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Commit | Line | Data |
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be27763f IB |
1 | import threading |
2 | import pydub | |
98ff4305 | 3 | import time |
60979de4 | 4 | from transitions.extensions import HierarchicalMachine as Machine |
be27763f | 5 | |
29597680 IB |
6 | import os.path |
7 | ||
ccda4cb9 IB |
8 | import audioop |
9 | ||
29597680 | 10 | from .lock import Lock |
a24c34bc | 11 | from . import Config, gain, debug_print, error_print |
af27d782 | 12 | from .mixer import Mixer |
aee1334c | 13 | from .music_effect import GainEffect |
1b4b78f5 | 14 | |
29597680 IB |
15 | file_lock = Lock("file") |
16 | ||
108f858f | 17 | class MusicFile: |
2e404903 | 18 | def __init__(self, filename, mapping, name=None, gain=1): |
60979de4 IB |
19 | states = [ |
20 | 'initial', | |
21 | 'loading', | |
22 | 'failed', | |
2e404903 IB |
23 | { |
24 | 'name': 'loaded', | |
108f858f IB |
25 | 'children': [ |
26 | 'stopped', | |
27 | 'playing', | |
28 | 'paused', | |
29 | 'stopping', | |
30 | 'stopped' | |
31 | ] | |
2e404903 | 32 | } |
60979de4 IB |
33 | ] |
34 | transitions = [ | |
2e404903 IB |
35 | { |
36 | 'trigger': 'load', | |
37 | 'source': 'initial', | |
38 | 'dest': 'loading' | |
39 | }, | |
40 | { | |
41 | 'trigger': 'fail', | |
42 | 'source': 'loading', | |
43 | 'dest': 'failed' | |
44 | }, | |
45 | { | |
46 | 'trigger': 'success', | |
47 | 'source': 'loading', | |
48 | 'dest': 'loaded_stopped' | |
49 | }, | |
50 | { | |
51 | 'trigger': 'start_playing', | |
52 | 'source': 'loaded_stopped', | |
53 | 'dest': 'loaded_playing' | |
54 | }, | |
55 | { | |
56 | 'trigger': 'pause', | |
57 | 'source': 'loaded_playing', | |
58 | 'dest': 'loaded_paused' | |
59 | }, | |
60 | { | |
61 | 'trigger': 'unpause', | |
62 | 'source': 'loaded_paused', | |
63 | 'dest': 'loaded_playing' | |
64 | }, | |
65 | { | |
66 | 'trigger': 'stop_playing', | |
67 | 'source': ['loaded_playing','loaded_paused'], | |
68 | 'dest': 'loaded_stopping' | |
69 | }, | |
70 | { | |
71 | 'trigger': 'stopped', | |
72 | 'source': 'loaded_stopping', | |
73 | 'dest': 'loaded_stopped', | |
74 | 'after': 'trigger_stopped_events' | |
75 | } | |
60979de4 IB |
76 | ] |
77 | ||
108f858f | 78 | Machine(model=self, states=states, |
51322669 IB |
79 | transitions=transitions, initial='initial', |
80 | ignore_invalid_triggers=True) | |
60979de4 | 81 | |
1b4b78f5 IB |
82 | self.volume = 100 |
83 | self.mapping = mapping | |
be27763f | 84 | self.filename = filename |
9de92b6d | 85 | self.name = name or filename |
29597680 | 86 | self.audio_segment = None |
ccc8b4f2 | 87 | self.audio_segment_frame_width = 0 |
ccda4cb9 | 88 | self.initial_volume_factor = gain |
29597680 | 89 | self.music_lock = Lock("music__" + filename) |
0deb82a5 | 90 | self.wait_event = threading.Event() |
ccda4cb9 | 91 | self.db_gain = 0 |
aee1334c | 92 | self.gain_effects = [] |
be27763f | 93 | |
2e404903 | 94 | threading.Thread(name="MSMusicLoad", target=self.load).start() |
29597680 IB |
95 | |
96 | def on_enter_loading(self): | |
97 | with file_lock: | |
98 | try: | |
a24c34bc IB |
99 | debug_print("Loading « {} »".format(self.name)) |
100 | self.mixer = self.mapping.mixer or Mixer() | |
ccda4cb9 | 101 | initial_db_gain = gain(self.initial_volume_factor * 100) |
2e404903 IB |
102 | self.audio_segment = pydub.AudioSegment \ |
103 | .from_file(self.filename) \ | |
104 | .set_frame_rate(Config.frame_rate) \ | |
105 | .set_channels(Config.channels) \ | |
106 | .set_sample_width(Config.sample_width) \ | |
107 | .apply_gain(initial_db_gain) | |
ccc8b4f2 | 108 | self.audio_segment_frame_width = self.audio_segment.frame_width |
29597680 IB |
109 | self.sound_duration = self.audio_segment.duration_seconds |
110 | except Exception as e: | |
a24c34bc | 111 | error_print("failed to load « {} »: {}".format(self.name, e)) |
29597680 IB |
112 | self.loading_error = e |
113 | self.fail() | |
114 | else: | |
115 | self.success() | |
a24c34bc | 116 | debug_print("Loaded « {} »".format(self.name)) |
60979de4 IB |
117 | |
118 | def check_is_loaded(self): | |
119 | return self.state.startswith('loaded_') | |
be27763f | 120 | |
29597680 IB |
121 | def is_not_stopped(self): |
122 | return self.check_is_loaded() and not self.is_loaded_stopped() | |
0e5d59f7 | 123 | |
9de92b6d | 124 | def is_paused(self): |
29597680 | 125 | return self.is_loaded_paused() |
9de92b6d | 126 | |
98ff4305 IB |
127 | @property |
128 | def sound_position(self): | |
29597680 IB |
129 | if self.is_not_stopped(): |
130 | return self.current_frame / self.current_audio_segment.frame_rate | |
98ff4305 IB |
131 | else: |
132 | return 0 | |
133 | ||
2e404903 | 134 | def play(self, fade_in=0, volume=100, loop=0, start_at=0): |
9925ce3b IB |
135 | # FIXME: create a "reinitialize" method |
136 | self.gain_effects = [] | |
b37c72a2 | 137 | self.set_gain(gain(volume) + self.mapping.master_gain, absolute=True) |
1b4b78f5 | 138 | self.volume = volume |
1e44fe7e | 139 | self.current_loop = 0 |
0cb786e3 IB |
140 | if loop < 0: |
141 | self.last_loop = float('inf') | |
142 | else: | |
143 | self.last_loop = loop | |
1b4b78f5 | 144 | |
29597680 | 145 | with self.music_lock: |
ccda4cb9 | 146 | self.current_audio_segment = self.audio_segment |
ccc8b4f2 | 147 | self.current_frame = int(start_at * self.audio_segment.frame_rate) |
1e44fe7e IB |
148 | if fade_in > 0: |
149 | db_gain = gain(self.volume, 0)[0] | |
150 | self.set_gain(-db_gain) | |
151 | self.gain_effects.append(GainEffect( | |
152 | "fade", | |
153 | self.current_audio_segment, | |
154 | self.current_loop, | |
155 | self.sound_position, | |
156 | self.sound_position + fade_in, | |
157 | gain=db_gain)) | |
ccc8b4f2 | 158 | |
29597680 IB |
159 | self.start_playing() |
160 | ||
29597680 | 161 | def on_enter_loaded_playing(self): |
af27d782 | 162 | self.mixer.add_file(self) |
29597680 IB |
163 | |
164 | def finished_callback(self): | |
165 | if self.is_loaded_playing(): | |
166 | self.stop_playing() | |
167 | if self.is_loaded_stopping(): | |
168 | self.stopped() | |
169 | ||
22514f3a | 170 | def trigger_stopped_events(self): |
af27d782 | 171 | self.mixer.remove_file(self) |
0deb82a5 IB |
172 | self.wait_event.set() |
173 | ||
22514f3a IB |
174 | def play_callback(self, out_data_length, frame_count): |
175 | if self.is_loaded_paused(): | |
176 | return b'\0' * out_data_length | |
177 | ||
29597680 | 178 | with self.music_lock: |
ccc8b4f2 IB |
179 | [data, nb_frames] = self.get_next_sample(frame_count) |
180 | if nb_frames < frame_count: | |
0cb786e3 IB |
181 | if self.is_loaded_playing() and\ |
182 | self.current_loop < self.last_loop: | |
1e44fe7e | 183 | self.current_loop += 1 |
ccc8b4f2 | 184 | self.current_frame = 0 |
2e404903 IB |
185 | [new_data, new_nb_frames] = self.get_next_sample( |
186 | frame_count - nb_frames) | |
ccc8b4f2 IB |
187 | data += new_data |
188 | nb_frames += new_nb_frames | |
189 | elif nb_frames == 0: | |
9925ce3b | 190 | # FIXME: too slow when mixing multiple streams |
2e404903 IB |
191 | threading.Thread( |
192 | name="MSFinishedCallback", | |
193 | target=self.finished_callback).start() | |
29597680 | 194 | |
22514f3a | 195 | return data.ljust(out_data_length, b'\0') |
ccc8b4f2 IB |
196 | |
197 | def get_next_sample(self, frame_count): | |
198 | fw = self.audio_segment_frame_width | |
199 | ||
200 | data = b"" | |
201 | nb_frames = 0 | |
ccc8b4f2 IB |
202 | |
203 | segment = self.current_audio_segment | |
204 | max_val = int(segment.frame_count()) | |
205 | ||
206 | start_i = max(self.current_frame, 0) | |
207 | end_i = min(self.current_frame + frame_count, max_val) | |
2e404903 | 208 | data += segment._data[start_i*fw : end_i*fw] |
ccc8b4f2 IB |
209 | nb_frames += end_i - start_i |
210 | self.current_frame += end_i - start_i | |
211 | ||
aee1334c IB |
212 | volume_factor = self.volume_factor(self.effects_next_gain(nb_frames)) |
213 | ||
214 | data = audioop.mul(data, Config.sample_width, volume_factor) | |
ccda4cb9 | 215 | |
ccc8b4f2 | 216 | return [data, nb_frames] |
be27763f | 217 | |
2e404903 | 218 | def seek(self, value=0, delta=False): |
52d58baf IB |
219 | # We don't want to do that while stopping |
220 | if not (self.is_loaded_playing() or self.is_loaded_paused()): | |
221 | return | |
222 | with self.music_lock: | |
aee1334c | 223 | self.abandon_all_effects() |
9925ce3b IB |
224 | if delta: |
225 | frame_count = int(self.audio_segment.frame_count()) | |
226 | frame_diff = int(value * self.audio_segment.frame_rate) | |
227 | self.current_frame += frame_diff | |
228 | while self.current_frame < 0: | |
229 | self.current_loop -= 1 | |
230 | self.current_frame += frame_count | |
231 | while self.current_frame > frame_count: | |
232 | self.current_loop += 1 | |
233 | self.current_frame -= frame_count | |
234 | if self.current_loop < 0: | |
235 | self.current_loop = 0 | |
236 | self.current_frame = 0 | |
237 | if self.current_loop > self.last_loop: | |
238 | self.current_loop = self.last_loop | |
239 | self.current_frame = frame_count | |
240 | else: | |
241 | self.current_frame = max( | |
242 | 0, | |
243 | int(value * self.audio_segment.frame_rate)) | |
52d58baf | 244 | |
aee1334c IB |
245 | def effects_next_gain(self, frame_count): |
246 | db_gain = 0 | |
247 | for gain_effect in self.gain_effects: | |
248 | [new_gain, last_gain] = gain_effect.get_next_gain( | |
249 | self.current_frame, | |
1e44fe7e | 250 | self.current_loop, |
aee1334c IB |
251 | frame_count) |
252 | if last_gain: | |
253 | self.set_gain(new_gain) | |
254 | self.gain_effects.remove(gain_effect) | |
255 | else: | |
256 | db_gain += new_gain | |
257 | return db_gain | |
258 | ||
259 | ||
260 | def abandon_all_effects(self): | |
261 | db_gain = 0 | |
262 | for gain_effect in self.gain_effects: | |
263 | db_gain += gain_effect.get_last_gain() | |
264 | ||
265 | self.gain_effects = [] | |
266 | self.set_gain(db_gain) | |
267 | ||
3aaddc9d | 268 | def stop(self, fade_out=0, wait=False, set_wait_id=None): |
29597680 IB |
269 | if self.is_loaded_playing(): |
270 | ms = int(self.sound_position * 1000) | |
271 | ms_fo = max(1, int(fade_out * 1000)) | |
272 | ||
2e404903 IB |
273 | new_audio_segment = self.current_audio_segment[: ms+ms_fo] \ |
274 | .fade_out(ms_fo) | |
29597680 | 275 | with self.music_lock: |
22514f3a IB |
276 | self.current_audio_segment = new_audio_segment |
277 | self.stop_playing() | |
1b4b78f5 | 278 | if wait: |
3aaddc9d IB |
279 | if set_wait_id is not None: |
280 | self.mapping.add_wait_id(set_wait_id, self.wait_event) | |
1b4b78f5 | 281 | self.wait_end() |
0e5d59f7 | 282 | else: |
29597680 IB |
283 | self.stop_playing() |
284 | self.stopped() | |
0e5d59f7 | 285 | |
aee1334c IB |
286 | def volume_factor(self, additional_gain): |
287 | return 10 ** ( (self.db_gain + additional_gain) / 20) | |
288 | ||
b37c72a2 IB |
289 | def set_gain(self, db_gain, absolute=False): |
290 | if absolute: | |
291 | self.db_gain = db_gain | |
292 | else: | |
293 | self.db_gain += db_gain | |
29597680 | 294 | |
aee1334c | 295 | def set_volume(self, value, delta=False, fade=0): |
2e404903 IB |
296 | [db_gain, self.volume] = gain( |
297 | value + int(delta) * self.volume, | |
298 | self.volume) | |
1b4b78f5 | 299 | |
55e4cf35 IB |
300 | if not (self.is_loaded_playing() or self.is_loaded_paused()): |
301 | return | |
302 | ||
aee1334c IB |
303 | if fade > 0: |
304 | self.gain_effects.append(GainEffect( | |
305 | "fade", | |
306 | self.current_audio_segment, | |
1e44fe7e | 307 | self.current_loop, |
aee1334c IB |
308 | self.sound_position, |
309 | self.sound_position + fade, | |
310 | gain=db_gain)) | |
311 | else: | |
312 | self.set_gain(db_gain) | |
be27763f | 313 | |
b86db9f1 | 314 | def wait_end(self): |
0deb82a5 IB |
315 | self.wait_event.clear() |
316 | self.wait_event.wait() | |
d479af33 | 317 |