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);
 255         ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav", false);
 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)
 275 {
 276         int i;
 277
 278         if (!snd_initialized.integer)
 279                 return NULL;
 280
 281         if (!name)
 282                 Host_Error("S_IsCached: NULL\n");
 283
 284         if (strlen(name) >= MAX_QPATH)
 285                 Host_Error("Sound name too long: %s", name);
 286
 287         for(i = 0;i < num_sfx;i++)
 288                 if(!strcmp(known_sfx[i].name, name))
 289                         return &known_sfx[i];
 290
 291         return NULL;
 292 }
 293
 294 /*
 295 ==================
 296 S_FindName
 297
 298 ==================
 299 */
 300 sfx_t *S_FindName (char *name)
 301 {
 302         int i;
 303         sfx_t *sfx;
 304
 305         if (!snd_initialized.integer)
 306                 return NULL;
 307
 308         if (!name)
 309                 Host_Error("S_FindName: NULL\n");
 310
 311         if (strlen(name) >= MAX_QPATH)
 312                 Host_Error("Sound name too long: %s", name);
 313
 314 // see if already loaded
 315         for (i = 0;i < num_sfx;i++)
 316                 if (!strcmp(known_sfx[i].name, name))
 317                         return &known_sfx[i];
 318
 319         if (num_sfx == MAX_SFX)
 320                 Sys_Error("S_FindName: out of sfx_t");
 321
 322         sfx = &known_sfx[num_sfx++];
 323         memset(sfx, 0, sizeof(*sfx));
 324         strlcpy (sfx->name, name, sizeof (sfx->name));
 325         return sfx;
 326 }
 327
 328
 329 /*
 330 ==================
 331 S_TouchSound
 332
 333 ==================
 334 */
 335 void S_TouchSound (char *name)
 336 {
 337         sfx_t *sfx;
 338
 339         sfx = S_FindName (name);
 340
 341         // Set the "used" flag for this sound
 342         if (sfx != NULL)
 343                 sfx->flags |= SFXFLAG_USED;
 344 }
 345
 346
 347 /*
 348 ==================
 349 S_ClearUsed
 350
 351 Reset the "used" flag of all precached sounds
 352 ==================
 353 */
 354 void S_ClearUsed (void)
 355 {
 356         int i;
 357
 358         for (i = 0; i < num_sfx; i++)
 359                 known_sfx[i].flags &= ~SFXFLAG_USED;
 360 }
 361
 362
 363 /*
 364 ==================
 365 S_PurgeUnused
 366
 367 Free all precached sounds without the "used" flag
 368 ==================
 369 */
 370 void S_PurgeUnused (void)
 371 {
 372         int i;
 373         sfx_t *sfx;
 374
 375         for (i = 0; i < num_sfx; i++)
 376         {
 377                 sfx = &known_sfx[i];
 378                 if (! (sfx->flags & SFXFLAG_USED))
 379                         S_UnloadSound (sfx);
 380         }
 381 }
 382
 383
 384 /*
 385 ==================
 386 S_PrecacheSound
 387
 388 ==================
 389 */
 390 sfx_t *S_PrecacheSound (char *name, int complain)
 391 {
 392         sfx_t *sfx;
 393
 394         if (!snd_initialized.integer)
 395                 return NULL;
 396
 397         sfx = S_FindName(name);
 398
 399         if (!nosound.integer && snd_precache.integer)
 400                 S_LoadSound(sfx, complain);
 401
 402         return sfx;
 403 }
 404
 405
 406 //=============================================================================
 407
 408 /*
 409 =================
 410 SND_PickChannel
 411
 412 Picks a channel based on priorities, empty slots, number of channels
 413 =================
 414 */
 415 channel_t *SND_PickChannel(int entnum, int entchannel)
 416 {
 417         int ch_idx;
 418         int first_to_die;
 419         int life_left;
 420         channel_t* ch;
 421
 422 // Check for replacement sound, or find the best one to replace
 423         first_to_die = -1;
 424         life_left = 0x7fffffff;
 425         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
 426         {
 427                 ch = &channels[ch_idx];
 428                 if (entchannel != 0             // channel 0 never overrides
 429                 && ch->entnum == entnum
 430                 && (ch->entchannel == entchannel || entchannel == -1) )
 431                 {       // always override sound from same entity
 432                         first_to_die = ch_idx;
 433                         break;
 434                 }
 435
 436                 // don't let monster sounds override player sounds
 437                 if (ch->entnum == cl.viewentity && entnum != cl.viewentity && ch->sfx)
 438                         continue;
 439
 440                 // don't override looped sounds
 441                 if ((ch->flags & CHANNELFLAG_FORCELOOP) != 0 ||
 442                         (ch->sfx != NULL && ch->sfx->loopstart >= 0))
 443                         continue;
 444
 445                 if (ch->end - paintedtime < life_left)
 446                 {
 447                         life_left = ch->end - paintedtime;
 448                         first_to_die = ch_idx;
 449                 }
 450         }
 451
 452         if (first_to_die == -1)
 453                 return NULL;
 454
 455         if (channels[first_to_die].sfx)
 456                 channels[first_to_die].sfx = NULL;
 457
 458         return &channels[first_to_die];
 459 }
 460
 461 /*
 462 =================
 463 SND_Spatialize
 464
 465 Spatializes a channel
 466 =================
 467 */
 468 void SND_Spatialize(channel_t *ch, int isstatic)
 469 {
 470         vec_t dist, scale, pan;
 471         vec3_t source_vec;
 472
 473         // anything coming from the view entity will always be full volume
 474         // LordHavoc: make sounds with ATTN_NONE have no spatialization
 475         if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
 476         {
 477                 ch->leftvol = ch->master_vol;
 478                 ch->rightvol = ch->master_vol;
 479         }
 480         else
 481         {
 482                 // update sound origin if we know about the entity
 483                 if (ch->entnum > 0 && cls.state == ca_connected && cl_entities[ch->entnum].state_current.active)
 484                 {
 485                         //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]);
 486                         VectorCopy(cl_entities[ch->entnum].state_current.origin, ch->origin);
 487                         if (cl_entities[ch->entnum].state_current.modelindex && cl.model_precache[cl_entities[ch->entnum].state_current.modelindex]->soundfromcenter)
 488                                 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);
 489                 }
 490
 491                 // calculate stereo seperation and distance attenuation
 492                 VectorSubtract(ch->origin, listener_vieworigin, source_vec);
 493                 dist = VectorNormalizeLength(source_vec);
 494                 // distance
 495                 scale = ch->master_vol * (1.0 - (dist * ch->dist_mult));
 496                 // panning
 497                 pan = scale * DotProduct(listener_viewleft, source_vec);
 498                 // calculate the volumes
 499                 ch->leftvol = (int) (scale + pan);
 500                 ch->rightvol = (int) (scale - pan);
 501         }
 502
 503         // LordHavoc: allow adjusting volume of static sounds
 504         if (isstatic)
 505         {
 506                 ch->leftvol *= snd_staticvolume.value;
 507                 ch->rightvol *= snd_staticvolume.value;
 508         }
 509
 510         // clamp volumes
 511         ch->leftvol = bound(0, ch->leftvol, 255);
 512         ch->rightvol = bound(0, ch->rightvol, 255);
 513 }
 514
 515
 516 // =======================================================================
 517 // Start a sound effect
 518 // =======================================================================
 519
 520 int S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 521 {
 522         channel_t *target_chan, *check;
 523         int             vol;
 524         int             ch_idx;
 525         size_t  skip;
 526
 527         if (!sound_started || !sfx || !sfx->fetcher || nosound.integer)
 528                 return -1;
 529
 530         vol = fvol*255;
 531
 532 // pick a channel to play on
 533         target_chan = SND_PickChannel(entnum, entchannel);
 534         if (!target_chan)
 535                 return -1;
 536
 537 // spatialize
 538         memset (target_chan, 0, sizeof(*target_chan));
 539         VectorCopy(origin, target_chan->origin);
 540         target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
 541         target_chan->master_vol = vol;
 542         target_chan->entnum = entnum;
 543         target_chan->entchannel = entchannel;
 544         SND_Spatialize(target_chan, false);
 545
 546         // LordHavoc: spawn the sound anyway because the player might teleport to it
 547         //if (!target_chan->leftvol && !target_chan->rightvol)
 548         //      return;         // not audible at all
 549
 550         // new channel
 551         if (!S_LoadSound (sfx, true))
 552         {
 553                 target_chan->sfx = NULL;
 554                 return -1;              // couldn't load the sound's data
 555         }
 556
 557         target_chan->sfx = sfx;
 558         target_chan->flags = CHANNELFLAG_NONE;
 559         target_chan->pos = 0.0;
 560         target_chan->end = paintedtime + sfx->total_length;
 561         target_chan->lastptime = paintedtime;
 562
 563 // if an identical sound has also been started this frame, offset the pos
 564 // a bit to keep it from just making the first one louder
 565         check = &channels[NUM_AMBIENTS];
 566         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
 567         {
 568                 if (check == target_chan)
 569                         continue;
 570                 if (check->sfx == sfx && !check->pos)
 571                 {
 572                         // LordHavoc: fixed skip calculations
 573                         skip = 0.1 * sfx->format.speed;
 574                         if (skip > sfx->total_length)
 575                                 skip = sfx->total_length;
 576                         if (skip > 0)
 577                                 skip = rand() % skip;
 578                         target_chan->pos += skip;
 579                         target_chan->end -= skip;
 580                         break;
 581                 }
 582         }
 583
 584         return (target_chan - channels);
 585 }
 586
 587 void S_StopChannel (unsigned int channel_ind)
 588 {
 589         channel_t *ch;
 590
 591         if (channel_ind >= total_channels)
 592                 return;
 593
 594         ch = &channels[channel_ind];
 595         if (ch->sfx != NULL)
 596         {
 597                 if (ch->sfx->fetcher != NULL)
 598                 {
 599                         snd_fetcher_end_t fetcher_end = ch->sfx->fetcher->end;
 600                         if (fetcher_end != NULL)
 601                                 fetcher_end (ch);
 602                 }
 603                 ch->sfx = NULL;
 604         }
 605         ch->end = 0;
 606 }
 607
 608 void S_PauseChannel (unsigned int channel_ind, qboolean toggle)
 609 {
 610         if (toggle)
 611                 channels[channel_ind].flags |= CHANNELFLAG_PAUSED;
 612         else
 613                 channels[channel_ind].flags &= ~CHANNELFLAG_PAUSED;
 614 }
 615
 616 void S_LoopChannel (unsigned int channel_ind, qboolean toggle)
 617 {
 618         if (toggle)
 619                 channels[channel_ind].flags |= CHANNELFLAG_FORCELOOP;
 620         else
 621                 channels[channel_ind].flags &= ~CHANNELFLAG_FORCELOOP;
 622 }
 623
 624 void S_StopSound(int entnum, int entchannel)
 625 {
 626         unsigned int i;
 627
 628         for (i = 0; i < MAX_DYNAMIC_CHANNELS; i++)
 629                 if (channels[i].entnum == entnum && channels[i].entchannel == entchannel)
 630                 {
 631                         S_StopChannel (i);
 632                         return;
 633                 }
 634 }
 635
 636 void S_StopAllSounds(qboolean clear)
 637 {
 638         unsigned int i;
 639
 640         for (i = 0; i < total_channels; i++)
 641                 S_StopChannel (i);
 642
 643         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 644         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 645
 646         if (clear)
 647                 S_ClearBuffer();
 648 }
 649
 650 void S_StopAllSoundsC(void)
 651 {
 652         S_StopAllSounds(true);
 653 }
 654
 655 void S_PauseGameSounds (void)
 656 {
 657         unsigned int i;
 658
 659         for (i = 0; i < total_channels; i++)
 660         {
 661                 channel_t *ch;
 662
 663                 ch = &channels[i];
 664                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 665                         ch->flags |= CHANNELFLAG_PAUSED;
 666         }
 667 }
 668
 669 void S_ResumeGameSounds (void)
 670 {
 671         unsigned int i;
 672
 673         for (i = 0; i < total_channels; i++)
 674         {
 675                 channel_t *ch;
 676
 677                 ch = &channels[i];
 678                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 679                         ch->flags &= ~CHANNELFLAG_PAUSED;
 680         }
 681 }
 682
 683 void S_SetChannelVolume (unsigned int ch_ind, float fvol)
 684 {
 685         channels[ch_ind].master_vol = fvol * 255;
 686 }
 687
 688
 689 void S_ClearBuffer(void)
 690 {
 691         int             clear;
 692
 693         if (!sound_started || !shm)
 694                 return;
 695
 696         if (shm->format.width == 1)
 697                 clear = 0x80;
 698         else
 699                 clear = 0;
 700
 701 #ifdef _WIN32
 702         if (pDSBuf)
 703         {
 704                 DWORD   dwSize;
 705                 DWORD   *pData;
 706                 int             reps;
 707                 HRESULT hresult;
 708
 709                 reps = 0;
 710
 711                 while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, (LPVOID*)&pData, &dwSize, NULL, NULL, 0)) != DS_OK)
 712                 {
 713                         if (hresult != DSERR_BUFFERLOST)
 714                         {
 715                                 Con_Print("S_ClearBuffer: DS::Lock Sound Buffer Failed\n");
 716                                 S_Shutdown ();
 717                                 return;
 718                         }
 719
 720                         if (++reps > 10000)
 721                         {
 722                                 Con_Print("S_ClearBuffer: DS: couldn't restore buffer\n");
 723                                 S_Shutdown ();
 724                                 return;
 725                         }
 726                 }
 727
 728                 memset(pData, clear, shm->samples * shm->format.width);
 729
 730                 pDSBuf->lpVtbl->Unlock(pDSBuf, pData, dwSize, NULL, 0);
 731
 732         }
 733         else
 734 #endif
 735         if (shm->buffer)
 736         {
 737                 int             setsize = shm->samples * shm->format.width;
 738                 char    *buf = shm->buffer;
 739
 740                 while (setsize--)
 741                         *buf++ = clear;
 742
 743 // on i586/i686 optimized versions of glibc, glibc *wrongly* IMO,
 744 // reads the memory area before writing to it causing a seg fault
 745 // since the memory is PROT_WRITE only and not PROT_READ|PROT_WRITE
 746 //              memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
 747         }
 748 }
 749
 750
 751 /*
 752 =================
 753 S_StaticSound
 754 =================
 755 */
 756 void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
 757 {
 758         channel_t       *ss;
 759
 760         if (!sfx)
 761                 return;
 762
 763         if (total_channels == MAX_CHANNELS)
 764         {
 765                 Con_Print("total_channels == MAX_CHANNELS\n");
 766                 return;
 767         }
 768
 769         if (!S_LoadSound (sfx, true))
 770                 return;
 771
 772         if (sfx->loopstart == -1)
 773                 Con_DPrintf("Quake compatibility warning: Static sound \"%s\" is not looped\n", sfx->name);
 774
 775         ss = &channels[total_channels++];
 776         memset(ss, 0, sizeof(*ss));
 777         ss->flags = CHANNELFLAG_FORCELOOP;
 778         ss->sfx = sfx;
 779         VectorCopy (origin, ss->origin);
 780         ss->master_vol = vol;
 781         ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
 782         ss->end = paintedtime + sfx->total_length;
 783         ss->lastptime = paintedtime;
 784
 785         SND_Spatialize (ss, true);
 786 }
 787
 788
 789 //=============================================================================
 790
 791 /*
 792 ===================
 793 S_UpdateAmbientSounds
 794 ===================
 795 */
 796 void S_UpdateAmbientSounds (void)
 797 {
 798         float           vol;
 799         int                     ambient_channel;
 800         channel_t       *chan;
 801         qbyte           ambientlevels[NUM_AMBIENTS];
 802
 803         // LordHavoc: kill ambient sounds until proven otherwise
 804         for (ambient_channel = 0 ; ambient_channel < NUM_AMBIENTS;ambient_channel++)
 805                 channels[ambient_channel].sfx = NULL;
 806
 807         if (ambient_level.value <= 0 || !cl.worldmodel || !cl.worldmodel->brush.AmbientSoundLevelsForPoint)
 808                 return;
 809
 810         cl.worldmodel->brush.AmbientSoundLevelsForPoint(cl.worldmodel, listener_vieworigin, ambientlevels, sizeof(ambientlevels));
 811
 812 // calc ambient sound levels
 813         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 814         {
 815                 if (ambient_sfx[ambient_channel] &&
 816                         (ambient_sfx[ambient_channel]->flags & SFXFLAG_SILENTLYMISSING))
 817                         continue;
 818                 chan = &channels[ambient_channel];
 819                 chan->flags |= CHANNELFLAG_FORCELOOP;
 820                 chan->sfx = ambient_sfx[ambient_channel];
 821
 822                 vol = ambient_level.value * ambientlevels[ambient_channel];
 823                 if (vol < 8)
 824                         vol = 0;
 825
 826         // don't adjust volume too fast
 827                 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                 else if (chan->master_vol > vol)
 834                 {
 835                         chan->master_vol -= host_realframetime * ambient_fade.value;
 836                         if (chan->master_vol < vol)
 837                                 chan->master_vol = vol;
 838                 }
 839
 840                 chan->leftvol = chan->rightvol = chan->master_vol;
 841         }
 842 }
 843
 844
 845 /*
 846 ============
 847 S_Update
 848
 849 Called once each time through the main loop
 850 ============
 851 */
 852 void S_Update(vec3_t origin, vec3_t forward, vec3_t left, vec3_t up)
 853 {
 854         unsigned int i, j, total;
 855         channel_t *ch, *combine;
 856
 857         if (!snd_initialized.integer || (snd_blocked > 0))
 858                 return;
 859
 860         VectorCopy(origin, listener_vieworigin);
 861         VectorCopy(forward, listener_viewforward);
 862         VectorCopy(left, listener_viewleft);
 863         VectorCopy(up, listener_viewup);
 864
 865 // update general area ambient sound sources
 866         S_UpdateAmbientSounds ();
 867
 868         combine = NULL;
 869
 870 // update spatialization for static and dynamic sounds
 871         ch = channels+NUM_AMBIENTS;
 872         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
 873         {
 874                 if (!ch->sfx)
 875                         continue;
 876                 SND_Spatialize(ch, i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS);         // respatialize channel
 877                 if (!ch->leftvol && !ch->rightvol)
 878                         continue;
 879
 880         // try to combine static sounds with a previous channel of the same
 881         // sound effect so we don't mix five torches every frame
 882
 883                 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
 884                 {
 885                 // see if it can just use the last one
 886                         if (combine && combine->sfx == ch->sfx)
 887                         {
 888                                 combine->leftvol += ch->leftvol;
 889                                 combine->rightvol += ch->rightvol;
 890                                 ch->leftvol = ch->rightvol = 0;
 891                                 continue;
 892                         }
 893                 // search for one
 894                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
 895                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
 896                                 if (combine->sfx == ch->sfx)
 897                                         break;
 898
 899                         if (j == total_channels)
 900                                 combine = NULL;
 901                         else
 902                         {
 903                                 if (combine != ch)
 904                                 {
 905                                         combine->leftvol += ch->leftvol;
 906                                         combine->rightvol += ch->rightvol;
 907                                         ch->leftvol = ch->rightvol = 0;
 908                                 }
 909                                 continue;
 910                         }
 911                 }
 912         }
 913
 914 //
 915 // debugging output
 916 //
 917         if (snd_show.integer)
 918         {
 919                 total = 0;
 920                 ch = channels;
 921                 for (i=0 ; i<total_channels; i++, ch++)
 922                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
 923                                 total++;
 924
 925                 Con_Printf("----(%u)----\n", total);
 926         }
 927
 928 // mix some sound
 929         S_Update_();
 930 }
 931
 932 void GetSoundtime(void)
 933 {
 934         int             samplepos;
 935         static  int             buffers;
 936         static  int             oldsamplepos;
 937         int             fullsamples;
 938
 939         fullsamples = shm->samples / shm->format.channels;
 940
 941 // it is possible to miscount buffers if it has wrapped twice between
 942 // calls to S_Update.  Oh well.
 943         samplepos = SNDDMA_GetDMAPos();
 944
 945         if (samplepos < oldsamplepos)
 946         {
 947                 buffers++;                                      // buffer wrapped
 948
 949                 if (paintedtime > 0x40000000)
 950                 {       // time to chop things off to avoid 32 bit limits
 951                         buffers = 0;
 952                         paintedtime = fullsamples;
 953                         S_StopAllSounds (true);
 954                 }
 955         }
 956         oldsamplepos = samplepos;
 957
 958         soundtime = buffers * fullsamples + samplepos / shm->format.channels;
 959 }
 960
 961 void IN_Accumulate (void);
 962
 963 void S_ExtraUpdate (void)
 964 {
 965
 966 #ifdef _WIN32
 967         IN_Accumulate ();
 968 #endif
 969
 970         if (snd_noextraupdate.integer)
 971                 return;         // don't pollute timings
 972         S_Update_();
 973 }
 974
 975 void S_Update_(void)
 976 {
 977         unsigned        endtime;
 978         int                             samps;
 979
 980         if (!sound_started || (snd_blocked > 0))
 981                 return;
 982
 983 // Updates DMA time
 984         GetSoundtime();
 985
 986 // check to make sure that we haven't overshot
 987         if (paintedtime < soundtime)
 988                 paintedtime = soundtime;
 989
 990 // mix ahead of current position
 991         endtime = soundtime + _snd_mixahead.value * shm->format.speed;
 992         samps = shm->samples >> (shm->format.channels - 1);
 993         if (endtime > (unsigned int)(soundtime + samps))
 994                 endtime = soundtime + samps;
 995
 996 #ifdef _WIN32
 997 // if the buffer was lost or stopped, restore it and/or restart it
 998         {
 999                 DWORD   dwStatus;
1000
1001                 if (pDSBuf)
1002                 {
1003                         if (pDSBuf->lpVtbl->GetStatus (pDSBuf, &dwStatus) != DS_OK)
1004                                 Con_Print("Couldn't get sound buffer status\n");
1005
1006                         if (dwStatus & DSBSTATUS_BUFFERLOST)
1007                                 pDSBuf->lpVtbl->Restore (pDSBuf);
1008
1009                         if (!(dwStatus & DSBSTATUS_PLAYING))
1010                                 pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
1011                 }
1012         }
1013 #endif
1014
1015         S_PaintChannels (endtime);
1016
1017         SNDDMA_Submit ();
1018 }
1019
1020 /*
1021 ===============================================================================
1022
1023 console functions
1024
1025 ===============================================================================
1026 */
1027
1028 static void S_Play_Common(float fvol, float attenuation)
1029 {
1030         int     i, ch_ind;
1031         char name[256];
1032         sfx_t   *sfx;
1033
1034         i = 1;
1035         while (i<Cmd_Argc())
1036         {
1037                 if (!strrchr(Cmd_Argv(i), '.'))
1038                         snprintf(name, sizeof(name), "%s.wav", Cmd_Argv(i));
1039                 else
1040                         strlcpy(name, Cmd_Argv(i), sizeof(name));
1041                 sfx = S_PrecacheSound(name, true);
1042
1043                 // If we need to get the volume from the command line
1044                 if (fvol == -1.0f)
1045                 {
1046                         fvol = atof(Cmd_Argv(i+1));
1047                         i += 2;
1048                 }
1049                 else
1050                         i++;
1051
1052                 ch_ind = S_StartSound(-1, 0, sfx, listener_vieworigin, fvol, attenuation);
1053                 if (ch_ind >= 0)
1054                         channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1055         }
1056 }
1057
1058 void S_Play(void)
1059 {
1060         S_Play_Common (1.0f, 1.0f);
1061 }
1062
1063 void S_Play2(void)
1064 {
1065         S_Play_Common (1.0f, 0.0f);
1066 }
1067
1068 void S_PlayVol(void)
1069 {
1070         S_Play_Common (-1.0f, 0.0f);
1071 }
1072
1073 void S_SoundList(void)
1074 {
1075         int             i;
1076         sfx_t   *sfx;
1077         int             size, total;
1078
1079         total = 0;
1080         for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
1081         {
1082                 if (sfx->fetcher != NULL)
1083                 {
1084                         size = sfx->mempool->totalsize;
1085                         total += size;
1086                         Con_Printf ("%c%c(%2db, %6s) %8i : %s\n",
1087                                                 (sfx->loopstart >= 0) ? 'L' : ' ',
1088                                                 (sfx->flags & SFXFLAG_STREAMED) ? 'S' : ' ',
1089                                                 sfx->format.width * 8,
1090                                                 (sfx->format.channels == 2) ? "stereo" : "mono",
1091                                                 size,
1092                                                 sfx->name);
1093                 }
1094         }
1095         Con_Printf("Total resident: %i\n", total);
1096 }
1097
1098
1099 void S_LocalSound (char *sound)
1100 {
1101         sfx_t   *sfx;
1102         int             ch_ind;
1103
1104         if (!snd_initialized.integer || nosound.integer)
1105                 return;
1106
1107         sfx = S_PrecacheSound (sound, true);
1108         if (!sfx)
1109         {
1110                 Con_Printf("S_LocalSound: can't precache %s\n", sound);
1111                 return;
1112         }
1113
1114         ch_ind = S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1);
1115         if (ch_ind >= 0)
1116                 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1117 }
1118
1119
1120 #define RAWSAMPLESBUFFER 32768
1121 short s_rawsamplesbuffer[RAWSAMPLESBUFFER * 2];
1122 int s_rawsamplesbuffer_start;
1123 size_t s_rawsamplesbuffer_count;
1124
1125 void S_RawSamples_Enqueue(short *samples, unsigned int length)
1126 {
1127         int b2, b3;
1128         //Con_Printf("S_RawSamples_Enqueue: %i samples\n", length);
1129         if (s_rawsamplesbuffer_count + length > RAWSAMPLESBUFFER)
1130                 return;
1131         b2 = (s_rawsamplesbuffer_start + s_rawsamplesbuffer_count) % RAWSAMPLESBUFFER;
1132         if (b2 + length > RAWSAMPLESBUFFER)
1133         {
1134                 b3 = (b2 + length) % RAWSAMPLESBUFFER;
1135                 memcpy(s_rawsamplesbuffer + b2 * 2, samples, (RAWSAMPLESBUFFER - b2) * sizeof(short[2]));
1136                 memcpy(s_rawsamplesbuffer, samples + (RAWSAMPLESBUFFER - b2) * 2, b3 * sizeof(short[2]));
1137         }
1138         else
1139                 memcpy(s_rawsamplesbuffer + b2 * 2, samples, length * sizeof(short[2]));
1140         s_rawsamplesbuffer_count += length;
1141 }
1142
1143 void S_RawSamples_Dequeue(int *samples, unsigned int length)
1144 {
1145         int b1, b2;
1146         size_t l;
1147         int i;
1148         short *in;
1149         int *out;
1150         int count;
1151         l = length;
1152         if (l > s_rawsamplesbuffer_count)
1153                 l = s_rawsamplesbuffer_count;
1154         b1 = (s_rawsamplesbuffer_start) % RAWSAMPLESBUFFER;
1155         if (b1 + l > RAWSAMPLESBUFFER)
1156         {
1157                 b2 = (b1 + l) % RAWSAMPLESBUFFER;
1158                 //memcpy(samples, s_rawsamplesbuffer + b1 * 2, (RAWSAMPLESBUFFER - b1) * sizeof(short[2]));
1159                 //memcpy(samples + (RAWSAMPLESBUFFER - b1) * 2, s_rawsamplesbuffer, b2 * sizeof(short[2]));
1160                 for (out = samples, in = s_rawsamplesbuffer + b1 * 2, count = (RAWSAMPLESBUFFER - b1) * 2, i = 0;i < count;i++)
1161                         out[i] = in[i];
1162                 for (out = samples + (RAWSAMPLESBUFFER - b1) * 2, in = s_rawsamplesbuffer, count = b2 * 2, i = 0;i < count;i++)
1163                         out[i] = in[i];
1164                 //Con_Printf("S_RawSamples_Dequeue: buffer wrap %i %i\n", (RAWSAMPLESBUFFER - b1), b2);
1165         }
1166         else
1167         {
1168                 //memcpy(samples, s_rawsamplesbuffer + b1 * 2, l * sizeof(short[2]));
1169                 for (out = samples, in = s_rawsamplesbuffer + b1 * 2, count = l * 2, i = 0;i < count;i++)
1170                         out[i] = in[i];
1171                 //Con_Printf("S_RawSamples_Dequeue: normal      %i\n", l);
1172         }
1173         if (l < (int)length)
1174         {
1175                 memset(samples + l * 2, 0, (length - l) * sizeof(int[2]));
1176                 //Con_Printf("S_RawSamples_Dequeue: padding with %i samples\n", length - l);
1177         }
1178         s_rawsamplesbuffer_start = (s_rawsamplesbuffer_start + l) % RAWSAMPLESBUFFER;
1179         s_rawsamplesbuffer_count -= l;
1180 }
1181
1182 void S_RawSamples_ClearQueue(void)
1183 {
1184         s_rawsamplesbuffer_count = 0;
1185         s_rawsamplesbuffer_start = 0;
1186 }
1187
1188 int S_RawSamples_QueueWantsMore(void)
1189 {
1190         if (shm != NULL && s_rawsamplesbuffer_count < min(shm->format.speed >> 1, RAWSAMPLESBUFFER >> 1))
1191                 return RAWSAMPLESBUFFER - s_rawsamplesbuffer_count;
1192         else
1193                 return 0;
1194 }
1195
1196 void S_ResampleBuffer16Stereo(short *input, int inputlength, short *output, int outputlength)
1197 {
1198         if (inputlength != outputlength)
1199         {
1200                 int i, position, stopposition, step;
1201                 short *in, *out;
1202                 step = (float) inputlength * 256.0f / (float) outputlength;
1203                 position = 0;
1204                 stopposition = (inputlength - 1) << 8;
1205                 out = output;
1206                 for (i = 0;i < outputlength && position < stopposition;i++, position += step)
1207                 {
1208                         in = input + ((position >> 8) << 1);
1209                         out[0] = (((in[1] - in[0]) * (position & 255)) >> 8) + in[0];
1210                         out[1] = (((in[3] - in[2]) * (position & 255)) >> 8) + in[2];
1211                         out += 2;
1212                 }
1213                 stopposition = inputlength << 8;
1214                 for (i = 0;i < outputlength && position < stopposition;i++, position += step)
1215                 {
1216                         in = input + ((position >> 8) << 1);
1217                         out[0] = in[0];
1218                         out[1] = in[2];
1219                         out += 2;
1220                 }
1221         }
1222         else
1223                 memcpy(output, input, inputlength * sizeof(short[2]));
1224 }
1225
1226 int S_RawSamples_SampleRate(void)
1227 {
1228         return shm != NULL ? shm->format.speed : 0;
1229 }
1230