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 void S_ClearBuffer (void);
  44
  45
  46 // =======================================================================
  47 // Internal sound data & structures
  48 // =======================================================================
  49
  50 channel_t channels[MAX_CHANNELS];
  51 unsigned int total_channels;
  52
  53 int snd_blocked = 0;
  54 cvar_t snd_initialized = { CVAR_READONLY, "snd_initialized", "0"};
  55 cvar_t snd_streaming = { CVAR_SAVE, "snd_streaming", "1"};
  56
  57 // pointer should go away
  58 volatile dma_t *shm = 0;
  59 volatile dma_t sn;
  60
  61 vec3_t listener_vieworigin;
  62 vec3_t listener_viewforward;
  63 vec3_t listener_viewleft;
  64 vec3_t listener_viewup;
  65 vec_t sound_nominal_clip_dist=1000.0;
  66 mempool_t *snd_mempool;
  67
  68 // sample PAIRS
  69 int soundtime;
  70 int paintedtime;
  71
  72
  73 //LordHavoc: increased the client sound limit from 512 to 4096 for the Nehahra movie
  74 #define MAX_SFX 4096
  75 sfx_t *known_sfx; // allocated [MAX_SFX]
  76 int num_sfx;
  77
  78 sfx_t *ambient_sfx[NUM_AMBIENTS];
  79
  80 int sound_started = 0;
  81
  82 cvar_t bgmvolume = {CVAR_SAVE, "bgmvolume", "1"};
  83 cvar_t volume = {CVAR_SAVE, "volume", "0.7"};
  84 cvar_t snd_staticvolume = {CVAR_SAVE, "snd_staticvolume", "1"};
  85
  86 cvar_t nosound = {0, "nosound", "0"};
  87 cvar_t snd_precache = {0, "snd_precache", "1"};
  88 cvar_t bgmbuffer = {0, "bgmbuffer", "4096"};
  89 cvar_t ambient_level = {0, "ambient_level", "0.3"};
  90 cvar_t ambient_fade = {0, "ambient_fade", "100"};
  91 cvar_t snd_noextraupdate = {0, "snd_noextraupdate", "0"};
  92 cvar_t snd_show = {0, "snd_show", "0"};
  93 cvar_t _snd_mixahead = {CVAR_SAVE, "_snd_mixahead", "0.1"};
  94 cvar_t snd_swapstereo = {CVAR_SAVE, "snd_swapstereo", "0"};
  95
  96
  97 // ====================================================================
  98 // User-setable variables
  99 // ====================================================================
 100
 101
 102 //
 103 // Fake dma is a synchronous faking of the DMA progress used for
 104 // isolating performance in the renderer.  The fakedma_updates is
 105 // number of times S_Update() is called per second.
 106 //
 107
 108 qboolean fakedma = false;
 109 int fakedma_updates = 15;
 110
 111
 112 void S_SoundInfo_f(void)
 113 {
 114         if (!sound_started || !shm)
 115         {
 116                 Con_Print("sound system not started\n");
 117                 return;
 118         }
 119
 120         Con_Printf("%5d stereo\n", shm->format.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->format.width * 8);
 124         Con_Printf("%5d speed\n", shm->format.speed);
 125         Con_Printf("%p dma buffer\n", shm->buffer);
 126         Con_Printf("%5u total_channels\n", total_channels);
 127 }
 128
 129 void S_UnloadSounds(void)
 130 {
 131         int i;
 132         for (i = 0;i < num_sfx;i++)
 133                 S_UnloadSound(known_sfx + i);
 134 }
 135
 136 void S_LoadSounds(void)
 137 {
 138         int i;
 139         for (i = 0;i < num_sfx;i++)
 140                 S_LoadSound(known_sfx + i, false);
 141 }
 142
 143 void S_Startup(void)
 144 {
 145         if (!snd_initialized.integer)
 146                 return;
 147
 148         shm = &sn;
 149         memset((void *)shm, 0, sizeof(*shm));
 150
 151 // create a piece of DMA memory
 152
 153         if (fakedma)
 154         {
 155                 shm->format.width = 2;
 156                 shm->format.speed = 22050;
 157                 shm->format.channels = 2;
 158                 shm->samples = 32768;
 159                 shm->samplepos = 0;
 160                 shm->buffer = Mem_Alloc(snd_mempool, shm->format.channels * shm->samples * shm->format.width);
 161         }
 162         else
 163         {
 164                 if (!SNDDMA_Init())
 165                 {
 166                         Con_Print("S_Startup: SNDDMA_Init failed.\n");
 167                         sound_started = 0;
 168                         shm = NULL;
 169                         return;
 170                 }
 171         }
 172
 173         sound_started = 1;
 174
 175         Con_DPrintf("Sound sampling rate: %i\n", shm->format.speed);
 176
 177         //S_LoadSounds();
 178
 179         S_StopAllSounds(true);
 180 }
 181
 182 void S_Shutdown(void)
 183 {
 184         if (!sound_started)
 185                 return;
 186
 187         //S_UnloadSounds();
 188
 189         if (fakedma)
 190                 Mem_Free(shm->buffer);
 191         else
 192                 SNDDMA_Shutdown();
 193
 194         shm = NULL;
 195         sound_started = 0;
 196 }
 197
 198 void S_Restart_f(void)
 199 {
 200         S_Shutdown();
 201         S_Startup();
 202 }
 203
 204 /*
 205 ================
 206 S_Init
 207 ================
 208 */
 209 void S_Init(void)
 210 {
 211         Con_DPrint("\nSound Initialization\n");
 212
 213         S_RawSamples_ClearQueue();
 214
 215         Cvar_RegisterVariable(&volume);
 216         Cvar_RegisterVariable(&bgmvolume);
 217         Cvar_RegisterVariable(&snd_staticvolume);
 218
 219         if (COM_CheckParm("-nosound") || COM_CheckParm("-safe"))
 220                 return;
 221
 222         snd_mempool = Mem_AllocPool("sound");
 223
 224         if (COM_CheckParm("-simsound"))
 225                 fakedma = true;
 226
 227         Cmd_AddCommand("play", S_Play);
 228         Cmd_AddCommand("play2", S_Play2);
 229         Cmd_AddCommand("playvol", S_PlayVol);
 230         Cmd_AddCommand("stopsound", S_StopAllSoundsC);
 231         Cmd_AddCommand("soundlist", S_SoundList);
 232         Cmd_AddCommand("soundinfo", S_SoundInfo_f);
 233         Cmd_AddCommand("snd_restart", S_Restart_f);
 234
 235         Cvar_RegisterVariable(&nosound);
 236         Cvar_RegisterVariable(&snd_precache);
 237         Cvar_RegisterVariable(&snd_initialized);
 238         Cvar_RegisterVariable(&snd_streaming);
 239         Cvar_RegisterVariable(&bgmbuffer);
 240         Cvar_RegisterVariable(&ambient_level);
 241         Cvar_RegisterVariable(&ambient_fade);
 242         Cvar_RegisterVariable(&snd_noextraupdate);
 243         Cvar_RegisterVariable(&snd_show);
 244         Cvar_RegisterVariable(&_snd_mixahead);
 245         Cvar_RegisterVariable(&snd_swapstereo); // LordHavoc: for people with backwards sound wiring
 246
 247         Cvar_SetValueQuick(&snd_initialized, true);
 248
 249         known_sfx = Mem_Alloc(snd_mempool, MAX_SFX*sizeof(sfx_t));
 250         num_sfx = 0;
 251
 252         SND_InitScaletable ();
 253
 254         ambient_sfx[AMBIENT_WATER] = S_PrecacheSound ("ambience/water1.wav", false, true);
 255         ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav", false, true);
 256
 257         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 258         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 259
 260         OGG_OpenLibrary ();
 261 }
 262
 263
 264 // =======================================================================
 265 // Load a sound
 266 // =======================================================================
 267
 268 /*
 269 =========
 270 S_GetCached
 271
 272 =========
 273 */
 274 sfx_t *S_GetCached (const char *name, qboolean stdpath)
 275 {
 276         char namebuffer [MAX_QPATH];
 277         size_t len;
 278         int i;
 279
 280         if (!snd_initialized.integer)
 281                 return NULL;
 282
 283         if (!name)
 284                 Host_Error("S_GetCached: NULL");
 285
 286         // Add the default sound directory to the path
 287         len = snprintf (namebuffer, sizeof (namebuffer), stdpath ? "sound/%s" : "%s", name);
 288         if (len >= sizeof (namebuffer))
 289                 Host_Error ("S_GetCached: sound name too long (%s)", name);
 290
 291         for(i = 0;i < num_sfx;i++)
 292                 if(!strcmp(known_sfx[i].name, namebuffer))
 293                         return &known_sfx[i];
 294
 295         return NULL;
 296 }
 297
 298 /*
 299 ==================
 300 S_FindName
 301
 302 ==================
 303 */
 304 sfx_t *S_FindName (const char *name, qboolean stdpath)
 305 {
 306         sfx_t *sfx;
 307
 308         if (!snd_initialized.integer)
 309                 return NULL;
 310
 311         sfx = S_GetCached (name, stdpath);
 312
 313         // If we haven't allocated a sfx_t struct for it yet
 314         if (sfx == NULL)
 315         {
 316                 if (num_sfx == MAX_SFX)
 317                         Sys_Error ("S_FindName: out of sfx_t");
 318
 319                 sfx = &known_sfx[num_sfx++];
 320                 memset (sfx, 0, sizeof(*sfx));
 321                 snprintf (sfx->name, sizeof (sfx->name), stdpath ? "sound/%s" : "%s", name);
 322         }
 323         return sfx;
 324 }
 325
 326
 327 /*
 328 ==================
 329 S_TouchSound
 330
 331 ==================
 332 */
 333 void S_TouchSound (const char *name, qboolean stdpath)
 334 {
 335         sfx_t *sfx;
 336
 337         sfx = S_FindName (name, stdpath);
 338
 339         // Set the "used" flag for this sound
 340         if (sfx != NULL)
 341                 sfx->flags |= SFXFLAG_USED;
 342 }
 343
 344
 345 /*
 346 ==================
 347 S_ClearUsed
 348
 349 Reset the "used" flag of all precached sounds
 350 ==================
 351 */
 352 void S_ClearUsed (void)
 353 {
 354         int i;
 355
 356         for (i = 0; i < num_sfx; i++)
 357                 known_sfx[i].flags &= ~SFXFLAG_USED;
 358 }
 359
 360
 361 /*
 362 ==================
 363 S_PurgeUnused
 364
 365 Free all precached sounds without the "used" flag
 366 ==================
 367 */
 368 void S_PurgeUnused (void)
 369 {
 370         int i;
 371         sfx_t *sfx;
 372
 373         for (i = 0; i < num_sfx; i++)
 374         {
 375                 sfx = &known_sfx[i];
 376                 if (! (sfx->flags & SFXFLAG_USED))
 377                         S_UnloadSound (sfx);
 378         }
 379 }
 380
 381
 382 /*
 383 ==================
 384 S_PrecacheSound
 385
 386 ==================
 387 */
 388 sfx_t *S_PrecacheSound (const char *name, qboolean complain, qboolean stdpath)
 389 {
 390         sfx_t *sfx;
 391
 392         if (!snd_initialized.integer)
 393                 return NULL;
 394
 395         sfx = S_FindName (name, stdpath);
 396
 397         if (!nosound.integer && snd_precache.integer)
 398                 S_LoadSound(sfx, complain);
 399
 400         return sfx;
 401 }
 402
 403
 404 //=============================================================================
 405
 406 /*
 407 =================
 408 SND_PickChannel
 409
 410 Picks a channel based on priorities, empty slots, number of channels
 411 =================
 412 */
 413 channel_t *SND_PickChannel(int entnum, int entchannel)
 414 {
 415         int ch_idx;
 416         int first_to_die;
 417         int life_left;
 418         channel_t* ch;
 419
 420 // Check for replacement sound, or find the best one to replace
 421         first_to_die = -1;
 422         life_left = 0x7fffffff;
 423         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
 424         {
 425                 ch = &channels[ch_idx];
 426                 if (entchannel != 0             // channel 0 never overrides
 427                 && ch->entnum == entnum
 428                 && (ch->entchannel == entchannel || entchannel == -1) )
 429                 {       // always override sound from same entity
 430                         first_to_die = ch_idx;
 431                         break;
 432                 }
 433
 434                 // don't let monster sounds override player sounds
 435                 if (ch->entnum == cl.viewentity && entnum != cl.viewentity && ch->sfx)
 436                         continue;
 437
 438                 // don't override looped sounds
 439                 if ((ch->flags & CHANNELFLAG_FORCELOOP) != 0 ||
 440                         (ch->sfx != NULL && ch->sfx->loopstart >= 0))
 441                         continue;
 442
 443                 if (ch->end - paintedtime < life_left)
 444                 {
 445                         life_left = ch->end - paintedtime;
 446                         first_to_die = ch_idx;
 447                 }
 448         }
 449
 450         if (first_to_die == -1)
 451                 return NULL;
 452
 453         if (channels[first_to_die].sfx)
 454                 channels[first_to_die].sfx = NULL;
 455
 456         return &channels[first_to_die];
 457 }
 458
 459 /*
 460 =================
 461 SND_Spatialize
 462
 463 Spatializes a channel
 464 =================
 465 */
 466 void SND_Spatialize(channel_t *ch, int isstatic)
 467 {
 468         vec_t dist, scale, pan;
 469         vec3_t source_vec;
 470
 471         // anything coming from the view entity will always be full volume
 472         // LordHavoc: make sounds with ATTN_NONE have no spatialization
 473         if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
 474         {
 475                 ch->leftvol = ch->master_vol;
 476                 ch->rightvol = ch->master_vol;
 477         }
 478         else
 479         {
 480                 // update sound origin if we know about the entity
 481                 if (ch->entnum > 0 && cls.state == ca_connected && cl_entities[ch->entnum].state_current.active)
 482                 {
 483                         //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]);
 484                         VectorCopy(cl_entities[ch->entnum].state_current.origin, ch->origin);
 485                         if (cl_entities[ch->entnum].state_current.modelindex && cl.model_precache[cl_entities[ch->entnum].state_current.modelindex]->soundfromcenter)
 486                                 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);
 487                 }
 488
 489                 // calculate stereo seperation and distance attenuation
 490                 VectorSubtract(ch->origin, listener_vieworigin, source_vec);
 491                 dist = VectorNormalizeLength(source_vec);
 492                 // distance
 493                 scale = ch->master_vol * (1.0 - (dist * ch->dist_mult));
 494                 // panning
 495                 pan = scale * DotProduct(listener_viewleft, source_vec);
 496                 // calculate the volumes
 497                 ch->leftvol = (int) (scale + pan);
 498                 ch->rightvol = (int) (scale - pan);
 499         }
 500
 501         // LordHavoc: allow adjusting volume of static sounds
 502         if (isstatic)
 503         {
 504                 ch->leftvol *= snd_staticvolume.value;
 505                 ch->rightvol *= snd_staticvolume.value;
 506         }
 507
 508         // clamp volumes
 509         ch->leftvol = bound(0, ch->leftvol, 255);
 510         ch->rightvol = bound(0, ch->rightvol, 255);
 511 }
 512
 513
 514 // =======================================================================
 515 // Start a sound effect
 516 // =======================================================================
 517
 518 int S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 519 {
 520         channel_t *target_chan, *check;
 521         int             vol;
 522         int             ch_idx;
 523         size_t  skip;
 524
 525         if (!sound_started || !sfx || !sfx->fetcher || nosound.integer)
 526                 return -1;
 527
 528         vol = fvol*255;
 529
 530 // pick a channel to play on
 531         target_chan = SND_PickChannel(entnum, entchannel);
 532         if (!target_chan)
 533                 return -1;
 534
 535 // spatialize
 536         memset (target_chan, 0, sizeof(*target_chan));
 537         VectorCopy(origin, target_chan->origin);
 538         target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
 539         target_chan->master_vol = vol;
 540         target_chan->entnum = entnum;
 541         target_chan->entchannel = entchannel;
 542         SND_Spatialize(target_chan, false);
 543
 544         // LordHavoc: spawn the sound anyway because the player might teleport to it
 545         //if (!target_chan->leftvol && !target_chan->rightvol)
 546         //      return;         // not audible at all
 547
 548         // new channel
 549         if (!S_LoadSound (sfx, true))
 550         {
 551                 target_chan->sfx = NULL;
 552                 return -1;              // couldn't load the sound's data
 553         }
 554
 555         target_chan->sfx = sfx;
 556         target_chan->flags = CHANNELFLAG_NONE;
 557         target_chan->pos = 0.0;
 558         target_chan->end = paintedtime + sfx->total_length;
 559         target_chan->lastptime = paintedtime;
 560
 561 // if an identical sound has also been started this frame, offset the pos
 562 // a bit to keep it from just making the first one louder
 563         check = &channels[NUM_AMBIENTS];
 564         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
 565         {
 566                 if (check == target_chan)
 567                         continue;
 568                 if (check->sfx == sfx && !check->pos)
 569                 {
 570                         // LordHavoc: fixed skip calculations
 571                         skip = 0.1 * sfx->format.speed;
 572                         if (skip > sfx->total_length)
 573                                 skip = sfx->total_length;
 574                         if (skip > 0)
 575                                 skip = rand() % skip;
 576                         target_chan->pos += skip;
 577                         target_chan->end -= skip;
 578                         break;
 579                 }
 580         }
 581
 582         return (target_chan - channels);
 583 }
 584
 585 void S_StopChannel (unsigned int channel_ind)
 586 {
 587         channel_t *ch;
 588
 589         if (channel_ind >= total_channels)
 590                 return;
 591
 592         ch = &channels[channel_ind];
 593         if (ch->sfx != NULL)
 594         {
 595                 if (ch->sfx->fetcher != NULL)
 596                 {
 597                         snd_fetcher_end_t fetcher_end = ch->sfx->fetcher->end;
 598                         if (fetcher_end != NULL)
 599                                 fetcher_end (ch);
 600                 }
 601                 ch->sfx = NULL;
 602         }
 603         ch->end = 0;
 604 }
 605
 606 void S_PauseChannel (unsigned int channel_ind, qboolean toggle)
 607 {
 608         if (toggle)
 609                 channels[channel_ind].flags |= CHANNELFLAG_PAUSED;
 610         else
 611                 channels[channel_ind].flags &= ~CHANNELFLAG_PAUSED;
 612 }
 613
 614 void S_LoopChannel (unsigned int channel_ind, qboolean toggle)
 615 {
 616         if (toggle)
 617                 channels[channel_ind].flags |= CHANNELFLAG_FORCELOOP;
 618         else
 619                 channels[channel_ind].flags &= ~CHANNELFLAG_FORCELOOP;
 620 }
 621
 622 void S_StopSound(int entnum, int entchannel)
 623 {
 624         unsigned int i;
 625
 626         for (i = 0; i < MAX_DYNAMIC_CHANNELS; i++)
 627                 if (channels[i].entnum == entnum && channels[i].entchannel == entchannel)
 628                 {
 629                         S_StopChannel (i);
 630                         return;
 631                 }
 632 }
 633
 634 void S_StopAllSounds(qboolean clear)
 635 {
 636         unsigned int i;
 637
 638         for (i = 0; i < total_channels; i++)
 639                 S_StopChannel (i);
 640
 641         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 642         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 643
 644         if (clear)
 645                 S_ClearBuffer();
 646 }
 647
 648 void S_StopAllSoundsC(void)
 649 {
 650         S_StopAllSounds(true);
 651 }
 652
 653 void S_PauseGameSounds (void)
 654 {
 655         unsigned int i;
 656
 657         for (i = 0; i < total_channels; i++)
 658         {
 659                 channel_t *ch;
 660
 661                 ch = &channels[i];
 662                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 663                         ch->flags |= CHANNELFLAG_PAUSED;
 664         }
 665 }
 666
 667 void S_ResumeGameSounds (void)
 668 {
 669         unsigned int i;
 670
 671         for (i = 0; i < total_channels; i++)
 672         {
 673                 channel_t *ch;
 674
 675                 ch = &channels[i];
 676                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 677                         ch->flags &= ~CHANNELFLAG_PAUSED;
 678         }
 679 }
 680
 681 void S_SetChannelVolume (unsigned int ch_ind, float fvol)
 682 {
 683         channels[ch_ind].master_vol = fvol * 255;
 684 }
 685
 686
 687 void S_ClearBuffer(void)
 688 {
 689         int             clear;
 690
 691         if (!sound_started || !shm)
 692                 return;
 693
 694         if (shm->format.width == 1)
 695                 clear = 0x80;
 696         else
 697                 clear = 0;
 698
 699 #ifdef _WIN32
 700         if (pDSBuf)
 701         {
 702                 DWORD   dwSize;
 703                 DWORD   *pData;
 704                 int             reps;
 705                 HRESULT hresult;
 706
 707                 reps = 0;
 708
 709                 while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, (LPVOID*)&pData, &dwSize, NULL, NULL, 0)) != DS_OK)
 710                 {
 711                         if (hresult != DSERR_BUFFERLOST)
 712                         {
 713                                 Con_Print("S_ClearBuffer: DS::Lock Sound Buffer Failed\n");
 714                                 S_Shutdown ();
 715                                 return;
 716                         }
 717
 718                         if (++reps > 10000)
 719                         {
 720                                 Con_Print("S_ClearBuffer: DS: couldn't restore buffer\n");
 721                                 S_Shutdown ();
 722                                 return;
 723                         }
 724                 }
 725
 726                 memset(pData, clear, shm->samples * shm->format.width);
 727
 728                 pDSBuf->lpVtbl->Unlock(pDSBuf, pData, dwSize, NULL, 0);
 729
 730         }
 731         else
 732 #endif
 733         if (shm->buffer)
 734         {
 735                 int             setsize = shm->samples * shm->format.width;
 736                 char    *buf = shm->buffer;
 737
 738                 while (setsize--)
 739                         *buf++ = clear;
 740
 741 // on i586/i686 optimized versions of glibc, glibc *wrongly* IMO,
 742 // reads the memory area before writing to it causing a seg fault
 743 // since the memory is PROT_WRITE only and not PROT_READ|PROT_WRITE
 744 //              memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
 745         }
 746 }
 747
 748
 749 /*
 750 =================
 751 S_StaticSound
 752 =================
 753 */
 754 void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
 755 {
 756         channel_t       *ss;
 757
 758         if (!sfx)
 759                 return;
 760
 761         if (total_channels == MAX_CHANNELS)
 762         {
 763                 Con_Print("total_channels == MAX_CHANNELS\n");
 764                 return;
 765         }
 766
 767         if (!S_LoadSound (sfx, true))
 768                 return;
 769
 770         if (sfx->loopstart == -1)
 771                 Con_DPrintf("Quake compatibility warning: Static sound \"%s\" is not looped\n", sfx->name);
 772
 773         ss = &channels[total_channels++];
 774         memset(ss, 0, sizeof(*ss));
 775         ss->flags = CHANNELFLAG_FORCELOOP;
 776         ss->sfx = sfx;
 777         VectorCopy (origin, ss->origin);
 778         ss->master_vol = vol;
 779         ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
 780         ss->end = paintedtime + sfx->total_length;
 781         ss->lastptime = paintedtime;
 782
 783         SND_Spatialize (ss, true);
 784 }
 785
 786
 787 //=============================================================================
 788
 789 /*
 790 ===================
 791 S_UpdateAmbientSounds
 792 ===================
 793 */
 794 void S_UpdateAmbientSounds (void)
 795 {
 796         float           vol;
 797         int                     ambient_channel;
 798         channel_t       *chan;
 799         qbyte           ambientlevels[NUM_AMBIENTS];
 800
 801         // LordHavoc: kill ambient sounds until proven otherwise
 802         for (ambient_channel = 0 ; ambient_channel < NUM_AMBIENTS;ambient_channel++)
 803                 channels[ambient_channel].sfx = NULL;
 804
 805         if (ambient_level.value <= 0 || !cl.worldmodel || !cl.worldmodel->brush.AmbientSoundLevelsForPoint)
 806                 return;
 807
 808         cl.worldmodel->brush.AmbientSoundLevelsForPoint(cl.worldmodel, listener_vieworigin, ambientlevels, sizeof(ambientlevels));
 809
 810 // calc ambient sound levels
 811         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 812         {
 813                 if (ambient_sfx[ambient_channel] &&
 814                         (ambient_sfx[ambient_channel]->flags & SFXFLAG_SILENTLYMISSING))
 815                         continue;
 816                 chan = &channels[ambient_channel];
 817                 chan->flags |= CHANNELFLAG_FORCELOOP;
 818                 chan->sfx = ambient_sfx[ambient_channel];
 819
 820                 vol = ambient_level.value * ambientlevels[ambient_channel];
 821                 if (vol < 8)
 822                         vol = 0;
 823
 824         // don't adjust volume too fast
 825                 if (chan->master_vol < vol)
 826                 {
 827                         chan->master_vol += host_realframetime * ambient_fade.value;
 828                         if (chan->master_vol > vol)
 829                                 chan->master_vol = vol;
 830                 }
 831                 else if (chan->master_vol > vol)
 832                 {
 833                         chan->master_vol -= host_realframetime * ambient_fade.value;
 834                         if (chan->master_vol < vol)
 835                                 chan->master_vol = vol;
 836                 }
 837
 838                 chan->leftvol = chan->rightvol = chan->master_vol;
 839         }
 840 }
 841
 842
 843 /*
 844 ============
 845 S_Update
 846
 847 Called once each time through the main loop
 848 ============
 849 */
 850 void S_Update(vec3_t origin, vec3_t forward, vec3_t left, vec3_t up)
 851 {
 852         unsigned int i, j, total;
 853         channel_t *ch, *combine;
 854
 855         if (!snd_initialized.integer || (snd_blocked > 0))
 856                 return;
 857
 858         VectorCopy(origin, listener_vieworigin);
 859         VectorCopy(forward, listener_viewforward);
 860         VectorCopy(left, listener_viewleft);
 861         VectorCopy(up, listener_viewup);
 862
 863 // update general area ambient sound sources
 864         S_UpdateAmbientSounds ();
 865
 866         combine = NULL;
 867
 868 // update spatialization for static and dynamic sounds
 869         ch = channels+NUM_AMBIENTS;
 870         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
 871         {
 872                 if (!ch->sfx)
 873                         continue;
 874                 SND_Spatialize(ch, i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS);         // respatialize channel
 875                 if (!ch->leftvol && !ch->rightvol)
 876                         continue;
 877
 878         // try to combine static sounds with a previous channel of the same
 879         // sound effect so we don't mix five torches every frame
 880
 881                 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
 882                 {
 883                 // see if it can just use the last one
 884                         if (combine && combine->sfx == ch->sfx)
 885                         {
 886                                 combine->leftvol += ch->leftvol;
 887                                 combine->rightvol += ch->rightvol;
 888                                 ch->leftvol = ch->rightvol = 0;
 889                                 continue;
 890                         }
 891                 // search for one
 892                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
 893                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
 894                                 if (combine->sfx == ch->sfx)
 895                                         break;
 896
 897                         if (j == total_channels)
 898                                 combine = NULL;
 899                         else
 900                         {
 901                                 if (combine != ch)
 902                                 {
 903                                         combine->leftvol += ch->leftvol;
 904                                         combine->rightvol += ch->rightvol;
 905                                         ch->leftvol = ch->rightvol = 0;
 906                                 }
 907                                 continue;
 908                         }
 909                 }
 910         }
 911
 912 //
 913 // debugging output
 914 //
 915         if (snd_show.integer)
 916         {
 917                 total = 0;
 918                 ch = channels;
 919                 for (i=0 ; i<total_channels; i++, ch++)
 920                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
 921                                 total++;
 922
 923                 Con_Printf("----(%u)----\n", total);
 924         }
 925
 926 // mix some sound
 927         S_Update_();
 928 }
 929
 930 void GetSoundtime(void)
 931 {
 932         int             samplepos;
 933         static  int             buffers;
 934         static  int             oldsamplepos;
 935         int             fullsamples;
 936
 937         fullsamples = shm->samples / shm->format.channels;
 938
 939 // it is possible to miscount buffers if it has wrapped twice between
 940 // calls to S_Update.  Oh well.
 941         samplepos = SNDDMA_GetDMAPos();
 942
 943         if (samplepos < oldsamplepos)
 944         {
 945                 buffers++;                                      // buffer wrapped
 946
 947                 if (paintedtime > 0x40000000)
 948                 {       // time to chop things off to avoid 32 bit limits
 949                         buffers = 0;
 950                         paintedtime = fullsamples;
 951                         S_StopAllSounds (true);
 952                 }
 953         }
 954         oldsamplepos = samplepos;
 955
 956         soundtime = buffers * fullsamples + samplepos / shm->format.channels;
 957 }
 958
 959 void IN_Accumulate (void);
 960
 961 void S_ExtraUpdate (void)
 962 {
 963
 964 #ifdef _WIN32
 965         IN_Accumulate ();
 966 #endif
 967
 968         if (snd_noextraupdate.integer)
 969                 return;         // don't pollute timings
 970         S_Update_();
 971 }
 972
 973 void S_Update_(void)
 974 {
 975         unsigned        endtime;
 976         int                             samps;
 977
 978         if (!sound_started || (snd_blocked > 0))
 979                 return;
 980
 981 // Updates DMA time
 982         GetSoundtime();
 983
 984 // check to make sure that we haven't overshot
 985         if (paintedtime < soundtime)
 986                 paintedtime = soundtime;
 987
 988 // mix ahead of current position
 989         endtime = soundtime + _snd_mixahead.value * shm->format.speed;
 990         samps = shm->samples >> (shm->format.channels - 1);
 991         if (endtime > (unsigned int)(soundtime + samps))
 992                 endtime = soundtime + samps;
 993
 994 #ifdef _WIN32
 995 // if the buffer was lost or stopped, restore it and/or restart it
 996         {
 997                 DWORD   dwStatus;
 998
 999                 if (pDSBuf)
1000                 {
1001                         if (pDSBuf->lpVtbl->GetStatus (pDSBuf, &dwStatus) != DS_OK)
1002                                 Con_Print("Couldn't get sound buffer status\n");
1003
1004                         if (dwStatus & DSBSTATUS_BUFFERLOST)
1005                                 pDSBuf->lpVtbl->Restore (pDSBuf);
1006
1007                         if (!(dwStatus & DSBSTATUS_PLAYING))
1008                                 pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
1009                 }
1010         }
1011 #endif
1012
1013         S_PaintChannels (endtime);
1014
1015         SNDDMA_Submit ();
1016 }
1017
1018 /*
1019 ===============================================================================
1020
1021 console functions
1022
1023 ===============================================================================
1024 */
1025
1026 static void S_Play_Common(float fvol, float attenuation)
1027 {
1028         int     i, ch_ind;
1029         char name[256];
1030         sfx_t   *sfx;
1031
1032         i = 1;
1033         while (i<Cmd_Argc())
1034         {
1035                 if (!strrchr(Cmd_Argv(i), '.'))
1036                         snprintf(name, sizeof(name), "%s.wav", Cmd_Argv(i));
1037                 else
1038                         strlcpy(name, Cmd_Argv(i), sizeof(name));
1039                 sfx = S_PrecacheSound(name, true, true);
1040
1041                 // If we need to get the volume from the command line
1042                 if (fvol == -1.0f)
1043                 {
1044                         fvol = atof(Cmd_Argv(i+1));
1045                         i += 2;
1046                 }
1047                 else
1048                         i++;
1049
1050                 ch_ind = S_StartSound(-1, 0, sfx, listener_vieworigin, fvol, attenuation);
1051                 if (ch_ind >= 0)
1052                         channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1053         }
1054 }
1055
1056 void S_Play(void)
1057 {
1058         S_Play_Common (1.0f, 1.0f);
1059 }
1060
1061 void S_Play2(void)
1062 {
1063         S_Play_Common (1.0f, 0.0f);
1064 }
1065
1066 void S_PlayVol(void)
1067 {
1068         S_Play_Common (-1.0f, 0.0f);
1069 }
1070
1071 void S_SoundList(void)
1072 {
1073         int             i;
1074         sfx_t   *sfx;
1075         int             size, total;
1076
1077         total = 0;
1078         for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
1079         {
1080                 if (sfx->fetcher != NULL)
1081                 {
1082                         size = sfx->mempool->totalsize;
1083                         total += size;
1084                         Con_Printf ("%c%c(%2db, %6s) %8i : %s\n",
1085                                                 (sfx->loopstart >= 0) ? 'L' : ' ',
1086                                                 (sfx->flags & SFXFLAG_STREAMED) ? 'S' : ' ',
1087                                                 sfx->format.width * 8,
1088                                                 (sfx->format.channels == 2) ? "stereo" : "mono",
1089                                                 size,
1090                                                 sfx->name);
1091                 }
1092         }
1093         Con_Printf("Total resident: %i\n", total);
1094 }
1095
1096
1097 void S_LocalSound (const char *sound, qboolean stdpath)
1098 {
1099         sfx_t   *sfx;
1100         int             ch_ind;
1101
1102         if (!snd_initialized.integer || nosound.integer)
1103                 return;
1104
1105         sfx = S_PrecacheSound (sound, true, stdpath);
1106         if (!sfx)
1107         {
1108                 Con_Printf("S_LocalSound: can't precache %s\n", sound);
1109                 return;
1110         }
1111
1112         ch_ind = S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1);
1113         if (ch_ind >= 0)
1114                 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1115 }
1116
1117
1118 #define RAWSAMPLESBUFFER 32768
1119 short s_rawsamplesbuffer[RAWSAMPLESBUFFER * 2];
1120 int s_rawsamplesbuffer_start;
1121 size_t s_rawsamplesbuffer_count;
1122
1123 void S_RawSamples_Enqueue(short *samples, unsigned int length)
1124 {
1125         int b2, b3;
1126         //Con_Printf("S_RawSamples_Enqueue: %i samples\n", length);
1127         if (s_rawsamplesbuffer_count + length > RAWSAMPLESBUFFER)
1128                 return;
1129         b2 = (s_rawsamplesbuffer_start + s_rawsamplesbuffer_count) % RAWSAMPLESBUFFER;
1130         if (b2 + length > RAWSAMPLESBUFFER)
1131         {
1132                 b3 = (b2 + length) % RAWSAMPLESBUFFER;
1133                 memcpy(s_rawsamplesbuffer + b2 * 2, samples, (RAWSAMPLESBUFFER - b2) * sizeof(short[2]));
1134                 memcpy(s_rawsamplesbuffer, samples + (RAWSAMPLESBUFFER - b2) * 2, b3 * sizeof(short[2]));
1135         }
1136         else
1137                 memcpy(s_rawsamplesbuffer + b2 * 2, samples, length * sizeof(short[2]));
1138         s_rawsamplesbuffer_count += length;
1139 }
1140
1141 void S_RawSamples_Dequeue(int *samples, unsigned int length)
1142 {
1143         int b1, b2;
1144         size_t l;
1145         int i;
1146         short *in;
1147         int *out;
1148         int count;
1149         l = length;
1150         if (l > s_rawsamplesbuffer_count)
1151                 l = s_rawsamplesbuffer_count;
1152         b1 = (s_rawsamplesbuffer_start) % RAWSAMPLESBUFFER;
1153         if (b1 + l > RAWSAMPLESBUFFER)
1154         {
1155                 b2 = (b1 + l) % RAWSAMPLESBUFFER;
1156                 //memcpy(samples, s_rawsamplesbuffer + b1 * 2, (RAWSAMPLESBUFFER - b1) * sizeof(short[2]));
1157                 //memcpy(samples + (RAWSAMPLESBUFFER - b1) * 2, s_rawsamplesbuffer, b2 * sizeof(short[2]));
1158                 for (out = samples, in = s_rawsamplesbuffer + b1 * 2, count = (RAWSAMPLESBUFFER - b1) * 2, i = 0;i < count;i++)
1159                         out[i] = in[i];
1160                 for (out = samples + (RAWSAMPLESBUFFER - b1) * 2, in = s_rawsamplesbuffer, count = b2 * 2, i = 0;i < count;i++)
1161                         out[i] = in[i];
1162                 //Con_Printf("S_RawSamples_Dequeue: buffer wrap %i %i\n", (RAWSAMPLESBUFFER - b1), b2);
1163         }
1164         else
1165         {
1166                 //memcpy(samples, s_rawsamplesbuffer + b1 * 2, l * sizeof(short[2]));
1167                 for (out = samples, in = s_rawsamplesbuffer + b1 * 2, count = l * 2, i = 0;i < count;i++)
1168                         out[i] = in[i];
1169                 //Con_Printf("S_RawSamples_Dequeue: normal      %i\n", l);
1170         }
1171         if (l < (int)length)
1172         {
1173                 memset(samples + l * 2, 0, (length - l) * sizeof(int[2]));
1174                 //Con_Printf("S_RawSamples_Dequeue: padding with %i samples\n", length - l);
1175         }
1176         s_rawsamplesbuffer_start = (s_rawsamplesbuffer_start + l) % RAWSAMPLESBUFFER;
1177         s_rawsamplesbuffer_count -= l;
1178 }
1179
1180 void S_RawSamples_ClearQueue(void)
1181 {
1182         s_rawsamplesbuffer_count = 0;
1183         s_rawsamplesbuffer_start = 0;
1184 }
1185
1186 int S_RawSamples_QueueWantsMore(void)
1187 {
1188         if (shm != NULL && s_rawsamplesbuffer_count < min(shm->format.speed >> 1, RAWSAMPLESBUFFER >> 1))
1189                 return RAWSAMPLESBUFFER - s_rawsamplesbuffer_count;
1190         else
1191                 return 0;
1192 }
1193
1194 void S_ResampleBuffer16Stereo(short *input, int inputlength, short *output, int outputlength)
1195 {
1196         if (inputlength != outputlength)
1197         {
1198                 int i, position, stopposition, step;
1199                 short *in, *out;
1200                 step = (float) inputlength * 256.0f / (float) outputlength;
1201                 position = 0;
1202                 stopposition = (inputlength - 1) << 8;
1203                 out = output;
1204                 for (i = 0;i < outputlength && position < stopposition;i++, position += step)
1205                 {
1206                         in = input + ((position >> 8) << 1);
1207                         out[0] = (((in[1] - in[0]) * (position & 255)) >> 8) + in[0];
1208                         out[1] = (((in[3] - in[2]) * (position & 255)) >> 8) + in[2];
1209                         out += 2;
1210                 }
1211                 stopposition = inputlength << 8;
1212                 for (i = 0;i < outputlength && position < stopposition;i++, position += step)
1213                 {
1214                         in = input + ((position >> 8) << 1);
1215                         out[0] = in[0];
1216                         out[1] = in[2];
1217                         out += 2;
1218                 }
1219         }
1220         else
1221                 memcpy(output, input, inputlength * sizeof(short[2]));
1222 }
1223
1224 int S_RawSamples_SampleRate(void)
1225 {
1226         return shm != NULL ? shm->format.speed : 0;
1227 }
1228