def rapids(chord, time, instrument):
"""
Rapids event generator.
Returns an odot bundle for the rapids engine. API:
/engine : "rapids"
/instrument : (string) -- instrument used
/samples : (list) -- a list of samples for polybuffer~
/suffix : (string) -- filename suffix
/time : (float) -- total time in seconds
/events : (list of bundles) -- bundles containing all of the
information to play back a list of samples, rapidly.
"""
# Figure out event times and update time if necessary:
event_times, time = rapids_time(chord, time)
# Figure out useful articulation categories:
categories = []
for pitch in chord:
categories.append(filterCategories(pitch, instrument, autocat[instrument]))
# create a dictionary of sound queries to be resolved by getSamples:
soundqueries = [{'pitch' : elem[0], 'artic': elem[1]} for elem in collect(chord, categories)
if not(not elem[1])] # discard impossible notes (empty category)
# execute the query, giving us the samples we'd need:
seqfiles = [one(getSamples(sq['pitch'], instrument, sq['artic'])) for sq in soundqueries]
print('-' * 100)
print(len(soundqueries) == len(seqfiles))
print('-' * 100)
# determine transposition ratios for sample playback:
#correct = [pitch - ratio(sample['midi']) for sample in seqfiles]
correct = [ratio(pair[0]['pitch'] - pair[1]['midi']) for pair in collect(soundqueries, seqfiles)]
# filter redundant files:
filenames = [e for e in set([sample['files'] for sample in seqfiles])]
# determine the index of sample playback in polybuffer~:
fileindices = [filenames.index(filename) + 1 for filename in [sq['files'] for sq in seqfiles]]
# construct bundle:
oengine = o.message('/engine', 'rapids')
oinstr = o.message('/insturment', instrument)
osamp = o.message('/samples', filenames)
osuffix = o.message('/suffix', '_' + instrument + '_rapids.wav')
otime = o.message('/time', time)
events = []
for index, value in enumerate(fileindices):
opitch = o.message('/pitch', correct[index])
obuffer = o.message('/buffer', instrument + '.rapids.' + str(value))
oeventtime = o.message('/event/time', event_times[index] + 0.02)
events.append(o.bundle(messages = [opitch, obuffer, oeventtime]))
oevents = o.message('/events', events)
return o.bundle(messages = [oengine, oinstr, osamp, osuffix, otime, oevents])
def reartic(pitch, time, instrument):
"""
Rearticulation event generator.
Returns an odot bundle for the rearticulation engine. API:
/engine : "reartic"
/samples : (list) -- a list of samples for polybuffer~
/suffix : (string) -- filename suffix
/time : (float) -- total time in seconds
/events : (list of bundles) -- time-tagged bundles containing
all of the articulations & envelopes
This engine is different from others due to the fact that it
plays multiple sounds, arranged in time. (For this reason, the
current implementation does not generalize engines into a helper
structure yet, which violates DRY and will be fixed in time.)
"""
# event_times = subdivide(time) # for o.schedule
event_times, event_lengths = reartic_time(time)
categories = []
for event in event_lengths:
categories.append(filterCategories(pitch, instrument, autocat[instrument]))
soundqueries = [{'pitch': pitch, 'artic': category} for category in categories
if not (not category)] # discard impossible notes
seqfiles = [one(getSamples(sq['pitch'], instrument, sq['artic'])) for sq in soundqueries]
correct = [ratio(pitch - sound['midi']) for sound in seqfiles]
filenames = [e for e in set([sample['files'] for sample in seqfiles])]
fileindices = [filenames.index(filename) + 1 for filename in [sq['files'] for sq in seqfiles]]
event_times = [e + .05 for e in event_times]
oengine = o.message('/engine', 'reartic')
oinstr = o.message('/instrument', instrument)
osamp = o.message('/samples', filenames)
osuffix = o.message('/suffix', '_' + instrument + '_reartic.wav')
otime = o.message('/time', time)
events = []
envfuncs = [env_uniform, env_jagged, amp_in_out]
for index, value in enumerate(fileindices):
opitch = o.message('/pitch', correct[index])
obuffer = o.message('/buffer', instrument + '.reartic.' + str(value))
oeventtime = o.message('/event/time', event_times[index])
oamp = o.message('/envelope', one(envfuncs)(event_lengths[index]))
events.append(o.bundle(messages = [opitch, obuffer, oeventtime, oamp]))
oevents = o.message('/events', events)
return o.bundle(messages = [oengine, oinstr, osamp, osuffix, otime, oevents])
def moans(pitch, time, instrument):
"""
Engine Main.
Returns an odot bundle for the moans engine. API:
/engine : "moan"
/samples : (string) -- a sample to use
/suffix : (string) -- filename suffix
/time : (float) -- total time in seconds
/pitch : (list) -- curve~ list for transposition ratios
/amp : (list) -- curve~ list for amplitude envelope
Upon receipt, engine queues /samples & executes envelopes
"""
categories = filterCategories(pitch, instrument, autocat[instrument])
if len(categories) is 0:
return o.bundle()
query = one(getSamples(pitch, instrument, categories))
correct = pitch - query['midi']
sample = query['files']
oengine = o.message('/engine', 'moan')
osamp = o.message('/samples', sample)
ofilename = o.message('/suffix', '_' + instrument + '_moan.wav')
otime = o.message('/time', time)
opitch = o.message('/pitch', one([pitch_peak, pitch_unidir, pitch_cross])(time, correct))
oamps = o.message('/amp', one([amp_in_out, amp_in, amp_out])(time))
return o.bundle(messages = [oengine, osamp, ofilename, otime, opitch, oamps])
def perc(pitch, time, instrument):
"""
Engine Main.
Returns an odot bundle for the perc engine. API:
/engine : "perc"
/samples: (string) -- a sample to use
/suffix : (string) -- filename suffix
/time : (float) -- total time in seconds
/pitch : (float) -- transposition factor
/amp : (list) -- line~ list for amplitude envelope
"""
categories = autocat[instrument]
categories = filterCategories(pitch, instrument, categories)
if len(categories) is 0:
return o.bundle()
query = one(getSamples(pitch, instrument, categories))
correct = pitch - query["midi"]
sample = query["files"]
oengine = o.message("/engine", "perc")
osamp = o.message("/samples", sample)
ofilename = o.message("/suffix", "_" + instrument + "_perc.wav")
otime = o.message("/time", time)
opitch = o.message("/pitch", ratio(correct))
oamps = o.message("/amp", amp_env(time))
return o.bundle(messages=[oengine, osamp, ofilename, otime, opitch, oamps])