snd_dma.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // snd_dma.c -- main control for any streaming sound output device
  21
  22 #include "quakedef.h"
  23
  24 #ifdef WIN32
  25 #include "winquake.h"
  26 #endif
  27
  28 void S_Play(void);
  29 void S_PlayVol(void);
  30 void S_SoundList(void);
  31 void S_Update_();
  32 void S_StopAllSounds(qboolean clear);
  33 void S_StopAllSoundsC(void);
  34
  35 // =======================================================================
  36 // Internal sound data & structures
  37 // =======================================================================
  38
  39 channel_t   channels[MAX_CHANNELS];
  40 int                     total_channels;
  41
  42 int                             snd_blocked = 0;
  43 static qboolean snd_ambient = 1;
  44 qboolean                snd_initialized = false;
  45
  46 // pointer should go away
  47 volatile dma_t  *shm = 0;
  48 volatile dma_t sn;
  49
  50 vec3_t          listener_origin;
  51 vec3_t          listener_forward;
  52 vec3_t          listener_right;
  53 vec3_t          listener_up;
  54 vec_t           sound_nominal_clip_dist=1000.0;
  55
  56 int                     soundtime;              // sample PAIRS
  57 int             paintedtime;    // sample PAIRS
  58
  59
  60 #define MAX_SFX         512
  61 sfx_t           *known_sfx;             // hunk allocated [MAX_SFX]
  62 int                     num_sfx;
  63
  64 sfx_t           *ambient_sfx[NUM_AMBIENTS];
  65
  66 int             desired_speed = 11025;
  67 int             desired_bits = 16;
  68
  69 int sound_started=0;
  70
  71 cvar_t bgmvolume = {"bgmvolume", "1", true};
  72 cvar_t bgmtype = {"bgmtype", "cd", true};   // cd or none
  73
  74 cvar_t volume = {"volume", "0.7", true};
  75
  76 cvar_t nosound = {"nosound", "0"};
  77 cvar_t precache = {"precache", "1"};
  78 cvar_t loadas8bit = {"loadas8bit", "0"};
  79 cvar_t bgmbuffer = {"bgmbuffer", "4096"};
  80 cvar_t ambient_level = {"ambient_level", "0.3"};
  81 cvar_t ambient_fade = {"ambient_fade", "100"};
  82 cvar_t snd_noextraupdate = {"snd_noextraupdate", "0"};
  83 cvar_t snd_show = {"snd_show", "0"};
  84 cvar_t _snd_mixahead = {"_snd_mixahead", "0.1", true};
  85
  86
  87 // ====================================================================
  88 // User-setable variables
  89 // ====================================================================
  90
  91
  92 //
  93 // Fake dma is a synchronous faking of the DMA progress used for
  94 // isolating performance in the renderer.  The fakedma_updates is
  95 // number of times S_Update() is called per second.
  96 //
  97
  98 qboolean fakedma = false;
  99 int fakedma_updates = 15;
 100
 101
 102 void S_AmbientOff (void)
 103 {
 104         snd_ambient = false;
 105 }
 106
 107
 108 void S_AmbientOn (void)
 109 {
 110         snd_ambient = true;
 111 }
 112
 113
 114 void S_SoundInfo_f(void)
 115 {
 116         if (!sound_started || !shm)
 117         {
 118                 Con_Printf ("sound system not started\n");
 119                 return;
 120         }
 121
 122     Con_Printf("%5d stereo\n", shm->channels - 1);
 123     Con_Printf("%5d samples\n", shm->samples);
 124     Con_Printf("%5d samplepos\n", shm->samplepos);
 125     Con_Printf("%5d samplebits\n", shm->samplebits);
 126     Con_Printf("%5d submission_chunk\n", shm->submission_chunk);
 127     Con_Printf("%5d speed\n", shm->speed);
 128     Con_Printf("0x%x dma buffer\n", shm->buffer);
 129         Con_Printf("%5d total_channels\n", total_channels);
 130 }
 131
 132
 133 /*
 134 ================
 135 S_Startup
 136 ================
 137 */
 138
 139 void S_Startup (void)
 140 {
 141         int             rc;
 142
 143         if (!snd_initialized)
 144                 return;
 145
 146         if (!fakedma)
 147         {
 148                 rc = SNDDMA_Init();
 149
 150                 if (!rc)
 151                 {
 152 #ifndef WIN32
 153                         Con_Printf("S_Startup: SNDDMA_Init failed.\n");
 154 #endif
 155                         sound_started = 0;
 156                         return;
 157                 }
 158         }
 159
 160         sound_started = 1;
 161 }
 162
 163
 164 /*
 165 ================
 166 S_Init
 167 ================
 168 */
 169 void S_Init (void)
 170 {
 171
 172         Con_Printf("\nSound Initialization\n");
 173
 174         if (COM_CheckParm("-nosound"))
 175                 return;
 176
 177         if (COM_CheckParm("-simsound"))
 178                 fakedma = true;
 179
 180         Cmd_AddCommand("play", S_Play);
 181         Cmd_AddCommand("playvol", S_PlayVol);
 182         Cmd_AddCommand("stopsound", S_StopAllSoundsC);
 183         Cmd_AddCommand("soundlist", S_SoundList);
 184         Cmd_AddCommand("soundinfo", S_SoundInfo_f);
 185
 186         Cvar_RegisterVariable(&nosound);
 187         Cvar_RegisterVariable(&volume);
 188         Cvar_RegisterVariable(&precache);
 189         Cvar_RegisterVariable(&loadas8bit);
 190         Cvar_RegisterVariable(&bgmvolume);
 191         Cvar_RegisterVariable(&bgmbuffer);
 192         Cvar_RegisterVariable(&bgmtype);
 193         Cvar_RegisterVariable(&ambient_level);
 194         Cvar_RegisterVariable(&ambient_fade);
 195         Cvar_RegisterVariable(&snd_noextraupdate);
 196         Cvar_RegisterVariable(&snd_show);
 197         Cvar_RegisterVariable(&_snd_mixahead);
 198
 199         if (host_parms.memsize < 0x800000)
 200         {
 201                 Cvar_Set ("loadas8bit", "1");
 202                 Con_Printf ("loading all sounds as 8bit\n");
 203         }
 204
 205
 206
 207         snd_initialized = true;
 208
 209         S_Startup ();
 210
 211         SND_InitScaletable ();
 212
 213         known_sfx = Hunk_AllocName (MAX_SFX*sizeof(sfx_t), "sfx_t");
 214         num_sfx = 0;
 215
 216 // create a piece of DMA memory
 217
 218         if (fakedma)
 219         {
 220                 shm = (void *) Hunk_AllocName(sizeof(*shm), "shm");
 221                 shm->splitbuffer = 0;
 222                 shm->samplebits = 16;
 223                 shm->speed = 22050;
 224                 shm->channels = 2;
 225                 shm->samples = 32768;
 226                 shm->samplepos = 0;
 227                 shm->soundalive = true;
 228                 shm->gamealive = true;
 229                 shm->submission_chunk = 1;
 230                 shm->buffer = Hunk_AllocName(1<<16, "shmbuf");
 231         }
 232
 233         Con_Printf ("Sound sampling rate: %i\n", shm->speed);
 234
 235         // provides a tick sound until washed clean
 236
 237 //      if (shm->buffer)
 238 //              shm->buffer[4] = shm->buffer[5] = 0x7f; // force a pop for debugging
 239
 240         ambient_sfx[AMBIENT_WATER] = S_PrecacheSound ("ambience/water1.wav");
 241         ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav");
 242
 243         S_StopAllSounds (true);
 244 }
 245
 246
 247 // =======================================================================
 248 // Shutdown sound engine
 249 // =======================================================================
 250
 251 void S_Shutdown(void)
 252 {
 253
 254         if (!sound_started)
 255                 return;
 256
 257         if (shm)
 258                 shm->gamealive = 0;
 259
 260         shm = 0;
 261         sound_started = 0;
 262
 263         if (!fakedma)
 264         {
 265                 SNDDMA_Shutdown();
 266         }
 267 }
 268
 269
 270 // =======================================================================
 271 // Load a sound
 272 // =======================================================================
 273
 274 /*
 275 ==================
 276 S_FindName
 277
 278 ==================
 279 */
 280 sfx_t *S_FindName (char *name)
 281 {
 282         int             i;
 283         sfx_t   *sfx;
 284
 285         if (!name)
 286                 Sys_Error ("S_FindName: NULL\n");
 287
 288         if (Q_strlen(name) >= MAX_QPATH)
 289                 Sys_Error ("Sound name too long: %s", name);
 290
 291 // see if already loaded
 292         for (i=0 ; i < num_sfx ; i++)
 293                 if (!Q_strcmp(known_sfx[i].name, name))
 294                 {
 295                         return &known_sfx[i];
 296                 }
 297
 298         if (num_sfx == MAX_SFX)
 299                 Sys_Error ("S_FindName: out of sfx_t");
 300
 301         sfx = &known_sfx[i];
 302         strcpy (sfx->name, name);
 303
 304         num_sfx++;
 305
 306         return sfx;
 307 }
 308
 309
 310 /*
 311 ==================
 312 S_TouchSound
 313
 314 ==================
 315 */
 316 void S_TouchSound (char *name)
 317 {
 318         sfx_t   *sfx;
 319
 320         if (!sound_started)
 321                 return;
 322
 323         sfx = S_FindName (name);
 324         Cache_Check (&sfx->cache);
 325 }
 326
 327 /*
 328 ==================
 329 S_PrecacheSound
 330
 331 ==================
 332 */
 333 sfx_t *S_PrecacheSound (char *name)
 334 {
 335         sfx_t   *sfx;
 336
 337         if (!sound_started || nosound.value)
 338                 return NULL;
 339
 340         sfx = S_FindName (name);
 341
 342 // cache it in
 343         if (precache.value)
 344                 S_LoadSound (sfx);
 345
 346         return sfx;
 347 }
 348
 349
 350 //=============================================================================
 351
 352 /*
 353 =================
 354 SND_PickChannel
 355 =================
 356 */
 357 channel_t *SND_PickChannel(int entnum, int entchannel)
 358 {
 359     int ch_idx;
 360     int first_to_die;
 361     int life_left;
 362
 363 // Check for replacement sound, or find the best one to replace
 364     first_to_die = -1;
 365     life_left = 0x7fffffff;
 366     for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
 367     {
 368                 if (entchannel != 0             // channel 0 never overrides
 369                 && channels[ch_idx].entnum == entnum
 370                 && (channels[ch_idx].entchannel == entchannel || entchannel == -1) )
 371                 {       // allways override sound from same entity
 372                         first_to_die = ch_idx;
 373                         break;
 374                 }
 375
 376                 // don't let monster sounds override player sounds
 377                 if (channels[ch_idx].entnum == cl.viewentity && entnum != cl.viewentity && channels[ch_idx].sfx)
 378                         continue;
 379
 380                 if (channels[ch_idx].end - paintedtime < life_left)
 381                 {
 382                         life_left = channels[ch_idx].end - paintedtime;
 383                         first_to_die = ch_idx;
 384                 }
 385    }
 386
 387         if (first_to_die == -1)
 388                 return NULL;
 389
 390         if (channels[first_to_die].sfx)
 391                 channels[first_to_die].sfx = NULL;
 392
 393     return &channels[first_to_die];
 394 }
 395
 396 /*
 397 =================
 398 SND_Spatialize
 399 =================
 400 */
 401 void SND_Spatialize(channel_t *ch)
 402 {
 403     vec_t dot;
 404     vec_t dist;
 405     vec_t lscale, rscale, scale;
 406     vec3_t source_vec;
 407         sfx_t *snd;
 408
 409 // anything coming from the view entity will allways be full volume
 410         if (ch->entnum == cl.viewentity)
 411         {
 412                 ch->leftvol = ch->master_vol;
 413                 ch->rightvol = ch->master_vol;
 414                 return;
 415         }
 416
 417 // calculate stereo seperation and distance attenuation
 418
 419         snd = ch->sfx;
 420         VectorSubtract(ch->origin, listener_origin, source_vec);
 421
 422         dist = VectorNormalize(source_vec) * ch->dist_mult;
 423
 424         dot = DotProduct(listener_right, source_vec);
 425
 426         if (shm->channels == 1)
 427         {
 428                 rscale = 1.0;
 429                 lscale = 1.0;
 430         }
 431         else
 432         {
 433                 rscale = 1.0 + dot;
 434                 lscale = 1.0 - dot;
 435         }
 436
 437 // add in distance effect
 438         scale = (1.0 - dist) * rscale;
 439         ch->rightvol = (int) (ch->master_vol * scale);
 440         if (ch->rightvol < 0)
 441                 ch->rightvol = 0;
 442
 443         scale = (1.0 - dist) * lscale;
 444         ch->leftvol = (int) (ch->master_vol * scale);
 445         if (ch->leftvol < 0)
 446                 ch->leftvol = 0;
 447 }
 448
 449
 450 // =======================================================================
 451 // Start a sound effect
 452 // =======================================================================
 453
 454 void S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 455 {
 456         channel_t *target_chan, *check;
 457         sfxcache_t      *sc;
 458         int             vol;
 459         int             ch_idx;
 460         int             skip;
 461
 462         if (!sound_started)
 463                 return;
 464
 465         if (!sfx)
 466                 return;
 467
 468         if (nosound.value)
 469                 return;
 470
 471         vol = fvol*255;
 472
 473 // pick a channel to play on
 474         target_chan = SND_PickChannel(entnum, entchannel);
 475         if (!target_chan)
 476                 return;
 477
 478 // spatialize
 479         memset (target_chan, 0, sizeof(*target_chan));
 480         VectorCopy(origin, target_chan->origin);
 481         target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
 482         target_chan->master_vol = vol;
 483         target_chan->entnum = entnum;
 484         target_chan->entchannel = entchannel;
 485         SND_Spatialize(target_chan);
 486
 487         if (!target_chan->leftvol && !target_chan->rightvol)
 488                 return;         // not audible at all
 489
 490 // new channel
 491         sc = S_LoadSound (sfx);
 492         if (!sc)
 493         {
 494                 target_chan->sfx = NULL;
 495                 return;         // couldn't load the sound's data
 496         }
 497
 498         target_chan->sfx = sfx;
 499         target_chan->pos = 0.0;
 500     target_chan->end = paintedtime + sc->length;
 501
 502 // if an identical sound has also been started this frame, offset the pos
 503 // a bit to keep it from just making the first one louder
 504         check = &channels[NUM_AMBIENTS];
 505     for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
 506     {
 507                 if (check == target_chan)
 508                         continue;
 509                 if (check->sfx == sfx && !check->pos)
 510                 {
 511                         skip = rand () % (int)(0.1*shm->speed);
 512                         if (skip >= target_chan->end)
 513                                 skip = target_chan->end - 1;
 514                         target_chan->pos += skip;
 515                         target_chan->end -= skip;
 516                         break;
 517                 }
 518
 519         }
 520 }
 521
 522 void S_StopSound(int entnum, int entchannel)
 523 {
 524         int i;
 525
 526         for (i=0 ; i<MAX_DYNAMIC_CHANNELS ; i++)
 527         {
 528                 if (channels[i].entnum == entnum
 529                         && channels[i].entchannel == entchannel)
 530                 {
 531                         channels[i].end = 0;
 532                         channels[i].sfx = NULL;
 533                         return;
 534                 }
 535         }
 536 }
 537
 538 void S_StopAllSounds(qboolean clear)
 539 {
 540         int             i;
 541
 542         if (!sound_started)
 543                 return;
 544
 545         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 546
 547         for (i=0 ; i<MAX_CHANNELS ; i++)
 548                 if (channels[i].sfx)
 549                         channels[i].sfx = NULL;
 550
 551         Q_memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 552
 553         if (clear)
 554                 S_ClearBuffer ();
 555 }
 556
 557 void S_StopAllSoundsC (void)
 558 {
 559         S_StopAllSounds (true);
 560 }
 561
 562 void S_ClearBuffer (void)
 563 {
 564         int             clear;
 565
 566 #ifdef WIN32
 567         if (!sound_started || !shm || (!shm->buffer && !pDSBuf))
 568 #else
 569         if (!sound_started || !shm || !shm->buffer)
 570 #endif
 571                 return;
 572
 573         if (shm->samplebits == 8)
 574                 clear = 0x80;
 575         else
 576                 clear = 0;
 577
 578 #ifdef WIN32
 579         if (pDSBuf)
 580         {
 581                 DWORD   dwSize;
 582                 DWORD   *pData;
 583                 int             reps;
 584                 HRESULT hresult;
 585
 586                 reps = 0;
 587
 588                 while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, &pData, &dwSize, NULL, NULL, 0)) != DS_OK)
 589                 {
 590                         if (hresult != DSERR_BUFFERLOST)
 591                         {
 592                                 Con_Printf ("S_ClearBuffer: DS::Lock Sound Buffer Failed\n");
 593                                 S_Shutdown ();
 594                                 return;
 595                         }
 596
 597                         if (++reps > 10000)
 598                         {
 599                                 Con_Printf ("S_ClearBuffer: DS: couldn't restore buffer\n");
 600                                 S_Shutdown ();
 601                                 return;
 602                         }
 603                 }
 604
 605                 Q_memset(pData, clear, shm->samples * shm->samplebits/8);
 606
 607                 pDSBuf->lpVtbl->Unlock(pDSBuf, pData, dwSize, NULL, 0);
 608
 609         }
 610         else
 611 #endif
 612         {
 613                 Q_memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
 614         }
 615 }
 616
 617
 618 /*
 619 =================
 620 S_StaticSound
 621 =================
 622 */
 623 void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
 624 {
 625         channel_t       *ss;
 626         sfxcache_t              *sc;
 627
 628         if (!sfx)
 629                 return;
 630
 631         if (total_channels == MAX_CHANNELS)
 632         {
 633                 Con_Printf ("total_channels == MAX_CHANNELS\n");
 634                 return;
 635         }
 636
 637         ss = &channels[total_channels];
 638         total_channels++;
 639
 640         sc = S_LoadSound (sfx);
 641         if (!sc)
 642                 return;
 643
 644         if (sc->loopstart == -1)
 645         {
 646                 Con_Printf ("Sound %s not looped\n", sfx->name);
 647                 return;
 648         }
 649
 650         ss->sfx = sfx;
 651         VectorCopy (origin, ss->origin);
 652         ss->master_vol = vol;
 653         ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
 654     ss->end = paintedtime + sc->length;
 655
 656         SND_Spatialize (ss);
 657 }
 658
 659
 660 //=============================================================================
 661
 662 /*
 663 ===================
 664 S_UpdateAmbientSounds
 665 ===================
 666 */
 667 void S_UpdateAmbientSounds (void)
 668 {
 669         mleaf_t         *l;
 670         float           vol;
 671         int                     ambient_channel;
 672         channel_t       *chan;
 673
 674         if (!snd_ambient)
 675                 return;
 676
 677 // calc ambient sound levels
 678         if (!cl.worldmodel)
 679                 return;
 680
 681         l = Mod_PointInLeaf (listener_origin, cl.worldmodel);
 682         if (!l || !ambient_level.value)
 683         {
 684                 for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 685                         channels[ambient_channel].sfx = NULL;
 686                 return;
 687         }
 688
 689         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 690         {
 691                 chan = &channels[ambient_channel];
 692                 chan->sfx = ambient_sfx[ambient_channel];
 693
 694                 vol = ambient_level.value * l->ambient_sound_level[ambient_channel];
 695                 if (vol < 8)
 696                         vol = 0;
 697
 698         // don't adjust volume too fast
 699                 if (chan->master_vol < vol)
 700                 {
 701                         chan->master_vol += host_frametime * ambient_fade.value;
 702                         if (chan->master_vol > vol)
 703                                 chan->master_vol = vol;
 704                 }
 705                 else if (chan->master_vol > vol)
 706                 {
 707                         chan->master_vol -= host_frametime * ambient_fade.value;
 708                         if (chan->master_vol < vol)
 709                                 chan->master_vol = vol;
 710                 }
 711
 712                 chan->leftvol = chan->rightvol = chan->master_vol;
 713         }
 714 }
 715
 716
 717 /*
 718 ============
 719 S_Update
 720
 721 Called once each time through the main loop
 722 ============
 723 */
 724 void S_Update(vec3_t origin, vec3_t forward, vec3_t right, vec3_t up)
 725 {
 726         int                     i, j;
 727         int                     total;
 728         channel_t       *ch;
 729         channel_t       *combine;
 730
 731         if (!sound_started || (snd_blocked > 0))
 732                 return;
 733
 734         VectorCopy(origin, listener_origin);
 735         VectorCopy(forward, listener_forward);
 736         VectorCopy(right, listener_right);
 737         VectorCopy(up, listener_up);
 738
 739 // update general area ambient sound sources
 740         S_UpdateAmbientSounds ();
 741
 742         combine = NULL;
 743
 744 // update spatialization for static and dynamic sounds
 745         ch = channels+NUM_AMBIENTS;
 746         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
 747         {
 748                 if (!ch->sfx)
 749                         continue;
 750                 SND_Spatialize(ch);         // respatialize channel
 751                 if (!ch->leftvol && !ch->rightvol)
 752                         continue;
 753
 754         // try to combine static sounds with a previous channel of the same
 755         // sound effect so we don't mix five torches every frame
 756
 757                 if (i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
 758                 {
 759                 // see if it can just use the last one
 760                         if (combine && combine->sfx == ch->sfx)
 761                         {
 762                                 combine->leftvol += ch->leftvol;
 763                                 combine->rightvol += ch->rightvol;
 764                                 ch->leftvol = ch->rightvol = 0;
 765                                 continue;
 766                         }
 767                 // search for one
 768                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
 769                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
 770                                 if (combine->sfx == ch->sfx)
 771                                         break;
 772
 773                         if (j == total_channels)
 774                         {
 775                                 combine = NULL;
 776                         }
 777                         else
 778                         {
 779                                 if (combine != ch)
 780                                 {
 781                                         combine->leftvol += ch->leftvol;
 782                                         combine->rightvol += ch->rightvol;
 783                                         ch->leftvol = ch->rightvol = 0;
 784                                 }
 785                                 continue;
 786                         }
 787                 }
 788
 789
 790         }
 791
 792 //
 793 // debugging output
 794 //
 795         if (snd_show.value)
 796         {
 797                 total = 0;
 798                 ch = channels;
 799                 for (i=0 ; i<total_channels; i++, ch++)
 800                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
 801                         {
 802                                 //Con_Printf ("%3i %3i %s\n", ch->leftvol, ch->rightvol, ch->sfx->name);
 803                                 total++;
 804                         }
 805
 806                 Con_Printf ("----(%i)----\n", total);
 807         }
 808
 809 // mix some sound
 810         S_Update_();
 811 }
 812
 813 void GetSoundtime(void)
 814 {
 815         int             samplepos;
 816         static  int             buffers;
 817         static  int             oldsamplepos;
 818         int             fullsamples;
 819
 820         fullsamples = shm->samples / shm->channels;
 821
 822 // it is possible to miscount buffers if it has wrapped twice between
 823 // calls to S_Update.  Oh well.
 824 #ifdef __sun__
 825         soundtime = SNDDMA_GetSamples();
 826 #else
 827         samplepos = SNDDMA_GetDMAPos();
 828
 829
 830         if (samplepos < oldsamplepos)
 831         {
 832                 buffers++;                                      // buffer wrapped
 833
 834                 if (paintedtime > 0x40000000)
 835                 {       // time to chop things off to avoid 32 bit limits
 836                         buffers = 0;
 837                         paintedtime = fullsamples;
 838                         S_StopAllSounds (true);
 839                 }
 840         }
 841         oldsamplepos = samplepos;
 842
 843         soundtime = buffers*fullsamples + samplepos/shm->channels;
 844 #endif
 845 }
 846
 847 void S_ExtraUpdate (void)
 848 {
 849
 850 #ifdef WIN32
 851         IN_Accumulate ();
 852 #endif
 853
 854         if (snd_noextraupdate.value)
 855                 return;         // don't pollute timings
 856         S_Update_();
 857 }
 858
 859 void S_Update_(void)
 860 {
 861         unsigned        endtime;
 862         int                             samps;
 863
 864         if (!sound_started || (snd_blocked > 0))
 865                 return;
 866
 867 // Updates DMA time
 868         GetSoundtime();
 869
 870 // check to make sure that we haven't overshot
 871         if (paintedtime < soundtime)
 872         {
 873                 //Con_Printf ("S_Update_ : overflow\n");
 874                 paintedtime = soundtime;
 875         }
 876
 877 // mix ahead of current position
 878         endtime = soundtime + _snd_mixahead.value * shm->speed;
 879         samps = shm->samples >> (shm->channels-1);
 880         if (endtime - soundtime > samps)
 881                 endtime = soundtime + samps;
 882
 883 #ifdef WIN32
 884 // if the buffer was lost or stopped, restore it and/or restart it
 885         {
 886                 DWORD   dwStatus;
 887
 888                 if (pDSBuf)
 889                 {
 890                         if (pDSBuf->lpVtbl->GetStatus (pDSBuf, &dwStatus) != DD_OK)
 891                                 Con_Printf ("Couldn't get sound buffer status\n");
 892
 893                         if (dwStatus & DSBSTATUS_BUFFERLOST)
 894                                 pDSBuf->lpVtbl->Restore (pDSBuf);
 895
 896                         if (!(dwStatus & DSBSTATUS_PLAYING))
 897                                 pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
 898                 }
 899         }
 900 #endif
 901
 902         S_PaintChannels (endtime);
 903
 904         SNDDMA_Submit ();
 905 }
 906
 907 /*
 908 ===============================================================================
 909
 910 console functions
 911
 912 ===============================================================================
 913 */
 914
 915 void S_Play(void)
 916 {
 917         static int hash=345;
 918         int     i;
 919         char name[256];
 920         sfx_t   *sfx;
 921
 922         i = 1;
 923         while (i<Cmd_Argc())
 924         {
 925                 if (!Q_strrchr(Cmd_Argv(i), '.'))
 926                 {
 927                         Q_strcpy(name, Cmd_Argv(i));
 928                         Q_strcat(name, ".wav");
 929                 }
 930                 else
 931                         Q_strcpy(name, Cmd_Argv(i));
 932                 sfx = S_PrecacheSound(name);
 933                 S_StartSound(hash++, 0, sfx, listener_origin, 1.0, 1.0);
 934                 i++;
 935         }
 936 }
 937
 938 void S_PlayVol(void)
 939 {
 940         static int hash=543;
 941         int i;
 942         float vol;
 943         char name[256];
 944         sfx_t   *sfx;
 945
 946         i = 1;
 947         while (i<Cmd_Argc())
 948         {
 949                 if (!Q_strrchr(Cmd_Argv(i), '.'))
 950                 {
 951                         Q_strcpy(name, Cmd_Argv(i));
 952                         Q_strcat(name, ".wav");
 953                 }
 954                 else
 955                         Q_strcpy(name, Cmd_Argv(i));
 956                 sfx = S_PrecacheSound(name);
 957                 vol = Q_atof(Cmd_Argv(i+1));
 958                 S_StartSound(hash++, 0, sfx, listener_origin, vol, 1.0);
 959                 i+=2;
 960         }
 961 }
 962
 963 void S_SoundList(void)
 964 {
 965         int             i;
 966         sfx_t   *sfx;
 967         sfxcache_t      *sc;
 968         int             size, total;
 969
 970         total = 0;
 971         for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
 972         {
 973                 sc = Cache_Check (&sfx->cache);
 974                 if (!sc)
 975                         continue;
 976                 size = sc->length*sc->width*(sc->stereo+1);
 977                 total += size;
 978                 if (sc->loopstart >= 0)
 979                         Con_Printf ("L");
 980                 else
 981                         Con_Printf (" ");
 982                 Con_Printf("(%2db) %6i : %s\n",sc->width*8,  size, sfx->name);
 983         }
 984         Con_Printf ("Total resident: %i\n", total);
 985 }
 986
 987
 988 void S_LocalSound (char *sound)
 989 {
 990         sfx_t   *sfx;
 991
 992         if (nosound.value)
 993                 return;
 994         if (!sound_started)
 995                 return;
 996
 997         sfx = S_PrecacheSound (sound);
 998         if (!sfx)
 999         {
1000                 Con_Printf ("S_LocalSound: can't cache %s\n", sound);
1001                 return;
1002         }
1003         S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1);
1004 }
1005
1006
1007 void S_ClearPrecache (void)
1008 {
1009 }
1010
1011
1012 void S_BeginPrecaching (void)
1013 {
1014 }
1015
1016
1017 void S_EndPrecaching (void)
1018 {
1019 }
1020