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#include "config.h"
#include <arm_neon.h>
#include "AL/al.h"
#include "AL/alc.h"
#include "alMain.h"
#include "alu.h"
#include "hrtf.h"
static inline void SetupCoeffs(ALfloat (*restrict OutCoeffs)[2],
const HrtfParams *hrtfparams,
ALuint IrSize, ALuint Counter)
{
ALuint c;
float32x4_t counter4;
{
float32x2_t counter2 = vdup_n_f32(-(float)Counter);
counter4 = vcombine_f32(counter2, counter2);
}
for(c = 0;c < IrSize;c += 2)
{
float32x4_t step4 = vld1q_f32((float32_t*)hrtfparams->CoeffStep[c]);
float32x4_t coeffs = vld1q_f32((float32_t*)hrtfparams->Coeffs[c]);
coeffs = vmlaq_f32(coeffs, step4, counter4);
vst1q_f32((float32_t*)OutCoeffs[c], coeffs);
}
}
static inline void ApplyCoeffsStep(ALuint Offset, ALfloat (*restrict Values)[2],
const ALuint IrSize,
ALfloat (*restrict Coeffs)[2],
const ALfloat (*restrict CoeffStep)[2],
ALfloat left, ALfloat right)
{
ALuint c;
float32x4_t leftright4;
{
float32x2_t leftright2 = vdup_n_f32(0.0);
leftright2 = vset_lane_f32(left, leftright2, 0);
leftright2 = vset_lane_f32(right, leftright2, 1);
leftright4 = vcombine_f32(leftright2, leftright2);
}
for(c = 0;c < IrSize;c += 2)
{
const ALuint o0 = (Offset+c)&HRIR_MASK;
const ALuint o1 = (o0+1)&HRIR_MASK;
float32x4_t vals = vcombine_f32(vld1_f32((float32_t*)&Values[o0][0]),
vld1_f32((float32_t*)&Values[o1][0]));
float32x4_t coefs = vld1q_f32((float32_t*)&Coeffs[c][0]);
float32x4_t deltas = vld1q_f32(&CoeffStep[c][0]);
vals = vmlaq_f32(vals, coefs, leftright4);
coefs = vaddq_f32(coefs, deltas);
vst1_f32((float32_t*)&Values[o0][0], vget_low_f32(vals));
vst1_f32((float32_t*)&Values[o1][0], vget_high_f32(vals));
vst1q_f32(&Coeffs[c][0], coefs);
}
}
static inline void ApplyCoeffs(ALuint Offset, ALfloat (*restrict Values)[2],
const ALuint IrSize,
ALfloat (*restrict Coeffs)[2],
ALfloat left, ALfloat right)
{
ALuint c;
float32x4_t leftright4;
{
float32x2_t leftright2 = vdup_n_f32(0.0);
leftright2 = vset_lane_f32(left, leftright2, 0);
leftright2 = vset_lane_f32(right, leftright2, 1);
leftright4 = vcombine_f32(leftright2, leftright2);
}
for(c = 0;c < IrSize;c += 2)
{
const ALuint o0 = (Offset+c)&HRIR_MASK;
const ALuint o1 = (o0+1)&HRIR_MASK;
float32x4_t vals = vcombine_f32(vld1_f32((float32_t*)&Values[o0][0]),
vld1_f32((float32_t*)&Values[o1][0]));
float32x4_t coefs = vld1q_f32((float32_t*)&Coeffs[c][0]);
vals = vmlaq_f32(vals, coefs, leftright4);
vst1_f32((float32_t*)&Values[o0][0], vget_low_f32(vals));
vst1_f32((float32_t*)&Values[o1][0], vget_high_f32(vals));
}
}
#define SUFFIX Neon
#include "mixer_inc.c"
#undef SUFFIX
void Mix_Neon(const ALfloat *data, ALuint OutChans, ALfloat (*restrict OutBuffer)[BUFFERSIZE],
MixGains *Gains, ALuint Counter, ALuint OutPos, ALuint BufferSize)
{
ALfloat gain, step;
float32x4_t gain4;
ALuint c;
for(c = 0;c < OutChans;c++)
{
ALuint pos = 0;
gain = Gains[c].Current;
step = Gains[c].Step;
if(step != 0.0f && Counter > 0)
{
for(;pos < BufferSize && pos < Counter;pos++)
{
OutBuffer[c][OutPos+pos] += data[pos]*gain;
gain += step;
}
if(pos == Counter)
gain = Gains[c].Target;
Gains[c].Current = gain;
/* Mix until pos is aligned with 4 or the mix is done. */
for(;pos < BufferSize && (pos&3) != 0;pos++)
OutBuffer[c][OutPos+pos] += data[pos]*gain;
}
if(!(fabsf(gain) > GAIN_SILENCE_THRESHOLD))
continue;
gain4 = vdupq_n_f32(gain);
for(;BufferSize-pos > 3;pos += 4)
{
const float32x4_t val4 = vld1q_f32(&data[pos]);
float32x4_t dry4 = vld1q_f32(&OutBuffer[c][OutPos+pos]);
dry4 = vaddq_f32(dry4, vmulq_f32(val4, gain4));
vst1q_f32(&OutBuffer[c][OutPos+pos], dry4);
}
for(;pos < BufferSize;pos++)
OutBuffer[c][OutPos+pos] += data[pos]*gain;
}
}
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