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 //LordHavoc: increased the client sound limit from 512 to 4096 for the Nehahra movie
  61 #define MAX_SFX         4096
  62 sfx_t           *known_sfx;             // hunk allocated [MAX_SFX]
  63 int                     num_sfx;
  64
  65 sfx_t           *ambient_sfx[NUM_AMBIENTS];
  66
  67 int sound_started=0;
  68
  69 // FIXME: make bgmvolume/volume always be registered for sake of config saving, and add check for whether sound is enabled to menu
  70 cvar_t bgmvolume = {CVAR_SAVE, "bgmvolume", "1"};
  71 cvar_t volume = {CVAR_SAVE, "volume", "0.7"};
  72
  73 cvar_t nosound = {0, "nosound", "0"};
  74 cvar_t precache = {0, "precache", "1"};
  75 //cvar_t loadas8bit = {0, "loadas8bit", "0"};
  76 cvar_t bgmbuffer = {0, "bgmbuffer", "4096"};
  77 cvar_t ambient_level = {0, "ambient_level", "0.3"};
  78 cvar_t ambient_fade = {0, "ambient_fade", "100"};
  79 cvar_t snd_noextraupdate = {0, "snd_noextraupdate", "0"};
  80 cvar_t snd_show = {0, "snd_show", "0"};
  81 cvar_t _snd_mixahead = {CVAR_SAVE, "_snd_mixahead", "0.1"};
  82 cvar_t snd_swapstereo = {CVAR_SAVE, "snd_swapstereo", "0"};
  83
  84
  85 // ====================================================================
  86 // User-setable variables
  87 // ====================================================================
  88
  89
  90 //
  91 // Fake dma is a synchronous faking of the DMA progress used for
  92 // isolating performance in the renderer.  The fakedma_updates is
  93 // number of times S_Update() is called per second.
  94 //
  95
  96 qboolean fakedma = false;
  97 int fakedma_updates = 15;
  98
  99
 100 void S_AmbientOff (void)
 101 {
 102         snd_ambient = false;
 103 }
 104
 105
 106 void S_AmbientOn (void)
 107 {
 108         snd_ambient = true;
 109 }
 110
 111
 112 void S_SoundInfo_f(void)
 113 {
 114         if (!sound_started || !shm)
 115         {
 116                 Con_Printf ("sound system not started\n");
 117                 return;
 118         }
 119
 120     Con_Printf("%5d stereo\n", shm->channels - 1);
 121     Con_Printf("%5d samples\n", shm->samples);
 122     Con_Printf("%5d samplepos\n", shm->samplepos);
 123     Con_Printf("%5d samplebits\n", shm->samplebits);
 124     Con_Printf("%5d submission_chunk\n", shm->submission_chunk);
 125     Con_Printf("%5d speed\n", shm->speed);
 126     Con_Printf("0x%x dma buffer\n", shm->buffer);
 127         Con_Printf("%5d total_channels\n", total_channels);
 128 }
 129
 130
 131 /*
 132 ================
 133 S_Startup
 134 ================
 135 */
 136
 137 void S_Startup (void)
 138 {
 139         int             rc;
 140
 141         if (!snd_initialized)
 142                 return;
 143
 144         if (!fakedma)
 145         {
 146                 rc = SNDDMA_Init();
 147
 148                 if (!rc)
 149                 {
 150 #ifndef _WIN32
 151                         Con_Printf("S_Startup: SNDDMA_Init failed.\n");
 152 #endif
 153                         sound_started = 0;
 154                         return;
 155                 }
 156         }
 157
 158         sound_started = 1;
 159 }
 160
 161
 162 void S_Play2(void);
 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("play2", S_Play2);
 182         Cmd_AddCommand("playvol", S_PlayVol);
 183         Cmd_AddCommand("stopsound", S_StopAllSoundsC);
 184         Cmd_AddCommand("soundlist", S_SoundList);
 185         Cmd_AddCommand("soundinfo", S_SoundInfo_f);
 186
 187         Cvar_RegisterVariable(&nosound);
 188         Cvar_RegisterVariable(&volume);
 189         Cvar_RegisterVariable(&precache);
 190 //      Cvar_RegisterVariable(&loadas8bit);
 191         Cvar_RegisterVariable(&bgmvolume);
 192         Cvar_RegisterVariable(&bgmbuffer);
 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         Cvar_RegisterVariable(&snd_swapstereo); // LordHavoc: for people with backwards sound wiring
 199
 200         /*
 201         if (host_parms.memsize < 0x800000)
 202         {
 203                 Cvar_Set ("loadas8bit", "1");
 204                 Con_Printf ("loading all sounds as 8bit\n");
 205         }
 206         */
 207
 208
 209
 210         snd_initialized = true;
 211
 212         S_Startup ();
 213
 214         SND_InitScaletable ();
 215
 216         known_sfx = Hunk_AllocName (MAX_SFX*sizeof(sfx_t), "sfx_t");
 217         num_sfx = 0;
 218
 219 // create a piece of DMA memory
 220
 221         if (fakedma)
 222         {
 223                 shm = (void *) Hunk_AllocName(sizeof(*shm), "shm");
 224                 shm->splitbuffer = 0;
 225                 shm->samplebits = 16;
 226                 shm->speed = 22050;
 227                 shm->channels = 2;
 228                 shm->samples = 32768;
 229                 shm->samplepos = 0;
 230                 shm->soundalive = true;
 231                 shm->gamealive = true;
 232                 shm->submission_chunk = 1;
 233                 shm->buffer = Hunk_AllocName(1<<16, "shmbuf");
 234         }
 235
 236         if (!sound_started)
 237                 return;
 238
 239         Con_Printf ("Sound sampling rate: %i\n", shm->speed);
 240
 241         // provides a tick sound until washed clean
 242
 243 //      if (shm->buffer)
 244 //              shm->buffer[4] = shm->buffer[5] = 0x7f; // force a pop for debugging
 245
 246         ambient_sfx[AMBIENT_WATER] = S_PrecacheSound ("ambience/water1.wav");
 247         ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav");
 248
 249         S_StopAllSounds (true);
 250 }
 251
 252
 253 // =======================================================================
 254 // Shutdown sound engine
 255 // =======================================================================
 256
 257 void S_Shutdown(void)
 258 {
 259
 260         if (!sound_started)
 261                 return;
 262
 263         if (shm)
 264                 shm->gamealive = 0;
 265
 266         shm = 0;
 267         sound_started = 0;
 268
 269         if (!fakedma)
 270         {
 271                 SNDDMA_Shutdown();
 272         }
 273 }
 274
 275
 276 // =======================================================================
 277 // Load a sound
 278 // =======================================================================
 279
 280 /*
 281 ==================
 282 S_FindName
 283
 284 ==================
 285 */
 286 sfx_t *S_FindName (char *name)
 287 {
 288         int             i;
 289         sfx_t   *sfx;
 290
 291         if (!name)
 292                 Host_Error ("S_FindName: NULL\n");
 293
 294         if (strlen(name) >= MAX_QPATH)
 295                 Host_Error ("Sound name too long: %s", name);
 296
 297 // see if already loaded
 298         for (i=0 ; i < num_sfx ; i++)
 299                 if (!strcmp(known_sfx[i].name, name))
 300                 {
 301                         return &known_sfx[i];
 302                 }
 303
 304         if (num_sfx == MAX_SFX)
 305                 Sys_Error ("S_FindName: out of sfx_t");
 306
 307         sfx = &known_sfx[i];
 308         strcpy (sfx->name, name);
 309
 310         num_sfx++;
 311
 312         return sfx;
 313 }
 314
 315
 316 /*
 317 ==================
 318 S_TouchSound
 319
 320 ==================
 321 */
 322 void S_TouchSound (char *name)
 323 {
 324         sfx_t   *sfx;
 325
 326         if (!sound_started)
 327                 return;
 328
 329         sfx = S_FindName (name);
 330         Cache_Check (&sfx->cache);
 331 }
 332
 333 /*
 334 ==================
 335 S_PrecacheSound
 336
 337 ==================
 338 */
 339 sfx_t *S_PrecacheSound (char *name)
 340 {
 341         sfx_t   *sfx;
 342
 343         if (!sound_started || nosound.value)
 344                 return NULL;
 345
 346         sfx = S_FindName (name);
 347
 348 // cache it in
 349         if (precache.value)
 350                 S_LoadSound (sfx);
 351
 352         return sfx;
 353 }
 354
 355
 356 //=============================================================================
 357
 358 /*
 359 =================
 360 SND_PickChannel
 361 =================
 362 */
 363 channel_t *SND_PickChannel(int entnum, int entchannel)
 364 {
 365     int ch_idx;
 366     int first_to_die;
 367     int life_left;
 368
 369 // Check for replacement sound, or find the best one to replace
 370     first_to_die = -1;
 371     life_left = 0x7fffffff;
 372     for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
 373     {
 374                 if (entchannel != 0             // channel 0 never overrides
 375                 && channels[ch_idx].entnum == entnum
 376                 && (channels[ch_idx].entchannel == entchannel || entchannel == -1) )
 377                 {       // always override sound from same entity
 378                         first_to_die = ch_idx;
 379                         break;
 380                 }
 381
 382                 // don't let monster sounds override player sounds
 383                 if (channels[ch_idx].entnum == cl.viewentity && entnum != cl.viewentity && channels[ch_idx].sfx)
 384                         continue;
 385
 386                 if (channels[ch_idx].end - paintedtime < life_left)
 387                 {
 388                         life_left = channels[ch_idx].end - paintedtime;
 389                         first_to_die = ch_idx;
 390                 }
 391    }
 392
 393         if (first_to_die == -1)
 394                 return NULL;
 395
 396         if (channels[first_to_die].sfx)
 397                 channels[first_to_die].sfx = NULL;
 398
 399     return &channels[first_to_die];
 400 }
 401
 402 /*
 403 =================
 404 SND_Spatialize
 405 =================
 406 */
 407 void SND_Spatialize(channel_t *ch)
 408 {
 409     vec_t dot;
 410     vec_t dist;
 411     vec_t lscale, rscale, scale;
 412     vec3_t source_vec;
 413         sfx_t *snd;
 414
 415 // anything coming from the view entity will always be full volume
 416 // LordHavoc: make sounds with ATTN_NONE have no spatialization
 417         if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
 418         {
 419                 ch->leftvol = ch->master_vol;
 420                 ch->rightvol = ch->master_vol;
 421                 return;
 422         }
 423
 424 // calculate stereo seperation and distance attenuation
 425
 426         snd = ch->sfx;
 427         VectorSubtract(ch->origin, listener_origin, source_vec);
 428
 429         dist = VectorNormalizeLength(source_vec) * ch->dist_mult;
 430
 431         dot = DotProduct(listener_right, source_vec);
 432
 433         if (shm->channels == 1)
 434         {
 435                 rscale = 1.0;
 436                 lscale = 1.0;
 437         }
 438         else
 439         {
 440                 rscale = 1.0 + dot;
 441                 lscale = 1.0 - dot;
 442         }
 443
 444 // add in distance effect
 445         scale = (1.0 - dist) * rscale;
 446         ch->rightvol = (int) (ch->master_vol * scale);
 447         if (ch->rightvol < 0)
 448                 ch->rightvol = 0;
 449
 450         scale = (1.0 - dist) * lscale;
 451         ch->leftvol = (int) (ch->master_vol * scale);
 452         if (ch->leftvol < 0)
 453                 ch->leftvol = 0;
 454 }
 455
 456
 457 // =======================================================================
 458 // Start a sound effect
 459 // =======================================================================
 460
 461 void S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 462 {
 463         channel_t *target_chan, *check;
 464         sfxcache_t      *sc;
 465         int             vol;
 466         int             ch_idx;
 467         int             skip;
 468
 469         if (!sound_started)
 470                 return;
 471
 472         if (!sfx)
 473                 return;
 474
 475         if (nosound.value)
 476                 return;
 477
 478         vol = fvol*255;
 479
 480 // pick a channel to play on
 481         target_chan = SND_PickChannel(entnum, entchannel);
 482         if (!target_chan)
 483                 return;
 484
 485 // spatialize
 486         memset (target_chan, 0, sizeof(*target_chan));
 487         VectorCopy(origin, target_chan->origin);
 488         target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
 489         target_chan->master_vol = vol;
 490         target_chan->entnum = entnum;
 491         target_chan->entchannel = entchannel;
 492         SND_Spatialize(target_chan);
 493
 494         if (!target_chan->leftvol && !target_chan->rightvol)
 495                 return;         // not audible at all
 496
 497 // new channel
 498         sc = S_LoadSound (sfx);
 499         if (!sc)
 500         {
 501                 target_chan->sfx = NULL;
 502                 return;         // couldn't load the sound's data
 503         }
 504
 505         target_chan->sfx = sfx;
 506         target_chan->pos = 0.0;
 507     target_chan->end = paintedtime + sc->length;
 508
 509 // if an identical sound has also been started this frame, offset the pos
 510 // a bit to keep it from just making the first one louder
 511         check = &channels[NUM_AMBIENTS];
 512     for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
 513     {
 514                 if (check == target_chan)
 515                         continue;
 516                 if (check->sfx == sfx && !check->pos)
 517                 {
 518                         // LordHavoc: fixed skip calculations
 519                         skip = 0.1 * shm->speed;
 520                         if (skip > sc->length)
 521                                 skip = sc->length;
 522                         if (skip > 0)
 523                                 skip = rand() % skip;
 524                         target_chan->pos += skip;
 525                         target_chan->end -= skip;
 526                         break;
 527                 }
 528
 529         }
 530 }
 531
 532 void S_StopSound(int entnum, int entchannel)
 533 {
 534         int i;
 535
 536         for (i=0 ; i<MAX_DYNAMIC_CHANNELS ; i++)
 537         {
 538                 if (channels[i].entnum == entnum
 539                         && channels[i].entchannel == entchannel)
 540                 {
 541                         channels[i].end = 0;
 542                         channels[i].sfx = NULL;
 543                         return;
 544                 }
 545         }
 546 }
 547
 548 void S_StopAllSounds(qboolean clear)
 549 {
 550         int             i;
 551
 552         if (!sound_started)
 553                 return;
 554
 555         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 556
 557         for (i=0 ; i<MAX_CHANNELS ; i++)
 558                 if (channels[i].sfx)
 559                         channels[i].sfx = NULL;
 560
 561         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 562
 563         if (clear)
 564                 S_ClearBuffer ();
 565 }
 566
 567 void S_StopAllSoundsC (void)
 568 {
 569         S_StopAllSounds (true);
 570 }
 571
 572 void S_ClearBuffer (void)
 573 {
 574         int             clear;
 575
 576 #ifdef _WIN32
 577         if (!sound_started || !shm || (!shm->buffer && !pDSBuf))
 578 #else
 579         if (!sound_started || !shm || !shm->buffer)
 580 #endif
 581                 return;
 582
 583         if (shm->samplebits == 8)
 584                 clear = 0x80;
 585         else
 586                 clear = 0;
 587
 588 #ifdef _WIN32
 589         if (pDSBuf)
 590         {
 591                 DWORD   dwSize;
 592                 DWORD   *pData;
 593                 int             reps;
 594                 HRESULT hresult;
 595
 596                 reps = 0;
 597
 598                 while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, &pData, &dwSize, NULL, NULL, 0)) != DS_OK)
 599                 {
 600                         if (hresult != DSERR_BUFFERLOST)
 601                         {
 602                                 Con_Printf ("S_ClearBuffer: DS::Lock Sound Buffer Failed\n");
 603                                 S_Shutdown ();
 604                                 return;
 605                         }
 606
 607                         if (++reps > 10000)
 608                         {
 609                                 Con_Printf ("S_ClearBuffer: DS: couldn't restore buffer\n");
 610                                 S_Shutdown ();
 611                                 return;
 612                         }
 613                 }
 614
 615                 memset(pData, clear, shm->samples * shm->samplebits/8);
 616
 617                 pDSBuf->lpVtbl->Unlock(pDSBuf, pData, dwSize, NULL, 0);
 618
 619         }
 620         else
 621 #endif
 622         {
 623                 memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
 624         }
 625 }
 626
 627
 628 /*
 629 =================
 630 S_StaticSound
 631 =================
 632 */
 633 void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
 634 {
 635         channel_t       *ss;
 636         sfxcache_t              *sc;
 637
 638         if (!sfx)
 639                 return;
 640
 641         if (total_channels == MAX_CHANNELS)
 642         {
 643                 Con_Printf ("total_channels == MAX_CHANNELS\n");
 644                 return;
 645         }
 646
 647         ss = &channels[total_channels];
 648         total_channels++;
 649
 650         sc = S_LoadSound (sfx);
 651         if (!sc)
 652                 return;
 653
 654         if (sc->loopstart == -1)
 655         {
 656                 Con_Printf ("Sound %s not looped\n", sfx->name);
 657                 return;
 658         }
 659
 660         ss->sfx = sfx;
 661         VectorCopy (origin, ss->origin);
 662         ss->master_vol = vol;
 663         ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
 664     ss->end = paintedtime + sc->length;
 665
 666         SND_Spatialize (ss);
 667 }
 668
 669
 670 //=============================================================================
 671
 672 /*
 673 ===================
 674 S_UpdateAmbientSounds
 675 ===================
 676 */
 677 void S_UpdateAmbientSounds (void)
 678 {
 679         mleaf_t         *l;
 680         float           vol;
 681         int                     ambient_channel;
 682         channel_t       *chan;
 683
 684         // LordHavoc: kill ambient sounds until proven otherwise
 685         for (ambient_channel = 0 ; ambient_channel < NUM_AMBIENTS;ambient_channel++)
 686                 channels[ambient_channel].sfx = NULL;
 687
 688         if (!snd_ambient || !cl.worldmodel || ambient_level.value <= 0)
 689                 return;
 690
 691         l = Mod_PointInLeaf (listener_origin, cl.worldmodel);
 692         if (!l)
 693                 return;
 694
 695 // calc ambient sound levels
 696         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 697         {
 698                 chan = &channels[ambient_channel];
 699                 chan->sfx = ambient_sfx[ambient_channel];
 700
 701                 vol = ambient_level.value * l->ambient_sound_level[ambient_channel];
 702                 if (vol < 8)
 703                         vol = 0;
 704
 705         // don't adjust volume too fast
 706                 if (chan->master_vol < vol)
 707                 {
 708                         chan->master_vol += host_realframetime * ambient_fade.value;
 709                         if (chan->master_vol > vol)
 710                                 chan->master_vol = vol;
 711                 }
 712                 else if (chan->master_vol > vol)
 713                 {
 714                         chan->master_vol -= host_realframetime * ambient_fade.value;
 715                         if (chan->master_vol < vol)
 716                                 chan->master_vol = vol;
 717                 }
 718
 719                 chan->leftvol = chan->rightvol = chan->master_vol;
 720         }
 721 }
 722
 723
 724 /*
 725 ============
 726 S_Update
 727
 728 Called once each time through the main loop
 729 ============
 730 */
 731 void S_Update(vec3_t origin, vec3_t forward, vec3_t right, vec3_t up)
 732 {
 733         int                     i, j;
 734         int                     total;
 735         channel_t       *ch;
 736         channel_t       *combine;
 737
 738         if (!sound_started || (snd_blocked > 0))
 739                 return;
 740
 741         VectorCopy(origin, listener_origin);
 742         VectorCopy(forward, listener_forward);
 743         VectorCopy(right, listener_right);
 744         VectorCopy(up, listener_up);
 745
 746 // update general area ambient sound sources
 747         S_UpdateAmbientSounds ();
 748
 749         combine = NULL;
 750
 751 // update spatialization for static and dynamic sounds
 752         ch = channels+NUM_AMBIENTS;
 753         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
 754         {
 755                 if (!ch->sfx)
 756                         continue;
 757                 SND_Spatialize(ch);         // respatialize channel
 758                 if (!ch->leftvol && !ch->rightvol)
 759                         continue;
 760
 761         // try to combine static sounds with a previous channel of the same
 762         // sound effect so we don't mix five torches every frame
 763
 764                 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
 765                 {
 766                 // see if it can just use the last one
 767                         if (combine && combine->sfx == ch->sfx)
 768                         {
 769                                 combine->leftvol += ch->leftvol;
 770                                 combine->rightvol += ch->rightvol;
 771                                 ch->leftvol = ch->rightvol = 0;
 772                                 continue;
 773                         }
 774                 // search for one
 775                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
 776                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
 777                                 if (combine->sfx == ch->sfx)
 778                                         break;
 779
 780                         if (j == total_channels)
 781                         {
 782                                 combine = NULL;
 783                         }
 784                         else
 785                         {
 786                                 if (combine != ch)
 787                                 {
 788                                         combine->leftvol += ch->leftvol;
 789                                         combine->rightvol += ch->rightvol;
 790                                         ch->leftvol = ch->rightvol = 0;
 791                                 }
 792                                 continue;
 793                         }
 794                 }
 795
 796
 797         }
 798
 799 //
 800 // debugging output
 801 //
 802         if (snd_show.value)
 803         {
 804                 total = 0;
 805                 ch = channels;
 806                 for (i=0 ; i<total_channels; i++, ch++)
 807                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
 808                         {
 809                                 //Con_Printf ("%3i %3i %s\n", ch->leftvol, ch->rightvol, ch->sfx->name);
 810                                 total++;
 811                         }
 812
 813                 Con_Printf ("----(%i)----\n", total);
 814         }
 815
 816 // mix some sound
 817         S_Update_();
 818 }
 819
 820 void GetSoundtime(void)
 821 {
 822         int             samplepos;
 823         static  int             buffers;
 824         static  int             oldsamplepos;
 825         int             fullsamples;
 826
 827         fullsamples = shm->samples / shm->channels;
 828
 829 // it is possible to miscount buffers if it has wrapped twice between
 830 // calls to S_Update.  Oh well.
 831 #ifdef __sun__
 832         soundtime = SNDDMA_GetSamples();
 833 #else
 834         samplepos = SNDDMA_GetDMAPos();
 835
 836
 837         if (samplepos < oldsamplepos)
 838         {
 839                 buffers++;                                      // buffer wrapped
 840
 841                 if (paintedtime > 0x40000000)
 842                 {       // time to chop things off to avoid 32 bit limits
 843                         buffers = 0;
 844                         paintedtime = fullsamples;
 845                         S_StopAllSounds (true);
 846                 }
 847         }
 848         oldsamplepos = samplepos;
 849
 850         soundtime = buffers*fullsamples + samplepos/shm->channels;
 851 #endif
 852 }
 853
 854 void IN_Accumulate (void);
 855
 856 void S_ExtraUpdate (void)
 857 {
 858
 859 #ifdef _WIN32
 860         IN_Accumulate ();
 861 #endif
 862
 863         if (snd_noextraupdate.value)
 864                 return;         // don't pollute timings
 865         S_Update_();
 866 }
 867
 868 void S_Update_(void)
 869 {
 870         unsigned        endtime;
 871         int                             samps;
 872
 873         if (!sound_started || (snd_blocked > 0))
 874                 return;
 875
 876 // Updates DMA time
 877         GetSoundtime();
 878
 879 // check to make sure that we haven't overshot
 880         if (paintedtime < soundtime)
 881         {
 882                 //Con_Printf ("S_Update_ : overflow\n");
 883                 paintedtime = soundtime;
 884         }
 885
 886 // mix ahead of current position
 887         endtime = soundtime + _snd_mixahead.value * shm->speed;
 888         samps = shm->samples >> (shm->channels-1);
 889         if (endtime - soundtime > samps)
 890                 endtime = soundtime + samps;
 891
 892 #ifdef _WIN32
 893 // if the buffer was lost or stopped, restore it and/or restart it
 894         {
 895                 DWORD   dwStatus;
 896
 897                 if (pDSBuf)
 898                 {
 899                         if (pDSBuf->lpVtbl->GetStatus (pDSBuf, &dwStatus) != DD_OK)
 900                                 Con_Printf ("Couldn't get sound buffer status\n");
 901
 902                         if (dwStatus & DSBSTATUS_BUFFERLOST)
 903                                 pDSBuf->lpVtbl->Restore (pDSBuf);
 904
 905                         if (!(dwStatus & DSBSTATUS_PLAYING))
 906                                 pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
 907                 }
 908         }
 909 #endif
 910
 911         S_PaintChannels (endtime);
 912
 913         SNDDMA_Submit ();
 914 }
 915
 916 /*
 917 ===============================================================================
 918
 919 console functions
 920
 921 ===============================================================================
 922 */
 923
 924 void S_Play(void)
 925 {
 926         static int hash=345;
 927         int     i;
 928         char name[256];
 929         sfx_t   *sfx;
 930
 931         i = 1;
 932         while (i<Cmd_Argc())
 933         {
 934                 if (!strrchr(Cmd_Argv(i), '.'))
 935                 {
 936                         strcpy(name, Cmd_Argv(i));
 937                         strcat(name, ".wav");
 938                 }
 939                 else
 940                         strcpy(name, Cmd_Argv(i));
 941                 sfx = S_PrecacheSound(name);
 942                 S_StartSound(hash++, 0, sfx, listener_origin, 1.0, 1.0);
 943                 i++;
 944         }
 945 }
 946
 947 void S_Play2(void)
 948 {
 949         static int hash=345;
 950         int     i;
 951         char name[256];
 952         sfx_t   *sfx;
 953
 954         i = 1;
 955         while (i<Cmd_Argc())
 956         {
 957                 if (!strrchr(Cmd_Argv(i), '.'))
 958                 {
 959                         strcpy(name, Cmd_Argv(i));
 960                         strcat(name, ".wav");
 961                 }
 962                 else
 963                         strcpy(name, Cmd_Argv(i));
 964                 sfx = S_PrecacheSound(name);
 965                 S_StartSound(hash++, 0, sfx, listener_origin, 1.0, 0.0);
 966                 i++;
 967         }
 968 }
 969
 970 void S_PlayVol(void)
 971 {
 972         static int hash=543;
 973         int i;
 974         float vol;
 975         char name[256];
 976         sfx_t   *sfx;
 977
 978         i = 1;
 979         while (i<Cmd_Argc())
 980         {
 981                 if (!strrchr(Cmd_Argv(i), '.'))
 982                 {
 983                         strcpy(name, Cmd_Argv(i));
 984                         strcat(name, ".wav");
 985                 }
 986                 else
 987                         strcpy(name, Cmd_Argv(i));
 988                 sfx = S_PrecacheSound(name);
 989                 vol = atof(Cmd_Argv(i+1));
 990                 S_StartSound(hash++, 0, sfx, listener_origin, vol, 1.0);
 991                 i+=2;
 992         }
 993 }
 994
 995 void S_SoundList(void)
 996 {
 997         int             i;
 998         sfx_t   *sfx;
 999         sfxcache_t      *sc;
1000         int             size, total;
1001
1002         total = 0;
1003         for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
1004         {
1005                 sc = Cache_Check (&sfx->cache);
1006                 if (!sc)
1007                         continue;
1008                 size = sc->length*sc->width*(sc->stereo+1);
1009                 total += size;
1010                 if (sc->loopstart >= 0)
1011                         Con_Printf ("L");
1012                 else
1013                         Con_Printf (" ");
1014                 Con_Printf("(%2db) %6i : %s\n",sc->width*8,  size, sfx->name);
1015         }
1016         Con_Printf ("Total resident: %i\n", total);
1017 }
1018
1019
1020 void S_LocalSound (char *sound)
1021 {
1022         sfx_t   *sfx;
1023
1024         if (nosound.value)
1025                 return;
1026         if (!sound_started)
1027                 return;
1028
1029         sfx = S_PrecacheSound (sound);
1030         if (!sfx)
1031         {
1032                 Con_Printf ("S_LocalSound: can't cache %s\n", sound);
1033                 return;
1034         }
1035         S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1);
1036 }
1037
1038
1039 void S_ClearPrecache (void)
1040 {
1041 }
1042
1043
1044 void S_BeginPrecaching (void)
1045 {
1046 }
1047
1048
1049 void S_EndPrecaching (void)
1050 {
1051 }
1052