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engine/engine/client/snd_mix.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_mix.c -- portable code to mix sounds for snd_dma.c
#include "quakedef.h"
#ifdef HAVE_MIXER
//#define MIXER_PAINT_F32
#ifdef MIXER_PAINT_F32
#define MIX_16_8(val) ((val)/(float)(1<<(15+8)))
#define MIX_8_8(val) ((val)/(float)(1<<(7+8)))
typedef struct {
float s[MAXSOUNDCHANNELS];
} portable_samplegroup_t;
#else
#define MIX_16_8(val) ((val)>>8) //value is a 16bit*8bit value (audio*vol) value. discard the lower 8 bits to treat the volume as a fraction
#define MIX_8_8(val) (val) //value is a 8bit*8bit value (audio*vol) value. result is 16bit.
typedef struct {
int s[MAXSOUNDCHANNELS]; //signed, 1=0x7fff ish. will be clamped to allow oversaturation
} portable_samplegroup_t;
#endif
#define PAINTBUFFER_SIZE 2048
static portable_samplegroup_t paintbuffer[PAINTBUFFER_SIZE]; //FIXME: we really ought to be using SSE and floats or something.
void S_TransferPaintBuffer(soundcardinfo_t *sc, int endtime)
{
unsigned int out_idx;
unsigned int count;
unsigned int outlimit;
#ifdef MIXER_PAINT_F32
float *p = (float *fte_restrict)paintbuffer;
#else
int *p = (int *fte_restrict) paintbuffer;
#endif
int val;
// int snd_vol;
void *pbuf;
int i, numc;
count = (endtime - sc->paintedtime) * sc->sn.numchannels;
outlimit = sc->sn.samples;
out_idx = (sc->paintedtime * sc->sn.numchannels) % outlimit;
// snd_vol = (volume.value*voicevolumemod)*256;
numc = sc->sn.numchannels;
pbuf = sc->Lock(sc, &out_idx);
if (!pbuf)
return;
switch(sc->sn.sampleformat)
{
case QSF_INVALID: //erk...
case QSF_EXTERNALMIXER: //shouldn't reach this.
break;
case QSF_U8:
{
unsigned char *out = (unsigned char *) pbuf;
while (count)
{
for (i = 0; i < numc; i++)
{
#ifdef MIXER_PAINT_F32
val = (*p++ + 1)*128;
if (val > 255)
val = 255;
else if (val < 0)
val = 0;
out[out_idx] = val;
#else
val = *p++;
if (val > 0x7fff)
val = 0x7fff;
else if (val < (short)0x8000)
val = (short)0x8000;
out[out_idx] = (val>>8) + 128;
#endif
out_idx = (out_idx + 1) % outlimit;
}
p += MAXSOUNDCHANNELS - numc;
count -= numc;
}
}
break;
case QSF_S8:
{
char *out = (char *) pbuf;
while (count)
{
for (i = 0; i < numc; i++)
{
#ifdef MIXER_PAINT_F32
val = *p++*128;
if (val > 127)
val = 127;
else if (val < -128)
val = -128;
out[out_idx] = val;
#else
val = *p++;
if (val > 0x7fff)
val = 0x7fff;
else if (val < (short)0x8000)
val = (short)0x8000;
out[out_idx] = (val>>8);
#endif
out_idx = (out_idx + 1) % outlimit;
}
p += MAXSOUNDCHANNELS - numc;
count -= numc;
}
}
break;
case QSF_S16:
{
short *out = (short *) pbuf;
while (count)
{
for (i = 0; i < numc; i++)
{
#ifdef MIXER_PAINT_F32
val = *p++*0x7fff;
#else
val = *p++;
#endif
if (val > 0x7fff)
val = 0x7fff;
else if (val < (short)0x8000)
val = (short)0x8000;
out[out_idx] = val;
out_idx = (out_idx + 1) % outlimit;
}
p += MAXSOUNDCHANNELS - numc;
count -= numc;
}
}
break;
case QSF_F32:
{
float *out = (float *) pbuf;
while (count)
{
for (i = 0; i < numc; i++)
{
#ifdef MIXER_PAINT_F32 //FIXME: replace with a memcpy.
out[out_idx] = *p++;
#else
out[out_idx] = *p++ * (1.0 / 32768);
#endif
out_idx = (out_idx + 1) % outlimit;
}
p += MAXSOUNDCHANNELS - numc;
count -= numc;
}
}
break;
}
sc->Unlock(sc, pbuf);
}
/*
===============================================================================
CHANNEL MIXING
===============================================================================
*/
static void SND_PaintChannel8_O2I1 (channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate);
static void SND_PaintChannel16_O2I1 (channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate);
static void SND_PaintChannel8_O4I1 (channel_t *ch, sfxcache_t *sc, int count, int rate);
static void SND_PaintChannel16_O4I1 (channel_t *ch, sfxcache_t *sc, int count, int rate);
static void SND_PaintChannel8_O6I1 (channel_t *ch, sfxcache_t *sc, int count, int rate);
static void SND_PaintChannel16_O6I1 (channel_t *ch, sfxcache_t *sc, int count, int rate);
static void SND_PaintChannel8_O8I1 (channel_t *ch, sfxcache_t *sc, int count, int rate);
static void SND_PaintChannel16_O8I1 (channel_t *ch, sfxcache_t *sc, int count, int rate);
static void SND_PaintChannel8_O2I2 (channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate);
static void SND_PaintChannel16_O2I2 (channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate);
#ifdef MIXER_F32
static void SND_PaintChannel32F_O2I1(channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate);
static void SND_PaintChannel32F_O4I1(channel_t *ch, sfxcache_t *sc, int count, int rate);
static void SND_PaintChannel32F_O6I1(channel_t *ch, sfxcache_t *sc, int count, int rate);
static void SND_PaintChannel32F_O8I1(channel_t *ch, sfxcache_t *sc, int count, int rate);
static void SND_PaintChannel32F_O2I2(channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate);
#endif
//NOTE: MAY NOT CALL SYS_ERROR
void S_PaintChannels(soundcardinfo_t *sc, int endtime)
{
int i;
int end;
channel_t *ch;
sfxcache_t scachebuf;
sfxcache_t *scache;
sfx_t *s;
int ltime, count;
int avail;
unsigned int maxlen = ruleset_allow_overlongsounds.ival?0xffffffffu>>PITCHSHIFT:snd_speed*20;
int rate;
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++)
{
s = ch->sfx;
if (!s || s->loadstate == SLS_LOADING)
continue;
if (!ch->vol[0] && !ch->vol[1] && !ch->vol[2] && !ch->vol[3] && !ch->vol[4] && !ch->vol[5])
{
//does it still make a sound if it cannot be heard?...
//technically no...
//this code is hacky.
if (s->decoder.querydata)
s->decoder.querydata(s, scache=&scachebuf, NULL, 0);
else if (s->decoder.decodedata)
scache = s->decoder.decodedata(s, &scachebuf, ch->pos>>PITCHSHIFT, 0); /*1 for luck - balances audio termination below*/
else
scache = s->decoder.buf;
ch->pos += (end-sc->paintedtime)*ch->rate;
if (!scache || (ch->pos>>PITCHSHIFT) > scache->soundoffset+scache->length)
{
ch->pos = 0;
if (s->loopstart != -1)
ch->pos = s->loopstart<<PITCHSHIFT;
else if (!(ch->flags & CF_FORCELOOP))
{
ch->sfx = NULL;
if (s->decoder.ended)
{
if (!S_IsPlayingSomewhere(s))
s->decoder.ended(s);
}
}
}
continue;
}
ltime = sc->paintedtime;
while (ltime < end)
{
ssamplepos_t spos = ch->pos>>PITCHSHIFT;
if (s->decoder.decodedata)
scache = s->decoder.decodedata(s, &scachebuf, spos, 1 + (((end - ltime) * ch->rate)>>PITCHSHIFT)); /*1 for luck - balances audio termination below*/
else if (s->decoder.buf)
{
scache = s->decoder.buf;
if (spos >= scache->length)
scache = NULL; //EOF
}
else
scache = NULL;
if (!scache)
{ //hit eof, loop it or stop it
if (s->loopstart != -1) /*some wavs contain a loop offset directly in the sound file, such samples loop even if a non-looping builtin was used*/
{
ch->pos &= ~((~0u)<<PITCHSHIFT); /*clear out all but the subsample offset*/
ch->pos += s->loopstart<<PITCHSHIFT; //ignore the offset if its off the end of the file
}
else if (ch->flags & CF_FORCELOOP) /*(static)channels which are explicitly looping always loop from the start*/
{
/*restart it*/
ch->pos = 0;
}
else
{ // channel just stopped
ch->sfx = NULL;
if (s->decoder.ended)
{
if (!S_IsPlayingSomewhere(s))
s->decoder.ended(s);
}
break;
}
//retry at that new offset (continue here could give an infinite loop)
spos = ch->pos>>PITCHSHIFT;
if (s->decoder.decodedata)
scache = s->decoder.decodedata(s, &scachebuf, spos, 1 + (((end - ltime) * ch->rate)>>PITCHSHIFT)); /*1 for luck - balances audio termination below*/
else if (s->decoder.buf)
{
scache = s->decoder.buf;
if (spos >= scache->length)
scache = NULL; //EOF
}
else
scache = NULL;
if (!scache)
break;
}
if (sc->sn.speed != scache->speed)
rate = (ch->rate * scache->speed) / sc->sn.speed; //sound was loaded at the wrong speed. just play it back at a different speed and hope that all is well. this is nearest sampling, so expect it to be a little poo.
else
rate = ch->rate;
if (spos < scache->soundoffset || spos > scache->soundoffset+scache->length)
avail = 0; //urm, we would be trying to read outside of the buffer. let mixing slip when there's no data available yet.
else
{
// find how many samples till the sample ends (clamp max length)
avail = scache->length;
if (avail > maxlen)
avail = snd_speed*10;
avail = (((int)(scache->soundoffset + avail)<<PITCHSHIFT) - ch->pos + (rate-1)) / rate;
}
// mix the smaller of how much is available or the time left
count = min(avail, end - ltime);
if (count > 0)
{
if (ch->pos < 0) //sounds with a pos of 0 are delay-start sounds
{
//don't progress past 0, so it actually starts properly at the right time with no clicks or anything
if (count > (-ch->pos+255)>>PITCHSHIFT)
count = ((-ch->pos+255)>>PITCHSHIFT);
ltime += count;
ch->pos += count*rate;
continue;
}
switch(scache->format)
{
case QAF_S8:
if (scache->numchannels==2)
SND_PaintChannel8_O2I2(ch, scache, ltime-sc->paintedtime, count, rate);
else if (sc->sn.numchannels <= 2)
SND_PaintChannel8_O2I1(ch, scache, ltime-sc->paintedtime, count, rate);
else if (sc->sn.numchannels <= 4)
SND_PaintChannel8_O4I1(ch, scache, count, rate);
else if (sc->sn.numchannels <= 6)
SND_PaintChannel8_O6I1(ch, scache, count, rate);
else
SND_PaintChannel8_O8I1(ch, scache, count, rate);
break;
case QAF_S16:
if (scache->numchannels==2)
SND_PaintChannel16_O2I2(ch, scache, ltime-sc->paintedtime, count, rate);
else if (sc->sn.numchannels <= 2)
SND_PaintChannel16_O2I1(ch, scache, ltime-sc->paintedtime, count, rate);
else if (sc->sn.numchannels <= 4)
SND_PaintChannel16_O4I1(ch, scache, count, rate);
else if (sc->sn.numchannels <= 6)
SND_PaintChannel16_O6I1(ch, scache, count, rate);
else
SND_PaintChannel16_O8I1(ch, scache, count, rate);
break;
#ifdef MIXER_F32
case QAF_F32:
if (scache->numchannels==2)
SND_PaintChannel32F_O2I2(ch, scache, ltime-sc->paintedtime, count, rate);
else if (sc->sn.numchannels <= 2)
SND_PaintChannel32F_O2I1(ch, scache, ltime-sc->paintedtime, count, rate);
else if (sc->sn.numchannels <= 4)
SND_PaintChannel32F_O4I1(ch, scache, count, rate);
else if (sc->sn.numchannels <= 6)
SND_PaintChannel32F_O6I1(ch, scache, count, rate);
else
SND_PaintChannel32F_O8I1(ch, scache, count, rate);
break;
#endif
#ifdef FTE_TARGET_WEB
case QAF_BLOB:
break;
#endif
}
ltime += count;
ch->pos += rate * count;
}
else
break;
}
}
// transfer out according to DMA format
S_TransferPaintBuffer(sc, end);
sc->paintedtime = end;
}
}
static void SND_PaintChannel8_O2I1 (channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate)
{
int data;
signed char *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
if (rate != (1<<PITCHSHIFT))
{
sfx = (signed char *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += rate;
paintbuffer[starttime+i].s[0] += MIX_8_8(ch->vol[0] * data);
paintbuffer[starttime+i].s[1] += MIX_8_8(ch->vol[1] * data);
}
}
else
{
sfx = (signed char *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
data = sfx[i];
paintbuffer[starttime+i].s[0] += MIX_8_8(ch->vol[0] * data);
paintbuffer[starttime+i].s[1] += MIX_8_8(ch->vol[1] * data);
}
}
}
static void SND_PaintChannel8_O2I2 (channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate)
{
// int data;
signed char *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
if (rate != (1<<PITCHSHIFT))
{
sfx = (signed char *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
paintbuffer[starttime+i].s[0] += MIX_8_8(ch->vol[0] * sfx[(pos>>(PITCHSHIFT-1))&~1]);
paintbuffer[starttime+i].s[1] += MIX_8_8(ch->vol[1] * sfx[(pos>>(PITCHSHIFT-1))|1]);
pos += rate;
}
}
else
{
sfx = (signed char *fte_restrict)sc->data + (pos>>PITCHSHIFT)*2;
for (i=0 ; i<count ; i++)
{
paintbuffer[starttime+i].s[0] += MIX_8_8(ch->vol[0] * sfx[(i<<1)]);
paintbuffer[starttime+i].s[1] += MIX_8_8(ch->vol[1] * sfx[(i<<1)+1]);
}
}
}
static void SND_PaintChannel8_O4I1 (channel_t *ch, sfxcache_t *sc, int count, int rate)
{
signed char *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
if (rate != (1<<PITCHSHIFT))
{
signed char data;
sfx = (signed char *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += rate;
paintbuffer[i].s[0] += MIX_8_8(ch->vol[0] * data);
paintbuffer[i].s[1] += MIX_8_8(ch->vol[1] * data);
paintbuffer[i].s[2] += MIX_8_8(ch->vol[2] * data);
paintbuffer[i].s[3] += MIX_8_8(ch->vol[3] * data);
}
}
else
{
sfx = (signed char *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += MIX_8_8(ch->vol[0] * sfx[i]);
paintbuffer[i].s[1] += MIX_8_8(ch->vol[1] * sfx[i]);
paintbuffer[i].s[2] += MIX_8_8(ch->vol[2] * sfx[i]);
paintbuffer[i].s[3] += MIX_8_8(ch->vol[3] * sfx[i]);
}
}
}
static void SND_PaintChannel8_O6I1 (channel_t *ch, sfxcache_t *sc, int count, int rate)
{
signed char *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
if (rate != (1<<PITCHSHIFT))
{
signed char data;
sfx = (signed char *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += rate;
paintbuffer[i].s[0] += MIX_8_8(ch->vol[0] * data);
paintbuffer[i].s[1] += MIX_8_8(ch->vol[1] * data);
paintbuffer[i].s[2] += MIX_8_8(ch->vol[2] * data);
paintbuffer[i].s[3] += MIX_8_8(ch->vol[3] * data);
paintbuffer[i].s[4] += MIX_8_8(ch->vol[4] * data);
paintbuffer[i].s[5] += MIX_8_8(ch->vol[5] * data);
}
}
else
{
sfx = (signed char *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += MIX_8_8(ch->vol[0] * sfx[i]);
paintbuffer[i].s[1] += MIX_8_8(ch->vol[1] * sfx[i]);
paintbuffer[i].s[2] += MIX_8_8(ch->vol[2] * sfx[i]);
paintbuffer[i].s[3] += MIX_8_8(ch->vol[3] * sfx[i]);
paintbuffer[i].s[4] += MIX_8_8(ch->vol[4] * sfx[i]);
paintbuffer[i].s[5] += MIX_8_8(ch->vol[5] * sfx[i]);
}
}
}
static void SND_PaintChannel8_O8I1 (channel_t *ch, sfxcache_t *sc, int count, int rate)
{
signed char *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
if (rate != (1<<PITCHSHIFT))
{
signed char data;
sfx = (signed char *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += rate;
paintbuffer[i].s[0] += MIX_8_8(ch->vol[0] * data);
paintbuffer[i].s[1] += MIX_8_8(ch->vol[1] * data);
paintbuffer[i].s[2] += MIX_8_8(ch->vol[2] * data);
paintbuffer[i].s[3] += MIX_8_8(ch->vol[3] * data);
paintbuffer[i].s[4] += MIX_8_8(ch->vol[4] * data);
paintbuffer[i].s[5] += MIX_8_8(ch->vol[5] * data);
paintbuffer[i].s[6] += MIX_8_8(ch->vol[6] * data);
paintbuffer[i].s[7] += MIX_8_8(ch->vol[7] * data);
}
}
else
{
sfx = (signed char *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += MIX_8_8(ch->vol[0] * sfx[i]);
paintbuffer[i].s[1] += MIX_8_8(ch->vol[1] * sfx[i]);
paintbuffer[i].s[2] += MIX_8_8(ch->vol[2] * sfx[i]);
paintbuffer[i].s[3] += MIX_8_8(ch->vol[3] * sfx[i]);
paintbuffer[i].s[4] += MIX_8_8(ch->vol[4] * sfx[i]);
paintbuffer[i].s[5] += MIX_8_8(ch->vol[5] * sfx[i]);
paintbuffer[i].s[6] += MIX_8_8(ch->vol[6] * sfx[i]);
paintbuffer[i].s[7] += MIX_8_8(ch->vol[7] * sfx[i]);
}
}
}
static void SND_PaintChannel16_O2I1 (channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate)
{
int data;
int leftvol, rightvol;
signed short *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
leftvol = ch->vol[0];
rightvol = ch->vol[1];
if (rate != (1<<PITCHSHIFT))
{
signed int data;
sfx = (signed short *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
int frac = pos&((1<<PITCHSHIFT)-1);
data = sfx[pos>>PITCHSHIFT] * ((1<<PITCHSHIFT)-frac) + sfx[(pos>>PITCHSHIFT)+1] * frac;
pos += rate;
paintbuffer[starttime+i].s[0] += MIX_16_8((leftvol * data)>>PITCHSHIFT);
paintbuffer[starttime+i].s[1] += MIX_16_8((rightvol * data)>>PITCHSHIFT);
}
}
else
{
sfx = (signed short *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
data = sfx[i];
paintbuffer[starttime+i].s[0] += MIX_16_8(data * leftvol);
paintbuffer[starttime+i].s[1] += MIX_16_8(data * rightvol);
}
}
}
static void SND_PaintChannel16_O2I2 (channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate)
{
int leftvol, rightvol;
signed short *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
leftvol = ch->vol[0];
rightvol = ch->vol[1];
if (rate != (1<<PITCHSHIFT))
{
signed short l, r;
sfx = (signed short *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
l = sfx[(pos>>(PITCHSHIFT-1))&~1];
r = sfx[(pos>>(PITCHSHIFT-1))|1];
pos += rate;
paintbuffer[starttime+i].s[0] += MIX_16_8(ch->vol[0] * l);
paintbuffer[starttime+i].s[1] += MIX_16_8(ch->vol[1] * r);
}
}
else
{
sfx = (signed short *fte_restrict)sc->data + (pos>>PITCHSHIFT)*2;
for (i=0 ; i<count ; i++)
{
paintbuffer[starttime+i].s[0] += MIX_16_8(*sfx++ * leftvol);
paintbuffer[starttime+i].s[1] += MIX_16_8(*sfx++ * rightvol);
}
}
}
static void SND_PaintChannel16_O4I1 (channel_t *ch, sfxcache_t *sc, int count, int rate)
{
int vol[4];
signed short *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
vol[0] = ch->vol[0];
vol[1] = ch->vol[1];
vol[2] = ch->vol[2];
vol[3] = ch->vol[3];
if (rate != (1<<PITCHSHIFT))
{
signed short data;
sfx = (signed short *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += rate;
paintbuffer[i].s[0] += MIX_16_8(vol[0] * data);
paintbuffer[i].s[1] += MIX_16_8(vol[1] * data);
paintbuffer[i].s[2] += MIX_16_8(vol[2] * data);
paintbuffer[i].s[3] += MIX_16_8(vol[3] * data);
}
}
else
{
sfx = (signed short *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += MIX_16_8(sfx[i] * vol[0]);
paintbuffer[i].s[1] += MIX_16_8(sfx[i] * vol[1]);
paintbuffer[i].s[2] += MIX_16_8(sfx[i] * vol[2]);
paintbuffer[i].s[3] += MIX_16_8(sfx[i] * vol[3]);
}
}
}
static void SND_PaintChannel16_O6I1 (channel_t *ch, sfxcache_t *sc, int count, int rate)
{
int vol[6];
signed short *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
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];
if (rate != (1<<PITCHSHIFT))
{
signed short data;
sfx = (signed short *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += rate;
paintbuffer[i].s[0] += MIX_16_8(vol[0] * data);
paintbuffer[i].s[1] += MIX_16_8(vol[1] * data);
paintbuffer[i].s[2] += MIX_16_8(vol[2] * data);
paintbuffer[i].s[3] += MIX_16_8(vol[3] * data);
paintbuffer[i].s[4] += MIX_16_8(vol[4] * data);
paintbuffer[i].s[5] += MIX_16_8(vol[5] * data);
}
}
else
{
sfx = (signed short *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += MIX_16_8(sfx[i] * vol[0]);
paintbuffer[i].s[1] += MIX_16_8(sfx[i] * vol[1]);
paintbuffer[i].s[2] += MIX_16_8(sfx[i] * vol[2]);
paintbuffer[i].s[3] += MIX_16_8(sfx[i] * vol[3]);
paintbuffer[i].s[4] += MIX_16_8(sfx[i] * vol[4]);
paintbuffer[i].s[5] += MIX_16_8(sfx[i] * vol[5]);
}
}
}
static void SND_PaintChannel16_O8I1 (channel_t *ch, sfxcache_t *sc, int count, int rate)
{
int vol[8];
signed short *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
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];
vol[6] = ch->vol[6];
vol[7] = ch->vol[7];
if (rate != (1<<PITCHSHIFT))
{
signed short data;
sfx = (signed short *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += rate;
paintbuffer[i].s[0] += MIX_16_8(vol[0] * data);
paintbuffer[i].s[1] += MIX_16_8(vol[1] * data);
paintbuffer[i].s[2] += MIX_16_8(vol[2] * data);
paintbuffer[i].s[3] += MIX_16_8(vol[3] * data);
paintbuffer[i].s[4] += MIX_16_8(vol[4] * data);
paintbuffer[i].s[5] += MIX_16_8(vol[5] * data);
paintbuffer[i].s[6] += MIX_16_8(vol[6] * data);
paintbuffer[i].s[7] += MIX_16_8(vol[7] * data);
}
}
else
{
sfx = (signed short *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += MIX_16_8(sfx[i] * vol[0]);
paintbuffer[i].s[1] += MIX_16_8(sfx[i] * vol[1]);
paintbuffer[i].s[2] += MIX_16_8(sfx[i] * vol[2]);
paintbuffer[i].s[3] += MIX_16_8(sfx[i] * vol[3]);
paintbuffer[i].s[4] += MIX_16_8(sfx[i] * vol[4]);
paintbuffer[i].s[5] += MIX_16_8(sfx[i] * vol[5]);
paintbuffer[i].s[6] += MIX_16_8(sfx[i] * vol[6]);
paintbuffer[i].s[7] += MIX_16_8(sfx[i] * vol[7]);
}
}
}
#ifdef MIXER_F32
static void SND_PaintChannel32F_O2I1 (channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate)
{
float data;
int left, right;
int leftvol, rightvol;
float *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
leftvol = ch->vol[0]*128;
rightvol = ch->vol[1]*128;
if (rate != (1<<PITCHSHIFT))
{
sfx = (float *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
float frac = pos&((1<<PITCHSHIFT)-1);
data = sfx[pos>>PITCHSHIFT] * (1-frac) + sfx[(pos>>PITCHSHIFT)+1] * frac;
pos += rate;
paintbuffer[starttime+i].s[0] += (leftvol * data);
paintbuffer[starttime+i].s[1] += (rightvol * data);
}
}
else
{
sfx = (float *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
data = sfx[i];
left = (data * leftvol);
right = (data * rightvol);
paintbuffer[starttime+i].s[0] += left;
paintbuffer[starttime+i].s[1] += right;
}
}
}
static void SND_PaintChannel32F_O2I2 (channel_t *ch, sfxcache_t *sc, int starttime, int count, int rate)
{
float leftvol, rightvol;
float *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
leftvol = ch->vol[0]*128;
rightvol = ch->vol[1]*128;
if (rate != (1<<PITCHSHIFT))
{
float l, r;
sfx = (float *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
l = sfx[(pos>>(PITCHSHIFT-1))&~1];
r = sfx[(pos>>(PITCHSHIFT-1))|1];
pos += rate;
paintbuffer[starttime+i].s[0] += (l * leftvol);
paintbuffer[starttime+i].s[1] += (r * rightvol);
}
}
else
{
sfx = (float *fte_restrict)sc->data + (pos>>PITCHSHIFT)*2;
for (i=0 ; i<count ; i++)
{
paintbuffer[starttime+i].s[0] += (*sfx++ * leftvol);
paintbuffer[starttime+i].s[1] += (*sfx++ * rightvol);
}
}
}
static void SND_PaintChannel32F_O4I1 (channel_t *ch, sfxcache_t *sc, int count, int rate)
{
int vol[4];
float *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
vol[0] = ch->vol[0]*128;
vol[1] = ch->vol[1]*128;
vol[2] = ch->vol[2]*128;
vol[3] = ch->vol[3]*128;
if (rate != (1<<PITCHSHIFT))
{
float data;
sfx = (float *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += rate;
paintbuffer[i].s[0] += (vol[0] * data);
paintbuffer[i].s[1] += (vol[1] * data);
paintbuffer[i].s[2] += (vol[2] * data);
paintbuffer[i].s[3] += (vol[3] * data);
}
}
else
{
sfx = (float *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += (sfx[i] * vol[0]);
paintbuffer[i].s[1] += (sfx[i] * vol[1]);
paintbuffer[i].s[2] += (sfx[i] * vol[2]);
paintbuffer[i].s[3] += (sfx[i] * vol[3]);
}
}
}
static void SND_PaintChannel32F_O6I1 (channel_t *ch, sfxcache_t *sc, int count, int rate)
{
int vol[6];
float *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
vol[0] = ch->vol[0]*128;
vol[1] = ch->vol[1]*128;
vol[2] = ch->vol[2]*128;
vol[3] = ch->vol[3]*128;
vol[4] = ch->vol[4]*128;
vol[5] = ch->vol[5]*128;
if (rate != (1<<PITCHSHIFT))
{
float data;
sfx = (float *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += rate;
paintbuffer[i].s[0] += (vol[0] * data);
paintbuffer[i].s[1] += (vol[1] * data);
paintbuffer[i].s[2] += (vol[2] * data);
paintbuffer[i].s[3] += (vol[3] * data);
paintbuffer[i].s[4] += (vol[4] * data);
paintbuffer[i].s[5] += (vol[5] * data);
}
}
else
{
sfx = (float *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += (sfx[i] * vol[0]);
paintbuffer[i].s[1] += (sfx[i] * vol[1]);
paintbuffer[i].s[2] += (sfx[i] * vol[2]);
paintbuffer[i].s[3] += (sfx[i] * vol[3]);
paintbuffer[i].s[4] += (sfx[i] * vol[4]);
paintbuffer[i].s[5] += (sfx[i] * vol[5]);
}
}
}
static void SND_PaintChannel32F_O8I1 (channel_t *ch, sfxcache_t *sc, int count, int rate)
{
int vol[8];
float *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
//input is +/- 1, output is +/- 32767. ch->vol is 0-255, so we just need to scale up by an extra 128
vol[0] = ch->vol[0]*128;
vol[1] = ch->vol[1]*128;
vol[2] = ch->vol[2]*128;
vol[3] = ch->vol[3]*128;
vol[4] = ch->vol[4]*128;
vol[5] = ch->vol[5]*128;
vol[6] = ch->vol[6]*128;
vol[7] = ch->vol[7]*128;
if (rate != (1<<PITCHSHIFT))
{
float data;
sfx = (float *fte_restrict)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += rate;
paintbuffer[i].s[0] += (vol[0] * data);
paintbuffer[i].s[1] += (vol[1] * data);
paintbuffer[i].s[2] += (vol[2] * data);
paintbuffer[i].s[3] += (vol[3] * data);
paintbuffer[i].s[4] += (vol[4] * data);
paintbuffer[i].s[5] += (vol[5] * data);
paintbuffer[i].s[6] += (vol[6] * data);
paintbuffer[i].s[7] += (vol[7] * data);
}
}
else
{
sfx = (float *fte_restrict)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += (sfx[i] * vol[0]);
paintbuffer[i].s[1] += (sfx[i] * vol[1]);
paintbuffer[i].s[2] += (sfx[i] * vol[2]);
paintbuffer[i].s[3] += (sfx[i] * vol[3]);
paintbuffer[i].s[4] += (sfx[i] * vol[4]);
paintbuffer[i].s[5] += (sfx[i] * vol[5]);
paintbuffer[i].s[6] += (sfx[i] * vol[6]);
paintbuffer[i].s[7] += (sfx[i] * vol[7]);
}
}
}
#endif
#endif
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