import time
from transitions.extensions import HierarchicalMachine as Machine
-import sounddevice as sd
import os.path
+import audioop
+
from .lock import Lock
-from . import gain
+from . import Config, gain, debug_print, error_print
+from .mixer import Mixer
file_lock = Lock("file")
{ 'trigger': 'pause', 'source': 'loaded_playing', 'dest': 'loaded_paused'},
{ 'trigger': 'unpause', 'source': 'loaded_paused', 'dest': 'loaded_playing'},
{ 'trigger': 'stop_playing', 'source': ['loaded_playing','loaded_paused'], 'dest': 'loaded_stopping'},
- { 'trigger': 'stopped', 'source': 'loaded_stopping', 'dest': 'loaded_stopped'}
+ { 'trigger': 'stopped', 'source': 'loaded_stopping', 'dest': 'loaded_stopped', 'after': 'trigger_stopped_events'}
]
Machine.__init__(self, states=states, transitions=transitions, initial='initial')
self.volume = 100
self.mapping = mapping
self.filename = filename
- self.stream = None
self.name = name or filename
self.audio_segment = None
self.audio_segment_frame_width = 0
- self.volume_factor = gain
+ self.initial_volume_factor = gain
self.music_lock = Lock("music__" + filename)
self.wait_event = threading.Event()
+ self.db_gain = 0
threading.Thread(name = "MSMusicLoad", target = self.load).start()
def on_enter_loading(self):
with file_lock:
try:
- print("Loading « {} »".format(self.name))
- db_gain = gain(self.volume_factor * 100)
- self.audio_segment = pydub.AudioSegment.from_file(self.filename).set_frame_rate(44100).apply_gain(db_gain)
+ debug_print("Loading « {} »".format(self.name))
+ self.mixer = self.mapping.mixer or Mixer()
+ initial_db_gain = gain(self.initial_volume_factor * 100)
+ self.audio_segment = pydub.AudioSegment.from_file(self.filename).set_frame_rate(Config.frame_rate).set_channels(Config.channels).set_sample_width(Config.sample_width).apply_gain(initial_db_gain)
self.audio_segment_frame_width = self.audio_segment.frame_width
self.sound_duration = self.audio_segment.duration_seconds
except Exception as e:
- print("failed to load « {} »: {}".format(self.name, e))
+ error_print("failed to load « {} »: {}".format(self.name, e))
self.loading_error = e
self.fail()
else:
self.success()
- print("Loaded « {} »".format(self.name))
+ debug_print("Loaded « {} »".format(self.name))
def check_is_loaded(self):
return self.state.startswith('loaded_')
return 0
def play(self, fade_in = 0, volume = 100, loop = 0, start_at = 0):
- db_gain = gain(volume) + self.mapping.master_gain
+ self.db_gain = gain(volume) + self.mapping.master_gain
self.volume = volume
self.loop = loop
ms = int(start_at * 1000)
ms_fi = int(fade_in * 1000)
with self.music_lock:
- self.current_audio_segment = (self.audio_segment + db_gain)
+ self.current_audio_segment = self.audio_segment
self.current_frame = int(start_at * self.audio_segment.frame_rate)
if ms_fi > 0:
# FIXME: apply it to repeated when looping?
else:
self.a_s_with_effect = None
- self.before_loaded_playing()
self.start_playing()
- def before_loaded_playing(self):
- with self.music_lock:
- segment = self.current_audio_segment
-
- self.stream = sd.RawOutputStream(samplerate=segment.frame_rate,
- channels=segment.channels,
- dtype='int' + str(8*segment.sample_width), # FIXME: ?
- latency=1.,
- callback=self.play_callback,
- finished_callback=self.finished_callback
- )
-
def on_enter_loaded_playing(self):
- self.stream.start()
-
- def on_enter_loaded_paused(self):
- self.stream.stop()
+ self.mixer.add_file(self)
def finished_callback(self):
if self.is_loaded_playing():
if self.is_loaded_stopping():
self.stopped()
- def on_enter_loaded_stopped(self):
+ def trigger_stopped_events(self):
+ self.mixer.remove_file(self)
self.wait_event.set()
- def play_callback(self, out_data, frame_count, time_info, status_flags):
+ def play_callback(self, out_data_length, frame_count):
+ if self.is_loaded_paused():
+ return b'\0' * out_data_length
+
with self.music_lock:
[data, nb_frames] = self.get_next_sample(frame_count)
if nb_frames < frame_count:
data += new_data
nb_frames += new_nb_frames
elif nb_frames == 0:
- raise sd.CallbackStop
+ # FIXME: too slow
+ threading.Thread(name = "MSFinishedCallback", target=self.finished_callback).start()
- out_data[:] = data.ljust(len(out_data), b'\0')
+ return data.ljust(out_data_length, b'\0')
def get_next_sample(self, frame_count):
fw = self.audio_segment_frame_width
nb_frames += end_i - start_i
self.current_frame += end_i - start_i
+ data = audioop.mul(data, Config.sample_width, self.volume_factor)
+
return [data, nb_frames]
def seek(self, value = 0, delta = False):
ms = int(self.sound_position * 1000)
ms_fo = max(1, int(fade_out * 1000))
- # FIXME: stop fade_out puis seek -5 -> on abandonne le fade ? (cf
- # commentaire dans fonction seek
+ new_audio_segment = self.current_audio_segment[:ms + ms_fo].fade_out(ms_fo)
with self.music_lock:
- self.current_audio_segment = self.current_audio_segment[:ms + ms_fo].fade_out(ms_fo)
- self.stop_playing()
+ self.current_audio_segment = new_audio_segment
+ self.stop_playing()
if wait:
self.wait_end()
else:
self.stopped()
def set_gain(self, db_gain):
- if not self.is_not_stopped():
- return
-
- new_audio_segment = self.current_audio_segment + db_gain
-
- new_a_s_with_effect = None
- if self.a_s_with_effect is not None:
- new_a_s_with_effect = self.a_s_with_effect + db_gain
-
- with self.music_lock:
- self.current_audio_segment = new_audio_segment
- self.a_s_with_effect = new_a_s_with_effect
+ self.db_gain += db_gain
+ self.volume_factor = 10 ** (self.db_gain / 20)
def set_volume(self, value, delta = False):
[db_gain, self.volume] = gain(value + int(delta) * self.volume, self.volume)
self.wait_event.clear()
self.wait_event.wait()
-# Add some more functions to AudioSegments
-def get_sample_slice_data(self, start_sample=0, end_sample=float('inf')):
- max_val = int(self.frame_count())
-
- start_i = max(start_sample, 0) * self.frame_width
- end_i = min(end_sample, max_val) * self.frame_width
-
- return self._data[start_i:end_i]
-
-pydub.AudioSegment.get_sample_slice_data = get_sample_slice_data
projects / perso / Immae / Projets / Python / MusicSampler.git / blobdiff