mirror of
https://github.com/blendogames/thirtyflightsofloving.git
synced 2024-11-14 16:40:57 +00:00
502 lines
10 KiB
C
502 lines
10 KiB
C
/*
|
|
===========================================================================
|
|
Copyright (C) 1997-2001 Id Software, Inc.
|
|
|
|
This file is part of Quake 2 source code.
|
|
|
|
Quake 2 source code 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.
|
|
|
|
Quake 2 source code 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 Quake 2 source code; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
===========================================================================
|
|
*/
|
|
|
|
// snd_mix.c -- portable code to mix sounds for snd_dma.c
|
|
|
|
#include "client.h"
|
|
#include "snd_loc.h"
|
|
|
|
#define PAINTBUFFER_SIZE 2048
|
|
portable_samplepair_t paintbuffer[PAINTBUFFER_SIZE];
|
|
int snd_scaletable[32][256];
|
|
int *snd_p, snd_linear_count, snd_vol;
|
|
short *snd_out;
|
|
|
|
void S_WriteLinearBlastStereo16 (void);
|
|
|
|
#if !(defined __linux__ && defined __i386__)
|
|
#if !id386
|
|
|
|
void S_WriteLinearBlastStereo16 (void)
|
|
{
|
|
int i;
|
|
int val;
|
|
|
|
for (i=0 ; i<snd_linear_count ; i+=2)
|
|
{
|
|
val = snd_p[i]>>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]>>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;
|
|
}
|
|
}
|
|
#else
|
|
__declspec( naked ) void S_WriteLinearBlastStereo16 (void)
|
|
{
|
|
__asm {
|
|
|
|
push edi
|
|
push ebx
|
|
mov ecx,ds:dword ptr[snd_linear_count]
|
|
mov ebx,ds:dword ptr[snd_p]
|
|
mov edi,ds:dword ptr[snd_out]
|
|
LWLBLoopTop:
|
|
mov eax,ds:dword ptr[-8+ebx+ecx*4]
|
|
sar eax,8
|
|
cmp eax,07FFFh
|
|
jg LClampHigh
|
|
cmp eax,0FFFF8000h
|
|
jnl LClampDone
|
|
mov eax,0FFFF8000h
|
|
jmp LClampDone
|
|
LClampHigh:
|
|
mov eax,07FFFh
|
|
LClampDone:
|
|
mov edx,ds:dword ptr[-4+ebx+ecx*4]
|
|
sar edx,8
|
|
cmp edx,07FFFh
|
|
jg LClampHigh2
|
|
cmp edx,0FFFF8000h
|
|
jnl LClampDone2
|
|
mov edx,0FFFF8000h
|
|
jmp LClampDone2
|
|
LClampHigh2:
|
|
mov edx,07FFFh
|
|
LClampDone2:
|
|
shl edx,16
|
|
and eax,0FFFFh
|
|
or edx,eax
|
|
mov ds:dword ptr[-4+edi+ecx*2],edx
|
|
sub ecx,2
|
|
jnz LWLBLoopTop
|
|
pop ebx
|
|
pop edi
|
|
ret
|
|
}
|
|
}
|
|
|
|
#endif
|
|
#endif
|
|
|
|
void S_TransferStereo16 (unsigned int /*long*/ *pbuf, int endtime)
|
|
{
|
|
int lpos;
|
|
int lpaintedtime;
|
|
|
|
snd_p = (int *) paintbuffer;
|
|
lpaintedtime = paintedtime;
|
|
|
|
while (lpaintedtime < endtime)
|
|
{
|
|
// handle recirculating buffer issues
|
|
lpos = lpaintedtime & ((dma.samples>>1)-1);
|
|
|
|
snd_out = (short *) pbuf + (lpos<<1);
|
|
|
|
snd_linear_count = (dma.samples>>1) - lpos;
|
|
if (lpaintedtime + snd_linear_count > endtime)
|
|
snd_linear_count = endtime - lpaintedtime;
|
|
|
|
snd_linear_count <<= 1;
|
|
|
|
// write a linear blast of samples
|
|
S_WriteLinearBlastStereo16 ();
|
|
|
|
snd_p += snd_linear_count;
|
|
lpaintedtime += (snd_linear_count>>1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
===================
|
|
S_TransferPaintBuffer
|
|
|
|
===================
|
|
*/
|
|
void S_TransferPaintBuffer(int endtime)
|
|
{
|
|
int out_idx;
|
|
int count;
|
|
int out_mask;
|
|
int *p;
|
|
int step;
|
|
int val;
|
|
unsigned int /*long*/ *pbuf;
|
|
|
|
pbuf = (unsigned int /*long*/ *)dma.buffer;
|
|
|
|
if (s_testsound->value)
|
|
{
|
|
int i;
|
|
int count;
|
|
|
|
// write a fixed sine wave
|
|
count = (endtime - paintedtime);
|
|
for (i=0 ; i<count ; i++)
|
|
paintbuffer[i].left = paintbuffer[i].right = sin((paintedtime+i)*0.1)*20000*256;
|
|
}
|
|
|
|
|
|
if (dma.samplebits == 16 && dma.channels == 2)
|
|
{ // optimized case
|
|
S_TransferStereo16 (pbuf, endtime);
|
|
}
|
|
else
|
|
{ // general case
|
|
p = (int *) paintbuffer;
|
|
count = (endtime - paintedtime) * dma.channels;
|
|
out_mask = dma.samples - 1;
|
|
out_idx = paintedtime * dma.channels & out_mask;
|
|
step = 3 - dma.channels;
|
|
|
|
if (dma.samplebits == 16)
|
|
{
|
|
short *out = (short *) pbuf;
|
|
while (count--)
|
|
{
|
|
val = *p >> 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 (dma.samplebits == 8)
|
|
{
|
|
unsigned char *out = (unsigned char *) pbuf;
|
|
while (count--)
|
|
{
|
|
val = *p >> 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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
===============================================================================
|
|
|
|
CHANNEL MIXING
|
|
|
|
===============================================================================
|
|
*/
|
|
|
|
void S_PaintChannelFrom8 (channel_t *ch, sfxcache_t *sc, int endtime, int offset);
|
|
void S_PaintChannelFrom16 (channel_t *ch, sfxcache_t *sc, int endtime, int offset);
|
|
|
|
void S_PaintChannels(int endtime)
|
|
{
|
|
int i;
|
|
int end;
|
|
channel_t *ch;
|
|
sfxcache_t *sc;
|
|
int ltime, count;
|
|
playsound_t *ps;
|
|
|
|
snd_vol = s_volume->value*256;
|
|
|
|
//Com_Printf ("%i to %i\n", paintedtime, endtime);
|
|
while (paintedtime < endtime)
|
|
{
|
|
// if paintbuffer is smaller than DMA buffer
|
|
end = endtime;
|
|
if (endtime - paintedtime > PAINTBUFFER_SIZE)
|
|
end = paintedtime + PAINTBUFFER_SIZE;
|
|
|
|
// start any playsounds
|
|
while (1)
|
|
{
|
|
ps = s_pendingplays.next;
|
|
if (ps == &s_pendingplays)
|
|
break; // no more pending sounds
|
|
if (ps->begin <= paintedtime)
|
|
{
|
|
S_IssuePlaysound (ps);
|
|
continue;
|
|
}
|
|
|
|
if (ps->begin < end)
|
|
end = ps->begin; // stop here
|
|
break;
|
|
}
|
|
|
|
// clear the paint buffer
|
|
if (s_rawend < paintedtime)
|
|
{
|
|
// Com_Printf ("clear\n");
|
|
memset(paintbuffer, 0, (end - paintedtime) * sizeof(portable_samplepair_t));
|
|
}
|
|
else
|
|
{ // copy from the streaming sound source
|
|
int s;
|
|
int stop;
|
|
|
|
stop = (end < s_rawend) ? end : s_rawend;
|
|
|
|
for (i=paintedtime ; i<stop ; i++)
|
|
{
|
|
s = i&(MAX_RAW_SAMPLES-1);
|
|
paintbuffer[i-paintedtime] = s_rawsamples[s];
|
|
}
|
|
// if (i != end)
|
|
// Com_Printf ("partial stream\n");
|
|
// else
|
|
// Com_Printf ("full stream\n");
|
|
for ( ; i<end ; i++)
|
|
{
|
|
paintbuffer[i-paintedtime].left =
|
|
paintbuffer[i-paintedtime].right = 0;
|
|
}
|
|
}
|
|
|
|
|
|
// paint in the channels.
|
|
ch = channels;
|
|
for (i=0; i<MAX_CHANNELS ; i++, ch++)
|
|
{
|
|
ltime = paintedtime;
|
|
|
|
while (ltime < end)
|
|
{
|
|
if (!ch->sfx || (!ch->leftvol && !ch->rightvol) )
|
|
break;
|
|
|
|
// max painting is to the end of the buffer
|
|
count = end - ltime;
|
|
|
|
// might be stopped by running out of data
|
|
if (ch->end - ltime < count)
|
|
count = ch->end - ltime;
|
|
|
|
sc = S_LoadSound (ch->sfx);
|
|
if (!sc)
|
|
break;
|
|
|
|
if (count > 0 && ch->sfx)
|
|
{
|
|
if (sc->width == 1)// FIXME; 8 bit asm is wrong now
|
|
S_PaintChannelFrom8(ch, sc, count, ltime - paintedtime);
|
|
else
|
|
S_PaintChannelFrom16(ch, sc, count, ltime - paintedtime);
|
|
|
|
ltime += count;
|
|
}
|
|
|
|
// if at end of loop, restart
|
|
if (ltime >= ch->end)
|
|
{
|
|
if (ch->autosound)
|
|
{ // autolooping sounds always go back to start
|
|
ch->pos = 0;
|
|
ch->end = ltime + sc->length;
|
|
}
|
|
else if (sc->loopstart >= 0)
|
|
{
|
|
ch->pos = sc->loopstart;
|
|
ch->end = ltime + sc->length - ch->pos;
|
|
}
|
|
else
|
|
{ // channel just stopped
|
|
ch->sfx = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// transfer out according to DMA format
|
|
S_TransferPaintBuffer(end);
|
|
paintedtime = end;
|
|
}
|
|
}
|
|
|
|
void S_InitScaletable (void)
|
|
{
|
|
int i, j;
|
|
int scale;
|
|
|
|
s_volume->modified = false;
|
|
for (i=0 ; i<32 ; i++)
|
|
{
|
|
scale = i * 8 * 256 * s_volume->value;
|
|
for (j=0 ; j<256 ; j++)
|
|
snd_scaletable[i][j] = ((signed char)j) * scale;
|
|
}
|
|
}
|
|
|
|
|
|
#if !(defined __linux__ && defined __i386__)
|
|
#if !id386
|
|
|
|
void S_PaintChannelFrom8 (channel_t *ch, sfxcache_t *sc, int count, int offset)
|
|
{
|
|
int data;
|
|
int *lscale, *rscale;
|
|
unsigned char *sfx;
|
|
int i;
|
|
portable_samplepair_t *samp;
|
|
|
|
if (ch->leftvol > 255)
|
|
ch->leftvol = 255;
|
|
if (ch->rightvol > 255)
|
|
ch->rightvol = 255;
|
|
|
|
//ZOID-- >>11 has been changed to >>3, >>11 didn't make much sense
|
|
//as it would always be zero.
|
|
lscale = snd_scaletable[ ch->leftvol >> 3];
|
|
rscale = snd_scaletable[ ch->rightvol >> 3];
|
|
sfx = (signed char *)sc->data + ch->pos;
|
|
|
|
samp = &paintbuffer[offset];
|
|
|
|
for (i=0 ; i<count ; i++, samp++)
|
|
{
|
|
data = sfx[i];
|
|
samp->left += lscale[data];
|
|
samp->right += rscale[data];
|
|
}
|
|
|
|
ch->pos += count;
|
|
}
|
|
|
|
#else
|
|
|
|
__declspec( naked ) void S_PaintChannelFrom8 (channel_t *ch, sfxcache_t *sc, int count, int offset)
|
|
{
|
|
__asm {
|
|
push esi
|
|
push edi
|
|
push ebx
|
|
push ebp
|
|
mov ebx,ds:dword ptr[4+16+esp]
|
|
mov esi,ds:dword ptr[8+16+esp]
|
|
mov eax,ds:dword ptr[4+ebx]
|
|
mov edx,ds:dword ptr[8+ebx]
|
|
cmp eax,255
|
|
jna LLeftSet
|
|
mov eax,255
|
|
LLeftSet:
|
|
cmp edx,255
|
|
jna LRightSet
|
|
mov edx,255
|
|
LRightSet:
|
|
and eax,0F8h
|
|
add esi,20
|
|
and edx,0F8h
|
|
mov edi,ds:dword ptr[16+ebx]
|
|
mov ecx,ds:dword ptr[12+16+esp]
|
|
add esi,edi
|
|
shl eax,7
|
|
add edi,ecx
|
|
shl edx,7
|
|
mov ds:dword ptr[16+ebx],edi
|
|
add eax,offset snd_scaletable
|
|
add edx,offset snd_scaletable
|
|
sub ebx,ebx
|
|
mov bl,ds:byte ptr[-1+esi+ecx*1]
|
|
test ecx,1
|
|
jz LMix8Loop
|
|
mov edi,ds:dword ptr[eax+ebx*4]
|
|
mov ebp,ds:dword ptr[edx+ebx*4]
|
|
add edi,ds:dword ptr[paintbuffer+0-8+ecx*8]
|
|
add ebp,ds:dword ptr[paintbuffer+4-8+ecx*8]
|
|
mov ds:dword ptr[paintbuffer+0-8+ecx*8],edi
|
|
mov ds:dword ptr[paintbuffer+4-8+ecx*8],ebp
|
|
mov bl,ds:byte ptr[-2+esi+ecx*1]
|
|
dec ecx
|
|
jz LDone
|
|
LMix8Loop:
|
|
mov edi,ds:dword ptr[eax+ebx*4]
|
|
mov ebp,ds:dword ptr[edx+ebx*4]
|
|
add edi,ds:dword ptr[paintbuffer+0-8+ecx*8]
|
|
add ebp,ds:dword ptr[paintbuffer+4-8+ecx*8]
|
|
mov bl,ds:byte ptr[-2+esi+ecx*1]
|
|
mov ds:dword ptr[paintbuffer+0-8+ecx*8],edi
|
|
mov ds:dword ptr[paintbuffer+4-8+ecx*8],ebp
|
|
mov edi,ds:dword ptr[eax+ebx*4]
|
|
mov ebp,ds:dword ptr[edx+ebx*4]
|
|
mov bl,ds:byte ptr[-3+esi+ecx*1]
|
|
add edi,ds:dword ptr[paintbuffer+0-8*2+ecx*8]
|
|
add ebp,ds:dword ptr[paintbuffer+4-8*2+ecx*8]
|
|
mov ds:dword ptr[paintbuffer+0-8*2+ecx*8],edi
|
|
mov ds:dword ptr[paintbuffer+4-8*2+ecx*8],ebp
|
|
sub ecx,2
|
|
jnz LMix8Loop
|
|
LDone:
|
|
pop ebp
|
|
pop ebx
|
|
pop edi
|
|
pop esi
|
|
ret
|
|
}
|
|
}
|
|
|
|
#endif
|
|
#endif
|
|
|
|
void S_PaintChannelFrom16 (channel_t *ch, sfxcache_t *sc, int count, int offset)
|
|
{
|
|
int data;
|
|
int left, right;
|
|
int leftvol, rightvol;
|
|
signed short *sfx;
|
|
int i;
|
|
portable_samplepair_t *samp;
|
|
|
|
leftvol = ch->leftvol*snd_vol;
|
|
rightvol = ch->rightvol*snd_vol;
|
|
sfx = (signed short *)sc->data + ch->pos;
|
|
|
|
samp = &paintbuffer[offset];
|
|
for (i=0 ; i<count ; i++, samp++)
|
|
{
|
|
data = sfx[i];
|
|
left = (data * leftvol)>>8;
|
|
right = (data * rightvol)>>8;
|
|
samp->left += left;
|
|
samp->right += right;
|
|
}
|
|
|
|
ch->pos += count;
|
|
}
|
|
|