audio/audio_template.h

   1 /*
   2  * QEMU Audio subsystem header
   3  *
   4  * Copyright (c) 2005 Vassili Karpov (malc)
   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 #ifdef DAC
  26 #define NAME "playback"
  27 #define HWBUF hw->mix_buf
  28 #define TYPE out
  29 #define HW HWVoiceOut
  30 #define SW SWVoiceOut
  31 #else
  32 #define NAME "capture"
  33 #define TYPE in
  34 #define HW HWVoiceIn
  35 #define SW SWVoiceIn
  36 #define HWBUF hw->conv_buf
  37 #endif
  38
  39 static void glue(audio_init_nb_voices_, TYPE)(AudioState *s,
  40                                               struct audio_driver *drv)
  41 {
  42     int max_voices = glue (drv->max_voices_, TYPE);
  43     int voice_size = glue (drv->voice_size_, TYPE);
  44
  45     if (glue (s->nb_hw_voices_, TYPE) > max_voices) {
  46         if (!max_voices) {
  47 #ifdef DAC
  48             dolog ("Driver `%s' does not support " NAME "\n", drv->name);
  49 #endif
  50         }
  51         else {
  52             dolog ("Driver `%s' does not support %d " NAME " voices, max %d\n",
  53                    drv->name,
  54                    glue (s->nb_hw_voices_, TYPE),
  55                    max_voices);
  56         }
  57         glue (s->nb_hw_voices_, TYPE) = max_voices;
  58     }
  59
  60     if (audio_bug(__func__, !voice_size && max_voices)) {
  61         dolog ("drv=`%s' voice_size=0 max_voices=%d\n",
  62                drv->name, max_voices);
  63         glue (s->nb_hw_voices_, TYPE) = 0;
  64     }
  65
  66     if (audio_bug(__func__, voice_size && !max_voices)) {
  67         dolog ("drv=`%s' voice_size=%d max_voices=0\n",
  68                drv->name, voice_size);
  69     }
  70 }
  71
  72 static void glue (audio_pcm_hw_free_resources_, TYPE) (HW *hw)
  73 {
  74     g_free(hw->buf_emul);
  75     g_free (HWBUF);
  76     HWBUF = NULL;
  77 }
  78
  79 static void glue(audio_pcm_hw_alloc_resources_, TYPE)(HW *hw)
  80 {
  81     if (glue(audio_get_pdo_, TYPE)(hw->s->dev)->mixing_engine) {
  82         size_t samples = hw->samples;
  83         if (audio_bug(__func__, samples == 0)) {
  84             dolog("Attempted to allocate empty buffer\n");
  85         }
  86
  87         HWBUF = g_malloc0(sizeof(STSampleBuffer) + sizeof(st_sample) * samples);
  88         HWBUF->size = samples;
  89     } else {
  90         HWBUF = NULL;
  91     }
  92 }
  93
  94 static void glue (audio_pcm_sw_free_resources_, TYPE) (SW *sw)
  95 {
  96     g_free (sw->buf);
  97
  98     if (sw->rate) {
  99         st_rate_stop (sw->rate);
 100     }
 101
 102     sw->buf = NULL;
 103     sw->rate = NULL;
 104 }
 105
 106 static int glue (audio_pcm_sw_alloc_resources_, TYPE) (SW *sw)
 107 {
 108     int samples;
 109
 110     if (!glue(audio_get_pdo_, TYPE)(sw->s->dev)->mixing_engine) {
 111         return 0;
 112     }
 113
 114     samples = ((int64_t) sw->HWBUF->size << 32) / sw->ratio;
 115
 116     sw->buf = audio_calloc(__func__, samples, sizeof(struct st_sample));
 117     if (!sw->buf) {
 118         dolog ("Could not allocate buffer for `%s' (%d samples)\n",
 119                SW_NAME (sw), samples);
 120         return -1;
 121     }
 122
 123 #ifdef DAC
 124     sw->rate = st_rate_start (sw->info.freq, sw->hw->info.freq);
 125 #else
 126     sw->rate = st_rate_start (sw->hw->info.freq, sw->info.freq);
 127 #endif
 128     if (!sw->rate) {
 129         g_free (sw->buf);
 130         sw->buf = NULL;
 131         return -1;
 132     }
 133     return 0;
 134 }
 135
 136 static int glue (audio_pcm_sw_init_, TYPE) (
 137     SW *sw,
 138     HW *hw,
 139     const char *name,
 140     struct audsettings *as
 141     )
 142 {
 143     int err;
 144
 145     audio_pcm_init_info (&sw->info, as);
 146     sw->hw = hw;
 147     sw->active = 0;
 148 #ifdef DAC
 149     sw->ratio = ((int64_t) sw->hw->info.freq << 32) / sw->info.freq;
 150     sw->total_hw_samples_mixed = 0;
 151     sw->empty = 1;
 152 #else
 153     sw->ratio = ((int64_t) sw->info.freq << 32) / sw->hw->info.freq;
 154 #endif
 155
 156     if (sw->info.is_float) {
 157 #ifdef DAC
 158         sw->conv = mixeng_conv_float[sw->info.nchannels == 2];
 159 #else
 160         sw->clip = mixeng_clip_float[sw->info.nchannels == 2];
 161 #endif
 162     } else {
 163 #ifdef DAC
 164         sw->conv = mixeng_conv
 165 #else
 166         sw->clip = mixeng_clip
 167 #endif
 168             [sw->info.nchannels == 2]
 169             [sw->info.is_signed]
 170             [sw->info.swap_endianness]
 171             [audio_bits_to_index(sw->info.bits)];
 172     }
 173
 174     sw->name = g_strdup (name);
 175     err = glue (audio_pcm_sw_alloc_resources_, TYPE) (sw);
 176     if (err) {
 177         g_free (sw->name);
 178         sw->name = NULL;
 179     }
 180     return err;
 181 }
 182
 183 static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw)
 184 {
 185     glue (audio_pcm_sw_free_resources_, TYPE) (sw);
 186     g_free (sw->name);
 187     sw->name = NULL;
 188 }
 189
 190 static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw)
 191 {
 192     QLIST_INSERT_HEAD (&hw->sw_head, sw, entries);
 193 }
 194
 195 static void glue (audio_pcm_hw_del_sw_, TYPE) (SW *sw)
 196 {
 197     QLIST_REMOVE (sw, entries);
 198 }
 199
 200 static void glue (audio_pcm_hw_gc_, TYPE) (HW **hwp)
 201 {
 202     HW *hw = *hwp;
 203     AudioState *s = hw->s;
 204
 205     if (!hw->sw_head.lh_first) {
 206 #ifdef DAC
 207         audio_detach_capture (hw);
 208 #endif
 209         QLIST_REMOVE (hw, entries);
 210         glue (hw->pcm_ops->fini_, TYPE) (hw);
 211         glue (s->nb_hw_voices_, TYPE) += 1;
 212         glue (audio_pcm_hw_free_resources_ ,TYPE) (hw);
 213         g_free (hw);
 214         *hwp = NULL;
 215     }
 216 }
 217
 218 static HW *glue(audio_pcm_hw_find_any_, TYPE)(AudioState *s, HW *hw)
 219 {
 220     return hw ? hw->entries.le_next : glue (s->hw_head_, TYPE).lh_first;
 221 }
 222
 223 static HW *glue(audio_pcm_hw_find_any_enabled_, TYPE)(AudioState *s, HW *hw)
 224 {
 225     while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) {
 226         if (hw->enabled) {
 227             return hw;
 228         }
 229     }
 230     return NULL;
 231 }
 232
 233 static HW *glue(audio_pcm_hw_find_specific_, TYPE)(AudioState *s, HW *hw,
 234                                                    struct audsettings *as)
 235 {
 236     while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) {
 237         if (audio_pcm_info_eq (&hw->info, as)) {
 238             return hw;
 239         }
 240     }
 241     return NULL;
 242 }
 243
 244 static HW *glue(audio_pcm_hw_add_new_, TYPE)(AudioState *s,
 245                                              struct audsettings *as)
 246 {
 247     HW *hw;
 248     struct audio_driver *drv = s->drv;
 249
 250     if (!glue (s->nb_hw_voices_, TYPE)) {
 251         return NULL;
 252     }
 253
 254     if (audio_bug(__func__, !drv)) {
 255         dolog ("No host audio driver\n");
 256         return NULL;
 257     }
 258
 259     if (audio_bug(__func__, !drv->pcm_ops)) {
 260         dolog ("Host audio driver without pcm_ops\n");
 261         return NULL;
 262     }
 263
 264     hw = audio_calloc(__func__, 1, glue(drv->voice_size_, TYPE));
 265     if (!hw) {
 266         dolog ("Can not allocate voice `%s' size %d\n",
 267                drv->name, glue (drv->voice_size_, TYPE));
 268         return NULL;
 269     }
 270
 271     hw->s = s;
 272     hw->pcm_ops = drv->pcm_ops;
 273
 274     QLIST_INIT (&hw->sw_head);
 275 #ifdef DAC
 276     QLIST_INIT (&hw->cap_head);
 277 #endif
 278     if (glue (hw->pcm_ops->init_, TYPE) (hw, as, s->drv_opaque)) {
 279         goto err0;
 280     }
 281
 282     if (audio_bug(__func__, hw->samples <= 0)) {
 283         dolog("hw->samples=%zd\n", hw->samples);
 284         goto err1;
 285     }
 286
 287     if (hw->info.is_float) {
 288 #ifdef DAC
 289         hw->clip = mixeng_clip_float[hw->info.nchannels == 2];
 290 #else
 291         hw->conv = mixeng_conv_float[hw->info.nchannels == 2];
 292 #endif
 293     } else {
 294 #ifdef DAC
 295         hw->clip = mixeng_clip
 296 #else
 297         hw->conv = mixeng_conv
 298 #endif
 299             [hw->info.nchannels == 2]
 300             [hw->info.is_signed]
 301             [hw->info.swap_endianness]
 302             [audio_bits_to_index(hw->info.bits)];
 303     }
 304
 305     glue(audio_pcm_hw_alloc_resources_, TYPE)(hw);
 306
 307     QLIST_INSERT_HEAD (&s->glue (hw_head_, TYPE), hw, entries);
 308     glue (s->nb_hw_voices_, TYPE) -= 1;
 309 #ifdef DAC
 310     audio_attach_capture (hw);
 311 #endif
 312     return hw;
 313
 314  err1:
 315     glue (hw->pcm_ops->fini_, TYPE) (hw);
 316  err0:
 317     g_free (hw);
 318     return NULL;
 319 }
 320
 321 AudiodevPerDirectionOptions *glue(audio_get_pdo_, TYPE)(Audiodev *dev)
 322 {
 323     switch (dev->driver) {
 324     case AUDIODEV_DRIVER_NONE:
 325         return dev->u.none.TYPE;
 326     case AUDIODEV_DRIVER_ALSA:
 327         return qapi_AudiodevAlsaPerDirectionOptions_base(dev->u.alsa.TYPE);
 328     case AUDIODEV_DRIVER_COREAUDIO:
 329         return qapi_AudiodevCoreaudioPerDirectionOptions_base(
 330             dev->u.coreaudio.TYPE);
 331     case AUDIODEV_DRIVER_DSOUND:
 332         return dev->u.dsound.TYPE;
 333     case AUDIODEV_DRIVER_JACK:
 334         return qapi_AudiodevJackPerDirectionOptions_base(dev->u.jack.TYPE);
 335     case AUDIODEV_DRIVER_OSS:
 336         return qapi_AudiodevOssPerDirectionOptions_base(dev->u.oss.TYPE);
 337     case AUDIODEV_DRIVER_PA:
 338         return qapi_AudiodevPaPerDirectionOptions_base(dev->u.pa.TYPE);
 339     case AUDIODEV_DRIVER_SDL:
 340         return dev->u.sdl.TYPE;
 341     case AUDIODEV_DRIVER_SPICE:
 342         return dev->u.spice.TYPE;
 343     case AUDIODEV_DRIVER_WAV:
 344         return dev->u.wav.TYPE;
 345
 346     case AUDIODEV_DRIVER__MAX:
 347         break;
 348     }
 349     abort();
 350 }
 351
 352 static HW *glue(audio_pcm_hw_add_, TYPE)(AudioState *s, struct audsettings *as)
 353 {
 354     HW *hw;
 355     AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev);
 356
 357     if (!pdo->mixing_engine || pdo->fixed_settings) {
 358         hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as);
 359         if (!pdo->mixing_engine || hw) {
 360             return hw;
 361         }
 362     }
 363
 364     hw = glue(audio_pcm_hw_find_specific_, TYPE)(s, NULL, as);
 365     if (hw) {
 366         return hw;
 367     }
 368
 369     hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as);
 370     if (hw) {
 371         return hw;
 372     }
 373
 374     return glue(audio_pcm_hw_find_any_, TYPE)(s, NULL);
 375 }
 376
 377 static SW *glue(audio_pcm_create_voice_pair_, TYPE)(
 378     AudioState *s,
 379     const char *sw_name,
 380     struct audsettings *as
 381     )
 382 {
 383     SW *sw;
 384     HW *hw;
 385     struct audsettings hw_as;
 386     AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev);
 387
 388     if (pdo->fixed_settings) {
 389         hw_as = audiodev_to_audsettings(pdo);
 390     }
 391     else {
 392         hw_as = *as;
 393     }
 394
 395     sw = audio_calloc(__func__, 1, sizeof(*sw));
 396     if (!sw) {
 397         dolog ("Could not allocate soft voice `%s' (%zu bytes)\n",
 398                sw_name ? sw_name : "unknown", sizeof (*sw));
 399         goto err1;
 400     }
 401     sw->s = s;
 402
 403     hw = glue(audio_pcm_hw_add_, TYPE)(s, &hw_as);
 404     if (!hw) {
 405         goto err2;
 406     }
 407
 408     glue (audio_pcm_hw_add_sw_, TYPE) (hw, sw);
 409
 410     if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, sw_name, as)) {
 411         goto err3;
 412     }
 413
 414     return sw;
 415
 416 err3:
 417     glue (audio_pcm_hw_del_sw_, TYPE) (sw);
 418     glue (audio_pcm_hw_gc_, TYPE) (&hw);
 419 err2:
 420     g_free (sw);
 421 err1:
 422     return NULL;
 423 }
 424
 425 static void glue (audio_close_, TYPE) (SW *sw)
 426 {
 427     glue (audio_pcm_sw_fini_, TYPE) (sw);
 428     glue (audio_pcm_hw_del_sw_, TYPE) (sw);
 429     glue (audio_pcm_hw_gc_, TYPE) (&sw->hw);
 430     g_free (sw);
 431 }
 432
 433 void glue (AUD_close_, TYPE) (QEMUSoundCard *card, SW *sw)
 434 {
 435     if (sw) {
 436         if (audio_bug(__func__, !card)) {
 437             dolog ("card=%p\n", card);
 438             return;
 439         }
 440
 441         glue (audio_close_, TYPE) (sw);
 442     }
 443 }
 444
 445 SW *glue (AUD_open_, TYPE) (
 446     QEMUSoundCard *card,
 447     SW *sw,
 448     const char *name,
 449     void *callback_opaque ,
 450     audio_callback_fn callback_fn,
 451     struct audsettings *as
 452     )
 453 {
 454     AudioState *s;
 455     AudiodevPerDirectionOptions *pdo;
 456
 457     if (audio_bug(__func__, !card || !name || !callback_fn || !as)) {
 458         dolog ("card=%p name=%p callback_fn=%p as=%p\n",
 459                card, name, callback_fn, as);
 460         goto fail;
 461     }
 462
 463     s = card->state;
 464     pdo = glue(audio_get_pdo_, TYPE)(s->dev);
 465
 466     ldebug ("open %s, freq %d, nchannels %d, fmt %d\n",
 467             name, as->freq, as->nchannels, as->fmt);
 468
 469     if (audio_bug(__func__, audio_validate_settings(as))) {
 470         audio_print_settings (as);
 471         goto fail;
 472     }
 473
 474     if (audio_bug(__func__, !s->drv)) {
 475         dolog ("Can not open `%s' (no host audio driver)\n", name);
 476         goto fail;
 477     }
 478
 479     if (sw && audio_pcm_info_eq (&sw->info, as)) {
 480         return sw;
 481     }
 482
 483     if (!pdo->fixed_settings && sw) {
 484         glue (AUD_close_, TYPE) (card, sw);
 485         sw = NULL;
 486     }
 487
 488     if (sw) {
 489         HW *hw = sw->hw;
 490
 491         if (!hw) {
 492             dolog ("Internal logic error voice `%s' has no hardware store\n",
 493                    SW_NAME (sw));
 494             goto fail;
 495         }
 496
 497         glue (audio_pcm_sw_fini_, TYPE) (sw);
 498         if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, name, as)) {
 499             goto fail;
 500         }
 501     }
 502     else {
 503         sw = glue(audio_pcm_create_voice_pair_, TYPE)(s, name, as);
 504         if (!sw) {
 505             dolog ("Failed to create voice `%s'\n", name);
 506             return NULL;
 507         }
 508     }
 509
 510     sw->card = card;
 511     sw->vol = nominal_volume;
 512     sw->callback.fn = callback_fn;
 513     sw->callback.opaque = callback_opaque;
 514
 515 #ifdef DEBUG_AUDIO
 516     dolog ("%s\n", name);
 517     audio_pcm_print_info ("hw", &sw->hw->info);
 518     audio_pcm_print_info ("sw", &sw->info);
 519 #endif
 520
 521     return sw;
 522
 523  fail:
 524     glue (AUD_close_, TYPE) (card, sw);
 525     return NULL;
 526 }
 527
 528 int glue (AUD_is_active_, TYPE) (SW *sw)
 529 {
 530     return sw ? sw->active : 0;
 531 }
 532
 533 void glue (AUD_init_time_stamp_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
 534 {
 535     if (!sw) {
 536         return;
 537     }
 538
 539     ts->old_ts = sw->hw->ts_helper;
 540 }
 541
 542 uint64_t glue (AUD_get_elapsed_usec_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
 543 {
 544     uint64_t delta, cur_ts, old_ts;
 545
 546     if (!sw) {
 547         return 0;
 548     }
 549
 550     cur_ts = sw->hw->ts_helper;
 551     old_ts = ts->old_ts;
 552     /* dolog ("cur %" PRId64 " old %" PRId64 "\n", cur_ts, old_ts); */
 553
 554     if (cur_ts >= old_ts) {
 555         delta = cur_ts - old_ts;
 556     }
 557     else {
 558         delta = UINT64_MAX - old_ts + cur_ts;
 559     }
 560
 561     if (!delta) {
 562         return 0;
 563     }
 564
 565     return muldiv64 (delta, sw->hw->info.freq, 1000000);
 566 }
 567
 568 #undef TYPE
 569 #undef HW
 570 #undef SW
 571 #undef HWBUF
 572 #undef NAME