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1d14ffa9 FB |
1 | /* |
2 | * QEMU OS X CoreAudio audio driver | |
3 | * | |
4 | * Copyright (c) 2005 Mike Kronenberg | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | #include <CoreAudio/CoreAudio.h> | |
26 | #include <string.h> /* strerror */ | |
27 | #include <pthread.h> /* pthread_X */ | |
28 | ||
29 | #include "vl.h" | |
30 | ||
31 | #define AUDIO_CAP "coreaudio" | |
32 | #include "audio_int.h" | |
33 | ||
1d14ffa9 FB |
34 | struct { |
35 | int buffer_frames; | |
e59c1139 | 36 | int nbuffers; |
5e941d4b | 37 | int isAtexit; |
1d14ffa9 | 38 | } conf = { |
5e941d4b | 39 | .buffer_frames = 512, |
e59c1139 | 40 | .nbuffers = 4, |
5e941d4b | 41 | .isAtexit = 0 |
1d14ffa9 FB |
42 | }; |
43 | ||
44 | typedef struct coreaudioVoiceOut { | |
45 | HWVoiceOut hw; | |
46 | pthread_mutex_t mutex; | |
5e941d4b | 47 | int isAtexit; |
1d14ffa9 | 48 | AudioDeviceID outputDeviceID; |
5e941d4b | 49 | UInt32 audioDevicePropertyBufferFrameSize; |
1d14ffa9 | 50 | AudioStreamBasicDescription outputStreamBasicDescription; |
1d14ffa9 FB |
51 | int live; |
52 | int decr; | |
53 | int rpos; | |
54 | } coreaudioVoiceOut; | |
55 | ||
56 | static void coreaudio_logstatus (OSStatus status) | |
57 | { | |
58 | char *str = "BUG"; | |
59 | ||
60 | switch(status) { | |
61 | case kAudioHardwareNoError: | |
62 | str = "kAudioHardwareNoError"; | |
63 | break; | |
64 | ||
65 | case kAudioHardwareNotRunningError: | |
66 | str = "kAudioHardwareNotRunningError"; | |
67 | break; | |
68 | ||
69 | case kAudioHardwareUnspecifiedError: | |
70 | str = "kAudioHardwareUnspecifiedError"; | |
71 | break; | |
72 | ||
73 | case kAudioHardwareUnknownPropertyError: | |
74 | str = "kAudioHardwareUnknownPropertyError"; | |
75 | break; | |
76 | ||
77 | case kAudioHardwareBadPropertySizeError: | |
78 | str = "kAudioHardwareBadPropertySizeError"; | |
79 | break; | |
80 | ||
81 | case kAudioHardwareIllegalOperationError: | |
82 | str = "kAudioHardwareIllegalOperationError"; | |
83 | break; | |
84 | ||
85 | case kAudioHardwareBadDeviceError: | |
86 | str = "kAudioHardwareBadDeviceError"; | |
87 | break; | |
88 | ||
89 | case kAudioHardwareBadStreamError: | |
90 | str = "kAudioHardwareBadStreamError"; | |
91 | break; | |
92 | ||
93 | case kAudioHardwareUnsupportedOperationError: | |
94 | str = "kAudioHardwareUnsupportedOperationError"; | |
95 | break; | |
96 | ||
97 | case kAudioDeviceUnsupportedFormatError: | |
98 | str = "kAudioDeviceUnsupportedFormatError"; | |
99 | break; | |
100 | ||
101 | case kAudioDevicePermissionsError: | |
102 | str = "kAudioDevicePermissionsError"; | |
103 | break; | |
104 | ||
105 | default: | |
106 | AUD_log (AUDIO_CAP, "Reason: status code %ld\n", status); | |
107 | return; | |
108 | } | |
109 | ||
110 | AUD_log (AUDIO_CAP, "Reason: %s\n", str); | |
111 | } | |
112 | ||
113 | static void GCC_FMT_ATTR (2, 3) coreaudio_logerr ( | |
114 | OSStatus status, | |
115 | const char *fmt, | |
116 | ... | |
117 | ) | |
118 | { | |
119 | va_list ap; | |
120 | ||
121 | va_start (ap, fmt); | |
122 | AUD_log (AUDIO_CAP, fmt, ap); | |
123 | va_end (ap); | |
124 | ||
125 | coreaudio_logstatus (status); | |
126 | } | |
127 | ||
128 | static void GCC_FMT_ATTR (3, 4) coreaudio_logerr2 ( | |
129 | OSStatus status, | |
130 | const char *typ, | |
131 | const char *fmt, | |
132 | ... | |
133 | ) | |
134 | { | |
135 | va_list ap; | |
136 | ||
c0fe3827 | 137 | AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); |
1d14ffa9 FB |
138 | |
139 | va_start (ap, fmt); | |
140 | AUD_vlog (AUDIO_CAP, fmt, ap); | |
141 | va_end (ap); | |
142 | ||
143 | coreaudio_logstatus (status); | |
144 | } | |
145 | ||
5e941d4b FB |
146 | static inline UInt32 isPlaying (AudioDeviceID outputDeviceID) |
147 | { | |
148 | OSStatus status; | |
149 | UInt32 result = 0; | |
150 | UInt32 propertySize = sizeof(outputDeviceID); | |
151 | status = AudioDeviceGetProperty( | |
152 | outputDeviceID, 0, 0, | |
153 | kAudioDevicePropertyDeviceIsRunning, &propertySize, &result); | |
154 | if (status != kAudioHardwareNoError) { | |
155 | coreaudio_logerr(status, | |
156 | "Could not determine whether Device is playing\n"); | |
157 | } | |
158 | return result; | |
159 | } | |
160 | ||
161 | static void coreaudio_atexit (void) | |
162 | { | |
163 | conf.isAtexit = 1; | |
164 | } | |
165 | ||
1d14ffa9 FB |
166 | static int coreaudio_lock (coreaudioVoiceOut *core, const char *fn_name) |
167 | { | |
168 | int err; | |
169 | ||
170 | err = pthread_mutex_lock (&core->mutex); | |
171 | if (err) { | |
c0fe3827 | 172 | dolog ("Could not lock voice for %s\nReason: %s\n", |
1d14ffa9 FB |
173 | fn_name, strerror (err)); |
174 | return -1; | |
175 | } | |
176 | return 0; | |
177 | } | |
178 | ||
179 | static int coreaudio_unlock (coreaudioVoiceOut *core, const char *fn_name) | |
180 | { | |
181 | int err; | |
182 | ||
183 | err = pthread_mutex_unlock (&core->mutex); | |
184 | if (err) { | |
c0fe3827 | 185 | dolog ("Could not unlock voice for %s\nReason: %s\n", |
1d14ffa9 FB |
186 | fn_name, strerror (err)); |
187 | return -1; | |
188 | } | |
189 | return 0; | |
190 | } | |
191 | ||
192 | static int coreaudio_run_out (HWVoiceOut *hw) | |
193 | { | |
194 | int live, decr; | |
195 | coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; | |
196 | ||
197 | if (coreaudio_lock (core, "coreaudio_run_out")) { | |
198 | return 0; | |
199 | } | |
200 | ||
201 | live = audio_pcm_hw_get_live_out (hw); | |
202 | ||
203 | if (core->decr > live) { | |
204 | ldebug ("core->decr %d live %d core->live %d\n", | |
205 | core->decr, | |
206 | live, | |
207 | core->live); | |
208 | } | |
209 | ||
210 | decr = audio_MIN (core->decr, live); | |
211 | core->decr -= decr; | |
212 | ||
213 | core->live = live - decr; | |
214 | hw->rpos = core->rpos; | |
215 | ||
216 | coreaudio_unlock (core, "coreaudio_run_out"); | |
217 | return decr; | |
218 | } | |
219 | ||
220 | /* callback to feed audiooutput buffer */ | |
221 | static OSStatus audioDeviceIOProc( | |
222 | AudioDeviceID inDevice, | |
223 | const AudioTimeStamp* inNow, | |
224 | const AudioBufferList* inInputData, | |
225 | const AudioTimeStamp* inInputTime, | |
226 | AudioBufferList* outOutputData, | |
227 | const AudioTimeStamp* inOutputTime, | |
228 | void* hwptr) | |
229 | { | |
5e941d4b | 230 | UInt32 frame, frameCount; |
1d14ffa9 FB |
231 | float *out = outOutputData->mBuffers[0].mData; |
232 | HWVoiceOut *hw = hwptr; | |
233 | coreaudioVoiceOut *core = (coreaudioVoiceOut *) hwptr; | |
234 | int rpos, live; | |
235 | st_sample_t *src; | |
236 | #ifndef FLOAT_MIXENG | |
237 | #ifdef RECIPROCAL | |
238 | const float scale = 1.f / UINT_MAX; | |
239 | #else | |
240 | const float scale = UINT_MAX; | |
241 | #endif | |
242 | #endif | |
243 | ||
244 | if (coreaudio_lock (core, "audioDeviceIOProc")) { | |
245 | inInputTime = 0; | |
246 | return 0; | |
247 | } | |
248 | ||
5e941d4b | 249 | frameCount = core->audioDevicePropertyBufferFrameSize; |
1d14ffa9 FB |
250 | live = core->live; |
251 | ||
252 | /* if there are not enough samples, set signal and return */ | |
253 | if (live < frameCount) { | |
254 | inInputTime = 0; | |
255 | coreaudio_unlock (core, "audioDeviceIOProc(empty)"); | |
256 | return 0; | |
257 | } | |
258 | ||
259 | rpos = core->rpos; | |
260 | src = hw->mix_buf + rpos; | |
261 | ||
262 | /* fill buffer */ | |
263 | for (frame = 0; frame < frameCount; frame++) { | |
264 | #ifdef FLOAT_MIXENG | |
265 | *out++ = src[frame].l; /* left channel */ | |
266 | *out++ = src[frame].r; /* right channel */ | |
267 | #else | |
268 | #ifdef RECIPROCAL | |
269 | *out++ = src[frame].l * scale; /* left channel */ | |
270 | *out++ = src[frame].r * scale; /* right channel */ | |
271 | #else | |
272 | *out++ = src[frame].l / scale; /* left channel */ | |
273 | *out++ = src[frame].r / scale; /* right channel */ | |
274 | #endif | |
275 | #endif | |
276 | } | |
277 | ||
278 | /* cleanup */ | |
279 | mixeng_clear (src, frameCount); | |
280 | rpos = (rpos + frameCount) % hw->samples; | |
5e941d4b | 281 | core->decr += frameCount; |
1d14ffa9 FB |
282 | core->rpos = rpos; |
283 | ||
284 | coreaudio_unlock (core, "audioDeviceIOProc"); | |
285 | return 0; | |
286 | } | |
287 | ||
288 | static int coreaudio_write (SWVoiceOut *sw, void *buf, int len) | |
289 | { | |
290 | return audio_pcm_sw_write (sw, buf, len); | |
291 | } | |
292 | ||
c0fe3827 | 293 | static int coreaudio_init_out (HWVoiceOut *hw, audsettings_t *as) |
1d14ffa9 FB |
294 | { |
295 | OSStatus status; | |
296 | coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; | |
297 | UInt32 propertySize; | |
298 | int err; | |
299 | int bits = 8; | |
300 | int endianess = 0; | |
5e941d4b FB |
301 | const char *typ = "playback"; |
302 | AudioValueRange frameRange; | |
1d14ffa9 FB |
303 | |
304 | /* create mutex */ | |
305 | err = pthread_mutex_init(&core->mutex, NULL); | |
306 | if (err) { | |
c0fe3827 | 307 | dolog("Could not create mutex\nReason: %s\n", strerror (err)); |
1d14ffa9 FB |
308 | return -1; |
309 | } | |
310 | ||
c0fe3827 | 311 | if (as->fmt == AUD_FMT_S16 || as->fmt == AUD_FMT_U16) { |
1d14ffa9 FB |
312 | bits = 16; |
313 | endianess = 1; | |
314 | } | |
315 | ||
316 | audio_pcm_init_info ( | |
317 | &hw->info, | |
c0fe3827 | 318 | as, |
1d14ffa9 FB |
319 | /* Following is irrelevant actually since we do not use |
320 | mixengs clipping routines */ | |
321 | audio_need_to_swap_endian (endianess) | |
322 | ); | |
1d14ffa9 FB |
323 | |
324 | /* open default output device */ | |
325 | propertySize = sizeof(core->outputDeviceID); | |
326 | status = AudioHardwareGetProperty( | |
327 | kAudioHardwarePropertyDefaultOutputDevice, | |
328 | &propertySize, | |
329 | &core->outputDeviceID); | |
330 | if (status != kAudioHardwareNoError) { | |
331 | coreaudio_logerr2 (status, typ, | |
c0fe3827 | 332 | "Could not get default output Device\n"); |
1d14ffa9 FB |
333 | return -1; |
334 | } | |
335 | if (core->outputDeviceID == kAudioDeviceUnknown) { | |
c0fe3827 | 336 | dolog ("Could not initialize %s - Unknown Audiodevice\n", typ); |
1d14ffa9 FB |
337 | return -1; |
338 | } | |
339 | ||
5e941d4b FB |
340 | /* get minimum and maximum buffer frame sizes */ |
341 | propertySize = sizeof(frameRange); | |
342 | status = AudioDeviceGetProperty( | |
343 | core->outputDeviceID, | |
344 | 0, | |
345 | 0, | |
346 | kAudioDevicePropertyBufferFrameSizeRange, | |
347 | &propertySize, | |
348 | &frameRange); | |
349 | if (status != kAudioHardwareNoError) { | |
350 | coreaudio_logerr2 (status, typ, | |
351 | "Could not get device buffer frame range\n"); | |
352 | return -1; | |
353 | } | |
354 | ||
355 | if (frameRange.mMinimum > conf.buffer_frames) { | |
356 | core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMinimum; | |
357 | dolog ("warning: Upsizing Buffer Frames to %f\n", frameRange.mMinimum); | |
358 | } | |
359 | else if (frameRange.mMaximum < conf.buffer_frames) { | |
360 | core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMaximum; | |
361 | dolog ("warning: Downsizing Buffer Frames to %f\n", frameRange.mMaximum); | |
362 | } | |
363 | else { | |
364 | core->audioDevicePropertyBufferFrameSize = conf.buffer_frames; | |
365 | } | |
366 | ||
367 | /* set Buffer Frame Size */ | |
368 | propertySize = sizeof(core->audioDevicePropertyBufferFrameSize); | |
1d14ffa9 FB |
369 | status = AudioDeviceSetProperty( |
370 | core->outputDeviceID, | |
371 | NULL, | |
372 | 0, | |
373 | false, | |
5e941d4b | 374 | kAudioDevicePropertyBufferFrameSize, |
1d14ffa9 | 375 | propertySize, |
5e941d4b | 376 | &core->audioDevicePropertyBufferFrameSize); |
1d14ffa9 FB |
377 | if (status != kAudioHardwareNoError) { |
378 | coreaudio_logerr2 (status, typ, | |
5e941d4b FB |
379 | "Could not set device buffer frame size %ld\n", |
380 | core->audioDevicePropertyBufferFrameSize); | |
1d14ffa9 FB |
381 | return -1; |
382 | } | |
383 | ||
5e941d4b FB |
384 | /* get Buffer Frame Size */ |
385 | propertySize = sizeof(core->audioDevicePropertyBufferFrameSize); | |
1d14ffa9 FB |
386 | status = AudioDeviceGetProperty( |
387 | core->outputDeviceID, | |
388 | 0, | |
389 | false, | |
5e941d4b | 390 | kAudioDevicePropertyBufferFrameSize, |
1d14ffa9 | 391 | &propertySize, |
5e941d4b | 392 | &core->audioDevicePropertyBufferFrameSize); |
1d14ffa9 | 393 | if (status != kAudioHardwareNoError) { |
5e941d4b FB |
394 | coreaudio_logerr2 (status, typ, |
395 | "Could not get device buffer frame size\n"); | |
1d14ffa9 FB |
396 | return -1; |
397 | } | |
e59c1139 | 398 | hw->samples = conf.nbuffers * core->audioDevicePropertyBufferFrameSize; |
1d14ffa9 FB |
399 | |
400 | /* get StreamFormat */ | |
401 | propertySize = sizeof(core->outputStreamBasicDescription); | |
402 | status = AudioDeviceGetProperty( | |
403 | core->outputDeviceID, | |
404 | 0, | |
405 | false, | |
406 | kAudioDevicePropertyStreamFormat, | |
407 | &propertySize, | |
408 | &core->outputStreamBasicDescription); | |
409 | if (status != kAudioHardwareNoError) { | |
410 | coreaudio_logerr2 (status, typ, | |
c0fe3827 | 411 | "Could not get Device Stream properties\n"); |
1d14ffa9 FB |
412 | core->outputDeviceID = kAudioDeviceUnknown; |
413 | return -1; | |
414 | } | |
415 | ||
416 | /* set Samplerate */ | |
5e941d4b | 417 | core->outputStreamBasicDescription.mSampleRate = (Float64) as->freq; |
1d14ffa9 FB |
418 | propertySize = sizeof(core->outputStreamBasicDescription); |
419 | status = AudioDeviceSetProperty( | |
420 | core->outputDeviceID, | |
421 | 0, | |
422 | 0, | |
423 | 0, | |
424 | kAudioDevicePropertyStreamFormat, | |
425 | propertySize, | |
426 | &core->outputStreamBasicDescription); | |
427 | if (status != kAudioHardwareNoError) { | |
575b5dc4 FB |
428 | coreaudio_logerr2 (status, typ, "Could not set samplerate %d\n", |
429 | as->freq); | |
1d14ffa9 FB |
430 | core->outputDeviceID = kAudioDeviceUnknown; |
431 | return -1; | |
432 | } | |
433 | ||
434 | /* set Callback */ | |
435 | status = AudioDeviceAddIOProc(core->outputDeviceID, audioDeviceIOProc, hw); | |
436 | if (status != kAudioHardwareNoError) { | |
c0fe3827 | 437 | coreaudio_logerr2 (status, typ, "Could not set IOProc\n"); |
1d14ffa9 FB |
438 | core->outputDeviceID = kAudioDeviceUnknown; |
439 | return -1; | |
440 | } | |
441 | ||
442 | /* start Playback */ | |
5e941d4b | 443 | if (!isPlaying(core->outputDeviceID)) { |
1d14ffa9 FB |
444 | status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc); |
445 | if (status != kAudioHardwareNoError) { | |
c0fe3827 | 446 | coreaudio_logerr2 (status, typ, "Could not start playback\n"); |
1d14ffa9 FB |
447 | AudioDeviceRemoveIOProc(core->outputDeviceID, audioDeviceIOProc); |
448 | core->outputDeviceID = kAudioDeviceUnknown; | |
449 | return -1; | |
450 | } | |
1d14ffa9 FB |
451 | } |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | static void coreaudio_fini_out (HWVoiceOut *hw) | |
457 | { | |
458 | OSStatus status; | |
459 | int err; | |
460 | coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; | |
461 | ||
5e941d4b FB |
462 | if (!conf.isAtexit) { |
463 | /* stop playback */ | |
464 | if (isPlaying(core->outputDeviceID)) { | |
465 | status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc); | |
466 | if (status != kAudioHardwareNoError) { | |
467 | coreaudio_logerr (status, "Could not stop playback\n"); | |
468 | } | |
1d14ffa9 | 469 | } |
1d14ffa9 | 470 | |
5e941d4b FB |
471 | /* remove callback */ |
472 | status = AudioDeviceRemoveIOProc(core->outputDeviceID, | |
473 | audioDeviceIOProc); | |
474 | if (status != kAudioHardwareNoError) { | |
475 | coreaudio_logerr (status, "Could not remove IOProc\n"); | |
476 | } | |
1d14ffa9 FB |
477 | } |
478 | core->outputDeviceID = kAudioDeviceUnknown; | |
479 | ||
480 | /* destroy mutex */ | |
481 | err = pthread_mutex_destroy(&core->mutex); | |
482 | if (err) { | |
c0fe3827 | 483 | dolog("Could not destroy mutex\nReason: %s\n", strerror (err)); |
1d14ffa9 FB |
484 | } |
485 | } | |
486 | ||
487 | static int coreaudio_ctl_out (HWVoiceOut *hw, int cmd, ...) | |
488 | { | |
489 | OSStatus status; | |
490 | coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw; | |
491 | ||
492 | switch (cmd) { | |
493 | case VOICE_ENABLE: | |
494 | /* start playback */ | |
5e941d4b | 495 | if (!isPlaying(core->outputDeviceID)) { |
1d14ffa9 FB |
496 | status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc); |
497 | if (status != kAudioHardwareNoError) { | |
5e941d4b | 498 | coreaudio_logerr (status, "Could not resume playback\n"); |
1d14ffa9 | 499 | } |
1d14ffa9 FB |
500 | } |
501 | break; | |
502 | ||
503 | case VOICE_DISABLE: | |
504 | /* stop playback */ | |
5e941d4b FB |
505 | if (!conf.isAtexit) { |
506 | if (isPlaying(core->outputDeviceID)) { | |
507 | status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc); | |
508 | if (status != kAudioHardwareNoError) { | |
509 | coreaudio_logerr (status, "Could not pause playback\n"); | |
510 | } | |
1d14ffa9 | 511 | } |
1d14ffa9 FB |
512 | } |
513 | break; | |
514 | } | |
515 | return 0; | |
516 | } | |
517 | ||
518 | static void *coreaudio_audio_init (void) | |
519 | { | |
5e941d4b | 520 | atexit(coreaudio_atexit); |
1d14ffa9 FB |
521 | return &coreaudio_audio_init; |
522 | } | |
523 | ||
524 | static void coreaudio_audio_fini (void *opaque) | |
525 | { | |
526 | (void) opaque; | |
527 | } | |
528 | ||
529 | static struct audio_option coreaudio_options[] = { | |
530 | {"BUFFER_SIZE", AUD_OPT_INT, &conf.buffer_frames, | |
531 | "Size of the buffer in frames", NULL, 0}, | |
e59c1139 FB |
532 | {"BUFFER_COUNT", AUD_OPT_INT, &conf.nbuffers, |
533 | "Number of buffers", NULL, 0}, | |
1d14ffa9 FB |
534 | {NULL, 0, NULL, NULL, NULL, 0} |
535 | }; | |
536 | ||
537 | static struct audio_pcm_ops coreaudio_pcm_ops = { | |
538 | coreaudio_init_out, | |
539 | coreaudio_fini_out, | |
540 | coreaudio_run_out, | |
541 | coreaudio_write, | |
542 | coreaudio_ctl_out, | |
543 | ||
544 | NULL, | |
545 | NULL, | |
546 | NULL, | |
547 | NULL, | |
548 | NULL | |
549 | }; | |
550 | ||
551 | struct audio_driver coreaudio_audio_driver = { | |
552 | INIT_FIELD (name = ) "coreaudio", | |
553 | INIT_FIELD (descr = ) | |
554 | "CoreAudio http://developer.apple.com/audio/coreaudio.html", | |
555 | INIT_FIELD (options = ) coreaudio_options, | |
556 | INIT_FIELD (init = ) coreaudio_audio_init, | |
557 | INIT_FIELD (fini = ) coreaudio_audio_fini, | |
558 | INIT_FIELD (pcm_ops = ) &coreaudio_pcm_ops, | |
559 | INIT_FIELD (can_be_default = ) 1, | |
560 | INIT_FIELD (max_voices_out = ) 1, | |
561 | INIT_FIELD (max_voices_in = ) 0, | |
562 | INIT_FIELD (voice_size_out = ) sizeof (coreaudioVoiceOut), | |
563 | INIT_FIELD (voice_size_in = ) 0 | |
564 | }; |