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#include "config.h"
#include "alMain.h"
#include "alSource.h"
#include "hrtf.h"
#include "mixer_defs.h"
#include "align.h"
#include "alu.h"
static inline void ApplyCoeffs(ALsizei Offset, ALfloat (*restrict Values)[2],
const ALsizei irSize,
const ALfloat (*restrict Coeffs)[2],
ALfloat left, ALfloat right);
void MixHrtf(ALfloat *restrict LeftOut, ALfloat *restrict RightOut,
const ALfloat *data, ALsizei Offset, ALsizei OutPos,
const ALsizei IrSize, MixHrtfParams *hrtfparams, HrtfState *hrtfstate,
ALsizei BufferSize)
{
const ALfloat (*Coeffs)[2] = ASSUME_ALIGNED(hrtfparams->Coeffs, 16);
const ALsizei Delay[2] = { hrtfparams->Delay[0], hrtfparams->Delay[1] };
ALfloat gainstep = hrtfparams->GainStep;
ALfloat gain = hrtfparams->Gain;
ALfloat left, right;
ALsizei i;
LeftOut += OutPos;
RightOut += OutPos;
for(i = 0;i < BufferSize;i++)
{
hrtfstate->History[Offset&HRTF_HISTORY_MASK] = *(data++);
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);
*(LeftOut++) += hrtfstate->Values[Offset&HRIR_MASK][0]*gain;
*(RightOut++) += hrtfstate->Values[Offset&HRIR_MASK][1]*gain;
gain += gainstep;
}
hrtfparams->Gain = gain;
}
void MixDirectHrtf(ALfloat *restrict LeftOut, ALfloat *restrict RightOut,
const ALfloat *data, ALsizei Offset, const ALsizei IrSize,
const ALfloat (*restrict Coeffs)[2], ALfloat (*restrict Values)[2],
ALsizei BufferSize)
{
ALfloat insample;
ALsizei i;
for(i = 0;i < BufferSize;i++)
{
Values[(Offset+IrSize)&HRIR_MASK][0] = 0.0f;
Values[(Offset+IrSize)&HRIR_MASK][1] = 0.0f;
Offset++;
insample = *(data++);
ApplyCoeffs(Offset, Values, IrSize, Coeffs, insample, insample);
*(LeftOut++) += Values[Offset&HRIR_MASK][0];
*(RightOut++) += Values[Offset&HRIR_MASK][1];
}
}
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