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1.1 root 1: /*
2: * QEMU Audio subsystem
1.1.1.2 ! root 3: *
! 4: * Copyright (c) 2003-2005 Vassili Karpov (malc)
! 5: *
1.1 root 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 "vl.h"
25:
1.1.1.2 ! root 26: #define AUDIO_CAP "audio"
! 27: #include "audio_int.h"
1.1 root 28:
1.1.1.2 ! root 29: /* #define DEBUG_PLIVE */
! 30: /* #define DEBUG_LIVE */
! 31: /* #define DEBUG_OUT */
1.1 root 32:
1.1.1.2 ! root 33: #define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown"
! 34:
! 35: static struct audio_driver *drvtab[] = {
! 36: #ifdef CONFIG_OSS
! 37: &oss_audio_driver,
! 38: #endif
! 39: #ifdef CONFIG_ALSA
! 40: &alsa_audio_driver,
! 41: #endif
! 42: #ifdef CONFIG_COREAUDIO
! 43: &coreaudio_audio_driver,
! 44: #endif
! 45: #ifdef CONFIG_DSOUND
! 46: &dsound_audio_driver,
! 47: #endif
! 48: #ifdef CONFIG_FMOD
! 49: &fmod_audio_driver,
1.1 root 50: #endif
1.1.1.2 ! root 51: #ifdef CONFIG_SDL
! 52: &sdl_audio_driver,
! 53: #endif
! 54: &no_audio_driver,
! 55: &wav_audio_driver
! 56: };
! 57:
! 58: struct fixed_settings {
! 59: int enabled;
! 60: int nb_voices;
! 61: int greedy;
! 62: audsettings_t settings;
! 63: };
! 64:
! 65: static struct {
! 66: struct fixed_settings fixed_out;
! 67: struct fixed_settings fixed_in;
! 68: union {
! 69: int hz;
! 70: int64_t ticks;
! 71: } period;
! 72: int plive;
! 73: int log_to_monitor;
! 74: } conf = {
! 75: { /* DAC fixed settings */
! 76: 1, /* enabled */
! 77: 1, /* nb_voices */
! 78: 1, /* greedy */
! 79: {
! 80: 44100, /* freq */
! 81: 2, /* nchannels */
! 82: AUD_FMT_S16 /* fmt */
! 83: }
! 84: },
! 85:
! 86: { /* ADC fixed settings */
! 87: 1, /* enabled */
! 88: 1, /* nb_voices */
! 89: 1, /* greedy */
! 90: {
! 91: 44100, /* freq */
! 92: 2, /* nchannels */
! 93: AUD_FMT_S16 /* fmt */
! 94: }
! 95: },
! 96:
! 97: { 0 }, /* period */
! 98: 0, /* plive */
! 99: 0 /* log_to_monitor */
! 100: };
1.1 root 101:
1.1.1.2 ! root 102: static AudioState glob_audio_state;
! 103:
! 104: volume_t nominal_volume = {
! 105: 0,
! 106: #ifdef FLOAT_MIXENG
! 107: 1.0,
! 108: 1.0
! 109: #else
! 110: UINT_MAX,
! 111: UINT_MAX
! 112: #endif
1.1 root 113: };
114:
115: /* http://www.df.lth.se/~john_e/gems/gem002d.html */
116: /* http://www.multi-platforms.com/Tips/PopCount.htm */
117: uint32_t popcount (uint32_t u)
118: {
119: u = ((u&0x55555555) + ((u>>1)&0x55555555));
120: u = ((u&0x33333333) + ((u>>2)&0x33333333));
121: u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
122: u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
123: u = ( u&0x0000ffff) + (u>>16);
124: return u;
125: }
126:
127: inline uint32_t lsbindex (uint32_t u)
128: {
129: return popcount ((u&-u)-1);
130: }
131:
1.1.1.2 ! root 132: #ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
! 133: #error No its not
! 134: #else
! 135: int audio_bug (const char *funcname, int cond)
! 136: {
! 137: if (cond) {
! 138: static int shown;
! 139:
! 140: AUD_log (NULL, "Error a bug that was just triggered in %s\n", funcname);
! 141: if (!shown) {
! 142: shown = 1;
! 143: AUD_log (NULL, "Save all your work and restart without audio\n");
! 144: AUD_log (NULL, "Please send bug report to [email protected]\n");
! 145: AUD_log (NULL, "I am sorry\n");
! 146: }
! 147: AUD_log (NULL, "Context:\n");
! 148:
! 149: #if defined AUDIO_BREAKPOINT_ON_BUG
! 150: # if defined HOST_I386
! 151: # if defined __GNUC__
! 152: __asm__ ("int3");
! 153: # elif defined _MSC_VER
! 154: _asm _emit 0xcc;
! 155: # else
! 156: abort ();
! 157: # endif
! 158: # else
! 159: abort ();
! 160: # endif
! 161: #endif
! 162: }
! 163:
! 164: return cond;
! 165: }
! 166: #endif
! 167:
! 168: void *audio_calloc (const char *funcname, int nmemb, size_t size)
! 169: {
! 170: int cond;
! 171: size_t len;
! 172:
! 173: len = nmemb * size;
! 174: cond = !nmemb || !size;
! 175: cond |= nmemb < 0;
! 176: cond |= len < size;
! 177:
! 178: if (audio_bug ("audio_calloc", cond)) {
! 179: AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
! 180: funcname);
! 181: AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len);
! 182: return NULL;
! 183: }
! 184:
! 185: return qemu_mallocz (len);
! 186: }
! 187:
! 188: static char *audio_alloc_prefix (const char *s)
1.1 root 189: {
1.1.1.2 ! root 190: const char qemu_prefix[] = "QEMU_";
! 191: size_t len;
! 192: char *r;
! 193:
! 194: if (!s) {
! 195: return NULL;
! 196: }
! 197:
! 198: len = strlen (s);
! 199: r = qemu_malloc (len + sizeof (qemu_prefix));
! 200:
! 201: if (r) {
! 202: size_t i;
! 203: char *u = r + sizeof (qemu_prefix) - 1;
! 204:
! 205: strcpy (r, qemu_prefix);
! 206: strcat (r, s);
! 207:
! 208: for (i = 0; i < len; ++i) {
! 209: u[i] = toupper (u[i]);
! 210: }
! 211: }
! 212: return r;
! 213: }
! 214:
! 215: const char *audio_audfmt_to_string (audfmt_e fmt)
! 216: {
! 217: switch (fmt) {
! 218: case AUD_FMT_U8:
! 219: return "U8";
! 220:
! 221: case AUD_FMT_U16:
! 222: return "U16";
! 223:
! 224: case AUD_FMT_S8:
! 225: return "S8";
! 226:
! 227: case AUD_FMT_S16:
! 228: return "S16";
! 229: }
! 230:
! 231: dolog ("Bogus audfmt %d returning S16\n", fmt);
! 232: return "S16";
! 233: }
! 234:
! 235: audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval, int *defaultp)
! 236: {
! 237: if (!strcasecmp (s, "u8")) {
! 238: *defaultp = 0;
! 239: return AUD_FMT_U8;
! 240: }
! 241: else if (!strcasecmp (s, "u16")) {
! 242: *defaultp = 0;
! 243: return AUD_FMT_U16;
! 244: }
! 245: else if (!strcasecmp (s, "s8")) {
! 246: *defaultp = 0;
! 247: return AUD_FMT_S8;
! 248: }
! 249: else if (!strcasecmp (s, "s16")) {
! 250: *defaultp = 0;
! 251: return AUD_FMT_S16;
! 252: }
! 253: else {
! 254: dolog ("Bogus audio format `%s' using %s\n",
! 255: s, audio_audfmt_to_string (defval));
! 256: *defaultp = 1;
! 257: return defval;
! 258: }
! 259: }
! 260:
! 261: static audfmt_e audio_get_conf_fmt (const char *envname,
! 262: audfmt_e defval,
! 263: int *defaultp)
! 264: {
! 265: const char *var = getenv (envname);
! 266: if (!var) {
! 267: *defaultp = 1;
! 268: return defval;
! 269: }
! 270: return audio_string_to_audfmt (var, defval, defaultp);
! 271: }
! 272:
! 273: static int audio_get_conf_int (const char *key, int defval, int *defaultp)
! 274: {
! 275: int val;
1.1 root 276: char *strval;
277:
278: strval = getenv (key);
279: if (strval) {
1.1.1.2 ! root 280: *defaultp = 0;
1.1 root 281: val = atoi (strval);
1.1.1.2 ! root 282: return val;
! 283: }
! 284: else {
! 285: *defaultp = 1;
! 286: return defval;
1.1 root 287: }
288: }
289:
1.1.1.2 ! root 290: static const char *audio_get_conf_str (const char *key,
! 291: const char *defval,
! 292: int *defaultp)
1.1 root 293: {
294: const char *val = getenv (key);
1.1.1.2 ! root 295: if (!val) {
! 296: *defaultp = 1;
1.1 root 297: return defval;
1.1.1.2 ! root 298: }
! 299: else {
! 300: *defaultp = 0;
1.1 root 301: return val;
1.1.1.2 ! root 302: }
! 303: }
! 304:
! 305: void AUD_vlog (const char *cap, const char *fmt, va_list ap)
! 306: {
! 307: if (conf.log_to_monitor) {
! 308: if (cap) {
! 309: term_printf ("%s: ", cap);
! 310: }
! 311:
! 312: term_vprintf (fmt, ap);
! 313: }
! 314: else {
! 315: if (cap) {
! 316: fprintf (stderr, "%s: ", cap);
! 317: }
! 318:
! 319: vfprintf (stderr, fmt, ap);
! 320: }
1.1 root 321: }
322:
323: void AUD_log (const char *cap, const char *fmt, ...)
324: {
325: va_list ap;
1.1.1.2 ! root 326:
1.1 root 327: va_start (ap, fmt);
1.1.1.2 ! root 328: AUD_vlog (cap, fmt, ap);
1.1 root 329: va_end (ap);
330: }
331:
1.1.1.2 ! root 332: static void audio_print_options (const char *prefix,
! 333: struct audio_option *opt)
1.1 root 334: {
1.1.1.2 ! root 335: char *uprefix;
! 336:
! 337: if (!prefix) {
! 338: dolog ("No prefix specified\n");
! 339: return;
! 340: }
! 341:
! 342: if (!opt) {
! 343: dolog ("No options\n");
! 344: return;
! 345: }
! 346:
! 347: uprefix = audio_alloc_prefix (prefix);
! 348:
! 349: for (; opt->name; opt++) {
! 350: const char *state = "default";
! 351: printf (" %s_%s: ", uprefix, opt->name);
! 352:
! 353: if (opt->overridenp && *opt->overridenp) {
! 354: state = "current";
! 355: }
! 356:
! 357: switch (opt->tag) {
! 358: case AUD_OPT_BOOL:
! 359: {
! 360: int *intp = opt->valp;
! 361: printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
! 362: }
! 363: break;
! 364:
! 365: case AUD_OPT_INT:
! 366: {
! 367: int *intp = opt->valp;
! 368: printf ("integer, %s = %d\n", state, *intp);
! 369: }
! 370: break;
! 371:
! 372: case AUD_OPT_FMT:
! 373: {
! 374: audfmt_e *fmtp = opt->valp;
! 375: printf (
! 376: "format, %s = %s, (one of: U8 S8 U16 S16)\n",
! 377: state,
! 378: audio_audfmt_to_string (*fmtp)
! 379: );
! 380: }
! 381: break;
! 382:
! 383: case AUD_OPT_STR:
! 384: {
! 385: const char **strp = opt->valp;
! 386: printf ("string, %s = %s\n",
! 387: state,
! 388: *strp ? *strp : "(not set)");
! 389: }
! 390: break;
! 391:
! 392: default:
! 393: printf ("???\n");
! 394: dolog ("Bad value tag for option %s_%s %d\n",
! 395: uprefix, opt->name, opt->tag);
! 396: break;
! 397: }
! 398: printf (" %s\n", opt->descr);
! 399: }
! 400:
! 401: qemu_free (uprefix);
1.1 root 402: }
403:
1.1.1.2 ! root 404: static void audio_process_options (const char *prefix,
! 405: struct audio_option *opt)
1.1 root 406: {
1.1.1.2 ! root 407: char *optname;
! 408: const char qemu_prefix[] = "QEMU_";
! 409: size_t preflen;
! 410:
! 411: if (audio_bug (AUDIO_FUNC, !prefix)) {
! 412: dolog ("prefix = NULL\n");
! 413: return;
! 414: }
! 415:
! 416: if (audio_bug (AUDIO_FUNC, !opt)) {
! 417: dolog ("opt = NULL\n");
! 418: return;
! 419: }
! 420:
! 421: preflen = strlen (prefix);
! 422:
! 423: for (; opt->name; opt++) {
! 424: size_t len, i;
! 425: int def;
! 426:
! 427: if (!opt->valp) {
! 428: dolog ("Option value pointer for `%s' is not set\n",
! 429: opt->name);
! 430: continue;
! 431: }
! 432:
! 433: len = strlen (opt->name);
! 434: /* len of opt->name + len of prefix + size of qemu_prefix
! 435: * (includes trailing zero) + zero + underscore (on behalf of
! 436: * sizeof) */
! 437: optname = qemu_malloc (len + preflen + sizeof (qemu_prefix) + 1);
! 438: if (!optname) {
! 439: dolog ("Could not allocate memory for option name `%s'\n",
! 440: opt->name);
! 441: continue;
! 442: }
! 443:
! 444: strcpy (optname, qemu_prefix);
! 445:
! 446: /* copy while upper-casing, including trailing zero */
! 447: for (i = 0; i <= preflen; ++i) {
! 448: optname[i + sizeof (qemu_prefix) - 1] = toupper (prefix[i]);
! 449: }
! 450: strcat (optname, "_");
! 451: strcat (optname, opt->name);
! 452:
! 453: def = 1;
! 454: switch (opt->tag) {
! 455: case AUD_OPT_BOOL:
! 456: case AUD_OPT_INT:
! 457: {
! 458: int *intp = opt->valp;
! 459: *intp = audio_get_conf_int (optname, *intp, &def);
! 460: }
! 461: break;
! 462:
! 463: case AUD_OPT_FMT:
! 464: {
! 465: audfmt_e *fmtp = opt->valp;
! 466: *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
! 467: }
! 468: break;
! 469:
! 470: case AUD_OPT_STR:
! 471: {
! 472: const char **strp = opt->valp;
! 473: *strp = audio_get_conf_str (optname, *strp, &def);
! 474: }
! 475: break;
1.1 root 476:
1.1.1.2 ! root 477: default:
! 478: dolog ("Bad value tag for option `%s' - %d\n",
! 479: optname, opt->tag);
! 480: break;
! 481: }
! 482:
! 483: if (!opt->overridenp) {
! 484: opt->overridenp = &opt->overriden;
! 485: }
! 486: *opt->overridenp = !def;
! 487: qemu_free (optname);
! 488: }
! 489: }
! 490:
! 491: static void audio_print_settings (audsettings_t *as)
! 492: {
! 493: dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
! 494:
! 495: switch (as->fmt) {
! 496: case AUD_FMT_S8:
! 497: AUD_log (NULL, "S8");
! 498: break;
! 499: case AUD_FMT_U8:
! 500: AUD_log (NULL, "U8");
! 501: break;
! 502: case AUD_FMT_S16:
! 503: AUD_log (NULL, "S16");
! 504: break;
! 505: case AUD_FMT_U16:
! 506: AUD_log (NULL, "U16");
! 507: break;
! 508: default:
! 509: AUD_log (NULL, "invalid(%d)", as->fmt);
! 510: break;
! 511: }
! 512: AUD_log (NULL, "\n");
! 513: }
! 514:
! 515: static int audio_validate_settigs (audsettings_t *as)
! 516: {
! 517: int invalid;
! 518:
! 519: invalid = as->nchannels != 1 && as->nchannels != 2;
! 520:
! 521: switch (as->fmt) {
! 522: case AUD_FMT_S8:
! 523: case AUD_FMT_U8:
! 524: case AUD_FMT_S16:
! 525: case AUD_FMT_U16:
! 526: break;
! 527: default:
! 528: invalid = 1;
! 529: break;
! 530: }
! 531:
! 532: invalid |= as->freq <= 0;
! 533:
! 534: if (invalid) {
1.1 root 535: return -1;
536: }
537: return 0;
538: }
539:
1.1.1.2 ! root 540: static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as)
1.1 root 541: {
1.1.1.2 ! root 542: int bits = 8, sign = 0;
! 543:
! 544: switch (as->fmt) {
! 545: case AUD_FMT_S8:
! 546: sign = 1;
! 547: case AUD_FMT_U8:
! 548: break;
! 549:
! 550: case AUD_FMT_S16:
! 551: sign = 1;
! 552: case AUD_FMT_U16:
! 553: bits = 16;
! 554: break;
! 555: }
! 556: return info->freq == as->freq
! 557: && info->nchannels == as->nchannels
! 558: && info->sign == sign
! 559: && info->bits == bits;
1.1 root 560: }
561:
1.1.1.2 ! root 562: void audio_pcm_init_info (
! 563: struct audio_pcm_info *info,
! 564: audsettings_t *as,
! 565: int swap_endian
! 566: )
1.1 root 567: {
568: int bits = 8, sign = 0;
569:
1.1.1.2 ! root 570: switch (as->fmt) {
1.1 root 571: case AUD_FMT_S8:
572: sign = 1;
573: case AUD_FMT_U8:
574: break;
575:
576: case AUD_FMT_S16:
577: sign = 1;
578: case AUD_FMT_U16:
579: bits = 16;
580: break;
581: }
582:
1.1.1.2 ! root 583: info->freq = as->freq;
! 584: info->bits = bits;
! 585: info->sign = sign;
! 586: info->nchannels = as->nchannels;
! 587: info->shift = (as->nchannels == 2) + (bits == 16);
! 588: info->align = (1 << info->shift) - 1;
! 589: info->bytes_per_second = info->freq << info->shift;
! 590: info->swap_endian = swap_endian;
1.1 root 591: }
592:
1.1.1.2 ! root 593: void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
1.1 root 594: {
1.1.1.2 ! root 595: if (!len) {
! 596: return;
! 597: }
! 598:
! 599: if (info->sign) {
! 600: memset (buf, len << info->shift, 0x00);
! 601: }
! 602: else {
! 603: if (info->bits == 8) {
! 604: memset (buf, len << info->shift, 0x80);
! 605: }
! 606: else {
! 607: int i;
! 608: uint16_t *p = buf;
! 609: int shift = info->nchannels - 1;
! 610: short s = INT16_MAX;
! 611:
! 612: if (info->swap_endian) {
! 613: s = bswap16 (s);
! 614: }
! 615:
! 616: for (i = 0; i < len << shift; i++) {
! 617: p[i] = s;
! 618: }
! 619: }
! 620: }
1.1 root 621: }
622:
1.1.1.2 ! root 623: /*
! 624: * Hard voice (capture)
! 625: */
! 626: static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
1.1 root 627: {
1.1.1.2 ! root 628: SWVoiceIn *sw;
! 629: int m = hw->total_samples_captured;
! 630:
! 631: for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
! 632: if (sw->active) {
! 633: m = audio_MIN (m, sw->total_hw_samples_acquired);
! 634: }
1.1 root 635: }
1.1.1.2 ! root 636: return m;
1.1 root 637: }
638:
1.1.1.2 ! root 639: int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
1.1 root 640: {
1.1.1.2 ! root 641: int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
! 642: if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
! 643: dolog ("live=%d hw->samples=%d\n", live, hw->samples);
! 644: return 0;
! 645: }
! 646: return live;
1.1 root 647: }
648:
1.1.1.2 ! root 649: /*
! 650: * Soft voice (capture)
! 651: */
! 652: static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
1.1 root 653: {
1.1.1.2 ! root 654: HWVoiceIn *hw = sw->hw;
! 655: int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
! 656: int rpos;
1.1 root 657:
1.1.1.2 ! root 658: if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
! 659: dolog ("live=%d hw->samples=%d\n", live, hw->samples);
! 660: return 0;
1.1 root 661: }
662:
1.1.1.2 ! root 663: rpos = hw->wpos - live;
! 664: if (rpos >= 0) {
! 665: return rpos;
! 666: }
! 667: else {
! 668: return hw->samples + rpos;
! 669: }
1.1 root 670: }
671:
1.1.1.2 ! root 672: int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
1.1 root 673: {
1.1.1.2 ! root 674: HWVoiceIn *hw = sw->hw;
! 675: int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
! 676: st_sample_t *src, *dst = sw->buf;
1.1 root 677:
1.1.1.2 ! root 678: rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
! 679:
! 680: live = hw->total_samples_captured - sw->total_hw_samples_acquired;
! 681: if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
! 682: dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
! 683: return 0;
! 684: }
! 685:
! 686: samples = size >> sw->info.shift;
! 687: if (!live) {
! 688: return 0;
! 689: }
! 690:
! 691: swlim = (live * sw->ratio) >> 32;
! 692: swlim = audio_MIN (swlim, samples);
! 693:
! 694: while (swlim) {
! 695: src = hw->conv_buf + rpos;
! 696: isamp = hw->wpos - rpos;
! 697: /* XXX: <= ? */
! 698: if (isamp <= 0) {
! 699: isamp = hw->samples - rpos;
1.1 root 700: }
1.1.1.2 ! root 701:
! 702: if (!isamp) {
! 703: break;
! 704: }
! 705: osamp = swlim;
! 706:
! 707: if (audio_bug (AUDIO_FUNC, osamp < 0)) {
! 708: dolog ("osamp=%d\n", osamp);
! 709: return 0;
! 710: }
! 711:
! 712: st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
! 713: swlim -= osamp;
! 714: rpos = (rpos + isamp) % hw->samples;
! 715: dst += osamp;
! 716: ret += osamp;
! 717: total += isamp;
1.1 root 718: }
719:
1.1.1.2 ! root 720: sw->clip (buf, sw->buf, ret);
! 721: sw->total_hw_samples_acquired += total;
! 722: return ret << sw->info.shift;
1.1 root 723: }
724:
1.1.1.2 ! root 725: /*
! 726: * Hard voice (playback)
! 727: */
! 728: static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
1.1 root 729: {
1.1.1.2 ! root 730: SWVoiceOut *sw;
! 731: int m = INT_MAX;
! 732: int nb_live = 0;
1.1 root 733:
1.1.1.2 ! root 734: for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
! 735: if (sw->active || !sw->empty) {
! 736: m = audio_MIN (m, sw->total_hw_samples_mixed);
! 737: nb_live += 1;
1.1 root 738: }
739: }
1.1.1.2 ! root 740:
! 741: *nb_livep = nb_live;
! 742: return m;
1.1 root 743: }
744:
1.1.1.2 ! root 745: int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live)
1.1 root 746: {
1.1.1.2 ! root 747: int smin;
1.1 root 748:
1.1.1.2 ! root 749: smin = audio_pcm_hw_find_min_out (hw, nb_live);
1.1 root 750:
1.1.1.2 ! root 751: if (!*nb_live) {
! 752: return 0;
! 753: }
! 754: else {
! 755: int live = smin;
1.1 root 756:
1.1.1.2 ! root 757: if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
! 758: dolog ("live=%d hw->samples=%d\n", live, hw->samples);
! 759: return 0;
1.1 root 760: }
1.1.1.2 ! root 761: return live;
1.1 root 762: }
763: }
764:
1.1.1.2 ! root 765: int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
! 766: {
! 767: int nb_live;
! 768: int live;
! 769:
! 770: live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
! 771: if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
! 772: dolog ("live=%d hw->samples=%d\n", live, hw->samples);
! 773: return 0;
! 774: }
! 775: return live;
! 776: }
! 777:
! 778: /*
! 779: * Soft voice (playback)
! 780: */
! 781: int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
1.1 root 782: {
783: int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
1.1.1.2 ! root 784: int ret = 0, pos = 0, total = 0;
! 785:
! 786: if (!sw) {
1.1 root 787: return size;
1.1.1.2 ! root 788: }
1.1 root 789:
790: hwsamples = sw->hw->samples;
791:
1.1.1.2 ! root 792: live = sw->total_hw_samples_mixed;
! 793: if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
! 794: dolog ("live=%d hw->samples=%d\n", live, hwsamples);
! 795: return 0;
1.1 root 796: }
1.1.1.2 ! root 797:
! 798: if (live == hwsamples) {
! 799: return 0;
! 800: }
! 801:
! 802: wpos = (sw->hw->rpos + live) % hwsamples;
! 803: samples = size >> sw->info.shift;
! 804:
1.1 root 805: dead = hwsamples - live;
1.1.1.2 ! root 806: swlim = ((int64_t) dead << 32) / sw->ratio;
1.1 root 807: swlim = audio_MIN (swlim, samples);
1.1.1.2 ! root 808: if (swlim) {
! 809: sw->conv (sw->buf, buf, swlim, &sw->vol);
! 810: }
1.1 root 811:
812: while (swlim) {
813: dead = hwsamples - live;
814: left = hwsamples - wpos;
815: blck = audio_MIN (dead, left);
816: if (!blck) {
817: break;
818: }
819: isamp = swlim;
820: osamp = blck;
1.1.1.2 ! root 821: st_rate_flow_mix (
! 822: sw->rate,
! 823: sw->buf + pos,
! 824: sw->hw->mix_buf + wpos,
! 825: &isamp,
! 826: &osamp
! 827: );
1.1 root 828: ret += isamp;
829: swlim -= isamp;
830: pos += isamp;
831: live += osamp;
1.1.1.2 ! root 832: wpos = (wpos + osamp) % hwsamples;
! 833: total += osamp;
1.1 root 834: }
835:
1.1.1.2 ! root 836: sw->total_hw_samples_mixed += total;
! 837: sw->empty = sw->total_hw_samples_mixed == 0;
1.1 root 838:
1.1.1.2 ! root 839: #ifdef DEBUG_OUT
! 840: dolog (
! 841: "%s: write size %d ret %d total sw %d\n",
! 842: SW_NAME (sw),
! 843: size >> sw->info.shift,
! 844: ret,
! 845: sw->total_hw_samples_mixed
! 846: );
! 847: #endif
1.1 root 848:
1.1.1.2 ! root 849: return ret << sw->info.shift;
1.1 root 850: }
851:
1.1.1.2 ! root 852: #ifdef DEBUG_AUDIO
! 853: static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
1.1 root 854: {
1.1.1.2 ! root 855: dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
! 856: cap, info->bits, info->sign, info->freq, info->nchannels);
1.1 root 857: }
1.1.1.2 ! root 858: #endif
1.1 root 859:
1.1.1.2 ! root 860: #define DAC
! 861: #include "audio_template.h"
! 862: #undef DAC
! 863: #include "audio_template.h"
1.1 root 864:
1.1.1.2 ! root 865: int AUD_write (SWVoiceOut *sw, void *buf, int size)
1.1 root 866: {
1.1.1.2 ! root 867: int bytes;
! 868:
! 869: if (!sw) {
! 870: /* XXX: Consider options */
! 871: return size;
1.1 root 872: }
873:
1.1.1.2 ! root 874: if (!sw->hw->enabled) {
! 875: dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
! 876: return 0;
1.1 root 877: }
1.1.1.2 ! root 878:
! 879: bytes = sw->hw->pcm_ops->write (sw, buf, size);
! 880: return bytes;
1.1 root 881: }
882:
1.1.1.2 ! root 883: int AUD_read (SWVoiceIn *sw, void *buf, int size)
1.1 root 884: {
1.1.1.2 ! root 885: int bytes;
! 886:
! 887: if (!sw) {
! 888: /* XXX: Consider options */
! 889: return size;
1.1 root 890: }
891:
1.1.1.2 ! root 892: if (!sw->hw->enabled) {
! 893: dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
! 894: return 0;
1.1 root 895: }
1.1.1.2 ! root 896:
! 897: bytes = sw->hw->pcm_ops->read (sw, buf, size);
! 898: return bytes;
1.1 root 899: }
900:
1.1.1.2 ! root 901: int AUD_get_buffer_size_out (SWVoiceOut *sw)
1.1 root 902: {
1.1.1.2 ! root 903: return sw->hw->samples << sw->hw->info.shift;
1.1 root 904: }
905:
1.1.1.2 ! root 906: void AUD_set_active_out (SWVoiceOut *sw, int on)
1.1 root 907: {
1.1.1.2 ! root 908: HWVoiceOut *hw;
1.1 root 909:
1.1.1.2 ! root 910: if (!sw) {
! 911: return;
1.1 root 912: }
913:
1.1.1.2 ! root 914: hw = sw->hw;
! 915: if (sw->active != on) {
! 916: SWVoiceOut *temp_sw;
1.1 root 917:
1.1.1.2 ! root 918: if (on) {
! 919: int total;
1.1 root 920:
1.1.1.2 ! root 921: hw->pending_disable = 0;
! 922: if (!hw->enabled) {
! 923: hw->enabled = 1;
! 924: hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
! 925: }
1.1 root 926:
1.1.1.2 ! root 927: if (sw->empty) {
! 928: total = 0;
! 929: }
1.1 root 930: }
1.1.1.2 ! root 931: else {
! 932: if (hw->enabled) {
! 933: int nb_active = 0;
! 934:
! 935: for (temp_sw = hw->sw_head.lh_first; temp_sw;
! 936: temp_sw = temp_sw->entries.le_next) {
! 937: nb_active += temp_sw->active != 0;
! 938: }
1.1 root 939:
1.1.1.2 ! root 940: hw->pending_disable = nb_active == 1;
! 941: }
! 942: }
! 943: sw->active = on;
! 944: }
1.1 root 945: }
946:
1.1.1.2 ! root 947: void AUD_set_active_in (SWVoiceIn *sw, int on)
1.1 root 948: {
1.1.1.2 ! root 949: HWVoiceIn *hw;
1.1 root 950:
1.1.1.2 ! root 951: if (!sw) {
! 952: return;
! 953: }
1.1 root 954:
1.1.1.2 ! root 955: hw = sw->hw;
! 956: if (sw->active != on) {
! 957: SWVoiceIn *temp_sw;
1.1 root 958:
1.1.1.2 ! root 959: if (on) {
! 960: if (!hw->enabled) {
! 961: hw->enabled = 1;
! 962: hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
! 963: }
! 964: sw->total_hw_samples_acquired = hw->total_samples_captured;
1.1 root 965: }
1.1.1.2 ! root 966: else {
! 967: if (hw->enabled) {
! 968: int nb_active = 0;
! 969:
! 970: for (temp_sw = hw->sw_head.lh_first; temp_sw;
! 971: temp_sw = temp_sw->entries.le_next) {
! 972: nb_active += temp_sw->active != 0;
! 973: }
1.1 root 974:
1.1.1.2 ! root 975: if (nb_active == 1) {
! 976: hw->enabled = 0;
! 977: hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
! 978: }
1.1 root 979: }
980: }
1.1.1.2 ! root 981: sw->active = on;
1.1 root 982: }
1.1.1.2 ! root 983: }
! 984:
! 985: static int audio_get_avail (SWVoiceIn *sw)
! 986: {
! 987: int live;
! 988:
! 989: if (!sw) {
! 990: return 0;
1.1 root 991: }
1.1.1.2 ! root 992:
! 993: live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
! 994: if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
! 995: dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
! 996: return 0;
! 997: }
! 998:
! 999: ldebug (
! 1000: "%s: get_avail live %d ret %lld\n",
! 1001: SW_NAME (sw),
! 1002: live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
! 1003: );
! 1004:
! 1005: return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
1.1 root 1006: }
1007:
1.1.1.2 ! root 1008: static int audio_get_free (SWVoiceOut *sw)
1.1 root 1009: {
1.1.1.2 ! root 1010: int live, dead;
1.1 root 1011:
1.1.1.2 ! root 1012: if (!sw) {
! 1013: return 0;
! 1014: }
1.1 root 1015:
1.1.1.2 ! root 1016: live = sw->total_hw_samples_mixed;
1.1 root 1017:
1.1.1.2 ! root 1018: if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
! 1019: dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
! 1020: return 0;
! 1021: }
1.1 root 1022:
1.1.1.2 ! root 1023: dead = sw->hw->samples - live;
1.1 root 1024:
1.1.1.2 ! root 1025: #ifdef DEBUG_OUT
! 1026: dolog ("%s: get_free live %d dead %d ret %lld\n",
! 1027: SW_NAME (sw),
! 1028: live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
! 1029: #endif
1.1 root 1030:
1.1.1.2 ! root 1031: return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
1.1 root 1032: }
1033:
1.1.1.2 ! root 1034: static void audio_run_out (AudioState *s)
1.1 root 1035: {
1.1.1.2 ! root 1036: HWVoiceOut *hw = NULL;
! 1037: SWVoiceOut *sw;
1.1 root 1038:
1.1.1.2 ! root 1039: while ((hw = audio_pcm_hw_find_any_enabled_out (s, hw))) {
! 1040: int played;
! 1041: int live, free, nb_live, cleanup_required;
1.1 root 1042:
1.1.1.2 ! root 1043: live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
! 1044: if (!nb_live) {
! 1045: live = 0;
! 1046: }
1.1 root 1047:
1.1.1.2 ! root 1048: if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
! 1049: dolog ("live=%d hw->samples=%d\n", live, hw->samples);
! 1050: continue;
! 1051: }
! 1052:
! 1053: if (hw->pending_disable && !nb_live) {
! 1054: #ifdef DEBUG_OUT
! 1055: dolog ("Disabling voice\n");
! 1056: #endif
! 1057: hw->enabled = 0;
! 1058: hw->pending_disable = 0;
! 1059: hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
! 1060: continue;
! 1061: }
1.1 root 1062:
1.1.1.2 ! root 1063: if (!live) {
! 1064: for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
! 1065: if (sw->active) {
! 1066: free = audio_get_free (sw);
! 1067: if (free > 0) {
! 1068: sw->callback.fn (sw->callback.opaque, free);
! 1069: }
! 1070: }
1.1 root 1071: }
1.1.1.2 ! root 1072: continue;
1.1 root 1073: }
1.1.1.2 ! root 1074:
! 1075: played = hw->pcm_ops->run_out (hw);
! 1076: if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
! 1077: dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
! 1078: hw->rpos, hw->samples, played);
! 1079: hw->rpos = 0;
1.1 root 1080: }
1081:
1.1.1.2 ! root 1082: #ifdef DEBUG_OUT
! 1083: dolog ("played=%d\n", played);
! 1084: #endif
1.1 root 1085:
1.1.1.2 ! root 1086: if (played) {
! 1087: hw->ts_helper += played;
! 1088: }
1.1 root 1089:
1.1.1.2 ! root 1090: cleanup_required = 0;
! 1091: for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
! 1092: if (!sw->active && sw->empty) {
! 1093: continue;
! 1094: }
1.1 root 1095:
1.1.1.2 ! root 1096: if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
! 1097: dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
! 1098: played, sw->total_hw_samples_mixed);
! 1099: played = sw->total_hw_samples_mixed;
! 1100: }
1.1 root 1101:
1.1.1.2 ! root 1102: sw->total_hw_samples_mixed -= played;
1.1 root 1103:
1.1.1.2 ! root 1104: if (!sw->total_hw_samples_mixed) {
! 1105: sw->empty = 1;
! 1106: cleanup_required |= !sw->active && !sw->callback.fn;
! 1107: }
1.1 root 1108:
1.1.1.2 ! root 1109: if (sw->active) {
! 1110: free = audio_get_free (sw);
! 1111: if (free > 0) {
! 1112: sw->callback.fn (sw->callback.opaque, free);
! 1113: }
1.1 root 1114: }
1115: }
1116:
1.1.1.2 ! root 1117: if (cleanup_required) {
! 1118: restart:
! 1119: for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
! 1120: if (!sw->active && !sw->callback.fn) {
! 1121: #ifdef DEBUG_PLIVE
! 1122: dolog ("Finishing with old voice\n");
! 1123: #endif
! 1124: audio_close_out (s, sw);
! 1125: goto restart; /* play it safe */
1.1 root 1126: }
1127: }
1128: }
1129: }
1130: }
1131:
1.1.1.2 ! root 1132: static void audio_run_in (AudioState *s)
1.1 root 1133: {
1.1.1.2 ! root 1134: HWVoiceIn *hw = NULL;
1.1 root 1135:
1.1.1.2 ! root 1136: while ((hw = audio_pcm_hw_find_any_enabled_in (s, hw))) {
! 1137: SWVoiceIn *sw;
! 1138: int captured, min;
1.1 root 1139:
1.1.1.2 ! root 1140: captured = hw->pcm_ops->run_in (hw);
1.1 root 1141:
1.1.1.2 ! root 1142: min = audio_pcm_hw_find_min_in (hw);
! 1143: hw->total_samples_captured += captured - min;
! 1144: hw->ts_helper += captured;
1.1 root 1145:
1.1.1.2 ! root 1146: for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
! 1147: sw->total_hw_samples_acquired -= min;
1.1 root 1148:
1.1.1.2 ! root 1149: if (sw->active) {
! 1150: int avail;
1.1 root 1151:
1.1.1.2 ! root 1152: avail = audio_get_avail (sw);
! 1153: if (avail > 0) {
! 1154: sw->callback.fn (sw->callback.opaque, avail);
! 1155: }
! 1156: }
! 1157: }
! 1158: }
1.1 root 1159: }
1160:
1.1.1.2 ! root 1161: static void audio_timer (void *opaque)
1.1 root 1162: {
1.1.1.2 ! root 1163: AudioState *s = opaque;
! 1164:
! 1165: audio_run_out (s);
! 1166: audio_run_in (s);
! 1167:
! 1168: qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
1.1 root 1169: }
1170:
1.1.1.2 ! root 1171: static struct audio_option audio_options[] = {
! 1172: /* DAC */
! 1173: {"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_out.enabled,
! 1174: "Use fixed settings for host DAC", NULL, 0},
1.1 root 1175:
1.1.1.2 ! root 1176: {"DAC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_out.settings.freq,
! 1177: "Frequency for fixed host DAC", NULL, 0},
1.1 root 1178:
1.1.1.2 ! root 1179: {"DAC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_out.settings.fmt,
! 1180: "Format for fixed host DAC", NULL, 0},
1.1 root 1181:
1.1.1.2 ! root 1182: {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_out.settings.nchannels,
! 1183: "Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0},
1.1 root 1184:
1.1.1.2 ! root 1185: {"DAC_VOICES", AUD_OPT_INT, &conf.fixed_out.nb_voices,
! 1186: "Number of voices for DAC", NULL, 0},
! 1187:
! 1188: /* ADC */
! 1189: {"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_in.enabled,
! 1190: "Use fixed settings for host ADC", NULL, 0},
! 1191:
! 1192: {"ADC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_in.settings.freq,
! 1193: "Frequency for fixed host ADC", NULL, 0},
! 1194:
! 1195: {"ADC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_in.settings.fmt,
! 1196: "Format for fixed host ADC", NULL, 0},
! 1197:
! 1198: {"ADC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_in.settings.nchannels,
! 1199: "Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0},
! 1200:
! 1201: {"ADC_VOICES", AUD_OPT_INT, &conf.fixed_in.nb_voices,
! 1202: "Number of voices for ADC", NULL, 0},
! 1203:
! 1204: /* Misc */
! 1205: {"TIMER_PERIOD", AUD_OPT_INT, &conf.period.hz,
! 1206: "Timer period in HZ (0 - use lowest possible)", NULL, 0},
! 1207:
! 1208: {"PLIVE", AUD_OPT_BOOL, &conf.plive,
! 1209: "(undocumented)", NULL, 0},
! 1210:
! 1211: {"LOG_TO_MONITOR", AUD_OPT_BOOL, &conf.log_to_monitor,
! 1212: "print logging messages to montior instead of stderr", NULL, 0},
! 1213:
! 1214: {NULL, 0, NULL, NULL, NULL, 0}
! 1215: };
! 1216:
! 1217: static void audio_pp_nb_voices (const char *typ, int nb)
! 1218: {
! 1219: switch (nb) {
! 1220: case 0:
! 1221: printf ("Does not support %s\n", typ);
! 1222: break;
! 1223: case 1:
! 1224: printf ("One %s voice\n", typ);
! 1225: break;
! 1226: case INT_MAX:
! 1227: printf ("Theoretically supports many %s voices\n", typ);
! 1228: break;
! 1229: default:
! 1230: printf ("Theoretically supports upto %d %s voices\n", nb, typ);
! 1231: break;
1.1 root 1232: }
1.1.1.2 ! root 1233:
1.1 root 1234: }
1235:
1.1.1.2 ! root 1236: void AUD_help (void)
1.1 root 1237: {
1.1.1.2 ! root 1238: size_t i;
1.1 root 1239:
1.1.1.2 ! root 1240: audio_process_options ("AUDIO", audio_options);
! 1241: for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
! 1242: struct audio_driver *d = drvtab[i];
! 1243: if (d->options) {
! 1244: audio_process_options (d->name, d->options);
1.1 root 1245: }
1246: }
1247:
1.1.1.2 ! root 1248: printf ("Audio options:\n");
! 1249: audio_print_options ("AUDIO", audio_options);
! 1250: printf ("\n");
! 1251:
! 1252: printf ("Available drivers:\n");
! 1253:
! 1254: for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
! 1255: struct audio_driver *d = drvtab[i];
! 1256:
! 1257: printf ("Name: %s\n", d->name);
! 1258: printf ("Description: %s\n", d->descr);
! 1259:
! 1260: audio_pp_nb_voices ("playback", d->max_voices_out);
! 1261: audio_pp_nb_voices ("capture", d->max_voices_in);
! 1262:
! 1263: if (d->options) {
! 1264: printf ("Options:\n");
! 1265: audio_print_options (d->name, d->options);
1.1 root 1266: }
1267: else {
1.1.1.2 ! root 1268: printf ("No options\n");
1.1 root 1269: }
1.1.1.2 ! root 1270: printf ("\n");
1.1 root 1271: }
1272:
1.1.1.2 ! root 1273: printf (
! 1274: "Options are settable through environment variables.\n"
! 1275: "Example:\n"
! 1276: #ifdef _WIN32
! 1277: " set QEMU_AUDIO_DRV=wav\n"
! 1278: " set QEMU_WAV_PATH=c:\\tune.wav\n"
! 1279: #else
! 1280: " export QEMU_AUDIO_DRV=wav\n"
! 1281: " export QEMU_WAV_PATH=$HOME/tune.wav\n"
! 1282: "(for csh replace export with setenv in the above)\n"
1.1 root 1283: #endif
1.1.1.2 ! root 1284: " qemu ...\n\n"
! 1285: );
! 1286: }
1.1 root 1287:
1.1.1.2 ! root 1288: static int audio_driver_init (AudioState *s, struct audio_driver *drv)
1.1 root 1289: {
1.1.1.2 ! root 1290: if (drv->options) {
! 1291: audio_process_options (drv->name, drv->options);
1.1 root 1292: }
1.1.1.2 ! root 1293: s->drv_opaque = drv->init ();
! 1294:
! 1295: if (s->drv_opaque) {
! 1296: audio_init_nb_voices_out (s, drv);
! 1297: audio_init_nb_voices_in (s, drv);
! 1298: s->drv = drv;
1.1 root 1299: return 0;
1300: }
1.1.1.2 ! root 1301: else {
! 1302: dolog ("Could not init `%s' audio driver\n", drv->name);
! 1303: return -1;
! 1304: }
1.1 root 1305: }
1306:
1.1.1.2 ! root 1307: static void audio_vm_change_state_handler (void *opaque, int running)
1.1 root 1308: {
1.1.1.2 ! root 1309: AudioState *s = opaque;
! 1310: HWVoiceOut *hwo = NULL;
! 1311: HWVoiceIn *hwi = NULL;
! 1312: int op = running ? VOICE_ENABLE : VOICE_DISABLE;
1.1 root 1313:
1.1.1.2 ! root 1314: while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
! 1315: hwo->pcm_ops->ctl_out (hwo, op);
! 1316: }
1.1 root 1317:
1.1.1.2 ! root 1318: while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
! 1319: hwi->pcm_ops->ctl_in (hwi, op);
1.1 root 1320: }
1321: }
1322:
1323: static void audio_atexit (void)
1324: {
1.1.1.2 ! root 1325: AudioState *s = &glob_audio_state;
! 1326: HWVoiceOut *hwo = NULL;
! 1327: HWVoiceIn *hwi = NULL;
1.1 root 1328:
1.1.1.2 ! root 1329: while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
! 1330: hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
! 1331: hwo->pcm_ops->fini_out (hwo);
! 1332: }
! 1333:
! 1334: while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
! 1335: hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
! 1336: hwi->pcm_ops->fini_in (hwi);
! 1337: }
1.1 root 1338:
1.1.1.2 ! root 1339: if (s->drv) {
! 1340: s->drv->fini (s->drv_opaque);
1.1 root 1341: }
1342: }
1343:
1344: static void audio_save (QEMUFile *f, void *opaque)
1345: {
1.1.1.2 ! root 1346: (void) f;
! 1347: (void) opaque;
1.1 root 1348: }
1349:
1350: static int audio_load (QEMUFile *f, void *opaque, int version_id)
1351: {
1.1.1.2 ! root 1352: (void) f;
! 1353: (void) opaque;
! 1354:
! 1355: if (version_id != 1) {
1.1 root 1356: return -EINVAL;
1.1.1.2 ! root 1357: }
1.1 root 1358:
1359: return 0;
1360: }
1361:
1.1.1.2 ! root 1362: void AUD_register_card (AudioState *s, const char *name, QEMUSoundCard *card)
! 1363: {
! 1364: card->audio = s;
! 1365: card->name = qemu_strdup (name);
! 1366: memset (&card->entries, 0, sizeof (card->entries));
! 1367: LIST_INSERT_HEAD (&s->card_head, card, entries);
! 1368: }
! 1369:
! 1370: void AUD_remove_card (QEMUSoundCard *card)
1.1 root 1371: {
1.1.1.2 ! root 1372: LIST_REMOVE (card, entries);
! 1373: card->audio = NULL;
! 1374: qemu_free (card->name);
! 1375: }
! 1376:
! 1377: AudioState *AUD_init (void)
! 1378: {
! 1379: size_t i;
1.1 root 1380: int done = 0;
1381: const char *drvname;
1.1.1.2 ! root 1382: AudioState *s = &glob_audio_state;
! 1383:
! 1384: LIST_INIT (&s->hw_head_out);
! 1385: LIST_INIT (&s->hw_head_in);
! 1386: atexit (audio_atexit);
! 1387:
! 1388: s->ts = qemu_new_timer (vm_clock, audio_timer, s);
! 1389: if (!s->ts) {
! 1390: dolog ("Could not create audio timer\n");
! 1391: return NULL;
! 1392: }
! 1393:
! 1394: audio_process_options ("AUDIO", audio_options);
! 1395:
! 1396: s->nb_hw_voices_out = conf.fixed_out.nb_voices;
! 1397: s->nb_hw_voices_in = conf.fixed_in.nb_voices;
! 1398:
! 1399: if (s->nb_hw_voices_out <= 0) {
! 1400: dolog ("Bogus number of playback voices %d, setting to 1\n",
! 1401: s->nb_hw_voices_out);
! 1402: s->nb_hw_voices_out = 1;
! 1403: }
1.1 root 1404:
1.1.1.2 ! root 1405: if (s->nb_hw_voices_in <= 0) {
! 1406: dolog ("Bogus number of capture voices %d, setting to 0\n",
! 1407: s->nb_hw_voices_in);
! 1408: s->nb_hw_voices_in = 0;
! 1409: }
! 1410:
! 1411: {
! 1412: int def;
! 1413: drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
1.1 root 1414: }
1415:
1416: if (drvname) {
1417: int found = 0;
1.1.1.2 ! root 1418:
1.1 root 1419: for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1420: if (!strcmp (drvname, drvtab[i]->name)) {
1.1.1.2 ! root 1421: done = !audio_driver_init (s, drvtab[i]);
1.1 root 1422: found = 1;
1423: break;
1424: }
1425: }
1.1.1.2 ! root 1426:
1.1 root 1427: if (!found) {
1428: dolog ("Unknown audio driver `%s'\n", drvname);
1.1.1.2 ! root 1429: dolog ("Run with -audio-help to list available drivers\n");
1.1 root 1430: }
1431: }
1432:
1433: if (!done) {
1434: for (i = 0; !done && i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
1.1.1.2 ! root 1435: if (drvtab[i]->can_be_default) {
! 1436: done = !audio_driver_init (s, drvtab[i]);
! 1437: }
1.1 root 1438: }
1439: }
1440:
1441: if (!done) {
1.1.1.2 ! root 1442: done = !audio_driver_init (s, &no_audio_driver);
! 1443: if (!done) {
! 1444: dolog ("Could not initialize audio subsystem\n");
! 1445: }
! 1446: else {
! 1447: dolog ("warning: Using timer based audio emulation\n");
! 1448: }
! 1449: }
! 1450:
! 1451: if (done) {
! 1452: VMChangeStateEntry *e;
! 1453:
! 1454: if (conf.period.hz <= 0) {
! 1455: if (conf.period.hz < 0) {
! 1456: dolog ("warning: Timer period is negative - %d "
! 1457: "treating as zero\n",
! 1458: conf.period.hz);
! 1459: }
! 1460: conf.period.ticks = 1;
! 1461: }
! 1462: else {
! 1463: conf.period.ticks = ticks_per_sec / conf.period.hz;
! 1464: }
! 1465:
! 1466: e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
! 1467: if (!e) {
! 1468: dolog ("warning: Could not register change state handler\n"
! 1469: "(Audio can continue looping even after stopping the VM)\n");
! 1470: }
1.1 root 1471: }
1.1.1.2 ! root 1472: else {
! 1473: qemu_del_timer (s->ts);
! 1474: return NULL;
! 1475: }
! 1476:
! 1477: LIST_INIT (&s->card_head);
! 1478: register_savevm ("audio", 0, 1, audio_save, audio_load, s);
! 1479: qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
! 1480: return s;
1.1 root 1481: }
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