1 #!/usr/bin/env python 1 #!/usr/bin/env python 2 2 3 from __future__ import division 3 from __future__ import division 4 #import ipdb | 4 import ipdb 5 import os 5 import os 6 import random 6 import random 7 import sys 7 import sys 8 import time 8 import time 9 9 10 from midiutil.MidiFile import MIDIFile as midifile 10 from midiutil.MidiFile import MIDIFile as midifile 11 import parse 11 import parse ................................................................................................................................................................................ 17 random.seed(time.time()) 17 random.seed(time.time()) 18 mymidi = midifile(15) 18 mymidi = midifile(15) 19 19 20 def main(): 20 def main(): 21 composition = { 21 composition = { 22 "intro": { 22 "intro": { 23 "body": { 23 "body": { 24 "lead_instr": { # Instrument 'melody' | 24 "pan_flute": { # Instrument 'melody' 25 "channel": 8, 25 "channel": 8, 26 "octave": 5, 26 "octave": 5, 27 "duration": 60, 27 "duration": 60, 28 "grammars": { # Notes for this instrument to use in this pi 28 "grammars": { # Notes for this instrument to use in this pi 29 "u": ["C2' B2 A3 D3 B C' D C2' z (u)", "C2' C2' C2' C2' | 29 "u": ["C2' B2 | A3 D3 || B | C' | D | C2' C2' | z | (u)" 30 "v": ["G2 F2 E2 F2 D5 (u)", "B/4 C/4' B/4 A/4 D2 z"], | 30 "v": ["G2 F2 | E2 F2 | D5 (u)", "B/4 C/4' B/4 A/4 | D2 D 31 "x": ["z4 (v)"], | 31 "x": ["z4 | (v)"], 32 }, 32 }, 33 }, 33 }, 34 "follow_instr": { # Instrument 'bass' | 34 "bass": { 35 "channel": 4, 35 "channel": 4, 36 "sync": "lead_instr", | 36 "sync": "pan_flute", 37 "octave": 2, 37 "octave": 2, 38 "duration": 60, 38 "duration": 60, 39 "grammars": { # Notes for this instrument to use in this pi 39 "grammars": { # Notes for this instrument to use in this pi 40 "u": ["C/2 C/2 C/2 z/2 (u)"], 40 "u": ["C/2 C/2 C/2 z/2 (u)"], 41 }, 41 }, 42 }, 42 }, > 43 "horn_timbre1": { > 44 "channel": 13, > 45 "octave": 2, > 46 "duration": 60, > 47 "grammars": { # Notes for this instrument to use in this pi > 48 "u": ["C4 D4 (u)"], > 49 }, > 50 }, > 51 "horn_timbre2": { > 52 "channel": 13, > 53 "octave": 2, > 54 "duration": 60, > 55 "grammars": { # Notes for this instrument to use in this pi > 56 "u": ["G4 A4 (u)"], > 57 }, > 58 }, 43 }, 59 }, 44 }, 60 }, 45 "section1": { 61 "section1": { 46 "body": { 62 "body": { 47 "lead_instr": { # Instrument 'melody' | 63 "guitar": { # Instrument 'melody' 48 "channel": 6, 64 "channel": 6, 49 "octave": 5, 65 "octave": 5, 50 "duration": 60, 66 "duration": 60, 51 "grammars": { # Notes for this instrument to use in this pi 67 "grammars": { # Notes for this instrument to use in this pi 52 "u": ["C E A F G z (u)", "C E A F G z (v)"], | 68 "u": ["C | E | A | F | G | z | (u)", "C | E | A | F | G 53 "v": ["A/2 D/2 G/2 C/2 | F/2 B/2 E/2 z/2 | (u)"], | 69 "v": ["A/2 D/2 | G/2 C/2 | F/2 B/2 | E/2 | z/2 | (u)"], 54 }, 70 }, 55 }, 71 }, 56 "follow_instr": { # Instrument 'bass' | 72 "bass": { # Instrument 'bass' 57 "channel": 4, 73 "channel": 4, 58 "sync": "lead_instr", | 74 "sync": "guitar", > 75 "octave": 2, > 76 "duration": 60, > 77 "grammars": { # Notes for this instrument to use in this pi > 78 "u": ["C/2 C/2 | C/2 z/2 | (u)"], > 79 }, > 80 }, > 81 "horn_timbre1": { > 82 "channel": 13, > 83 "octave": 2, > 84 "duration": 60, > 85 "grammars": { # Notes for this instrument to use in this pi > 86 "u": ["C4 D4 (u)"], > 87 }, > 88 }, > 89 "horn_timbre2": { > 90 "channel": 13, 59 "octave": 2, 91 "octave": 2, 60 "duration": 60, 92 "duration": 60, 61 "grammars": { # Notes for this instrument to use in this pi 93 "grammars": { # Notes for this instrument to use in this pi 62 "u": ["C/2 C/2 C/2 z/2 (u)"], | 94 "u": ["G4 A4 (u)"], 63 }, 95 }, 64 }, 96 }, 65 }, 97 }, 66 }, 98 }, 67 } 99 } 68 100 69 section_start = 0 101 section_start = 0 70 for section in ["intro", "section1"]: | 102 for section_name in ["intro", "section1"]: 71 print "Section " + section | 103 print "Section " + section_name 72 subsection_start = section_start 104 subsection_start = section_start 73 section = composition[section] | 105 section = composition[section_name] 74 for subsection in ["intro", "body", "outro"]: 106 for subsection in ["intro", "body", "outro"]: 75 try: | 107 if not section.has_key(subsection): > 108 continue 76 print "Subsection " + subsection | 109 print "\tSubsection " + subsection 77 subsection = section[subsection] | 110 subsection = section[subsection] 78 111 79 unordered_instrs = [] | 112 unordered_instrs = [] 80 for instr in subsection: | 113 for instr in subsection: 81 subsection[instr]["name"] = instr | 114 subsection[instr]["name"] = instr 82 if not "sync" in subsection[instr].keys(): | 115 if not "sync" in subsection[instr].keys(): 83 subsection[instr]["sync"] = None | 116 subsection[instr]["sync"] = None 84 unordered_instrs.append([subsection[instr]["sync"], instr]) | 117 unordered_instrs.append([subsection[instr]["sync"], instr]) 85 ordered_instrs = topsort.topsort(unordered_instrs) | 118 ordered_instrs = topsort.topsort(unordered_instrs) 86 ordered_instrs.remove(None) # None used as a placeholder for so | 119 ordered_instrs.remove(None) # None used as a placeholder for sort o > 120 for sync_instr in ordered_instrs: > 121 if sync_instr not in subsection.keys(): > 122 raise KeyError("The sync instrument '%s' does not exist in t 87 123 88 instrs = [] | 124 instrs = [] 89 syncs = {} | 125 syncs = {} 90 track = 0 | 126 track = 0 91 for instr in ordered_instrs: | 127 for instr in ordered_instrs: 92 print "Instrument " + instr | 128 print "\t\tInstrument " + instr > 129 # if instr == "guitar": > 130 # ipdb.set_trace() 93 instr = subsection[instr] | 131 instr = subsection[instr] 94 max_time = instr["duration"] | 132 max_time = instr["duration"] 95 instr_score, syncs = render_instr(instr, syncs, max_time) | 133 instr_score, syncs = render_instr(instr, syncs, max_time) 96 instrs.append(instr_score) | 134 instrs.append(instr_score) > 135 > 136 volume = 100 > 137 if instr.has_key("vol_offset"): > 138 volume += instr["vol_offset"] > 139 print "\t\t\tvolume offset = %d, nev volume = %d" % (instr[" 97 midify_instr_score(instr_score, track, instr["channel"], sub | 140 midify_instr_score(instr_score, track, instr["channel"], subsect 98 longest_score = max(instrs, key=lambda i: score_len(i)) | 141 longest_score = max(instrs, key=lambda i: score_len(i)) 99 subsection_start += score_len(longest_score) | 142 subsection_start += score_len(longest_score) 100 section_start += score_len(longest_score) | 143 section_start += score_len(longest_score) 101 track += 1 | 144 track += 1 102 except KeyError: < 103 pass < 104 with open("out.mid", "wb") as outfile: 145 with open("out.mid", "wb") as outfile: 105 mymidi.writeFile(outfile) 146 mymidi.writeFile(outfile) 106 147 107 148 108 149 109 def render_instr(instr, syncs, max_time): 150 def render_instr(instr, syncs, max_time): 110 for g in instr["grammars"]: 151 for g in instr["grammars"]: ................................................................................................................................................................................ 151 grammar = random.choice(time_filtered_grammars.keys()) 192 grammar = random.choice(time_filtered_grammars.keys()) 152 if score is None: 193 if score is None: 153 grammar = random.choice(time_filtered_grammars.keys()) 194 grammar = random.choice(time_filtered_grammars.keys()) 154 elif instr["sync"] is None: 195 elif instr["sync"] is None: 155 grammar = get_next_node(score); 196 grammar = get_next_node(score); 156 if grammar not in instr["grammars"].keys(): 197 if grammar not in instr["grammars"].keys(): 157 raise Exception("You tried to direct a grammar to a node that doesn' 198 raise Exception("You tried to direct a grammar to a node that doesn' > 199 > 200 if grammar not in time_filtered_grammars.keys(): > 201 return [], syncs > 202 158 phrases = time_filtered_grammars[grammar] 203 phrases = time_filtered_grammars[grammar] 159 if instr["name"] not in syncs.keys(): 204 if instr["name"] not in syncs.keys(): 160 syncs[instr["name"]] = [] 205 syncs[instr["name"]] = [] 161 syncs[instr["name"]].append({"node": grammar, "time": current_time}) 206 syncs[instr["name"]].append({"node": grammar, "time": current_time}) 162 207 163 return random.choice(phrases), syncs 208 return random.choice(phrases), syncs 164 209 ................................................................................................................................................................................ 190 return total 235 return total 191 236 192 237 193 def get_midi_note(octave, note): 238 def get_midi_note(octave, note): 194 return note + 12 * (octave+1) 239 return note + 12 * (octave+1) 195 240 196 241 197 def midify_instr_score(score, track, channel, t): | 242 def midify_instr_score(score, track, channel, t, volume): 198 # Assume get_midi_note() 243 # Assume get_midi_note() 199 global mymidi 244 global mymidi 200 245 201 for token in score: 246 for token in score: 202 if isinstance(token, parse.Chord): # Chords 247 if isinstance(token, parse.Chord): # Chords 203 for note in token.chord: 248 for note in token.chord: 204 note = get_midi_note(token.octave, note) 249 note = get_midi_note(token.octave, note) 205 mymidi.addNote(track=track, channel=channel,pitch=note, time=t, | 250 mymidi.addNote(track=track, channel=channel,pitch=note, time=t, 206 elif isinstance(token, parse.Note): # Individual notes 251 elif isinstance(token, parse.Note): # Individual notes 207 note = get_midi_note(token.octave, token.value) 252 note = get_midi_note(token.octave, token.value) 208 mymidi.addNote(track=track, channel=channel,pitch=note, time=t, dura | 253 mymidi.addNote(track=track, channel=channel,pitch=note, time=t, dura 209 elif isinstance(token, tree.Tree): 254 elif isinstance(token, tree.Tree): 210 continue 255 continue 211 t += token.duration 256 t += token.duration 212 257 213 return [] 258 return [] 214 259 215 260 216 if __name__ == "__main__": main() 261 if __name__ == "__main__": main()