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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 pyaudio as pa |
7 | import sounddevice as sd | |
8 | import os.path | |
9 | ||
10 | from .lock import Lock | |
1b4b78f5 IB |
11 | from . import gain |
12 | ||
29597680 IB |
13 | file_lock = Lock("file") |
14 | ||
15 | pyaudio = pa.PyAudio() | |
16 | ||
60979de4 | 17 | class MusicFile(Machine): |
1b4b78f5 | 18 | def __init__(self, filename, mapping, name = None, gain = 1): |
60979de4 IB |
19 | states = [ |
20 | 'initial', | |
21 | 'loading', | |
22 | 'failed', | |
29597680 | 23 | { 'name': 'loaded', 'children': ['stopped', 'playing', 'paused', 'stopping'] } |
60979de4 IB |
24 | ] |
25 | transitions = [ | |
26 | { 'trigger': 'load', 'source': 'initial', 'dest': 'loading'}, | |
27 | { 'trigger': 'fail', 'source': 'loading', 'dest': 'failed'}, | |
28 | { 'trigger': 'success', 'source': 'loading', 'dest': 'loaded_stopped'}, | |
29597680 IB |
29 | { 'trigger': 'start_playing', 'source': 'loaded_stopped', 'dest': 'loaded_playing'}, |
30 | { 'trigger': 'pause', 'source': 'loaded_playing', 'dest': 'loaded_paused'}, | |
31 | { 'trigger': 'unpause', 'source': 'loaded_paused', 'dest': 'loaded_playing'}, | |
32 | { 'trigger': 'stop_playing', 'source': ['loaded_playing','loaded_paused'], 'dest': 'loaded_stopping'}, | |
33 | { 'trigger': 'stopped', 'source': 'loaded_stopping', 'dest': 'loaded_stopped'} | |
60979de4 IB |
34 | ] |
35 | ||
36 | Machine.__init__(self, states=states, transitions=transitions, initial='initial') | |
37 | ||
1b4b78f5 IB |
38 | self.volume = 100 |
39 | self.mapping = mapping | |
be27763f | 40 | self.filename = filename |
29597680 | 41 | self.stream = None |
9de92b6d | 42 | self.name = name or filename |
29597680 | 43 | self.audio_segment = None |
ccc8b4f2 | 44 | self.audio_segment_frame_width = 0 |
1b4b78f5 | 45 | self.volume_factor = gain |
29597680 | 46 | self.music_lock = Lock("music__" + filename) |
0deb82a5 | 47 | self.wait_event = threading.Event() |
be27763f | 48 | |
29597680 IB |
49 | threading.Thread(name = "MSMusicLoad", target = self.load).start() |
50 | ||
51 | def on_enter_loading(self): | |
52 | with file_lock: | |
53 | try: | |
54 | print("Loading « {} »".format(self.name)) | |
1b4b78f5 IB |
55 | db_gain = gain(self.volume_factor * 100) |
56 | self.audio_segment = pydub.AudioSegment.from_file(self.filename).set_frame_rate(44100).apply_gain(db_gain) | |
ccc8b4f2 | 57 | self.audio_segment_frame_width = self.audio_segment.frame_width |
29597680 IB |
58 | self.sound_duration = self.audio_segment.duration_seconds |
59 | except Exception as e: | |
60 | print("failed to load « {} »: {}".format(self.name, e)) | |
61 | self.loading_error = e | |
62 | self.fail() | |
63 | else: | |
64 | self.success() | |
65 | print("Loaded « {} »".format(self.name)) | |
60979de4 IB |
66 | |
67 | def check_is_loaded(self): | |
68 | return self.state.startswith('loaded_') | |
be27763f | 69 | |
29597680 IB |
70 | def is_not_stopped(self): |
71 | return self.check_is_loaded() and not self.is_loaded_stopped() | |
0e5d59f7 | 72 | |
9de92b6d | 73 | def is_paused(self): |
29597680 | 74 | return self.is_loaded_paused() |
9de92b6d | 75 | |
98ff4305 IB |
76 | @property |
77 | def sound_position(self): | |
29597680 IB |
78 | if self.is_not_stopped(): |
79 | return self.current_frame / self.current_audio_segment.frame_rate | |
98ff4305 IB |
80 | else: |
81 | return 0 | |
82 | ||
6f4944c1 | 83 | def play(self, fade_in = 0, volume = 100, loop = 0, start_at = 0): |
1b4b78f5 IB |
84 | db_gain = gain(volume) + self.mapping.master_gain |
85 | self.volume = volume | |
6f4944c1 | 86 | self.loop = loop |
1b4b78f5 | 87 | |
29597680 | 88 | ms = int(start_at * 1000) |
ccc8b4f2 | 89 | ms_fi = int(fade_in * 1000) |
29597680 | 90 | with self.music_lock: |
ccc8b4f2 IB |
91 | self.current_audio_segment = (self.audio_segment + db_gain) |
92 | self.current_frame = int(start_at * self.audio_segment.frame_rate) | |
93 | if ms_fi > 0: | |
94 | # FIXME: apply it to repeated when looping? | |
95 | self.a_s_with_effect = self.current_audio_segment[ms:ms+ms_fi].fade_in(ms_fi) | |
96 | self.current_frame_with_effect = 0 | |
97 | else: | |
98 | self.a_s_with_effect = None | |
99 | ||
6f4944c1 | 100 | self.before_loaded_playing() |
29597680 IB |
101 | self.start_playing() |
102 | ||
6f4944c1 | 103 | def before_loaded_playing(self): |
29597680 IB |
104 | with self.music_lock: |
105 | segment = self.current_audio_segment | |
106 | ||
107 | self.stream = sd.RawOutputStream(samplerate=segment.frame_rate, | |
108 | channels=segment.channels, | |
109 | dtype='int' + str(8*segment.sample_width), # FIXME: ? | |
110 | latency=1., | |
111 | callback=self.play_callback, | |
112 | finished_callback=self.finished_callback | |
113 | ) | |
114 | ||
115 | def on_enter_loaded_playing(self): | |
116 | self.stream.start() | |
117 | ||
118 | def on_enter_loaded_paused(self): | |
119 | self.stream.stop() | |
120 | ||
121 | def finished_callback(self): | |
122 | if self.is_loaded_playing(): | |
123 | self.stop_playing() | |
124 | if self.is_loaded_stopping(): | |
125 | self.stopped() | |
126 | ||
0deb82a5 IB |
127 | def on_enter_loaded_stopped(self): |
128 | self.wait_event.set() | |
129 | ||
29597680 IB |
130 | def play_callback(self, out_data, frame_count, time_info, status_flags): |
131 | with self.music_lock: | |
ccc8b4f2 IB |
132 | [data, nb_frames] = self.get_next_sample(frame_count) |
133 | if nb_frames < frame_count: | |
6f4944c1 IB |
134 | if self.is_loaded_playing() and self.loop != 0: |
135 | self.loop -= 1 | |
ccc8b4f2 IB |
136 | self.current_frame = 0 |
137 | [new_data, new_nb_frames] = self.get_next_sample(frame_count - nb_frames) | |
138 | data += new_data | |
139 | nb_frames += new_nb_frames | |
140 | elif nb_frames == 0: | |
6f4944c1 | 141 | raise sd.CallbackStop |
29597680 | 142 | |
ccc8b4f2 IB |
143 | out_data[:] = data.ljust(len(out_data), b'\0') |
144 | ||
145 | def get_next_sample(self, frame_count): | |
146 | fw = self.audio_segment_frame_width | |
147 | ||
148 | data = b"" | |
149 | nb_frames = 0 | |
150 | if self.a_s_with_effect is not None: | |
151 | segment = self.a_s_with_effect | |
152 | max_val = int(segment.frame_count()) | |
153 | ||
154 | start_i = max(self.current_frame_with_effect, 0) | |
155 | end_i = min(self.current_frame_with_effect + frame_count, max_val) | |
156 | ||
157 | data += segment._data[(start_i * fw):(end_i * fw)] | |
158 | ||
159 | frame_count = max(0, self.current_frame_with_effect + frame_count - max_val) | |
160 | ||
161 | self.current_frame_with_effect += end_i - start_i | |
162 | self.current_frame += end_i - start_i | |
163 | nb_frames += end_i - start_i | |
164 | ||
165 | if frame_count > 0: | |
166 | self.a_s_with_effect = None | |
167 | ||
168 | segment = self.current_audio_segment | |
169 | max_val = int(segment.frame_count()) | |
170 | ||
171 | start_i = max(self.current_frame, 0) | |
172 | end_i = min(self.current_frame + frame_count, max_val) | |
173 | data += segment._data[(start_i * fw):(end_i * fw)] | |
174 | nb_frames += end_i - start_i | |
175 | self.current_frame += end_i - start_i | |
176 | ||
177 | return [data, nb_frames] | |
be27763f | 178 | |
52d58baf IB |
179 | def seek(self, value = 0, delta = False): |
180 | # We don't want to do that while stopping | |
181 | if not (self.is_loaded_playing() or self.is_loaded_paused()): | |
182 | return | |
183 | with self.music_lock: | |
ccc8b4f2 | 184 | self.a_s_with_effect = None |
52d58baf | 185 | self.current_frame = max(0, int(delta) * self.current_frame + int(value * self.audio_segment.frame_rate)) |
ccc8b4f2 | 186 | # FIXME: si on fait un seek + delta, adapter le "loop" |
52d58baf | 187 | |
1b4b78f5 | 188 | def stop(self, fade_out = 0, wait = False): |
29597680 IB |
189 | if self.is_loaded_playing(): |
190 | ms = int(self.sound_position * 1000) | |
191 | ms_fo = max(1, int(fade_out * 1000)) | |
192 | ||
ccc8b4f2 IB |
193 | # FIXME: stop fade_out puis seek -5 -> on abandonne le fade ? (cf |
194 | # commentaire dans fonction seek | |
29597680 IB |
195 | with self.music_lock: |
196 | self.current_audio_segment = self.current_audio_segment[:ms + ms_fo].fade_out(ms_fo) | |
197 | self.stop_playing() | |
1b4b78f5 IB |
198 | if wait: |
199 | self.wait_end() | |
0e5d59f7 | 200 | else: |
29597680 IB |
201 | self.stop_playing() |
202 | self.stopped() | |
0e5d59f7 | 203 | |
1b4b78f5 IB |
204 | def set_gain(self, db_gain): |
205 | if not self.is_not_stopped(): | |
29597680 IB |
206 | return |
207 | ||
1b4b78f5 IB |
208 | new_audio_segment = self.current_audio_segment + db_gain |
209 | ||
ccc8b4f2 IB |
210 | new_a_s_with_effect = None |
211 | if self.a_s_with_effect is not None: | |
212 | new_a_s_with_effect = self.a_s_with_effect + db_gain | |
213 | ||
29597680 IB |
214 | with self.music_lock: |
215 | self.current_audio_segment = new_audio_segment | |
ccc8b4f2 | 216 | self.a_s_with_effect = new_a_s_with_effect |
29597680 | 217 | |
8e50011c IB |
218 | def set_volume(self, value, delta = False): |
219 | [db_gain, self.volume] = gain(value + int(delta) * self.volume, self.volume) | |
1b4b78f5 IB |
220 | |
221 | self.set_gain(db_gain) | |
be27763f | 222 | |
b86db9f1 | 223 | def wait_end(self): |
0deb82a5 IB |
224 | self.wait_event.clear() |
225 | self.wait_event.wait() | |
d479af33 | 226 | |
29597680 IB |
227 | # Add some more functions to AudioSegments |
228 | def get_sample_slice_data(self, start_sample=0, end_sample=float('inf')): | |
229 | max_val = int(self.frame_count()) | |
230 | ||
231 | start_i = max(start_sample, 0) * self.frame_width | |
232 | end_i = min(end_sample, max_val) * self.frame_width | |
233 | ||
234 | return self._data[start_i:end_i] | |
235 | ||
236 | pydub.AudioSegment.get_sample_slice_data = get_sample_slice_data |