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