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