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                         Con_Printf("S_Startup: SNDDMA_Init failed.\n");
 151                         sound_started = 0;
 152                         return;
 153                 }
 154         }
 155
 156         sound_started = 1;
 157 }
 158
 159
 160 void S_Play2(void);
 161
 162 mempool_t *snd_mempool;
 163
 164 /*
 165 ================
 166 S_Init
 167 ================
 168 */
 169 void S_Init (void)
 170 {
 171         Con_Printf("\nSound Initialization\n");
 172
 173         if (COM_CheckParm("-nosound"))
 174                 return;
 175
 176         snd_mempool = Mem_AllocPool("sound");
 177
 178         if (COM_CheckParm("-simsound"))
 179                 fakedma = true;
 180
 181         Cmd_AddCommand("play", S_Play);
 182         Cmd_AddCommand("play2", S_Play2);
 183         Cmd_AddCommand("playvol", S_PlayVol);
 184         Cmd_AddCommand("stopsound", S_StopAllSoundsC);
 185         Cmd_AddCommand("soundlist", S_SoundList);
 186         Cmd_AddCommand("soundinfo", S_SoundInfo_f);
 187
 188         Cvar_RegisterVariable(&nosound);
 189         Cvar_RegisterVariable(&volume);
 190         Cvar_RegisterVariable(&precache);
 191 //      Cvar_RegisterVariable(&loadas8bit);
 192         Cvar_RegisterVariable(&bgmvolume);
 193         Cvar_RegisterVariable(&bgmbuffer);
 194         Cvar_RegisterVariable(&ambient_level);
 195         Cvar_RegisterVariable(&ambient_fade);
 196         Cvar_RegisterVariable(&snd_noextraupdate);
 197         Cvar_RegisterVariable(&snd_show);
 198         Cvar_RegisterVariable(&_snd_mixahead);
 199         Cvar_RegisterVariable(&snd_swapstereo); // LordHavoc: for people with backwards sound wiring
 200
 201         /*
 202         if (host_parms.memsize < 0x800000)
 203         {
 204                 Cvar_Set ("loadas8bit", "1");
 205                 Con_Printf ("loading all sounds as 8bit\n");
 206         }
 207         */
 208
 209
 210
 211         snd_initialized = true;
 212
 213         known_sfx = Mem_Alloc(snd_mempool, MAX_SFX*sizeof(sfx_t));
 214         num_sfx = 0;
 215
 216         S_Startup ();
 217
 218         SND_InitScaletable ();
 219
 220 // create a piece of DMA memory
 221
 222         if (fakedma)
 223         {
 224                 shm = (void *) Mem_Alloc(snd_mempool, sizeof(*shm));
 225                 shm->splitbuffer = 0;
 226                 shm->samplebits = 16;
 227                 shm->speed = 22050;
 228                 shm->channels = 2;
 229                 shm->samples = 32768;
 230                 shm->samplepos = 0;
 231                 shm->soundalive = true;
 232                 shm->gamealive = true;
 233                 shm->submission_chunk = 1;
 234                 shm->buffer = Mem_Alloc(snd_mempool, shm->channels * shm->samples * (shm->samplebits / 8));
 235         }
 236
 237         if (!sound_started)
 238                 return;
 239
 240         Con_Printf ("Sound sampling rate: %i\n", shm->speed);
 241
 242         // provides a tick sound until washed clean
 243
 244 //      if (shm->buffer)
 245 //              shm->buffer[4] = shm->buffer[5] = 0x7f; // force a pop for debugging
 246
 247         ambient_sfx[AMBIENT_WATER] = S_PrecacheSound ("ambience/water1.wav");
 248         ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav");
 249
 250         S_StopAllSounds (true);
 251 }
 252
 253
 254 // =======================================================================
 255 // Shutdown sound engine
 256 // =======================================================================
 257
 258 void S_Shutdown(void)
 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                 SNDDMA_Shutdown();
 271 }
 272
 273
 274 // =======================================================================
 275 // Load a sound
 276 // =======================================================================
 277
 278 /*
 279 ==================
 280 S_FindName
 281
 282 ==================
 283 */
 284 sfx_t *S_FindName (char *name)
 285 {
 286         int             i;
 287         sfx_t   *sfx;
 288
 289         if (!name)
 290                 Host_Error ("S_FindName: NULL\n");
 291
 292         if (strlen(name) >= MAX_QPATH)
 293                 Host_Error ("Sound name too long: %s", name);
 294
 295 // see if already loaded
 296         for (i=0 ; i < num_sfx ; i++)
 297                 if (!strcmp(known_sfx[i].name, name))
 298                 {
 299                         return &known_sfx[i];
 300                 }
 301
 302         if (num_sfx == MAX_SFX)
 303                 Sys_Error ("S_FindName: out of sfx_t");
 304
 305         sfx = &known_sfx[i];
 306         strcpy (sfx->name, name);
 307
 308         num_sfx++;
 309
 310         return sfx;
 311 }
 312
 313
 314 /*
 315 ==================
 316 S_TouchSound
 317
 318 ==================
 319 */
 320 void S_TouchSound (char *name)
 321 {
 322         sfx_t   *sfx;
 323
 324         if (!sound_started)
 325                 return;
 326
 327         sfx = S_FindName (name);
 328 }
 329
 330 /*
 331 ==================
 332 S_PrecacheSound
 333
 334 ==================
 335 */
 336 sfx_t *S_PrecacheSound (char *name)
 337 {
 338         sfx_t   *sfx;
 339
 340         if (!sound_started || nosound.integer)
 341                 return NULL;
 342
 343         sfx = S_FindName (name);
 344
 345 // cache it in
 346         if (precache.integer)
 347                 S_LoadSound (sfx);
 348
 349         return sfx;
 350 }
 351
 352
 353 //=============================================================================
 354
 355 /*
 356 =================
 357 SND_PickChannel
 358 =================
 359 */
 360 channel_t *SND_PickChannel(int entnum, int entchannel)
 361 {
 362     int ch_idx;
 363     int first_to_die;
 364     int life_left;
 365
 366 // Check for replacement sound, or find the best one to replace
 367     first_to_die = -1;
 368     life_left = 0x7fffffff;
 369     for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
 370     {
 371                 if (entchannel != 0             // channel 0 never overrides
 372                 && channels[ch_idx].entnum == entnum
 373                 && (channels[ch_idx].entchannel == entchannel || entchannel == -1) )
 374                 {       // always override sound from same entity
 375                         first_to_die = ch_idx;
 376                         break;
 377                 }
 378
 379                 // don't let monster sounds override player sounds
 380                 if (channels[ch_idx].entnum == cl.viewentity && entnum != cl.viewentity && channels[ch_idx].sfx)
 381                         continue;
 382
 383                 if (channels[ch_idx].end - paintedtime < life_left)
 384                 {
 385                         life_left = channels[ch_idx].end - paintedtime;
 386                         first_to_die = ch_idx;
 387                 }
 388    }
 389
 390         if (first_to_die == -1)
 391                 return NULL;
 392
 393         if (channels[first_to_die].sfx)
 394                 channels[first_to_die].sfx = NULL;
 395
 396     return &channels[first_to_die];
 397 }
 398
 399 /*
 400 =================
 401 SND_Spatialize
 402 =================
 403 */
 404 void SND_Spatialize(channel_t *ch)
 405 {
 406     vec_t dot;
 407     vec_t dist;
 408     vec_t lscale, rscale, scale;
 409     vec3_t source_vec;
 410         sfx_t *snd;
 411
 412 // anything coming from the view entity will always be full volume
 413 // LordHavoc: make sounds with ATTN_NONE have no spatialization
 414         if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
 415         {
 416                 ch->leftvol = ch->master_vol;
 417                 ch->rightvol = ch->master_vol;
 418                 return;
 419         }
 420
 421 // calculate stereo seperation and distance attenuation
 422
 423         snd = ch->sfx;
 424         VectorSubtract(ch->origin, listener_origin, source_vec);
 425
 426         dist = VectorNormalizeLength(source_vec) * ch->dist_mult;
 427
 428         dot = DotProduct(listener_right, source_vec);
 429
 430         if (shm->channels == 1)
 431         {
 432                 rscale = 1.0;
 433                 lscale = 1.0;
 434         }
 435         else
 436         {
 437                 rscale = 1.0 + dot;
 438                 lscale = 1.0 - dot;
 439         }
 440
 441 // add in distance effect
 442         scale = (1.0 - dist) * rscale;
 443         ch->rightvol = (int) (ch->master_vol * scale);
 444         if (ch->rightvol < 0)
 445                 ch->rightvol = 0;
 446
 447         scale = (1.0 - dist) * lscale;
 448         ch->leftvol = (int) (ch->master_vol * scale);
 449         if (ch->leftvol < 0)
 450                 ch->leftvol = 0;
 451 }
 452
 453
 454 // =======================================================================
 455 // Start a sound effect
 456 // =======================================================================
 457
 458 void S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 459 {
 460         channel_t *target_chan, *check;
 461         sfxcache_t      *sc;
 462         int             vol;
 463         int             ch_idx;
 464         int             skip;
 465
 466         if (!sound_started)
 467                 return;
 468
 469         if (!sfx)
 470                 return;
 471
 472         if (nosound.integer)
 473                 return;
 474
 475         vol = fvol*255;
 476
 477 // pick a channel to play on
 478         target_chan = SND_PickChannel(entnum, entchannel);
 479         if (!target_chan)
 480                 return;
 481
 482 // spatialize
 483         memset (target_chan, 0, sizeof(*target_chan));
 484         VectorCopy(origin, target_chan->origin);
 485         target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
 486         target_chan->master_vol = vol;
 487         target_chan->entnum = entnum;
 488         target_chan->entchannel = entchannel;
 489         SND_Spatialize(target_chan);
 490
 491         if (!target_chan->leftvol && !target_chan->rightvol)
 492                 return;         // not audible at all
 493
 494 // new channel
 495         sc = S_LoadSound (sfx);
 496         if (!sc)
 497         {
 498                 target_chan->sfx = NULL;
 499                 return;         // couldn't load the sound's data
 500         }
 501
 502         target_chan->sfx = sfx;
 503         target_chan->pos = 0.0;
 504     target_chan->end = paintedtime + sc->length;
 505
 506 // if an identical sound has also been started this frame, offset the pos
 507 // a bit to keep it from just making the first one louder
 508         check = &channels[NUM_AMBIENTS];
 509     for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
 510     {
 511                 if (check == target_chan)
 512                         continue;
 513                 if (check->sfx == sfx && !check->pos)
 514                 {
 515                         // LordHavoc: fixed skip calculations
 516                         skip = 0.1 * shm->speed;
 517                         if (skip > sc->length)
 518                                 skip = sc->length;
 519                         if (skip > 0)
 520                                 skip = rand() % skip;
 521                         target_chan->pos += skip;
 522                         target_chan->end -= skip;
 523                         break;
 524                 }
 525
 526         }
 527 }
 528
 529 void S_StopSound(int entnum, int entchannel)
 530 {
 531         int i;
 532
 533         for (i=0 ; i<MAX_DYNAMIC_CHANNELS ; i++)
 534         {
 535                 if (channels[i].entnum == entnum
 536                         && channels[i].entchannel == entchannel)
 537                 {
 538                         channels[i].end = 0;
 539                         channels[i].sfx = NULL;
 540                         return;
 541                 }
 542         }
 543 }
 544
 545 void S_StopAllSounds(qboolean clear)
 546 {
 547         int             i;
 548
 549         if (!sound_started)
 550                 return;
 551
 552         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 553
 554         for (i=0 ; i<MAX_CHANNELS ; i++)
 555                 if (channels[i].sfx)
 556                         channels[i].sfx = NULL;
 557
 558         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 559
 560         if (clear)
 561                 S_ClearBuffer ();
 562 }
 563
 564 void S_StopAllSoundsC (void)
 565 {
 566         S_StopAllSounds (true);
 567 }
 568
 569 void S_ClearBuffer (void)
 570 {
 571         int             clear;
 572
 573 #ifdef _WIN32
 574         if (!sound_started || !shm || (!shm->buffer && !pDSBuf))
 575 #else
 576         if (!sound_started || !shm || !shm->buffer)
 577 #endif
 578                 return;
 579
 580         if (shm->samplebits == 8)
 581                 clear = 0x80;
 582         else
 583                 clear = 0;
 584
 585 #ifdef _WIN32
 586         if (pDSBuf)
 587         {
 588                 DWORD   dwSize;
 589                 DWORD   *pData;
 590                 int             reps;
 591                 HRESULT hresult;
 592
 593                 reps = 0;
 594
 595                 while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, &pData, &dwSize, NULL, NULL, 0)) != DS_OK)
 596                 {
 597                         if (hresult != DSERR_BUFFERLOST)
 598                         {
 599                                 Con_Printf ("S_ClearBuffer: DS::Lock Sound Buffer Failed\n");
 600                                 S_Shutdown ();
 601                                 return;
 602                         }
 603
 604                         if (++reps > 10000)
 605                         {
 606                                 Con_Printf ("S_ClearBuffer: DS: couldn't restore buffer\n");
 607                                 S_Shutdown ();
 608                                 return;
 609                         }
 610                 }
 611
 612                 memset(pData, clear, shm->samples * shm->samplebits/8);
 613
 614                 pDSBuf->lpVtbl->Unlock(pDSBuf, pData, dwSize, NULL, 0);
 615
 616         }
 617         else
 618 #endif
 619         {
 620                 memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
 621         }
 622 }
 623
 624
 625 /*
 626 =================
 627 S_StaticSound
 628 =================
 629 */
 630 void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
 631 {
 632         channel_t       *ss;
 633         sfxcache_t              *sc;
 634
 635         if (!sfx)
 636                 return;
 637
 638         if (total_channels == MAX_CHANNELS)
 639         {
 640                 Con_Printf ("total_channels == MAX_CHANNELS\n");
 641                 return;
 642         }
 643
 644         ss = &channels[total_channels];
 645         total_channels++;
 646
 647         sc = S_LoadSound (sfx);
 648         if (!sc)
 649                 return;
 650
 651         if (sc->loopstart == -1)
 652         {
 653                 Con_Printf ("Sound %s not looped\n", sfx->name);
 654                 return;
 655         }
 656
 657         ss->sfx = sfx;
 658         VectorCopy (origin, ss->origin);
 659         ss->master_vol = vol;
 660         ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
 661     ss->end = paintedtime + sc->length;
 662
 663         SND_Spatialize (ss);
 664 }
 665
 666
 667 //=============================================================================
 668
 669 /*
 670 ===================
 671 S_UpdateAmbientSounds
 672 ===================
 673 */
 674 void S_UpdateAmbientSounds (void)
 675 {
 676         mleaf_t         *l;
 677         float           vol;
 678         int                     ambient_channel;
 679         channel_t       *chan;
 680
 681         // LordHavoc: kill ambient sounds until proven otherwise
 682         for (ambient_channel = 0 ; ambient_channel < NUM_AMBIENTS;ambient_channel++)
 683                 channels[ambient_channel].sfx = NULL;
 684
 685         if (!snd_ambient || !cl.worldmodel || ambient_level.value <= 0)
 686                 return;
 687
 688         l = Mod_PointInLeaf (listener_origin, cl.worldmodel);
 689         if (!l)
 690                 return;
 691
 692 // calc ambient sound levels
 693         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 694         {
 695                 chan = &channels[ambient_channel];
 696                 chan->sfx = ambient_sfx[ambient_channel];
 697
 698                 vol = ambient_level.value * l->ambient_sound_level[ambient_channel];
 699                 if (vol < 8)
 700                         vol = 0;
 701
 702         // don't adjust volume too fast
 703                 if (chan->master_vol < vol)
 704                 {
 705                         chan->master_vol += host_realframetime * ambient_fade.value;
 706                         if (chan->master_vol > vol)
 707                                 chan->master_vol = vol;
 708                 }
 709                 else if (chan->master_vol > vol)
 710                 {
 711                         chan->master_vol -= host_realframetime * ambient_fade.value;
 712                         if (chan->master_vol < vol)
 713                                 chan->master_vol = vol;
 714                 }
 715
 716                 chan->leftvol = chan->rightvol = chan->master_vol;
 717         }
 718 }
 719
 720
 721 /*
 722 ============
 723 S_Update
 724
 725 Called once each time through the main loop
 726 ============
 727 */
 728 void S_Update(vec3_t origin, vec3_t forward, vec3_t right, vec3_t up)
 729 {
 730         int                     i, j;
 731         int                     total;
 732         channel_t       *ch;
 733         channel_t       *combine;
 734
 735         if (!sound_started || (snd_blocked > 0))
 736                 return;
 737
 738         VectorCopy(origin, listener_origin);
 739         VectorCopy(forward, listener_forward);
 740         VectorCopy(right, listener_right);
 741         VectorCopy(up, listener_up);
 742
 743 // update general area ambient sound sources
 744         S_UpdateAmbientSounds ();
 745
 746         combine = NULL;
 747
 748 // update spatialization for static and dynamic sounds
 749         ch = channels+NUM_AMBIENTS;
 750         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
 751         {
 752                 if (!ch->sfx)
 753                         continue;
 754                 SND_Spatialize(ch);         // respatialize channel
 755                 if (!ch->leftvol && !ch->rightvol)
 756                         continue;
 757
 758         // try to combine static sounds with a previous channel of the same
 759         // sound effect so we don't mix five torches every frame
 760
 761                 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
 762                 {
 763                 // see if it can just use the last one
 764                         if (combine && combine->sfx == ch->sfx)
 765                         {
 766                                 combine->leftvol += ch->leftvol;
 767                                 combine->rightvol += ch->rightvol;
 768                                 ch->leftvol = ch->rightvol = 0;
 769                                 continue;
 770                         }
 771                 // search for one
 772                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
 773                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
 774                                 if (combine->sfx == ch->sfx)
 775                                         break;
 776
 777                         if (j == total_channels)
 778                         {
 779                                 combine = NULL;
 780                         }
 781                         else
 782                         {
 783                                 if (combine != ch)
 784                                 {
 785                                         combine->leftvol += ch->leftvol;
 786                                         combine->rightvol += ch->rightvol;
 787                                         ch->leftvol = ch->rightvol = 0;
 788                                 }
 789                                 continue;
 790                         }
 791                 }
 792
 793
 794         }
 795
 796 //
 797 // debugging output
 798 //
 799         if (snd_show.integer)
 800         {
 801                 total = 0;
 802                 ch = channels;
 803                 for (i=0 ; i<total_channels; i++, ch++)
 804                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
 805                         {
 806                                 //Con_Printf ("%3i %3i %s\n", ch->leftvol, ch->rightvol, ch->sfx->name);
 807                                 total++;
 808                         }
 809
 810                 Con_Printf ("----(%i)----\n", total);
 811         }
 812
 813 // mix some sound
 814         S_Update_();
 815 }
 816
 817 void GetSoundtime(void)
 818 {
 819         int             samplepos;
 820         static  int             buffers;
 821         static  int             oldsamplepos;
 822         int             fullsamples;
 823
 824         fullsamples = shm->samples / shm->channels;
 825
 826 // it is possible to miscount buffers if it has wrapped twice between
 827 // calls to S_Update.  Oh well.
 828 #ifdef __sun__
 829         soundtime = SNDDMA_GetSamples();
 830 #else
 831         samplepos = SNDDMA_GetDMAPos();
 832
 833
 834         if (samplepos < oldsamplepos)
 835         {
 836                 buffers++;                                      // buffer wrapped
 837
 838                 if (paintedtime > 0x40000000)
 839                 {       // time to chop things off to avoid 32 bit limits
 840                         buffers = 0;
 841                         paintedtime = fullsamples;
 842                         S_StopAllSounds (true);
 843                 }
 844         }
 845         oldsamplepos = samplepos;
 846
 847         soundtime = buffers*fullsamples + samplepos/shm->channels;
 848 #endif
 849 }
 850
 851 void IN_Accumulate (void);
 852
 853 void S_ExtraUpdate (void)
 854 {
 855
 856 #ifdef _WIN32
 857         IN_Accumulate ();
 858 #endif
 859
 860         if (snd_noextraupdate.integer)
 861                 return;         // don't pollute timings
 862         S_Update_();
 863 }
 864
 865 void S_Update_(void)
 866 {
 867         unsigned        endtime;
 868         int                             samps;
 869
 870         if (!sound_started || (snd_blocked > 0))
 871                 return;
 872
 873 // Updates DMA time
 874         GetSoundtime();
 875
 876 // check to make sure that we haven't overshot
 877         if (paintedtime < soundtime)
 878         {
 879                 //Con_Printf ("S_Update_ : overflow\n");
 880                 paintedtime = soundtime;
 881         }
 882
 883 // mix ahead of current position
 884         endtime = soundtime + _snd_mixahead.value * shm->speed;
 885         samps = shm->samples >> (shm->channels-1);
 886         if (endtime - soundtime > samps)
 887                 endtime = soundtime + samps;
 888
 889 #ifdef _WIN32
 890 // if the buffer was lost or stopped, restore it and/or restart it
 891         {
 892                 DWORD   dwStatus;
 893
 894                 if (pDSBuf)
 895                 {
 896                         if (pDSBuf->lpVtbl->GetStatus (pDSBuf, &dwStatus) != DD_OK)
 897                                 Con_Printf ("Couldn't get sound buffer status\n");
 898
 899                         if (dwStatus & DSBSTATUS_BUFFERLOST)
 900                                 pDSBuf->lpVtbl->Restore (pDSBuf);
 901
 902                         if (!(dwStatus & DSBSTATUS_PLAYING))
 903                                 pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
 904                 }
 905         }
 906 #endif
 907
 908         S_PaintChannels (endtime);
 909
 910         SNDDMA_Submit ();
 911 }
 912
 913 /*
 914 ===============================================================================
 915
 916 console functions
 917
 918 ===============================================================================
 919 */
 920
 921 void S_Play(void)
 922 {
 923         static int hash=345;
 924         int     i;
 925         char name[256];
 926         sfx_t   *sfx;
 927
 928         i = 1;
 929         while (i<Cmd_Argc())
 930         {
 931                 if (!strrchr(Cmd_Argv(i), '.'))
 932                 {
 933                         strcpy(name, Cmd_Argv(i));
 934                         strcat(name, ".wav");
 935                 }
 936                 else
 937                         strcpy(name, Cmd_Argv(i));
 938                 sfx = S_PrecacheSound(name);
 939                 S_StartSound(hash++, 0, sfx, listener_origin, 1.0, 1.0);
 940                 i++;
 941         }
 942 }
 943
 944 void S_Play2(void)
 945 {
 946         static int hash=345;
 947         int     i;
 948         char name[256];
 949         sfx_t   *sfx;
 950
 951         i = 1;
 952         while (i<Cmd_Argc())
 953         {
 954                 if (!strrchr(Cmd_Argv(i), '.'))
 955                 {
 956                         strcpy(name, Cmd_Argv(i));
 957                         strcat(name, ".wav");
 958                 }
 959                 else
 960                         strcpy(name, Cmd_Argv(i));
 961                 sfx = S_PrecacheSound(name);
 962                 S_StartSound(hash++, 0, sfx, listener_origin, 1.0, 0.0);
 963                 i++;
 964         }
 965 }
 966
 967 void S_PlayVol(void)
 968 {
 969         static int hash=543;
 970         int i;
 971         float vol;
 972         char name[256];
 973         sfx_t   *sfx;
 974
 975         i = 1;
 976         while (i<Cmd_Argc())
 977         {
 978                 if (!strrchr(Cmd_Argv(i), '.'))
 979                 {
 980                         strcpy(name, Cmd_Argv(i));
 981                         strcat(name, ".wav");
 982                 }
 983                 else
 984                         strcpy(name, Cmd_Argv(i));
 985                 sfx = S_PrecacheSound(name);
 986                 vol = atof(Cmd_Argv(i+1));
 987                 S_StartSound(hash++, 0, sfx, listener_origin, vol, 1.0);
 988                 i+=2;
 989         }
 990 }
 991
 992 void S_SoundList(void)
 993 {
 994         int             i;
 995         sfx_t   *sfx;
 996         sfxcache_t      *sc;
 997         int             size, total;
 998
 999         total = 0;
1000         for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
1001         {
1002                 sc = sfx->sfxcache;
1003                 if (!sc)
1004                         continue;
1005                 size = sc->length*sc->width*(sc->stereo+1);
1006                 total += size;
1007                 if (sc->loopstart >= 0)
1008                         Con_Printf ("L");
1009                 else
1010                         Con_Printf (" ");
1011                 Con_Printf("(%2db) %6i : %s\n",sc->width*8,  size, sfx->name);
1012         }
1013         Con_Printf ("Total resident: %i\n", total);
1014 }
1015
1016
1017 void S_LocalSound (char *sound)
1018 {
1019         sfx_t   *sfx;
1020
1021         if (nosound.integer)
1022                 return;
1023         if (!sound_started)
1024                 return;
1025
1026         sfx = S_PrecacheSound (sound);
1027         if (!sfx)
1028         {
1029                 Con_Printf ("S_LocalSound: can't precache %s\n", sound);
1030                 return;
1031         }
1032         S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1);
1033 }
1034
1035
1036 void S_ClearPrecache (void)
1037 {
1038 }
1039
1040
1041 void S_BeginPrecaching (void)
1042 {
1043 }
1044
1045
1046 void S_EndPrecaching (void)
1047 {
1048 }
1049