snd_dma.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // snd_dma.c -- main control for any streaming sound output device
  21
  22 #include "quakedef.h"
  23
  24 #ifdef _WIN32
  25 #include <windows.h>
  26 #include <dsound.h>
  27 extern DWORD gSndBufSize;
  28 extern LPDIRECTSOUND pDS;
  29 extern LPDIRECTSOUNDBUFFER pDSBuf;
  30 #endif
  31
  32 #include "snd_ogg.h"
  33
  34
  35 void S_Play(void);
  36 void S_PlayVol(void);
  37 void S_Play2(void);
  38 void S_SoundList(void);
  39 void S_Update_();
  40 void S_StopAllSounds(qboolean clear);
  41 void S_StopAllSoundsC(void);
  42
  43 // =======================================================================
  44 // Internal sound data & structures
  45 // =======================================================================
  46
  47 channel_t channels[MAX_CHANNELS];
  48 unsigned int total_channels;
  49
  50 int snd_blocked = 0;
  51 static qboolean snd_ambient = 1;
  52 cvar_t snd_initialized = { CVAR_READONLY, "snd_initialized", "0"};
  53 cvar_t snd_streaming = { CVAR_SAVE, "snd_streaming", "1"};
  54
  55 // pointer should go away
  56 volatile dma_t *shm = 0;
  57 volatile dma_t sn;
  58
  59 vec3_t listener_vieworigin;
  60 vec3_t listener_viewforward;
  61 vec3_t listener_viewleft;
  62 vec3_t listener_viewup;
  63 vec_t sound_nominal_clip_dist=1000.0;
  64 mempool_t *snd_mempool;
  65
  66 // sample PAIRS
  67 int soundtime;
  68 int paintedtime;
  69
  70
  71 //LordHavoc: increased the client sound limit from 512 to 4096 for the Nehahra movie
  72 #define MAX_SFX 4096
  73 sfx_t *known_sfx; // allocated [MAX_SFX]
  74 int num_sfx;
  75
  76 sfx_t *ambient_sfx[NUM_AMBIENTS];
  77
  78 int sound_started = 0;
  79
  80 cvar_t bgmvolume = {CVAR_SAVE, "bgmvolume", "1"};
  81 cvar_t volume = {CVAR_SAVE, "volume", "0.7"};
  82 cvar_t snd_staticvolume = {CVAR_SAVE, "snd_staticvolume", "1"};
  83
  84 cvar_t nosound = {0, "nosound", "0"};
  85 cvar_t snd_precache = {0, "snd_precache", "1"};
  86 cvar_t bgmbuffer = {0, "bgmbuffer", "4096"};
  87 cvar_t ambient_level = {0, "ambient_level", "0.3"};
  88 cvar_t ambient_fade = {0, "ambient_fade", "100"};
  89 cvar_t snd_noextraupdate = {0, "snd_noextraupdate", "0"};
  90 cvar_t snd_show = {0, "snd_show", "0"};
  91 cvar_t _snd_mixahead = {CVAR_SAVE, "_snd_mixahead", "0.1"};
  92 cvar_t snd_swapstereo = {CVAR_SAVE, "snd_swapstereo", "0"};
  93
  94
  95 // ====================================================================
  96 // User-setable variables
  97 // ====================================================================
  98
  99
 100 //
 101 // Fake dma is a synchronous faking of the DMA progress used for
 102 // isolating performance in the renderer.  The fakedma_updates is
 103 // number of times S_Update() is called per second.
 104 //
 105
 106 qboolean fakedma = false;
 107 int fakedma_updates = 15;
 108
 109
 110 void S_AmbientOff (void)
 111 {
 112         snd_ambient = false;
 113 }
 114
 115
 116 void S_AmbientOn (void)
 117 {
 118         snd_ambient = true;
 119 }
 120
 121
 122 void S_SoundInfo_f(void)
 123 {
 124         if (!sound_started || !shm)
 125         {
 126                 Con_Print("sound system not started\n");
 127                 return;
 128         }
 129
 130         Con_Printf("%5d stereo\n", shm->format.channels - 1);
 131         Con_Printf("%5d samples\n", shm->samples);
 132         Con_Printf("%5d samplepos\n", shm->samplepos);
 133         Con_Printf("%5d samplebits\n", shm->format.width * 8);
 134         Con_Printf("%5d speed\n", shm->format.speed);
 135         Con_Printf("%p dma buffer\n", shm->buffer);
 136         Con_Printf("%5u total_channels\n", total_channels);
 137 }
 138
 139 void S_UnloadSounds(void)
 140 {
 141         int i;
 142         for (i = 0;i < num_sfx;i++)
 143                 S_UnloadSound(known_sfx + i);
 144 }
 145
 146 void S_LoadSounds(void)
 147 {
 148         int i;
 149         for (i = 0;i < num_sfx;i++)
 150                 S_LoadSound(known_sfx + i, false);
 151 }
 152
 153 void S_Startup(void)
 154 {
 155         if (!snd_initialized.integer)
 156                 return;
 157
 158         shm = &sn;
 159         memset((void *)shm, 0, sizeof(*shm));
 160
 161 // create a piece of DMA memory
 162
 163         if (fakedma)
 164         {
 165                 shm->format.width = 2;
 166                 shm->format.speed = 22050;
 167                 shm->format.channels = 2;
 168                 shm->samples = 32768;
 169                 shm->samplepos = 0;
 170                 shm->buffer = Mem_Alloc(snd_mempool, shm->format.channels * shm->samples * shm->format.width);
 171         }
 172         else
 173         {
 174                 if (!SNDDMA_Init())
 175                 {
 176                         Con_Print("S_Startup: SNDDMA_Init failed.\n");
 177                         sound_started = 0;
 178                         shm = NULL;
 179                         return;
 180                 }
 181         }
 182
 183         sound_started = 1;
 184
 185         Con_DPrintf("Sound sampling rate: %i\n", shm->format.speed);
 186
 187         //S_LoadSounds();
 188
 189         S_StopAllSounds(true);
 190 }
 191
 192 void S_Shutdown(void)
 193 {
 194         if (!sound_started)
 195                 return;
 196
 197         //S_UnloadSounds();
 198
 199         if (fakedma)
 200                 Mem_Free(shm->buffer);
 201         else
 202                 SNDDMA_Shutdown();
 203
 204         shm = NULL;
 205         sound_started = 0;
 206 }
 207
 208 void S_Restart_f(void)
 209 {
 210         S_Shutdown();
 211         S_Startup();
 212 }
 213
 214 /*
 215 ================
 216 S_Init
 217 ================
 218 */
 219 void S_Init(void)
 220 {
 221         Con_DPrint("\nSound Initialization\n");
 222
 223         S_RawSamples_ClearQueue();
 224
 225         Cvar_RegisterVariable(&volume);
 226         Cvar_RegisterVariable(&bgmvolume);
 227         Cvar_RegisterVariable(&snd_staticvolume);
 228
 229         if (COM_CheckParm("-nosound") || COM_CheckParm("-safe"))
 230                 return;
 231
 232         snd_mempool = Mem_AllocPool("sound");
 233
 234         if (COM_CheckParm("-simsound"))
 235                 fakedma = true;
 236
 237         Cmd_AddCommand("play", S_Play);
 238         Cmd_AddCommand("play2", S_Play2);
 239         Cmd_AddCommand("playvol", S_PlayVol);
 240         Cmd_AddCommand("stopsound", S_StopAllSoundsC);
 241         Cmd_AddCommand("soundlist", S_SoundList);
 242         Cmd_AddCommand("soundinfo", S_SoundInfo_f);
 243         Cmd_AddCommand("snd_restart", S_Restart_f);
 244
 245         Cvar_RegisterVariable(&nosound);
 246         Cvar_RegisterVariable(&snd_precache);
 247         Cvar_RegisterVariable(&snd_initialized);
 248         Cvar_RegisterVariable(&snd_streaming);
 249         Cvar_RegisterVariable(&bgmbuffer);
 250         Cvar_RegisterVariable(&ambient_level);
 251         Cvar_RegisterVariable(&ambient_fade);
 252         Cvar_RegisterVariable(&snd_noextraupdate);
 253         Cvar_RegisterVariable(&snd_show);
 254         Cvar_RegisterVariable(&_snd_mixahead);
 255         Cvar_RegisterVariable(&snd_swapstereo); // LordHavoc: for people with backwards sound wiring
 256
 257         Cvar_SetValueQuick(&snd_initialized, true);
 258
 259         known_sfx = Mem_Alloc(snd_mempool, MAX_SFX*sizeof(sfx_t));
 260         num_sfx = 0;
 261
 262         SND_InitScaletable ();
 263
 264         ambient_sfx[AMBIENT_WATER] = S_PrecacheSound ("ambience/water1.wav", false);
 265         ambient_sfx[AMBIENT_SKY] = S_PrecacheSound ("ambience/wind2.wav", false);
 266
 267         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 268         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 269
 270         OGG_OpenLibrary ();
 271 }
 272
 273
 274 // =======================================================================
 275 // Load a sound
 276 // =======================================================================
 277
 278 /*
 279 =========
 280 S_GetCached
 281
 282 =========
 283 */
 284 sfx_t *S_GetCached (const char *name)
 285 {
 286         int i;
 287
 288         if (!snd_initialized.integer)
 289                 return NULL;
 290
 291         if (!name)
 292                 Host_Error("S_IsCached: NULL\n");
 293
 294         if (strlen(name) >= MAX_QPATH)
 295                 Host_Error("Sound name too long: %s", name);
 296
 297         for(i = 0;i < num_sfx;i++)
 298                 if(!strcmp(known_sfx[i].name, name))
 299                         return &known_sfx[i];
 300
 301         return NULL;
 302 }
 303
 304 /*
 305 ==================
 306 S_FindName
 307
 308 ==================
 309 */
 310 sfx_t *S_FindName (char *name)
 311 {
 312         int i;
 313         sfx_t *sfx;
 314
 315         if (!snd_initialized.integer)
 316                 return NULL;
 317
 318         if (!name)
 319                 Host_Error("S_FindName: NULL\n");
 320
 321         if (strlen(name) >= MAX_QPATH)
 322                 Host_Error("Sound name too long: %s", name);
 323
 324 // see if already loaded
 325         for (i = 0;i < num_sfx;i++)
 326                 if (!strcmp(known_sfx[i].name, name))
 327                         return &known_sfx[i];
 328
 329         if (num_sfx == MAX_SFX)
 330                 Sys_Error("S_FindName: out of sfx_t");
 331
 332         sfx = &known_sfx[num_sfx++];
 333         memset(sfx, 0, sizeof(*sfx));
 334         strlcpy (sfx->name, name, sizeof (sfx->name));
 335         return sfx;
 336 }
 337
 338
 339 /*
 340 ==================
 341 S_TouchSound
 342
 343 ==================
 344 */
 345 void S_TouchSound (char *name)
 346 {
 347         sfx_t *sfx;
 348
 349         sfx = S_FindName (name);
 350
 351         // Set the "used" flag for this sound
 352         if (sfx != NULL)
 353                 sfx->flags |= SFXFLAG_USED;
 354 }
 355
 356
 357 /*
 358 ==================
 359 S_ClearUsed
 360
 361 Reset the "used" flag of all precached sounds
 362 ==================
 363 */
 364 void S_ClearUsed (void)
 365 {
 366         int i;
 367
 368         for (i = 0; i < num_sfx; i++)
 369                 known_sfx[i].flags &= ~SFXFLAG_USED;
 370 }
 371
 372
 373 /*
 374 ==================
 375 S_PurgeUnused
 376
 377 Free all precached sounds without the "used" flag
 378 ==================
 379 */
 380 void S_PurgeUnused (void)
 381 {
 382         int i;
 383         sfx_t *sfx;
 384
 385         for (i = 0; i < num_sfx; i++)
 386         {
 387                 sfx = &known_sfx[i];
 388                 if (! (sfx->flags & SFXFLAG_USED))
 389                         S_UnloadSound (sfx);
 390         }
 391 }
 392
 393
 394 /*
 395 ==================
 396 S_PrecacheSound
 397
 398 ==================
 399 */
 400 sfx_t *S_PrecacheSound (char *name, int complain)
 401 {
 402         sfx_t *sfx;
 403
 404         if (!snd_initialized.integer)
 405                 return NULL;
 406
 407         sfx = S_FindName(name);
 408
 409         if (!nosound.integer && snd_precache.integer)
 410                 S_LoadSound(sfx, complain);
 411
 412         return sfx;
 413 }
 414
 415
 416 //=============================================================================
 417
 418 /*
 419 =================
 420 SND_PickChannel
 421
 422 Picks a channel based on priorities, empty slots, number of channels
 423 =================
 424 */
 425 channel_t *SND_PickChannel(int entnum, int entchannel)
 426 {
 427         int ch_idx;
 428         int first_to_die;
 429         int life_left;
 430         channel_t* ch;
 431
 432 // Check for replacement sound, or find the best one to replace
 433         first_to_die = -1;
 434         life_left = 0x7fffffff;
 435         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
 436         {
 437                 ch = &channels[ch_idx];
 438                 if (entchannel != 0             // channel 0 never overrides
 439                 && ch->entnum == entnum
 440                 && (ch->entchannel == entchannel || entchannel == -1) )
 441                 {       // always override sound from same entity
 442                         first_to_die = ch_idx;
 443                         break;
 444                 }
 445
 446                 // don't let monster sounds override player sounds
 447                 if (ch->entnum == cl.viewentity && entnum != cl.viewentity && ch->sfx)
 448                         continue;
 449
 450                 // don't override looped sounds
 451                 if ((ch->flags & CHANNELFLAG_FORCELOOP) != 0 ||
 452                         (ch->sfx != NULL && ch->sfx->loopstart >= 0))
 453                         continue;
 454
 455                 if (ch->end - paintedtime < life_left)
 456                 {
 457                         life_left = ch->end - paintedtime;
 458                         first_to_die = ch_idx;
 459                 }
 460         }
 461
 462         if (first_to_die == -1)
 463                 return NULL;
 464
 465         if (channels[first_to_die].sfx)
 466                 channels[first_to_die].sfx = NULL;
 467
 468         return &channels[first_to_die];
 469 }
 470
 471 /*
 472 =================
 473 SND_Spatialize
 474
 475 Spatializes a channel
 476 =================
 477 */
 478 void SND_Spatialize(channel_t *ch, int isstatic)
 479 {
 480         vec_t dist, scale, pan;
 481         vec3_t source_vec;
 482
 483         // anything coming from the view entity will always be full volume
 484         // LordHavoc: make sounds with ATTN_NONE have no spatialization
 485         if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
 486         {
 487                 ch->leftvol = ch->master_vol;
 488                 ch->rightvol = ch->master_vol;
 489         }
 490         else
 491         {
 492                 // update sound origin if we know about the entity
 493                 if (ch->entnum > 0 && cls.state == ca_connected && cl_entities[ch->entnum].state_current.active)
 494                 {
 495                         //Con_Printf("-- entnum %i origin %f %f %f neworigin %f %f %f\n", ch->entnum, ch->origin[0], ch->origin[1], ch->origin[2], cl_entities[ch->entnum].state_current.origin[0], cl_entities[ch->entnum].state_current.origin[1], cl_entities[ch->entnum].state_current.origin[2]);
 496                         VectorCopy(cl_entities[ch->entnum].state_current.origin, ch->origin);
 497                         if (cl_entities[ch->entnum].state_current.modelindex && cl.model_precache[cl_entities[ch->entnum].state_current.modelindex]->soundfromcenter)
 498                                 VectorMAMAM(1.0f, ch->origin, 0.5f, cl.model_precache[cl_entities[ch->entnum].state_current.modelindex]->normalmins, 0.5f, cl.model_precache[cl_entities[ch->entnum].state_current.modelindex]->normalmaxs, ch->origin);
 499                 }
 500
 501                 // calculate stereo seperation and distance attenuation
 502                 VectorSubtract(ch->origin, listener_vieworigin, source_vec);
 503                 dist = VectorNormalizeLength(source_vec);
 504                 // distance
 505                 scale = ch->master_vol * (1.0 - (dist * ch->dist_mult));
 506                 // panning
 507                 pan = scale * DotProduct(listener_viewleft, source_vec);
 508                 // calculate the volumes
 509                 ch->leftvol = (int) (scale + pan);
 510                 ch->rightvol = (int) (scale - pan);
 511         }
 512
 513         // LordHavoc: allow adjusting volume of static sounds
 514         if (isstatic)
 515         {
 516                 ch->leftvol *= snd_staticvolume.value;
 517                 ch->rightvol *= snd_staticvolume.value;
 518         }
 519
 520         // clamp volumes
 521         ch->leftvol = bound(0, ch->leftvol, 255);
 522         ch->rightvol = bound(0, ch->rightvol, 255);
 523 }
 524
 525
 526 // =======================================================================
 527 // Start a sound effect
 528 // =======================================================================
 529
 530 int S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 531 {
 532         channel_t *target_chan, *check;
 533         int             vol;
 534         int             ch_idx;
 535         size_t  skip;
 536
 537         if (!sound_started || !sfx || !sfx->fetcher || nosound.integer)
 538                 return -1;
 539
 540         vol = fvol*255;
 541
 542 // pick a channel to play on
 543         target_chan = SND_PickChannel(entnum, entchannel);
 544         if (!target_chan)
 545                 return -1;
 546
 547 // spatialize
 548         memset (target_chan, 0, sizeof(*target_chan));
 549         VectorCopy(origin, target_chan->origin);
 550         target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
 551         target_chan->master_vol = vol;
 552         target_chan->entnum = entnum;
 553         target_chan->entchannel = entchannel;
 554         SND_Spatialize(target_chan, false);
 555
 556         // LordHavoc: spawn the sound anyway because the player might teleport to it
 557         //if (!target_chan->leftvol && !target_chan->rightvol)
 558         //      return;         // not audible at all
 559
 560         // new channel
 561         if (!S_LoadSound (sfx, true))
 562         {
 563                 target_chan->sfx = NULL;
 564                 return -1;              // couldn't load the sound's data
 565         }
 566
 567         target_chan->sfx = sfx;
 568         target_chan->flags = CHANNELFLAG_NONE;
 569         target_chan->pos = 0.0;
 570         target_chan->end = paintedtime + sfx->total_length;
 571         target_chan->lastptime = paintedtime;
 572
 573 // if an identical sound has also been started this frame, offset the pos
 574 // a bit to keep it from just making the first one louder
 575         check = &channels[NUM_AMBIENTS];
 576         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
 577         {
 578                 if (check == target_chan)
 579                         continue;
 580                 if (check->sfx == sfx && !check->pos)
 581                 {
 582                         // LordHavoc: fixed skip calculations
 583                         skip = 0.1 * sfx->format.speed;
 584                         if (skip > sfx->total_length)
 585                                 skip = sfx->total_length;
 586                         if (skip > 0)
 587                                 skip = rand() % skip;
 588                         target_chan->pos += skip;
 589                         target_chan->end -= skip;
 590                         break;
 591                 }
 592         }
 593
 594         return (target_chan - channels);
 595 }
 596
 597 void S_StopChannel (unsigned int channel_ind)
 598 {
 599         channel_t *ch;
 600
 601         if (channel_ind >= total_channels)
 602                 return;
 603
 604         ch = &channels[channel_ind];
 605         if (ch->sfx != NULL)
 606         {
 607                 if (ch->sfx->fetcher != NULL)
 608                 {
 609                         snd_fetcher_end_t fetcher_end = ch->sfx->fetcher->end;
 610                         if (fetcher_end != NULL)
 611                                 fetcher_end (ch);
 612                 }
 613                 ch->sfx = NULL;
 614         }
 615         ch->end = 0;
 616 }
 617
 618 void S_PauseChannel (unsigned int channel_ind, qboolean toggle)
 619 {
 620         if (toggle)
 621                 channels[channel_ind].flags |= CHANNELFLAG_PAUSED;
 622         else
 623                 channels[channel_ind].flags &= ~CHANNELFLAG_PAUSED;
 624 }
 625
 626 void S_LoopChannel (unsigned int channel_ind, qboolean toggle)
 627 {
 628         if (toggle)
 629                 channels[channel_ind].flags |= CHANNELFLAG_FORCELOOP;
 630         else
 631                 channels[channel_ind].flags &= ~CHANNELFLAG_FORCELOOP;
 632 }
 633
 634 void S_StopSound(int entnum, int entchannel)
 635 {
 636         unsigned int i;
 637
 638         for (i = 0; i < MAX_DYNAMIC_CHANNELS; i++)
 639                 if (channels[i].entnum == entnum && channels[i].entchannel == entchannel)
 640                 {
 641                         S_StopChannel (i);
 642                         return;
 643                 }
 644 }
 645
 646 void S_StopAllSounds(qboolean clear)
 647 {
 648         unsigned int i;
 649
 650         for (i = 0; i < total_channels; i++)
 651                 S_StopChannel (i);
 652
 653         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 654         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 655
 656         if (clear)
 657                 S_ClearBuffer();
 658 }
 659
 660 void S_StopAllSoundsC(void)
 661 {
 662         S_StopAllSounds(true);
 663 }
 664
 665 void S_PauseGameSounds (void)
 666 {
 667         unsigned int i;
 668
 669         for (i = 0; i < total_channels; i++)
 670         {
 671                 channel_t *ch;
 672
 673                 ch = &channels[i];
 674                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 675                         ch->flags |= CHANNELFLAG_PAUSED;
 676         }
 677 }
 678
 679 void S_ResumeGameSounds (void)
 680 {
 681         unsigned int i;
 682
 683         for (i = 0; i < total_channels; i++)
 684         {
 685                 channel_t *ch;
 686
 687                 ch = &channels[i];
 688                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 689                         ch->flags &= ~CHANNELFLAG_PAUSED;
 690         }
 691 }
 692
 693 void S_SetChannelVolume (unsigned int ch_ind, float fvol)
 694 {
 695         channels[ch_ind].master_vol = fvol * 255;
 696 }
 697
 698
 699 void S_ClearBuffer(void)
 700 {
 701         int             clear;
 702
 703         if (!sound_started || !shm)
 704                 return;
 705
 706         if (shm->format.width == 1)
 707                 clear = 0x80;
 708         else
 709                 clear = 0;
 710
 711 #ifdef _WIN32
 712         if (pDSBuf)
 713         {
 714                 DWORD   dwSize;
 715                 DWORD   *pData;
 716                 int             reps;
 717                 HRESULT hresult;
 718
 719                 reps = 0;
 720
 721                 while ((hresult = pDSBuf->lpVtbl->Lock(pDSBuf, 0, gSndBufSize, (LPVOID*)&pData, &dwSize, NULL, NULL, 0)) != DS_OK)
 722                 {
 723                         if (hresult != DSERR_BUFFERLOST)
 724                         {
 725                                 Con_Print("S_ClearBuffer: DS::Lock Sound Buffer Failed\n");
 726                                 S_Shutdown ();
 727                                 return;
 728                         }
 729
 730                         if (++reps > 10000)
 731                         {
 732                                 Con_Print("S_ClearBuffer: DS: couldn't restore buffer\n");
 733                                 S_Shutdown ();
 734                                 return;
 735                         }
 736                 }
 737
 738                 memset(pData, clear, shm->samples * shm->format.width);
 739
 740                 pDSBuf->lpVtbl->Unlock(pDSBuf, pData, dwSize, NULL, 0);
 741
 742         }
 743         else
 744 #endif
 745         if (shm->buffer)
 746         {
 747                 int             setsize = shm->samples * shm->format.width;
 748                 char    *buf = shm->buffer;
 749
 750                 while (setsize--)
 751                         *buf++ = clear;
 752
 753 // on i586/i686 optimized versions of glibc, glibc *wrongly* IMO,
 754 // reads the memory area before writing to it causing a seg fault
 755 // since the memory is PROT_WRITE only and not PROT_READ|PROT_WRITE
 756 //              memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
 757         }
 758 }
 759
 760
 761 /*
 762 =================
 763 S_StaticSound
 764 =================
 765 */
 766 void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
 767 {
 768         channel_t       *ss;
 769
 770         if (!sfx)
 771                 return;
 772
 773         if (total_channels == MAX_CHANNELS)
 774         {
 775                 Con_Print("total_channels == MAX_CHANNELS\n");
 776                 return;
 777         }
 778
 779         if (!S_LoadSound (sfx, true))
 780                 return;
 781
 782         if (sfx->loopstart == -1)
 783                 Con_DPrintf("Quake compatibility warning: Static sound \"%s\" is not looped\n", sfx->name);
 784
 785         ss = &channels[total_channels++];
 786         memset(ss, 0, sizeof(*ss));
 787         ss->flags = CHANNELFLAG_FORCELOOP;
 788         ss->sfx = sfx;
 789         VectorCopy (origin, ss->origin);
 790         ss->master_vol = vol;
 791         ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
 792         ss->end = paintedtime + sfx->total_length;
 793         ss->lastptime = paintedtime;
 794
 795         SND_Spatialize (ss, true);
 796 }
 797
 798
 799 //=============================================================================
 800
 801 /*
 802 ===================
 803 S_UpdateAmbientSounds
 804 ===================
 805 */
 806 void S_UpdateAmbientSounds (void)
 807 {
 808         float           vol;
 809         int                     ambient_channel;
 810         channel_t       *chan;
 811         qbyte           ambientlevels[NUM_AMBIENTS];
 812
 813         // LordHavoc: kill ambient sounds until proven otherwise
 814         for (ambient_channel = 0 ; ambient_channel < NUM_AMBIENTS;ambient_channel++)
 815                 channels[ambient_channel].sfx = NULL;
 816
 817         if (!snd_ambient || ambient_level.value <= 0 || !cl.worldmodel || !cl.worldmodel->brush.AmbientSoundLevelsForPoint)
 818                 return;
 819
 820         cl.worldmodel->brush.AmbientSoundLevelsForPoint(cl.worldmodel, listener_vieworigin, ambientlevels, sizeof(ambientlevels));
 821
 822 // calc ambient sound levels
 823         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 824         {
 825                 if (ambient_sfx[ambient_channel] &&
 826                         (ambient_sfx[ambient_channel]->flags & SFXFLAG_SILENTLYMISSING))
 827                         continue;
 828                 chan = &channels[ambient_channel];
 829                 chan->flags |= CHANNELFLAG_FORCELOOP;
 830                 chan->sfx = ambient_sfx[ambient_channel];
 831
 832                 vol = ambient_level.value * ambientlevels[ambient_channel];
 833                 if (vol < 8)
 834                         vol = 0;
 835
 836         // don't adjust volume too fast
 837                 if (chan->master_vol < vol)
 838                 {
 839                         chan->master_vol += host_realframetime * ambient_fade.value;
 840                         if (chan->master_vol > vol)
 841                                 chan->master_vol = vol;
 842                 }
 843                 else if (chan->master_vol > vol)
 844                 {
 845                         chan->master_vol -= host_realframetime * ambient_fade.value;
 846                         if (chan->master_vol < vol)
 847                                 chan->master_vol = vol;
 848                 }
 849
 850                 chan->leftvol = chan->rightvol = chan->master_vol;
 851         }
 852 }
 853
 854
 855 /*
 856 ============
 857 S_Update
 858
 859 Called once each time through the main loop
 860 ============
 861 */
 862 void S_Update(vec3_t origin, vec3_t forward, vec3_t left, vec3_t up)
 863 {
 864         unsigned int i, j, total;
 865         channel_t *ch, *combine;
 866
 867         if (!snd_initialized.integer || (snd_blocked > 0))
 868                 return;
 869
 870         VectorCopy(origin, listener_vieworigin);
 871         VectorCopy(forward, listener_viewforward);
 872         VectorCopy(left, listener_viewleft);
 873         VectorCopy(up, listener_viewup);
 874
 875 // update general area ambient sound sources
 876         S_UpdateAmbientSounds ();
 877
 878         combine = NULL;
 879
 880 // update spatialization for static and dynamic sounds
 881         ch = channels+NUM_AMBIENTS;
 882         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
 883         {
 884                 if (!ch->sfx)
 885                         continue;
 886                 SND_Spatialize(ch, i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS);         // respatialize channel
 887                 if (!ch->leftvol && !ch->rightvol)
 888                         continue;
 889
 890         // try to combine static sounds with a previous channel of the same
 891         // sound effect so we don't mix five torches every frame
 892
 893                 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
 894                 {
 895                 // see if it can just use the last one
 896                         if (combine && combine->sfx == ch->sfx)
 897                         {
 898                                 combine->leftvol += ch->leftvol;
 899                                 combine->rightvol += ch->rightvol;
 900                                 ch->leftvol = ch->rightvol = 0;
 901                                 continue;
 902                         }
 903                 // search for one
 904                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
 905                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
 906                                 if (combine->sfx == ch->sfx)
 907                                         break;
 908
 909                         if (j == total_channels)
 910                                 combine = NULL;
 911                         else
 912                         {
 913                                 if (combine != ch)
 914                                 {
 915                                         combine->leftvol += ch->leftvol;
 916                                         combine->rightvol += ch->rightvol;
 917                                         ch->leftvol = ch->rightvol = 0;
 918                                 }
 919                                 continue;
 920                         }
 921                 }
 922         }
 923
 924 //
 925 // debugging output
 926 //
 927         if (snd_show.integer)
 928         {
 929                 total = 0;
 930                 ch = channels;
 931                 for (i=0 ; i<total_channels; i++, ch++)
 932                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
 933                                 total++;
 934
 935                 Con_Printf("----(%u)----\n", total);
 936         }
 937
 938 // mix some sound
 939         S_Update_();
 940 }
 941
 942 void GetSoundtime(void)
 943 {
 944         int             samplepos;
 945         static  int             buffers;
 946         static  int             oldsamplepos;
 947         int             fullsamples;
 948
 949         fullsamples = shm->samples / shm->format.channels;
 950
 951 // it is possible to miscount buffers if it has wrapped twice between
 952 // calls to S_Update.  Oh well.
 953         samplepos = SNDDMA_GetDMAPos();
 954
 955         if (samplepos < oldsamplepos)
 956         {
 957                 buffers++;                                      // buffer wrapped
 958
 959                 if (paintedtime > 0x40000000)
 960                 {       // time to chop things off to avoid 32 bit limits
 961                         buffers = 0;
 962                         paintedtime = fullsamples;
 963                         S_StopAllSounds (true);
 964                 }
 965         }
 966         oldsamplepos = samplepos;
 967
 968         soundtime = buffers * fullsamples + samplepos / shm->format.channels;
 969 }
 970
 971 void IN_Accumulate (void);
 972
 973 void S_ExtraUpdate (void)
 974 {
 975
 976 #ifdef _WIN32
 977         IN_Accumulate ();
 978 #endif
 979
 980         if (snd_noextraupdate.integer)
 981                 return;         // don't pollute timings
 982         S_Update_();
 983 }
 984
 985 void S_Update_(void)
 986 {
 987         unsigned        endtime;
 988         int                             samps;
 989
 990         if (!sound_started || (snd_blocked > 0))
 991                 return;
 992
 993 // Updates DMA time
 994         GetSoundtime();
 995
 996 // check to make sure that we haven't overshot
 997         if (paintedtime < soundtime)
 998                 paintedtime = soundtime;
 999
1000 // mix ahead of current position
1001         endtime = soundtime + _snd_mixahead.value * shm->format.speed;
1002         samps = shm->samples >> (shm->format.channels - 1);
1003         if (endtime > (unsigned int)(soundtime + samps))
1004                 endtime = soundtime + samps;
1005
1006 #ifdef _WIN32
1007 // if the buffer was lost or stopped, restore it and/or restart it
1008         {
1009                 DWORD   dwStatus;
1010
1011                 if (pDSBuf)
1012                 {
1013                         if (pDSBuf->lpVtbl->GetStatus (pDSBuf, &dwStatus) != DS_OK)
1014                                 Con_Print("Couldn't get sound buffer status\n");
1015
1016                         if (dwStatus & DSBSTATUS_BUFFERLOST)
1017                                 pDSBuf->lpVtbl->Restore (pDSBuf);
1018
1019                         if (!(dwStatus & DSBSTATUS_PLAYING))
1020                                 pDSBuf->lpVtbl->Play(pDSBuf, 0, 0, DSBPLAY_LOOPING);
1021                 }
1022         }
1023 #endif
1024
1025         S_PaintChannels (endtime);
1026
1027         SNDDMA_Submit ();
1028 }
1029
1030 /*
1031 ===============================================================================
1032
1033 console functions
1034
1035 ===============================================================================
1036 */
1037
1038 static void S_Play_Common(float fvol, float attenuation)
1039 {
1040         int     i, ch_ind;
1041         char name[256];
1042         sfx_t   *sfx;
1043
1044         i = 1;
1045         while (i<Cmd_Argc())
1046         {
1047                 if (!strrchr(Cmd_Argv(i), '.'))
1048                         snprintf(name, sizeof(name), "%s.wav", Cmd_Argv(i));
1049                 else
1050                         strlcpy(name, Cmd_Argv(i), sizeof(name));
1051                 sfx = S_PrecacheSound(name, true);
1052
1053                 // If we need to get the volume from the command line
1054                 if (fvol == -1.0f)
1055                 {
1056                         fvol = atof(Cmd_Argv(i+1));
1057                         i += 2;
1058                 }
1059                 else
1060                         i++;
1061
1062                 ch_ind = S_StartSound(-1, 0, sfx, listener_vieworigin, fvol, attenuation);
1063                 if (ch_ind >= 0)
1064                         channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1065         }
1066 }
1067
1068 void S_Play(void)
1069 {
1070         S_Play_Common (1.0f, 1.0f);
1071 }
1072
1073 void S_Play2(void)
1074 {
1075         S_Play_Common (1.0f, 0.0f);
1076 }
1077
1078 void S_PlayVol(void)
1079 {
1080         S_Play_Common (-1.0f, 0.0f);
1081 }
1082
1083 void S_SoundList(void)
1084 {
1085         int             i;
1086         sfx_t   *sfx;
1087         int             size, total;
1088
1089         total = 0;
1090         for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
1091         {
1092                 if (sfx->fetcher != NULL)
1093                 {
1094                         size = sfx->mempool->totalsize;
1095                         total += size;
1096                         Con_Printf ("%c%c(%2db, %6s) %8i : %s\n",
1097                                                 (sfx->loopstart >= 0) ? 'L' : ' ',
1098                                                 (sfx->flags & SFXFLAG_STREAMED) ? 'S' : ' ',
1099                                                 sfx->format.width * 8,
1100                                                 (sfx->format.channels == 2) ? "stereo" : "mono",
1101                                                 size,
1102                                                 sfx->name);
1103                 }
1104         }
1105         Con_Printf("Total resident: %i\n", total);
1106 }
1107
1108
1109 void S_LocalSound (char *sound)
1110 {
1111         sfx_t   *sfx;
1112         int             ch_ind;
1113
1114         if (!snd_initialized.integer || nosound.integer)
1115                 return;
1116
1117         sfx = S_PrecacheSound (sound, true);
1118         if (!sfx)
1119         {
1120                 Con_Printf("S_LocalSound: can't precache %s\n", sound);
1121                 return;
1122         }
1123
1124         ch_ind = S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1);
1125         if (ch_ind >= 0)
1126                 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1127 }
1128
1129
1130 #define RAWSAMPLESBUFFER 32768
1131 short s_rawsamplesbuffer[RAWSAMPLESBUFFER * 2];
1132 int s_rawsamplesbuffer_start;
1133 size_t s_rawsamplesbuffer_count;
1134
1135 void S_RawSamples_Enqueue(short *samples, unsigned int length)
1136 {
1137         int b2, b3;
1138         //Con_Printf("S_RawSamples_Enqueue: %i samples\n", length);
1139         if (s_rawsamplesbuffer_count + length > RAWSAMPLESBUFFER)
1140                 return;
1141         b2 = (s_rawsamplesbuffer_start + s_rawsamplesbuffer_count) % RAWSAMPLESBUFFER;
1142         if (b2 + length > RAWSAMPLESBUFFER)
1143         {
1144                 b3 = (b2 + length) % RAWSAMPLESBUFFER;
1145                 memcpy(s_rawsamplesbuffer + b2 * 2, samples, (RAWSAMPLESBUFFER - b2) * sizeof(short[2]));
1146                 memcpy(s_rawsamplesbuffer, samples + (RAWSAMPLESBUFFER - b2) * 2, b3 * sizeof(short[2]));
1147         }
1148         else
1149                 memcpy(s_rawsamplesbuffer + b2 * 2, samples, length * sizeof(short[2]));
1150         s_rawsamplesbuffer_count += length;
1151 }
1152
1153 void S_RawSamples_Dequeue(int *samples, unsigned int length)
1154 {
1155         int b1, b2;
1156         size_t l;
1157         int i;
1158         short *in;
1159         int *out;
1160         int count;
1161         l = length;
1162         if (l > s_rawsamplesbuffer_count)
1163                 l = s_rawsamplesbuffer_count;
1164         b1 = (s_rawsamplesbuffer_start) % RAWSAMPLESBUFFER;
1165         if (b1 + l > RAWSAMPLESBUFFER)
1166         {
1167                 b2 = (b1 + l) % RAWSAMPLESBUFFER;
1168                 //memcpy(samples, s_rawsamplesbuffer + b1 * 2, (RAWSAMPLESBUFFER - b1) * sizeof(short[2]));
1169                 //memcpy(samples + (RAWSAMPLESBUFFER - b1) * 2, s_rawsamplesbuffer, b2 * sizeof(short[2]));
1170                 for (out = samples, in = s_rawsamplesbuffer + b1 * 2, count = (RAWSAMPLESBUFFER - b1) * 2, i = 0;i < count;i++)
1171                         out[i] = in[i];
1172                 for (out = samples + (RAWSAMPLESBUFFER - b1) * 2, in = s_rawsamplesbuffer, count = b2 * 2, i = 0;i < count;i++)
1173                         out[i] = in[i];
1174                 //Con_Printf("S_RawSamples_Dequeue: buffer wrap %i %i\n", (RAWSAMPLESBUFFER - b1), b2);
1175         }
1176         else
1177         {
1178                 //memcpy(samples, s_rawsamplesbuffer + b1 * 2, l * sizeof(short[2]));
1179                 for (out = samples, in = s_rawsamplesbuffer + b1 * 2, count = l * 2, i = 0;i < count;i++)
1180                         out[i] = in[i];
1181                 //Con_Printf("S_RawSamples_Dequeue: normal      %i\n", l);
1182         }
1183         if (l < (int)length)
1184         {
1185                 memset(samples + l * 2, 0, (length - l) * sizeof(int[2]));
1186                 //Con_Printf("S_RawSamples_Dequeue: padding with %i samples\n", length - l);
1187         }
1188         s_rawsamplesbuffer_start = (s_rawsamplesbuffer_start + l) % RAWSAMPLESBUFFER;
1189         s_rawsamplesbuffer_count -= l;
1190 }
1191
1192 void S_RawSamples_ClearQueue(void)
1193 {
1194         s_rawsamplesbuffer_count = 0;
1195         s_rawsamplesbuffer_start = 0;
1196 }
1197
1198 int S_RawSamples_QueueWantsMore(void)
1199 {
1200         if (shm != NULL && s_rawsamplesbuffer_count < min(shm->format.speed >> 1, RAWSAMPLESBUFFER >> 1))
1201                 return RAWSAMPLESBUFFER - s_rawsamplesbuffer_count;
1202         else
1203                 return 0;
1204 }
1205
1206 void S_ResampleBuffer16Stereo(short *input, int inputlength, short *output, int outputlength)
1207 {
1208         if (inputlength != outputlength)
1209         {
1210                 int i, position, stopposition, step;
1211                 short *in, *out;
1212                 step = (float) inputlength * 256.0f / (float) outputlength;
1213                 position = 0;
1214                 stopposition = (inputlength - 1) << 8;
1215                 out = output;
1216                 for (i = 0;i < outputlength && position < stopposition;i++, position += step)
1217                 {
1218                         in = input + ((position >> 8) << 1);
1219                         out[0] = (((in[1] - in[0]) * (position & 255)) >> 8) + in[0];
1220                         out[1] = (((in[3] - in[2]) * (position & 255)) >> 8) + in[2];
1221                         out += 2;
1222                 }
1223                 stopposition = inputlength << 8;
1224                 for (i = 0;i < outputlength && position < stopposition;i++, position += step)
1225                 {
1226                         in = input + ((position >> 8) << 1);
1227                         out[0] = in[0];
1228                         out[1] = in[2];
1229                         out += 2;
1230                 }
1231         }
1232         else
1233                 memcpy(output, input, inputlength * sizeof(short[2]));
1234 }
1235
1236 int S_RawSamples_SampleRate(void)
1237 {
1238         return shm != NULL ? shm->format.speed : 0;
1239 }
1240