audio.c 47.9 KB
Newer Older
bellard's avatar
bellard committed
1 2
/*
 * QEMU Audio subsystem
3 4 5
 *
 * Copyright (c) 2003-2005 Vassili Karpov (malc)
 *
bellard's avatar
bellard committed
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
pbrook's avatar
pbrook committed
24 25 26 27 28
#include "hw/hw.h"
#include "audio.h"
#include "console.h"
#include "qemu-timer.h"
#include "sysemu.h"
bellard's avatar
bellard committed
29

30 31
#define AUDIO_CAP "audio"
#include "audio_int.h"
bellard's avatar
bellard committed
32

33 34 35
/* #define DEBUG_PLIVE */
/* #define DEBUG_LIVE */
/* #define DEBUG_OUT */
36
/* #define DEBUG_CAPTURE */
bellard's avatar
bellard committed
37

bellard's avatar
bellard committed
38 39
#define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown"

40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61
static struct audio_driver *drvtab[] = {
#ifdef CONFIG_OSS
    &oss_audio_driver,
#endif
#ifdef CONFIG_ALSA
    &alsa_audio_driver,
#endif
#ifdef CONFIG_COREAUDIO
    &coreaudio_audio_driver,
#endif
#ifdef CONFIG_DSOUND
    &dsound_audio_driver,
#endif
#ifdef CONFIG_FMOD
    &fmod_audio_driver,
#endif
#ifdef CONFIG_SDL
    &sdl_audio_driver,
#endif
    &no_audio_driver,
    &wav_audio_driver
};
bellard's avatar
bellard committed
62

bellard's avatar
bellard committed
63 64 65 66 67 68 69 70 71 72 73 74 75 76 77
struct fixed_settings {
    int enabled;
    int nb_voices;
    int greedy;
    audsettings_t settings;
};

static struct {
    struct fixed_settings fixed_out;
    struct fixed_settings fixed_in;
    union {
        int hz;
        int64_t ticks;
    } period;
    int plive;
bellard's avatar
bellard committed
78
    int log_to_monitor;
bellard's avatar
bellard committed
79 80 81 82 83 84 85 86
} conf = {
    {                           /* DAC fixed settings */
        1,                      /* enabled */
        1,                      /* nb_voices */
        1,                      /* greedy */
        {
            44100,              /* freq */
            2,                  /* nchannels */
87 88
            AUD_FMT_S16,        /* fmt */
            AUDIO_HOST_ENDIANNESS
bellard's avatar
bellard committed
89 90 91 92 93 94 95 96 97 98
        }
    },

    {                           /* ADC fixed settings */
        1,                      /* enabled */
        1,                      /* nb_voices */
        1,                      /* greedy */
        {
            44100,              /* freq */
            2,                  /* nchannels */
99 100
            AUD_FMT_S16,        /* fmt */
            AUDIO_HOST_ENDIANNESS
bellard's avatar
bellard committed
101 102 103
        }
    },

104
    { 0 },                      /* period */
bellard's avatar
bellard committed
105
    0,                          /* plive */
bellard's avatar
bellard committed
106
    0                           /* log_to_monitor */
107 108
};

bellard's avatar
bellard committed
109 110
static AudioState glob_audio_state;

111 112 113 114 115 116 117 118 119
volume_t nominal_volume = {
    0,
#ifdef FLOAT_MIXENG
    1.0,
    1.0
#else
    UINT_MAX,
    UINT_MAX
#endif
bellard's avatar
bellard committed
120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138
};

/* http://www.df.lth.se/~john_e/gems/gem002d.html */
/* http://www.multi-platforms.com/Tips/PopCount.htm */
uint32_t popcount (uint32_t u)
{
    u = ((u&0x55555555) + ((u>>1)&0x55555555));
    u = ((u&0x33333333) + ((u>>2)&0x33333333));
    u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
    u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
    u = ( u&0x0000ffff) + (u>>16);
    return u;
}

inline uint32_t lsbindex (uint32_t u)
{
    return popcount ((u&-u)-1);
}

139 140 141 142
#ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
#error No its not
#else
int audio_bug (const char *funcname, int cond)
bellard's avatar
bellard committed
143
{
144 145 146
    if (cond) {
        static int shown;

147
        AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168
        if (!shown) {
            shown = 1;
            AUD_log (NULL, "Save all your work and restart without audio\n");
            AUD_log (NULL, "Please send bug report to malc@pulsesoft.com\n");
            AUD_log (NULL, "I am sorry\n");
        }
        AUD_log (NULL, "Context:\n");

#if defined AUDIO_BREAKPOINT_ON_BUG
#  if defined HOST_I386
#    if defined __GNUC__
        __asm__ ("int3");
#    elif defined _MSC_VER
        _asm _emit 0xcc;
#    else
        abort ();
#    endif
#  else
        abort ();
#  endif
#endif
bellard's avatar
bellard committed
169 170
    }

171
    return cond;
bellard's avatar
bellard committed
172
}
173
#endif
bellard's avatar
bellard committed
174

175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193
static inline int audio_bits_to_index (int bits)
{
    switch (bits) {
    case 8:
        return 0;

    case 16:
        return 1;

    case 32:
        return 2;

    default:
        audio_bug ("bits_to_index", 1);
        AUD_log (NULL, "invalid bits %d\n", bits);
        return 0;
    }
}

bellard's avatar
bellard committed
194 195 196 197 198 199 200 201 202 203 204 205 206
void *audio_calloc (const char *funcname, int nmemb, size_t size)
{
    int cond;
    size_t len;

    len = nmemb * size;
    cond = !nmemb || !size;
    cond |= nmemb < 0;
    cond |= len < size;

    if (audio_bug ("audio_calloc", cond)) {
        AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
                 funcname);
bellard's avatar
bellard committed
207
        AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len);
bellard's avatar
bellard committed
208 209 210 211 212 213
        return NULL;
    }

    return qemu_mallocz (len);
}

214
static char *audio_alloc_prefix (const char *s)
bellard's avatar
bellard committed
215
{
216 217 218
    const char qemu_prefix[] = "QEMU_";
    size_t len;
    char *r;
bellard's avatar
bellard committed
219

220 221 222
    if (!s) {
        return NULL;
    }
bellard's avatar
bellard committed
223

224 225
    len = strlen (s);
    r = qemu_malloc (len + sizeof (qemu_prefix));
bellard's avatar
bellard committed
226

227 228 229
    if (r) {
        size_t i;
        char *u = r + sizeof (qemu_prefix) - 1;
bellard's avatar
bellard committed
230

231 232 233 234 235 236
        strcpy (r, qemu_prefix);
        strcat (r, s);

        for (i = 0; i < len; ++i) {
            u[i] = toupper (u[i]);
        }
bellard's avatar
bellard committed
237
    }
238
    return r;
bellard's avatar
bellard committed
239 240
}

241
static const char *audio_audfmt_to_string (audfmt_e fmt)
bellard's avatar
bellard committed
242
{
243 244 245
    switch (fmt) {
    case AUD_FMT_U8:
        return "U8";
bellard's avatar
bellard committed
246

247 248
    case AUD_FMT_U16:
        return "U16";
bellard's avatar
bellard committed
249 250

    case AUD_FMT_S8:
251
        return "S8";
bellard's avatar
bellard committed
252 253

    case AUD_FMT_S16:
254
        return "S16";
255 256 257 258 259 260

    case AUD_FMT_U32:
        return "U32";

    case AUD_FMT_S32:
        return "S32";
bellard's avatar
bellard committed
261 262
    }

263 264
    dolog ("Bogus audfmt %d returning S16\n", fmt);
    return "S16";
bellard's avatar
bellard committed
265 266
}

267 268
static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval,
                                        int *defaultp)
bellard's avatar
bellard committed
269
{
270 271 272 273 274 275 276 277
    if (!strcasecmp (s, "u8")) {
        *defaultp = 0;
        return AUD_FMT_U8;
    }
    else if (!strcasecmp (s, "u16")) {
        *defaultp = 0;
        return AUD_FMT_U16;
    }
278 279 280 281
    else if (!strcasecmp (s, "u32")) {
        *defaultp = 0;
        return AUD_FMT_U32;
    }
282 283 284 285 286 287 288 289
    else if (!strcasecmp (s, "s8")) {
        *defaultp = 0;
        return AUD_FMT_S8;
    }
    else if (!strcasecmp (s, "s16")) {
        *defaultp = 0;
        return AUD_FMT_S16;
    }
290 291 292 293
    else if (!strcasecmp (s, "s32")) {
        *defaultp = 0;
        return AUD_FMT_S32;
    }
294 295 296 297 298 299
    else {
        dolog ("Bogus audio format `%s' using %s\n",
               s, audio_audfmt_to_string (defval));
        *defaultp = 1;
        return defval;
    }
bellard's avatar
bellard committed
300 301
}

302 303 304
static audfmt_e audio_get_conf_fmt (const char *envname,
                                    audfmt_e defval,
                                    int *defaultp)
bellard's avatar
bellard committed
305
{
306 307 308 309
    const char *var = getenv (envname);
    if (!var) {
        *defaultp = 1;
        return defval;
bellard's avatar
bellard committed
310
    }
311
    return audio_string_to_audfmt (var, defval, defaultp);
bellard's avatar
bellard committed
312 313
}

314
static int audio_get_conf_int (const char *key, int defval, int *defaultp)
bellard's avatar
bellard committed
315
{
316 317
    int val;
    char *strval;
bellard's avatar
bellard committed
318

319 320 321 322 323 324 325 326 327 328
    strval = getenv (key);
    if (strval) {
        *defaultp = 0;
        val = atoi (strval);
        return val;
    }
    else {
        *defaultp = 1;
        return defval;
    }
bellard's avatar
bellard committed
329 330
}

331 332 333
static const char *audio_get_conf_str (const char *key,
                                       const char *defval,
                                       int *defaultp)
bellard's avatar
bellard committed
334
{
335 336 337 338 339 340 341 342
    const char *val = getenv (key);
    if (!val) {
        *defaultp = 1;
        return defval;
    }
    else {
        *defaultp = 0;
        return val;
bellard's avatar
bellard committed
343 344 345
    }
}

bellard's avatar
bellard committed
346
void AUD_vlog (const char *cap, const char *fmt, va_list ap)
bellard's avatar
bellard committed
347
{
bellard's avatar
bellard committed
348 349 350 351 352 353 354 355 356 357 358 359 360
    if (conf.log_to_monitor) {
        if (cap) {
            term_printf ("%s: ", cap);
        }

        term_vprintf (fmt, ap);
    }
    else {
        if (cap) {
            fprintf (stderr, "%s: ", cap);
        }

        vfprintf (stderr, fmt, ap);
bellard's avatar
bellard committed
361 362 363
    }
}

bellard's avatar
bellard committed
364
void AUD_log (const char *cap, const char *fmt, ...)
bellard's avatar
bellard committed
365
{
bellard's avatar
bellard committed
366 367 368 369 370
    va_list ap;

    va_start (ap, fmt);
    AUD_vlog (cap, fmt, ap);
    va_end (ap);
bellard's avatar
bellard committed
371 372
}

373 374
static void audio_print_options (const char *prefix,
                                 struct audio_option *opt)
bellard's avatar
bellard committed
375
{
376 377 378 379 380 381 382 383 384
    char *uprefix;

    if (!prefix) {
        dolog ("No prefix specified\n");
        return;
    }

    if (!opt) {
        dolog ("No options\n");
bellard's avatar
bellard committed
385
        return;
386
    }
bellard's avatar
bellard committed
387

388
    uprefix = audio_alloc_prefix (prefix);
bellard's avatar
bellard committed
389

390 391 392
    for (; opt->name; opt++) {
        const char *state = "default";
        printf ("  %s_%s: ", uprefix, opt->name);
bellard's avatar
bellard committed
393

ths's avatar
ths committed
394
        if (opt->overriddenp && *opt->overriddenp) {
395 396
            state = "current";
        }
bellard's avatar
bellard committed
397

398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429
        switch (opt->tag) {
        case AUD_OPT_BOOL:
            {
                int *intp = opt->valp;
                printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
            }
            break;

        case AUD_OPT_INT:
            {
                int *intp = opt->valp;
                printf ("integer, %s = %d\n", state, *intp);
            }
            break;

        case AUD_OPT_FMT:
            {
                audfmt_e *fmtp = opt->valp;
                printf (
                    "format, %s = %s, (one of: U8 S8 U16 S16)\n",
                    state,
                    audio_audfmt_to_string (*fmtp)
                    );
            }
            break;

        case AUD_OPT_STR:
            {
                const char **strp = opt->valp;
                printf ("string, %s = %s\n",
                        state,
                        *strp ? *strp : "(not set)");
bellard's avatar
bellard committed
430
            }
431 432 433 434 435 436 437
            break;

        default:
            printf ("???\n");
            dolog ("Bad value tag for option %s_%s %d\n",
                   uprefix, opt->name, opt->tag);
            break;
bellard's avatar
bellard committed
438
        }
439
        printf ("    %s\n", opt->descr);
bellard's avatar
bellard committed
440
    }
441 442

    qemu_free (uprefix);
bellard's avatar
bellard committed
443 444
}

445 446
static void audio_process_options (const char *prefix,
                                   struct audio_option *opt)
bellard's avatar
bellard committed
447
{
448 449 450
    char *optname;
    const char qemu_prefix[] = "QEMU_";
    size_t preflen;
bellard's avatar
bellard committed
451

452 453 454 455
    if (audio_bug (AUDIO_FUNC, !prefix)) {
        dolog ("prefix = NULL\n");
        return;
    }
bellard's avatar
bellard committed
456

457 458 459
    if (audio_bug (AUDIO_FUNC, !opt)) {
        dolog ("opt = NULL\n");
        return;
bellard's avatar
bellard committed
460 461
    }

462
    preflen = strlen (prefix);
bellard's avatar
bellard committed
463

464 465 466 467 468 469 470 471 472 473 474
    for (; opt->name; opt++) {
        size_t len, i;
        int def;

        if (!opt->valp) {
            dolog ("Option value pointer for `%s' is not set\n",
                   opt->name);
            continue;
        }

        len = strlen (opt->name);
bellard's avatar
bellard committed
475 476 477
        /* len of opt->name + len of prefix + size of qemu_prefix
         * (includes trailing zero) + zero + underscore (on behalf of
         * sizeof) */
478 479
        optname = qemu_malloc (len + preflen + sizeof (qemu_prefix) + 1);
        if (!optname) {
bellard's avatar
bellard committed
480
            dolog ("Could not allocate memory for option name `%s'\n",
481 482 483 484 485
                   opt->name);
            continue;
        }

        strcpy (optname, qemu_prefix);
bellard's avatar
bellard committed
486 487

        /* copy while upper-casing, including trailing zero */
488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520
        for (i = 0; i <= preflen; ++i) {
            optname[i + sizeof (qemu_prefix) - 1] = toupper (prefix[i]);
        }
        strcat (optname, "_");
        strcat (optname, opt->name);

        def = 1;
        switch (opt->tag) {
        case AUD_OPT_BOOL:
        case AUD_OPT_INT:
            {
                int *intp = opt->valp;
                *intp = audio_get_conf_int (optname, *intp, &def);
            }
            break;

        case AUD_OPT_FMT:
            {
                audfmt_e *fmtp = opt->valp;
                *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
            }
            break;

        case AUD_OPT_STR:
            {
                const char **strp = opt->valp;
                *strp = audio_get_conf_str (optname, *strp, &def);
            }
            break;

        default:
            dolog ("Bad value tag for option `%s' - %d\n",
                   optname, opt->tag);
bellard's avatar
bellard committed
521 522 523
            break;
        }

ths's avatar
ths committed
524 525
        if (!opt->overriddenp) {
            opt->overriddenp = &opt->overridden;
526
        }
ths's avatar
ths committed
527
        *opt->overriddenp = !def;
528 529
        qemu_free (optname);
    }
bellard's avatar
bellard committed
530 531
}

bellard's avatar
bellard committed
532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552
static void audio_print_settings (audsettings_t *as)
{
    dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);

    switch (as->fmt) {
    case AUD_FMT_S8:
        AUD_log (NULL, "S8");
        break;
    case AUD_FMT_U8:
        AUD_log (NULL, "U8");
        break;
    case AUD_FMT_S16:
        AUD_log (NULL, "S16");
        break;
    case AUD_FMT_U16:
        AUD_log (NULL, "U16");
        break;
    default:
        AUD_log (NULL, "invalid(%d)", as->fmt);
        break;
    }
bellard's avatar
bellard committed
553 554

    AUD_log (NULL, " endianness=");
555 556 557 558 559 560 561 562 563 564 565
    switch (as->endianness) {
    case 0:
        AUD_log (NULL, "little");
        break;
    case 1:
        AUD_log (NULL, "big");
        break;
    default:
        AUD_log (NULL, "invalid");
        break;
    }
bellard's avatar
bellard committed
566 567 568
    AUD_log (NULL, "\n");
}

bellard's avatar
bellard committed
569
static int audio_validate_settings (audsettings_t *as)
bellard's avatar
bellard committed
570 571 572 573
{
    int invalid;

    invalid = as->nchannels != 1 && as->nchannels != 2;
574
    invalid |= as->endianness != 0 && as->endianness != 1;
bellard's avatar
bellard committed
575 576 577 578 579 580

    switch (as->fmt) {
    case AUD_FMT_S8:
    case AUD_FMT_U8:
    case AUD_FMT_S16:
    case AUD_FMT_U16:
581 582
    case AUD_FMT_S32:
    case AUD_FMT_U32:
bellard's avatar
bellard committed
583 584 585 586 587 588 589
        break;
    default:
        invalid = 1;
        break;
    }

    invalid |= as->freq <= 0;
590
    return invalid ? -1 : 0;
bellard's avatar
bellard committed
591 592 593
}

static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as)
bellard's avatar
bellard committed
594
{
595
    int bits = 8, sign = 0;
bellard's avatar
bellard committed
596

bellard's avatar
bellard committed
597
    switch (as->fmt) {
598 599 600 601 602 603 604 605 606 607
    case AUD_FMT_S8:
        sign = 1;
    case AUD_FMT_U8:
        break;

    case AUD_FMT_S16:
        sign = 1;
    case AUD_FMT_U16:
        bits = 16;
        break;
608 609 610 611 612 613

    case AUD_FMT_S32:
        sign = 1;
    case AUD_FMT_U32:
        bits = 32;
        break;
bellard's avatar
bellard committed
614
    }
bellard's avatar
bellard committed
615 616
    return info->freq == as->freq
        && info->nchannels == as->nchannels
617
        && info->sign == sign
618 619
        && info->bits == bits
        && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
620
}
bellard's avatar
bellard committed
621

622
void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as)
623
{
624
    int bits = 8, sign = 0, shift = 0;
625

bellard's avatar
bellard committed
626
    switch (as->fmt) {
bellard's avatar
bellard committed
627 628 629 630 631 632 633 634 635
    case AUD_FMT_S8:
        sign = 1;
    case AUD_FMT_U8:
        break;

    case AUD_FMT_S16:
        sign = 1;
    case AUD_FMT_U16:
        bits = 16;
636 637 638 639 640 641 642 643
        shift = 1;
        break;

    case AUD_FMT_S32:
        sign = 1;
    case AUD_FMT_U32:
        bits = 32;
        shift = 2;
bellard's avatar
bellard committed
644 645 646
        break;
    }

bellard's avatar
bellard committed
647
    info->freq = as->freq;
648 649
    info->bits = bits;
    info->sign = sign;
bellard's avatar
bellard committed
650
    info->nchannels = as->nchannels;
651
    info->shift = (as->nchannels == 2) + shift;
652 653
    info->align = (1 << info->shift) - 1;
    info->bytes_per_second = info->freq << info->shift;
654
    info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
bellard's avatar
bellard committed
655 656
}

657
void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
bellard's avatar
bellard committed
658
{
659 660 661 662 663
    if (!len) {
        return;
    }

    if (info->sign) {
664
        memset (buf, 0x00, len << info->shift);
bellard's avatar
bellard committed
665 666
    }
    else {
667 668
        switch (info->bits) {
        case 8:
669
            memset (buf, 0x80, len << info->shift);
670
            break;
671

672 673 674 675 676 677 678 679 680 681 682 683 684 685
        case 16:
            {
                int i;
                uint16_t *p = buf;
                int shift = info->nchannels - 1;
                short s = INT16_MAX;

                if (info->swap_endianness) {
                    s = bswap16 (s);
                }

                for (i = 0; i < len << shift; i++) {
                    p[i] = s;
                }
686
            }
687 688 689 690 691 692 693 694 695 696 697 698
            break;

        case 32:
            {
                int i;
                uint32_t *p = buf;
                int shift = info->nchannels - 1;
                int32_t s = INT32_MAX;

                if (info->swap_endianness) {
                    s = bswap32 (s);
                }
699

700 701 702
                for (i = 0; i < len << shift; i++) {
                    p[i] = s;
                }
703
            }
704 705 706 707 708 709
            break;

        default:
            AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
                     info->bits);
            break;
710
        }
bellard's avatar
bellard committed
711 712 713
    }
}

714 715 716 717 718 719 720 721 722 723 724 725 726 727
/*
 * Capture
 */
static void noop_conv (st_sample_t *dst, const void *src,
                       int samples, volume_t *vol)
{
    (void) src;
    (void) dst;
    (void) samples;
    (void) vol;
}

static CaptureVoiceOut *audio_pcm_capture_find_specific (
    AudioState *s,
728
    audsettings_t *as
729 730 731 732 733
    )
{
    CaptureVoiceOut *cap;

    for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
734
        if (audio_pcm_info_eq (&cap->hw.info, as)) {
735 736 737 738 739 740
            return cap;
        }
    }
    return NULL;
}

bellard's avatar
bellard committed
741
static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
742
{
bellard's avatar
bellard committed
743 744 745 746 747 748 749 750 751
    struct capture_callback *cb;

#ifdef DEBUG_CAPTURE
    dolog ("notification %d sent\n", cmd);
#endif
    for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
        cb->ops.notify (cb->opaque, cmd);
    }
}
752

bellard's avatar
bellard committed
753 754 755 756
static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
{
    if (cap->hw.enabled != enabled) {
        audcnotification_e cmd;
757
        cap->hw.enabled = enabled;
bellard's avatar
bellard committed
758 759
        cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
        audio_notify_capture (cap, cmd);
760 761 762 763 764 765 766 767 768
    }
}

static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
{
    HWVoiceOut *hw = &cap->hw;
    SWVoiceOut *sw;
    int enabled = 0;

bellard's avatar
bellard committed
769
    for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
770 771 772 773 774
        if (sw->active) {
            enabled = 1;
            break;
        }
    }
bellard's avatar
bellard committed
775
    audio_capture_maybe_changed (cap, enabled);
776 777 778 779
}

static void audio_detach_capture (HWVoiceOut *hw)
{
bellard's avatar
bellard committed
780 781 782 783 784 785 786
    SWVoiceCap *sc = hw->cap_head.lh_first;

    while (sc) {
        SWVoiceCap *sc1 = sc->entries.le_next;
        SWVoiceOut *sw = &sc->sw;
        CaptureVoiceOut *cap = sc->cap;
        int was_active = sw->active;
787 788 789 790 791 792 793

        if (sw->rate) {
            st_rate_stop (sw->rate);
            sw->rate = NULL;
        }

        LIST_REMOVE (sw, entries);
bellard's avatar
bellard committed
794 795 796 797 798 799 800 801 802
        LIST_REMOVE (sc, entries);
        qemu_free (sc);
        if (was_active) {
            /* We have removed soft voice from the capture:
               this might have changed the overall status of the capture
               since this might have been the only active voice */
            audio_recalc_and_notify_capture (cap);
        }
        sc = sc1;
803 804 805 806 807 808 809 810 811
    }
}

static int audio_attach_capture (AudioState *s, HWVoiceOut *hw)
{
    CaptureVoiceOut *cap;

    audio_detach_capture (hw);
    for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
bellard's avatar
bellard committed
812
        SWVoiceCap *sc;
813
        SWVoiceOut *sw;
bellard's avatar
bellard committed
814
        HWVoiceOut *hw_cap = &cap->hw;
815

bellard's avatar
bellard committed
816 817
        sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
        if (!sc) {
818
            dolog ("Could not allocate soft capture voice (%zu bytes)\n",
bellard's avatar
bellard committed
819
                   sizeof (*sc));
820 821 822
            return -1;
        }

bellard's avatar
bellard committed
823 824
        sc->cap = cap;
        sw = &sc->sw;
825
        sw->hw = hw_cap;
bellard's avatar
bellard committed
826
        sw->info = hw->info;
827 828 829 830 831 832 833 834 835 836 837
        sw->empty = 1;
        sw->active = hw->enabled;
        sw->conv = noop_conv;
        sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
        sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
        if (!sw->rate) {
            dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
            qemu_free (sw);
            return -1;
        }
        LIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
bellard's avatar
bellard committed
838 839 840 841 842 843
        LIST_INSERT_HEAD (&hw->cap_head, sc, entries);
#ifdef DEBUG_CAPTURE
        asprintf (&sw->name, "for %p %d,%d,%d",
                  hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
        dolog ("Added %s active = %d\n", sw->name, sw->active);
#endif
844
        if (sw->active) {
bellard's avatar
bellard committed
845
            audio_capture_maybe_changed (cap, 1);
846 847 848 849 850
        }
    }
    return 0;
}

851 852 853
/*
 * Hard voice (capture)
 */
bellard's avatar
bellard committed
854
static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
bellard's avatar
bellard committed
855
{
856 857 858 859 860 861 862
    SWVoiceIn *sw;
    int m = hw->total_samples_captured;

    for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
        if (sw->active) {
            m = audio_MIN (m, sw->total_hw_samples_acquired);
        }
bellard's avatar
bellard committed
863
    }
864
    return m;
bellard's avatar
bellard committed
865 866
}

867
int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
bellard's avatar
bellard committed
868
{
869 870 871 872
    int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
    if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
        dolog ("live=%d hw->samples=%d\n", live, hw->samples);
        return 0;
bellard's avatar
bellard committed
873
    }
874
    return live;
bellard's avatar
bellard committed
875 876
}

877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893
/*
 * Soft voice (capture)
 */
static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
{
    HWVoiceIn *hw = sw->hw;
    int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
    int rpos;

    if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
        dolog ("live=%d hw->samples=%d\n", live, hw->samples);
        return 0;
    }

    rpos = hw->wpos - live;
    if (rpos >= 0) {
        return rpos;
bellard's avatar
bellard committed
894 895
    }
    else {
896
        return hw->samples + rpos;
bellard's avatar
bellard committed
897 898 899
    }
}

900
int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
bellard's avatar
bellard committed
901
{
902 903
    HWVoiceIn *hw = sw->hw;
    int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
bellard's avatar
bellard committed
904
    st_sample_t *src, *dst = sw->buf;
905 906 907 908 909 910 911 912 913 914 915 916 917

    rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;

    live = hw->total_samples_captured - sw->total_hw_samples_acquired;
    if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
        dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
        return 0;
    }

    samples = size >> sw->info.shift;
    if (!live) {
        return 0;
    }
bellard's avatar
bellard committed
918

919 920
    swlim = (live * sw->ratio) >> 32;
    swlim = audio_MIN (swlim, samples);
bellard's avatar
bellard committed
921

922 923 924 925 926 927 928
    while (swlim) {
        src = hw->conv_buf + rpos;
        isamp = hw->wpos - rpos;
        /* XXX: <= ? */
        if (isamp <= 0) {
            isamp = hw->samples - rpos;
        }
bellard's avatar
bellard committed
929

930 931 932 933
        if (!isamp) {
            break;
        }
        osamp = swlim;
bellard's avatar
bellard committed
934

935 936
        if (audio_bug (AUDIO_FUNC, osamp < 0)) {
            dolog ("osamp=%d\n", osamp);
bellard's avatar
bellard committed
937
            return 0;
938
        }
bellard's avatar
bellard committed
939

940 941 942 943 944 945 946
        st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
        swlim -= osamp;
        rpos = (rpos + isamp) % hw->samples;
        dst += osamp;
        ret += osamp;
        total += isamp;
    }
bellard's avatar
bellard committed
947

bellard's avatar
bellard committed
948
    sw->clip (buf, sw->buf, ret);
949 950
    sw->total_hw_samples_acquired += total;
    return ret << sw->info.shift;
bellard's avatar
bellard committed
951 952
}

953 954 955
/*
 * Hard voice (playback)
 */
bellard's avatar
bellard committed
956
static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
957
{
bellard's avatar
bellard committed
958 959 960
    SWVoiceOut *sw;
    int m = INT_MAX;
    int nb_live = 0;
bellard's avatar
bellard committed
961

bellard's avatar
bellard committed
962 963 964 965 966
    for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
        if (sw->active || !sw->empty) {
            m = audio_MIN (m, sw->total_hw_samples_mixed);
            nb_live += 1;
        }
bellard's avatar
bellard committed
967
    }
bellard's avatar
bellard committed
968 969 970

    *nb_livep = nb_live;
    return m;
971
}
bellard's avatar
bellard committed
972

973 974 975
int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live)
{
    int smin;
bellard's avatar
bellard committed
976

977 978 979 980
    smin = audio_pcm_hw_find_min_out (hw, nb_live);

    if (!*nb_live) {
        return 0;
bellard's avatar
bellard committed
981 982
    }
    else {
983 984 985 986 987
        int live = smin;

        if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
            dolog ("live=%d hw->samples=%d\n", live, hw->samples);
            return 0;
bellard's avatar
bellard committed
988
        }
989
        return live;
bellard's avatar
bellard committed
990
    }
991 992 993 994 995 996
}

int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
{
    int nb_live;
    int live;
bellard's avatar
bellard committed
997

998 999 1000 1001
    live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
    if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
        dolog ("live=%d hw->samples=%d\n", live, hw->samples);
        return 0;
bellard's avatar
bellard committed
1002
    }
1003
    return live;
bellard's avatar
bellard committed
1004 1005
}

1006 1007 1008 1009
/*
 * Soft voice (playback)
 */
int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
bellard's avatar
bellard committed
1010
{
1011 1012
    int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
    int ret = 0, pos = 0, total = 0;
bellard's avatar
bellard committed
1013

1014 1015 1016
    if (!sw) {
        return size;
    }
bellard's avatar
bellard committed
1017

1018
    hwsamples = sw->hw->samples;
bellard's avatar
bellard committed
1019

1020 1021 1022 1023 1024
    live = sw->total_hw_samples_mixed;
    if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
        dolog ("live=%d hw->samples=%d\n", live, hwsamples);
        return 0;
    }
bellard's avatar
bellard committed
1025

1026
    if (live == hwsamples) {
bellard's avatar
bellard committed
1027 1028 1029
#ifdef DEBUG_OUT
        dolog ("%s is full %d\n", sw->name, live);
#endif
1030 1031
        return 0;
    }
bellard's avatar
bellard committed
1032

1033 1034
    wpos = (sw->hw->rpos + live) % hwsamples;
    samples = size >> sw->info.shift;
bellard's avatar
bellard committed
1035

1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071
    dead = hwsamples - live;
    swlim = ((int64_t) dead << 32) / sw->ratio;
    swlim = audio_MIN (swlim, samples);
    if (swlim) {
        sw->conv (sw->buf, buf, swlim, &sw->vol);
    }

    while (swlim) {
        dead = hwsamples - live;
        left = hwsamples - wpos;
        blck = audio_MIN (dead, left);
        if (!blck) {
            break;
        }
        isamp = swlim;
        osamp = blck;
        st_rate_flow_mix (
            sw->rate,
            sw->buf + pos,
            sw->hw->mix_buf + wpos,
            &isamp,
            &osamp
            );
        ret += isamp;
        swlim -= isamp;
        pos += isamp;
        live += osamp;
        wpos = (wpos + osamp) % hwsamples;
        total += osamp;
    }

    sw->total_hw_samples_mixed += total;
    sw->empty = sw->total_hw_samples_mixed == 0;

#ifdef DEBUG_OUT
    dolog (
bellard's avatar
bellard committed
1072 1073
        "%s: write size %d ret %d total sw %d\n",
        SW_NAME (sw),
1074 1075
        size >> sw->info.shift,
        ret,
bellard's avatar
bellard committed
1076
        sw->total_hw_samples_mixed
1077 1078 1079 1080
        );
#endif

    return ret << sw->info.shift;
bellard's avatar
bellard committed
1081 1082
}

1083 1084
#ifdef DEBUG_AUDIO
static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
bellard's avatar
bellard committed
1085
{
1086 1087
    dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
           cap, info->bits, info->sign, info->freq, info->nchannels);
bellard's avatar
bellard committed
1088
}
1089
#endif
bellard's avatar
bellard committed
1090

1091 1092 1093 1094 1095 1096
#define DAC
#include "audio_template.h"
#undef DAC
#include "audio_template.h"

int AUD_write (SWVoiceOut *sw, void *buf, int size)
bellard's avatar
bellard committed
1097
{
1098
    int bytes;
bellard's avatar
bellard committed
1099

1100 1101 1102 1103
    if (!sw) {
        /* XXX: Consider options */
        return size;
    }
bellard's avatar
bellard committed
1104

1105
    if (!sw->hw->enabled) {
bellard's avatar
bellard committed
1106
        dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
bellard's avatar
bellard committed
1107 1108 1109
        return 0;
    }

1110 1111 1112 1113 1114 1115 1116
    bytes = sw->hw->pcm_ops->write (sw, buf, size);
    return bytes;
}

int AUD_read (SWVoiceIn *sw, void *buf, int size)
{
    int bytes;
bellard's avatar
bellard committed
1117

1118 1119 1120
    if (!sw) {
        /* XXX: Consider options */
        return size;
bellard's avatar
bellard committed
1121
    }
1122 1123

    if (!sw->hw->enabled) {
bellard's avatar
bellard committed
1124
        dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
1125
        return 0;
bellard's avatar
bellard committed
1126
    }
1127 1128 1129

    bytes = sw->hw->pcm_ops->read (sw, buf, size);
    return bytes;
bellard's avatar
bellard committed
1130 1131
}

1132
int AUD_get_buffer_size_out (SWVoiceOut *sw)
bellard's avatar
bellard committed
1133
{
bellard's avatar
bellard committed
1134
    return sw->hw->samples << sw->hw->info.shift;
1135 1136 1137 1138 1139
}

void AUD_set_active_out (SWVoiceOut *sw, int on)
{
    HWVoiceOut *hw;
bellard's avatar
bellard committed
1140

1141
    if (!sw) {
bellard's avatar
bellard committed
1142
        return;
1143
    }
bellard's avatar
bellard committed
1144 1145

    hw = sw->hw;
1146 1147
    if (sw->active != on) {
        SWVoiceOut *temp_sw;
bellard's avatar
bellard committed
1148
        SWVoiceCap *sc;
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167

        if (on) {
            hw->pending_disable = 0;
            if (!hw->enabled) {
                hw->enabled = 1;
                hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
            }
        }
        else {
            if (hw->enabled) {
                int nb_active = 0;

                for (temp_sw = hw->sw_head.lh_first; temp_sw;
                     temp_sw = temp_sw->entries.le_next) {
                    nb_active += temp_sw->active != 0;
                }

                hw->pending_disable = nb_active == 1;
            }
bellard's avatar
bellard committed
1168
        }
bellard's avatar
bellard committed
1169 1170 1171

        for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
            sc->sw.active = hw->enabled;
1172
            if (hw->enabled) {
bellard's avatar
bellard committed
1173
                audio_capture_maybe_changed (sc->cap, 1);
1174 1175
            }
        }
1176 1177 1178 1179 1180 1181 1182 1183 1184 1185
        sw->active = on;
    }
}

void AUD_set_active_in (SWVoiceIn *sw, int on)
{
    HWVoiceIn *hw;

    if (!sw) {
        return;
bellard's avatar
bellard committed
1186 1187
    }

1188
    hw = sw->hw;
bellard's avatar
bellard committed
1189
    if (sw->active != on) {
1190 1191
        SWVoiceIn *temp_sw;

bellard's avatar
bellard committed
1192 1193 1194
        if (on) {
            if (!hw->enabled) {
                hw->enabled = 1;
1195
                hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
bellard's avatar
bellard committed
1196
            }
1197
            sw->total_hw_samples_acquired = hw->total_samples_captured;
bellard's avatar
bellard committed
1198 1199
        }
        else {
1200
            if (hw->enabled) {
bellard's avatar
bellard committed
1201
                int nb_active = 0;
1202 1203 1204 1205

                for (temp_sw = hw->sw_head.lh_first; temp_sw;
                     temp_sw = temp_sw->entries.le_next) {
                    nb_active += temp_sw->active != 0;
bellard's avatar
bellard committed
1206 1207 1208
                }

                if (nb_active == 1) {
1209 1210
                    hw->enabled = 0;
                    hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
bellard's avatar
bellard committed
1211 1212 1213 1214 1215 1216 1217
                }
            }
        }
        sw->active = on;
    }
}

1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232
static int audio_get_avail (SWVoiceIn *sw)
{
    int live;

    if (!sw) {
        return 0;
    }

    live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
    if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
        dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
        return 0;
    }

    ldebug (
bellard's avatar
bellard committed
1233
        "%s: get_avail live %d ret %" PRId64 "\n",
bellard's avatar
bellard committed
1234
        SW_NAME (sw),
1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252
        live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
        );

    return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
}

static int audio_get_free (SWVoiceOut *sw)
{
    int live, dead;

    if (!sw) {
        return 0;
    }

    live = sw->total_hw_samples_mixed;

    if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
        dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
bellard's avatar
bellard committed
1253
        return 0;
1254 1255 1256 1257 1258
    }

    dead = sw->hw->samples - live;

#ifdef DEBUG_OUT
bellard's avatar
bellard committed
1259
    dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
bellard's avatar
bellard committed
1260
           SW_NAME (sw),
1261
           live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
bellard's avatar
bellard committed
1262
#endif
1263 1264 1265 1266

    return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
}

1267 1268 1269 1270 1271
static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
{
    int n;

    if (hw->enabled) {
bellard's avatar
bellard committed
1272
        SWVoiceCap *sc;
1273

bellard's avatar
bellard committed
1274 1275
        for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
            SWVoiceOut *sw = &sc->sw;
1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287
            int rpos2 = rpos;

            n = samples;
            while (n) {
                int till_end_of_hw = hw->samples - rpos2;
                int to_write = audio_MIN (till_end_of_hw, n);
                int bytes = to_write << hw->info.shift;
                int written;

                sw->buf = hw->mix_buf + rpos2;
                written = audio_pcm_sw_write (sw, NULL, bytes);
                if (written - bytes) {
bellard's avatar
bellard committed
1288 1289 1290
                    dolog ("Could not mix %d bytes into a capture "
                           "buffer, mixed %d\n",
                           bytes, written);
1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303
                    break;
                }
                n -= to_write;
                rpos2 = (rpos2 + to_write) % hw->samples;
            }
        }
    }

    n = audio_MIN (samples, hw->samples - rpos);
    mixeng_clear (hw->mix_buf + rpos, n);
    mixeng_clear (hw->mix_buf, samples - n);
}

bellard's avatar
bellard committed
1304
static void audio_run_out (AudioState *s)
1305 1306 1307 1308
{
    HWVoiceOut *hw = NULL;
    SWVoiceOut *sw;

bellard's avatar
bellard committed
1309
    while ((hw = audio_pcm_hw_find_any_enabled_out (s, hw))) {
1310
        int played;
1311
        int live, free, nb_live, cleanup_required, prev_rpos;
1312 1313 1314 1315 1316

        live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
        if (!nb_live) {
            live = 0;
        }
bellard's avatar
bellard committed
1317

1318 1319
        if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
            dolog ("live=%d hw->samples=%d\n", live, hw->samples);
bellard's avatar
bellard committed
1320
            continue;
1321 1322 1323
        }

        if (hw->pending_disable && !nb_live) {
bellard's avatar
bellard committed
1324
            SWVoiceCap *sc;
1325 1326
#ifdef DEBUG_OUT
            dolog ("Disabling voice\n");
bellard's avatar
bellard committed
1327
#endif
1328 1329 1330
            hw->enabled = 0;
            hw->pending_disable = 0;
            hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
bellard's avatar
bellard committed
1331 1332 1333
            for (sc = hw->cap_head