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#ifndef MIXER_DEFS_H
#define MIXER_DEFS_H
#include "AL/al.h"
#include "alcmain.h"
#include "alspan.h"
#include "hrtf.h"
union InterpState;
struct MixHrtfFilter;
enum InstSetType {
CTag,
SSETag,
SSE2Tag,
SSE3Tag,
SSE4Tag,
NEONTag
};
enum ResampleType {
CopyTag,
PointTag,
LerpTag,
CubicTag,
BSincTag,
FastBSincTag
};
template<ResampleType TypeTag, InstSetType InstTag>
const ALfloat *Resample_(const InterpState *state, const ALfloat *RESTRICT src, ALuint frac,
ALuint increment, const al::span<float> dst);
template<InstSetType InstTag>
void Mix_(const al::span<const float> InSamples, const al::span<FloatBufferLine> OutBuffer,
float *CurrentGains, const float *TargetGains, const size_t Counter, const size_t OutPos);
template<InstSetType InstTag>
void MixRow_(const al::span<float> OutBuffer, const al::span<const float> Gains,
const float *InSamples, const size_t InStride);
template<InstSetType InstTag>
void MixHrtf_(FloatBufferLine &LeftOut, FloatBufferLine &RightOut, const ALfloat *InSamples,
float2 *AccumSamples, const size_t OutPos, const ALuint IrSize, MixHrtfFilter *hrtfparams,
const size_t BufferSize);
template<InstSetType InstTag>
void MixHrtfBlend_(FloatBufferLine &LeftOut, FloatBufferLine &RightOut, const ALfloat *InSamples,
float2 *AccumSamples, const size_t OutPos, const ALuint IrSize, const HrtfFilter *oldparams,
MixHrtfFilter *newparams, const size_t BufferSize);
template<InstSetType InstTag>
void MixDirectHrtf_(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
const al::span<const FloatBufferLine> InSamples, float2 *AccumSamples, DirectHrtfState *State,
const size_t BufferSize);
/* Vectorized resampler helpers */
inline void InitPosArrays(ALuint frac, ALuint increment, ALuint *frac_arr, ALuint *pos_arr,
size_t size)
{
pos_arr[0] = 0;
frac_arr[0] = frac;
for(size_t i{1};i < size;i++)
{
const ALuint frac_tmp{frac_arr[i-1] + increment};
pos_arr[i] = pos_arr[i-1] + (frac_tmp>>FRACTIONBITS);
frac_arr[i] = frac_tmp&FRACTIONMASK;
}
}
#endif /* MIXER_DEFS_H */
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