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 #ifdef DAC 157 sw->conv = mixeng_conv 158 #else 159 sw->clip = mixeng_clip 160 #endif 161 [sw->info.nchannels == 2] 162 [sw->info.sign] 163 [sw->info.swap_endianness] 164 [audio_bits_to_index (sw->info.bits)]; 165 166 sw->name = g_strdup (name); 167 err = glue (audio_pcm_sw_alloc_resources_, TYPE) (sw); 168 if (err) { 169 g_free (sw->name); 170 sw->name = NULL; 171 } 172 return err; 173 } 174 175 static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw) 176 { 177 glue (audio_pcm_sw_free_resources_, TYPE) (sw); 178 g_free (sw->name); 179 sw->name = NULL; 180 } 181 182 static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw) 183 { 184 QLIST_INSERT_HEAD (&hw->sw_head, sw, entries); 185 } 186 187 static void glue (audio_pcm_hw_del_sw_, TYPE) (SW *sw) 188 { 189 QLIST_REMOVE (sw, entries); 190 } 191 192 static void glue (audio_pcm_hw_gc_, TYPE) (HW **hwp) 193 { 194 HW *hw = *hwp; 195 AudioState *s = hw->s; 196 197 if (!hw->sw_head.lh_first) { 198 #ifdef DAC 199 audio_detach_capture (hw); 200 #endif 201 QLIST_REMOVE (hw, entries); 202 glue (hw->pcm_ops->fini_, TYPE) (hw); 203 glue (s->nb_hw_voices_, TYPE) += 1; 204 glue (audio_pcm_hw_free_resources_ ,TYPE) (hw); 205 g_free (hw); 206 *hwp = NULL; 207 } 208 } 209 210 static HW *glue(audio_pcm_hw_find_any_, TYPE)(AudioState *s, HW *hw) 211 { 212 return hw ? hw->entries.le_next : glue (s->hw_head_, TYPE).lh_first; 213 } 214 215 static HW *glue(audio_pcm_hw_find_any_enabled_, TYPE)(AudioState *s, HW *hw) 216 { 217 while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) { 218 if (hw->enabled) { 219 return hw; 220 } 221 } 222 return NULL; 223 } 224 225 static HW *glue(audio_pcm_hw_find_specific_, TYPE)(AudioState *s, HW *hw, 226 struct audsettings *as) 227 { 228 while ((hw = glue(audio_pcm_hw_find_any_, TYPE)(s, hw))) { 229 if (audio_pcm_info_eq (&hw->info, as)) { 230 return hw; 231 } 232 } 233 return NULL; 234 } 235 236 static HW *glue(audio_pcm_hw_add_new_, TYPE)(AudioState *s, 237 struct audsettings *as) 238 { 239 HW *hw; 240 struct audio_driver *drv = s->drv; 241 242 if (!glue (s->nb_hw_voices_, TYPE)) { 243 return NULL; 244 } 245 246 if (audio_bug(__func__, !drv)) { 247 dolog ("No host audio driver\n"); 248 return NULL; 249 } 250 251 if (audio_bug(__func__, !drv->pcm_ops)) { 252 dolog ("Host audio driver without pcm_ops\n"); 253 return NULL; 254 } 255 256 hw = audio_calloc(__func__, 1, glue(drv->voice_size_, TYPE)); 257 if (!hw) { 258 dolog ("Can not allocate voice `%s' size %d\n", 259 drv->name, glue (drv->voice_size_, TYPE)); 260 return NULL; 261 } 262 263 hw->s = s; 264 hw->pcm_ops = drv->pcm_ops; 265 266 QLIST_INIT (&hw->sw_head); 267 #ifdef DAC 268 QLIST_INIT (&hw->cap_head); 269 #endif 270 if (glue (hw->pcm_ops->init_, TYPE) (hw, as, s->drv_opaque)) { 271 goto err0; 272 } 273 274 if (audio_bug(__func__, hw->samples <= 0)) { 275 dolog("hw->samples=%zd\n", hw->samples); 276 goto err1; 277 } 278 279 #ifdef DAC 280 hw->clip = mixeng_clip 281 #else 282 hw->conv = mixeng_conv 283 #endif 284 [hw->info.nchannels == 2] 285 [hw->info.sign] 286 [hw->info.swap_endianness] 287 [audio_bits_to_index (hw->info.bits)]; 288 289 glue(audio_pcm_hw_alloc_resources_, TYPE)(hw); 290 291 QLIST_INSERT_HEAD (&s->glue (hw_head_, TYPE), hw, entries); 292 glue (s->nb_hw_voices_, TYPE) -= 1; 293 #ifdef DAC 294 audio_attach_capture (hw); 295 #endif 296 return hw; 297 298 err1: 299 glue (hw->pcm_ops->fini_, TYPE) (hw); 300 err0: 301 g_free (hw); 302 return NULL; 303 } 304 305 AudiodevPerDirectionOptions *glue(audio_get_pdo_, TYPE)(Audiodev *dev) 306 { 307 switch (dev->driver) { 308 case AUDIODEV_DRIVER_NONE: 309 return dev->u.none.TYPE; 310 case AUDIODEV_DRIVER_ALSA: 311 return qapi_AudiodevAlsaPerDirectionOptions_base(dev->u.alsa.TYPE); 312 case AUDIODEV_DRIVER_COREAUDIO: 313 return qapi_AudiodevCoreaudioPerDirectionOptions_base( 314 dev->u.coreaudio.TYPE); 315 case AUDIODEV_DRIVER_DSOUND: 316 return dev->u.dsound.TYPE; 317 case AUDIODEV_DRIVER_OSS: 318 return qapi_AudiodevOssPerDirectionOptions_base(dev->u.oss.TYPE); 319 case AUDIODEV_DRIVER_PA: 320 return qapi_AudiodevPaPerDirectionOptions_base(dev->u.pa.TYPE); 321 case AUDIODEV_DRIVER_SDL: 322 return dev->u.sdl.TYPE; 323 case AUDIODEV_DRIVER_SPICE: 324 return dev->u.spice.TYPE; 325 case AUDIODEV_DRIVER_WAV: 326 return dev->u.wav.TYPE; 327 328 case AUDIODEV_DRIVER__MAX: 329 break; 330 } 331 abort(); 332 } 333 334 static HW *glue(audio_pcm_hw_add_, TYPE)(AudioState *s, struct audsettings *as) 335 { 336 HW *hw; 337 AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev); 338 339 if (!pdo->mixing_engine || pdo->fixed_settings) { 340 hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as); 341 if (!pdo->mixing_engine || hw) { 342 return hw; 343 } 344 } 345 346 hw = glue(audio_pcm_hw_find_specific_, TYPE)(s, NULL, as); 347 if (hw) { 348 return hw; 349 } 350 351 hw = glue(audio_pcm_hw_add_new_, TYPE)(s, as); 352 if (hw) { 353 return hw; 354 } 355 356 return glue(audio_pcm_hw_find_any_, TYPE)(s, NULL); 357 } 358 359 static SW *glue(audio_pcm_create_voice_pair_, TYPE)( 360 AudioState *s, 361 const char *sw_name, 362 struct audsettings *as 363 ) 364 { 365 SW *sw; 366 HW *hw; 367 struct audsettings hw_as; 368 AudiodevPerDirectionOptions *pdo = glue(audio_get_pdo_, TYPE)(s->dev); 369 370 if (pdo->fixed_settings) { 371 hw_as = audiodev_to_audsettings(pdo); 372 } 373 else { 374 hw_as = *as; 375 } 376 377 sw = audio_calloc(__func__, 1, sizeof(*sw)); 378 if (!sw) { 379 dolog ("Could not allocate soft voice `%s' (%zu bytes)\n", 380 sw_name ? sw_name : "unknown", sizeof (*sw)); 381 goto err1; 382 } 383 sw->s = s; 384 385 hw = glue(audio_pcm_hw_add_, TYPE)(s, &hw_as); 386 if (!hw) { 387 goto err2; 388 } 389 390 glue (audio_pcm_hw_add_sw_, TYPE) (hw, sw); 391 392 if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, sw_name, as)) { 393 goto err3; 394 } 395 396 return sw; 397 398 err3: 399 glue (audio_pcm_hw_del_sw_, TYPE) (sw); 400 glue (audio_pcm_hw_gc_, TYPE) (&hw); 401 err2: 402 g_free (sw); 403 err1: 404 return NULL; 405 } 406 407 static void glue (audio_close_, TYPE) (SW *sw) 408 { 409 glue (audio_pcm_sw_fini_, TYPE) (sw); 410 glue (audio_pcm_hw_del_sw_, TYPE) (sw); 411 glue (audio_pcm_hw_gc_, TYPE) (&sw->hw); 412 g_free (sw); 413 } 414 415 void glue (AUD_close_, TYPE) (QEMUSoundCard *card, SW *sw) 416 { 417 if (sw) { 418 if (audio_bug(__func__, !card)) { 419 dolog ("card=%p\n", card); 420 return; 421 } 422 423 glue (audio_close_, TYPE) (sw); 424 } 425 } 426 427 SW *glue (AUD_open_, TYPE) ( 428 QEMUSoundCard *card, 429 SW *sw, 430 const char *name, 431 void *callback_opaque , 432 audio_callback_fn callback_fn, 433 struct audsettings *as 434 ) 435 { 436 AudioState *s; 437 AudiodevPerDirectionOptions *pdo; 438 439 if (audio_bug(__func__, !card || !name || !callback_fn || !as)) { 440 dolog ("card=%p name=%p callback_fn=%p as=%p\n", 441 card, name, callback_fn, as); 442 goto fail; 443 } 444 445 s = card->state; 446 pdo = glue(audio_get_pdo_, TYPE)(s->dev); 447 448 ldebug ("open %s, freq %d, nchannels %d, fmt %d\n", 449 name, as->freq, as->nchannels, as->fmt); 450 451 if (audio_bug(__func__, audio_validate_settings(as))) { 452 audio_print_settings (as); 453 goto fail; 454 } 455 456 if (audio_bug(__func__, !s->drv)) { 457 dolog ("Can not open `%s' (no host audio driver)\n", name); 458 goto fail; 459 } 460 461 if (sw && audio_pcm_info_eq (&sw->info, as)) { 462 return sw; 463 } 464 465 if (!pdo->fixed_settings && sw) { 466 glue (AUD_close_, TYPE) (card, sw); 467 sw = NULL; 468 } 469 470 if (sw) { 471 HW *hw = sw->hw; 472 473 if (!hw) { 474 dolog ("Internal logic error voice `%s' has no hardware store\n", 475 SW_NAME (sw)); 476 goto fail; 477 } 478 479 glue (audio_pcm_sw_fini_, TYPE) (sw); 480 if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, name, as)) { 481 goto fail; 482 } 483 } 484 else { 485 sw = glue(audio_pcm_create_voice_pair_, TYPE)(s, name, as); 486 if (!sw) { 487 dolog ("Failed to create voice `%s'\n", name); 488 return NULL; 489 } 490 } 491 492 sw->card = card; 493 sw->vol = nominal_volume; 494 sw->callback.fn = callback_fn; 495 sw->callback.opaque = callback_opaque; 496 497 #ifdef DEBUG_AUDIO 498 dolog ("%s\n", name); 499 audio_pcm_print_info ("hw", &sw->hw->info); 500 audio_pcm_print_info ("sw", &sw->info); 501 #endif 502 503 return sw; 504 505 fail: 506 glue (AUD_close_, TYPE) (card, sw); 507 return NULL; 508 } 509 510 int glue (AUD_is_active_, TYPE) (SW *sw) 511 { 512 return sw ? sw->active : 0; 513 } 514 515 void glue (AUD_init_time_stamp_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts) 516 { 517 if (!sw) { 518 return; 519 } 520 521 ts->old_ts = sw->hw->ts_helper; 522 } 523 524 uint64_t glue (AUD_get_elapsed_usec_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts) 525 { 526 uint64_t delta, cur_ts, old_ts; 527 528 if (!sw) { 529 return 0; 530 } 531 532 cur_ts = sw->hw->ts_helper; 533 old_ts = ts->old_ts; 534 /* dolog ("cur %" PRId64 " old %" PRId64 "\n", cur_ts, old_ts); */ 535 536 if (cur_ts >= old_ts) { 537 delta = cur_ts - old_ts; 538 } 539 else { 540 delta = UINT64_MAX - old_ts + cur_ts; 541 } 542 543 if (!delta) { 544 return 0; 545 } 546 547 return muldiv64 (delta, sw->hw->info.freq, 1000000); 548 } 549 550 #undef TYPE 551 #undef HW 552 #undef SW 553 #undef HWBUF 554 #undef NAME 555