1 /* 2 * QEMU Audio subsystem 3 * 4 * Copyright (c) 2003-2005 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 #include "hw/hw.h" 25 #include "audio.h" 26 #include "monitor/monitor.h" 27 #include "qemu/timer.h" 28 #include "sysemu/sysemu.h" 29 30 #define AUDIO_CAP "audio" 31 #include "audio_int.h" 32 33 /* #define DEBUG_PLIVE */ 34 /* #define DEBUG_LIVE */ 35 /* #define DEBUG_OUT */ 36 /* #define DEBUG_CAPTURE */ 37 /* #define DEBUG_POLL */ 38 39 #define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown" 40 41 42 /* Order of CONFIG_AUDIO_DRIVERS is import. 43 The 1st one is the one used by default, that is the reason 44 that we generate the list. 45 */ 46 static struct audio_driver *drvtab[] = { 47 #ifdef CONFIG_SPICE 48 &spice_audio_driver, 49 #endif 50 CONFIG_AUDIO_DRIVERS 51 &no_audio_driver, 52 &wav_audio_driver 53 }; 54 55 struct fixed_settings { 56 int enabled; 57 int nb_voices; 58 int greedy; 59 struct audsettings settings; 60 }; 61 62 static struct { 63 struct fixed_settings fixed_out; 64 struct fixed_settings fixed_in; 65 union { 66 int hertz; 67 int64_t ticks; 68 } period; 69 int plive; 70 int log_to_monitor; 71 int try_poll_in; 72 int try_poll_out; 73 } conf = { 74 .fixed_out = { /* DAC fixed settings */ 75 .enabled = 1, 76 .nb_voices = 1, 77 .greedy = 1, 78 .settings = { 79 .freq = 44100, 80 .nchannels = 2, 81 .fmt = AUD_FMT_S16, 82 .endianness = AUDIO_HOST_ENDIANNESS, 83 } 84 }, 85 86 .fixed_in = { /* ADC fixed settings */ 87 .enabled = 1, 88 .nb_voices = 1, 89 .greedy = 1, 90 .settings = { 91 .freq = 44100, 92 .nchannels = 2, 93 .fmt = AUD_FMT_S16, 94 .endianness = AUDIO_HOST_ENDIANNESS, 95 } 96 }, 97 98 .period = { .hertz = 250 }, 99 .plive = 0, 100 .log_to_monitor = 0, 101 .try_poll_in = 1, 102 .try_poll_out = 1, 103 }; 104 105 static AudioState glob_audio_state; 106 107 const struct mixeng_volume nominal_volume = { 108 .mute = 0, 109 #ifdef FLOAT_MIXENG 110 .r = 1.0, 111 .l = 1.0, 112 #else 113 .r = 1ULL << 32, 114 .l = 1ULL << 32, 115 #endif 116 }; 117 118 #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED 119 #error No its not 120 #else 121 static void audio_print_options (const char *prefix, 122 struct audio_option *opt); 123 124 int audio_bug (const char *funcname, int cond) 125 { 126 if (cond) { 127 static int shown; 128 129 AUD_log (NULL, "A bug was just triggered in %s\n", funcname); 130 if (!shown) { 131 struct audio_driver *d; 132 133 shown = 1; 134 AUD_log (NULL, "Save all your work and restart without audio\n"); 135 AUD_log (NULL, "Please send bug report to av1474@comtv.ru\n"); 136 AUD_log (NULL, "I am sorry\n"); 137 d = glob_audio_state.drv; 138 if (d) { 139 audio_print_options (d->name, d->options); 140 } 141 } 142 AUD_log (NULL, "Context:\n"); 143 144 #if defined AUDIO_BREAKPOINT_ON_BUG 145 # if defined HOST_I386 146 # if defined __GNUC__ 147 __asm__ ("int3"); 148 # elif defined _MSC_VER 149 _asm _emit 0xcc; 150 # else 151 abort (); 152 # endif 153 # else 154 abort (); 155 # endif 156 #endif 157 } 158 159 return cond; 160 } 161 #endif 162 163 static inline int audio_bits_to_index (int bits) 164 { 165 switch (bits) { 166 case 8: 167 return 0; 168 169 case 16: 170 return 1; 171 172 case 32: 173 return 2; 174 175 default: 176 audio_bug ("bits_to_index", 1); 177 AUD_log (NULL, "invalid bits %d\n", bits); 178 return 0; 179 } 180 } 181 182 void *audio_calloc (const char *funcname, int nmemb, size_t size) 183 { 184 int cond; 185 size_t len; 186 187 len = nmemb * size; 188 cond = !nmemb || !size; 189 cond |= nmemb < 0; 190 cond |= len < size; 191 192 if (audio_bug ("audio_calloc", cond)) { 193 AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n", 194 funcname); 195 AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len); 196 return NULL; 197 } 198 199 return g_malloc0 (len); 200 } 201 202 static char *audio_alloc_prefix (const char *s) 203 { 204 const char qemu_prefix[] = "QEMU_"; 205 size_t len, i; 206 char *r, *u; 207 208 if (!s) { 209 return NULL; 210 } 211 212 len = strlen (s); 213 r = g_malloc (len + sizeof (qemu_prefix)); 214 215 u = r + sizeof (qemu_prefix) - 1; 216 217 pstrcpy (r, len + sizeof (qemu_prefix), qemu_prefix); 218 pstrcat (r, len + sizeof (qemu_prefix), s); 219 220 for (i = 0; i < len; ++i) { 221 u[i] = qemu_toupper(u[i]); 222 } 223 224 return r; 225 } 226 227 static const char *audio_audfmt_to_string (audfmt_e fmt) 228 { 229 switch (fmt) { 230 case AUD_FMT_U8: 231 return "U8"; 232 233 case AUD_FMT_U16: 234 return "U16"; 235 236 case AUD_FMT_S8: 237 return "S8"; 238 239 case AUD_FMT_S16: 240 return "S16"; 241 242 case AUD_FMT_U32: 243 return "U32"; 244 245 case AUD_FMT_S32: 246 return "S32"; 247 } 248 249 dolog ("Bogus audfmt %d returning S16\n", fmt); 250 return "S16"; 251 } 252 253 static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval, 254 int *defaultp) 255 { 256 if (!strcasecmp (s, "u8")) { 257 *defaultp = 0; 258 return AUD_FMT_U8; 259 } 260 else if (!strcasecmp (s, "u16")) { 261 *defaultp = 0; 262 return AUD_FMT_U16; 263 } 264 else if (!strcasecmp (s, "u32")) { 265 *defaultp = 0; 266 return AUD_FMT_U32; 267 } 268 else if (!strcasecmp (s, "s8")) { 269 *defaultp = 0; 270 return AUD_FMT_S8; 271 } 272 else if (!strcasecmp (s, "s16")) { 273 *defaultp = 0; 274 return AUD_FMT_S16; 275 } 276 else if (!strcasecmp (s, "s32")) { 277 *defaultp = 0; 278 return AUD_FMT_S32; 279 } 280 else { 281 dolog ("Bogus audio format `%s' using %s\n", 282 s, audio_audfmt_to_string (defval)); 283 *defaultp = 1; 284 return defval; 285 } 286 } 287 288 static audfmt_e audio_get_conf_fmt (const char *envname, 289 audfmt_e defval, 290 int *defaultp) 291 { 292 const char *var = getenv (envname); 293 if (!var) { 294 *defaultp = 1; 295 return defval; 296 } 297 return audio_string_to_audfmt (var, defval, defaultp); 298 } 299 300 static int audio_get_conf_int (const char *key, int defval, int *defaultp) 301 { 302 int val; 303 char *strval; 304 305 strval = getenv (key); 306 if (strval) { 307 *defaultp = 0; 308 val = atoi (strval); 309 return val; 310 } 311 else { 312 *defaultp = 1; 313 return defval; 314 } 315 } 316 317 static const char *audio_get_conf_str (const char *key, 318 const char *defval, 319 int *defaultp) 320 { 321 const char *val = getenv (key); 322 if (!val) { 323 *defaultp = 1; 324 return defval; 325 } 326 else { 327 *defaultp = 0; 328 return val; 329 } 330 } 331 332 void AUD_vlog (const char *cap, const char *fmt, va_list ap) 333 { 334 if (conf.log_to_monitor) { 335 if (cap) { 336 monitor_printf(default_mon, "%s: ", cap); 337 } 338 339 monitor_vprintf(default_mon, fmt, ap); 340 } 341 else { 342 if (cap) { 343 fprintf (stderr, "%s: ", cap); 344 } 345 346 vfprintf (stderr, fmt, ap); 347 } 348 } 349 350 void AUD_log (const char *cap, const char *fmt, ...) 351 { 352 va_list ap; 353 354 va_start (ap, fmt); 355 AUD_vlog (cap, fmt, ap); 356 va_end (ap); 357 } 358 359 static void audio_print_options (const char *prefix, 360 struct audio_option *opt) 361 { 362 char *uprefix; 363 364 if (!prefix) { 365 dolog ("No prefix specified\n"); 366 return; 367 } 368 369 if (!opt) { 370 dolog ("No options\n"); 371 return; 372 } 373 374 uprefix = audio_alloc_prefix (prefix); 375 376 for (; opt->name; opt++) { 377 const char *state = "default"; 378 printf (" %s_%s: ", uprefix, opt->name); 379 380 if (opt->overriddenp && *opt->overriddenp) { 381 state = "current"; 382 } 383 384 switch (opt->tag) { 385 case AUD_OPT_BOOL: 386 { 387 int *intp = opt->valp; 388 printf ("boolean, %s = %d\n", state, *intp ? 1 : 0); 389 } 390 break; 391 392 case AUD_OPT_INT: 393 { 394 int *intp = opt->valp; 395 printf ("integer, %s = %d\n", state, *intp); 396 } 397 break; 398 399 case AUD_OPT_FMT: 400 { 401 audfmt_e *fmtp = opt->valp; 402 printf ( 403 "format, %s = %s, (one of: U8 S8 U16 S16 U32 S32)\n", 404 state, 405 audio_audfmt_to_string (*fmtp) 406 ); 407 } 408 break; 409 410 case AUD_OPT_STR: 411 { 412 const char **strp = opt->valp; 413 printf ("string, %s = %s\n", 414 state, 415 *strp ? *strp : "(not set)"); 416 } 417 break; 418 419 default: 420 printf ("???\n"); 421 dolog ("Bad value tag for option %s_%s %d\n", 422 uprefix, opt->name, opt->tag); 423 break; 424 } 425 printf (" %s\n", opt->descr); 426 } 427 428 g_free (uprefix); 429 } 430 431 static void audio_process_options (const char *prefix, 432 struct audio_option *opt) 433 { 434 char *optname; 435 const char qemu_prefix[] = "QEMU_"; 436 size_t preflen, optlen; 437 438 if (audio_bug (AUDIO_FUNC, !prefix)) { 439 dolog ("prefix = NULL\n"); 440 return; 441 } 442 443 if (audio_bug (AUDIO_FUNC, !opt)) { 444 dolog ("opt = NULL\n"); 445 return; 446 } 447 448 preflen = strlen (prefix); 449 450 for (; opt->name; opt++) { 451 size_t len, i; 452 int def; 453 454 if (!opt->valp) { 455 dolog ("Option value pointer for `%s' is not set\n", 456 opt->name); 457 continue; 458 } 459 460 len = strlen (opt->name); 461 /* len of opt->name + len of prefix + size of qemu_prefix 462 * (includes trailing zero) + zero + underscore (on behalf of 463 * sizeof) */ 464 optlen = len + preflen + sizeof (qemu_prefix) + 1; 465 optname = g_malloc (optlen); 466 467 pstrcpy (optname, optlen, qemu_prefix); 468 469 /* copy while upper-casing, including trailing zero */ 470 for (i = 0; i <= preflen; ++i) { 471 optname[i + sizeof (qemu_prefix) - 1] = qemu_toupper(prefix[i]); 472 } 473 pstrcat (optname, optlen, "_"); 474 pstrcat (optname, optlen, opt->name); 475 476 def = 1; 477 switch (opt->tag) { 478 case AUD_OPT_BOOL: 479 case AUD_OPT_INT: 480 { 481 int *intp = opt->valp; 482 *intp = audio_get_conf_int (optname, *intp, &def); 483 } 484 break; 485 486 case AUD_OPT_FMT: 487 { 488 audfmt_e *fmtp = opt->valp; 489 *fmtp = audio_get_conf_fmt (optname, *fmtp, &def); 490 } 491 break; 492 493 case AUD_OPT_STR: 494 { 495 const char **strp = opt->valp; 496 *strp = audio_get_conf_str (optname, *strp, &def); 497 } 498 break; 499 500 default: 501 dolog ("Bad value tag for option `%s' - %d\n", 502 optname, opt->tag); 503 break; 504 } 505 506 if (!opt->overriddenp) { 507 opt->overriddenp = &opt->overridden; 508 } 509 *opt->overriddenp = !def; 510 g_free (optname); 511 } 512 } 513 514 static void audio_print_settings (struct audsettings *as) 515 { 516 dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels); 517 518 switch (as->fmt) { 519 case AUD_FMT_S8: 520 AUD_log (NULL, "S8"); 521 break; 522 case AUD_FMT_U8: 523 AUD_log (NULL, "U8"); 524 break; 525 case AUD_FMT_S16: 526 AUD_log (NULL, "S16"); 527 break; 528 case AUD_FMT_U16: 529 AUD_log (NULL, "U16"); 530 break; 531 case AUD_FMT_S32: 532 AUD_log (NULL, "S32"); 533 break; 534 case AUD_FMT_U32: 535 AUD_log (NULL, "U32"); 536 break; 537 default: 538 AUD_log (NULL, "invalid(%d)", as->fmt); 539 break; 540 } 541 542 AUD_log (NULL, " endianness="); 543 switch (as->endianness) { 544 case 0: 545 AUD_log (NULL, "little"); 546 break; 547 case 1: 548 AUD_log (NULL, "big"); 549 break; 550 default: 551 AUD_log (NULL, "invalid"); 552 break; 553 } 554 AUD_log (NULL, "\n"); 555 } 556 557 static int audio_validate_settings (struct audsettings *as) 558 { 559 int invalid; 560 561 invalid = as->nchannels != 1 && as->nchannels != 2; 562 invalid |= as->endianness != 0 && as->endianness != 1; 563 564 switch (as->fmt) { 565 case AUD_FMT_S8: 566 case AUD_FMT_U8: 567 case AUD_FMT_S16: 568 case AUD_FMT_U16: 569 case AUD_FMT_S32: 570 case AUD_FMT_U32: 571 break; 572 default: 573 invalid = 1; 574 break; 575 } 576 577 invalid |= as->freq <= 0; 578 return invalid ? -1 : 0; 579 } 580 581 static int audio_pcm_info_eq (struct audio_pcm_info *info, struct audsettings *as) 582 { 583 int bits = 8, sign = 0; 584 585 switch (as->fmt) { 586 case AUD_FMT_S8: 587 sign = 1; 588 /* fall through */ 589 case AUD_FMT_U8: 590 break; 591 592 case AUD_FMT_S16: 593 sign = 1; 594 /* fall through */ 595 case AUD_FMT_U16: 596 bits = 16; 597 break; 598 599 case AUD_FMT_S32: 600 sign = 1; 601 /* fall through */ 602 case AUD_FMT_U32: 603 bits = 32; 604 break; 605 } 606 return info->freq == as->freq 607 && info->nchannels == as->nchannels 608 && info->sign == sign 609 && info->bits == bits 610 && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS); 611 } 612 613 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as) 614 { 615 int bits = 8, sign = 0, shift = 0; 616 617 switch (as->fmt) { 618 case AUD_FMT_S8: 619 sign = 1; 620 case AUD_FMT_U8: 621 break; 622 623 case AUD_FMT_S16: 624 sign = 1; 625 case AUD_FMT_U16: 626 bits = 16; 627 shift = 1; 628 break; 629 630 case AUD_FMT_S32: 631 sign = 1; 632 case AUD_FMT_U32: 633 bits = 32; 634 shift = 2; 635 break; 636 } 637 638 info->freq = as->freq; 639 info->bits = bits; 640 info->sign = sign; 641 info->nchannels = as->nchannels; 642 info->shift = (as->nchannels == 2) + shift; 643 info->align = (1 << info->shift) - 1; 644 info->bytes_per_second = info->freq << info->shift; 645 info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS); 646 } 647 648 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len) 649 { 650 if (!len) { 651 return; 652 } 653 654 if (info->sign) { 655 memset (buf, 0x00, len << info->shift); 656 } 657 else { 658 switch (info->bits) { 659 case 8: 660 memset (buf, 0x80, len << info->shift); 661 break; 662 663 case 16: 664 { 665 int i; 666 uint16_t *p = buf; 667 int shift = info->nchannels - 1; 668 short s = INT16_MAX; 669 670 if (info->swap_endianness) { 671 s = bswap16 (s); 672 } 673 674 for (i = 0; i < len << shift; i++) { 675 p[i] = s; 676 } 677 } 678 break; 679 680 case 32: 681 { 682 int i; 683 uint32_t *p = buf; 684 int shift = info->nchannels - 1; 685 int32_t s = INT32_MAX; 686 687 if (info->swap_endianness) { 688 s = bswap32 (s); 689 } 690 691 for (i = 0; i < len << shift; i++) { 692 p[i] = s; 693 } 694 } 695 break; 696 697 default: 698 AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n", 699 info->bits); 700 break; 701 } 702 } 703 } 704 705 /* 706 * Capture 707 */ 708 static void noop_conv (struct st_sample *dst, const void *src, int samples) 709 { 710 (void) src; 711 (void) dst; 712 (void) samples; 713 } 714 715 static CaptureVoiceOut *audio_pcm_capture_find_specific ( 716 struct audsettings *as 717 ) 718 { 719 CaptureVoiceOut *cap; 720 AudioState *s = &glob_audio_state; 721 722 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { 723 if (audio_pcm_info_eq (&cap->hw.info, as)) { 724 return cap; 725 } 726 } 727 return NULL; 728 } 729 730 static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd) 731 { 732 struct capture_callback *cb; 733 734 #ifdef DEBUG_CAPTURE 735 dolog ("notification %d sent\n", cmd); 736 #endif 737 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { 738 cb->ops.notify (cb->opaque, cmd); 739 } 740 } 741 742 static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled) 743 { 744 if (cap->hw.enabled != enabled) { 745 audcnotification_e cmd; 746 cap->hw.enabled = enabled; 747 cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE; 748 audio_notify_capture (cap, cmd); 749 } 750 } 751 752 static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap) 753 { 754 HWVoiceOut *hw = &cap->hw; 755 SWVoiceOut *sw; 756 int enabled = 0; 757 758 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 759 if (sw->active) { 760 enabled = 1; 761 break; 762 } 763 } 764 audio_capture_maybe_changed (cap, enabled); 765 } 766 767 static void audio_detach_capture (HWVoiceOut *hw) 768 { 769 SWVoiceCap *sc = hw->cap_head.lh_first; 770 771 while (sc) { 772 SWVoiceCap *sc1 = sc->entries.le_next; 773 SWVoiceOut *sw = &sc->sw; 774 CaptureVoiceOut *cap = sc->cap; 775 int was_active = sw->active; 776 777 if (sw->rate) { 778 st_rate_stop (sw->rate); 779 sw->rate = NULL; 780 } 781 782 QLIST_REMOVE (sw, entries); 783 QLIST_REMOVE (sc, entries); 784 g_free (sc); 785 if (was_active) { 786 /* We have removed soft voice from the capture: 787 this might have changed the overall status of the capture 788 since this might have been the only active voice */ 789 audio_recalc_and_notify_capture (cap); 790 } 791 sc = sc1; 792 } 793 } 794 795 static int audio_attach_capture (HWVoiceOut *hw) 796 { 797 AudioState *s = &glob_audio_state; 798 CaptureVoiceOut *cap; 799 800 audio_detach_capture (hw); 801 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { 802 SWVoiceCap *sc; 803 SWVoiceOut *sw; 804 HWVoiceOut *hw_cap = &cap->hw; 805 806 sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc)); 807 if (!sc) { 808 dolog ("Could not allocate soft capture voice (%zu bytes)\n", 809 sizeof (*sc)); 810 return -1; 811 } 812 813 sc->cap = cap; 814 sw = &sc->sw; 815 sw->hw = hw_cap; 816 sw->info = hw->info; 817 sw->empty = 1; 818 sw->active = hw->enabled; 819 sw->conv = noop_conv; 820 sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq; 821 sw->vol = nominal_volume; 822 sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq); 823 if (!sw->rate) { 824 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw)); 825 g_free (sw); 826 return -1; 827 } 828 QLIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries); 829 QLIST_INSERT_HEAD (&hw->cap_head, sc, entries); 830 #ifdef DEBUG_CAPTURE 831 asprintf (&sw->name, "for %p %d,%d,%d", 832 hw, sw->info.freq, sw->info.bits, sw->info.nchannels); 833 dolog ("Added %s active = %d\n", sw->name, sw->active); 834 #endif 835 if (sw->active) { 836 audio_capture_maybe_changed (cap, 1); 837 } 838 } 839 return 0; 840 } 841 842 /* 843 * Hard voice (capture) 844 */ 845 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw) 846 { 847 SWVoiceIn *sw; 848 int m = hw->total_samples_captured; 849 850 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 851 if (sw->active) { 852 m = audio_MIN (m, sw->total_hw_samples_acquired); 853 } 854 } 855 return m; 856 } 857 858 int audio_pcm_hw_get_live_in (HWVoiceIn *hw) 859 { 860 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw); 861 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { 862 dolog ("live=%d hw->samples=%d\n", live, hw->samples); 863 return 0; 864 } 865 return live; 866 } 867 868 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf, 869 int live, int pending) 870 { 871 int left = hw->samples - pending; 872 int len = audio_MIN (left, live); 873 int clipped = 0; 874 875 while (len) { 876 struct st_sample *src = hw->mix_buf + hw->rpos; 877 uint8_t *dst = advance (pcm_buf, hw->rpos << hw->info.shift); 878 int samples_till_end_of_buf = hw->samples - hw->rpos; 879 int samples_to_clip = audio_MIN (len, samples_till_end_of_buf); 880 881 hw->clip (dst, src, samples_to_clip); 882 883 hw->rpos = (hw->rpos + samples_to_clip) % hw->samples; 884 len -= samples_to_clip; 885 clipped += samples_to_clip; 886 } 887 return clipped; 888 } 889 890 /* 891 * Soft voice (capture) 892 */ 893 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw) 894 { 895 HWVoiceIn *hw = sw->hw; 896 int live = hw->total_samples_captured - sw->total_hw_samples_acquired; 897 int rpos; 898 899 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { 900 dolog ("live=%d hw->samples=%d\n", live, hw->samples); 901 return 0; 902 } 903 904 rpos = hw->wpos - live; 905 if (rpos >= 0) { 906 return rpos; 907 } 908 else { 909 return hw->samples + rpos; 910 } 911 } 912 913 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size) 914 { 915 HWVoiceIn *hw = sw->hw; 916 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0; 917 struct st_sample *src, *dst = sw->buf; 918 919 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples; 920 921 live = hw->total_samples_captured - sw->total_hw_samples_acquired; 922 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { 923 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples); 924 return 0; 925 } 926 927 samples = size >> sw->info.shift; 928 if (!live) { 929 return 0; 930 } 931 932 swlim = (live * sw->ratio) >> 32; 933 swlim = audio_MIN (swlim, samples); 934 935 while (swlim) { 936 src = hw->conv_buf + rpos; 937 isamp = hw->wpos - rpos; 938 /* XXX: <= ? */ 939 if (isamp <= 0) { 940 isamp = hw->samples - rpos; 941 } 942 943 if (!isamp) { 944 break; 945 } 946 osamp = swlim; 947 948 if (audio_bug (AUDIO_FUNC, osamp < 0)) { 949 dolog ("osamp=%d\n", osamp); 950 return 0; 951 } 952 953 st_rate_flow (sw->rate, src, dst, &isamp, &osamp); 954 swlim -= osamp; 955 rpos = (rpos + isamp) % hw->samples; 956 dst += osamp; 957 ret += osamp; 958 total += isamp; 959 } 960 961 if (!(hw->ctl_caps & VOICE_VOLUME_CAP)) { 962 mixeng_volume (sw->buf, ret, &sw->vol); 963 } 964 965 sw->clip (buf, sw->buf, ret); 966 sw->total_hw_samples_acquired += total; 967 return ret << sw->info.shift; 968 } 969 970 /* 971 * Hard voice (playback) 972 */ 973 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep) 974 { 975 SWVoiceOut *sw; 976 int m = INT_MAX; 977 int nb_live = 0; 978 979 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 980 if (sw->active || !sw->empty) { 981 m = audio_MIN (m, sw->total_hw_samples_mixed); 982 nb_live += 1; 983 } 984 } 985 986 *nb_livep = nb_live; 987 return m; 988 } 989 990 static int audio_pcm_hw_get_live_out (HWVoiceOut *hw, int *nb_live) 991 { 992 int smin; 993 int nb_live1; 994 995 smin = audio_pcm_hw_find_min_out (hw, &nb_live1); 996 if (nb_live) { 997 *nb_live = nb_live1; 998 } 999 1000 if (nb_live1) { 1001 int live = smin; 1002 1003 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { 1004 dolog ("live=%d hw->samples=%d\n", live, hw->samples); 1005 return 0; 1006 } 1007 return live; 1008 } 1009 return 0; 1010 } 1011 1012 /* 1013 * Soft voice (playback) 1014 */ 1015 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size) 1016 { 1017 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck; 1018 int ret = 0, pos = 0, total = 0; 1019 1020 if (!sw) { 1021 return size; 1022 } 1023 1024 hwsamples = sw->hw->samples; 1025 1026 live = sw->total_hw_samples_mixed; 1027 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){ 1028 dolog ("live=%d hw->samples=%d\n", live, hwsamples); 1029 return 0; 1030 } 1031 1032 if (live == hwsamples) { 1033 #ifdef DEBUG_OUT 1034 dolog ("%s is full %d\n", sw->name, live); 1035 #endif 1036 return 0; 1037 } 1038 1039 wpos = (sw->hw->rpos + live) % hwsamples; 1040 samples = size >> sw->info.shift; 1041 1042 dead = hwsamples - live; 1043 swlim = ((int64_t) dead << 32) / sw->ratio; 1044 swlim = audio_MIN (swlim, samples); 1045 if (swlim) { 1046 sw->conv (sw->buf, buf, swlim); 1047 1048 if (!(sw->hw->ctl_caps & VOICE_VOLUME_CAP)) { 1049 mixeng_volume (sw->buf, swlim, &sw->vol); 1050 } 1051 } 1052 1053 while (swlim) { 1054 dead = hwsamples - live; 1055 left = hwsamples - wpos; 1056 blck = audio_MIN (dead, left); 1057 if (!blck) { 1058 break; 1059 } 1060 isamp = swlim; 1061 osamp = blck; 1062 st_rate_flow_mix ( 1063 sw->rate, 1064 sw->buf + pos, 1065 sw->hw->mix_buf + wpos, 1066 &isamp, 1067 &osamp 1068 ); 1069 ret += isamp; 1070 swlim -= isamp; 1071 pos += isamp; 1072 live += osamp; 1073 wpos = (wpos + osamp) % hwsamples; 1074 total += osamp; 1075 } 1076 1077 sw->total_hw_samples_mixed += total; 1078 sw->empty = sw->total_hw_samples_mixed == 0; 1079 1080 #ifdef DEBUG_OUT 1081 dolog ( 1082 "%s: write size %d ret %d total sw %d\n", 1083 SW_NAME (sw), 1084 size >> sw->info.shift, 1085 ret, 1086 sw->total_hw_samples_mixed 1087 ); 1088 #endif 1089 1090 return ret << sw->info.shift; 1091 } 1092 1093 #ifdef DEBUG_AUDIO 1094 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info) 1095 { 1096 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n", 1097 cap, info->bits, info->sign, info->freq, info->nchannels); 1098 } 1099 #endif 1100 1101 #define DAC 1102 #include "audio_template.h" 1103 #undef DAC 1104 #include "audio_template.h" 1105 1106 /* 1107 * Timer 1108 */ 1109 static int audio_is_timer_needed (void) 1110 { 1111 HWVoiceIn *hwi = NULL; 1112 HWVoiceOut *hwo = NULL; 1113 1114 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) { 1115 if (!hwo->poll_mode) return 1; 1116 } 1117 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) { 1118 if (!hwi->poll_mode) return 1; 1119 } 1120 return 0; 1121 } 1122 1123 static void audio_reset_timer (AudioState *s) 1124 { 1125 if (audio_is_timer_needed ()) { 1126 qemu_mod_timer (s->ts, qemu_get_clock_ns (vm_clock) + 1); 1127 } 1128 else { 1129 qemu_del_timer (s->ts); 1130 } 1131 } 1132 1133 static void audio_timer (void *opaque) 1134 { 1135 audio_run ("timer"); 1136 audio_reset_timer (opaque); 1137 } 1138 1139 /* 1140 * Public API 1141 */ 1142 int AUD_write (SWVoiceOut *sw, void *buf, int size) 1143 { 1144 int bytes; 1145 1146 if (!sw) { 1147 /* XXX: Consider options */ 1148 return size; 1149 } 1150 1151 if (!sw->hw->enabled) { 1152 dolog ("Writing to disabled voice %s\n", SW_NAME (sw)); 1153 return 0; 1154 } 1155 1156 bytes = sw->hw->pcm_ops->write (sw, buf, size); 1157 return bytes; 1158 } 1159 1160 int AUD_read (SWVoiceIn *sw, void *buf, int size) 1161 { 1162 int bytes; 1163 1164 if (!sw) { 1165 /* XXX: Consider options */ 1166 return size; 1167 } 1168 1169 if (!sw->hw->enabled) { 1170 dolog ("Reading from disabled voice %s\n", SW_NAME (sw)); 1171 return 0; 1172 } 1173 1174 bytes = sw->hw->pcm_ops->read (sw, buf, size); 1175 return bytes; 1176 } 1177 1178 int AUD_get_buffer_size_out (SWVoiceOut *sw) 1179 { 1180 return sw->hw->samples << sw->hw->info.shift; 1181 } 1182 1183 void AUD_set_active_out (SWVoiceOut *sw, int on) 1184 { 1185 HWVoiceOut *hw; 1186 1187 if (!sw) { 1188 return; 1189 } 1190 1191 hw = sw->hw; 1192 if (sw->active != on) { 1193 AudioState *s = &glob_audio_state; 1194 SWVoiceOut *temp_sw; 1195 SWVoiceCap *sc; 1196 1197 if (on) { 1198 hw->pending_disable = 0; 1199 if (!hw->enabled) { 1200 hw->enabled = 1; 1201 if (s->vm_running) { 1202 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE, conf.try_poll_out); 1203 audio_reset_timer (s); 1204 } 1205 } 1206 } 1207 else { 1208 if (hw->enabled) { 1209 int nb_active = 0; 1210 1211 for (temp_sw = hw->sw_head.lh_first; temp_sw; 1212 temp_sw = temp_sw->entries.le_next) { 1213 nb_active += temp_sw->active != 0; 1214 } 1215 1216 hw->pending_disable = nb_active == 1; 1217 } 1218 } 1219 1220 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { 1221 sc->sw.active = hw->enabled; 1222 if (hw->enabled) { 1223 audio_capture_maybe_changed (sc->cap, 1); 1224 } 1225 } 1226 sw->active = on; 1227 } 1228 } 1229 1230 void AUD_set_active_in (SWVoiceIn *sw, int on) 1231 { 1232 HWVoiceIn *hw; 1233 1234 if (!sw) { 1235 return; 1236 } 1237 1238 hw = sw->hw; 1239 if (sw->active != on) { 1240 AudioState *s = &glob_audio_state; 1241 SWVoiceIn *temp_sw; 1242 1243 if (on) { 1244 if (!hw->enabled) { 1245 hw->enabled = 1; 1246 if (s->vm_running) { 1247 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE, conf.try_poll_in); 1248 audio_reset_timer (s); 1249 } 1250 } 1251 sw->total_hw_samples_acquired = hw->total_samples_captured; 1252 } 1253 else { 1254 if (hw->enabled) { 1255 int nb_active = 0; 1256 1257 for (temp_sw = hw->sw_head.lh_first; temp_sw; 1258 temp_sw = temp_sw->entries.le_next) { 1259 nb_active += temp_sw->active != 0; 1260 } 1261 1262 if (nb_active == 1) { 1263 hw->enabled = 0; 1264 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE); 1265 } 1266 } 1267 } 1268 sw->active = on; 1269 } 1270 } 1271 1272 static int audio_get_avail (SWVoiceIn *sw) 1273 { 1274 int live; 1275 1276 if (!sw) { 1277 return 0; 1278 } 1279 1280 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired; 1281 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) { 1282 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples); 1283 return 0; 1284 } 1285 1286 ldebug ( 1287 "%s: get_avail live %d ret %" PRId64 "\n", 1288 SW_NAME (sw), 1289 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift 1290 ); 1291 1292 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift; 1293 } 1294 1295 static int audio_get_free (SWVoiceOut *sw) 1296 { 1297 int live, dead; 1298 1299 if (!sw) { 1300 return 0; 1301 } 1302 1303 live = sw->total_hw_samples_mixed; 1304 1305 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) { 1306 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples); 1307 return 0; 1308 } 1309 1310 dead = sw->hw->samples - live; 1311 1312 #ifdef DEBUG_OUT 1313 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n", 1314 SW_NAME (sw), 1315 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift); 1316 #endif 1317 1318 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift; 1319 } 1320 1321 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples) 1322 { 1323 int n; 1324 1325 if (hw->enabled) { 1326 SWVoiceCap *sc; 1327 1328 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { 1329 SWVoiceOut *sw = &sc->sw; 1330 int rpos2 = rpos; 1331 1332 n = samples; 1333 while (n) { 1334 int till_end_of_hw = hw->samples - rpos2; 1335 int to_write = audio_MIN (till_end_of_hw, n); 1336 int bytes = to_write << hw->info.shift; 1337 int written; 1338 1339 sw->buf = hw->mix_buf + rpos2; 1340 written = audio_pcm_sw_write (sw, NULL, bytes); 1341 if (written - bytes) { 1342 dolog ("Could not mix %d bytes into a capture " 1343 "buffer, mixed %d\n", 1344 bytes, written); 1345 break; 1346 } 1347 n -= to_write; 1348 rpos2 = (rpos2 + to_write) % hw->samples; 1349 } 1350 } 1351 } 1352 1353 n = audio_MIN (samples, hw->samples - rpos); 1354 mixeng_clear (hw->mix_buf + rpos, n); 1355 mixeng_clear (hw->mix_buf, samples - n); 1356 } 1357 1358 static void audio_run_out (AudioState *s) 1359 { 1360 HWVoiceOut *hw = NULL; 1361 SWVoiceOut *sw; 1362 1363 while ((hw = audio_pcm_hw_find_any_enabled_out (hw))) { 1364 int played; 1365 int live, free, nb_live, cleanup_required, prev_rpos; 1366 1367 live = audio_pcm_hw_get_live_out (hw, &nb_live); 1368 if (!nb_live) { 1369 live = 0; 1370 } 1371 1372 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { 1373 dolog ("live=%d hw->samples=%d\n", live, hw->samples); 1374 continue; 1375 } 1376 1377 if (hw->pending_disable && !nb_live) { 1378 SWVoiceCap *sc; 1379 #ifdef DEBUG_OUT 1380 dolog ("Disabling voice\n"); 1381 #endif 1382 hw->enabled = 0; 1383 hw->pending_disable = 0; 1384 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE); 1385 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { 1386 sc->sw.active = 0; 1387 audio_recalc_and_notify_capture (sc->cap); 1388 } 1389 continue; 1390 } 1391 1392 if (!live) { 1393 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 1394 if (sw->active) { 1395 free = audio_get_free (sw); 1396 if (free > 0) { 1397 sw->callback.fn (sw->callback.opaque, free); 1398 } 1399 } 1400 } 1401 continue; 1402 } 1403 1404 prev_rpos = hw->rpos; 1405 played = hw->pcm_ops->run_out (hw, live); 1406 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) { 1407 dolog ("hw->rpos=%d hw->samples=%d played=%d\n", 1408 hw->rpos, hw->samples, played); 1409 hw->rpos = 0; 1410 } 1411 1412 #ifdef DEBUG_OUT 1413 dolog ("played=%d\n", played); 1414 #endif 1415 1416 if (played) { 1417 hw->ts_helper += played; 1418 audio_capture_mix_and_clear (hw, prev_rpos, played); 1419 } 1420 1421 cleanup_required = 0; 1422 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 1423 if (!sw->active && sw->empty) { 1424 continue; 1425 } 1426 1427 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) { 1428 dolog ("played=%d sw->total_hw_samples_mixed=%d\n", 1429 played, sw->total_hw_samples_mixed); 1430 played = sw->total_hw_samples_mixed; 1431 } 1432 1433 sw->total_hw_samples_mixed -= played; 1434 1435 if (!sw->total_hw_samples_mixed) { 1436 sw->empty = 1; 1437 cleanup_required |= !sw->active && !sw->callback.fn; 1438 } 1439 1440 if (sw->active) { 1441 free = audio_get_free (sw); 1442 if (free > 0) { 1443 sw->callback.fn (sw->callback.opaque, free); 1444 } 1445 } 1446 } 1447 1448 if (cleanup_required) { 1449 SWVoiceOut *sw1; 1450 1451 sw = hw->sw_head.lh_first; 1452 while (sw) { 1453 sw1 = sw->entries.le_next; 1454 if (!sw->active && !sw->callback.fn) { 1455 #ifdef DEBUG_PLIVE 1456 dolog ("Finishing with old voice\n"); 1457 #endif 1458 audio_close_out (sw); 1459 } 1460 sw = sw1; 1461 } 1462 } 1463 } 1464 } 1465 1466 static void audio_run_in (AudioState *s) 1467 { 1468 HWVoiceIn *hw = NULL; 1469 1470 while ((hw = audio_pcm_hw_find_any_enabled_in (hw))) { 1471 SWVoiceIn *sw; 1472 int captured, min; 1473 1474 captured = hw->pcm_ops->run_in (hw); 1475 1476 min = audio_pcm_hw_find_min_in (hw); 1477 hw->total_samples_captured += captured - min; 1478 hw->ts_helper += captured; 1479 1480 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 1481 sw->total_hw_samples_acquired -= min; 1482 1483 if (sw->active) { 1484 int avail; 1485 1486 avail = audio_get_avail (sw); 1487 if (avail > 0) { 1488 sw->callback.fn (sw->callback.opaque, avail); 1489 } 1490 } 1491 } 1492 } 1493 } 1494 1495 static void audio_run_capture (AudioState *s) 1496 { 1497 CaptureVoiceOut *cap; 1498 1499 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { 1500 int live, rpos, captured; 1501 HWVoiceOut *hw = &cap->hw; 1502 SWVoiceOut *sw; 1503 1504 captured = live = audio_pcm_hw_get_live_out (hw, NULL); 1505 rpos = hw->rpos; 1506 while (live) { 1507 int left = hw->samples - rpos; 1508 int to_capture = audio_MIN (live, left); 1509 struct st_sample *src; 1510 struct capture_callback *cb; 1511 1512 src = hw->mix_buf + rpos; 1513 hw->clip (cap->buf, src, to_capture); 1514 mixeng_clear (src, to_capture); 1515 1516 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { 1517 cb->ops.capture (cb->opaque, cap->buf, 1518 to_capture << hw->info.shift); 1519 } 1520 rpos = (rpos + to_capture) % hw->samples; 1521 live -= to_capture; 1522 } 1523 hw->rpos = rpos; 1524 1525 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 1526 if (!sw->active && sw->empty) { 1527 continue; 1528 } 1529 1530 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) { 1531 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n", 1532 captured, sw->total_hw_samples_mixed); 1533 captured = sw->total_hw_samples_mixed; 1534 } 1535 1536 sw->total_hw_samples_mixed -= captured; 1537 sw->empty = sw->total_hw_samples_mixed == 0; 1538 } 1539 } 1540 } 1541 1542 void audio_run (const char *msg) 1543 { 1544 AudioState *s = &glob_audio_state; 1545 1546 audio_run_out (s); 1547 audio_run_in (s); 1548 audio_run_capture (s); 1549 #ifdef DEBUG_POLL 1550 { 1551 static double prevtime; 1552 double currtime; 1553 struct timeval tv; 1554 1555 if (gettimeofday (&tv, NULL)) { 1556 perror ("audio_run: gettimeofday"); 1557 return; 1558 } 1559 1560 currtime = tv.tv_sec + tv.tv_usec * 1e-6; 1561 dolog ("Elapsed since last %s: %f\n", msg, currtime - prevtime); 1562 prevtime = currtime; 1563 } 1564 #endif 1565 } 1566 1567 static struct audio_option audio_options[] = { 1568 /* DAC */ 1569 { 1570 .name = "DAC_FIXED_SETTINGS", 1571 .tag = AUD_OPT_BOOL, 1572 .valp = &conf.fixed_out.enabled, 1573 .descr = "Use fixed settings for host DAC" 1574 }, 1575 { 1576 .name = "DAC_FIXED_FREQ", 1577 .tag = AUD_OPT_INT, 1578 .valp = &conf.fixed_out.settings.freq, 1579 .descr = "Frequency for fixed host DAC" 1580 }, 1581 { 1582 .name = "DAC_FIXED_FMT", 1583 .tag = AUD_OPT_FMT, 1584 .valp = &conf.fixed_out.settings.fmt, 1585 .descr = "Format for fixed host DAC" 1586 }, 1587 { 1588 .name = "DAC_FIXED_CHANNELS", 1589 .tag = AUD_OPT_INT, 1590 .valp = &conf.fixed_out.settings.nchannels, 1591 .descr = "Number of channels for fixed DAC (1 - mono, 2 - stereo)" 1592 }, 1593 { 1594 .name = "DAC_VOICES", 1595 .tag = AUD_OPT_INT, 1596 .valp = &conf.fixed_out.nb_voices, 1597 .descr = "Number of voices for DAC" 1598 }, 1599 { 1600 .name = "DAC_TRY_POLL", 1601 .tag = AUD_OPT_BOOL, 1602 .valp = &conf.try_poll_out, 1603 .descr = "Attempt using poll mode for DAC" 1604 }, 1605 /* ADC */ 1606 { 1607 .name = "ADC_FIXED_SETTINGS", 1608 .tag = AUD_OPT_BOOL, 1609 .valp = &conf.fixed_in.enabled, 1610 .descr = "Use fixed settings for host ADC" 1611 }, 1612 { 1613 .name = "ADC_FIXED_FREQ", 1614 .tag = AUD_OPT_INT, 1615 .valp = &conf.fixed_in.settings.freq, 1616 .descr = "Frequency for fixed host ADC" 1617 }, 1618 { 1619 .name = "ADC_FIXED_FMT", 1620 .tag = AUD_OPT_FMT, 1621 .valp = &conf.fixed_in.settings.fmt, 1622 .descr = "Format for fixed host ADC" 1623 }, 1624 { 1625 .name = "ADC_FIXED_CHANNELS", 1626 .tag = AUD_OPT_INT, 1627 .valp = &conf.fixed_in.settings.nchannels, 1628 .descr = "Number of channels for fixed ADC (1 - mono, 2 - stereo)" 1629 }, 1630 { 1631 .name = "ADC_VOICES", 1632 .tag = AUD_OPT_INT, 1633 .valp = &conf.fixed_in.nb_voices, 1634 .descr = "Number of voices for ADC" 1635 }, 1636 { 1637 .name = "ADC_TRY_POLL", 1638 .tag = AUD_OPT_BOOL, 1639 .valp = &conf.try_poll_in, 1640 .descr = "Attempt using poll mode for ADC" 1641 }, 1642 /* Misc */ 1643 { 1644 .name = "TIMER_PERIOD", 1645 .tag = AUD_OPT_INT, 1646 .valp = &conf.period.hertz, 1647 .descr = "Timer period in HZ (0 - use lowest possible)" 1648 }, 1649 { 1650 .name = "PLIVE", 1651 .tag = AUD_OPT_BOOL, 1652 .valp = &conf.plive, 1653 .descr = "(undocumented)" 1654 }, 1655 { 1656 .name = "LOG_TO_MONITOR", 1657 .tag = AUD_OPT_BOOL, 1658 .valp = &conf.log_to_monitor, 1659 .descr = "Print logging messages to monitor instead of stderr" 1660 }, 1661 { /* End of list */ } 1662 }; 1663 1664 static void audio_pp_nb_voices (const char *typ, int nb) 1665 { 1666 switch (nb) { 1667 case 0: 1668 printf ("Does not support %s\n", typ); 1669 break; 1670 case 1: 1671 printf ("One %s voice\n", typ); 1672 break; 1673 case INT_MAX: 1674 printf ("Theoretically supports many %s voices\n", typ); 1675 break; 1676 default: 1677 printf ("Theoretically supports up to %d %s voices\n", nb, typ); 1678 break; 1679 } 1680 1681 } 1682 1683 void AUD_help (void) 1684 { 1685 size_t i; 1686 1687 audio_process_options ("AUDIO", audio_options); 1688 for (i = 0; i < ARRAY_SIZE (drvtab); i++) { 1689 struct audio_driver *d = drvtab[i]; 1690 if (d->options) { 1691 audio_process_options (d->name, d->options); 1692 } 1693 } 1694 1695 printf ("Audio options:\n"); 1696 audio_print_options ("AUDIO", audio_options); 1697 printf ("\n"); 1698 1699 printf ("Available drivers:\n"); 1700 1701 for (i = 0; i < ARRAY_SIZE (drvtab); i++) { 1702 struct audio_driver *d = drvtab[i]; 1703 1704 printf ("Name: %s\n", d->name); 1705 printf ("Description: %s\n", d->descr); 1706 1707 audio_pp_nb_voices ("playback", d->max_voices_out); 1708 audio_pp_nb_voices ("capture", d->max_voices_in); 1709 1710 if (d->options) { 1711 printf ("Options:\n"); 1712 audio_print_options (d->name, d->options); 1713 } 1714 else { 1715 printf ("No options\n"); 1716 } 1717 printf ("\n"); 1718 } 1719 1720 printf ( 1721 "Options are settable through environment variables.\n" 1722 "Example:\n" 1723 #ifdef _WIN32 1724 " set QEMU_AUDIO_DRV=wav\n" 1725 " set QEMU_WAV_PATH=c:\\tune.wav\n" 1726 #else 1727 " export QEMU_AUDIO_DRV=wav\n" 1728 " export QEMU_WAV_PATH=$HOME/tune.wav\n" 1729 "(for csh replace export with setenv in the above)\n" 1730 #endif 1731 " qemu ...\n\n" 1732 ); 1733 } 1734 1735 static int audio_driver_init (AudioState *s, struct audio_driver *drv) 1736 { 1737 if (drv->options) { 1738 audio_process_options (drv->name, drv->options); 1739 } 1740 s->drv_opaque = drv->init (); 1741 1742 if (s->drv_opaque) { 1743 audio_init_nb_voices_out (drv); 1744 audio_init_nb_voices_in (drv); 1745 s->drv = drv; 1746 return 0; 1747 } 1748 else { 1749 dolog ("Could not init `%s' audio driver\n", drv->name); 1750 return -1; 1751 } 1752 } 1753 1754 static void audio_vm_change_state_handler (void *opaque, int running, 1755 RunState state) 1756 { 1757 AudioState *s = opaque; 1758 HWVoiceOut *hwo = NULL; 1759 HWVoiceIn *hwi = NULL; 1760 int op = running ? VOICE_ENABLE : VOICE_DISABLE; 1761 1762 s->vm_running = running; 1763 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) { 1764 hwo->pcm_ops->ctl_out (hwo, op, conf.try_poll_out); 1765 } 1766 1767 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) { 1768 hwi->pcm_ops->ctl_in (hwi, op, conf.try_poll_in); 1769 } 1770 audio_reset_timer (s); 1771 } 1772 1773 static void audio_atexit (void) 1774 { 1775 AudioState *s = &glob_audio_state; 1776 HWVoiceOut *hwo = NULL; 1777 HWVoiceIn *hwi = NULL; 1778 1779 while ((hwo = audio_pcm_hw_find_any_out (hwo))) { 1780 SWVoiceCap *sc; 1781 1782 if (hwo->enabled) { 1783 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE); 1784 } 1785 hwo->pcm_ops->fini_out (hwo); 1786 1787 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) { 1788 CaptureVoiceOut *cap = sc->cap; 1789 struct capture_callback *cb; 1790 1791 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { 1792 cb->ops.destroy (cb->opaque); 1793 } 1794 } 1795 } 1796 1797 while ((hwi = audio_pcm_hw_find_any_in (hwi))) { 1798 if (hwi->enabled) { 1799 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE); 1800 } 1801 hwi->pcm_ops->fini_in (hwi); 1802 } 1803 1804 if (s->drv) { 1805 s->drv->fini (s->drv_opaque); 1806 } 1807 } 1808 1809 static const VMStateDescription vmstate_audio = { 1810 .name = "audio", 1811 .version_id = 1, 1812 .minimum_version_id = 1, 1813 .minimum_version_id_old = 1, 1814 .fields = (VMStateField []) { 1815 VMSTATE_END_OF_LIST() 1816 } 1817 }; 1818 1819 static void audio_init (void) 1820 { 1821 size_t i; 1822 int done = 0; 1823 const char *drvname; 1824 VMChangeStateEntry *e; 1825 AudioState *s = &glob_audio_state; 1826 1827 if (s->drv) { 1828 return; 1829 } 1830 1831 QLIST_INIT (&s->hw_head_out); 1832 QLIST_INIT (&s->hw_head_in); 1833 QLIST_INIT (&s->cap_head); 1834 atexit (audio_atexit); 1835 1836 s->ts = qemu_new_timer_ns (vm_clock, audio_timer, s); 1837 if (!s->ts) { 1838 hw_error("Could not create audio timer\n"); 1839 } 1840 1841 audio_process_options ("AUDIO", audio_options); 1842 1843 s->nb_hw_voices_out = conf.fixed_out.nb_voices; 1844 s->nb_hw_voices_in = conf.fixed_in.nb_voices; 1845 1846 if (s->nb_hw_voices_out <= 0) { 1847 dolog ("Bogus number of playback voices %d, setting to 1\n", 1848 s->nb_hw_voices_out); 1849 s->nb_hw_voices_out = 1; 1850 } 1851 1852 if (s->nb_hw_voices_in <= 0) { 1853 dolog ("Bogus number of capture voices %d, setting to 0\n", 1854 s->nb_hw_voices_in); 1855 s->nb_hw_voices_in = 0; 1856 } 1857 1858 { 1859 int def; 1860 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def); 1861 } 1862 1863 if (drvname) { 1864 int found = 0; 1865 1866 for (i = 0; i < ARRAY_SIZE (drvtab); i++) { 1867 if (!strcmp (drvname, drvtab[i]->name)) { 1868 done = !audio_driver_init (s, drvtab[i]); 1869 found = 1; 1870 break; 1871 } 1872 } 1873 1874 if (!found) { 1875 dolog ("Unknown audio driver `%s'\n", drvname); 1876 dolog ("Run with -audio-help to list available drivers\n"); 1877 } 1878 } 1879 1880 if (!done) { 1881 for (i = 0; !done && i < ARRAY_SIZE (drvtab); i++) { 1882 if (drvtab[i]->can_be_default) { 1883 done = !audio_driver_init (s, drvtab[i]); 1884 } 1885 } 1886 } 1887 1888 if (!done) { 1889 done = !audio_driver_init (s, &no_audio_driver); 1890 if (!done) { 1891 hw_error("Could not initialize audio subsystem\n"); 1892 } 1893 else { 1894 dolog ("warning: Using timer based audio emulation\n"); 1895 } 1896 } 1897 1898 if (conf.period.hertz <= 0) { 1899 if (conf.period.hertz < 0) { 1900 dolog ("warning: Timer period is negative - %d " 1901 "treating as zero\n", 1902 conf.period.hertz); 1903 } 1904 conf.period.ticks = 1; 1905 } else { 1906 conf.period.ticks = 1907 muldiv64 (1, get_ticks_per_sec (), conf.period.hertz); 1908 } 1909 1910 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s); 1911 if (!e) { 1912 dolog ("warning: Could not register change state handler\n" 1913 "(Audio can continue looping even after stopping the VM)\n"); 1914 } 1915 1916 QLIST_INIT (&s->card_head); 1917 vmstate_register (NULL, 0, &vmstate_audio, s); 1918 } 1919 1920 void AUD_register_card (const char *name, QEMUSoundCard *card) 1921 { 1922 audio_init (); 1923 card->name = g_strdup (name); 1924 memset (&card->entries, 0, sizeof (card->entries)); 1925 QLIST_INSERT_HEAD (&glob_audio_state.card_head, card, entries); 1926 } 1927 1928 void AUD_remove_card (QEMUSoundCard *card) 1929 { 1930 QLIST_REMOVE (card, entries); 1931 g_free (card->name); 1932 } 1933 1934 1935 CaptureVoiceOut *AUD_add_capture ( 1936 struct audsettings *as, 1937 struct audio_capture_ops *ops, 1938 void *cb_opaque 1939 ) 1940 { 1941 AudioState *s = &glob_audio_state; 1942 CaptureVoiceOut *cap; 1943 struct capture_callback *cb; 1944 1945 if (audio_validate_settings (as)) { 1946 dolog ("Invalid settings were passed when trying to add capture\n"); 1947 audio_print_settings (as); 1948 goto err0; 1949 } 1950 1951 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb)); 1952 if (!cb) { 1953 dolog ("Could not allocate capture callback information, size %zu\n", 1954 sizeof (*cb)); 1955 goto err0; 1956 } 1957 cb->ops = *ops; 1958 cb->opaque = cb_opaque; 1959 1960 cap = audio_pcm_capture_find_specific (as); 1961 if (cap) { 1962 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries); 1963 return cap; 1964 } 1965 else { 1966 HWVoiceOut *hw; 1967 CaptureVoiceOut *cap; 1968 1969 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap)); 1970 if (!cap) { 1971 dolog ("Could not allocate capture voice, size %zu\n", 1972 sizeof (*cap)); 1973 goto err1; 1974 } 1975 1976 hw = &cap->hw; 1977 QLIST_INIT (&hw->sw_head); 1978 QLIST_INIT (&cap->cb_head); 1979 1980 /* XXX find a more elegant way */ 1981 hw->samples = 4096 * 4; 1982 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1983 sizeof (struct st_sample)); 1984 if (!hw->mix_buf) { 1985 dolog ("Could not allocate capture mix buffer (%d samples)\n", 1986 hw->samples); 1987 goto err2; 1988 } 1989 1990 audio_pcm_init_info (&hw->info, as); 1991 1992 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); 1993 if (!cap->buf) { 1994 dolog ("Could not allocate capture buffer " 1995 "(%d samples, each %d bytes)\n", 1996 hw->samples, 1 << hw->info.shift); 1997 goto err3; 1998 } 1999 2000 hw->clip = mixeng_clip 2001 [hw->info.nchannels == 2] 2002 [hw->info.sign] 2003 [hw->info.swap_endianness] 2004 [audio_bits_to_index (hw->info.bits)]; 2005 2006 QLIST_INSERT_HEAD (&s->cap_head, cap, entries); 2007 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries); 2008 2009 hw = NULL; 2010 while ((hw = audio_pcm_hw_find_any_out (hw))) { 2011 audio_attach_capture (hw); 2012 } 2013 return cap; 2014 2015 err3: 2016 g_free (cap->hw.mix_buf); 2017 err2: 2018 g_free (cap); 2019 err1: 2020 g_free (cb); 2021 err0: 2022 return NULL; 2023 } 2024 } 2025 2026 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque) 2027 { 2028 struct capture_callback *cb; 2029 2030 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { 2031 if (cb->opaque == cb_opaque) { 2032 cb->ops.destroy (cb_opaque); 2033 QLIST_REMOVE (cb, entries); 2034 g_free (cb); 2035 2036 if (!cap->cb_head.lh_first) { 2037 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1; 2038 2039 while (sw) { 2040 SWVoiceCap *sc = (SWVoiceCap *) sw; 2041 #ifdef DEBUG_CAPTURE 2042 dolog ("freeing %s\n", sw->name); 2043 #endif 2044 2045 sw1 = sw->entries.le_next; 2046 if (sw->rate) { 2047 st_rate_stop (sw->rate); 2048 sw->rate = NULL; 2049 } 2050 QLIST_REMOVE (sw, entries); 2051 QLIST_REMOVE (sc, entries); 2052 g_free (sc); 2053 sw = sw1; 2054 } 2055 QLIST_REMOVE (cap, entries); 2056 g_free (cap); 2057 } 2058 return; 2059 } 2060 } 2061 } 2062 2063 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol) 2064 { 2065 if (sw) { 2066 HWVoiceOut *hw = sw->hw; 2067 2068 sw->vol.mute = mute; 2069 sw->vol.l = nominal_volume.l * lvol / 255; 2070 sw->vol.r = nominal_volume.r * rvol / 255; 2071 2072 if (hw->pcm_ops->ctl_out) { 2073 hw->pcm_ops->ctl_out (hw, VOICE_VOLUME, sw); 2074 } 2075 } 2076 } 2077 2078 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol) 2079 { 2080 if (sw) { 2081 HWVoiceIn *hw = sw->hw; 2082 2083 sw->vol.mute = mute; 2084 sw->vol.l = nominal_volume.l * lvol / 255; 2085 sw->vol.r = nominal_volume.r * rvol / 255; 2086 2087 if (hw->pcm_ops->ctl_in) { 2088 hw->pcm_ops->ctl_in (hw, VOICE_VOLUME, sw); 2089 } 2090 } 2091 } 2092