audio/coreaudio.c

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