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fastmix.cpp
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2390 lines (2152 loc) · 65.9 KB
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/*
* This source code is public domain.
*
* Authors: Olivier Lapicque <[email protected]>
* Markus Fick <[email protected]> spline + fir-resampler
*/
#include "stdafx.h"
#include "sndfile.h"
#include <math.h>
#if defined(_MSC_VER) && defined(_M_IX86)
#pragma bss_seg(".modplug")
#endif
// Front Mix Buffer (Also room for interleaved rear mix)
int MixSoundBuffer[MIXBUFFERSIZE*4];
// Reverb Mix Buffer
#ifndef MODPLUG_NO_REVERB
int MixReverbBuffer[MIXBUFFERSIZE*2];
extern UINT gnReverbSend;
#endif
#ifndef MODPLUG_FASTSOUNDLIB
int MixRearBuffer[MIXBUFFERSIZE*2];
float MixFloatBuffer[MIXBUFFERSIZE*2];
#endif
#if defined(_MSC_VER) && defined(_M_IX86)
#pragma bss_seg()
#endif
extern LONG gnDryROfsVol;
extern LONG gnDryLOfsVol;
extern LONG gnRvbROfsVol;
extern LONG gnRvbLOfsVol;
// 4x256 taps polyphase FIR resampling filter
extern short int gFastSinc[];
extern short int gKaiserSinc[]; // 8-taps polyphase
/*
*-----------------------------------------------------------------------------
cubic spline interpolation doc,
(derived from "digital image warping", g. wolberg)
interpolation polynomial: f(x) = A3*(x-floor(x))**3 + A2*(x-floor(x))**2 +
A1*(x-floor(x)) + A0
with Y = equispaced data points (dist=1), YD = first derivates of data points and IP = floor(x)
the A[0..3] can be found by solving
A0 = Y[IP]
A1 = YD[IP]
A2 = 3*(Y[IP+1]-Y[IP])-2.0*YD[IP]-YD[IP+1]
A3 = -2.0 * (Y[IP+1]-Y[IP]) + YD[IP] - YD[IP+1]
with the first derivates as
YD[IP] = 0.5 * (Y[IP+1] - Y[IP-1]);
YD[IP+1] = 0.5 * (Y[IP+2] - Y[IP])
the coefs becomes
A0 = Y[IP]
A1 = YD[IP]
= 0.5*(Y[IP+1] - Y[IP-1]);
A2 = 3.0*(Y[IP+1]-Y[IP])-2.0*YD[IP]-YD[IP+1]
= 3.0*(Y[IP+1]-Y[IP]) - 0.5*2.0*(Y[IP+1]-Y[IP-1]) - 0.5*(Y[IP+2]-Y[IP])
= 3.0*Y[IP+1] - 3.0*Y[IP] - Y[IP+1] + Y[IP-1] - 0.5*Y[IP+2] + 0.5*Y[IP]
= -0.5*Y[IP+2] + 2.0 * Y[IP+1] - 2.5*Y[IP] + Y[IP-1]
= Y[IP-1] + 2 * Y[IP+1] - 0.5 * (5.0 * Y[IP] + Y[IP+2])
A3 = -2.0*(Y[IP+1]-Y[IP]) + YD[IP] + YD[IP+1]
= -2.0*Y[IP+1] + 2.0*Y[IP] + 0.5*(Y[IP+1]-Y[IP-1]) + 0.5*(Y[IP+2]-Y[IP])
= -2.0*Y[IP+1] + 2.0*Y[IP] + 0.5*Y[IP+1] - 0.5*Y[IP-1] + 0.5*Y[IP+2] - 0.5*Y[IP]
= 0.5 * Y[IP+2] - 1.5 * Y[IP+1] + 1.5 * Y[IP] - 0.5 * Y[IP-1]
= 0.5 * (3.0 * (Y[IP] - Y[IP+1]) - Y[IP-1] + YP[IP+2])
then interpolated data value is (horner rule)
out = (((A3*x)+A2)*x+A1)*x+A0
this gives parts of data points Y[IP-1] to Y[IP+2] of
part x**3 x**2 x**1 x**0
Y[IP-1] -0.5 1 -0.5 0
Y[IP] 1.5 -2.5 0 1
Y[IP+1] -1.5 2 0.5 0
Y[IP+2] 0.5 -0.5 0 0
*---------------------------------------------------------------------------
*/
// number of bits used to scale spline coefs
#define SPLINE_QUANTBITS 14
#define SPLINE_QUANTSCALE (1L<<SPLINE_QUANTBITS)
#define SPLINE_8SHIFT (SPLINE_QUANTBITS-8)
#define SPLINE_16SHIFT (SPLINE_QUANTBITS)
// forces coefsset to unity gain
#define SPLINE_CLAMPFORUNITY
// log2(number) of precalculated splines (range is [4..14])
#define SPLINE_FRACBITS 10
#define SPLINE_LUTLEN (1L<<SPLINE_FRACBITS)
class CzCUBICSPLINE
{ public:
CzCUBICSPLINE( );
~CzCUBICSPLINE( );
static signed short lut[4*(1L<<SPLINE_FRACBITS)];
};
signed short CzCUBICSPLINE::lut[4*(1L<<SPLINE_FRACBITS)];
CzCUBICSPLINE::CzCUBICSPLINE( )
{ int _LIi;
int _LLen = (1L<<SPLINE_FRACBITS);
float _LFlen = 1.0f / (float)_LLen;
float _LScale = (float)SPLINE_QUANTSCALE;
for(_LIi=0;_LIi<_LLen;_LIi++)
{ float _LCm1, _LC0, _LC1, _LC2;
float _LX = ((float)_LIi)*_LFlen;
int _LSum,_LIdx = _LIi<<2;
_LCm1 = (float)floor( 0.5 + _LScale*(-0.5*_LX*_LX*_LX + 1.0*_LX*_LX - 0.5*_LX ) );
_LC0 = (float)floor( 0.5 + _LScale*( 1.5*_LX*_LX*_LX - 2.5*_LX*_LX + 1.0 ) );
_LC1 = (float)floor( 0.5 + _LScale*(-1.5*_LX*_LX*_LX + 2.0*_LX*_LX + 0.5*_LX ) );
_LC2 = (float)floor( 0.5 + _LScale*( 0.5*_LX*_LX*_LX - 0.5*_LX*_LX) );
lut[_LIdx+0] = (signed short)( (_LCm1 < -_LScale) ? -_LScale : ((_LCm1 > _LScale) ? _LScale : _LCm1) );
lut[_LIdx+1] = (signed short)( (_LC0 < -_LScale) ? -_LScale : ((_LC0 > _LScale) ? _LScale : _LC0 ) );
lut[_LIdx+2] = (signed short)( (_LC1 < -_LScale) ? -_LScale : ((_LC1 > _LScale) ? _LScale : _LC1 ) );
lut[_LIdx+3] = (signed short)( (_LC2 < -_LScale) ? -_LScale : ((_LC2 > _LScale) ? _LScale : _LC2 ) );
#ifdef SPLINE_CLAMPFORUNITY
_LSum = lut[_LIdx+0]+lut[_LIdx+1]+lut[_LIdx+2]+lut[_LIdx+3];
if( _LSum != SPLINE_QUANTSCALE )
{ int _LMax = _LIdx;
if( lut[_LIdx+1]>lut[_LMax] ) _LMax = _LIdx+1;
if( lut[_LIdx+2]>lut[_LMax] ) _LMax = _LIdx+2;
if( lut[_LIdx+3]>lut[_LMax] ) _LMax = _LIdx+3;
lut[_LMax] += ((signed short)SPLINE_QUANTSCALE-_LSum);
}
#endif
}
}
CzCUBICSPLINE::~CzCUBICSPLINE( )
{ // nothing todo
}
CzCUBICSPLINE sspline;
/*
------------------------------------------------------------------------------
fir interpolation doc,
(derived from "an engineer's guide to fir digital filters", n.j. loy)
calculate coefficients for ideal lowpass filter (with cutoff = fc in
0..1 (mapped to 0..nyquist))
c[-N..N] = (i==0) ? fc : sin(fc*pi*i)/(pi*i)
then apply selected window to coefficients
c[-N..N] *= w(0..N)
with n in 2*N and w(n) being a window function (see loy)
then calculate gain and scale filter coefs to have unity gain.
------------------------------------------------------------------------------
*/
// quantizer scale of window coefs
#define WFIR_QUANTBITS 15
#define WFIR_QUANTSCALE (1L<<WFIR_QUANTBITS)
#define WFIR_8SHIFT (WFIR_QUANTBITS-8)
#define WFIR_16BITSHIFT (WFIR_QUANTBITS)
// log2(number)-1 of precalculated taps range is [4..12]
#define WFIR_FRACBITS 10
#define WFIR_LUTLEN ((1L<<(WFIR_FRACBITS+1))+1)
// number of samples in window
#define WFIR_LOG2WIDTH 3
#define WFIR_WIDTH (1L<<WFIR_LOG2WIDTH)
#define WFIR_SMPSPERWING ((WFIR_WIDTH-1)>>1)
// cutoff (1.0 == pi/2)
#define WFIR_CUTOFF 0.90f
// wfir type
#define WFIR_HANN 0
#define WFIR_HAMMING 1
#define WFIR_BLACKMANEXACT 2
#define WFIR_BLACKMAN3T61 3
#define WFIR_BLACKMAN3T67 4
#define WFIR_BLACKMAN4T92 5
#define WFIR_BLACKMAN4T74 6
#define WFIR_KAISER4T 7
#define WFIR_TYPE WFIR_BLACKMANEXACT
// wfir help
#ifndef M_zPI
#define M_zPI 3.1415926535897932384626433832795
#endif
#define M_zEPS 1e-8
#define M_zBESSELEPS 1e-21
class CzWINDOWEDFIR
{
public:
CzWINDOWEDFIR( );
~CzWINDOWEDFIR( );
float coef( int _PCnr, float _POfs, float _PCut, int _PWidth, int _PType )
//OLD args to coef: float _PPos, float _PFc, int _PLen )
{
double _LWidthM1 = _PWidth-1;
double _LWidthM1Half = 0.5*_LWidthM1;
double _LPosU = ((double)_PCnr - _POfs);
double _LPos = _LPosU-_LWidthM1Half;
double _LPIdl = 2.0*M_zPI/_LWidthM1;
double _LWc,_LSi;
if( fabs(_LPos)<M_zEPS ) {
_LWc = 1.0;
_LSi = _PCut;
} else {
switch( _PType )
{
case WFIR_HANN:
_LWc = 0.50 - 0.50 * cos(_LPIdl*_LPosU);
break;
case WFIR_HAMMING:
_LWc = 0.54 - 0.46 * cos(_LPIdl*_LPosU);
break;
case WFIR_BLACKMANEXACT:
_LWc = 0.42 - 0.50 * cos(_LPIdl*_LPosU) +
0.08 * cos(2.0*_LPIdl*_LPosU);
break;
case WFIR_BLACKMAN3T61:
_LWc = 0.44959 - 0.49364 * cos(_LPIdl*_LPosU) +
0.05677 * cos(2.0*_LPIdl*_LPosU);
break;
case WFIR_BLACKMAN3T67:
_LWc = 0.42323 - 0.49755 * cos(_LPIdl*_LPosU) +
0.07922 * cos(2.0*_LPIdl*_LPosU);
break;
case WFIR_BLACKMAN4T92:
_LWc = 0.35875 - 0.48829 * cos(_LPIdl*_LPosU) +
0.14128 * cos(2.0*_LPIdl*_LPosU) -
0.01168 * cos(3.0*_LPIdl*_LPosU);
break;
case WFIR_BLACKMAN4T74:
_LWc = 0.40217 - 0.49703 * cos(_LPIdl*_LPosU) +
0.09392 * cos(2.0*_LPIdl*_LPosU) -
0.00183 * cos(3.0*_LPIdl*_LPosU);
break;
case WFIR_KAISER4T:
_LWc = 0.40243 - 0.49804 * cos(_LPIdl*_LPosU) +
0.09831 * cos(2.0*_LPIdl*_LPosU) -
0.00122 * cos(3.0*_LPIdl*_LPosU);
break;
default:
_LWc = 1.0;
break;
}
_LPos *= M_zPI;
_LSi = sin(_PCut*_LPos)/_LPos;
}
return (float)(_LWc*_LSi);
}
static signed short lut[WFIR_LUTLEN*WFIR_WIDTH];
};
signed short CzWINDOWEDFIR::lut[WFIR_LUTLEN*WFIR_WIDTH];
CzWINDOWEDFIR::CzWINDOWEDFIR()
{
int _LPcl;
float _LPcllen = (float)(1L<<WFIR_FRACBITS); // number of precalculated lines for 0..1 (-1..0)
float _LNorm = 1.0f / (float)(2.0f * _LPcllen);
float _LCut = WFIR_CUTOFF;
float _LScale = (float)WFIR_QUANTSCALE;
for( _LPcl=0;_LPcl<WFIR_LUTLEN;_LPcl++ )
{
float _LGain,_LCoefs[WFIR_WIDTH];
float _LOfs = ((float)_LPcl-_LPcllen)*_LNorm;
int _LCc,_LIdx = _LPcl<<WFIR_LOG2WIDTH;
for( _LCc=0,_LGain=0.0f;_LCc<WFIR_WIDTH;_LCc++ )
{ _LGain += (_LCoefs[_LCc] = coef( _LCc, _LOfs, _LCut, WFIR_WIDTH, WFIR_TYPE ));
}
_LGain = 1.0f/_LGain;
for( _LCc=0;_LCc<WFIR_WIDTH;_LCc++ )
{ float _LCoef = (float)floor( 0.5 + _LScale*_LCoefs[_LCc]*_LGain );
lut[_LIdx+_LCc] = (signed short)( (_LCoef<-_LScale)?-_LScale:((_LCoef>_LScale)?_LScale:_LCoef) );
}
}
}
CzWINDOWEDFIR::~CzWINDOWEDFIR()
{ // nothing todo
}
CzWINDOWEDFIR sfir;
// ----------------------------------------------------------------------------
// MIXING MACROS
// ----------------------------------------------------------------------------
#if defined(__cplusplus) && (__cplusplus >= 201402L)
#define REGISTER
#else
#define REGISTER register
#endif
#define SNDMIX_BEGINSAMPLELOOP8\
REGISTER MODCHANNEL * const pChn = pChannel;\
nPos = pChn->nPosLo;\
const signed char *p = (signed char *)(pChn->pCurrentSample+pChn->nPos);\
if (pChn->dwFlags & CHN_STEREO) p += pChn->nPos;\
int *pvol = pbuffer;\
do {
#define SNDMIX_BEGINSAMPLELOOP16\
REGISTER MODCHANNEL * const pChn = pChannel;\
nPos = pChn->nPosLo;\
const signed short *p = (signed short *)(pChn->pCurrentSample+(pChn->nPos*2));\
if (pChn->dwFlags & CHN_STEREO) p += pChn->nPos;\
int *pvol = pbuffer;\
do {
#define SNDMIX_ENDSAMPLELOOP\
nPos += pChn->nInc;\
} while (pvol < pbufmax);\
pChn->nPos += nPos >> 16;\
pChn->nPosLo = nPos & 0xFFFF;
#define SNDMIX_ENDSAMPLELOOP8 SNDMIX_ENDSAMPLELOOP
#define SNDMIX_ENDSAMPLELOOP16 SNDMIX_ENDSAMPLELOOP
//////////////////////////////////////////////////////////////////////////////
// Mono
// No interpolation
#define SNDMIX_GETMONOVOL8NOIDO\
int vol = p[nPos >> 16] << 8;
#define SNDMIX_GETMONOVOL16NOIDO\
int vol = p[nPos >> 16];
// Linear Interpolation
#define SNDMIX_GETMONOVOL8LINEAR\
int poshi = nPos >> 16;\
int poslo = (nPos >> 8) & 0xFF;\
int srcvol = p[poshi];\
int destvol = p[poshi+1];\
int vol = (srcvol<<8) + ((int)(poslo * (destvol - srcvol)));
#define SNDMIX_GETMONOVOL16LINEAR\
int poshi = nPos >> 16;\
int poslo = (nPos >> 8) & 0xFF;\
int srcvol = p[poshi];\
int destvol = p[poshi+1];\
int vol = srcvol + ((int)(poslo * (destvol - srcvol)) >> 8);
// spline interpolation (2 guard bits should be enough???)
#define SPLINE_FRACSHIFT ((16-SPLINE_FRACBITS)-2)
#define SPLINE_FRACMASK (((1L<<(16-SPLINE_FRACSHIFT))-1)&~3)
#define SNDMIX_GETMONOVOL8SPLINE \
int poshi = nPos >> 16; \
int poslo = (nPos >> SPLINE_FRACSHIFT) & SPLINE_FRACMASK; \
int vol = (CzCUBICSPLINE::lut[poslo ]*(int)p[poshi-1] + \
CzCUBICSPLINE::lut[poslo+1]*(int)p[poshi ] + \
CzCUBICSPLINE::lut[poslo+3]*(int)p[poshi+2] + \
CzCUBICSPLINE::lut[poslo+2]*(int)p[poshi+1]) >> SPLINE_8SHIFT;
#define SNDMIX_GETMONOVOL16SPLINE \
int poshi = nPos >> 16; \
int poslo = (nPos >> SPLINE_FRACSHIFT) & SPLINE_FRACMASK; \
int vol = (CzCUBICSPLINE::lut[poslo ]*(int)p[poshi-1] + \
CzCUBICSPLINE::lut[poslo+1]*(int)p[poshi ] + \
CzCUBICSPLINE::lut[poslo+3]*(int)p[poshi+2] + \
CzCUBICSPLINE::lut[poslo+2]*(int)p[poshi+1]) >> SPLINE_16SHIFT;
// fir interpolation
#define WFIR_FRACSHIFT (16-(WFIR_FRACBITS+1+WFIR_LOG2WIDTH))
#define WFIR_FRACMASK ((((1L<<(17-WFIR_FRACSHIFT))-1)&~((1L<<WFIR_LOG2WIDTH)-1)))
#define WFIR_FRACHALVE (1L<<(16-(WFIR_FRACBITS+2)))
#define SNDMIX_GETMONOVOL8FIRFILTER \
int poshi = nPos >> 16;\
int poslo = (nPos & 0xFFFF);\
int firidx = ((poslo+WFIR_FRACHALVE)>>WFIR_FRACSHIFT) & WFIR_FRACMASK; \
int vol = (CzWINDOWEDFIR::lut[firidx+0]*(int)p[poshi+1-4]); \
vol += (CzWINDOWEDFIR::lut[firidx+1]*(int)p[poshi+2-4]); \
vol += (CzWINDOWEDFIR::lut[firidx+2]*(int)p[poshi+3-4]); \
vol += (CzWINDOWEDFIR::lut[firidx+3]*(int)p[poshi+4-4]); \
vol += (CzWINDOWEDFIR::lut[firidx+4]*(int)p[poshi+5-4]); \
vol += (CzWINDOWEDFIR::lut[firidx+5]*(int)p[poshi+6-4]); \
vol += (CzWINDOWEDFIR::lut[firidx+6]*(int)p[poshi+7-4]); \
vol += (CzWINDOWEDFIR::lut[firidx+7]*(int)p[poshi+8-4]); \
vol >>= WFIR_8SHIFT;
#define SNDMIX_GETMONOVOL16FIRFILTER \
int poshi = nPos >> 16;\
int poslo = (nPos & 0xFFFF);\
int firidx = ((poslo+WFIR_FRACHALVE)>>WFIR_FRACSHIFT) & WFIR_FRACMASK; \
int vol1 = (CzWINDOWEDFIR::lut[firidx+0]*(int)p[poshi+1-4]); \
vol1 += (CzWINDOWEDFIR::lut[firidx+1]*(int)p[poshi+2-4]); \
vol1 += (CzWINDOWEDFIR::lut[firidx+2]*(int)p[poshi+3-4]); \
vol1 += (CzWINDOWEDFIR::lut[firidx+3]*(int)p[poshi+4-4]); \
int vol2 = (CzWINDOWEDFIR::lut[firidx+4]*(int)p[poshi+5-4]); \
vol2 += (CzWINDOWEDFIR::lut[firidx+5]*(int)p[poshi+6-4]); \
vol2 += (CzWINDOWEDFIR::lut[firidx+6]*(int)p[poshi+7-4]); \
vol2 += (CzWINDOWEDFIR::lut[firidx+7]*(int)p[poshi+8-4]); \
int vol = ((vol1>>1)+(vol2>>1)) >> (WFIR_16BITSHIFT-1);
/////////////////////////////////////////////////////////////////////////////
// Stereo
// No interpolation
#define SNDMIX_GETSTEREOVOL8NOIDO\
int vol_l = p[(nPos>>16)*2] << 8;\
int vol_r = p[(nPos>>16)*2+1] << 8;
#define SNDMIX_GETSTEREOVOL16NOIDO\
int vol_l = p[(nPos>>16)*2];\
int vol_r = p[(nPos>>16)*2+1];
// Linear Interpolation
#define SNDMIX_GETSTEREOVOL8LINEAR\
int poshi = nPos >> 16;\
int poslo = (nPos >> 8) & 0xFF;\
int srcvol_l = p[poshi*2];\
int vol_l = (srcvol_l<<8) + ((int)(poslo * (p[poshi*2+2] - srcvol_l)));\
int srcvol_r = p[poshi*2+1];\
int vol_r = (srcvol_r<<8) + ((int)(poslo * (p[poshi*2+3] - srcvol_r)));
#define SNDMIX_GETSTEREOVOL16LINEAR\
int poshi = nPos >> 16;\
int poslo = (nPos >> 8) & 0xFF;\
int srcvol_l = p[poshi*2];\
int vol_l = srcvol_l + ((int)(poslo * (p[poshi*2+2] - srcvol_l)) >> 8);\
int srcvol_r = p[poshi*2+1];\
int vol_r = srcvol_r + ((int)(poslo * (p[poshi*2+3] - srcvol_r)) >> 8);\
// Spline Interpolation
#define SNDMIX_GETSTEREOVOL8SPLINE \
int poshi = nPos >> 16; \
int poslo = (nPos >> SPLINE_FRACSHIFT) & SPLINE_FRACMASK; \
int vol_l = (CzCUBICSPLINE::lut[poslo ]*(int)p[(poshi-1)*2 ] + \
CzCUBICSPLINE::lut[poslo+1]*(int)p[(poshi )*2 ] + \
CzCUBICSPLINE::lut[poslo+2]*(int)p[(poshi+1)*2 ] + \
CzCUBICSPLINE::lut[poslo+3]*(int)p[(poshi+2)*2 ]) >> SPLINE_8SHIFT; \
int vol_r = (CzCUBICSPLINE::lut[poslo ]*(int)p[(poshi-1)*2+1] + \
CzCUBICSPLINE::lut[poslo+1]*(int)p[(poshi )*2+1] + \
CzCUBICSPLINE::lut[poslo+2]*(int)p[(poshi+1)*2+1] + \
CzCUBICSPLINE::lut[poslo+3]*(int)p[(poshi+2)*2+1]) >> SPLINE_8SHIFT;
#define SNDMIX_GETSTEREOVOL16SPLINE \
int poshi = nPos >> 16; \
int poslo = (nPos >> SPLINE_FRACSHIFT) & SPLINE_FRACMASK; \
int vol_l = (CzCUBICSPLINE::lut[poslo ]*(int)p[(poshi-1)*2 ] + \
CzCUBICSPLINE::lut[poslo+1]*(int)p[(poshi )*2 ] + \
CzCUBICSPLINE::lut[poslo+2]*(int)p[(poshi+1)*2 ] + \
CzCUBICSPLINE::lut[poslo+3]*(int)p[(poshi+2)*2 ]) >> SPLINE_16SHIFT; \
int vol_r = (CzCUBICSPLINE::lut[poslo ]*(int)p[(poshi-1)*2+1] + \
CzCUBICSPLINE::lut[poslo+1]*(int)p[(poshi )*2+1] + \
CzCUBICSPLINE::lut[poslo+2]*(int)p[(poshi+1)*2+1] + \
CzCUBICSPLINE::lut[poslo+3]*(int)p[(poshi+2)*2+1]) >> SPLINE_16SHIFT;
// fir interpolation
#define SNDMIX_GETSTEREOVOL8FIRFILTER \
int poshi = nPos >> 16;\
int poslo = (nPos & 0xFFFF);\
int firidx = ((poslo+WFIR_FRACHALVE)>>WFIR_FRACSHIFT) & WFIR_FRACMASK; \
int vol_l = (CzWINDOWEDFIR::lut[firidx+0]*(int)p[(poshi+1-4)*2 ]); \
vol_l += (CzWINDOWEDFIR::lut[firidx+1]*(int)p[(poshi+2-4)*2 ]); \
vol_l += (CzWINDOWEDFIR::lut[firidx+2]*(int)p[(poshi+3-4)*2 ]); \
vol_l += (CzWINDOWEDFIR::lut[firidx+3]*(int)p[(poshi+4-4)*2 ]); \
vol_l += (CzWINDOWEDFIR::lut[firidx+4]*(int)p[(poshi+5-4)*2 ]); \
vol_l += (CzWINDOWEDFIR::lut[firidx+5]*(int)p[(poshi+6-4)*2 ]); \
vol_l += (CzWINDOWEDFIR::lut[firidx+6]*(int)p[(poshi+7-4)*2 ]); \
vol_l += (CzWINDOWEDFIR::lut[firidx+7]*(int)p[(poshi+8-4)*2 ]); \
vol_l >>= WFIR_8SHIFT; \
int vol_r = (CzWINDOWEDFIR::lut[firidx+0]*(int)p[(poshi+1-4)*2+1]); \
vol_r += (CzWINDOWEDFIR::lut[firidx+1]*(int)p[(poshi+2-4)*2+1]); \
vol_r += (CzWINDOWEDFIR::lut[firidx+2]*(int)p[(poshi+3-4)*2+1]); \
vol_r += (CzWINDOWEDFIR::lut[firidx+3]*(int)p[(poshi+4-4)*2+1]); \
vol_r += (CzWINDOWEDFIR::lut[firidx+4]*(int)p[(poshi+5-4)*2+1]); \
vol_r += (CzWINDOWEDFIR::lut[firidx+5]*(int)p[(poshi+6-4)*2+1]); \
vol_r += (CzWINDOWEDFIR::lut[firidx+6]*(int)p[(poshi+7-4)*2+1]); \
vol_r += (CzWINDOWEDFIR::lut[firidx+7]*(int)p[(poshi+8-4)*2+1]); \
vol_r >>= WFIR_8SHIFT;
#define SNDMIX_GETSTEREOVOL16FIRFILTER \
int poshi = nPos >> 16;\
int poslo = (nPos & 0xFFFF);\
int firidx = ((poslo+WFIR_FRACHALVE)>>WFIR_FRACSHIFT) & WFIR_FRACMASK; \
int vol1_l = (CzWINDOWEDFIR::lut[firidx+0]*(int)p[(poshi+1-4)*2 ]); \
vol1_l += (CzWINDOWEDFIR::lut[firidx+1]*(int)p[(poshi+2-4)*2 ]); \
vol1_l += (CzWINDOWEDFIR::lut[firidx+2]*(int)p[(poshi+3-4)*2 ]); \
vol1_l += (CzWINDOWEDFIR::lut[firidx+3]*(int)p[(poshi+4-4)*2 ]); \
int vol2_l = (CzWINDOWEDFIR::lut[firidx+4]*(int)p[(poshi+5-4)*2 ]); \
vol2_l += (CzWINDOWEDFIR::lut[firidx+5]*(int)p[(poshi+6-4)*2 ]); \
vol2_l += (CzWINDOWEDFIR::lut[firidx+6]*(int)p[(poshi+7-4)*2 ]); \
vol2_l += (CzWINDOWEDFIR::lut[firidx+7]*(int)p[(poshi+8-4)*2 ]); \
int vol_l = ((vol1_l>>1)+(vol2_l>>1)) >> (WFIR_16BITSHIFT-1); \
int vol1_r = (CzWINDOWEDFIR::lut[firidx+0]*(int)p[(poshi+1-4)*2+1]); \
vol1_r += (CzWINDOWEDFIR::lut[firidx+1]*(int)p[(poshi+2-4)*2+1]); \
vol1_r += (CzWINDOWEDFIR::lut[firidx+2]*(int)p[(poshi+3-4)*2+1]); \
vol1_r += (CzWINDOWEDFIR::lut[firidx+3]*(int)p[(poshi+4-4)*2+1]); \
int vol2_r = (CzWINDOWEDFIR::lut[firidx+4]*(int)p[(poshi+5-4)*2+1]); \
vol2_r += (CzWINDOWEDFIR::lut[firidx+5]*(int)p[(poshi+6-4)*2+1]); \
vol2_r += (CzWINDOWEDFIR::lut[firidx+6]*(int)p[(poshi+7-4)*2+1]); \
vol2_r += (CzWINDOWEDFIR::lut[firidx+7]*(int)p[(poshi+8-4)*2+1]); \
int vol_r = ((vol1_r>>1)+(vol2_r>>1)) >> (WFIR_16BITSHIFT-1);
/////////////////////////////////////////////////////////////////////////////
#define SNDMIX_STOREMONOVOL\
pvol[0] += vol * pChn->nRightVol;\
pvol[1] += vol * pChn->nLeftVol;\
pvol += 2;
#define SNDMIX_STORESTEREOVOL\
pvol[0] += vol_l * pChn->nRightVol;\
pvol[1] += vol_r * pChn->nLeftVol;\
pvol += 2;
#define SNDMIX_STOREFASTMONOVOL\
int v = vol * pChn->nRightVol;\
pvol[0] += v;\
pvol[1] += v;\
pvol += 2;
#define SNDMIX_RAMPMONOVOL\
nRampLeftVol += pChn->nLeftRamp;\
nRampRightVol += pChn->nRightRamp;\
pvol[0] += vol * (nRampRightVol >> VOLUMERAMPPRECISION);\
pvol[1] += vol * (nRampLeftVol >> VOLUMERAMPPRECISION);\
pvol += 2;
#define SNDMIX_RAMPFASTMONOVOL\
nRampRightVol += pChn->nRightRamp;\
int fastvol = vol * (nRampRightVol >> VOLUMERAMPPRECISION);\
pvol[0] += fastvol;\
pvol[1] += fastvol;\
pvol += 2;
#define SNDMIX_RAMPSTEREOVOL\
nRampLeftVol += pChn->nLeftRamp;\
nRampRightVol += pChn->nRightRamp;\
pvol[0] += vol_l * (nRampRightVol >> VOLUMERAMPPRECISION);\
pvol[1] += vol_r * (nRampLeftVol >> VOLUMERAMPPRECISION);\
pvol += 2;
///////////////////////////////////////////////////
// Resonant Filters
// Mono
#define MIX_BEGIN_FILTER\
int fy1 = pChannel->nFilter_Y1;\
int fy2 = pChannel->nFilter_Y2;\
#define MIX_END_FILTER\
pChannel->nFilter_Y1 = fy1;\
pChannel->nFilter_Y2 = fy2;
#define SNDMIX_PROCESSFILTER\
vol = (vol * pChn->nFilter_A0 + fy1 * pChn->nFilter_B0 + fy2 * pChn->nFilter_B1 + 4096) >> 13;\
fy2 = fy1;\
fy1 = vol;\
// Stereo
#define MIX_BEGIN_STEREO_FILTER\
int fy1 = pChannel->nFilter_Y1;\
int fy2 = pChannel->nFilter_Y2;\
int fy3 = pChannel->nFilter_Y3;\
int fy4 = pChannel->nFilter_Y4;\
#define MIX_END_STEREO_FILTER\
pChannel->nFilter_Y1 = fy1;\
pChannel->nFilter_Y2 = fy2;\
pChannel->nFilter_Y3 = fy3;\
pChannel->nFilter_Y4 = fy4;\
#define SNDMIX_PROCESSSTEREOFILTER\
vol_l = (vol_l * pChn->nFilter_A0 + fy1 * pChn->nFilter_B0 + fy2 * pChn->nFilter_B1 + 4096) >> 13;\
vol_r = (vol_r * pChn->nFilter_A0 + fy3 * pChn->nFilter_B0 + fy4 * pChn->nFilter_B1 + 4096) >> 13;\
fy2 = fy1; fy1 = vol_l;\
fy4 = fy3; fy3 = vol_r;\
//////////////////////////////////////////////////////////
// Interfaces
typedef VOID (MPPASMCALL * LPMIXINTERFACE)(MODCHANNEL *, int *, int *);
#define BEGIN_MIX_INTERFACE(func)\
VOID MPPASMCALL func(MODCHANNEL *pChannel, int *pbuffer, int *pbufmax)\
{\
LONG nPos;
#define END_MIX_INTERFACE()\
SNDMIX_ENDSAMPLELOOP\
}
// Volume Ramps
#define BEGIN_RAMPMIX_INTERFACE(func)\
BEGIN_MIX_INTERFACE(func)\
LONG nRampRightVol = pChannel->nRampRightVol;\
LONG nRampLeftVol = pChannel->nRampLeftVol;
#define END_RAMPMIX_INTERFACE()\
SNDMIX_ENDSAMPLELOOP\
pChannel->nRampRightVol = nRampRightVol;\
pChannel->nRightVol = nRampRightVol >> VOLUMERAMPPRECISION;\
pChannel->nRampLeftVol = nRampLeftVol;\
pChannel->nLeftVol = nRampLeftVol >> VOLUMERAMPPRECISION;\
}
#define BEGIN_FASTRAMPMIX_INTERFACE(func)\
BEGIN_MIX_INTERFACE(func)\
LONG nRampRightVol = pChannel->nRampRightVol;
#define END_FASTRAMPMIX_INTERFACE()\
SNDMIX_ENDSAMPLELOOP\
pChannel->nRampRightVol = nRampRightVol;\
pChannel->nRampLeftVol = nRampRightVol;\
pChannel->nRightVol = nRampRightVol >> VOLUMERAMPPRECISION;\
pChannel->nLeftVol = pChannel->nRightVol;\
}
// Mono Resonant Filters
#define BEGIN_MIX_FLT_INTERFACE(func)\
BEGIN_MIX_INTERFACE(func)\
MIX_BEGIN_FILTER
#define END_MIX_FLT_INTERFACE()\
SNDMIX_ENDSAMPLELOOP\
MIX_END_FILTER\
}
#define BEGIN_RAMPMIX_FLT_INTERFACE(func)\
BEGIN_MIX_INTERFACE(func)\
LONG nRampRightVol = pChannel->nRampRightVol;\
LONG nRampLeftVol = pChannel->nRampLeftVol;\
MIX_BEGIN_FILTER
#define END_RAMPMIX_FLT_INTERFACE()\
SNDMIX_ENDSAMPLELOOP\
MIX_END_FILTER\
pChannel->nRampRightVol = nRampRightVol;\
pChannel->nRightVol = nRampRightVol >> VOLUMERAMPPRECISION;\
pChannel->nRampLeftVol = nRampLeftVol;\
pChannel->nLeftVol = nRampLeftVol >> VOLUMERAMPPRECISION;\
}
// Stereo Resonant Filters
#define BEGIN_MIX_STFLT_INTERFACE(func)\
BEGIN_MIX_INTERFACE(func)\
MIX_BEGIN_STEREO_FILTER
#define END_MIX_STFLT_INTERFACE()\
SNDMIX_ENDSAMPLELOOP\
MIX_END_STEREO_FILTER\
}
#define BEGIN_RAMPMIX_STFLT_INTERFACE(func)\
BEGIN_MIX_INTERFACE(func)\
LONG nRampRightVol = pChannel->nRampRightVol;\
LONG nRampLeftVol = pChannel->nRampLeftVol;\
MIX_BEGIN_STEREO_FILTER
#define END_RAMPMIX_STFLT_INTERFACE()\
SNDMIX_ENDSAMPLELOOP\
MIX_END_STEREO_FILTER\
pChannel->nRampRightVol = nRampRightVol;\
pChannel->nRightVol = nRampRightVol >> VOLUMERAMPPRECISION;\
pChannel->nRampLeftVol = nRampLeftVol;\
pChannel->nLeftVol = nRampLeftVol >> VOLUMERAMPPRECISION;\
}
/////////////////////////////////////////////////////
//
void MPPASMCALL X86_InitMixBuffer(int *pBuffer, UINT nSamples);
void MPPASMCALL X86_EndChannelOfs(MODCHANNEL *pChannel, int *pBuffer, UINT nSamples);
void MPPASMCALL X86_StereoFill(int *pBuffer, UINT nSamples, LPLONG lpROfs, LPLONG lpLOfs);
void X86_StereoMixToFloat(const int *, float *, float *, UINT nCount);
void X86_FloatToStereoMix(const float *pIn1, const float *pIn2, int *pOut, UINT nCount);
/////////////////////////////////////////////////////
// Mono samples functions
BEGIN_MIX_INTERFACE(Mono8BitMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8NOIDO
SNDMIX_STOREMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Mono16BitMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16NOIDO
SNDMIX_STOREMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Mono8BitLinearMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8LINEAR
SNDMIX_STOREMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Mono16BitLinearMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16LINEAR
SNDMIX_STOREMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Mono8BitSplineMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8SPLINE
SNDMIX_STOREMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Mono16BitSplineMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16SPLINE
SNDMIX_STOREMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Mono8BitFirFilterMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8FIRFILTER
SNDMIX_STOREMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Mono16BitFirFilterMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16FIRFILTER
SNDMIX_STOREMONOVOL
END_MIX_INTERFACE()
// Volume Ramps
BEGIN_RAMPMIX_INTERFACE(Mono8BitRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8NOIDO
SNDMIX_RAMPMONOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Mono16BitRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16NOIDO
SNDMIX_RAMPMONOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Mono8BitLinearRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8LINEAR
SNDMIX_RAMPMONOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Mono16BitLinearRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16LINEAR
SNDMIX_RAMPMONOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Mono8BitSplineRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8SPLINE
SNDMIX_RAMPMONOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Mono16BitSplineRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16SPLINE
SNDMIX_RAMPMONOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Mono8BitFirFilterRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8FIRFILTER
SNDMIX_RAMPMONOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Mono16BitFirFilterRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16FIRFILTER
SNDMIX_RAMPMONOVOL
END_RAMPMIX_INTERFACE()
//////////////////////////////////////////////////////
// Fast mono mix for leftvol=rightvol (1 less imul)
BEGIN_MIX_INTERFACE(FastMono8BitMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8NOIDO
SNDMIX_STOREFASTMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(FastMono16BitMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16NOIDO
SNDMIX_STOREFASTMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(FastMono8BitLinearMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8LINEAR
SNDMIX_STOREFASTMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(FastMono16BitLinearMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16LINEAR
SNDMIX_STOREFASTMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(FastMono8BitSplineMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8SPLINE
SNDMIX_STOREFASTMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(FastMono16BitSplineMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16SPLINE
SNDMIX_STOREFASTMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(FastMono8BitFirFilterMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8FIRFILTER
SNDMIX_STOREFASTMONOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(FastMono16BitFirFilterMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16FIRFILTER
SNDMIX_STOREFASTMONOVOL
END_MIX_INTERFACE()
// Fast Ramps
BEGIN_FASTRAMPMIX_INTERFACE(FastMono8BitRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8NOIDO
SNDMIX_RAMPFASTMONOVOL
END_FASTRAMPMIX_INTERFACE()
BEGIN_FASTRAMPMIX_INTERFACE(FastMono16BitRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16NOIDO
SNDMIX_RAMPFASTMONOVOL
END_FASTRAMPMIX_INTERFACE()
BEGIN_FASTRAMPMIX_INTERFACE(FastMono8BitLinearRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8LINEAR
SNDMIX_RAMPFASTMONOVOL
END_FASTRAMPMIX_INTERFACE()
BEGIN_FASTRAMPMIX_INTERFACE(FastMono16BitLinearRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16LINEAR
SNDMIX_RAMPFASTMONOVOL
END_FASTRAMPMIX_INTERFACE()
BEGIN_FASTRAMPMIX_INTERFACE(FastMono8BitSplineRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8SPLINE
SNDMIX_RAMPFASTMONOVOL
END_FASTRAMPMIX_INTERFACE()
BEGIN_FASTRAMPMIX_INTERFACE(FastMono16BitSplineRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16SPLINE
SNDMIX_RAMPFASTMONOVOL
END_FASTRAMPMIX_INTERFACE()
BEGIN_FASTRAMPMIX_INTERFACE(FastMono8BitFirFilterRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8FIRFILTER
SNDMIX_RAMPFASTMONOVOL
END_FASTRAMPMIX_INTERFACE()
BEGIN_FASTRAMPMIX_INTERFACE(FastMono16BitFirFilterRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETMONOVOL16FIRFILTER
SNDMIX_RAMPFASTMONOVOL
END_FASTRAMPMIX_INTERFACE()
//////////////////////////////////////////////////////
// Stereo samples
BEGIN_MIX_INTERFACE(Stereo8BitMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETSTEREOVOL8NOIDO
SNDMIX_STORESTEREOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Stereo16BitMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETSTEREOVOL16NOIDO
SNDMIX_STORESTEREOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Stereo8BitLinearMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETSTEREOVOL8LINEAR
SNDMIX_STORESTEREOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Stereo16BitLinearMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETSTEREOVOL16LINEAR
SNDMIX_STORESTEREOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Stereo8BitSplineMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETSTEREOVOL8SPLINE
SNDMIX_STORESTEREOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Stereo16BitSplineMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETSTEREOVOL16SPLINE
SNDMIX_STORESTEREOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Stereo8BitFirFilterMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETSTEREOVOL8FIRFILTER
SNDMIX_STORESTEREOVOL
END_MIX_INTERFACE()
BEGIN_MIX_INTERFACE(Stereo16BitFirFilterMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETSTEREOVOL16FIRFILTER
SNDMIX_STORESTEREOVOL
END_MIX_INTERFACE()
// Volume Ramps
BEGIN_RAMPMIX_INTERFACE(Stereo8BitRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETSTEREOVOL8NOIDO
SNDMIX_RAMPSTEREOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Stereo16BitRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETSTEREOVOL16NOIDO
SNDMIX_RAMPSTEREOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Stereo8BitLinearRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETSTEREOVOL8LINEAR
SNDMIX_RAMPSTEREOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Stereo16BitLinearRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETSTEREOVOL16LINEAR
SNDMIX_RAMPSTEREOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Stereo8BitSplineRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETSTEREOVOL8SPLINE
SNDMIX_RAMPSTEREOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Stereo16BitSplineRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETSTEREOVOL16SPLINE
SNDMIX_RAMPSTEREOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Stereo8BitFirFilterRampMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETSTEREOVOL8FIRFILTER
SNDMIX_RAMPSTEREOVOL
END_RAMPMIX_INTERFACE()
BEGIN_RAMPMIX_INTERFACE(Stereo16BitFirFilterRampMix)
SNDMIX_BEGINSAMPLELOOP16
SNDMIX_GETSTEREOVOL16FIRFILTER
SNDMIX_RAMPSTEREOVOL
END_RAMPMIX_INTERFACE()
//////////////////////////////////////////////////////
// Resonant Filter Mix
#ifndef NO_FILTER
// Mono Filter Mix
BEGIN_MIX_FLT_INTERFACE(FilterMono8BitMix)
SNDMIX_BEGINSAMPLELOOP8
SNDMIX_GETMONOVOL8NOIDO
SNDMIX_PROCESSFILTER
SNDMIX_STOREMONOVOL
END_MIX_FLT_INTERFACE()
BEGIN_MIX_FLT_INTERFACE(FilterMono16BitMix)