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 } else { 51 dolog ("Driver `%s' does not support %d " NAME " voices, max %d\n", 52 drv->name, 53 glue (s->nb_hw_voices_, TYPE), 54 max_voices); 55 } 56 glue (s->nb_hw_voices_, TYPE) = max_voices; 57 } 58 59 if (audio_bug(__func__, !voice_size && max_voices)) { 60 dolog ("drv=`%s' voice_size=0 max_voices=%d\n", 61 drv->name, max_voices); 62 glue (s->nb_hw_voices_, TYPE) = 0; 63 } 64 65 if (audio_bug(__func__, voice_size && !max_voices)) { 66 dolog ("drv=`%s' voice_size=%d max_voices=0\n", 67 drv->name, voice_size); 68 } 69 } 70 71 static void glue (audio_pcm_hw_free_resources_, TYPE) (HW *hw) 72 { 73 g_free(hw->buf_emul); 74 g_free (HWBUF); 75 HWBUF = NULL; 76 } 77 78 static void glue(audio_pcm_hw_alloc_resources_, TYPE)(HW *hw) 79 { 80 if (glue(audio_get_pdo_, TYPE)(hw->s->dev)->mixing_engine) { 81 size_t samples = hw->samples; 82 if (audio_bug(__func__, samples == 0)) { 83 dolog("Attempted to allocate empty buffer\n"); 84 } 85 86 HWBUF = g_malloc0(sizeof(STSampleBuffer) + sizeof(st_sample) * samples); 87 HWBUF->size = samples; 88 } else { 89 HWBUF = NULL; 90 } 91 } 92 93 static void glue (audio_pcm_sw_free_resources_, TYPE) (SW *sw) 94 { 95 g_free (sw->buf); 96 97 if (sw->rate) { 98 st_rate_stop (sw->rate); 99 } 100 101 sw->buf = NULL; 102 sw->rate = NULL; 103 } 104 105 static int glue (audio_pcm_sw_alloc_resources_, TYPE) (SW *sw) 106 { 107 int samples; 108 109 if (!glue(audio_get_pdo_, TYPE)(sw->s->dev)->mixing_engine) { 110 return 0; 111 } 112 113 #ifdef DAC 114 samples = ((int64_t) sw->HWBUF->size << 32) / sw->ratio; 115 #else 116 samples = (int64_t)sw->HWBUF->size * sw->ratio >> 32; 117 #endif 118 119 sw->buf = audio_calloc(__func__, samples, sizeof(struct st_sample)); 120 if (!sw->buf) { 121 dolog ("Could not allocate buffer for `%s' (%d samples)\n", 122 SW_NAME (sw), samples); 123 return -1; 124 } 125 126 #ifdef DAC 127 sw->rate = st_rate_start (sw->info.freq, sw->hw->info.freq); 128 #else 129 sw->rate = st_rate_start (sw->hw->info.freq, sw->info.freq); 130 #endif 131 if (!sw->rate) { 132 g_free (sw->buf); 133 sw->buf = NULL; 134 return -1; 135 } 136 return 0; 137 } 138 139 static int glue (audio_pcm_sw_init_, TYPE) ( 140 SW *sw, 141 HW *hw, 142 const char *name, 143 struct audsettings *as 144 ) 145 { 146 int err; 147 148 audio_pcm_init_info (&sw->info, as); 149 sw->hw = hw; 150 sw->active = 0; 151 #ifdef DAC 152 sw->ratio = ((int64_t) sw->hw->info.freq << 32) / sw->info.freq; 153 sw->total_hw_samples_mixed = 0; 154 sw->empty = 1; 155 #else 156 sw->ratio = ((int64_t) sw->info.freq << 32) / sw->hw->info.freq; 157 #endif 158 159 if (sw->info.is_float) { 160 #ifdef DAC 161 sw->conv = mixeng_conv_float[sw->info.nchannels == 2]; 162 #else 163 sw->clip = mixeng_clip_float[sw->info.nchannels == 2]; 164 #endif 165 } else { 166 #ifdef DAC 167 sw->conv = mixeng_conv 168 #else 169 sw->clip = mixeng_clip 170 #endif 171 [sw->info.nchannels == 2] 172 [sw->info.is_signed] 173 [sw->info.swap_endianness] 174 [audio_bits_to_index(sw->info.bits)]; 175 } 176 177 sw->name = g_strdup (name); 178 err = glue (audio_pcm_sw_alloc_resources_, TYPE) (sw); 179 if (err) { 180 g_free (sw->name); 181 sw->name = NULL; 182 } 183 return err; 184 } 185 186 static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw) 187 { 188 glue (audio_pcm_sw_free_resources_, TYPE) (sw); 189 g_free (sw->name); 190 sw->name = NULL; 191 } 192 193 static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw) 194 { 195 QLIST_INSERT_HEAD (&hw->sw_head, sw, entries); 196 } 197 198 static void glue (audio_pcm_hw_del_sw_, TYPE) (SW *sw) 199 { 200 QLIST_REMOVE (sw, entries); 201 } 202 203 static void glue (audio_pcm_hw_gc_, TYPE) (HW **hwp) 204 { 205 HW *hw = *hwp; 206 AudioState *s = hw->s; 207 208 if (!hw->sw_head.lh_first) { 209 #ifdef DAC 210 audio_detach_capture(hw); 211 #endif 212 QLIST_REMOVE(hw, entries); 213 glue(hw->pcm_ops->fini_, TYPE) (hw); 214 glue(s->nb_hw_voices_, TYPE) += 1; 215 glue(audio_pcm_hw_free_resources_ , TYPE) (hw); 216 g_free(hw); 217 *hwp = NULL; 218 } 219 } 220 221 static HW *glue(audio_pcm_hw_find_any_, TYPE)(AudioState *s, HW *hw) 222 { 223 return hw ? hw->entries.le_next : glue (s->hw_head_, TYPE).lh_first; 224 } 225 226 static HW *glue(audio_pcm_hw_find_any_enabled_, TYPE)(AudioState *s, HW *hw) 227 { 228 while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) { 229 if (hw->enabled) { 230 return hw; 231 } 232 } 233 return NULL; 234 } 235 236 static HW *glue(audio_pcm_hw_find_specific_, TYPE)(AudioState *s, HW *hw, 237 struct audsettings *as) 238 { 239 while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) { 240 if (audio_pcm_info_eq (&hw->info, as)) { 241 return hw; 242 } 243 } 244 return NULL; 245 } 246 247 static HW *glue(audio_pcm_hw_add_new_, TYPE)(AudioState *s, 248 struct audsettings *as) 249 { 250 HW *hw; 251 struct audio_driver *drv = s->drv; 252 253 if (!glue (s->nb_hw_voices_, TYPE)) { 254 return NULL; 255 } 256 257 if (audio_bug(__func__, !drv)) { 258 dolog ("No host audio driver\n"); 259 return NULL; 260 } 261 262 if (audio_bug(__func__, !drv->pcm_ops)) { 263 dolog ("Host audio driver without pcm_ops\n"); 264 return NULL; 265 } 266 267 hw = audio_calloc(__func__, 1, glue(drv->voice_size_, TYPE)); 268 if (!hw) { 269 dolog ("Can not allocate voice `%s' size %d\n", 270 drv->name, glue (drv->voice_size_, TYPE)); 271 return NULL; 272 } 273 274 hw->s = s; 275 hw->pcm_ops = drv->pcm_ops; 276 277 QLIST_INIT (&hw->sw_head); 278 #ifdef DAC 279 QLIST_INIT (&hw->cap_head); 280 #endif 281 if (glue (hw->pcm_ops->init_, TYPE) (hw, as, s->drv_opaque)) { 282 goto err0; 283 } 284 285 if (audio_bug(__func__, hw->samples <= 0)) { 286 dolog("hw->samples=%zd\n", hw->samples); 287 goto err1; 288 } 289 290 if (hw->info.is_float) { 291 #ifdef DAC 292 hw->clip = mixeng_clip_float[hw->info.nchannels == 2]; 293 #else 294 hw->conv = mixeng_conv_float[hw->info.nchannels == 2]; 295 #endif 296 } else { 297 #ifdef DAC 298 hw->clip = mixeng_clip 299 #else 300 hw->conv = mixeng_conv 301 #endif 302 [hw->info.nchannels == 2] 303 [hw->info.is_signed] 304 [hw->info.swap_endianness] 305 [audio_bits_to_index(hw->info.bits)]; 306 } 307 308 glue(audio_pcm_hw_alloc_resources_, TYPE)(hw); 309 310 QLIST_INSERT_HEAD (&s->glue (hw_head_, TYPE), hw, entries); 311 glue (s->nb_hw_voices_, TYPE) -= 1; 312 #ifdef DAC 313 audio_attach_capture (hw); 314 #endif 315 return hw; 316 317 err1: 318 glue (hw->pcm_ops->fini_, TYPE) (hw); 319 err0: 320 g_free (hw); 321 return NULL; 322 } 323 324 AudiodevPerDirectionOptions *glue(audio_get_pdo_, TYPE)(Audiodev *dev) 325 { 326 switch (dev->driver) { 327 case AUDIODEV_DRIVER_NONE: 328 return dev->u.none.TYPE; 329 case AUDIODEV_DRIVER_ALSA: 330 return qapi_AudiodevAlsaPerDirectionOptions_base(dev->u.alsa.TYPE); 331 case AUDIODEV_DRIVER_COREAUDIO: 332 return qapi_AudiodevCoreaudioPerDirectionOptions_base( 333 dev->u.coreaudio.TYPE); 334 case AUDIODEV_DRIVER_DBUS: 335 return dev->u.dbus.TYPE; 336 case AUDIODEV_DRIVER_DSOUND: 337 return dev->u.dsound.TYPE; 338 case AUDIODEV_DRIVER_JACK: 339 return qapi_AudiodevJackPerDirectionOptions_base(dev->u.jack.TYPE); 340 case AUDIODEV_DRIVER_OSS: 341 return qapi_AudiodevOssPerDirectionOptions_base(dev->u.oss.TYPE); 342 case AUDIODEV_DRIVER_PA: 343 return qapi_AudiodevPaPerDirectionOptions_base(dev->u.pa.TYPE); 344 case AUDIODEV_DRIVER_SDL: 345 return qapi_AudiodevSdlPerDirectionOptions_base(dev->u.sdl.TYPE); 346 case AUDIODEV_DRIVER_SNDIO: 347 return dev->u.sndio.TYPE; 348 case AUDIODEV_DRIVER_SPICE: 349 return dev->u.spice.TYPE; 350 case AUDIODEV_DRIVER_WAV: 351 return dev->u.wav.TYPE; 352 353 case AUDIODEV_DRIVER__MAX: 354 break; 355 } 356 abort(); 357 } 358 359 static HW *glue(audio_pcm_hw_add_, TYPE)(AudioState *s, struct audsettings *as) 360 { 361 HW *hw; 362 AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev); 363 364 if (!pdo->mixing_engine || pdo->fixed_settings) { 365 hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as); 366 if (!pdo->mixing_engine || hw) { 367 return hw; 368 } 369 } 370 371 hw = glue(audio_pcm_hw_find_specific_, TYPE)(s, NULL, as); 372 if (hw) { 373 return hw; 374 } 375 376 hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as); 377 if (hw) { 378 return hw; 379 } 380 381 return glue(audio_pcm_hw_find_any_, TYPE)(s, NULL); 382 } 383 384 static SW *glue(audio_pcm_create_voice_pair_, TYPE)( 385 AudioState *s, 386 const char *sw_name, 387 struct audsettings *as 388 ) 389 { 390 SW *sw; 391 HW *hw; 392 struct audsettings hw_as; 393 AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev); 394 395 if (pdo->fixed_settings) { 396 hw_as = audiodev_to_audsettings(pdo); 397 } else { 398 hw_as = *as; 399 } 400 401 sw = audio_calloc(__func__, 1, sizeof(*sw)); 402 if (!sw) { 403 dolog ("Could not allocate soft voice `%s' (%zu bytes)\n", 404 sw_name ? sw_name : "unknown", sizeof (*sw)); 405 goto err1; 406 } 407 sw->s = s; 408 409 hw = glue(audio_pcm_hw_add_, TYPE)(s, &hw_as); 410 if (!hw) { 411 goto err2; 412 } 413 414 glue (audio_pcm_hw_add_sw_, TYPE) (hw, sw); 415 416 if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, sw_name, as)) { 417 goto err3; 418 } 419 420 return sw; 421 422 err3: 423 glue (audio_pcm_hw_del_sw_, TYPE) (sw); 424 glue (audio_pcm_hw_gc_, TYPE) (&hw); 425 err2: 426 g_free (sw); 427 err1: 428 return NULL; 429 } 430 431 static void glue (audio_close_, TYPE) (SW *sw) 432 { 433 glue (audio_pcm_sw_fini_, TYPE) (sw); 434 glue (audio_pcm_hw_del_sw_, TYPE) (sw); 435 glue (audio_pcm_hw_gc_, TYPE) (&sw->hw); 436 g_free (sw); 437 } 438 439 void glue (AUD_close_, TYPE) (QEMUSoundCard *card, SW *sw) 440 { 441 if (sw) { 442 if (audio_bug(__func__, !card)) { 443 dolog ("card=%p\n", card); 444 return; 445 } 446 447 glue (audio_close_, TYPE) (sw); 448 } 449 } 450 451 SW *glue (AUD_open_, TYPE) ( 452 QEMUSoundCard *card, 453 SW *sw, 454 const char *name, 455 void *callback_opaque , 456 audio_callback_fn callback_fn, 457 struct audsettings *as 458 ) 459 { 460 AudioState *s; 461 AudiodevPerDirectionOptions *pdo; 462 463 if (audio_bug(__func__, !card || !name || !callback_fn || !as)) { 464 dolog ("card=%p name=%p callback_fn=%p as=%p\n", 465 card, name, callback_fn, as); 466 goto fail; 467 } 468 469 s = card->state; 470 pdo = glue(audio_get_pdo_, TYPE)(s->dev); 471 472 ldebug ("open %s, freq %d, nchannels %d, fmt %d\n", 473 name, as->freq, as->nchannels, as->fmt); 474 475 if (audio_bug(__func__, audio_validate_settings(as))) { 476 audio_print_settings (as); 477 goto fail; 478 } 479 480 if (audio_bug(__func__, !s->drv)) { 481 dolog ("Can not open `%s' (no host audio driver)\n", name); 482 goto fail; 483 } 484 485 if (sw && audio_pcm_info_eq (&sw->info, as)) { 486 return sw; 487 } 488 489 if (!pdo->fixed_settings && sw) { 490 glue (AUD_close_, TYPE) (card, sw); 491 sw = NULL; 492 } 493 494 if (sw) { 495 HW *hw = sw->hw; 496 497 if (!hw) { 498 dolog ("Internal logic error voice `%s' has no hardware store\n", 499 SW_NAME (sw)); 500 goto fail; 501 } 502 503 glue (audio_pcm_sw_fini_, TYPE) (sw); 504 if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, name, as)) { 505 goto fail; 506 } 507 } else { 508 sw = glue(audio_pcm_create_voice_pair_, TYPE)(s, name, as); 509 if (!sw) { 510 dolog ("Failed to create voice `%s'\n", name); 511 return NULL; 512 } 513 } 514 515 sw->card = card; 516 sw->vol = nominal_volume; 517 sw->callback.fn = callback_fn; 518 sw->callback.opaque = callback_opaque; 519 520 #ifdef DEBUG_AUDIO 521 dolog ("%s\n", name); 522 audio_pcm_print_info ("hw", &sw->hw->info); 523 audio_pcm_print_info ("sw", &sw->info); 524 #endif 525 526 return sw; 527 528 fail: 529 glue (AUD_close_, TYPE) (card, sw); 530 return NULL; 531 } 532 533 int glue (AUD_is_active_, TYPE) (SW *sw) 534 { 535 return sw ? sw->active : 0; 536 } 537 538 void glue (AUD_init_time_stamp_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts) 539 { 540 if (!sw) { 541 return; 542 } 543 544 ts->old_ts = sw->hw->ts_helper; 545 } 546 547 uint64_t glue (AUD_get_elapsed_usec_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts) 548 { 549 uint64_t delta, cur_ts, old_ts; 550 551 if (!sw) { 552 return 0; 553 } 554 555 cur_ts = sw->hw->ts_helper; 556 old_ts = ts->old_ts; 557 /* dolog ("cur %" PRId64 " old %" PRId64 "\n", cur_ts, old_ts); */ 558 559 if (cur_ts >= old_ts) { 560 delta = cur_ts - old_ts; 561 } else { 562 delta = UINT64_MAX - old_ts + cur_ts; 563 } 564 565 if (!delta) { 566 return 0; 567 } 568 569 return muldiv64 (delta, sw->hw->info.freq, 1000000); 570 } 571 572 #undef TYPE 573 #undef HW 574 #undef SW 575 #undef HWBUF 576 #undef NAME 577