11 import tree 11 import tree 12 12 13 random.seed(time.time()) 13 random.seed(time.time()) 14 14 15 def main(): 15 def main(): 16 composition = { 16 composition = { 17 "verse1": { 17 "verse1": { > 18 "intro": { 18 "melody": { # Instrument 'melody' | 19 "melody": { # Instrument 'melody' 19 "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s | 20 "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(no 20 "octave": 8, | 21 "octave": 8, 21 "duration": 10, | 22 "duration": 10, 22 "grammars": { # Notes for this instrument to use in this piece | 23 "grammars": { # Notes for this instrument to use in this pi > 24 "u": ["G/2 G/2 G/4 G/4 A/4 A/4 A/2 G G A A A3 (w)"], > 25 "w": ["E E F F G/2 G/2 G3 (u)"], > 26 }, > 27 }, > 28 }, > 29 "body": { > 30 "melody": { # Instrument 'melody' > 31 "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(no > 32 "octave": 8, > 33 "duration": 10, > 34 "grammars": { # Notes for this instrument to use in this pi 23 "u": ["C G/2 G/2 G/2 C B, F' C F C B F (w)"], | 35 "u": ["C G/2 G/2 G/2 C B, F' C F C B F (w)"], 24 "w": ["E/4 A/4 D/4 G/4 F/4 F/4 B2 (u)"], | 36 "w": ["E/4 A/4 D/4 G/4 F/4 F/4 B2 (u)"], 25 }, | 37 }, 26 }, | 38 }, 27 }, | 39 }, > 40 }, 28 "verse2": { 41 "verse2": { > 42 "body": { 29 "melody": { # Instrument 'melody' | 43 "melody": { # Instrument 'melody' 30 "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s | 44 "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(no 31 "octave": 8, | 45 "octave": 8, 32 "duration": 10, | 46 "duration": 10, 33 "grammars": { # Notes for this instrument to use in this piece | 47 "grammars": { # Notes for this instrument to use in this pi 34 "u": ["C C C C F/2 F/2 F/2 (u)", "D D G/2 A/2 D D (u)"], | 48 "u": ["C C C C F/2 F/2 F/2 (u)", "D D G/2 A/2 D D (u)"], 35 }, | 49 }, 36 }, | 50 }, 37 "harmony": { # Instrument 'melody' | 51 "harmony": { # Instrument 'melody' 38 "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s | 52 "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(no 39 "octave": 8, | 53 "octave": 8, 40 "duration": 10, | 54 "duration": 10, 41 "grammars": { # Notes for this instrument to use in this piece | 55 "grammars": { # Notes for this instrument to use in this pi 42 "u": ["C C C C F/2 F/2 F/2 (u)", "D D G/2 A/2 D D (u)"], | 56 "u": ["C C C C F/2 F/2 F/2 (u)", "D D G/2 A/2 D D (u)"], > 57 }, 43 }, 58 }, 44 }, 59 }, 45 }, 60 }, 46 } 61 } 47 print '''f1 0 512 10 1 62 print '''f1 0 512 10 1 48 f2 0 8192 10 .24 .64 .88 .76 .06 .5 .34 .08 63 f2 0 8192 10 .24 .64 .88 .76 .06 .5 .34 .08 49 f3 0 1025 10 1 64 f3 0 1025 10 1 50 t 0 60 | 65 t 0 100 51 ''' 66 ''' 52 67 53 section_start = 0 68 section_start = 0 54 for section in ["verse1", "verse2"]: 69 for section in ["verse1", "verse2"]: > 70 print "; Section " + section > 71 subsection_start = section_start 55 section = composition[section] 72 section = composition[section] 56 # for subsection in section | 73 for subsection in ["intro", "body", "outro"]: > 74 try: > 75 print "; Subsection " + subsection > 76 subsection = section[subsection] 57 instrs = [] | 77 instrs = [] 58 for instr in section.values(): | 78 for instr in subsection: > 79 print ";Instrument " + instr > 80 instr = subsection[instr] 59 sync = None | 81 sync = None 60 max_time = instr["duration"] | 82 max_time = instr["duration"] 61 instr_score = render_instr(instr, sync, max_time) | 83 instr_score = render_instr(instr, sync, max_time) 62 instrs.append(instr_score) | 84 instrs.append(instr_score) 63 for line in generate_csound_score(instr_score, instr["score_line"], | 85 for line in generate_csound_score(instr_score, instr["score_ 64 print line | 86 print line 65 longest_score = max(instrs, key=lambda i: score_len(i)) | 87 longest_score = max(instrs, key=lambda i: score_len(i)) > 88 subsection_start += score_len(longest_score) 66 section_start += score_len(longest_score) | 89 section_start += score_len(longest_score) > 90 except KeyError: > 91 pass 67 92 68 93 69 94 70 def render_instr(instr, sync, max_time): 95 def render_instr(instr, sync, max_time): 71 grammars = instr["grammars"] 96 grammars = instr["grammars"] 72 for g in instr["grammars"]: 97 for g in instr["grammars"]: 73 for i in range(len(grammars[g])): 98 for i in range(len(grammars[g])): ................................................................................................................................................................................ 98 options = [] 123 options = [] 99 for g in range(len(grammars[node])): 124 for g in range(len(grammars[node])): 100 if score_len(grammars[node][g]) <= time_remaining: 125 if score_len(grammars[node][g]) <= time_remaining: 101 options.append(grammars[node][g]) 126 options.append(grammars[node][g]) 102 if len(options) == 0: 127 if len(options) == 0: 103 raise ValueError("No available grammars that will fit in the score") 128 raise ValueError("No available grammars that will fit in the score") 104 if sync: 129 if sync: 105 | 130 pass 106 else: 131 else: 107 phrase = random.choice(options) 132 phrase = random.choice(options) 108 score = score[:node_index-1] + phrase + score[node_index+1:] 133 score = score[:node_index-1] + phrase + score[node_index+1:] 109 return score 134 return score 110 135 111 136 112 def score_len(score): 137 def score_len(score):