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 samples = ((int64_t) sw->HWBUF->size << 32) / sw->ratio; 114 115 sw->buf = audio_calloc(__func__, samples, sizeof(struct st_sample)); 116 if (!sw->buf) { 117 dolog ("Could not allocate buffer for `%s' (%d samples)\n", 118 SW_NAME (sw), samples); 119 return -1; 120 } 121 122 #ifdef DAC 123 sw->rate = st_rate_start (sw->info.freq, sw->hw->info.freq); 124 #else 125 sw->rate = st_rate_start (sw->hw->info.freq, sw->info.freq); 126 #endif 127 if (!sw->rate) { 128 g_free (sw->buf); 129 sw->buf = NULL; 130 return -1; 131 } 132 return 0; 133 } 134 135 static int glue (audio_pcm_sw_init_, TYPE) ( 136 SW *sw, 137 HW *hw, 138 const char *name, 139 struct audsettings *as 140 ) 141 { 142 int err; 143 144 audio_pcm_init_info (&sw->info, as); 145 sw->hw = hw; 146 sw->active = 0; 147 #ifdef DAC 148 sw->ratio = ((int64_t) sw->hw->info.freq << 32) / sw->info.freq; 149 sw->total_hw_samples_mixed = 0; 150 sw->empty = 1; 151 #else 152 sw->ratio = ((int64_t) sw->info.freq << 32) / sw->hw->info.freq; 153 #endif 154 155 if (sw->info.is_float) { 156 #ifdef DAC 157 sw->conv = mixeng_conv_float[sw->info.nchannels == 2]; 158 #else 159 sw->clip = mixeng_clip_float[sw->info.nchannels == 2]; 160 #endif 161 } else { 162 #ifdef DAC 163 sw->conv = mixeng_conv 164 #else 165 sw->clip = mixeng_clip 166 #endif 167 [sw->info.nchannels == 2] 168 [sw->info.is_signed] 169 [sw->info.swap_endianness] 170 [audio_bits_to_index(sw->info.bits)]; 171 } 172 173 sw->name = g_strdup (name); 174 err = glue (audio_pcm_sw_alloc_resources_, TYPE) (sw); 175 if (err) { 176 g_free (sw->name); 177 sw->name = NULL; 178 } 179 return err; 180 } 181 182 static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw) 183 { 184 glue (audio_pcm_sw_free_resources_, TYPE) (sw); 185 g_free (sw->name); 186 sw->name = NULL; 187 } 188 189 static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw) 190 { 191 QLIST_INSERT_HEAD (&hw->sw_head, sw, entries); 192 } 193 194 static void glue (audio_pcm_hw_del_sw_, TYPE) (SW *sw) 195 { 196 QLIST_REMOVE (sw, entries); 197 } 198 199 static void glue (audio_pcm_hw_gc_, TYPE) (HW **hwp) 200 { 201 HW *hw = *hwp; 202 AudioState *s = hw->s; 203 204 if (!hw->sw_head.lh_first) { 205 #ifdef DAC 206 audio_detach_capture(hw); 207 #endif 208 QLIST_REMOVE(hw, entries); 209 glue(hw->pcm_ops->fini_, TYPE) (hw); 210 glue(s->nb_hw_voices_, TYPE) += 1; 211 glue(audio_pcm_hw_free_resources_ , TYPE) (hw); 212 g_free(hw); 213 *hwp = NULL; 214 } 215 } 216 217 static HW *glue(audio_pcm_hw_find_any_, TYPE)(AudioState *s, HW *hw) 218 { 219 return hw ? hw->entries.le_next : glue (s->hw_head_, TYPE).lh_first; 220 } 221 222 static HW *glue(audio_pcm_hw_find_any_enabled_, TYPE)(AudioState *s, HW *hw) 223 { 224 while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) { 225 if (hw->enabled) { 226 return hw; 227 } 228 } 229 return NULL; 230 } 231 232 static HW *glue(audio_pcm_hw_find_specific_, TYPE)(AudioState *s, HW *hw, 233 struct audsettings *as) 234 { 235 while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) { 236 if (audio_pcm_info_eq (&hw->info, as)) { 237 return hw; 238 } 239 } 240 return NULL; 241 } 242 243 static HW *glue(audio_pcm_hw_add_new_, TYPE)(AudioState *s, 244 struct audsettings *as) 245 { 246 HW *hw; 247 struct audio_driver *drv = s->drv; 248 249 if (!glue (s->nb_hw_voices_, TYPE)) { 250 return NULL; 251 } 252 253 if (audio_bug(__func__, !drv)) { 254 dolog ("No host audio driver\n"); 255 return NULL; 256 } 257 258 if (audio_bug(__func__, !drv->pcm_ops)) { 259 dolog ("Host audio driver without pcm_ops\n"); 260 return NULL; 261 } 262 263 hw = audio_calloc(__func__, 1, glue(drv->voice_size_, TYPE)); 264 if (!hw) { 265 dolog ("Can not allocate voice `%s' size %d\n", 266 drv->name, glue (drv->voice_size_, TYPE)); 267 return NULL; 268 } 269 270 hw->s = s; 271 hw->pcm_ops = drv->pcm_ops; 272 273 QLIST_INIT (&hw->sw_head); 274 #ifdef DAC 275 QLIST_INIT (&hw->cap_head); 276 #endif 277 if (glue (hw->pcm_ops->init_, TYPE) (hw, as, s->drv_opaque)) { 278 goto err0; 279 } 280 281 if (audio_bug(__func__, hw->samples <= 0)) { 282 dolog("hw->samples=%zd\n", hw->samples); 283 goto err1; 284 } 285 286 if (hw->info.is_float) { 287 #ifdef DAC 288 hw->clip = mixeng_clip_float[hw->info.nchannels == 2]; 289 #else 290 hw->conv = mixeng_conv_float[hw->info.nchannels == 2]; 291 #endif 292 } else { 293 #ifdef DAC 294 hw->clip = mixeng_clip 295 #else 296 hw->conv = mixeng_conv 297 #endif 298 [hw->info.nchannels == 2] 299 [hw->info.is_signed] 300 [hw->info.swap_endianness] 301 [audio_bits_to_index(hw->info.bits)]; 302 } 303 304 glue(audio_pcm_hw_alloc_resources_, TYPE)(hw); 305 306 QLIST_INSERT_HEAD (&s->glue (hw_head_, TYPE), hw, entries); 307 glue (s->nb_hw_voices_, TYPE) -= 1; 308 #ifdef DAC 309 audio_attach_capture (hw); 310 #endif 311 return hw; 312 313 err1: 314 glue (hw->pcm_ops->fini_, TYPE) (hw); 315 err0: 316 g_free (hw); 317 return NULL; 318 } 319 320 AudiodevPerDirectionOptions *glue(audio_get_pdo_, TYPE)(Audiodev *dev) 321 { 322 switch (dev->driver) { 323 case AUDIODEV_DRIVER_NONE: 324 return dev->u.none.TYPE; 325 case AUDIODEV_DRIVER_ALSA: 326 return qapi_AudiodevAlsaPerDirectionOptions_base(dev->u.alsa.TYPE); 327 case AUDIODEV_DRIVER_COREAUDIO: 328 return qapi_AudiodevCoreaudioPerDirectionOptions_base( 329 dev->u.coreaudio.TYPE); 330 case AUDIODEV_DRIVER_DBUS: 331 return dev->u.dbus.TYPE; 332 case AUDIODEV_DRIVER_DSOUND: 333 return dev->u.dsound.TYPE; 334 case AUDIODEV_DRIVER_JACK: 335 return qapi_AudiodevJackPerDirectionOptions_base(dev->u.jack.TYPE); 336 case AUDIODEV_DRIVER_OSS: 337 return qapi_AudiodevOssPerDirectionOptions_base(dev->u.oss.TYPE); 338 case AUDIODEV_DRIVER_PA: 339 return qapi_AudiodevPaPerDirectionOptions_base(dev->u.pa.TYPE); 340 case AUDIODEV_DRIVER_SDL: 341 return qapi_AudiodevSdlPerDirectionOptions_base(dev->u.sdl.TYPE); 342 case AUDIODEV_DRIVER_SPICE: 343 return dev->u.spice.TYPE; 344 case AUDIODEV_DRIVER_WAV: 345 return dev->u.wav.TYPE; 346 347 case AUDIODEV_DRIVER__MAX: 348 break; 349 } 350 abort(); 351 } 352 353 static HW *glue(audio_pcm_hw_add_, TYPE)(AudioState *s, struct audsettings *as) 354 { 355 HW *hw; 356 AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev); 357 358 if (!pdo->mixing_engine || pdo->fixed_settings) { 359 hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as); 360 if (!pdo->mixing_engine || hw) { 361 return hw; 362 } 363 } 364 365 hw = glue(audio_pcm_hw_find_specific_, TYPE)(s, NULL, as); 366 if (hw) { 367 return hw; 368 } 369 370 hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as); 371 if (hw) { 372 return hw; 373 } 374 375 return glue(audio_pcm_hw_find_any_, TYPE)(s, NULL); 376 } 377 378 static SW *glue(audio_pcm_create_voice_pair_, TYPE)( 379 AudioState *s, 380 const char *sw_name, 381 struct audsettings *as 382 ) 383 { 384 SW *sw; 385 HW *hw; 386 struct audsettings hw_as; 387 AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev); 388 389 if (pdo->fixed_settings) { 390 hw_as = audiodev_to_audsettings(pdo); 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 } else { 502 sw = glue(audio_pcm_create_voice_pair_, TYPE)(s, name, as); 503 if (!sw) { 504 dolog ("Failed to create voice `%s'\n", name); 505 return NULL; 506 } 507 } 508 509 sw->card = card; 510 sw->vol = nominal_volume; 511 sw->callback.fn = callback_fn; 512 sw->callback.opaque = callback_opaque; 513 514 #ifdef DEBUG_AUDIO 515 dolog ("%s\n", name); 516 audio_pcm_print_info ("hw", &sw->hw->info); 517 audio_pcm_print_info ("sw", &sw->info); 518 #endif 519 520 return sw; 521 522 fail: 523 glue (AUD_close_, TYPE) (card, sw); 524 return NULL; 525 } 526 527 int glue (AUD_is_active_, TYPE) (SW *sw) 528 { 529 return sw ? sw->active : 0; 530 } 531 532 void glue (AUD_init_time_stamp_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts) 533 { 534 if (!sw) { 535 return; 536 } 537 538 ts->old_ts = sw->hw->ts_helper; 539 } 540 541 uint64_t glue (AUD_get_elapsed_usec_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts) 542 { 543 uint64_t delta, cur_ts, old_ts; 544 545 if (!sw) { 546 return 0; 547 } 548 549 cur_ts = sw->hw->ts_helper; 550 old_ts = ts->old_ts; 551 /* dolog ("cur %" PRId64 " old %" PRId64 "\n", cur_ts, old_ts); */ 552 553 if (cur_ts >= old_ts) { 554 delta = cur_ts - old_ts; 555 } else { 556 delta = UINT64_MAX - old_ts + cur_ts; 557 } 558 559 if (!delta) { 560 return 0; 561 } 562 563 return muldiv64 (delta, sw->hw->info.freq, 1000000); 564 } 565 566 #undef TYPE 567 #undef HW 568 #undef SW 569 #undef HWBUF 570 #undef NAME 571