snd_main.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_main.c -- main control for any streaming sound output device
  21
  22 #include "quakedef.h"
  23
  24 #include "snd_main.h"
  25 #include "snd_ogg.h"
  26
  27
  28 void S_Play(void);
  29 void S_PlayVol(void);
  30 void S_Play2(void);
  31 void S_SoundList(void);
  32 void S_Update_();
  33
  34
  35 // =======================================================================
  36 // Internal sound data & structures
  37 // =======================================================================
  38
  39 channel_t channels[MAX_CHANNELS];
  40 unsigned int total_channels;
  41
  42 int snd_blocked = 0;
  43 cvar_t snd_initialized = { CVAR_READONLY, "snd_initialized", "0"};
  44 cvar_t snd_streaming = { CVAR_SAVE, "snd_streaming", "1"};
  45
  46 volatile dma_t *shm = 0;
  47 volatile dma_t sn;
  48
  49 vec3_t listener_origin;
  50 matrix4x4_t listener_matrix;
  51 vec_t sound_nominal_clip_dist=1000.0;
  52 mempool_t *snd_mempool;
  53
  54 int soundtime;
  55 int paintedtime;
  56
  57 // Linked list of known sfx
  58 sfx_t *known_sfx = NULL;
  59
  60 qboolean sound_started = false;
  61 qboolean sound_spatialized = false;
  62
  63 // Fake dma is a synchronous faking of the DMA progress used for
  64 // isolating performance in the renderer.
  65 qboolean fakedma = false;
  66
  67 cvar_t bgmvolume = {CVAR_SAVE, "bgmvolume", "1"};
  68 cvar_t volume = {CVAR_SAVE, "volume", "0.7"};
  69 cvar_t snd_staticvolume = {CVAR_SAVE, "snd_staticvolume", "1"};
  70
  71 cvar_t nosound = {0, "nosound", "0"};
  72 cvar_t snd_precache = {0, "snd_precache", "1"};
  73 cvar_t bgmbuffer = {0, "bgmbuffer", "4096"};
  74 cvar_t ambient_level = {0, "ambient_level", "0.3"};
  75 cvar_t ambient_fade = {0, "ambient_fade", "100"};
  76 cvar_t snd_noextraupdate = {0, "snd_noextraupdate", "0"};
  77 cvar_t snd_show = {0, "snd_show", "0"};
  78 cvar_t _snd_mixahead = {CVAR_SAVE, "_snd_mixahead", "0.1"};
  79 cvar_t snd_swapstereo = {CVAR_SAVE, "snd_swapstereo", "0"};
  80
  81 // Ambient sounds
  82 sfx_t* ambient_sfxs [2] = { NULL, NULL };
  83 const char* ambient_names [2] = { "sound/ambience/water1.wav", "sound/ambience/wind2.wav" };
  84
  85
  86 // ====================================================================
  87 // Functions
  88 // ====================================================================
  89
  90 void S_FreeSfx (sfx_t *sfx, qboolean force);
  91
  92
  93 void S_SoundInfo_f(void)
  94 {
  95         if (!sound_started)
  96         {
  97                 Con_Print("sound system not started\n");
  98                 return;
  99         }
 100
 101         Con_Printf("%5d stereo\n", shm->format.channels - 1);
 102         Con_Printf("%5d samples\n", shm->samples);
 103         Con_Printf("%5d samplepos\n", shm->samplepos);
 104         Con_Printf("%5d samplebits\n", shm->format.width * 8);
 105         Con_Printf("%5d speed\n", shm->format.speed);
 106         Con_Printf("%p dma buffer\n", shm->buffer);
 107         Con_Printf("%5u total_channels\n", total_channels);
 108 }
 109
 110
 111 void S_Startup(void)
 112 {
 113         if (!snd_initialized.integer)
 114                 return;
 115
 116         shm = &sn;
 117         memset((void *)shm, 0, sizeof(*shm));
 118
 119         // create a piece of DMA memory
 120         if (fakedma)
 121         {
 122                 shm->format.width = 2;
 123                 shm->format.speed = 22050;
 124                 shm->format.channels = 2;
 125                 shm->samples = 32768;
 126                 shm->samplepos = 0;
 127                 shm->buffer = Mem_Alloc(snd_mempool, shm->format.channels * shm->samples * shm->format.width);
 128         }
 129         else
 130         {
 131                 if (!SNDDMA_Init())
 132                 {
 133                         Con_Print("S_Startup: SNDDMA_Init failed.\n");
 134                         shm = NULL;
 135                         sound_started = false;
 136                         sound_spatialized = false;
 137                         return;
 138                 }
 139         }
 140
 141         sound_started = true;
 142
 143         Con_DPrintf("Sound sampling rate: %i\n", shm->format.speed);
 144 }
 145
 146 void S_Shutdown(void)
 147 {
 148         if (!sound_started)
 149                 return;
 150
 151         if (fakedma)
 152                 Mem_Free(shm->buffer);
 153         else
 154                 SNDDMA_Shutdown();
 155
 156         shm = NULL;
 157         sound_started = false;
 158         sound_spatialized = false;
 159 }
 160
 161 void S_Restart_f(void)
 162 {
 163         S_Shutdown();
 164         S_Startup();
 165 }
 166
 167 /*
 168 ================
 169 S_Init
 170 ================
 171 */
 172 void S_Init(void)
 173 {
 174         Con_DPrint("\nSound Initialization\n");
 175
 176         Cvar_RegisterVariable(&volume);
 177         Cvar_RegisterVariable(&bgmvolume);
 178         Cvar_RegisterVariable(&snd_staticvolume);
 179
 180 // COMMANDLINEOPTION: Sound: -nosound disables sound (including CD audio)
 181         if (COM_CheckParm("-nosound") || COM_CheckParm("-safe"))
 182                 return;
 183
 184         snd_mempool = Mem_AllocPool("sound", 0, NULL);
 185
 186 // COMMANDLINEOPTION: Sound: -simsound runs sound mixing but with no output
 187         if (COM_CheckParm("-simsound"))
 188                 fakedma = true;
 189
 190         Cmd_AddCommand("play", S_Play);
 191         Cmd_AddCommand("play2", S_Play2);
 192         Cmd_AddCommand("playvol", S_PlayVol);
 193         Cmd_AddCommand("stopsound", S_StopAllSounds);
 194         Cmd_AddCommand("soundlist", S_SoundList);
 195         Cmd_AddCommand("soundinfo", S_SoundInfo_f);
 196         Cmd_AddCommand("snd_restart", S_Restart_f);
 197
 198         Cvar_RegisterVariable(&nosound);
 199         Cvar_RegisterVariable(&snd_precache);
 200         Cvar_RegisterVariable(&snd_initialized);
 201         Cvar_RegisterVariable(&snd_streaming);
 202         Cvar_RegisterVariable(&bgmbuffer);
 203         Cvar_RegisterVariable(&ambient_level);
 204         Cvar_RegisterVariable(&ambient_fade);
 205         Cvar_RegisterVariable(&snd_noextraupdate);
 206         Cvar_RegisterVariable(&snd_show);
 207         Cvar_RegisterVariable(&_snd_mixahead);
 208         Cvar_RegisterVariable(&snd_swapstereo); // for people with backwards sound wiring
 209
 210         Cvar_SetValueQuick(&snd_initialized, true);
 211
 212         known_sfx = NULL;
 213
 214         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 215         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 216
 217         OGG_OpenLibrary ();
 218 }
 219
 220
 221 /*
 222 ================
 223 S_Terminate
 224
 225 Shutdown and free all resources
 226 ================
 227 */
 228 void S_Terminate (void)
 229 {
 230         S_Shutdown ();
 231         OGG_CloseLibrary ();
 232
 233         // Free all SFXs
 234         while (known_sfx != NULL)
 235                 S_FreeSfx (known_sfx, true);
 236
 237         Cvar_SetValueQuick (&snd_initialized, false);
 238         Mem_FreePool (&snd_mempool);
 239 }
 240
 241
 242 // =======================================================================
 243 // Load a sound
 244 // =======================================================================
 245
 246 /*
 247 ==================
 248 S_FindName
 249
 250 ==================
 251 */
 252 sfx_t *S_FindName (const char *name)
 253 {
 254         sfx_t *sfx;
 255
 256         if (!snd_initialized.integer)
 257                 return NULL;
 258
 259         if (strlen (name) >= sizeof (sfx->name))
 260         {
 261                 Con_Printf ("S_FindName: sound name too long (%s)", name);
 262                 return NULL;
 263         }
 264
 265         // Look for this sound in the list of known sfx
 266         for (sfx = known_sfx; sfx != NULL; sfx = sfx->next)
 267                 if(!strcmp (sfx->name, name))
 268                         return sfx;
 269
 270         // Add a sfx_t struct for this sound
 271         sfx = Mem_Alloc (snd_mempool, sizeof (*sfx));
 272         memset (sfx, 0, sizeof(*sfx));
 273         strlcpy (sfx->name, name, sizeof (sfx->name));
 274         sfx->next = known_sfx;
 275         known_sfx = sfx;
 276
 277         return sfx;
 278 }
 279
 280
 281 /*
 282 ==================
 283 S_FreeSfx
 284
 285 ==================
 286 */
 287 void S_FreeSfx (sfx_t *sfx, qboolean force)
 288 {
 289         // Never free a locked sfx unless forced
 290         if (!force && (sfx->locks > 0 || (sfx->flags & SFXFLAG_PERMANENTLOCK)))
 291                 return;
 292
 293         Con_DPrintf ("S_FreeSfx: freeing %s\n", sfx->name);
 294
 295         // Remove it from the list of known sfx
 296         if (sfx == known_sfx)
 297                 known_sfx = known_sfx->next;
 298         else
 299         {
 300                 sfx_t *prev_sfx;
 301
 302                 for (prev_sfx = known_sfx; prev_sfx != NULL; prev_sfx = prev_sfx->next)
 303                         if (prev_sfx->next == sfx)
 304                         {
 305                                 prev_sfx->next = sfx->next;
 306                                 break;
 307                         }
 308                 if (prev_sfx == NULL)
 309                 {
 310                         Con_Printf ("S_FreeSfx: Can't find SFX %s in the list!\n", sfx->name);
 311                         return;
 312                 }
 313         }
 314
 315         // Free it
 316         Mem_FreePool (&sfx->mempool);
 317         Mem_Free (sfx);
 318 }
 319
 320
 321 /*
 322 ==================
 323 S_ServerSounds
 324
 325 ==================
 326 */
 327 void S_ServerSounds (char serversound [][MAX_QPATH], unsigned int numsounds)
 328 {
 329         sfx_t *sfx;
 330         sfx_t *sfxnext;
 331         unsigned int i;
 332
 333         // Start the ambient sounds and make them loop
 334         for (i = 0; i < sizeof (ambient_sfxs) / sizeof (ambient_sfxs[0]); i++)
 335         {
 336                 // Precache it if it's not done (request a lock to make sure it will never be freed)
 337                 if (ambient_sfxs[i] == NULL)
 338                         ambient_sfxs[i] = S_PrecacheSound (ambient_names[i], false, true);
 339                 if (ambient_sfxs[i] != NULL)
 340                 {
 341                         // Add a lock to the SFX while playing. It will be
 342                         // removed by S_StopAllSounds at the end of the level
 343                         S_LockSfx (ambient_sfxs[i]);
 344
 345                         channels[i].sfx = ambient_sfxs[i];
 346                         channels[i].flags |= CHANNELFLAG_FORCELOOP;
 347                         channels[i].master_vol = 0;
 348                 }
 349         }
 350
 351         // Remove 1 lock from all sfx with the SFXFLAG_SERVERSOUND flag, and remove the flag
 352         for (sfx = known_sfx; sfx != NULL; sfx = sfx->next)
 353                 if (sfx->flags & SFXFLAG_SERVERSOUND)
 354                 {
 355                         S_UnlockSfx (sfx);
 356                         sfx->flags &= ~SFXFLAG_SERVERSOUND;
 357                 }
 358
 359         // Add 1 lock and the SFXFLAG_SERVERSOUND flag to each sfx in "serversound"
 360         for (i = 1; i < numsounds; i++)
 361         {
 362                 sfx = S_FindName (serversound[i]);
 363                 if (sfx != NULL)
 364                 {
 365                         S_LockSfx (sfx);
 366                         sfx->flags |= SFXFLAG_SERVERSOUND;
 367                 }
 368         }
 369
 370         // Free all unlocked sfx
 371         for (sfx = known_sfx;sfx;sfx = sfxnext)
 372         {
 373                 sfxnext = sfx->next;
 374                 S_FreeSfx (sfx, false);
 375         }
 376 }
 377
 378
 379 /*
 380 ==================
 381 S_PrecacheSound
 382
 383 ==================
 384 */
 385 sfx_t *S_PrecacheSound (const char *name, qboolean complain, qboolean lock)
 386 {
 387         sfx_t *sfx;
 388
 389         if (!snd_initialized.integer)
 390                 return NULL;
 391
 392         sfx = S_FindName (name);
 393         if (sfx == NULL)
 394                 return NULL;
 395
 396         if (lock)
 397                 S_LockSfx (sfx);
 398
 399         if (!nosound.integer && snd_precache.integer)
 400                 S_LoadSound(sfx, complain);
 401
 402         return sfx;
 403 }
 404
 405 /*
 406 ==================
 407 S_LockSfx
 408
 409 Add a lock to a SFX
 410 ==================
 411 */
 412 void S_LockSfx (sfx_t *sfx)
 413 {
 414         sfx->locks++;
 415 }
 416
 417 /*
 418 ==================
 419 S_UnlockSfx
 420
 421 Remove a lock from a SFX
 422 ==================
 423 */
 424 void S_UnlockSfx (sfx_t *sfx)
 425 {
 426         sfx->locks--;
 427 }
 428
 429
 430 //=============================================================================
 431
 432 /*
 433 =================
 434 SND_PickChannel
 435
 436 Picks a channel based on priorities, empty slots, number of channels
 437 =================
 438 */
 439 channel_t *SND_PickChannel(int entnum, int entchannel)
 440 {
 441         int ch_idx;
 442         int first_to_die;
 443         int life_left;
 444         channel_t* ch;
 445
 446 // Check for replacement sound, or find the best one to replace
 447         first_to_die = -1;
 448         life_left = 0x7fffffff;
 449         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
 450         {
 451                 ch = &channels[ch_idx];
 452                 if (entchannel != 0             // channel 0 never overrides
 453                 && ch->entnum == entnum
 454                 && (ch->entchannel == entchannel || entchannel == -1) )
 455                 {       // always override sound from same entity
 456                         first_to_die = ch_idx;
 457                         break;
 458                 }
 459
 460                 // don't let monster sounds override player sounds
 461                 if (ch->entnum == cl.viewentity && entnum != cl.viewentity && ch->sfx)
 462                         continue;
 463
 464                 // don't override looped sounds
 465                 if ((ch->flags & CHANNELFLAG_FORCELOOP) != 0 ||
 466                         (ch->sfx != NULL && ch->sfx->loopstart >= 0))
 467                         continue;
 468
 469                 if (ch->end - paintedtime < life_left)
 470                 {
 471                         life_left = ch->end - paintedtime;
 472                         first_to_die = ch_idx;
 473                 }
 474         }
 475
 476         if (first_to_die == -1)
 477                 return NULL;
 478
 479         S_StopChannel (first_to_die);
 480
 481         return &channels[first_to_die];
 482 }
 483
 484 /*
 485 =================
 486 SND_Spatialize
 487
 488 Spatializes a channel
 489 =================
 490 */
 491 void SND_Spatialize(channel_t *ch, qboolean isstatic)
 492 {
 493         vec_t dist, scale, pan;
 494         vec3_t source_vec;
 495
 496         // anything coming from the view entity will always be full volume
 497         // LordHavoc: make sounds with ATTN_NONE have no spatialization
 498         if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
 499         {
 500                 ch->leftvol = ch->master_vol;
 501                 ch->rightvol = ch->master_vol;
 502         }
 503         else
 504         {
 505                 // update sound origin if we know about the entity
 506                 if (ch->entnum > 0 && cls.state == ca_connected && cl_entities[ch->entnum].render.model)
 507                 {
 508                         //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].persistent.trail_origin[0], cl_entities[ch->entnum].persistent.trail_origin[1], cl_entities[ch->entnum].persistent.trail_origin[2]);
 509                         VectorCopy(cl_entities[ch->entnum].persistent.trail_origin, ch->origin);
 510                 }
 511
 512                 // calculate stereo seperation and distance attenuation
 513                 Matrix4x4_Transform(&listener_matrix, ch->origin, source_vec);
 514                 dist = VectorNormalizeLength(source_vec);
 515                 // distance
 516                 scale = ch->master_vol * (1.0 - (dist * ch->dist_mult));
 517                 // panning
 518                 pan = scale * source_vec[1];
 519                 // calculate the volumes
 520                 ch->leftvol = (int) (scale + pan);
 521                 ch->rightvol = (int) (scale - pan);
 522                 //Con_Printf("%f %f %f:%f %f %f:%f %f:%d %d\n", ch->origin[0], ch->origin[1], ch->origin[2], source_vec[0], source_vec[1], source_vec[2], scale, pan, ch->leftvol, ch->rightvol);
 523         }
 524
 525         // Adjust volume of static sounds
 526         if (isstatic)
 527         {
 528                 ch->leftvol *= snd_staticvolume.value;
 529                 ch->rightvol *= snd_staticvolume.value;
 530         }
 531
 532         // clamp volumes
 533         ch->leftvol = bound(0, ch->leftvol, 255);
 534         ch->rightvol = bound(0, ch->rightvol, 255);
 535 }
 536
 537
 538 // =======================================================================
 539 // Start a sound effect
 540 // =======================================================================
 541
 542 void S_PlaySfxOnChannel (sfx_t *sfx, channel_t *target_chan, unsigned int flags, vec3_t origin, float fvol, float attenuation, qboolean isstatic)
 543 {
 544         // Initialize the channel
 545         memset (target_chan, 0, sizeof (*target_chan));
 546         VectorCopy (origin, target_chan->origin);
 547         target_chan->master_vol = fvol * 255;
 548         target_chan->sfx = sfx;
 549         target_chan->end = paintedtime + sfx->total_length;
 550         target_chan->lastptime = paintedtime;
 551         target_chan->flags = flags;
 552
 553         // If it's a static sound
 554         if (isstatic)
 555         {
 556                 if (sfx->loopstart == -1)
 557                         Con_DPrintf("Quake compatibility warning: Static sound \"%s\" is not looped\n", sfx->name);
 558                 target_chan->dist_mult = attenuation / (64.0f * sound_nominal_clip_dist);
 559         }
 560         else
 561                 target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
 562
 563         // Lock the SFX during play
 564         S_LockSfx (sfx);
 565 }
 566
 567
 568 int S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 569 {
 570         channel_t *target_chan, *check;
 571         int             ch_idx;
 572         int             skip;
 573
 574         if (!sound_started || !sfx || nosound.integer)
 575                 return -1;
 576         if (!sfx->fetcher)
 577         {
 578                 Con_DPrintf ("S_StartSound: \"%s\" hasn't been precached\n", sfx->name);
 579                 return -1;
 580         }
 581
 582         if (entnum && entnum >= cl_max_entities)
 583                 CL_ExpandEntities(entnum);
 584
 585         // Pick a channel to play on
 586         target_chan = SND_PickChannel(entnum, entchannel);
 587         if (!target_chan)
 588                 return -1;
 589
 590         S_PlaySfxOnChannel (sfx, target_chan, CHANNELFLAG_NONE, origin, fvol, attenuation, false);
 591         target_chan->entnum = entnum;
 592         target_chan->entchannel = entchannel;
 593
 594         SND_Spatialize(target_chan, false);
 595
 596         // if an identical sound has also been started this frame, offset the pos
 597         // a bit to keep it from just making the first one louder
 598         check = &channels[NUM_AMBIENTS];
 599         for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
 600         {
 601                 if (check == target_chan)
 602                         continue;
 603                 if (check->sfx == sfx && !check->pos)
 604                 {
 605                         skip = 0.1 * sfx->format.speed;
 606                         if (skip > (int)sfx->total_length)
 607                                 skip = (int)sfx->total_length;
 608                         if (skip > 0)
 609                                 skip = rand() % skip;
 610                         target_chan->pos += skip;
 611                         target_chan->end -= skip;
 612                         break;
 613                 }
 614         }
 615
 616         return (target_chan - channels);
 617 }
 618
 619 void S_StopChannel (unsigned int channel_ind)
 620 {
 621         channel_t *ch;
 622
 623         if (channel_ind >= total_channels)
 624                 return;
 625
 626         ch = &channels[channel_ind];
 627         if (ch->sfx != NULL)
 628         {
 629                 sfx_t *sfx = ch->sfx;
 630
 631                 if (sfx->fetcher != NULL)
 632                 {
 633                         snd_fetcher_end_t fetcher_end = sfx->fetcher->end;
 634                         if (fetcher_end != NULL)
 635                                 fetcher_end (ch);
 636                 }
 637
 638                 // Remove the lock it holds
 639                 S_UnlockSfx (sfx);
 640
 641                 ch->sfx = NULL;
 642         }
 643         ch->end = 0;
 644 }
 645
 646
 647 qboolean S_SetChannelFlag (unsigned int ch_ind, unsigned int flag, qboolean value)
 648 {
 649         if (ch_ind >= total_channels)
 650                 return false;
 651
 652         if (flag != CHANNELFLAG_FORCELOOP &&
 653                 flag != CHANNELFLAG_PAUSED &&
 654                 flag != CHANNELFLAG_FULLVOLUME)
 655                 return false;
 656
 657         if (value)
 658                 channels[ch_ind].flags |= flag;
 659         else
 660                 channels[ch_ind].flags &= ~flag;
 661
 662         return true;
 663 }
 664
 665 void S_StopSound(int entnum, int entchannel)
 666 {
 667         unsigned int i;
 668
 669         for (i = 0; i < MAX_DYNAMIC_CHANNELS; i++)
 670                 if (channels[i].entnum == entnum && channels[i].entchannel == entchannel)
 671                 {
 672                         S_StopChannel (i);
 673                         return;
 674                 }
 675 }
 676
 677 void S_StopAllSounds (void)
 678 {
 679         unsigned int i;
 680         unsigned char *pbuf;
 681
 682         if (!sound_started)
 683                 return;
 684
 685         for (i = 0; i < total_channels; i++)
 686                 S_StopChannel (i);
 687
 688         total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;   // no statics
 689         memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
 690
 691         // Clear sound buffer
 692         pbuf = S_LockBuffer();
 693         if (pbuf != NULL)
 694         {
 695                 int setsize = shm->samples * shm->format.width;
 696                 int     clear = (shm->format.width == 1) ? 0x80 : 0;
 697
 698                 // FIXME: is it (still) true? (check with OSS and ALSA)
 699                 // on i586/i686 optimized versions of glibc, glibc *wrongly* IMO,
 700                 // reads the memory area before writing to it causing a seg fault
 701                 // since the memory is PROT_WRITE only and not PROT_READ|PROT_WRITE
 702                 //memset(shm->buffer, clear, shm->samples * shm->format.width);
 703                 while (setsize--)
 704                         *pbuf++ = clear;
 705
 706                 S_UnlockBuffer ();
 707         }
 708 }
 709
 710 void S_PauseGameSounds (qboolean toggle)
 711 {
 712         unsigned int i;
 713
 714         for (i = 0; i < total_channels; i++)
 715         {
 716                 channel_t *ch;
 717
 718                 ch = &channels[i];
 719                 if (ch->sfx != NULL && ! (ch->flags & CHANNELFLAG_LOCALSOUND))
 720                         S_SetChannelFlag (i, CHANNELFLAG_PAUSED, toggle);
 721         }
 722 }
 723
 724 void S_SetChannelVolume (unsigned int ch_ind, float fvol)
 725 {
 726         channels[ch_ind].master_vol = fvol * 255;
 727 }
 728
 729
 730 /*
 731 =================
 732 S_StaticSound
 733 =================
 734 */
 735 void S_StaticSound (sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
 736 {
 737         channel_t       *target_chan;
 738
 739         if (!sound_started || !sfx || nosound.integer)
 740                 return;
 741         if (!sfx->fetcher)
 742         {
 743                 Con_DPrintf ("S_StaticSound: \"%s\" hasn't been precached\n", sfx->name);
 744                 return;
 745         }
 746
 747         if (total_channels == MAX_CHANNELS)
 748         {
 749                 Con_Print("S_StaticSound: total_channels == MAX_CHANNELS\n");
 750                 return;
 751         }
 752
 753         target_chan = &channels[total_channels++];
 754         S_PlaySfxOnChannel (sfx, target_chan, CHANNELFLAG_FORCELOOP, origin, fvol, attenuation, true);
 755
 756         SND_Spatialize (target_chan, true);
 757 }
 758
 759
 760 //=============================================================================
 761
 762 /*
 763 ===================
 764 S_UpdateAmbientSounds
 765
 766 ===================
 767 */
 768 void S_UpdateAmbientSounds (void)
 769 {
 770         float           vol;
 771         int                     ambient_channel;
 772         channel_t       *chan;
 773         qbyte           ambientlevels[NUM_AMBIENTS];
 774
 775         if (ambient_level.value <= 0 || !cl.worldmodel || !cl.worldmodel->brush.AmbientSoundLevelsForPoint)
 776                 return;
 777
 778         cl.worldmodel->brush.AmbientSoundLevelsForPoint(cl.worldmodel, listener_origin, ambientlevels, sizeof(ambientlevels));
 779
 780         // Calc ambient sound levels
 781         for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
 782         {
 783                 chan = &channels[ambient_channel];
 784                 if (chan->sfx == NULL || chan->sfx->fetcher == NULL)
 785                         continue;
 786
 787                 vol = ambient_level.value * ambientlevels[ambient_channel];
 788                 if (vol < 8)
 789                         vol = 0;
 790
 791                 // Don't adjust volume too fast
 792                 if (chan->master_vol < vol)
 793                 {
 794                         chan->master_vol += host_realframetime * ambient_fade.value;
 795                         if (chan->master_vol > vol)
 796                                 chan->master_vol = vol;
 797                 }
 798                 else if (chan->master_vol > vol)
 799                 {
 800                         chan->master_vol -= host_realframetime * ambient_fade.value;
 801                         if (chan->master_vol < vol)
 802                                 chan->master_vol = vol;
 803                 }
 804
 805                 chan->leftvol = chan->rightvol = chan->master_vol;
 806         }
 807 }
 808
 809
 810 /*
 811 ============
 812 S_Update
 813
 814 Called once each time through the main loop
 815 ============
 816 */
 817 void S_Update(const matrix4x4_t *listenermatrix)
 818 {
 819         unsigned int i, j, total;
 820         channel_t *ch, *combine;
 821
 822         if (!snd_initialized.integer || (snd_blocked > 0))
 823                 return;
 824
 825         Matrix4x4_Invert_Simple(&listener_matrix, listenermatrix);
 826         Matrix4x4_OriginFromMatrix(listenermatrix, listener_origin);
 827
 828         // update general area ambient sound sources
 829         S_UpdateAmbientSounds ();
 830
 831         combine = NULL;
 832
 833         // update spatialization for static and dynamic sounds
 834         ch = channels+NUM_AMBIENTS;
 835         for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
 836         {
 837                 if (!ch->sfx)
 838                         continue;
 839                 SND_Spatialize(ch, i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS);         // respatialize channel
 840                 if (!ch->leftvol && !ch->rightvol)
 841                         continue;
 842
 843                 // try to combine static sounds with a previous channel of the same
 844                 // sound effect so we don't mix five torches every frame
 845                 if (i > MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
 846                 {
 847                         // see if it can just use the last one
 848                         if (combine && combine->sfx == ch->sfx)
 849                         {
 850                                 combine->leftvol += ch->leftvol;
 851                                 combine->rightvol += ch->rightvol;
 852                                 ch->leftvol = ch->rightvol = 0;
 853                                 continue;
 854                         }
 855                         // search for one
 856                         combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
 857                         for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
 858                                 if (combine->sfx == ch->sfx)
 859                                         break;
 860
 861                         if (j == total_channels)
 862                                 combine = NULL;
 863                         else
 864                         {
 865                                 if (combine != ch)
 866                                 {
 867                                         combine->leftvol += ch->leftvol;
 868                                         combine->rightvol += ch->rightvol;
 869                                         ch->leftvol = ch->rightvol = 0;
 870                                 }
 871                                 continue;
 872                         }
 873                 }
 874         }
 875
 876         sound_spatialized = true;
 877
 878         // debugging output
 879         if (snd_show.integer)
 880         {
 881                 total = 0;
 882                 ch = channels;
 883                 for (i=0 ; i<total_channels; i++, ch++)
 884                         if (ch->sfx && (ch->leftvol || ch->rightvol) )
 885                                 total++;
 886
 887                 Con_Printf("----(%u)----\n", total);
 888         }
 889
 890         S_Update_();
 891 }
 892
 893 void GetSoundtime(void)
 894 {
 895         int             samplepos;
 896         static  int             buffers;
 897         static  int             oldsamplepos;
 898         int             fullsamples;
 899
 900         fullsamples = shm->samples / shm->format.channels;
 901
 902         // it is possible to miscount buffers if it has wrapped twice between
 903         // calls to S_Update.  Oh well.
 904         samplepos = SNDDMA_GetDMAPos();
 905
 906         if (samplepos < oldsamplepos)
 907         {
 908                 buffers++;                                      // buffer wrapped
 909
 910                 if (paintedtime > 0x40000000)
 911                 {       // time to chop things off to avoid 32 bit limits
 912                         buffers = 0;
 913                         paintedtime = fullsamples;
 914                         S_StopAllSounds ();
 915                 }
 916         }
 917         oldsamplepos = samplepos;
 918
 919         soundtime = buffers * fullsamples + samplepos / shm->format.channels;
 920 }
 921
 922 void S_ExtraUpdate (void)
 923 {
 924         if (snd_noextraupdate.integer || !sound_spatialized)
 925                 return;
 926
 927         S_Update_();
 928 }
 929
 930 void S_Update_(void)
 931 {
 932         unsigned        endtime;
 933         int                             samps;
 934
 935         if (!sound_started || (snd_blocked > 0))
 936                 return;
 937
 938         // Updates DMA time
 939         GetSoundtime();
 940
 941         // check to make sure that we haven't overshot
 942         if (paintedtime < soundtime)
 943                 paintedtime = soundtime;
 944
 945         // mix ahead of current position
 946         endtime = soundtime + _snd_mixahead.value * shm->format.speed;
 947         samps = shm->samples >> (shm->format.channels - 1);
 948         if (endtime > (unsigned int)(soundtime + samps))
 949                 endtime = soundtime + samps;
 950
 951         S_PaintChannels (endtime);
 952
 953         SNDDMA_Submit ();
 954 }
 955
 956 /*
 957 ===============================================================================
 958
 959 console functions
 960
 961 ===============================================================================
 962 */
 963
 964 static void S_Play_Common(float fvol, float attenuation)
 965 {
 966         int     i, ch_ind;
 967         char name[256];
 968         sfx_t   *sfx;
 969
 970         i = 1;
 971         while (i<Cmd_Argc())
 972         {
 973                 // Get the name
 974                 strlcpy(name, Cmd_Argv(i), sizeof(name));
 975                 if (!strrchr(name, '.'))
 976                         strlcat(name, ".wav", sizeof(name));
 977                 i++;
 978
 979                 // If we need to get the volume from the command line
 980                 if (fvol == -1.0f)
 981                 {
 982                         fvol = atof(Cmd_Argv(i));
 983                         i++;
 984                 }
 985
 986                 sfx = S_PrecacheSound (name, true, false);
 987                 if (sfx)
 988                 {
 989                         ch_ind = S_StartSound(-1, 0, sfx, listener_origin, fvol, attenuation);
 990
 991                         // Free the sfx if the file didn't exist
 992                         if (ch_ind < 0)
 993                                 S_FreeSfx (sfx, false);
 994                         else
 995                                 channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
 996                 }
 997         }
 998 }
 999
1000 void S_Play(void)
1001 {
1002         S_Play_Common (1.0f, 1.0f);
1003 }
1004
1005 void S_Play2(void)
1006 {
1007         S_Play_Common (1.0f, 0.0f);
1008 }
1009
1010 void S_PlayVol(void)
1011 {
1012         S_Play_Common (-1.0f, 0.0f);
1013 }
1014
1015 void S_SoundList(void)
1016 {
1017         unsigned int i;
1018         sfx_t   *sfx;
1019         int             size, total;
1020
1021         total = 0;
1022         for (sfx = known_sfx, i = 0; sfx != NULL; sfx = sfx->next, i++)
1023         {
1024                 if (sfx->fetcher != NULL)
1025                 {
1026                         size = (int)sfx->mempool->totalsize;
1027                         total += size;
1028                         Con_Printf ("%c%c%c%c(%2db, %6s) %8i : %s\n",
1029                                                 (sfx->loopstart >= 0) ? 'L' : ' ',
1030                                                 (sfx->flags & SFXFLAG_STREAMED) ? 'S' : ' ',
1031                                                 (sfx->locks > 0) ? 'K' : ' ',
1032                                                 (sfx->flags & SFXFLAG_PERMANENTLOCK) ? 'P' : ' ',
1033                                                 sfx->format.width * 8,
1034                                                 (sfx->format.channels == 1) ? "mono" : "stereo",
1035                                                 size,
1036                                                 sfx->name);
1037                 }
1038                 else
1039                         Con_Printf ("    (  unknown  ) unloaded : %s\n", sfx->name);
1040         }
1041         Con_Printf("Total resident: %i\n", total);
1042 }
1043
1044
1045 qboolean S_LocalSound (const char *sound)
1046 {
1047         sfx_t   *sfx;
1048         int             ch_ind;
1049
1050         if (!snd_initialized.integer || nosound.integer)
1051                 return true;
1052
1053         sfx = S_PrecacheSound (sound, true, false);
1054         if (!sfx)
1055         {
1056                 Con_Printf("S_LocalSound: can't precache %s\n", sound);
1057                 return false;
1058         }
1059
1060         // Local sounds must not be freed
1061         sfx->flags |= SFXFLAG_PERMANENTLOCK;
1062
1063         ch_ind = S_StartSound (cl.viewentity, 0, sfx, vec3_origin, 1, 0);
1064         if (ch_ind < 0)
1065                 return false;
1066
1067         channels[ch_ind].flags |= CHANNELFLAG_LOCALSOUND;
1068         return true;
1069 }