🛠️🐜 Antkeeper superbuild with dependencies included
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309 lines
11 KiB
309 lines
11 KiB
#include "config.h"
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#include <arm_neon.h>
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#include <limits>
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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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#include "defs.h"
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#include "hrtfbase.h"
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template<>
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const ALfloat *Resample_<LerpTag,NEONTag>(const InterpState* UNUSED(state),
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const ALfloat *RESTRICT src, ALsizei frac, ALint increment,
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ALfloat *RESTRICT dst, ALsizei dstlen)
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{
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const int32x4_t increment4 = vdupq_n_s32(increment*4);
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const float32x4_t fracOne4 = vdupq_n_f32(1.0f/FRACTIONONE);
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const int32x4_t fracMask4 = vdupq_n_s32(FRACTIONMASK);
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alignas(16) ALsizei pos_[4], frac_[4];
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int32x4_t pos4, frac4;
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ALsizei todo, pos, i;
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ASSUME(frac >= 0);
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ASSUME(increment > 0);
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ASSUME(dstlen > 0);
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InitiatePositionArrays(frac, increment, frac_, pos_, 4);
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frac4 = vld1q_s32(frac_);
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pos4 = vld1q_s32(pos_);
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todo = dstlen & ~3;
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for(i = 0;i < todo;i += 4)
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{
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const int pos0 = vgetq_lane_s32(pos4, 0);
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const int pos1 = vgetq_lane_s32(pos4, 1);
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const int pos2 = vgetq_lane_s32(pos4, 2);
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const int pos3 = vgetq_lane_s32(pos4, 3);
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const float32x4_t val1 = (float32x4_t){src[pos0], src[pos1], src[pos2], src[pos3]};
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const float32x4_t val2 = (float32x4_t){src[pos0+1], src[pos1+1], src[pos2+1], src[pos3+1]};
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/* val1 + (val2-val1)*mu */
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const float32x4_t r0 = vsubq_f32(val2, val1);
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const float32x4_t mu = vmulq_f32(vcvtq_f32_s32(frac4), fracOne4);
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const float32x4_t out = vmlaq_f32(val1, mu, r0);
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vst1q_f32(&dst[i], out);
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frac4 = vaddq_s32(frac4, increment4);
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pos4 = vaddq_s32(pos4, vshrq_n_s32(frac4, FRACTIONBITS));
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frac4 = vandq_s32(frac4, fracMask4);
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}
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/* NOTE: These four elements represent the position *after* the last four
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* samples, so the lowest element is the next position to resample.
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*/
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pos = vgetq_lane_s32(pos4, 0);
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frac = vgetq_lane_s32(frac4, 0);
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for(;i < dstlen;++i)
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{
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dst[i] = lerp(src[pos], src[pos+1], frac * (1.0f/FRACTIONONE));
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frac += increment;
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pos += frac>>FRACTIONBITS;
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frac &= FRACTIONMASK;
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}
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return dst;
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}
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template<>
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const ALfloat *Resample_<BSincTag,NEONTag>(const InterpState *state, const ALfloat *RESTRICT src,
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ALsizei frac, ALint increment, ALfloat *RESTRICT dst, ALsizei dstlen)
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{
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const ALfloat *const filter = state->bsinc.filter;
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const float32x4_t sf4 = vdupq_n_f32(state->bsinc.sf);
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const ALsizei m = state->bsinc.m;
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const float32x4_t *fil, *scd, *phd, *spd;
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ALsizei pi, i, j, offset;
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float32x4_t r4;
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ALfloat pf;
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ASSUME(m > 0);
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ASSUME(dstlen > 0);
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ASSUME(increment > 0);
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ASSUME(frac >= 0);
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src -= state->bsinc.l;
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for(i = 0;i < dstlen;i++)
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{
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// Calculate the phase index and factor.
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#define FRAC_PHASE_BITDIFF (FRACTIONBITS-BSINC_PHASE_BITS)
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pi = frac >> FRAC_PHASE_BITDIFF;
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pf = (frac & ((1<<FRAC_PHASE_BITDIFF)-1)) * (1.0f/(1<<FRAC_PHASE_BITDIFF));
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#undef FRAC_PHASE_BITDIFF
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offset = m*pi*4;
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fil = (const float32x4_t*)(filter + offset); offset += m;
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scd = (const float32x4_t*)(filter + offset); offset += m;
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phd = (const float32x4_t*)(filter + offset); offset += m;
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spd = (const float32x4_t*)(filter + offset);
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// Apply the scale and phase interpolated filter.
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r4 = vdupq_n_f32(0.0f);
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{
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const ALsizei count = m >> 2;
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const float32x4_t pf4 = vdupq_n_f32(pf);
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ASSUME(count > 0);
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for(j = 0;j < count;j++)
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{
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/* f = ((fil + sf*scd) + pf*(phd + sf*spd)) */
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const float32x4_t f4 = vmlaq_f32(
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vmlaq_f32(fil[j], sf4, scd[j]),
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pf4, vmlaq_f32(phd[j], sf4, spd[j])
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);
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/* r += f*src */
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r4 = vmlaq_f32(r4, f4, vld1q_f32(&src[j*4]));
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}
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}
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r4 = vaddq_f32(r4, vcombine_f32(vrev64_f32(vget_high_f32(r4)),
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vrev64_f32(vget_low_f32(r4))));
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dst[i] = vget_lane_f32(vadd_f32(vget_low_f32(r4), vget_high_f32(r4)), 0);
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frac += increment;
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src += frac>>FRACTIONBITS;
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frac &= FRACTIONMASK;
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}
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return dst;
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}
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static inline void ApplyCoeffs(ALsizei /*Offset*/, float2 *RESTRICT Values, const ALsizei IrSize,
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const HrirArray<ALfloat> &Coeffs, const ALfloat left, const ALfloat right)
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{
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ASSUME(IrSize >= 2);
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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(ALsizei c{0};c < IrSize;c += 2)
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{
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float32x4_t vals = vcombine_f32(vld1_f32((float32_t*)&Values[c ][0]),
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vld1_f32((float32_t*)&Values[c+1][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[c ][0], vget_low_f32(vals));
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vst1_f32((float32_t*)&Values[c+1][0], vget_high_f32(vals));
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}
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}
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template<>
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void MixHrtf_<NEONTag>(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut, const ALfloat *data,
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float2 *RESTRICT AccumSamples, const ALsizei OutPos, const ALsizei IrSize,
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MixHrtfParams *hrtfparams, const ALsizei BufferSize)
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{
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MixHrtfBase<ApplyCoeffs>(LeftOut, RightOut, data, AccumSamples, OutPos, IrSize, hrtfparams,
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BufferSize);
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}
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template<>
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void MixHrtfBlend_<NEONTag>(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
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const ALfloat *data, float2 *RESTRICT AccumSamples, const ALsizei OutPos, const ALsizei IrSize,
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const HrtfParams *oldparams, MixHrtfParams *newparams, const ALsizei BufferSize)
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{
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MixHrtfBlendBase<ApplyCoeffs>(LeftOut, RightOut, data, AccumSamples, OutPos, IrSize, oldparams,
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newparams, BufferSize);
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}
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template<>
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void MixDirectHrtf_<NEONTag>(ALfloat *RESTRICT LeftOut, ALfloat *RESTRICT RightOut,
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const ALfloat (*data)[BUFFERSIZE], float2 *RESTRICT AccumSamples, DirectHrtfState *State,
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const ALsizei NumChans, const ALsizei BufferSize)
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{
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MixDirectHrtfBase<ApplyCoeffs>(LeftOut, RightOut, data, AccumSamples, State, NumChans,
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BufferSize);
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}
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template<>
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void Mix_<NEONTag>(const ALfloat *data, const ALsizei OutChans, ALfloat (*OutBuffer)[BUFFERSIZE],
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ALfloat *CurrentGains, const ALfloat *TargetGains, const ALsizei Counter, const ALsizei OutPos,
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const ALsizei BufferSize)
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{
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ASSUME(OutChans > 0);
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ASSUME(BufferSize > 0);
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const ALfloat delta{(Counter > 0) ? 1.0f/(ALfloat)Counter : 0.0f};
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for(ALsizei c{0};c < OutChans;c++)
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{
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ALfloat *RESTRICT dst{al::assume_aligned<16>(&OutBuffer[c][OutPos])};
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ALsizei pos{0};
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ALfloat gain{CurrentGains[c]};
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const ALfloat diff{TargetGains[c] - gain};
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if(std::fabs(diff) > std::numeric_limits<float>::epsilon())
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{
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ALsizei minsize{mini(BufferSize, Counter)};
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const ALfloat step{diff * delta};
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ALfloat step_count{0.0f};
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/* Mix with applying gain steps in aligned multiples of 4. */
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if(LIKELY(minsize > 3))
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{
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const float32x4_t four4{vdupq_n_f32(4.0f)};
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const float32x4_t step4{vdupq_n_f32(step)};
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const float32x4_t gain4{vdupq_n_f32(gain)};
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float32x4_t step_count4{vsetq_lane_f32(0.0f,
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vsetq_lane_f32(1.0f,
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vsetq_lane_f32(2.0f,
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vsetq_lane_f32(3.0f, vdupq_n_f32(0.0f), 3),
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2), 1), 0
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)};
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ALsizei todo{minsize >> 2};
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do {
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const float32x4_t val4 = vld1q_f32(&data[pos]);
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float32x4_t dry4 = vld1q_f32(&dst[pos]);
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dry4 = vmlaq_f32(dry4, val4, vmlaq_f32(gain4, step4, step_count4));
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step_count4 = vaddq_f32(step_count4, four4);
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vst1q_f32(&dst[pos], dry4);
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pos += 4;
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} while(--todo);
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/* NOTE: step_count4 now represents the next four counts after
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* the last four mixed samples, so the lowest element
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* represents the next step count to apply.
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*/
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step_count = vgetq_lane_f32(step_count4, 0);
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}
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/* Mix with applying left over gain steps that aren't aligned multiples of 4. */
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for(;pos < minsize;pos++)
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{
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dst[pos] += data[pos]*(gain + step*step_count);
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step_count += 1.0f;
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}
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if(pos == Counter)
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gain = TargetGains[c];
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else
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gain += step*step_count;
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CurrentGains[c] = gain;
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/* Mix until pos is aligned with 4 or the mix is done. */
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minsize = mini(BufferSize, (pos+3)&~3);
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for(;pos < minsize;pos++)
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dst[pos] += data[pos]*gain;
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}
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if(!(std::fabs(gain) > GAIN_SILENCE_THRESHOLD))
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continue;
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if(LIKELY(BufferSize-pos > 3))
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{
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ALsizei todo{(BufferSize-pos) >> 2};
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const float32x4_t gain4 = vdupq_n_f32(gain);
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do {
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const float32x4_t val4 = vld1q_f32(&data[pos]);
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float32x4_t dry4 = vld1q_f32(&dst[pos]);
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dry4 = vmlaq_f32(dry4, val4, gain4);
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vst1q_f32(&dst[pos], dry4);
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pos += 4;
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} while(--todo);
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}
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for(;pos < BufferSize;pos++)
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dst[pos] += data[pos]*gain;
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}
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}
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template<>
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void MixRow_<NEONTag>(ALfloat *OutBuffer, const ALfloat *Gains, const ALfloat (*data)[BUFFERSIZE],
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const ALsizei InChans, const ALsizei InPos, const ALsizei BufferSize)
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{
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ASSUME(InChans > 0);
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ASSUME(BufferSize > 0);
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for(ALsizei c{0};c < InChans;c++)
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{
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const ALfloat *RESTRICT src{al::assume_aligned<16>(&data[c][InPos])};
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ALsizei pos{0};
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const ALfloat gain{Gains[c]};
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if(!(std::fabs(gain) > GAIN_SILENCE_THRESHOLD))
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continue;
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if(LIKELY(BufferSize > 3))
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{
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ALsizei todo{BufferSize >> 2};
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float32x4_t gain4{vdupq_n_f32(gain)};
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do {
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const float32x4_t val4 = vld1q_f32(&src[pos]);
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float32x4_t dry4 = vld1q_f32(&OutBuffer[pos]);
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dry4 = vmlaq_f32(dry4, val4, gain4);
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vst1q_f32(&OutBuffer[pos], dry4);
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pos += 4;
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} while(--todo);
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}
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for(;pos < BufferSize;pos++)
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OutBuffer[pos] += src[pos]*gain;
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}
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}
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