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.h" 27 #include "qemu-timer.h" 28 #include "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->rate = st_rate_start (sw->info.freq, hw_cap->info.freq); 822 if (!sw->rate) { 823 dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw)); 824 g_free (sw); 825 return -1; 826 } 827 QLIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries); 828 QLIST_INSERT_HEAD (&hw->cap_head, sc, entries); 829 #ifdef DEBUG_CAPTURE 830 asprintf (&sw->name, "for %p %d,%d,%d", 831 hw, sw->info.freq, sw->info.bits, sw->info.nchannels); 832 dolog ("Added %s active = %d\n", sw->name, sw->active); 833 #endif 834 if (sw->active) { 835 audio_capture_maybe_changed (cap, 1); 836 } 837 } 838 return 0; 839 } 840 841 /* 842 * Hard voice (capture) 843 */ 844 static int audio_pcm_hw_find_min_in (HWVoiceIn *hw) 845 { 846 SWVoiceIn *sw; 847 int m = hw->total_samples_captured; 848 849 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 850 if (sw->active) { 851 m = audio_MIN (m, sw->total_hw_samples_acquired); 852 } 853 } 854 return m; 855 } 856 857 int audio_pcm_hw_get_live_in (HWVoiceIn *hw) 858 { 859 int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw); 860 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { 861 dolog ("live=%d hw->samples=%d\n", live, hw->samples); 862 return 0; 863 } 864 return live; 865 } 866 867 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf, 868 int live, int pending) 869 { 870 int left = hw->samples - pending; 871 int len = audio_MIN (left, live); 872 int clipped = 0; 873 874 while (len) { 875 struct st_sample *src = hw->mix_buf + hw->rpos; 876 uint8_t *dst = advance (pcm_buf, hw->rpos << hw->info.shift); 877 int samples_till_end_of_buf = hw->samples - hw->rpos; 878 int samples_to_clip = audio_MIN (len, samples_till_end_of_buf); 879 880 hw->clip (dst, src, samples_to_clip); 881 882 hw->rpos = (hw->rpos + samples_to_clip) % hw->samples; 883 len -= samples_to_clip; 884 clipped += samples_to_clip; 885 } 886 return clipped; 887 } 888 889 /* 890 * Soft voice (capture) 891 */ 892 static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw) 893 { 894 HWVoiceIn *hw = sw->hw; 895 int live = hw->total_samples_captured - sw->total_hw_samples_acquired; 896 int rpos; 897 898 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { 899 dolog ("live=%d hw->samples=%d\n", live, hw->samples); 900 return 0; 901 } 902 903 rpos = hw->wpos - live; 904 if (rpos >= 0) { 905 return rpos; 906 } 907 else { 908 return hw->samples + rpos; 909 } 910 } 911 912 int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size) 913 { 914 HWVoiceIn *hw = sw->hw; 915 int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0; 916 struct st_sample *src, *dst = sw->buf; 917 918 rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples; 919 920 live = hw->total_samples_captured - sw->total_hw_samples_acquired; 921 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { 922 dolog ("live_in=%d hw->samples=%d\n", live, hw->samples); 923 return 0; 924 } 925 926 samples = size >> sw->info.shift; 927 if (!live) { 928 return 0; 929 } 930 931 swlim = (live * sw->ratio) >> 32; 932 swlim = audio_MIN (swlim, samples); 933 934 while (swlim) { 935 src = hw->conv_buf + rpos; 936 isamp = hw->wpos - rpos; 937 /* XXX: <= ? */ 938 if (isamp <= 0) { 939 isamp = hw->samples - rpos; 940 } 941 942 if (!isamp) { 943 break; 944 } 945 osamp = swlim; 946 947 if (audio_bug (AUDIO_FUNC, osamp < 0)) { 948 dolog ("osamp=%d\n", osamp); 949 return 0; 950 } 951 952 st_rate_flow (sw->rate, src, dst, &isamp, &osamp); 953 swlim -= osamp; 954 rpos = (rpos + isamp) % hw->samples; 955 dst += osamp; 956 ret += osamp; 957 total += isamp; 958 } 959 960 if (!(hw->ctl_caps & VOICE_VOLUME_CAP)) { 961 mixeng_volume (sw->buf, ret, &sw->vol); 962 } 963 964 sw->clip (buf, sw->buf, ret); 965 sw->total_hw_samples_acquired += total; 966 return ret << sw->info.shift; 967 } 968 969 /* 970 * Hard voice (playback) 971 */ 972 static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep) 973 { 974 SWVoiceOut *sw; 975 int m = INT_MAX; 976 int nb_live = 0; 977 978 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 979 if (sw->active || !sw->empty) { 980 m = audio_MIN (m, sw->total_hw_samples_mixed); 981 nb_live += 1; 982 } 983 } 984 985 *nb_livep = nb_live; 986 return m; 987 } 988 989 static int audio_pcm_hw_get_live_out (HWVoiceOut *hw, int *nb_live) 990 { 991 int smin; 992 int nb_live1; 993 994 smin = audio_pcm_hw_find_min_out (hw, &nb_live1); 995 if (nb_live) { 996 *nb_live = nb_live1; 997 } 998 999 if (nb_live1) { 1000 int live = smin; 1001 1002 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { 1003 dolog ("live=%d hw->samples=%d\n", live, hw->samples); 1004 return 0; 1005 } 1006 return live; 1007 } 1008 return 0; 1009 } 1010 1011 /* 1012 * Soft voice (playback) 1013 */ 1014 int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size) 1015 { 1016 int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck; 1017 int ret = 0, pos = 0, total = 0; 1018 1019 if (!sw) { 1020 return size; 1021 } 1022 1023 hwsamples = sw->hw->samples; 1024 1025 live = sw->total_hw_samples_mixed; 1026 if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){ 1027 dolog ("live=%d hw->samples=%d\n", live, hwsamples); 1028 return 0; 1029 } 1030 1031 if (live == hwsamples) { 1032 #ifdef DEBUG_OUT 1033 dolog ("%s is full %d\n", sw->name, live); 1034 #endif 1035 return 0; 1036 } 1037 1038 wpos = (sw->hw->rpos + live) % hwsamples; 1039 samples = size >> sw->info.shift; 1040 1041 dead = hwsamples - live; 1042 swlim = ((int64_t) dead << 32) / sw->ratio; 1043 swlim = audio_MIN (swlim, samples); 1044 if (swlim) { 1045 sw->conv (sw->buf, buf, swlim); 1046 1047 if (!(sw->hw->ctl_caps & VOICE_VOLUME_CAP)) { 1048 mixeng_volume (sw->buf, swlim, &sw->vol); 1049 } 1050 } 1051 1052 while (swlim) { 1053 dead = hwsamples - live; 1054 left = hwsamples - wpos; 1055 blck = audio_MIN (dead, left); 1056 if (!blck) { 1057 break; 1058 } 1059 isamp = swlim; 1060 osamp = blck; 1061 st_rate_flow_mix ( 1062 sw->rate, 1063 sw->buf + pos, 1064 sw->hw->mix_buf + wpos, 1065 &isamp, 1066 &osamp 1067 ); 1068 ret += isamp; 1069 swlim -= isamp; 1070 pos += isamp; 1071 live += osamp; 1072 wpos = (wpos + osamp) % hwsamples; 1073 total += osamp; 1074 } 1075 1076 sw->total_hw_samples_mixed += total; 1077 sw->empty = sw->total_hw_samples_mixed == 0; 1078 1079 #ifdef DEBUG_OUT 1080 dolog ( 1081 "%s: write size %d ret %d total sw %d\n", 1082 SW_NAME (sw), 1083 size >> sw->info.shift, 1084 ret, 1085 sw->total_hw_samples_mixed 1086 ); 1087 #endif 1088 1089 return ret << sw->info.shift; 1090 } 1091 1092 #ifdef DEBUG_AUDIO 1093 static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info) 1094 { 1095 dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n", 1096 cap, info->bits, info->sign, info->freq, info->nchannels); 1097 } 1098 #endif 1099 1100 #define DAC 1101 #include "audio_template.h" 1102 #undef DAC 1103 #include "audio_template.h" 1104 1105 /* 1106 * Timer 1107 */ 1108 static int audio_is_timer_needed (void) 1109 { 1110 HWVoiceIn *hwi = NULL; 1111 HWVoiceOut *hwo = NULL; 1112 1113 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) { 1114 if (!hwo->poll_mode) return 1; 1115 } 1116 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) { 1117 if (!hwi->poll_mode) return 1; 1118 } 1119 return 0; 1120 } 1121 1122 static void audio_reset_timer (AudioState *s) 1123 { 1124 if (audio_is_timer_needed ()) { 1125 qemu_mod_timer (s->ts, qemu_get_clock_ns (vm_clock) + 1); 1126 } 1127 else { 1128 qemu_del_timer (s->ts); 1129 } 1130 } 1131 1132 static void audio_timer (void *opaque) 1133 { 1134 audio_run ("timer"); 1135 audio_reset_timer (opaque); 1136 } 1137 1138 /* 1139 * Public API 1140 */ 1141 int AUD_write (SWVoiceOut *sw, void *buf, int size) 1142 { 1143 int bytes; 1144 1145 if (!sw) { 1146 /* XXX: Consider options */ 1147 return size; 1148 } 1149 1150 if (!sw->hw->enabled) { 1151 dolog ("Writing to disabled voice %s\n", SW_NAME (sw)); 1152 return 0; 1153 } 1154 1155 bytes = sw->hw->pcm_ops->write (sw, buf, size); 1156 return bytes; 1157 } 1158 1159 int AUD_read (SWVoiceIn *sw, void *buf, int size) 1160 { 1161 int bytes; 1162 1163 if (!sw) { 1164 /* XXX: Consider options */ 1165 return size; 1166 } 1167 1168 if (!sw->hw->enabled) { 1169 dolog ("Reading from disabled voice %s\n", SW_NAME (sw)); 1170 return 0; 1171 } 1172 1173 bytes = sw->hw->pcm_ops->read (sw, buf, size); 1174 return bytes; 1175 } 1176 1177 int AUD_get_buffer_size_out (SWVoiceOut *sw) 1178 { 1179 return sw->hw->samples << sw->hw->info.shift; 1180 } 1181 1182 void AUD_set_active_out (SWVoiceOut *sw, int on) 1183 { 1184 HWVoiceOut *hw; 1185 1186 if (!sw) { 1187 return; 1188 } 1189 1190 hw = sw->hw; 1191 if (sw->active != on) { 1192 AudioState *s = &glob_audio_state; 1193 SWVoiceOut *temp_sw; 1194 SWVoiceCap *sc; 1195 1196 if (on) { 1197 hw->pending_disable = 0; 1198 if (!hw->enabled) { 1199 hw->enabled = 1; 1200 if (s->vm_running) { 1201 hw->pcm_ops->ctl_out (hw, VOICE_ENABLE, conf.try_poll_out); 1202 audio_reset_timer (s); 1203 } 1204 } 1205 } 1206 else { 1207 if (hw->enabled) { 1208 int nb_active = 0; 1209 1210 for (temp_sw = hw->sw_head.lh_first; temp_sw; 1211 temp_sw = temp_sw->entries.le_next) { 1212 nb_active += temp_sw->active != 0; 1213 } 1214 1215 hw->pending_disable = nb_active == 1; 1216 } 1217 } 1218 1219 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { 1220 sc->sw.active = hw->enabled; 1221 if (hw->enabled) { 1222 audio_capture_maybe_changed (sc->cap, 1); 1223 } 1224 } 1225 sw->active = on; 1226 } 1227 } 1228 1229 void AUD_set_active_in (SWVoiceIn *sw, int on) 1230 { 1231 HWVoiceIn *hw; 1232 1233 if (!sw) { 1234 return; 1235 } 1236 1237 hw = sw->hw; 1238 if (sw->active != on) { 1239 AudioState *s = &glob_audio_state; 1240 SWVoiceIn *temp_sw; 1241 1242 if (on) { 1243 if (!hw->enabled) { 1244 hw->enabled = 1; 1245 if (s->vm_running) { 1246 hw->pcm_ops->ctl_in (hw, VOICE_ENABLE, conf.try_poll_in); 1247 audio_reset_timer (s); 1248 } 1249 } 1250 sw->total_hw_samples_acquired = hw->total_samples_captured; 1251 } 1252 else { 1253 if (hw->enabled) { 1254 int nb_active = 0; 1255 1256 for (temp_sw = hw->sw_head.lh_first; temp_sw; 1257 temp_sw = temp_sw->entries.le_next) { 1258 nb_active += temp_sw->active != 0; 1259 } 1260 1261 if (nb_active == 1) { 1262 hw->enabled = 0; 1263 hw->pcm_ops->ctl_in (hw, VOICE_DISABLE); 1264 } 1265 } 1266 } 1267 sw->active = on; 1268 } 1269 } 1270 1271 static int audio_get_avail (SWVoiceIn *sw) 1272 { 1273 int live; 1274 1275 if (!sw) { 1276 return 0; 1277 } 1278 1279 live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired; 1280 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) { 1281 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples); 1282 return 0; 1283 } 1284 1285 ldebug ( 1286 "%s: get_avail live %d ret %" PRId64 "\n", 1287 SW_NAME (sw), 1288 live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift 1289 ); 1290 1291 return (((int64_t) live << 32) / sw->ratio) << sw->info.shift; 1292 } 1293 1294 static int audio_get_free (SWVoiceOut *sw) 1295 { 1296 int live, dead; 1297 1298 if (!sw) { 1299 return 0; 1300 } 1301 1302 live = sw->total_hw_samples_mixed; 1303 1304 if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) { 1305 dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples); 1306 return 0; 1307 } 1308 1309 dead = sw->hw->samples - live; 1310 1311 #ifdef DEBUG_OUT 1312 dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n", 1313 SW_NAME (sw), 1314 live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift); 1315 #endif 1316 1317 return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift; 1318 } 1319 1320 static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples) 1321 { 1322 int n; 1323 1324 if (hw->enabled) { 1325 SWVoiceCap *sc; 1326 1327 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { 1328 SWVoiceOut *sw = &sc->sw; 1329 int rpos2 = rpos; 1330 1331 n = samples; 1332 while (n) { 1333 int till_end_of_hw = hw->samples - rpos2; 1334 int to_write = audio_MIN (till_end_of_hw, n); 1335 int bytes = to_write << hw->info.shift; 1336 int written; 1337 1338 sw->buf = hw->mix_buf + rpos2; 1339 written = audio_pcm_sw_write (sw, NULL, bytes); 1340 if (written - bytes) { 1341 dolog ("Could not mix %d bytes into a capture " 1342 "buffer, mixed %d\n", 1343 bytes, written); 1344 break; 1345 } 1346 n -= to_write; 1347 rpos2 = (rpos2 + to_write) % hw->samples; 1348 } 1349 } 1350 } 1351 1352 n = audio_MIN (samples, hw->samples - rpos); 1353 mixeng_clear (hw->mix_buf + rpos, n); 1354 mixeng_clear (hw->mix_buf, samples - n); 1355 } 1356 1357 static void audio_run_out (AudioState *s) 1358 { 1359 HWVoiceOut *hw = NULL; 1360 SWVoiceOut *sw; 1361 1362 while ((hw = audio_pcm_hw_find_any_enabled_out (hw))) { 1363 int played; 1364 int live, free, nb_live, cleanup_required, prev_rpos; 1365 1366 live = audio_pcm_hw_get_live_out (hw, &nb_live); 1367 if (!nb_live) { 1368 live = 0; 1369 } 1370 1371 if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { 1372 dolog ("live=%d hw->samples=%d\n", live, hw->samples); 1373 continue; 1374 } 1375 1376 if (hw->pending_disable && !nb_live) { 1377 SWVoiceCap *sc; 1378 #ifdef DEBUG_OUT 1379 dolog ("Disabling voice\n"); 1380 #endif 1381 hw->enabled = 0; 1382 hw->pending_disable = 0; 1383 hw->pcm_ops->ctl_out (hw, VOICE_DISABLE); 1384 for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { 1385 sc->sw.active = 0; 1386 audio_recalc_and_notify_capture (sc->cap); 1387 } 1388 continue; 1389 } 1390 1391 if (!live) { 1392 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 1393 if (sw->active) { 1394 free = audio_get_free (sw); 1395 if (free > 0) { 1396 sw->callback.fn (sw->callback.opaque, free); 1397 } 1398 } 1399 } 1400 continue; 1401 } 1402 1403 prev_rpos = hw->rpos; 1404 played = hw->pcm_ops->run_out (hw, live); 1405 if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) { 1406 dolog ("hw->rpos=%d hw->samples=%d played=%d\n", 1407 hw->rpos, hw->samples, played); 1408 hw->rpos = 0; 1409 } 1410 1411 #ifdef DEBUG_OUT 1412 dolog ("played=%d\n", played); 1413 #endif 1414 1415 if (played) { 1416 hw->ts_helper += played; 1417 audio_capture_mix_and_clear (hw, prev_rpos, played); 1418 } 1419 1420 cleanup_required = 0; 1421 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 1422 if (!sw->active && sw->empty) { 1423 continue; 1424 } 1425 1426 if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) { 1427 dolog ("played=%d sw->total_hw_samples_mixed=%d\n", 1428 played, sw->total_hw_samples_mixed); 1429 played = sw->total_hw_samples_mixed; 1430 } 1431 1432 sw->total_hw_samples_mixed -= played; 1433 1434 if (!sw->total_hw_samples_mixed) { 1435 sw->empty = 1; 1436 cleanup_required |= !sw->active && !sw->callback.fn; 1437 } 1438 1439 if (sw->active) { 1440 free = audio_get_free (sw); 1441 if (free > 0) { 1442 sw->callback.fn (sw->callback.opaque, free); 1443 } 1444 } 1445 } 1446 1447 if (cleanup_required) { 1448 SWVoiceOut *sw1; 1449 1450 sw = hw->sw_head.lh_first; 1451 while (sw) { 1452 sw1 = sw->entries.le_next; 1453 if (!sw->active && !sw->callback.fn) { 1454 #ifdef DEBUG_PLIVE 1455 dolog ("Finishing with old voice\n"); 1456 #endif 1457 audio_close_out (sw); 1458 } 1459 sw = sw1; 1460 } 1461 } 1462 } 1463 } 1464 1465 static void audio_run_in (AudioState *s) 1466 { 1467 HWVoiceIn *hw = NULL; 1468 1469 while ((hw = audio_pcm_hw_find_any_enabled_in (hw))) { 1470 SWVoiceIn *sw; 1471 int captured, min; 1472 1473 captured = hw->pcm_ops->run_in (hw); 1474 1475 min = audio_pcm_hw_find_min_in (hw); 1476 hw->total_samples_captured += captured - min; 1477 hw->ts_helper += captured; 1478 1479 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 1480 sw->total_hw_samples_acquired -= min; 1481 1482 if (sw->active) { 1483 int avail; 1484 1485 avail = audio_get_avail (sw); 1486 if (avail > 0) { 1487 sw->callback.fn (sw->callback.opaque, avail); 1488 } 1489 } 1490 } 1491 } 1492 } 1493 1494 static void audio_run_capture (AudioState *s) 1495 { 1496 CaptureVoiceOut *cap; 1497 1498 for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { 1499 int live, rpos, captured; 1500 HWVoiceOut *hw = &cap->hw; 1501 SWVoiceOut *sw; 1502 1503 captured = live = audio_pcm_hw_get_live_out (hw, NULL); 1504 rpos = hw->rpos; 1505 while (live) { 1506 int left = hw->samples - rpos; 1507 int to_capture = audio_MIN (live, left); 1508 struct st_sample *src; 1509 struct capture_callback *cb; 1510 1511 src = hw->mix_buf + rpos; 1512 hw->clip (cap->buf, src, to_capture); 1513 mixeng_clear (src, to_capture); 1514 1515 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { 1516 cb->ops.capture (cb->opaque, cap->buf, 1517 to_capture << hw->info.shift); 1518 } 1519 rpos = (rpos + to_capture) % hw->samples; 1520 live -= to_capture; 1521 } 1522 hw->rpos = rpos; 1523 1524 for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { 1525 if (!sw->active && sw->empty) { 1526 continue; 1527 } 1528 1529 if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) { 1530 dolog ("captured=%d sw->total_hw_samples_mixed=%d\n", 1531 captured, sw->total_hw_samples_mixed); 1532 captured = sw->total_hw_samples_mixed; 1533 } 1534 1535 sw->total_hw_samples_mixed -= captured; 1536 sw->empty = sw->total_hw_samples_mixed == 0; 1537 } 1538 } 1539 } 1540 1541 void audio_run (const char *msg) 1542 { 1543 AudioState *s = &glob_audio_state; 1544 1545 audio_run_out (s); 1546 audio_run_in (s); 1547 audio_run_capture (s); 1548 #ifdef DEBUG_POLL 1549 { 1550 static double prevtime; 1551 double currtime; 1552 struct timeval tv; 1553 1554 if (gettimeofday (&tv, NULL)) { 1555 perror ("audio_run: gettimeofday"); 1556 return; 1557 } 1558 1559 currtime = tv.tv_sec + tv.tv_usec * 1e-6; 1560 dolog ("Elapsed since last %s: %f\n", msg, currtime - prevtime); 1561 prevtime = currtime; 1562 } 1563 #endif 1564 } 1565 1566 static struct audio_option audio_options[] = { 1567 /* DAC */ 1568 { 1569 .name = "DAC_FIXED_SETTINGS", 1570 .tag = AUD_OPT_BOOL, 1571 .valp = &conf.fixed_out.enabled, 1572 .descr = "Use fixed settings for host DAC" 1573 }, 1574 { 1575 .name = "DAC_FIXED_FREQ", 1576 .tag = AUD_OPT_INT, 1577 .valp = &conf.fixed_out.settings.freq, 1578 .descr = "Frequency for fixed host DAC" 1579 }, 1580 { 1581 .name = "DAC_FIXED_FMT", 1582 .tag = AUD_OPT_FMT, 1583 .valp = &conf.fixed_out.settings.fmt, 1584 .descr = "Format for fixed host DAC" 1585 }, 1586 { 1587 .name = "DAC_FIXED_CHANNELS", 1588 .tag = AUD_OPT_INT, 1589 .valp = &conf.fixed_out.settings.nchannels, 1590 .descr = "Number of channels for fixed DAC (1 - mono, 2 - stereo)" 1591 }, 1592 { 1593 .name = "DAC_VOICES", 1594 .tag = AUD_OPT_INT, 1595 .valp = &conf.fixed_out.nb_voices, 1596 .descr = "Number of voices for DAC" 1597 }, 1598 { 1599 .name = "DAC_TRY_POLL", 1600 .tag = AUD_OPT_BOOL, 1601 .valp = &conf.try_poll_out, 1602 .descr = "Attempt using poll mode for DAC" 1603 }, 1604 /* ADC */ 1605 { 1606 .name = "ADC_FIXED_SETTINGS", 1607 .tag = AUD_OPT_BOOL, 1608 .valp = &conf.fixed_in.enabled, 1609 .descr = "Use fixed settings for host ADC" 1610 }, 1611 { 1612 .name = "ADC_FIXED_FREQ", 1613 .tag = AUD_OPT_INT, 1614 .valp = &conf.fixed_in.settings.freq, 1615 .descr = "Frequency for fixed host ADC" 1616 }, 1617 { 1618 .name = "ADC_FIXED_FMT", 1619 .tag = AUD_OPT_FMT, 1620 .valp = &conf.fixed_in.settings.fmt, 1621 .descr = "Format for fixed host ADC" 1622 }, 1623 { 1624 .name = "ADC_FIXED_CHANNELS", 1625 .tag = AUD_OPT_INT, 1626 .valp = &conf.fixed_in.settings.nchannels, 1627 .descr = "Number of channels for fixed ADC (1 - mono, 2 - stereo)" 1628 }, 1629 { 1630 .name = "ADC_VOICES", 1631 .tag = AUD_OPT_INT, 1632 .valp = &conf.fixed_in.nb_voices, 1633 .descr = "Number of voices for ADC" 1634 }, 1635 { 1636 .name = "ADC_TRY_POLL", 1637 .tag = AUD_OPT_BOOL, 1638 .valp = &conf.try_poll_in, 1639 .descr = "Attempt using poll mode for ADC" 1640 }, 1641 /* Misc */ 1642 { 1643 .name = "TIMER_PERIOD", 1644 .tag = AUD_OPT_INT, 1645 .valp = &conf.period.hertz, 1646 .descr = "Timer period in HZ (0 - use lowest possible)" 1647 }, 1648 { 1649 .name = "PLIVE", 1650 .tag = AUD_OPT_BOOL, 1651 .valp = &conf.plive, 1652 .descr = "(undocumented)" 1653 }, 1654 { 1655 .name = "LOG_TO_MONITOR", 1656 .tag = AUD_OPT_BOOL, 1657 .valp = &conf.log_to_monitor, 1658 .descr = "Print logging messages to monitor instead of stderr" 1659 }, 1660 { /* End of list */ } 1661 }; 1662 1663 static void audio_pp_nb_voices (const char *typ, int nb) 1664 { 1665 switch (nb) { 1666 case 0: 1667 printf ("Does not support %s\n", typ); 1668 break; 1669 case 1: 1670 printf ("One %s voice\n", typ); 1671 break; 1672 case INT_MAX: 1673 printf ("Theoretically supports many %s voices\n", typ); 1674 break; 1675 default: 1676 printf ("Theoretically supports up to %d %s voices\n", nb, typ); 1677 break; 1678 } 1679 1680 } 1681 1682 void AUD_help (void) 1683 { 1684 size_t i; 1685 1686 audio_process_options ("AUDIO", audio_options); 1687 for (i = 0; i < ARRAY_SIZE (drvtab); i++) { 1688 struct audio_driver *d = drvtab[i]; 1689 if (d->options) { 1690 audio_process_options (d->name, d->options); 1691 } 1692 } 1693 1694 printf ("Audio options:\n"); 1695 audio_print_options ("AUDIO", audio_options); 1696 printf ("\n"); 1697 1698 printf ("Available drivers:\n"); 1699 1700 for (i = 0; i < ARRAY_SIZE (drvtab); i++) { 1701 struct audio_driver *d = drvtab[i]; 1702 1703 printf ("Name: %s\n", d->name); 1704 printf ("Description: %s\n", d->descr); 1705 1706 audio_pp_nb_voices ("playback", d->max_voices_out); 1707 audio_pp_nb_voices ("capture", d->max_voices_in); 1708 1709 if (d->options) { 1710 printf ("Options:\n"); 1711 audio_print_options (d->name, d->options); 1712 } 1713 else { 1714 printf ("No options\n"); 1715 } 1716 printf ("\n"); 1717 } 1718 1719 printf ( 1720 "Options are settable through environment variables.\n" 1721 "Example:\n" 1722 #ifdef _WIN32 1723 " set QEMU_AUDIO_DRV=wav\n" 1724 " set QEMU_WAV_PATH=c:\\tune.wav\n" 1725 #else 1726 " export QEMU_AUDIO_DRV=wav\n" 1727 " export QEMU_WAV_PATH=$HOME/tune.wav\n" 1728 "(for csh replace export with setenv in the above)\n" 1729 #endif 1730 " qemu ...\n\n" 1731 ); 1732 } 1733 1734 static int audio_driver_init (AudioState *s, struct audio_driver *drv) 1735 { 1736 if (drv->options) { 1737 audio_process_options (drv->name, drv->options); 1738 } 1739 s->drv_opaque = drv->init (); 1740 1741 if (s->drv_opaque) { 1742 audio_init_nb_voices_out (drv); 1743 audio_init_nb_voices_in (drv); 1744 s->drv = drv; 1745 return 0; 1746 } 1747 else { 1748 dolog ("Could not init `%s' audio driver\n", drv->name); 1749 return -1; 1750 } 1751 } 1752 1753 static void audio_vm_change_state_handler (void *opaque, int running, 1754 RunState state) 1755 { 1756 AudioState *s = opaque; 1757 HWVoiceOut *hwo = NULL; 1758 HWVoiceIn *hwi = NULL; 1759 int op = running ? VOICE_ENABLE : VOICE_DISABLE; 1760 1761 s->vm_running = running; 1762 while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) { 1763 hwo->pcm_ops->ctl_out (hwo, op, conf.try_poll_out); 1764 } 1765 1766 while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) { 1767 hwi->pcm_ops->ctl_in (hwi, op, conf.try_poll_in); 1768 } 1769 audio_reset_timer (s); 1770 } 1771 1772 static void audio_atexit (void) 1773 { 1774 AudioState *s = &glob_audio_state; 1775 HWVoiceOut *hwo = NULL; 1776 HWVoiceIn *hwi = NULL; 1777 1778 while ((hwo = audio_pcm_hw_find_any_out (hwo))) { 1779 SWVoiceCap *sc; 1780 1781 if (hwo->enabled) { 1782 hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE); 1783 } 1784 hwo->pcm_ops->fini_out (hwo); 1785 1786 for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) { 1787 CaptureVoiceOut *cap = sc->cap; 1788 struct capture_callback *cb; 1789 1790 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { 1791 cb->ops.destroy (cb->opaque); 1792 } 1793 } 1794 } 1795 1796 while ((hwi = audio_pcm_hw_find_any_in (hwi))) { 1797 if (hwi->enabled) { 1798 hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE); 1799 } 1800 hwi->pcm_ops->fini_in (hwi); 1801 } 1802 1803 if (s->drv) { 1804 s->drv->fini (s->drv_opaque); 1805 } 1806 } 1807 1808 static const VMStateDescription vmstate_audio = { 1809 .name = "audio", 1810 .version_id = 1, 1811 .minimum_version_id = 1, 1812 .minimum_version_id_old = 1, 1813 .fields = (VMStateField []) { 1814 VMSTATE_END_OF_LIST() 1815 } 1816 }; 1817 1818 static void audio_init (void) 1819 { 1820 size_t i; 1821 int done = 0; 1822 const char *drvname; 1823 VMChangeStateEntry *e; 1824 AudioState *s = &glob_audio_state; 1825 1826 if (s->drv) { 1827 return; 1828 } 1829 1830 QLIST_INIT (&s->hw_head_out); 1831 QLIST_INIT (&s->hw_head_in); 1832 QLIST_INIT (&s->cap_head); 1833 atexit (audio_atexit); 1834 1835 s->ts = qemu_new_timer_ns (vm_clock, audio_timer, s); 1836 if (!s->ts) { 1837 hw_error("Could not create audio timer\n"); 1838 } 1839 1840 audio_process_options ("AUDIO", audio_options); 1841 1842 s->nb_hw_voices_out = conf.fixed_out.nb_voices; 1843 s->nb_hw_voices_in = conf.fixed_in.nb_voices; 1844 1845 if (s->nb_hw_voices_out <= 0) { 1846 dolog ("Bogus number of playback voices %d, setting to 1\n", 1847 s->nb_hw_voices_out); 1848 s->nb_hw_voices_out = 1; 1849 } 1850 1851 if (s->nb_hw_voices_in <= 0) { 1852 dolog ("Bogus number of capture voices %d, setting to 0\n", 1853 s->nb_hw_voices_in); 1854 s->nb_hw_voices_in = 0; 1855 } 1856 1857 { 1858 int def; 1859 drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def); 1860 } 1861 1862 if (drvname) { 1863 int found = 0; 1864 1865 for (i = 0; i < ARRAY_SIZE (drvtab); i++) { 1866 if (!strcmp (drvname, drvtab[i]->name)) { 1867 done = !audio_driver_init (s, drvtab[i]); 1868 found = 1; 1869 break; 1870 } 1871 } 1872 1873 if (!found) { 1874 dolog ("Unknown audio driver `%s'\n", drvname); 1875 dolog ("Run with -audio-help to list available drivers\n"); 1876 } 1877 } 1878 1879 if (!done) { 1880 for (i = 0; !done && i < ARRAY_SIZE (drvtab); i++) { 1881 if (drvtab[i]->can_be_default) { 1882 done = !audio_driver_init (s, drvtab[i]); 1883 } 1884 } 1885 } 1886 1887 if (!done) { 1888 done = !audio_driver_init (s, &no_audio_driver); 1889 if (!done) { 1890 hw_error("Could not initialize audio subsystem\n"); 1891 } 1892 else { 1893 dolog ("warning: Using timer based audio emulation\n"); 1894 } 1895 } 1896 1897 if (conf.period.hertz <= 0) { 1898 if (conf.period.hertz < 0) { 1899 dolog ("warning: Timer period is negative - %d " 1900 "treating as zero\n", 1901 conf.period.hertz); 1902 } 1903 conf.period.ticks = 1; 1904 } else { 1905 conf.period.ticks = 1906 muldiv64 (1, get_ticks_per_sec (), conf.period.hertz); 1907 } 1908 1909 e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s); 1910 if (!e) { 1911 dolog ("warning: Could not register change state handler\n" 1912 "(Audio can continue looping even after stopping the VM)\n"); 1913 } 1914 1915 QLIST_INIT (&s->card_head); 1916 vmstate_register (NULL, 0, &vmstate_audio, s); 1917 } 1918 1919 void AUD_register_card (const char *name, QEMUSoundCard *card) 1920 { 1921 audio_init (); 1922 card->name = g_strdup (name); 1923 memset (&card->entries, 0, sizeof (card->entries)); 1924 QLIST_INSERT_HEAD (&glob_audio_state.card_head, card, entries); 1925 } 1926 1927 void AUD_remove_card (QEMUSoundCard *card) 1928 { 1929 QLIST_REMOVE (card, entries); 1930 g_free (card->name); 1931 } 1932 1933 1934 CaptureVoiceOut *AUD_add_capture ( 1935 struct audsettings *as, 1936 struct audio_capture_ops *ops, 1937 void *cb_opaque 1938 ) 1939 { 1940 AudioState *s = &glob_audio_state; 1941 CaptureVoiceOut *cap; 1942 struct capture_callback *cb; 1943 1944 if (audio_validate_settings (as)) { 1945 dolog ("Invalid settings were passed when trying to add capture\n"); 1946 audio_print_settings (as); 1947 goto err0; 1948 } 1949 1950 cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb)); 1951 if (!cb) { 1952 dolog ("Could not allocate capture callback information, size %zu\n", 1953 sizeof (*cb)); 1954 goto err0; 1955 } 1956 cb->ops = *ops; 1957 cb->opaque = cb_opaque; 1958 1959 cap = audio_pcm_capture_find_specific (as); 1960 if (cap) { 1961 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries); 1962 return cap; 1963 } 1964 else { 1965 HWVoiceOut *hw; 1966 CaptureVoiceOut *cap; 1967 1968 cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap)); 1969 if (!cap) { 1970 dolog ("Could not allocate capture voice, size %zu\n", 1971 sizeof (*cap)); 1972 goto err1; 1973 } 1974 1975 hw = &cap->hw; 1976 QLIST_INIT (&hw->sw_head); 1977 QLIST_INIT (&cap->cb_head); 1978 1979 /* XXX find a more elegant way */ 1980 hw->samples = 4096 * 4; 1981 hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1982 sizeof (struct st_sample)); 1983 if (!hw->mix_buf) { 1984 dolog ("Could not allocate capture mix buffer (%d samples)\n", 1985 hw->samples); 1986 goto err2; 1987 } 1988 1989 audio_pcm_init_info (&hw->info, as); 1990 1991 cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); 1992 if (!cap->buf) { 1993 dolog ("Could not allocate capture buffer " 1994 "(%d samples, each %d bytes)\n", 1995 hw->samples, 1 << hw->info.shift); 1996 goto err3; 1997 } 1998 1999 hw->clip = mixeng_clip 2000 [hw->info.nchannels == 2] 2001 [hw->info.sign] 2002 [hw->info.swap_endianness] 2003 [audio_bits_to_index (hw->info.bits)]; 2004 2005 QLIST_INSERT_HEAD (&s->cap_head, cap, entries); 2006 QLIST_INSERT_HEAD (&cap->cb_head, cb, entries); 2007 2008 hw = NULL; 2009 while ((hw = audio_pcm_hw_find_any_out (hw))) { 2010 audio_attach_capture (hw); 2011 } 2012 return cap; 2013 2014 err3: 2015 g_free (cap->hw.mix_buf); 2016 err2: 2017 g_free (cap); 2018 err1: 2019 g_free (cb); 2020 err0: 2021 return NULL; 2022 } 2023 } 2024 2025 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque) 2026 { 2027 struct capture_callback *cb; 2028 2029 for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { 2030 if (cb->opaque == cb_opaque) { 2031 cb->ops.destroy (cb_opaque); 2032 QLIST_REMOVE (cb, entries); 2033 g_free (cb); 2034 2035 if (!cap->cb_head.lh_first) { 2036 SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1; 2037 2038 while (sw) { 2039 SWVoiceCap *sc = (SWVoiceCap *) sw; 2040 #ifdef DEBUG_CAPTURE 2041 dolog ("freeing %s\n", sw->name); 2042 #endif 2043 2044 sw1 = sw->entries.le_next; 2045 if (sw->rate) { 2046 st_rate_stop (sw->rate); 2047 sw->rate = NULL; 2048 } 2049 QLIST_REMOVE (sw, entries); 2050 QLIST_REMOVE (sc, entries); 2051 g_free (sc); 2052 sw = sw1; 2053 } 2054 QLIST_REMOVE (cap, entries); 2055 g_free (cap); 2056 } 2057 return; 2058 } 2059 } 2060 } 2061 2062 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol) 2063 { 2064 if (sw) { 2065 HWVoiceOut *hw = sw->hw; 2066 2067 sw->vol.mute = mute; 2068 sw->vol.l = nominal_volume.l * lvol / 255; 2069 sw->vol.r = nominal_volume.r * rvol / 255; 2070 2071 if (hw->pcm_ops->ctl_out) { 2072 hw->pcm_ops->ctl_out (hw, VOICE_VOLUME, sw); 2073 } 2074 } 2075 } 2076 2077 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol) 2078 { 2079 if (sw) { 2080 HWVoiceIn *hw = sw->hw; 2081 2082 sw->vol.mute = mute; 2083 sw->vol.l = nominal_volume.l * lvol / 255; 2084 sw->vol.r = nominal_volume.r * rvol / 255; 2085 2086 if (hw->pcm_ops->ctl_in) { 2087 hw->pcm_ops->ctl_in (hw, VOICE_VOLUME, sw); 2088 } 2089 } 2090 } 2091