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fteqw/engine/client/snd_mix.c
Spoike df22ebd757 Tweaks for voicechat: 
Added cl_voip_test cvar, so you can hear/test yourself.
Added potential support for opus.
audio ducking
autogain switched off by default. its nice for pure speech but shite for push-to-talk, voice activation, or indeed anything else.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4375 fc73d0e0-1445-4013-8a0c-d673dee63da5
2013-05-31 01:16:07 +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"
#define PAINTBUFFER_SIZE 2048
float voicevolumemod = 1;
portable_samplegroup_t paintbuffer[PAINTBUFFER_SIZE];
int *snd_p, snd_vol;
short *snd_out;
void S_TransferPaintBuffer(soundcardinfo_t *sc, int endtime)
{
unsigned int out_idx;
unsigned int count;
unsigned int outlimit;
int *p;
int val;
// int snd_vol;
short *pbuf;
int i, numc;
p = (int *) paintbuffer;
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;
if (sc->sn.samplebits == 16)
{
short *out = (short *) pbuf;
while (count)
{
for (i = 0; i < numc; i++)
{
val = *p;// * snd_vol) >> 8;
p++;
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;
}
}
else if (sc->sn.samplebits == 8)
{
unsigned char *out = (unsigned char *) pbuf;
while (count)
{
for (i = 0; i < numc; i++)
{
val = *p;// * snd_vol) >> 8;
p++;
if (val > 0x7fff)
val = 0x7fff;
else if (val < (short)0x8000)
val = (short)0x8000;
out[out_idx] = (val>>8) + 128;
out_idx = (out_idx + 1) % outlimit;
}
p += MAXSOUNDCHANNELS - numc;
count -= numc;
}
}
sc->Unlock(sc, pbuf);
}
/*
===============================================================================
CHANNEL MIXING
===============================================================================
*/
void SND_PaintChannelFrom8 (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_PaintChannelFrom8_8Speaker (channel_t *ch, sfxcache_t *sc, int count);
void SND_PaintChannelFrom16_8Speaker (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);
//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;
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)
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.decodedata && s->decoder.buf)
{
scache = s->decoder.buf;
ch->pos += (end-sc->paintedtime)*ch->rate;
if (ch->pos > scache->length)
{
ch->pos = 0;
if (scache->loopstart != -1)
ch->pos = scache->loopstart<<PITCHSHIFT;
else if (!ch->looping)
{
ch->sfx = NULL;
if (s->decoder.abort)
{
if (!S_IsPlayingSomewhere(s))
s->decoder.abort(s);
}
}
}
}
continue;
}
ltime = sc->paintedtime;
while (ltime < end)
{
if (s->decoder.decodedata)
scache = s->decoder.decodedata(s, &scachebuf, ch->pos>>PITCHSHIFT, 1 + (((end - ltime) * ch->rate)>>PITCHSHIFT)); /*1 for luck - balances audio termination below*/
else
scache = s->decoder.buf;
if (!scache)
{
ch->sfx = NULL;
break;
}
// 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) / ch->rate;
// mix the smaller of how much is available or the time left
count = min(avail, end - ltime);
if (avail < 0)
{
Sys_Printf("sound already past end of buffer\n");
avail = 0;
count = 0;
}
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*ch->rate;
continue;
}
if (scache->width == 1)
{
if (scache->numchannels==2)
SND_PaintChannelFrom8Stereo(ch, scache, count);
else if (sc->sn.numchannels == 8)
SND_PaintChannelFrom8_8Speaker(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->numchannels==2)
SND_PaintChannelFrom16Stereo(ch, scache, count);
else if (sc->sn.numchannels == 8)
SND_PaintChannelFrom16_8Speaker(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);
}
ltime += count;
ch->pos += ch->rate * count;
}
if (count == avail)
{
if (scache->loopstart != -1) /*some wavs contain a loop offset directly in the sound file, such samples loop even if a non-looping builtin was used*/
{
if (scache->length <= scache->loopstart)
break;
ch->pos &= ~((-1)<<PITCHSHIFT); /*clear out all but the subsample offset*/
ch->pos += scache->loopstart<<PITCHSHIFT;
if (!scache->length)
{
scache->loopstart=-1;
break;
}
}
else if (ch->looping && scache->length) /*(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.abort)
{
if (!S_IsPlayingSomewhere(s))
s->decoder.abort(s);
}
break;
}
}
}
}
// transfer out according to DMA format
S_TransferPaintBuffer(sc, end);
sc->paintedtime = end;
}
}
void SND_PaintChannelFrom8 (channel_t *ch, sfxcache_t *sc, int count)
{
int data;
signed char *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
if (ch->rate != (1<<PITCHSHIFT))
{
sfx = (signed char *)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += ch->rate;
paintbuffer[i].s[0] += ch->vol[0] * data;
paintbuffer[i].s[1] += ch->vol[1] * data;
}
}
else
{
sfx = (signed char *)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
data = sfx[i];
paintbuffer[i].s[0] += ch->vol[0] * data;
paintbuffer[i].s[1] += ch->vol[1] * data;
}
}
}
void SND_PaintChannelFrom8Stereo (channel_t *ch, sfxcache_t *sc, int count)
{
// int data;
signed char *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
if (ch->rate != (1<<PITCHSHIFT))
{
sfx = (signed char *)sc->data;
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += ch->vol[0] * sfx[(pos>>(PITCHSHIFT-1))&~1];
paintbuffer[i].s[1] += ch->vol[1] * sfx[(pos>>(PITCHSHIFT-1))|1];
pos += ch->rate;
}
}
else
{
sfx = (signed char *)sc->data + (pos>>PITCHSHIFT)*2;
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += ch->vol[0] * sfx[(i<<1)];
paintbuffer[i].s[1] += ch->vol[1] * sfx[(i<<1)+1];
}
}
}
void SND_PaintChannelFrom8_4Speaker (channel_t *ch, sfxcache_t *sc, int count)
{
signed char *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
if (ch->rate != (1<<PITCHSHIFT))
{
signed char data;
sfx = (signed char *)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += ch->rate;
paintbuffer[i].s[0] += ch->vol[0] * data;
paintbuffer[i].s[1] += ch->vol[1] * data;
paintbuffer[i].s[2] += ch->vol[2] * data;
paintbuffer[i].s[3] += ch->vol[3] * data;
}
}
else
{
sfx = (signed char *)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += ch->vol[0] * sfx[i];
paintbuffer[i].s[1] += ch->vol[1] * sfx[i];
paintbuffer[i].s[2] += ch->vol[2] * sfx[i];
paintbuffer[i].s[3] += ch->vol[3] * sfx[i];
}
}
}
void SND_PaintChannelFrom8_6Speaker (channel_t *ch, sfxcache_t *sc, int count)
{
signed char *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
if (ch->rate != (1<<PITCHSHIFT))
{
signed char data;
sfx = (signed char *)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += ch->rate;
paintbuffer[i].s[0] += ch->vol[0] * data;
paintbuffer[i].s[1] += ch->vol[1] * data;
paintbuffer[i].s[2] += ch->vol[2] * data;
paintbuffer[i].s[3] += ch->vol[3] * data;
paintbuffer[i].s[4] += ch->vol[4] * data;
paintbuffer[i].s[5] += ch->vol[5] * data;
}
}
else
{
sfx = (signed char *)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += ch->vol[0] * sfx[i];
paintbuffer[i].s[1] += ch->vol[1] * sfx[i];
paintbuffer[i].s[2] += ch->vol[2] * sfx[i];
paintbuffer[i].s[3] += ch->vol[3] * sfx[i];
paintbuffer[i].s[4] += ch->vol[4] * sfx[i];
paintbuffer[i].s[5] += ch->vol[5] * sfx[i];
}
}
}
void SND_PaintChannelFrom8_8Speaker (channel_t *ch, sfxcache_t *sc, int count)
{
signed char *sfx;
int i;
unsigned int pos = ch->pos-(sc->soundoffset<<PITCHSHIFT);
if (ch->rate != (1<<PITCHSHIFT))
{
signed char data;
sfx = (signed char *)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += ch->rate;
paintbuffer[i].s[0] += ch->vol[0] * data;
paintbuffer[i].s[1] += ch->vol[1] * data;
paintbuffer[i].s[2] += ch->vol[2] * data;
paintbuffer[i].s[3] += ch->vol[3] * data;
paintbuffer[i].s[4] += ch->vol[4] * data;
paintbuffer[i].s[5] += ch->vol[5] * data;
paintbuffer[i].s[6] += ch->vol[6] * data;
paintbuffer[i].s[7] += ch->vol[7] * data;
}
}
else
{
sfx = (signed char *)sc->data + (pos>>PITCHSHIFT);
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += ch->vol[0] * sfx[i];
paintbuffer[i].s[1] += ch->vol[1] * sfx[i];
paintbuffer[i].s[2] += ch->vol[2] * sfx[i];
paintbuffer[i].s[3] += ch->vol[3] * sfx[i];
paintbuffer[i].s[4] += ch->vol[4] * sfx[i];
paintbuffer[i].s[5] += ch->vol[5] * sfx[i];
paintbuffer[i].s[6] += ch->vol[6] * sfx[i];
paintbuffer[i].s[7] += ch->vol[7] * sfx[i];
}
}
}
void SND_PaintChannelFrom16 (channel_t *ch, sfxcache_t *sc, int count)
{
int data;
int left, right;
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 (ch->rate != (1<<PITCHSHIFT))
{
signed short data;
sfx = (signed short *)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += ch->rate;
paintbuffer[i].s[0] += (leftvol * data)>>8;
paintbuffer[i].s[1] += (rightvol * data)>>8;
}
}
else
{
sfx = (signed short *)sc->data + (pos>>PITCHSHIFT);
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;
}
}
}
void SND_PaintChannelFrom16Stereo (channel_t *ch, sfxcache_t *sc, int count)
{
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 (ch->rate != (1<<PITCHSHIFT))
{
signed short l, r;
sfx = (signed short *)sc->data;
for (i=0 ; i<count ; i++)
{
l = sfx[(pos>>(PITCHSHIFT-1))&~1];
r = sfx[(pos>>(PITCHSHIFT-1))|1];
pos += ch->rate;
paintbuffer[i].s[0] += (ch->vol[0] * l)>>8;
paintbuffer[i].s[1] += (ch->vol[1] * r)>>8;
}
}
else
{
sfx = (signed short *)sc->data + (pos>>PITCHSHIFT)*2;
for (i=0 ; i<count ; i++)
{
paintbuffer[i].s[0] += (*sfx++ * leftvol) >> 8;
paintbuffer[i].s[1] += (*sfx++ * rightvol) >> 8;
}
}
}
void SND_PaintChannelFrom16_4Speaker (channel_t *ch, sfxcache_t *sc, int count)
{
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 (ch->rate != (1<<PITCHSHIFT))
{
signed short data;
sfx = (signed short *)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += ch->rate;
paintbuffer[i].s[0] += (vol[0] * data)>>8;
paintbuffer[i].s[1] += (vol[1] * data)>>8;
paintbuffer[i].s[2] += (vol[2] * data)>>8;
paintbuffer[i].s[3] += (vol[3] * data)>>8;
}
}
else
{
sfx = (signed short *)sc->data + 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;
}
}
}
void SND_PaintChannelFrom16_6Speaker (channel_t *ch, sfxcache_t *sc, int count)
{
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 (ch->rate != (1<<PITCHSHIFT))
{
signed short data;
sfx = (signed short *)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += ch->rate;
paintbuffer[i].s[0] += (vol[0] * data)>>8;
paintbuffer[i].s[1] += (vol[1] * data)>>8;
paintbuffer[i].s[2] += (vol[2] * data)>>8;
paintbuffer[i].s[3] += (vol[3] * data)>>8;
paintbuffer[i].s[4] += (vol[4] * data)>>8;
paintbuffer[i].s[5] += (vol[5] * data)>>8;
}
}
else
{
sfx = (signed short *)sc->data + (pos>>PITCHSHIFT);
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;
}
}
}
void SND_PaintChannelFrom16_8Speaker (channel_t *ch, sfxcache_t *sc, int count)
{
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 (ch->rate != (1<<PITCHSHIFT))
{
signed short data;
sfx = (signed short *)sc->data;
for (i=0 ; i<count ; i++)
{
data = sfx[pos>>PITCHSHIFT];
pos += ch->rate;
paintbuffer[i].s[0] += (vol[0] * data)>>8;
paintbuffer[i].s[1] += (vol[1] * data)>>8;
paintbuffer[i].s[2] += (vol[2] * data)>>8;
paintbuffer[i].s[3] += (vol[3] * data)>>8;
paintbuffer[i].s[4] += (vol[4] * data)>>8;
paintbuffer[i].s[5] += (vol[5] * data)>>8;
paintbuffer[i].s[6] += (vol[6] * data)>>8;
paintbuffer[i].s[7] += (vol[7] * data)>>8;
}
}
else
{
sfx = (signed short *)sc->data + (pos>>PITCHSHIFT);
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;
paintbuffer[i].s[6] += (sfx[i] * vol[6]) >> 8;
paintbuffer[i].s[7] += (sfx[i] * vol[7]) >> 8;
}
}
}
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