class Sequencer:
def __init__(self, logger=None):
if logger is None:
logger = logging.getLogger("Sequencer")
self.logger = logger
self._params = {"tracks": {},
"buses": {},
"reference_colour": None,
"max_colour_distance": 1.0}
self._sounds = {}
self._tracks = collections.OrderedDict()
self._buses = collections.OrderedDict()
self._groups = []
self._scheduler = Scheduler()
self.control_panels = set()
self._setup_colour_receiver()
SynthController.kill_potential_engine_from_previous_process()
self._synth = SynthController()
self._synth.launch_engine()
self._synth.connect(self._synth.lang_port)
self._setup_websocket_server()
def _setup_colour_receiver(self):
self._current_colour = None
self._colour_receiver = ColourReceiver()
self._colour_receiver.received_colour = self.set_current_colour
self._colour_receiver.start()
def set_current_colour(self, rgb):
self._current_colour = rgb
if self._params["reference_colour"] is not None:
self._estimate_age()
self._set_age_dependent_rates()
for control_panel in self.control_panels:
control_panel.send_params()
def _estimate_age(self):
distance_to_reference = self._colour_distance(
self._current_colour, self._params["reference_colour"])
age = distance_to_reference / self._params["max_colour_distance"]
age = min(age, 1.0)
self._estimated_age = age
# self.log("estimated age: %.2f" % self._estimated_age)
def _set_age_dependent_rates(self):
for track in self._tracks.values():
params = self._params["tracks"][track["name"]]
if params["age_type"] is not None:
params["rate"] = self._age_dependent_rate(params["age_type"])
# self.log("rate %.1f for age_type=%s, track %s" % (
# params["rate"], params["age_type"], track["name"]))
self._on_track_params_changed(track)
def _age_dependent_rate(self, age_type):
if age_type == "decay":
return RATE_MIN + (RATE_MAX - RATE_MIN) * (1 - self._estimated_age)
else:
return RATE_MIN + (RATE_MAX - RATE_MIN) * self._estimated_age
def _colour_distance(self, colour1, colour2):
diffs = [colour1[n] - colour2[n]
for n in range(3)]
return math.sqrt(sum([diff*diff for diff in diffs]))
def calibrate_colour(self):
self.log("calibrate_colour %s" % self._current_colour)
if self._current_colour is not None:
self._params["reference_colour"] = self._current_colour
def get_tracks(self):
return self._tracks
def get_buses(self):
return self._buses
def get_params(self):
return self._params
def play(self, sound, looped=0):
track_name = self._sounds[sound]["track_name"]
track = self._tracks[track_name]
params = self._params["tracks"][track_name]
self._synth.play(
sound,
params["pan"],
params["fade"],
params["gain"] + params["gain_adjustment"],
params["rate"],
looped,
params["send"],
params["send_gain"] + params["gain_adjustment"],
params["comp_threshold"])
def schedule(self, action, delay):
self._scheduler.schedule(action, delay)
def is_playing(self, sound):
return self._synth.is_playing(sound)
def load_sounds(self, pattern):
for sound in glob.glob(pattern):
self.load_sound(sound)
def load_sound(self, sound):
self._synth.load_sound(sound)
self._sounds[sound] = {}
def add_track(self, name, pattern, params_overrides):
params = copy.copy(DEFAULT_SOUND_PARAMS)
params.update(params_overrides)
sounds = glob.glob(pattern)
track = {"name": name,
"sounds": sounds}
self._params["tracks"][name] = params
for sound in sounds:
self._sounds[sound]["track_name"] = name
self._tracks[name] = track
def add_group(self, pattern, params):
group = Group(self, params)
for sound in glob.glob(pattern):
group.add(sound)
self._groups.append(group)
def add_bus(self, name):
self._synth.add_bus(name)
self._buses[name] = {"name": name}
self._params["buses"][name] = DEFAULT_BUS_PARAMS
def set_bus_params(self, bus, new_params):
params = self._params["buses"][bus]
params.update(new_params)
self._synth.set_bus_params(
bus,
params["reverb_mix"],
params["reverb_room"],
params["reverb_damp"])
def try_to_load_params(self):
if os.path.exists(PARAMS_FILENAME):
self.load_params()
def run_main_loop(self):
while True:
self._process()
time.sleep(.1)
def _process(self):
self._synth.process()
self._scheduler.run_scheduled_events()
self._colour_receiver.serve()
for group in self._groups:
group.process()
def _setup_websocket_server(self):
self._server = WebsocketServer(ControlPanelHandler, {"sequencer": self})
server_thread = threading.Thread(target=self._server.start)
server_thread.daemon = True
server_thread.start()
def set_global_param(self, param, value):
self._params[param] = value
def set_track_param(self, track_name, param, value):
track = self._tracks[track_name]
params = self._params["tracks"][track_name]
params[param] = value
self._on_track_params_changed(track)
def _on_tracks_params_changed(self):
for track in self._tracks.values():
self._on_track_params_changed(track)
def _on_track_params_changed(self, track):
params = self._params["tracks"][track["name"]]
for sound in track["sounds"]:
if self.is_playing(sound):
self._synth.set_param(sound, "gain",
params["gain"] + params["gain_adjustment"])
self._synth.set_param(sound, "send_gain",
params["send_gain"] + params["gain_adjustment"])
self._synth.set_param(sound, "rate", params["rate"])
def save_params(self):
f = open(PARAMS_FILENAME, "w")
cPickle.dump(self._params, f)
f.close()
def load_params(self):
f = open(PARAMS_FILENAME, "r")
self._params = cPickle.load(f)
self._on_tracks_params_changed()
f.close()
def log(self, string):
print string
self.logger.debug(string)
class Orchestra:
SAMPLE_RATE = 44100
BYTES_PER_SAMPLE = 2 # mpg123, used by predecode, outputs 16-bit PCM mono
PLAYABLE_FORMATS = ['mp3', 'flac', 'wav', 'm4b']
JACK = "jack"
SSR = "ssr"
@staticmethod
def add_parser_arguments(parser):
parser.add_argument("--rt", action="store_true", dest="realtime")
parser.add_argument("-t", "--torrent", dest="torrentname", default="")
parser.add_argument("-z", "--timefactor", dest="timefactor", type=float, default=1)
parser.add_argument("--start", dest="start_time", type=float, default=0)
parser.add_argument("-q", "--quiet", action="store_true", dest="quiet")
parser.add_argument("--pretend-sequential", action="store_true", dest="pretend_sequential")
parser.add_argument("--gui", action="store_true", dest="gui_enabled")
parser.add_argument("--fast-forward", action="store_true", dest="ff")
parser.add_argument("--fast-forward-to-start", action="store_true", dest="ff_to_start")
parser.add_argument("--quit-at-end", action="store_true", dest="quit_at_end")
parser.add_argument("--loop", dest="loop", action="store_true")
parser.add_argument("--max-pause-within-segment", type=float)
parser.add_argument("--max-segment-duration", type=float)
parser.add_argument("--looped-duration", dest="looped_duration", type=float)
parser.add_argument("-o", "--output", dest="output", type=str, default=Orchestra.JACK)
parser.add_argument("--include-non-playable", action="store_true")
parser.add_argument("-f", "--file", dest="selected_files", type=int, nargs="+")
parser.add_argument("--title", type=str, default="")
parser.add_argument("--pretend-audio", dest="pretend_audio_filename")
parser.add_argument("--capture-audio")
parser.add_argument("--leading-pause", type=float, default=0)
_extension_re = re.compile('\.(\w+)$')
def __init__(self, server, sessiondir, tr_log, options):
self.server = server
self.options = options
self.sessiondir = sessiondir
self.tr_log = tr_log
self.realtime = options.realtime
self.timefactor = options.timefactor
self.quiet = options.quiet
self._loop = options.loop
self.looped_duration = options.looped_duration
self.output = options.output
self.include_non_playable = options.include_non_playable
self._leading_pause = options.leading_pause
if server.options.locate_peers:
self._peer_location = {}
for peeraddr in tr_log.peers:
self._peer_location[peeraddr] = server.ip_locator.locate(peeraddr)
self._peers_center_location_x = self._get_peers_center_location_x()
if options.pretend_audio_filename:
self._pretended_file = self._fileinfo_for_pretended_audio_file()
self._pretended_file["duration"] = self._get_file_duration(self._pretended_file)
self._pretended_files = [self._pretended_file]
self._files_to_play = self._pretended_files
else:
self._files_to_play = self.tr_log.files
self.predecode = server.options.predecode
if self.predecode:
predecoder = Predecoder(
tr_log.files, sample_rate=self.SAMPLE_RATE, location=tr_log.file_location)
predecoder.decode(server.options.force_predecode)
if options.pretend_audio_filename:
predecoder = Predecoder(
self._pretended_files, sample_rate=self.SAMPLE_RATE)
predecoder.decode(server.options.force_predecode)
if options.selected_files:
tr_log.select_files(options.selected_files)
self.playback_enabled = True
self.fast_forwarding = False
self.gui = None
self._check_which_files_are_audio()
self._player_class = WavPlayer
self.players = []
self._player_for_peer = dict()
self._prepare_playable_files()
self.stopwatch = Stopwatch()
self.playable_chunks = self._filter_playable_chunks(tr_log, tr_log.chunks)
if self.include_non_playable:
self.chunks = tr_log.chunks
self._num_selected_files = len(self.tr_log.files)
else:
self.chunks = self.playable_chunks
self._num_selected_files = self._num_playable_files
logger.debug("total num chunks: %s" % len(tr_log.chunks))
logger.debug("num playable chunks: %s" % len(self.playable_chunks))
logger.debug("num selected chunks: %s" % len(self.chunks))
self.score = self._interpret_chunks_to_score(tr_log, self.playable_chunks, options)
self.estimated_duration = self._estimated_playback_duration(self.score, options)
print "playback duration: %s" % datetime.timedelta(seconds=self.estimated_duration)
self._chunks_by_id = {}
self.segments_by_id = {}
self._playing = False
self._quitting = False
self._was_stopped = False
self.space = Space()
self._scheduler_queue = Queue.Queue()
self.scheduler = sched.scheduler(time.time, time.sleep)
self._run_scheduler_thread()
if self.output == self.SSR:
self.ssr = SsrControl()
self._warned_about_max_sources = False
def init_playback(self):
if self.server.options.no_synth:
self.synth = None
else:
from synth_controller import SynthController
self.synth = SynthController(logger)
self.synth.launch_engine(self.server.options.sc_mode)
self.synth.connect(self.synth.lang_port)
self.synth.subscribe_to_info()
if self.options.capture_audio:
self._load_sounds()
self._start_capture_audio()
self._tell_visualizers("/synth_address", self.synth.lang_port)
if self.output == self.SSR:
self.ssr.run()
if not self.options.capture_audio:
self._load_sounds()
self._log_time_for_last_handled_event = 0
if self.options.ff_to_start:
self._ff_to_time = self.options.start_time
self.set_time_cursor(0)
else:
self._ff_to_time = None
self.set_time_cursor(self.options.start_time)
def _start_capture_audio(self):
self._audio_capture_filename = self.options.capture_audio
if os.path.exists(self._audio_capture_filename):
os.remove(self._audio_capture_filename)
self._audio_capture_process = subprocess.Popen(
["./jack_capture/jack_capture", "-f", self._audio_capture_filename, "-d", "-1",
"-B", "65536",
"SuperCollider:out_1", "SuperCollider:out_2"],
shell=False,
stdout=subprocess.PIPE)
self._wait_until_audio_capture_started()
def _wait_until_audio_capture_started(self):
print "waiting for audio capture to start"
while True:
line = self._audio_capture_process.stdout.readline().rstrip("\r\n")
m = re.match('^audio capture started at (.*)$', line)
if m:
audio_capture_start_time = float(m.group(1))
self._tell_visualizers("/audio_captured_started", str(audio_capture_start_time))
print "audio capture started"
return
@classmethod
def _estimated_playback_duration(cls, score, options):
last_segment = score[-1]
return last_segment["onset"] / options.timefactor + last_segment["duration"]
@classmethod
def _interpret_chunks_to_score(cls, tr_log, chunks, options):
score = Interpreter(options.max_pause_within_segment,
options.max_segment_duration).interpret(
chunks, tr_log.files)
for segment in score:
segment["duration"] /= options.timefactor
return score
@classmethod
def _filter_playable_chunks(cls, tr_log, chunks):
return filter(lambda chunk: (cls._chunk_is_playable(tr_log, chunk)),
chunks)
@classmethod
def _chunk_is_playable(cls, tr_log, chunk):
file_info = tr_log.files[chunk["filenum"]]
return file_info["playable_file_index"] != -1
def _run_scheduler_thread(self):
self._scheduler_thread = threading.Thread(target=self._process_scheduled_events)
self._scheduler_thread.daemon = True
self._scheduler_thread.start()
def _process_scheduled_events(self):
while not self._quitting:
while True:
try:
delay, priority, action, arguments = self._scheduler_queue.get(True, 0.01)
except Queue.Empty:
break
self.scheduler.enter(delay, priority, action, arguments)
self.scheduler.run()
def _handle_visualizing_message(self, path, args, types, src, data):
segment_id = args[0]
segment = self.segments_by_id[segment_id]
logger.debug("visualizing segment %s" % segment)
player = self.get_player_for_segment(segment)
self._ask_synth_to_play_segment(segment, channel=0, pan=player.spatial_position.pan)
def _ask_synth_to_play_segment(self, segment, channel, pan):
if self.synth:
logger.debug("asking synth to play %s" % segment)
file_info = self.tr_log.files[segment["filenum"]]
if self.output == self.SSR:
segment["sound_source_id"] = self.ssr.allocate_source()
if segment["sound_source_id"] and not self._warned_about_max_sources:
channel = segment["sound_source_id"] - 1
pan = None
else:
print "WARNING: max sources exceeded, skipping segment playback (this warning will not be repeated)"
self._warned_about_max_sources = True
return
self.synth.play_segment(
segment["id"],
segment["audio_filenum"],
segment["relative_start_time_in_file"],
segment["relative_end_time_in_file"],
segment["duration"],
self.looped_duration,
channel,
pan)
self._scheduler_queue.put(
(segment["playback_duration"], 1, self.stopped_playing, [segment]))
def _check_which_files_are_audio(self):
for file_info in self.tr_log.files:
file_info["is_audio"] = self._has_audio_extension(file_info["name"])
@staticmethod
def _has_audio_extension(filename):
return Orchestra._extension(filename) in Orchestra.PLAYABLE_FORMATS
@staticmethod
def _extension(filename):
m = Orchestra._extension_re.search(filename)
if m:
return m.group(1).lower()
def _prepare_playable_files(self):
if self.predecode:
self._num_playable_files = self._get_wav_files_info(
self.tr_log, self.include_non_playable)
else:
raise Exception("playing wav without precoding is not supported")
def _load_sounds(self):
if self.synth:
print "loading sounds"
for filenum in range(len(self._files_to_play)):
file_info = self._files_to_play[filenum]
if file_info["playable_file_index"] != -1:
logger.info("load_sound(%s)" % file_info["decoded_name"])
result = self._load_sound_stubbornly(filenum, file_info["decoded_name"])
logger.info("load_sound result: %s" % result)
print "OK"
def _load_sound_stubbornly(self, filenum, filename):
while True:
result = self.synth.load_sound(filenum, filename)
if result > 0:
return result
else:
warn(logger, "synth returned %s - retrying soon" % result)
time.sleep(1.0)
@classmethod
def _get_wav_files_info(cls, tr_log, include_non_playable=False):
playable_file_index = 0
for filenum in range(len(tr_log.files)):
file_info = tr_log.files[filenum]
file_info["playable_file_index"] = -1
if "decoded_name" in file_info:
file_info["duration"] = cls._get_file_duration(file_info)
if file_info["duration"] > 0:
file_info["playable_file_index"] = playable_file_index
logger.debug("duration for %r: %r\n" %
(file_info["name"], file_info["duration"]))
playable_file_index += 1
if include_non_playable:
file_info["index"] = filenum
else:
file_info["index"] = file_info["playable_file_index"]
return playable_file_index
@classmethod
def _get_file_duration(cls, file_info):
if "decoded_name" in file_info:
statinfo = os.stat(file_info["decoded_name"])
wav_header_size = 44
return float((statinfo.st_size - wav_header_size) / cls.BYTES_PER_SAMPLE) / cls.SAMPLE_RATE
def get_current_log_time(self):
if self.fast_forwarding:
return self._log_time_for_last_handled_event
else:
return self.log_time_played_from + self.stopwatch.get_elapsed_time() * self.timefactor
def play_non_realtime(self, quit_on_end=False):
logger.info("entering play_non_realtime")
self._was_stopped = False
self._num_finished_visualizers = 0
if self._loop:
while True:
self._play_until_end()
if not self._was_stopped:
self._wait_for_visualizers_to_finish()
self.set_time_cursor(0)
else:
self._play_until_end()
if not self._was_stopped:
self._wait_for_visualizers_to_finish()
if quit_on_end:
self._quit()
logger.info("leaving play_non_realtime")
def _quit(self):
if self.options.capture_audio:
self._audio_capture_process.kill()
self._quitting = True
def _play_until_end(self):
logger.info("entering _play_until_end")
self._playing = True
self.stopwatch.start()
time.sleep(self._leading_pause)
no_more_events = False
while self._playing and not no_more_events:
event = self._get_next_chunk_or_segment()
if event:
self._handle_event(event)
else:
no_more_events = True
logger.info("leaving _play_until_end")
def _get_next_chunk_or_segment(self):
logger.debug("chunk index = %d, segment index = %d" % (
self.current_chunk_index, self.current_segment_index))
chunk = self._get_next_chunk()
segment = self._get_next_segment()
logger.debug("next chunk: %s" % chunk)
logger.debug("next segment: %s" % segment)
if chunk and segment:
return self._choose_nearest_chunk_or_segment(chunk, segment)
elif chunk:
return {"type": "chunk",
"chunk": chunk}
elif segment:
return {"type": "segment",
"segment": segment}
else:
return None
def _get_next_chunk(self):
if self.current_chunk_index < len(self.chunks):
return self.chunks[self.current_chunk_index]
def _get_next_segment(self):
if len(self.score) == 0:
return None
elif self.current_segment_index < len(self.score):
return self.score[self.current_segment_index]
def _handle_event(self, event):
if event["type"] == "chunk":
self.handle_chunk(event["chunk"])
self.current_chunk_index += 1
elif event["type"] == "segment":
self.handle_segment(event["segment"])
self.current_segment_index += 1
else:
raise Exception("unexpected event %s" % event)
def _choose_nearest_chunk_or_segment(self, chunk, segment):
if chunk["t"] < segment["onset"]:
return {"type": "chunk",
"chunk": chunk}
else:
return {"type": "segment",
"segment": segment}
def stop(self):
# stop_all disabled as it also deletes ~reverb
# if self.synth:
# self.synth.stop_all()
self._was_stopped = True
self._playing = False
self.log_time_played_from = self.get_current_log_time()
self.stopwatch.stop()
def handle_segment(self, segment):
logger.debug("handling segment %s" % segment)
player = self.get_player_for_segment(segment)
if not player:
logger.debug("get_player_for_segment returned None - skipping playback")
if self.fast_forwarding:
self._stop_ff_if_necessary()
else:
now = self.get_current_log_time()
time_margin = segment["onset"] - now
logger.debug("time_margin=%f-%f=%f" % (segment["onset"], now, time_margin))
if not self.realtime and time_margin > 0:
sleep_time = time_margin
logger.debug("sleeping %f" % sleep_time)
time.sleep(sleep_time)
if player:
logger.debug("player.enabled=%s" % player.enabled)
if player and player.enabled:
player.play(segment, pan=0.5)
self._log_time_for_last_handled_event = segment["onset"]
def handle_chunk(self, chunk):
logger.debug("handling chunk %s" % chunk)
player = self.get_player_for_chunk(chunk)
logger.debug("get_player_for_chunk returned %s" % player)
if self.fast_forwarding:
self._stop_ff_if_necessary()
else:
now = self.get_current_log_time()
time_margin = chunk["t"] - now
logger.debug("time_margin=%f-%f=%f" % (chunk["t"], now, time_margin))
if not self.realtime and time_margin > 0:
sleep_time = time_margin
logger.debug("sleeping %f" % sleep_time)
time.sleep(sleep_time)
if player:
logger.debug("player.enabled=%s" % player.enabled)
if player and player.enabled:
player.visualize(chunk)
self._log_time_for_last_handled_event = chunk["t"]
def _stop_ff_if_necessary(self):
if self._ff_to_time is not None and \
self._log_time_for_last_handled_event >= self._ff_to_time:
self._ff_to_time = None
self.fast_forwarding = False
self.set_time_cursor(self.log_time_played_from)
def highlight_segment(self, segment):
if self.gui:
self.gui.highlight_segment(segment)
def visualize_chunk(self, chunk, player):
if len(self.visualizers) > 0:
self._inform_visualizers_about_peer(player)
file_info = self.tr_log.files[chunk["filenum"]]
self._chunks_by_id[chunk["id"]] = chunk
self._tell_visualizers(
"/chunk",
chunk["id"],
chunk["begin"],
chunk["end"] - chunk["begin"],
file_info["index"],
player.id,
chunk["t"])
def visualize_segment(self, segment, player):
if len(self.visualizers) > 0:
self._inform_visualizers_about_peer(player)
file_info = self.tr_log.files[segment["filenum"]]
self.segments_by_id[segment["id"]] = segment
self._tell_visualizers(
"/segment",
segment["id"],
segment["begin"],
segment["end"] - segment["begin"],
file_info["index"],
player.id,
segment["t"],
segment["playback_duration"])
else:
self._ask_synth_to_play_segment(segment, channel=0, pan=0.5)
def stopped_playing(self, segment):
logger.debug("stopped segment %s" % segment)
if self.gui:
self.gui.unhighlight_segment(segment)
if self.output == self.SSR and segment["sound_source_id"]:
self.ssr.free_source(segment["sound_source_id"])
def play_segment(self, segment, player):
self.segments_by_id[segment["id"]] = segment
if self.looped_duration:
segment["playback_duration"] = self.looped_duration
else:
segment["playback_duration"] = segment["duration"]
self.visualize_segment(segment, player)
def _send_torrent_info_to_uninformed_visualizers(self):
for visualizer in self.visualizers:
if not visualizer.informed_about_torrent:
self._send_torrent_info_to_visualizer(visualizer)
def _inform_visualizers_about_peer(self, player):
for visualizer in self.visualizers:
if player.id not in visualizer.informed_about_peer:
if visualizer.send(
"/peer", player.id, player.addr, player.spatial_position.bearing,
player.spatial_position.pan, player.location_str):
visualizer.informed_about_peer[player.id] = True
def _send_torrent_info_to_visualizer(self, visualizer):
if not visualizer.send(
"/torrent",
self._num_selected_files,
self.tr_log.lastchunktime(),
self.tr_log.total_file_size(),
len(self.chunks),
len(self.score),
self.options.title):
return
for filenum in range(len(self.tr_log.files)):
file_info = self.tr_log.files[filenum]
if self.include_non_playable or file_info["playable_file_index"] != -1:
if not visualizer.send(
"/file",
file_info["index"],
file_info["offset"],
file_info["length"]):
return
visualizer.informed_about_torrent = True
def get_player_for_chunk(self, chunk):
try:
return chunk["player"]
except KeyError:
peer_player = self.get_player_for_peer(chunk["peeraddr"])
chunk["player"] = peer_player
return peer_player
def get_player_for_segment(self, segment):
try:
return segment["player"]
except KeyError:
peer_player = self.get_player_for_peer(segment["peeraddr"])
segment["player"] = peer_player
return peer_player
def get_player_for_peer(self, peeraddr):
peer_player = None
try:
peer_player = self._player_for_peer[peeraddr]
except KeyError:
peer_player = self._create_player(peeraddr)
self.players.append(peer_player)
self._player_for_peer[peeraddr] = peer_player
return peer_player
def _create_player(self, addr):
count = len(self.players)
logger.debug("creating player number %d" % count)
player = self._player_class(self, count)
player.addr = addr
if self.server.options.locate_peers and self._peer_location[addr] is not None:
x, y, place_name = self._peer_location[addr]
if place_name:
place_name = place_name.encode("unicode_escape")
else:
place_name = ""
player.location_str = "%s,%s,%s" % (x, y, place_name)
if x < self._peers_center_location_x:
player.spatial_position.pan = -1.0
else:
player.spatial_position.pan = 1.0
else:
player.location_str = ""
return player
def set_time_cursor(self, log_time):
assert not self.realtime
logger.debug("setting time cursor at %f" % log_time)
self.log_time_played_from = log_time
if self._playing:
self.stopwatch.restart()
self.current_chunk_index = self._get_current_chunk_index()
self.current_segment_index = self._get_current_segment_index()
def _get_current_chunk_index(self):
index = 0
next_to_last_index = len(self.chunks) - 2
while index < next_to_last_index:
if self.chunks[index+1]["t"] >= self.log_time_played_from:
return index
index += 1
return len(self.chunks) - 1
def _get_current_segment_index(self):
index = 0
next_to_last_index = len(self.score) - 2
while index < next_to_last_index:
if self.score[index+1]["onset"] >= self.log_time_played_from:
return index
index += 1
return len(self.score) - 1
def _handle_set_listener_position(self, path, args, types, src, data):
if self.output == self.SSR:
x, y = args
self.ssr.set_listener_position(x, y)
def _handle_set_listener_orientation(self, path, args, types, src, data):
if self.output == self.SSR:
orientation = args[0]
self.ssr.set_listener_orientation(orientation)
def _handle_place_segment(self, path, args, types, src, data):
segment_id, x, y, duration = args
if self.output == self.SSR:
segment = self.segments_by_id[segment_id]
sound_source_id = segment["sound_source_id"]
if sound_source_id is not None:
self.ssr.place_source(sound_source_id, x, y, duration)
else:
pan = self._spatial_position_to_stereo_pan(x, y)
if self.synth:
self.synth.pan(segment_id, pan)
def _handle_enable_smooth_movement(self, path, args, types, src, data):
pass # OBSOLETE after smooth movement made default
def _handle_start_segment_movement_from_peer(self, path, args, types, src, data):
segment_id, duration = args
if self.output == self.SSR:
segment = self.segments_by_id[segment_id]
sound_source_id = segment["sound_source_id"]
if sound_source_id is not None:
player = self.get_player_for_segment(segment)
self.ssr.start_source_movement(
sound_source_id, player.trajectory, duration)
def _spatial_position_to_stereo_pan(self, x, y):
# compare rectangular_visualizer.Visualizer.pan_segment
# NOTE: assumes default listener position and orientation!
return float(x) / 5 + 0.5
def reset(self):
if self.synth:
self.synth.stop_engine()
self._tell_visualizers("/reset")
for visualizer in self.visualizers:
visualizer.informed_about_torrent = False
visualizer.informed_about_peer = {}
def _tell_visualizers(self, *args):
self._send_torrent_info_to_uninformed_visualizers()
self.server._tell_visualizers(*args)
def _fileinfo_for_pretended_audio_file(self):
return {"offset": 0,
"length": os.stat(self.options.pretend_audio_filename).st_size,
"name": self.options.pretend_audio_filename,
"playable_file_index": 0}
def _handle_finished(self, path, args, types, src, data):
self._num_finished_visualizers += 1
def _wait_for_visualizers_to_finish(self):
while self._num_finished_visualizers < len(self.visualizers):
time.sleep(0.1)
def _get_peers_center_location_x(self):
if len(self._peer_location) <= 1:
return 0
else:
sorted_xs = sorted([x for x,y,location_str in self._peer_location.values()])
center_index = int((len(self._peer_location)-1) / 2)
return float(sorted_xs[center_index] + sorted_xs[center_index+1]) / 2