namespace MixFuncTable
{
#ifdef MPT_INTMIXER
typedef Int8MToIntS I8M;
typedef Int16MToIntS I16M;
typedef Int8SToIntS I8S;
typedef Int16SToIntS I16S;
#else
typedef Int8MToFloatS I8M;
typedef Int16MToFloatS I16M;
typedef Int8SToFloatS I8S;
typedef Int16SToFloatS I16S;
#endif // MPT_INTMIXER
// Table index:
// [b1-b0] format (8-bit-mono, 16-bit-mono, 8-bit-stereo, 16-bit-stereo)
// [b2] ramp
// [b3] filter
// [b6-b4] src type
// Sample type / processing type index
enum FunctionIndex
{
ndx16Bit = 0x01,
ndxStereo = 0x02,
ndxRamp = 0x04,
ndxFilter = 0x08,
};
// SRC index
enum ResamplingIndex
{
ndxNoInterpolation = 0x00,
ndxLinear = 0x10,
ndxFastSinc = 0x20,
ndxKaiser = 0x30,
ndxFIRFilter = 0x40,
};
// Build mix function table for given resampling, filter and ramping settings: One function each for 8-Bit / 16-Bit Mono / Stereo
#define BuildMixFuncTableRamp(resampling, filter, ramp) \
SampleLoop<I8M, resampling<I8M>, filter<I8M>, MixMono ## ramp<I8M> >, \
SampleLoop<I16M, resampling<I16M>, filter<I16M>, MixMono ## ramp<I16M> >, \
SampleLoop<I8S, resampling<I8S>, filter<I8S>, MixStereo ## ramp<I8S> >, \
SampleLoop<I16S, resampling<I16S>, filter<I16S>, MixStereo ## ramp<I16S> >
// Build mix function table for given resampling, filter settings: With and without ramping
#define BuildMixFuncTableFilter(resampling, filter) \
BuildMixFuncTableRamp(resampling, filter, NoRamp), \
BuildMixFuncTableRamp(resampling, filter, Ramp)
// Build mix function table for given resampling settings: With and without filter
#define BuildMixFuncTable(resampling) \
BuildMixFuncTableFilter(resampling, NoFilter), \
BuildMixFuncTableFilter(resampling, ResonantFilter)
const MixFuncInterface Functions[5 * 16] =
{
BuildMixFuncTable(NoInterpolation), // No SRC
BuildMixFuncTable(LinearInterpolation), // Linear SRC
BuildMixFuncTable(FastSincInterpolation), // Fast Sinc (Cubic Spline) SRC
BuildMixFuncTable(PolyphaseInterpolation), // Kaiser SRC
BuildMixFuncTable(FIRFilterInterpolation), // FIR SRC
};
#undef BuildMixFuncTableRamp
#undef BuildMixFuncTableFilter
#undef BuildMixFuncTable
static forceinline ResamplingIndex ResamplingModeToMixFlags(uint8 resamplingMode)
//-------------------------------------------------------------------------------
{
switch(resamplingMode)
{
case SRCMODE_NEAREST: return ndxNoInterpolation;
case SRCMODE_LINEAR: return ndxLinear;
case SRCMODE_SPLINE: return ndxFastSinc;
case SRCMODE_POLYPHASE: return ndxKaiser;
case SRCMODE_FIRFILTER: return ndxFIRFilter;
}
return ndxNoInterpolation;
}
} // namespace MixFuncTable
namespace MixFuncTable
{
#ifdef MPT_INTMIXER
typedef Int8MToIntS I8M;
typedef Int16MToIntS I16M;
typedef Int8SToIntS I8S;
typedef Int16SToIntS I16S;
#else
typedef Int8MToFloatS I8M;
typedef Int16MToFloatS I16M;
typedef Int8SToFloatS I8S;
typedef Int16SToFloatS I16S;
#endif // MPT_INTMIXER
// Build mix function table for given resampling, filter and ramping settings: One function each for 8-Bit / 16-Bit Mono / Stereo
#define BuildMixFuncTableRamp(resampling, filter, ramp) \
SampleLoop<I8M, resampling<I8M>, filter<I8M>, MixMono ## ramp<I8M> >, \
SampleLoop<I16M, resampling<I16M>, filter<I16M>, MixMono ## ramp<I16M> >, \
SampleLoop<I8S, resampling<I8S>, filter<I8S>, MixStereo ## ramp<I8S> >, \
SampleLoop<I16S, resampling<I16S>, filter<I16S>, MixStereo ## ramp<I16S> >
// Build mix function table for given resampling, filter settings: With and without ramping
#define BuildMixFuncTableFilter(resampling, filter) \
BuildMixFuncTableRamp(resampling, filter, NoRamp), \
BuildMixFuncTableRamp(resampling, filter, Ramp)
// Build mix function table for given resampling settings: With and without filter
#define BuildMixFuncTable(resampling) \
BuildMixFuncTableFilter(resampling, NoFilter), \
BuildMixFuncTableFilter(resampling, ResonantFilter)
const MixFuncInterface Functions[6 * 16] =
{
BuildMixFuncTable(NoInterpolation), // No SRC
BuildMixFuncTable(LinearInterpolation), // Linear SRC
BuildMixFuncTable(FastSincInterpolation), // Fast Sinc (Cubic Spline) SRC
BuildMixFuncTable(PolyphaseInterpolation), // Kaiser SRC
BuildMixFuncTable(FIRFilterInterpolation), // FIR SRC
BuildMixFuncTable(AmigaBlepInterpolation), // Amiga emulation
};
#undef BuildMixFuncTableRamp
#undef BuildMixFuncTableFilter
#undef BuildMixFuncTable
ResamplingIndex ResamplingModeToMixFlags(ResamplingMode resamplingMode)
{
switch(resamplingMode)
{
case SRCMODE_NEAREST: return ndxNoInterpolation;
case SRCMODE_LINEAR: return ndxLinear;
case SRCMODE_SPLINE: return ndxFastSinc;
case SRCMODE_POLYPHASE: return ndxKaiser;
case SRCMODE_FIRFILTER: return ndxFIRFilter;
case SRCMODE_AMIGA: return ndxAmigaBlep;
default: MPT_ASSERT_NOTREACHED();
}
return ndxNoInterpolation;
}
} // namespace MixFuncTable
