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#include "config.h"
#include "alMain.h"
#include "alSource.h"
#include "hrtf.h"
#include "mixer_defs.h"
#include "align.h"
#define REAL_MERGE(a,b) a##b
#define MERGE(a,b) REAL_MERGE(a,b)
#define MixHrtf MERGE(MixHrtf_,SUFFIX)
static inline void ApplyCoeffs(ALuint Offset, ALfloat (*restrict Values)[2],
const ALuint irSize,
ALfloat (*restrict Coeffs)[2],
ALfloat left, ALfloat right);
void MixHrtf(ALfloat (*restrict OutBuffer)[BUFFERSIZE], const ALfloat *data,
ALuint Offset, const ALuint IrSize,
const HrtfParams *hrtfparams, HrtfState *hrtfstate, ALuint BufferSize)
{
alignas(16) ALfloat Coeffs[HRIR_LENGTH][2];
ALuint Delay[2];
ALfloat left, right;
ALuint pos;
ALuint c;
for(c = 0;c < IrSize;c++)
{
Coeffs[c][0] = hrtfparams->Coeffs[c][0];
Coeffs[c][1] = hrtfparams->Coeffs[c][1];
}
Delay[0] = hrtfparams->Delay[0];
Delay[1] = hrtfparams->Delay[1];
for(pos = 0;pos < BufferSize;pos++)
{
hrtfstate->History[Offset&HRTF_HISTORY_MASK] = data[pos];
left = hrtfstate->History[(Offset-Delay[0])&HRTF_HISTORY_MASK];
right = hrtfstate->History[(Offset-Delay[1])&HRTF_HISTORY_MASK];
hrtfstate->Values[(Offset+IrSize)&HRIR_MASK][0] = 0.0f;
hrtfstate->Values[(Offset+IrSize)&HRIR_MASK][1] = 0.0f;
Offset++;
ApplyCoeffs(Offset, hrtfstate->Values, IrSize, Coeffs, left, right);
OutBuffer[0][pos] += hrtfstate->Values[Offset&HRIR_MASK][0];
OutBuffer[1][pos] += hrtfstate->Values[Offset&HRIR_MASK][1];
}
}
#undef MixHrtf
#undef MERGE
#undef REAL_MERGE
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