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 USE_DSOUND
  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_origin;
  62 matrix4x4_t listener_matrix;
  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_SoundInfo_f(void)
 111 {
 112         if (!sound_started || !shm)
 113         {
 114                 Con_Print("sound system not started\n");
 115                 return;
 116         }
 117
 118         Con_Printf("%5d stereo\n", shm->format.channels - 1);
 119         Con_Printf("%5d samples\n", shm->samples);
 120         Con_Printf("%5d samplepos\n", shm->samplepos);
 121         Con_Printf("%5d samplebits\n", shm->format.width * 8);
 122         Con_Printf("%5d speed\n", shm->format.speed);
 123         Con_Printf("%p dma buffer\n", shm->buffer);
 124         Con_Printf("%5u total_channels\n", total_channels);
 125 }
 126
 127 void S_UnloadSounds(void)
 128 {
 129         int i;
 130         for (i = 0;i < num_sfx;i++)
 131                 S_UnloadSound(known_sfx + i);
 132 }
 133
 134 void S_LoadSounds(void)
 135 {
 136         int i;
 137         for (i = 0;i < num_sfx;i++)
 138                 S_LoadSound(known_sfx + i, false);
 139 }
 140
 141 void S_Startup(void)
 142 {
 143         if (!snd_initialized.integer)
 144                 return;
 145
 146         shm = &sn;
 147         memset((void *)shm, 0, sizeof(*shm));
 148
 149 // create a piece of DMA memory
 150
 151         if (fakedma)
 152         {
 153                 shm->format.width = 2;
 154                 shm->format.speed = 22050;
 155                 shm->format.channels = 2;
 156                 shm->samples = 32768;
 157                 shm->samplepos = 0;
 158                 shm->buffer = Mem_Alloc(snd_mempool, shm->format.channels * shm->samples * shm->format.width);
 159         }
 160         else
 161         {
 162                 if (!SNDDMA_Init())
 163                 {
 164                         Con_Print("S_Startup: SNDDMA_Init failed.\n");
 165                         sound_started = 0;
 166                         shm = NULL;
 167                         return;
 168                 }
 169         }
 170
 171         sound_started = 1;
 172
 173         Con_DPrintf("Sound sampling rate: %i\n", shm->format.speed);
 174
 175         //S_LoadSounds();
 176
 177         S_StopAllSounds(true);
 178 }
 179
 180 void S_Shutdown(void)
 181 {
 182         if (!sound_started)
 183                 return;
 184
 185         //S_UnloadSounds();
 186
 187         if (fakedma)
 188                 Mem_Free(shm->buffer);
 189         else
 190                 SNDDMA_Shutdown();
 191
 192         shm = NULL;
 193         sound_started = 0;
 194 }
 195
 196 void S_Restart_f(void)
 197 {
 198         S_Shutdown();
 199         S_Startup();
 200 }
 201
 202 /*
 203 ================
 204 S_Init
 205 ================
 206 */
 207 void S_Init(void)
 208 {
 209         Con_DPrint("\nSound Initialization\n");
 210
 211         Cvar_RegisterVariable(&volume);
 212         Cvar_RegisterVariable(&bgmvolume);
 213         Cvar_RegisterVariable(&snd_staticvolume);
 214
 215         if (COM_CheckParm("-nosound") || COM_CheckParm("-safe"))
 216                 return;
 217
 218         snd_mempool = Mem_AllocPool("sound", 0, NULL);
 219
 220         if (COM_CheckParm("-simsound"))
 221                 fakedma = true;
 222
 223         Cmd_AddCommand("play", S_Play);
 224         Cmd_AddCommand("play2", S_Play2);
 225         Cmd_AddCommand("playvol", S_PlayVol);
 226         Cmd_AddCommand("stopsound", S_StopAllSoundsC);
 227         Cmd_AddCommand("soundlist", S_SoundList);
 228         Cmd_AddCommand("soundinfo", S_SoundInfo_f);
 229         Cmd_AddCommand("snd_restart", S_Restart_f);
 230
 231         Cvar_RegisterVariable(&nosound);
 232         Cvar_RegisterVariable(&snd_precache);
 233         Cvar_RegisterVariable(&snd_initialized);
 234         Cvar_RegisterVariable(&snd_streaming);
 235         Cvar_RegisterVariable(&bgmbuffer);
 236         Cvar_RegisterVariable(&ambient_level);
 237         Cvar_RegisterVariable(&ambient_fade);
 238         Cvar_RegisterVariable(&snd_noextraupdate);
 239         Cvar_RegisterVariable(&snd_show);
 240         Cvar_RegisterVariable(&_snd_mixahead);
 241         Cvar_RegisterVariable(&snd_swapstereo); // LordHavoc: for people with backwards sound wiring
 242
 243         Cvar_SetValueQuick(&snd_initialized, true);
 244
 245         known_sfx = Mem_Alloc(snd_mempool, MAX_SFX*sizeof(sfx_t));
 246         num_sfx = 0;
 247
 248         SND_InitScaletable ();
 249
 250         ambient_sfx[AMBIENT_WATER] = S_PrecacheSound ("ambience/water1.wav", false, true);
 251         ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav", false, true);
 252
 253         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 254         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 255
 256         OGG_OpenLibrary ();
 257 }
 258
 259
 260 // =======================================================================
 261 // Load a sound
 262 // =======================================================================
 263
 264 /*
 265 =========
 266 S_GetCached
 267
 268 =========
 269 */
 270 sfx_t *S_GetCached (const char *name, qboolean stdpath)
 271 {
 272         char namebuffer [MAX_QPATH];
 273         size_t len;
 274         int i;
 275
 276         if (!snd_initialized.integer)
 277                 return NULL;
 278
 279         if (!name)
 280                 Host_Error("S_GetCached: NULL");
 281
 282         // Add the default sound directory to the path
 283         len = snprintf (namebuffer, sizeof (namebuffer), stdpath ? "sound/%s" : "%s", name);
 284         if (len >= sizeof (namebuffer))
 285                 Host_Error ("S_GetCached: sound name too long (%s)", name);
 286
 287         for(i = 0;i < num_sfx;i++)
 288                 if(!strcmp(known_sfx[i].name, namebuffer))
 289                         return &known_sfx[i];
 290
 291         return NULL;
 292 }
 293
 294 /*
 295 ==================
 296 S_FindName
 297
 298 ==================
 299 */
 300 sfx_t *S_FindName (const char *name, qboolean stdpath)
 301 {
 302         sfx_t *sfx;
 303
 304         if (!snd_initialized.integer)
 305                 return NULL;
 306
 307         sfx = S_GetCached (name, stdpath);
 308
 309         // If we haven't allocated a sfx_t struct for it yet
 310         if (sfx == NULL)
 311         {
 312                 if (num_sfx == MAX_SFX)
 313                         Sys_Error ("S_FindName: out of sfx_t");
 314
 315                 sfx = &known_sfx[num_sfx++];
 316                 memset (sfx, 0, sizeof(*sfx));
 317                 snprintf (sfx->name, sizeof (sfx->name), stdpath ? "sound/%s" : "%s", name);
 318         }
 319         return sfx;
 320 }
 321
 322
 323 /*
 324 ==================
 325 S_TouchSound
 326
 327 ==================
 328 */
 329 void S_TouchSound (const char *name, qboolean stdpath)
 330 {
 331         sfx_t *sfx;
 332
 333         sfx = S_FindName (name, stdpath);
 334
 335         // Set the "used" flag for this sound
 336         if (sfx != NULL)
 337                 sfx->flags |= SFXFLAG_USED;
 338 }
 339
 340
 341 /*
 342 ==================
 343 S_ClearUsed
 344
 345 Reset the "used" flag of all precached sounds
 346 ==================
 347 */
 348 void S_ClearUsed (void)
 349 {
 350         int i;
 351
 352         for (i = 0; i < num_sfx; i++)
 353                 known_sfx[i].flags &= ~SFXFLAG_USED;
 354 }
 355
 356
 357 /*
 358 ==================
 359 S_PurgeUnused
 360
 361 Free all precached sounds without the "used" flag
 362 ==================
 363 */
 364 void S_PurgeUnused (void)
 365 {
 366         int i;
 367         sfx_t *sfx;
 368
 369         for (i = 0; i < num_sfx; i++)
 370         {
 371                 sfx = &known_sfx[i];
 372                 if (! (sfx->flags & SFXFLAG_USED))
 373                         S_UnloadSound (sfx);
 374         }
 375 }
 376
 377
 378 /*
 379 ==================
 380 S_PrecacheSound
 381
 382 ==================
 383 */
 384 sfx_t *S_PrecacheSound (const char *name, qboolean complain, qboolean stdpath)
 385 {
 386         sfx_t *sfx;
 387
 388         if (!snd_initialized.integer)
 389                 return NULL;
 390
 391         sfx = S_FindName (name, stdpath);
 392
 393         if (!nosound.integer && snd_precache.integer)
 394                 S_LoadSound(sfx, complain);
 395
 396         return sfx;
 397 }
 398
 399
 400 //=============================================================================
 401
 402 /*
 403 =================
 404 SND_PickChannel
 405
 406 Picks a channel based on priorities, empty slots, number of channels
 407 =================
 408 */
 409 channel_t *SND_PickChannel(int entnum, int entchannel)
 410 {
 411         int ch_idx;
 412         int first_to_die;
 413         int life_left;
 414         channel_t* ch;
 415
 416 // Check for replacement sound, or find the best one to replace
 417         first_to_die = -1;
 418         life_left = 0x7fffffff;
 419         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
 420         {
 421                 ch = &channels[ch_idx];
 422                 if (entchannel != 0             // channel 0 never overrides
 423                 && ch->entnum == entnum
 424                 && (ch->entchannel == entchannel || entchannel == -1) )
 425                 {       // always override sound from same entity
 426                         first_to_die = ch_idx;
 427                         break;
 428                 }
 429
 430                 // don't let monster sounds override player sounds
 431                 if (ch->entnum == cl.viewentity && entnum != cl.viewentity && ch->sfx)
 432                         continue;
 433
 434                 // don't override looped sounds
 435                 if ((ch->flags & CHANNELFLAG_FORCELOOP) != 0 ||
 436                         (ch->sfx != NULL && ch->sfx->loopstart >= 0))
 437                         continue;
 438
 439                 if (ch->end - paintedtime < life_left)
 440                 {
 441                         life_left = ch->end - paintedtime;
 442                         first_to_die = ch_idx;
 443                 }
 444         }
 445
 446         if (first_to_die == -1)
 447                 return NULL;
 448
 449         if (channels[first_to_die].sfx)
 450                 channels[first_to_die].sfx = NULL;
 451
 452         return &channels[first_to_die];
 453 }
 454
 455 /*
 456 =================
 457 SND_Spatialize
 458
 459 Spatializes a channel
 460 =================
 461 */
 462 void SND_Spatialize(channel_t *ch, int isstatic)
 463 {
 464         vec_t dist, scale, pan;
 465         vec3_t source_vec;
 466
 467         // anything coming from the view entity will always be full volume
 468         // LordHavoc: make sounds with ATTN_NONE have no spatialization
 469         if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
 470         {
 471                 ch->leftvol = ch->master_vol;
 472                 ch->rightvol = ch->master_vol;
 473         }
 474         else
 475         {
 476                 // update sound origin if we know about the entity
 477                 if (ch->entnum > 0 && cls.state == ca_connected && cl_entities[ch->entnum].state_current.active)
 478                 {
 479                         //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]);
 480                         VectorCopy(cl_entities[ch->entnum].state_current.origin, ch->origin);
 481                         if (cl_entities[ch->entnum].state_current.modelindex && cl.model_precache[cl_entities[ch->entnum].state_current.modelindex]->soundfromcenter)
 482                                 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);
 483                 }
 484
 485                 // calculate stereo seperation and distance attenuation
 486                 Matrix4x4_Transform(&listener_matrix, ch->origin, source_vec);
 487                 dist = VectorNormalizeLength(source_vec);
 488                 // distance
 489                 scale = ch->master_vol * (1.0 - (dist * ch->dist_mult));
 490                 // panning
 491                 pan = scale * source_vec[1];
 492                 // calculate the volumes
 493                 ch->leftvol = (int) (scale + pan);
 494                 ch->rightvol = (int) (scale - pan);
 495         }
 496
 497         // LordHavoc: allow adjusting volume of static sounds
 498         if (isstatic)
 499         {
 500                 ch->leftvol *= snd_staticvolume.value;
 501                 ch->rightvol *= snd_staticvolume.value;
 502         }
 503
 504         // clamp volumes
 505         ch->leftvol = bound(0, ch->leftvol, 255);
 506         ch->rightvol = bound(0, ch->rightvol, 255);
 507 }
 508
 509
 510 // =======================================================================
 511 // Start a sound effect
 512 // =======================================================================
 513
 514 int S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 515 {
 516         channel_t *target_chan, *check;
 517         int             vol;
 518         int             ch_idx;
 519         size_t  skip;
 520
 521         if (!sound_started || !sfx || !sfx->fetcher || nosound.integer)
 522                 return -1;
 523
 524         vol = fvol*255;
 525
 526 // pick a channel to play on
 527         target_chan = SND_PickChannel(entnum, entchannel);
 528         if (!target_chan)
 529                 return -1;
 530
 531 // spatialize
 532         memset (target_chan, 0, sizeof(*target_chan));
 533         VectorCopy(origin, target_chan->origin);
 534         target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
 535         target_chan->master_vol = vol;
 536         target_chan->entnum = entnum;
 537         target_chan->entchannel = entchannel;
 538         SND_Spatialize(target_chan, false);
 539
 540         // LordHavoc: spawn the sound anyway because the player might teleport to it
 541         //if (!target_chan->leftvol && !target_chan->rightvol)
 542         //      return;         // not audible at all
 543
 544         // new channel
 545         if (!S_LoadSound (sfx, true))
 546         {
 547                 target_chan->sfx = NULL;
 548                 return -1;              // couldn't load the sound's data
 549         }
 550
 551         target_chan->sfx = sfx;
 552         target_chan->flags = CHANNELFLAG_NONE;
 553         target_chan->pos = 0.0;
 554         target_chan->end = paintedtime + sfx->total_length;
 555         target_chan->lastptime = paintedtime;
 556
 557 // if an identical sound has also been started this frame, offset the pos
 558 // a bit to keep it from just making the first one louder
 559         check = &channels[NUM_AMBIENTS];
 560         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
 561         {
 562                 if (check == target_chan)
 563                         continue;
 564                 if (check->sfx == sfx && !check->pos)
 565                 {
 566                         // LordHavoc: fixed skip calculations
 567                         skip = 0.1 * sfx->format.speed;
 568                         if (skip > sfx->total_length)
 569                                 skip = sfx->total_length;
 570                         if (skip > 0)
 571                                 skip = rand() % skip;
 572                         target_chan->pos += skip;
 573                         target_chan->end -= skip;
 574                         break;
 575                 }
 576         }
 577
 578         return (target_chan - channels);
 579 }
 580
 581 void S_StopChannel (unsigned int channel_ind)
 582 {
 583         channel_t *ch;
 584
 585         if (channel_ind >= total_channels)
 586                 return;
 587
 588         ch = &channels[channel_ind];
 589         if (ch->sfx != NULL)
 590         {
 591                 if (ch->sfx->fetcher != NULL)
 592                 {
 593                         snd_fetcher_end_t fetcher_end = ch->sfx->fetcher->end;
 594                         if (fetcher_end != NULL)
 595                                 fetcher_end (ch);
 596                 }
 597                 ch->sfx = NULL;
 598         }
 599         ch->end = 0;
 600 }
 601
 602 void S_PauseChannel (unsigned int channel_ind, qboolean toggle)
 603 {
 604         if (toggle)
 605                 channels[channel_ind].flags |= CHANNELFLAG_PAUSED;
 606         else
 607                 channels[channel_ind].flags &= ~CHANNELFLAG_PAUSED;
 608 }
 609
 610 void S_LoopChannel (unsigned int channel_ind, qboolean toggle)
 611 {
 612         if (toggle)
 613                 channels[channel_ind].flags |= CHANNELFLAG_FORCELOOP;
 614         else
 615                 channels[channel_ind].flags &= ~CHANNELFLAG_FORCELOOP;
 616 }
 617
 618 void S_StopSound(int entnum, int entchannel)
 619 {
 620         unsigned int i;
 621
 622         for (i = 0; i < MAX_DYNAMIC_CHANNELS; i++)
 623                 if (channels[i].entnum == entnum && channels[i].entchannel == entchannel)
 624                 {
 625                         S_StopChannel (i);
 626                         return;
 627                 }
 628 }
 629
 630 void S_StopAllSounds(qboolean clear)
 631 {
 632         unsigned int i;
 633
 634         for (i = 0; i < total_channels; i++)
 635                 S_StopChannel (i);
 636
 637         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 638         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 639
 640         if (clear)
 641                 S_ClearBuffer();
 642 }
 643
 644 void S_StopAllSoundsC(void)
 645 {
 646         S_StopAllSounds(true);
 647 }
 648
 649 void S_PauseGameSounds (void)
 650 {
 651         unsigned int i;
 652
 653         for (i = 0; i < total_channels; i++)
 654         {
 655                 channel_t *ch;
 656
 657                 ch = &channels[i];
 658                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 659                         ch->flags |= CHANNELFLAG_PAUSED;
 660         }
 661 }
 662
 663 void S_ResumeGameSounds (void)
 664 {
 665         unsigned int i;
 666
 667         for (i = 0; i < total_channels; i++)
 668         {
 669                 channel_t *ch;
 670
 671                 ch = &channels[i];
 672                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 673                         ch->flags &= ~CHANNELFLAG_PAUSED;
 674         }
 675 }
 676
 677 void S_SetChannelVolume (unsigned int ch_ind, float fvol)
 678 {
 679         channels[ch_ind].master_vol = fvol * 255;
 680 }
 681
 682
 683 void S_ClearBuffer(void)
 684 {
 685         int             clear;
 686
 687         if (!sound_started || !shm)
 688                 return;
 689
 690         if (shm->format.width == 1)
 691                 clear = 0x80;
 692         else
 693                 clear = 0;
 694
 695 #ifdef USE_DSOUND
 696         if (pDSBuf)
 697         {
 698                 DWORD   dwSize;
 699                 DWORD   *pData;
 700                 int             reps;
 701                 HRESULT hresult;
 702
 703                 reps = 0;
 704
 705                 while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, (LPVOID*)&pData, &dwSize, NULL, NULL, 0)) != DS_OK)
 706                 {
 707                         if (hresult != DSERR_BUFFERLOST)
 708                         {
 709                                 Con_Print("S_ClearBuffer: DS::Lock Sound Buffer Failed\n");
 710                                 S_Shutdown ();
 711                                 return;
 712                         }
 713
 714                         if (++reps > 10000)
 715                         {
 716                                 Con_Print("S_ClearBuffer: DS: couldn't restore buffer\n");
 717                                 S_Shutdown ();
 718                                 return;
 719                         }
 720                 }
 721
 722                 memset(pData, clear, shm->samples * shm->format.width);
 723
 724                 pDSBuf->lpVtbl->Unlock(pDSBuf, pData, dwSize, NULL, 0);
 725
 726         }
 727         else
 728 #endif
 729         if (shm->buffer)
 730         {
 731                 int             setsize = shm->samples * shm->format.width;
 732                 char    *buf = shm->buffer;
 733
 734                 while (setsize--)
 735                         *buf++ = clear;
 736
 737 // on i586/i686 optimized versions of glibc, glibc *wrongly* IMO,
 738 // reads the memory area before writing to it causing a seg fault
 739 // since the memory is PROT_WRITE only and not PROT_READ|PROT_WRITE
 740 //              memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
 741         }
 742 }
 743
 744
 745 /*
 746 =================
 747 S_StaticSound
 748 =================
 749 */
 750 void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
 751 {
 752         channel_t       *ss;
 753
 754         if (!sfx)
 755                 return;
 756
 757         if (total_channels == MAX_CHANNELS)
 758         {
 759                 Con_Print("total_channels == MAX_CHANNELS\n");
 760                 return;
 761         }
 762
 763         if (!S_LoadSound (sfx, true))
 764                 return;
 765
 766         if (sfx->loopstart == -1)
 767                 Con_DPrintf("Quake compatibility warning: Static sound \"%s\" is not looped\n", sfx->name);
 768
 769         ss = &channels[total_channels++];
 770         memset(ss, 0, sizeof(*ss));
 771         ss->flags = CHANNELFLAG_FORCELOOP;
 772         ss->sfx = sfx;
 773         VectorCopy (origin, ss->origin);
 774         ss->master_vol = vol;
 775         ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
 776         ss->end = paintedtime + sfx->total_length;
 777         ss->lastptime = paintedtime;
 778
 779         SND_Spatialize (ss, true);
 780 }
 781
 782
 783 //=============================================================================
 784
 785 /*
 786 ===================
 787 S_UpdateAmbientSounds
 788 ===================
 789 */
 790 void S_UpdateAmbientSounds (void)
 791 {
 792         float           vol;
 793         int                     ambient_channel;
 794         channel_t       *chan;
 795         qbyte           ambientlevels[NUM_AMBIENTS];
 796
 797         // LordHavoc: kill ambient sounds until proven otherwise
 798         for (ambient_channel = 0 ; ambient_channel < NUM_AMBIENTS;ambient_channel++)
 799                 channels[ambient_channel].sfx = NULL;
 800
 801         if (ambient_level.value <= 0 || !cl.worldmodel || !cl.worldmodel->brush.AmbientSoundLevelsForPoint)
 802                 return;
 803
 804         cl.worldmodel->brush.AmbientSoundLevelsForPoint(cl.worldmodel, listener_origin, ambientlevels, sizeof(ambientlevels));
 805
 806 // calc ambient sound levels
 807         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 808         {
 809                 if (ambient_sfx[ambient_channel] &&
 810                         (ambient_sfx[ambient_channel]->flags & SFXFLAG_SILENTLYMISSING))
 811                         continue;
 812                 chan = &channels[ambient_channel];
 813                 chan->flags |= CHANNELFLAG_FORCELOOP;
 814                 chan->sfx = ambient_sfx[ambient_channel];
 815
 816                 vol = ambient_level.value * ambientlevels[ambient_channel];
 817                 if (vol < 8)
 818                         vol = 0;
 819
 820         // don't adjust volume too fast
 821                 if (chan->master_vol < vol)
 822                 {
 823                         chan->master_vol += host_realframetime * ambient_fade.value;
 824                         if (chan->master_vol > vol)
 825                                 chan->master_vol = vol;
 826                 }
 827                 else if (chan->master_vol > vol)
 828                 {
 829                         chan->master_vol -= host_realframetime * ambient_fade.value;
 830                         if (chan->master_vol < vol)
 831                                 chan->master_vol = vol;
 832                 }
 833
 834                 chan->leftvol = chan->rightvol = chan->master_vol;
 835         }
 836 }
 837
 838
 839 /*
 840 ============
 841 S_Update
 842
 843 Called once each time through the main loop
 844 ============
 845 */
 846 void S_Update(const matrix4x4_t *listenermatrix)
 847 {
 848         unsigned int i, j, total;
 849         channel_t *ch, *combine;
 850
 851         if (!snd_initialized.integer || (snd_blocked > 0))
 852                 return;
 853
 854         Matrix4x4_Invert_Simple(&listener_matrix, listenermatrix);
 855         Matrix4x4_OriginFromMatrix(listenermatrix, listener_origin);
 856
 857 // update general area ambient sound sources
 858         S_UpdateAmbientSounds ();
 859
 860         combine = NULL;
 861
 862 // update spatialization for static and dynamic sounds
 863         ch = channels+NUM_AMBIENTS;
 864         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
 865         {
 866                 if (!ch->sfx)
 867                         continue;
 868                 SND_Spatialize(ch, i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS);         // respatialize channel
 869                 if (!ch->leftvol && !ch->rightvol)
 870                         continue;
 871
 872         // try to combine static sounds with a previous channel of the same
 873         // sound effect so we don't mix five torches every frame
 874
 875                 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
 876                 {
 877                 // see if it can just use the last one
 878                         if (combine && combine->sfx == ch->sfx)
 879                         {
 880                                 combine->leftvol += ch->leftvol;
 881                                 combine->rightvol += ch->rightvol;
 882                                 ch->leftvol = ch->rightvol = 0;
 883                                 continue;
 884                         }
 885                 // search for one
 886                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
 887                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
 888                                 if (combine->sfx == ch->sfx)
 889                                         break;
 890
 891                         if (j == total_channels)
 892                                 combine = NULL;
 893                         else
 894                         {
 895                                 if (combine != ch)
 896                                 {
 897                                         combine->leftvol += ch->leftvol;
 898                                         combine->rightvol += ch->rightvol;
 899                                         ch->leftvol = ch->rightvol = 0;
 900                                 }
 901                                 continue;
 902                         }
 903                 }
 904         }
 905
 906 //
 907 // debugging output
 908 //
 909         if (snd_show.integer)
 910         {
 911                 total = 0;
 912                 ch = channels;
 913                 for (i=0 ; i<total_channels; i++, ch++)
 914                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
 915                                 total++;
 916
 917                 Con_Printf("----(%u)----\n", total);
 918         }
 919
 920 // mix some sound
 921         S_Update_();
 922 }
 923
 924 void GetSoundtime(void)
 925 {
 926         int             samplepos;
 927         static  int             buffers;
 928         static  int             oldsamplepos;
 929         int             fullsamples;
 930
 931         fullsamples = shm->samples / shm->format.channels;
 932
 933 // it is possible to miscount buffers if it has wrapped twice between
 934 // calls to S_Update.  Oh well.
 935         samplepos = SNDDMA_GetDMAPos();
 936
 937         if (samplepos < oldsamplepos)
 938         {
 939                 buffers++;                                      // buffer wrapped
 940
 941                 if (paintedtime > 0x40000000)
 942                 {       // time to chop things off to avoid 32 bit limits
 943                         buffers = 0;
 944                         paintedtime = fullsamples;
 945                         S_StopAllSounds (true);
 946                 }
 947         }
 948         oldsamplepos = samplepos;
 949
 950         soundtime = buffers * fullsamples + samplepos / shm->format.channels;
 951 }
 952
 953 void IN_Accumulate (void);
 954
 955 void S_ExtraUpdate (void)
 956 {
 957
 958 #ifdef USE_DSOUND
 959         IN_Accumulate ();
 960 #endif
 961
 962         if (snd_noextraupdate.integer)
 963                 return;         // don't pollute timings
 964         S_Update_();
 965 }
 966
 967 void S_Update_(void)
 968 {
 969         unsigned        endtime;
 970         int                             samps;
 971
 972         if (!sound_started || (snd_blocked > 0))
 973                 return;
 974
 975 // Updates DMA time
 976         GetSoundtime();
 977
 978 // check to make sure that we haven't overshot
 979         if (paintedtime < soundtime)
 980                 paintedtime = soundtime;
 981
 982 // mix ahead of current position
 983         endtime = soundtime + _snd_mixahead.value * shm->format.speed;
 984         samps = shm->samples >> (shm->format.channels - 1);
 985         if (endtime > (unsigned int)(soundtime + samps))
 986                 endtime = soundtime + samps;
 987
 988 #ifdef USE_DSOUND
 989 // if the buffer was lost or stopped, restore it and/or restart it
 990         {
 991                 DWORD   dwStatus;
 992
 993                 if (pDSBuf)
 994                 {
 995                         if (pDSBuf->lpVtbl->GetStatus (pDSBuf, &dwStatus) != DS_OK)
 996                                 Con_Print("Couldn't get sound buffer status\n");
 997
 998                         if (dwStatus & DSBSTATUS_BUFFERLOST)
 999                                 pDSBuf->lpVtbl->Restore (pDSBuf);
1000
1001                         if (!(dwStatus & DSBSTATUS_PLAYING))
1002                                 pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
1003                 }
1004         }
1005 #endif
1006
1007         S_PaintChannels (endtime);
1008
1009         SNDDMA_Submit ();
1010 }
1011
1012 /*
1013 ===============================================================================
1014
1015 console functions
1016
1017 ===============================================================================
1018 */
1019
1020 static void S_Play_Common(float fvol, float attenuation)
1021 {
1022         int     i, ch_ind;
1023         char name[256];
1024         sfx_t   *sfx;
1025
1026         i = 1;
1027         while (i<Cmd_Argc())
1028         {
1029                 if (!strrchr(Cmd_Argv(i), '.'))
1030                         snprintf(name, sizeof(name), "%s.wav", Cmd_Argv(i));
1031                 else
1032                         strlcpy(name, Cmd_Argv(i), sizeof(name));
1033                 sfx = S_PrecacheSound(name, true, true);
1034
1035                 // If we need to get the volume from the command line
1036                 if (fvol == -1.0f)
1037                 {
1038                         fvol = atof(Cmd_Argv(i+1));
1039                         i += 2;
1040                 }
1041                 else
1042                         i++;
1043
1044                 ch_ind = S_StartSound(-1, 0, sfx, listener_origin, fvol, attenuation);
1045                 if (ch_ind >= 0)
1046                         channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1047         }
1048 }
1049
1050 void S_Play(void)
1051 {
1052         S_Play_Common (1.0f, 1.0f);
1053 }
1054
1055 void S_Play2(void)
1056 {
1057         S_Play_Common (1.0f, 0.0f);
1058 }
1059
1060 void S_PlayVol(void)
1061 {
1062         S_Play_Common (-1.0f, 0.0f);
1063 }
1064
1065 void S_SoundList(void)
1066 {
1067         int             i;
1068         sfx_t   *sfx;
1069         int             size, total;
1070
1071         total = 0;
1072         for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
1073         {
1074                 if (sfx->fetcher != NULL)
1075                 {
1076                         size = sfx->mempool->totalsize;
1077                         total += size;
1078                         Con_Printf ("%c%c(%2db, %6s) %8i : %s\n",
1079                                                 (sfx->loopstart >= 0) ? 'L' : ' ',
1080                                                 (sfx->flags & SFXFLAG_STREAMED) ? 'S' : ' ',
1081                                                 sfx->format.width * 8,
1082                                                 (sfx->format.channels == 2) ? "stereo" : "mono",
1083                                                 size,
1084                                                 sfx->name);
1085                 }
1086         }
1087         Con_Printf("Total resident: %i\n", total);
1088 }
1089
1090
1091 void S_LocalSound (const char *sound, qboolean stdpath)
1092 {
1093         sfx_t   *sfx;
1094         int             ch_ind;
1095
1096         if (!snd_initialized.integer || nosound.integer)
1097                 return;
1098
1099         sfx = S_PrecacheSound (sound, true, stdpath);
1100         if (!sfx)
1101         {
1102                 Con_Printf("S_LocalSound: can't precache %s\n", sound);
1103                 return;
1104         }
1105
1106         ch_ind = S_StartSound (cl.viewentity, 0, sfx, vec3_origin, 1, 1);
1107         if (ch_ind >= 0)
1108                 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1109 }