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 cvar_t bgmvolume = {"bgmvolume", "1", true};
  70 cvar_t volume = {"volume", "0.7", true};
  71
  72 cvar_t nosound = {"nosound", "0"};
  73 cvar_t precache = {"precache", "1"};
  74 //cvar_t loadas8bit = {"loadas8bit", "0"};
  75 cvar_t bgmbuffer = {"bgmbuffer", "4096"};
  76 cvar_t ambient_level = {"ambient_level", "0.3"};
  77 cvar_t ambient_fade = {"ambient_fade", "100"};
  78 cvar_t snd_noextraupdate = {"snd_noextraupdate", "0"};
  79 cvar_t snd_show = {"snd_show", "0"};
  80 cvar_t _snd_mixahead = {"_snd_mixahead", "0.1", true};
  81 cvar_t snd_swapstereo = {"snd_swapstereo", "0", true};
  82
  83
  84 // ====================================================================
  85 // User-setable variables
  86 // ====================================================================
  87
  88
  89 //
  90 // Fake dma is a synchronous faking of the DMA progress used for
  91 // isolating performance in the renderer.  The fakedma_updates is
  92 // number of times S_Update() is called per second.
  93 //
  94
  95 qboolean fakedma = false;
  96 int fakedma_updates = 15;
  97
  98
  99 void S_AmbientOff (void)
 100 {
 101         snd_ambient = false;
 102 }
 103
 104
 105 void S_AmbientOn (void)
 106 {
 107         snd_ambient = true;
 108 }
 109
 110
 111 void S_SoundInfo_f(void)
 112 {
 113         if (!sound_started || !shm)
 114         {
 115                 Con_Printf ("sound system not started\n");
 116                 return;
 117         }
 118
 119     Con_Printf("%5d stereo\n", shm->channels - 1);
 120     Con_Printf("%5d samples\n", shm->samples);
 121     Con_Printf("%5d samplepos\n", shm->samplepos);
 122     Con_Printf("%5d samplebits\n", shm->samplebits);
 123     Con_Printf("%5d submission_chunk\n", shm->submission_chunk);
 124     Con_Printf("%5d speed\n", shm->speed);
 125     Con_Printf("0x%x dma buffer\n", shm->buffer);
 126         Con_Printf("%5d total_channels\n", total_channels);
 127 }
 128
 129
 130 /*
 131 ================
 132 S_Startup
 133 ================
 134 */
 135
 136 void S_Startup (void)
 137 {
 138         int             rc;
 139
 140         if (!snd_initialized)
 141                 return;
 142
 143         if (!fakedma)
 144         {
 145                 rc = SNDDMA_Init();
 146
 147                 if (!rc)
 148                 {
 149 #ifndef _WIN32
 150                         Con_Printf("S_Startup: SNDDMA_Init failed.\n");
 151 #endif
 152                         sound_started = 0;
 153                         return;
 154                 }
 155         }
 156
 157         sound_started = 1;
 158 }
 159
 160
 161 void S_Play2(void);
 162
 163 /*
 164 ================
 165 S_Init
 166 ================
 167 */
 168 void S_Init (void)
 169 {
 170
 171         Con_Printf("\nSound Initialization\n");
 172
 173         if (COM_CheckParm("-nosound"))
 174                 return;
 175
 176         if (COM_CheckParm("-simsound"))
 177                 fakedma = true;
 178
 179         Cmd_AddCommand("play", S_Play);
 180         Cmd_AddCommand("play2", S_Play2);
 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(&ambient_level);
 193         Cvar_RegisterVariable(&ambient_fade);
 194         Cvar_RegisterVariable(&snd_noextraupdate);
 195         Cvar_RegisterVariable(&snd_show);
 196         Cvar_RegisterVariable(&_snd_mixahead);
 197         Cvar_RegisterVariable(&snd_swapstereo); // LordHavoc: for people with backwards sound wiring
 198
 199         /*
 200         if (host_parms.memsize < 0x800000)
 201         {
 202                 Cvar_Set ("loadas8bit", "1");
 203                 Con_Printf ("loading all sounds as 8bit\n");
 204         }
 205         */
 206
 207
 208
 209         snd_initialized = true;
 210
 211         S_Startup ();
 212
 213         SND_InitScaletable ();
 214
 215         known_sfx = Hunk_AllocName (MAX_SFX*sizeof(sfx_t), "sfx_t");
 216         num_sfx = 0;
 217
 218 // create a piece of DMA memory
 219
 220         if (fakedma)
 221         {
 222                 shm = (void *) Hunk_AllocName(sizeof(*shm), "shm");
 223                 shm->splitbuffer = 0;
 224                 shm->samplebits = 16;
 225                 shm->speed = 22050;
 226                 shm->channels = 2;
 227                 shm->samples = 32768;
 228                 shm->samplepos = 0;
 229                 shm->soundalive = true;
 230                 shm->gamealive = true;
 231                 shm->submission_chunk = 1;
 232                 shm->buffer = Hunk_AllocName(1<<16, "shmbuf");
 233         }
 234
 235         if (!sound_started)
 236                 return;
 237
 238         Con_Printf ("Sound sampling rate: %i\n", shm->speed);
 239
 240         // provides a tick sound until washed clean
 241
 242 //      if (shm->buffer)
 243 //              shm->buffer[4] = shm->buffer[5] = 0x7f; // force a pop for debugging
 244
 245         ambient_sfx[AMBIENT_WATER] = S_PrecacheSound ("ambience/water1.wav");
 246         ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav");
 247
 248         S_StopAllSounds (true);
 249 }
 250
 251
 252 // =======================================================================
 253 // Shutdown sound engine
 254 // =======================================================================
 255
 256 void S_Shutdown(void)
 257 {
 258
 259         if (!sound_started)
 260                 return;
 261
 262         if (shm)
 263                 shm->gamealive = 0;
 264
 265         shm = 0;
 266         sound_started = 0;
 267
 268         if (!fakedma)
 269         {
 270                 SNDDMA_Shutdown();
 271         }
 272 }
 273
 274
 275 // =======================================================================
 276 // Load a sound
 277 // =======================================================================
 278
 279 /*
 280 ==================
 281 S_FindName
 282
 283 ==================
 284 */
 285 sfx_t *S_FindName (char *name)
 286 {
 287         int             i;
 288         sfx_t   *sfx;
 289
 290         if (!name)
 291                 Host_Error ("S_FindName: NULL\n");
 292
 293         if (strlen(name) >= MAX_QPATH)
 294                 Host_Error ("Sound name too long: %s", name);
 295
 296 // see if already loaded
 297         for (i=0 ; i < num_sfx ; i++)
 298                 if (!strcmp(known_sfx[i].name, name))
 299                 {
 300                         return &known_sfx[i];
 301                 }
 302
 303         if (num_sfx == MAX_SFX)
 304                 Sys_Error ("S_FindName: out of sfx_t");
 305
 306         sfx = &known_sfx[i];
 307         strcpy (sfx->name, name);
 308
 309         num_sfx++;
 310
 311         return sfx;
 312 }
 313
 314
 315 /*
 316 ==================
 317 S_TouchSound
 318
 319 ==================
 320 */
 321 void S_TouchSound (char *name)
 322 {
 323         sfx_t   *sfx;
 324
 325         if (!sound_started)
 326                 return;
 327
 328         sfx = S_FindName (name);
 329         Cache_Check (&sfx->cache);
 330 }
 331
 332 /*
 333 ==================
 334 S_PrecacheSound
 335
 336 ==================
 337 */
 338 sfx_t *S_PrecacheSound (char *name)
 339 {
 340         sfx_t   *sfx;
 341
 342         if (!sound_started || nosound.value)
 343                 return NULL;
 344
 345         sfx = S_FindName (name);
 346
 347 // cache it in
 348         if (precache.value)
 349                 S_LoadSound (sfx);
 350
 351         return sfx;
 352 }
 353
 354
 355 //=============================================================================
 356
 357 /*
 358 =================
 359 SND_PickChannel
 360 =================
 361 */
 362 channel_t *SND_PickChannel(int entnum, int entchannel)
 363 {
 364     int ch_idx;
 365     int first_to_die;
 366     int life_left;
 367
 368 // Check for replacement sound, or find the best one to replace
 369     first_to_die = -1;
 370     life_left = 0x7fffffff;
 371     for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
 372     {
 373                 if (entchannel != 0             // channel 0 never overrides
 374                 && channels[ch_idx].entnum == entnum
 375                 && (channels[ch_idx].entchannel == entchannel || entchannel == -1) )
 376                 {       // always override sound from same entity
 377                         first_to_die = ch_idx;
 378                         break;
 379                 }
 380
 381                 // don't let monster sounds override player sounds
 382                 if (channels[ch_idx].entnum == cl.viewentity && entnum != cl.viewentity && channels[ch_idx].sfx)
 383                         continue;
 384
 385                 if (channels[ch_idx].end - paintedtime < life_left)
 386                 {
 387                         life_left = channels[ch_idx].end - paintedtime;
 388                         first_to_die = ch_idx;
 389                 }
 390    }
 391
 392         if (first_to_die == -1)
 393                 return NULL;
 394
 395         if (channels[first_to_die].sfx)
 396                 channels[first_to_die].sfx = NULL;
 397
 398     return &channels[first_to_die];
 399 }
 400
 401 /*
 402 =================
 403 SND_Spatialize
 404 =================
 405 */
 406 void SND_Spatialize(channel_t *ch)
 407 {
 408     vec_t dot;
 409     vec_t dist;
 410     vec_t lscale, rscale, scale;
 411     vec3_t source_vec;
 412         sfx_t *snd;
 413
 414 // anything coming from the view entity will always be full volume
 415 // LordHavoc: make sounds with ATTN_NONE have no spatialization
 416         if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
 417         {
 418                 ch->leftvol = ch->master_vol;
 419                 ch->rightvol = ch->master_vol;
 420                 return;
 421         }
 422
 423 // calculate stereo seperation and distance attenuation
 424
 425         snd = ch->sfx;
 426         VectorSubtract(ch->origin, listener_origin, source_vec);
 427
 428         dist = VectorNormalizeLength(source_vec) * ch->dist_mult;
 429
 430         dot = DotProduct(listener_right, source_vec);
 431
 432         if (shm->channels == 1)
 433         {
 434                 rscale = 1.0;
 435                 lscale = 1.0;
 436         }
 437         else
 438         {
 439                 rscale = 1.0 + dot;
 440                 lscale = 1.0 - dot;
 441         }
 442
 443 // add in distance effect
 444         scale = (1.0 - dist) * rscale;
 445         ch->rightvol = (int) (ch->master_vol * scale);
 446         if (ch->rightvol < 0)
 447                 ch->rightvol = 0;
 448
 449         scale = (1.0 - dist) * lscale;
 450         ch->leftvol = (int) (ch->master_vol * scale);
 451         if (ch->leftvol < 0)
 452                 ch->leftvol = 0;
 453 }
 454
 455
 456 // =======================================================================
 457 // Start a sound effect
 458 // =======================================================================
 459
 460 void S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 461 {
 462         channel_t *target_chan, *check;
 463         sfxcache_t      *sc;
 464         int             vol;
 465         int             ch_idx;
 466         int             skip;
 467
 468         if (!sound_started)
 469                 return;
 470
 471         if (!sfx)
 472                 return;
 473
 474         if (nosound.value)
 475                 return;
 476
 477         vol = fvol*255;
 478
 479 // pick a channel to play on
 480         target_chan = SND_PickChannel(entnum, entchannel);
 481         if (!target_chan)
 482                 return;
 483
 484 // spatialize
 485         memset (target_chan, 0, sizeof(*target_chan));
 486         VectorCopy(origin, target_chan->origin);
 487         target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
 488         target_chan->master_vol = vol;
 489         target_chan->entnum = entnum;
 490         target_chan->entchannel = entchannel;
 491         SND_Spatialize(target_chan);
 492
 493         if (!target_chan->leftvol && !target_chan->rightvol)
 494                 return;         // not audible at all
 495
 496 // new channel
 497         sc = S_LoadSound (sfx);
 498         if (!sc)
 499         {
 500                 target_chan->sfx = NULL;
 501                 return;         // couldn't load the sound's data
 502         }
 503
 504         target_chan->sfx = sfx;
 505         target_chan->pos = 0.0;
 506     target_chan->end = paintedtime + sc->length;
 507
 508 // if an identical sound has also been started this frame, offset the pos
 509 // a bit to keep it from just making the first one louder
 510         check = &channels[NUM_AMBIENTS];
 511     for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
 512     {
 513                 if (check == target_chan)
 514                         continue;
 515                 if (check->sfx == sfx && !check->pos)
 516                 {
 517                         // LordHavoc: fixed skip calculations
 518                         skip = 0.1 * shm->speed;
 519                         if (skip > sc->length)
 520                                 skip = sc->length;
 521                         if (skip > 0)
 522                                 skip = rand() % skip;
 523                         target_chan->pos += skip;
 524                         target_chan->end -= skip;
 525                         break;
 526                 }
 527
 528         }
 529 }
 530
 531 void S_StopSound(int entnum, int entchannel)
 532 {
 533         int i;
 534
 535         for (i=0 ; i<MAX_DYNAMIC_CHANNELS ; i++)
 536         {
 537                 if (channels[i].entnum == entnum
 538                         && channels[i].entchannel == entchannel)
 539                 {
 540                         channels[i].end = 0;
 541                         channels[i].sfx = NULL;
 542                         return;
 543                 }
 544         }
 545 }
 546
 547 void S_StopAllSounds(qboolean clear)
 548 {
 549         int             i;
 550
 551         if (!sound_started)
 552                 return;
 553
 554         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 555
 556         for (i=0 ; i<MAX_CHANNELS ; i++)
 557                 if (channels[i].sfx)
 558                         channels[i].sfx = NULL;
 559
 560         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 561
 562         if (clear)
 563                 S_ClearBuffer ();
 564 }
 565
 566 void S_StopAllSoundsC (void)
 567 {
 568         S_StopAllSounds (true);
 569 }
 570
 571 void S_ClearBuffer (void)
 572 {
 573         int             clear;
 574
 575 #ifdef _WIN32
 576         if (!sound_started || !shm || (!shm->buffer && !pDSBuf))
 577 #else
 578         if (!sound_started || !shm || !shm->buffer)
 579 #endif
 580                 return;
 581
 582         if (shm->samplebits == 8)
 583                 clear = 0x80;
 584         else
 585                 clear = 0;
 586
 587 #ifdef _WIN32
 588         if (pDSBuf)
 589         {
 590                 DWORD   dwSize;
 591                 DWORD   *pData;
 592                 int             reps;
 593                 HRESULT hresult;
 594
 595                 reps = 0;
 596
 597                 while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, &pData, &dwSize, NULL, NULL, 0)) != DS_OK)
 598                 {
 599                         if (hresult != DSERR_BUFFERLOST)
 600                         {
 601                                 Con_Printf ("S_ClearBuffer: DS::Lock Sound Buffer Failed\n");
 602                                 S_Shutdown ();
 603                                 return;
 604                         }
 605
 606                         if (++reps > 10000)
 607                         {
 608                                 Con_Printf ("S_ClearBuffer: DS: couldn't restore buffer\n");
 609                                 S_Shutdown ();
 610                                 return;
 611                         }
 612                 }
 613
 614                 memset(pData, clear, shm->samples * shm->samplebits/8);
 615
 616                 pDSBuf->lpVtbl->Unlock(pDSBuf, pData, dwSize, NULL, 0);
 617
 618         }
 619         else
 620 #endif
 621         {
 622                 memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
 623         }
 624 }
 625
 626
 627 /*
 628 =================
 629 S_StaticSound
 630 =================
 631 */
 632 void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
 633 {
 634         channel_t       *ss;
 635         sfxcache_t              *sc;
 636
 637         if (!sfx)
 638                 return;
 639
 640         if (total_channels == MAX_CHANNELS)
 641         {
 642                 Con_Printf ("total_channels == MAX_CHANNELS\n");
 643                 return;
 644         }
 645
 646         ss = &channels[total_channels];
 647         total_channels++;
 648
 649         sc = S_LoadSound (sfx);
 650         if (!sc)
 651                 return;
 652
 653         if (sc->loopstart == -1)
 654         {
 655                 Con_Printf ("Sound %s not looped\n", sfx->name);
 656                 return;
 657         }
 658
 659         ss->sfx = sfx;
 660         VectorCopy (origin, ss->origin);
 661         ss->master_vol = vol;
 662         ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
 663     ss->end = paintedtime + sc->length;
 664
 665         SND_Spatialize (ss);
 666 }
 667
 668
 669 //=============================================================================
 670
 671 /*
 672 ===================
 673 S_UpdateAmbientSounds
 674 ===================
 675 */
 676 void S_UpdateAmbientSounds (void)
 677 {
 678         mleaf_t         *l;
 679         float           vol;
 680         int                     ambient_channel;
 681         channel_t       *chan;
 682
 683         // LordHavoc: kill ambient sounds until proven otherwise
 684         for (ambient_channel = 0 ; ambient_channel < NUM_AMBIENTS;ambient_channel++)
 685                 channels[ambient_channel].sfx = NULL;
 686
 687         if (!snd_ambient || !cl.worldmodel || ambient_level.value <= 0)
 688                 return;
 689
 690         l = Mod_PointInLeaf (listener_origin, cl.worldmodel);
 691         if (!l)
 692                 return;
 693
 694 // calc ambient sound levels
 695         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 696         {
 697                 chan = &channels[ambient_channel];
 698                 chan->sfx = ambient_sfx[ambient_channel];
 699
 700                 vol = ambient_level.value * l->ambient_sound_level[ambient_channel];
 701                 if (vol < 8)
 702                         vol = 0;
 703
 704         // don't adjust volume too fast
 705                 if (chan->master_vol < vol)
 706                 {
 707                         chan->master_vol += host_realframetime * ambient_fade.value;
 708                         if (chan->master_vol > vol)
 709                                 chan->master_vol = vol;
 710                 }
 711                 else if (chan->master_vol > vol)
 712                 {
 713                         chan->master_vol -= host_realframetime * ambient_fade.value;
 714                         if (chan->master_vol < vol)
 715                                 chan->master_vol = vol;
 716                 }
 717
 718                 chan->leftvol = chan->rightvol = chan->master_vol;
 719         }
 720 }
 721
 722
 723 /*
 724 ============
 725 S_Update
 726
 727 Called once each time through the main loop
 728 ============
 729 */
 730 void S_Update(vec3_t origin, vec3_t forward, vec3_t right, vec3_t up)
 731 {
 732         int                     i, j;
 733         int                     total;
 734         channel_t       *ch;
 735         channel_t       *combine;
 736
 737         if (!sound_started || (snd_blocked > 0))
 738                 return;
 739
 740         VectorCopy(origin, listener_origin);
 741         VectorCopy(forward, listener_forward);
 742         VectorCopy(right, listener_right);
 743         VectorCopy(up, listener_up);
 744
 745 // update general area ambient sound sources
 746         S_UpdateAmbientSounds ();
 747
 748         combine = NULL;
 749
 750 // update spatialization for static and dynamic sounds
 751         ch = channels+NUM_AMBIENTS;
 752         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
 753         {
 754                 if (!ch->sfx)
 755                         continue;
 756                 SND_Spatialize(ch);         // respatialize channel
 757                 if (!ch->leftvol && !ch->rightvol)
 758                         continue;
 759
 760         // try to combine static sounds with a previous channel of the same
 761         // sound effect so we don't mix five torches every frame
 762
 763                 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
 764                 {
 765                 // see if it can just use the last one
 766                         if (combine && combine->sfx == ch->sfx)
 767                         {
 768                                 combine->leftvol += ch->leftvol;
 769                                 combine->rightvol += ch->rightvol;
 770                                 ch->leftvol = ch->rightvol = 0;
 771                                 continue;
 772                         }
 773                 // search for one
 774                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
 775                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
 776                                 if (combine->sfx == ch->sfx)
 777                                         break;
 778
 779                         if (j == total_channels)
 780                         {
 781                                 combine = NULL;
 782                         }
 783                         else
 784                         {
 785                                 if (combine != ch)
 786                                 {
 787                                         combine->leftvol += ch->leftvol;
 788                                         combine->rightvol += ch->rightvol;
 789                                         ch->leftvol = ch->rightvol = 0;
 790                                 }
 791                                 continue;
 792                         }
 793                 }
 794
 795
 796         }
 797
 798 //
 799 // debugging output
 800 //
 801         if (snd_show.value)
 802         {
 803                 total = 0;
 804                 ch = channels;
 805                 for (i=0 ; i<total_channels; i++, ch++)
 806                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
 807                         {
 808                                 //Con_Printf ("%3i %3i %s\n", ch->leftvol, ch->rightvol, ch->sfx->name);
 809                                 total++;
 810                         }
 811
 812                 Con_Printf ("----(%i)----\n", total);
 813         }
 814
 815 // mix some sound
 816         S_Update_();
 817 }
 818
 819 void GetSoundtime(void)
 820 {
 821         int             samplepos;
 822         static  int             buffers;
 823         static  int             oldsamplepos;
 824         int             fullsamples;
 825
 826         fullsamples = shm->samples / shm->channels;
 827
 828 // it is possible to miscount buffers if it has wrapped twice between
 829 // calls to S_Update.  Oh well.
 830 #ifdef __sun__
 831         soundtime = SNDDMA_GetSamples();
 832 #else
 833         samplepos = SNDDMA_GetDMAPos();
 834
 835
 836         if (samplepos < oldsamplepos)
 837         {
 838                 buffers++;                                      // buffer wrapped
 839
 840                 if (paintedtime > 0x40000000)
 841                 {       // time to chop things off to avoid 32 bit limits
 842                         buffers = 0;
 843                         paintedtime = fullsamples;
 844                         S_StopAllSounds (true);
 845                 }
 846         }
 847         oldsamplepos = samplepos;
 848
 849         soundtime = buffers*fullsamples + samplepos/shm->channels;
 850 #endif
 851 }
 852
 853 void IN_Accumulate (void);
 854
 855 void S_ExtraUpdate (void)
 856 {
 857
 858 #ifdef _WIN32
 859         IN_Accumulate ();
 860 #endif
 861
 862         if (snd_noextraupdate.value)
 863                 return;         // don't pollute timings
 864         S_Update_();
 865 }
 866
 867 void S_Update_(void)
 868 {
 869         unsigned        endtime;
 870         int                             samps;
 871
 872         if (!sound_started || (snd_blocked > 0))
 873                 return;
 874
 875 // Updates DMA time
 876         GetSoundtime();
 877
 878 // check to make sure that we haven't overshot
 879         if (paintedtime < soundtime)
 880         {
 881                 //Con_Printf ("S_Update_ : overflow\n");
 882                 paintedtime = soundtime;
 883         }
 884
 885 // mix ahead of current position
 886         endtime = soundtime + _snd_mixahead.value * shm->speed;
 887         samps = shm->samples >> (shm->channels-1);
 888         if (endtime - soundtime > samps)
 889                 endtime = soundtime + samps;
 890
 891 #ifdef _WIN32
 892 // if the buffer was lost or stopped, restore it and/or restart it
 893         {
 894                 DWORD   dwStatus;
 895
 896                 if (pDSBuf)
 897                 {
 898                         if (pDSBuf->lpVtbl->GetStatus (pDSBuf, &dwStatus) != DD_OK)
 899                                 Con_Printf ("Couldn't get sound buffer status\n");
 900
 901                         if (dwStatus & DSBSTATUS_BUFFERLOST)
 902                                 pDSBuf->lpVtbl->Restore (pDSBuf);
 903
 904                         if (!(dwStatus & DSBSTATUS_PLAYING))
 905                                 pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
 906                 }
 907         }
 908 #endif
 909
 910         S_PaintChannels (endtime);
 911
 912         SNDDMA_Submit ();
 913 }
 914
 915 /*
 916 ===============================================================================
 917
 918 console functions
 919
 920 ===============================================================================
 921 */
 922
 923 void S_Play(void)
 924 {
 925         static int hash=345;
 926         int     i;
 927         char name[256];
 928         sfx_t   *sfx;
 929
 930         i = 1;
 931         while (i<Cmd_Argc())
 932         {
 933                 if (!strrchr(Cmd_Argv(i), '.'))
 934                 {
 935                         strcpy(name, Cmd_Argv(i));
 936                         strcat(name, ".wav");
 937                 }
 938                 else
 939                         strcpy(name, Cmd_Argv(i));
 940                 sfx = S_PrecacheSound(name);
 941                 S_StartSound(hash++, 0, sfx, listener_origin, 1.0, 1.0);
 942                 i++;
 943         }
 944 }
 945
 946 void S_Play2(void)
 947 {
 948         static int hash=345;
 949         int     i;
 950         char name[256];
 951         sfx_t   *sfx;
 952
 953         i = 1;
 954         while (i<Cmd_Argc())
 955         {
 956                 if (!strrchr(Cmd_Argv(i), '.'))
 957                 {
 958                         strcpy(name, Cmd_Argv(i));
 959                         strcat(name, ".wav");
 960                 }
 961                 else
 962                         strcpy(name, Cmd_Argv(i));
 963                 sfx = S_PrecacheSound(name);
 964                 S_StartSound(hash++, 0, sfx, listener_origin, 1.0, 0.0);
 965                 i++;
 966         }
 967 }
 968
 969 void S_PlayVol(void)
 970 {
 971         static int hash=543;
 972         int i;
 973         float vol;
 974         char name[256];
 975         sfx_t   *sfx;
 976
 977         i = 1;
 978         while (i<Cmd_Argc())
 979         {
 980                 if (!strrchr(Cmd_Argv(i), '.'))
 981                 {
 982                         strcpy(name, Cmd_Argv(i));
 983                         strcat(name, ".wav");
 984                 }
 985                 else
 986                         strcpy(name, Cmd_Argv(i));
 987                 sfx = S_PrecacheSound(name);
 988                 vol = atof(Cmd_Argv(i+1));
 989                 S_StartSound(hash++, 0, sfx, listener_origin, vol, 1.0);
 990                 i+=2;
 991         }
 992 }
 993
 994 void S_SoundList(void)
 995 {
 996         int             i;
 997         sfx_t   *sfx;
 998         sfxcache_t      *sc;
 999         int             size, total;
1000
1001         total = 0;
1002         for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
1003         {
1004                 sc = Cache_Check (&sfx->cache);
1005                 if (!sc)
1006                         continue;
1007                 size = sc->length*sc->width*(sc->stereo+1);
1008                 total += size;
1009                 if (sc->loopstart >= 0)
1010                         Con_Printf ("L");
1011                 else
1012                         Con_Printf (" ");
1013                 Con_Printf("(%2db) %6i : %s\n",sc->width*8,  size, sfx->name);
1014         }
1015         Con_Printf ("Total resident: %i\n", total);
1016 }
1017
1018
1019 void S_LocalSound (char *sound)
1020 {
1021         sfx_t   *sfx;
1022
1023         if (nosound.value)
1024                 return;
1025         if (!sound_started)
1026                 return;
1027
1028         sfx = S_PrecacheSound (sound);
1029         if (!sfx)
1030         {
1031                 Con_Printf ("S_LocalSound: can't cache %s\n", sound);
1032                 return;
1033         }
1034         S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1);
1035 }
1036
1037
1038 void S_ClearPrecache (void)
1039 {
1040 }
1041
1042
1043 void S_BeginPrecaching (void)
1044 {
1045 }
1046
1047
1048 void S_EndPrecaching (void)
1049 {
1050 }
1051