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"sync_test": {
"body": {
"lead_instr": { # Instrument 'melody'
"score_line": "i1 %(time)f %(duration)f 7000 %(octave)d.%(note)s %(octave)d.%(note)s 0 6",
"octave": 8,
"duration": 30,
"grammars": { # Notes for this instrument to use in this piece
"u": ["D/4 D/4 D/4 D/4 (u)"],
"v": ["C/4 C/4 C/4 C/4 (v)"],
"u": ["D/4 D/4 D/4 D/4 (v)"],
"v": ["C/4 C/4 C/4 C/4 (u)"],
},
},
"follow_instr": { # Instrument 'melody'
"score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s 1",
"sync": "lead_instr",
"octave": 8,
"duration": 30,
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def render_instr(instr, syncs, max_time):
for g in instr["grammars"]:
for i in range(len(instr["grammars"][g])):
instr["grammars"][g][i] = parse.parse(instr["grammars"][g][i])
score= []
try:
score, syncs = choose_phrase(instr, syncs, 0, max_time)
score, syncs = choose_phrase(instr, syncs, 0, max_time, None)
while True:
score_index_to_replace = None
for item in range(len(score)): # Optimize this by caching the index of the last node I replaced and startng there
if isinstance(score[item], tree.Tree):
if isinstance(score[item], tree.Tree): # Also, make this use the find_next_node() function (or whatever I called it)
score_index_to_replace = item
if score_index_to_replace is None:
raise ValueError("No more nodes to fill in")
time_remaining = max_time - score_len(score)
new_phrase, syncs = choose_phrase(instr, syncs, score_len(score), time_remaining)
new_phrase, syncs = choose_phrase(instr, syncs, score_len(score), time_remaining, score)
score = score[:score_index_to_replace-1] + new_phrase + score[score_index_to_replace+1:]
except ValueError:
return (score, syncs)
def choose_phrase(instr, syncs, current_time, time_remaining):
def choose_phrase(instr, syncs, current_time, time_remaining, score):
'''Filters grammars for ones that match the sync option, and phrases that fit the time remaining in the score'''
time_filtered_grammars = {}
for grammar in instr["grammars"]:
fitting_phrases = get_phrases_that_fit(instr["grammars"][grammar], time_remaining)
if len(fitting_phrases) > 0:
time_filtered_grammars[grammar] = fitting_phrases
if len(time_filtered_grammars.keys()) == 0:
raise ValueError("No available grammars that will fit in the score")
grammar = None
if instr["sync"] is not None:
guiding_instr = instr["sync"]
sync_node = get_sync_node_at_time(syncs[guiding_instr], current_time)
if sync_node in time_filtered_grammars.keys():
grammar = sync_node
else:
grammar = random.choice(time_filtered_grammars.keys())
if grammar is None:
if score is None:
grammar = random.choice(time_filtered_grammars.keys())
elif instr["sync"] is None:
grammar = get_next_node(score);
phrases = time_filtered_grammars[grammar]
if instr["name"] not in syncs.keys():
syncs[instr["name"]] = []
syncs[instr["name"]].append({"node": grammar, "time": current_time})
return random.choice(phrases), syncs
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def get_sync_node_at_time(syncs, t):
for s in range(len(syncs)):
if syncs[s]["time"] >= t:
return syncs[s]["node"]
def get_next_node(score):
for token in score:
if isinstance(token, tree.Tree):
return token.name
def score_len(score):
total = 0
for n in score:
if not isinstance(n, tree.Tree):
total += n.duration
return total
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