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93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
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/*
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* MixFuncTable.cpp
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* ----------------
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* Purpose: Table containing all mixer functions.
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* Notes : The Visual Studio project settings for this file have been adjusted
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* to force function inlining, so that the mixer has a somewhat acceptable
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* performance in debug mode. If you need to debug anything here, be sure
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* to disable those optimizations if needed.
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* Authors: OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#include "stdafx.h"
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#include "Mixer.h"
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#include "Snd_defs.h"
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#include "ModChannel.h"
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#include "MixFuncTable.h"
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#ifdef MPT_INTMIXER
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#include "IntMixer.h"
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#else
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#include "FloatMixer.h"
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#endif // MPT_INTMIXER
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OPENMPT_NAMESPACE_BEGIN
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namespace MixFuncTable
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{
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#ifdef MPT_INTMIXER
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using I8M = Int8MToIntS;
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using I16M = Int16MToIntS;
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using I8S = Int8SToIntS;
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using I16S = Int16SToIntS;
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#else
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using I8M = Int8MToFloatS;
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using I16M = Int16MToFloatS;
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using I8S = Int8SToFloatS;
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using I16S = Int16SToFloatS;
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#endif // MPT_INTMIXER
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// Build mix function table for given resampling, filter and ramping settings: One function each for 8-Bit / 16-Bit Mono / Stereo
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#define BuildMixFuncTableRamp(resampling, filter, ramp) \
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SampleLoop<I8M, resampling<I8M>, filter<I8M>, MixMono ## ramp<I8M> >, \
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SampleLoop<I16M, resampling<I16M>, filter<I16M>, MixMono ## ramp<I16M> >, \
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SampleLoop<I8S, resampling<I8S>, filter<I8S>, MixStereo ## ramp<I8S> >, \
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SampleLoop<I16S, resampling<I16S>, filter<I16S>, MixStereo ## ramp<I16S> >
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// Build mix function table for given resampling, filter settings: With and without ramping
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#define BuildMixFuncTableFilter(resampling, filter) \
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BuildMixFuncTableRamp(resampling, filter, NoRamp), \
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BuildMixFuncTableRamp(resampling, filter, Ramp)
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// Build mix function table for given resampling settings: With and without filter
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#define BuildMixFuncTable(resampling) \
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BuildMixFuncTableFilter(resampling, NoFilter), \
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BuildMixFuncTableFilter(resampling, ResonantFilter)
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const MixFuncInterface Functions[6 * 16] =
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{
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BuildMixFuncTable(NoInterpolation), // No SRC
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BuildMixFuncTable(LinearInterpolation), // Linear SRC
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BuildMixFuncTable(FastSincInterpolation), // Fast Sinc (Cubic Spline) SRC
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BuildMixFuncTable(PolyphaseInterpolation), // Kaiser SRC
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BuildMixFuncTable(FIRFilterInterpolation), // FIR SRC
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BuildMixFuncTable(AmigaBlepInterpolation), // Amiga emulation
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};
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#undef BuildMixFuncTableRamp
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#undef BuildMixFuncTableFilter
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#undef BuildMixFuncTable
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ResamplingIndex ResamplingModeToMixFlags(ResamplingMode resamplingMode)
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{
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switch(resamplingMode)
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{
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case SRCMODE_NEAREST: return ndxNoInterpolation;
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case SRCMODE_LINEAR: return ndxLinear;
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case SRCMODE_CUBIC: return ndxFastSinc;
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case SRCMODE_SINC8LP: return ndxKaiser;
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case SRCMODE_SINC8: return ndxFIRFilter;
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case SRCMODE_AMIGA: return ndxAmigaBlep;
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default: MPT_ASSERT_NOTREACHED();
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}
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return ndxNoInterpolation;
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}
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} // namespace MixFuncTable
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OPENMPT_NAMESPACE_END
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