X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=helpers%2Fmusic_file.py;h=54a3fdcbb65614187f5ff5c75b399bbbca239944;hb=2e4049036ec4d90a9daeff606d821d2ac2d023ce;hp=ebe458beb595aefc0d9ac2c9f5d0de2f35f985e5;hpb=052071a37a17ebcedc3e58cd4c353688727116f8;p=perso%2FImmae%2FProjets%2FPython%2FMusicSampler.git diff --git a/helpers/music_file.py b/helpers/music_file.py index ebe458b..54a3fdc 100644 --- a/helpers/music_file.py +++ b/helpers/music_file.py @@ -3,63 +3,108 @@ import pydub 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") class MusicFile(Machine): - def __init__(self, filename, mapping, name = None, gain = 1): + def __init__(self, filename, mapping, name=None, gain=1): states = [ 'initial', 'loading', 'failed', - { 'name': 'loaded', 'children': ['stopped', 'playing', 'paused', 'stopping'] } + { + 'name': 'loaded', + 'children': ['stopped', 'playing', 'paused', 'stopping'] + } ] transitions = [ - { 'trigger': 'load', 'source': 'initial', 'dest': 'loading'}, - { 'trigger': 'fail', 'source': 'loading', 'dest': 'failed'}, - { 'trigger': 'success', 'source': 'loading', 'dest': 'loaded_stopped'}, - { 'trigger': 'start_playing', 'source': 'loaded_stopped', 'dest': 'loaded_playing'}, - { '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': 'load', + 'source': 'initial', + 'dest': 'loading' + }, + { + 'trigger': 'fail', + 'source': 'loading', + 'dest': 'failed' + }, + { + 'trigger': 'success', + 'source': 'loading', + 'dest': 'loaded_stopped' + }, + { + 'trigger': 'start_playing', + 'source': 'loaded_stopped', + 'dest': 'loaded_playing' + }, + { + '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', + 'after': 'trigger_stopped_events' + } ] - Machine.__init__(self, states=states, transitions=transitions, initial='initial') + 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() + 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_') @@ -77,43 +122,29 @@ class MusicFile(Machine): else: return 0 - def play(self, fade_in = 0, volume = 100, loop = 0, start_at = 0): - db_gain = gain(volume) + self.mapping.master_gain + def play(self, fade_in=0, volume=100, loop=0, start_at=0): + 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? - self.a_s_with_effect = self.current_audio_segment[ms:ms+ms_fi].fade_in(ms_fi) + self.a_s_with_effect = self \ + .current_audio_segment[ms : ms+ms_fi] \ + .fade_in(ms_fi) self.current_frame_with_effect = 0 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(): @@ -121,23 +152,31 @@ class MusicFile(Machine): 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: if self.is_loaded_playing() and self.loop != 0: self.loop -= 1 self.current_frame = 0 - [new_data, new_nb_frames] = self.get_next_sample(frame_count - nb_frames) + [new_data, new_nb_frames] = self.get_next_sample( + frame_count - nb_frames) 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 @@ -149,11 +188,13 @@ class MusicFile(Machine): max_val = int(segment.frame_count()) start_i = max(self.current_frame_with_effect, 0) - end_i = min(self.current_frame_with_effect + frame_count, max_val) + end_i = min(self.current_frame_with_effect + frame_count, max_val) - data += segment._data[(start_i * fw):(end_i * fw)] + data += segment._data[start_i*fw : end_i*fw] - frame_count = max(0, self.current_frame_with_effect + frame_count - max_val) + frame_count = max( + 0, + self.current_frame_with_effect + frame_count - max_val) self.current_frame_with_effect += end_i - start_i self.current_frame += end_i - start_i @@ -167,31 +208,36 @@ class MusicFile(Machine): start_i = max(self.current_frame, 0) end_i = min(self.current_frame + frame_count, max_val) - data += segment._data[(start_i * fw):(end_i * fw)] + data += segment._data[start_i*fw : end_i*fw] 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): + def seek(self, value=0, delta=False): # We don't want to do that while stopping if not (self.is_loaded_playing() or self.is_loaded_paused()): return with self.music_lock: self.a_s_with_effect = None - self.current_frame = max(0, int(delta) * self.current_frame + int(value * self.audio_segment.frame_rate)) + self.current_frame = max( + 0, + int(delta) * self.current_frame + + int(value * self.audio_segment.frame_rate)) # FIXME: si on fait un seek + delta, adapter le "loop" - def stop(self, fade_out = 0, wait = False): + def stop(self, fade_out=0, wait=False): if self.is_loaded_playing(): 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: @@ -199,21 +245,13 @@ class MusicFile(Machine): self.stopped() def set_gain(self, db_gain): - if not self.is_not_stopped(): - return + self.db_gain += db_gain + self.volume_factor = 10 ** (self.db_gain / 20) - 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 - - def set_volume(self, value, delta = False): - [db_gain, self.volume] = gain(value + int(delta) * self.volume, self.volume) + def set_volume(self, value, delta=False): + [db_gain, self.volume] = gain( + value + int(delta) * self.volume, + self.volume) self.set_gain(db_gain) @@ -221,13 +259,3 @@ class MusicFile(Machine): 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