audio/fmodaudio.c

   1 /*
   2  * QEMU FMOD audio driver
   3  *
   4  * Copyright (c) 2004-2005 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 <fmod.h>
  25 #include <fmod_errors.h>
  26 #include "qemu-common.h"
  27 #include "audio.h"
  28
  29 #define AUDIO_CAP "fmod"
  30 #include "audio_int.h"
  31
  32 typedef struct FMODVoiceOut {
  33     HWVoiceOut hw;
  34     unsigned int old_pos;
  35     FSOUND_SAMPLE *fmod_sample;
  36     int channel;
  37 } FMODVoiceOut;
  38
  39 typedef struct FMODVoiceIn {
  40     HWVoiceIn hw;
  41     FSOUND_SAMPLE *fmod_sample;
  42 } FMODVoiceIn;
  43
  44 static struct {
  45     const char *drvname;
  46     int nb_samples;
  47     int freq;
  48     int nb_channels;
  49     int bufsize;
  50     int broken_adc;
  51 } conf = {
  52     .nb_samples  = 2048 * 2,
  53     .freq        = 44100,
  54     .nb_channels = 2,
  55 };
  56
  57 static void GCC_FMT_ATTR (1, 2) fmod_logerr (const char *fmt, ...)
  58 {
  59     va_list ap;
  60
  61     va_start (ap, fmt);
  62     AUD_vlog (AUDIO_CAP, fmt, ap);
  63     va_end (ap);
  64
  65     AUD_log (AUDIO_CAP, "Reason: %s\n",
  66              FMOD_ErrorString (FSOUND_GetError ()));
  67 }
  68
  69 static void GCC_FMT_ATTR (2, 3) fmod_logerr2 (
  70     const char *typ,
  71     const char *fmt,
  72     ...
  73     )
  74 {
  75     va_list ap;
  76
  77     AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
  78
  79     va_start (ap, fmt);
  80     AUD_vlog (AUDIO_CAP, fmt, ap);
  81     va_end (ap);
  82
  83     AUD_log (AUDIO_CAP, "Reason: %s\n",
  84              FMOD_ErrorString (FSOUND_GetError ()));
  85 }
  86
  87 static int fmod_write (SWVoiceOut *sw, void *buf, int len)
  88 {
  89     return audio_pcm_sw_write (sw, buf, len);
  90 }
  91
  92 static void fmod_clear_sample (FMODVoiceOut *fmd)
  93 {
  94     HWVoiceOut *hw = &fmd->hw;
  95     int status;
  96     void *p1 = 0, *p2 = 0;
  97     unsigned int len1 = 0, len2 = 0;
  98
  99     status = FSOUND_Sample_Lock (
 100         fmd->fmod_sample,
 101         0,
 102         hw->samples << hw->info.shift,
 103         &p1,
 104         &p2,
 105         &len1,
 106         &len2
 107         );
 108
 109     if (!status) {
 110         fmod_logerr ("Failed to lock sample\n");
 111         return;
 112     }
 113
 114     if ((len1 & hw->info.align) || (len2 & hw->info.align)) {
 115         dolog ("Lock returned misaligned length %d, %d, alignment %d\n",
 116                len1, len2, hw->info.align + 1);
 117         goto fail;
 118     }
 119
 120     if ((len1 + len2) - (hw->samples << hw->info.shift)) {
 121         dolog ("Lock returned incomplete length %d, %d\n",
 122                len1 + len2, hw->samples << hw->info.shift);
 123         goto fail;
 124     }
 125
 126     audio_pcm_info_clear_buf (&hw->info, p1, hw->samples);
 127
 128  fail:
 129     status = FSOUND_Sample_Unlock (fmd->fmod_sample, p1, p2, len1, len2);
 130     if (!status) {
 131         fmod_logerr ("Failed to unlock sample\n");
 132     }
 133 }
 134
 135 static void fmod_write_sample (HWVoiceOut *hw, uint8_t *dst, int dst_len)
 136 {
 137     int src_len1 = dst_len;
 138     int src_len2 = 0;
 139     int pos = hw->rpos + dst_len;
 140     struct st_sample *src1 = hw->mix_buf + hw->rpos;
 141     struct st_sample *src2 = NULL;
 142
 143     if (pos > hw->samples) {
 144         src_len1 = hw->samples - hw->rpos;
 145         src2 = hw->mix_buf;
 146         src_len2 = dst_len - src_len1;
 147         pos = src_len2;
 148     }
 149
 150     if (src_len1) {
 151         hw->clip (dst, src1, src_len1);
 152     }
 153
 154     if (src_len2) {
 155         dst = advance (dst, src_len1 << hw->info.shift);
 156         hw->clip (dst, src2, src_len2);
 157     }
 158
 159     hw->rpos = pos % hw->samples;
 160 }
 161
 162 static int fmod_unlock_sample (FSOUND_SAMPLE *sample, void *p1, void *p2,
 163                                unsigned int blen1, unsigned int blen2)
 164 {
 165     int status = FSOUND_Sample_Unlock (sample, p1, p2, blen1, blen2);
 166     if (!status) {
 167         fmod_logerr ("Failed to unlock sample\n");
 168         return -1;
 169     }
 170     return 0;
 171 }
 172
 173 static int fmod_lock_sample (
 174     FSOUND_SAMPLE *sample,
 175     struct audio_pcm_info *info,
 176     int pos,
 177     int len,
 178     void **p1,
 179     void **p2,
 180     unsigned int *blen1,
 181     unsigned int *blen2
 182     )
 183 {
 184     int status;
 185
 186     status = FSOUND_Sample_Lock (
 187         sample,
 188         pos << info->shift,
 189         len << info->shift,
 190         p1,
 191         p2,
 192         blen1,
 193         blen2
 194         );
 195
 196     if (!status) {
 197         fmod_logerr ("Failed to lock sample\n");
 198         return -1;
 199     }
 200
 201     if ((*blen1 & info->align) || (*blen2 & info->align)) {
 202         dolog ("Lock returned misaligned length %d, %d, alignment %d\n",
 203                *blen1, *blen2, info->align + 1);
 204
 205         fmod_unlock_sample (sample, *p1, *p2, *blen1, *blen2);
 206
 207         *p1 = NULL - 1;
 208         *p2 = NULL - 1;
 209         *blen1 = ~0U;
 210         *blen2 = ~0U;
 211         return -1;
 212     }
 213
 214     if (!*p1 && *blen1) {
 215         dolog ("warning: !p1 && blen1=%d\n", *blen1);
 216         *blen1 = 0;
 217     }
 218
 219     if (!p2 && *blen2) {
 220         dolog ("warning: !p2 && blen2=%d\n", *blen2);
 221         *blen2 = 0;
 222     }
 223
 224     return 0;
 225 }
 226
 227 static int fmod_run_out (HWVoiceOut *hw, int live)
 228 {
 229     FMODVoiceOut *fmd = (FMODVoiceOut *) hw;
 230     int decr;
 231     void *p1 = 0, *p2 = 0;
 232     unsigned int blen1 = 0, blen2 = 0;
 233     unsigned int len1 = 0, len2 = 0;
 234
 235     if (!hw->pending_disable) {
 236         return 0;
 237     }
 238
 239     decr = live;
 240
 241     if (fmd->channel >= 0) {
 242         int len = decr;
 243         int old_pos = fmd->old_pos;
 244         int ppos = FSOUND_GetCurrentPosition (fmd->channel);
 245
 246         if (ppos == old_pos || !ppos) {
 247             return 0;
 248         }
 249
 250         if ((old_pos < ppos) && ((old_pos + len) > ppos)) {
 251             len = ppos - old_pos;
 252         }
 253         else {
 254             if ((old_pos > ppos) && ((old_pos + len) > (ppos + hw->samples))) {
 255                 len = hw->samples - old_pos + ppos;
 256             }
 257         }
 258         decr = len;
 259
 260         if (audio_bug (AUDIO_FUNC, decr < 0)) {
 261             dolog ("decr=%d live=%d ppos=%d old_pos=%d len=%d\n",
 262                    decr, live, ppos, old_pos, len);
 263             return 0;
 264         }
 265     }
 266
 267
 268     if (!decr) {
 269         return 0;
 270     }
 271
 272     if (fmod_lock_sample (fmd->fmod_sample, &fmd->hw.info,
 273                           fmd->old_pos, decr,
 274                           &p1, &p2,
 275                           &blen1, &blen2)) {
 276         return 0;
 277     }
 278
 279     len1 = blen1 >> hw->info.shift;
 280     len2 = blen2 >> hw->info.shift;
 281     ldebug ("%p %p %d %d %d %d\n", p1, p2, len1, len2, blen1, blen2);
 282     decr = len1 + len2;
 283
 284     if (p1 && len1) {
 285         fmod_write_sample (hw, p1, len1);
 286     }
 287
 288     if (p2 && len2) {
 289         fmod_write_sample (hw, p2, len2);
 290     }
 291
 292     fmod_unlock_sample (fmd->fmod_sample, p1, p2, blen1, blen2);
 293
 294     fmd->old_pos = (fmd->old_pos + decr) % hw->samples;
 295     return decr;
 296 }
 297
 298 static int aud_to_fmodfmt (audfmt_e fmt, int stereo)
 299 {
 300     int mode = FSOUND_LOOP_NORMAL;
 301
 302     switch (fmt) {
 303     case AUD_FMT_S8:
 304         mode |= FSOUND_SIGNED | FSOUND_8BITS;
 305         break;
 306
 307     case AUD_FMT_U8:
 308         mode |= FSOUND_UNSIGNED | FSOUND_8BITS;
 309         break;
 310
 311     case AUD_FMT_S16:
 312         mode |= FSOUND_SIGNED | FSOUND_16BITS;
 313         break;
 314
 315     case AUD_FMT_U16:
 316         mode |= FSOUND_UNSIGNED | FSOUND_16BITS;
 317         break;
 318
 319     default:
 320         dolog ("Internal logic error: Bad audio format %d\n", fmt);
 321 #ifdef DEBUG_FMOD
 322         abort ();
 323 #endif
 324         mode |= FSOUND_8BITS;
 325     }
 326     mode |= stereo ? FSOUND_STEREO : FSOUND_MONO;
 327     return mode;
 328 }
 329
 330 static void fmod_fini_out (HWVoiceOut *hw)
 331 {
 332     FMODVoiceOut *fmd = (FMODVoiceOut *) hw;
 333
 334     if (fmd->fmod_sample) {
 335         FSOUND_Sample_Free (fmd->fmod_sample);
 336         fmd->fmod_sample = 0;
 337
 338         if (fmd->channel >= 0) {
 339             FSOUND_StopSound (fmd->channel);
 340         }
 341     }
 342 }
 343
 344 static int fmod_init_out (HWVoiceOut *hw, struct audsettings *as)
 345 {
 346     int bits16, mode, channel;
 347     FMODVoiceOut *fmd = (FMODVoiceOut *) hw;
 348     struct audsettings obt_as = *as;
 349
 350     mode = aud_to_fmodfmt (as->fmt, as->nchannels == 2 ? 1 : 0);
 351     fmd->fmod_sample = FSOUND_Sample_Alloc (
 352         FSOUND_FREE,            /* index */
 353         conf.nb_samples,        /* length */
 354         mode,                   /* mode */
 355         as->freq,               /* freq */
 356         255,                    /* volume */
 357         128,                    /* pan */
 358         255                     /* priority */
 359         );
 360
 361     if (!fmd->fmod_sample) {
 362         fmod_logerr2 ("DAC", "Failed to allocate FMOD sample\n");
 363         return -1;
 364     }
 365
 366     channel = FSOUND_PlaySoundEx (FSOUND_FREE, fmd->fmod_sample, 0, 1);
 367     if (channel < 0) {
 368         fmod_logerr2 ("DAC", "Failed to start playing sound\n");
 369         FSOUND_Sample_Free (fmd->fmod_sample);
 370         return -1;
 371     }
 372     fmd->channel = channel;
 373
 374     /* FMOD always operates on little endian frames? */
 375     obt_as.endianness = 0;
 376     audio_pcm_init_info (&hw->info, &obt_as);
 377     bits16 = (mode & FSOUND_16BITS) != 0;
 378     hw->samples = conf.nb_samples;
 379     return 0;
 380 }
 381
 382 static int fmod_ctl_out (HWVoiceOut *hw, int cmd, ...)
 383 {
 384     int status;
 385     FMODVoiceOut *fmd = (FMODVoiceOut *) hw;
 386
 387     switch (cmd) {
 388     case VOICE_ENABLE:
 389         fmod_clear_sample (fmd);
 390         status = FSOUND_SetPaused (fmd->channel, 0);
 391         if (!status) {
 392             fmod_logerr ("Failed to resume channel %d\n", fmd->channel);
 393         }
 394         break;
 395
 396     case VOICE_DISABLE:
 397         status = FSOUND_SetPaused (fmd->channel, 1);
 398         if (!status) {
 399             fmod_logerr ("Failed to pause channel %d\n", fmd->channel);
 400         }
 401         break;
 402     }
 403     return 0;
 404 }
 405
 406 static int fmod_init_in (HWVoiceIn *hw, struct audsettings *as)
 407 {
 408     int bits16, mode;
 409     FMODVoiceIn *fmd = (FMODVoiceIn *) hw;
 410     struct audsettings obt_as = *as;
 411
 412     if (conf.broken_adc) {
 413         return -1;
 414     }
 415
 416     mode = aud_to_fmodfmt (as->fmt, as->nchannels == 2 ? 1 : 0);
 417     fmd->fmod_sample = FSOUND_Sample_Alloc (
 418         FSOUND_FREE,            /* index */
 419         conf.nb_samples,        /* length */
 420         mode,                   /* mode */
 421         as->freq,               /* freq */
 422         255,                    /* volume */
 423         128,                    /* pan */
 424         255                     /* priority */
 425         );
 426
 427     if (!fmd->fmod_sample) {
 428         fmod_logerr2 ("ADC", "Failed to allocate FMOD sample\n");
 429         return -1;
 430     }
 431
 432     /* FMOD always operates on little endian frames? */
 433     obt_as.endianness = 0;
 434     audio_pcm_init_info (&hw->info, &obt_as);
 435     bits16 = (mode & FSOUND_16BITS) != 0;
 436     hw->samples = conf.nb_samples;
 437     return 0;
 438 }
 439
 440 static void fmod_fini_in (HWVoiceIn *hw)
 441 {
 442     FMODVoiceIn *fmd = (FMODVoiceIn *) hw;
 443
 444     if (fmd->fmod_sample) {
 445         FSOUND_Record_Stop ();
 446         FSOUND_Sample_Free (fmd->fmod_sample);
 447         fmd->fmod_sample = 0;
 448     }
 449 }
 450
 451 static int fmod_run_in (HWVoiceIn *hw)
 452 {
 453     FMODVoiceIn *fmd = (FMODVoiceIn *) hw;
 454     int hwshift = hw->info.shift;
 455     int live, dead, new_pos, len;
 456     unsigned int blen1 = 0, blen2 = 0;
 457     unsigned int len1, len2;
 458     unsigned int decr;
 459     void *p1, *p2;
 460
 461     live = audio_pcm_hw_get_live_in (hw);
 462     dead = hw->samples - live;
 463     if (!dead) {
 464         return 0;
 465     }
 466
 467     new_pos = FSOUND_Record_GetPosition ();
 468     if (new_pos < 0) {
 469         fmod_logerr ("Could not get recording position\n");
 470         return 0;
 471     }
 472
 473     len = audio_ring_dist (new_pos,  hw->wpos, hw->samples);
 474     if (!len) {
 475         return 0;
 476     }
 477     len = audio_MIN (len, dead);
 478
 479     if (fmod_lock_sample (fmd->fmod_sample, &fmd->hw.info,
 480                           hw->wpos, len,
 481                           &p1, &p2,
 482                           &blen1, &blen2)) {
 483         return 0;
 484     }
 485
 486     len1 = blen1 >> hwshift;
 487     len2 = blen2 >> hwshift;
 488     decr = len1 + len2;
 489
 490     if (p1 && blen1) {
 491         hw->conv (hw->conv_buf + hw->wpos, p1, len1);
 492     }
 493     if (p2 && len2) {
 494         hw->conv (hw->conv_buf, p2, len2);
 495     }
 496
 497     fmod_unlock_sample (fmd->fmod_sample, p1, p2, blen1, blen2);
 498     hw->wpos = (hw->wpos + decr) % hw->samples;
 499     return decr;
 500 }
 501
 502 static struct {
 503     const char *name;
 504     int type;
 505 } drvtab[] = {
 506     { .name = "none",   .type = FSOUND_OUTPUT_NOSOUND },
 507 #ifdef _WIN32
 508     { .name = "winmm",  .type = FSOUND_OUTPUT_WINMM   },
 509     { .name = "dsound", .type = FSOUND_OUTPUT_DSOUND  },
 510     { .name = "a3d",    .type = FSOUND_OUTPUT_A3D     },
 511     { .name = "asio",   .type = FSOUND_OUTPUT_ASIO    },
 512 #endif
 513 #ifdef __linux__
 514     { .name = "oss",    .type = FSOUND_OUTPUT_OSS     },
 515     { .name = "alsa",   .type = FSOUND_OUTPUT_ALSA    },
 516     { .name = "esd",    .type = FSOUND_OUTPUT_ESD     },
 517 #endif
 518 #ifdef __APPLE__
 519     { .name = "mac",    .type = FSOUND_OUTPUT_MAC     },
 520 #endif
 521 #if 0
 522     { .name = "xbox",   .type = FSOUND_OUTPUT_XBOX    },
 523     { .name = "ps2",    .type = FSOUND_OUTPUT_PS2     },
 524     { .name = "gcube",  .type = FSOUND_OUTPUT_GC      },
 525 #endif
 526     { .name = "none-realtime", .type = FSOUND_OUTPUT_NOSOUND_NONREALTIME }
 527 };
 528
 529 static void *fmod_audio_init (void)
 530 {
 531     size_t i;
 532     double ver;
 533     int status;
 534     int output_type = -1;
 535     const char *drv = conf.drvname;
 536
 537     ver = FSOUND_GetVersion ();
 538     if (ver < FMOD_VERSION) {
 539         dolog ("Wrong FMOD version %f, need at least %f\n", ver, FMOD_VERSION);
 540         return NULL;
 541     }
 542
 543 #ifdef __linux__
 544     if (ver < 3.75) {
 545         dolog ("FMOD before 3.75 has bug preventing ADC from working\n"
 546                "ADC will be disabled.\n");
 547         conf.broken_adc = 1;
 548     }
 549 #endif
 550
 551     if (drv) {
 552         int found = 0;
 553         for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
 554             if (!strcmp (drv, drvtab[i].name)) {
 555                 output_type = drvtab[i].type;
 556                 found = 1;
 557                 break;
 558             }
 559         }
 560         if (!found) {
 561             dolog ("Unknown FMOD driver `%s'\n", drv);
 562             dolog ("Valid drivers:\n");
 563             for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
 564                 dolog ("  %s\n", drvtab[i].name);
 565             }
 566         }
 567     }
 568
 569     if (output_type != -1) {
 570         status = FSOUND_SetOutput (output_type);
 571         if (!status) {
 572             fmod_logerr ("FSOUND_SetOutput(%d) failed\n", output_type);
 573             return NULL;
 574         }
 575     }
 576
 577     if (conf.bufsize) {
 578         status = FSOUND_SetBufferSize (conf.bufsize);
 579         if (!status) {
 580             fmod_logerr ("FSOUND_SetBufferSize (%d) failed\n", conf.bufsize);
 581         }
 582     }
 583
 584     status = FSOUND_Init (conf.freq, conf.nb_channels, 0);
 585     if (!status) {
 586         fmod_logerr ("FSOUND_Init failed\n");
 587         return NULL;
 588     }
 589
 590     return &conf;
 591 }
 592
 593 static int fmod_read (SWVoiceIn *sw, void *buf, int size)
 594 {
 595     return audio_pcm_sw_read (sw, buf, size);
 596 }
 597
 598 static int fmod_ctl_in (HWVoiceIn *hw, int cmd, ...)
 599 {
 600     int status;
 601     FMODVoiceIn *fmd = (FMODVoiceIn *) hw;
 602
 603     switch (cmd) {
 604     case VOICE_ENABLE:
 605         status = FSOUND_Record_StartSample (fmd->fmod_sample, 1);
 606         if (!status) {
 607             fmod_logerr ("Failed to start recording\n");
 608         }
 609         break;
 610
 611     case VOICE_DISABLE:
 612         status = FSOUND_Record_Stop ();
 613         if (!status) {
 614             fmod_logerr ("Failed to stop recording\n");
 615         }
 616         break;
 617     }
 618     return 0;
 619 }
 620
 621 static void fmod_audio_fini (void *opaque)
 622 {
 623     (void) opaque;
 624     FSOUND_Close ();
 625 }
 626
 627 static struct audio_option fmod_options[] = {
 628     {
 629         .name  = "DRV",
 630         .tag   = AUD_OPT_STR,
 631         .valp  = &conf.drvname,
 632         .descr = "FMOD driver"
 633     },
 634     {
 635         .name  = "FREQ",
 636         .tag   = AUD_OPT_INT,
 637         .valp  = &conf.freq,
 638         .descr = "Default frequency"
 639     },
 640     {
 641         .name  = "SAMPLES",
 642         .tag   = AUD_OPT_INT,
 643         .valp  = &conf.nb_samples,
 644         .descr = "Buffer size in samples"
 645     },
 646     {
 647         .name  = "CHANNELS",
 648         .tag   = AUD_OPT_INT,
 649         .valp  = &conf.nb_channels,
 650         .descr = "Number of default channels (1 - mono, 2 - stereo)"
 651     },
 652     {
 653         .name  = "BUFSIZE",
 654         .tag   = AUD_OPT_INT,
 655         .valp  = &conf.bufsize,
 656         .descr = "(undocumented)"
 657     },
 658     { /* End of list */ }
 659 };
 660
 661 static struct audio_pcm_ops fmod_pcm_ops = {
 662     .init_out = fmod_init_out,
 663     .fini_out = fmod_fini_out,
 664     .run_out  = fmod_run_out,
 665     .write    = fmod_write,
 666     .ctl_out  = fmod_ctl_out,
 667
 668     .init_in  = fmod_init_in,
 669     .fini_in  = fmod_fini_in,
 670     .run_in   = fmod_run_in,
 671     .read     = fmod_read,
 672     .ctl_in   = fmod_ctl_in
 673 };
 674
 675 struct audio_driver fmod_audio_driver = {
 676     .name           = "fmod",
 677     .descr          = "FMOD 3.xx http://www.fmod.org",
 678     .options        = fmod_options,
 679     .init           = fmod_audio_init,
 680     .fini           = fmod_audio_fini,
 681     .pcm_ops        = &fmod_pcm_ops,
 682     .can_be_default = 1,
 683     .max_voices_out = INT_MAX,
 684     .max_voices_in  = INT_MAX,
 685     .voice_size_out = sizeof (FMODVoiceOut),
 686     .voice_size_in  = sizeof (FMODVoiceIn)
 687 };