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)
 194 {
 195     int live, decr;
 196     coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;
 197
 198     if (coreaudio_lock (core, "coreaudio_run_out")) {
 199         return 0;
 200     }
 201
 202     live = audio_pcm_hw_get_live_out (hw);
 203
 204     if (core->decr > live) {
 205         ldebug ("core->decr %d live %d core->live %d\n",
 206                 core->decr,
 207                 live,
 208                 core->live);
 209     }
 210
 211     decr = audio_MIN (core->decr, live);
 212     core->decr -= decr;
 213
 214     core->live = live - decr;
 215     hw->rpos = core->rpos;
 216
 217     coreaudio_unlock (core, "coreaudio_run_out");
 218     return decr;
 219 }
 220
 221 /* callback to feed audiooutput buffer */
 222 static OSStatus audioDeviceIOProc(
 223     AudioDeviceID inDevice,
 224     const AudioTimeStamp* inNow,
 225     const AudioBufferList* inInputData,
 226     const AudioTimeStamp* inInputTime,
 227     AudioBufferList* outOutputData,
 228     const AudioTimeStamp* inOutputTime,
 229     void* hwptr)
 230 {
 231     UInt32 frame, frameCount;
 232     float *out = outOutputData->mBuffers[0].mData;
 233     HWVoiceOut *hw = hwptr;
 234     coreaudioVoiceOut *core = (coreaudioVoiceOut *) hwptr;
 235     int rpos, live;
 236     struct st_sample *src;
 237 #ifndef FLOAT_MIXENG
 238 #ifdef RECIPROCAL
 239     const float scale = 1.f / UINT_MAX;
 240 #else
 241     const float scale = UINT_MAX;
 242 #endif
 243 #endif
 244
 245     if (coreaudio_lock (core, "audioDeviceIOProc")) {
 246         inInputTime = 0;
 247         return 0;
 248     }
 249
 250     frameCount = core->audioDevicePropertyBufferFrameSize;
 251     live = core->live;
 252
 253     /* if there are not enough samples, set signal and return */
 254     if (live < frameCount) {
 255         inInputTime = 0;
 256         coreaudio_unlock (core, "audioDeviceIOProc(empty)");
 257         return 0;
 258     }
 259
 260     rpos = core->rpos;
 261     src = hw->mix_buf + rpos;
 262
 263     /* fill buffer */
 264     for (frame = 0; frame < frameCount; frame++) {
 265 #ifdef FLOAT_MIXENG
 266         *out++ = src[frame].l; /* left channel */
 267         *out++ = src[frame].r; /* right channel */
 268 #else
 269 #ifdef RECIPROCAL
 270         *out++ = src[frame].l * scale; /* left channel */
 271         *out++ = src[frame].r * scale; /* right channel */
 272 #else
 273         *out++ = src[frame].l / scale; /* left channel */
 274         *out++ = src[frame].r / scale; /* right channel */
 275 #endif
 276 #endif
 277     }
 278
 279     rpos = (rpos + frameCount) % hw->samples;
 280     core->decr += frameCount;
 281     core->rpos = rpos;
 282
 283     coreaudio_unlock (core, "audioDeviceIOProc");
 284     return 0;
 285 }
 286
 287 static int coreaudio_write (SWVoiceOut *sw, void *buf, int len)
 288 {
 289     return audio_pcm_sw_write (sw, buf, len);
 290 }
 291
 292 static int coreaudio_init_out (HWVoiceOut *hw, struct audsettings *as)
 293 {
 294     OSStatus status;
 295     coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;
 296     UInt32 propertySize;
 297     int err;
 298     const char *typ = "playback";
 299     AudioValueRange frameRange;
 300
 301     /* create mutex */
 302     err = pthread_mutex_init(&core->mutex, NULL);
 303     if (err) {
 304         dolog("Could not create mutex\nReason: %s\n", strerror (err));
 305         return -1;
 306     }
 307
 308     audio_pcm_init_info (&hw->info, as);
 309
 310     /* open default output device */
 311     propertySize = sizeof(core->outputDeviceID);
 312     status = AudioHardwareGetProperty(
 313         kAudioHardwarePropertyDefaultOutputDevice,
 314         &propertySize,
 315         &core->outputDeviceID);
 316     if (status != kAudioHardwareNoError) {
 317         coreaudio_logerr2 (status, typ,
 318                            "Could not get default output Device\n");
 319         return -1;
 320     }
 321     if (core->outputDeviceID == kAudioDeviceUnknown) {
 322         dolog ("Could not initialize %s - Unknown Audiodevice\n", typ);
 323         return -1;
 324     }
 325
 326     /* get minimum and maximum buffer frame sizes */
 327     propertySize = sizeof(frameRange);
 328     status = AudioDeviceGetProperty(
 329         core->outputDeviceID,
 330         0,
 331         0,
 332         kAudioDevicePropertyBufferFrameSizeRange,
 333         &propertySize,
 334         &frameRange);
 335     if (status != kAudioHardwareNoError) {
 336         coreaudio_logerr2 (status, typ,
 337                            "Could not get device buffer frame range\n");
 338         return -1;
 339     }
 340
 341     if (frameRange.mMinimum > conf.buffer_frames) {
 342         core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMinimum;
 343         dolog ("warning: Upsizing Buffer Frames to %f\n", frameRange.mMinimum);
 344     }
 345     else if (frameRange.mMaximum < conf.buffer_frames) {
 346         core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMaximum;
 347         dolog ("warning: Downsizing Buffer Frames to %f\n", frameRange.mMaximum);
 348     }
 349     else {
 350         core->audioDevicePropertyBufferFrameSize = conf.buffer_frames;
 351     }
 352
 353     /* set Buffer Frame Size */
 354     propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
 355     status = AudioDeviceSetProperty(
 356         core->outputDeviceID,
 357         NULL,
 358         0,
 359         false,
 360         kAudioDevicePropertyBufferFrameSize,
 361         propertySize,
 362         &core->audioDevicePropertyBufferFrameSize);
 363     if (status != kAudioHardwareNoError) {
 364         coreaudio_logerr2 (status, typ,
 365                            "Could not set device buffer frame size %ld\n",
 366                            core->audioDevicePropertyBufferFrameSize);
 367         return -1;
 368     }
 369
 370     /* get Buffer Frame Size */
 371     propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
 372     status = AudioDeviceGetProperty(
 373         core->outputDeviceID,
 374         0,
 375         false,
 376         kAudioDevicePropertyBufferFrameSize,
 377         &propertySize,
 378         &core->audioDevicePropertyBufferFrameSize);
 379     if (status != kAudioHardwareNoError) {
 380         coreaudio_logerr2 (status, typ,
 381                            "Could not get device buffer frame size\n");
 382         return -1;
 383     }
 384     hw->samples = conf.nbuffers * core->audioDevicePropertyBufferFrameSize;
 385
 386     /* get StreamFormat */
 387     propertySize = sizeof(core->outputStreamBasicDescription);
 388     status = AudioDeviceGetProperty(
 389         core->outputDeviceID,
 390         0,
 391         false,
 392         kAudioDevicePropertyStreamFormat,
 393         &propertySize,
 394         &core->outputStreamBasicDescription);
 395     if (status != kAudioHardwareNoError) {
 396         coreaudio_logerr2 (status, typ,
 397                            "Could not get Device Stream properties\n");
 398         core->outputDeviceID = kAudioDeviceUnknown;
 399         return -1;
 400     }
 401
 402     /* set Samplerate */
 403     core->outputStreamBasicDescription.mSampleRate = (Float64) as->freq;
 404     propertySize = sizeof(core->outputStreamBasicDescription);
 405     status = AudioDeviceSetProperty(
 406         core->outputDeviceID,
 407         0,
 408         0,
 409         0,
 410         kAudioDevicePropertyStreamFormat,
 411         propertySize,
 412         &core->outputStreamBasicDescription);
 413     if (status != kAudioHardwareNoError) {
 414         coreaudio_logerr2 (status, typ, "Could not set samplerate %d\n",
 415                            as->freq);
 416         core->outputDeviceID = kAudioDeviceUnknown;
 417         return -1;
 418     }
 419
 420     /* set Callback */
 421     status = AudioDeviceAddIOProc(core->outputDeviceID, audioDeviceIOProc, hw);
 422     if (status != kAudioHardwareNoError) {
 423         coreaudio_logerr2 (status, typ, "Could not set IOProc\n");
 424         core->outputDeviceID = kAudioDeviceUnknown;
 425         return -1;
 426     }
 427
 428     /* start Playback */
 429     if (!isPlaying(core->outputDeviceID)) {
 430         status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc);
 431         if (status != kAudioHardwareNoError) {
 432             coreaudio_logerr2 (status, typ, "Could not start playback\n");
 433             AudioDeviceRemoveIOProc(core->outputDeviceID, audioDeviceIOProc);
 434             core->outputDeviceID = kAudioDeviceUnknown;
 435             return -1;
 436         }
 437     }
 438
 439     return 0;
 440 }
 441
 442 static void coreaudio_fini_out (HWVoiceOut *hw)
 443 {
 444     OSStatus status;
 445     int err;
 446     coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;
 447
 448     if (!conf.isAtexit) {
 449         /* stop playback */
 450         if (isPlaying(core->outputDeviceID)) {
 451             status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc);
 452             if (status != kAudioHardwareNoError) {
 453                 coreaudio_logerr (status, "Could not stop playback\n");
 454             }
 455         }
 456
 457         /* remove callback */
 458         status = AudioDeviceRemoveIOProc(core->outputDeviceID,
 459                                          audioDeviceIOProc);
 460         if (status != kAudioHardwareNoError) {
 461             coreaudio_logerr (status, "Could not remove IOProc\n");
 462         }
 463     }
 464     core->outputDeviceID = kAudioDeviceUnknown;
 465
 466     /* destroy mutex */
 467     err = pthread_mutex_destroy(&core->mutex);
 468     if (err) {
 469         dolog("Could not destroy mutex\nReason: %s\n", strerror (err));
 470     }
 471 }
 472
 473 static int coreaudio_ctl_out (HWVoiceOut *hw, int cmd, ...)
 474 {
 475     OSStatus status;
 476     coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;
 477
 478     switch (cmd) {
 479     case VOICE_ENABLE:
 480         /* start playback */
 481         if (!isPlaying(core->outputDeviceID)) {
 482             status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc);
 483             if (status != kAudioHardwareNoError) {
 484                 coreaudio_logerr (status, "Could not resume playback\n");
 485             }
 486         }
 487         break;
 488
 489     case VOICE_DISABLE:
 490         /* stop playback */
 491         if (!conf.isAtexit) {
 492             if (isPlaying(core->outputDeviceID)) {
 493                 status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc);
 494                 if (status != kAudioHardwareNoError) {
 495                     coreaudio_logerr (status, "Could not pause playback\n");
 496                 }
 497             }
 498         }
 499         break;
 500     }
 501     return 0;
 502 }
 503
 504 static void *coreaudio_audio_init (void)
 505 {
 506     atexit(coreaudio_atexit);
 507     return &coreaudio_audio_init;
 508 }
 509
 510 static void coreaudio_audio_fini (void *opaque)
 511 {
 512     (void) opaque;
 513 }
 514
 515 static struct audio_option coreaudio_options[] = {
 516     {"BUFFER_SIZE", AUD_OPT_INT, &conf.buffer_frames,
 517      "Size of the buffer in frames", NULL, 0},
 518     {"BUFFER_COUNT", AUD_OPT_INT, &conf.nbuffers,
 519      "Number of buffers", NULL, 0},
 520     {NULL, 0, NULL, NULL, NULL, 0}
 521 };
 522
 523 static struct audio_pcm_ops coreaudio_pcm_ops = {
 524     coreaudio_init_out,
 525     coreaudio_fini_out,
 526     coreaudio_run_out,
 527     coreaudio_write,
 528     coreaudio_ctl_out,
 529
 530     NULL,
 531     NULL,
 532     NULL,
 533     NULL,
 534     NULL
 535 };
 536
 537 struct audio_driver coreaudio_audio_driver = {
 538     INIT_FIELD (name           = ) "coreaudio",
 539     INIT_FIELD (descr          = )
 540     "CoreAudio http://developer.apple.com/audio/coreaudio.html",
 541     INIT_FIELD (options        = ) coreaudio_options,
 542     INIT_FIELD (init           = ) coreaudio_audio_init,
 543     INIT_FIELD (fini           = ) coreaudio_audio_fini,
 544     INIT_FIELD (pcm_ops        = ) &coreaudio_pcm_ops,
 545     INIT_FIELD (can_be_default = ) 1,
 546     INIT_FIELD (max_voices_out = ) 1,
 547     INIT_FIELD (max_voices_in  = ) 0,
 548     INIT_FIELD (voice_size_out = ) sizeof (coreaudioVoiceOut),
 549     INIT_FIELD (voice_size_in  = ) 0
 550 };