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rallyunlimited-engine/code/client/snd_mix.c
CuteNoiRe 8c56f85692 initial commit
2024-02-02 19:46:17 +03:00

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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
This file is part of Quake III Arena source code.
Quake III Arena 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 III Arena 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 III Arena 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_local.h"
static portable_samplepair_t paintbuffer[PAINTBUFFER_SIZE];
static int snd_vol;
// bk001119 - these not static, required by unix/snd_mixa.s
int *snd_p;
int snd_linear_count;
short *snd_out;
void S_WriteLinearBlastStereo16( void )
{
int i;
int val;
int *src = snd_p;
short *dst = snd_out;
for ( i = 0; i < snd_linear_count; i++, src++, dst++ )
{
val = *src>>8;
if ( val > 32767 )
*dst = 32767;
else if ( val < -32768 )
*dst = -32768;
else
*dst = val;
}
}
#if id386 && defined (_MSC_VER)
void S_WriteLinearBlastStereo16_MMX( void );
void S_WriteLinearBlastStereo16_SSE( void );
#ifdef _WIN32
void S_WriteLinearBlastStereo16_MMX( void )
{
__asm {
push ebx
push esi
push edi
mov esi,snd_p
mov edi,snd_out
mov ebx,snd_linear_count
test ebx,ebx
jz LExit
mov ecx,esi
and ecx,63
jz LMain
and ecx,3
jnz LTail
shr ecx,2
not ecx
add ecx,17
LClamp1:
mov eax,[esi]
sar eax,8
cmp eax,32767
jg LClampHigh1
cmp eax,-32768
jnl LClampDone1
mov eax,-32768
jmp LClampDone1
LClampHigh1:
mov eax,32767
LClampDone1:
mov [edi],ax
add esi,4
add edi,2
dec ebx
jz LExit
dec ecx
jnz LClamp1
LMain:
mov ecx,ebx
shr ecx,4
jz LTail
and ebx,15
LAgain:
movq mm0, qword ptr [esi+ 0]
movq mm1, qword ptr [esi+ 8]
movq mm2, qword ptr [esi+16]
movq mm3, qword ptr [esi+24]
movq mm4, qword ptr [esi+32]
movq mm5, qword ptr [esi+40]
movq mm6, qword ptr [esi+48]
movq mm7, qword ptr [esi+56]
psrad mm0,8
psrad mm1,8
psrad mm2,8
psrad mm3,8
psrad mm4,8
psrad mm5,8
psrad mm6,8
psrad mm7,8
packssdw mm0, mm1
packssdw mm2, mm3
packssdw mm4, mm5
packssdw mm6, mm7
movq qword ptr [edi+ 0], mm0
movq qword ptr [edi+ 8], mm2
movq qword ptr [edi+16], mm4
movq qword ptr [edi+24], mm6
add esi, 64
add edi, 32
dec ecx
jnz LAgain
LTail:
test ebx, ebx
jz LEnd
LClamp2:
mov eax,[esi]
sar eax,8
cmp eax,32767
jg LClampHigh2
cmp eax,-32768
jnl LClampDone2
mov eax,-32768
jmp LClampDone2
LClampHigh2:
mov eax,32767
LClampDone2:
mov [edi],ax
add esi,4
add edi,2
dec ebx
jnz LClamp2
LEnd:
emms
LExit:
pop edi
pop esi
pop ebx
} // __asm
}
void S_WriteLinearBlastStereo16_SSE( void )
{
__asm {
push ebx
push esi
push edi
mov esi,snd_p
mov edi,snd_out
mov ebx,snd_linear_count
test ebx,ebx
jz LExit
mov ecx,esi
and ecx,63
jz LMain
and ecx,3
jnz LTail
shr ecx,2
not ecx
add ecx,17
LClamp1:
mov eax,[esi]
sar eax,8
cmp eax,32767
jg LClampHigh1
cmp eax,-32768
jnl LClampDone1
mov eax,-32768
jmp LClampDone1
LClampHigh1:
mov eax,32767
LClampDone1:
mov [edi],ax
add esi,4
add edi,2
dec ebx
jz LExit
dec ecx
jnz LClamp1
LMain:
mov ecx,ebx
shr ecx,4
jz LTail
and ebx,15
LAgain:
movq mm0, qword ptr [esi+ 0]
movq mm1, qword ptr [esi+ 8]
movq mm2, qword ptr [esi+16]
movq mm3, qword ptr [esi+24]
movq mm4, qword ptr [esi+32]
movq mm5, qword ptr [esi+40]
movq mm6, qword ptr [esi+48]
movq mm7, qword ptr [esi+56]
psrad mm0,8
psrad mm1,8
psrad mm2,8
psrad mm3,8
psrad mm4,8
psrad mm5,8
psrad mm6,8
psrad mm7,8
packssdw mm0, mm1
packssdw mm2, mm3
packssdw mm4, mm5
packssdw mm6, mm7
movntq qword ptr [edi+ 0], mm0
movntq qword ptr [edi+ 8], mm2
movntq qword ptr [edi+16], mm4
movntq qword ptr [edi+24], mm6
add esi, 64
add edi, 32
dec ecx
jnz LAgain
LTail:
test ebx, ebx
jz LEnd
LClamp2:
mov eax,[esi]
sar eax,8
cmp eax,32767
jg LClampHigh2
cmp eax,-32768
jnl LClampDone2
mov eax,-32768
jmp LClampDone2
LClampHigh2:
mov eax,32767
LClampDone2:
mov [edi],ax
add esi,4
add edi,2
dec ebx
jnz LClamp2
LEnd:
sfence
emms
LExit:
pop edi
pop esi
pop ebx
} // __asm
}
#endif // _WIN32
#endif // id386
#if idx64 && defined (_MSC_VER) && defined(USE_WIN32_ASM)
void S_WriteLinearBlastStereo16_SSE_x64( int*, short*, int );
#endif
void S_TransferStereo16( unsigned long *pbuf, int endtime )
{
int lpos;
int ls_paintedtime;
snd_p = (int *) paintbuffer;
ls_paintedtime = s_paintedtime;
while (ls_paintedtime < endtime)
{
// handle recirculating buffer issues
lpos = ls_paintedtime & ((dma.samples>>1)-1);
snd_out = (short *) pbuf + (lpos<<1);
snd_linear_count = (dma.samples>>1) - lpos;
if (ls_paintedtime + snd_linear_count > endtime)
snd_linear_count = endtime - ls_paintedtime;
snd_linear_count <<= 1;
// write a linear blast of samples
#if id386 && defined (_MSC_VER) && defined (USE_WIN32_ASM)
if ( CPU_Flags & CPU_SSE )
S_WriteLinearBlastStereo16_SSE();
else
if ( CPU_Flags & CPU_MMX )
S_WriteLinearBlastStereo16_MMX();
else
#endif
#if idx64 && defined (_MSC_VER) && defined (USE_WIN32_ASM)
S_WriteLinearBlastStereo16_SSE_x64( snd_p, snd_out, snd_linear_count );
#else
S_WriteLinearBlastStereo16();
#endif
snd_p += snd_linear_count;
ls_paintedtime += (snd_linear_count>>1);
}
}
/*
===================
S_TransferPaintBuffer
===================
*/
static void S_TransferPaintBuffer( int endtime, byte *buffer )
{
int out_idx;
int i, count;
int out_mask;
int *p;
int step;
int val;
unsigned long *pbuf;
pbuf = (unsigned long *)buffer;
if ( s_testsound->integer ) {
// write a fixed sine wave
count = (endtime - s_paintedtime);
for (i=0 ; i<count ; i++)
paintbuffer[i].left = paintbuffer[i].right = sin((s_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 - s_paintedtime) * dma.channels;
out_mask = dma.samples - 1;
out_idx = ( s_paintedtime * dma.channels ) & out_mask;
step = 3 - dma.channels;
if ( dma.samplebits == 32 && dma.isfloat )
{
const float rdiv = 1.0f / (32768.0f * 256.0f - 128.0f); // 8388480.0f
float *out = (float *) pbuf;
while ( count-- > 0 )
{
val = *p;
p += step;
if (val > 0x7fff00) {
val = 0x7fff00;
} else if (val < -32768 * 256) {
val = -32768 * 256;
}
out[out_idx] = (float)(val + 128) * rdiv;
out_idx = (out_idx + 1) & out_mask;
}
}
else if (dma.samplebits == 16)
{
short *out = (short *) pbuf;
while ( count-- > 0 )
{
val = *p >> 8;
p += step;
if (val > 0x7fff)
val = 0x7fff;
else if (val < -32768)
val = -32768;
out[out_idx] = val;
out_idx = (out_idx + 1) & out_mask;
}
}
else if (dma.samplebits == 8)
{
unsigned char *out = (unsigned char *) pbuf;
while ( count-- > 0 )
{
val = *p >> 8;
p += step;
if (val > 0x7fff)
val = 0x7fff;
else if (val < -32768)
val = -32768;
out[out_idx] = (val>>8) + 128;
out_idx = (out_idx + 1) & out_mask;
}
}
}
if ( CL_VideoRecording() ) {
//count = (endtime - s_paintedtime) * dma.channels;
count = (clc.aviFrameEndTime - s_paintedtime) * dma.channels;
out_idx = ( s_paintedtime * dma.channels ) % dma.samples;
while ( count > 0 ) {
int n = count;
if ( n + out_idx > dma.samples )
n = dma.samples - out_idx;
CL_WriteAVIAudioFrame( buffer + out_idx * dma.samplebits / 8, n * dma.samplebits / 8 );
out_idx = (out_idx + n) % dma.samples;
count -= n;
}
}
}
/*
===============================================================================
CHANNEL MIXING
===============================================================================
*/
static void S_PaintChannelFrom16_scalar( channel_t *ch, const sfx_t *sc, int count, int sampleOffset, int bufferOffset ) {
int data, aoff, boff;
int leftvol, rightvol;
int i, j;
portable_samplepair_t *samp;
sndBuffer *chunk;
short *samples;
float ooff, fdata[2], fdiv, fleftvol, frightvol;
if (sc->soundChannels <= 0) {
return;
}
samp = &paintbuffer[ bufferOffset ];
if (ch->doppler) {
sampleOffset = sampleOffset*ch->oldDopplerScale;
}
if ( sc->soundChannels == 2 ) {
sampleOffset *= sc->soundChannels;
if ( sampleOffset & 1 ) {
sampleOffset &= ~1;
}
}
chunk = sc->soundData;
while (sampleOffset>=SND_CHUNK_SIZE) {
chunk = chunk->next;
sampleOffset -= SND_CHUNK_SIZE;
if (!chunk) {
chunk = sc->soundData;
}
}
if (!ch->doppler || ch->dopplerScale==1.0f) {
leftvol = ch->leftvol*snd_vol;
rightvol = ch->rightvol*snd_vol;
samples = chunk->sndChunk;
for ( i=0 ; i<count ; i++ ) {
data = samples[sampleOffset++];
samp[i].left += (data * leftvol)>>8;
if ( sc->soundChannels == 2 ) {
data = samples[sampleOffset++];
}
samp[i].right += (data * rightvol)>>8;
if (sampleOffset == SND_CHUNK_SIZE) {
chunk = chunk->next;
if (!chunk) {
chunk = sc->soundData;
}
samples = chunk->sndChunk;
sampleOffset = 0;
}
}
} else {
fleftvol = ch->leftvol*snd_vol;
frightvol = ch->rightvol*snd_vol;
ooff = sampleOffset;
samples = chunk->sndChunk;
for ( i=0 ; i<count ; i++ ) {
aoff = ooff;
ooff = ooff + ch->dopplerScale * sc->soundChannels;
boff = ooff;
fdata[0] = fdata[1] = 0;
for (j=aoff; j<boff; j += sc->soundChannels) {
if (j == SND_CHUNK_SIZE) {
chunk = chunk->next;
if (!chunk) {
chunk = sc->soundData;
}
samples = chunk->sndChunk;
ooff -= SND_CHUNK_SIZE;
}
if ( sc->soundChannels == 2 ) {
fdata[0] += samples[j&(SND_CHUNK_SIZE-1)];
fdata[1] += samples[(j+1)&(SND_CHUNK_SIZE-1)];
} else {
fdata[0] += samples[j&(SND_CHUNK_SIZE-1)];
fdata[1] += samples[j&(SND_CHUNK_SIZE-1)];
}
}
fdiv = 256 * (boff-aoff) / sc->soundChannels;
samp[i].left += (fdata[0] * fleftvol)/fdiv;
samp[i].right += (fdata[1] * frightvol)/fdiv;
}
}
}
static void S_PaintChannelFrom16( channel_t *ch, const sfx_t *sc, int count, int sampleOffset, int bufferOffset )
{
S_PaintChannelFrom16_scalar( ch, sc, count, sampleOffset, bufferOffset );
}
static void S_PaintChannelFromWavelet( channel_t *ch, sfx_t *sc, int count, int sampleOffset, int bufferOffset ) {
int data;
int leftvol, rightvol;
int i;
portable_samplepair_t *samp;
sndBuffer *chunk;
short *samples;
leftvol = ch->leftvol*snd_vol;
rightvol = ch->rightvol*snd_vol;
i = 0;
samp = &paintbuffer[ bufferOffset ];
chunk = sc->soundData;
while (sampleOffset>=(SND_CHUNK_SIZE_FLOAT*4)) {
chunk = chunk->next;
sampleOffset -= (SND_CHUNK_SIZE_FLOAT*4);
i++;
}
if (i!=sfxScratchIndex || sfxScratchPointer != sc) {
S_AdpcmGetSamples( chunk, sfxScratchBuffer );
sfxScratchIndex = i;
sfxScratchPointer = sc;
}
samples = sfxScratchBuffer;
for ( i=0 ; i<count ; i++ ) {
data = samples[sampleOffset++];
samp[i].left += (data * leftvol)>>8;
samp[i].right += (data * rightvol)>>8;
if (sampleOffset == SND_CHUNK_SIZE*2) {
chunk = chunk->next;
decodeWavelet(chunk, sfxScratchBuffer);
sfxScratchIndex++;
sampleOffset = 0;
}
}
}
static void S_PaintChannelFromADPCM( channel_t *ch, sfx_t *sc, int count, int sampleOffset, int bufferOffset ) {
int data;
int leftvol, rightvol;
int i;
portable_samplepair_t *samp;
sndBuffer *chunk;
short *samples;
leftvol = ch->leftvol*snd_vol;
rightvol = ch->rightvol*snd_vol;
i = 0;
samp = &paintbuffer[ bufferOffset ];
chunk = sc->soundData;
if (ch->doppler) {
sampleOffset = sampleOffset*ch->oldDopplerScale;
}
while (sampleOffset>=(SND_CHUNK_SIZE*4)) {
chunk = chunk->next;
sampleOffset -= (SND_CHUNK_SIZE*4);
i++;
}
if (i!=sfxScratchIndex || sfxScratchPointer != sc) {
S_AdpcmGetSamples( chunk, sfxScratchBuffer );
sfxScratchIndex = i;
sfxScratchPointer = sc;
}
samples = sfxScratchBuffer;
for ( i=0 ; i<count ; i++ ) {
data = samples[sampleOffset++];
samp[i].left += (data * leftvol)>>8;
samp[i].right += (data * rightvol)>>8;
if (sampleOffset == SND_CHUNK_SIZE*4) {
chunk = chunk->next;
S_AdpcmGetSamples( chunk, sfxScratchBuffer);
sampleOffset = 0;
sfxScratchIndex++;
}
}
}
static void S_PaintChannelFromMuLaw( channel_t *ch, sfx_t *sc, int count, int sampleOffset, int bufferOffset ) {
int data;
int leftvol, rightvol;
int i;
portable_samplepair_t *samp;
sndBuffer *chunk;
byte *samples;
float ooff;
leftvol = ch->leftvol*snd_vol;
rightvol = ch->rightvol*snd_vol;
samp = &paintbuffer[ bufferOffset ];
chunk = sc->soundData;
while (sampleOffset>=(SND_CHUNK_SIZE*2)) {
chunk = chunk->next;
sampleOffset -= (SND_CHUNK_SIZE*2);
if (!chunk) {
chunk = sc->soundData;
}
}
if (!ch->doppler) {
samples = (byte *)chunk->sndChunk + sampleOffset;
for ( i=0 ; i<count ; i++ ) {
data = mulawToShort[*samples];
samp[i].left += (data * leftvol)>>8;
samp[i].right += (data * rightvol)>>8;
samples++;
if ( chunk != NULL && samples == (byte *)chunk->sndChunk+(SND_CHUNK_SIZE*2)) {
chunk = chunk->next;
samples = (byte *)chunk->sndChunk;
}
}
} else {
ooff = sampleOffset;
samples = (byte *)chunk->sndChunk;
for ( i=0 ; i<count ; i++ ) {
data = mulawToShort[samples[(int)(ooff)]];
ooff = ooff + ch->dopplerScale;
samp[i].left += (data * leftvol)>>8;
samp[i].right += (data * rightvol)>>8;
if (ooff >= SND_CHUNK_SIZE*2) {
chunk = chunk->next;
if (!chunk) {
chunk = sc->soundData;
}
samples = (byte *)chunk->sndChunk;
ooff = 0.0;
}
}
}
}
/*
===================
S_PaintChannels
===================
*/
void S_PaintChannels( int endtime ) {
static qboolean muted = qfalse;
int i;
int end;
channel_t *ch;
sfx_t *sc;
int ltime, count;
int sampleOffset;
byte *buffer;
snd_vol = s_volume->value * 255;
if ( (!gw_active && !gw_minimized && s_muteWhenUnfocused->integer) || (gw_minimized && s_muteWhenMinimized->integer) ) {
buffer = dma_buffer2;
if ( !muted ) {
// switching to muted, clear hardware buffer
Com_Memset( dma.buffer, 0, dma.samples * dma.samplebits/8 );
}
muted = qtrue;
} else {
buffer = dma.buffer;
// switching to unmuted, clear both buffers
if ( muted ) {
Com_Memset( dma.buffer, 0, dma.samples * dma.samplebits/8 );
Com_Memset( dma_buffer2, 0, dma.samples * dma.samplebits/8 );
}
muted = qfalse;
}
//Com_Printf ("%i to %i\n", s_paintedtime, endtime);
while ( endtime - s_paintedtime > 0 ) {
// if paintbuffer is smaller than DMA buffer
// we may need to fill it multiple times
end = endtime;
if ( endtime - s_paintedtime > PAINTBUFFER_SIZE ) {
end = s_paintedtime + PAINTBUFFER_SIZE;
}
// clear the paint buffer and mix any raw samples...
Com_Memset( paintbuffer, 0, sizeof( paintbuffer ) );
if ( s_rawend - s_paintedtime >= 0 ) {
// copy from the streaming sound source
const int stop = (end < s_rawend) ? end : s_rawend;
for ( i = s_paintedtime; i < stop; i++ ) {
const int s = i&(MAX_RAW_SAMPLES-1);
paintbuffer[i-s_paintedtime].left += s_rawsamples[s].left;
paintbuffer[i-s_paintedtime].right += s_rawsamples[s].right;
}
}
// paint in the channels.
ch = s_channels;
for ( i = 0; i < MAX_CHANNELS ; i++, ch++ ) {
if ( !ch->thesfx || (!ch->leftvol && !ch->rightvol) ) {
continue;
}
ltime = s_paintedtime;
sc = ch->thesfx;
if ( sc->soundData == NULL || sc->soundLength == 0 ) {
continue;
}
sampleOffset = ltime - ch->startSample;
count = end - ltime;
if ( sampleOffset + count > sc->soundLength ) {
count = sc->soundLength - sampleOffset;
}
if ( count > 0 ) {
if( sc->soundCompressionMethod == 1) {
S_PaintChannelFromADPCM (ch, sc, count, sampleOffset, ltime - s_paintedtime);
} else if( sc->soundCompressionMethod == 2) {
S_PaintChannelFromWavelet (ch, sc, count, sampleOffset, ltime - s_paintedtime);
} else if( sc->soundCompressionMethod == 3) {
S_PaintChannelFromMuLaw (ch, sc, count, sampleOffset, ltime - s_paintedtime);
} else {
S_PaintChannelFrom16 (ch, sc, count, sampleOffset, ltime - s_paintedtime);
}
}
}
// paint in the looped channels.
ch = loop_channels;
for ( i = 0; i < numLoopChannels ; i++, ch++ ) {
if ( !ch->thesfx || (!ch->leftvol && !ch->rightvol )) {
continue;
}
ltime = s_paintedtime;
sc = ch->thesfx;
if (sc->soundData==NULL || sc->soundLength==0) {
continue;
}
// we might have to make two passes if it
// is a looping sound effect and the end of
// the sample is hit
do {
sampleOffset = (ltime % sc->soundLength);
count = end - ltime;
if ( sampleOffset + count > sc->soundLength ) {
count = sc->soundLength - sampleOffset;
}
if ( count > 0 ) {
if( sc->soundCompressionMethod == 1) {
S_PaintChannelFromADPCM (ch, sc, count, sampleOffset, ltime - s_paintedtime);
} else if( sc->soundCompressionMethod == 2) {
S_PaintChannelFromWavelet (ch, sc, count, sampleOffset, ltime - s_paintedtime);
} else if( sc->soundCompressionMethod == 3) {
S_PaintChannelFromMuLaw (ch, sc, count, sampleOffset, ltime - s_paintedtime);
} else {
S_PaintChannelFrom16 (ch, sc, count, sampleOffset, ltime - s_paintedtime);
}
ltime += count;
}
} while ( ltime - end < 0 );
}
// transfer out according to DMA format
S_TransferPaintBuffer( end, buffer );
s_paintedtime = end;
}
}
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