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glquake/source/snd_dma.c

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/*
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// snd_dma.c -- main control for any streaming sound output device
#include "quakedef.h"
void S_Play_f(void);
void S_PlayVol_f(void);
void S_SoundList_f(void);
void S_Update_();
void S_StopAllSounds(qboolean clear);
void S_StopAllSoundsC_f(void);
void S_VolumeDown_f (void); // Baker 3.60 - from JoeQuake 0.15
void S_VolumeUp_f (void); // Baker 3.60 - from JoeQuake 0.15
// =======================================================================
// Internal sound data & structures
// =======================================================================
channel_t channels[MAX_CHANNELS];
int total_channels;
int snd_blocked = 0;
static qboolean snd_ambient = 1;
qboolean snd_initialized = false;
// pointer should go away
volatile dma_t *shm = 0;
volatile dma_t sn;
vec3_t listener_origin;
vec3_t listener_forward;
vec3_t listener_right;
vec3_t listener_up;
vec_t sound_nominal_clip_dist=1500.0; // JPG - changed this from 1000 to 15000 (I'm 99% sure that's what it was in 1.06)
int soundtime; // sample PAIRS
int paintedtime; // sample PAIRS
sfx_t *known_sfx; // hunk allocated [MAX_SFX]
int num_sfx;
sfx_t *ambient_sfx[NUM_AMBIENTS];
int desired_speed = 11025;
int desired_bits = 16;
int sound_started=0;
cvar_t bgmvolume = {"bgmvolume", "1", true};
cvar_t bgmtype = {"bgmtype", "cd", true}; // cd or none
cvar_t volume = {"volume", "0.7", true};
cvar_t nosound = {"nosound", "0"};
cvar_t precache = {"precache", "1"};
cvar_t loadas8bit = {"loadas8bit", "0"};
cvar_t bgmbuffer = {"bgmbuffer", "4096"};
cvar_t ambient_level = {"ambient_level", "0.3", true}; // Baker 3.60 - Save to config
cvar_t ambient_fade = {"ambient_fade", "100"};
cvar_t snd_noextraupdate = {"snd_noextraupdate", "0"};
cvar_t snd_show = {"snd_show", "0"};
cvar_t _snd_mixahead = {"_snd_mixahead", "0.1", true};
// ====================================================================
// User-setable variables
// ====================================================================
// Fake dma is a synchronous faking of the DMA progress used for
// isolating performance in the renderer. The fakedma_updates is
// number of times S_Update() is called per second.
qboolean fakedma = false;
int fakedma_updates = 15;
void S_AmbientOff (void)
{
snd_ambient = false;
}
void S_AmbientOn (void)
{
snd_ambient = true;
}
void S_SoundInfo_f(void)
{
if (!sound_started || !shm)
{
Con_Printf ("sound system not started\n");
return;
}
Con_Printf("%5d stereo\n", shm->channels - 1);
Con_Printf("%5d samples\n", shm->samples);
Con_Printf("%5d samplepos\n", shm->samplepos);
Con_Printf("%5d samplebits\n", shm->samplebits);
Con_Printf("%5d submission_chunk\n", shm->submission_chunk);
Con_Printf("%5d speed\n", shm->speed);
Con_Printf("0x%x dma buffer\n", shm->buffer);
Con_Printf("%5d total_channels\n", total_channels);
}
/*
================
S_Startup
================
*/
void S_Startup (void)
{
int rc;
if (!snd_initialized)
return;
if (!fakedma)
{
if (!(rc = SNDDMA_Init()))
{
Con_Printf("S_Startup: SNDDMA_Init failed.\n");
sound_started = 0;
return;
}
}
sound_started = 1;
}
/*
================
S_Init
================
*/
void CDAudioSetVolume (void);
void S_Init (void)
{
if (COM_CheckParm("-nosound"))
return;
Con_Printf("\nSound Initialization\n");
if (COM_CheckParm("-simsound"))
fakedma = true;
Cmd_AddCommand("play", S_Play_f);
Cmd_AddCommand("playvol", S_PlayVol_f);
Cmd_AddCommand("stopsound", S_StopAllSoundsC_f);
Cmd_AddCommand("soundlist", S_SoundList_f);
Cmd_AddCommand("soundinfo", S_SoundInfo_f);
Cmd_AddCommand ("volumedown", S_VolumeDown_f); // Baker 3.60 - from JoeQuake 0.15
Cmd_AddCommand ("volumeup", S_VolumeUp_f); // Baker 3.60 - from JoeQuake 0.15
Cvar_RegisterVariable(&nosound);
Cvar_RegisterVariable(&volume);
Cvar_RegisterVariable(&precache);
Cvar_RegisterVariable(&loadas8bit);
Cvar_RegisterVariable(&bgmvolume);
Cvar_RegisterVariable(&bgmbuffer);
Cvar_RegisterVariable(&ambient_level);
Cvar_RegisterVariable(&ambient_fade);
Cvar_RegisterVariable(&snd_noextraupdate);
Cvar_RegisterVariable(&snd_show);
Cvar_RegisterVariable(&_snd_mixahead);
//if (host_parms.memsize < 0x800000)
{
Cvar_Set ("loadas8bit", "1");
Con_Printf ("loading all sounds as 8bit\n");
}
snd_initialized = true;
S_Startup ();
SND_InitScaletable ();
known_sfx = Hunk_AllocName (MAX_SFX*sizeof(sfx_t), "sfx_t");
num_sfx = 0;
// create a piece of DMA memory
if (fakedma)
{
shm = (void *) Hunk_AllocName(sizeof(*shm), "shm");
shm->splitbuffer = 0;
shm->samplebits = 16;
shm->speed = 22050;
shm->channels = 2;
shm->samples = 32768;
shm->samplepos = 0;
shm->soundalive = true;
shm->gamealive = true;
shm->submission_chunk = 1;
shm->buffer = Hunk_AllocName(1<<16, "shmbuf");
}
Con_Printf ("Sound sampling rate: %i Hz\n", shm->speed);
// provides a tick sound until washed clean
// if (shm->buffer)
// shm->buffer[4] = shm->buffer[5] = 0x7f; // force a pop for debugging
S_StopAllSounds (true);
}
// =======================================================================
// Shutdown sound engine
// =======================================================================
void S_Shutdown(void)
{
if (!sound_started)
return;
if (shm)
shm->gamealive = 0;
shm = 0;
sound_started = 0;
if (!fakedma)
SNDDMA_Shutdown();
}
// =======================================================================
// Load a sound
// =======================================================================
/*
==================
S_FindName
==================
*/
sfx_t *S_FindName (char *name)
{
int i;
sfx_t *sfx;
if (!name)
Sys_Error ("S_FindName: NULL\n");
if (strlen(name) >= MAX_QPATH)
Sys_Error ("Sound name too long: %s", name);
// see if already loaded
for (i=0 ; i < num_sfx ; i++)
if (!strcmp(known_sfx[i].name, name))
return &known_sfx[i];
if (num_sfx == MAX_SFX)
Sys_Error ("S_FindName: out of sfx_t");
sfx = &known_sfx[i];
strcpy (sfx->name, name);
num_sfx++;
return sfx;
}
/*
==================
S_TouchSound
==================
*/
void S_TouchSound (char *name)
{
sfx_t *sfx;
if (!sound_started)
return;
sfx = S_FindName (name);
Cache_Check (&sfx->cache);
}
/*
==================
S_PrecacheSound
==================
*/
sfx_t *S_PrecacheSound (char *name)
{
sfx_t *sfx;
if (!sound_started || nosound.value)
return NULL;
sfx = S_FindName (name);
// cache it in
if (precache.value)
S_LoadSound (sfx);
return sfx;
}
//=============================================================================
/*
=================
SND_PickChannel
=================
*/
channel_t *SND_PickChannel(int entnum, int entchannel)
{
int ch_idx;
int first_to_die;
int life_left;
// Check for replacement sound, or find the best one to replace
first_to_die = -1;
life_left = 0x7fffffff;
for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++)
{
if (entchannel != 0 // channel 0 never overrides
&& channels[ch_idx].entnum == entnum
&& (channels[ch_idx].entchannel == entchannel || entchannel == -1) )
{ // always override sound from same entity
first_to_die = ch_idx;
break;
}
// don't let monster sounds override player sounds
if (channels[ch_idx].entnum == cl.viewentity && entnum != cl.viewentity && channels[ch_idx].sfx)
continue;
if (channels[ch_idx].end - paintedtime < life_left)
{
life_left = channels[ch_idx].end - paintedtime;
first_to_die = ch_idx;
}
}
if (first_to_die == -1)
return NULL;
if (channels[first_to_die].sfx)
channels[first_to_die].sfx = NULL;
return &channels[first_to_die];
}
/*
=================
SND_Spatialize
=================
*/
//
// cypress -- sound dot product square root LUTs
//
float SND_InverseSpatializationRScaleLUT[126] = {
0.0f, 0.12247448713915896f, 0.1732050807568878f, 0.21213203435596434f,
0.2449489742783179f, 0.2738612787525832f, 0.30000000000000016f, 0.32403703492039315f,
0.3464101615137756f, 0.3674234614174769f, 0.38729833462074187f, 0.4062019202317982f,
0.4242640687119287f, 0.44158804331639256f, 0.4582575694955842f, 0.4743416490252571f,
0.4898979485566358f, 0.5049752469181041f, 0.5196152422706635f, 0.5338539126015658f,
0.5477225575051664f, 0.5612486080160914f, 0.5744562646538032f, 0.5873670062235368f,
0.6000000000000003f, 0.6123724356957948f, 0.62449979983984f, 0.6363961030678931f,
0.6480740698407863f, 0.6595452979136462f, 0.6708203932499373f, 0.6819090848492931f,
0.6928203230275513f, 0.7035623639735148f, 0.7141428428542853f, 0.7245688373094723f,
0.7348469228349538f, 0.7449832212875673f, 0.7549834435270754f, 0.764852927038918f,
0.7745966692414837f, 0.7842193570679065f, 0.7937253933193775f, 0.8031189202104508f,
0.8124038404635964f, 0.8215838362577496f, 0.8306623862918079f, 0.8396427811873336f,
0.8485281374238574f, 0.8573214099741128f, 0.866025403784439f, 0.8746427842267954f,
0.8831760866327851f, 0.8916277250063508f, 0.9000000000000004f, 0.9082951062292479f,
0.9165151389911684f, 0.9246621004453469f, 0.9327379053088819f, 0.9407443861113394f,
0.9486832980505142f, 0.9565563234854499f, 0.9643650760992959f, 0.9721111047611795f,
0.9797958971132716f, 0.9874208829065754f, 0.9949874371066203f, 1.0024968827881715f,
1.009950493836208f, 1.0173494974687907f, 1.0246950765959602f, 1.0319883720275151f,
1.0392304845413267f, 1.0464224768228179f, 1.0535653752852743f, 1.0606601717798216f,
1.0677078252031316f, 1.0747092630102342f, 1.081665382639197f, 1.0885770528538625f,
1.0954451150103326f, 1.1022703842524304f, 1.109053650640942f, 1.1157956802210702f,
1.1224972160321829f, 1.1291589790636218f, 1.135781669160055f, 1.1423659658795866f,
1.1489125293076061f, 1.1554220008291347f, 1.1618950038622256f, 1.1683321445547927f,
1.1747340124470735f, 1.181101181101772f, 1.1874342087037921f, 1.1937336386313326f,
1.2000000000000004f, 1.2062338081814823f, 1.2124355652982146f, 1.2186057606953946f,
1.2247448713915896f, 1.2308533625091176f, 1.2369316876852987f, 1.242980289465606f,
1.24899959967968f, 1.2549900398011138f, 1.2609520212918497f, 1.2668859459319932f,
1.272792206135786f, 1.2786711852544426f, 1.2845232578665133f, 1.2903487900563946f,
1.2961481396815726f, 1.301921656629154f, 1.3076696830622025f, 1.3133925536563702f,
1.3190905958272925f, 1.3247641299491775f, 1.3304134695650076f, 1.3360389215887394f,
1.3416407864998743f, 1.3472193585307484f, 1.3527749258468689f, 1.358307770720613f,
1.363818169698586f, 1.3693063937629157f
};
float SND_InverseSpatializationLScaleLUT[126] = {
1.4142135623730951f, 1.408900280360537f, 1.40356688476182f, 1.3982131454109563f,
1.3928388277184118f, 1.3874436925511606f, 1.3820274961085253f, 1.3765899897936205f,
1.3711309200802089f, 1.3656500283747661f, 1.3601470508735443f, 1.3546217184144067f,
1.349073756323204f, 1.34350288425444f, 1.3379088160259651f, 1.3322912594474228f,
1.3266499161421599f, 1.3209844813622904f, 1.3152946437965904f, 1.3095800853708794f,
1.3038404810405297f, 1.2980754985747167f, 1.2922847983320085f, 1.2864680330268607f,
1.2806248474865696f, 1.2747548783981961f, 1.268857754044952f, 1.2629330940315087f,
1.2569805089976533f, 1.2509996003196802f, 1.2449899597988732f, 1.2389511693363866f,
1.232882800593795f, 1.2267844146385294f, 1.22065556157337f, 1.2144957801491119f,
1.208304597359457f, 1.2020815280171306f, 1.1958260743101397f, 1.1895377253370318f,
1.183215956619923f, 1.1768602295939816f, 1.1704699910719623f, 1.1640446726822813f,
1.1575836902790222f, 1.1510864433221335f, 1.1445523142259595f, 1.137980667674104f,
1.1313708498984758f, 1.124722187920199f, 1.1180339887498945f, 1.111305538544643f,
1.1045361017187258f, 1.097724920005007f, 1.090871211463571f, 1.0839741694339398f,
1.0770329614269005f, 1.0700467279516344f, 1.0630145812734646f, 1.0559356040971435f,
1.0488088481701512f, 1.0416333327999825f, 1.0344080432788596f, 1.0271319292087064f,
1.0198039027185566f, 1.012422836565829f, 1.0049875621120887f, 0.9974968671629998f,
0.9899494936611661f, 0.9823441352194247f, 0.974679434480896f, 0.9669539802906855f,
0.9591663046625435f, 0.951314879522022f, 0.94339811320566f, 0.9354143466934849f,
0.9273618495495699f, 0.9192388155425113f, 0.9110433579144295f, 0.902773504263389f,
0.8944271909999154f, 0.886002257333467f, 0.8774964387392117f, 0.8689073598491378f,
0.8602325267042622f, 0.8514693182963196f, 0.8426149773176353f, 0.8336666000266528f,
0.8246211251235316f, 0.8154753215150039f, 0.8062257748298544f, 0.7968688725254608f,
0.7874007874011805f, 0.7778174593052016f, 0.7681145747868602f, 0.7582875444051543f,
0.7483314773547876f, 0.7382411530116693f, 0.728010988928051f, 0.7176350047203655f,
0.7071067811865467f, 0.6964194138592051f, 0.6855654600401035f, 0.6745368781616012f,
0.663324958071079f, 0.651920240520264f, 0.6403124237432839f, 0.6284902544988258f,
0.6164414002968966f, 0.6041522986797276f, 0.5916079783099606f, 0.5787918451395102f,
0.5656854249492369f, 0.5522680508593619f, 0.5385164807134492f, 0.5244044240850745f,
0.5099019513592772f, 0.4949747468305819f, 0.4795831523312705f, 0.46368092477478373f,
0.4472135954999564f, 0.4301162633521297f, 0.41231056256176435f, 0.39370039370058874f,
0.3741657386773922f, 0.35355339059327173f
};
void SND_Spatialize(channel_t *ch)
{
vec_t dot;
vec_t dist;
vec_t lscale, rscale, scale;
vec3_t source_vec;
sfx_t *snd;
// anything coming from the view entity will always be full volume
// cypress -- added full volume for no attenuation.
if (ch->entnum == cl.viewentity || ch->dist_mult == 0)
{
ch->leftvol = ch->master_vol;
ch->rightvol = ch->master_vol;
return;
}
// calculate stereo seperation and distance attenuation
snd = ch->sfx;
VectorSubtract(ch->origin, listener_origin, source_vec);
dist = VectorNormalize(source_vec) * ch->dist_mult;
dot = DotProduct(listener_right, source_vec);
int dot_index = (dot + 1) * 63;
rscale = SND_InverseSpatializationRScaleLUT[dot_index];
lscale = SND_InverseSpatializationLScaleLUT[dot_index];
// add in distance effect
scale = (1.0 - dist) * rscale;
ch->rightvol = (int) (ch->master_vol * scale);
if (ch->rightvol < 0)
ch->rightvol = 0;
scale = (1.0 - dist) * lscale;
ch->leftvol = (int) (ch->master_vol * scale);
if (ch->leftvol < 0)
ch->leftvol = 0;
}
// =======================================================================
// Start a sound effect
// =======================================================================
void S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
{
channel_t *target_chan, *check;
sfxcache_t *sc;
int vol;
int ch_idx;
int skip;
if (!sound_started)
return;
if (!sfx)
return;
if (nosound.value)
return;
vol = fvol*255;
// pick a channel to play on
target_chan = SND_PickChannel(entnum, entchannel);
if (!target_chan)
return;
// spatialize
memset (target_chan, 0, sizeof(*target_chan));
VectorCopy(origin, target_chan->origin);
target_chan->dist_mult = attenuation / sound_nominal_clip_dist;
target_chan->master_vol = vol;
target_chan->entnum = entnum;
target_chan->entchannel = entchannel;
SND_Spatialize(target_chan);
if (!target_chan->leftvol && !target_chan->rightvol)
return; // not audible at all
// new channel
if (!(sc = S_LoadSound (sfx)))
{
target_chan->sfx = NULL;
return; // couldn't load the sound's data
}
target_chan->sfx = sfx;
target_chan->pos = 0.0;
target_chan->end = paintedtime + sc->length;
// if an identical sound has also been started this frame, offset the pos
// a bit to keep it from just making the first one louder
check = &channels[NUM_AMBIENTS];
for (ch_idx=NUM_AMBIENTS ; ch_idx < NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS ; ch_idx++, check++)
{
if (check == target_chan)
continue;
if (check->sfx == sfx && !check->pos)
{
skip = rand () % (int)(0.1*shm->speed);
if (skip >= target_chan->end)
skip = target_chan->end - 1;
target_chan->pos += skip;
target_chan->end -= skip;
break;
}
}
}
void S_StopSound(int entnum, int entchannel)
{
int i;
for (i=0 ; i<MAX_DYNAMIC_CHANNELS ; i++)
{
if (channels[i].entnum == entnum && channels[i].entchannel == entchannel)
{
channels[i].end = 0;
channels[i].sfx = NULL;
return;
}
}
}
void S_StopAllSounds(qboolean clear)
{
int i;
if (!sound_started)
return;
total_channels = MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS; // no statics
for (i=0 ; i<MAX_CHANNELS ; i++)
if (channels[i].sfx)
channels[i].sfx = NULL;
memset(channels, 0, MAX_CHANNELS * sizeof(channel_t));
if (clear)
S_ClearBuffer ();
}
void S_StopAllSoundsC_f (void)
{
S_StopAllSounds (true);
}
void S_ClearBuffer (void)
{
int clear;
if (!sound_started || !shm || !shm->buffer)
return;
if (shm->samplebits == 8)
clear = 0x80;
else
clear = 0;
{
memset(shm->buffer, clear, shm->samples * shm->samplebits/8);
}
}
/*
=================
S_StaticSound
=================
*/
void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation)
{
channel_t *ss;
sfxcache_t *sc;
if (!sfx)
return;
if (total_channels == MAX_CHANNELS)
{
Con_Printf ("total_channels == MAX_CHANNELS\n");
return;
}
ss = &channels[total_channels];
total_channels++;
if (!(sc = S_LoadSound (sfx)))
return;
if (sc->loopstart == -1)
{
Con_Printf ("Sound %s not looped\n", sfx->name);
return;
}
ss->sfx = sfx;
VectorCopy (origin, ss->origin);
ss->master_vol = vol;
ss->dist_mult = (attenuation/64) / sound_nominal_clip_dist;
ss->end = paintedtime + sc->length;
SND_Spatialize (ss);
}
//=============================================================================
/*
===================
S_UpdateAmbientSounds
===================
*/
void S_UpdateAmbientSounds (void)
{
mleaf_t *l;
float vol;
int ambient_channel;
channel_t *chan;
if (!snd_ambient)
return;
// calc ambient sound levels
if (!cl.worldmodel)
return;
l = Mod_PointInLeaf (listener_origin, cl.worldmodel);
if (!l || !ambient_level.value)
{
for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
channels[ambient_channel].sfx = NULL;
return;
}
for (ambient_channel = 0 ; ambient_channel< NUM_AMBIENTS ; ambient_channel++)
{
chan = &channels[ambient_channel];
chan->sfx = ambient_sfx[ambient_channel];
vol = ambient_level.value * l->ambient_sound_level[ambient_channel];
if (vol < 8)
vol = 0;
// don't adjust volume too fast
if (chan->master_vol < vol)
{
chan->master_vol += host_frametime * ambient_fade.value;
if (chan->master_vol > vol)
chan->master_vol = vol;
}
else if (chan->master_vol > vol)
{
chan->master_vol -= host_frametime * ambient_fade.value;
if (chan->master_vol < vol)
chan->master_vol = vol;
}
chan->leftvol = chan->rightvol = chan->master_vol;
}
}
/*
============
S_Update
Called once each time through the main loop
============
*/
void S_Update(vec3_t origin, vec3_t forward, vec3_t right, vec3_t up)
{
int i, j;
int total;
channel_t *ch;
channel_t *combine;
if (!sound_started || (snd_blocked > 0))
return;
VectorCopy(origin, listener_origin);
VectorCopy(forward, listener_forward);
VectorCopy(right, listener_right);
VectorCopy(up, listener_up);
// update general area ambient sound sources
S_UpdateAmbientSounds ();
combine = NULL;
// update spatialization for static and dynamic sounds
ch = channels+NUM_AMBIENTS;
for (i=NUM_AMBIENTS ; i<total_channels; i++, ch++)
{
if (!ch->sfx)
continue;
SND_Spatialize(ch); // respatialize channel
if (!ch->leftvol && !ch->rightvol)
continue;
// try to combine static sounds with a previous channel of the same
// sound effect so we don't mix five torches every frame
if (i >= MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS)
{
// see if it can just use the last one
if (combine && combine->sfx == ch->sfx)
{
combine->leftvol += ch->leftvol;
combine->rightvol += ch->rightvol;
ch->leftvol = ch->rightvol = 0;
continue;
}
// search for one
combine = channels+MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS;
for (j=MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS ; j<i; j++, combine++)
if (combine->sfx == ch->sfx)
break;
if (j == total_channels)
{
combine = NULL;
}
else
{
if (combine != ch)
{
combine->leftvol += ch->leftvol;
combine->rightvol += ch->rightvol;
ch->leftvol = ch->rightvol = 0;
}
continue;
}
}
}
// debugging output
if (snd_show.value)
{
total = 0;
ch = channels;
for (i=0 ; i<total_channels; i++, ch++)
if (ch->sfx && (ch->leftvol || ch->rightvol) )
{
//Con_Printf ("%3i %3i %s\n", ch->leftvol, ch->rightvol, ch->sfx->name);
total++;
}
Con_Printf ("----(%i)----\n", total);
}
// mix some sound
S_Update_();
}
void GetSoundtime(void)
{
int samplepos;
static int buffers;
static int oldsamplepos;
int fullsamples;
fullsamples = shm->samples / shm->channels;
// it is possible to miscount buffers if it has wrapped twice between
// calls to S_Update. Oh well.
samplepos = SNDDMA_GetDMAPos();
if (samplepos < oldsamplepos)
{
buffers++; // buffer wrapped
if (paintedtime > 0x40000000)
{ // time to chop things off to avoid 32 bit limits
buffers = 0;
paintedtime = fullsamples;
S_StopAllSounds (true);
}
}
oldsamplepos = samplepos;
soundtime = buffers*fullsamples + samplepos/shm->channels;
}
void S_ExtraUpdate (void)
{
if (snd_noextraupdate.value)
return; // don't pollute timings
S_Update_();
}
void S_Update_(void)
{
unsigned endtime;
int samps;
if (!sound_started || (snd_blocked > 0))
return;
// Updates DMA time
GetSoundtime();
// check to make sure that we haven't overshot
if (paintedtime < soundtime)
{
//Con_Printf ("S_Update_ : overflow\n");
paintedtime = soundtime;
}
//OutputDebugString(va("paintedtime: %i, soundtime: %i\n", paintedtime, soundtime));
// mix ahead of current position
endtime = soundtime + _snd_mixahead.value * shm->speed;
samps = shm->samples >> (shm->channels-1);
if (endtime - soundtime > samps)
endtime = soundtime + samps;
S_PaintChannels (endtime);
SNDDMA_Submit ();
}
/*
===============================================================================
console functions
===============================================================================
*/
void S_Play_f(void)
{
static int hash=345;
int i;
char name[256];
sfx_t *sfx;
i = 1;
while (i<Cmd_Argc())
{
if (!strrchr(Cmd_Argv(i), '.'))
{
strcpy(name, Cmd_Argv(i));
strlcat (name, ".wav", sizeof(name));
}
else
strcpy(name, Cmd_Argv(i));
sfx = S_PrecacheSound(name);
S_StartSound(hash++, 0, sfx, listener_origin, 1.0, 1.0);
i++;
}
}
void S_PlayVol_f(void)
{
static int hash=543;
int i;
float vol;
char name[256];
sfx_t *sfx;
if (Cmd_Argc() != 2)
{
Con_Printf ("Usage: playvol <filename>\n");
return;
}
i = 1;
while (i<Cmd_Argc())
{
if (!strrchr(Cmd_Argv(i), '.'))
{
strcpy(name, Cmd_Argv(i));
strlcat (name, ".wav", sizeof(name));
}
else
strcpy(name, Cmd_Argv(i));
sfx = S_PrecacheSound(name);
vol = atof(Cmd_Argv(i+1));
S_StartSound(hash++, 0, sfx, listener_origin, vol, 1.0);
i+=2;
}
}
void S_SoundList_f(void)
{
int i;
sfx_t *sfx;
sfxcache_t *sc;
int size, total;
total = 0;
for (sfx=known_sfx, i=0 ; i<num_sfx ; i++, sfx++)
{
if (!(sc = Cache_Check (&sfx->cache)))
continue;
size = sc->length*sc->width*(sc->stereo+1);
total += size;
if (sc->loopstart >= 0)
Con_Printf ("L");
else
Con_Printf (" ");
Con_Printf("(%2db) %6i : %s\n",sc->width*8, size, sfx->name);
}
Con_Printf ("Total resident: %i\n", total);
}
qboolean volume_changed;
void S_VolumeDown_f (void)
{
//S_LocalSound ("misc/menu3.wav");
volume.value -= 0.1;
volume.value = bound(0, volume.value, 1);
//Cvar_SetValueByRef (&volume, volume.value);
volume_changed = true;
}
void S_VolumeUp_f (void)
{
//S_LocalSound ("misc/menu3.wav");
volume.value += 0.1;
volume.value = bound(0, volume.value, 1);
//Cvar_SetValueByRef (&volume, volume.value);
volume_changed = true;
}
void S_LocalSound (char *sound)
{
sfx_t *sfx;
if (nosound.value)
return;
if (!sound_started)
return;
if (!(sfx = S_PrecacheSound (sound)))
{
Con_Printf ("S_LocalSound: can't cache %s\n", sound);
return;
}
S_StartSound (cl.viewentity, -1, sfx, vec3_origin, 1, 1);
}
void S_ClearPrecache (void)
{
}
void S_BeginPrecaching (void)
{
}
void S_EndPrecaching (void)
{
}
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