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fteqw/engine/client/snd_mix.c
Spoike f43b221896 Stuff 
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@942 fc73d0e0-1445-4013-8a0c-d673dee63da5
2005-04-16 16:21:27 +00:00

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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_mix.c -- portable code to mix sounds for snd_dma.c
#include "quakedef.h"
#ifndef __CYGWIN__
#ifndef NOSOUNDASM
#define NOSOUNDASM //since channels per sound card went to 6 (portable_samplegroup_t was changed)
#endif
#ifdef _WIN32
#include "winquake.h"
#else
#define DWORD unsigned long
#endif
#define PAINTBUFFER_SIZE 2048
portable_samplegroup_t paintbuffer[PAINTBUFFER_SIZE];
int snd_scaletable[32][256];
int *snd_p, snd_vol;
short *snd_out;
void Snd_WriteLinearBlastStereo16 (soundcardinfo_t *sc);
#if defined(NOSOUNDASM) || !id386
void Snd_WriteLinearBlastStereo16 (soundcardinfo_t *sc)
{
int i, i2;
int val;
for (i=0, i2=0; i<sc->snd_linear_count ; i+=2, i2+=6)
{
val = (snd_p[i2]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i] = (short)0x8000;
else
snd_out[i] = val;
val = (snd_p[i2+1]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i+1] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i+1] = (short)0x8000;
else
snd_out[i+1] = val;
}
}
#endif
void S_TransferStereo16 (soundcardinfo_t *sc, int endtime)
{
int lpos;
int lpaintedtime;
DWORD *pbuf;
#if defined(_WIN32) && !defined(NODIRECTX)
int reps;
DWORD dwSize=0,dwSize2=0;
DWORD *pbuf2;
HRESULT hresult;
#endif
snd_vol = volume.value*256;
snd_p = (int *) paintbuffer;
lpaintedtime = sc->paintedtime;
#if defined(_WIN32) && !defined(NODIRECTX)
if (sc->pDSBuf)
{
reps = 0;
while ((hresult = sc->pDSBuf->lpVtbl->Lock(sc->pDSBuf, 0, sc->gSndBufSize, (void**)&pbuf, &dwSize,
(void**)&pbuf2, &dwSize2, 0)) != DS_OK)
{
if (hresult != DSERR_BUFFERLOST)
{
Con_Printf ("S_TransferStereo16: DS::Lock Sound Buffer Failed\n");
S_ShutdownCard (sc);
SNDDMA_Init (sc);
return;
}
if (++reps > 10000)
{
Con_Printf ("S_TransferStereo16: DS: couldn't restore buffer\n");
S_ShutdownCard (sc);
SNDDMA_Init (sc);
return;
}
}
}
else
#endif
{
pbuf = (DWORD *)sc->sn.buffer;
}
while (lpaintedtime < endtime)
{
// handle recirculating buffer issues
lpos = lpaintedtime % ((sc->sn.samples>>1));
snd_out = (short *) pbuf + (lpos<<1);
sc->snd_linear_count = (sc->sn.samples>>1) - lpos;
if (lpaintedtime + sc->snd_linear_count > endtime)
sc->snd_linear_count = endtime - lpaintedtime;
sc->snd_linear_count <<= 1;
// write a linear blast of samples
Snd_WriteLinearBlastStereo16 (sc);
if (sc == sndcardinfo) //only do this for one sound card.
Media_RecordAudioFrame(snd_out, sc->snd_linear_count);
snd_p += sc->snd_linear_count;
lpaintedtime += (sc->snd_linear_count>>1);
}
#if defined(_WIN32) && !defined(NODIRECTX)
if (sc->pDSBuf)
sc->pDSBuf->lpVtbl->Unlock(sc->pDSBuf, pbuf, dwSize, NULL, 0);
#endif
}
void Snd_WriteLinearBlastStereo16_4Speaker (soundcardinfo_t *sc)
{
int i, i2;
int val;
for (i=0, i2=0; i<sc->snd_linear_count ; i+=4, i2+=6)
{
val = (snd_p[i2]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i] = (short)0x8000;
else
snd_out[i] = val;
val = (snd_p[i2+1]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i+1] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i+1] = (short)0x8000;
else
snd_out[i+1] = val;
val = (snd_p[i2+2]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i+2] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i+2] = (short)0x8000;
else
snd_out[i+2] = val;
val = (snd_p[i2+3]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i+3] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i+3] = (short)0x8000;
else
snd_out[i+3] = val;
// snd_out[i+0] = rand();
// snd_out[i+1] = rand();
// snd_out[i+2] = rand();
// snd_out[i+3] = rand();
}
}
void S_Transfer4Speaker16 (soundcardinfo_t *sc, int endtime)
{
int lpos;
int lpaintedtime;
DWORD *pbuf;
#if defined(_WIN32) && !defined(NODIRECTX)
int reps;
DWORD dwSize=0,dwSize2=0;
DWORD *pbuf2;
HRESULT hresult;
#endif
snd_vol = volume.value*256;
snd_p = (int *) paintbuffer;
lpaintedtime = sc->paintedtime;
#if defined(_WIN32) && !defined(NODIRECTX)
if (sc->pDSBuf)
{
reps = 0;
while ((hresult = sc->pDSBuf->lpVtbl->Lock(sc->pDSBuf, 0, sc->gSndBufSize, (void**)&pbuf, &dwSize,
(void**)&pbuf2, &dwSize2, 0)) != DS_OK)
{
if (hresult != DSERR_BUFFERLOST)
{
Con_Printf ("S_TransferStereo16: DS::Lock Sound Buffer Failed\n");
S_ShutdownCard (sc);
SNDDMA_Init (sc);
return;
}
if (++reps > 10000)
{
Con_Printf ("S_TransferStereo16: DS: couldn't restore buffer\n");
S_ShutdownCard (sc);
SNDDMA_Init (sc);
return;
}
}
}
else
#endif
{
pbuf = (DWORD *)sc->sn.buffer;
}
while (lpaintedtime < endtime)
{
// handle recirculating buffer issues
lpos = lpaintedtime % ((sc->sn.samples>>2));
snd_out = (short *) pbuf + (lpos<<2);
sc->snd_linear_count = (sc->sn.samples>>2) - lpos;
if (lpaintedtime + sc->snd_linear_count > endtime)
sc->snd_linear_count = endtime - lpaintedtime;
sc->snd_linear_count <<= 2;
// write a linear blast of samples
Snd_WriteLinearBlastStereo16_4Speaker (sc);
if (sc == sndcardinfo) //only do this for one sound card.
Media_RecordAudioFrame(snd_out, sc->snd_linear_count);
snd_p += sc->snd_linear_count;
lpaintedtime += (sc->snd_linear_count>>2);
}
#if defined(_WIN32) && !defined(NODIRECTX)
if (sc->pDSBuf)
sc->pDSBuf->lpVtbl->Unlock(sc->pDSBuf, pbuf, dwSize, NULL, 0);
#endif
}
void Snd_WriteLinearBlast6Speaker16 (soundcardinfo_t *sc)
{
int i;
int val;
for (i=0 ; i<sc->snd_linear_count ; i+=6)
{
val = (snd_p[i]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i] = (short)0x8000;
else
snd_out[i] = val;
val = (snd_p[i+1]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i+1] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i+1] = (short)0x8000;
else
snd_out[i+1] = val;
val = (snd_p[i+2]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i+2] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i+2] = (short)0x8000;
else
snd_out[i+2] = val;
val = (snd_p[i+3]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i+3] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i+3] = (short)0x8000;
else
snd_out[i+3] = val;
val = (snd_p[i+4]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i+4] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i+4] = (short)0x8000;
else
snd_out[i+4] = val;
val = (snd_p[i+5]*snd_vol)>>8;
if (val > 0x7fff)
snd_out[i+5] = 0x7fff;
else if (val < (short)0x8000)
snd_out[i+5] = (short)0x8000;
else
snd_out[i+5] = val;
#if 0
snd_out[i+0] = rand();
snd_out[i+1] = rand();
snd_out[i+2] = rand();
snd_out[i+3] = rand();
snd_out[i+4] = rand();
snd_out[i+5] = rand();
#elif 0
snd_out[i+0]=snd_out[i+1]=snd_out[i+2]=snd_out[i+3]=snd_out[i+4]=snd_out[i+5] = rand();
#endif
}
}
void S_Transfer6Speaker16 (soundcardinfo_t *sc, int endtime)
{
int lpos;
int lpaintedtime;
DWORD *pbuf;
#if defined(_WIN32) && !defined(NODIRECTX)
int reps;
DWORD dwSize=0,dwSize2=0;
DWORD *pbuf2;
HRESULT hresult;
#endif
snd_vol = volume.value*256;
snd_p = (int *) paintbuffer;
lpaintedtime = sc->paintedtime;
#if defined(_WIN32) && !defined(NODIRECTX)
if (sc->pDSBuf)
{
reps = 0;
while ((hresult = sc->pDSBuf->lpVtbl->Lock(sc->pDSBuf, 0, sc->gSndBufSize, (void**)&pbuf, &dwSize,
(void**)&pbuf2, &dwSize2, 0)) != DS_OK)
{
if (hresult != DSERR_BUFFERLOST)
{
Con_Printf ("S_TransferStereo16: DS::Lock Sound Buffer Failed\n");
S_ShutdownCard (sc);
SNDDMA_Init (sc);
return;
}
if (++reps > 10000)
{
Con_Printf ("S_TransferStereo16: DS: couldn't restore buffer\n");
S_ShutdownCard (sc);
SNDDMA_Init (sc);
return;
}
}
}
else
#endif
{
pbuf = (DWORD *)sc->sn.buffer;
}
while (lpaintedtime < endtime)
{
// handle recirculating buffer issues
lpos = (lpaintedtime % ((sc->sn.samples/6)));
snd_out = (short *) pbuf + (lpos*6);
sc->snd_linear_count = (sc->sn.samples/6) - lpos;
if (lpaintedtime + sc->snd_linear_count > endtime)
sc->snd_linear_count = endtime - lpaintedtime;
sc->snd_linear_count *= 6;
// write a linear blast of samples
Snd_WriteLinearBlast6Speaker16 (sc);
if (sc == sndcardinfo) //only do this for one sound card.
Media_RecordAudioFrame(snd_out, sc->snd_linear_count);
snd_p += sc->snd_linear_count;
lpaintedtime += (sc->snd_linear_count/6);
}
#if defined(_WIN32) && !defined(NODIRECTX)
if (sc->pDSBuf)
sc->pDSBuf->lpVtbl->Unlock(sc->pDSBuf, pbuf, dwSize, NULL, 0);
#endif
}
void S_TransferPaintBuffer(soundcardinfo_t *sc, int endtime)
{
int out_idx;
int count;
int out_mask;
int *p;
int step;
int val;
int snd_vol;
DWORD *pbuf;
#if defined(_WIN32) && !defined(NODIRECTX)
int reps;
DWORD dwSize=0,dwSize2=0;
DWORD *pbuf2;
HRESULT hresult;
#endif
if (sc->sn.samplebits == 16 && sc->sn.numchannels == 2)
{
S_TransferStereo16 (sc, endtime);
return;
}
if (sc->sn.samplebits == 16 && sc->sn.numchannels == 6)
{
S_Transfer6Speaker16 (sc, endtime);
return;
}
if (sc->sn.samplebits == 16 && sc->sn.numchannels == 4)
{
S_Transfer4Speaker16 (sc, endtime);
return;
}
p = (int *) paintbuffer;
count = (endtime - sc->paintedtime) * sc->sn.numchannels;
out_mask = sc->sn.samples - 1;
out_idx = sc->paintedtime * sc->sn.numchannels & out_mask;
if (sc->sn.numchannels>2)
step = 1;
else
step = 3 - sc->sn.numchannels;
snd_vol = volume.value*256;
#if defined(_WIN32) && !defined(NODIRECTX)
if (sc->pDSBuf)
{
reps = 0;
while ((hresult = sc->pDSBuf->lpVtbl->Lock(sc->pDSBuf, 0, sc->gSndBufSize, (void**)&pbuf, &dwSize,
(void**)&pbuf2,&dwSize2, 0)) != DS_OK)
{
if (hresult != DSERR_BUFFERLOST)
{
Con_Printf ("S_TransferPaintBuffer: DS::Lock Sound Buffer Failed\n");
S_ShutdownCard (sc);
SNDDMA_Init (sc);
return;
}
if (++reps > 10000)
{
Con_Printf ("S_TransferPaintBuffer: DS: couldn't restore buffer\n");
S_ShutdownCard (sc);
SNDDMA_Init (sc);
return;
}
}
}
else
#endif
{
pbuf = (DWORD *)sc->sn.buffer;
}
if (sc->sn.samplebits == 16)
{
short *out = (short *) pbuf;
while (count--)
{
val = (*p * snd_vol) >> 8;
p+= step;
if (val > 0x7fff)
val = 0x7fff;
else if (val < (short)0x8000)
val = (short)0x8000;
out[out_idx] = val;
out_idx = (out_idx + 1) & out_mask;
}
}
else if (sc->sn.samplebits == 8)
{
unsigned char *out = (unsigned char *) pbuf;
while (count--)
{
val = (*p * snd_vol) >> 8;
p+= step;
if (val > 0x7fff)
val = 0x7fff;
else if (val < (short)0x8000)
val = (short)0x8000;
out[out_idx] = (val>>8) + 128;
out_idx = (out_idx + 1) & out_mask;
}
}
#if defined(_WIN32) && !defined(NODIRECTX)
if (sc->pDSBuf) {
DWORD dwNewpos, dwWrite;
int il = sc->paintedtime;
int ir = endtime - sc->paintedtime;
ir += il;
sc->pDSBuf->lpVtbl->Unlock(sc->pDSBuf, pbuf, dwSize, NULL, 0);
sc->pDSBuf->lpVtbl->GetCurrentPosition(sc->pDSBuf, &dwNewpos, &dwWrite);
// if ((dwNewpos >= il) && (dwNewpos <= ir))
// Con_Printf("%d-%d p %d c\n", il, ir, dwNewpos);
}
#endif
}
/*
===============================================================================
CHANNEL MIXING
===============================================================================
*/
void SND_PaintChannelFrom8 (channel_t *ch, sfxcache_t *sc, int endtime);
void SND_PaintChannelFrom8Duel (channel_t *ch, sfxcache_t *sc, int endtime);
void SND_PaintChannelFrom16 (channel_t *ch, sfxcache_t *sc, int endtime);
void SND_PaintChannelFrom8_4Speaker (channel_t *ch, sfxcache_t *sc, int count);
void SND_PaintChannelFrom16_4Speaker (channel_t *ch, sfxcache_t *sc, int count);
void SND_PaintChannelFrom8_6Speaker (channel_t *ch, sfxcache_t *sc, int count);
void SND_PaintChannelFrom16_6Speaker (channel_t *ch, sfxcache_t *sc, int count);
void SND_PaintChannelFrom8Stereo (channel_t *ch, sfxcache_t *sc, int count);
void SND_PaintChannelFrom16Stereo (channel_t *ch, sfxcache_t *sc, int count);
void S_PaintChannels(soundcardinfo_t *sc, int endtime)
{
int i, j;
int end;
channel_t *ch;
sfxcache_t *scache;
sfx_t *s;
int ltime, count;
// sc->rawstart += sc->paintedtime - sc->oldpaintedtime;
// sc->oldpaintedtime = sc->paintedtime;
while (sc->paintedtime < endtime)
{
// if paintbuffer is smaller than DMA buffer
end = endtime;
if (endtime - sc->paintedtime > PAINTBUFFER_SIZE)
end = sc->paintedtime + PAINTBUFFER_SIZE;
// clear the paint buffer
Q_memset(paintbuffer, 0, (end - sc->paintedtime) * sizeof(portable_samplegroup_t));
// paint in the channels.
ch = sc->channel;
for (i=0; i<sc->total_chans ; i++, ch++)
{
if (!ch->sfx)
continue;
if (!ch->vol[0] && !ch->vol[1] && !ch->vol[2] && !ch->vol[3] && !ch->vol[4] && !ch->vol[5])
continue;
scache = S_LoadSound (ch->sfx);
if (!scache)
continue;
if (ch->pos > scache->length) //cache was flushed and gamedir changed.
{
ch->pos = scache->length;
ch->end = scache->length;
}
ltime = sc->paintedtime;
if (ch->sfx->decoder)
{
int len_diff;
soundcardinfo_t *sndc;
#define qmax(x, y) (x>y)?(x):(y)
len_diff = scache->length;
ch->sfx->decoder->decodemore(ch->sfx,
ch->pos + endtime-ltime+1000);
//ch->pos + qmax(end-ltime+1000, 1000)); //try to exceed by a little.
scache = S_LoadSound (ch->sfx);
if (!scache)
continue;
len_diff = scache->length - len_diff;
for (sndc = sndcardinfo; sndc; sndc=sndc->next)
{
for (j = 0; j < sndc->total_chans; j++)
if (sndc->channel[j].sfx == ch->sfx) //extend all of these.
ch->end += len_diff;
}
}
while (ltime < end)
{ // paint up to end
if (ch->end < end)
count = ch->end - ltime;
else
count = end - ltime;
if (count > 0)
{
if (ch->pos < 0) //delay the sound a little
{
if (count > -ch->pos)
count = -ch->pos;
ltime += count;
ch->pos += count;
continue;
}
/*dmw having fun
int uw;
int oldpos = ch->pos;
int vol = ch->vol[0];
int rvol = ch->vol[1];
int end = ch->end;
ch->vol[1]=0;
ch->vol[0]/=2;
for (uw = 0; uw < 5; uw++)
{
*/
if (scache->width == 1)
{
if (scache->stereo)
SND_PaintChannelFrom8Stereo(ch, scache, count);
else if (sc->sn.numchannels == 6)
SND_PaintChannelFrom8_6Speaker(ch, scache, count);
else if (sc->sn.numchannels == 4)
SND_PaintChannelFrom8_4Speaker(ch, scache, count);
else
SND_PaintChannelFrom8(ch, scache, count);
}
else
{
if (scache->stereo)
SND_PaintChannelFrom16Stereo(ch, scache, count);
else if (sc->sn.numchannels == 6)
SND_PaintChannelFrom16_6Speaker(ch, scache, count);
else if (sc->sn.numchannels == 4)
SND_PaintChannelFrom16_4Speaker(ch, scache, count);
else
SND_PaintChannelFrom16(ch, scache, count);
}
/* lots of fun
// ch->vol[0]*=-1;
ch->vol[1]=0;
ch->vol[0]/=1.3;
ch->pos=oldpos-cursndcard->sn.speed*uw*0.06;
if (ch->pos >= sc->length || ch->pos < 0)
break;
}
ch->vol[0] = vol;
ch->vol[1] = rvol;
ch->pos = oldpos+count;
*/
ltime += count;
}
// if at end of loop, restart
if (ltime >= ch->end)
{
if (scache->loopstart >= 0)
{
ch->pos = scache->loopstart;
ch->end = ltime + scache->length - ch->pos;
if (!scache->length)
{
scache->loopstart=-1;
break;
}
}
else if (ch->looping && scache->length)
{
ch->pos = 0;
ch->end = ltime + scache->length - ch->pos;
}
else
{ // channel just stopped
s = ch->sfx;
ch->sfx = NULL;
if (s->decoder)
{
if (!S_IsPlayingSomewhere(s))
s->decoder->abort(s);
}
break;
}
}
}
}
// transfer out according to DMA format
S_TransferPaintBuffer(sc, end);
sc->paintedtime = end;
}
}
void SND_InitScaletable (void)
{
int i, j;
for (i=0 ; i<32 ; i++)
for (j=0 ; j<256 ; j++)
snd_scaletable[i][j] = ((signed char)j) * i * 8;
}
#if defined(NOSOUNDASM) || !id386
void SND_PaintChannelFrom8 (channel_t *ch, sfxcache_t *sc, int count)
{
int data;
int *lscale, *rscale;
unsigned char *sfx;
int i;
if (ch->vol[0] > 255)
ch->vol[0] = 255;
if (ch->vol[1] > 255)
ch->vol[1] = 255;
lscale = snd_scaletable[ch->vol[0] >> 3];
rscale = snd_scaletable[ch->vol[1] >> 3];
sfx = (signed char *)sc->data + ch->pos;
for (i=0 ; i<count ; i++)
{
data = sfx[i];
paintbuffer[i].s[0] += lscale[data];
paintbuffer[i].s[1] += rscale[data];
}
ch->pos += count;
}
void SND_PaintChannelFrom8Duel (channel_t *ch, sfxcache_t *sc, int count)
{
int *lscale, *rscale;
unsigned char *sfx1, *sfx2;
int i;
if (ch->vol[0] > 255)
ch->vol[0] = 255;
if (ch->vol[1] > 255)
ch->vol[1] = 255;
lscale = snd_scaletable[ch->vol[0] >> 3];
rscale = snd_scaletable[ch->vol[1] >> 3];
i = ch->pos - ch->delay[0];
if (i < 0) i = 0;
sfx1 = (signed char *)sc->data + i;
i = ch->pos - ch->delay[1];
if (i < 0) i = 0;
sfx2 = (signed char *)sc->data + i;
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += lscale[sfx1[i]];
paintbuffer[i].s[1] += rscale[sfx2[i]];
}
ch->pos += count;
}
#endif // !id386
void SND_PaintChannelFrom8Stereo (channel_t *ch, sfxcache_t *sc, int count)
{
// int data;
int *lscale, *rscale;
unsigned char *sfx;
int i;
if (ch->vol[0] > 255)
ch->vol[0] = 255;
if (ch->vol[1] > 255)
ch->vol[1] = 255;
lscale = snd_scaletable[ch->vol[0] >> 3];
rscale = snd_scaletable[ch->vol[1] >> 3];
sfx = (signed char *)sc->data + ch->pos;
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += lscale[sfx[(i<<1)]];
paintbuffer[i].s[1] += rscale[sfx[(i<<1)+1]];
}
ch->pos += count;
}
void SND_PaintChannelFrom8_4Speaker (channel_t *ch, sfxcache_t *sc, int count)
{
int *scale0, *scale1, *scale2, *scale3;
unsigned char *sfx;
int i;
if (ch->vol[0] > 255)
ch->vol[0] = 255;
if (ch->vol[1] > 255)
ch->vol[1] = 255;
if (ch->vol[2] > 255)
ch->vol[2] = 255;
if (ch->vol[3] > 255)
ch->vol[3] = 255;
scale0 = snd_scaletable[ch->vol[0] >> 3];
scale1 = snd_scaletable[ch->vol[1] >> 3];
scale2 = snd_scaletable[ch->vol[2] >> 3];
scale3 = snd_scaletable[ch->vol[3] >> 3];
sfx = (signed char *)sc->data + ch->pos;
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += scale0[sfx[i]];
paintbuffer[i].s[1] += scale1[sfx[i]];
paintbuffer[i].s[2] += scale2[sfx[i]];
paintbuffer[i].s[3] += scale3[sfx[i]];
}
ch->pos += count;
}
void SND_PaintChannelFrom8_6Speaker (channel_t *ch, sfxcache_t *sc, int count)
{
int *scale0, *scale1, *scale2, *scale3, *scale4, *scale5;
unsigned char *sfx;
int i;
if (ch->vol[0] > 255)
ch->vol[0] = 255;
if (ch->vol[1] > 255)
ch->vol[1] = 255;
if (ch->vol[2] > 255)
ch->vol[2] = 255;
if (ch->vol[3] > 255)
ch->vol[3] = 255;
if (ch->vol[4] > 255)
ch->vol[4] = 255;
if (ch->vol[5] > 255)
ch->vol[5] = 255;
scale0 = snd_scaletable[ch->vol[0] >> 3];
scale1 = snd_scaletable[ch->vol[1] >> 3];
scale2 = snd_scaletable[ch->vol[2] >> 3];
scale3 = snd_scaletable[ch->vol[3] >> 3];
scale4 = snd_scaletable[ch->vol[4] >> 3];
scale5 = snd_scaletable[ch->vol[5] >> 3];
sfx = (signed char *)sc->data + ch->pos;
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += scale0[sfx[i]];
paintbuffer[i].s[1] += scale1[sfx[i]];
paintbuffer[i].s[2] += scale2[sfx[i]];
paintbuffer[i].s[3] += scale3[sfx[i]];
paintbuffer[i].s[4] += scale4[sfx[i]];
paintbuffer[i].s[5] += scale5[sfx[i]];
}
ch->pos += count;
}
void SND_PaintChannelFrom16 (channel_t *ch, sfxcache_t *sc, int count)
{
int data;
int left, right;
int leftvol, rightvol;
signed short *sfx;
int i;
leftvol = ch->vol[0];
rightvol = ch->vol[1];
sfx = (signed short *)sc->data + ch->pos;
for (i=0 ; i<count ; i++)
{
data = sfx[i];
left = (data * leftvol) >> 8;
right = (data * rightvol) >> 8;
paintbuffer[i].s[0] += left;
paintbuffer[i].s[1] += right;
}
ch->pos += count;
}
void SND_PaintChannelFrom16Stereo (channel_t *ch, sfxcache_t *sc, int count)
{
int leftvol, rightvol;
signed short *sfx;
int i;
leftvol = ch->vol[0];
rightvol = ch->vol[1];
sfx = (signed short *)sc->data + ch->pos*2;
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += (*sfx++ * leftvol) >> 8;
paintbuffer[i].s[1] += (*sfx++ * rightvol) >> 8;
}
ch->pos += count;
}
void SND_PaintChannelFrom16_6Speaker (channel_t *ch, sfxcache_t *sc, int count)
{
int vol[6];
signed short *sfx;
int i;
vol[0] = ch->vol[0];
vol[1] = ch->vol[1];
vol[2] = ch->vol[2];
vol[3] = ch->vol[3];
vol[4] = ch->vol[4];
vol[5] = ch->vol[5];
sfx = (signed short *)sc->data + ch->pos;
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += (sfx[i] * vol[0]) >> 8;
paintbuffer[i].s[1] += (sfx[i] * vol[1]) >> 8;
paintbuffer[i].s[2] += (sfx[i] * vol[2]) >> 8;
paintbuffer[i].s[3] += (sfx[i] * vol[3]) >> 8;
paintbuffer[i].s[4] += (sfx[i] * vol[4]) >> 8;
paintbuffer[i].s[5] += (sfx[i] * vol[5]) >> 8;
}
ch->pos += count;
}
void SND_PaintChannelFrom16_4Speaker (channel_t *ch, sfxcache_t *sc, int count)
{
int vol[4];
signed short *sfx;
int i;
vol[0] = ch->vol[0];
vol[1] = ch->vol[1];
vol[2] = ch->vol[2];
vol[3] = ch->vol[3];
sfx = (signed short *)sc->data + ch->pos;
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += (sfx[i] * vol[0]) >> 8;
paintbuffer[i].s[1] += (sfx[i] * vol[1]) >> 8;
paintbuffer[i].s[2] += (sfx[i] * vol[2]) >> 8;
paintbuffer[i].s[3] += (sfx[i] * vol[3]) >> 8;
}
ch->pos += count;
}
#endif
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