This feature is particularly useful when embedding sound objects in other
higher level constructs.
higher level constructs. The flag -<b>debug</b> is used to control debug output for operations on the sound object. The option takes a level argument, an integer in the range 1-5, specifying the detail of the trace information.
<p><a NAME="SOUND COMMAND"></a>SOUND COMMAND
<br>When a sound object is created, Snack also creates a new object command
whose name is the same as the sound. This command is used to invoke various
operations (or sub-commands) on the sound. This is the current set:
<p><a NAME="sapp"></a><i>soundName</i> <b>append</b> <i>variable</i> <b>?-rate
f? ?-channels n? ?-encoding fmt? ?-skiphead n? ?-byteorder endianess? ?-start
start? ?-end</b> <b>end? ?-fileformat fmt?</b> <b>?-guessproperties boolean?</b>
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<ul>Concatenates the sample data from <b>sound</b> to the end of <i>soundName</i>.
The sound to be added must be of the same type as the base sound, i.e. have the same sample rate, sample
encoding format, and number of channels). Note that even an initially empty sound has these properties defined. This command applies to in-memory
sounds only.</ul>
<a NAME="sconf"></a><i>soundName </i><b>configure option value ...</b>
<ul>The configure command is used to set options for a sound. Options can
be any of the following: <b>-load, -file, -channel, -rate, -channels, -encoding,
-skiphead, -byteorder, -guessproperties</b>, <b>-precision,</b> and <b>-buffersize</b>.
-skiphead, -byteorder, -guessproperties, -precision, -debug</b> and <b>-buffersize</b>.
See the <a href="#sfile">sound</a> command for more information on these.</ul>
<a NAME="sconv"></a><i>soundName </i><b>convert option value ...</b>
<ul>The convert command is used to convert a sound to a different sample
encoding, sample rate, or number of channels. Options can be any of the
following: <b>-rate, -channels,</b> <b>-encoding, </b>and <b>-progress</b>.
A value of 1 or larger must be specified for the <b>-channels</b> option
(<b>Mono</b>, or <b>Stereo</b> are also valid). Only conversions from many
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bigEndian or littleEndian.
<p><i>soundName </i><b>data ?-start start? ?-end end?</b> <b>?-fileformat
fileformat? -byteorder ?endianess?</b>
<p>This command applies to in-memory sounds only.</ul>
<a NAME="sdest"></a><i>soundName </i><b>destroy</b>
<ul>Removes the sound command and frees the storage associated with it.</ul>
<a NAME="sfft"></a><i>soundName </i><b>dBPowerSpectrum</b> <b>?-start sample?
?-end sample? ?-fftlength length? ?-windowlength length? ?</b>-<b>windowtype
type?</b><i> </i><b>?-skip samples? ?-channel channel? ?-preemphasisfactor
factor?</b>
?-end sample? ?-fftlength length? ?-windowlength length? ?-windowtype
type? ?-skip samples? ?-channel channel? ?-preemphasisfactor
factor? ?-analysistype type? ?-lpcorder n?</b>
<ul>Computes the log FFT power spectrum of the sound at <b>-start</b> and
returns a list of dB values. See the
returns a list of dB values. Optionally an end point can be given, using
<a href="#section">section item</a>
for the rest of the options. Optionally an ending point can be given, using
<b>-end</b>.
In this case the result is the average of consecutive FFT's in the specified
range. Their default spacing is taken from <b>-fftlength</b> but this can
be changed using the <b>-skip</b> option which specifies how many points
to move the FFT window forward at each step.</ul>
to move the FFT window forward at each step. See the <a href="#section">section item</a> for the rest of the options. </ul>
<a NAME="sfilter"></a><i>soundName </i><b>filter filterName ?-start sample?
?-end sample? ?-continuedrain boolean? ?-progress procedure?</b>
<ul>Applies the <a href="#filter">filter</a> <b>filterName</b> to the sound.
Optionally, a range to apply the filter on can be specified. The <b>-continuedrain
</b>option
specifies whether the filter should be allowed to drain out past the end
point. See the <a href="#sread">read</a> command for a description on how
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all of them are paused using <b>pause</b>.</ul>
<a NAME="spitch"></a><i>soundName </i><b>pitch ?-start start? ?-endend?
?-maxpitch val? ?-minpitch val? ?-progress procedure?</b>
<ul>Returns a list of pitch values computed using the AMDF method. The
values are spaced at 10ms intervals. A range of samples can be given using
<b>-start</b>
and <b>-end</b>. If a frequency range of valid pitch values is known this
can be specified using the options <b>-maxpitch</b> and <b>-minpitch</b>.
can be specified using the options <b>-maxpitch</b> (default 400) and <b>-minpitch</b> (default 60).
See the <a href="#sread">read</a> command for a description on how to use
the <b>-progress</b> option.</ul>
<a NAME="splay"></a><i>soundName </i><b>play ?-start start? ?-end end?
?-output jack??-blocking boolean? ?-command callback? ?-device outputDevice?
?-filter filter? ?-rate f? ?-channels n?</b>
<ul>Plays a sound. A range of samples to play can be specified using the
?-filter filter? ?-devicerate f? ?-devicechannels n?</b>
<ul>Plays a sound. A range of samples to be played can be specified using the
<b>-start</b>
and <b>-end</b> options. The <b>-output</b> option is used to specify any
of the possible output ports returned by the <a href="#outputs">audio outputs</a>
command. The <b>-blocking</b> option is used to specify whether playback
should be asynchronous or not, i.e. if it is to be played in the background
or if the <b>play</b> command should return only after the sound has been
played. Asynchronous playback from tclsh is only possible if the event
loop is running, using for example <b>vwait</b>. The <b>-command</b> option
specifies a command to be executed when the end of the sound is reached.
The <b>-device</b> option selects which audio output device to use. The
<b>-filter</b>
option is used to specify a <a href="#filter">filter</a> which is to be
applied during output. The audio device can be opened with different properties
from those of the sound object using <b>-rate</b> and <b>-channels</b>,
from those of the sound object using <b>-devicerate</b> and <b>-devicechannels</b>,
which might be useful in some rare cases. The option
<b>-starttime</b>
is used to schedule the start of playback (in ms) relative to a previous
play operation. All options are ignored if <b>play</b> is used to resume
a paused play operation. If a <b>play </b>command is issued while another
one is in progress, the latter one is queued up and starts to play as soon
as possible. The lag before this new sound is audible can be controlled
one is in progress, the new sound will start to play as soon
as possible given the internal buffering. The lag before the sound is audible can be controlled
using the <a href="#latency">snack::audio latency</a> command.</ul>
<a NAME="spower"></a><i>soundName </i><b>power ?-start sample? ?-end
sample? ?-framelength length? ?-windowlength length? ?-windowtype type? ?-preemphasisfactor factor? ?-channel channel? ?-progress callback?</b>
<ul>Returns a list of windowed log power values. The <b>-framelength</b> option specifies the intervals between the values. The option <b>-windowtype</b> is used to select windowing function, (valid values are Hamming, Hanning, Bartlett, Blackman, or Rectangle). <b>-windowlength</b> specifies the size
of the window in points. -<b>preemphasisfactor</b> is used to specify the amount of preemphasis applied to the signal prior to windowing. A range of samples can be given using
<b>-start</b> and <b>-end</b>. See the <a href="#sread">read</a> command for a description on how to use the <b>-progress</b> option and the <a href="#section">section item</a> for the <b>-channel</b> option.</ul>
<a NAME="sread"></a><i>soundName </i><b>read </b><i>filename</i><b> ?-fileformat
fmt?</b> <b>?-rate f? ?-channels n? ?-encoding fmt? ?-skiphead n? ?-byteorder
endianess? ?-start start? ?-end end?</b> <b>?-guessproperties boolean?
?-progress procedure?</b>
<ul>Reads new sound data from a file. Current supported file formats are
WAV, MP3, AU, SND, AIFF, SD, SMP, CSL, and RAW binary. The command returns
the file format detected. It is possible to force a file to be read as
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SYNOPSIS</h3>
<i>pathName</i> <b>create</b> <b>spectrogram</b> x y ?options value option
value ...?
<h3>
OPTIONS</h3>

<dd>
<i>-</i><b>anchor</b><i> anchorPos</i></dd>
-<b>anchor</b><i> anchorPos</i></dd>

<dd>
<i>-</i><b>brightness</b><i> value</i></dd>
-<b>brightness</b><i> value</i></dd>

<dd>
<i>-</i><b>channel</b><i> channel</i></dd>
-<b>channel</b><i> channel</i></dd>

<dd>
<i>-</i><b>colormap</b><i> colorlist</i></dd>
-<b>colormap</b><i> colorlist</i></dd>

<dd>
<i>-</i><b>contrast</b><i> value</i></dd>
-<b>contrast</b><i> value</i></dd>

<dd>
-<b>debug</b><i> level</i></dd>

<dd>
<i>-</i><b>end</b><i> sample</i></dd>
-<b>end</b><i> sample</i></dd>

<dd>
-<b>fftlength</b><i> length</i></dd>

<dd>
<i>-</i><b>gridcolor</b><i> color</i></dd>
-<b>gridcolor</b><i> color</i></dd>

<dd>
<i>-</i><b>gridfspacing</b><i> value</i></dd>
-<b>gridfspacing</b><i> value</i></dd>

<dd>
<i>-</i><b>gridtspacing</b><i> value</i></dd>
-<b>gridtspacing</b><i> value</i></dd>

<dd>
-<b>height</b><i> size</i></dd>

<dd>
-<b>pixelspersecond</b><i> value</i></dd>

<dd>
-<b>preemphasisfactor</b><i> factor</i></dd>

<dd>
-<b>sound</b><i> name</i></dd>

<dd>
<i>-</i><b>start</b><i> sample</i></dd>
-<b>start</b><i> sample</i></dd>

<dd>
-<b>tags </b><i>tagList</i></dd>

<dd>
<i>-</i><b>topfrequency</b><i> frequency</i></dd>
-<b>topfrequency</b><i> frequency</i></dd>

<dd>
-<b>width</b><i> size</i></dd>

<dd>
-<b>windowtype</b><i> type</i></dd>

<dd>
-<b>winlength</b><i> length</i></dd>

<h3>
DESCRIPTION</h3>
This command draws a spectrogram of a sound on a canvas. The options <i>-</i><b>anchor</b>,
and -<b>tags</b> work as for ordinary Tk canvas items. -<b>sound</b> specifies
This command draws the spectrogram of a sound. The options -<b>anchor</b>,
and -<b>tags</b> work as for other Tk canvas items. -<b>sound</b> specifies
which sound object to link to and -<b>height</b> the height of the spectrogram.
The option <b>-fftlength</b> specifies the number of FFT points (8, 16,
32, 64, 128, 256, 512, 1024, 2048, or 4096). The option <b>-windowtype</b>
is used to select windowing function, (valid values are Hamming, Hanning,
32, 64, 128, 256, 512, 1024, 2048, or 4096). The default value is 256. 
The option <b>-windowtype</b> is used to select windowing function, (valid values are Hamming, Hanning, Bartlett, Blackman, or Rectangle). The default window type is Hamming. <b>-winlength</b> specifies the size
Bartlett, Blackman, or Rectangle). <b>-winlength</b> specifies the size
of the hamming window, which should be equal to or less than the number
of FFT points. -<b>preemphasisfactor</b> is used to specify the amount
of preemphasis applied to the signal prior to the FFT calculation. <b>-start</b>
of FFT points. The default window length is 128. -<b>preemphasisfactor</b> is used to specify the amount
of preemphasis applied to the signal prior to the FFT calculation, default 0.97. <b>-start</b>
and <b>-end</b> controls which part of the sound to display. <b>-pixelspersecond</b>
determines the scaling factor in the x-direction. The <b>-width</b> option
specifies the width of the spectrogram. If both <b>-width</b> and <b>-pixelspersecond</b>
are specified the spectrogram will be cut at one end depending on if a
<b>-start</b>
or <b>-end</b> option was also given. Use the <b>-channel</b> option to
or <b>-end</b> option was also given. Currently, spectrograms
have a width limit of 32767 pixels. Use the <b>-channel</b> option to
select which channel to show for multichannel sounds. Use left, right,
both, all, -1 (all) or a channel number counting from 0 (left). The default
is to show all, i.e. to add all channels. <i>-</i><b>brightness</b> and
<i>-</i><b>contrast</b>
takes values beteween -100.0 and 100.0 with the default being 0.0. <i>-</i><b>topfrequency</b>
is to show all, i.e. to add all channels. -<b>brightness</b> and
-<b>contrast</b>
takes values beteween -100.0 and 100.0 with the default being 0.0. -<b>topfrequency</b>
is the frequency value at the top of the spectrogram, default is the Nyquist
frequency. <i>-</i><b>gridtspacing</b> is the spacing between markers in
frequency. -<b>gridtspacing</b> is the spacing between markers in
seconds (default 0 means no grid) and
<i>-</i><b>gridfspacing</b> is the
-<b>gridfspacing</b> is the
frequency spacing in Hz (default 0 means no grid). -<b>gridcolor</b> specifies
the color of the grid. A colormap for the spectrogram is given with the
<i>-</i><b>colormap</b>
-<b>colormap</b>
option. It takes a list of colors as parameter and at least two must be
specified. The first color is used for the lowest intensity in the spectrogram.
An empty list gives the default 32-level grey scale. Currently, spectrograms
An empty list gives the default 32-level grey scale. The flag -<b>debug</b> is used to control debug output for the item. The option takes a level argument, an integer in the range 1-5, specifying the detail of the trace information.
have a width limit of 32767 pixels.
<br>See also the code examples in the widget demonstration.
<h3>

<hr></h3>

<h3>
<a NAME="section"></a>NAME</h3>
section - Spectrum section canvas item
<h3>
SYNOPSIS</h3>
<i>pathName</i> <b>create</b> <b>section</b> x y ?options value option
value ...?
<h3>
OPTIONS</h3>

<dd>
<i>-</i><b>anchor</b><i> anchorPos</i></dd>
-<b>anchor</b><i> anchorPos</i></dd>

<dd>
-<b>analysistype</b><i> type</i></dd>

<dd>
<i>-</i><b>channel</b><i> channel</i></dd>
-<b>channel</b><i> channel</i></dd>

<dd>
-<b>debug</b><i> level</i></dd>

<dd>
<i>-</i><b>end</b><i> sample</i></dd>
-<b>end</b><i> sample</i></dd>

<dd>
-<b>fftlength</b><i> length</i></dd>

<dd>
<i>-</i><b>fill</b><i> color</i></dd>
-<b>fill</b><i> color</i></dd>

<dd>
<i>-</i><b>frame</b><i> boolean</i></dd>
-<b>frame</b><i> boolean</i></dd>

<dd>
-<b>height</b><i> size</i></dd>

<dd>
-<b>lpcorder</b><i> n</i></dd>

<dd>
<i>-</i><b>maxvalue</b><i> value</i></dd>
-<b>maxvalue</b><i> value</i></dd>

<dd>
<i>-</i><b>minvalue</b><i> value</i></dd>
-<b>minvalue</b><i> value</i></dd>

<dd>
-<b>preemphasisfactor</b><i> factor</i></dd>

<dd>
<b>-skip</b><i> points</i></dd>

<dd>
-<b>sound</b><i> name</i></dd>

<dd>
<i>-</i><b>start</b><i> sample</i></dd>
-<b>start</b><i> sample</i></dd>

<dd>
<i>-</i><b>stipple</b><i> value</i></dd>
-<b>stipple</b><i> value</i></dd>

<dd>
-<b>tags </b><i>tagList</i></dd>

<dd>
<i>-</i><b>topfrequency</b><i> frequency</i></dd>
-<b>topfrequency</b><i> frequency</i></dd>

<dd>
-<b>width</b><i> size</i></dd>

<dd>
-<b>windowtype</b><i> type</i></dd>

<dd>
-<b>winlength</b><i> length</i></dd>

<h3>
DESCRIPTION</h3>
This command draws an FFT log power spectrum section of a sound on a canvas.
The options <i>-</i><b>anchor</b>, -<b>fill</b>, -<b>stipple</b>, and -<b>tags</b>
work as for ordinary Tk canvas line items. -<b>sound</b> specifies which
This command draws the FFT log power spectrum section of a sound.
The options -<b>anchor</b>, -<b>fill</b>, -<b>stipple</b>, and -<b>tags</b>
work as for other Tk canvas line items. -<b>sound</b> specifies which
sound object to link to and -<b>height</b> and -<b>width</b> the height/width
of the section.The option <b>-fftlength</b> specifies the number of FFT
points (8, 16, 32, 64, 128, 256, 512, 1024, 2048, or 4096). The option
of the section. The option <b>-fftlength</b> specifies the number of FFT
points (8, 16, 32, 64, 128, 256, 512, 1024, 2048, or 4096). The default value is 512. The option <b>-windowtype</b> is used to select windowing function, (valid values are Hamming, Hanning, Bartlett, Blackman, or Rectangle). The default window type is Hamming. <b>-analysistype</b> is either <b>FFT</b> (default) or <b>LPC</b>, for LPC analysis the order is specified using <b>-lpcorder</b> (default 20). <b>-winlength</b> specifies the size
<b>-windowtype</b>
is used to select windowing function, (valid values are Hamming, Hanning,
Bartlett, Blackman, or Rectangle). <b>-winlength</b> specifies the size
of the window, which should be equal to or less than the number of FFT
points. -<b>preemphasisfactor</b> is used to specify the amount of preemphasis
applied to the signal prior to the FFT calculation.
points. The default window length is 128. -<b>preemphasisfactor</b> is used to specify the amount of preemphasis
applied to the signal prior to the FFT calculation (default 0.0).
<b>-start</b> and <b>-end</b>
controls which part of the sound to display.
<i>-</i><b>topfrequency</b>
-<b>topfrequency</b>
is the frequency value at the right end of the section. -<b>maxvalue</b>
and -<b>minvalue</b> specify the range (in dB) which will be shown (default
0.0 to -80.0). Use the <b>-channel</b> option to select which channel to
show for multichannel sounds. Use left, right, both, all, -1 (all) or a
channel number counting from 0 (left). The default is to show all, i.e.
to add all channels. <b>-frame</b> specifies whether a frame will be drawn
around the spectrum section.
around the spectrum section. The flag -<b>debug</b> is used to control debug output for the item. The option takes a level argument, an integer in the range 1-5, specifying the detail of the trace information.
<br>See also the code examples in the widget demonstration.
<p>
<hr>
<h3>
<a NAME="waveform"></a>NAME</h3>
waveform - Waveform canvas item
<h3>
SYNOPSIS</h3>
<i>pathName</i> <b>create</b> <b>waveform </b>x y ?option value option
value ...?
<h3>
OPTIONS</h3>

<dd>
<i>-</i><b>anchor</b><i> anchorPos</i></dd>
-<b>anchor</b><i> anchorPos</i></dd>

<dd>
<i>-</i><b>channel</b><i> channel</i></dd>
-<b>channel</b><i> channel</i></dd>

<dd>
-<b>debug</b><i> level</i></dd>

<dd>
-<b>end </b><i>sample</i></dd>

<dd>
-<b>fill </b><i>color</i></dd>

<dd>
<i>-</i><b>frame</b><i> boolean</i></dd>
-<b>frame</b><i> boolean</i></dd>

<dd>
-<b>height</b><i> size</i></dd>

<dd>
<i>-</i><b>limit</b><i> value</i></dd>
-<b>limit</b><i> value</i></dd>

<dd>
-<b>pixelspersecond</b><i> value</i></dd>

<dd>
<b>-progress</b> <i>procedure</i></dd>

<dd>
<i>-</i><b>shapefile</b><i> filename</i></dd>
-<b>shapefile</b><i> filename</i></dd>

<dd>
-<b>sound</b><i> name</i></dd>

<dd>
-<b>start </b><i>sample</i></dd>

<dd>
-<b>stipple </b><i>bitmap</i></dd>

<dd>
<i>-</i><b>subsample</b><i> value</i></dd>
-<b>subsample</b><i> value</i></dd>

<dd>
-<b>tags </b><i>tagList</i></dd>

<dd>
-<b>width</b><i> size</i></dd>

<dd>
-<b>zerolevel</b><i> boolean</i></dd>

<h3>
DESCRIPTION</h3>
This command draws the waveform of a sound on a canvas. The options <i>-</i><b>anchor</b>,
-<b>fill</b>, -<b>stipple</b>, and -<b>tags</b> work as for ordinary Tk
This command draws the waveform of a sound. The options -<b>anchor</b>,
-<b>fill</b>, -<b>stipple</b>, and -<b>tags</b> work as for other Tk
canvas line items. -<b>sound</b> specifies which sound object to link to
and -<b>height</b> the height of the waveform. The options <b>-start</b>
and <b>-end</b> controls which part of the sound to display. -<b>pixelspersecond</b>
determines the scaling factor in the x-direction. The <b>-width</b> option
specifies the width of the waveform. If both <b>-width</b> and <b>-pixelspersecond</b>
are specified the waveform will be cut at one end depending on if a <b>-start</b>
or <b>-end</b> option was also given. Use the <b>-channel</b> option to
select which channel to show for multichannel sounds. Use left, right,
both, all, -1 (all) or a channel number counting from 0. The default is
to show all, i.e. to add all channels. Use <b>-limit</b> to specify the
maximum shown value for the sound amplitude. <b>-zerolevel</b> specifies
whether the zero level will be displayed and <b>-frame</b> whether a frame
whether the zero level will be displayed (default yes) and <b>-frame</b> whether a frame will be drawn around the waveform (default no). The -<b>subsample</b> option
will be drawn around the waveform. The <i>-</i><b>subsample</b> option
is useful for large sounds to specify how precisely they should be analyzed
for shape calculation. The default value 1 uses every sample in the sound
to draw the waveform envelope, which can be slow for large sounds. A value
of 10 uses every 10th. Care should be used when specifying this because
a large value could lead to an incorrect envelope shape. The option -<b>shapefile</b>
a large value could lead to an incorrect envelope shape. The option -<b>shapefile</b> is used to specify a file for storing/retrieving precomputed waveform shape
is used to specify a file for storing/retrieving precomputed waveform shape
information. If the file doesn't exist it is created. If it exists it is
information. The file specified is created if it does not already exist. If it exists it is
accessed instead of the sound data itself, thus speeding up on-screen display.
There exists two convenience routines, snack::deleteInvalidShapeFile and
snack::makeShapeFileDeleteable, which can be used to enclose a <b>create
waveform</b> statement when using the shape file functionality. These will
make sure that shape files are handled properly, see the demo cool.tcl,
for an example of this. See the <a href="#sread">read</a> command for a
description on how to use the <b>-progress</b> option.
description on how to use the <b>-progress</b> option. The flag <b>-debug</b> is used to control debug output for the item. The option takes a level argument, an integer in the range 1-5, specifying the detail of the trace information.
<br>See also code examples in the widget demonstration.
<p>
<hr>
<p>The command <b>package require snack</b> gives you access to all commands
described above.
<br>There is also a package called <b>sound</b> which gives you the <b>snack::audio,
snack::filter, snack::mixer, </b>and <b>snack::sound </b>commands. This is useful on some systems if you want to use the tclsh interpreter.
<a NAME="defpack"></a>
<h3>Standard extension packages</h3>
<p>The following packages are included in the Snack distribution or can be downloaded separately.
<p><b>sound</b>
<ul>The <b>sound</b> package gives you the <b>snack::audio, snack::filter, snack::mixer, </b>and <b>snack::sound </b>commands. Basicly the same functions as the <b>snack</b> package except for graphics. This is useful on some systems if you want to use the tclsh interpreter.</ul>
<p><b>snackogg</b>
<ul>The <b>snackogg</b> package adds support for the Ogg/Vorbis compressed sound file format. Ogg format files and streams are detected automatically. Encoding is supported. Simply use the extension .ogg when writing files or use the option <b>-fileformat ogg</b>. When creating Ogg files the additional options <b>-nominalbitrate</b>, <b>-maxbitrate</b>, <b>-minbitrate</b>, and <b>-comment</b> apply.</ul>
<p><b>snacksphere</b>
<ul>The <b>snacksphere</b> package adds support for reading the NIST/Sphere sound file formats. Sphere files are detected automatically.</ul>
<p>
<hr WIDTH="100%">
<br><a href="http://www.speech.kth.se/snack/index.html">Snack home</a>
</body>
</html>

Changes to snack/ext/README.

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How to write extensions to Snack
-----------------------------------
--------------------------------

You can create custom commands that operate on Snack's sound objects. These new
commands should be written in C/C++ and can be used just as any other Snack
sound command. To invoke 'newcommand' on the sound 'snd' you would type:

snd newcommand

Use Snack_AddSubCmd() as shown in the example square.c to associate a new
command name and a custom C/C++ function.

The preferred way of creating a Snack extension is to link with
Snack's stub library (unix: libsnackstub2.0.a, win: snackstub20.lib).
Snack's stub library (unix: libsnackstub2.1.a, win: snackstub21.lib).
In this way your extension should be usable with different versions of Snack
without recompilation.
More general information on stub libraries at http://dev.scriptics.com/doc/tea/

It is also possible to use the old method and link with libsnack.so (HP: .sl).
On Unix you might also have to set the variable LD_LIBRARY_PATH
(HP: SHLIB_PATH) to the directory containing the library file. The drawback
with this method is that you'll have to recompile your extension with each
new release of Snack and Tcl.



Building the sample extension on Unix
-------------------------------------

change directory to the example extension directory (where this README file
is located)
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setenv LD_LIBRARY_PATH `pwd`

Run the Snack extension using

./test.tcl


Windows
-------

Building the sample extension on Windows
----------------------------------------

The Snack MSVC workspace (win/snack.dsw) contains a project for the example
square extension.  Try the extension using the test.tcl script in ext/.



Package loading
----------------------------------------

The demonstration script uses the 'load' command to load the extension.
Is is also possible to load it in the same manner as the Snack package,
using a 'package require' command.
Create a pkgIndex.tcl-file in the same directory as the binary with the
following statement

package ifneeded square 1.0 [list load [file join $dir libsquare[info sharedlibextension]]]

It is now possible to install your extension as a Tcl package in the same
way as Snack. Put the library file and the index file in a sibling 
directory to the Snack directory. Use the command 'package require square'.
On Unix it might be necessary to set the environment variable TCLLIBPATH
in order for this to work.
If you just built Snack and the sample extension you use this command

setenv TCLLIBPATH "~/snack2.1.6/unix ~/snack2.1.6/ext $TCLLIBPATH"

Note that the list of directories is space separated.

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# PROP Use_MFC 0
# PROP Use_Debug_Libraries 0
# PROP Output_Dir "Release"
# PROP Intermediate_Dir "Release"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SQUARE_EXPORTS" /YX /FD /c
# ADD CPP /nologo /MT /W3 /GX /O2 /I "C:\Program Files\Tcl\include" /I "../generic" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SQUARE_EXPORTS" /D "USE_SNACK_STUBS" /D "USE_TCL_STUBS" /D "WIN" /YX /FD /c
# ADD CPP /nologo /MT /W3 /GX /O2 /I "C:\Tcl\include" /I "../generic" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SQUARE_EXPORTS" /D "USE_SNACK_STUBS" /D "USE_TCL_STUBS" /D "WIN" /YX /FD /c
# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD BASE RSC /l 0x409 /d "NDEBUG"
# ADD RSC /l 0x409 /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib snackstub20.lib tclstub83.lib /nologo /dll /machine:I386 /nodefaultlib:"libc.lib" /nodefaultlib:"msvcrt.lib" /out:"libsquare.dll" /libpath:"C:\Program Files\Tcl\lib" /libpath:"C:\Program Files\Tcl\lib\snack2.0\"
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib snackstub21.lib tclstub83.lib /nologo /dll /machine:I386 /nodefaultlib:"libc.lib" /nodefaultlib:"msvcrt.lib" /out:"libsquare.dll" /libpath:"C:\Tcl\lib" /libpath:"C:\Tcl\lib\snack2.1\"

!ELSEIF  "$(CFG)" == "square - Win32 Debug"

# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 1
# PROP BASE Output_Dir "Debug"
# PROP BASE Intermediate_Dir "Debug"
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 1
# PROP Output_Dir "Debug"
# PROP Intermediate_Dir "Debug"
# PROP Target_Dir ""
# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SQUARE_EXPORTS" /YX /FD /GZ /c
# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /I "C:\Program Files\Tcl\include" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SQUARE_EXPORTS" /D "USE_SNACK_STUBS" /D "USE_TCL_STUBS" /D "USE_TK_STUBS" /D "WIN" /YX /FD /GZ /c
# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /I "C:\Tcl\include" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SQUARE_EXPORTS" /D "USE_SNACK_STUBS" /D "USE_TCL_STUBS" /D "USE_TK_STUBS" /D "WIN" /YX /FD /GZ /c
# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
# ADD BASE RSC /l 0x409 /d "_DEBUG"
# ADD RSC /l 0x409 /d "_DEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /pdbtype:sept
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib snackstub20.lib tclstub83.lib /nologo /dll /debug /machine:I386 /pdbtype:sept /out:"libsquare.dll" /out:"libsquare.dll" /libpath:"C:\Program Files\Tcl\lib" /libpath:"..\win\Debug"
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib snackstub21.lib tclstub83.lib /nologo /dll /debug /machine:I386 /pdbtype:sept /out:"libsquare.dll" /out:"libsquare.dll" /libpath:"C:\Tcl\lib" /libpath:"..\win\Debug"

!ENDIF 

# Begin Target

# Name "square - Win32 Release"
# Name "square - Win32 Debug"

Added snack/generic/SnackOgg.c.


















































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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#include <math.h>
#include <vorbis/codec.h>
#include <vorbis/vorbisenc.h>
#include <tcl.h>
#include "snack.h"
#include <stdlib.h>
#include <time.h>

#if defined(__WIN32__)
#  include <io.h>
#  include <fcntl.h>
#  define WIN32_LEAN_AND_MEAN
#  include <windows.h>
#  undef WIN32_LEAN_AND_MEAN
#  define EXPORT(a,b) __declspec(dllexport) a b
BOOL APIENTRY
DllMain(HINSTANCE hInst, DWORD reason, LPVOID reserved)
{
  return TRUE;
}
#else
#  define EXPORT(a,b) a b
#endif


/* vorbisfile.h */

/* The function prototypes for the callbacks are basically the same as for
 * the stdio functions fread, fseek, fclose, ftell. 
 * The one difference is that the FILE * arguments have been replaced with
 * a void * - this is to be used as a pointer to whatever internal data these
 * functions might need. In the stdio case, it's just a FILE * cast to a void *
 * 
 * If you use other functions, check the docs for these functions and return
 * the right values. For seek_func(), you *MUST* return -1 if the stream is
 * unseekable
 */
typedef struct {
  size_t (*read_func)  (void *ptr, size_t size, size_t nmemb, void *datasource);
  int    (*seek_func)  (void *datasource, ogg_int64_t offset, int whence);
  int    (*close_func) (void *datasource);
  long   (*tell_func)  (void *datasource);
} ov_callbacks;


typedef struct OggVorbis_File {
  Tcl_Channel             datasource; /* Pointer to a FILE *, etc. */
  int              seekable;
  ogg_int64_t          offset;
  ogg_int64_t          end;
  ogg_sync_state   oy; 

  /* If the FILE handle isn't seekable (eg, a pipe), only the current
     stream appears */
  int              links;
  ogg_int64_t          *offsets;
  ogg_int64_t          *dataoffsets;
  long             *serialnos;
  ogg_int64_t          *pcmlengths;
  vorbis_info      *vi;
  vorbis_comment   *vc;

  /* Decoding working state local storage */
  ogg_int64_t          pcm_offset;
  int              decode_ready;
  long             current_serialno;
  int              current_link;

  double           bittrack;
  double           samptrack;

  ogg_stream_state os; /* take physical pages, weld into a logical
                          stream of packets */
  vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */
  vorbis_block     vb; /* local working space for packet->PCM decode */

  ov_callbacks callbacks;

  int maxbitrate;
  int minbitrate;
  int nombitrate;
  Tcl_Obj *commList;

} OggVorbis_File;

int ov_clear(Tcl_Interp *interp, OggVorbis_File *vf);
int ov_open(Tcl_Interp *interp, Tcl_Channel *f, OggVorbis_File *vf,
	    char *initial,long ibytes);
int ov_open_callbacks(Tcl_Interp *interp, Tcl_Channel *datasource,
		      OggVorbis_File *vf,char *initial,
		      long ibytes, ov_callbacks callbacks);

long ov_bitrate(OggVorbis_File *vf,int i);
long ov_bitrate_instant(OggVorbis_File *vf);
long ov_streams(OggVorbis_File *vf);
long ov_seekable(OggVorbis_File *vf);
long ov_serialnumber(OggVorbis_File *vf,int i);

ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i);
ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i);
double ov_time_total(OggVorbis_File *vf,int i);

int ov_raw_seek(OggVorbis_File *vf,long pos);
int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos);
int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos);
int ov_time_seek(OggVorbis_File *vf,double pos);
int ov_time_seek_page(OggVorbis_File *vf,double pos);

ogg_int64_t ov_raw_tell(OggVorbis_File *vf);
ogg_int64_t ov_pcm_tell(OggVorbis_File *vf);
double ov_time_tell(OggVorbis_File *vf);

vorbis_info *ov_info(OggVorbis_File *vf,int link);
vorbis_comment *ov_comment(OggVorbis_File *vf,int link);

long ov_read(OggVorbis_File *vf,char *buffer,int length,
		    int bigendianp,int word,int sgned,int *bitstream);

/* vorbisfile.c */

/********************************************************************
 *                                                                  *
 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
 *                                                                  *
 * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001             *
 * by the XIPHOPHORUS Company http://www.xiph.org/                  *

 ********************************************************************

 function: stdio-based convenience library for opening/seeking/decoding
 last mod: $Id: vorbisfile.c,v 1.41 2001/02/26 03:50:43 xiphmont Exp $

 ********************************************************************/

#include <stdio.h>
#include <errno.h>
#include <string.h>

/* misc.h */
extern void *_vorbis_block_alloc(vorbis_block *vb,long bytes);
extern void _vorbis_block_ripcord(vorbis_block *vb);
extern void _analysis_output(char *base,int i,float *v,int n,int bark,int dB);

#ifdef DEBUG_LEAKS
extern void *_VDBG_malloc(void *ptr,long bytes,char *file,long line); 
extern void _VDBG_free(void *ptr,char *file,long line); 

#ifndef MISC_C 
#undef _ogg_malloc
#undef _ogg_calloc
#undef _ogg_realloc
#undef _ogg_free

#define _ogg_malloc(x) _VDBG__ogg_malloc(NULL,(x),__FILE__,__LINE__)
#define _ogg_calloc(x,y) _VDBG__ogg_malloc(NULL,(x)*(y),__FILE__,__LINE__)
#define _ogg_realloc(x,y) _VDBG__ogg_malloc((x),(y),__FILE__,__LINE__)
#define _ogg_free(x) _VDBG__ogg_free((x),__FILE__,__LINE__)
#endif
#endif

/* os.h */
#include <ogg/os_types.h>

#ifndef _V_IFDEFJAIL_H_
#  define _V_IFDEFJAIL_H_

#  ifdef __GNUC__
#    define STIN static inline
#  elif _WIN32
#    define STIN static __inline
#else
#  define STIN static
#endif

#ifndef M_PI
#  define M_PI (3.1415926536f)
#endif

#ifdef _WIN32
#  include <malloc.h>
#  define rint(x)   (floor((x)+0.5f)) 
#  define NO_FLOAT_MATH_LIB
#  define FAST_HYPOT(a, b) sqrt((a)*(a) + (b)*(b))
#endif

#ifndef __GNUC__
#  define NO_FLOAT_MATH_LIB
#endif

#ifdef DARWIN
#  define NO_FLOAT_MATH_LIB
#endif

#ifndef NO_FLOAT_MATH_LIB
#  define sqrt sqrtf
#  define log logf
#  define exp expf
#  define pow powf
#  define acos acosf
#  define atan atanf
#  define frexp frexpf
#  define rint rintf
#endif


#ifndef FAST_HYPOT
#  define FAST_HYPOT hypot
#endif

#endif

#ifdef HAVE_ALLOCA_H
#  include <alloca.h>
#endif

#ifdef USE_MEMORY_H
#  include <memory.h>
#endif

#ifndef min
#  define min(x,y)  ((x)>(y)?(y):(x))
#endif

#ifndef max
#  define max(x,y)  ((x)<(y)?(y):(x))
#endif

#if defined(__i386__) && defined(__GNUC__) && !defined(__BEOS__)
#  define VORBIS_FPU_CONTROL
/* both GCC and MSVC are kinda stupid about rounding/casting to int.
   Because of encapsulation constraints (GCC can't see inside the asm
   block and so we end up doing stupid things like a store/load that
   is collectively a noop), we do it this way */

/* we must set up the fpu before this works!! */

typedef ogg_int16_t vorbis_fpu_control;

static inline void vorbis_fpu_setround(vorbis_fpu_control *fpu){
  ogg_int16_t ret;
  ogg_int16_t temp;
  __asm__ __volatile__("fnstcw %0\n\t"
         "movw %0,%%dx\n\t"
         "orw $62463,%%dx\n\t"
         "movw %%dx,%1\n\t"
         "fldcw %1\n\t":"=m"(ret):"m"(temp): "dx");
  *fpu=ret;
}

static inline void vorbis_fpu_restore(vorbis_fpu_control fpu){
  __asm__ __volatile__("fldcw %0":: "m"(fpu));
}

/* assumes the FPU is in round mode! */
static inline int vorbis_ftoi(double f){  /* yes, double!  Otherwise,
                                             we get extra fst/fld to
                                             truncate precision */
  int i;
  __asm__("fistl %0": "=m"(i) : "t"(f));
  return(i);
}
#endif


#if defined(_WIN32) && !defined(__GNUC__)
#  define VORBIS_FPU_CONTROL

typedef ogg_int16_t vorbis_fpu_control;

static __inline int vorbis_ftoi(double f){
       int i;
       __asm{
        fld f
        fistp i
       }
       return i;
}

static __inline void vorbis_fpu_setround(vorbis_fpu_control *fpu){
}

static __inline void vorbis_fpu_restore(vorbis_fpu_control fpu){
}

#endif


#ifndef VORBIS_FPU_CONTROL

typedef int vorbis_fpu_control;

static int vorbis_ftoi(double f){
  return (int)(f+.5);
}

/* We don't have special code for this compiler/arch, so do it the slow way */
#  define vorbis_fpu_setround(vorbis_fpu_control) {}
#  define vorbis_fpu_restore(vorbis_fpu_control) {}

#endif

/* A 'chained bitstream' is a Vorbis bitstream that contains more than
   one logical bitstream arranged end to end (the only form of Ogg
   multiplexing allowed in a Vorbis bitstream; grouping [parallel
   multiplexing] is not allowed in Vorbis) */

/* A Vorbis file can be played beginning to end (streamed) without
   worrying ahead of time about chaining (see decoder_example.c).  If
   we have the whole file, however, and want random access
   (seeking/scrubbing) or desire to know the total length/time of a
   file, we need to account for the possibility of chaining. */

/* We can handle things a number of ways; we can determine the entire
   bitstream structure right off the bat, or find pieces on demand.
   This example determines and caches structure for the entire
   bitstream, but builds a virtual decoder on the fly when moving
   between links in the chain. */

/* There are also different ways to implement seeking.  Enough
   information exists in an Ogg bitstream to seek to
   sample-granularity positions in the output.  Or, one can seek by
   picking some portion of the stream roughly in the desired area if
   we only want course navigation through the stream. */

/*************************************************************************
 * Many, many internal helpers.  The intention is not to be confusing; 
 * rampant duplication and monolithic function implementation would be 
 * harder to understand anyway.  The high level functions are last.  Begin
 * grokking near the end of the file */

/* read a little more data from the file/pipe into the ogg_sync framer */
#define CHUNKSIZE 4096
static long _get_data(OggVorbis_File *vf){
  errno=0;
  if(vf->datasource){
    char *buffer=ogg_sync_buffer(&vf->oy,CHUNKSIZE);
  /*long bytes=(vf->callbacks.read_func)(buffer,1,CHUNKSIZE,vf->datasource);*/
    long bytes=Tcl_Read(vf->datasource,buffer,CHUNKSIZE);
    if(bytes>0)ogg_sync_wrote(&vf->oy,bytes);
    if(bytes==0 && errno)return(-1);
    return(bytes);
  }else
    return(0);
}

/* save a tiny smidge of verbosity to make the code more readable */
static void _seek_helper(OggVorbis_File *vf,long offset){
  if(vf->datasource){
    Tcl_Seek(vf->datasource, offset, SEEK_SET); 
    /*    (vf->callbacks.seek_func)(vf->datasource, offset, SEEK_SET);*/
    vf->offset=offset;
    ogg_sync_reset(&vf->oy);
  }else{
    /* shouldn't happen unless someone writes a broken callback */
    return;
  }
}

/* The read/seek functions track absolute position within the stream */

/* from the head of the stream, get the next page.  boundary specifies
   if the function is allowed to fetch more data from the stream (and
   how much) or only use internally buffered data.

   boundary: -1) unbounded search
              0) read no additional data; use cached only
	      n) search for a new page beginning for n bytes

   return:   <0) did not find a page (OV_FALSE, OV_EOF, OV_EREAD)
              n) found a page at absolute offset n */

static long _get_next_page(OggVorbis_File *vf,ogg_page *og,int boundary){
  if(boundary>0)boundary+=vf->offset;
  while(1){
    long more;

    if(boundary>0 && vf->offset>=boundary)return(OV_FALSE);
    more=ogg_sync_pageseek(&vf->oy,og);
    
    if(more<0){
      /* skipped n bytes */
      vf->offset-=more;
    }else{
      if(more==0){
	/* send more paramedics */
	if(!boundary)return(OV_FALSE);
	{
	  long ret=_get_data(vf);
	  if(ret==0)return(OV_EOF);
	  if(ret<0)return(OV_EREAD);
	}
      }else{
	/* got a page.  Return the offset at the page beginning,
           advance the internal offset past the page end */
	long ret=vf->offset;
	vf->offset+=more;
	return(ret);
	
      }
    }
  }
}

/* find the latest page beginning before the current stream cursor
   position. Much dirtier than the above as Ogg doesn't have any
   backward search linkage.  no 'readp' as it will certainly have to
   read. */
/* returns offset or OV_EREAD, OV_FAULT */
static long _get_prev_page(OggVorbis_File *vf,ogg_page *og){
  long begin=vf->offset;
  long ret;
  int offset=-1;

  while(offset==-1){
    begin-=CHUNKSIZE;
    _seek_helper(vf,begin);
    while(vf->offset<begin+CHUNKSIZE){
      ret=_get_next_page(vf,og,begin+CHUNKSIZE-vf->offset);
      if(ret==OV_EREAD)return(OV_EREAD);
      if(ret<0){
	break;
      }else{
	offset=ret;
      }
    }
  }

  /* we have the offset.  Actually snork and hold the page now */
  _seek_helper(vf,offset);
  ret=_get_next_page(vf,og,CHUNKSIZE);
  if(ret<0)
    /* this shouldn't be possible */
    return(OV_EFAULT);

  return(offset);
}

/* finds each bitstream link one at a time using a bisection search
   (has to begin by knowing the offset of the lb's initial page).
   Recurses for each link so it can alloc the link storage after
   finding them all, then unroll and fill the cache at the same time */
static int _bisect_forward_serialno(OggVorbis_File *vf,
				    long begin,
				    long searched,
				    long end,
				    long currentno,
				    long m){
  long endsearched=end;
  long next=end;
  ogg_page og;
  long ret;
  
  /* the below guards against garbage seperating the last and
     first pages of two links. */
  while(searched<endsearched){
    long bisect;
    
    if(endsearched-searched<CHUNKSIZE){
      bisect=searched;
    }else{
      bisect=(searched+endsearched)/2;
    }
    
    _seek_helper(vf,bisect);
    ret=_get_next_page(vf,&og,-1);
    if(ret==OV_EREAD)return(OV_EREAD);
    if(ret<0 || ogg_page_serialno(&og)!=currentno){
      endsearched=bisect;
      if(ret>=0)next=ret;
    }else{
      searched=ret+og.header_len+og.body_len;
    }
  }

  _seek_helper(vf,next);
  ret=_get_next_page(vf,&og,-1);
  if(ret==OV_EREAD)return(OV_EREAD);
  
  if(searched>=end || ret<0){
    vf->links=m+1;
    vf->offsets=_ogg_malloc((m+2)*sizeof(ogg_int64_t));
    vf->offsets[m+1]=searched;
  }else{
    ret=_bisect_forward_serialno(vf,next,vf->offset,
				 end,ogg_page_serialno(&og),m+1);
    if(ret==OV_EREAD)return(OV_EREAD);
  }
  
  vf->offsets[m]=begin;
  return(0);
}

/* uses the local ogg_stream storage in vf; this is important for
   non-streaming input sources */
static int _fetch_headers(OggVorbis_File *vf,vorbis_info *vi,vorbis_comment *vc,
			  long *serialno,ogg_page *og_ptr){
  ogg_page og;
  ogg_packet op;
  int i,ret=0;
  
  if(!og_ptr){
    ret=_get_next_page(vf,&og,CHUNKSIZE);
    if(ret==OV_EREAD)return(OV_EREAD);
    if(ret<0)return OV_ENOTVORBIS;
    og_ptr=&og;
  }

  if(serialno)*serialno=ogg_page_serialno(og_ptr);
  ogg_stream_init(&vf->os,ogg_page_serialno(og_ptr));
  
  /* extract the initial header from the first page and verify that the
     Ogg bitstream is in fact Vorbis data */
  
  vorbis_info_init(vi);
  vorbis_comment_init(vc);
  
  i=0;
  while(i<3){
    ogg_stream_pagein(&vf->os,og_ptr);
    while(i<3){
      int result=ogg_stream_packetout(&vf->os,&op);
      if(result==0)break;
      if(result==-1){
	ret=OV_EBADHEADER;
	goto bail_header;
      }
      if((ret=vorbis_synthesis_headerin(vi,vc,&op))){
	goto bail_header;
      }
      i++;
    }
    if(i<3)
      if(_get_next_page(vf,og_ptr,1)<0){
	ret=OV_EBADHEADER;
	goto bail_header;
      }
  }
  return 0; 

 bail_header:
  vorbis_info_clear(vi);
  vorbis_comment_clear(vc);
  ogg_stream_clear(&vf->os);
  return ret;
}

/* last step of the OggVorbis_File initialization; get all the
   vorbis_info structs and PCM positions.  Only called by the seekable
   initialization (local stream storage is hacked slightly; pay
   attention to how that's done) */

/* this is void and does not propogate errors up because we want to be
   able to open and use damaged bitstreams as well as we can.  Just
   watch out for missing information for links in the OggVorbis_File
   struct */
static void _prefetch_all_headers(OggVorbis_File *vf,vorbis_info *first_i,
				  vorbis_comment *first_c,
				  long dataoffset){
  ogg_page og;
  int i,ret;
  
  vf->vi=_ogg_calloc(vf->links,sizeof(vorbis_info));
  vf->vc=_ogg_calloc(vf->links,sizeof(vorbis_info));
  vf->dataoffsets=_ogg_malloc(vf->links*sizeof(ogg_int64_t));
  vf->pcmlengths=_ogg_malloc(vf->links*sizeof(ogg_int64_t));
  vf->serialnos=_ogg_malloc(vf->links*sizeof(long));
  
  for(i=0;i<vf->links;i++){
    if(first_i && first_c && i==0){
      /* we already grabbed the initial header earlier.  This just
         saves the waste of grabbing it again */
      memcpy(vf->vi+i,first_i,sizeof(vorbis_info));
      memcpy(vf->vc+i,first_c,sizeof(vorbis_comment));
      vf->dataoffsets[i]=dataoffset;
    }else{

      /* seek to the location of the initial header */

      _seek_helper(vf,vf->offsets[i]);
      if(_fetch_headers(vf,vf->vi+i,vf->vc+i,NULL,NULL)<0){
    	vf->dataoffsets[i]=-1;
      }else{
	vf->dataoffsets[i]=vf->offset;
        ogg_stream_clear(&vf->os);
      }
    }

    /* get the serial number and PCM length of this link. To do this,
       get the last page of the stream */
    {
      long end=vf->offsets[i+1];
      _seek_helper(vf,end);

      while(1){
	ret=_get_prev_page(vf,&og);
	if(ret<0){
	  /* this should not be possible, actually */
	  vorbis_info_clear(vf->vi+i);
	  vorbis_comment_clear(vf->vc+i);
	  break;
	}
	if(ogg_page_granulepos(&og)!=-1){
	  vf->serialnos[i]=ogg_page_serialno(&og);
	  vf->pcmlengths[i]=ogg_page_granulepos(&og);
	  break;
	}
      }
    }
  }
}

static void _make_decode_ready(OggVorbis_File *vf){
  if(vf->decode_ready)return;
  if(vf->seekable){
    vorbis_synthesis_init(&vf->vd,vf->vi+vf->current_link);
  }else{
    vorbis_synthesis_init(&vf->vd,vf->vi);
  }    
  vorbis_block_init(&vf->vd,&vf->vb);
  vf->decode_ready=1;
  return;
}

static int _open_seekable(OggVorbis_File *vf){
  vorbis_info initial_i;
  vorbis_comment initial_c;
  long serialno,end;
  int ret;
  long dataoffset;
  ogg_page og;
  
  /* is this even vorbis...? */
  ret=_fetch_headers(vf,&initial_i,&initial_c,&serialno,NULL);
  dataoffset=vf->offset;
  ogg_stream_clear(&vf->os);
  if(ret<0)return(ret);
  
  /* we can seek, so set out learning all about this file */
  vf->seekable=1;
  Tcl_Seek(vf->datasource, 0, SEEK_END); 
  /*  (vf->callbacks.seek_func)(vf->datasource,0,SEEK_END);
  vf->offset=vf->end=(vf->callbacks.tell_func)(vf->datasource);*/
  vf->offset=vf->end=Tcl_Tell(vf->datasource);

  /* We get the offset for the last page of the physical bitstream.
     Most OggVorbis files will contain a single logical bitstream */
  end=_get_prev_page(vf,&og);
  if(end<0){
    ogg_stream_clear(&vf->os);
    return(end);
  }

  /* more than one logical bitstream? */
  if(ogg_page_serialno(&og)!=serialno){

    /* Chained bitstream. Bisect-search each logical bitstream
       section.  Do so based on serial number only */
    if(_bisect_forward_serialno(vf,0,0,end+1,serialno,0)<0){
      ogg_stream_clear(&vf->os);
      return(OV_EREAD);
    }

  }else{

    /* Only one logical bitstream */
    if(_bisect_forward_serialno(vf,0,end,end+1,serialno,0)){
      ogg_stream_clear(&vf->os);
      return(OV_EREAD);
    }

  }

  _prefetch_all_headers(vf,&initial_i,&initial_c,dataoffset);
  return(ov_raw_seek(vf,0));

}

static int _open_nonseekable(OggVorbis_File *vf){
  int ret;
  /* we cannot seek. Set up a 'single' (current) logical bitstream entry  */
  vf->links=1;
  vf->vi=_ogg_calloc(vf->links,sizeof(vorbis_info));
  vf->vc=_ogg_calloc(vf->links,sizeof(vorbis_info));

  /* Try to fetch the headers, maintaining all the storage */
  if((ret=_fetch_headers(vf,vf->vi,vf->vc,&vf->current_serialno,NULL))<0)
    return(ret);
  _make_decode_ready(vf);

  return 0;
}

/* clear out the current logical bitstream decoder */ 
static void _decode_clear(OggVorbis_File *vf){
  ogg_stream_clear(&vf->os);
  vorbis_dsp_clear(&vf->vd);
  vorbis_block_clear(&vf->vb);
  vf->decode_ready=0;

  vf->bittrack=0.f;
  vf->samptrack=0.f;
}

/* fetch and process a packet.  Handles the case where we're at a
   bitstream boundary and dumps the decoding machine.  If the decoding
   machine is unloaded, it loads it.  It also keeps pcm_offset up to
   date (seek and read both use this.  seek uses a special hack with
   readp). 

   return: <0) error, OV_HOLE (lost packet) or OV_EOF
            0) need more data (only if readp==0)
	    1) got a packet 
*/

static int _process_packet(OggVorbis_File *vf,int readp){
  ogg_page og;

  /* handle one packet.  Try to fetch it from current stream state */
  /* extract packets from page */
  while(1){
    
    /* process a packet if we can.  If the machine isn't loaded,
       neither is a page */
    if(vf->decode_ready){
      ogg_packet op;
      int result=ogg_stream_packetout(&vf->os,&op);
      ogg_int64_t granulepos;
      
      if(result==-1)return(OV_HOLE); /* hole in the data. */
      if(result>0){
	/* got a packet.  process it */
	granulepos=op.granulepos;
	if(!vorbis_synthesis(&vf->vb,&op)){ /* lazy check for lazy
                                               header handling.  The
                                               header packets aren't
                                               audio, so if/when we
                                               submit them,
                                               vorbis_synthesis will
                                               reject them */

	  /* suck in the synthesis data and track bitrate */
	  {
	    int oldsamples=vorbis_synthesis_pcmout(&vf->vd,NULL);
	    vorbis_synthesis_blockin(&vf->vd,&vf->vb);
	    vf->samptrack+=vorbis_synthesis_pcmout(&vf->vd,NULL)-oldsamples;
	    vf->bittrack+=op.bytes*8;
	  }
	  
	  /* update the pcm offset. */
	  if(granulepos!=-1 && !op.e_o_s){
	    int link=(vf->seekable?vf->current_link:0);
	    int i,samples;
	    
	    /* this packet has a pcm_offset on it (the last packet
	       completed on a page carries the offset) After processing
	       (above), we know the pcm position of the *last* sample
	       ready to be returned. Find the offset of the *first*

	       As an aside, this trick is inaccurate if we begin
	       reading anew right at the last page; the end-of-stream
	       granulepos declares the last frame in the stream, and the
	       last packet of the last page may be a partial frame.
	       So, we need a previous granulepos from an in-sequence page
	       to have a reference point.  Thus the !op.e_o_s clause
	       above */
	    
	    samples=vorbis_synthesis_pcmout(&vf->vd,NULL);
	    
	    granulepos-=samples;
	    for(i=0;i<link;i++)
	      granulepos+=vf->pcmlengths[i];
	    vf->pcm_offset=granulepos;
	  }
	  return(1);
	}
      }
    }

    if(!readp)return(0);
    if(_get_next_page(vf,&og,-1)<0)return(OV_EOF); /* eof. leave unitialized */

    /* bitrate tracking; add the header's bytes here, the body bytes
       are done by packet above */
    vf->bittrack+=og.header_len*8;

    /* has our decoding just traversed a bitstream boundary? */
    if(vf->decode_ready){
      if(vf->current_serialno!=ogg_page_serialno(&og)){
	_decode_clear(vf);
      }
    }

    /* Do we need to load a new machine before submitting the page? */
    /* This is different in the seekable and non-seekable cases.  

       In the seekable case, we already have all the header
       information loaded and cached; we just initialize the machine
       with it and continue on our merry way.

       In the non-seekable (streaming) case, we'll only be at a
       boundary if we just left the previous logical bitstream and
       we're now nominally at the header of the next bitstream
    */

    if(!vf->decode_ready){
      int link;
      if(vf->seekable){
	vf->current_serialno=ogg_page_serialno(&og);
	
	/* match the serialno to bitstream section.  We use this rather than
	   offset positions to avoid problems near logical bitstream
	   boundaries */
	for(link=0;link<vf->links;link++)
	  if(vf->serialnos[link]==vf->current_serialno)break;
	if(link==vf->links)return(OV_EBADLINK); /* sign of a bogus
						   stream.  error out,
						   leave machine
						   uninitialized */
	
	vf->current_link=link;
	
	ogg_stream_init(&vf->os,vf->current_serialno);
	ogg_stream_reset(&vf->os); 
	
      }else{
	/* we're streaming */
	/* fetch the three header packets, build the info struct */
	
	_fetch_headers(vf,vf->vi,vf->vc,&vf->current_serialno,&og);
	vf->current_link++;
	link=0;
      }
      
      _make_decode_ready(vf);
    }
    ogg_stream_pagein(&vf->os,&og);
  }
}

/**********************************************************************
 * The helpers are over; it's all toplevel interface from here on out */
 
/* clear out the OggVorbis_File struct */
int ov_clear(Tcl_Interp *interp,OggVorbis_File *vf){
  if(vf){
    vorbis_block_clear(&vf->vb);
    vorbis_dsp_clear(&vf->vd);
    ogg_stream_clear(&vf->os);
    
    if(vf->vi && vf->links){
      int i;
      for(i=0;i<vf->links;i++){
	vorbis_info_clear(vf->vi+i);
	vorbis_comment_clear(vf->vc+i);
      }
      _ogg_free(vf->vi);
      _ogg_free(vf->vc);
    }
    if(vf->dataoffsets)_ogg_free(vf->dataoffsets);
    if(vf->pcmlengths)_ogg_free(vf->pcmlengths);
    if(vf->serialnos)_ogg_free(vf->serialnos);
    if(vf->offsets)_ogg_free(vf->offsets);
    ogg_sync_clear(&vf->oy);
    /*    if(vf->datasource)(vf->callbacks.close_func)(vf->datasource);*/
    if(vf->datasource)Tcl_Close(interp,vf->datasource);
    memset(vf,0,sizeof(OggVorbis_File)-4*sizeof(int));
  }
#ifdef DEBUG_LEAKS
  _VDBG_dump();
#endif
  return(0);
}

static int _fseek64_wrap(FILE *f,ogg_int64_t off,int whence){
  if(f==NULL)return(-1);
  return fseek(f,(int)off,whence);
}

/* inspects the OggVorbis file and finds/documents all the logical
   bitstreams contained in it.  Tries to be tolerant of logical
   bitstream sections that are truncated/woogie. 

   return: -1) error
            0) OK
*/

int ov_open(Tcl_Interp *interp,Tcl_Channel *f,OggVorbis_File *vf,
	    char *initial,long ibytes){
  ov_callbacks callbacks = {
    (size_t (*)(void *, size_t, size_t, void *))  fread,
    (int (*)(void *, ogg_int64_t, int))              _fseek64_wrap,
    (int (*)(void *))                             fclose,
    (long (*)(void *))                            ftell
  };

  return ov_open_callbacks(interp, f, vf, initial, ibytes, callbacks);
}
  

int ov_open_callbacks(Tcl_Interp *interp,Tcl_Channel *f,OggVorbis_File *vf,
		      char *initial,long ibytes, ov_callbacks callbacks)
{
  long offset=(f?Tcl_Seek(*f,0,SEEK_CUR):-1); 
  /*  long offset=(f?callbacks.seek_func(f,0,SEEK_CUR):-1);*/
  int ret;

  memset(vf,0,sizeof(OggVorbis_File)-4*sizeof(int));
  vf->datasource=*f;
  vf->callbacks = callbacks;

  /* init the framing state */
  ogg_sync_init(&vf->oy);

  /* perhaps some data was previously read into a buffer for testing
     against other stream types.  Allow initialization from this
     previously read data (as we may be reading from a non-seekable
     stream) */
  if(initial){
    char *buffer=ogg_sync_buffer(&vf->oy,ibytes);
    memcpy(buffer,initial,ibytes);
    ogg_sync_wrote(&vf->oy,ibytes);
  }

  /* can we seek? Stevens suggests the seek test was portable */
  if(offset!=-1){
    ret=_open_seekable(vf);
  }else{
    ret=_open_nonseekable(vf);
  }
  if(ret){
    vf->datasource=NULL;
    ov_clear(interp,vf);
  }
  return(ret);
}

/* How many logical bitstreams in this physical bitstream? */
long ov_streams(OggVorbis_File *vf){
  return vf->links;
}

/* Is the FILE * associated with vf seekable? */
long ov_seekable(OggVorbis_File *vf){
  return vf->seekable;
}

/* returns the bitrate for a given logical bitstream or the entire
   physical bitstream.  If the file is open for random access, it will
   find the *actual* average bitrate.  If the file is streaming, it
   returns the nominal bitrate (if set) else the average of the
   upper/lower bounds (if set) else -1 (unset).

   If you want the actual bitrate field settings, get them from the
   vorbis_info structs */

long ov_bitrate(OggVorbis_File *vf,int i){
  if(i>=vf->links)return(OV_EINVAL);
  if(!vf->seekable && i!=0)return(ov_bitrate(vf,0));
  if(i<0){
    ogg_int64_t bits=0;
    int i;
    for(i=0;i<vf->links;i++)
      bits+=(vf->offsets[i+1]-vf->dataoffsets[i])*8;
    return(rint(bits/ov_time_total(vf,-1)));
  }else{
    if(vf->seekable){
      /* return the actual bitrate */
      return(rint((vf->offsets[i+1]-vf->dataoffsets[i])*8/ov_time_total(vf,i)));
    }else{
      /* return nominal if set */
      if(vf->vi[i].bitrate_nominal>0){
	return vf->vi[i].bitrate_nominal;
      }else{
	if(vf->vi[i].bitrate_upper>0){
	  if(vf->vi[i].bitrate_lower>0){
	    return (vf->vi[i].bitrate_upper+vf->vi[i].bitrate_lower)/2;
	  }else{
	    return vf->vi[i].bitrate_upper;
	  }
	}
	return(OV_FALSE);
      }
    }
  }
}

/* returns the actual bitrate since last call.  returns -1 if no
   additional data to offer since last call (or at beginning of stream) */
long ov_bitrate_instant(OggVorbis_File *vf){
  int link=(vf->seekable?vf->current_link:0);
  long ret;
  if(vf->samptrack==0)return(OV_FALSE);
  ret=vf->bittrack/vf->samptrack*vf->vi[link].rate+.5;
  vf->bittrack=0.f;
  vf->samptrack=0.f;
  return(ret);
}

/* Guess */
long ov_serialnumber(OggVorbis_File *vf,int i){
  if(i>=vf->links)return(ov_serialnumber(vf,vf->links-1));
  if(!vf->seekable && i>=0)return(ov_serialnumber(vf,-1));
  if(i<0){
    return(vf->current_serialno);
  }else{
    return(vf->serialnos[i]);
  }
}

/* returns: total raw (compressed) length of content if i==-1
            raw (compressed) length of that logical bitstream for i==0 to n
	    -1 if the stream is not seekable (we can't know the length)
*/
ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i){
  if(!vf->seekable || i>=vf->links)return(OV_EINVAL);
  if(i<0){
    long acc=0;
    int i;
    for(i=0;i<vf->links;i++)
      acc+=ov_raw_total(vf,i);
    return(acc);
  }else{
    return(vf->offsets[i+1]-vf->offsets[i]);
  }
}

/* returns: total PCM length (samples) of content if i==-1
            PCM length (samples) of that logical bitstream for i==0 to n
	    -1 if the stream is not seekable (we can't know the length)
*/
ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i){
  if(!vf->seekable || i>=vf->links)return(OV_EINVAL);
  if(i<0){
    ogg_int64_t acc=0;
    int i;
    for(i=0;i<vf->links;i++)
      acc+=ov_pcm_total(vf,i);
    return(acc);
  }else{
    return(vf->pcmlengths[i]);
  }
}

/* returns: total seconds of content if i==-1
            seconds in that logical bitstream for i==0 to n
	    -1 if the stream is not seekable (we can't know the length)
*/
double ov_time_total(OggVorbis_File *vf,int i){
  if(!vf->seekable || i>=vf->links)return(OV_EINVAL);
  if(i<0){
    double acc=0;
    int i;
    for(i=0;i<vf->links;i++)
      acc+=ov_time_total(vf,i);
    return(acc);
  }else{
    return((float)(vf->pcmlengths[i])/vf->vi[i].rate);
  }
}

/* seek to an offset relative to the *compressed* data. This also
   immediately sucks in and decodes pages to update the PCM cursor. It
   will cross a logical bitstream boundary, but only if it can't get
   any packets out of the tail of the bitstream we seek to (so no
   surprises). 

   returns zero on success, nonzero on failure */

int ov_raw_seek(OggVorbis_File *vf,long pos){
  int flag=0;
  if(!vf->seekable)return(OV_ENOSEEK); /* don't dump machine if we can't seek */
  if(pos<0 || pos>vf->offsets[vf->links])return(OV_EINVAL);

  /* clear out decoding machine state */
  vf->pcm_offset=-1;
  _decode_clear(vf);
  
  /* seek */
  _seek_helper(vf,pos);

  /* we need to make sure the pcm_offset is set.  We use the
     _fetch_packet helper to process one packet with readp set, then
     call it until it returns '0' with readp not set (the last packet
     from a page has the 'granulepos' field set, and that's how the
     helper updates the offset */

  while(!flag){
    switch(_process_packet(vf,1)){
    case 0:case OV_EOF:
      /* oh, eof. There are no packets remaining.  Set the pcm offset to
	 the end of file */
      vf->pcm_offset=ov_pcm_total(vf,-1);
      return(0);
    case OV_HOLE:
      break;
    case OV_EBADLINK:
      goto seek_error;
    default:
      /* all OK */
      flag=1;
      break;
    }
  }
  
  while(1){
    /* don't have to check each time through for the updated granule;
       it's always the last complete packet on a page */
    switch(_process_packet(vf,0)){
    case 0:case OV_EOF:
      /* the offset is set unless it's a bogus bitstream with no
         offset information but that's not our fault.  We still run
         gracefully, we're just missing the offset */
      return(0);
    case OV_EBADLINK:
      goto seek_error;
    default:
      /* continue processing packets */
      break;
    }
  }
  
 seek_error:
  /* dump the machine so we're in a known state */
  vf->pcm_offset=-1;
  _decode_clear(vf);
  return OV_EBADLINK;
}

/* Page granularity seek (faster than sample granularity because we
   don't do the last bit of decode to find a specific sample).

   Seek to the last [granule marked] page preceeding the specified pos
   location, such that decoding past the returned point will quickly
   arrive at the requested position. */
int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos){
  int link=-1;
  long ret;
  ogg_int64_t total=ov_pcm_total(vf,-1);

  if(!vf->seekable)return(OV_ENOSEEK);
  if(pos<0 || pos>total)return(OV_EINVAL);

  /* which bitstream section does this pcm offset occur in? */
  for(link=vf->links-1;link>=0;link--){
    total-=vf->pcmlengths[link];
    if(pos>=total)break;
  }

  /* search within the logical bitstream for the page with the highest
     pcm_pos preceeding (or equal to) pos.  There is a danger here;
     missing pages or incorrect frame number information in the
     bitstream could make our task impossible.  Account for that (it
     would be an error condition) */
  {
    ogg_int64_t target=pos-total;
    long end=vf->offsets[link+1];
    long begin=vf->offsets[link];
    long best=begin;

    ogg_page og;
    while(begin<end){
      long bisect;
    
      if(end-begin<CHUNKSIZE){
	bisect=begin;
      }else{
	bisect=(end+begin)/2;
      }
    
      _seek_helper(vf,bisect);
      ret=_get_next_page(vf,&og,end-bisect);
      switch(ret){
      case OV_FALSE: case OV_EOF:
	end=bisect;
	break;
      case OV_EREAD:
	goto seek_error;
      default:
	{
	  ogg_int64_t granulepos=ogg_page_granulepos(&og);
	  if(granulepos<target){
	    best=ret;  /* raw offset of packet with granulepos */ 
	    begin=vf->offset; /* raw offset of next packet */
	  }else{
	    end=bisect;
	  }
	}
      }
    }

    /* found our page. seek to it (call raw_seek). */
    
    if((ret=ov_raw_seek(vf,best)))goto seek_error;
  }
  
  /* verify result */
  if(vf->pcm_offset>=pos || pos>ov_pcm_total(vf,-1)){
    ret=OV_EFAULT;
    goto seek_error;
  }
  return(0);
  
 seek_error:
  /* dump machine so we're in a known state */
  vf->pcm_offset=-1;
  _decode_clear(vf);
  return ret;
}

/* seek to a sample offset relative to the decompressed pcm stream 
   returns zero on success, nonzero on failure */

int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos){
  int ret=ov_pcm_seek_page(vf,pos);
  if(ret<0)return(ret);
  
  /* discard samples until we reach the desired position. Crossing a
     logical bitstream boundary with abandon is OK. */
  while(vf->pcm_offset<pos){
    float **pcm;
    long target=pos-vf->pcm_offset;
    long samples=vorbis_synthesis_pcmout(&vf->vd,&pcm);

    if(samples>target)samples=target;
    vorbis_synthesis_read(&vf->vd,samples);
    vf->pcm_offset+=samples;
    
    if(samples<target)
      if(_process_packet(vf,1)==0)
	vf->pcm_offset=ov_pcm_total(vf,-1); /* eof */
  }
  return 0;
}

/* seek to a playback time relative to the decompressed pcm stream 
   returns zero on success, nonzero on failure */
int ov_time_seek(OggVorbis_File *vf,double seconds){
  /* translate time to PCM position and call ov_pcm_seek */

  int link=-1;
  ogg_int64_t pcm_total=ov_pcm_total(vf,-1);
  double time_total=ov_time_total(vf,-1);

  if(!vf->seekable)return(OV_ENOSEEK);
  if(seconds<0 || seconds>time_total)return(OV_EINVAL);
  
  /* which bitstream section does this time offset occur in? */
  for(link=vf->links-1;link>=0;link--){
    pcm_total-=vf->pcmlengths[link];
    time_total-=ov_time_total(vf,link);
    if(seconds>=time_total)break;
  }

  /* enough information to convert time offset to pcm offset */
  {
    ogg_int64_t target=pcm_total+(seconds-time_total)*vf->vi[link].rate;
    return(ov_pcm_seek(vf,target));
  }
}

/* page-granularity version of ov_time_seek 
   returns zero on success, nonzero on failure */
int ov_time_seek_page(OggVorbis_File *vf,double seconds){
  /* translate time to PCM position and call ov_pcm_seek */

  int link=-1;
  ogg_int64_t pcm_total=ov_pcm_total(vf,-1);
  double time_total=ov_time_total(vf,-1);

  if(!vf->seekable)return(OV_ENOSEEK);
  if(seconds<0 || seconds>time_total)return(OV_EINVAL);
  
  /* which bitstream section does this time offset occur in? */
  for(link=vf->links-1;link>=0;link--){
    pcm_total-=vf->pcmlengths[link];
    time_total-=ov_time_total(vf,link);
    if(seconds>=time_total)break;
  }

  /* enough information to convert time offset to pcm offset */
  {
    ogg_int64_t target=pcm_total+(seconds-time_total)*vf->vi[link].rate;
    return(ov_pcm_seek_page(vf,target));
  }
}

/* tell the current stream offset cursor.  Note that seek followed by
   tell will likely not give the set offset due to caching */
ogg_int64_t ov_raw_tell(OggVorbis_File *vf){
  return(vf->offset);
}

/* return PCM offset (sample) of next PCM sample to be read */
ogg_int64_t ov_pcm_tell(OggVorbis_File *vf){
  return(vf->pcm_offset);
}

/* return time offset (seconds) of next PCM sample to be read */
double ov_time_tell(OggVorbis_File *vf){
  /* translate time to PCM position and call ov_pcm_seek */

  int link=-1;
  ogg_int64_t pcm_total=0;
  double time_total=0.f;
  
  if(vf->seekable){
    pcm_total=ov_pcm_total(vf,-1);
    time_total=ov_time_total(vf,-1);
  
    /* which bitstream section does this time offset occur in? */
    for(link=vf->links-1;link>=0;link--){
      pcm_total-=vf->pcmlengths[link];
      time_total-=ov_time_total(vf,link);
      if(vf->pcm_offset>=pcm_total)break;
    }
  }

  return((double)time_total+(double)(vf->pcm_offset-pcm_total)/vf->vi[link].rate);
}

/*  link:   -1) return the vorbis_info struct for the bitstream section
                currently being decoded
           0-n) to request information for a specific bitstream section
    
    In the case of a non-seekable bitstream, any call returns the
    current bitstream.  NULL in the case that the machine is not
    initialized */

vorbis_info *ov_info(OggVorbis_File *vf,int link){
  if(vf->seekable){
    if(link<0)
      if(vf->decode_ready)
	return vf->vi+vf->current_link;
      else
	return NULL;
    else
      if(link>=vf->links)
	return NULL;
      else
	return vf->vi+link;
  }else{
    if(vf->decode_ready)
      return vf->vi;
    else
      return NULL;
  }
}

/* grr, strong typing, grr, no templates/inheritence, grr */
vorbis_comment *ov_comment(OggVorbis_File *vf,int link){
  if(vf->seekable){
    if(link<0)
      if(vf->decode_ready)
	return vf->vc+vf->current_link;
      else
	return NULL;
    else
      if(link>=vf->links)
	return NULL;
      else
	return vf->vc+link;
  }else{
    if(vf->decode_ready)
      return vf->vc;
    else
      return NULL;
  }
}

int host_is_big_endian() {
  ogg_int32_t pattern = 0xfeedface; /* deadbeef */
  unsigned char *bytewise = (unsigned char *)&pattern;
  if (bytewise[0] == 0xfe) return 1;
  return 0;
}

/* up to this point, everything could more or less hide the multiple
   logical bitstream nature of chaining from the toplevel application
   if the toplevel application didn't particularly care.  However, at
   the point that we actually read audio back, the multiple-section
   nature must surface: Multiple bitstream sections do not necessarily
   have to have the same number of channels or sampling rate.

   ov_read returns the sequential logical bitstream number currently
   being decoded along with the PCM data in order that the toplevel
   application can take action on channel/sample rate changes.  This
   number will be incremented even for streamed (non-seekable) streams
   (for seekable streams, it represents the actual logical bitstream
   index within the physical bitstream.  Note that the accessor
   functions above are aware of this dichotomy).

   input values: buffer) a buffer to hold packed PCM data for return
		 length) the byte length requested to be placed into buffer
		 bigendianp) should the data be packed LSB first (0) or
		             MSB first (1)
		 word) word size for output.  currently 1 (byte) or 
		       2 (16 bit short)

   return values: <0) error/hole in data (OV_HOLE)
                   0) EOF
		   n) number of bytes of PCM actually returned.  The
		   below works on a packet-by-packet basis, so the
		   return length is not related to the 'length' passed
		   in, just guaranteed to fit.

	    *section) set to the logical bitstream number */

long ov_read(OggVorbis_File *vf,char *buffer,int length,
		    int bigendianp,int word,int sgned,int *bitstream){
  int i,j;
  int host_endian = host_is_big_endian();

  while(1){
    if(vf->decode_ready){
      float **pcm;
      long samples=vorbis_synthesis_pcmout(&vf->vd,&pcm);
      if(samples){
	/* yay! proceed to pack data into the byte buffer */

	long channels=ov_info(vf,-1)->channels;
	long bytespersample=word * channels;
	vorbis_fpu_control fpu;
	if(samples>length/bytespersample)samples=length/bytespersample;
	
	/* a tight loop to pack each size */
	{
	  int val;
	  if(word==1){
	    int off=(sgned?0:128);
	    vorbis_fpu_setround(&fpu);
	    for(j=0;j<samples;j++)
	      for(i=0;i<channels;i++){
		val=vorbis_ftoi(pcm[i][j]*128.f);
		if(val>127)val=127;
		else if(val<-128)val=-128;
		*buffer++=val+off;
	      }
	    vorbis_fpu_restore(fpu);
	  }else{
	    int off=(sgned?0:32768);

	    if(host_endian==bigendianp){
	      if(sgned){

		vorbis_fpu_setround(&fpu);
		for(i=0;i<channels;i++) { /* It's faster in this order */
		  float *src=pcm[i];
		  short *dest=((short *)buffer)+i;
		  for(j=0;j<samples;j++) {
		    val=vorbis_ftoi(src[j]*32768.f);
		    if(val>32767)val=32767;
		    else if(val<-32768)val=-32768;
		    *dest=val;
		    dest+=channels;
		  }
		}
		vorbis_fpu_restore(fpu);

	      }else{

		vorbis_fpu_setround(&fpu);
		for(i=0;i<channels;i++) {
		  float *src=pcm[i];
		  short *dest=((short *)buffer)+i;
		  for(j=0;j<samples;j++) {
		    val=vorbis_ftoi(src[j]*32768.f);
		    if(val>32767)val=32767;
		    else if(val<-32768)val=-32768;
		    *dest=val+off;
		    dest+=channels;
		  }
		}
		vorbis_fpu_restore(fpu);

	      }
	    }else if(bigendianp){

	      vorbis_fpu_setround(&fpu);
	      for(j=0;j<samples;j++)
		for(i=0;i<channels;i++){
		  val=vorbis_ftoi(pcm[i][j]*32768.f);
		  if(val>32767)val=32767;
		  else if(val<-32768)val=-32768;
		  val+=off;
		  *buffer++=(val>>8);
		  *buffer++=(val&0xff);
		}
	      vorbis_fpu_restore(fpu);

	    }else{
	      int val;
	      vorbis_fpu_setround(&fpu);
	      for(j=0;j<samples;j++)
	 	for(i=0;i<channels;i++){
		  val=vorbis_ftoi(pcm[i][j]*32768.f);
		  if(val>32767)val=32767;
		  else if(val<-32768)val=-32768;
		  val+=off;
		  *buffer++=(val&0xff);
		  *buffer++=(val>>8);
	  	}
	      vorbis_fpu_restore(fpu);  

	    }
	  }
	}
	
	vorbis_synthesis_read(&vf->vd,samples);
	vf->pcm_offset+=samples;
	if(bitstream)*bitstream=vf->current_link;
	return(samples*bytespersample);
      }
    }

    /* suck in another packet */
    switch(_process_packet(vf,1)){
    case 0:case OV_EOF:
      return(0);
    case OV_HOLE:
      return(OV_HOLE);
    case OV_EBADLINK:
      return(OV_EBADLINK);
    }
  }
}


/* end vorbisfile.c */


#define OGG_PATTERN "OggS"
#define OGG_STRING "OGG"

static char * 
GuessOggFile(char *buf, int len)
{
  if (len < (int) strlen(OGG_PATTERN)) return(QUE_STRING);
  if (strncasecmp(OGG_PATTERN, buf, strlen(OGG_PATTERN)) == 0) {
    return(OGG_STRING);
  }
  return(NULL);
}

char *
ExtOggFile(char *s)
{
  int l1 = strlen(".ogg");
  int l2 = strlen(s);

  if (strncasecmp(".ogg", &s[l2 - l1], l1) == 0) {
    return(OGG_STRING);
  }
  return(NULL);
}

static int started = 0;

#define READBUFSIZE 1024

static ogg_stream_state os; /* take physical pages, weld into a logical
	  		       stream of packets */
static ogg_page         og; /* one Ogg bitstream page. Vorbis packets are
			       inside */
static ogg_packet       op; /* one raw packet of data for decode */
  
static vorbis_info      vi; /* struct that stores all the static vorbis
			       bitstream settings */
static vorbis_comment   vc; /* struct that stores all the user comments */
  
static vorbis_dsp_state vd; /* central working state for the
			       packet->PCM decoder */
static vorbis_block     vb; /* local working space for packet->PCM decode */

#define SNACK_OGG_INT 19

static int
OpenOggFile(Sound *s, Tcl_Interp *interp, Tcl_Channel *ch, char *mode)
{
  if (s->debug > 2) Snack_WriteLog("    Enter OpenOggFile\n");

  if ((*ch = Tcl_OpenFileChannel(interp, s->fcname, mode, 420)) == 0) {
    return TCL_ERROR;
  }
  if (*ch == NULL) {
    Tcl_AppendResult(interp, "Ogg: unable to open file: ",
		     Snack_GetSoundFilename(s), NULL);
    return TCL_ERROR;
  } 
  Tcl_SetChannelOption(interp, *ch, "-translation", "binary");
#ifdef TCL_81_API
  Tcl_SetChannelOption(interp, *ch, "-encoding", "binary");
#endif
  
  if (s->extHead2 != NULL && s->extHead2Type != SNACK_OGG_INT) {
    Snack_FileFormat *ff;
    
    for (ff = Snack_GetFileFormats(); ff != NULL; ff = ff->nextPtr) {
      if (strcmp(s->fileType, ff->name) == 0) {
	if (ff->freeHeaderProc != NULL) {
	  (ff->freeHeaderProc)(s);
	}
      }
    }
  }
  
  if (s->extHead2 == NULL) {
    s->extHead2 = (char *) ckalloc(sizeof(OggVorbis_File));
    s->extHead2Type = SNACK_OGG_INT;
    ((OggVorbis_File *)s->extHead2)->nombitrate = 128000;
    ((OggVorbis_File *)s->extHead2)->maxbitrate = -1;
    ((OggVorbis_File *)s->extHead2)->minbitrate = -1;
    ((OggVorbis_File *)s->extHead2)->commList = NULL;
  }

  if (strcmp(mode,"r") == 0) {
    if(ov_open(interp, ch, (OggVorbis_File *)s->extHead2, NULL, 0) < 0) {
      Tcl_AppendResult(interp, "Input does not appear to be an Ogg bitstream",
		       NULL);
      return TCL_ERROR;
    }
  }

  if (s->debug > 2) Snack_WriteLog("    Exit OpenOggFile\n");
  
  return TCL_OK;
}

static int
CloseOggFile(Sound *s, Tcl_Interp *interp, Tcl_Channel *ch)
{
  if (s->debug > 2) Snack_WriteLog("    Enter CloseOggFile\n");

  if (started == 0) {
    ov_clear(interp, (OggVorbis_File *)s->extHead2);
    *ch = NULL;
  } else {

    /* Tell the library we're at end of stream */
    vorbis_analysis_wrote(&vd, 0);

    while (vorbis_analysis_blockout(&vd, &vb) == 1) {
      vorbis_analysis(&vb,&op);      
      ogg_stream_packetin(&os,&op);
      
      while (1) {
	int result = ogg_stream_pageout(&os, &og);
	if (result == 0) break;
	if (Tcl_Write(*ch, (char *) og.header, og.header_len) == -1)
	  return TCL_ERROR;
	if (Tcl_Write(*ch, (char *) og.body, og.body_len) == -1)
	  return TCL_ERROR;
	
	if (ogg_page_eos(&og)) break;
      }
    }

    /* clean up, vorbis_info_clear() must be called last */

    ogg_stream_clear(&os);
    vorbis_block_clear(&vb);
    vorbis_dsp_clear(&vd);
    vorbis_comment_clear(&vc);
    vorbis_info_clear(&vi);

    if (ch != NULL) {
      Tcl_Close(interp, *ch);
    }
    started = 0;
  }

  if (s->debug > 2) Snack_WriteLog("    Exit CloseOggFile\n");

  return TCL_OK;
}

float pcmout[READBUFSIZE];

static int
ReadOggSamples(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, char *ibuf,
		  float *obuf, int len)
{
  int nread = 0, bigendian = Snack_PlatformIsLittleEndian() ? 0 : 1;
  float *f  = obuf;
  int n, i, dummy;

  if (s->debug > 2) Snack_WriteLog("    Enter ReadOggSamples\n");

  while (nread < len) {
    int size = min(sizeof(pcmout), (len - nread) * s->sampsize);
    n = ov_read((OggVorbis_File *)s->extHead2, (char *)pcmout, size,
		bigendian, 2, 1, &dummy);
    if (n < 0) {
      return -1;
    } else if (n == 0) {
      return(nread);
    } else {
      short *r = (short *) pcmout;
      for (i = 0; i < n / s->sampsize; i++) {
	*f++ = (float) *r++;
      }
      nread += (n / s->sampsize);
    }
  }

  if (s->debug > 2) Snack_WriteLogInt("    Exit ReadOggSamples", nread);

  return(nread);
}

static int
SeekOggFile(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, int pos)
{
  if (pos == 0) return 0; /* ov_time_seek() does not like seeking to 0 */

  if (ov_pcm_seek((OggVorbis_File *)s->extHead2, (ogg_int64_t) pos)) {
    return(-1);
  } else {
    return(pos);
  }
}

static int
GetOggHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	     char *buf)
{
  int i;
  vorbis_info *vi;
  vorbis_comment *vc;

  if (s->debug > 2) Snack_WriteLog("    Enter GetOggHeader\n"); 

  /* For the case when Tcl_Open has been done somewhere else */

  if (s->extHead2 != NULL && s->extHead2Type != SNACK_OGG_INT) {
    Snack_FileFormat *ff;
    
    for (ff = Snack_GetFileFormats(); ff != NULL; ff = ff->nextPtr) {
      if (strcmp(s->fileType, ff->name) == 0) {
	if (ff->freeHeaderProc != NULL) {
	  (ff->freeHeaderProc)(s);
	}
      }
    }
  }

  if (s->extHead2 == NULL) {
    s->extHead2 = (char *) ckalloc(sizeof(OggVorbis_File));
    s->extHead2Type = SNACK_OGG_INT;
    ((OggVorbis_File *)s->extHead2)->maxbitrate = -1;
    ((OggVorbis_File *)s->extHead2)->minbitrate = -1;

    if (ov_open(interp, &s->rwchan, (OggVorbis_File *)s->extHead2, 
		(char *)s->tmpbuf, s->firstNRead) < 0) {
      Tcl_AppendResult(interp, "Input does not appear to be an Ogg bitstream",
		       NULL);
      return TCL_ERROR;
    }
  }

  vi = ov_info((OggVorbis_File *)s->extHead2,-1);
    
  Snack_SetSampleRate(s, vi->rate);
  Snack_SetNumChannels(s, vi->channels);
  Snack_SetSampleEncoding(s, LIN16);
  Snack_SetBytesPerSample(s, 2);
  Snack_SetHeaderSize(s, 0);
  Snack_SetLength(s, (long)ov_pcm_total((OggVorbis_File *)s->extHead2, -1));
  ((OggVorbis_File *)s->extHead2)->nombitrate =
    ov_bitrate((OggVorbis_File *)s->extHead2, -1);
  vc = ov_comment((OggVorbis_File *)s->extHead2, -1);

  ((OggVorbis_File *)s->extHead2)->commList = Tcl_NewListObj(0, NULL);
  for (i = 0; i < vc->comments; i++) {
    Tcl_ListObjAppendElement(interp, ((OggVorbis_File *)s->extHead2)->commList,
			     Tcl_NewStringObj(vc->user_comments[i], -1));
  }

  if (s->debug > 2) Snack_WriteLog("    Exit GetOggHeader\n");

  return TCL_OK;
}

static int
PutOggHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	     int objc, Tcl_Obj *CONST objv[], int len)
{
  int arg, n = 0;
  OggVorbis_File *of = (OggVorbis_File *)s->extHead2;
  Tcl_Obj **listObj;
  static char *subOptionStrings[] = {
    "-comment", "-maxbitrate", "-minbitrate", "-nominalbitrate", NULL
  };
  enum subOptions {
    COMMENT, MAX, MIN, NOMINAL
  };

  if (s->debug > 2) Snack_WriteLog("    Enter PutOggHeader\n"); 

  for (arg = 0; arg < objc; arg+=2) {
    int index;

    if (Tcl_GetIndexFromObj(interp, objv[arg], subOptionStrings,
			    "option", 0, &index) != TCL_OK) {
      return TCL_ERROR;
    }

    if (arg + 1 == objc) {
      Tcl_AppendResult(interp, "No argument given for ",
		       subOptionStrings[index], " option", (char *) NULL);
      return TCL_ERROR;
    }
    
    switch ((enum subOptions) index) {
    case COMMENT:
      {
	if (Tcl_ListObjGetElements(interp, objv[arg+1], &n, &listObj) !=
	    TCL_OK) {
	  return TCL_ERROR;
	}
	break;
      }
    case MAX:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &of->maxbitrate) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    case MIN:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &of->minbitrate) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    case NOMINAL:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &of->nombitrate) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    }
  }

  /* For the case when Tcl_Open has been done somewhere else */

  if (started == 0) {
    ogg_packet header;
    ogg_packet header_comm;
    ogg_packet header_code;

    if (s->extHead2 != NULL && s->extHead2Type != SNACK_OGG_INT) {
      Snack_FileFormat *ff;
      
      for (ff = Snack_GetFileFormats(); ff != NULL; ff = ff->nextPtr) {
	if (strcmp(s->fileType, ff->name) == 0) {
	  if (ff->freeHeaderProc != NULL) {
	    (ff->freeHeaderProc)(s);
	  }
	}
      }
    }

    if (s->extHead2 == NULL) {
      s->extHead2 = (char *) ckalloc(sizeof(OggVorbis_File));
      s->extHead2Type = SNACK_OGG_INT;
      ((OggVorbis_File *)s->extHead2)->nombitrate = 128000;
      ((OggVorbis_File *)s->extHead2)->maxbitrate = -1;
      ((OggVorbis_File *)s->extHead2)->minbitrate = -1;
      ((OggVorbis_File *)s->extHead2)->commList = NULL;
      of = (OggVorbis_File *)s->extHead2;
    }

    started = 1;
    vorbis_info_init(&vi);
    vorbis_encode_init(&vi, s->nchannels, s->samprate, of->maxbitrate,
		       of->nombitrate, of->minbitrate);

    if (of->commList != NULL && n == 0) {
      Tcl_ListObjGetElements(interp, of->commList, &n, &listObj);
    }

    if (n > 0) {
      int i;
      
      vorbis_comment_init(&vc);      
      for (i = 0; i < n; i++) {
	vorbis_comment_add(&vc, Tcl_GetStringFromObj(listObj[i], NULL));
      }
    }

    vorbis_analysis_init(&vd, &vi);
    vorbis_block_init(&vd, &vb);

    srand(time(NULL));
    ogg_stream_init(&os, rand());
    
    vorbis_analysis_headerout(&vd, &vc, &header, &header_comm, &header_code);
    ogg_stream_packetin(&os, &header);				 
    ogg_stream_packetin(&os, &header_comm);
    ogg_stream_packetin(&os, &header_code);
    
    
    if (ogg_stream_flush(&os, &og) != 0) {
      if (Tcl_Write(ch, (char *) og.header, og.header_len) == -1)
	return TCL_ERROR;
      if (Tcl_Write(ch, (char *) og.body, og.body_len) == -1)
	return TCL_ERROR;
    }
  }
  s->headSize = 0;
  
  if (s->debug > 2) Snack_WriteLog("    Exit PutOggHeader\n"); 

  return TCL_OK;
}

static int
WriteOggSamples(Sound *s, Tcl_Channel ch, Tcl_Obj *obj, int start, int length)
{
  int eos = 0, pos = start, end = start + length;
  long i, j, k;

  if (s->debug > 2) Snack_WriteLogInt("    Enter WriteOggSamples", length);
  
  while (pos < end) {
    float **buffer = vorbis_analysis_buffer(&vd, READBUFSIZE);
    
    /* uninterleave samples */
    Snack_GetSoundData(s, pos, pcmout, READBUFSIZE);
    for (i = 0, k = 0; i < READBUFSIZE / s->nchannels; i++) {
      for (j = 0; j < s->nchannels; j++, k++) {	
	if (s->readStatus == READ) {
	  buffer[j][i] = FSAMPLE(s, pos) / 32768.0f;
	} else {
	  buffer[j][i] = pcmout[k] / 32768.0f;
	}
	pos++;
	if (pos > end && j == s->nchannels-1) break;
      }
      if (pos > end && j == s->nchannels-1) break;
    }
    
    /* tell the library how much we actually submitted */
    vorbis_analysis_wrote(&vd, i);
  }
  
  while(vorbis_analysis_blockout(&vd, &vb)==1){
    vorbis_analysis(&vb,&op);
    ogg_stream_packetin(&os,&op);
    
    while(!eos){
      int result = ogg_stream_pageout(&os, &og);
      if (result == 0) break;
      if (Tcl_Write(ch, (char *) og.header, og.header_len) == -1)
	return TCL_ERROR;
      if (Tcl_Write(ch, (char *) og.body, og.body_len) == -1)
	return TCL_ERROR;
      
      if (ogg_page_eos(&og)) eos=1;
    }
  }

  if (s->debug > 2) Snack_WriteLog("    Exit WriteOggSamples\n");

  return(length);
}

void
FreeOggHeader(Sound *s)
{
  if (s->debug > 2) Snack_WriteLog("    Enter FreeOggHeader\n");

  if (s->extHead2 != NULL) {
    /* To be cleared commList */
    ckfree((char *)s->extHead2);
    s->extHead2 = NULL;
    s->extHead2Type = 0;
  }

  if (s->debug > 2) Snack_WriteLog("    Exit FreeOggHeader\n");
}

int
ConfigOgg(Sound *s, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
{
  int arg, index;
  OggVorbis_File *of = (OggVorbis_File *)s->extHead2;
  static char *optionStrings[] = {
    "-comment", "-maxbitrate", "-minbitrate", "-nominalbitrate", NULL
  };
  enum options {
    COMMENT, MAX, MIN, NOMINAL
  };
  
  if (s->debug > 2) Snack_WriteLog("    Enter ConfigOgg\n");
  
  if (s->extHead2 != NULL && s->extHeadType != SNACK_OGG_INT) {
    Snack_FileFormat *ff;
    
    for (ff = Snack_GetFileFormats(); ff != NULL; ff = ff->nextPtr) {
      if (strcmp(s->fileType, ff->name) == 0) {
	if (ff->freeHeaderProc != NULL) {
	  (ff->freeHeaderProc)(s);
	}
      }
    }
  }
  
  if (s->extHead2 == NULL) {
    s->extHead2 = (char *) ckalloc(sizeof(OggVorbis_File));
    s->extHeadType = SNACK_OGG_INT;
    ((OggVorbis_File *)s->extHead2)->nombitrate = 128000;
    ((OggVorbis_File *)s->extHead2)->maxbitrate = -1;
    ((OggVorbis_File *)s->extHead2)->minbitrate = -1;
    ((OggVorbis_File *)s->extHead2)->commList = NULL;
    of = (OggVorbis_File *)s->extHead2;
  }
  
  if (objc < 3) return 0;


  if (objc == 3) { /* get option */
    if (Tcl_GetIndexFromObj(interp, objv[2], optionStrings, "option", 0,
			    &index) != TCL_OK) {
      Tcl_AppendResult(interp, ", or\n", NULL);
      return 0;
    }

    switch ((enum options) index) {
    case COMMENT:
      {
	Tcl_SetObjResult(interp, of->commList);
	break;
      }
    case MAX:
      {
	Tcl_SetObjResult(interp, Tcl_NewIntObj(of->maxbitrate));
	break;
      }
    case MIN:
      {
	Tcl_SetObjResult(interp, Tcl_NewIntObj(of->minbitrate));
	break;
      }
    case NOMINAL:
      {
	Tcl_SetObjResult(interp, Tcl_NewIntObj(of->nombitrate));
	break;
      }
    }
  } else {
    for (arg = 2; arg < objc; arg+=2) {
      int index;
      
      if (Tcl_GetIndexFromObj(interp, objv[arg], optionStrings, "option", 0,
			      &index) != TCL_OK) {
	return TCL_ERROR;
      }
      
      if (arg + 1 == objc) {
	Tcl_AppendResult(interp, "No argument given for ",
			 optionStrings[index], " option\n", (char *) NULL);
	return 0;
      }
      
      switch ((enum options) index) {
      case COMMENT:
	{
	  int i, n;
	  Tcl_Obj **listObj;
	  
	  if (Tcl_ListObjGetElements(interp, objv[arg+1], &n, &listObj) !=
	      TCL_OK) {
	    return TCL_ERROR;
	  }
	  /* To be cleared commList */
	  of->commList = Tcl_NewListObj(0, NULL);
	  for (i = 0; i < n; i++) {
	    Tcl_ListObjAppendElement(interp, of->commList, listObj[i]);
	  }
	  break;
	}
      case MAX:
	{
	  if (Tcl_GetIntFromObj(interp,objv[arg+1], &of->maxbitrate) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
      case MIN:
	{
	  if (Tcl_GetIntFromObj(interp,objv[arg+1], &of->minbitrate) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
      case NOMINAL:
	{
	  if (Tcl_GetIntFromObj(interp,objv[arg+1], &of->nombitrate) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
      }
    }
  }

  if (s->debug > 2) Snack_WriteLog("    Exit ConfigOgg\n");

  return 1;
}

#define OGGFILE_VERSION "1.2"

Snack_FileFormat snackOggFormat = {
  OGG_STRING,
  GuessOggFile,
  GetOggHeader,
  ExtOggFile,
  PutOggHeader,
  OpenOggFile,
  CloseOggFile,
  ReadOggSamples,
  WriteOggSamples,
  SeekOggFile,
  FreeOggHeader,
  ConfigOgg,
  (Snack_FileFormat *) NULL
};

/* Called by "load libsnackogg" */
EXPORT(int, Snackogg_Init) _ANSI_ARGS_((Tcl_Interp *interp))
{
  int res;
  
#ifdef USE_TCL_STUBS
  if (Tcl_InitStubs(interp, "8", 0) == NULL) {
    return TCL_ERROR;
  }
#endif
  
#ifdef USE_SNACK_STUBS
  if (Snack_InitStubs(interp, "2", 0) == NULL) {
    return TCL_ERROR;
  }
#endif
  
  res = Tcl_PkgProvide(interp, "snackogg", OGGFILE_VERSION);
  
  if (res != TCL_OK) return res;

  Tcl_SetVar(interp, "snack::snackogg", OGGFILE_VERSION, TCL_GLOBAL_ONLY);

  Snack_CreateFileFormat(&snackOggFormat);

  return TCL_OK;
}

EXPORT(int, Snackogg_SafeInit)(Tcl_Interp *interp)
{
  return Snackogg_Init(interp);
}

Changes to snack/generic/SphereFile.c.

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+







   if (ch) sp_close((SP_FILE *)ch); \
   return TCL_ERROR; \
}

#define NIST_STRING "NIST"
#define SPHERE_STRING "SPHERE"
#define SPHERE_HEADERSIZE 1024
#define SNACK_SPHERE_INT 17

static int
GetSphereHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	      char *buf);

static char * 
GuessSphereFile(char *buf, int len)
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+







  }
  /*
    Hack for the pculaw format. Read header again because
    sp_set_data_mode() has to be called.
    */
  GetSphereHeader(s, interp, *ch, NULL, NULL);

  if (s->extHead != NULL && s->extHeadType != SNACK_SPHERE_INT) {
    Snack_FileFormat *ff;
    
    for (ff = Snack_GetFileFormats(); ff != NULL; ff = ff->nextPtr) {
      if (strcmp(s->fileType, ff->name) == 0) {
	if (ff->freeHeaderProc != NULL) {
	  (ff->freeHeaderProc)(s);
	}
      }
    }
  }
  
  if (s->extHead == NULL) {
    s->extHead = ckalloc(sizeof(short) * SPHERE_BUFFER_SIZE);
    s->extHeadType = SNACK_SPHERE_INT;
  }

  return TCL_OK;
}

static int
CloseSphereFile(Sound *s, Tcl_Interp *interp, Tcl_Channel *ch)
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  short *r  = (short *) s->extHead;
  int   *is = (int *)   s->extHead;
  float *fs = (float *) s->extHead;
  float *f  = obuf;
  int size = min(tot, SPHERE_BUFFER_SIZE / Snack_GetNumChannels(s));
  int read = sp_read_data(s->extHead, size, (SP_FILE *)ch);

  if (sp_error((SP_FILE *)ch)) {
  if (!(sp_error((SP_FILE *)ch) == 0 || sp_error((SP_FILE *)ch) == 101)) {
    return -1;
  }
  
  for (i = 0; i < read * Snack_GetNumChannels(s); i++) {
    switch (s->encoding) {
    case LIN16:
      if (s->swap) *r = Snack_SwapShort(*r);
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      if (Snack_GetBytesPerSample(s) == 2) {
         Snack_SetSampleEncoding(s, LIN16);
      } else {
         Snack_SetSampleEncoding(s, LIN8);
      }
   }
   if (sample_coding != "") {
      free(sample_coding);
     free(sample_coding);
   }

   /* header size shouldn't be needed by user,
      so it is not given directly by SPHERE user interface */

   Snack_SetHeaderSize(s, SPHERE_HEADERSIZE);
   Snack_SetLength(s, sample_cnt);

   return TCL_OK;
}

void
FreeSphereHeader(Sound *s)
{
  if (s->extHead != NULL) {
    ckfree((char *) s->extHead);
    s->extHead = NULL;
    s->extHeadType = 0;
  }
}

#define SPHEREFILE_VERSION "1.1"
#define SPHEREFILE_VERSION "1.2"

Snack_FileFormat snackSphFormat = {
  SPHERE_STRING,
  GuessSphereFile,
  GetSphereHeader,
  ExtSphereFile,
  NULL,
  OpenSphereFile,
  CloseSphereFile,
  ReadSphereSamples,
  NULL,
  SeekSphereFile,
  FreeSphereHeader,
  NULL,
  (Snack_FileFormat *) NULL
};

/* Called by "load libsnacksphere" */
EXPORT(int, Snacksphere_Init) _ANSI_ARGS_((Tcl_Interp *interp))
{
  int res;

Changes to snack/generic/ffa.c.

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static int sint_init = 0;
static int n2pow,nthpo;
static double theta, wpr, wpi;

#define  SNACK_PI2  6.283185307179586
#define  P7   0.707106781186548
#define  LN2  0.6931471805599453
#define  DB   4.34294481903251830000000
#define  DB   4.34294481903251830000000 /*  = 10 / ln(10)  */
#define  WMIN 1.0
#define  CORRN (float) 138.308998699
#define  CORR0 (float) 132.288396199

int
Snack_InitFFT(int n)
{

Changes to snack/generic/jkAudIO.h.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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extern int  SnackAudioReadable(ADesc *A);
extern int  SnackAudioPlayed(ADesc *A);
extern int  SnackAudioWriteable(ADesc *A);

extern int SnackAudioGetEncodings(char *device);
extern void SnackAudioGetRates(char *device, char *buf, int n);
extern int SnackAudioMaxNumberChannels(char *device);
extern int SnackAudioMinNumberChannels(char *device);

extern void ASetRecGain(int gain);
extern void ASetPlayGain(int gain);
extern int  AGetRecGain();
extern int  AGetPlayGain();

extern void SnackMixerGetInputJackLabels(char *buf, int n);

Changes to snack/generic/jkAudio.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or

Changes to snack/generic/jkCanvItems.h.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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#define CONF_WIDTH 1
#define CONF_PPS 2
#define CONF_WIDTH_PPS 3

extern int  CheckFFTlen(Tcl_Interp *interp, int fftlen);

extern int  CheckWinlen(Tcl_Interp *interp, int winlen);
extern int  CheckWinlen(Tcl_Interp *interp, int winlen, int fftlen);

extern int  CheckLPCorder(Tcl_Interp *interp, int lpcorder);

#if !defined(WIN) && !defined(MAC)
#define TkPutImage(colors, ncolors, display, pixels, gc, image, \
		   destx, desty, srcx, srcy, width, height) \
        XPutImage(                  display, pixels, gc, image, \
		   destx, desty, srcx, srcy, width, height);
#endif

#if defined WIN || defined MAC
#  define XFree(data) {if ((data) != NULL) ckfree((char *) (data));}
#endif

#if defined MAC
#include <tclMacMath.h>
#  include <tclMacMath.h>
#  define hypot hypotd

  extern double hypot(double x, double y);
#endif

#define OptSpecified(option) (configSpecs[option].specFlags & TK_CONFIG_OPTION_SPECIFIED)

#ifdef __cplusplus
}
#endif

Changes to snack/generic/jkCanvSect.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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#include "tk.h"
#include "jkSound.h"
#include "jkCanvItems.h"
#include <string.h>

#define SNACK_DEFAULT_SECTWINTYPE      SNACK_WIN_HAMMING
#define SNACK_DEFAULT_SECTWINTYPE_NAME "hamming"

#define SNACK_DEFAULT_LPC_ORDER        "20"

/*
 * Section item structure
 */

typedef struct SectionItem  {

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  XPoint fpts[5];
  char *channelstr;
  int debug;
  double topFrequency;
  double maxValue;
  double minValue;
  char *windowTypeStr;
  char *analysisTypeStr;
  int type;
  int lpcOrder;
  Tcl_Interp *interp;
  double preemph;

} SectionItem;

Tk_CustomOption sectTagsOption = { (Tk_OptionParseProc *) NULL,
				   (Tk_OptionPrintProc *) NULL,
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  OPTION_STIPPLE,
  OPTION_FRAME,
  OPTION_TOPFREQUENCY,
  OPTION_CHANNEL,
  OPTION_MAXVAL,
  OPTION_MINVAL,
  OPTION_SKIP,
  OPTION_WINTYPE
  OPTION_WINTYPE,
  OPTION_ANALYSISTYPE,
  OPTION_LPCORDER
} ConfigSpec;

static Tk_ConfigSpec configSpecs[] = {

  {TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL,
   "nw", Tk_Offset(SectionItem, anchor), TK_CONFIG_DONT_SET_DEFAULT},

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   "-80.0", Tk_Offset(SectionItem, minValue), 0},

  {TK_CONFIG_INT, "-skip", (char *) NULL, (char *) NULL,
   "-1", Tk_Offset(SectionItem, si.skip), 0},

  {TK_CONFIG_STRING, "-windowtype", (char *) NULL, (char *) NULL,
   SNACK_DEFAULT_SECTWINTYPE_NAME, Tk_Offset(SectionItem, windowTypeStr), 0},

  {TK_CONFIG_STRING, "-analysistype", (char *) NULL, (char *) NULL,
   "fft", Tk_Offset(SectionItem, analysisTypeStr), 0},

  {TK_CONFIG_INT, "-lpcorder", (char *) NULL, (char *) NULL,
   SNACK_DEFAULT_LPC_ORDER, Tk_Offset(SectionItem, lpcOrder), 0},

  {TK_CONFIG_INT, "-debug", (char *) NULL, (char *) NULL,
   "0", Tk_Offset(SectionItem, debug), 0},

  {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
   (char *) NULL, 0, 0}

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  sectPtr->soundName = NULL;
  sectPtr->sound = NULL;
  sectPtr->si.samprate = 16000;
  sectPtr->si.BufPos = 0;
  sectPtr->si.fftlen = 512;
  sectPtr->si.winlen = 256;
  sectPtr->preemph = 0.0;
  sectPtr->si.fftmax = -10000;
  sectPtr->si.fftmin = 10000;
  sectPtr->si.hamwin = (float *) ckalloc(NMAX * sizeof(float));
  sectPtr->si.abmax = 0.0f;
  sectPtr->xfft = (float *)  ckalloc(NMAX * sizeof(float));
  sectPtr->ffts = (double *) ckalloc(NMAX / 2 * sizeof(double));
  sectPtr->height = 256;
  sectPtr->width = 256;
  sectPtr->startSmp = 0;
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  sectPtr->maxValue = 0.0;
  sectPtr->minValue = -80.0;
  sectPtr->si.validStart = 0;
  sectPtr->si.skip = -1;
  sectPtr->si.windowType = SNACK_DEFAULT_SECTWINTYPE;
  sectPtr->si.windowTypeSet = SNACK_DEFAULT_SECTWINTYPE;
  sectPtr->windowTypeStr = NULL;
  sectPtr->analysisTypeStr = NULL;
  sectPtr->type = 0;
  sectPtr->lpcOrder = atoi(SNACK_DEFAULT_LPC_ORDER);
  sectPtr->interp = interp;

  if (sectPtr->si.hamwin == NULL) {
    Tcl_AppendResult(interp, "Couldn't allocate analysis window buffer!",NULL);
    return TCL_ERROR;
  }

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  ComputeSectionBbox(sectPtr->canvas, sectPtr);

  if (sectPtr->debug) Snack_WriteLog("Exit ComputeSectionCoords\n"); 

  return TCL_OK;
}

void
GetFloatMonoSigSect(SnackItemInfo *siPtr,SnackLinkedFileInfo *info,
		    float *sig,int beg, int len) {
  /* sig buffer must be allocated, file must be open! */

  int i;

  if (siPtr->storeType == SOUND_IN_MEMORY) {
    if (siPtr->nchannels == 1 || siPtr->channel != -1) {
      int p = beg * siPtr->nchannels + siPtr->channel;

      for (i = 0; i < len; i++) {
	sig[i] = (float) (FSAMPLE(siPtr, p));
	p += siPtr->nchannels;
      }
    } else {
      int c;

      for (i = 0; i < len; i++) {
	sig[i] = 0.0;
      }
      for (c = 0; c < siPtr->nchannels; c++) {
	int p = beg * siPtr->nchannels + c;

	for (i = 0; i < len; i++) {
	  sig[i] += (float) (FSAMPLE(siPtr, p));
	  p += siPtr->nchannels;
	}
      }
      for (i = 0; i < len; i++) {
	sig[i] /= siPtr->nchannels;
      }
    }
  } else { /* storeType != SOUND_IN_MEMORY */
    if (siPtr->nchannels == 1 || siPtr->channel != -1) {
      int p = beg * siPtr->nchannels + siPtr->channel;
	
      for (i = 0; i < len; i++) {
	sig[i] = (float) (GetSample(info, p));
	p += siPtr->nchannels;
      }
    } else {
      int c;
	
      for (i = 0; i < len; i++) {
	sig[i] = 0.0;
      }
      for (c = 0; c < siPtr->nchannels; c++) {
	int p = beg * siPtr->nchannels + c;
	  
	for (i = 0; i < len; i++) {
	  sig[i] += (float) (GetSample(info, p));
	  p += siPtr->nchannels;
	}
      }
      for (i = 0; i < len; i++) {
	sig[i] /= siPtr->nchannels;
      }
    }
  }
}

void
ComputeSection(Tk_Item *itemPtr)
{
  SectionItem *sectPtr = (SectionItem *) itemPtr;
  SnackItemInfo *siPtr = &sectPtr->si;
  int i, j;
  int fftlen     = siPtr->fftlen;
  int winlen     = siPtr->winlen;
  float preemph  = siPtr->preemph;
  int RestartPos = siPtr->RestartPos - siPtr->validStart;
  int storeType  = siPtr->storeType;
  int n, skip = siPtr->skip;
  double Max = -1000.0, Min = 1000.0;
  SnackLinkedFileInfo info;
  float *sig_lpc;
  float presample = 0.0;
  int siglen;
  float g_lpc;

  
  if (sectPtr->debug) Snack_WriteLogInt("Enter ComputeSection", sectPtr->ssmp);

  if (skip < 1) {
    skip = fftlen;
  }
  n = (sectPtr->esmp - siPtr->RestartPos) / skip;
  siglen = sectPtr->esmp - siPtr->RestartPos;
  n = siglen / skip;

  for (i = 0; i < fftlen/2; i++) {
    sectPtr->ffts[i] = 0.0;
  }

  if (n == 0) return;

  Snack_InitFFT(siPtr->fftlen);
  Snack_InitFFT(fftlen);
  Snack_InitWindow(siPtr->hamwin, winlen, fftlen, siPtr->windowType);

  if (storeType != SOUND_IN_MEMORY) {
    if (OpenLinkedFile(sectPtr->sound, &info) != TCL_OK) {
      return;
    }
  }

  if (sectPtr->type != 0 && n > 0) { /* LPC + FFT */

    sig_lpc = (float *) ckalloc(siglen * sizeof(float));

    GetFloatMonoSigSect(siPtr,&info,sig_lpc,RestartPos,siglen);
    if (RestartPos > 0)
	GetFloatMonoSigSect(siPtr,&info,&presample,RestartPos-1,1);
    PreEmphase(sig_lpc,presample,siglen,preemph);

    /* windowing signal to make lpc look more like the fft spectrum ??? */
    for (i = 0; i < winlen/2; i++) {
      sig_lpc[i] = sig_lpc[i] * siPtr->hamwin[i];
    }
    for (i = winlen/2; i < winlen; i++) {
      sig_lpc[i+siglen-winlen] = sig_lpc[i+siglen-winlen] * siPtr->hamwin[i];
    }

    g_lpc = LpcAnalysis(sig_lpc,siglen,sectPtr->xfft,sectPtr->lpcOrder);
    ckfree((char *)sig_lpc);

    for (i=0; i<=sectPtr->lpcOrder; i++) {
      /* the factor is a guess, try looking for analytical value */
      sectPtr->xfft[i] = sectPtr->xfft[i] * 5000000000.0f;
    }
    for (i = sectPtr->lpcOrder + 1; i < fftlen; i++) {
      sectPtr->xfft[i] = 0.0;
    }
    
    Snack_DBPowerSpectrum(sectPtr->xfft);
    
    for (i = 0; i < fftlen/2; i++) {
      sectPtr->ffts[i] = -sectPtr->xfft[i];
    }
  } else {  /* usual FFT */
    
  for (j = 0; j < n; j++) {
    if (storeType == SOUND_IN_MEMORY) {
      if (siPtr->nchannels == 1 || siPtr->channel != -1) {
	int p = (RestartPos + j * skip) * siPtr->nchannels + siPtr->channel;

	for (i = 0; i < fftlen; i++) {
	  sectPtr->xfft[i] = (float) ((FSAMPLE(siPtr, p + siPtr->nchannels)
				       - preemph * FSAMPLE(siPtr, p))
				      * siPtr->hamwin[i]);
	  p += siPtr->nchannels;
	}
      } else {
	int c;
	
	for (i = 0; i < fftlen; i++) {
	  sectPtr->xfft[i] = 0.0;
	}
	for (c = 0; c < siPtr->nchannels; c++) {
	  int p = (RestartPos + j * skip) * siPtr->nchannels + c;
	  
	  for (i = 0; i < fftlen; i++) {
	    sectPtr->xfft[i] += (float) ((FSAMPLE(siPtr, p + siPtr->nchannels)
					  - preemph * FSAMPLE(siPtr, p))
					 * siPtr->hamwin[i]);
	    p += siPtr->nchannels;
	  }
	}
	for (i = 0; i < fftlen; i++) {
	  sectPtr->xfft[i] /= siPtr->nchannels;
	}
      }
    } else { /* storeType != SOUND_IN_MEMORY */
      if (siPtr->nchannels == 1 || siPtr->channel != -1) {
	int p = (RestartPos + j * skip) * siPtr->nchannels + siPtr->channel;
	
	for (i = 0; i < fftlen; i++) {
	  sectPtr->xfft[i] = (float) ((GetSample(&info, p + siPtr->nchannels)
				       - preemph * GetSample(&info, p))
				      * siPtr->hamwin[i]);
	  p += siPtr->nchannels;
	}
      } else {
	int c;
	
	for (i = 0; i < fftlen; i++) {
	  sectPtr->xfft[i] = 0.0;
	}
	for (c = 0; c < siPtr->nchannels; c++) {
	  int p = (RestartPos + j * skip) * siPtr->nchannels + c;
	  
	  for (i = 0; i < fftlen; i++) {
	    sectPtr->xfft[i] += (float) ((GetSample(&info, p +siPtr->nchannels)
					  - preemph * GetSample(&info, p))
					 * siPtr->hamwin[i]);
	    p += siPtr->nchannels;
	  }
	}
	for (i = 0; i < fftlen; i++) {
	  sectPtr->xfft[i] /= siPtr->nchannels;
	}
      }
    }

    Snack_DBPowerSpectrum(sectPtr->xfft);

    for (i = 0; i < fftlen/2; i++) {
      sectPtr->ffts[i] += sectPtr->xfft[i];
    }
  }

  for (i = 0; i < fftlen/2; i++) {
    sectPtr->ffts[i] = sectPtr->ffts[i] / (float) n;
    for (j = 0; j < n; j++) {
      if (storeType == SOUND_IN_MEMORY) {
	if (siPtr->nchannels == 1 || siPtr->channel != -1) {
	  int p = (RestartPos + j * skip) * siPtr->nchannels + siPtr->channel;
	  
	  for (i = 0; i < fftlen; i++) {
	    sectPtr->xfft[i] = (float) ((FSAMPLE(siPtr, p + siPtr->nchannels)
					 - preemph * FSAMPLE(siPtr, p))
					* siPtr->hamwin[i]);
	    p += siPtr->nchannels;
	  }
	} else {
	  int c;
	  
	  for (i = 0; i < fftlen; i++) {
	    sectPtr->xfft[i] = 0.0;
	  }
	  for (c = 0; c < siPtr->nchannels; c++) {
	    int p = (RestartPos + j * skip) * siPtr->nchannels + c;
	    
	    for (i = 0; i < fftlen; i++) {
	      sectPtr->xfft[i] += (float)((FSAMPLE(siPtr, p + siPtr->nchannels)
					   - preemph * FSAMPLE(siPtr, p))
					  * siPtr->hamwin[i]);
	      p += siPtr->nchannels;
	    }
	  }
	  for (i = 0; i < fftlen; i++) {
	    sectPtr->xfft[i] /= siPtr->nchannels;
	  }
	}
      } else { /* storeType != SOUND_IN_MEMORY */
	if (siPtr->nchannels == 1 || siPtr->channel != -1) {
	  int p = (RestartPos + j * skip) * siPtr->nchannels + siPtr->channel;
	  
	  for (i = 0; i < fftlen; i++) {
	    sectPtr->xfft[i] = (float) ((GetSample(&info, p + siPtr->nchannels)
					 - preemph * GetSample(&info, p))
					* siPtr->hamwin[i]);
	    p += siPtr->nchannels;
	  }
	} else {
	  int c;
	  
	  for (i = 0; i < fftlen; i++) {
	    sectPtr->xfft[i] = 0.0;
	  }
	  for (c = 0; c < siPtr->nchannels; c++) {
	    int p = (RestartPos + j * skip) * siPtr->nchannels + c;
	    
	    for (i = 0; i < fftlen; i++) {
	      sectPtr->xfft[i] += (float)((GetSample(&info, p+siPtr->nchannels)
					   - preemph * GetSample(&info, p))
					  * siPtr->hamwin[i]);
	      p += siPtr->nchannels;
	    }
	  }
	  for (i = 0; i < fftlen; i++) {
	    sectPtr->xfft[i] /= siPtr->nchannels;
	  }
	}
      }
      
      Snack_DBPowerSpectrum(sectPtr->xfft);
      
      for (i = 0; i < fftlen/2; i++) {
	sectPtr->ffts[i] += sectPtr->xfft[i];
      }
    }
    
    for (i = 0; i < fftlen/2; i++) {
      sectPtr->ffts[i] = sectPtr->ffts[i] / (float) n;
    if (sectPtr->ffts[i] > Max) Max = sectPtr->ffts[i];
    if (sectPtr->ffts[i] < Min) Min = sectPtr->ffts[i];
  }  

    }
  }
  if (storeType != SOUND_IN_MEMORY) {
    CloseLinkedFile(&info);
  }

  if (sectPtr->debug) Snack_WriteLog("Exit ComputeSection"); 
}

586
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708
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-
-
-
-







  sectPtr->si.channel = sectPtr->si.channelSet;
  if (sectPtr->si.nchannels == 1) {
    sectPtr->si.channel = 0;
  }
  
  sectPtr->si.validStart = s->validStart;

  sectPtr->si.fftmax = -10000;
  sectPtr->si.fftmin = 10000;
  Snack_InitWindow(sectPtr->si.hamwin, sectPtr->si.winlen, sectPtr->si.fftlen,
		   sectPtr->si.windowType);
  ComputeSection((Tk_Item *)sectPtr);
  
  if (ComputeSectionCoords((Tk_Item *)sectPtr) != TCL_OK) {
    return;
  }
  
  Tk_CanvasEventuallyRedraw(sectPtr->canvas,
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663
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-
+
+
+
+







      break;
    }
  }
#endif

  if (CheckFFTlen(interp, sectPtr->si.fftlen) != TCL_OK) return TCL_ERROR;

  if (CheckWinlen(interp, sectPtr->si.winlen) != TCL_OK) return TCL_ERROR;
  if (CheckWinlen(interp, sectPtr->si.winlen, sectPtr->si.fftlen) != TCL_OK)
    return TCL_ERROR;

  if (CheckLPCorder(interp, sectPtr->lpcOrder) != TCL_OK) return TCL_ERROR;

  if (OptSpecified(OPTION_SOUND)) {
    if (sectPtr->newSoundName == NULL) {
      sectPtr->sound = NULL;
      if (sectPtr->id) Snack_RemoveCallback(s, sectPtr->id);
      sectPtr->id = 0;
      sectPtr->si.BufPos = 0;
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782
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-
-
-
-







    doCompute = 1;
  }
  sectPtr->si.channel = sectPtr->si.channelSet;
  if (sectPtr->si.nchannels == 1) {
    sectPtr->si.channel = 0;
  }

  if (OptSpecified(OPTION_ANALYSISTYPE)) {
    int len = strlen(sectPtr->analysisTypeStr);

    if (strncasecmp(sectPtr->analysisTypeStr, "lpc", len) == 0) {
      sectPtr->type = 1;
    } else if (strncasecmp(sectPtr->analysisTypeStr, "fft", len) == 0) {
      sectPtr->type = 0;
    } else {
      Tcl_AppendResult(interp, "-type should be FFT or LPC", (char *) NULL);
      return TCL_ERROR;
    }
    doCompute = 1;
  }
  if (OptSpecified(OPTION_LPCORDER)) {
    doCompute = 1;
  }
  if (OptSpecified(OPTION_WINTYPE)) {
    if (GetWindowType(interp, sectPtr->windowTypeStr,
		      &sectPtr->si.windowTypeSet)
	!= TCL_OK) {
      return TCL_ERROR;
    }
    doCompute = 1;
  }
  sectPtr->si.windowType = sectPtr->si.windowTypeSet;

  if (doCompute) {
    sectPtr->nPoints = sectPtr->si.fftlen / 2;
    sectPtr->si.RestartPos = sectPtr->ssmp;
    sectPtr->si.fftmax = -10000;
    sectPtr->si.fftmin = 10000;
    Snack_InitWindow(sectPtr->si.hamwin, sectPtr->si.winlen,
		     sectPtr->si.fftlen, sectPtr->si.windowType);
    ComputeSection((Tk_Item *)sectPtr);
  }

  if (sectPtr->height <= 2) sectPtr->height = 0;

  if (sectPtr->fg == NULL) {
    newGC = None;

Changes to snack/generic/jkCanvSpeg.c.

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8
9
1

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4
5
6
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8
9

-
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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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618
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      break;
    }
  }
#endif

  if (CheckFFTlen(interp, spegPtr->si.fftlen) != TCL_OK) return TCL_ERROR;

  if (CheckWinlen(interp, spegPtr->si.winlen) != TCL_OK) return TCL_ERROR;
  if (CheckWinlen(interp, spegPtr->si.winlen, spegPtr->si.fftlen) != TCL_OK)
    return TCL_ERROR;

  if (OptSpecified(OPTION_SOUND)) {
    if (spegPtr->newSoundName == NULL) {
      spegPtr->sound = NULL;
      if (spegPtr->id) Snack_RemoveCallback(s, spegPtr->id);
      spegPtr->id = 0;
      spegPtr->si.BufPos = 0;
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    spegPtr->si.spacing = (float)(spegPtr->si.samprate / spegPtr->si.pixpsec);
    nfft = (int)((spegPtr->esmp - spegPtr->ssmp) / spegPtr->si.spacing);
    spegPtr->si.xUnderSamp = 1.0;
    spegPtr->si.RestartPos = spegPtr->ssmp;
    spegPtr->si.fftmax = -10000;
    spegPtr->si.fftmin = 10000;
    spegPtr->si.ssmp = spegPtr->ssmp;
    Snack_InitWindow(spegPtr->si.hamwin, spegPtr->si.winlen,
		     spegPtr->si.fftlen, spegPtr->si.windowType);

    n = ComputeSpeg(&spegPtr->si, nfft);

    if (n < 0) return TCL_OK;
    spegPtr->infft = nfft;
  }

1249
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-






-
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+
+
+
+
+







  int        ret = nfft;
  int       flag = 0;
  float g = 1.0;
  SnackLinkedFileInfo info;

  if (siPtr->debug > 2) Snack_WriteLogInt("    Enter ComputeSpeg", nfft);

  Snack_InitFFT(fftlen);

  if (storeType != SOUND_IN_MEMORY) {
    if (OpenLinkedFile(siPtr->sound, &info) != TCL_OK) {
      return(0);
    }
  }

  if (siPtr->winlen > siPtr->fftlen)
    winlen = siPtr->fftlen;
  if (winlen > fftlen)  /* should not happen */
    winlen = fftlen;

  Snack_InitFFT(fftlen);
  Snack_InitWindow(siPtr->hamwin, winlen, fftlen, siPtr->windowType);

  siPtr->doneSpeg = 0;
  /*  siPtr->computing = 1;*/

  while (siPtr->frlen <= ((nfft + siPtr->nfft) * fftlen / 2)) {
    if ((siPtr->frame[siPtr->nfrms] = (short *) ckalloc(2*FRAMESIZE)) == NULL)
      return 0;

Changes to snack/generic/jkCanvWave.c.

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5
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8
9
1

2
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4
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8
9

-
+







/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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-
+







  if (wavePtr->preCompFile != NULL && wavePtr->sound->readStatus != READ) {
    char *type = NULL;

    if (wavePtr->preSound != NULL) {
      wavePtr->preSound->fcname = NULL;
      Snack_DeleteSound(wavePtr->preSound);
    }
    wavePtr->preSound = Snack_NewSound(100, LIN8, wavePtr->sound->nchannels);
    wavePtr->preSound = Snack_NewSound(200, LIN8, wavePtr->sound->nchannels);
    if (wavePtr->preSound != NULL) {
      wavePtr->preSound->fcname = wavePtr->preCompFile;
      type = LoadSound(wavePtr->preSound, interp, NULL, 0, -1);
      if (wavePtr->preWI != NULL) ckfree((char *)wavePtr->preWI);
      wavePtr->preWI = (WaveItem *) ckalloc(sizeof(WaveItem));
      if (wavePtr->preWI != NULL) {
	wavePtr->preWI->nchannels = wavePtr->preSound->nchannels;
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	}
      }
      if (wavePtr->cmdPtr != NULL) {
	Snack_ProgressCallback(wavePtr->cmdPtr, interp,
			       "Computing waveform", 1.0);
      }
      if (SaveSound(wavePtr->preSound, interp, wavePtr->preCompFile, NULL,
		0, wavePtr->preSound->length, AIFF_STRING) == TCL_ERROR) {
		    0, NULL, 0, wavePtr->preSound->length, AIFF_STRING) ==
	  TCL_ERROR) {
	if (wavePtr->debug > 2) Snack_WriteLog("    Failed saving waveform\n");
	wavePtr->preCompFile = NULL;
      }
      wavePtr->preWI->bufPos = wavePtr->preSound->length;
      wavePtr->preWI->blocks = wavePtr->preSound->blocks;
      if (wavePtr->storeType != SOUND_IN_MEMORY) {
	CloseLinkedFile(&info);
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	  x1[0] + xo, Tk_CanvasPsY(canvas, (double) 
				   (-y1[0]/scale + yo+ wavePtr->height / 2)));
  Tcl_AppendResult(interp, buffer, (char *) NULL);
  for (i = 1; i < wavePtr->width; i++) {
    sprintf(buffer, "%.15g %.15g lineto\n%.15g %.15g lineto\n",
	    x0[i] + xo, Tk_CanvasPsY(canvas, (double) 
				     (-y0[i]/scale + yo+ wavePtr->height / 2)),
	    x1[i] + xo, Tk_CanvasPsY(canvas, (double) 
	    x1[i] + xo + 0.5, Tk_CanvasPsY(canvas, (double) 
				    (-y1[i]/scale + yo+ wavePtr->height / 2)));
    Tcl_AppendResult(interp, buffer, (char *) NULL);
  }

  if (wavePtr->zeroLevel) {
    sprintf(buffer, "%.15g %.15g moveto\n", (double) xo,
	    Tk_CanvasPsY(canvas, (double) (yo + wavePtr->height / 2)));

Changes to snack/generic/jkFilter.c.

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2

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5
6
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8
9
1

2
3
4
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7
8
9

-
+







/* 
 * Copyright (C) 2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 2001-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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154
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-
+






-
-
+
+







  (f->startProc)(f, si);

  len *= s->nchannels;
  fi = (startpos * s->nchannels) >> FEXP;
  fs = (startpos * s->nchannels) - (fi << FEXP);
  ei = (endpos * s->nchannels) >> FEXP;
  es = (endpos * s->nchannels) - (ei << FEXP);

  
  if (len > 0) {
    for (i = fi; i <= ei; i++) {
      int res;
      
      if (i > fi) fs = 0;
      if (i < ei) {
	inSize  = min(len, FBLKSIZE / s->nchannels) - fs / s->nchannels;
	outSize = min(len, FBLKSIZE / s->nchannels) - fs / s->nchannels;
	inSize  = min(len, (FBLKSIZE - fs) / s->nchannels);
	outSize = min(len, (FBLKSIZE - fs) / s->nchannels);
      } else {
	inSize  = (es - fs) / s->nchannels + 1;
	outSize = (es - fs) / s->nchannels + 1;
      }
      
      (f->flowProc)(f, si, &s->blocks[i][fs], &s->blocks[i][fs],
		    &inSize, &outSize);
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+
-
-
-
-
+
+
+
+







-
+

-
+



















+







mapConfigProc(Snack_Filter f, Tcl_Interp *interp, int objc,
	       Tcl_Obj *CONST objv[])
{
  mapFilter_t mf = (mapFilter_t) f;
  int i;
  double val;

  if (objc > mf->nm) {
  ckfree((char *) mf->m);
  mf->m = (float *) ckalloc(sizeof(float) * objc);
  mf->nm = objc;

    ckfree((char *) mf->m);
    mf->m = (float *) ckalloc(sizeof(float) * objc);
    mf->nm = objc;
  }
  for (i = 0; i < objc; i++) {
    if (Tcl_GetDoubleFromObj(interp, objv[i], &val) != TCL_OK) {
      return TCL_ERROR;
    }
    mf->m[i] = (float) val;
  }

  if (objc == 1 && mf->nm > 1 && mf->si != NULL) {
  if (objc == 1 && mf->nm > 1 && mf->width > 0) {
    /* Special case, duplicate m[0] on the diagonal */
    for (i = 0; i < mf->nm; i = i + mf->si->streamWidth + 1) {
    for (i = 0; i < mf->nm; i = i + mf->width + 1) {
      mf->m[i] = mf->m[0];
    }
  }

  return TCL_OK;
}

Snack_Filter
mapCreateProc(Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
{
  mapFilter_t mf;
  
  mf = (mapFilter_t) ckalloc(sizeof(mapFilter));
  mf->nm = objc;
  if ((mf->m = (float *) ckalloc(sizeof(float) * objc)) == NULL) {
    return (Snack_Filter) NULL;
  }
  mf->ns = 0;
  mf->s = NULL;
  mf->width = 0;

  if (mapConfigProc((Snack_Filter) mf, interp, objc, objv) != TCL_OK) {
    ckfree((char *) mf->m);
    ckfree((char *) mf);
    return (Snack_Filter) NULL;
  }

1220
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  composeCreateProc,
  composeConfigProc,
  composeStartProc,
  composeFlowProc,
  composeFreeProc,
  (Snack_FilterType *) NULL
};

struct fadeFilter {
  configProc *configProc;
  startProc  *startProc;
  flowProc   *flowProc;
  freeProc   *freeProc;
  Tcl_Interp *interp;
  Snack_Filter prev, next;
  Snack_StreamInfo si;
  double     dataRatio;
  int        reserved[4];
  /* private members */
  int        in;
  int        type;
  float      msLength;
  int        length;
  int        pos;
} fadeFilter;

typedef struct fadeFilter *fadeFilter_t;
#define LINEAR 0
#define EXPONENTIAL 1
#define LOGARITHMIC 2

int
fadeConfigProc(Snack_Filter f, Tcl_Interp *interp, int objc,
	       Tcl_Obj *CONST objv[])
{
  fadeFilter_t mf = (fadeFilter_t) f;
  char *typestr;
  double val;

  if (objc == 3) {
    typestr = Tcl_GetStringFromObj(objv[0], NULL);
    if (strcasecmp(typestr, "in") == 0) {
      mf->in = 1;
    } else if (strcasecmp(typestr, "out") == 0) {
      mf->in = 0;
    } else {
      Tcl_SetResult(interp, "bad fade direction, must be in or out",
		    TCL_STATIC);
      return TCL_ERROR;
    }
    
    typestr = Tcl_GetStringFromObj(objv[1], NULL);
    if (strncasecmp(typestr, "linear", 3) == 0) {
      mf->type = LINEAR;
    } else if (strncasecmp(typestr, "exponential", 3) == 0) {
      mf->type = EXPONENTIAL;
    } else if (strncasecmp(typestr, "logarithmic", 3) == 0) {
      mf->type = LOGARITHMIC;
    } else {
      Tcl_SetResult(interp,
	    "bad fade type, must be linear, exponential, or logarithmic",
		    TCL_STATIC);
      return TCL_ERROR;
    }
    
    if (Tcl_GetDoubleFromObj(interp, objv[2], &val) != TCL_OK) {
      return TCL_ERROR;
    }
    mf->msLength = (float) val;
  } else {
    
    /* Arguments need to be at least three */
    
    Tcl_WrongNumArgs(interp, 0, objv, "fade direction type length");
    return TCL_ERROR;
  }
  
  return TCL_OK;
}

Snack_Filter
fadeCreateProc(Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
{
  fadeFilter_t mf;
  
  mf = (fadeFilter_t) ckalloc(sizeof(fadeFilter));

  if (fadeConfigProc((Snack_Filter) mf, interp, objc, objv) != TCL_OK) {
    ckfree((char *) mf);
    return (Snack_Filter) NULL;
  }
  
  return (Snack_Filter) mf;
}

int
fadeStartProc(Snack_Filter f, Snack_StreamInfo si)
{
  fadeFilter_t mf = (fadeFilter_t) f;
  mf->length = (int) (mf->msLength * si->rate / 1000.0);
  mf->pos = 0;
  
  return TCL_OK;
}

#define EULER 2.7182818284590452354 
#define EXP_MINUS_1 0.36787944117

int
fadeFlowProc(Snack_Filter f, Snack_StreamInfo si, float *in, float *out,
	    int *inFrames, int *outFrames)
{
  fadeFilter_t mf = (fadeFilter_t) f;
  int i = 0, fr, wi;
  float factor = 1.0;
  
  for (fr = 0; fr < *inFrames; fr++) {
    if (mf->pos < mf->length) {
      switch (mf->type) {
      case LINEAR:
	if (mf->in) {
	  factor = (float) mf->pos / mf->length;
	} else {
	  factor = (float) (1.0 - (float) mf->pos / mf->length);
	}
	break;
      case EXPONENTIAL:
	if (mf->in) {
	  factor = (float) exp(-10.0+10.0 * mf->pos / mf->length);
	} else {
	  factor = (float) exp(-10.0 * mf->pos / mf->length);
	}
	break;
      case LOGARITHMIC:
	if (mf->in) {
	  factor = (float) (0.5 + 0.5 * log(EXP_MINUS_1 + (EULER - EXP_MINUS_1)
				    * ((float) mf->pos / mf->length)));
	} else {
	  factor = (float) (0.5 + 0.5 * log(EXP_MINUS_1 + (EULER - EXP_MINUS_1)
				    * (1.0-(float) mf->pos / mf->length)));
	}
	break;
      }
    } else {
      factor = 1.0;
    }
    for (wi = 0; wi < si->outWidth; wi++) {
      out[i] = factor * in[i];
      i++;
      mf->pos++;
    }
  }

  *outFrames = *inFrames;

  return TCL_OK;
}

void
fadeFreeProc(Snack_Filter f)
{
  fadeFilter_t mf = (fadeFilter_t) f;

  ckfree((char *) mf);
}

Snack_FilterType snackFadeType = {
  "fade",
  fadeCreateProc,
  fadeConfigProc,
  fadeStartProc,
  fadeFlowProc,
  fadeFreeProc,
  (Snack_FilterType *) NULL
};

void
Snack_CreateFilterType(Snack_FilterType *typePtr)
{
  Snack_FilterType *typePtr2, *prevPtr;

  /*
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    }
  }
  typePtr->nextPtr = snackFilterTypes;
  snackFilterTypes = typePtr;
}

extern void createSynthesisFilters();
extern void createIIRFilter();

void
SnackCreateFilterTypes(Tcl_Interp *interp)
{
  snackFilterTypes = &snackComposeType;
  snackComposeType.nextPtr = NULL;
  Snack_CreateFilterType(&snackMapType);
  Snack_CreateFilterType(&snackEchoType);
  Snack_CreateFilterType(&snackReverbType);
  Snack_CreateFilterType(&snackFadeType);
  createSynthesisFilters();
  createIIRFilter();
  /*  Snack_CreateFilterType(&snackLowpassType);*/
}

Added snack/generic/jkFilterIIR.c.























































































































































































































































































































































































































































































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/*
 * jkFilterIIR.c --
 *
 *	  Implementation of Snack IIR filters.
 *
 * Copyright (c) 2000 MusicMatch, Inc.  All rights reserved other than
 * as specified here.

 * The authors hereby grant permission to use, copy, modify, distribute,
 * and license this software and its documentation for any purpose, provided
 * that existing copyright notices are retained in all copies and that this
 * notice is included verbatim in any distributions. No written agreement,
 * license, or royalty fee is required for any of the authorized uses.
 * Modifications to this software may be copyrighted by their authors
 * and need not follow the licensing terms described here, provided that
 * the new terms are clearly indicated on the first page of each file where
 * they apply.
 * 
 * IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
 * FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
 * ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
 * DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.  THIS SOFTWARE
 * IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
 * NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
 * MODIFICATIONS.
 * 
 * GOVERNMENT USE: If you are acquiring this software on behalf of the
 * U.S. government, the Government shall have only "Restricted Rights"
 * in the software and related documentation as defined in the Federal 
 * Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2).  If you
 * are acquiring the software on behalf of the Department of Defense, the
 * software shall be classified as "Commercial Computer Software" and the
 * Government shall have only "Restricted Rights" as defined in Clause
 * 252.227-7013 (c) (1) of DFARs.  Notwithstanding the foregoing, the
 * authors grant the U.S. Government and others acting in its behalf
 * permission to use and distribute the software in accordance with the
 * terms specified in this license. 
 *
 */

#include "snack.h"
#include <math.h>
#include <stdlib.h>
#include <string.h>

/* Private stuff */

/* far below here for the initialization of this structure */
Snack_FilterType snackIIRType;

/* this structure is a C-coded sub-class of a snack filter */
typedef struct iirFilter {
  configProc *configProc;
  flowProc   *flowProc;
  freeProc   *freeProc;
  Tcl_Interp *interp;
  Snack_Filter prev, next;
  Snack_StreamInfo si;
  double     dataRatio;
  int        reserved[4];
  /* private members */
  int nInTaps;		/* number of numerator taps on filter */
  int nOutTaps;		/* number of denominator taps on filter */
  int width;			/* number of channels in the history.
				   Individual samples are interleaved. */
  double dither;		/* size of triangular dither */
  double noise;		/* size of additive gaussian noise */
  double *itaps;		/* numerator tap weights */
  double *otaps;		/* denominator tap weights */
  int in, out;		/* current position in histories */
  double *inputs;		/* input history for numerator */
  double *outputs;		/* output history for denominator */
} iirFilter, *iirFilter_t;

/*
 * iirConfigProc -- Process the configuration options for an IIR filter.
 * 
 * Arguments:
 *
 * f		Filter structure to configure.
 *
 * interp	Interpreter to use for error messages.
 *
 * objc		Number of options
 *
 * objv		Number of arguments
 * 
 * Returns:
 * TCL_OK or TCL_ERROR as appropriate.  Side effect on f.
 * 
 */
static int
iirConfigProc(Snack_Filter f, Tcl_Interp *interp, int objc,
	       Tcl_Obj *CONST objv[])
{
  int j, n;
  Tcl_Obj **impObj;
  double dither, noise;
  iirFilter_t iir = (iirFilter_t) f;
  
  int arg, arg1 = 0;
  static char *optionStrings[] = {
    "-impulse", "-numerator", "-denominator", "-noise", "-dither", NULL
  };
  enum options {
    IMPULSE, TOP, BOTTOM, NOISE, DITHER
  };
  
  /* The default values have already been set if this is a new
     filter, or the structure has already been configured.  Either way,
     our default course of action here, is to leave everything untouched.
  */
  for (arg = arg1; arg < objc; arg += 2) {
    int index;
    
    /* Tcl_GetIndexFromObj is good to use since it remembers the result
       and makes faster decisions next time */
    if (Tcl_GetIndexFromObj(interp, objv[arg], optionStrings, "option", 0,
			    &index) != TCL_OK) {
      return TCL_ERROR;
    }
    
    switch ((enum options) index) {
      /* size of triangular dithering on output */
    case DITHER:
      if (Tcl_GetDoubleFromObj(interp, objv[arg+1], &dither) != TCL_OK) {
	return TCL_ERROR;
      }
      if (dither < 0) dither = -dither;
      iir->dither = dither;
      break;
      
      /* amount of gaussian noise to add */
    case NOISE:
      if (Tcl_GetDoubleFromObj(interp, objv[arg+1], &noise) != TCL_OK) {
	return TCL_ERROR;
      }
      if (noise < 0) noise = -noise;
      iir->noise = noise;
      break;
      
      /* either the impulse response if this is really an FIR or
	 the numerator of a rational filter of the form
	 y = x P(z)/Q(z).  People who are thinking in terms of
	 FIR's will probably prefer to use -impulse while IIR
	 designers will use -numerator and -denominator.
      */
    case IMPULSE:
    case TOP:
      if (Tcl_ListObjGetElements(interp, objv[arg+1], &n, &impObj) != TCL_OK) {
	return TCL_ERROR;
      }
      
      iir->nInTaps = n;
      iir->itaps = (double *) ckalloc( n * sizeof(iir->itaps[0]) );
      
      for (j = 0; j < n; j++) {
	if (Tcl_GetDoubleFromObj(interp, impObj[j], &iir->itaps[j]) != TCL_OK) {
	  return TCL_ERROR;
	}
      }
      
      break;
      
      /* the denominator of a ratio filter */
    case BOTTOM:
      if (Tcl_ListObjGetElements(interp, objv[arg+1], &n, &impObj) != TCL_OK) {
	return TCL_ERROR;
      }
      
      iir->nOutTaps = n;
      iir->otaps = (double *) ckalloc( n * sizeof(iir->otaps[0]) );
      
      for (j = 0; j < n; j++) {
	if (Tcl_GetDoubleFromObj(interp, impObj[j], &iir->otaps[j]) != TCL_OK) {
	  return TCL_ERROR;
	}
      }
      
      break;
    }
  }
  
  return TCL_OK;
}

/*
 * iirCreateProc -- Create a filter structure.
 * 
 * Arguments:
 *
 * interp		to report errors in
 *
 * objc			number of arguments
 *
 * objv			number of arguments (for configuration)
 * 
 * Returns:
 * A filter structure all filled in and configurated!
 * 
 */

static Snack_Filter
iirCreateProc(Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
{
  iirFilter_t iir;
  
  iir = (iirFilter_t) ckalloc(sizeof(*iir));
  memset(iir, 0, sizeof(*iir));
  
  /* default values set before calling the config */
  iir->dither = 0.75;
  iir->nInTaps = 0;
  iir->nOutTaps = 0;
  
  if (iirConfigProc((Snack_Filter) iir, interp, objc, objv) != TCL_OK) {
    ckfree((char *) iir);
    return (Snack_Filter) NULL;
  }
  
  return (Snack_Filter) iir;
}

/*
 * iirStartProc -- Reinitialize a filter structure.
 * 
 * Arguments:
 *
 * f		The filter to initialize
 *
 * si		Information about a stream.  This is passed to allow the
 *		filter to be customized for the number of channels and such.
 *
 * Returns:
 * TCL_OK or TCL_ERROR as appropriate
 * 
 */

static int
iirStartProc(Snack_Filter f, Snack_StreamInfo si)
{
  int i;
  iirFilter_t iir = (iirFilter_t) f;
  
  if (iir->nInTaps > 0) {
    iir->inputs = (double *) ckalloc(si->outWidth * 
				     iir->nInTaps * sizeof(iir->inputs[0]));
    for (i = 0; i < iir->nInTaps * si->outWidth; i++ ) {
      iir->inputs[i] = 0;
    }
  }
  if (iir->nOutTaps > 0) {
    iir->outputs = (double *) ckalloc(si->outWidth * 
				      iir->nOutTaps * sizeof(iir->outputs[0]));
    for (i = 0; i < iir->nOutTaps * si->outWidth; i++ ) {
      iir->outputs[i] = 0;
    }
  }
  
  iir->in = iir->out = 0;
  
  return TCL_OK;
}

/*
 * name-of-function -- Return a normal random deviate.  The sum of 12
 * 	unit uniform deviates has very close to a normal distribution.
 * 	Changing the sign on 6 of them gives a mean of 0.  This is
 * 	probably slightly faster than the standard method that
 * 	requires half of a sine and half of a log to compute, and it
 * 	is thread safe.  Accuracy is infinitessimally lower.  None of
 * 	these differences matter compared to the fact that I can get
 * 	this one exactly right from memory.
 * 	
 * Arguments:
 *
 * 
 * Returns:
 * A unit normal deviate.
 * 
 */

static double
xdrand48()
{
  return((double)rand()/RAND_MAX);
}

static double
normalDeviate()
{
  return
    xdrand48() + xdrand48() - xdrand48() - xdrand48() +
    xdrand48() + xdrand48() - xdrand48() - xdrand48() +
    xdrand48() + xdrand48() - xdrand48() - xdrand48();
}

/*
 * triangularDeviate -- Return a triangular dither sample.  Adding a
 * 	dither signal from a triangular distribution converts highly
 * 	correlated quantization noise into uncorrelated white noise
 * 	that is generally considered to be less perceptible.
 * 	Theoretically, 1LSB is the optimal size, but in practice,
 * 	somewhat less is actually used.
 * 	
 * Arguments:
 *
 * Returns:
 * A random value from a unit sized triangular distribution.
 * 
 */

static double
triangularDeviate()
{
    return xdrand48() - xdrand48();
}

/*
 * iirFlowProc -- Filter a block of samples, producing a block of
 * 	output samples.
 * 
 * Arguments:
 *
 * f		The filter to apply to the samples.
 *
 * si 		stream info structure.  Should tell us how many channels
 *		to process.  
 *
 * in		Input frame.  An array of (*inFrames) samples.
 *
 * out		Output frame.  An array of samples.
 * 
 * inFrames	A pointer to the number of input frames.  We always
 *		process all of our input, so we never change this.
 * 
 * outFrames	A pointer to the number of output frames.  This must be
 *		at least >= *inFrames.  We return the number of samples
 *		that we process.
 * 
 * Returns:
 * TCL_OK or TCL_ERROR as appropriate
 * 
 * Note:
 */

static int
iirFlowProc(Snack_Filter f, Snack_StreamInfo si, float *in, float *out,
	    int *inFrames, int *outFrames)
{
  iirFilter_t iir = (iirFilter_t) f;
  int i, j, k, wi, iir_in = 0, iir_out = 0;
  double insmp, outsmp;
  
  /* deal with stream width sanity check */
  
  /* so... for each input, process it into the filter */
  
  for (wi = 0; wi < si->outWidth; wi++) {
    iir_in = iir->in;
    iir_out = iir->out;
    for (i = 0; i < *inFrames && i < *outFrames; i++) {
      /* get value and cast to a very safe working copy */
      insmp = (double) in[i*si->outWidth+wi];
      iir->inputs[iir_in*si->outWidth+wi] = insmp;
      
      /* output is initially zero.  We add up the contribution for
	 the input history elements */
      outsmp = 0;
      if (iir->itaps != NULL) {
	/* this is the inner convolution loop.  We should unroll
	   this or something if we care about speed.  Of course,
	   we don't care until we know that the code really works!	   
	   before undertaking a full unrolling, we could just
	   split the loop into two loops to avoid the %
	   operation. 
	*/
	k = iir_in;
	for (j = 0 ; j < iir->nInTaps ; j++) {
	  outsmp += iir->itaps[j] * iir->inputs[k*si->outWidth+wi];
	  k = (k+1)%(iir->nInTaps);
	}
	iir_in = (iir_in+1)%(iir->nInTaps);
      }
      
      if (iir->otaps != NULL) {
	/* now we process the output history.  What happens here
	   is that we rearrange the normal formula from this form
	   
	        P(z)
	   y = ------ x
	        Q(z)
	   
	   to isolate the current output value y_n and put all
	   delayed outputs and all current and delayed inputs
	   together on the RHS.  Thus,
	   
	   q_0 y_n = P(z) x - [Q(z) - q_0] y
	   
	   1  [                                                   ]
	   y_n =  --- [ sum_{i=0..} p_i x_{n-i} - sum_{i=1..} q_i y_{n-i} ]
	   q_0 [                                                   ]
	   
	   
	   So clever, so droll.
	*/
	k = iir_out;
	
	/* note that we skip the 0'th element here */
	for (j = 1 ; j < iir->nOutTaps ; j++) {
	  outsmp -= iir->otaps[j] * iir->outputs[k*si->outWidth+wi];
	  k = (k+1)%(iir->nInTaps);
	}
	iir_out = (iir_out+1)%(iir->nOutTaps);
	
	/* here is where we use the zero'th element */
	outsmp /= iir->otaps[0];
	iir->outputs[iir_out*si->outWidth+wi] = outsmp;
      } 
      out[i*si->outWidth+wi] = (float) (outsmp + iir->noise * normalDeviate()
					+ iir->dither * triangularDeviate());
    }
  }
  iir->in = iir_in;
  iir->out = iir_out;
  
  return TCL_OK;
}

/*
 * iirFreeProc -- Deallocate a filter structure.
 * 
 * Arguments:
 *
 * f		The structure to deallocate.
 * 
 * Returns:
 * void
 */

static void
iirFreeProc(Snack_Filter f)
{
  iirFilter_t iir = (iirFilter_t) f;
  
  if (iir->itaps != NULL) ckfree((void *) iir->itaps);
  if (iir->otaps != NULL) ckfree((void *) iir->otaps);
  if (iir->inputs != NULL) ckfree((void *) iir->inputs);
  if (iir->outputs != NULL) ckfree((void *) iir->outputs);
}

Snack_FilterType snackIIRType = {
  "iir",
  iirCreateProc,
  iirConfigProc,
  iirStartProc,
  iirFlowProc,
  iirFreeProc,
  (Snack_FilterType *) NULL
};

void
createIIRFilter() {
  Snack_CreateFilterType(&snackIIRType);
}

Changes to snack/generic/jkFormatMP3.c.

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/* 
 * Copyright (C) 2000 Kare Sjolander <kare@speech.kth.se>
/*
 * Copyright (C) 2000-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *

  This file is derived from

  amp MPEG audio decoder (version 0.7.3)
  (C) Tomislav Uzelac  1996,1997

 
 This file is derived from
 
 amp MPEG audio decoder (version 0.7.3)
 (C) Tomislav Uzelac  1996,1997
 
This software can be used freely for any purpose. It can be distributed
freely, as long as it is not sold commercially without permission from
Tomislav Uzelac <tuzelac@rasip.fer.hr>. However, including this software
on CD_ROMs containing other free software is explicitly permitted even 
on CD_ROMs containing other free software is explicitly permitted even
when a modest distribution fee is charged for the CD, as long as this
software is not a primary selling argument for the CD.

Building derived versions of this software is permitted, as long as they
are not sold commercially without permission from Tomislav Uzelac 
are not sold commercially without permission from Tomislav Uzelac
<tuzelac@rasip.fer.hr>. Any derived versions must be clearly marked as
such, and must be called by a name other than amp. Any derived versions
must retain this copyright notice.
*/

#include <stdlib.h>
#include <tcl.h>
#include "snack.h"
#include "jkFormatMP3.h"
#include <string.h>


static char *mm;
static char *readbuf;
static int bufind = 0;
static Tcl_Channel gch;
static int fool_opt = 0;

extern int useOldObjAPI;

/* "getbits.c" */

static int
_fillbfr(int size)
{
  if (gch != NULL) {
    size = Tcl_Read(gch, (char *) _buffer, size);
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    _buffer[pos+1] << 16 |
    _buffer[pos+2] << 8 |
    _buffer[pos+3];
  ret_value <<= _bptr & 7;
  ret_value >>= 32 - n;
  _bptr += n;
  return ret_value;
}       
}

static int
fillbfr(int advance)
{
  int overflow;

  if (gch != NULL) {
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    buffer[pos+1] << 16 |
    buffer[pos+2] << 8 |
    buffer[pos+3];
  ret_value <<= data & 7;
  ret_value >>= 32 - n;

  return ret_value;
}       
}

static void
sackbits(int n)
{
  data += n;
  data &= 8*BUFFER_SIZE-1;
}
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      info->big_values[gr][ch]=_getbits(9);
      info->global_gain[gr][ch]=_getbits(8);
      if (header->ID) info->scalefac_compress[gr][ch]=_getbits(4);
      else info->scalefac_compress[gr][ch]=_getbits(9);
      info->window_switching_flag[gr][ch]=_getbits(1);

      if (info->window_switching_flag[gr][ch]) {
	info->block_type[gr][ch]=_getbits(2);
	info->mixed_block_flag[gr][ch]=_getbits(1);
        info->block_type[gr][ch]=_getbits(2);
        info->mixed_block_flag[gr][ch]=_getbits(1);

	for (region=0;region<2;region++)
	  info->table_select[gr][ch][region]=_getbits(5);
	info->table_select[gr][ch][2]=0;
        for (region=0;region<2;region++)
          info->table_select[gr][ch][region]=_getbits(5);
        info->table_select[gr][ch][2]=0;

	for (window=0;window<3;window++)
	  info->subblock_gain[gr][ch][window]=_getbits(3);
        for (window=0;window<3;window++)
          info->subblock_gain[gr][ch][window]=_getbits(3);
      } else {
	for (region=0;region<3;region++)
	  info->table_select[gr][ch][region]=_getbits(5);
        for (region=0;region<3;region++)
          info->table_select[gr][ch][region]=_getbits(5);

	info->region0_count[gr][ch]=_getbits(4);
	info->region1_count[gr][ch]=_getbits(3);
	info->block_type[gr][ch]=0;
        info->region0_count[gr][ch]=_getbits(4);
        info->region1_count[gr][ch]=_getbits(3);
        info->block_type[gr][ch]=0;
      }

      if (header->ID) info->preflag[gr][ch]=_getbits(1);
      info->scalefac_scale[gr][ch]=_getbits(1);
      info->count1table_select[gr][ch]=_getbits(1);
    }
  return;
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decode_scalefactors(struct SIDE_INFO *info,struct AUDIO_HEADER *header,int gr,int ch)
{
  int sfb,window;
  int slen1,slen2;
  int i1,i2,i=0;
  int j,k;
  if (header->ID==1) {
    /* this is MPEG-1 scalefactors format, quite different than 
     * the MPEG-2 format. 
    /* this is MPEG-1 scalefactors format, quite different than
     * the MPEG-2 format.
     */
    slen1=t_slen1[info->scalefac_compress[gr][ch]];
    slen2=t_slen2[info->scalefac_compress[gr][ch]];
    i1=3*slen1;
    i2=3*slen2;

    if (info->window_switching_flag[gr][ch] && info->block_type[gr][ch]==2) {
      if (info->mixed_block_flag[gr][ch]) {
	for (sfb=0;sfb<8;sfb++) {
	  scalefac_l[gr][ch][sfb]=getbits(slen1);
	  i+=slen1;
	}
	for (sfb=3;sfb<6;sfb++) {
	  for (window=0;window<3;window++)
	    scalefac_s[gr][ch][sfb][window]=getbits(slen1);
	  i+=i1;
	}
	for (;sfb<12;sfb++) {
	  for (window=0;window<3;window++)
	    scalefac_s[gr][ch][sfb][window]=getbits(slen2);
	  i+=i2;
	}
        for (sfb=0;sfb<8;sfb++) {
          scalefac_l[gr][ch][sfb]=getbits(slen1);
          i+=slen1;
        }
        for (sfb=3;sfb<6;sfb++) {
          for (window=0;window<3;window++)
            scalefac_s[gr][ch][sfb][window]=getbits(slen1);
          i+=i1;
        }
        for (;sfb<12;sfb++) {
          for (window=0;window<3;window++)
            scalefac_s[gr][ch][sfb][window]=getbits(slen2);
          i+=i2;
        }
      } else { /* !mixed_block_flag */
	for (sfb=0;sfb<6;sfb++) {
	  for (window=0;window<3;window++)
	    scalefac_s[gr][ch][sfb][window]=getbits(slen1);
	  i+=i1;
	}
	for (;sfb<12;sfb++) {
	  for (window=0;window<3;window++)
	    scalefac_s[gr][ch][sfb][window]=getbits(slen2);
	  i+=i2;
	}
        for (sfb=0;sfb<6;sfb++) {
          for (window=0;window<3;window++)
            scalefac_s[gr][ch][sfb][window]=getbits(slen1);
          i+=i1;
        }
        for (;sfb<12;sfb++) {
          for (window=0;window<3;window++)
            scalefac_s[gr][ch][sfb][window]=getbits(slen2);
          i+=i2;
        }
      }
      for (window=0;window<3;window++) 
	scalefac_s[gr][ch][12][window]=0;
      for (window=0;window<3;window++)
        scalefac_s[gr][ch][12][window]=0;
    } else { /* block_type!=2 */
      if ( !info->scfsi[ch][0] || !gr )
	for (sfb=0;sfb<6;sfb++) {
	  scalefac_l[gr][ch][sfb]=getbits(slen1);
	  i+=slen1;
	}
        for (sfb=0;sfb<6;sfb++) {
          scalefac_l[gr][ch][sfb]=getbits(slen1);
          i+=slen1;
        }
      else for (sfb=0;sfb<6;sfb++) {
	scalefac_l[1][ch][sfb]=scalefac_l[0][ch][sfb];
        scalefac_l[1][ch][sfb]=scalefac_l[0][ch][sfb];
      }
      if ( !info->scfsi[ch][1] || !gr )
	for (sfb=6;sfb<11;sfb++) {
	  scalefac_l[gr][ch][sfb]=getbits(slen1);
	  i+=slen1;
	}
        for (sfb=6;sfb<11;sfb++) {
          scalefac_l[gr][ch][sfb]=getbits(slen1);
          i+=slen1;
        }
      else for (sfb=6;sfb<11;sfb++) {
	scalefac_l[1][ch][sfb]=scalefac_l[0][ch][sfb];
        scalefac_l[1][ch][sfb]=scalefac_l[0][ch][sfb];
      }
      if ( !info->scfsi[ch][2] || !gr )
	for (sfb=11;sfb<16;sfb++) {
	  scalefac_l[gr][ch][sfb]=getbits(slen2);
	  i+=slen2;
	}
        for (sfb=11;sfb<16;sfb++) {
          scalefac_l[gr][ch][sfb]=getbits(slen2);
          i+=slen2;
        }
      else for (sfb=11;sfb<16;sfb++) {
	scalefac_l[1][ch][sfb]=scalefac_l[0][ch][sfb];
        scalefac_l[1][ch][sfb]=scalefac_l[0][ch][sfb];
      }
      if ( !info->scfsi[ch][3] || !gr )
	for (sfb=16;sfb<21;sfb++) {
	  scalefac_l[gr][ch][sfb]=getbits(slen2);
	  i+=slen2;
	}
        for (sfb=16;sfb<21;sfb++) {
          scalefac_l[gr][ch][sfb]=getbits(slen2);
          i+=slen2;
        }
      else for (sfb=16;sfb<21;sfb++) {
	scalefac_l[1][ch][sfb]=scalefac_l[0][ch][sfb];
        scalefac_l[1][ch][sfb]=scalefac_l[0][ch][sfb];
      }
      scalefac_l[gr][ch][21]=0;
    }
  } else { /* ID==0 */
    int index = 0,index2,spooky_index;
    int slen[5],nr_of_sfb[5]; /* actually, there's four of each, not five, labelled 1 through 4, but
			       * what's a word of storage compared to one's sanity. so [0] is irellevant.
			       */
                               * what's a word of storage compared to one's sanity. so [0] is irellevant.
                               */

    /* ok, so we got 3 indexes. 
    /* ok, so we got 3 indexes.
     * spooky_index - indicates whether we use the normal set of slen eqs and nr_of_sfb tables
     *                or the one for the right channel of intensity stereo coded frame
     * index        - corresponds to the value of scalefac_compress, as listed in the standard
     * index2       - 0 for long blocks, 1 for short wo/ mixed_block_flag, 2 for short with it
     */
    if ( (header->mode_extension==1 || header->mode_extension==3) && ch==1) { /* right ch... */
      int int_scalefac_compress=info->scalefac_compress[0][ch]>>1;
      intensity_scale=info->scalefac_compress[0][1]&1;
      spooky_index=1;
      if (int_scalefac_compress < 180) {
	slen[1]=int_scalefac_compress/36;
	slen[2]=(int_scalefac_compress%36)/6;
	slen[3]=(int_scalefac_compress%36)%6;
	slen[4]=0;
	info->preflag[0][ch]=0;
	index=0;
        slen[1]=int_scalefac_compress/36;
        slen[2]=(int_scalefac_compress%36)/6;
        slen[3]=(int_scalefac_compress%36)%6;
        slen[4]=0;
        info->preflag[0][ch]=0;
        index=0;
      }
      if ( 180 <= int_scalefac_compress && int_scalefac_compress < 244) {
	slen[1]=((int_scalefac_compress-180)%64)>>4;
	slen[2]=((int_scalefac_compress-180)%16)>>2;
	slen[3]=(int_scalefac_compress-180)%4;
	slen[4]=0;
	info->preflag[0][ch]=0;
	index=1;
        slen[1]=((int_scalefac_compress-180)%64)>>4;
        slen[2]=((int_scalefac_compress-180)%16)>>2;
        slen[3]=(int_scalefac_compress-180)%4;
        slen[4]=0;
        info->preflag[0][ch]=0;
        index=1;
      }
      if ( 244 <= int_scalefac_compress && int_scalefac_compress < 255) {
	slen[1]=(int_scalefac_compress-244)/3;
	slen[2]=(int_scalefac_compress-244)%3;
	slen[3]=0;
	slen[4]=0;
	info->preflag[0][ch]=0;
	index=2;
        slen[1]=(int_scalefac_compress-244)/3;
        slen[2]=(int_scalefac_compress-244)%3;
        slen[3]=0;
        slen[4]=0;
        info->preflag[0][ch]=0;
        index=2;
      }
    } else { /* the usual */
      spooky_index=0;
      if (info->scalefac_compress[0][ch] < 400) {
	slen[1]=(info->scalefac_compress[0][ch]>>4)/5;
	slen[2]=(info->scalefac_compress[0][ch]>>4)%5;
	slen[3]=(info->scalefac_compress[0][ch]%16)>>2;
	slen[4]=info->scalefac_compress[0][ch]%4;
	info->preflag[0][ch]=0;
	index=0;
        slen[1]=(info->scalefac_compress[0][ch]>>4)/5;
        slen[2]=(info->scalefac_compress[0][ch]>>4)%5;
        slen[3]=(info->scalefac_compress[0][ch]%16)>>2;
        slen[4]=info->scalefac_compress[0][ch]%4;
        info->preflag[0][ch]=0;
        index=0;
      }
      if (info->scalefac_compress[0][ch] >= 400 && info->scalefac_compress[0][ch] < 500) {
	slen[1]=((info->scalefac_compress[0][ch]-400)>>2)/5;
	slen[2]=((info->scalefac_compress[0][ch]-400)>>2)%5;
	slen[3]=(info->scalefac_compress[0][ch]-400)%4;
	slen[4]=0;
	info->preflag[0][ch]=0;
	index=1;
      } 
        slen[1]=((info->scalefac_compress[0][ch]-400)>>2)/5;
        slen[2]=((info->scalefac_compress[0][ch]-400)>>2)%5;
        slen[3]=(info->scalefac_compress[0][ch]-400)%4;
        slen[4]=0;
        info->preflag[0][ch]=0;
        index=1;
      }
      if (info->scalefac_compress[0][ch] >= 500 && info->scalefac_compress[0][ch] < 512) {
	slen[1]=(info->scalefac_compress[0][ch]-500)/3;
	slen[2]=(info->scalefac_compress[0][ch]-500)%3;
	slen[3]=0;
	slen[4]=0;
	info->preflag[0][ch]=1;
	index=2;
        slen[1]=(info->scalefac_compress[0][ch]-500)/3;
        slen[2]=(info->scalefac_compress[0][ch]-500)%3;
        slen[3]=0;
        slen[4]=0;
        info->preflag[0][ch]=1;
        index=2;
      }
    }

    if (info->window_switching_flag[0][ch] && info->block_type[0][ch]==2)
      if (info->mixed_block_flag[0][ch]) index2=2;
      else index2=1;
    else index2=0;

    for (j=1;j<=4;j++) nr_of_sfb[j]=spooky_table[spooky_index][index][index2][j-1];

    /* now we'll do some actual scalefactor extraction, and a little more.
     * for each scalefactor band we'll set the value of is_max to indicate
     * illegal is_pos, since with MPEG2 it's not 'hardcoded' to 7.
     */
    if (!info->window_switching_flag[0][ch] || (info->window_switching_flag[0][ch] && info->block_type[0][ch]!=2)) {
      sfb=0;
      for (j=1;j<=4;j++) {
	for (k=0;k<nr_of_sfb[j];k++) {
	  scalefac_l[0][ch][sfb]=getbits(slen[j]);
	  i+=slen[j];
	  if (ch) is_max[sfb]=(1<<slen[j])-1;
	  sfb++;
	}
        for (k=0;k<nr_of_sfb[j];k++) {
          scalefac_l[0][ch][sfb]=getbits(slen[j]);
          i+=slen[j];
          if (ch) is_max[sfb]=(1<<slen[j])-1;
          sfb++;
        }
      }
    } else if (info->block_type[0][ch]==2) {
      if (!info->mixed_block_flag[0][ch]) {
	sfb=0;
	for (j=1;j<=4;j++) {
	  for (k=0;k<nr_of_sfb[j];k+=3) {
	    /* we assume here that nr_of_sfb is divisible by 3. it is.
	     */
	    scalefac_s[0][ch][sfb][0]=getbits(slen[j]);
	    scalefac_s[0][ch][sfb][1]=getbits(slen[j]);
	    scalefac_s[0][ch][sfb][2]=getbits(slen[j]);
	    i+=3*slen[j];
	    if (ch) is_max[sfb+6]=(1<<slen[j])-1;
	    sfb++;
	  }
	}
        sfb=0;
        for (j=1;j<=4;j++) {
          for (k=0;k<nr_of_sfb[j];k+=3) {
            /* we assume here that nr_of_sfb is divisible by 3. it is.
             */
            scalefac_s[0][ch][sfb][0]=getbits(slen[j]);
            scalefac_s[0][ch][sfb][1]=getbits(slen[j]);
            scalefac_s[0][ch][sfb][2]=getbits(slen[j]);
            i+=3*slen[j];
            if (ch) is_max[sfb+6]=(1<<slen[j])-1;
            sfb++;
          }
        }
      } else {
	/* what we do here is:
	 * 1. assume that for every fs, the two lowest subbands are equal to the
	 *    six lowest scalefactor bands for long blocks/MPEG2. they are.
	 * 2. assume that for every fs, the two lowest subbands are equal to the
	 *    three lowest scalefactor bands for short blocks. they are.
	 */
	sfb=0;
	for (k=0;k<6;k++) {
	  scalefac_l[0][ch][sfb]=getbits(slen[1]);
	  i+=slen[j];
	  if (ch) is_max[sfb]=(1<<slen[1])-1;
	  sfb++;
	}
	nr_of_sfb[1]-=6;
	sfb=3;
	for (j=1;j<=4;j++) {
	  for (k=0;k<nr_of_sfb[j];k+=3) {
	    scalefac_s[0][ch][sfb][0]=getbits(slen[j]);
	    scalefac_s[0][ch][sfb][1]=getbits(slen[j]);
	    scalefac_s[0][ch][sfb][2]=getbits(slen[j]);
	    i+=3*slen[j];
	    if (ch) is_max[sfb+6]=(1<<slen[j])-1;
	    sfb++;
	  }
	}
        /* what we do here is:
         * 1. assume that for every fs, the two lowest subbands are equal to the
         *    six lowest scalefactor bands for long blocks/MPEG2. they are.
         * 2. assume that for every fs, the two lowest subbands are equal to the
         *    three lowest scalefactor bands for short blocks. they are.
         */
        sfb=0;
        for (k=0;k<6;k++) {
          scalefac_l[0][ch][sfb]=getbits(slen[1]);
          i+=slen[j];
          if (ch) is_max[sfb]=(1<<slen[1])-1;
          sfb++;
        }
        nr_of_sfb[1]-=6;
        sfb=3;
        for (j=1;j<=4;j++) {
          for (k=0;k<nr_of_sfb[j];k+=3) {
            scalefac_s[0][ch][sfb][0]=getbits(slen[j]);
            scalefac_s[0][ch][sfb][1]=getbits(slen[j]);
            scalefac_s[0][ch][sfb][2]=getbits(slen[j]);
            i+=3*slen[j];
            if (ch) is_max[sfb+6]=(1<<slen[j])-1;
            sfb++;
          }
        }
      }
    }
  }
  return i;
}

/* this is for huffman decoding, but inlined funcs have to go first
 */
static int
_qsign(int x,int *q)
{
  int ret_value=0,i;
  for (i=3;i>=0;i--) 
  for (i=3;i>=0;i--)
    if ((x>>i) & 1) {
      if (getbits(1)) *q++=-1;
      else *q++=1;
      ret_value++;
    }
    else *q++=0;
  return ret_value;
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     */
    r[0]=t_l[info->region0_count[gr][ch]] + 1;
    if (r[0] > big_value)
      r[0]=r[1]=big_value;
    else {
      r[1]=t_l[ info->region0_count[gr][ch] + info->region1_count[gr][ch] + 1 ] + 1;
      if (r[1] > big_value)
	r[1]=big_value;
        r[1]=big_value;
    }
    r[2]=big_value;

  } else {

    if (info->block_type[gr][ch]==2 && info->mixed_block_flag[gr][ch]==0) 
    if (info->block_type[gr][ch]==2 && info->mixed_block_flag[gr][ch]==0)
      r[0]=3*(t_s[2]+1);
    else 
    else
      r[0]=t_l[7]+1;

    if (r[0] > big_value)
      r[0]=big_value;

    r[1]=r[2]=big_value;
  }

  l=0; cnt=0;
  for (i=0;i<3;i++) {
    for (;l<r[i];l+=2) {
      int j = linbits[i];

      cnt+=huffman_decode(tr[i],&x,&y);

      if (x==15 && j>0) {
	x+=getbits(j);
	cnt+=j;
        x+=getbits(j);
        cnt+=j;
      }
      if (x) {
	if (getbits(1)) x=-x;
	cnt++;
        if (getbits(1)) x=-x;
        cnt++;
      }
      if (y==15 && j>0) {
	y+=getbits(j);
	cnt+=j;
        y+=getbits(j);
        cnt+=j;
      }
      if (y) {
	if (getbits(1)) y=-y;
	cnt++;
        if (getbits(1)) y=-y;
        cnt++;
      }

      /*      if (SHOW_HUFFBITS) printf(" (%d,%d) %d\n",x,y, SHOW_HUFFBITS);*/
      is[ch][l]=x;
      is[ch][l+1]=y;
    }
  }
  /*if (cnt > info->part2_3_length[gr][ch] - ssize )
        if (SHOW_HUFFMAN_ERRORS) printf(" ERROR in BIGVALUES %d\n",\
	  cnt-info->part2_3_length[gr][ch]+ssize);*/
          cnt-info->part2_3_length[gr][ch]+ssize);*/
  while ((cnt < info->part2_3_length[gr][ch]-ssize) && (l<576)) {
    cnt+=huffman_decode(tr[3],&x,&y);
    cnt+=_qsign(x,q);
    for (i=0;i<4;i++) is[ch][l+i]=q[i]; /* ziher je ziher, is[578]*/
    l+=4;
    /*    if (SHOW_HUFFBITS) 
	  printf(" (%d,%d,%d,%d)\n",q[0],q[1],q[2],q[3]);*/
    /*    if (SHOW_HUFFBITS)
          printf(" (%d,%d,%d,%d)\n",q[0],q[1],q[2],q[3]);*/
  }
  /*
  if (SHOW_HUFFMAN_ERRORS) {
    if (cnt > info->part2_3_length[gr][ch] - ssize ) 
    if (cnt > info->part2_3_length[gr][ch] - ssize )
      printf ( "%d BITS DISCARDED\n",info->part2_3_length[gr][ch]-cnt+i-ssize);
    else if (cnt < info->part2_3_length[gr][ch] - ssize )
      printf(" %d BITS NOT USED\n",cnt-info->part2_3_length[gr][ch]+ssize);
      }*/
  /*  set position to start of the next gr/ch
   */
  if (cnt != info->part2_3_length[gr][ch] - ssize ) {
    data-=cnt-(info->part2_3_length[gr][ch] - ssize);
    data&= 8*BUFFER_SIZE - 1;
  }
  if (l<576) non_zero[ch]=l;
  else non_zero[ch]=576;
  /* zero out everything else
   */
  for (;l<576;l++) is[ch][l]=0;
  return 1;
}

/* 
/*
 * fras == Formula for Requantization and All Scaling **************************
 */
static float
fras_l(int sfb,int global_gain,int scalefac_scale,int scalefac,int preflag)
{
  int a,scale;
  if (scalefac_scale) scale=2;
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       */
      int window,window_len,preflag=0; /* pretab is all zero in this low frequency area */
      int scalefac=scalefac_l[gr][ch][0];

      l=0;sfb=0;
      a=fras_l(sfb,global_gain,scalefac_scale,scalefac,preflag);
      while (l<36) {
	xr[ch][0][l]=fras2(is[ch][l],a);
	if (l==t_l[sfb]) {
	  scalefac=scalefac_l[gr][ch][++sfb];
	  a=fras_l(sfb,global_gain,scalefac_scale,scalefac,preflag);
	}
	l++;
        xr[ch][0][l]=fras2(is[ch][l],a);
        if (l==t_l[sfb]) {
          scalefac=scalefac_l[gr][ch][++sfb];
          a=fras_l(sfb,global_gain,scalefac_scale,scalefac,preflag);
        }
        l++;
      }
      /*
       * requantize_mono - mixed blocks/short block part *********************
       */
      sfb=3; 
      sfb=3;
      window_len=t_s[sfb]-t_s[sfb-1];
      while (l<non_zero[ch]) {
	for (window=0;window<3;window++) {
	  int scalefac=scalefac_s[gr][ch][sfb][window];
	  int subblock_gain=info->subblock_gain[gr][ch][window];
	  a=fras_s(global_gain,subblock_gain,scalefac_scale,scalefac);
	  for (i=0;i<window_len;i++) {
	    xr[ch][0][t_reorder[header->ID][sfreq][l]]=fras2(is[ch][l],a);
	    l++;
	  }
	}
	sfb++;
	window_len=t_s[sfb]-t_s[sfb-1];
        for (window=0;window<3;window++) {
          int scalefac=scalefac_s[gr][ch][sfb][window];
          int subblock_gain=info->subblock_gain[gr][ch][window];
          a=fras_s(global_gain,subblock_gain,scalefac_scale,scalefac);
          for (i=0;i<window_len;i++) {
            xr[ch][0][t_reorder[header->ID][sfreq][l]]=fras2(is[ch][l],a);
            l++;
          }
        }
        sfb++;
        window_len=t_s[sfb]-t_s[sfb-1];
      }
      while (l<576) xr[ch][0][t_reorder[header->ID][sfreq][l++]]=0;
    } else {
      /*
       * requantize mono - short blocks **************************************
       */
      int window,window_len;

      sfb=0; l=0;
      window_len=t_s[0]+1;
      while (l<non_zero[ch]) {
	for (window=0;window<3;window++) {
	  int scalefac=scalefac_s[gr][ch][sfb][window];
	  int subblock_gain=info->subblock_gain[gr][ch][window];
	  float a=fras_s(global_gain,subblock_gain,scalefac_scale,scalefac);
	  for (i=0;i<window_len;i++) {
	    xr[ch][0][t_reorder[header->ID][sfreq][l]]=fras2(is[ch][l],a);
	    l++;
	  }
	}
	sfb++;
	window_len=t_s[sfb]-t_s[sfb-1];
        for (window=0;window<3;window++) {
          int scalefac=scalefac_s[gr][ch][sfb][window];
          int subblock_gain=info->subblock_gain[gr][ch][window];
          float a=fras_s(global_gain,subblock_gain,scalefac_scale,scalefac);
          for (i=0;i<window_len;i++) {
            xr[ch][0][t_reorder[header->ID][sfreq][l]]=fras2(is[ch][l],a);
            l++;
          }
        }
        sfb++;
        window_len=t_s[sfb]-t_s[sfb-1];
      }
      while (l<576) xr[ch][0][t_reorder[header->ID][sfreq][l++]]=0;
    }
  else {
    /* long blocks */
    int preflag=info->preflag[gr][ch];
    int scalefac=scalefac_l[gr][ch][0];

    sfb=0; l=0;
    a=fras_l(sfb,global_gain,scalefac_scale,scalefac,preflag);
    while (l<non_zero[ch]) {
      xr[ch][0][l]=fras2(is[ch][l],a); 
      xr[ch][0][l]=fras2(is[ch][l],a);
      if (l==t_l[sfb]) {
	scalefac=scalefac_l[gr][ch][++sfb];
	a=fras_l(sfb,global_gain,scalefac_scale,scalefac,preflag);
        scalefac=scalefac_l[gr][ch][++sfb];
        a=fras_l(sfb,global_gain,scalefac_scale,scalefac,preflag);
      }
      l++;
    }
    while (l<576) xr[ch][0][l++]=0;
  }
}

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    if (info->window_switching_flag[gr][0] && info->block_type[gr][0]==2) {

      /* find that isbound!
       */
      tmp=non_zero[1];
      sfb=0; while ((3*t_s[sfb]+2) < tmp  && sfb < 12) sfb++;
      while ((isbound[0]<0 || isbound[1]<0 || isbound[2]<0) && !(info->mixed_block_flag[gr][0] && sfb<3) && sfb) {
	for (window=0;window<3;window++) {
	  if (sfb==0) {
	    window_len=t_s[0]+1;
	    tmp=(window+1)*window_len - 1;
	  } else {
	    window_len=t_s[sfb]-t_s[sfb-1];
	    tmp=(3*t_s[sfb-1]+2) + (window+1)*window_len;
	  }
	  if (isbound[window] < 0)
	    for (i=0;i<window_len;i++)
	      if (is[1][tmp--] != 0) {
		isbound[window]=t_s[sfb]+1; 
		break;
	      }
	}
	sfb--;
        for (window=0;window<3;window++) {
          if (sfb==0) {
            window_len=t_s[0]+1;
            tmp=(window+1)*window_len - 1;
          } else {
            window_len=t_s[sfb]-t_s[sfb-1];
            tmp=(3*t_s[sfb-1]+2) + (window+1)*window_len;
          }
          if (isbound[window] < 0)
            for (i=0;i<window_len;i++)
              if (is[1][tmp--] != 0) {
                isbound[window]=t_s[sfb]+1;
                break;
              }
        }
        sfb--;
      }

      /* mixed block magic now...
       */
      if (sfb==2 && info->mixed_block_flag[gr][0]) {
	if (isbound[0]<0 && isbound[1]<0 && isbound[2]<0) {
	  tmp=35;
	  while (is[1][tmp] == 0) tmp--;
	  sfb=0; while (t_l[sfb] < tmp  && sfb < 21) sfb++;
	  isbound[0]=isbound[1]=isbound[2]=t_l[sfb]+1;
	} else for (window=0;window<3;window++) 
	  if (isbound[window]<0) isbound[window]=36;
        if (isbound[0]<0 && isbound[1]<0 && isbound[2]<0) {
          tmp=35;
          while (is[1][tmp] == 0) tmp--;
          sfb=0; while (t_l[sfb] < tmp  && sfb < 21) sfb++;
          isbound[0]=isbound[1]=isbound[2]=t_l[sfb]+1;
        } else for (window=0;window<3;window++)
          if (isbound[window]<0) isbound[window]=36;
      }
      if (header->ID==1) isbound[0]=isbound[1]=isbound[2]=max(isbound[0],max(isbound[1],isbound[2]));

      /* just how many imdcts?
       */
      tmp=non_zero[0];
      sfb=0; while ((3*t_s[sfb]+2) < tmp && sfb < 12) sfb++;
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  } else {

    /* intensity stereo is, regretably, turned off
     */
    ms_flag=1;

    /* i really put a lot of work in this, but it still looks like shit (works, though)
     */ 
    if (!info->window_switching_flag[gr][0] || (info->window_switching_flag[gr][0] && info->block_type[gr][0]!=2)) 
     */
    if (!info->window_switching_flag[gr][0] || (info->window_switching_flag[gr][0] && info->block_type[gr][0]!=2))
      isbound[0]=isbound[1]=isbound[2]=(max(non_zero[0],non_zero[1]));
    else isbound[0]=isbound[1]=isbound[2]=576;

    if (info->window_switching_flag[gr][0] && info->block_type[gr][0]==2) {
      /* should do for mixed blocks too, though i havent tested... */
      tmp=(max(non_zero[0],non_zero[1]))/3;
      sfb=0; while (t_s[sfb]<tmp && sfb<12) sfb++;
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  float ftmp,Mi,Si;
  if (l>=576) return;
  if ((is_pos != IS_ILLEGAL) && (header->ID==1)) {
    ftmp=fras2(is[0][l],a[0]);
    xr[0][0][l]=(1-t_is[is_pos])*ftmp;
    xr[1][0][l]=t_is[is_pos]*ftmp;
    return;
  } 
  }

  if ((is_pos != IS_ILLEGAL) && (header->ID==0)) {
    ftmp=fras2(is[0][l],a[0]);
    if (is_pos&1) {
      xr[0][0][l]= t_is2[intensity_scale][(is_pos+1)>>1] * ftmp;
      xr[1][0][l]= ftmp;
    } else {
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  int sfreq=header->sampling_frequency;
  int id = header->ID;
  float a[2];

  global_gain=info->global_gain[gr];
  scalefac_scale=info->scalefac_scale[gr];

  if (info->window_switching_flag[gr][0] && info->block_type[gr][0]==2)  
  if (info->window_switching_flag[gr][0] && info->block_type[gr][0]==2)
    if (info->mixed_block_flag[gr][0]) {
      /* 
      /*
       * mixed blocks w/stereo processing - long block part ******************
       */
      int window,window_len;
      int preflag[2]={0,0};

      ms_flag=find_isbound(isbound,gr,info,header);

      sfb=0; l=0;
      for (ch=0;ch<2;ch++) {
	scalefac[ch]=scalefac_l[gr][ch][0];
	a[ch]=fras_l(0,global_gain[ch],scalefac_scale[ch],scalefac[ch],preflag[ch]);
        scalefac[ch]=scalefac_l[gr][ch][0];
        a[ch]=fras_l(0,global_gain[ch],scalefac_scale[ch],scalefac[ch],preflag[ch]);
      }


      while (l<36) {
	int is_pos;
	if (l<isbound[0]) is_pos=IS_ILLEGAL;
	else {
	  is_pos=scalefac[1];
	  if (id==1) { /* MPEG1 */
	    if (is_pos==7) is_pos=IS_ILLEGAL;
	    else /* MPEG2 */
	      if (is_pos==is_max[sfb]) is_pos=IS_ILLEGAL;
	  }
	}
        int is_pos;
        if (l<isbound[0]) is_pos=IS_ILLEGAL;
        else {
          is_pos=scalefac[1];
          if (id==1) { /* MPEG1 */
            if (is_pos==7) is_pos=IS_ILLEGAL;
            else /* MPEG2 */
              if (is_pos==is_max[sfb]) is_pos=IS_ILLEGAL;
          }
        }

	stereo_l(l,a,ms_flag,is_pos,header);
        stereo_l(l,a,ms_flag,is_pos,header);

	if (l==t_l[sfb]) {
	  sfb++;
	  for (ch=0;ch<2;ch++) {
	    scalefac[ch]=scalefac_l[gr][ch][sfb];
	    a[ch]=fras_l(sfb,global_gain[ch],scalefac_scale[ch],scalefac[ch],preflag[ch]);
	  }
	}
        if (l==t_l[sfb]) {
          sfb++;
          for (ch=0;ch<2;ch++) {
            scalefac[ch]=scalefac_l[gr][ch][sfb];
            a[ch]=fras_l(sfb,global_gain[ch],scalefac_scale[ch],scalefac[ch],preflag[ch]);
          }
        }

	l++;
        l++;
      }
      /*
       * mixed blocks w/stereo processing - short block part *****************
       */
      sfb=3;
      window_len=t_s[sfb]-t_s[sfb-1];

      while (l<(max(non_zero[0],non_zero[1]))) {
	for (window=0;window<3;window++) {
	  subblock_gain[0]=info->subblock_gain[gr][0][window];
	  subblock_gain[1]=info->subblock_gain[gr][1][window];
	  scalefac[0]=scalefac_s[gr][0][sfb][window];
	  scalefac[1]=scalefac_s[gr][1][sfb][window];
        for (window=0;window<3;window++) {
          subblock_gain[0]=info->subblock_gain[gr][0][window];
          subblock_gain[1]=info->subblock_gain[gr][1][window];
          scalefac[0]=scalefac_s[gr][0][sfb][window];
          scalefac[1]=scalefac_s[gr][1][sfb][window];

	  if (t_s[sfb] < isbound[window]) {
	    is_pos=IS_ILLEGAL;
	    a[0]=fras_s(global_gain[0],subblock_gain[0],scalefac_scale[0],scalefac[0]);
	    a[1]=fras_s(global_gain[1],subblock_gain[1],scalefac_scale[1],scalefac[1]);
	  } else {
	    is_pos=scalefac[1];
	    if (id==1) { /* MPEG1 */
	      if (is_pos==7) is_pos=IS_ILLEGAL;
	      else /* MPEG2 */
		if (is_pos==is_max[sfb+6]) is_pos=IS_ILLEGAL;
	    }
 
	    a[0]=fras_s(global_gain[0],subblock_gain[0],scalefac_scale[0],scalefac[0]);
	  }
          if (t_s[sfb] < isbound[window]) {
            is_pos=IS_ILLEGAL;
            a[0]=fras_s(global_gain[0],subblock_gain[0],scalefac_scale[0],scalefac[0]);
            a[1]=fras_s(global_gain[1],subblock_gain[1],scalefac_scale[1],scalefac[1]);
          } else {
            is_pos=scalefac[1];
            if (id==1) { /* MPEG1 */
              if (is_pos==7) is_pos=IS_ILLEGAL;
              else /* MPEG2 */
                if (is_pos==is_max[sfb+6]) is_pos=IS_ILLEGAL;
            }

            a[0]=fras_s(global_gain[0],subblock_gain[0],scalefac_scale[0],scalefac[0]);
          }

	  for (i=0;i<window_len && l < 576;i++) {
	    stereo_s(l,a,t_reorder[id][sfreq][l],ms_flag,is_pos,header);
	    l++;
	  }
	}
	sfb++;
	window_len=t_s[sfb]-t_s[sfb-1];
          for (i=0;i<window_len && l < 576;i++) {
            stereo_s(l,a,t_reorder[id][sfreq][l],ms_flag,is_pos,header);
            l++;
          }
        }
        sfb++;
        window_len=t_s[sfb]-t_s[sfb-1];
      }
      while (l<576) {
	int reorder = t_reorder[id][sfreq][l++];
                          
	xr[0][0][reorder]=xr[1][0][reorder]=0;
        int reorder = t_reorder[id][sfreq][l++];

        xr[0][0][reorder]=xr[1][0][reorder]=0;
      }
    } else {                                                                       
    } else {
      /*
       * requantize_ms - short blocks w/stereo processing ********************
       */
      int window,window_len;

      ms_flag=find_isbound(isbound,gr,info,header);
      sfb=0; l=0;
      window_len=t_s[0]+1;

      while (l<(max(non_zero[0],non_zero[1]))) {
	for (window=0;window<3;window++) {
	  subblock_gain[0]=info->subblock_gain[gr][0][window];
	  subblock_gain[1]=info->subblock_gain[gr][1][window];
	  scalefac[0]=scalefac_s[gr][0][sfb][window];
	  scalefac[1]=scalefac_s[gr][1][sfb][window];
        for (window=0;window<3;window++) {
          subblock_gain[0]=info->subblock_gain[gr][0][window];
          subblock_gain[1]=info->subblock_gain[gr][1][window];
          scalefac[0]=scalefac_s[gr][0][sfb][window];
          scalefac[1]=scalefac_s[gr][1][sfb][window];

	  if (t_s[sfb] < isbound[window]) {
	    is_pos=IS_ILLEGAL;
	    a[0]=fras_s(global_gain[0],subblock_gain[0],scalefac_scale[0],scalefac[0]);
	    a[1]=fras_s(global_gain[1],subblock_gain[1],scalefac_scale[1],scalefac[1]);
	  } else {
	    is_pos=scalefac[1];
	    if (id==1) { /* MPEG1 */
	      if (is_pos==7) is_pos=IS_ILLEGAL;
	      else /* MPEG2 */
		if (is_pos==is_max[sfb+6]) is_pos=IS_ILLEGAL;
	    }
          if (t_s[sfb] < isbound[window]) {
            is_pos=IS_ILLEGAL;
            a[0]=fras_s(global_gain[0],subblock_gain[0],scalefac_scale[0],scalefac[0]);
            a[1]=fras_s(global_gain[1],subblock_gain[1],scalefac_scale[1],scalefac[1]);
          } else {
            is_pos=scalefac[1];
            if (id==1) { /* MPEG1 */
              if (is_pos==7) is_pos=IS_ILLEGAL;
              else /* MPEG2 */
                if (is_pos==is_max[sfb+6]) is_pos=IS_ILLEGAL;
            }

	    a[0]=fras_s(global_gain[0],subblock_gain[0],scalefac_scale[0],scalefac[0]);
	  }
            a[0]=fras_s(global_gain[0],subblock_gain[0],scalefac_scale[0],scalefac[0]);
          }

	  for (i=0;i<window_len && l < 576;i++) {
	    stereo_s(l,a,t_reorder[id][sfreq][l],ms_flag,is_pos,header);
	    l++;
	  }
	}
	window_len=-t_s[sfb]+t_s[++sfb];
          for (i=0;i<window_len && l < 576;i++) {
            stereo_s(l,a,t_reorder[id][sfreq][l],ms_flag,is_pos,header);
            l++;
          }
        }
        window_len=-t_s[sfb]+t_s[sfb+1];
        sfb++;
      }
      while (l<576) {
	int reorder = t_reorder[id][sfreq][l++];
                          
	xr[0][0][reorder]=xr[1][0][reorder]=0;
        int reorder = t_reorder[id][sfreq][l++];

        xr[0][0][reorder]=xr[1][0][reorder]=0;
      }
    }
  else {
    /*
     * long blocks w/stereo processing *************************************
     */
    int *preflag=info->preflag[gr];

    ms_flag=find_isbound(isbound,gr,info,header);

    sfb=0; l=0;
    scalefac[0]=scalefac_l[gr][0][sfb];
    a[0]=fras_l(sfb,global_gain[0],scalefac_scale[0],scalefac[0],preflag[0]);
    scalefac[1]=scalefac_l[gr][1][sfb];
    a[1]=fras_l(sfb,global_gain[1],scalefac_scale[1],scalefac[1],preflag[1]);
    while (l< isbound[0]) {   
    while (l< isbound[0]) {
      int is_pos=IS_ILLEGAL;
      stereo_l(l,a,ms_flag,is_pos,header);
      if (l==t_l[sfb]) {
	sfb++;
	scalefac[0]=scalefac_l[gr][0][sfb];
	a[0]=fras_l(sfb,global_gain[0],scalefac_scale[0],scalefac[0],preflag[0]);
	scalefac[1]=scalefac_l[gr][1][sfb];
	a[1]=fras_l(sfb,global_gain[1],scalefac_scale[1],scalefac[1],preflag[1]);
        sfb++;
        scalefac[0]=scalefac_l[gr][0][sfb];
        a[0]=fras_l(sfb,global_gain[0],scalefac_scale[0],scalefac[0],preflag[0]);
        scalefac[1]=scalefac_l[gr][1][sfb];
        a[1]=fras_l(sfb,global_gain[1],scalefac_scale[1],scalefac[1],preflag[1]);
      }
      l++;
    }
    while (l<(max(non_zero[0],non_zero[1]))) {
      int is_pos=scalefac[1];
      if (id==1) { /* MPEG1 */
	if (is_pos==7) is_pos=IS_ILLEGAL;
	else /* MPEG2 */
	  if (is_pos==is_max[sfb]) is_pos=IS_ILLEGAL;
        if (is_pos==7) is_pos=IS_ILLEGAL;
        else /* MPEG2 */
          if (is_pos==is_max[sfb]) is_pos=IS_ILLEGAL;
      }

      stereo_l(l,a,ms_flag,is_pos,header);
      if (l==t_l[sfb]) {
	sfb++;
	scalefac[0]=scalefac_l[gr][0][sfb];
	scalefac[1]=scalefac_l[gr][1][sfb];
	a[0]=fras_l(sfb,global_gain[0],scalefac_scale[0],scalefac[0],preflag[0]);
        sfb++;
        scalefac[0]=scalefac_l[gr][0][sfb];
        scalefac[1]=scalefac_l[gr][1][sfb];
        a[0]=fras_l(sfb,global_gain[0],scalefac_scale[0],scalefac[0],preflag[0]);
      }
      l++;
    }
    while (l<576) {
      xr[0][0][l]=0;
      xr[1][0][l]=0;
      l++;
    }
  }
}

#ifdef WIN
#pragma optimize("", on)
#endif

/* 
/*
 * antialiasing butterflies
 * 
 *
 */
static void
alias_reduction(int ch)
{
  int sb,i;

  for (sb=1;sb<32;sb++) {
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  /* check for an immediate hit, so we can decode those short codes very f
     ast
     */
  if ((*h_tab>>(32-len)) != (chunk>>(19-len))) {
    if (chunk >> (19-NC_O) < N_CUE-1)
      lag=(h_cue[tbl][(chunk >> (19-NC_O))+1] -
	   h_cue[tbl][chunk >> (19-NC_O)]);
           h_cue[tbl][chunk >> (19-NC_O)]);
    else {
      /* we strongly depend on h_cue[N_CUE-1] to point to
       * the last entry in the huffman table, so we should
       * not get here anyway. if it didn't, we'd have to
       * have another table with huffman tables lengths, and
       * it would be a mess. just in case, scream&shout.
       */ 
       */
      /*      printf(" h_cue clobbered. this is a bug. blip.\n");*/
      exit (-1);
    }
    chunk <<= 32-19;
    chunk |= 0x1ff;

    half_lag = lag >> 1;

    h_tab += half_lag;
    lag -= half_lag;

    while (lag > 1) {
      half_lag = lag >> 1;

      if (*h_tab < chunk)
	h_tab += half_lag;
        h_tab += half_lag;
      else
	h_tab -= half_lag;
        h_tab -= half_lag;

      lag -= half_lag;
    }

    len=(*h_tab>>8)&0x1f;
    if ((*h_tab>>(32-len)) != (chunk>>(32-len))) {
      if (*h_tab > chunk)
	h_tab--;
      else 
	h_tab++;
                  
        h_tab--;
      else
        h_tab++;

      len=(*h_tab>>8)&0x1f;
    }
  }
  sackbits(len);
  *x=(*h_tab>>4)&0xf;
  *y=*h_tab&0xf;
  return len;
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  float *in = xr[ch][sb];
  float out[36];


  if(win_type == 2){
    for(p=0;p<36;p+=9) {
      out[p]   = out[p+1] = out[p+2] = out[p+3] =
	out[p+4] = out[p+5] = out[p+6] = out[p+7] =
	out[p+8] = 0.0f;
        out[p+4] = out[p+5] = out[p+6] = out[p+7] =
        out[p+8] = 0.0f;
    }

    for(ss=0;ss<18;ss+=6) {

      /*
       *  12 point IMDCT
       */

      /* Begin 12 point IDCT */

      /* Input aliasing for 12 pt IDCT*/
				      in[5+ss]+=in[4+ss];in[4+ss]+=in[3+ss];in[3+ss]+=in[2+ss];
				      in[2+ss]+=in[1+ss];in[1+ss]+=in[0+ss];
                                      in[5+ss]+=in[4+ss];in[4+ss]+=in[3+ss];in[3+ss]+=in[2+ss];
                                      in[2+ss]+=in[1+ss];in[1+ss]+=in[0+ss];

				      /* Input aliasing on odd indices (for 6 point IDCT) */
					   in[5+ss] += in[3+ss];  in[3+ss]  += in[1+ss];
                                      /* Input aliasing on odd indices (for 6 point IDCT) */
                                           in[5+ss] += in[3+ss];  in[3+ss]  += in[1+ss];

					   /* 3 point IDCT on even indices */
                                           /* 3 point IDCT on even indices */

						pp2 = in[4+ss] * 0.500000000f;
					   pp1 = in[2+ss] * 0.866025403f;
					   sum = in[0+ss] + pp2;
					   tmp[1]= in[0+ss] - in[4+ss];
					   tmp[0]= sum + pp1;
					   tmp[2]= sum - pp1;
                                                pp2 = in[4+ss] * 0.500000000f;
                                           pp1 = in[2+ss] * 0.866025403f;
                                           sum = in[0+ss] + pp2;
                                           tmp[1]= in[0+ss] - in[4+ss];
                                           tmp[0]= sum + pp1;
                                           tmp[2]= sum - pp1;

					   /* End 3 point IDCT on even indices */
                                           /* End 3 point IDCT on even indices */

					   /* 3 point IDCT on odd indices (for 6 point IDCT) */
                                           /* 3 point IDCT on odd indices (for 6 point IDCT) */

						pp2 = in[5+ss] * 0.500000000f;
					   pp1 = in[3+ss] * 0.866025403f;
					   sum = in[1+ss] + pp2;
					   tmp[4] = in[1+ss] - in[5+ss];
					   tmp[5] = sum + pp1;
					   tmp[3] = sum - pp1;
                                                pp2 = in[5+ss] * 0.500000000f;
                                           pp1 = in[3+ss] * 0.866025403f;
                                           sum = in[1+ss] + pp2;
                                           tmp[4] = in[1+ss] - in[5+ss];
                                           tmp[5] = sum + pp1;
                                           tmp[3] = sum - pp1;

					   /* End 3 point IDCT on odd indices*/
                                           /* End 3 point IDCT on odd indices*/

					   /* Twiddle factors on odd indices (for 6 point IDCT)*/
                                           /* Twiddle factors on odd indices (for 6 point IDCT)*/

						tmp[3] *= 1.931851653f;
					   tmp[4] *= 0.707106781f;
					   tmp[5] *= 0.517638090f;
                                                tmp[3] *= 1.931851653f;
                                           tmp[4] *= 0.707106781f;
                                           tmp[5] *= 0.517638090f;

					   /* Output butterflies on 2 3 point IDCT's (for 6 point IDCT)*/
                                           /* Output butterflies on 2 3 point IDCT's (for 6 point IDCT)*/

save = tmp[0];
tmp[0] += tmp[5];
tmp[5] = save - tmp[5];
save = tmp[1];
tmp[1] += tmp[4];
tmp[4] = save - tmp[4];
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res[sb][2] =-tmp[11] * win_bt[2] + s[ch][sb][2];
res[sb][3] =-tmp[12] * win_bt[3] + s[ch][sb][3];
res[sb][4] =-tmp[13] * win_bt[4] + s[ch][sb][4];
res[sb][5] =-tmp[14] * win_bt[5] + s[ch][sb][5];
res[sb][6] =-tmp[15] * win_bt[6] + s[ch][sb][6];
res[sb][7] =-tmp[16] * win_bt[7] + s[ch][sb][7];
res[sb][8] =-tmp[17] * win_bt[8] + s[ch][sb][8];
           

res[sb][9] = tmp[17] * win_bt[9] + s[ch][sb][9];
res[sb][10]= tmp[16] * win_bt[10] + s[ch][sb][10];
res[sb][11]= tmp[15] * win_bt[11] + s[ch][sb][11];
res[sb][12]= tmp[14] * win_bt[12] + s[ch][sb][12];
res[sb][13]= tmp[13] * win_bt[13] + s[ch][sb][13];
res[sb][14]= tmp[12] * win_bt[14] + s[ch][sb][14];
res[sb][15]= tmp[11] * win_bt[15] + s[ch][sb][15];
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}

if (sb&1) for (i=1;i<18;i+=2) res[sb][i]=-res[sb][i];
}

/* fast DCT according to Lee[84]
 * reordering according to Konstantinides[94]
 */ 
 */
void poly(mp3Info* ext, const int ch,int f)
{
float c0,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,c15;
float c16,c17,c18,c19,c20,c21,c22,c23,c24,c25,c26,c27,c28,c29,c30,c31;
float d0,d1,d2,d3,d4,d5,d6,d7,d8,d9,d10,d11,d12,d13,d14,d15;
float d16,d17,d18,d19,d20,d21,d22,d23,d24,d25,d26,d27,d28,d29,d30,d31;
int start = ext->u_start[ch];
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d10= c10+ c14; d14= (c10 - c14) * b28;
d11= c11+ c15; d15= (c11 - c15) * b20;

d16= c16+ c20; d20= (c16 - c20) *  b4;
d17= c17+ c21; d21= (c17 - c21) * b12;
d18= c18+ c22; d22= (c18 - c22) * b28;
d19= c19+ c23; d23= (c19 - c23) * b20;
        

d24= c24+ c28; d28= (c24 - c28) *  b4;
d25= c25+ c29; d29= (c25 - c29) * b12;
d26= c26+ c30; d30= (c26 - c30) * b28;
d27= c27+ c31; d31= (c27 - c31) * b20;

/* step 4: 2-wide butterflies
 */
/**/    c0 = d0 + d2 ; c2 = ( d0 - d2 ) *  b8;
c1 = d1 + d3 ; c3 = ( d1 - d3 ) * b24;
/**/    c4 = d4 + d6 ; c6 = ( d4 - d6 ) *  b8;
c5 = d5 + d7 ; c7 = ( d5 - d7 ) * b24;
/**/    c8 = d8 + d10; c10= ( d8 - d10) *  b8;
c9 = d9 + d11; c11= ( d9 - d11) * b24;
/**/    c12= d12+ d14; c14= (d12 - d14) *  b8;
c13= d13+ d15; c15= (d13 - d15) * b24;
/**/    c16= d16+ d18; c18= (d16 - d18) *  b8;
c17= d17+ d19; c19= (d17 - d19) * b24; 
c17= d17+ d19; c19= (d17 - d19) * b24;
/**/    c20= d20+ d22; c22= (d20 - d22) *  b8;
c21= d21+ d23; c23= (d21 - d23) * b24; 
c21= d21+ d23; c23= (d21 - d23) * b24;
/**/    c24= d24+ d26; c26= (d24 - d26) *  b8;
c25= d25+ d27; c27= (d25 - d27) * b24; 
c25= d25+ d27; c27= (d25 - d27) * b24;
/**/    c28= d28+ d30; c30= (d28 - d30) *  b8;
c29= d29+ d31; c31= (d29 - d31) * b24; 
 
c29= d29+ d31; c31= (d29 - d31) * b24;

/* step 5: 1-wide butterflies
 */
d0 = c0 + c1 ; d1 = ( c0 - c1 ) * b16;
d2 = c2 + c3 ; d3 = ( c2 - c3 ) * b16;
d4 = c4 + c5 ; d5 = ( c4 - c5 ) * b16;
d6 = c6 + c7 ; d7 = ( c6 - c7 ) * b16;
d8 = c8 + c9 ; d9 = ( c8 - c9 ) * b16;
d10= c10+ c11; d11= (c10 - c11) * b16;
d12= c12+ c13; d13= (c12 - c13) * b16;
d14= c14+ c15; d15= (c14 - c15) * b16;
d16= c16+ c17; d17= (c16 - c17) * b16;
d18= c18+ c19; d19= (c18 - c19) * b16;
d20= c20+ c21; d21= (c20 - c21) * b16;
d22= c22+ c23; d23= (c22 - c23) * b16;
d24= c24+ c25; d25= (c24 - c25) * b16;
d26= c26+ c27; d27= (c26 - c27) * b16;
d28= c28+ c29; d29= (c28 - c29) * b16;
d30= c30+ c31; d31= (c30 - c31) * b16;
 
/* step 6: final resolving & reordering 

/* step 6: final resolving & reordering
 * the other 32 are stored for use with the next granule
 */

u_p = (float (*)[16]) &ext->u[ch][div][0][start];

/*16*/                 u_p[0][0] =+d1 ;
u_p[31][0] = -(u_p[1][0] =+d16 +d17 +d18 +d22 -d30);
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2391
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2395
2396

2397
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2399
2400
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2403
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2419
















2420
2421

2422
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2430
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2447
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2455
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2472
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2474
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2480
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2486
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2488
2489
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2497
2498

2499
2500
2501
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2504

2505
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2522
2523

2524
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2530
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2547
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2549
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2555
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2572
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2580
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2597
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2605
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2622
2623

2624
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2630

2631
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2634
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2641
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2646
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2650
















2651
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2653


2654
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1782
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1784
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1789
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1800
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1814
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1826
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1828
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1830

1831
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1839
1840
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1853
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1855

1856
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1864
1865
1866
1867
1868
1869
1870
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1874
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1876
1877
1878
1879
1880

1881
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1887
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1889
1890
1891
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1895
1896
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1898
1899
1900
1901
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1906
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1911

1912
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1914
1915
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1917
1918
1919
1920
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1922
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1924
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1928
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1930

1931
1932
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1934
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1937
1938
















1939
1940
1941
1942
1943
1944
1945
1946
1947
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1951
1952
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1956
1957
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1964
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1971
1972
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1974
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1976
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1978
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1980

1981
1982
1983
1984
1985
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1988

1989
1990
















1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007

2008
2009
2010
2011
2012
2013

2014
2015
















2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032

2033
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2041
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2066
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2078
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2091
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2100
2101
2102
2103
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2105
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2107

2108
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2110
2111
2112
2113

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2115
















2116
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2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132

2133
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2138

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2140
















2141
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2157

2158
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2160
2161
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2165
















2166
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2168
2169
2170
2171
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2173
2174
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2176
2177
2178
2179
2180
2181
2182

2183
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2185
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2187
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2189

2190
2191


2192
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2194
















2195
2196
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2202
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2209
2210
2211


2212
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2228
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2240
2241
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2250

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2253
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2255
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2257
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2260
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2278
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2303
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2320
2321
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2325

2326
2327
















2328
2329
2330
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2353
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2370
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2378
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2403
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2430
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2455
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2472
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2480
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2500
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2505
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2521

2522
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2530
2531
2532
2533
2534
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2541
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2544
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2547
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2555
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2565
2566
2567
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2569
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2572
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2580
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2605
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2617
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2622
2623
2624
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2626
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2628

2629
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2631
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2634
2635
2636
2637
2638
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2641
2642
2643
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2648
2649
2650


2651
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2655
2656
2657
2658
2659







-
-
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-
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-
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-
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-
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+

-
+






-
+

-
-
+
+

-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

-
-
+
+








    switch (start) {
#if !defined(MEDIUM_STEREO_CACHE) && !defined(SMALL_STEREO_CACHE)
    case 0:
      u_ptr = (float *) u_p;

      for (j=0;j<32;j++) {
	out  = *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
        out  = *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 1:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
        out  = u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ?-32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ?-32768.0f : out;
      }
      break;

    case 2:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
        out  = u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 3:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
        out  = u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 4:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
        out  = u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 5:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
        out  = u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 6:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
        out  = u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 7:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
        out  = u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

#endif
#if !defined(SMALL_STEREO_CACHE)
    case 8:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
        out  = u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 9:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
        out  = u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 10:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
        out  = u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 11:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
        out  = u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 12:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
        out  = u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 13:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
        out  = u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 14:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
        out  = u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 15:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
        out  = u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;

	stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;
#endif
#if defined(MEDIUM_STEREO_CACHE) || defined(SMALL_STEREO_CACHE)
    default:
      {
	int i=start;
        int i=start;

	for (j=0;j<32;j++) {
	  u_ptr = u_p[j];
        for (j=0;j<32;j++) {
          u_ptr = u_p[j];

	  out  = u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
          out  = u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;

	  stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
	}
          stereo_samples[f][j][ch] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        }
      }
      break;
#endif
    }

    ext->u_start[ch] = (ext->u_start[ch]-1)&0xf;
    ext->u_div[ch] = ext->u_div[ch] ? 0 : 1;
  } else {
    switch (start) {
#if !defined(MEDIUM_MONO_CACHE) && !defined(SMALL_MONO_CACHE)
    case 0:
      u_ptr = (float *) u_p;

      for (j=0;j<32;j++) {
	out  = *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	out += *u_ptr++ * *dewindow++;
	
	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        out  = *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;
        out += *u_ptr++ * *dewindow++;

        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 1:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
        out  = u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 2:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
        out  = u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 3:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
        out  = u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 4:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
        out  = u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 5:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
        out  = u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 6:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
        out  = u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 7:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
        out  = u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

#endif
#if !defined(SMALL_MONO_CACHE)
    case 8:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
        out  = u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 9:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
        out  = u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 10:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
        out  = u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 11:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
        out  = u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 12:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
        out  = u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 13:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
        out  = u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 14:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[14] * *dewindow++;
	out += u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
        out  = u_ptr[14] * *dewindow++;
        out += u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;

    case 15:
      for (j=0;j<32;j++) {
	u_ptr = u_p[j];
        u_ptr = u_p[j];

	out  = u_ptr[15] * *dewindow++;
	out += u_ptr[0] * *dewindow++;
	out += u_ptr[1] * *dewindow++;
	out += u_ptr[2] * *dewindow++;
	out += u_ptr[3] * *dewindow++;
	out += u_ptr[4] * *dewindow++;
	out += u_ptr[5] * *dewindow++;
	out += u_ptr[6] * *dewindow++;
	out += u_ptr[7] * *dewindow++;
	out += u_ptr[8] * *dewindow++;
	out += u_ptr[9] * *dewindow++;
	out += u_ptr[10] * *dewindow++;
	out += u_ptr[11] * *dewindow++;
	out += u_ptr[12] * *dewindow++;
	out += u_ptr[13] * *dewindow++;
	out += u_ptr[14] * *dewindow++;
        out  = u_ptr[15] * *dewindow++;
        out += u_ptr[0] * *dewindow++;
        out += u_ptr[1] * *dewindow++;
        out += u_ptr[2] * *dewindow++;
        out += u_ptr[3] * *dewindow++;
        out += u_ptr[4] * *dewindow++;
        out += u_ptr[5] * *dewindow++;
        out += u_ptr[6] * *dewindow++;
        out += u_ptr[7] * *dewindow++;
        out += u_ptr[8] * *dewindow++;
        out += u_ptr[9] * *dewindow++;
        out += u_ptr[10] * *dewindow++;
        out += u_ptr[11] * *dewindow++;
        out += u_ptr[12] * *dewindow++;
        out += u_ptr[13] * *dewindow++;
        out += u_ptr[14] * *dewindow++;

	mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
      }
      break;
#endif
#if defined(MEDIUM_MONO_CACHE) || defined(SMALL_MONO_CACHE)
    default:
      {
	int i=start;
        int i=start;

	for (j=0;j<32;j++) {
	  u_ptr = u_p[j];
        for (j=0;j<32;j++) {
          u_ptr = u_p[j];

	  out  = u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
	  out += u_ptr[i++ & 0xf] * *dewindow++;
          out  = u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;
          out += u_ptr[i++ & 0xf] * *dewindow++;

	  mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
	}
          mono_samples[f][j] = out > 32767.0f ? 32767.0f : out < -32768.0f ? -32768.0f : out;
        }
      }
      break;
#endif
    }

    ext->u_start[0] = (ext->u_start[0]-1)&0xf;
    ext->u_div[0] = ext->u_div[0] ? 0 : 1;
2684
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2690
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2697







-
+







  int gr,ch,sb,i,tmp;
  int mean_frame_size,bitrate,fs,hsize,ssize;
  int cnt = ext->cnt;
  char *rest = (char *) ext->rest;

  /* we need these later, hsize is the size of header+side_info */

  if (header->ID) 
  if (header->ID)
    if (header->mode==3) {
      nch=1;
      hsize=21;
    } else {
      nch=2;
      hsize=36;
    }
2720
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2728
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2726
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2733







-
+







  fs=t_sampling_frequency[header->ID][header->sampling_frequency];
  if (header->ID) mean_frame_size=144000*bitrate/fs;
  else mean_frame_size=72000*bitrate/fs;

  /* check if mdb is too big for the first few frames. this means that
   * a part of the stream could be missing. We must still fill the buffer
   */
  if (info.main_data_begin > append) 
  if (info.main_data_begin > append)
    if (cnt*mean_frame_size < 960) {
      /*printf(" frame %d discarded, incomplete main_data\n",cnt);*/
      fillbfr(mean_frame_size + header->padding_bit - hsize);
      return 0;
    }


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  t_l=&t_b8_l[header->ID][header->sampling_frequency][0];
  t_s=&t_b8_s[header->ID][header->sampling_frequency][0];

  /* debug/dump stuff */
  /*  show_header(header,bitrate,fs,mean_frame_size,0);*/
  /*if (A_DUMP_BINARY) dump((int *)info.part2_3_length);*/
  

  /* decode the scalefactors and huffman data
   * this part needs to be enhanced for error robustness
   */
  for (gr=0;gr < ((header->ID) ? 2 : 1);gr++) {
    for (ch=0;ch<nch;ch++) {
      /*       show_side_info(&info,gr,ch,0);*/ /* this is for debug/dump */
      ssize=decode_scalefactors(&info,header,gr,ch);
      decode_huffman_data(&info,gr,ch,ssize);
    }

    /* requantization, stereo processing, reordering(shortbl) */
    if (header->mode!=1 || (header->mode==1 && header->mode_extension==0))
      for (ch=0;ch<nch;ch++) requantize_mono(gr,ch,&info,header);
    else requantize_ms(gr,&info,header);

    /* antialiasing butterflies */
    for (ch=0;ch<nch;ch++) {
      if(!(info.window_switching_flag[gr][ch] && info.block_type[gr][ch]==2))
	alias_reduction(ch);
        alias_reduction(ch);
    }

    /* just which window? */
    for (ch=0;ch<nch;ch++) {
      int win_type; /* same as in the standard, long=0, start=1 ,.... */

      if (info.window_switching_flag[gr][ch] && info.block_type[gr][ch]==2 && info.mixed_block_flag[gr][ch])
	win_type=0;
        win_type=0;
      else if (!info.window_switching_flag[gr][ch]) win_type=0;
      else win_type=info.block_type[gr][ch];

      /* imdct ...  */

      for (sb=0;sb<2;sb++)
	imdct(win_type,sb,ch);
        imdct(win_type,sb,ch);

      if (info.window_switching_flag[gr][ch] && info.block_type[gr][ch]==2 && info.mixed_block_flag[gr][ch])
	win_type=2;
        win_type=2;

      /* no_of_imdcts tells us how many subbands from the top are all zero
       * it is set by the requantize functions in misc2.c
       */
      for (sb=2;sb<no_of_imdcts[ch];sb++)
	imdct(win_type,sb,ch);
        imdct(win_type,sb,ch);

      /* clear s[][][] first so we don't totally blow the cache */

      tmp = sb;
      for (;sb<32;sb++) 
	for (i=0;i<18;i++) {
	  res[sb][i]=s[ch][sb][i];
	  s[ch][sb][i]=0.0f;
	}
	
      for (;sb<32;sb++)
        for (i=0;i<18;i++) {
          res[sb][i]=s[ch][sb][i];
          s[ch][sb][i]=0.0f;
        }

      /* polyphase filterbank
       */
      /* if (nch == 2) this was a bug, tomislav */
      for (i=0;i<18;i++)
	poly(ext, ch, i);
        poly(ext, ch, i);
    }
    if (nch == 2) {
      int l = min(18*32*2*4, len - ext->ind);
      memcpy(&mm[ext->ind], stereo_samples, l);
      ext->ind += l;
      if (l < 18*32*2*4) {
	memcpy(&rest[ext->restlen],
	       &((char *)stereo_samples)[l], 18*32*2*4 - l);
	ext->restlen += (18*32*2*4 - l);
        memcpy(&rest[ext->restlen],
               &((char *)stereo_samples)[l], 18*32*2*4 - l);
        ext->restlen += (18*32*2*4 - l);
      }
    } else {
      int l = min(18*32*4, len - ext->ind);
      memcpy(&mm[ext->ind], mono_samples, l);
      ext->ind += l;
      if (l < 18*32*4) {
	memcpy(&rest[ext->restlen],
	       &((char *)mono_samples)[l], 18*32*4 - l);
	ext->restlen += (18*32*4 - l);
        memcpy(&rest[ext->restlen],
               &((char *)mono_samples)[l], 18*32*4 - l);
        ext->restlen += (18*32*4 - l);
      }
    }
  }    /*  for (gr... */ 
  }    /*  for (gr... */

  return 0;

} 
}

static int
processHeader(Sound *s, struct AUDIO_HEADER *header, int cnt)
{
  int g;
  mp3Info *Si = (mp3Info *)s->extHead;

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  }
  Si->gotHeader = 0;

  while ((g=gethdr(header))!=0) {
    if (_fillbfr(4) <= 0) return(1);
  }
  if (header->protection_bit==0) getcrc();
  

  return(0);
}

#define MAXFRAMESIZE 2106  /* frame size starting at header */
#define MAXSCANDEPTH 60000 /* How deep to scan into file to find first frame, assume bad after this */
#define MAXSCANDEPTH 65536 /* How deep to scan into file to find first frame, assume bad after this */
/* Define a mask such that a seek frame has to match the original frame
   some data changes from frame to frame so ignore those changes
   at a minimum the
   frame sync
   ID/Layer/Protection Bit
*/
/*#define HMASK 0xfffffddf*/
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    return(NULL);
  }

  depth = min(MAXSCANDEPTH,len);
  while (offset <= depth - 4) {
    /* Validate frame sync and other data to make sure this is a good header */
    if ((buf[offset]   & 0xff) == 0xff && (buf[offset+1] & 0xe0) == 0xe0 &&
	(buf[offset+2] & 0x0c) != 0x0c && (buf[offset+2] & 0xf0) != 0x00 &&
	(buf[offset+2] & 0xf0) != 0xf0 && (buf[offset+1] & 0x06) != 0x00) {
        (buf[offset+2] & 0x0c) != 0x0c && (buf[offset+2] & 0xf0) != 0x00 &&
        (buf[offset+2] & 0xf0) != 0xf0 && (buf[offset+1] & 0x06) != 0x00) {
      int layer = (buf[offset+1] & 0x06) >> 1;
      int br_index = (buf[offset+2] & 0xf0) >> 4;
      int sr_index = (buf[offset+2] & 0x0c) >> 2;
      int id = (buf[offset+1] & 0x08) >> 3;
      int bitrate = t_bitrate[id][3 - layer][br_index];
      int fs = t_sampling_frequency[id][sr_index];
      int mean_frame_size;
      

      if (id) mean_frame_size = 144000 * bitrate / fs;
      else mean_frame_size = 72000 * bitrate / fs;
      

      if (mean_frame_size > MAXFRAMESIZE) {
	mean_frame_size = MAXFRAMESIZE;
        mean_frame_size = MAXFRAMESIZE;
      }
      

      if (offset == 0 || offset == 72) {
	return(MP3_STRING);
        return(MP3_STRING);
      }
      if (offset + mean_frame_size + 4 >= len && len > 1000) {
	return(NULL);
        return(NULL);
      }

      /* A valid MP3 should have a header at the next location, 
	 and they should nearly match (sync + ID/Layer/Pro bit 
	 just to make sure we need two additional matches.
      /* A valid MP3 should have a header at the next location,
         and they should nearly match (sync + ID/Layer/Pro bit
         just to make sure we need two additional matches.
      */
      p = &buf[offset];
      q = p + mean_frame_size;
      if (p[0] == q[0] && p[1] == q[1]) {
	matches++;
	/* Require at least three frames have this kind of match */
	if (matches > 2) {
	  return(MP3_STRING);
	}
        matches++;
        /* Require at least three frames have this kind of match */
        if (matches > 2) {
          return(MP3_STRING);
        }
      }
    }
    offset++;
  }
  if (offset < 1000) {
  if (offset < 1001) {
    return(QUE_STRING);
  } else {
    return(NULL);
  }
}

static int initDone = 0;

static void
InitMP3()
{
  premultiply();
  imdct_init();
}

extern struct Snack_FileFormat *snackFileFormats;

#define SNACK_MP3_INT 18
static int ExtractI4(unsigned char *buf)
{
   int x;
   /*  big endian extract  */
   x = buf[0];
   x <<= 8;
   x |= buf[1];
   x <<= 8;
   x |= buf[2];
   x <<= 8;
   x |= buf[3];
   return x;
}
#define FRAMES_FLAG     0x0001
#define BYTES_FLAG      0x0002
#define TOC_FLAG        0x0004
#define VBR_SCALE_FLAG  0x0008

int
GetMP3Header(Sound *S, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	     char *buf)
{
  int offset = 0, okHeader = 0, i, j;
  int mean_frame_size = 0, bitrate, fs;
  int layer, prot, br_index, sr_index, pad, mode, totalFrames;
  int passes = 0;
  mp3Info *Si = (mp3Info *)S->extHead;
  
  if (S->debug > 2) Snack_WriteLog("    Enter GetMP3Header\n");
   int mean_frame_size = 0, bitrate = 0, fs, ID3Extra = 0;
   int layer, prot, br_index, sr_index, pad, mode, totalFrames=0;
   int passes = 0;
   int head_flags;
   int xFrames=0, xBytes=0, xAvgBitrate=0, xAvgFrameSize=0 ;
   mp3Info *Si = (mp3Info *)S->extHead;

   if (S->debug > 2) Snack_WriteLog("    Enter GetMP3Header\n");

   if (S->extHead != NULL && S->extHeadType != SNACK_MP3_INT) {
      Snack_FileFormat *ff;

      for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
         if (strcmp(S->fileType, ff->name) == 0) {
            if (ff->freeHeaderProc != NULL) {
               (ff->freeHeaderProc)(S);
            }
         }
      }
   }

  if (Si == NULL) {
    Si = (mp3Info *) ckalloc(sizeof(mp3Info));
    for (i = 0; i < 32; i++) {
      for (j = 0; j < 16; j++) {
	Si->u[0][0][i][j] = 0.0f;
	Si->u[0][1][i][j] = 0.0f;
	Si->u[1][0][i][j] = 0.0f;
	Si->u[1][1][i][j] = 0.0f;
      }
    }
    for (i = 0; i < 32; i++) {
      for (j = 0; j < 18; j++) {
	s[0][i][j] = 0.0f;
	s[1][i][j] = 0.0f;
      }
    }
    Si->u_start[0] = 0;
    Si->u_start[1] = 0;
    Si->u_div[0] = 0;
    Si->u_div[1] = 0;
    Si->cnt = 0;
    
    if (!initDone) {
      InitMP3();
      initDone = 1;
    } 
  }
   if (Si == NULL) {
      Si = (mp3Info *) ckalloc(sizeof(mp3Info));
      for (i = 0; i < 32; i++) {
         for (j = 0; j < 16; j++) {
            Si->u[0][0][i][j] = 0.0f;
            Si->u[0][1][i][j] = 0.0f;
            Si->u[1][0][i][j] = 0.0f;
            Si->u[1][1][i][j] = 0.0f;
         }
      }
      for (i = 0; i < 32; i++) {
         for (j = 0; j < 18; j++) {
            s[0][i][j] = 0.0f;
            s[1][i][j] = 0.0f;
         }
      }
      Si->u_start[0] = 0;
      Si->u_start[1] = 0;
      Si->u_div[0] = 0;
      Si->u_div[1] = 0;
      Si->cnt = 0;

      if (!initDone) {
         InitMP3();
         initDone = 1;
      }
   }
  /**
   * TFW: If any ID3V2 info is to be got, it can be read here
   * Insert code as needed.
   * See: http://www.id3.org/id3v2-00.txt for more details.
   * TFW Potential problem: if the buffer length actually passed in
   * is less than MAXSCANDEPTH the a crash may occur here. It
   * should normally be larger but on a very small file it won't
   * be.
   */
   S->length = -1;
  if (strncmp("ID3", buf, strlen("ID3")) == 0) {
   if (strncmp("ID3", buf, strlen("ID3")) == 0) {
    /* ID3 size uses 28 packed bits, or 7 LSBs of words 6-9 */
    /* The extra 10 bytes account for this header length)*/
    long idOffset = (int )((long)(buf[6]&0x7F)*2097152l
			   + (long)(buf[7]&0x7F)*16384l
			   + (long)(buf[8]&0x7F)*128l
			   + (long)buf[9] + 10);
    offset = idOffset;
    /* Don't check for extended header yet */
    if (offset > MAXSCANDEPTH) {
      if (S->debug > 0) Snack_WriteLogInt("ID3 Tag is too big", offset);
      Tcl_AppendResult(interp, "ID3 Tag is too big", NULL);
      return TCL_ERROR;
    }
  }
  else if (strncasecmp("RIFF", buf, strlen("RIFF")) == 0) {
    if (buf[20] == 0x55) {
      offset = 72;
      if (S->storeType == SOUND_IN_CHANNEL) {
	Tcl_Read(ch, &buf[S->firstNRead], 76-S->firstNRead);
      }
    }
  }
      long idOffset = (int )((long)(buf[6]&0x7F)*2097152l
                             + (long)(buf[7]&0x7F)*16384l
                             + (long)(buf[8]&0x7F)*128l
                             + (long)buf[9] + 10);
      /* Attempt to read beyond the ID3 offset if it is too large */
      if (idOffset > MAXSCANDEPTH) {

         if (Tcl_Seek(ch, idOffset, SEEK_SET) > 0) {
            if (Tcl_Read(ch, &buf[0], MAXSCANDEPTH) > 0) {
               /* local buffer is now at end of ID3 tag */
               offset = 0;
               ID3Extra = idOffset;
            } else {
               if (S->debug > 0) Snack_WriteLogInt("ID3 size is in error is too big", offset);
                  Tcl_AppendResult(interp, "ID3 size is in error is too big", NULL);
                  return TCL_ERROR;
               }

         } else {
            if (S->debug > 0) Snack_WriteLogInt("ID3 Tag is bigger than file size", offset);
            Tcl_AppendResult(interp, "ID3 Tag is bigger than file size", NULL);
            return TCL_ERROR;
         }

      } else {
         offset = idOffset;
      }
   }
   else if (strncasecmp("RIFF", buf, strlen("RIFF")) == 0) {
      if (buf[20] == 0x55) {
         offset = 72;
         if (S->storeType == SOUND_IN_CHANNEL) {
            Tcl_Read(ch, &buf[S->firstNRead], 76-S->firstNRead);
         }
      }
   }
  S->length = -1;
  /* Continue to scan until a satisfactory frame is found */
  do {
   do {
    /* Valid Frame sync
       Bit Rate not 0000 or 1111 (which are invalid)
       Layer 00 (reserved)
       Sample Rate 11 (reserved)
    */
    if ((buf[offset]   & 0xff) == 0xff && (buf[offset+1] & 0xe0) == 0xe0 &&
	(buf[offset+2] & 0x0c) != 0x0c && (buf[offset+2] & 0xf0) != 0x00 &&
	(buf[offset+2] & 0xf0) != 0xf0 && (buf[offset+1] & 0x06) != 0x00) {
      if ((buf[offset]   & 0xff) == 0xff && (buf[offset+1] & 0xe0) == 0xe0 &&
          (buf[offset+2] & 0x0c) != 0x0c && (buf[offset+2] & 0xf0) != 0x00 &&
          (buf[offset+2] & 0xf0) != 0xf0 && (buf[offset+1] & 0x06) != 0x00) {
      /* Have a good frame sync and the header data passed the initial checks */
      char *p = &buf[offset], *q = NULL;
      
      if (((buf[offset + 3] & 0xc0) >> 6) != 3) {
	S->nchannels = 2;
      } else {
	S->nchannels = 1;
      }
      S->encoding = LIN16;
      S->sampsize = 2;
	char *p = &buf[offset], *q = NULL;
	unsigned char *xBuf = (unsigned char *)p;

         if (((buf[offset + 3] & 0xc0) >> 6) != 3) {
            S->nchannels = 2;
         } else {
            S->nchannels = 1;
         }
         S->encoding = LIN16;
         S->sampsize = 2;
      S->samprate = t_sampling_frequency[(buf[offset + 1] & 0x08)>>3][(buf[offset + 2] & 0x0c)>>2];
      
      Si->id = (buf[offset+1] & 0x08) >> 3;
      layer = (buf[offset+1] & 0x06) >> 1;
      prot = (buf[offset+1] & 0x01);
      
      br_index = (buf[offset+2] & 0xf0) >> 4;

         Si->id = (buf[offset+1] & 0x08) >> 3;
         sr_index = (buf[offset+2] & 0x0c) >> 2;
         S->samprate = t_sampling_frequency[Si->id][sr_index];
         layer = (buf[offset+1] & 0x06) >> 1;
         prot = (buf[offset+1] & 0x01);

         br_index = (buf[offset+2] & 0xf0) >> 4;
      sr_index = (buf[offset+2] & 0x0c) >> 2;
      pad = (buf[offset+2] & 0x02) >> 1;
      mode = (buf[offset+3] & 0xc0) >> 6;
      /* hsize not referenced
	 if (Si->id) 
	 if (mode==3) {
         pad = (buf[offset+2] & 0x02) >> 1;
         mode = (buf[offset+3] & 0xc0) >> 6;
	 
         bitrate = t_bitrate[Si->id][3 - layer][br_index];
         fs = t_sampling_frequency[Si->id][sr_index];
         /* Xing VBR Check
          * If a Xing VBR header exists, then use the info from there
          * otherwise the length and average bitrate estimate will
          * be incorrect.
          *
          * First, determine offset of header into Aux section
          */
         if ( Si->id ) {                         /* mpeg1 */
            xBuf += 4 + (mode != 3 ? 32 : 17);
	 hsize=21;
	 } else {
         } else {                                /* mpeg */
	 hsize=36;
	 }
	 else
	 if (mode==3) {
	 hsize=13;
            xBuf += 4 + (mode != 3 ? 17 : 9);
         }

         if (strncmp("Xing",xBuf,4)==0) {
         /* We have a Xing VBR header */
            xBuf+=4;
	 } else {
	 hsize=21;
	 }
	 
	 if (prot == 0) hsize += 2;
            head_flags = ExtractI4(xBuf);
            xBuf+=4;
            if ( head_flags & FRAMES_FLAG ) {
	      xFrames   = ExtractI4(xBuf);  /* Number of frames in file */
	      xBuf+=4;
            }
            if ( head_flags & BYTES_FLAG ) {
	      xBytes = ExtractI4(xBuf);    /* File size (at encoding) */
	      xBuf+=4;
            }
            /* Enough info to compute average VBR bitrate and framesize*/
            if ( xFrames > 0 && xBytes > 0 && (head_flags & (BYTES_FLAG | FRAMES_FLAG))) {
               xAvgFrameSize =  xBytes/xFrames;
      */
      
      bitrate = t_bitrate[Si->id][3 - layer][br_index];
      fs = t_sampling_frequency[Si->id][sr_index];
               xAvgBitrate =  (xAvgFrameSize*fs)/(Si->id ? 144000:72000);   /* Layer 1 */
            }
         }

      /* End XING stuff */

      if (Si->id) mean_frame_size = 144000*bitrate / fs;
      else mean_frame_size = 72000 * bitrate / fs;
      
         mean_frame_size = (bitrate * (Si->id ? 144000:72000) / fs);   /* This frame size */

      /* Max should be 2926 */
      
      if (mean_frame_size > MAXFRAMESIZE) {
	mean_frame_size = MAXFRAMESIZE;
      }
      
      /* TFW: note to self
	 If we didn't find a header where we first expected it
	 then the next valid one must match the following on.
      */
      if (passes > 0) {
	q = p + mean_frame_size;
	/* Verify this frame and next frame headers match */
	if (p[0] == q[0] && p[1] == q[1] && (p[2] & 0xfd) == (q[2]& 0xfd)
	    && (p[3] & 0xdf) == (q[3] & 0xdf)) {
	  okHeader = 1;
	} else {
	  offset++;
	}
      } else {
	okHeader = 1;
      }
    } else {
      offset++;
    }
    if (offset > MAXSCANDEPTH) {
      if (S->debug > 0) Snack_WriteLogInt("Could not find MP3 header", offset);
      Tcl_AppendResult(interp, "Could not find MP3 header", NULL);
      return TCL_ERROR;
    }
    passes++;
  } while (okHeader == 0);
  
  if (S->debug > 0) Snack_WriteLogInt("Found MP3 header at offset", offset);
  Si->bytesPerFrame = mean_frame_size;
  
  if (ch != NULL) {
    if (Tcl_Seek(ch, 0, SEEK_END) > 0) {
      totalFrames = (Tcl_Tell(ch) - offset) / Si->bytesPerFrame;

         if (mean_frame_size > MAXFRAMESIZE) {
            mean_frame_size = MAXFRAMESIZE;
         }

         /*
            If we didn't find a header where we first expected it
            then the next valid one must match the following on.
         */
         if (passes > 0) {
            q = p + mean_frame_size;
            /* Verify this frame and next frame headers match */
            if (p[0] == q[0] && p[1] == q[1] && (p[2] & 0xfd) == (q[2]& 0xfd)
                && (p[3] & 0xdf) == (q[3] & 0xdf)) {
               okHeader = 1;
            } else {
               offset++;
            }
         } else {
            okHeader = 1;
         }
      } else {
         offset++;
      }
      if (offset > MAXSCANDEPTH) {
         if (S->debug > 0) Snack_WriteLogInt("Could not find MP3 header", offset);
         Tcl_AppendResult(interp, "Could not find MP3 header", NULL);
         return TCL_ERROR;
      }
      passes++;
   } while (okHeader == 0);

   if (S->debug > 0) Snack_WriteLogInt("Found MP3 header at offset", offset);
   Si->bytesPerFrame = xAvgFrameSize ? xAvgFrameSize : mean_frame_size;
   /* Compute length */
   if (ch != NULL) {
      if (xFrames == 0) {
         if (Tcl_Seek(ch, 0, SEEK_END) > 0) {
            totalFrames = (Tcl_Tell(ch) - (offset + ID3Extra)) / Si->bytesPerFrame;
      if (Si->id) {
	S->length = totalFrames * 18 * 32 * 2;
      } else {
	S->length = totalFrames * 18 * 32;
         }
      }
      else {
         totalFrames = xFrames;
      }
      S->length = (totalFrames * 18 * 32) * (Si->id ? 2:1);
    }
   }
  }
  if (obj != NULL) {
    if (useOldObjAPI) {
      totalFrames = (obj->length - offset) / 
   if (obj != NULL) {
      if (xFrames > 0) {
         totalFrames = xFrames;
      }
      else {
         if (useOldObjAPI) {
            totalFrames = (obj->length - (offset + ID3Extra)) / Si->bytesPerFrame;
	Si->bytesPerFrame;
    } else {
         } else {
#ifdef TCL_81_API
      int length = 0;
            int length = 0;
      
      Tcl_GetByteArrayFromObj(obj, &length);
      totalFrames = (length - offset) / Si->bytesPerFrame;
            Tcl_GetByteArrayFromObj(obj, &length);
            totalFrames = (length - (offset + ID3Extra)) / Si->bytesPerFrame;
#endif
    }
         }
    if (Si->id) {
      S->length = totalFrames * 18 * 32 * 2;
    } else {
      S->length = totalFrames * 18 * 32;
    }
  }
  
  S->headSize = offset;
  S->swap = 0;
  Si->bufind = offset;
  Si->restlen = 0;
  Si->gotHeader = 1;
  Si->append = 0;
  Si->data = 0;
  memcpy((char *)&Si->headerInt, &buf[offset], 4);
      }
      S->length = (totalFrames * 18 * 32) * (Si->id ? 2:1);
   }

   S->headSize = offset + ID3Extra;
   S->swap = 0;
   Si->bufind = offset + ID3Extra;
   Si->restlen = 0;
   Si->gotHeader = 1;
   Si->append = 0;
   Si->data = 0;
  /* If Xing header, then use an average bitrate, otherwise use this frames bitrate */
   Si->bitrate = 1000 * (xAvgBitrate ? xAvgBitrate : bitrate);

   memcpy((char *)&Si->headerInt, &buf[offset], 4);

  S->extHead = (char *) Si;
   S->extHead = (char *) Si;
   S->extHeadType = SNACK_MP3_INT;

  if (S->debug > 2) Snack_WriteLogInt("    Exit GetMP3Header", S->length);
   if (S->debug > 2) Snack_WriteLogInt("    Exit GetMP3Header", S->length);

  return TCL_OK;
   return TCL_OK;
}

#define HMASK 0xfffffddf

int
SeekMP3File(Sound *S, Tcl_Interp *interp, Tcl_Channel ch, int pos)
{
  int filepos, i, j, depth=0;
  int seekpos, filepos, i, j, depth=0;
  unsigned char tmp[4];
  unsigned int hInt = 0;
  unsigned int hmask, smask;
  mp3Info *Si = (mp3Info *)S->extHead;
  if (S->swap) {
    /* Big endian, some unixs, 68K, PPC ... */
    hmask = beHMASK;
    smask = beSMASK;
  } else {
    /* Little endian, x86, VAX */
    hmask = leHMASK;
    smask = leSMASK;
  }
  

  if (S->debug > 2) Snack_WriteLogInt("    Enter SeekMP3File", pos);

  Si->bufind = S->headSize;
  Si->restlen = 0;
  Si->append = 0;
  Si->cnt = 0;
  Si->data = 0;
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-
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      s[0][i][j] = 0.0f;
      s[1][i][j] = 0.0f;
    }
  }

  /* Get approximate position */
  /* TFW Note to self: ID3 Tag is accounted for in headSize */
 
  pos = S->headSize + pos * S->sampsize * S->nchannels;

  seekpos =  pos * S->sampsize * S->nchannels;
  if (Si->id) {
    filepos = (Si->bytesPerFrame * (pos / (18 * 32 * 2 * 2 * 2)))&0xfffffffc;
    filepos = (S->headSize + (Si->bytesPerFrame * (seekpos / (18 * 32 * 2 * 2 * 2))))&0xfffffffc;
  } else {
    filepos = (Si->bytesPerFrame * (pos / (18 * 32 * 2)))&0xfffffffc;
    filepos = (S->headSize + (Si->bytesPerFrame * (seekpos / (18 * 32 * 2))))&0xfffffffc;
  }

  /* Sync up to next frame */
  hInt = Si->headerInt;
  if (ch != NULL) {
    int res;
    while (filepos == Tcl_Seek(ch, filepos, SEEK_SET)) {
      res = Tcl_Read(ch, (char *) tmp, 4);
      if (res <= 0) {
	if (S->debug > 0) Snack_WriteLogInt("    Seek beyond EOF", filepos);
	return((pos - S->headSize) / (S->sampsize * S->nchannels));
        if (S->debug > 0) Snack_WriteLogInt("    Seek beyond EOF", filepos);
        return(res); /* Denote seek beyond eof */
      }
      if ((hInt & smask) == ((((unsigned int *)tmp)[0]) & smask)) {
	/* we have a sync, not make sure the layer info matches */
	if ((hInt & hmask) == ((((unsigned int *)tmp)[0]) & hmask)) {
	  memcpy((char *)&Si->headerInt, tmp, 4);
	  Si->gotHeader = 1;
	  if (S->debug > 2) Snack_WriteLogInt("    Seek done after", depth);
	  break;
	} else {
	  depth++;      /* debugging */
	}
        /* we have a sync, not make sure the layer info matches */
        if ((hInt & hmask) == ((((unsigned int *)tmp)[0]) & hmask)) {
          memcpy((char *)&Si->headerInt, tmp, 4);
          Si->gotHeader = 1;
          if (S->debug > 2) Snack_WriteLogInt("    Seek done after", depth);
          return (pos);
        } else {
          depth++;      /* debugging */
        }
      }
      filepos++;
    }
    /* If we got here, we went past the eof */
    if (S->debug > 0) Snack_WriteLogInt("    Seek beyond EOF", filepos);
    pos = -1;
  }
  
  pos = (pos - S->headSize) / (S->sampsize * S->nchannels);

  /*  pos = (pos - S->headSize) / (S->sampsize * S->nchannels);*/

  if (S->debug > 2) Snack_WriteLogInt("    Exit SeekMP3File", pos);

  return(pos);
}

int
ReadMP3Samples(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, char *ibuf,
	       float *obuf, int len)
               float *obuf, int len)
{
  struct AUDIO_HEADER header;
  int last = -1;
  char *rest = (char *)((mp3Info *)s->extHead)->rest;
  mp3Info *Si = (mp3Info *)s->extHead;

  if (s->debug > 2) Snack_WriteLogInt("    Enter ReadMP3Samples", len);
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-







  }
  if (Si->cnt == 0) {
    Si->gotHeader = 1;
  }
  for (;; Si->cnt++) {
    if (Si->ind >= len) break;
    if (Si->ind == last &&
	Si->ind > 0) break;    
        Si->ind > 0) break;
    last = Si->ind;
    if (processHeader(s, &header, Si->cnt)) break;
    /*printf("AAAA %d\n", bufind);*/
    if (layer3_frame((mp3Info *)s->extHead, &header, len)) break;
  }

  Si->bufind = bufind;
  Si->append = append;
  Si->data = data;

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int
OpenMP3File(Sound *S, Tcl_Interp *interp, Tcl_Channel *ch, char *mode)
{
  int i, j;
  mp3Info *Si = NULL;

  if (S->debug > 2) Snack_WriteLog("    Enter OpenMP3File\n");

  if (S->extHead != NULL && S->extHeadType != SNACK_MP3_INT) {
    Snack_FileFormat *ff;

    for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
      if (strcmp(S->fileType, ff->name) == 0) {
        if (ff->freeHeaderProc != NULL) {
          (ff->freeHeaderProc)(S);
        }
      }
    }
  }

  if (S->extHead == NULL) {
    S->extHead = (char *) ckalloc(sizeof(mp3Info));
    S->extHeadType = SNACK_MP3_INT;
  }
  Si = (mp3Info *)S->extHead;
  for (i = 0; i < 32; i++) {
    for (j = 0; j < 16; j++) {
      Si->u[0][0][i][j] = 0.0f;
      Si->u[0][1][i][j] = 0.0f;
      Si->u[1][0][i][j] = 0.0f;
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  }
  Tcl_SetChannelOption(interp, *ch, "-translation", "binary");
#ifdef TCL_81_API
  Tcl_SetChannelOption(interp, *ch, "-encoding", "binary");
#endif

  if (S->debug > 2) Snack_WriteLog("    Exit OpenMP3File\n");
  

  return TCL_OK;
}

int
CloseMP3File(Sound *s, Tcl_Interp *interp, Tcl_Channel *ch)
{
  if (s->debug > 2) Snack_WriteLog("    Enter CloseMP3File\n");
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+
+
+
+
+
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+
+
+
+
+
+
+
+
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+
+
+
FreeMP3Header(Sound *s)
{
  if (s->debug > 2) Snack_WriteLog("    Enter FreeMP3Header\n");

  if (s->extHead != NULL) {
    ckfree((char *)s->extHead);
    s->extHead = NULL;
    s->extHeadType = 0;
  }

  if (s->debug > 2) Snack_WriteLog("    Exit FreeMP3Header\n");
}

int
ConfigMP3Header(Sound *s, Tcl_Interp *interp, int objc,
                Tcl_Obj *CONST objv[])
{
  mp3Info *si = (mp3Info *)s->extHead;
  int arg, index;
  static char *optionStrings[] = {
    "-bitrate", NULL
  };
  enum options {
    BITRATE
  };

  if (si == NULL || objc < 3) return 0;

  if (objc == 3) { /* get option */
    if (Tcl_GetIndexFromObj(interp, objv[2], optionStrings, "option", 0,
                            &index) != TCL_OK) {
      Tcl_AppendResult(interp, ", or\n", NULL);
      return 0;
    }

    switch ((enum options) index) {
    case BITRATE:
      {
        Tcl_SetObjResult(interp, Tcl_NewIntObj(si->bitrate));
        break;
      }
    }
  } else {
    for (arg = 2; arg < objc; arg+=2) {
      int index;

      if (Tcl_GetIndexFromObj(interp, objv[arg], optionStrings, "option", 0,
                              &index) != TCL_OK) {
        return TCL_ERROR;
      }

      if (arg + 1 == objc) {
        Tcl_AppendResult(interp, "No argument given for ",
                         optionStrings[index], " option\n", (char *) NULL);
        return 0;
      }

      switch ((enum options) index) {
      case BITRATE:
        {
          break;
        }
      }
    }
  }

  return 1;
}

Changes to snack/generic/jkFormatMP3.h.

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+







  int bufind;
  unsigned char buffer[BUFFER_SIZE+BUFFER_AUX];
  int append;
  int data;
  float u[2][2][32][16];
  int u_start[2];
  int u_div[2];
  int bitrate;
} mp3Info;

/* "audio.h" */

struct AUDIO_HEADER {
	int ID;
	int layer;

Changes to snack/generic/jkMixer.c.

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-
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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or

Changes to snack/generic/jkPitchCmd.c.

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9

-
+







/* 
 * Copyright (C) 2001 Kåre Sjölander <kare@speech.kth.se>
 * Copyright (C) 2000-2002 Kåre Sjölander <kare@speech.kth.se>
 * Copyright (C) 1997 Philippe Langlais <felipe@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
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-





-

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+








  length = cst_step_max-cst_step_min+1;

  for (trame=i=0; i < longueur; i += cst_step_hamming,trame++) {
    if (i > s->length - cst_length_hamming) break;
    if (i > longueur - cst_length_hamming/2) break;
    if (quick && (Nrj[trame] < seuil_nrj) && (Dpz[trame] > seuil_dpz)) {
      Resultat[trame] = NULL;
    } else {
      Resultat[trame] = (int *) ckalloc(sizeof(int) * length); /* un peu couteux en temps */
      
      amdf(s, (int) i,Hammer,Resultat[trame],(Nrj[trame])? Nrj[trame]:1,start); 
      amdf(s, (int) i,Hammer,Resultat[trame],(Nrj[trame])? Nrj[trame]:1,start);
      for (j=0; j<length;j++) {
	if (Resultat[trame][j]>max_amdf) max_amdf = Resultat[trame][j];
	
	if (Resultat[trame][j]<min_amdf) min_amdf = Resultat[trame][j];
      }
    }
    if ((trame % 20) == 19) {
      int res = Snack_ProgressCallback(s->cmdPtr, interp, "Computing pitch",
				       0.05 + 0.95 * (double) i / longueur);
      if (res != TCL_OK) {
	for (i = 0; i < trame; i++) {
	  if (Resultat[i]) {
	    ckfree((char *) Resultat[i]);
	  }
	}
	return TCL_ERROR;
      }
    }
  }
  Snack_ProgressCallback(s->cmdPtr, interp, "Computing pitch", 1.0);
  Resultat[trame] = NULL;
  *nb_trames = (int) trame;
  

  if (debug) printf("min_amdf=%d, max_amdf=%d\n",min_amdf,max_amdf);
  return TCL_OK;
}

/* ************************************************************************ */
/*             LA MAGOUILLE DE LA RECHERCHE DU MEILLEUR CHEMIN              */
/* ************************************************************************ */
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-
-
+
+
+







  min_nrj = min_dpz = MAX_ENTIER;

  Snack_ProgressCallback(s->cmdPtr, interp, "Computing pitch", 0.0);

  for (trame=i=0; i<longueur; i += cst_step_hamming,trame++) {
    J = minimum(s->length,(i+cst_length_hamming));
    JJ = J-1;
    if (s->length < i + start + cst_length_hamming) {
      Snack_GetSoundData(s, i+start, Signal, s->length - i + start);
      for (j = s->length - i + start; j < cst_length_hamming; j++) {
	Signal[j] = 0.0f;
      }
    } else {
    Snack_GetSoundData(s, i+start, Signal, cst_length_hamming);
    
      Snack_GetSoundData(s, i+start, Signal, cst_length_hamming);
    }    

    /* ---- nrj ---- */
    for (nrj=0.0,j=0; j<J-i; j++) 
      nrj += CARRE((double) Signal[j]);  
    
    m = Nrj[trame] = (short) (10 * log10(nrj));
    
    if (m > max_nrj) max_nrj = m;
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+




-
-
-
-
-







      if (sens) while ( (j<JJ-i) && (Signal[j] > Signal[j+1]) ) j++;
      else while ( (j<JJ-i) && (Signal[j] <= Signal[j+1]) ) j++;      
    }
    m = Dpz[trame] = dpz;
    
    if (m > max_dpz) max_dpz = m;
    if (m < min_dpz) min_dpz = m;
    

    if ((trame % 300) == 299) {
      int res = Snack_ProgressCallback(s->cmdPtr, interp, "Computing pitch",
				       0.05 * (double) i / longueur);
      if (res != TCL_OK) {
	for (i = 0; i < trame; i++) {
	  if (Resultat[i]) {
	    ckfree((char *) Resultat[i]);
	  }
	}
	return TCL_ERROR;
      }
    }  
  }

  seuil_nrj = min_nrj + (SEUIL_NRJ*(max_nrj-min_nrj))/100;   
  seuil_dpz = min_dpz + (SEUIL_DPZ*(max_dpz-min_dpz))/100;  
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+
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+








  nb_trames = (longueur / cst_step_hamming) + 10;
  Nrj =  (short *) ckalloc(sizeof(short) * nb_trames);   
  Dpz =  (short *) ckalloc(sizeof(short) * nb_trames);
  Vois = (short *) ckalloc(sizeof(short) * nb_trames);
  Fo =   (short *) ckalloc(sizeof(short) * nb_trames);
  Resultat = (int **) ckalloc(sizeof(int *) * nb_trames);

  for (i = 0; i < nb_trames; i++) {
    Resultat[i] = (int *) ckalloc(sizeof(int) * (cst_step_max-cst_step_min+1));
  }

  nb_trames = nbframes = calcul_nrj_dpz(s, interp, start, longueur);

  Hamming = (double *) ckalloc(sizeof(double)*cst_length_hamming);
  Hammer = (int *) ckalloc(sizeof(int) * cst_length_hamming);
  for (i=0;i<cst_pics_amdf;i++) {
    Coeff_Amdf[i] = (RESULT *) ckalloc(sizeof(RESULT)* nb_trames);

Changes to snack/generic/jkSound.c.

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9

-
+







/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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-
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-







  tc = *(p+3);
  *(p+3) = *(p+4);
  *(p+4) = tc;
  
  return(d);
}

void
ByteSwapSound(Sound *s)
{
  /*
  int i, j;
  for (j = 0; j < s->nblks; j++)
    if (s->encoding == LIN16)
      for (i = 0; i < min(SBLKSIZE, s->length * s->nchannels); i++)
	s->blocks[j][i] = Snack_SwapShort(s->blocks[j][i]);
    else
      for (i = 0; i < min(LBLKSIZE, s->length * s->nchannels); i++)
	((int **)s->blocks)[j][i] = Snack_SwapLong(((int **)s->blocks)[j][i]);
	*/
}

extern struct Snack_FileFormat *snackFileFormats;

void
Snack_DeleteSound(Sound *s)
{
  jkCallback *currCB;
  Snack_FileFormat *ff;
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+





-
+

-

-














+
+
+
+
+
+
+
+







    s->exact = len * s->nchannels * sampSize;
    if ((s->blocks[0] = (float *) ckalloc(s->exact)) == NULL) {
      return TCL_ERROR;
    }
    i = 1;
    s->maxlength = len;
  } else if (neededblks > s->nblks) {
    float *tmp = s->blocks[0];

    if (s->debug > 2) {
      Snack_WriteLogInt("    Allocating full block(s)", neededblks - s->nblks);
    }

    /* De-allocate any exact block */
    /* Do not count exact block, needs to be re-allocated */
    if (s->exact > 0) {
      ckfree((char *) s->blocks[0]);
      s->nblks = 0;
      s->exact = 0;
    }

    for (i = s->nblks; i < neededblks; i++) {
      if ((s->blocks[i] = (float *) ckalloc(CBLKSIZE)) == NULL) {
	break;
      }
    }
    if (i < neededblks) {
      if (s->debug > 2) Snack_WriteLogInt("    block alloc failed", i);
      for (--i; i >= s->nblks; i--) {
	ckfree((char *) s->blocks[i]);
      }
      return TCL_ERROR;
    }

    /* Copy and de-allocate any exact block */
    if (s->exact > 0) {
      memcpy(s->blocks[0], tmp, s->exact);
      ckfree((char *) tmp);
      s->exact = 0;
    }

    s->maxlength = neededblks * blockSize / s->nchannels;
  } else if (neededblks == 1 && s->exact > 0) {

    /* Reallocate to one full block */

    float *tmp = (float *) ckalloc(CBLKSIZE);

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+
+











+
-
+

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+








  return TCL_OK;
}

static int
configureCmd(Sound *s, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
{
  int arg, filearg = 0;
  int arg, filearg = 0, newobjc;
  Tcl_Obj **newobjv = NULL;
  static char *optionStrings[] = {
    "-load", "-file", "-channel", "-rate", "-frequency", "-channels",
    "-encoding", "-format", "-byteorder", "-buffersize", "-skiphead",
    "-guessproperties", "-precision", "-changecommand", "-fileformat",
    "-debug", NULL
  };
  enum options {
    OPTLOAD, OPTFILE, CHANNEL, RATE, FREQUENCY, CHANNELS, ENCODING, FORMAT,
    BYTEORDER, BUFFERSIZE, SKIPHEAD, GUESSPROPS, PRECISION, CHGCMD, FILEFORMAT,
    OPTDEBUG
  };
  Snack_FileFormat *ff;

  
  if (s->debug > 0) { Snack_WriteLog("Enter configureCmd\n"); }

  Snack_RemoveOptions(objc-2, objv+2, optionStrings, &newobjc,
		      (Tcl_Obj **) &newobjv);
  if (newobjc > 0) {
    for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
      if (strcmp(s->fileType, ff->name) == 0) {
	if (ff->configureProc != NULL) {
	  if ((ff->configureProc)(s, interp, objc, objv)) return TCL_OK;
	}
      }
    }
  }
  for (arg = 0; arg <newobjc; arg++) {
    Tcl_DecrRefCount(newobjv[arg]);
  }
  ckfree((char *)newobjv);

  if (objc == 2) { /* get all options */
    Tcl_Obj *objs[6];
    
    objs[0] = Tcl_NewIntObj(s->length);
    objs[1] = Tcl_NewIntObj(s->samprate);
    if (s->encoding == SNACK_FLOAT) {
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+







  } else { /* set option */

    s->guessEncoding = -1;
    s->guessRate = -1;

    for (arg = 2; arg < objc; arg+=2) {
      int index;

      if (Tcl_GetIndexFromObj(interp, objv[arg], optionStrings, "option", 0,
			      &index) != TCL_OK) {
	return TCL_ERROR;
      }
      
      if (arg + 1 == objc) {
	Tcl_AppendResult(interp, "No argument given for ",
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+








  return TCL_OK;
}

int filterSndCmd(Sound *s, Tcl_Interp *interp, int objc,
		 Tcl_Obj *CONST objv[]);

#define NSOUNDCOMMANDS   32
#define NSOUNDCOMMANDS   33
#define MAXSOUNDCOMMANDS 50

static int nSoundCommands   = NSOUNDCOMMANDS;
static int maxSoundCommands = MAXSOUNDCOMMANDS;

char *sndCmdNames[MAXSOUNDCOMMANDS] = {
  "play",
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+







  "dBPowerSpectrum",
  "pitch",
  "reverse",
  "shape",
  "datasamples",
  "filter",
  "swap",
  "power",
  NULL
};

/* NOTE: NSOUNDCOMMANDS needs updating when new commands are added. */

soundCmd *sndCmdProcs[MAXSOUNDCOMMANDS] = {
  playCmd,
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+



+







  convertCmd,
  dBPowerSpectrumCmd,
  pitchCmd,
  reverseCmd,
  shapeCmd,
  dataSamplesCmd,
  filterSndCmd,
  swapCmd
  swapCmd,
  powerCmd
};

soundDelCmd *sndDelCmdProcs[MAXSOUNDCOMMANDS] = {
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
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  s->validStart = 0;
  s->linkInfo.linkCh = NULL;
  s->inByteOrder = SNACK_NATIVE;
  s->devStr = NULL;
  s->soundTable = NULL;
  s->filterName = NULL;
  s->extHead    = NULL;
  s->extHeadType = 0;
  s->extHead2   = NULL;
  s->extHead2Type = 0;
  s->loadOffset = 0;
  s->changeCmdPtr = NULL;
  s->userFlag   = 0;
  s->userData   = NULL;

  return s;
}

Changes to snack/generic/jkSound.h.

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2

3
4
5
6
7
8
9
1

2
3
4
5
6
7
8
9

-
+







/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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+
+
+







  int itemRefCnt;
  int validStart;
  SnackLinkedFileInfo linkInfo;
  char *devStr;
  Tcl_HashTable *soundTable;
  char *filterName;
  char *extHead;
  char *extHead2;
  int extHeadType;
  int extHead2Type;
  int loadOffset;
  Tcl_Obj *changeCmdPtr;
  unsigned int userFlag; /* User flags, for new file formats, etc */
  char *userData;        /* User data pointer */

} Sound;

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-
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#define HEADBUF 4096

extern char *LoadSound(Sound *s, Tcl_Interp *interp, Tcl_Obj *obj,
		       int startpos, int endpos);

extern int SaveSound(Sound *s, Tcl_Interp *interp, char *filename,
		     Tcl_Obj *obj, int objc, Tcl_Obj *CONST objv[],
		     Tcl_Obj *obj, int startpos, int len, char *type);
		     int startpos, int len, char *type);

extern int GetChannels(Tcl_Interp *interp, Tcl_Obj *obj, int *nchannels);

extern int GetEncoding(Tcl_Interp *interp, Tcl_Obj *obj, 
		       int *encoding, int *sampsize);

extern float Snack_SwapFloat(float f);

extern double Snack_SwapDouble(double d);

extern void ByteSwapSound(Sound *s);

extern void SwapIfBE(Sound *s);

extern void SwapIfLE(Sound *s);

extern int GetHeader(Sound *s, Tcl_Interp *interp, Tcl_Obj *obj);

extern int PutHeader(Sound *s, Tcl_Interp *interp, int length);
extern int PutHeader(Sound *s, Tcl_Interp *interp, int objc,
		     Tcl_Obj *CONST objv[], int length);

extern int WriteLELong(Tcl_Channel ch, long l);

extern int WriteBELong(Tcl_Channel ch, long l);

extern int SetFcname(Sound *s, Tcl_Interp *interp, Tcl_Obj *obj);

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typedef int  (getHeaderProc)(Sound *s, Tcl_Interp *interp, Tcl_Channel ch,
			     Tcl_Obj *obj, char *buf);

typedef char *(extensionFileTypeProc)(char *buf);

typedef int  (putHeaderProc)(Sound *s, Tcl_Interp *interp, Tcl_Channel ch,
			     Tcl_Obj *obj, int length);
			     Tcl_Obj *obj, int objc,
			     Tcl_Obj *CONST objv[], int length);

typedef int  (openProc)(Sound *s, Tcl_Interp *interp,Tcl_Channel *ch,
			char *mode);

typedef int  (closeProc)(Sound *s, Tcl_Interp *interp, Tcl_Channel *ch);

typedef int  (readSamplesProc)(Sound *s, Tcl_Interp *interp, Tcl_Channel ch,
			       char *inBuffer, float *outBuffer, int length);

typedef int  (writeSamplesProc)(Sound *s, Tcl_Channel ch, Tcl_Obj *obj,
				float *buffer, int length);
				int start, int length);

typedef int  (seekProc)(Sound *s, Tcl_Interp *interp, Tcl_Channel ch,
			int position);

typedef void (freeHeaderProc)(Sound *s);

typedef int  (configureProc)(Sound *s, Tcl_Interp *interp, int objc,
			     Tcl_Obj *CONST objv[]);

/* Deprecated: SnackFileFormat */

typedef struct SnackFileFormat {
  char *formatName;
  guessFileTypeProc      *guessProc;
  getHeaderProc          *getHeaderProc;
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  putHeaderProc           *putHeaderProc;
  openProc                *openProc;
  closeProc               *closeProc;
  readSamplesProc         *readProc;
  writeSamplesProc        *writeProc;
  seekProc                *seekProc;
  freeHeaderProc          *freeHeaderProc;
  configureProc           *configureProc;
  struct Snack_FileFormat *nextPtr;
} Snack_FileFormat;

extern int GuessEncoding(Sound *s, unsigned char *buf, int len);

extern char *GuessFileType(char *buf, int len, int eof);

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extern int OpenMP3File(Sound *s, Tcl_Interp *interp, Tcl_Channel *ch,
		       char *mode);

extern int CloseMP3File(Sound *s, Tcl_Interp *interp, Tcl_Channel *ch);

extern void FreeMP3Header(Sound *s);

extern int ConfigMP3Header(Sound *s, Tcl_Interp *interp, int objc,
			   Tcl_Obj *CONST objv[]);

typedef enum {
  SNACK_WIN_HAMMING,
  SNACK_WIN_HANNING,
  SNACK_WIN_BARTLETT,
  SNACK_WIN_BLACKMAN,
  SNACK_WIN_RECT
} SnackWindowType;

extern int GetWindowType(Tcl_Interp *interp, char *str, SnackWindowType *type);

extern int GetChannel(Tcl_Interp *interp, char *str, int nchannels,
		      int *channel);

extern float LpcAnalysis(float *data, int N, float *f, int order);

extern void PreEmphase(float *sig, float presample, int len, float preemph);

extern double SnackCurrentTime();

extern char *Snack_InitStubs (Tcl_Interp *interp, char *version, int exact);

extern int pitchCmd(Sound *s, Tcl_Interp *interp, int objc,
		    Tcl_Obj *CONST objv[]);

extern int powerCmd(Sound *s, Tcl_Interp *interp, int objc,
		    Tcl_Obj *CONST objv[]);

extern int reverseCmd(Sound *s, Tcl_Interp *interp, int objc,
		      Tcl_Obj *CONST objv[]);

#define ITEMBUFFERSIZE 100000

extern float GetSample(SnackLinkedFileInfo *infoPtr, int index);
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  struct Snack_FilterType *nextPtr;
} Snack_FilterType;

void SnackCreateFilterTypes(Tcl_Interp *interp);

extern int WriteSound(writeSamplesProc *writeProc, Sound *s,
		      Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
		      int startpos, int len, int hdsize);
		      int startpos, int len);

extern void Snack_RemoveOptions(int objc, Tcl_Obj *CONST objv[],
				char **subOptionStrings, int *newobjc,
				Tcl_Obj **newobjv);

#ifndef MAC
#  define PBSIZE 100000
#  define NMAX 16384
#else
#  define PBSIZE 64000
#  define NMAX 8192

Changes to snack/generic/jkSoundEdit.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or

Changes to snack/generic/jkSoundEngine.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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+







#define BUFSCROLLSIZE 25000
struct jkQueuedSound *rsoundQueue = NULL;

extern int debugLevel;
extern char *snackDumpFile;
static Tcl_Channel snackDumpCh = NULL;

extern struct Snack_FileFormat *snackFileFormats;

static void
RecCallback(ClientData clientData)
{
  jkQueuedSound *p;
  int nRead = 0, i, sampsleft = SnackAudioReadable(&adi);
  int size = globalRate / FPS;
  Snack_FileFormat *ff;

  if (debugLevel > 1) Snack_WriteLogInt("  Enter RecCallback", sampsleft);

  if (sampsleft > size * 2) size *= 2;
  if (sampsleft > size * 2) size = sampsleft;
  if (sampsleft < size) size = sampsleft;

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      }

      for (i = 0; i < nRead * s->nchannels; i++) {
	FSAMPLE(s, (s->length - s->validStart) * s->nchannels + i) =
	  (float) shortBuffer[i];
      }

      for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
	if (strcmp(s->fileType, ff->name) == 0) {
      WriteSound(NULL, s, s->interp, s->rwchan, NULL,
		 s->length - s->validStart, nRead, 0);

	  WriteSound(ff->writeProc, s, s->interp, s->rwchan, NULL,
		     s->length - s->validStart, nRead);
	}
      }
      
      Tcl_Flush(s->rwchan);
      
    } else { /* sound in memory */
      if (s->length > s->maxlength - max(sampsleft, 2 * nRead)) {
	if (Snack_ResizeSoundStorage(s, s->length + max(sampsleft, 2 * nRead)) != TCL_OK) {
	  return;
	}
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      printf("P\t");
    else
      printf("D\t");
  }
  printf("\n");
}
*/
extern struct Snack_FileFormat *snackFileFormats;

extern Tcl_HashTable *filterHashTable;
extern float globalScaling;

static int
AssembleSoundChunk(int inSize)
{
  int chunkWritten = 1, writeSize = 0, size = inSize, i, j;
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    } else { /* No filter to apply */
      if (inputExhausted) {
	p->status = SNACK_QS_DONE;
      }
      p->nWritten += nPrepared;
      outFrames = writeSize;
    }

    
    for (i = first * globalOutWidth, j = first * globalStreamWidth;
	 i < outFrames * globalOutWidth;) {
      int c;

      for (c = 0; c < globalOutWidth; c++, i++, j++) {

	switch (s->encoding) {
	case LIN16:
	case SNACK_FLOAT:
	case SNACK_DOUBLE:
	case ALAW:
	case MULAW:
	  floatBuffer[i] += fff[j];
	  break;
	case LIN32:
	  floatBuffer[i] += fff[j] / 65536.0f;
	  break;
	case LIN8:
	  floatBuffer[i] += fff[j] * 256.0f;
	  break;
	case LIN8OFFSET:
	  floatBuffer[i] += (fff[j] - 128.0f) * 256.0f;
	  break;
	case LIN24:
	  floatBuffer[i] += fff[j] / 256.0f;
	  break;
	case SNACK_FLOAT:
	case SNACK_DOUBLE:
	  if (s->maxsamp > 1.0) {
	    floatBuffer[i] += fff[j];
	  } else {
	    floatBuffer[i] += fff[j] * 65536.0f;
	  }
	  break;
	}
      }
      if (globalStreamWidth > globalOutWidth) {
	j += (globalStreamWidth - globalOutWidth);
      }
    }
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      }
      p->execd = 1;
    }
   */
  }

  if (closedDown) {
    ExecSoundCmd(sCurr, EXEC_AND_CLEAN);
    CleanPlayQueue();
    wop = IDLE;
    ExecSoundCmd(sCurr, EXEC_AND_CLEAN);
    return;
  }

  if (!sCurr->blockingPlay) {
    playgrain = 10;/*max(min(PLAYGRAIN, (int) (globalLatency * 500.0)), 1);*/
    
    ptoken = Tcl_CreateTimerHandler(playgrain, (Tcl_TimerProc *) PlayCallback,
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    }
  } else { /* sound in file or channel */

    /* file or channel sound record */

    if ((rop == READ || rop == PAUSED) && (s->readStatus == READ)) {
      Snack_FileFormat *ff;
      for (p = rsoundQueue; p->sound != s; p = p->next);
      if (p->sound == s) {
	if (p->next != NULL) {
	  p->next->prev = p->prev;
	}
	if (p->prev != NULL) {
	  p->prev->next = p->next;
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		    (FBLKSIZE-BUFSCROLLSIZE) * sizeof(float));
	  }
	  
	  for (i = 0; i < nRead * s->nchannels; i++) {
	    FSAMPLE(s, (s->length - s->validStart) * s->nchannels + i) =
	      (float) shortBuffer[i];
	  }
	  

	  for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
	    if (strcmp(s->fileType, ff->name) == 0) {
	      WriteSound(ff->writeProc, s, s->interp, s->rwchan, NULL,
			 s->length - s->validStart, nRead);
	    }
	  }
	  /*
	  WriteSound(NULL, s, s->interp, s->rwchan, NULL,
		     (s->length - s->validStart) * s->nchannels,
		     nRead * s->nchannels, 0);
	  
		     nRead * s->nchannels);
	  */
	  Tcl_Flush(s->rwchan);

	  if (s->debug > 2) Snack_WriteLogInt("    Tcl_Read", nRead);
	  
	  s->length += nRead;
	}
	SnackAudioFlush(&adi);
	SnackAudioClose(&adi);
	Tcl_DeleteTimerHandler(rtoken);
	rop = IDLE;
	CleanRecordQueue();
      }
      if (Tcl_Seek(s->rwchan, 0, SEEK_SET) != -1) {
	PutHeader(s, interp, s->length);
	PutHeader(s, interp, 0, NULL, s->length);
	Tcl_Seek(s->rwchan, 0, SEEK_END);
      }
      if (s->storeType == SOUND_IN_FILE) {
	for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
	  if (strcmp(s->fileType, ff->name) == 0) {
	    SnackCloseFile(ff->closeProc, s, interp, &s->rwchan);
	  }
	}
	Tcl_Close(interp, s->rwchan);
	/*Tcl_Close(interp, s->rwchan);*/
      }
      ckfree((char *)s->tmpbuf);
      s->tmpbuf = NULL;
      /*ckfree((char *)s->tmpbuf);
	s->tmpbuf = NULL;*/
      s->rwchan = NULL;
      s->validStart = 0;
      s->readStatus = IDLE;
      Snack_ExecCallbacks(s, SNACK_MORE_SOUND); 
    }

    /* file or channel sound play */
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	}
	SnackAudioFlush(&ado);
	SnackAudioClose(&ado);
	wop = IDLE;
	Tcl_DeleteTimerHandler(ptoken);
	CleanPlayQueue();
      }	
      ckfree((char *)s->tmpbuf);
      s->tmpbuf = NULL;
      /*      ckfree((char *)s->tmpbuf);
	      s->tmpbuf = NULL;*/
      if (s->rwchan != NULL) {
	if (s->storeType == SOUND_IN_FILE) {
	  Snack_FileFormat *ff;
	  for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
	    if (strcmp(s->fileType, ff->name) == 0) {
	      SnackCloseFile(ff->closeProc, s, s->interp, &s->rwchan);
	      s->rwchan = NULL;
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extern char defaultOutDevice[];

int
playCmd(Sound *s, Tcl_Interp *interp, int objc,	Tcl_Obj *CONST objv[])
{
  int startPos = 0, endPos = -1, block = 0, arg, startTime = 0;
  int channels = -1, rate = -1;
  int devChannels = -1, rate = -1;
  double dStart = 0.0;
  static char *subOptionStrings[] = {
    "-output", "-start", "-end", "-command", "-blocking", "-device", "-filter",
    "-starttime", "-devicechannels", "-devicerate", NULL
  };
  enum subOptions {
    OUTPUT, STARTPOS, END, COMMAND, BLOCKING, DEVICE, FILTER, STARTTIME,
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	if (Tcl_GetDoubleFromObj(interp, objv[arg+1], &dStart) != TCL_OK) {
	  return TCL_ERROR;
	}
	break;
      }
    case DEVCHANNELS:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &channels) != TCL_OK) {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &devChannels) != TCL_OK) {
	  return TCL_ERROR;
	}
	break;
      }
    case DEVRATE:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &rate) != TCL_OK) {
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    s->buffersize = 1024;
    if ((s->tmpbuf = (short *) ckalloc(1024)) == NULL) {
      Tcl_AppendResult(interp, "Could not allocate buffer!", NULL);
      return TCL_ERROR;
    }
    while (tlen < s->buffersize) {
      rlen = Tcl_Read(s->rwchan, &((char *)s->tmpbuf)[tlen], 1);
      if (rlen < 0) break;
      if (rlen <= 0) break;
      s->firstNRead += rlen;
      tlen += rlen;
      if (s->forceFormat == 0) {
	s->fileType = GuessFileType((char *)s->tmpbuf, tlen, 0);
	if (strcmp(s->fileType, QUE_STRING) != 0) break;
      }
    }
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      GuessEncoding(s, (unsigned char *)s->tmpbuf, s->firstNRead / 2);
    }
    ckfree((char *)s->tmpbuf);
    s->tmpbuf = NULL;
    s->firstNRead -= s->headSize;
  }
  if (s->storeType != SOUND_IN_MEMORY) {
    if (s->buffersize < s->samprate / 2) {
    /*if (s->buffersize < s->samprate / 2) {
      s->buffersize = s->samprate / 2;
    }
    if (s->tmpbuf) {
      ckfree((char *)s->tmpbuf);
    }
    if ((s->tmpbuf = (short *) ckalloc(s->buffersize * s->sampsize *
				       s->nchannels)) == NULL) {
      Tcl_AppendResult(interp, "Could not allocate buffer!", NULL);
      return TCL_ERROR;
    }

     */
    if (s->linkInfo.linkCh == NULL && s->storeType == SOUND_IN_FILE) {
      if (OpenLinkedFile(s, &s->linkInfo) != TCL_OK) {
	return TCL_ERROR;
      }
    }
  }
  if (s->storeType == SOUND_IN_MEMORY) {
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-
+


-
+

-
+

+
+
+
+

-
+





-
+




-
+







    soundQueue = qs;
  } else {
    for (p = soundQueue; p->next != NULL; p = p->next);
    p->next = qs;
  }

  if (wop == IDLE) {
    if (channels == -1) {
    if (devChannels == -1) {
      globalStreamWidth = s->nchannels;
      if (s->nchannels > SnackAudioMaxNumberChannels(s->devStr)) {
	channels = SnackAudioMaxNumberChannels(s->devStr);
	devChannels = SnackAudioMaxNumberChannels(s->devStr);
      } else {
	channels = s->nchannels;
	devChannels = s->nchannels;
      }
      if (devChannels < SnackAudioMinNumberChannels(s->devStr)) {
	devChannels = SnackAudioMinNumberChannels(s->devStr);
	globalStreamWidth = devChannels;
      }
    } else {
      globalStreamWidth = channels; /* option -devicechannels used */
      globalStreamWidth = devChannels; /* option -devicechannels used */
    }
  } else {
    if (s->nchannels > globalStreamWidth) {
      globalStreamWidth = s->nchannels;
    }
    channels = s->nchannels;
    devChannels = globalStreamWidth;
  }

  if (s->filterName != NULL) {
    f->si->streamWidth = globalStreamWidth;
    f->si->outWidth    = channels;
    f->si->outWidth    = devChannels;
    f->si->rate        = rate;
    (f->startProc)(f, f->si);
  }

  if (!((wop == IDLE) && (s->writeStatus == IDLE))) {
    s->writeStatus = WRITE;

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-
+













-
+







  ado.debug = s->debug;
  if (s->storeType == SOUND_IN_FILE) {
    s->rwchan = NULL;
  }    
  wop = WRITE;
  s->writeStatus = WRITE;

  if (SnackAudioOpen(&ado, interp, s->devStr, PLAY, rate, channels,
  if (SnackAudioOpen(&ado, interp, s->devStr, PLAY, rate, devChannels,
		     LIN16) != TCL_OK) {
    wop = IDLE;
    s->writeStatus = IDLE;
    return TCL_ERROR;
  }
  if (snackDumpFile) {
    snackDumpCh = Tcl_OpenFileChannel(interp, snackDumpFile, "w", 438);
    Tcl_SetChannelOption(interp, snackDumpCh, "-translation", "binary");
#ifdef TCL_81_API
    Tcl_SetChannelOption(interp, snackDumpCh, "-encoding", "binary");
#endif
  }
  globalRate = rate;
  globalOutWidth = channels;
  globalOutWidth = devChannels;
  globalNWritten = 0;
  if (s->writeStatus == WRITE && s->readStatus == READ) {
    globalNFlowThrough++;
  }
  sCurr = s;
  s->blockingPlay = block;
  corr = 0;
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+
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+
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+
+
+
+
+
+
+
-
+
+







    if ((s->tmpbuf = (short *) ckalloc(s->buffersize * s->sampsize * 
				       s->nchannels)) == NULL) {
      Tcl_AppendResult(interp, "Could not allocate buffer!", NULL);
      return TCL_ERROR;
    }
    
    if (s->storeType == SOUND_IN_FILE) {
      Snack_FileFormat *ff;

      for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
	if (strcmp(s->fileType, ff->name) == 0) {
	  if (SnackOpenFile(ff->openProc, s, interp, &s->rwchan, "w") !=
	      TCL_OK) {
	    return TCL_ERROR;
	  }
	}
      }

      /*
      s->rwchan = Tcl_OpenFileChannel(interp, s->fcname, "w", 420);
	s->rwchan = Tcl_OpenFileChannel(interp, s->fcname, "w", 420);
      */
      if (s->rwchan != NULL) {
	mode = TCL_WRITABLE;
      }
    } else {
      s->rwchan = Tcl_GetChannel(interp, s->fcname, &mode);
    }
    
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-
+







    if (!(mode & TCL_WRITABLE)) {
      Tcl_AppendResult(interp, "channel \"", s->fcname, 
		       "\" wasn't opened for writing", NULL);
      s->rwchan = NULL;
      return TCL_ERROR;
    }
    
    if (PutHeader(s, interp, -1) < 0) {
    if (PutHeader(s, interp, 0, NULL, -1) < 0) {
      return TCL_ERROR;
    }
    s->validStart = 0;
  }
  Snack_ResizeSoundStorage(s, FBLKSIZE);

  if (rop == IDLE || rop == PAUSED) {
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+
+







    SnackAudioClose(&adi);
  }
  if (wop != IDLE) {
    SnackAudioFlush(&ado);
    SnackAudioClose(&ado);
  }
  SnackAudioFree();
  rop = IDLE;
  wop = IDLE;
}

/*
 *----------------------------------------------------------------------
 *
 * SnackCurrentTime --
 *

Changes to snack/generic/jkSoundFile.c.

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1

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-
+







/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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  if (s->debug > 1) Snack_WriteLogInt("  Exit ReadSound", s->length);

  return TCL_OK;
}

int
WriteSound(writeSamplesProc *writeProc, Sound *s, Tcl_Interp *interp,
	   Tcl_Channel ch, Tcl_Obj *obj, int startpos, int len, int hdsize)
	   Tcl_Channel ch, Tcl_Obj *obj, int startpos, int len)
{
  int i = 0, j;
  short sh;
  int   is;
  float fs;
  unsigned char uc;
  char c;
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-
-
+
+

-
-
+
+
+
+

-
+
+
+
+
+
+







-
-
+
+


-
-
+
+







					   (double)(i-startpos)/len);
	  if (res != TCL_OK) {
	    return TCL_ERROR;
	  }
	}
      }
    } else { /* writeProc != NULL */
      int tot = len, n = 0;
      
      int tot = len;

      while (tot > 0) {
	int size = min(tot, FBLKSIZE);
	(writeProc)(s, ch, obj, s->blocks[n], size);
	int size = min(tot, FBLKSIZE/2), res;

	(writeProc)(s, ch, obj, startpos, size);

	tot -= size;
	n++;
	startpos += size;
	res = Snack_ProgressCallback(s->cmdPtr, interp, "Writing sound",
				     1.0-(double)tot/len);
	if (res != TCL_OK) {
	  return TCL_ERROR;
	}
      }
    }
    Snack_ProgressCallback(s->cmdPtr, interp, "Writing sound", 1.0);
  } else { /* ch == NULL */
    unsigned char *p = NULL;
    
    if (useOldObjAPI) {
      Tcl_SetObjLength(obj, hdsize + len * s->sampsize);
      p = (unsigned char *) &obj->bytes[hdsize];
      Tcl_SetObjLength(obj, s->headSize + len * s->sampsize);
      p = (unsigned char *) &obj->bytes[s->headSize];
    } else {
#ifdef TCL_81_API
      p = Tcl_SetByteArrayLength(obj, hdsize +len * s->sampsize);
      p = &p[hdsize];
      p = Tcl_SetByteArrayLength(obj, s->headSize +len * s->sampsize);
      p = &p[s->headSize];
#endif
    }
    for (i = startpos, j = 0; i < startpos + len; i++, j++) {
      short *sp = (short *) p;
      int   *ip = (int *) p;
      float *fp = (float *) p;
      char  *cp = (char *) p;
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+
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+







  s->headSize = s->skipBytes;

  return TCL_OK;
}

static int
PutRawHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	     int len)
	     int objc, Tcl_Obj *CONST objv[], int len)
{
  s->headSize = 0;
  
  return(0);
  return TCL_OK;
}

#define NIST_HEADERSIZE 1024

static int
GetSmpHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	     char *buf)
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  }

  return TCL_OK;
}

static int
PutSmpHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	     int len)
	     int objc, Tcl_Obj *CONST objv[], int len)
{
  int i = 0;
  char buf[HEADBUF];

  if (s->encoding != LIN16) {
    Tcl_AppendResult(interp, "Unsupported encoding format", NULL);
    return -1;
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+
-
-
+
+

+
+







      unsigned char *p = Tcl_SetByteArrayLength(obj, NIST_HEADERSIZE);
      memcpy(p, buf, NIST_HEADERSIZE);
#endif
    }
  }
  s->inByteOrder = SNACK_NATIVE;
  s->swap = 0;
  s->headSize = NIST_HEADERSIZE;

  return(NIST_HEADERSIZE);
  
  return TCL_OK;
}

#define SNACK_SD_INT 20

static int
GetSdHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	    char *buf)
{
  int datastart, len, i, j;
  double freq = 16000.0;
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-
-
-
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+



-
-
+
+







	  char c = buf[i+j];
	  
	  buf[i+j] = buf[i+7-j];
	  buf[i+7-j] = c;
	}
      }
      memcpy(&start, &buf[i], 8);
    }
  }


      if (s->extHead != NULL && s->extHeadType != SNACK_SD_INT) {
	Snack_FileFormat *ff;
	
	for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
	  if (strcmp(s->fileType, ff->name) == 0) {
	    if (ff->freeHeaderProc != NULL) {
	      (ff->freeHeaderProc)(s);
	    }
	  }
	}
      }
      if (s->extHead == NULL) {
	s->extHead = (char *) ckalloc(sizeof(double));
	memcpy(s->extHead, &buf[i], sizeof(double));
	s->extHeadType = SNACK_SD_INT;
      }
    }
  }
  
  s->encoding = LIN16;
  s->sampsize = 2;
  s->nchannels = 1;
  s->samprate = (short) freq;
  s->loadOffset = (int) (start * s->samprate + 0.5);
  s->samprate = (int) freq;
  s->loadOffset = 0; /*(int) (start * s->samprate + 0.5);*/

  if (ch != NULL) {
    Tcl_Seek(ch, 0, SEEK_END);
    len = Tcl_Tell(ch);
    if (len == 0 || len < datastart) {
      Tcl_AppendResult(interp, "Failed reading SD header", NULL);
      return TCL_ERROR;
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1477
















































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1561







+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
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+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+







    }
  }
  s->headSize = datastart;
  SwapIfLE(s);

  return TCL_OK;
}

static int
ConfigSdHeader(Sound *s, Tcl_Interp *interp, int objc,
                Tcl_Obj *CONST objv[])
{
  int index;
  static char *optionStrings[] = {
    "-start_time", NULL
  };
  enum options {
    STARTTIME
  };

  if (s->extHeadType != SNACK_SD_INT || objc < 3) return 0;

  if (objc == 3) { /* get option */
    if (Tcl_GetIndexFromObj(interp, objv[2], optionStrings, "option", 0,
                            &index) != TCL_OK) {
      Tcl_AppendResult(interp, ", or\n", NULL);
      return 0;
    }

    switch ((enum options) index) {
    case STARTTIME:
      {
	double *start = (double *) s->extHead;
        Tcl_SetObjResult(interp, Tcl_NewDoubleObj(*start));
        break;
      }
    }
  }

  return 1;
}

static void
FreeSdHeader(Sound *s)
{
  if (s->debug > 2) Snack_WriteLog("    Enter FreeSdHeader\n");

  if (s->extHead != NULL) {
    ckfree((char *)s->extHead);
    s->extHead = NULL;
    s->extHeadType = 0;
  }
  
  if (s->debug > 2) Snack_WriteLog("    Exit FreeSdHeader\n");
}

#define SND_FORMAT_MULAW_8   1
#define SND_FORMAT_LINEAR_8  2
#define SND_FORMAT_LINEAR_16 3
#define SND_FORMAT_LINEAR_24 4
#define SND_FORMAT_LINEAR_32 5
#define SND_FORMAT_FLOAT     6
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1545



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1629
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1631

1632
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1637
1638
1639







+
+
+






-
+







    break;
  default:
    Tcl_AppendResult(interp, "Unsupported AU format", NULL);
    return TCL_ERROR;
  }
  s->samprate = GetBELong(buf, 16);
  s->nchannels = GetBELong(buf, 20);
  if (hlen < 24) {
    hlen = 24;
  }
  s->headSize = hlen;
  nsamp = GetBELong(buf, 8) / (s->sampsize * s->nchannels);

  if (ch != NULL) {
    Tcl_Seek(ch, 0, SEEK_END);
    nsampfile = (Tcl_Tell(ch) - hlen) / (s->sampsize * s->nchannels);
    if (nsampfile < nsamp || nsamp == 0) {
    if (nsampfile < nsamp || nsamp <= 0) {
      nsamp = nsampfile;
    }
  }
  if (obj != NULL) {
    if (useOldObjAPI) {
      nsamp = (obj->length - hlen) / (s->sampsize * s->nchannels);
    } else {
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1659

1660
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-
+







  SwapIfLE(s);

  return TCL_OK;
}

static int
PutAuHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	    int len)
	    int objc, Tcl_Obj *CONST objv[], int len)
{
  int fmt = 0;
  char buf[HEADBUF];

  if (s->debug > 2) Snack_WriteLog("    Saving AU/SND\n");

  PutBELong(buf, 0, 0x2E736E64);
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1644

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1725


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+
-
-
+
+








+







    }
  }

  if (len == -1) {
    SwapIfLE(s);
  }
  s->inByteOrder = SNACK_BIGENDIAN;
  s->headSize = AU_HEADERSIZE;

  return(AU_HEADERSIZE);
  
  return TCL_OK;
}

#define WAVE_FORMAT_PCM	1
#ifndef WIN
#  define WAVE_FORMAT_IEEE_FLOAT 3
#  define WAVE_FORMAT_ALAW  6
#  define WAVE_FORMAT_MULAW 7
#endif
#define WAVE_EX		(-2)	/* (OxFFFE) in a 2-byte word */

static int
GetHeaderBytes(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, char *buf, 
	       int len)
{
  int rlen = Tcl_Read(ch, &buf[s->firstNRead], len - s->firstNRead);

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+
+
+
+







	  return TCL_ERROR;
	}
      }
      fmt = GetLEShort(buf, i+8);
      s->nchannels = GetLEShort(buf, i+10);
      s->samprate  = GetLELong(buf, i+12);
      s->sampsize  = GetLEShort(buf, i+22) / 8;

      /* For WAVE-EX, the format is the first two bytes of the GUID */
      if (fmt == WAVE_EX)
	fmt = GetLEShort(buf, i+32);

      switch (fmt) {
      case WAVE_FORMAT_PCM:
	if (s->sampsize == 1) {
	  s->encoding = LIN8OFFSET;
	} else if (s->sampsize == 2) {
	  s->encoding = LIN16;
1813
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1821
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1906
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1908
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-
+







  return TCL_OK;
}

#define SNACK_WAV_HEADERSIZE 44

static int
PutWavHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	     int len)
	     int objc, Tcl_Obj *CONST objv[], int len)
{
  char buf[HEADBUF];

  sprintf(&buf[0], "RIFF");
  if (len != -1) {
    PutLELong(buf, 4, len * s->sampsize * s->nchannels + 36);
  } else {
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1878
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1963
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+
-
-
+
+







#ifdef TCL_81_API
      unsigned char *p = Tcl_SetByteArrayLength(obj, SNACK_WAV_HEADERSIZE);
      memcpy(p, buf, SNACK_WAV_HEADERSIZE);
#endif
    }
  }
  s->inByteOrder = SNACK_LITTLEENDIAN;
  s->headSize = SNACK_WAV_HEADERSIZE;

  return(SNACK_WAV_HEADERSIZE);
  
  return TCL_OK;
}

/* See http://www.borg.com/~jglatt/tech/aiff.htm */

static unsigned long
ConvertFloat(unsigned char *buffer)
{
1923
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1929



1930
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1967



1968
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2019
2020
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2033
2034
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2036
2037
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2039

2040
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2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067







+
+
+




















-
+

















+
+
+







  if (littleEndian) {
    value = Snack_SwapLong(value);
  }
  buffer[0] = 0x40;
  memcpy(buffer + 2, &value, sizeof(long));
}

#define ICEILV(n,m)	(((n) + ((m) - 1)) / (m))	/* int n,m >= 0 */
#define RNDUPV(n,m)	((m) * ICEILV (n, m))		/* Round up */

static int
GetAiffHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	      char *buf)
{
  int bits = 0, offset = 0, i = 12, chunkLen = 4;

  if (s->debug > 2) Snack_WriteLog("    Reading AIFF header\n");
  
  /* buf[] = "FORMxxxxAIFF" */

  while (1) {
    if (strncasecmp("COMM", &buf[i], strlen("COMM")) == 0) {
      chunkLen = GetBELong(buf, i + 4) + 8;
      if (s->firstNRead < i + chunkLen) {
	if (GetHeaderBytes(s, interp, ch, buf, i + chunkLen) != TCL_OK) {
	  return TCL_ERROR;
	}
      }
      s->nchannels = GetBEShort(buf, i + 8);
      bits = GetBEShort(buf, i + 14);
      
      bits = RNDUPV (bits, 8);
      switch (bits) {
      case 8:
	s->encoding = LIN8;
	s->sampsize = 1;
	break;
      case 16:
	s->encoding = LIN16;
	s->sampsize = 2;
	break;
      case 24:
	s->encoding = LIN24;
	s->sampsize = 3;
	break;
      case 32:
	s->encoding = LIN32;
	s->sampsize = 4;
	break;
      default:
	Tcl_AppendResult(interp, "Unsupported AIFF format", NULL);
	return TCL_ERROR;
      }
      s->samprate = ConvertFloat((unsigned char *)&buf[i+16]);
      if (s->debug > 3) {
	Snack_WriteLogInt("      COMM chunk parsed", chunkLen);
      }
    } else if (strncasecmp("SSND", &buf[i], strlen("SSND")) == 0) {
      chunkLen = 16;
2004
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2006
2007
2008
2009
2010
2011

2012
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2015
2016
2017
2018
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2099
2100
2101
2102
2103

2104
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2109
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2111







-
+







  return TCL_OK;
}

#define SNACK_AIFF_HEADERSIZE 54

int
PutAiffHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	      int len)
	      int objc, Tcl_Obj *CONST objv[], int len)
{
  char buf[HEADBUF];

  if (s->encoding == LIN8OFFSET || s->encoding == ALAW ||
      s->encoding == MULAW || s->encoding == SNACK_FLOAT) {
    Tcl_AppendResult(interp, "Unsupported encoding format", NULL);
    return -1;
2052
2053
2054
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2056
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2058

2059
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2061
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2150
2151
2152


2153
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+
-
-
+
+







#ifdef TCL_81_API
      unsigned char *p = Tcl_SetByteArrayLength(obj, SNACK_AIFF_HEADERSIZE);
      memcpy(p, buf, SNACK_AIFF_HEADERSIZE);
#endif
    }
  }
  s->inByteOrder = SNACK_BIGENDIAN;
  s->headSize = SNACK_AIFF_HEADERSIZE;

  return(SNACK_AIFF_HEADERSIZE);
  
  return TCL_OK;
}

static int
GetCslHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	     char *buf)
{
  int tmp1, tmp2, nsamp = 0, nsampfile, i = 12, chunkLen;
2106
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2110
2111
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2113
2114

2115
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2121

2122
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2207
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2213

2214
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2216
2217
2218
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2220
2221
2222







-

+





-

+







      if (tmp1 != -1 && tmp2 != -1) {
	s->nchannels = 2;
      }
      if (s->debug > 3) {
	Snack_WriteLogInt("      HDR8 block parsed", chunkLen);
      }
    } else if (strncasecmp("SDA_", &buf[i], strlen("SDA_")) == 0) {
      nsamp = GetLELong(buf, i + 4) / (s->sampsize * s->nchannels);
      s->nchannels  = 1;
      nsamp = GetLELong(buf, i + 4) / (s->sampsize * s->nchannels);
      if (s->debug > 3) {
	Snack_WriteLogInt("      SDA_ block parsed", nsamp);
      }
      break;
    } else if (strncasecmp("SD_B", &buf[i], strlen("SD_B")) == 0) {
      nsamp = GetLELong(buf, i + 4) / (s->sampsize * s->nchannels);
      s->nchannels  = 1;
      nsamp = GetLELong(buf, i + 4) / (s->sampsize * s->nchannels);
      if (s->debug > 3) {
	Snack_WriteLogInt("      SD_B block parsed", nsamp);
      }
      break;
    } else if (strncasecmp("SDAB", &buf[i], strlen("SDAB")) == 0) {
      nsamp = GetLELong(buf, i + 4) / (s->sampsize * s->nchannels);
      if (s->debug > 3) {
2188
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2194
2195

2196
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2289
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2297
2298
2299

2300
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2302
2303
2304
2305
2306
2307







-
+










-
+







}

#define SNACK_CSL_HEADERSIZE 88
#define CSL_DATECOMMAND "clock format [clock seconds] -format {%b %d %T %Y}"

static int
PutCslHeader(Sound *s, Tcl_Interp *interp, Tcl_Channel ch, Tcl_Obj *obj,
	     int len)
	     int objc, Tcl_Obj *CONST objv[], int len)
{
  char buf[HEADBUF];

  if (s->encoding != LIN16) {
    Tcl_AppendResult(interp, "Unsupported encoding format", NULL);
    return -1;
  }
  
  sprintf(&buf[0], "FORMDS16");
  if (len != -1) {
    PutLELong(buf, 8, len * s->sampsize * s->nchannels + 78);
    PutLELong(buf, 8, len * s->sampsize * s->nchannels + 76);
  } else {
    SwapIfBE(s);
    PutLELong(buf, 8, 0);
  }
  sprintf(&buf[12], "HEDR");
  PutLELong(buf, 16, 32);
  Tcl_GlobalEvalObj(s->interp, Tcl_NewStringObj(CSL_DATECOMMAND, -1));
2249
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2251
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2254
2255

2256
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2258
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2264
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2366

2367
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2374







+
-
-
+
+






+
+
+
+
+
+
+

-
+







#ifdef TCL_81_API
      unsigned char *p = Tcl_SetByteArrayLength(obj, SNACK_CSL_HEADERSIZE);
      memcpy(p, buf, SNACK_CSL_HEADERSIZE);
#endif
    }
  }
  s->inByteOrder = SNACK_LITTLEENDIAN;
  s->headSize = SNACK_CSL_HEADERSIZE;

  return(SNACK_CSL_HEADERSIZE);
  
  return TCL_OK;
}

int
SnackOpenFile(openProc *openProc, Sound *s, Tcl_Interp *interp,
	      Tcl_Channel *ch, char *mode)
{
  int permissions;

  if (strcmp(mode, "r") == 0) {
    permissions = 0;
  } else {
    permissions = 420;
  }
  if (openProc == NULL) {
    if ((*ch = Tcl_OpenFileChannel(interp, s->fcname, mode, 0)) == 0) {
    if ((*ch = Tcl_OpenFileChannel(interp, s->fcname, mode, permissions))==0) {
      return TCL_ERROR;
    }
    Tcl_SetChannelOption(interp, *ch, "-translation", "binary");
#ifdef TCL_81_API
    Tcl_SetChannelOption(interp, *ch, "-encoding", "binary");
#endif
  } else {
2350
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2358
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2361

2362
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2378
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2382

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2456
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2458

2459
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2461
2462

2463
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2471

2472
2473
2474




2475

2476
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2480

2481
2482
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2486
2487
2488
2489
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2491
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2493
2494
2495

2496
2497
2498
2499
2500
2501
2502
2503







-
+



-
+






+

-
+


-
-
-
-

-
+
+



-
+

+


+









-
+







  if (s->debug > 1) Snack_WriteLog("  Exit LoadSound\n");

  return(s->fileType);
}

int
SaveSound(Sound *s, Tcl_Interp *interp, char *filename, Tcl_Obj *obj,
	  int startpos, int len, char *type)
	  int objc, Tcl_Obj *CONST objv[], int startpos, int len, char *type)
{
  Tcl_Channel ch = NULL;
  Snack_FileFormat *ff;
  int hdsize;
  char *tmp = s->fcname;

  if (s->debug > 1) Snack_WriteLog("  Enter SaveSound\n");

  for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
    if (strcmp(type, ff->name) == 0) {
      if (ff->putHeaderProc != NULL) {
	s->fcname = filename;
	if (filename != NULL) {
	  if ((ch = Tcl_OpenFileChannel(interp, filename, "w", 420)) == 0) {
	  if (SnackOpenFile(ff->openProc, s, interp, &ch, "w") != TCL_OK) {
	    return TCL_ERROR;
	  }
	  Tcl_SetChannelOption(interp, ch, "-translation", "binary");
#ifdef TCL_81_API
	  Tcl_SetChannelOption(interp, ch, "-encoding", "binary");
#endif
	}
	if ((hdsize = (ff->putHeaderProc)(s, interp, ch, obj, len)) < 0) {
	if ((ff->putHeaderProc)(s, interp, ch, obj, objc, objv, len)
	    != TCL_OK) {
	  return TCL_ERROR;
	}
	if (WriteSound(ff->writeProc, s, interp, ch, obj, startpos,
		       len, hdsize) != TCL_OK) {
		       len) != TCL_OK) {
	  Tcl_AppendResult(interp, "Error while writing", NULL);
	  s->fcname = tmp;
	  return TCL_ERROR;
	}
	s->fcname = tmp;
      } else {
	Tcl_AppendResult(interp, "Unsupported save format", NULL);
	return TCL_ERROR;
      }
      break;
    }
  }

  if (ch != NULL) {
    Tcl_Close(interp, ch);
    SnackCloseFile(ff->closeProc, s, interp, &ch);
  }

  if (s->debug > 1) Snack_WriteLog("  Exit SaveSound\n");

  return TCL_OK;
}

2566
2567
2568
2569
2570
2571
2572























2573
2574
2575
2576
2577

2578

2579
2580
2581
2582
2583
2584
2585
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701

2702
2703
2704
2705
2706
2707
2708
2709
2710
2711







+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+




-
+

+







    Tcl_SetObjResult(interp, Tcl_NewStringObj(filetype, -1));
  }

  if (s->debug > 0) Snack_WriteLog("Exit readCmd\n");

  return TCL_OK;
}

void
Snack_RemoveOptions(int objc, Tcl_Obj *CONST objv[], char **subOptionStrings,
		    int *newobjc, Tcl_Obj **newobjv)
{
  int arg, n = 0;
  Tcl_Obj **new = NULL;

  if ((new = (Tcl_Obj **) ckalloc(sizeof(Tcl_Obj *) * objc)) == NULL) {
    return;
  }
  for (arg = 0; arg < objc; arg+=2) {
    int index;
    
    if (Tcl_GetIndexFromObj(NULL, objv[arg], subOptionStrings,
			    NULL, 0, &index) != TCL_OK) {
      new[n++] = Tcl_DuplicateObj(objv[arg]);
      if (n < objc) new[n++] = Tcl_DuplicateObj(objv[arg+1]);
    }
  }
  *newobjc = n;
  *newobjv = (Tcl_Obj *) new;
}

int
writeCmd(Sound *s, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
{
  int startpos = 0, endpos = s->length, arg, len;
  int startpos = 0, endpos = s->length, arg, len, newobjc;
  char *string, *filetype = NULL;
  Tcl_Obj **newobjv = NULL;
  static char *subOptionStrings[] = {
    "-start", "-end", "-fileformat", "-progress", "-byteorder", NULL
  };
  enum subOptions {
    START, END, FILEFORMAT, PROGRESS, BYTEORDER
  };

2596
2597
2598
2599
2600
2601
2602
2603

2604
2605

2606
2607
2608
2609
2610
2611
2612
2722
2723
2724
2725
2726
2727
2728

2729
2730

2731
2732
2733
2734
2735
2736
2737
2738







-
+

-
+







    Tcl_DecrRefCount(s->cmdPtr);
    s->cmdPtr = NULL;
  }

  for (arg = 3; arg < objc; arg+=2) {
    int index;
	
    if (Tcl_GetIndexFromObj(interp, objv[arg], subOptionStrings,
    if (Tcl_GetIndexFromObj(NULL, objv[arg], subOptionStrings,
			    "option", 0, &index) != TCL_OK) {
      return TCL_ERROR;
      continue;
    }
	
    if (arg + 1 == objc) {
      Tcl_AppendResult(interp, "No argument given for ",
		       subOptionStrings[index], " option", (char *) NULL);
      return TCL_ERROR;
    }
2660
2661
2662
2663
2664
2665
2666
2667




2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684


2685
2686
2687






2688
2689
2690
2691
2692
2693
2694
2786
2787
2788
2789
2790
2791
2792

2793
2794
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2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812

2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830







-
+
+
+
+
















-
+
+



+
+
+
+
+
+







  }
  len = s->length;
  if (endpos >= len) endpos = len;
  if (endpos < 0)    endpos = len;
  if (endpos > startpos) len -= (len - endpos);
  if (startpos > endpos) return TCL_OK;
  if (startpos > 0) len -= startpos; else startpos = 0;
      

  Snack_RemoveOptions(objc-3, objv+3, subOptionStrings, &newobjc,
		      (Tcl_Obj **) &newobjv);

  if (objc < 3) {
    Tcl_AppendResult(interp, "No file name given", NULL);
    return TCL_ERROR;
  }
  string = Tcl_GetStringFromObj(objv[2], NULL);
  if (filetype == NULL) {
    filetype = NameGuessFileType(string);
  }
  if (strlen(string) == 0) {
    return TCL_OK;
  }
  if (s->storeType != SOUND_IN_MEMORY) {
    if (s->linkInfo.linkCh == NULL) {
      OpenLinkedFile(s, &s->linkInfo);
    }
  }
  if (SaveSound(s, interp, string, NULL, startpos, len, filetype)==TCL_ERROR) {
  if (SaveSound(s, interp, string, NULL, newobjc, (Tcl_Obj **CONST) newobjv,
		startpos, len, filetype) == TCL_ERROR) {
    return TCL_ERROR;
  }


  for (arg = 0; arg <newobjc; arg++) {
    Tcl_DecrRefCount(newobjv[arg]);
  }
  ckfree((char *)newobjv);

  if (s->debug > 0) { Snack_WriteLog("Exit writeCmd\n"); }

  return TCL_OK;
} /* writeCmd */

int
dataCmd(Sound *s, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
2768
2769
2770
2771
2772
2773
2774
2775

2776
2777
2778
2779
2780
2781
2782
2904
2905
2906
2907
2908
2909
2910

2911
2912
2913
2914
2915
2916
2917
2918







-
+







    len = s->length;
    if (endpos >= len) endpos = len;
    if (endpos < 0)    endpos = len;
    if (endpos > startpos) len -= (len - endpos);
    if (startpos > endpos) return TCL_OK;
    if (startpos > 0) len -= startpos; else startpos = 0;

    if (SaveSound(s, interp, NULL, new, startpos, len, filetype)
    if (SaveSound(s, interp, NULL, new, objc-2, objv+2, startpos, len,filetype)
	== TCL_ERROR) {
      return TCL_ERROR;
    }
    Tcl_SetObjResult(interp, new);
  } else { /* variable -> sound */
    int arg, startpos = 0, endpos = -1;
    char *filetype;
2909
2910
2911
2912
2913
2914
2915
2916

2917
2918
2919
2920
2921



2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937


2938
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2941
2942
2943
2944
3045
3046
3047
3048
3049
3050
3051

3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085







-
+





+
+
+
















+
+







} /* dataCmd */

int
GetHeader(Sound *s, Tcl_Interp *interp, Tcl_Obj *obj)
{
  Snack_FileFormat *ff;
  Tcl_Channel ch = NULL;
  int status = TCL_OK;
  int status = TCL_OK, openedOk = 0;
  int buflen = max(HEADBUF, NFIRSTSAMPLES * 2), len = 0;

  if (s->guessEncoding) {
    s->swap = 0;
  }
  if (s->tmpbuf != NULL) {
    ckfree((char *)s->tmpbuf);
  }
  if ((s->tmpbuf = (short *) ckalloc(buflen)) == NULL) {
    Tcl_AppendResult(interp, "Could not allocate buffer!", NULL);
    return TCL_ERROR;
  }
  if (obj == NULL) {
    ch = Tcl_OpenFileChannel(interp, s->fcname, "r", 0);
    if (ch != NULL) {
      Tcl_SetChannelOption(interp, ch, "-translation", "binary");
#ifdef TCL_81_API
      Tcl_SetChannelOption(interp, ch, "-encoding", "binary");
#endif
      if ((len = Tcl_Read(ch, (char *)s->tmpbuf, buflen)) > 0) {
	Tcl_Close(interp, ch);
	ch = NULL;
      }
    } else {
      ckfree((char *)s->tmpbuf);
      s->tmpbuf = NULL;
      return TCL_ERROR;
    }
  } else {
    unsigned char *ptr = NULL;

    if (useOldObjAPI) {
      len = min(obj->length, buflen);
2958
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2964

2965
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3113

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3115

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3119
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3129

3130
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3132
3133
3134
3135
3136
3137

3138
3139
3140
3141
3142
3143
3144
3145
3146







+







-
+

-














-
+
+






-
+
+







  }
  s->firstNRead = len;

  for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
    if (strcmp(s->fileType, ff->name) == 0) {
      if (obj == NULL) {
	status = SnackOpenFile(ff->openProc, s, interp, &ch, "r");
	if (status == TCL_OK) openedOk = 1;
      }
      if (status == TCL_OK) {
	status = (ff->getHeaderProc)(s, interp, ch, obj, (char *)s->tmpbuf);
      }
      if (strcmp(s->fileType, RAW_STRING) == 0 && s->guessEncoding) {
	GuessEncoding(s, (unsigned char *)s->tmpbuf, len);
      }
      if (obj == NULL && status == TCL_OK) {
      if (obj == NULL && openedOk == 1) {
	status = SnackCloseFile(ff->closeProc, s, interp, &ch);
	/*	Tcl_Close(interp, ch);*/
      }
      ckfree((char *)s->tmpbuf);
      s->tmpbuf = NULL;

      return(status);
    }
  }
  ckfree((char *)s->tmpbuf);
  s->tmpbuf = NULL;

  return TCL_OK;
}

int
PutHeader(Sound *s, Tcl_Interp *interp, int length)
PutHeader(Sound *s, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[],
	  int length)
{
  Snack_FileFormat *ff;

  for (ff = snackFileFormats; ff != NULL; ff = ff->nextPtr) {
    if (strcmp(s->fileType, ff->name) == 0) {
      if (ff->putHeaderProc != NULL) {
	return (ff->putHeaderProc)(s, interp, s->rwchan, NULL, length);
	return (ff->putHeaderProc)(s, interp, s->rwchan, NULL, objc, objv,
				   length);
      }
      break;
    }
  }
  return 0;
}

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3068
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3077







3078
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3087

3088
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3202
3203
3204
3205
3206
3207
3208


3209
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3214
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3223
3224
3225
3226
3227
3228
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3230
3231
3232
3233
3234
3235
3236
3237
3238







-
-
+
+

-
+

-
-
-
-
-
-
-
+
+
+
+
+
+
+










+







		    writeSamplesProc *writeProc, seekProc *seekProc)
{
  Snack_FileFormat *ff = (Snack_FileFormat *)ckalloc(sizeof(Snack_FileFormat));

  if (ff == NULL) {
    return TCL_ERROR;
  }
  ff->name = name;
  ff->guessProc  = guessProc;
  ff->name          = name;
  ff->guessProc     = guessProc;
  ff->getHeaderProc = getHeadProc;
  ff->extProc    = extProc;
  ff->extProc       = extProc;
  ff->putHeaderProc = putHeadProc;
  ff->openProc   = openProc;
  ff->closeProc  = closeProc;
  ff->readProc   = readProc;
  ff->writeProc  = writeProc;
  ff->seekProc   = seekProc;
  ff->nextPtr    = snackFileFormats;
  snackFileFormats = ff;
  ff->openProc      = openProc;
  ff->closeProc     = closeProc;
  ff->readProc      = readProc;
  ff->writeProc     = writeProc;
  ff->seekProc      = seekProc;
  ff->nextPtr       = snackFileFormats;
  snackFileFormats  = ff;

  return TCL_OK;
}

Snack_FileFormat snackRawFormat = {
  RAW_STRING,
  GuessRawFile,
  GetRawHeader,
  NULL,
  PutRawHeader,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  (Snack_FileFormat *) NULL
3102
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3104
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3106
3107
3108

3109
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3111
3112
3113
3114
3115
3116
3117

3118
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3126
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3128
3129
3130
3131
3132
3133
3134
3135
3136
3137

3138
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3141
3142
3143
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3145
3146
3147
3148
3149
3150
3151
3152
3153


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3156
3157
3158
3159
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3161
3162

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3175
3176
3177
3178
3179
3180
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3182

3183
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3186
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3189
3190
3191
3192

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3197
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3349
3350







+









+




















+















-
+
+









+




















+










+







  NULL,
  OpenMP3File,
  CloseMP3File,
  ReadMP3Samples,
  NULL,
  SeekMP3File,
  FreeMP3Header,
  ConfigMP3Header,
  (Snack_FileFormat *) NULL
};

Snack_FileFormat snackSmpFormat = {
  SMP_STRING,
  GuessSmpFile,
  GetSmpHeader,
  ExtSmpFile,
  PutSmpHeader,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  (Snack_FileFormat *) NULL
};

Snack_FileFormat snackCslFormat = {
  CSL_STRING,
  GuessCslFile,
  GetCslHeader,
  ExtCslFile,
  PutCslHeader,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  (Snack_FileFormat *) NULL
};

Snack_FileFormat snackSdFormat = {
  SD_STRING,
  GuessSdFile,
  GetSdHeader,
  ExtSdFile,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  FreeSdHeader,
  ConfigSdHeader,
  (Snack_FileFormat *) NULL
};

Snack_FileFormat snackAiffFormat = {
  AIFF_STRING,
  GuessAiffFile,
  GetAiffHeader,
  ExtAiffFile,
  PutAiffHeader,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  (Snack_FileFormat *) NULL
};

Snack_FileFormat snackAuFormat = {
  AU_STRING,
  GuessAuFile,
  GetAuHeader,
  ExtAuFile,
  PutAuHeader,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  (Snack_FileFormat *) NULL
};

Snack_FileFormat snackWavFormat = {
  WAV_STRING,
  GuessWavFile,
  GetWavHeader,
  ExtWavFile,
  PutWavHeader,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  NULL,
  (Snack_FileFormat *) NULL
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3413
3414

3415
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3417

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3563
3564

3565
3566
3567

3568
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-
+


-
+

    }
    infoPtr->filePos = index;

    return(infoPtr->buffer[pos]);
  }
}

SnackFileFormat *
Snack_FileFormat *
Snack_GetFileFormats()
{
  return (SnackFileFormat *) snackFileFormats;
  return snackFileFormats;
}

Changes to snack/generic/jkSoundProc.c.

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1

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8
9

-
+







/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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206
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213
214
215
216
217
218
219







-
+

+
+




+
+
+
+
+
-
+
+



+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+




+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+















-
+
+


-
+
+

+
+
+
+







    Tcl_AppendResult(interp, str, NULL);
  }
  Tcl_AppendResult(interp, "}", NULL);
  return TCL_ERROR;
}

int
CheckWinlen(Tcl_Interp *interp, int winlen)
CheckWinlen(Tcl_Interp *interp, int winlen, int fftlen)
{
  char str[10];

  if (winlen < 1) {
    Tcl_AppendResult(interp, "-winlength must be > 0", NULL);
    return TCL_ERROR;
  }
  if (winlen > fftlen) {
    Tcl_AppendResult(interp, "-winlength must be <= fftlength (", NULL);
    sprintf(str, "%d)", fftlen);
    Tcl_AppendResult(interp, str, NULL);
    return TCL_ERROR;
  
  }

  return TCL_OK;
}

void
GetFloatMonoSig(Sound *s,SnackLinkedFileInfo *info,
		float *sig, int beg, int len, int channel) {
  /* sig buffer must be allocated, file must be open! */

  int i;

  if (s->storeType == SOUND_IN_MEMORY) {
    if (s->nchannels == 1 || channel != -1) {
      int p = beg * s->nchannels + channel;

      for (i = 0; i < len; i++) {
	sig[i] = (float) (FSAMPLE(s, p));
	p += s->nchannels;
      }
    } else {
      int c;

      for (i = 0; i < len; i++) {
	sig[i] = 0.0;
      }
      for (c = 0; c < s->nchannels; c++) {
	int p = beg * s->nchannels + c;
	  
	for (i = 0; i < len; i++) {
	  sig[i] += (float) (FSAMPLE(s, p));
	  p += s->nchannels;
	}
      }
      for (i = 0; i < len; i++) {
	sig[i] /= s->nchannels;
      }
    }
  } else { /* storeType != SOUND_IN_MEMORY */
    if (s->nchannels == 1 || channel != -1) {
      int p = beg * s->nchannels + channel;

      for (i = 0; i < len; i++) {
	sig[i] = (float) (GetSample(info, p));
	p += s->nchannels;
      }
    } else {
      int c;
	
      for (i = 0; i < len; i++) {
	sig[i] = 0.0;
      }
      for (c = 0; c < s->nchannels; c++) {
	int p = beg * s->nchannels + c;
	  
	for (i = 0; i < len; i++) {
	  sig[i] += (float) (GetSample(info, p));
	  p += s->nchannels;
	}
      }
      for (i = 0; i < len; i++) {
	sig[i] /= s->nchannels;
      }
    }
  }
}

static float xfft[NMAX];
static float ffts[NMAX];
static float hamwin[NMAX];
#define SNACK_DEFAULT_DBPWINTYPE SNACK_WIN_HAMMING
#define SNACK_DEFAULT_DBP_LPC_ORDER 20
#define SNACK_MAX_LPC_ORDER  40

int
CheckLPCorder(Tcl_Interp *interp, int lpcorder)
{
  char str[10];
  if (lpcorder < 1) {
    Tcl_AppendResult(interp, "-lpcorder must be > 0", NULL);
    return TCL_ERROR;
  }
  if (lpcorder > SNACK_MAX_LPC_ORDER) {
    Tcl_AppendResult(interp, "-lpcorder must be <= ", NULL);
    sprintf(str, "%d)", SNACK_MAX_LPC_ORDER);
    Tcl_AppendResult(interp, str, NULL);
    return TCL_ERROR;
  }
  
  return TCL_OK;
}

int
dBPowerSpectrumCmd(Sound *s, Tcl_Interp *interp, int objc,
		   Tcl_Obj *CONST objv[])
{
  double dpreemph = 0.0;
  float preemph = 0.0;
  int i, j, n = 0, arg;
  int channel = 0, winlen = 256, fftlen = 512;
  int startpos = 0, endpos = -1, skip = -1;
  Tcl_Obj *list;
  SnackLinkedFileInfo info;
  SnackWindowType wintype = SNACK_DEFAULT_DBPWINTYPE;
  static char *subOptionStrings[] = {
    "-start", "-end", "-channel", "-fftlength", "-winlength", "-windowlength",
    "-preemphasisfactor", "-skip", "-windowtype", NULL
    "-preemphasisfactor", "-skip", "-windowtype", "-analysistype",
    "-lpcorder", NULL
  };
  enum subOptions {
    START, END, CHANNEL, FFTLEN, WINLEN, WINDOWLEN, PREEMPH, SKIP, WINTYPE
    START, END, CHANNEL, FFTLEN, WINLEN, WINDOWLEN, PREEMPH, SKIP, WINTYPE,
    ANATYPE, LPCORDER
  };
  float *sig_lpc;
  float presample = 0.0;
  int siglen, type = 0, lpcOrder = SNACK_DEFAULT_DBP_LPC_ORDER;
  float g_lpc;

  if (s->debug > 0) Snack_WriteLog("Enter dBPowerSpectrumCmd\n");

  for (arg = 2; arg < objc; arg += 2) {
    int index;
	
    if (Tcl_GetIndexFromObj(interp, objv[arg], subOptionStrings,
180
181
182
183
184
185
186























187
188
189
190
191
192

193
194
195
196
197
198
199
276
277
278
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281
282
283
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288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310

311
312
313
314
315
316
317
318







+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+





-
+







    case WINTYPE:
      {
	char *str = Tcl_GetStringFromObj(objv[arg+1], NULL);
	if (GetWindowType(interp, str, &wintype) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    case ANATYPE:
      {
	int len;
 	char *str = Tcl_GetStringFromObj(objv[arg+1], &len);
	
	if (strncasecmp(str, "lpc", len) == 0) {
	  type = 1;
	} else if (strncasecmp(str, "fft", len) == 0) {
	  type = 0;
	} else {
	  Tcl_AppendResult(interp, "-type should be FFT or LPC", (char *)NULL);
	  return TCL_ERROR;
	}
	break;
      }
    case LPCORDER:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &lpcOrder) != TCL_OK)
	  return TCL_ERROR;
	if (CheckLPCorder(interp, lpcOrder) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    }
  }

  if (CheckFFTlen(interp, fftlen) != TCL_OK) return TCL_ERROR;

  if (CheckWinlen(interp, winlen) != TCL_OK) return TCL_ERROR;
  if (CheckWinlen(interp, winlen, fftlen) != TCL_OK) return TCL_ERROR;

  preemph = (float) dpreemph;

  if (startpos < 0 || startpos > s->length - fftlen) {
    Tcl_AppendResult(interp, "FFT window out of bounds", NULL);
    return TCL_ERROR;
  }
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226


227
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265
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272


273
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276
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296
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300







































































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359



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  Snack_InitWindow(hamwin, winlen, fftlen, wintype);

  Snack_InitFFT(fftlen);

  if (skip < 1) {
    skip = fftlen;
  }
  n = (endpos - startpos) / skip;
  siglen = endpos - startpos;
  n = siglen / skip;
  if (n < 1) {
    n = 1;
  }

  if (s->nchannels == 1) {
    channel = 0;
  }

  for (j = 0; j < n; j++) {
    if (s->storeType == SOUND_IN_MEMORY) {
      if (s->nchannels == 1 || channel != -1) {
	int p = (startpos + j * skip) * s->nchannels + channel;

	for (i = 0; i < fftlen; i++) {
	  xfft[i] = (float) ((FSAMPLE(s, p + s->nchannels)
  if (type != 0 && n > 0) { /* LPC + FFT */
    if (siglen < fftlen) siglen = fftlen;
    sig_lpc = (float *) ckalloc(siglen * sizeof(float));
			      - preemph * FSAMPLE(s, p))
			     * hamwin[i]);
	    p += s->nchannels;
	}

      } else {
	int c;
	
    GetFloatMonoSig(s, &info, sig_lpc, startpos, siglen, channel);
	for (i = 0; i < fftlen; i++) {
	  xfft[i] = 0.0;
	}
    if (startpos > 0)
      GetFloatMonoSig(s, &info, &presample, startpos - 1, 1, channel);
    PreEmphase(sig_lpc, presample, siglen, preemph);

	for (c = 0; c < s->nchannels; c++) {
	  int p = (startpos + j * skip) * s->nchannels + c;
	  
	  for (i = 0; i < fftlen; i++) {
    /* windowing signal to make lpc look more like the fft spectrum ??? */
    for (i = 0; i < winlen/2; i++) {
	    xfft[i] += (float) ((FSAMPLE(s, p + s->nchannels)
				 - preemph * FSAMPLE(s, p))
				* hamwin[i]);
      sig_lpc[i] = sig_lpc[i] * hamwin[i];
	    p += s->nchannels;
	  }
    }
	}
	for (i = 0; i < fftlen; i++) {
    for (i = winlen/2; i < winlen; i++) {
	  xfft[i] /= s->nchannels;
	}
      sig_lpc[i + siglen - winlen] = sig_lpc[i + siglen - winlen] * hamwin[i];
    }
      }
    } else { /* storeType != SOUND_IN_MEMORY */
      if (s->nchannels == 1 || channel != -1) {
	int p = (startpos + j * skip) * s->nchannels + channel;

	for (i = 0; i < fftlen; i++) {
	  xfft[i] = (float) ((GetSample(&info, p + s->nchannels)
			      - preemph * GetSample(&info, p))
    g_lpc = LpcAnalysis(sig_lpc, siglen, xfft, lpcOrder);
    ckfree((char *) sig_lpc);
			     * hamwin[i]);
	  p += s->nchannels;
	}

      } else {
	int c;
	
	for (i = 0; i < fftlen; i++) {
	  xfft[i] = 0.0;
	}
    for (i = 0; i <= lpcOrder; i++) {
      /* the factor is a guess, try looking for analytical value */
      xfft[i] = xfft[i] * 5000000000.0f;
    }
	for (c = 0; c < s->nchannels; c++) {
	  int p = (startpos + j * skip) * s->nchannels + c;
	  
	  for (i = 0; i < fftlen; i++) {
    for (i = lpcOrder + 1; i < fftlen; i++) {
	    xfft[i] += (float) ((GetSample(&info, p + s->nchannels)
				 - preemph * GetSample(&info, p))
				* hamwin[i]);
	    p += s->nchannels;
	  }
	}
	for (i = 0; i < fftlen; i++) {
	  xfft[i] /= s->nchannels;
	}
      }
      xfft[i] = 0.0;
    }
    
    }

    Snack_DBPowerSpectrum(xfft);
    
    for (i = 0; i < fftlen/2; i++) {
      ffts[i] = -xfft[i];
    }

  } else {  /* usual FFT */

    for (j = 0; j < n; j++) {
      if (s->storeType == SOUND_IN_MEMORY) {
	if (s->nchannels == 1 || channel != -1) {
	  int p = (startpos + j * skip) * s->nchannels + channel;
	  
	  for (i = 0; i < fftlen; i++) {
	    xfft[i] = (float) ((FSAMPLE(s, p + s->nchannels)
				- preemph * FSAMPLE(s, p))
			       * hamwin[i]);
	    p += s->nchannels;
	  }
	} else {
	  int c;
	  
	  for (i = 0; i < fftlen; i++) {
	    xfft[i] = 0.0;
	  }
	  for (c = 0; c < s->nchannels; c++) {
	    int p = (startpos + j * skip) * s->nchannels + c;
	    
	    for (i = 0; i < fftlen; i++) {
	      xfft[i] += (float) ((FSAMPLE(s, p + s->nchannels)
				   - preemph * FSAMPLE(s, p))
				  * hamwin[i]);
	      p += s->nchannels;
	    }
	  }
	  for (i = 0; i < fftlen; i++) {
	    xfft[i] /= s->nchannels;
	  }
	}
      } else { /* storeType != SOUND_IN_MEMORY */
	if (s->nchannels == 1 || channel != -1) {
	  int p = (startpos + j * skip) * s->nchannels + channel;
	  
	  for (i = 0; i < fftlen; i++) {
	    xfft[i] = (float) ((GetSample(&info, p + s->nchannels)
				- preemph * GetSample(&info, p))
			       * hamwin[i]);
	    p += s->nchannels;
	  }
	} else {
	  int c;
	  
	  for (i = 0; i < fftlen; i++) {
	    xfft[i] = 0.0;
	  }
	  for (c = 0; c < s->nchannels; c++) {
	    int p = (startpos + j * skip) * s->nchannels + c;
	    
	    for (i = 0; i < fftlen; i++) {
	      xfft[i] += (float) ((GetSample(&info, p + s->nchannels)
				   - preemph * GetSample(&info, p))
				  * hamwin[i]);
	      p += s->nchannels;
	    }
	  }
	  for (i = 0; i < fftlen; i++) {
	    xfft[i] /= s->nchannels;
	  }
	}
      }
      
      Snack_DBPowerSpectrum(xfft);
      
      for (i = 0; i < fftlen/2; i++) {
      ffts[i] += xfft[i];
	ffts[i] += xfft[i];
      }
    }
  }

  if (s->storeType != SOUND_IN_MEMORY) {
    CloseLinkedFile(&info);
  }

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    Tcl_AppendResult(interp, "-windowtype must be hanning, hamming, bartlett,"
		     "blackman, or rectangle", NULL);
    return TCL_ERROR;
  }
  
  *wintype = type;

  return TCL_OK;
}

float  
LpcAnalysis (float *data, int N, float *f, int order) {
   int    i,m;
   float  sumU = 0.0;
   float  sumD = 0.0;
   float  b[SNACK_MAX_LPC_ORDER+1];
   float KK;

   float ParcorCoeffs[SNACK_MAX_LPC_ORDER];
   /* PreData should be used when signal is not windowed */
   float PreData[SNACK_MAX_LPC_ORDER];
   float *errF;
   float *errB;
   float errF_m = 0.0;

   if ((order < 1) || (order > SNACK_MAX_LPC_ORDER))  return 0.0f;

   errF = (float *) ckalloc((N+SNACK_MAX_LPC_ORDER) * sizeof(float));
   errB = (float *) ckalloc((N+SNACK_MAX_LPC_ORDER) * sizeof(float));

   for (i=0; i<order; i++) {
     ParcorCoeffs[i] = 0.0;
     PreData[i] = 0.0; /* delete here and use as argument when sig not windowed */
   };

   for (m=0; m<order; m++)
     errF[m] = PreData[m];
   for (m=0; m<N; m++)
     errF[m+order] = data[m] ;

   errB[0] = 0.0;
   for (m=1; m<N+order; m++)
     errB[m] = errF[m-1];

   for (i=0; i<order; i++) {

     sumU=0.0;
     sumD=0.0;
     for (m=i+1; m<N+order; m++) {
       sumU -= errF[m] * errB[m];
       sumD += errF[m] * errF[m] + errB[m] * errB[m];
     };

     if (sumD != 0) KK = 2.0f * sumU / sumD;   
     else KK = 0;
     ParcorCoeffs[i] = KK;


     for (m=N+order-1; m>i; m--) {
       errF[m] += KK * errB[m];
       errB[m] = errB[m-1] + KK * errF[m-1];
     };
   };

   for (i=order; i<N+order; i++) {
     errF_m += errF[i]*errF[i];
   }
   errF_m /= N;

   ckfree((char *)errF);
   ckfree((char *)errB);

   /* convert to direct filter coefficients */
   f[0] = 1.0;    
   for (m=1; m<=order; m++) {
     f[m] = ParcorCoeffs[m-1];
     for (i=1; i<m; i++)
       b[i] = f[i];
     for (i=1; i<m; i++)
       f[i] = b[i] + ParcorCoeffs[m-1] * b[m-i];
   }

   return (float)sqrt(errF_m);
}


void PreEmphase(float *sig, float presample, int len, float preemph) {
  int i;
  float temp;

  if (preemph == 0.0)  return;

  for (i = 0; i < len; i++) {
    temp = sig[i];
    sig[i] = temp - preemph * presample;
    presample = temp;
  }
}

#define SNACK_DEFAULT_POWERWINTYPE SNACK_WIN_HAMMING
#define DB 4.34294481903251830000000 /*  = 10 / ln(10)  */

int
powerCmd(Sound *s, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[])
{
  double dpreemph = 0.0, dscale = 1.0, dframelen = -1.0;
  float preemph = 0.0, scale = 1.0;
  int i, j, n = 0;
  int channel = 0, winlen = 256;
  int arg, startpos = 0, endpos = -1, framelen;
  float *powers = NULL;
  Tcl_Obj *list;
  SnackLinkedFileInfo info;
  SnackWindowType wintype = SNACK_DEFAULT_POWERWINTYPE;
  static char *subOptionStrings[] = {
    "-start", "-end", "-channel", "-framelength", "-windowlength",
    "-windowtype", "-preemphasisfactor", "-scale", "-progress", NULL
  };
  enum subOptions {
    START, END, CHANNEL, FRAMELEN, WINDOWLEN, WINTYPE, PREEMPH, SCALE,
    PROGRESS
  };

  if (s->debug > 0) { Snack_WriteLog("Enter powerCmd\n"); }

  if (s->cmdPtr != NULL) {
    Tcl_DecrRefCount(s->cmdPtr);
    s->cmdPtr = NULL;
  }

  for (arg = 2; arg < objc; arg += 2) {
    int index;
	
    if (Tcl_GetIndexFromObj(interp, objv[arg], subOptionStrings,
			    "option", 0, &index) != TCL_OK) {
      return TCL_ERROR;
    }

    if (arg + 1 == objc) {
      Tcl_AppendResult(interp, "No argument given for ",
		       subOptionStrings[index], " option", (char *) NULL);
      return TCL_ERROR;
    }
    
    switch ((enum subOptions) index) {
    case START:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &startpos) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    case END:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &endpos) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    case CHANNEL:
      {
	char *str = Tcl_GetStringFromObj(objv[arg+1], NULL);
	if (GetChannel(interp, str, s->nchannels, &channel) != TCL_OK) {
	  return TCL_ERROR;
	}
	break;
      }
    case FRAMELEN:
      {
	if (Tcl_GetDoubleFromObj(interp, objv[arg+1], &dframelen) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    case WINDOWLEN:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &winlen) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    case WINTYPE:
      {
	char *str = Tcl_GetStringFromObj(objv[arg+1], NULL);
	if (GetWindowType(interp, str, &wintype) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    case PREEMPH:
      {
	if (Tcl_GetDoubleFromObj(interp, objv[arg+1], &dpreemph) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    case SCALE:
      {
	if (Tcl_GetDoubleFromObj(interp, objv[arg+1], &dscale) != TCL_OK)
	  return TCL_ERROR;
	break;
      }
    case PROGRESS:
      {
	char *str = Tcl_GetStringFromObj(objv[arg+1], NULL);
	
	if (strlen(str) > 0) {
	  Tcl_IncrRefCount(objv[arg+1]);
	  s->cmdPtr = objv[arg+1];
	}
	break;
      }
    }
  } 

  if (winlen < 1) {
    Tcl_AppendResult(interp, "-windowlength must be > 0", NULL);
    return TCL_ERROR;
  }
  if (winlen > NMAX) {
    char str[10];

    sprintf(str, "%d", NMAX);
    Tcl_AppendResult(interp, "-windowlength must be <= ", str, NULL);
    return TCL_ERROR;
  }
  
  preemph = (float) dpreemph;
  scale   = (float) dscale;
  
  if (startpos < 0) startpos = 0;
  if (endpos >= (s->length - 1) || endpos == -1)
    endpos = s->length - 1;
  if (startpos > endpos) return TCL_OK;

  if (s->storeType != SOUND_IN_MEMORY) {
    if (OpenLinkedFile(s, &info) != TCL_OK) {
      return TCL_OK;
    }
  }

  Snack_InitWindow(hamwin, winlen, winlen, wintype);

  if (dframelen == -1.0) {
    dframelen = 0.01;
  }
  framelen = (int) (dframelen * s->samprate);
  n = (endpos - startpos - winlen / 2) / framelen + 1;
  if (n < 1) {
    n = 1;
  }
  if (s->nchannels == 1) {
    channel = 0;
  }

  powers = (float *) ckalloc(sizeof(float) * n);

  Snack_ProgressCallback(s->cmdPtr, interp, "Computing power", 0.0);

  for (j = 0; j < n; j++) {
    float power;
    int winstart = 0;
    if (s->storeType == SOUND_IN_MEMORY) {
      if (s->nchannels == 1 || channel != -1) {
	int p = (startpos + j * framelen - winlen/2) * s->nchannels + channel;

	if (p < 0) p = 0;
	if (p < winlen / 2) winstart = winlen / 2 - p;	
	for (i = winstart; i < winlen; i++) {
	  xfft[i] = (float) ((FSAMPLE(s, p + s->nchannels)
			      - preemph * FSAMPLE(s, p))
			     * hamwin[i]);
	  p += s->nchannels;
	}
      } else {
	int c;
	
	for (i = 0; i < winlen; i++) {
	  xfft[i] = 0.0;
	}
	for (c = 0; c < s->nchannels; c++) {
	  int p = (startpos + j * framelen - winlen/2) * s->nchannels + c;
	  
	  if (p < 0) p = 0;
	  if (p < winlen / 2) winstart = winlen / 2 - p;	
	  for (i = winstart; i < winlen; i++) {
	    xfft[i] += (float) ((FSAMPLE(s, p + s->nchannels)
				 - preemph * FSAMPLE(s, p))
				* hamwin[i]);
	    p += s->nchannels;
	  }
	}
	for (i = 0; i < winlen; i++) {
	  xfft[i] /= s->nchannels;
	}
      }
    } else { /* storeType != SOUND_IN_MEMORY */
      if (s->nchannels == 1 || channel != -1) {
	int p = (startpos + j * framelen - winlen/2) * s->nchannels + channel;
	
	if (p < 0) p = 0;
	if (p < winlen / 2) winstart = winlen / 2 - p;	
	for (i = winstart; i < winlen; i++) {
	  xfft[i] = (float) ((GetSample(&info, p + s->nchannels)
			      - preemph * GetSample(&info, p))
			     * hamwin[i]);
	  p += s->nchannels;
	}
      } else {
	int c;
	
	for (i = 0; i < winlen; i++) {
	  xfft[i] = 0.0;
	}
	for (c = 0; c < s->nchannels; c++) {
	  int p = (startpos + j * framelen - winlen/2) * s->nchannels + c;
	  
	  if (p < 0) p = 0;
	  if (p < winlen / 2) winstart = winlen / 2 - p;	
	  for (i = winstart; i < winlen; i++) {
	    xfft[i] += (float) ((GetSample(&info, p + s->nchannels)
				 - preemph * GetSample(&info, p))
				* hamwin[i]);
	    p += s->nchannels;
	  }
	}
	for (i = 0; i < winlen; i++) {
	  xfft[i] /= s->nchannels;
	}
      }
    }

    power = 0.0f;
    for (i = winstart; i < winlen; i++) {
      power += xfft[i] * xfft[i];
    }
    if (power < 1.0) power = 1.0;
    powers[j] = (float) (DB * log(scale * power / (float)(winlen - winstart)));

    if ((j % 10000) == 9999) {
      int res = Snack_ProgressCallback(s->cmdPtr, interp, "Computing power", 
				       (double) j / n);
      if (res != TCL_OK) {
	ckfree((char *) powers);
	return TCL_ERROR;
      }
    }
  }

  Snack_ProgressCallback(s->cmdPtr, interp, "Computing power", 1.0);

  list = Tcl_NewListObj(0, NULL);
  for (i = 0; i < n; i++) {
    Tcl_ListObjAppendElement(interp,list, Tcl_NewDoubleObj((double)powers[i]));
  }
  Tcl_SetObjResult(interp, list);

  if (s->storeType != SOUND_IN_MEMORY) {
    CloseLinkedFile(&info);
  }
  ckfree((char *) powers);

  if (s->debug > 0) { Snack_WriteLog("Exit powerCmd\n"); }

  return TCL_OK;
}

Changes to snack/generic/jkSynthesis.c.

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/* 
 * Copyright (C) 2001 Jonas Beskow <beskow@speech.kth.se>
 * Copyright (C) 2001-2002 Jonas Beskow <beskow@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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}

static int
generatorFlowProc(Snack_Filter f, Snack_StreamInfo si, float *in, float *out,
		  int *inFrames, int *outFrames) {
  
  generatorFilter_t mf = (generatorFilter_t) f;
  int i,i0,i1,ii;
  int i, i0, i1, ii, fr, wi;
  double y = 1.0/RAND_MAX, z = 1.0/(*outFrames), ph = mf->_phase;
  double frac,a,b,v[2],tmp;
  
  /*  fprintf(stderr,"entering generatorFlowProc, *inFrames = %d\t*outFrames = %d, in = %p, out = %p\n",*inFrames,*outFrames,in,out); */
  
  if (mf->ntot>0 && mf->ngen + (*outFrames) > mf->ntot) {
    *outFrames = mf->ntot - mf->ngen;
  }
  
  /* read input samples (if any) - this is used by the SAMPLED wave type*/
  for (i=0;i<*inFrames;i++) {
    ii = i+mf->nSamples;
    if (ii>=MAX_SAMPLES) break;
    tmp = mf->samples[ii] = in[i];
    if (fabs(tmp) > mf->maxval) { mf->maxval = (float) fabs(tmp);}
  }
  mf->nSamples += i;
  *inFrames = i;
  

  i = 0;
  switch (mf->type) {
  case NOISE:
    
    for (i=0;i<*outFrames;i++) {
      frac = i*z;
      out[i]=(float)(LIN(mf->ampl,frac)*2*(y*rand()-.5));
    for (fr = 0; fr < *outFrames; fr++) {
      frac = fr*z;
      for (wi = 0; wi < si->outWidth; wi++) {
	out[i++]=(float)(LIN(mf->ampl,frac)*2*(y*rand()-.5));
      }
      i += (si->streamWidth - si->outWidth);
    }
    *inFrames = 0;
    break;

  case RECTANGLE:
    for (i=0;i<*outFrames;i++) {
      frac = i*z;
    for (fr = 0; fr < *outFrames; fr++) {
      frac = fr*z;
      ph = fmod (ph + LIN(mf->freq,frac)/si->rate,1.0);
      for (wi = 0; wi < si->outWidth; wi++) {
      out[i] = (float)(LIN(mf->ampl,frac)*(ph<LIN(mf->shape,frac)?-1:1));
	out[i++] = (float)(LIN(mf->ampl,frac)*(ph<LIN(mf->shape,frac)?-1:1));
      }
      i += (si->streamWidth - si->outWidth);
    }
    *inFrames = 0;
    break;

  case TRIANGLE:
    for (i=0;i<*outFrames;i++) {
      frac = i*z;
    for (fr = 0; fr < *outFrames; fr++) {
      frac = fr*z;
      ph = fmod (ph + LIN(mf->freq,frac)/si->rate,1.0);
      for (wi = 0; wi < si->outWidth; wi++) {
      if (ph < LIN(mf->shape,frac)) {
	out[i] = (float)(LIN(mf->ampl,frac)*(-1+2*(ph)/LIN(mf->shape,frac)));
      } else if (ph > LIN(mf->shape,frac)) {
	out[i] = (float)(LIN(mf->ampl,frac)*(1-2*(ph-LIN(mf->shape,frac))/(1-LIN(mf->shape,frac))));
      } else {
	out[i] = (float)LIN(mf->ampl,frac);
      }
	if (ph < LIN(mf->shape,frac)) {
	  out[i++] = (float)(LIN(mf->ampl,frac)*(-1+2*(ph)/LIN(mf->shape,frac)));
	} else if (ph > LIN(mf->shape,frac)) {
	  out[i++] = (float)(LIN(mf->ampl,frac)*(1-2*(ph-LIN(mf->shape,frac))/(1-LIN(mf->shape,frac))));
	} else {
	  out[i++] = (float)LIN(mf->ampl,frac);
	}
      }
      i += (si->streamWidth - si->outWidth);
    }
    *inFrames = 0;
    break;

  case SINE:
    for (i=0;i<*outFrames;i++) {
      frac = i*z;
    for (fr = 0; fr < *outFrames; fr++) {
      frac = fr*z;
      ph = fmod (ph + LIN(mf->freq,frac)/si->rate,1.0);
      a = sin(ph * 2 * M_PI);
      b = 2*LIN(mf->shape,frac)-1;
      a = a>b?a:b;
      for (wi = 0; wi < si->outWidth; wi++) {
      if (1-b==0.0) {
	out[i] = 0.0;
      } else {
	out[i] = (float)(LIN(mf->ampl,frac)*(a-.5-.5*b)/(1-b));
      }
	if (1-b==0.0) {
	  out[i++] = 0.0;
	} else {
	  out[i++] = (float)(LIN(mf->ampl,frac)*(a-.5-.5*b)/(1-b));
	}
      }
      i += (si->streamWidth - si->outWidth);
      *inFrames = 0;
    }
    break;

  case SAMPLED:
    if (mf->nSamples > 0) {
      for (i=0;i<*outFrames;i++) {
	frac = i*z;
      for (fr = 0; fr < *outFrames; fr++) {
	frac = fr*z;
	ph = fmod (ph + LIN(mf->freq,frac)/si->rate,1.0);
	a = ph*(mf->nSamples);
	i0 = (int)floor(a);
	i1 = (int)ceil(a)%mf->nSamples;
	v[0] = mf->samples[i0];
	v[1] = mf->samples[i1];
	frac = (a-i0);
	for (wi = 0; wi < si->outWidth; wi++) {
	out[i] = (float)(LIN(v,frac)*LIN(mf->ampl,frac)/mf->maxval);
      }
	  out[i++] = (float)(LIN(v,frac)*LIN(mf->ampl,frac)/mf->maxval);
	}
	i += (si->streamWidth - si->outWidth);
      }
    } else {
      for (i=0;i<*outFrames;i++) out[i] = 0;
      for (fr = 0; fr < *outFrames; fr++) {
	for (wi = 0; wi < si->outWidth; wi++) {
	  out[i++] = 0;
	}
	i += (si->streamWidth - si->outWidth);
      }
    }
  }
  mf->_phase = ph; /* save current phase value */
  mf->freq[0] = mf->freq[1];
  mf->ampl[0] = mf->ampl[1];
  mf->shape[0] = mf->shape[1];

Changes to snack/generic/shape.c.

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#include <math.h>
#include "snack.h"

extern int littleEndian;
extern int useOldObjAPI;

typedef struct {
   short max;
   short min;
  short max;
  short min;
} Maxmin;

/* --------------------------------------------------------------------- */

static short GetShortSample(Sound *s, long i, int c) {
  short res = 0;
   if (i >= Snack_GetLength(s) || s->storeType == SOUND_IN_CHANNEL)
      return 0;
   i = i * Snack_GetNumChannels(s) + c;
   if (s->storeType == SOUND_IN_MEMORY) {
     return (short) FSAMPLE(s, i);
   } else {
      if (s->linkInfo.linkCh == NULL) {
 	 OpenLinkedFile(s, &s->linkInfo);
      }
 	 return (short) GetSample(&s->linkInfo, i);
   }
   return 0;
  if (i >= Snack_GetLength(s) || s->storeType == SOUND_IN_CHANNEL)
    return 0;
  i = i * Snack_GetNumChannels(s) + c;
  if (s->storeType == SOUND_IN_MEMORY) {
    res = (short) FSAMPLE(s, i);
  } else {
    if (s->linkInfo.linkCh == NULL) {
      OpenLinkedFile(s, &s->linkInfo);
    }
    res = (short) GetSample(&s->linkInfo, i);
  }
  if (Snack_GetSampleEncoding(s) == LIN8) {
    res <<= 8;
  }
  return res;
}

static void SetShortSample(Sound *s, long i, int c, short val) {
  if (i >= Snack_GetLength(s) || s->storeType != SOUND_IN_MEMORY)
    return;
  i = i * Snack_GetNumChannels(s) + c;
  if (Snack_GetSampleEncoding(s) == LIN8) {
    val /= 256;
  }
  FSAMPLE(s, i) = (float) val;
}

/* --------------------------------------------------------------------- */

int shapeCmd(Sound *s, Tcl_Interp *interp, int objc,
	     Tcl_Obj *CONST objv[])
             Tcl_Obj *CONST objv[])
{
  int arg, width = 0, pps = 0, startpos = 0, endpos = -1, check = 0;
  int byteOrder = SNACK_NATIVE;
  int encoding, sampsize;
  Sound *shp = NULL, *preshp = NULL;
  long k0, k1;
  int i, c, first, nc, nbytes = 0, mn, mx;
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    }
  }

  if (shp) {

    /* Store shape into sound */
    static char *subOptionStrings[] = {
      "-start", "-end", "-pixelspersecond", "-format", "-check", NULL
      "-start", "-end", "-pixelspersecond", "-format", "-encoding", "-check",
      NULL
    };
    enum subOptions {
      START, END, PPS, FORMAT, CHECK
      START, END, PPS, FORMAT, ENCODING, CHECK
    };
    int index;
      
    /* default values for the sound target case */
    pps = 100;
    encoding = Snack_GetSampleEncoding(s);
    sampsize = Snack_GetBytesPerSample(s);

    for (arg = 3; arg < objc; arg += 2) {
      if (Tcl_GetIndexFromObj(interp, objv[arg], subOptionStrings,
			      "option", 0, &index) != TCL_OK) {
	return TCL_ERROR;
                              "option", 0, &index) != TCL_OK) {
        return TCL_ERROR;
      }
      switch ((enum subOptions) index) {
      case START:
	{
	  if (Tcl_GetIntFromObj(interp, objv[arg+1], &startpos) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
        {
          if (Tcl_GetIntFromObj(interp, objv[arg+1], &startpos) != TCL_OK)
            return TCL_ERROR;
          break;
        }
      case END:
	{
	  if (Tcl_GetIntFromObj(interp, objv[arg+1], &endpos) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
        {
          if (Tcl_GetIntFromObj(interp, objv[arg+1], &endpos) != TCL_OK)
            return TCL_ERROR;
          break;
        }
      case PPS:
	{
	  if (Tcl_GetIntFromObj(interp, objv[arg+1], &pps) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
        {
          if (Tcl_GetIntFromObj(interp, objv[arg+1], &pps) != TCL_OK)
            return TCL_ERROR;
          break;
        }
      case FORMAT:
      case ENCODING:
	{
	  if (GetEncoding(interp, objv[arg+1], &encoding, &sampsize) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
        {
          if (GetEncoding(interp, objv[arg+1], &encoding, &sampsize) != TCL_OK)
            return TCL_ERROR;
          break;
        }
      case CHECK:
	{
	  if (Tcl_GetBooleanFromObj(interp, objv[arg+1], &check) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
        {
          if (Tcl_GetBooleanFromObj(interp, objv[arg+1], &check) != TCL_OK)
            return TCL_ERROR;
          break;
        }
      }
    }
  } else {

    /* Return shape as binary data */
    static char *subOptionStrings[] = {
      "-start", "-end", "-width", "-pixelspersecond",
      "-shape", "-byteorder", NULL
    };
    enum subOptions {
      START, END, WIDTH, PPS, SHAPE, BYTEORDER
    };
    int index;
    
    for (arg = 2; arg < objc; arg += 2) {

      if (Tcl_GetIndexFromObj(interp, objv[arg], subOptionStrings,
			      "option", 0, &index) != TCL_OK) {
	return TCL_ERROR;
                              "option", 0, &index) != TCL_OK) {
        return TCL_ERROR;
      }
      switch ((enum subOptions) index) {
      case START:
	{
	  if (Tcl_GetIntFromObj(interp, objv[arg+1], &startpos) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
        {
          if (Tcl_GetIntFromObj(interp, objv[arg+1], &startpos) != TCL_OK)
            return TCL_ERROR;
          break;
        }
      case END:
	{
	  if (Tcl_GetIntFromObj(interp, objv[arg+1], &endpos) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
        {
          if (Tcl_GetIntFromObj(interp, objv[arg+1], &endpos) != TCL_OK)
            return TCL_ERROR;
          break;
        }
      case WIDTH:
	{
	  if (Tcl_GetIntFromObj(interp, objv[arg+1], &width) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
        {
          if (Tcl_GetIntFromObj(interp, objv[arg+1], &width) != TCL_OK)
            return TCL_ERROR;
          break;
        }
      case PPS:
	{
	  if (Tcl_GetIntFromObj(interp, objv[arg+1], &pps) != TCL_OK)
	    return TCL_ERROR;
	  break;
	}
        {
          if (Tcl_GetIntFromObj(interp, objv[arg+1], &pps) != TCL_OK)
            return TCL_ERROR;
          break;
        }
      case SHAPE:
	{
	  int nchar = 0;
	  char *str = Tcl_GetStringFromObj(objv[arg+1], &nchar);
	  if (nchar > 0 && (preshp = Snack_GetSound(interp, str)) == NULL) {
	    return TCL_ERROR;
	  }
	  break;
	}
        {
          int nchar = 0;
          char *str = Tcl_GetStringFromObj(objv[arg+1], &nchar);
          if (nchar > 0 && (preshp = Snack_GetSound(interp, str)) == NULL) {
            return TCL_ERROR;
          }
          break;
        }
      case BYTEORDER:
	{
	  int length;
	  char *str = Tcl_GetStringFromObj(objv[arg+1], &length);
	  
	  if (strncasecmp(str, "littleEndian", length) == 0) {
	    byteOrder = SNACK_LITTLEENDIAN;
	  } else if (strncasecmp(str, "bigEndian", length) == 0) {
	    byteOrder = SNACK_BIGENDIAN;
	  } else {
	    Tcl_AppendResult(interp, "-byteorder option should be bigEndian or littleEndian", NULL);
	    return TCL_ERROR;
	  }
	  break;
	}
        {
          int length;
          char *str = Tcl_GetStringFromObj(objv[arg+1], &length);
          
          if (strncasecmp(str, "littleEndian", length) == 0) {
            byteOrder = SNACK_LITTLEENDIAN;
          } else if (strncasecmp(str, "bigEndian", length) == 0) {
            byteOrder = SNACK_BIGENDIAN;
          } else {
            Tcl_AppendResult(interp, "-byteorder option should be bigEndian or littleEndian", NULL);
            return TCL_ERROR;
          }
          break;
        }
      }
    }
  }

  /* Characteristics of 'shaped' sound */
  nc = Snack_GetNumChannels(s);
  Fe = Snack_GetSampleRate(s);

  /* Adjust boundaries to fit the sound and satisfy the constraint: */
  /*    len = (endpos-startpos+1)/Fe = width/pps */
  if (startpos < 0) startpos = 0;
  if (width > 0 && pps > 0) {
    endpos = startpos + (int) (Fe * width / (float) pps - 1);
  }
  if (/* endpos >= (Snack_GetLength(s) - 1) || */ endpos == -1)
    endpos = Snack_GetLength(s) - 1;
  begin = (double) startpos / Fe;
  len = (double) (endpos - startpos + 1) / Fe;
  if (width <= 0 && pps > 0) {
     width = (int) ceil(len * pps);
    width = (int) ceil(len * pps);
  }
  if (width <= 0 || len <= 0) {
     Tcl_SetResult(interp, "Bad boundaries for shape", TCL_STATIC);
     return TCL_ERROR;
    Tcl_SetResult(interp, "Bad boundaries for shape", TCL_STATIC);
    return TCL_ERROR;
  }

  /* Only checks if existing shape seems compatible with sound then exits */
  if (shp && check) {
     float shpLen = (float) Snack_GetLength(shp) / Snack_GetSampleRate(shp);
     if (Snack_GetNumChannels(shp) == 2 * nc
	 && fabs(len - shpLen) < 0.05 * len
	 && Snack_GetSampleRate(shp) < 1000) {
	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(1));
     } else {
	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0));
     }
     return TCL_OK;
    float shpLen = (float) Snack_GetLength(shp) / Snack_GetSampleRate(shp);
    if (Snack_GetNumChannels(shp) == nc
	&& fabs(len - shpLen) < 0.05 * len
	&& Snack_GetSampleRate(shp) < 2000) {
      Tcl_SetObjResult(interp, Tcl_NewBooleanObj(1));
    } else {
      Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0));
    }
    return TCL_OK;
  }

  /* Try to use precomputed shape instead of original sound */
  if (preshp != NULL
      && Snack_GetNumChannels(preshp) == 2 * nc
      && Snack_GetSampleRate(preshp) * len / width > 2.0) {
     Fe = Snack_GetSampleRate(preshp);
      && Snack_GetNumChannels(preshp) == nc
      && Snack_GetSampleRate(preshp) * len / width > 4) {
    Fe = Snack_GetSampleRate(preshp) / 2;
  } else {
     Fe = Snack_GetSampleRate(s);
     preshp = NULL;
    Fe = Snack_GetSampleRate(s);
    preshp = NULL;
  }

  /* number of samples per point */
  if (pps > 0) {
    hRatio = Fe / pps;
  } else {
    hRatio = Fe * len / width;
  }

  /* round first sample to be a multiple of hRatio */
  /* in order to avoid distortions during scrolling */
  pos = floor(begin * Fe / hRatio) * hRatio;

  if (shp) {

    /* update shape parameters and get free space into sound target */
    Tcl_Obj *empty = Tcl_NewStringObj("",-1);
    if (Snack_GetSoundWriteStatus(shp) != IDLE &&
	Snack_GetSoundReadStatus(shp) != IDLE) {
        Snack_GetSoundReadStatus(shp) != IDLE) {
      Snack_StopSound(shp, interp);
    }
    SetFcname(shp, interp, empty);
    Tcl_DecrRefCount(empty);
    shp->storeType = SOUND_IN_MEMORY;
    Snack_SetSampleRate(shp, pps);
    Snack_SetSampleRate(shp, 2 * pps);
    Snack_SetSampleEncoding(shp, encoding);
    Snack_SetBytesPerSample(shp, sampsize);
    Snack_SetNumChannels(shp, 2 * nc);
    Snack_SetLength(shp, (int) ceil((endpos+1-pos)/hRatio));
    Snack_SetNumChannels(shp, nc);
    Snack_SetLength(shp, (int) (2 * ceil((endpos+1-pos)/hRatio)));
    if (Snack_ResizeSoundStorage(shp, Snack_GetLength(shp)) != TCL_OK) {
      return TCL_ERROR;
    }

  } else {

    /* Get memory for binary shape */
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#endif
    }
  }

  /* compute min/max for each point */
  q = (Maxmin *) Tcl_Alloc(sizeof(Maxmin) * nc);
  for (i=0; i<width; i++) {
     k0 = (long) pos; pos += hRatio; k1 = (long) pos;
     first = 1;
     while (k0 < k1 && k0 <= endpos) {
       for (c=0; c<nc; c++) {
	 if (preshp) {
	   mx = GetShortSample(preshp, k0, 2*c);
	   mn = GetShortSample(preshp, k0, 2*c+1);
	 } else {
	   mn = mx = GetShortSample(s, k0, c);
	 }
	 if (first || (mn < q[c].min))
	   q[c].min = mn; 
	 if (first || (mx > q[c].max))
	   q[c].max = mx; 
	 }
       first = 0;
       k0++;
     }
     if (first && k0 > endpos) break;
     if (shp) {
       for (c=0; c<nc; c++) {
	 SetShortSample(shp, i, 2*c,   q[c].max);
	 SetShortSample(shp, i, 2*c+1, q[c].min);
	 /* Snack_SetSample(shp, 2*c,   i, q[c].max);
	    Snack_SetSample(shp, 2*c+1, i, q[c].min); */
       }
     } else {
       for (c=0; c<nc; c++) {
	 p[c+i*nc] = q[c];
       }
     }
    k0 = (long) pos; pos += hRatio; k1 = (long) pos;
    first = 1;
    while (k0 < k1 && k0 <= endpos) {
      for (c=0; c<nc; c++) {
	if (preshp) {
	  mx = GetShortSample(preshp, 2*k0, c);
	  mn = GetShortSample(preshp, 2*k0+1, c);
	} else {
	  mn = mx = GetShortSample(s, k0, c);
	}
	if (first || (mn < q[c].min))
	  q[c].min = mn; 
	if (first || (mx > q[c].max))
	  q[c].max = mx; 
      }
      first = 0;
      k0++;
    }
    if (first && k0 > endpos) break;
    if (shp) {
      for (c=0; c<nc; c++) {
	SetShortSample(shp, 2*i,   c, q[c].max);
	SetShortSample(shp, 2*i+1, c, q[c].min);
	/* Snack_SetSample(shp, 2*c,   i, q[c].max);
	   Snack_SetSample(shp, 2*c+1, i, q[c].min); */
      }
    } else {
      for (c=0; c<nc; c++) {
	p[c+i*nc] = q[c];
      }
    }
  }
  Tcl_Free((char *)q);

  /* return result */
  if (shp) {
    Snack_UpdateExtremes(shp, 0, Snack_GetLength(shp), SNACK_NEW_SOUND);
  } else {

    /* Use correct byte order */
    if (littleEndian) {
      if (byteOrder == SNACK_BIGENDIAN) {
	for (i = 0; i < (int) (nbytes / sizeof(short)); i++)
	  ((short *)p)[i] = Snack_SwapShort(((short *)p)[i]);
        for (i = 0; i < (int) (nbytes / sizeof(short)); i++)
          ((short *)p)[i] = Snack_SwapShort(((short *)p)[i]);
      }
    } else {
      if (byteOrder == SNACK_LITTLEENDIAN) {
	for (i = 0; i < (int) (nbytes / sizeof(short)); i++)
	  ((short *)p)[i] = Snack_SwapShort(((short *)p)[i]);
        for (i = 0; i < (int) (nbytes / sizeof(short)); i++)
          ((short *)p)[i] = Snack_SwapShort(((short *)p)[i]);
      }
    }
    
    Tcl_SetObjResult( interp, resObj);
  }
  return TCL_OK;
}

/* --------------------------------------------------------------------- */

int dataSamplesCmd(Sound *s, Tcl_Interp *interp, int objc,
            Tcl_Obj *CONST objv[])
		   Tcl_Obj *CONST objv[])
{
  int arg, startpos = 0, endpos = -1;
  int byteOrder = SNACK_NATIVE;
  int pos, i, c, nbytes;
  Tcl_Obj *resObj = NULL;
  short *p = NULL;

  /* Get options */
  for (arg = 2; arg < objc; arg += 2) {
    static char *subOptionStrings[] = {
       "-start", "-end", "-byteorder",  NULL
      "-start", "-end", "-byteorder",  NULL
    };
    enum subOptions {
       START, END, BYTEORDER
      START, END, BYTEORDER
    };
    int index;

    if (Tcl_GetIndexFromObj(interp, objv[arg], subOptionStrings,
			    "option", 0, &index) != TCL_OK) {
                            "option", 0, &index) != TCL_OK) {
      return TCL_ERROR;
    }
    switch ((enum subOptions) index) {
    case START:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &startpos) != TCL_OK)
	  return TCL_ERROR;
	break;
        if (Tcl_GetIntFromObj(interp, objv[arg+1], &startpos) != TCL_OK)
          return TCL_ERROR;
        break;
      }
    case END:
      {
	if (Tcl_GetIntFromObj(interp, objv[arg+1], &endpos) != TCL_OK)
	  return TCL_ERROR;
	break;
        if (Tcl_GetIntFromObj(interp, objv[arg+1], &endpos) != TCL_OK)
          return TCL_ERROR;
        break;
      }
    case BYTEORDER:
      {
	int length;
	char *str = Tcl_GetStringFromObj(objv[arg+1], &length);
        int length;
        char *str = Tcl_GetStringFromObj(objv[arg+1], &length);

	if (strncasecmp(str, "littleEndian", length) == 0) {
	   byteOrder = SNACK_LITTLEENDIAN;
	} else if (strncasecmp(str, "bigEndian", length) == 0) {
	   byteOrder = SNACK_BIGENDIAN;
	} else {
	  Tcl_AppendResult(interp, "-byteorder option should be bigEndian or littleEndian", NULL);
	  return TCL_ERROR;
	}
	break;
        if (strncasecmp(str, "littleEndian", length) == 0) {
	  byteOrder = SNACK_LITTLEENDIAN;
        } else if (strncasecmp(str, "bigEndian", length) == 0) {
	  byteOrder = SNACK_BIGENDIAN;
        } else {
          Tcl_AppendResult(interp, "-byteorder option should be bigEndian or littleEndian", NULL);
          return TCL_ERROR;
        }
        break;
      }
    }
  }
   
  /* Adjust boundaries */
  if (startpos < 0) startpos = 0;
  if (/* endpos >= (Snack_GetLength(s) - 1) || */ endpos == -1)
    endpos = Snack_GetLength(s) - 1;
  if (startpos > endpos) return TCL_OK;

  /* Get memory */
  resObj = Tcl_NewObj();
  nbytes = sizeof(short) * Snack_GetNumChannels(s) * (endpos - startpos + 1);
  if (useOldObjAPI) {
    Tcl_SetObjLength(resObj, nbytes);
    p = (short *) resObj->bytes;
  } else {
#ifdef TCL_81_API
     p = (short *) Tcl_SetByteArrayLength(resObj, nbytes);
    p = (short *) Tcl_SetByteArrayLength(resObj, nbytes);
#endif
  }

  /* Put samples into array as binary shorts */
  i = 0;
  for (pos = startpos; pos <= endpos; pos++) {
    for (c = 0; c < Snack_GetNumChannels(s); c++) {
      p[i++] = GetShortSample(s, pos, c);
    }
  }

  /* Use correct byte order */
  if (littleEndian) {
    if (byteOrder == SNACK_BIGENDIAN) {
      for (i = 0; i < (int) (nbytes / sizeof(short)); i++)
	p[i] = Snack_SwapShort(p[i]);
        p[i] = Snack_SwapShort(p[i]);
    }
  } else {
    if (byteOrder == SNACK_LITTLEENDIAN) {
      for (i = 0; i < (int) (nbytes / sizeof(short)); i++)
	p[i] = Snack_SwapShort(p[i]);
        p[i] = Snack_SwapShort(p[i]);
    }
  }

  Tcl_SetObjResult( interp, resObj);
  return TCL_OK;
}

/* --------------------------------------------------------------------- */

Changes to snack/generic/snack.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "snack.h"
#include "tk.h"
#include "jkCanvItems.h"
#include <string.h>

#if defined(__WIN32__)
#  define WIN32_LEAN_AND_MEAN
#  include <windows.h>
#  undef WIN32_LEAN_AND_MEAN

#ifdef __cplusplus
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  }

  soundHashTable = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
  filterHashTable = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));

  Tcl_CreateObjCommand(interp, "sound", Snack_SoundCmd,
		       (ClientData) soundHashTable, (Tcl_CmdDeleteProc *)NULL);

  
  Tcl_CreateObjCommand(interp, "snack::sound", Snack_SoundCmd,
		       (ClientData) soundHashTable, Snack_SoundDeleteCmd);

  
  Tcl_CreateObjCommand(interp, "audio", Snack_AudioCmd,
		       NULL, (Tcl_CmdDeleteProc *)NULL);

  
  Tcl_CreateObjCommand(interp, "snack::audio", Snack_AudioCmd,
		       NULL, Snack_AudioDeleteCmd);

  
  Tcl_CreateObjCommand(interp, "snack::mixer", Snack_MixerCmd,
		       NULL, Snack_MixerDeleteCmd);

  
  Tcl_CreateObjCommand(interp, "snack::filter", Snack_FilterCmd,
		       (ClientData) filterHashTable, Snack_FilterDeleteCmd);

  Tcl_CreateObjCommand(interp, "snack::debug", 
  
  Tcl_CreateObjCommand(interp, "snack::debug",
		       (Tcl_ObjCmdProc*) Snack_DebugCmd,
		       NULL, (Tcl_CmdDeleteProc *)NULL);

  snackDebugChannel = Tcl_GetStdChannel(TCL_STDERR);
  debugInterp = interp;
  
  Tcl_SetVar(interp, "snack::patchLevel", SNACK_PATCH_LEVEL, TCL_GLOBAL_ONLY);
  Tcl_SetVar(interp, "snack::version",    SNACK_VERSION,     TCL_GLOBAL_ONLY);

  Tcl_InitHashTable(soundHashTable, TCL_STRING_KEYS);
  Tcl_InitHashTable(filterHashTable, TCL_STRING_KEYS);

  if (initialized == 0) {
    SnackDefineFileFormats(interp);
    SnackCreateFilterTypes(interp);

    
    SnackAudioInit();
      
    
    Tcl_CreateExitHandler(Snack_ExitProc, (ClientData) NULL);

    
    initialized = 1;
  }
#ifdef SNACK_CSLU_TOOLKIT
  Snack_AddSubCmd(SNACK_SOUND_CMD, "fromCSLUshWave",
		  (Snack_CmdProc *) fromCSLUshWaveCmd, NULL);
  Snack_AddSubCmd(SNACK_SOUND_CMD, "toCSLUshWave",
		  (Snack_CmdProc *) toCSLUshWaveCmd, NULL);

Changes to snack/generic/snack.h.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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# undef TCL_STORAGE_CLASS
# define TCL_STORAGE_CLASS DLLEXPORT
#endif

#include "jkSound.h"
#include "jkAudIO.h"

#define SNACK_VERSION     "2.0"
#define SNACK_PATCH_LEVEL "2.0.7"
#define SNACK_VERSION     "2.1"
#define SNACK_PATCH_LEVEL "2.1.6"

Changes to snack/generic/snackDecls.h.

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				Sound * s, Tcl_Interp * interp, 
				Tcl_Channel * ch));
/* 22 */
EXTERN void		Snack_WriteLog _ANSI_ARGS_((char * s));
/* 23 */
EXTERN void		Snack_WriteLogInt _ANSI_ARGS_((char * s, int n));
/* 24 */
EXTERN SnackFileFormat * Snack_GetFileFormats _ANSI_ARGS_((void));
EXTERN Snack_FileFormat * Snack_GetFileFormats _ANSI_ARGS_((void));
/* 25 */
EXTERN void		Snack_InitWindow _ANSI_ARGS_((float * hamwin, 
				int winlen, int fftlen, int type));
/* 26 */
EXTERN int		Snack_InitFFT _ANSI_ARGS_((int n));
/* 27 */
EXTERN int		Snack_DBPowerSpectrum _ANSI_ARGS_((float * x));
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    short (*snack_Mulaw2Lin) _ANSI_ARGS_((unsigned char u_val)); /* 17 */
    short (*snack_SwapShort) _ANSI_ARGS_((short s)); /* 18 */
    int (*snackSeekFile) _ANSI_ARGS_((seekProc * SeekProc, Sound * s, Tcl_Interp * interp, Tcl_Channel ch, int pos)); /* 19 */
    int (*snackOpenFile) _ANSI_ARGS_((openProc * OpenProc, Sound * s, Tcl_Interp * interp, Tcl_Channel * ch, char * mode)); /* 20 */
    int (*snackCloseFile) _ANSI_ARGS_((closeProc * CloseProc, Sound * s, Tcl_Interp * interp, Tcl_Channel * ch)); /* 21 */
    void (*snack_WriteLog) _ANSI_ARGS_((char * s)); /* 22 */
    void (*snack_WriteLogInt) _ANSI_ARGS_((char * s, int n)); /* 23 */
    SnackFileFormat * (*snack_GetFileFormats) _ANSI_ARGS_((void)); /* 24 */
    Snack_FileFormat * (*snack_GetFileFormats) _ANSI_ARGS_((void)); /* 24 */
    void (*snack_InitWindow) _ANSI_ARGS_((float * hamwin, int winlen, int fftlen, int type)); /* 25 */
    int (*snack_InitFFT) _ANSI_ARGS_((int n)); /* 26 */
    int (*snack_DBPowerSpectrum) _ANSI_ARGS_((float * x)); /* 27 */
    void (*snack_StopSound) _ANSI_ARGS_((Sound * s, Tcl_Interp * interp)); /* 28 */
    int (*snack_ProgressCallback) _ANSI_ARGS_((Tcl_Obj * cmd, Tcl_Interp * interp, char * type, double fraction)); /* 29 */
    void (*snack_CreateFileFormat) _ANSI_ARGS_((Snack_FileFormat * typePtr)); /* 30 */
    long (*snack_SwapLong) _ANSI_ARGS_((long s)); /* 31 */

Changes to snack/generic/sound.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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BOOL APIENTRY
DllMain(HINSTANCE hInst, DWORD reason, LPVOID reserved)
{
  snackHInst = hInst;
  return TRUE;
}
#endif

#ifdef MAC
#include <string.h>
int main (void)
{
	return 0;
}
#endif

Tcl_Channel snackDebugChannel = NULL;
static Tcl_Interp *debugInterp = NULL;
int debugLevel = 0;
char *snackDumpFile = NULL;

int
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      Tcl_AppendResult(interp, "can not open dump file in a safe interpreter",
		       (char *) NULL);
      return TCL_ERROR;
    }
    str = Tcl_GetStringFromObj(objv[3], &len);
    snackDumpFile = (char *) ckalloc(len + 1);
    strcpy(snackDumpFile, str);
   }
  }
  if (debugLevel > 0) {
    str = Tcl_GetVar(interp, "sound::patchLevel", TCL_GLOBAL_ONLY);
    Tcl_Write(snackDebugChannel, "Sound patch level: ", 19);
    Tcl_Write(snackDebugChannel, str, strlen(str));
    Tcl_Write(snackDebugChannel, "\n", 1);
    Tcl_Flush(snackDebugChannel);
  }
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			   Tcl_Obj *CONST objv[]);
#endif

int useOldObjAPI = 0;
static int initialized = 0;
int littleEndian = 0;

#ifdef __cplusplus
extern "C" SnackStubs *snackStubs;
#else
extern SnackStubs *snackStubs;
#endif

extern Tcl_HashTable *filterHashTable;

#if defined(Tcl_InitHashTable) && defined(USE_TCL_STUBS)
#undef Tcl_InitHashTable
#define Tcl_InitHashTable (tclStubsPtr->tcl_InitHashTable)
#endif

int
Sound_Init(Tcl_Interp *interp)
{
  char *version;
  Tcl_HashTable *soundHashTable;
  union {
    char c[sizeof(short)];
    short s;
  } order;

  
#ifdef USE_TCL_STUBS
  if (Tcl_InitStubs(interp, "8", 0) == NULL) {
    return TCL_ERROR;
  }
#endif

  version = Tcl_GetVar(interp, "tcl_version",
		       (TCL_GLOBAL_ONLY | TCL_LEAVE_ERR_MSG));

  
  if (strcmp(version, "8.0") == 0) {
    useOldObjAPI = 1;
  }

#ifdef TCL_81_API
  if (Tcl_PkgProvideEx(interp, "sound", SNACK_VERSION,
		       (ClientData) &snackStubs) != TCL_OK) {
    return TCL_ERROR;
  }
#else
  if (Tcl_PkgProvide(interp, "sound", SNACK_VERSION) != TCL_OK) {
    return TCL_ERROR;
  }
#endif

  soundHashTable = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
  filterHashTable = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));

  Tcl_CreateObjCommand(interp, "sound", Snack_SoundCmd,
		       (ClientData) soundHashTable, (Tcl_CmdDeleteProc *)NULL);

  
  Tcl_CreateObjCommand(interp, "snack::sound", Snack_SoundCmd,
		       (ClientData) soundHashTable, (Tcl_CmdDeleteProc *)NULL);
  
  Tcl_CreateObjCommand(interp, "sound::sound", Snack_SoundCmd,
		       (ClientData) soundHashTable, Snack_SoundDeleteCmd);
  
  Tcl_CreateObjCommand(interp, "audio", Snack_AudioCmd,
		       NULL, (Tcl_CmdDeleteProc *)NULL);

  
  Tcl_CreateObjCommand(interp, "snack::audio", Snack_AudioCmd,
		       NULL, (Tcl_CmdDeleteProc *)NULL);
  
  Tcl_CreateObjCommand(interp, "sound::audio", Snack_AudioCmd,
		       NULL, Snack_AudioDeleteCmd);
  
  Tcl_CreateObjCommand(interp, "sound::mixer", Snack_MixerCmd,
		       NULL, Snack_MixerDeleteCmd);

  
  Tcl_CreateObjCommand(interp, "snack::mixer", Snack_MixerCmd,
		       NULL, Snack_MixerDeleteCmd);

  
  Tcl_CreateObjCommand(interp, "snack::filter", Snack_FilterCmd,
		       (ClientData) filterHashTable, Snack_FilterDeleteCmd);

  
  Tcl_CreateObjCommand(interp, "snack::debug",
		       (Tcl_ObjCmdProc*) Snack_DebugCmd,
		       NULL, (Tcl_CmdDeleteProc *)NULL);

  snackDebugChannel = Tcl_GetStdChannel(TCL_STDERR);
  debugInterp = interp;

  
  Tcl_SetVar(interp, "snack::patchLevel", SNACK_PATCH_LEVEL, TCL_GLOBAL_ONLY);
  Tcl_SetVar(interp, "snack::version",    SNACK_VERSION,     TCL_GLOBAL_ONLY);
  Tcl_SetVar(interp, "sound::patchLevel", SNACK_PATCH_LEVEL, TCL_GLOBAL_ONLY);
  Tcl_SetVar(interp, "sound::version",    SNACK_VERSION,     TCL_GLOBAL_ONLY);

  Tcl_InitHashTable(soundHashTable, TCL_STRING_KEYS);
  Tcl_InitHashTable(filterHashTable, TCL_STRING_KEYS);

  if (initialized == 0) {
    SnackDefineFileFormats(interp);
    SnackCreateFilterTypes(interp);

    
    SnackAudioInit();
    
    Tcl_CreateExitHandler(Snack_ExitProc, (ClientData) NULL);
    
    initialized = 1;
  }
#ifdef SNACK_CSLU_TOOLKIT

Changes to snack/mac/README.

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In order to use Snack you will have to install Tcl/Tk 8.3 first.
In order to use Snack you will have to install Tcl/Tk 8.3.3 first.


Building Snack using Metrowerks CodeWarrior
-------------------------------------------------------------------
Use the CodeWarrior project file: snack.mcp.sit.hqx

You will have to specify the location of the Tcl/Tk include files
which are part of the Tcl/Tk source distribution.
This is the default compiler for the Snack Macintosh binaries.


Building Snack using MPW
-------------------------------------------------------------------
Snack can be compiled using Apple's free MPW compiler which can be
downloaded from http://developer.apple.com/tools/mpw-tools/

You will have to edit the makefile in order to specify the location of the
Tcl/Tk include files which are part of the Tcl/Tk source distribution.


Building Snack using Metrowerks CodeWarrior
-------------------------------------------------------------------
Building Snack using CodeWarrior is not as tested as with MPW.
Use the CodeWarrior project file: snack.mcp.sit.hqx

You will have to specify the location of the Tcl/Tk include files
which are part of the Tcl/Tk source distribution.


Installation
-------------------------------------------------------------------
You must put the file snack.shlb in the standard library location, 
i.e. the "Tool Command Language" folder within the Extensions folder. 

You have to give Tcl scripts ample memory. This is done by marking the
wish icon and selecting Edit | Show info | Memory. 

You also have to use the 'millions of colors' display setting in order
to get spectrograms to display correctly. Failure to do this will cause
the computer to lock up when running scripts that display spectrograms.

Changes to snack/mac/jkAudIO_mac.c.

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/*
 * Copyright (C) 1998-2001
 * Copyright (C) 1998-2002
 * Dan Ellis
 * Leonid Spektor
 * Frederic Bonnet
 * Kåre Sjölander
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
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}

int
SnackAudioMaxNumberChannels(char *device)
{
  return(2);
}

int
SnackAudioMinNumberChannels(char *device)
{
  return(1);
}

void
SnackMixerGetInputJackLabels(char *buf, int n)
{
  OSErr oe;
  char *devname = NULL;	/* how to ask for default input device */
  long inRefNum;

Changes to snack/mac/snack.make.

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				  "{SrcDir}jkSoundFile.c" 
				  "{SrcDir}jkSoundProc.c" 
				  "{SrcDir}snack.c" 
				  "{SrcDir}jkFormatMP3.c" 
				  "{SrcDir}jkMixer.c" 
				  "{SrcDir}jkAudio.c" 
				  "{SrcDir}jkFilter.c" 
				  "{SrcDir}jkFilterIIR.c" 
				  "{SrcDir}jkSynthesis.c" 
				  "{SrcDir}shape.c" 
				  "{SrcDir}snackStubInit.c"
				  
#

### Object Files ###
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				  "{ObjDir}jkSoundFile.c.x" 
				  "{ObjDir}jkSoundProc.c.x" 
				  "{ObjDir}snack.c.x" 
				  "{ObjDir}jkFormatMP3.c.x" 
				  "{ObjDir}jkMixer.c.x" 
				  "{ObjDir}jkAudio.c.x" 
				  "{ObjDir}jkFilter.c.x" 
				  "{ObjDir}jkFilterIIR.c.x" 
				  "{ObjDir}jkSynthesis.c.x" 
				  "{ObjDir}shape.c.x" 
				  "{ObjDir}snackStubInit.c.x"

### Libraries ###

LibFiles-PPC    =  
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"{ObjDir}jkSoundEdit.c.x"  Ÿ  "{SrcDir}jkSoundEdit.c"
"{ObjDir}jkSoundFile.c.x"  Ÿ  "{SrcDir}jkSoundFile.c"
"{ObjDir}jkSoundProc.c.x"  Ÿ  "{SrcDir}jkSoundProc.c"
"{ObjDir}snack.c.x"  Ÿ  "{SrcDir}snack.c"
"{ObjDir}jkFormatMP3.c.x"  Ÿ  "{SrcDir}jkFormatMP3.c"
"{ObjDir}jkAudio.c.x"  Ÿ  "{SrcDir}jkAudio.c"
"{ObjDir}jkFilter.c.x"  Ÿ  "{SrcDir}jkFilter.c"
"{ObjDir}jkFilterIIR.c.x"  Ÿ  "{SrcDir}jkFilterIIR.c"
"{ObjDir}jkSynthesis.c.x"  Ÿ  "{SrcDir}jkSynthesis.c"
"{ObjDir}jkMixer.c.x"  Ÿ  "{SrcDir}jkMixer.c"
"{ObjDir}shape.c.x"  Ÿ  "{SrcDir}shape.c"
"{ObjDir}snackStubInit.c.x"  Ÿ  "{SrcDir}snackStubInit.c"


### Optional Dependencies ###

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[9m#rkJlq"FH%UA"BiMEVi(I`DHhCc4X@3X"1jA22r"%qX*%iX0cP0k(G`NVGXIP
#F%Kj8R"'[1UE&PrK5bj2#Yd[M+%@kQ!VB,H1i'q*[c*68X,1ph4i8[!2hd)%q#D
RMrVZmTMJMrqe!%MVJ(pVAjr@6(rEaX&[YDpe9Ab2fMKQ92Zk@Rb1@C154i$(bPG
#@p9lGfd5ja(Z$*5[K)CH6m6MTSk$aAYG[K,-q"$F"(krEBH[""m62hM5e!'X+&m
*2[Yc11Q9a)hq"[0UjQEPm[0D'2)TLpq61h`Z-,iGhhG0[M&J8[9j%hI4Ma(KEUM
T9*6h-4-h3TcfHbCZIfC8m5D`p5H)q,lPIea+p69eAkIYb1'HNLm+rh2l)A9X6J6
h$-c0V*9qV&cqXPC%I0ENDf3Z2Al6S(Z&(jLi3m%Nj3H")A&8CPELCX-4P6m&I'e
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!#!!!05h!!d!3J"K!'-!D`"R!'3!43"b!()!,J"S!(3
!E3!#!!)!!!!!!!$8[l@f#&feYJKG!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!&4&@&406e06!3!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
,%`!!!!!!!!!"!!h[XJ!!!!%!!!!!!!!!!!!3!&N"3`&'!c3!!!!!!!!$!!!!!3!
Hl0l*1&Tkhq[VKl9Kl`rY2(&Ri2,J3%fB#0H6I-ZB$qA"JEFr6X526Gcai*h(Udi
AaqD1KIPQcXemV&`qUjN%cbAZ$2LE1amVPcqTq`pk#%5!8bk2$,M#V4FXRM&[QZp
(iTSrXlb@lBCeRPD,`rcFpJq-86lhV,Mb,bb2)Cq,"i'RG&Ia5a1hRfE&jD1"TMJ
Fpc"bkM5M,Km0"1+LF)V!r`-!!,e+!!!"!!!!!43!!!!8!!!!-RMIJ(I&UbJ6i-*
C@r#ZH"9Pm"*MLfeiel`+U`frap(XN9Y4)RkeL("Zq-r,-E(Z51&K,B"hHdp&rm[
8RUkm"4L-hZh&p"D""aYi9Xcd2SZl#harh2&6[9YkZld0m!5p%ErK!eVd+kMIIk-
$RK'bqp)G8p)30TjZfC+'GmBVVj0++aCq&m3lLkUCleG3([cq`#hNh31k$,J[DXQ
VVYa&fPHXh%AX"rBIFr00pk`Uf,0a+NFfrBl[(h@AU$bCl'rAh#8U*JdaXEX%-G#
R#d'I,RMF4mcMkFC@mUNdK(3%$KV'12+4J*XKTLN!MFNRS9f-p`!!!"!!+`!&!4J
"pJ!!!!!!!!-!!!!"!!!!!43!!!!8!!!!-J6Em&JJ8J!!!"`!-J!!8f9dC`!!!!S
!!!%8!!!!&!!!!$)$f5dS)d)!!!!F!$)!!&0PG'F!!!!+!!$rr`!!!!!$f@rd[2B
:
!!2rr!!!!!!6F-G5f!!:

Changes to snack/mac/snack.r.

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/*
 * The following include and defines help construct
 * the version string for Snack.
 */

#define SCRIPT_MAJOR_VERSION  2		/* Major number */
#define SCRIPT_MINOR_VERSION  0		/* Minor number */
#define SCRIPT_MINOR_VERSION  1		/* Minor number */
#define SCRIPT_RELEASE_SERIAL 0 	/* Really minor number! */
#define RELEASE_LEVEL         final	/* alpha, beta, or final */
#define SCRIPT_VERSION        "2.0"
#define SCRIPT_PATCH_LEVEL    "2.0.7"
#define SCRIPT_VERSION        "2.1"
#define SCRIPT_PATCH_LEVEL    "2.1.6"
#define FINAL                 1		/* Change to 1 if final version. */

#if FINAL
#   define MINOR_VERSION (SCRIPT_MINOR_VERSION * 16) + SCRIPT_RELEASE_SERIAL
#else
#   define MINOR_VERSION SCRIPT_MINOR_VERSION * 16
#endif

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# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#

load [file join $dir snack.shlb]

package provide snack 2.0
package provide snack 2.1

# Set playback latency according to the environment variable PLAYLATENCY

if {$::tcl_platform(platform) == "unix"} {
    if {[info exists env(PLAYLATENCY)] && $env(PLAYLATENCY) > 0} {
	snack::audio playLatency $env(PLAYLATENCY)
    }
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			-variable [namespace current]::v(in$jack)] \
			-anchor w
	    }
	}
	if {[snack::mixer outputs] != ""} {
	    pack [label $wi.f.f2.lo -text "Output jacks:"]
	    foreach jack [snack::mixer outputs] {
		snack::mixer lines $jack [namespace current]::v(out$jack)
		snack::mixer output $jack [namespace current]::v(out$jack)
		pack [checkbutton $wi.f.f2.b$jack -text $jack \
			-variable [namespace current]::v(out$jack)] \
			-anchor w
	    }
	}
	pack [button $wi.b1 -text Close -command "destroy $wi"]
    }
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	if {$data(-format) == ""} {
	    set data(-format) RAW
	}
	set data(-format) [string toupper $data(-format)]
	if {$data(-initialdir) == ""} {
	    set data(-initialdir) "."
	}
	if {[string match macintosh $::tcl_platform(platform)]} {
	  set tmp [tk_getSaveFile -title $data(-title) \
	      -initialdir $data(-initialdir) -initialfile $data(-initialfile)]
	  if {[string compare [file ext $tmp] ""] == 0} {
	    append tmp [fmt2ext $data(-format)]
	  }
	  return $tmp
	} else {
	return [tk_getSaveFile -title $data(-title) -filetypes [saveTypes $data(-format)] -defaultextension [fmt2ext $data(-format)] -initialdir $data(-initialdir) -initialfile $data(-initialfile)]
	  return [tk_getSaveFile -title $data(-title) \
	      -filetypes [saveTypes $data(-format)] \
	      -defaultextension [fmt2ext $data(-format)] \
	      -initialdir $data(-initialdir) -initialfile $data(-initialfile)]
	}
    }

    set saveTypes ""

    proc addSaveTypes {typelist fmtlist} {
	variable saveTypes
	variable filebox
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	if {[string match horiz* $lm(orient)]} {
	    set lm(height) $a(-width)
	    set lm(width)  $a(-length)
	} else {
	    set lm(height) $a(-length)
	    set lm(width)  $a(-width)
	}
	set lm(maxtime) [clock seconds]
	set lm(maxlevel) 0.0

	proc drawLevelMeter {w} {
            upvar [namespace current]::${w}::levelmeter lm

	    set c ${w}_levelMeter
	    $c configure -width $lm(width) -height $lm(height)
	    $c delete all

	    $c create rectangle 0 0 $lm(width) $lm(height) \
		    -fill $lm(oncolor) -outline ""
	    $c create rectangle 0 0 0 0 -outline "" -fill $lm(offcolor) \
		    -tag mask
		    -tag mask1
	    $c create rectangle 0 0 0 0 -outline "" -fill $lm(offcolor) \
		    -tag mask2
	    $c create rectangle 0 0 [expr $lm(width)-1] [expr $lm(height)-1] \
		    -outline $lm(bg)
	    if {[string match horiz* $lm(orient)]} {
		$c coords mask [expr {$lm(level)*$lm(width)}] 0 \
		$c coords mask1 [expr {$lm(level)*$lm(width)}] 0 \
			$lm(width) $lm(height)
		$c coords mask2 [expr {$lm(level)*$lm(width)}] 0 \
			$lm(width) $lm(height)
		for {set x 5} {$x < $lm(width)} {incr x 5} {
		    $c create line $x 0 $x [expr $lm(width)-1] -fill black \
			    -width 2
		}
	    } else {
		$c coords mask 0 0 $lm(width) \
		$c coords mask1 0 0 $lm(width) \
			[expr {$lm(height)-$lm(level)*$lm(height)}]
		$c coords mask2 0 0 $lm(width) \
			[expr {$lm(height)-$lm(level)*$lm(height)}]
		for {set y 5} {$y < $lm(height)} {incr y 5} {
		    $c create line 0 [expr $lm(height)-$y] \
			    [expr $lm(width)-1] [expr $lm(height)-$y] \
			    -fill black -width 2
		}
	    }
	}

	proc levelMeterHandler {w cmd args} {
          upvar [namespace current]::${w}::levelmeter lm

          if {[string match conf* $cmd]} {
              switch -- [lindex $args 0] {
    	      -level {
		  set arg [lindex $args 1]
		  set arg [expr {$arg/32768.0}]
		  if {$arg < 0.00001} { set arg 0.00001 }
		  set lm(level) [expr {log($arg)/4.516+1.0}]
   		  if {$arg < 1} { set arg 1 }
		  set lm(level) [expr {log($arg)/10.3972}]
		  if {[clock seconds] - $lm(maxtime) > 2} {
		    set lm(maxtime) [clock seconds]
		    set lm(maxlevel) 0.0
		  }
		  if {$lm(level) > $lm(maxlevel)} {
		    set lm(maxlevel) $lm(level)
		  }

		  if {[string match horiz* $lm(orient)]} {
		    set l1 [expr {5*int($lm(level)*$lm(width)/5)}]
		    set l2 [expr {5*int($lm(maxlevel)*$lm(width)/5)}]
		      ${w}_levelMeter coords mask \
		    ${w}_levelMeter coords mask1 $l2 0 \
			      [expr {$lm(level)*$lm(width)}] 0 \
			      $lm(width) $lm(height)
			$lm(width) $lm(height)
		    ${w}_levelMeter coords mask2 [expr {$l2-5}] 0 \
			$l1 $lm(height)
		  } else {
		    set l1 [expr {5*int($lm(level)*$lm(height)/5)}]
		    set l2 [expr {5*int($lm(maxlevel)*$lm(height)/5)}]
		      ${w}_levelMeter coords mask 0 0 $lm(width) \
			      [expr {$lm(height)-$lm(level)*$lm(height)}]
		    ${w}_levelMeter coords mask1 0 0 $lm(width) \
			[expr {$lm(height)-$l2}]
		    ${w}_levelMeter coords mask2 0 [expr {$lm(height)-$l2+5}] \
			$lm(width) [expr {$lm(height)-$l1}]
		  }	 
	      }
	      -length {
		  if {[string match horiz* $lm(orient)]} {
		      set lm(width) [lindex $args 1]
		  } else {
		      set lm(height) [lindex $args 1]

snack/python/README became executable.

snack/python/tkSnack.py became executable.

Changes to snack/tests/audio.test.

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# Commands covered: snack::audio
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test audio-1.1 {snack::audio command with unknow sub-command} {

Changes to snack/tests/cget.test.

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# Commands covered: sound cget
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test cget-1.1 {cget command, bad args} {

Changes to snack/tests/concat.test.

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# Commands covered: sound concatenate
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test concatenate-1.1 {concatenate command} {

Changes to snack/tests/conf.test.

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# Commands covered: sound configure
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test configure-1.1 {configure command, bad args} {

Changes to snack/tests/convert.test.

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# Commands covered: sound convert
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test convert-1.1 {convert command, mono->stereo} {

Changes to snack/tests/copy.test.

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# Commands covered: sound copy
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test copy-1.1 {copy command} {

Changes to snack/tests/crop.test.

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# Commands covered: sound crop
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test crop-1.1 {crop command} {

Changes to snack/tests/cut.test.

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# Commands covered: sound cut
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test cut-1.1 {cut command} {

Changes to snack/tests/data.test.

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# Commands covered: sound data/append
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test data-1.1 {data command, read sound from binary variable} {

Changes to snack/tests/dbpower.test.

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# Commands covered: sound dBPowerSpectrum
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test dbpower-1.1 {dBPowerSpectrum command} {

Changes to snack/tests/fileio.test.

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# Commands covered: sound read/write
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test fileio-1.1 {write/read commands for WAV file format} {

Changes to snack/tests/filter.test.

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# Commands covered: snack::filter
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test filter-1.1 {filter command create/destroy} {
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test filter-2.14 {sound filter command, stereo, map filter reconfigured} {
  set s [snack::sound snd -channels 2]
  $s length 1000000
  $s sample 500001 3000 4000
  $s sample 500002 -3000 -4000
  set f [snack::filter map 0.25]
  $s filter $f
  set res [$s max],[$s min]
  $f configure 2.0
  $s filter $f
  set res [$s max],[$s min]
  append res ,[$s max],[$s min]
  $s sample 500001 0 0
  $s sample 500002 0 0
  $s changed New
  append res ,[$s max],[$s min]
  $f destroy
  $s destroy
  set res
} {2000,-2000,0,0}
} {1000,-1000,2000,-2000,0,0}

test filter-2.15 {sound filter command, long sound, check samples} {
  set s [snack::sound snd]
  $s length 200000
  $s sample 100001 3000
  $s sample 100002 -3000
  set f [snack::filter map 0.25]
  $s filter $f -start 100000
  set res [$s max],[$s min]
  $s sample 100001 0
  $s sample 100002 0
  $s changed New
  append res ,[$s max],[$s min]
  $f destroy
  $s destroy
  set res
} {750,-750,0,0}

test filter-3.1 {sound filter command, with -progress option} {
  set res ""
  proc prog {msg frac} {
    lappend ::res $frac
  }
  set s [snack::sound snd]
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  set f2 [snack::filter map 0.5]
  set cf [snack::filter compose $f1 $f2]
  set res $cf
  $f1 destroy
  $f2 destroy
  $cf destroy
  set res
} compose20
} compose21

test filter-4.2 {filter compose, apply three-filter composition} {
  set s [snack::sound snd]
  $s length 10
  $s sample 5 1000
  set f1 [snack::filter map 0.6]
  set f2 [snack::filter map 0.5]
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  $s destroy
  set res
} {120}

test filter-4.3 {filter compose, no filter specified} {
  catch {snack::filter compose} msg
  set msg
} {wrong # args: should be " compose filter1 filter2 ..."}
} {wrong # args: should be "compose filter1 filter2 ..."}

test filter-4.4 {filter compose, only one filter specified} {
  catch {snack::filter compose junk} msg
  set msg
} {wrong # args: should be " compose filter1 filter2 ..."}
} {wrong # args: should be "compose filter1 filter2 ..."}

test filter-5.1 {echo filter, missing parameter} {
  catch {snack::filter echo} msg
  set msg
} {wrong # args: should be " echo inGain outGain delay1 decay1 ..."}
} {wrong # args: should be "echo inGain outGain delay1 decay1 ..."}

test filter-5.2 {echo filter, negative delay parameter} {
  catch {snack::filter echo 0.0 0.0 -100 0} msg
  set msg
} {Delay must be positive}

test filter-5.3 {echo filter, negative decay parameter} {
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  $f3 destroy
  $f4 destroy
  $g1 destroy
  $c1 destroy
  $s destroy
  set res
} {16000 16000 10026 -6287 Lin16 1 RAW 0}

test filter-7.1 {iir filter, applied to sound} {
  set s [snack::sound snd -load ex1.wav]
  set f [snack::filter iir -numerator "0.99 -0.99" -denominator "1 -0.99"]
  $s filter $f -continuedrain 0
  set res [$s info]
  $f destroy
  $s destroy
  set res
} {15820 16000 13222 -9615 Lin16 1 WAV 44}

test filter-7.2 {iir filter, applied to stereo sound} {
  set s [snack::sound snd -load ex1.wav]
  $s convert -channels 2
  set f [snack::filter iir -numerator "0.99 -0.99" -denominator "1 -0.99"]
  $s filter $f -continuedrain 0
  set res [$s info]
  $f destroy
  $s destroy
  set res
} {15820 16000 13222 -9616 Lin16 2 WAV 44}

# cleanup
::tcltest::cleanupTests
return

Changes to snack/tests/inflush.test.

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-
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# Commands covered: sound flush info
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test inflush-1.1 {flush/info commands} {

Changes to snack/tests/insert.test.

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# Commands covered: sound insert
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test insert-1.1 {insert command} {

Changes to snack/tests/length.test.

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# Commands covered: sound length
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test length-1.1 {length command, get length in samples} {

Changes to snack/tests/maxmin.test.

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# Commands covered: sound max/min
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test maxmin-1.1 {max/min commands} {

Changes to snack/tests/mixer.test.

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-
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# Commands covered: snack::mixer
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test mixer-1.1 {snack::mixer command} {

Changes to snack/tests/pitch.test.

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-
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# Commands covered: sound pitch
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test pitch-1.1 {pitch command} {

Changes to snack/tests/play.test.

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-
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# Commands covered: sound play
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test play-1.1.1 {play command, non-blocking, -load} {
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  set servsock [socket -server servproc 24683]

  set sock [socket localhost 24683]
  fconfigure $sock -translation binary -blocking 1
  if {$::tcl_version > 8.0} {
    fconfigure $sock -encoding binary
  }
  puts -nonewline $sock $data
  close $sock
 
  vwait flag
  set flag
} RAW

test play-1.1.8 {play command, -channel, data length 0} {
  proc endproc {snd sock} {
    set info [$snd info]
    close $sock
    $snd destroy
    set ::flag [lindex $info 6]
  }
  proc servproc { sock addr port } {
    set s [snack::sound snd -channel $sock -byteorder bigEndian]
    $s play -command [list endproc $s $sock]
  }

  set s [snack::sound snd]
  set data [$s data -fileformat raw -byteorder bigendian]
  $s destroy

  set servsock [socket -server servproc 24684]

  set sock [socket localhost 24684]
  fconfigure $sock -translation binary -blocking 1
  if {$::tcl_version > 8.0} {
    fconfigure $sock -encoding binary
  }
  puts -nonewline $sock $data
  close $sock
 
  vwait flag
  set flag
} RAW

test play-1.1.9 {play command, -channel, data with 1024 initial zeros} {
  proc endproc {snd sock} {
    set info [$snd info]
    close $sock
    $snd destroy
    set ::flag [lindex $info 6]
  }
  proc servproc { sock addr port } {
    set s [snack::sound snd -channel $sock -byteorder bigEndian]
    $s play -command [list endproc $s $sock]
  }

  set s [snack::sound snd -load ex1.wav]
  set s2 [snack::sound snd2]
  $s2 length 512
  set data [$s2 data -fileformat raw -byteorder bigendian]
  append data [$s data -fileformat raw -byteorder bigendian]
  $s destroy
  $s2 destroy

  set servsock [socket -server servproc 24685]

  set sock [socket localhost 24685]
  fconfigure $sock -translation binary -blocking 1
  if {$::tcl_version > 8.0} {
    fconfigure $sock -encoding binary
  }
  puts -nonewline $sock $data
  close $sock
 
  vwait flag
  set flag
} RAW

Added snack/tests/power.test.
















































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# Commands covered: sound power
#

package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test power-1.1 {power command} {
  set s [snack::sound snd -load ex1.wav]
  set tcl_precision 5
  set res [$s power]
  $s destroy
  set res
} {57.668 58.916 57.992 58.647 58.462 58.415 58.353 58.948 58.897 59.02 58.761 58.745 58.248 58.595 59.158 58.846 58.467 61.37 59.153 59.315 58.301 60.035 59.451 58.963 71.281 71.387 71.13 71.213 71.01 70.635 69.845 68.822 68.986 68.525 67.103 66.664 67.365 67.627 66.72 67.337 67.657 68.365 68.854 68.204 58.26 58.141 66.927 69.789 69.122 69.601 69.076 68.909 69.337 68.621 67.11 65.266 64.678 64.223 61.751 60.287 59.447 57.811 58.444 58.209 57.645 57.279 56.377 56.572 56.467 56.796 57.045 57.735 57.858 57.081 56.943 56.421 54.929 56.202 57.349 57.643 57.477 58.207 57.706 58.385 58.601 59.228 58.694 57.176 57.423 57.733 58.599 58.614 58.771 59.005 58.651 59.077 59.001 58.113 58.374}

test power-1.2 {power command} {
  set s [snack::sound snd -load ex1.wav]
  set tcl_precision 5
  set res [$s power -start 4000 -end 4256]
  $s destroy
  set res
} {71.387}

test power-2.1 {power command, with missing argument for -start option} {
  set s [snack::sound snd -load ex1.wav]
  catch {$s power -start} msg
  $s destroy
  set msg
} {No argument given for -start option}

test power-3.1 {power command, -progress option} {
  set res ""
  proc prog {msg frac} {
    lappend ::res [expr 0.1 * int(10*$frac)]
  }
  set s [snack::sound snd -load ex1.wav]
  $s power -progress prog
  $s destroy
  set res
} {0.0 1.0}

# cleanup
::tcltest::cleanupTests
return

Changes to snack/tests/record.test.

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# Commands covered: sound record/stop
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test record-1.1 {record command} {

Changes to snack/tests/reverse.test.

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# Commands covered: sound reverse
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test reverse-1.1 {reverse command, ex1.wav} {

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-
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# Commands covered: sound sample
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test sample-1.1 {sample command, get} {

Changes to snack/tests/sound.test.

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# Commands covered: sound creation
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test sound-1.1 {sound command, create with automatic name} {
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  set res
} {0 16000 0 0 Lin16 1 RAW 0}

test sound-4.2 {sound command, two sounds in different interpreters with same name} {
  set s1 [snack::sound snd -load ex1.wav]

  set i [interp create]
  $i eval package require -exact snack 2.0
  $i eval package require -exact snack 2.1
  $i eval snack::sound snd
  $i eval snd destroy
  interp delete $i

  set res [$s info]
  $s destroy
  set res

Changes to snack/tests/swap.test.

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# Commands covered: sound swap
#

package require -exact snack 2.0
package require -exact snack 2.1

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test swap-1.1 {swap command} {

Changes to snack/unix/Makefile.in.

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MOZILLA_DIR = @MOZILLA_DIR@

#

GENERIC_DIR = ../generic
UNIX_DIR    = ../unix

VERSION = 2.0
VERSION = 2.1

TCL_VERSION = @TCLVER@

CC        = @CC@

INCLUDES  = ${XINCLUDES} -I${TCL_INCPATH} -I${TK_INCPATH} @AINC@ @NISTINC@

CFLAGS    = -O @CFLAGS@ @AFLAG@ ${INCLUDES} @TCLAPI@ -I${GENERIC_DIR}

LIBSO     = -lc @ALIB@ @TCL_LIB_SPEC@

LIBSN     = -lc @TK_LIBS@ @ALIB@ @TCL_LIB_SPEC@ @TK_LIB_SPEC@

SHLIB_LD     = @SHLIB_LD@
SHLIB_SUFFIX = @SHLIB_SUFFIX@

all: libsound${SHLIB_SUFFIX} libsnack${SHLIB_SUFFIX} @DOSTUBLIB@ @LIBNIST@ editversion

OBJSO = sound.o jkSound.o jkSoundEngine.o jkSoundEdit.o jkSoundFile.o \
	g711.o @AOBJ@ jkFormatMP3.o jkSoundProc.o ffa.o jkPitchCmd.o \
	@STUBINITOBJ@ jkAudio.o jkMixer.o shape.o jkFilter.o jkSynthesis.o
	@STUBINITOBJ@ jkAudio.o jkMixer.o shape.o jkFilter.o jkSynthesis.o \
	jkFilterIIR.o

OBJSN = snack.o jkSound.o jkSoundEngine.o jkSoundEdit.o jkSoundFile.o \
	jkCanvSpeg.o jkCanvWave.o jkCanvSect.o ffa.o g711.o @AOBJ@ \
	jkFormatMP3.o jkSoundProc.o jkPitchCmd.o @STUBINITOBJ@ \
	jkAudio.o jkMixer.o shape.o jkFilter.o jkSynthesis.o
	jkAudio.o jkMixer.o shape.o jkFilter.o jkSynthesis.o jkFilterIIR.o

OBJSNST = snackStubLib.o

sound.o: $(GENERIC_DIR)/sound.c
	$(CC) -c $(CFLAGS) $(GENERIC_DIR)/sound.c

jkSound.o: $(GENERIC_DIR)/jkSound.c
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shape.o: $(GENERIC_DIR)/shape.c
	$(CC) -c $(CFLAGS) $(GENERIC_DIR)/shape.c

jkFilter.o: $(GENERIC_DIR)/jkFilter.c
	$(CC) -c $(CFLAGS) $(GENERIC_DIR)/jkFilter.c

jkFilterIIR.o: $(GENERIC_DIR)/jkFilterIIR.c
	$(CC) -c $(CFLAGS) $(GENERIC_DIR)/jkFilterIIR.c

jkSynthesis.o: $(GENERIC_DIR)/jkSynthesis.c
	$(CC) -c $(CFLAGS) $(GENERIC_DIR)/jkSynthesis.c

snackStubInit.o: $(GENERIC_DIR)/snackStubInit.c
	$(CC) -c $(CFLAGS) $(GENERIC_DIR)/snackStubInit.c

jkAudIO_hp.o: $(UNIX_DIR)/jkAudIO_hp.c
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+







	    chmod 755 dbrec.tcl ;\
	    sed s/wish8.3/wish${TCL_VERSION}/ widget.tcl > tmp ;\
	    mv -f tmp widget.tcl ;\
	    chmod 755 widget.tcl ;\
	    sed s/wish8.3/wish${TCL_VERSION}/ wrap.tcl > tmp ;\
	    mv -f tmp wrap.tcl ;\
	    chmod 755 wrap.tcl ;\
	    sed s/wish8.3/wish${TCL_VERSION}/ generator.tcl > tmp ;\
	    mv -f tmp generator.tcl ;\
	    chmod 755 generator.tcl ;\
	    sed s/wish8.3/wish${TCL_VERSION}/ notescale.tcl > tmp ;\
	    mv -f tmp notescale.tcl ;\
	    chmod 755 notescale.tcl ;\
	    sed s/wish8.3/wish${TCL_VERSION}/ oggstream.tcl > tmp ;\
	    mv -f tmp oggstream.tcl ;\
	    chmod 755 oggstream.tcl ;\
	    sed s/wish8.3/wish${TCL_VERSION}/ polarspec.tcl > tmp ;\
	    mv -f tmp polarspec.tcl ;\
	    chmod 755 polarspec.tcl ;\
	    sed s/wish8.3/wish${TCL_VERSION}/ pitch.tcl > tmp ;\
	    mv -f tmp pitch.tcl ;\
	    chmod 755 pitch.tcl ;\
	    sed s/wish8.3/wish${TCL_VERSION}/ phonetogram.tcl > tmp ;\
	    mv -f tmp phonetogram.tcl ;\
	    chmod 755 phonetogram.tcl ;\
	    sed s/wish8.3/wish${TCL_VERSION}/ CSLwithAB.tcl > tmp ;\
	    mv -f tmp CSLwithAB.tcl ;\
	    chmod 755 CSLwithAB.tcl ;\
	    sed s/wish8.3/wish${TCL_VERSION}/ xs.tcl > tmp ;\
	    mv -f tmp xs.tcl ;\
	    chmod 755 xs.tcl ;\
	    cd ../../unix ;\
	fi
LIBNIST = @NISTLIBS@ -lc @TCL_LIB_SPEC@ -L. @SNACK_STUB_LIB_FLAG@
OBJNIST = SphereFile.o

SphereFile.o: $(GENERIC_DIR)/SphereFile.c
	$(CC) -c $(CFLAGS) -DUSE_SNACK_STUBS $(GENERIC_DIR)/SphereFile.c

libsnacksphere${SHLIB_SUFFIX}: ${OBJNIST}
	${SHLIB_LD} ${OBJNIST} ${LIBNIST} -o libsnacksphere${SHLIB_SUFFIX}

LIBOGG = @OGGLIBS@ -lc @TCL_LIB_SPEC@ -L. @SNACK_STUB_LIB_FLAG@
OBJOGG = SnackOgg.o

SnackOgg.o: $(GENERIC_DIR)/SnackOgg.c
	$(CC) @OGGINC@ -c $(CFLAGS) -DUSE_SNACK_STUBS $(GENERIC_DIR)/SnackOgg.c

libsnackogg${SHLIB_SUFFIX}: ${OBJOGG}
	${SHLIB_LD} ${OBJOGG} ${LIBOGG} -o libsnackogg${SHLIB_SUFFIX}

install:
	@if [ ! -d ${SNACK_INSTALL_PATH}/snack${VERSION} ] ; then \
	    echo "Making directory ${SNACK_INSTALL_PATH}/snack${VERSION}"; \
	    mkdir ${SNACK_INSTALL_PATH}/snack${VERSION}; \
	    chmod 755 ${SNACK_INSTALL_PATH}/snack${VERSION}; \
        else true; \
        fi;
	cp -f libsound${SHLIB_SUFFIX} ${SNACK_INSTALL_PATH}/snack${VERSION}/
	cp -f libsnack${SHLIB_SUFFIX} ${SNACK_INSTALL_PATH}/snack${VERSION}/
	if test -f libsnackstub${VERSION}.a; then cp -f libsnackstub${VERSION}.a ${SNACK_INSTALL_PATH}/; fi
	if test -f libsnacksphere${SHLIB_SUFFIX}; then cp -f libsnacksphere${SHLIB_SUFFIX} ${SNACK_INSTALL_PATH}/snack${VERSION}/; fi
	if test -f libsnackogg${SHLIB_SUFFIX}; then cp -f libsnackogg${SHLIB_SUFFIX} ${SNACK_INSTALL_PATH}/snack${VERSION}/; fi
	cp -f snack.tcl ${SNACK_INSTALL_PATH}/snack${VERSION}/
	cp -f pkgIndex.tcl ${SNACK_INSTALL_PATH}/snack${VERSION}/
	@if [ -d "@MOZILLA_DIR@" ] ; then \
	    cp -rf ${SNACK_INSTALL_PATH}/snack${VERSION} ${MOZILLA_DIR}/tclplug/2.0/; \
	fi;

clean:

Changes to snack/unix/configure.

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ac_help="$ac_help
  --with-tk               directory containing tk configuration (tkConfig.sh)"
ac_help="$ac_help
  --enable-plugin         enable plug-in"
ac_help="$ac_help
  --with-mozilla=DIR      will install in DIR/tclplug/2.0/"
ac_help="$ac_help
  --with-nist-include=DIR use NIST/SPHERE includes in DIR"
ac_help="$ac_help
  --with-nist=DIR         use NIST/SPHERE libraries from DIR"
  --with-nist-lib=DIR     use NIST/SPHERE libraries in DIR"
ac_help="$ac_help
  --with-ogg-include=DIR  use Ogg/Vorbis includes in DIR"
ac_help="$ac_help
  --with-ogg-lib=DIR      use Ogg/Vorbis libraries in DIR"
ac_help="$ac_help
  --disable-stubs         disable stub support"

# Initialize some variables set by options.
# The variables have the same names as the options, with
# dashes changed to underlines.
build=NONE
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  fi
else
  ac_n= ac_c='\c' ac_t=
fi



SNACK_VERSION=2.0
SNACK_VERSION=2.1

#--------------------------------------------------------------------
#       See if there was a command-line option for where Tcl is;  if
#       not, assume that its top-level directory is a sibling of ours.
#--------------------------------------------------------------------


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	# Check whether --with-tcl or --without-tcl was given.
if test "${with_tcl+set}" = set; then
  withval="$with_tcl"
  with_tclconfig=${withval}
fi

	echo $ac_n "checking for Tcl configuration""... $ac_c" 1>&6
echo "configure:562: checking for Tcl configuration" >&5
echo "configure:568: checking for Tcl configuration" >&5
	if eval "test \"`echo '$''{'ac_cv_c_tclconfig'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  

	    # First check to see if --with-tcl was specified.
	    if test x"${with_tclconfig}" != x ; then
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	# Check whether --with-tk or --without-tk was given.
if test "${with_tk+set}" = set; then
  withval="$with_tk"
  with_tkconfig=${withval}
fi

	echo $ac_n "checking for Tk configuration""... $ac_c" 1>&6
echo "configure:653: checking for Tk configuration" >&5
echo "configure:659: checking for Tk configuration" >&5
	if eval "test \"`echo '$''{'ac_cv_c_tkconfig'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  

	    # First check to see if --with-tkconfig was specified.
	    if test x"${with_tkconfig}" != x ; then
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#--------------------------------------------------------------------

if test "x${prefix}" = "xNONE"; then
    prefix=/usr/local
fi
if test "x${exec_prefix}" = "xNONE"; then
    exec_prefix=$prefix
fi

SNACK_INSTALL_PATH=${prefix}/lib
SNACK_LIB_SPEC="-L${prefix}/lib -lsnack"
SNACK_INSTALL_PATH=${exec_prefix}/lib
SNACK_LIB_SPEC="-L${exec_prefix}/lib -lsnack"

#--------------------------------------------------------------------
#       Read in configuration information generated by Tcl and
#	arrange for it to be substituted into our Makefile.
#--------------------------------------------------------------------

file=$TCL_BIN_DIR/tclConfig.sh
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case $system in
    BSD/OS-4.*)
	AFLAG="-DOSS"
	ALIB="-lossaudio"
	AOBJ="jkAudIO_oss.o"
        ;;
    HP-UX-*.10.*)
    HP-UX-*.1*)
	if test "$CC" = "gcc" -o `$CC -v 2>&1 | grep -c gcc` != "0" ; then
	    CFLAGS=$CFLAGS
	else
	    CFLAGS="-Ae +z"
	fi
	AINC="-I/opt/audio/include"
	AFLAG="-DHPUX"
	ALIB="-L/opt/audio/lib -lAlib"
	AOBJ="jkAudIO_hp.o"
	SHLIB_LD="$SHLIB_LD +s"
	;;
    IRIX*)
	AFLAG="-DIRIX"
        ALIB="-laudio"
	AOBJ="jkAudIO_sgi.o"
	;;
    IRIX64-6.*)
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else
  enableval="no"
fi


if test "$enableval" != "no"; then
  echo $ac_n "checking Mozilla Home""... $ac_c" 1>&6
echo "configure:835: checking Mozilla Home" >&5
echo "configure:844: checking Mozilla Home" >&5
# Check for Mozilla home (install directory of netscape (plugins))
  # Check whether --with-mozilla or --without-mozilla was given.
if test "${with_mozilla+set}" = set; then
  withval="$with_mozilla"
  MOZILLA_DIR=$withval
else
  MOZILLA_DIR="$MOZILLA_HOME"
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fi

#--------------------------------------------------------------------
#	Get the path to the NIST/SPHERE distribution. This is
#	only necessary if you want to build the NIST package.
#--------------------------------------------------------------------

LIBNIST=""
# Check whether --with-nist or --without-nist was given.
if test "${with_nist+set}" = set; then
  withval="$with_nist"
  NIST_DIR=$withval
# Check whether --with-nist-include or --without-nist-include was given.
if test "${with_nist_include+set}" = set; then
  withval="$with_nist_include"
  NIST_INC_DIR=$withval
else
  NIST_DIR=""
  NIST_INC_DIR=""
fi

NISTINC="-I$NIST_DIR/include"
NISTLIBS="$NIST_DIR/lib/libsp.a $NIST_DIR/lib/libutil.a"
if test ! "$NIST_DIR" = ""; then
NISTINC="-I$NIST_INC_DIR"
if test "$NISTINC" = "-I"; then
  NISTINC=""
fi

# Check whether --with-nist-lib or --without-nist-lib was given.
if test "${with_nist_lib+set}" = set; then
  withval="$with_nist_lib"
  NIST_LIB_DIR=$withval
else
  NIST_LIB_DIR=""
fi

NISTLIBS="$NIST_LIB_DIR/libsp.a $NIST_LIB_DIR/libutil.a"
LIBNIST=""
if test ! "$NIST_LIB_DIR" = ""; then
  LIBNIST="libsnacksphere${SHLIB_SUFFIX}"
fi


#--------------------------------------------------------------------
#	Get the path to the Ogg/Vorbis installation. This is
#	only necessary if you want to build the snackogg package.
#--------------------------------------------------------------------

LIBOGG=""
# Check whether --with-ogg-include or --without-ogg-include was given.
if test "${with_ogg_include+set}" = set; then
  withval="$with_ogg_include"
  OGG_INC_DIR=$withval
else
  OGG_INC_DIR=""
fi

# Check whether --with-ogg-lib or --without-ogg-lib was given.
if test "${with_ogg_lib+set}" = set; then
  withval="$with_ogg_lib"
  OGG_LIB_DIR=$withval
else
  OGG_LIB_DIR=""
fi

OGGINC="-I$OGG_INC_DIR"
OGGLIBS="-L$OGG_LIB_DIR -lvorbisenc -lvorbis -logg"
if test ! "$OGG_LIB_DIR" = ""; then
  LIBOGG="libsnackogg${SHLIB_SUFFIX}"
fi

#--------------------------------------------------------------------
#	Disable stub support. This is necessary if you
#	want to run Snack with Tcl/Tk 8.0 up to 8.0.5
#	want to run Snack with Tcl/Tk versions 8.0 through 8.0.5
#--------------------------------------------------------------------

# Check whether --enable-stubs or --disable-stubs was given.
if test "${enable_stubs+set}" = set; then
  enableval="$enable_stubs"
  :
else
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    else
	STUBINITOBJ=""
    fi
    DOSTUBLIB=""
    SNIST_LIB_SPEC="-lsnack"
fi
#--------------------------------------------------------------------










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s%@AINC@%$AINC%g
s%@AFLAG@%$AFLAG%g
s%@ALIB@%$ALIB%g
s%@AOBJ@%$AOBJ%g
s%@NISTINC@%$NISTINC%g
s%@NISTLIBS@%$NISTLIBS%g
s%@LIBNIST@%$LIBNIST%g
s%@OGGINC@%$OGGINC%g
s%@OGGLIBS@%$OGGLIBS%g
s%@LIBOGG@%$LIBOGG%g
s%@TCLAPI@%$TCLAPI%g
s%@LD_SEARCH_FLAGS@%$LD_SEARCH_FLAGS%g
s%@TCLVER@%$TCLVER%g
s%@STUBINITOBJ@%$STUBINITOBJ%g
s%@DOSTUBLIB@%$DOSTUBLIB%g
s%@SNACK_STUB_LIB_FLAG@%$SNACK_STUB_LIB_FLAG%g
s%@SNACK_VERSION@%$SNACK_VERSION%g

Changes to snack/unix/configure.in.

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#! /bin/bash -norc
dnl	This file is an input file used by the GNU "autoconf" program to
dnl	generate the file "configure", which is run during Snack installation
dnl	to configure the system for the local environment.
AC_INIT(../generic/snack.h)

SNACK_VERSION=2.0
SNACK_VERSION=2.1

#--------------------------------------------------------------------
#       See if there was a command-line option for where Tcl is;  if
#       not, assume that its top-level directory is a sibling of ours.
#--------------------------------------------------------------------

SC_PATH_TCLCONFIG

#--------------------------------------------------------------------
#       See if there was a command-line option for where Tk is;  if
#       not, assume that its top-level directory is a sibling of ours.
#--------------------------------------------------------------------

SC_PATH_TKCONFIG

#--------------------------------------------------------------------

if test "x${prefix}" = "xNONE"; then
    prefix=/usr/local
fi
if test "x${exec_prefix}" = "xNONE"; then
    exec_prefix=$prefix
fi

SNACK_INSTALL_PATH=${prefix}/lib
SNACK_LIB_SPEC="-L${prefix}/lib -lsnack"
SNACK_INSTALL_PATH=${exec_prefix}/lib
SNACK_LIB_SPEC="-L${exec_prefix}/lib -lsnack"

#--------------------------------------------------------------------
#       Read in configuration information generated by Tcl and
#	arrange for it to be substituted into our Makefile.
#--------------------------------------------------------------------

file=$TCL_BIN_DIR/tclConfig.sh
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case $system in
    BSD/OS-4.*)
	AFLAG="-DOSS"
	ALIB="-lossaudio"
	AOBJ="jkAudIO_oss.o"
        ;;
    HP-UX-*.10.*)
    HP-UX-*.1*)
	if test "$CC" = "gcc" -o `$CC -v 2>&1 | grep -c gcc` != "0" ; then
	    CFLAGS=$CFLAGS
	else
	    CFLAGS="-Ae +z"
	fi
	AINC="-I/opt/audio/include"
	AFLAG="-DHPUX"
	ALIB="-L/opt/audio/lib -lAlib"
	AOBJ="jkAudIO_hp.o"
	SHLIB_LD="$SHLIB_LD +s"
	;;
    IRIX*)
	AFLAG="-DIRIX"
        ALIB="-laudio"
	AOBJ="jkAudIO_sgi.o"
	;;
    IRIX64-6.*)
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-
+







fi

#--------------------------------------------------------------------
#	Get the path to the NIST/SPHERE distribution. This is
#	only necessary if you want to build the NIST package.
#--------------------------------------------------------------------

LIBNIST=""
AC_ARG_WITH(nist,[  --with-nist=DIR         use NIST/SPHERE libraries from DIR],
        NIST_DIR=$withval, NIST_DIR="")
NISTINC="-I$NIST_DIR/include"
NISTLIBS="$NIST_DIR/lib/libsp.a $NIST_DIR/lib/libutil.a"
if test ! "$NIST_DIR" = ""; then
AC_ARG_WITH(nist-include,[  --with-nist-include=DIR use NIST/SPHERE includes in DIR],
        NIST_INC_DIR=$withval, NIST_INC_DIR="")
NISTINC="-I$NIST_INC_DIR"
if test "$NISTINC" = "-I"; then
  NISTINC=""
fi

AC_ARG_WITH(nist-lib,[  --with-nist-lib=DIR     use NIST/SPHERE libraries in DIR],
        NIST_LIB_DIR=$withval, NIST_LIB_DIR="")
NISTLIBS="$NIST_LIB_DIR/libsp.a $NIST_LIB_DIR/libutil.a"
LIBNIST=""
if test ! "$NIST_LIB_DIR" = ""; then
  LIBNIST="libsnacksphere${SHLIB_SUFFIX}"
fi


#--------------------------------------------------------------------
#	Get the path to the Ogg/Vorbis installation. This is
#	only necessary if you want to build the snackogg package.
#--------------------------------------------------------------------

LIBOGG=""
AC_ARG_WITH(ogg-include,[  --with-ogg-include=DIR  use Ogg/Vorbis includes in DIR],
        OGG_INC_DIR=$withval, OGG_INC_DIR="")
AC_ARG_WITH(ogg-lib,[  --with-ogg-lib=DIR      use Ogg/Vorbis libraries in DIR],
        OGG_LIB_DIR=$withval, OGG_LIB_DIR="")
OGGINC="-I$OGG_INC_DIR"
OGGLIBS="-L$OGG_LIB_DIR -lvorbisenc -lvorbis -logg"
if test ! "$OGG_LIB_DIR" = ""; then
  LIBOGG="libsnackogg${SHLIB_SUFFIX}"
fi

#--------------------------------------------------------------------
#	Disable stub support. This is necessary if you
#	want to run Snack with Tcl/Tk 8.0 up to 8.0.5
#	want to run Snack with Tcl/Tk versions 8.0 through 8.0.5
#--------------------------------------------------------------------

AC_ARG_ENABLE(stubs,[  --disable-stubs         disable stub support],,enableval2="no")

if test "$enableval2" = "no"; then
    AC_MSG_RESULT(will use stubs (normal))
    CFLAGS="$CFLAGS -DUSE_TCL_STUBS -DUSE_TK_STUBS"
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AC_SUBST(AINC)
AC_SUBST(AFLAG)
AC_SUBST(ALIB)
AC_SUBST(AOBJ)
AC_SUBST(NISTINC)
AC_SUBST(NISTLIBS)
AC_SUBST(LIBNIST)
AC_SUBST(OGGINC)
AC_SUBST(OGGLIBS)
AC_SUBST(LIBOGG)
AC_SUBST(TCLAPI)
AC_SUBST(LD_SEARCH_FLAGS)
AC_SUBST(TCLVER)
AC_SUBST(STUBINITOBJ)
AC_SUBST(DOSTUBLIB)
AC_SUBST(SNACK_STUB_LIB_FLAG)
AC_SUBST(SNACK_VERSION)

AC_OUTPUT(Makefile snackConfig.sh)

Changes to snack/unix/jkAudIO_hp.c.

1
2

3
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5
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7
8
9
1

2
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-
+







/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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  long            status;
  int             n = 0;

  if (A->debug > 1) Snack_WriteLog("  Enter SnackAudioOpen\n");

  ASetErrorHandler(newHandler);

  A->audio = AOpenAudio(NULL, NULL);
  if ((A->audio = AOpenAudio(NULL, NULL)) == NULL) {
    Tcl_AppendResult(interp, "Audio server not active (AOpenAudio returns NULL).", NULL);
    return TCL_ERROR;
  }

  attribs.type = ATSampled;
  attribs.attr.sampled_attr.sampling_rate = freq;
  attribs.attr.sampled_attr.channels = nchannels;
  A->nChannels = nchannels;
  A->convert = 0;

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396
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+
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-
+
+
+











-
+
+
+







  }
}

void
ASetRecGain(int gain)
{
  int g = min(max(gain, 0), 100);

  if (a == NULL) return;

  g = (int) (g * (a->max_input_gain - a->min_input_gain) / 100.0 + a->min_input_gain + 0.5);

  ASetSystemRecordGain(a, g, (long *)NULL);
  ASetSystemChannelGain(a, ASGTRecord, ACTMono, g, (long *)NULL);
}

void
ASetPlayGain(int gain)
{
  int g = min(max(gain, 0), 100);

  if (a == NULL) return;

  g = (int) (g * (a->max_output_gain - a->min_output_gain) / 100.0 + a->min_output_gain);

  ASetSystemChannelGain(a, ASGTPlay, ACTMono, g, (long *)NULL);
}

int
AGetRecGain()
{
  long g = 0;

  
  if (a == NULL) return(0);
  
  AGetSystemChannelGain(a, ASGTRecord, ACTMono, &g, (long *)NULL);

  g = (int) ((g - a->min_input_gain) * 100.0 / (a->max_input_gain - a->min_input_gain) + 0.5);

  return(g);
}

int
AGetPlayGain()
{
  long g = 0;

  
  if (a == NULL) return(0);
  
  AGetSystemChannelGain(a, ASGTPlay, ACTMono, &g, (long *)NULL);

  g = (int) ((g - a->min_output_gain) * 100.0 / (a->max_output_gain - a->min_output_gain));

  return(g);
}

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}

int
SnackAudioMaxNumberChannels(char *device)
{
  return(2);
}

int
SnackAudioMinNumberChannels(char *device)
{
  return(1);
}

void
SnackMixerGetInputJackLabels(char *buf, int n)
{
  strncpy(buf, "Microphone \"Line In\"", n);
  buf[n-1] = '\0';
}

Changes to snack/unix/jkAudIO_oss.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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#endif

static int mfd = 0;

static struct MixerLink mixerLinks[SOUND_MIXER_NRDEVICES][2];

static int littleEndian = 0;

static int minNumChan = 1;

int
SnackAudioOpen(ADesc *A, Tcl_Interp *interp, char *device, int mode, int freq,
	       int nchannels, int encoding)
{
  int format;
  int nformat;
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  speed = freq;
  if (ioctl(A->afd, SNDCTL_DSP_SPEED, &speed) == -1
      || abs(speed - freq) > freq / 100) {
    close(A->afd);
    Tcl_AppendResult(interp, "Failed setting sample frequency.", NULL);
    return TCL_ERROR;
  }

  
  /*  A->count = 0;*/
  A->frag_size = 0;
  if (ioctl(A->afd, SNDCTL_DSP_GETBLKSIZE, &A->frag_size) == -1) {
    close(A->afd);
    Tcl_AppendResult(interp, "Failed getting fragment size.", NULL);
    return TCL_ERROR;
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void
SnackAudioInit()
{
  union {
    char c[sizeof(short)];
    short s;
  } order;
  int afd, format, channels, nchannels;

  /* Compute the byte order of this machine. */

  order.s = 1;
  if (order.c[0] == 1) {
    littleEndian = 1;
  }

  if ((mfd = open(MIXER_NAME, O_RDWR, 0)) == -1) {
    fprintf(stderr, "Unable to open mixer %s\n", MIXER_NAME);
  }

  /* Determine minimum number of channels supported. */
  
  if ((afd = open(defaultDeviceName, O_WRONLY, 0)) == -1) {
    return;
  }
  
  if (littleEndian) {
    format = AFMT_S16_LE;
  } else {
    format = AFMT_S16_BE;
  }
  if (ioctl(afd, SNDCTL_DSP_SETFMT, &format) == -1) {
    close(afd);
    return;
  }
  channels = nchannels = 1;
  if (ioctl(afd, SNDCTL_DSP_CHANNELS, &channels) == -1
      || channels != nchannels) {
    minNumChan = channels;
  }
  close(afd);
}

void
SnackAudioFree()
{
  int i, j;

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  }
}

void
SnackAudioGetRates(char *device, char *buf, int n)
{
  int afd, freq, pos= 0, i;
  int f[] = { 8000, 11025, 16000, 22050, 32000, 44100, 48000 };
  int f[] = { 8000, 11025, 16000, 22050, 32000, 44100, 48000, 96000 };

  if ((afd = open(DEVICE_NAME, O_WRONLY, 0)) == -1) {
    buf[0] = '\0';
    return;
  }
  for (i = 0; i < 7; i++) {
  for (i = 0; i < 8; i++) {
    freq = f[i];
    if (ioctl(afd, SNDCTL_DSP_SPEED, &freq) == -1) break;
    if (abs(f[i] - freq) > freq / 100) continue;
    pos += sprintf(&buf[pos], "%d ", freq);
  }
  close(afd);
}

int
SnackAudioMaxNumberChannels(char *device)
{
  return(2);
}

int
SnackAudioMinNumberChannels(char *device)
{
  return(minNumChan);
}

void
SnackMixerGetInputJackLabels(char *buf, int n)
{
  char *jackLabels[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_LABELS;
  int i, recMask, pos = 0;

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SnackGetInputDevices(char **arr, int n)
{
  int i, j = 0;
  glob_t globt;
  
  glob("/dev/dsp*", 0, NULL, &globt);
  glob("/dev/audio*", GLOB_APPEND, NULL, &globt);
  glob("/dev/sound/dsp*", GLOB_APPEND, NULL, &globt);
  glob("/dev/sound/audio*", GLOB_APPEND, NULL, &globt);

  for (i = 0; i < globt.gl_pathc; i++) {
    if (j < n) {
      arr[j++] = (char *) SnackStrDup(globt.gl_pathv[i]);
    }
  }
  globfree(&globt);

  return(j);
}

int
SnackGetMixerDevices(char **arr, int n)
{
  int i, j = 0;
  glob_t globt;
  
  glob("/dev/mixer*", 0, NULL, &globt);
  glob("/dev/sound/mixer*", GLOB_APPEND, NULL, &globt);

  
  for (i = 0; i < globt.gl_pathc; i++) {
    if (j < n) {
      arr[j++] = (char *) SnackStrDup(globt.gl_pathv[i]);
    }
  }
  globfree(&globt);

  return(j);
}

Changes to snack/unix/jkAudIO_sgi.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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  strncpy(buf, "8000 11025 16000 22050 32000 44100 48000", n);
  buf[n-1] = '\0';
}

int
SnackAudioMaxNumberChannels(char *device)
{
  return(8);
  return(16);
}

int
SnackAudioMinNumberChannels(char *device)
{
  return(1);
}

void
SnackMixerGetInputJackLabels(char *buf, int n)
{
  strncpy(buf, "Microphone \"Line In\"", n);
  buf[n-1] = '\0';

Changes to snack/unix/jkAudIO_skel.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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}

int
SnackAudioMaxNumberChannels(char *device)
{
  return(2);
}

int
SnackAudioMinNumberChannels(char *device)
{
  return(1);
}

void
SnackMixerGetInputJackLabels(char *buf, int n)
{
  buf[0] = '\0';
}

Changes to snack/unix/jkAudIO_sun.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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}

int
SnackAudioMaxNumberChannels(char *device)
{
  return(2);
}

int
SnackAudioMinNumberChannels(char *device)
{
  return(1);
}

void
SnackMixerGetInputJackLabels(char *buf, int n)
{
  strncpy(buf, "Microphone \"Line In\"", n);
  buf[n-1] = '\0';
}

Changes to snack/unix/pkgIndex.tcl.dll.

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#
# Immediate loading of Snack because of item types etc.
#
# http://www.cogent.net/~duquette/tcl/namespaces.html
# http://www.wjduquette.com/tcl/namespaces.html
#

package ifneeded snack 2.0 "[list load [file join $dir libsnack.dll]];[list source [file join $dir snack.tcl]]"
package ifneeded snack 2.1 "[list load [file join $dir libsnack.dll]];[list source [file join $dir snack.tcl]]"

package ifneeded sound 2.0 [list load [file join $dir libsound.dll]]
package ifneeded sound 2.1 [list load [file join $dir libsound.dll]]

package ifneeded snacksphere 1.0 [list load [file join $dir libsnacksphere.dll]]
package ifneeded snacksphere 1.2 [list load [file join $dir libsnacksphere.dll]]

package ifneeded snackogg 1.1 [list load [file join $dir libsnackogg.dll]]

Changes to snack/unix/snack.tcl.

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# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#

package provide snack 2.0
package provide snack 2.1

# Set playback latency according to the environment variable PLAYLATENCY

if {$::tcl_platform(platform) == "unix"} {
    if {[info exists env(PLAYLATENCY)] && $env(PLAYLATENCY) > 0} {
	snack::audio playLatency $env(PLAYLATENCY)
    }
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			-variable [namespace current]::v(in$jack)] \
			-anchor w
	    }
	}
	if {[snack::mixer outputs] != ""} {
	    pack [label $wi.f.f2.lo -text "Output jacks:"]
	    foreach jack [snack::mixer outputs] {
		snack::mixer lines $jack [namespace current]::v(out$jack)
		snack::mixer output $jack [namespace current]::v(out$jack)
		pack [checkbutton $wi.f.f2.b$jack -text $jack \
			-variable [namespace current]::v(out$jack)] \
			-anchor w
	    }
	}
	pack [button $wi.b1 -text Close -command "destroy $wi"]
    }
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	if {$data(-format) == ""} {
	    set data(-format) RAW
	}
	set data(-format) [string toupper $data(-format)]
	if {$data(-initialdir) == ""} {
	    set data(-initialdir) "."
	}
	if {[string match macintosh $::tcl_platform(platform)]} {
	  set tmp [tk_getSaveFile -title $data(-title) \
	      -initialdir $data(-initialdir) -initialfile $data(-initialfile)]
	  if {[string compare [file ext $tmp] ""] == 0} {
	    append tmp [fmt2ext $data(-format)]
	  }
	  return $tmp
	} else {
	return [tk_getSaveFile -title $data(-title) -filetypes [saveTypes $data(-format)] -defaultextension [fmt2ext $data(-format)] -initialdir $data(-initialdir) -initialfile $data(-initialfile)]
	  return [tk_getSaveFile -title $data(-title) \
	      -filetypes [saveTypes $data(-format)] \
	      -defaultextension [fmt2ext $data(-format)] \
	      -initialdir $data(-initialdir) -initialfile $data(-initialfile)]
	}
    }

    set saveTypes ""

    proc addSaveTypes {typelist fmtlist} {
	variable saveTypes
	variable filebox
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	if {[string match horiz* $lm(orient)]} {
	    set lm(height) $a(-width)
	    set lm(width)  $a(-length)
	} else {
	    set lm(height) $a(-length)
	    set lm(width)  $a(-width)
	}
	set lm(maxtime) [clock seconds]
	set lm(maxlevel) 0.0

	proc drawLevelMeter {w} {
            upvar [namespace current]::${w}::levelmeter lm

	    set c ${w}_levelMeter
	    $c configure -width $lm(width) -height $lm(height)
	    $c delete all

	    $c create rectangle 0 0 $lm(width) $lm(height) \
		    -fill $lm(oncolor) -outline ""
	    $c create rectangle 0 0 0 0 -outline "" -fill $lm(offcolor) \
		    -tag mask
		    -tag mask1
	    $c create rectangle 0 0 0 0 -outline "" -fill $lm(offcolor) \
		    -tag mask2
	    $c create rectangle 0 0 [expr $lm(width)-1] [expr $lm(height)-1] \
		    -outline $lm(bg)
	    if {[string match horiz* $lm(orient)]} {
		$c coords mask [expr {$lm(level)*$lm(width)}] 0 \
		$c coords mask1 [expr {$lm(level)*$lm(width)}] 0 \
			$lm(width) $lm(height)
		$c coords mask2 [expr {$lm(level)*$lm(width)}] 0 \
			$lm(width) $lm(height)
		for {set x 5} {$x < $lm(width)} {incr x 5} {
		    $c create line $x 0 $x [expr $lm(width)-1] -fill black \
			    -width 2
		}
	    } else {
		$c coords mask 0 0 $lm(width) \
		$c coords mask1 0 0 $lm(width) \
			[expr {$lm(height)-$lm(level)*$lm(height)}]
		$c coords mask2 0 0 $lm(width) \
			[expr {$lm(height)-$lm(level)*$lm(height)}]
		for {set y 5} {$y < $lm(height)} {incr y 5} {
		    $c create line 0 [expr $lm(height)-$y] \
			    [expr $lm(width)-1] [expr $lm(height)-$y] \
			    -fill black -width 2
		}
	    }
	}

	proc levelMeterHandler {w cmd args} {
          upvar [namespace current]::${w}::levelmeter lm

          if {[string match conf* $cmd]} {
              switch -- [lindex $args 0] {
    	      -level {
		  set arg [lindex $args 1]
		  set arg [expr {$arg/32768.0}]
		  if {$arg < 0.00001} { set arg 0.00001 }
		  set lm(level) [expr {log($arg)/4.516+1.0}]
   		  if {$arg < 1} { set arg 1 }
		  set lm(level) [expr {log($arg)/10.3972}]
		  if {[clock seconds] - $lm(maxtime) > 2} {
		    set lm(maxtime) [clock seconds]
		    set lm(maxlevel) 0.0
		  }
		  if {$lm(level) > $lm(maxlevel)} {
		    set lm(maxlevel) $lm(level)
		  }

		  if {[string match horiz* $lm(orient)]} {
		    set l1 [expr {5*int($lm(level)*$lm(width)/5)}]
		    set l2 [expr {5*int($lm(maxlevel)*$lm(width)/5)}]
		      ${w}_levelMeter coords mask \
		    ${w}_levelMeter coords mask1 $l2 0 \
			      [expr {$lm(level)*$lm(width)}] 0 \
			      $lm(width) $lm(height)
			$lm(width) $lm(height)
		    ${w}_levelMeter coords mask2 [expr {$l2-5}] 0 \
			$l1 $lm(height)
		  } else {
		    set l1 [expr {5*int($lm(level)*$lm(height)/5)}]
		    set l2 [expr {5*int($lm(maxlevel)*$lm(height)/5)}]
		      ${w}_levelMeter coords mask 0 0 $lm(width) \
			      [expr {$lm(height)-$lm(level)*$lm(height)}]
		    ${w}_levelMeter coords mask1 0 0 $lm(width) \
			[expr {$lm(height)-$l2}]
		    ${w}_levelMeter coords mask2 0 [expr {$lm(height)-$l2+5}] \
			$lm(width) [expr {$lm(height)-$l1}]
		  }	 
	      }
	      -length {
		  if {[string match horiz* $lm(orient)]} {
		      set lm(width) [lindex $args 1]
		  } else {
		      set lm(height) [lindex $args 1]

Changes to snack/win/jkAudIO_win.c.

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/* 
 * Copyright (C) 1997-2001 Kare Sjolander <kare@speech.kth.se>
 * Copyright (C) 1997-2002 Kare Sjolander <kare@speech.kth.se>
 *
 * This file is part of the Snack Sound Toolkit.
 * The latest version can be found at http://www.speech.kth.se/snack/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
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    return(LIN16);
  }
}

void
SnackAudioGetRates(char *device, char *buf, int n)
{
  strncpy(buf, "8000 11025 16000 22050 32000 44100 48000", n);
  strncpy(buf, "8000 11025 16000 22050 32000 44100 48000 96000", n);
  buf[n-1] = '\0';
}

int
SnackAudioMaxNumberChannels(char *device)
{
  int i, devIndex = -1;
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	}
      }
    }
    */
  }
  return(2);
}

int
SnackAudioMinNumberChannels(char *device)
{
  return(1);
}

void
SnackMixerGetInputJackLabels(char *buf, int n)
{
  buf[0] = '\0';
}

Changes to snack/win/snack.dsp.

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!MESSAGE 
!MESSAGE NMAKE /f "snack.mak" CFG="snack - Win32 Debug"
!MESSAGE 
!MESSAGE Possible choices for configuration are:
!MESSAGE 
!MESSAGE "snack - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")
!MESSAGE "snack - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
!MESSAGE "snack - Win32 Tcl80" (based on "Win32 (x86) Dynamic-Link Library")
!MESSAGE 

# Begin Project
# PROP AllowPerConfigDependencies 0
# PROP Scc_ProjName ""
# PROP Scc_LocalPath ""
CPP=cl.exe
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# PROP Use_MFC 0
# PROP Use_Debug_Libraries 0
# PROP Output_Dir "Release"
# PROP Intermediate_Dir "Release"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SNACK_EXPORTS" /YX /FD /c
# ADD CPP /nologo /MT /W3 /GX /O2 /I "C:\Program Files\Tcl\include" /I "../generic" /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SNACK_EXPORTS" /D "WIN" /D "USE_TCL_STUBS" /D "USE_TK_STUBS" /D "TCL_81_API" /D "BUILD_snack" /YX /FD /c
# ADD CPP /nologo /MT /W3 /GX /O2 /I "C:\Tcl\include" /I "../generic" /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SNACK_EXPORTS" /D "WIN" /D "USE_TCL_STUBS" /D "USE_TK_STUBS" /D "TCL_81_API" /D "BUILD_snack" /YX /FD /c
# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD BASE RSC /l 0x409 /d "NDEBUG"
# ADD RSC /l 0x409 /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386
# ADD LINK32 tclstub83.lib tkstub83.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib /nologo /dll /machine:I386 /nodefaultlib:"msvcrt.lib" /out:"C:\Program Files\Tcl\lib\snack2.0\libsnack.dll" /libpath:"C:\Program Files\Tcl\lib"
# ADD LINK32 tclstub83.lib tkstub83.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib /nologo /dll /machine:I386 /nodefaultlib:"msvcrt.lib" /out:"C:\Tcl\lib\snack2.1\libsnack.dll" /libpath:"C:\Tcl\lib"

!ELSEIF  "$(CFG)" == "snack - Win32 Debug"

# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 1
# PROP BASE Output_Dir "Debug"
# PROP BASE Intermediate_Dir "Debug"
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 1
# PROP Output_Dir "Debug"
# PROP Intermediate_Dir "Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SNACK_EXPORTS" /YX /FD /GZ /c
# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /I "C:\Program Files\Tcl\include" /I "../generic" /D "_DEBUG" /D "WIN" /D "USE_TCL_STUBS" /D "USE_TK_STUBS" /D "TCL_81_API" /D "BUILD_snack" /D "WIN32" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SNACK_EXPORTS" /YX /FD /GZ /c
# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /I "C:\Tcl\include" /I "../generic" /D "_DEBUG" /D "WIN" /D "USE_TCL_STUBS" /D "USE_TK_STUBS" /D "TCL_81_API" /D "BUILD_snack" /D "WIN32" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SNACK_EXPORTS" /YX /FD /GZ /c
# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
# ADD BASE RSC /l 0x409 /d "_DEBUG"
# ADD RSC /l 0x409 /d "_DEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /pdbtype:sept
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib tclstub83.lib tkstub83.lib /nologo /dll /debug /machine:I386 /nodefaultlib:"msvcrt.lib" /out:"Debug/libsnack.dll" /pdbtype:sept /libpath:"C:\Program Files\Tcl\lib"
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib tclstub83.lib tkstub83.lib /nologo /dll /debug /machine:I386 /nodefaultlib:"msvcrt.lib" /out:"Debug/libsnack.dll" /pdbtype:sept /libpath:"C:\Tcl\lib"

!ELSEIF  "$(CFG)" == "snack - Win32 Tcl80"

# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 0
# PROP BASE Output_Dir "snack___Win32_Tcl80"
# PROP BASE Intermediate_Dir "snack___Win32_Tcl80"
# PROP BASE Ignore_Export_Lib 0
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 0
# PROP Output_Dir "snack___Win32_Tcl80"
# PROP Intermediate_Dir "snack___Win32_Tcl80"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /MT /W3 /GX /O2 /I "C:\Program Files\Tcl\include" /I "../generic" /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SNACK_EXPORTS" /D "WIN" /D "USE_TCL_STUBS" /D "USE_TK_STUBS" /D "TCL_81_API" /D "BUILD_snack" /YX /FD /c
# ADD CPP /nologo /MT /W3 /GX /O2 /I "C:\Program Files\Tcl\include80" /I "../generic" /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SNACK_EXPORTS" /D "WIN" /D "BUILD_snack" /YX /FD /c
# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD BASE RSC /l 0x409 /d "NDEBUG"
# ADD RSC /l 0x409 /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 tclstub83.lib tkstub83.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib /nologo /dll /machine:I386 /nodefaultlib:"msvcrt.lib" /out:"C:\Program Files\Tcl\lib\snack2.0\libsnack.dll" /libpath:"C:\Program Files\Tcl\lib"
# ADD LINK32 tcl80.lib tk80.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib /nologo /dll /machine:I386 /nodefaultlib:"msvcrt.lib" /out:"C:\Program Files\Tcl\lib\snack2.0\libsnack.dll" /libpath:"C:\Program Files\Tcl\lib"

!ENDIF 

# Begin Target

# Name "snack - Win32 Release"
# Name "snack - Win32 Debug"
# Name "snack - Win32 Tcl80"
# Begin Group "Source Files"

# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
# Begin Source File

SOURCE=..\generic\ffa.c
# End Source File
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# End Source File
# Begin Source File

SOURCE=..\generic\jkFilter.c
# End Source File
# Begin Source File

SOURCE=..\generic\jkSynthesis.c
SOURCE=..\generic\jkFilterIIR.c
# End Source File
# Begin Source File

SOURCE=..\generic\jkFormatMP3.c
# End Source File
# Begin Source File

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SOURCE=..\generic\jkSoundFile.c
# End Source File
# Begin Source File

SOURCE=..\generic\jkSoundProc.c
# End Source File
# Begin Source File

SOURCE=..\generic\jkSynthesis.c
# End Source File
# Begin Source File

SOURCE=..\generic\shape.c
# End Source File
# Begin Source File

SOURCE=..\generic\snack.c
# End Source File
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SOURCE=.\snack.def
# End Source File
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SOURCE=..\generic\snackStubInit.c

!IF  "$(CFG)" == "snack - Win32 Release"

!ELSEIF  "$(CFG)" == "snack - Win32 Debug"

!ELSEIF  "$(CFG)" == "snack - Win32 Tcl80"

# PROP Exclude_From_Build 1

!ENDIF 

# End Source File
# End Group
# Begin Group "Header Files"

# PROP Default_Filter "h;hpp;hxx;hm;inl"
# Begin Source File

Changes to snack/win/snackstub.dsp.

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# PROP BASE Target_Dir ""
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# ADD RSC /l 0x409 /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
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LIB32=link.exe -lib
# ADD BASE LIB32 /nologo
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# ADD LIB32 /nologo /out:"C:\Tcl\lib\snack2.1\snackstub21.lib"

!ELSEIF  "$(CFG)" == "snackstub - Win32 Debug"

# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 1
# PROP BASE Output_Dir "Debug"
# PROP BASE Intermediate_Dir "Debug"
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# ADD CPP /nologo /W3 /Gm /GX /ZI /Od /I "C:\Program Files\Tcl\include" /D "WIN32" /D "_DEBUG" /D "_MBCS" /D "_LIB" /YX /FD /GZ /c
# ADD CPP /nologo /W3 /Gm /GX /ZI /Od /I "C:\Tcl\include" /D "WIN32" /D "_DEBUG" /D "_MBCS" /D "_LIB" /YX /FD /GZ /c
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# ADD RSC /l 0x409 /d "_DEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LIB32=link.exe -lib
# ADD BASE LIB32 /nologo

Changes to snack/win/sound.dsp.

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!MESSAGE 
!MESSAGE NMAKE /f "sound.mak" CFG="sound - Win32 Debug"
!MESSAGE 
!MESSAGE Possible choices for configuration are:
!MESSAGE 
!MESSAGE "sound - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")
!MESSAGE "sound - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
!MESSAGE "sound - Win32 Tcl80" (based on "Win32 (x86) Dynamic-Link Library")
!MESSAGE 

# Begin Project
# PROP AllowPerConfigDependencies 0
# PROP Scc_ProjName ""
# PROP Scc_LocalPath ""
CPP=cl.exe
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# PROP Use_MFC 0
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# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SOUND_EXPORTS" /YX /FD /c
# ADD CPP /nologo /MT /W3 /GX /O2 /I "C:\Program Files\Tcl\include" /I "../generic" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SOUND_EXPORTS" /D "WIN" /D "USE_TCL_STUBS" /D "TCL_81_API" /D "BUILD_snack" /YX /FD /c
# ADD CPP /nologo /MT /W3 /GX /O2 /I "C:\Tcl\include" /I "../generic" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SOUND_EXPORTS" /D "WIN" /D "USE_TCL_STUBS" /D "TCL_81_API" /D "BUILD_snack" /YX /FD /c
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LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /machine:I386
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib tclstub83.lib /nologo /dll /machine:I386 /nodefaultlib:"msvcrt.lib" /out:"C:\Program Files\Tcl\lib\snack2.0\libsound.dll" /libpath:"C:\Program Files\Tcl\lib"
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib tclstub83.lib /nologo /dll /machine:I386 /nodefaultlib:"msvcrt.lib" /out:"C:\Tcl\lib\snack2.1\libsound.dll" /libpath:"C:\Tcl\lib"

!ELSEIF  "$(CFG)" == "sound - Win32 Debug"

# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 1
# PROP BASE Output_Dir "Debug"
# PROP BASE Intermediate_Dir "Debug"
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 1
# PROP Output_Dir "Debug"
# PROP Intermediate_Dir "Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SOUND_EXPORTS" /YX /FD /GZ /c
# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /I "C:\Program Files\Tcl\include" /I "../generic" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SOUND_EXPORTS" /D "WIN" /D "USE_TCL_STUBS" /D "TCL_81_API" /D "BUILD_snack" /YX /FD /GZ /c
# ADD CPP /nologo /MTd /W3 /Gm /GX /ZI /Od /I "C:\Tcl\include" /I "../generic" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SOUND_EXPORTS" /D "WIN" /D "USE_TCL_STUBS" /D "TCL_81_API" /D "BUILD_snack" /YX /FD /GZ /c
# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
# ADD BASE RSC /l 0x409 /d "_DEBUG"
# ADD RSC /l 0x409 /d "_DEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /pdbtype:sept
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /dll /debug /machine:I386 /out:"Debug/libsound.dll" /pdbtype:sept

!ELSEIF  "$(CFG)" == "sound - Win32 Tcl80"

# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 0
# PROP BASE Output_Dir "sound___Win32_Tcl80"
# PROP BASE Intermediate_Dir "sound___Win32_Tcl80"
# PROP BASE Ignore_Export_Lib 0
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 0
# PROP Output_Dir "sound___Win32_Tcl80"
# PROP Intermediate_Dir "sound___Win32_Tcl80"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
# ADD BASE CPP /nologo /MT /W3 /GX /O2 /I "C:\Program Files\Tcl\include" /I "../generic" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SOUND_EXPORTS" /D "WIN" /D "USE_TCL_STUBS" /D "TCL_81_API" /D "BUILD_snack" /YX /FD /c
# ADD CPP /nologo /MT /W3 /GX /O2 /I "C:\Program Files\Tcl\include80" /I "../generic" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" /D "SOUND_EXPORTS" /D "WIN" /D "BUILD_snack" /YX /FD /c
# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
# ADD BASE RSC /l 0x409 /d "NDEBUG"
# ADD RSC /l 0x409 /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib tclstub83.lib /nologo /dll /machine:I386 /nodefaultlib:"msvcrt.lib" /out:"C:\Program Files\Tcl\lib\snack2.0\libsound.dll" /libpath:"C:\Program Files\Tcl\lib"
# ADD LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib winmm.lib tcl80.lib /nologo /dll /machine:I386 /nodefaultlib:"msvcrt.lib" /out:"C:\Program Files\Tcl\lib\snack2.0\libsound.dll" /libpath:"C:\Program Files\Tcl\lib"

!ENDIF 

# Begin Target

# Name "sound - Win32 Release"
# Name "sound - Win32 Debug"
# Name "sound - Win32 Tcl80"
# Begin Group "Source Files"

# PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
# Begin Source File

SOURCE=..\generic\ffa.c
# End Source File
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138
139
140
141
142
143
144

145
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149
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151
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109
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111
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114

115
116
117
118
119
120
121
122







-
+







# End Source File
# Begin Source File

SOURCE=..\generic\jkFilter.c
# End Source File
# Begin Source File

SOURCE=..\generic\jkSynthesis.c
SOURCE=..\generic\jkFilterIIR.c
# End Source File
# Begin Source File

SOURCE=..\generic\jkFormatMP3.c
# End Source File
# Begin Source File

172
173
174
175
176
177
178




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186
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160
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+
+
+
+






-
-
-
-
-
-
-
-
-
-
-







SOURCE=..\generic\jkSoundFile.c
# End Source File
# Begin Source File

SOURCE=..\generic\jkSoundProc.c
# End Source File
# Begin Source File

SOURCE=..\generic\jkSynthesis.c
# End Source File
# Begin Source File

SOURCE=..\generic\shape.c
# End Source File
# Begin Source File

SOURCE=..\generic\snackStubInit.c

!IF  "$(CFG)" == "sound - Win32 Release"

!ELSEIF  "$(CFG)" == "sound - Win32 Debug"

!ELSEIF  "$(CFG)" == "sound - Win32 Tcl80"

# PROP Exclude_From_Build 1

!ENDIF 

# End Source File
# Begin Source File

SOURCE=..\generic\sound.c
# End Source File
# Begin Source File