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 <windows.h>
  26 #include <dsound.h>
  27 extern DWORD gSndBufSize;
  28 extern LPDIRECTSOUND pDS;
  29 extern LPDIRECTSOUNDBUFFER pDSBuf;
  30 #endif
  31
  32 #include "snd_ogg.h"
  33
  34
  35 void S_Play(void);
  36 void S_PlayVol(void);
  37 void S_Play2(void);
  38 void S_SoundList(void);
  39 void S_Update_();
  40 void S_StopAllSounds(qboolean clear);
  41 void S_StopAllSoundsC(void);
  42
  43 // =======================================================================
  44 // Internal sound data & structures
  45 // =======================================================================
  46
  47 channel_t channels[MAX_CHANNELS];
  48 unsigned int total_channels;
  49
  50 int snd_blocked = 0;
  51 static qboolean snd_ambient = 1;
  52 cvar_t snd_initialized = { CVAR_READONLY, "snd_initialized", "0"};
  53 cvar_t snd_streaming = { CVAR_SAVE, "snd_streaming", "1"};
  54
  55 // pointer should go away
  56 volatile dma_t *shm = 0;
  57 volatile dma_t sn;
  58
  59 vec3_t listener_vieworigin;
  60 vec3_t listener_viewforward;
  61 vec3_t listener_viewleft;
  62 vec3_t listener_viewup;
  63 vec_t sound_nominal_clip_dist=1000.0;
  64 mempool_t *snd_mempool;
  65
  66 // sample PAIRS
  67 int soundtime;
  68 int paintedtime;
  69
  70
  71 //LordHavoc: increased the client sound limit from 512 to 4096 for the Nehahra movie
  72 #define MAX_SFX 4096
  73 sfx_t *known_sfx; // allocated [MAX_SFX]
  74 int num_sfx;
  75
  76 sfx_t *ambient_sfx[NUM_AMBIENTS];
  77
  78 int sound_started = 0;
  79
  80 cvar_t bgmvolume = {CVAR_SAVE, "bgmvolume", "1"};
  81 cvar_t volume = {CVAR_SAVE, "volume", "0.7"};
  82 cvar_t snd_staticvolume = {CVAR_SAVE, "snd_staticvolume", "1"};
  83
  84 cvar_t nosound = {0, "nosound", "0"};
  85 cvar_t snd_precache = {0, "snd_precache", "1"};
  86 cvar_t bgmbuffer = {0, "bgmbuffer", "4096"};
  87 cvar_t ambient_level = {0, "ambient_level", "0.3"};
  88 cvar_t ambient_fade = {0, "ambient_fade", "100"};
  89 cvar_t snd_noextraupdate = {0, "snd_noextraupdate", "0"};
  90 cvar_t snd_show = {0, "snd_show", "0"};
  91 cvar_t _snd_mixahead = {CVAR_SAVE, "_snd_mixahead", "0.1"};
  92 cvar_t snd_swapstereo = {CVAR_SAVE, "snd_swapstereo", "0"};
  93
  94
  95 // ====================================================================
  96 // User-setable variables
  97 // ====================================================================
  98
  99
 100 //
 101 // Fake dma is a synchronous faking of the DMA progress used for
 102 // isolating performance in the renderer.  The fakedma_updates is
 103 // number of times S_Update() is called per second.
 104 //
 105
 106 qboolean fakedma = false;
 107 int fakedma_updates = 15;
 108
 109
 110 void S_AmbientOff (void)
 111 {
 112         snd_ambient = false;
 113 }
 114
 115
 116 void S_AmbientOn (void)
 117 {
 118         snd_ambient = true;
 119 }
 120
 121
 122 void S_SoundInfo_f(void)
 123 {
 124         if (!sound_started || !shm)
 125         {
 126                 Con_Print("sound system not started\n");
 127                 return;
 128         }
 129
 130         Con_Printf("%5d stereo\n", shm->format.channels - 1);
 131         Con_Printf("%5d samples\n", shm->samples);
 132         Con_Printf("%5d samplepos\n", shm->samplepos);
 133         Con_Printf("%5d samplebits\n", shm->format.width * 8);
 134         Con_Printf("%5d speed\n", shm->format.speed);
 135         Con_Printf("0x%x dma buffer\n", shm->buffer);
 136         Con_Printf("%5u total_channels\n", total_channels);
 137 }
 138
 139 void S_UnloadSounds(void)
 140 {
 141         int i;
 142         for (i = 0;i < num_sfx;i++)
 143                 S_UnloadSound(known_sfx + i);
 144 }
 145
 146 void S_LoadSounds(void)
 147 {
 148         int i;
 149         for (i = 0;i < num_sfx;i++)
 150                 S_LoadSound(known_sfx + i, false);
 151 }
 152
 153 void S_Startup(void)
 154 {
 155         if (!snd_initialized.integer)
 156                 return;
 157
 158         shm = &sn;
 159         memset((void *)shm, 0, sizeof(*shm));
 160
 161 // create a piece of DMA memory
 162
 163         if (fakedma)
 164         {
 165                 shm->format.width = 2;
 166                 shm->format.speed = 22050;
 167                 shm->format.channels = 2;
 168                 shm->samples = 32768;
 169                 shm->samplepos = 0;
 170                 shm->buffer = Mem_Alloc(snd_mempool, shm->format.channels * shm->samples * shm->format.width);
 171         }
 172         else
 173         {
 174                 if (!SNDDMA_Init())
 175                 {
 176                         Con_Print("S_Startup: SNDDMA_Init failed.\n");
 177                         sound_started = 0;
 178                         shm = NULL;
 179                         return;
 180                 }
 181         }
 182
 183         sound_started = 1;
 184
 185         Con_DPrintf("Sound sampling rate: %i\n", shm->format.speed);
 186
 187         //S_LoadSounds();
 188
 189         S_StopAllSounds(true);
 190 }
 191
 192 void S_Shutdown(void)
 193 {
 194         if (!sound_started)
 195                 return;
 196
 197         //S_UnloadSounds();
 198
 199         if (fakedma)
 200                 Mem_Free(shm->buffer);
 201         else
 202                 SNDDMA_Shutdown();
 203
 204         shm = NULL;
 205         sound_started = 0;
 206 }
 207
 208 void S_Restart_f(void)
 209 {
 210         S_Shutdown();
 211         S_Startup();
 212 }
 213
 214 /*
 215 ================
 216 S_Init
 217 ================
 218 */
 219 void S_Init(void)
 220 {
 221         Con_DPrint("\nSound Initialization\n");
 222
 223         S_RawSamples_ClearQueue();
 224
 225         Cvar_RegisterVariable(&volume);
 226         Cvar_RegisterVariable(&bgmvolume);
 227         Cvar_RegisterVariable(&snd_staticvolume);
 228
 229         if (COM_CheckParm("-nosound") || COM_CheckParm("-safe"))
 230                 return;
 231
 232         snd_mempool = Mem_AllocPool("sound");
 233
 234         if (COM_CheckParm("-simsound"))
 235                 fakedma = true;
 236
 237         Cmd_AddCommand("play", S_Play);
 238         Cmd_AddCommand("play2", S_Play2);
 239         Cmd_AddCommand("playvol", S_PlayVol);
 240         Cmd_AddCommand("stopsound", S_StopAllSoundsC);
 241         Cmd_AddCommand("soundlist", S_SoundList);
 242         Cmd_AddCommand("soundinfo", S_SoundInfo_f);
 243         Cmd_AddCommand("snd_restart", S_Restart_f);
 244
 245         Cvar_RegisterVariable(&nosound);
 246         Cvar_RegisterVariable(&snd_precache);
 247         Cvar_RegisterVariable(&snd_initialized);
 248         Cvar_RegisterVariable(&snd_streaming);
 249         Cvar_RegisterVariable(&bgmbuffer);
 250         Cvar_RegisterVariable(&ambient_level);
 251         Cvar_RegisterVariable(&ambient_fade);
 252         Cvar_RegisterVariable(&snd_noextraupdate);
 253         Cvar_RegisterVariable(&snd_show);
 254         Cvar_RegisterVariable(&_snd_mixahead);
 255         Cvar_RegisterVariable(&snd_swapstereo); // LordHavoc: for people with backwards sound wiring
 256
 257         Cvar_SetValueQuick(&snd_initialized, true);
 258
 259         known_sfx = Mem_Alloc(snd_mempool, MAX_SFX*sizeof(sfx_t));
 260         num_sfx = 0;
 261
 262         SND_InitScaletable ();
 263
 264         ambient_sfx[AMBIENT_WATER] = S_PrecacheSound ("ambience/water1.wav", false);
 265         ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav", false);
 266
 267         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 268         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 269
 270         OGG_OpenLibrary ();
 271 }
 272
 273
 274 // =======================================================================
 275 // Load a sound
 276 // =======================================================================
 277
 278 /*
 279 =========
 280 S_GetCached
 281
 282 =========
 283 */
 284 sfx_t *S_GetCached (const char *name)
 285 {
 286         int i;
 287
 288         if (!snd_initialized.integer)
 289                 return NULL;
 290
 291         if (!name)
 292                 Host_Error("S_IsCached: NULL\n");
 293
 294         if (strlen(name) >= MAX_QPATH)
 295                 Host_Error("Sound name too long: %s", name);
 296
 297         for(i = 0;i < num_sfx;i++)
 298                 if(!strcmp(known_sfx[i].name, name))
 299                         return &known_sfx[i];
 300
 301         return NULL;
 302 }
 303
 304 /*
 305 ==================
 306 S_FindName
 307
 308 ==================
 309 */
 310 sfx_t *S_FindName (char *name)
 311 {
 312         int i;
 313         sfx_t *sfx;
 314
 315         if (!snd_initialized.integer)
 316                 return NULL;
 317
 318         if (!name)
 319                 Host_Error("S_FindName: NULL\n");
 320
 321         if (strlen(name) >= MAX_QPATH)
 322                 Host_Error("Sound name too long: %s", name);
 323
 324 // see if already loaded
 325         for (i = 0;i < num_sfx;i++)
 326                 if (!strcmp(known_sfx[i].name, name))
 327                         return &known_sfx[i];
 328
 329         if (num_sfx == MAX_SFX)
 330                 Sys_Error("S_FindName: out of sfx_t");
 331
 332         sfx = &known_sfx[num_sfx++];
 333         memset(sfx, 0, sizeof(*sfx));
 334         strlcpy (sfx->name, name, sizeof (sfx->name));
 335         return sfx;
 336 }
 337
 338
 339 /*
 340 ==================
 341 S_TouchSound
 342
 343 ==================
 344 */
 345 void S_TouchSound (char *name)
 346 {
 347         sfx_t *sfx;
 348
 349         sfx = S_FindName (name);
 350
 351         // Set the "used" flag for this sound
 352         if (sfx != NULL)
 353                 sfx->flags |= SFXFLAG_USED;
 354 }
 355
 356
 357 /*
 358 ==================
 359 S_ClearUsed
 360
 361 Reset the "used" flag of all precached sounds
 362 ==================
 363 */
 364 void S_ClearUsed (void)
 365 {
 366         int i;
 367
 368         for (i = 0; i < num_sfx; i++)
 369                 known_sfx[i].flags &= ~SFXFLAG_USED;
 370 }
 371
 372
 373 /*
 374 ==================
 375 S_PurgeUnused
 376
 377 Free all precached sounds without the "used" flag
 378 ==================
 379 */
 380 void S_PurgeUnused (void)
 381 {
 382         int i;
 383         sfx_t *sfx;
 384
 385         for (i = 0; i < num_sfx; i++)
 386         {
 387                 sfx = &known_sfx[i];
 388                 if (! (sfx->flags & SFXFLAG_USED))
 389                         S_UnloadSound (sfx);
 390         }
 391 }
 392
 393
 394 /*
 395 ==================
 396 S_PrecacheSound
 397
 398 ==================
 399 */
 400 sfx_t *S_PrecacheSound (char *name, int complain)
 401 {
 402         sfx_t *sfx;
 403
 404         if (!snd_initialized.integer)
 405                 return NULL;
 406
 407         sfx = S_FindName(name);
 408
 409         if (!nosound.integer && snd_precache.integer)
 410                 S_LoadSound(sfx, complain);
 411
 412         return sfx;
 413 }
 414
 415
 416 //=============================================================================
 417
 418 /*
 419 =================
 420 SND_PickChannel
 421
 422 Picks a channel based on priorities, empty slots, number of channels
 423 =================
 424 */
 425 channel_t *SND_PickChannel(int entnum, int entchannel)
 426 {
 427         int ch_idx;
 428         int first_to_die;
 429         int life_left;
 430         channel_t* ch;
 431
 432 // Check for replacement sound, or find the best one to replace
 433         first_to_die = -1;
 434         life_left = 0x7fffffff;
 435         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
 436         {
 437                 ch = &channels[ch_idx];
 438                 if (entchannel != 0             // channel 0 never overrides
 439                 && ch->entnum == entnum
 440                 && (ch->entchannel == entchannel || entchannel == -1) )
 441                 {       // always override sound from same entity
 442                         first_to_die = ch_idx;
 443                         break;
 444                 }
 445
 446                 // don't let monster sounds override player sounds
 447                 if (ch->entnum == cl.viewentity && entnum != cl.viewentity && ch->sfx)
 448                         continue;
 449
 450                 // don't override looped sounds
 451                 if ((ch->flags & CHANNELFLAG_FORCELOOP) != 0 ||
 452                         (ch->sfx != NULL && ch->sfx->loopstart >= 0))
 453                         continue;
 454
 455                 if (ch->end - paintedtime < life_left)
 456                 {
 457                         life_left = ch->end - paintedtime;
 458                         first_to_die = ch_idx;
 459                 }
 460         }
 461
 462         if (first_to_die == -1)
 463                 return NULL;
 464
 465         if (channels[first_to_die].sfx)
 466                 channels[first_to_die].sfx = NULL;
 467
 468         return &channels[first_to_die];
 469 }
 470
 471 /*
 472 =================
 473 SND_Spatialize
 474
 475 Spatializes a channel
 476 =================
 477 */
 478 void SND_Spatialize(channel_t *ch, int isstatic)
 479 {
 480         vec_t dist, scale, pan;
 481         vec3_t source_vec;
 482
 483         // anything coming from the view entity will always be full volume
 484         // LordHavoc: make sounds with ATTN_NONE have no spatialization
 485         if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
 486         {
 487                 ch->leftvol = ch->master_vol;
 488                 ch->rightvol = ch->master_vol;
 489         }
 490         else
 491         {
 492                 // update sound origin if we know about the entity
 493                 if (ch->entnum > 0 && cls.state == ca_connected && cl_entities[ch->entnum].state_current.active)
 494                 {
 495                         //Con_Printf("-- entnum %i origin %f %f %f neworigin %f %f %f\n", ch->entnum, ch->origin[0], ch->origin[1], ch->origin[2], cl_entities[ch->entnum].state_current.origin[0], cl_entities[ch->entnum].state_current.origin[1], cl_entities[ch->entnum].state_current.origin[2]);
 496                         VectorCopy(cl_entities[ch->entnum].state_current.origin, ch->origin);
 497                         if (cl_entities[ch->entnum].state_current.modelindex && cl.model_precache[cl_entities[ch->entnum].state_current.modelindex]->soundfromcenter)
 498                                 VectorMAMAM(1.0f, ch->origin, 0.5f, cl.model_precache[cl_entities[ch->entnum].state_current.modelindex]->normalmins, 0.5f, cl.model_precache[cl_entities[ch->entnum].state_current.modelindex]->normalmaxs, ch->origin);
 499                 }
 500
 501                 // calculate stereo seperation and distance attenuation
 502                 VectorSubtract(ch->origin, listener_vieworigin, source_vec);
 503                 dist = VectorNormalizeLength(source_vec);
 504                 // distance
 505                 scale = ch->master_vol * (1.0 - (dist * ch->dist_mult));
 506                 // panning
 507                 pan = scale * DotProduct(listener_viewleft, source_vec);
 508                 // calculate the volumes
 509                 ch->leftvol = (int) (scale + pan);
 510                 ch->rightvol = (int) (scale - pan);
 511         }
 512
 513         // LordHavoc: allow adjusting volume of static sounds
 514         if (isstatic)
 515         {
 516                 ch->leftvol *= snd_staticvolume.value;
 517                 ch->rightvol *= snd_staticvolume.value;
 518         }
 519
 520         // clamp volumes
 521         ch->leftvol = bound(0, ch->leftvol, 255);
 522         ch->rightvol = bound(0, ch->rightvol, 255);
 523 }
 524
 525
 526 // =======================================================================
 527 // Start a sound effect
 528 // =======================================================================
 529
 530 int S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 531 {
 532         channel_t *target_chan, *check;
 533         int             vol;
 534         int             ch_idx;
 535         size_t  skip;
 536
 537         if (!sound_started || !sfx || !sfx->fetcher || nosound.integer)
 538                 return -1;
 539
 540         vol = fvol*255;
 541
 542 // pick a channel to play on
 543         target_chan = SND_PickChannel(entnum, entchannel);
 544         if (!target_chan)
 545                 return -1;
 546
 547 // spatialize
 548         memset (target_chan, 0, sizeof(*target_chan));
 549         VectorCopy(origin, target_chan->origin);
 550         target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
 551         target_chan->master_vol = vol;
 552         target_chan->entnum = entnum;
 553         target_chan->entchannel = entchannel;
 554         SND_Spatialize(target_chan, false);
 555
 556         // LordHavoc: spawn the sound anyway because the player might teleport to it
 557         //if (!target_chan->leftvol && !target_chan->rightvol)
 558         //      return;         // not audible at all
 559
 560         // new channel
 561         if (!S_LoadSound (sfx, true))
 562         {
 563                 target_chan->sfx = NULL;
 564                 return -1;              // couldn't load the sound's data
 565         }
 566
 567         target_chan->sfx = sfx;
 568         target_chan->flags = CHANNELFLAG_NONE;
 569         target_chan->pos = 0.0;
 570         target_chan->end = paintedtime + sfx->total_length;
 571         target_chan->lastptime = paintedtime;
 572
 573 // if an identical sound has also been started this frame, offset the pos
 574 // a bit to keep it from just making the first one louder
 575         check = &channels[NUM_AMBIENTS];
 576         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
 577         {
 578                 if (check == target_chan)
 579                         continue;
 580                 if (check->sfx == sfx && !check->pos)
 581                 {
 582                         // LordHavoc: fixed skip calculations
 583                         skip = 0.1 * sfx->format.speed;
 584                         if (skip > sfx->total_length)
 585                                 skip = sfx->total_length;
 586                         if (skip > 0)
 587                                 skip = rand() % skip;
 588                         target_chan->pos += skip;
 589                         target_chan->end -= skip;
 590                         break;
 591                 }
 592         }
 593
 594         return (channels - target_chan);
 595 }
 596
 597 void S_StopSound(int entnum, int entchannel)
 598 {
 599         int i;
 600
 601         for (i=0 ; i<MAX_DYNAMIC_CHANNELS ; i++)
 602         {
 603                 if (channels[i].entnum == entnum
 604                         && channels[i].entchannel == entchannel)
 605                 {
 606                         channels[i].end = 0;
 607                         channels[i].sfx = NULL;
 608                         return;
 609                 }
 610         }
 611 }
 612
 613 void S_StopAllSounds(qboolean clear)
 614 {
 615         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 616         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 617
 618         if (clear)
 619                 S_ClearBuffer();
 620 }
 621
 622 void S_StopAllSoundsC(void)
 623 {
 624         S_StopAllSounds(true);
 625 }
 626
 627 void S_PauseGameSounds (void)
 628 {
 629         unsigned int i;
 630
 631         for (i = 0; i < total_channels; i++)
 632         {
 633                 channel_t *ch;
 634
 635                 ch = &channels[i];
 636                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 637                         ch->flags |= CHANNELFLAG_PAUSED;
 638         }
 639 }
 640
 641 void S_ResumeGameSounds (void)
 642 {
 643         unsigned int i;
 644
 645         for (i = 0; i < total_channels; i++)
 646         {
 647                 channel_t *ch;
 648
 649                 ch = &channels[i];
 650                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 651                         ch->flags &= ~CHANNELFLAG_PAUSED;
 652         }
 653 }
 654
 655 void S_ClearBuffer(void)
 656 {
 657         int             clear;
 658
 659         if (!sound_started || !shm)
 660                 return;
 661
 662         if (shm->format.width == 1)
 663                 clear = 0x80;
 664         else
 665                 clear = 0;
 666
 667 #ifdef _WIN32
 668         if (pDSBuf)
 669         {
 670                 DWORD   dwSize;
 671                 DWORD   *pData;
 672                 int             reps;
 673                 HRESULT hresult;
 674
 675                 reps = 0;
 676
 677                 while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, (LPVOID*)&pData, &dwSize, NULL, NULL, 0)) != DS_OK)
 678                 {
 679                         if (hresult != DSERR_BUFFERLOST)
 680                         {
 681                                 Con_Print("S_ClearBuffer: DS::Lock Sound Buffer Failed\n");
 682                                 S_Shutdown ();
 683                                 return;
 684                         }
 685
 686                         if (++reps > 10000)
 687                         {
 688                                 Con_Print("S_ClearBuffer: DS: couldn't restore buffer\n");
 689                                 S_Shutdown ();
 690                                 return;
 691                         }
 692                 }
 693
 694                 memset(pData, clear, shm->samples * shm->format.width);
 695
 696                 pDSBuf->lpVtbl->Unlock(pDSBuf, pData, dwSize, NULL, 0);
 697
 698         }
 699         else
 700 #endif
 701         if (shm->buffer)
 702         {
 703                 int             setsize = shm->samples * shm->format.width;
 704                 char    *buf = shm->buffer;
 705
 706                 while (setsize--)
 707                         *buf++ = clear;
 708
 709 // on i586/i686 optimized versions of glibc, glibc *wrongly* IMO,
 710 // reads the memory area before writing to it causing a seg fault
 711 // since the memory is PROT_WRITE only and not PROT_READ|PROT_WRITE
 712 //              memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
 713         }
 714 }
 715
 716
 717 /*
 718 =================
 719 S_StaticSound
 720 =================
 721 */
 722 void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
 723 {
 724         channel_t       *ss;
 725
 726         if (!sfx)
 727                 return;
 728
 729         if (total_channels == MAX_CHANNELS)
 730         {
 731                 Con_Print("total_channels == MAX_CHANNELS\n");
 732                 return;
 733         }
 734
 735         if (!S_LoadSound (sfx, true))
 736                 return;
 737
 738         if (sfx->loopstart == -1)
 739                 Con_DPrintf("Quake compatibility warning: Static sound \"%s\" is not looped\n", sfx->name);
 740
 741         ss = &channels[total_channels++];
 742         memset(ss, 0, sizeof(*ss));
 743         ss->flags = CHANNELFLAG_FORCELOOP;
 744         ss->sfx = sfx;
 745         VectorCopy (origin, ss->origin);
 746         ss->master_vol = vol;
 747         ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
 748         ss->end = paintedtime + sfx->total_length;
 749         ss->lastptime = paintedtime;
 750
 751         SND_Spatialize (ss, true);
 752 }
 753
 754
 755 //=============================================================================
 756
 757 /*
 758 ===================
 759 S_UpdateAmbientSounds
 760 ===================
 761 */
 762 void S_UpdateAmbientSounds (void)
 763 {
 764         float           vol;
 765         int                     ambient_channel;
 766         channel_t       *chan;
 767         qbyte           ambientlevels[NUM_AMBIENTS];
 768
 769         // LordHavoc: kill ambient sounds until proven otherwise
 770         for (ambient_channel = 0 ; ambient_channel < NUM_AMBIENTS;ambient_channel++)
 771                 channels[ambient_channel].sfx = NULL;
 772
 773         if (!snd_ambient || ambient_level.value <= 0 || !cl.worldmodel || !cl.worldmodel->brush.AmbientSoundLevelsForPoint)
 774                 return;
 775
 776         cl.worldmodel->brush.AmbientSoundLevelsForPoint(cl.worldmodel, listener_vieworigin, ambientlevels, sizeof(ambientlevels));
 777
 778 // calc ambient sound levels
 779         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 780         {
 781                 if (ambient_sfx[ambient_channel] &&
 782                         (ambient_sfx[ambient_channel]->flags & SFXFLAG_SILENTLYMISSING))
 783                         continue;
 784                 chan = &channels[ambient_channel];
 785                 chan->flags |= CHANNELFLAG_FORCELOOP;
 786                 chan->sfx = ambient_sfx[ambient_channel];
 787
 788                 vol = ambient_level.value * ambientlevels[ambient_channel];
 789                 if (vol < 8)
 790                         vol = 0;
 791
 792         // don't adjust volume too fast
 793                 if (chan->master_vol < vol)
 794                 {
 795                         chan->master_vol += host_realframetime * ambient_fade.value;
 796                         if (chan->master_vol > vol)
 797                                 chan->master_vol = vol;
 798                 }
 799                 else if (chan->master_vol > vol)
 800                 {
 801                         chan->master_vol -= host_realframetime * ambient_fade.value;
 802                         if (chan->master_vol < vol)
 803                                 chan->master_vol = vol;
 804                 }
 805
 806                 chan->leftvol = chan->rightvol = chan->master_vol;
 807         }
 808 }
 809
 810
 811 /*
 812 ============
 813 S_Update
 814
 815 Called once each time through the main loop
 816 ============
 817 */
 818 void S_Update(vec3_t origin, vec3_t forward, vec3_t left, vec3_t up)
 819 {
 820         unsigned int i, j, total;
 821         channel_t *ch, *combine;
 822
 823         if (!snd_initialized.integer || (snd_blocked > 0))
 824                 return;
 825
 826         VectorCopy(origin, listener_vieworigin);
 827         VectorCopy(forward, listener_viewforward);
 828         VectorCopy(left, listener_viewleft);
 829         VectorCopy(up, listener_viewup);
 830
 831 // update general area ambient sound sources
 832         S_UpdateAmbientSounds ();
 833
 834         combine = NULL;
 835
 836 // update spatialization for static and dynamic sounds
 837         ch = channels+NUM_AMBIENTS;
 838         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
 839         {
 840                 if (!ch->sfx)
 841                         continue;
 842                 SND_Spatialize(ch, i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS);         // respatialize channel
 843                 if (!ch->leftvol && !ch->rightvol)
 844                         continue;
 845
 846         // try to combine static sounds with a previous channel of the same
 847         // sound effect so we don't mix five torches every frame
 848
 849                 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
 850                 {
 851                 // see if it can just use the last one
 852                         if (combine && combine->sfx == ch->sfx)
 853                         {
 854                                 combine->leftvol += ch->leftvol;
 855                                 combine->rightvol += ch->rightvol;
 856                                 ch->leftvol = ch->rightvol = 0;
 857                                 continue;
 858                         }
 859                 // search for one
 860                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
 861                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
 862                                 if (combine->sfx == ch->sfx)
 863                                         break;
 864
 865                         if (j == total_channels)
 866                                 combine = NULL;
 867                         else
 868                         {
 869                                 if (combine != ch)
 870                                 {
 871                                         combine->leftvol += ch->leftvol;
 872                                         combine->rightvol += ch->rightvol;
 873                                         ch->leftvol = ch->rightvol = 0;
 874                                 }
 875                                 continue;
 876                         }
 877                 }
 878         }
 879
 880 //
 881 // debugging output
 882 //
 883         if (snd_show.integer)
 884         {
 885                 total = 0;
 886                 ch = channels;
 887                 for (i=0 ; i<total_channels; i++, ch++)
 888                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
 889                                 total++;
 890
 891                 Con_Printf("----(%u)----\n", total);
 892         }
 893
 894 // mix some sound
 895         S_Update_();
 896 }
 897
 898 void GetSoundtime(void)
 899 {
 900         int             samplepos;
 901         static  int             buffers;
 902         static  int             oldsamplepos;
 903         int             fullsamples;
 904
 905         fullsamples = shm->samples / shm->format.channels;
 906
 907 // it is possible to miscount buffers if it has wrapped twice between
 908 // calls to S_Update.  Oh well.
 909         samplepos = SNDDMA_GetDMAPos();
 910
 911         if (samplepos < oldsamplepos)
 912         {
 913                 buffers++;                                      // buffer wrapped
 914
 915                 if (paintedtime > 0x40000000)
 916                 {       // time to chop things off to avoid 32 bit limits
 917                         buffers = 0;
 918                         paintedtime = fullsamples;
 919                         S_StopAllSounds (true);
 920                 }
 921         }
 922         oldsamplepos = samplepos;
 923
 924         soundtime = buffers * fullsamples + samplepos / shm->format.channels;
 925 }
 926
 927 void IN_Accumulate (void);
 928
 929 void S_ExtraUpdate (void)
 930 {
 931
 932 #ifdef _WIN32
 933         IN_Accumulate ();
 934 #endif
 935
 936         if (snd_noextraupdate.integer)
 937                 return;         // don't pollute timings
 938         S_Update_();
 939 }
 940
 941 void S_Update_(void)
 942 {
 943         unsigned        endtime;
 944         int                             samps;
 945
 946         if (!sound_started || (snd_blocked > 0))
 947                 return;
 948
 949 // Updates DMA time
 950         GetSoundtime();
 951
 952 // check to make sure that we haven't overshot
 953         if (paintedtime < soundtime)
 954                 paintedtime = soundtime;
 955
 956 // mix ahead of current position
 957         endtime = soundtime + _snd_mixahead.value * shm->format.speed;
 958         samps = shm->samples >> (shm->format.channels - 1);
 959         if (endtime > (unsigned int)(soundtime + samps))
 960                 endtime = soundtime + samps;
 961
 962 #ifdef _WIN32
 963 // if the buffer was lost or stopped, restore it and/or restart it
 964         {
 965                 DWORD   dwStatus;
 966
 967                 if (pDSBuf)
 968                 {
 969                         if (pDSBuf->lpVtbl->GetStatus (pDSBuf, &dwStatus) != DS_OK)
 970                                 Con_Print("Couldn't get sound buffer status\n");
 971
 972                         if (dwStatus & DSBSTATUS_BUFFERLOST)
 973                                 pDSBuf->lpVtbl->Restore (pDSBuf);
 974
 975                         if (!(dwStatus & DSBSTATUS_PLAYING))
 976                                 pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
 977                 }
 978         }
 979 #endif
 980
 981         S_PaintChannels (endtime);
 982
 983         SNDDMA_Submit ();
 984 }
 985
 986 /*
 987 ===============================================================================
 988
 989 console functions
 990
 991 ===============================================================================
 992 */
 993
 994 static void S_Play_Common(float fvol, float attenuation)
 995 {
 996         int     i, ch_ind;
 997         char name[256];
 998         sfx_t   *sfx;
 999
1000         i = 1;
1001         while (i<Cmd_Argc())
1002         {
1003                 if (!strrchr(Cmd_Argv(i), '.'))
1004                         snprintf(name, sizeof(name), "%s.wav", Cmd_Argv(i));
1005                 else
1006                         strlcpy(name, Cmd_Argv(i), sizeof(name));
1007                 sfx = S_PrecacheSound(name, true);
1008
1009                 // If we need to get the volume from the command line
1010                 if (fvol == -1.0f)
1011                 {
1012                         fvol = atof(Cmd_Argv(i+1));
1013                         i += 2;
1014                 }
1015                 else
1016                         i++;
1017
1018                 ch_ind = S_StartSound(-1, 0, sfx, listener_vieworigin, fvol, attenuation);
1019                 if (ch_ind >= 0)
1020                         channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1021         }
1022 }
1023
1024 void S_Play(void)
1025 {
1026         S_Play_Common (1.0f, 1.0f);
1027 }
1028
1029 void S_Play2(void)
1030 {
1031         S_Play_Common (1.0f, 0.0f);
1032 }
1033
1034 void S_PlayVol(void)
1035 {
1036         S_Play_Common (-1.0f, 0.0f);
1037 }
1038
1039 void S_SoundList(void)
1040 {
1041         int             i;
1042         sfx_t   *sfx;
1043         int             size, total;
1044
1045         total = 0;
1046         for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
1047         {
1048                 if (sfx->fetcher != NULL)
1049                 {
1050                         size = sfx->mempool->totalsize;
1051                         total += size;
1052                         Con_Printf("%c(%2db) %7i : %s\n", sfx->loopstart >= 0 ? 'L' : ' ', sfx->format.width * 8, size, sfx->name);
1053                 }
1054         }
1055         Con_Printf("Total resident: %i\n", total);
1056 }
1057
1058
1059 void S_LocalSound (char *sound)
1060 {
1061         sfx_t   *sfx;
1062         int             ch_ind;
1063
1064         if (!snd_initialized.integer || nosound.integer)
1065                 return;
1066
1067         sfx = S_PrecacheSound (sound, true);
1068         if (!sfx)
1069         {
1070                 Con_Printf("S_LocalSound: can't precache %s\n", sound);
1071                 return;
1072         }
1073
1074         ch_ind = S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1);
1075         if (ch_ind >= 0)
1076                 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1077 }
1078
1079
1080 #define RAWSAMPLESBUFFER 32768
1081 short s_rawsamplesbuffer[RAWSAMPLESBUFFER * 2];
1082 int s_rawsamplesbuffer_start;
1083 size_t s_rawsamplesbuffer_count;
1084
1085 void S_RawSamples_Enqueue(short *samples, unsigned int length)
1086 {
1087         int b2, b3;
1088         //Con_Printf("S_RawSamples_Enqueue: %i samples\n", length);
1089         if (s_rawsamplesbuffer_count + length > RAWSAMPLESBUFFER)
1090                 return;
1091         b2 = (s_rawsamplesbuffer_start + s_rawsamplesbuffer_count) % RAWSAMPLESBUFFER;
1092         if (b2 + length > RAWSAMPLESBUFFER)
1093         {
1094                 b3 = (b2 + length) % RAWSAMPLESBUFFER;
1095                 memcpy(s_rawsamplesbuffer + b2 * 2, samples, (RAWSAMPLESBUFFER - b2) * sizeof(short[2]));
1096                 memcpy(s_rawsamplesbuffer, samples + (RAWSAMPLESBUFFER - b2) * 2, b3 * sizeof(short[2]));
1097         }
1098         else
1099                 memcpy(s_rawsamplesbuffer + b2 * 2, samples, length * sizeof(short[2]));
1100         s_rawsamplesbuffer_count += length;
1101 }
1102
1103 void S_RawSamples_Dequeue(int *samples, unsigned int length)
1104 {
1105         int b1, b2;
1106         size_t l;
1107         int i;
1108         short *in;
1109         int *out;
1110         int count;
1111         l = length;
1112         if (l > s_rawsamplesbuffer_count)
1113                 l = s_rawsamplesbuffer_count;
1114         b1 = (s_rawsamplesbuffer_start) % RAWSAMPLESBUFFER;
1115         if (b1 + l > RAWSAMPLESBUFFER)
1116         {
1117                 b2 = (b1 + l) % RAWSAMPLESBUFFER;
1118                 //memcpy(samples, s_rawsamplesbuffer + b1 * 2, (RAWSAMPLESBUFFER - b1) * sizeof(short[2]));
1119                 //memcpy(samples + (RAWSAMPLESBUFFER - b1) * 2, s_rawsamplesbuffer, b2 * sizeof(short[2]));
1120                 for (out = samples, in = s_rawsamplesbuffer + b1 * 2, count = (RAWSAMPLESBUFFER - b1) * 2, i = 0;i < count;i++)
1121                         out[i] = in[i];
1122                 for (out = samples + (RAWSAMPLESBUFFER - b1) * 2, in = s_rawsamplesbuffer, count = b2 * 2, i = 0;i < count;i++)
1123                         out[i] = in[i];
1124                 //Con_Printf("S_RawSamples_Dequeue: buffer wrap %i %i\n", (RAWSAMPLESBUFFER - b1), b2);
1125         }
1126         else
1127         {
1128                 //memcpy(samples, s_rawsamplesbuffer + b1 * 2, l * sizeof(short[2]));
1129                 for (out = samples, in = s_rawsamplesbuffer + b1 * 2, count = l * 2, i = 0;i < count;i++)
1130                         out[i] = in[i];
1131                 //Con_Printf("S_RawSamples_Dequeue: normal      %i\n", l);
1132         }
1133         if (l < (int)length)
1134         {
1135                 memset(samples + l * 2, 0, (length - l) * sizeof(int[2]));
1136                 //Con_Printf("S_RawSamples_Dequeue: padding with %i samples\n", length - l);
1137         }
1138         s_rawsamplesbuffer_start = (s_rawsamplesbuffer_start + l) % RAWSAMPLESBUFFER;
1139         s_rawsamplesbuffer_count -= l;
1140 }
1141
1142 void S_RawSamples_ClearQueue(void)
1143 {
1144         s_rawsamplesbuffer_count = 0;
1145         s_rawsamplesbuffer_start = 0;
1146 }
1147
1148 int S_RawSamples_QueueWantsMore(void)
1149 {
1150         if (shm != NULL && s_rawsamplesbuffer_count < min(shm->format.speed >> 1, RAWSAMPLESBUFFER >> 1))
1151                 return RAWSAMPLESBUFFER - s_rawsamplesbuffer_count;
1152         else
1153                 return 0;
1154 }
1155
1156 void S_ResampleBuffer16Stereo(short *input, int inputlength, short *output, int outputlength)
1157 {
1158         if (inputlength != outputlength)
1159         {
1160                 int i, position, stopposition, step;
1161                 short *in, *out;
1162                 step = (float) inputlength * 256.0f / (float) outputlength;
1163                 position = 0;
1164                 stopposition = (inputlength - 1) << 8;
1165                 out = output;
1166                 for (i = 0;i < outputlength && position < stopposition;i++, position += step)
1167                 {
1168                         in = input + ((position >> 8) << 1);
1169                         out[0] = (((in[1] - in[0]) * (position & 255)) >> 8) + in[0];
1170                         out[1] = (((in[3] - in[2]) * (position & 255)) >> 8) + in[2];
1171                         out += 2;
1172                 }
1173                 stopposition = inputlength << 8;
1174                 for (i = 0;i < outputlength && position < stopposition;i++, position += step)
1175                 {
1176                         in = input + ((position >> 8) << 1);
1177                         out[0] = in[0];
1178                         out[1] = in[2];
1179                         out += 2;
1180                 }
1181         }
1182         else
1183                 memcpy(output, input, inputlength * sizeof(short[2]));
1184 }
1185
1186 int S_RawSamples_SampleRate(void)
1187 {
1188         return shm != NULL ? shm->format.speed : 0;
1189 }
1190