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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 |
1b4b78f5 | 44 | self.volume_factor = gain |
29597680 | 45 | self.music_lock = Lock("music__" + filename) |
0deb82a5 | 46 | self.wait_event = threading.Event() |
be27763f | 47 | |
29597680 IB |
48 | threading.Thread(name = "MSMusicLoad", target = self.load).start() |
49 | ||
50 | def on_enter_loading(self): | |
51 | with file_lock: | |
52 | try: | |
53 | print("Loading « {} »".format(self.name)) | |
1b4b78f5 IB |
54 | db_gain = gain(self.volume_factor * 100) |
55 | self.audio_segment = pydub.AudioSegment.from_file(self.filename).set_frame_rate(44100).apply_gain(db_gain) | |
29597680 IB |
56 | self.sound_duration = self.audio_segment.duration_seconds |
57 | except Exception as e: | |
58 | print("failed to load « {} »: {}".format(self.name, e)) | |
59 | self.loading_error = e | |
60 | self.fail() | |
61 | else: | |
62 | self.success() | |
63 | print("Loaded « {} »".format(self.name)) | |
60979de4 IB |
64 | |
65 | def check_is_loaded(self): | |
66 | return self.state.startswith('loaded_') | |
be27763f | 67 | |
29597680 IB |
68 | def is_not_stopped(self): |
69 | return self.check_is_loaded() and not self.is_loaded_stopped() | |
0e5d59f7 | 70 | |
9de92b6d | 71 | def is_paused(self): |
29597680 | 72 | return self.is_loaded_paused() |
9de92b6d | 73 | |
98ff4305 IB |
74 | @property |
75 | def sound_position(self): | |
29597680 IB |
76 | if self.is_not_stopped(): |
77 | return self.current_frame / self.current_audio_segment.frame_rate | |
98ff4305 IB |
78 | else: |
79 | return 0 | |
80 | ||
6f4944c1 | 81 | def play(self, fade_in = 0, volume = 100, loop = 0, start_at = 0): |
1b4b78f5 IB |
82 | db_gain = gain(volume) + self.mapping.master_gain |
83 | self.volume = volume | |
6f4944c1 | 84 | self.loop = loop |
1b4b78f5 | 85 | |
29597680 IB |
86 | ms = int(start_at * 1000) |
87 | ms_fi = max(1, int(fade_in * 1000)) | |
88 | with self.music_lock: | |
1b4b78f5 | 89 | self.current_audio_segment = (self.audio_segment + db_gain).fade(from_gain=-120, duration=ms_fi, start=ms) |
6f4944c1 IB |
90 | self.initial_frame = int(start_at * self.audio_segment.frame_rate) |
91 | self.before_loaded_playing() | |
29597680 IB |
92 | self.start_playing() |
93 | ||
6f4944c1 IB |
94 | def before_loaded_playing(self): |
95 | self.current_frame = self.initial_frame | |
29597680 IB |
96 | with self.music_lock: |
97 | segment = self.current_audio_segment | |
98 | ||
99 | self.stream = sd.RawOutputStream(samplerate=segment.frame_rate, | |
100 | channels=segment.channels, | |
101 | dtype='int' + str(8*segment.sample_width), # FIXME: ? | |
102 | latency=1., | |
103 | callback=self.play_callback, | |
104 | finished_callback=self.finished_callback | |
105 | ) | |
106 | ||
107 | def on_enter_loaded_playing(self): | |
108 | self.stream.start() | |
109 | ||
110 | def on_enter_loaded_paused(self): | |
111 | self.stream.stop() | |
112 | ||
113 | def finished_callback(self): | |
114 | if self.is_loaded_playing(): | |
115 | self.stop_playing() | |
116 | if self.is_loaded_stopping(): | |
117 | self.stopped() | |
118 | ||
0deb82a5 IB |
119 | def on_enter_loaded_stopped(self): |
120 | self.wait_event.set() | |
121 | ||
29597680 IB |
122 | def play_callback(self, out_data, frame_count, time_info, status_flags): |
123 | with self.music_lock: | |
124 | audio_segment = self.current_audio_segment.get_sample_slice_data( | |
125 | start_sample=self.current_frame, | |
126 | end_sample=self.current_frame + frame_count | |
127 | ) | |
128 | self.current_frame += frame_count | |
129 | if len(audio_segment) == 0: | |
6f4944c1 IB |
130 | if self.is_loaded_playing() and self.loop != 0: |
131 | self.loop -= 1 | |
132 | self.current_frame = self.initial_frame | |
133 | else: | |
134 | raise sd.CallbackStop | |
29597680 IB |
135 | |
136 | out_data[:] = audio_segment.ljust(len(out_data), b'\0') | |
be27763f | 137 | |
52d58baf IB |
138 | def seek(self, value = 0, delta = False): |
139 | # We don't want to do that while stopping | |
140 | if not (self.is_loaded_playing() or self.is_loaded_paused()): | |
141 | return | |
142 | with self.music_lock: | |
143 | self.current_frame = max(0, int(delta) * self.current_frame + int(value * self.audio_segment.frame_rate)) | |
144 | ||
1b4b78f5 | 145 | def stop(self, fade_out = 0, wait = False): |
29597680 IB |
146 | if self.is_loaded_playing(): |
147 | ms = int(self.sound_position * 1000) | |
148 | ms_fo = max(1, int(fade_out * 1000)) | |
149 | ||
150 | with self.music_lock: | |
151 | self.current_audio_segment = self.current_audio_segment[:ms + ms_fo].fade_out(ms_fo) | |
152 | self.stop_playing() | |
1b4b78f5 IB |
153 | if wait: |
154 | self.wait_end() | |
0e5d59f7 | 155 | else: |
29597680 IB |
156 | self.stop_playing() |
157 | self.stopped() | |
0e5d59f7 | 158 | |
1b4b78f5 IB |
159 | def set_gain(self, db_gain): |
160 | if not self.is_not_stopped(): | |
29597680 IB |
161 | return |
162 | ||
1b4b78f5 IB |
163 | new_audio_segment = self.current_audio_segment + db_gain |
164 | ||
29597680 IB |
165 | with self.music_lock: |
166 | self.current_audio_segment = new_audio_segment | |
167 | ||
8e50011c IB |
168 | def set_volume(self, value, delta = False): |
169 | [db_gain, self.volume] = gain(value + int(delta) * self.volume, self.volume) | |
1b4b78f5 IB |
170 | |
171 | self.set_gain(db_gain) | |
be27763f | 172 | |
b86db9f1 | 173 | def wait_end(self): |
0deb82a5 IB |
174 | self.wait_event.clear() |
175 | self.wait_event.wait() | |
d479af33 | 176 | |
29597680 IB |
177 | # Add some more functions to AudioSegments |
178 | def get_sample_slice_data(self, start_sample=0, end_sample=float('inf')): | |
179 | max_val = int(self.frame_count()) | |
180 | ||
181 | start_i = max(start_sample, 0) * self.frame_width | |
182 | end_i = min(end_sample, max_val) * self.frame_width | |
183 | ||
184 | return self._data[start_i:end_i] | |
185 | ||
186 | pydub.AudioSegment.get_sample_slice_data = get_sample_slice_data |