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#!/usr/bin/env python
from __future__ import division
import os
import pdb
import random
import sys
import time
import parse
random.seed(time.time())
import parse
"u": ["C G/2 G/2 G/2 C B, F' C F C B F"],
"u": ["C G/2 G/2 G/2 C B, F' C F C B F (u)"],
# "w": ['E/4 A/4 D/4 G/4 F/4 F/4 B2'],
},
"score": "u u",
},
},
}
max_t = 0 # max time encountered so far. Used for movement timing
progression = "overview"
# progression = "zelda1"
for comp_name in progression.split():
comp_start_time = max_t
for instr_name, instr in composition[comp_name].iteritems():
generated_score = generate_score(instr["score"], instr["grammars"]) # Fill in the scores by generating them based on the grammars
# print generated_score
print generated_score
score = parse.parse(generated_score, default_octave=instr["octave"]) # Return Node/Chord objects
# Generate timestamps for the notes
t = comp_start_time
for note in range(len(score)):
score[note].time = t
score[note].duration *= tempo
t += score[note].duration
# print "time difference =", t-comp_start_time
# print "instrument duration =",composition[comp_name][instr_name]["duration"]
if (t-comp_start_time) > float(composition[comp_name][instr_name]["duration"]):
# print "here"
score = score[:note]
break
max_t = t if t > max_t else max_t
composition[comp_name][instr_name]["score"] = score
# Must be done after all note times keyed in, else you can't coordinate melodies with the rhythm chords
print "; Movement:", comp_name
movement_start += max_instr
for instr_name, instr in composition[comp_name].iteritems():
for grammar in instr["grammars"]:
for g in range(len(instr["grammars"][grammar])):
instr["grammars"][grammar][g] = parse.parse(instr["grammars"][grammar][g], default_octave=instr["octave"])
g = random.choice(instr["grammars"].keys())
ins_score = random.choice(instr["grammars"][g])
# ins_score = instr["grammars"][g]
score_complete = False
while score_complete is False:
if score_len(ins_score) >= 50:
score_complete = True
break
for i in range(len(ins_score)):
if isinstance(ins_score[i], tree.Tree):
unrolled_score = select_node(instr["grammars"][ins_score[i].name])
new_score = ins_score[:i-1] + unrolled_score + ins_score[i+i:]
ins_score = new_score
if i == len(ins_score):
score_complete = True
break
# composition[comp_name][instr_name]["score"] = transliterate_score(composition[comp_name][instr_name]["score"], key)
# print "\nMovement %s instrument %s" % (comp_name, instr_name)
# print composition[comp_name][instr_name]["score"]
final_score = generate_csound_score(composition[comp_name][instr_name]["score"], composition[comp_name][instr_name]["score_line"])
for line in final_score:
print line
def make_scale(key):
notes = ["A", "A#", "B", "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#"]
scale = [key]
pos = notes.index(key)
progression = [2,2,1,2,2,2,1]
for p in progression:
pos = (pos + p) % 12
scale.append(notes[pos])
return scale
def transliterate_score(score, key):
scale = make_scale(key)
scale_conversion = {
"I": 1,
"II": 2,
"III": 3,
"IV": 4,
"V": 5,
"VI": 6,
"VII": 7,
"VIII": 8,
}
keyed_score = []
for i in range(len(score)):
if isinstance(score[i], parse.Note):
score[i].value = scale[scale_conversion[score[i].value]-1]
elif isinstance(score[i], parse.Chord):
chord = []
root_note_index = scale.index(key) + scale_conversion[score[i].value]
chord.append(scale[root_note_index])
chord.append(scale[(root_note_index+3) % 8])
if score[i].chord_type == "m": # Minor chords, flat the 5th
chord.append(scale[(root_note_index+4) % 8])
else:
chord.append(scale[(root_note_index+5) % 8])
score[i].chord = chord
elif isinstance(score[i], parse.Rest):
pass
return score
csound_score.append(score_line % {"time": token.time, "octave": token.octave, "note": note, "duration": token.duration})
csound_score.append(score_line % {"time": t, "octave": token.octave, "note": note, "duration": token.duration})
elif isinstance(token, parse.Note): # Individual notes
note = csound_note_values[token.value]
csound_score.append(score_line % {"time": token.time, "octave": token.octave, "note": note, "duration": token.duration})
csound_score.append(score_line % {"time": t, "octave": token.octave, "note": note, "duration": token.duration})
t += token.duration
return csound_score
if __name__ == "__main__": main()
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