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#include "config.h"
#include "AL/alc.h"
#include "AL/al.h"
#include "alMain.h"
#include "alSource.h"
#include "alAuxEffectSlot.h"
#include "mixer_defs.h"
#ifdef __GNUC__
#define LIKELY(x) __builtin_expect(!!(x), 1)
#define UNLIKELY(x) __builtin_expect(!!(x), 0)
#else
#define LIKELY(x) (x)
#define UNLIKELY(x) (x)
#endif
#define REAL_MERGE2(a,b) a##b
#define MERGE2(a,b) REAL_MERGE2(a,b)
#define MixDirect_Hrtf MERGE2(MixDirect_Hrtf_,SUFFIX)
#define MixDirect MERGE2(MixDirect_,SUFFIX)
#define MixSend MERGE2(MixSend_,SUFFIX)
static __inline void ApplyCoeffsStep(ALuint Offset, ALfloat (*RESTRICT Values)[2],
const ALuint irSize,
ALfloat (*RESTRICT Coeffs)[2],
ALfloat (*RESTRICT CoeffStep)[2],
ALfloat left, ALfloat right);
static __inline void ApplyCoeffs(ALuint Offset, ALfloat (*RESTRICT Values)[2],
const ALuint irSize,
ALfloat (*RESTRICT Coeffs)[2],
ALfloat left, ALfloat right);
#ifndef NO_MIXDIRECT_HRTF
void MixDirect_Hrtf(ALsource *Source, ALCdevice *Device, DirectParams *params,
const ALfloat *RESTRICT data, ALuint srcchan,
ALuint OutPos, ALuint SamplesToDo, ALuint BufferSize)
{
ALfloat (*RESTRICT DryBuffer)[BUFFERSIZE] = Device->DryBuffer;
ALfloat *RESTRICT ClickRemoval = Device->ClickRemoval;
ALfloat *RESTRICT PendingClicks = Device->PendingClicks;
const ALuint IrSize = GetHrtfIrSize(Device->Hrtf);
const ALint *RESTRICT DelayStep = params->Hrtf.DelayStep;
ALfloat (*RESTRICT CoeffStep)[2] = params->Hrtf.CoeffStep;
ALfloat (*RESTRICT TargetCoeffs)[2] = params->Hrtf.Coeffs[srcchan];
ALuint *RESTRICT TargetDelay = params->Hrtf.Delay[srcchan];
ALfloat *RESTRICT History = Source->Hrtf.History[srcchan];
ALfloat (*RESTRICT Values)[2] = Source->Hrtf.Values[srcchan];
ALint Counter = maxu(Source->Hrtf.Counter, OutPos) - OutPos;
ALuint Offset = Source->Hrtf.Offset + OutPos;
ALIGN(16) ALfloat Coeffs[HRIR_LENGTH][2];
ALuint Delay[2];
ALfloat left, right;
ALuint pos;
ALuint c;
pos = 0;
for(c = 0;c < IrSize;c++)
{
Coeffs[c][0] = TargetCoeffs[c][0] - (CoeffStep[c][0]*Counter);
Coeffs[c][1] = TargetCoeffs[c][1] - (CoeffStep[c][1]*Counter);
}
Delay[0] = TargetDelay[0] - (DelayStep[0]*Counter);
Delay[1] = TargetDelay[1] - (DelayStep[1]*Counter);
if(LIKELY(OutPos == 0))
{
History[Offset&SRC_HISTORY_MASK] = data[pos];
left = lerp(History[(Offset-(Delay[0]>>HRTFDELAY_BITS))&SRC_HISTORY_MASK],
History[(Offset-(Delay[0]>>HRTFDELAY_BITS)-1)&SRC_HISTORY_MASK],
(Delay[0]&HRTFDELAY_MASK)*(1.0f/HRTFDELAY_FRACONE));
right = lerp(History[(Offset-(Delay[1]>>HRTFDELAY_BITS))&SRC_HISTORY_MASK],
History[(Offset-(Delay[1]>>HRTFDELAY_BITS)-1)&SRC_HISTORY_MASK],
(Delay[1]&HRTFDELAY_MASK)*(1.0f/HRTFDELAY_FRACONE));
ClickRemoval[FrontLeft] -= Values[(Offset+1)&HRIR_MASK][0] +
Coeffs[0][0] * left;
ClickRemoval[FrontRight] -= Values[(Offset+1)&HRIR_MASK][1] +
Coeffs[0][1] * right;
}
for(pos = 0;pos < BufferSize && Counter > 0;pos++)
{
History[Offset&SRC_HISTORY_MASK] = data[pos];
left = lerp(History[(Offset-(Delay[0]>>HRTFDELAY_BITS))&SRC_HISTORY_MASK],
History[(Offset-(Delay[0]>>HRTFDELAY_BITS)-1)&SRC_HISTORY_MASK],
(Delay[0]&HRTFDELAY_MASK)*(1.0f/HRTFDELAY_FRACONE));
right = lerp(History[(Offset-(Delay[1]>>HRTFDELAY_BITS))&SRC_HISTORY_MASK],
History[(Offset-(Delay[1]>>HRTFDELAY_BITS)-1)&SRC_HISTORY_MASK],
(Delay[1]&HRTFDELAY_MASK)*(1.0f/HRTFDELAY_FRACONE));
Delay[0] += DelayStep[0];
Delay[1] += DelayStep[1];
Values[(Offset+IrSize)&HRIR_MASK][0] = 0.0f;
Values[(Offset+IrSize)&HRIR_MASK][1] = 0.0f;
Offset++;
ApplyCoeffsStep(Offset, Values, IrSize, Coeffs, CoeffStep, left, right);
DryBuffer[FrontLeft][OutPos] += Values[Offset&HRIR_MASK][0];
DryBuffer[FrontRight][OutPos] += Values[Offset&HRIR_MASK][1];
OutPos++;
Counter--;
}
Delay[0] >>= HRTFDELAY_BITS;
Delay[1] >>= HRTFDELAY_BITS;
for(;pos < BufferSize;pos++)
{
History[Offset&SRC_HISTORY_MASK] = data[pos];
left = History[(Offset-Delay[0])&SRC_HISTORY_MASK];
right = History[(Offset-Delay[1])&SRC_HISTORY_MASK];
Values[(Offset+IrSize)&HRIR_MASK][0] = 0.0f;
Values[(Offset+IrSize)&HRIR_MASK][1] = 0.0f;
Offset++;
ApplyCoeffs(Offset, Values, IrSize, Coeffs, left, right);
DryBuffer[FrontLeft][OutPos] += Values[Offset&HRIR_MASK][0];
DryBuffer[FrontRight][OutPos] += Values[Offset&HRIR_MASK][1];
OutPos++;
}
if(LIKELY(OutPos == SamplesToDo))
{
History[Offset&SRC_HISTORY_MASK] = data[pos];
left = History[(Offset-Delay[0])&SRC_HISTORY_MASK];
right = History[(Offset-Delay[1])&SRC_HISTORY_MASK];
PendingClicks[FrontLeft] += Values[(Offset+1)&HRIR_MASK][0] +
Coeffs[0][0] * left;
PendingClicks[FrontRight] += Values[(Offset+1)&HRIR_MASK][1] +
Coeffs[0][1] * right;
}
}
#endif
#ifndef NO_MIXDIRECT
void MixDirect(ALsource *Source, ALCdevice *Device, DirectParams *params,
const ALfloat *RESTRICT data, ALuint srcchan,
ALuint OutPos, ALuint SamplesToDo, ALuint BufferSize)
{
ALfloat (*RESTRICT DryBuffer)[BUFFERSIZE] = Device->DryBuffer;
ALfloat *RESTRICT ClickRemoval = Device->ClickRemoval;
ALfloat *RESTRICT PendingClicks = Device->PendingClicks;
ALfloat DrySend[MaxChannels];
ALuint pos;
ALuint c;
(void)Source;
for(c = 0;c < MaxChannels;c++)
DrySend[c] = params->Gains[srcchan][c];
pos = 0;
if(OutPos == 0)
{
for(c = 0;c < MaxChannels;c++)
ClickRemoval[c] -= data[pos]*DrySend[c];
}
for(c = 0;c < MaxChannels;c++)
{
for(pos = 0;pos < BufferSize;pos++)
DryBuffer[c][OutPos+pos] += data[pos]*DrySend[c];
}
if(OutPos+pos == SamplesToDo)
{
for(c = 0;c < MaxChannels;c++)
PendingClicks[c] += data[pos]*DrySend[c];
}
}
#endif
#ifndef NO_MIXSEND
void MixSend(SendParams *params, const ALfloat *RESTRICT data,
ALuint OutPos, ALuint SamplesToDo, ALuint BufferSize)
{
ALeffectslot *Slot = params->Slot;
ALfloat *WetBuffer = Slot->WetBuffer;
ALfloat *WetClickRemoval = Slot->ClickRemoval;
ALfloat *WetPendingClicks = Slot->PendingClicks;
ALfloat WetSend = params->Gain;
ALuint pos;
pos = 0;
if(OutPos == 0)
{
WetClickRemoval[0] -= data[pos] * WetSend;
}
for(pos = 0;pos < BufferSize;pos++)
{
WetBuffer[OutPos] += data[pos] * WetSend;
OutPos++;
}
if(OutPos == SamplesToDo)
{
WetPendingClicks[0] += data[pos] * WetSend;
}
}
#endif
#undef MixSend
#undef MixDirect
#undef MixDirect_Hrtf
#undef MERGE2
#undef REAL_MERGE2
#undef UNLIKELY
#undef LIKELY
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