You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
497 lines
10 KiB
497 lines
10 KiB
/* |
|
Copyright (C) 1997-2001 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 "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__ && id386) |
|
#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 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 long *pbuf; |
|
|
|
pbuf = (unsigned 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__ && id386) |
|
#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; |
|
|
|
lscale = snd_scaletable[ ch->leftvol >> 11]; |
|
rscale = snd_scaletable[ ch->rightvol >> 11]; |
|
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; |
|
} |
|
|
|
|