48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
#ifndef MIXER_DEFS_H
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#define MIXER_DEFS_H
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#include "AL/al.h"
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#include "alcmain.h"
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#include "alspan.h"
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#include "hrtf.h"
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union InterpState;
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struct MixHrtfFilter;
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template<typename TypeTag, typename InstTag>
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const float *Resample_(const InterpState *state, const float *RESTRICT src, ALuint frac,
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ALuint increment, const al::span<float> dst);
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template<typename InstTag>
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void Mix_(const al::span<const float> InSamples, const al::span<FloatBufferLine> OutBuffer,
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float *CurrentGains, const float *TargetGains, const size_t Counter, const size_t OutPos);
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template<typename InstTag>
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void MixHrtf_(const float *InSamples, float2 *AccumSamples, const ALuint IrSize,
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const MixHrtfFilter *hrtfparams, const size_t BufferSize);
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template<typename InstTag>
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void MixHrtfBlend_(const float *InSamples, float2 *AccumSamples, const ALuint IrSize,
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const HrtfFilter *oldparams, const MixHrtfFilter *newparams, const size_t BufferSize);
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template<typename InstTag>
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void MixDirectHrtf_(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
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const al::span<const FloatBufferLine> InSamples, float2 *AccumSamples, DirectHrtfState *State,
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const size_t BufferSize);
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/* Vectorized resampler helpers */
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inline void InitPosArrays(ALuint frac, ALuint increment, ALuint *frac_arr, ALuint *pos_arr,
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size_t size)
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{
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pos_arr[0] = 0;
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frac_arr[0] = frac;
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for(size_t i{1};i < size;i++)
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{
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const ALuint frac_tmp{frac_arr[i-1] + increment};
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pos_arr[i] = pos_arr[i-1] + (frac_tmp>>FRACTIONBITS);
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frac_arr[i] = frac_tmp&FRACTIONMASK;
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}
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}
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#endif /* MIXER_DEFS_H */
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