Rename Alc to alc

1 files changed, 262 insertions, 0 deletions

diff --git a/alc/mixer/mixer_sse.cpp b/alc/mixer/mixer_sse.cpp
new file mode 100644
index 00000000..b763fdbd
--- /dev/null
+++ b/alc/mixer/mixer_sse.cpp
@@ -0,0 +1,262 @@
+#include "config.h"
+
+#include <xmmintrin.h>
+
+#include <limits>
+
+#include "AL/al.h"
+#include "AL/alc.h"
+#include "alcmain.h"
+#include "alu.h"
+
+#include "alSource.h"
+#include "alAuxEffectSlot.h"
+#include "defs.h"
+#include "hrtfbase.h"
+
+
+template<>
+const ALfloat *Resample_<BSincTag,SSETag>(const InterpState *state, const ALfloat *RESTRICT src,
+    ALsizei frac, ALint increment, ALfloat *RESTRICT dst, ALsizei dstlen)
+{
+    const ALfloat *const filter{state->bsinc.filter};
+    const __m128 sf4{_mm_set1_ps(state->bsinc.sf)};
+    const ALsizei m{state->bsinc.m};
+
+    ASSUME(m > 0);
+    ASSUME(dstlen > 0);
+    ASSUME(increment > 0);
+    ASSUME(frac >= 0);
+
+    src -= state->bsinc.l;
+    for(ALsizei i{0};i < dstlen;i++)
+    {
+        // Calculate the phase index and factor.
+#define FRAC_PHASE_BITDIFF (FRACTIONBITS-BSINC_PHASE_BITS)
+        const ALsizei pi{frac >> FRAC_PHASE_BITDIFF};
+        const ALfloat pf{(frac & ((1<<FRAC_PHASE_BITDIFF)-1)) * (1.0f/(1<<FRAC_PHASE_BITDIFF))};
+#undef FRAC_PHASE_BITDIFF
+
+        ALsizei offset{m*pi*4};
+        const __m128 *fil{reinterpret_cast<const __m128*>(filter + offset)}; offset += m;
+        const __m128 *scd{reinterpret_cast<const __m128*>(filter + offset)}; offset += m;
+        const __m128 *phd{reinterpret_cast<const __m128*>(filter + offset)}; offset += m;
+        const __m128 *spd{reinterpret_cast<const __m128*>(filter + offset)};
+
+        // Apply the scale and phase interpolated filter.
+        __m128 r4{_mm_setzero_ps()};
+        {
+            const ALsizei count{m >> 2};
+            const __m128 pf4{_mm_set1_ps(pf)};
+
+            ASSUME(count > 0);
+
+#define MLA4(x, y, z) _mm_add_ps(x, _mm_mul_ps(y, z))
+            for(ALsizei j{0};j < count;j++)
+            {
+                /* f = ((fil + sf*scd) + pf*(phd + sf*spd)) */
+                const __m128 f4 = MLA4(
+                    MLA4(fil[j], sf4, scd[j]),
+                    pf4, MLA4(phd[j], sf4, spd[j])
+                );
+                /* r += f*src */
+                r4 = MLA4(r4, f4, _mm_loadu_ps(&src[j*4]));
+            }
+#undef MLA4
+        }
+        r4 = _mm_add_ps(r4, _mm_shuffle_ps(r4, r4, _MM_SHUFFLE(0, 1, 2, 3)));
+        r4 = _mm_add_ps(r4, _mm_movehl_ps(r4, r4));
+        dst[i] = _mm_cvtss_f32(r4);
+
+        frac += increment;
+        src  += frac>>FRACTIONBITS;
+        frac &= FRACTIONMASK;
+    }
+    return dst;
+}
+
+
+static inline void ApplyCoeffs(ALsizei Offset, float2 *RESTRICT Values, const ALsizei IrSize,
+    const HrirArray<ALfloat> &Coeffs, const ALfloat left, const ALfloat right)
+{
+    const __m128 lrlr{_mm_setr_ps(left, right, left, right)};
+
+    ASSUME(IrSize >= 2);
+
+    if((Offset&1))
+    {
+        __m128 imp0, imp1;
+        __m128 coeffs{_mm_load_ps(&Coeffs[0][0])};
+        __m128 vals{_mm_loadl_pi(_mm_setzero_ps(), reinterpret_cast<__m64*>(&Values[0][0]))};
+        imp0 = _mm_mul_ps(lrlr, coeffs);
+        vals = _mm_add_ps(imp0, vals);
+        _mm_storel_pi(reinterpret_cast<__m64*>(&Values[0][0]), vals);
+        ALsizei i{1};
+        for(;i < IrSize-1;i += 2)
+        {
+            coeffs = _mm_load_ps(&Coeffs[i+1][0]);
+            vals = _mm_load_ps(&Values[i][0]);
+            imp1 = _mm_mul_ps(lrlr, coeffs);
+            imp0 = _mm_shuffle_ps(imp0, imp1, _MM_SHUFFLE(1, 0, 3, 2));
+            vals = _mm_add_ps(imp0, vals);
+            _mm_store_ps(&Values[i][0], vals);
+            imp0 = imp1;
+        }
+        vals = _mm_loadl_pi(vals, reinterpret_cast<__m64*>(&Values[i][0]));
+        imp0 = _mm_movehl_ps(imp0, imp0);
+        vals = _mm_add_ps(imp0, vals);
+        _mm_storel_pi(reinterpret_cast<__m64*>(&Values[i][0]), vals);
+    }
+    else
+    {
+        for(ALsizei i{0};i < IrSize;i += 2)
+        {
+            __m128 coeffs{_mm_load_ps(&Coeffs[i][0])};
+            __m128 vals{_mm_load_ps(&Values[i][0])};
+            vals = _mm_add_ps(vals, _mm_mul_ps(lrlr, coeffs));
+            _mm_store_ps(&Values[i][0], vals);
+        }
+    }
+}
+
+template<>
+void MixHrtf_<SSETag>(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
+    const ALfloat *InSamples, float2 *AccumSamples, const ALsizei OutPos, const ALsizei IrSize,
+    MixHrtfFilter *hrtfparams, const ALsizei BufferSize)
+{
+    MixHrtfBase<ApplyCoeffs>(LeftOut, RightOut, InSamples, AccumSamples, OutPos, IrSize,
+        hrtfparams, BufferSize);
+}
+
+template<>
+void MixHrtfBlend_<SSETag>(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
+    const ALfloat *InSamples, float2 *AccumSamples, const ALsizei OutPos, const ALsizei IrSize,
+    const HrtfFilter *oldparams, MixHrtfFilter *newparams, const ALsizei BufferSize)
+{
+    MixHrtfBlendBase<ApplyCoeffs>(LeftOut, RightOut, InSamples, AccumSamples, OutPos, IrSize,
+        oldparams, newparams, BufferSize);
+}
+
+template<>
+void MixDirectHrtf_<SSETag>(FloatBufferLine &LeftOut, FloatBufferLine &RightOut,
+    const al::span<const FloatBufferLine> InSamples, float2 *AccumSamples, DirectHrtfState *State,
+    const ALsizei BufferSize)
+{
+    MixDirectHrtfBase<ApplyCoeffs>(LeftOut, RightOut, InSamples, AccumSamples, State, BufferSize);
+}
+
+
+template<>
+void Mix_<SSETag>(const ALfloat *data, const al::span<FloatBufferLine> OutBuffer,
+    ALfloat *CurrentGains, const ALfloat *TargetGains, const ALsizei Counter, const ALsizei OutPos,
+    const ALsizei BufferSize)
+{
+    ASSUME(BufferSize > 0);
+
+    const ALfloat delta{(Counter > 0) ? 1.0f / static_cast<ALfloat>(Counter) : 0.0f};
+    for(FloatBufferLine &output : OutBuffer)
+    {
+        ALfloat *RESTRICT dst{al::assume_aligned<16>(output.data()+OutPos)};
+        ALfloat gain{*CurrentGains};
+        const ALfloat diff{*TargetGains - gain};
+
+        ALsizei pos{0};
+        if(std::fabs(diff) > std::numeric_limits<float>::epsilon())
+        {
+            ALsizei minsize{mini(BufferSize, Counter)};
+            const ALfloat step{diff * delta};
+            ALfloat step_count{0.0f};
+            /* Mix with applying gain steps in aligned multiples of 4. */
+            if(LIKELY(minsize > 3))
+            {
+                const __m128 four4{_mm_set1_ps(4.0f)};
+                const __m128 step4{_mm_set1_ps(step)};
+                const __m128 gain4{_mm_set1_ps(gain)};
+                __m128 step_count4{_mm_setr_ps(0.0f, 1.0f, 2.0f, 3.0f)};
+                ALsizei todo{minsize >> 2};
+                do {
+                    const __m128 val4{_mm_load_ps(&data[pos])};
+                    __m128 dry4{_mm_load_ps(&dst[pos])};
+#define MLA4(x, y, z) _mm_add_ps(x, _mm_mul_ps(y, z))
+                    /* dry += val * (gain + step*step_count) */
+                    dry4 = MLA4(dry4, val4, MLA4(gain4, step4, step_count4));
+#undef MLA4
+                    _mm_store_ps(&dst[pos], dry4);
+                    step_count4 = _mm_add_ps(step_count4, four4);
+                    pos += 4;
+                } while(--todo);
+                /* NOTE: step_count4 now represents the next four counts after
+                 * the last four mixed samples, so the lowest element
+                 * represents the next step count to apply.
+                 */
+                step_count = _mm_cvtss_f32(step_count4);
+            }
+            /* Mix with applying left over gain steps that aren't aligned multiples of 4. */
+            for(;pos < minsize;pos++)
+            {
+                dst[pos] += data[pos]*(gain + step*step_count);
+                step_count += 1.0f;
+            }
+            if(pos == Counter)
+                gain = *TargetGains;
+            else
+                gain += step*step_count;
+            *CurrentGains = gain;
+
+            /* Mix until pos is aligned with 4 or the mix is done. */
+            minsize = mini(BufferSize, (pos+3)&~3);
+            for(;pos < minsize;pos++)
+                dst[pos] += data[pos]*gain;
+        }
+        ++CurrentGains;
+        ++TargetGains;
+
+        if(!(std::fabs(gain) > GAIN_SILENCE_THRESHOLD))
+            continue;
+        if(LIKELY(BufferSize-pos > 3))
+        {
+            ALsizei todo{(BufferSize-pos) >> 2};
+            const __m128 gain4{_mm_set1_ps(gain)};
+            do {
+                const __m128 val4{_mm_load_ps(&data[pos])};
+                __m128 dry4{_mm_load_ps(&dst[pos])};
+                dry4 = _mm_add_ps(dry4, _mm_mul_ps(val4, gain4));
+                _mm_store_ps(&dst[pos], dry4);
+                pos += 4;
+            } while(--todo);
+        }
+        for(;pos < BufferSize;pos++)
+            dst[pos] += data[pos]*gain;
+    }
+}
+
+template<>
+void MixRow_<SSETag>(FloatBufferLine &OutBuffer, const ALfloat *Gains,
+    const al::span<const FloatBufferLine> InSamples, const ALsizei InPos, const ALsizei BufferSize)
+{
+    ASSUME(BufferSize > 0);
+
+    for(const FloatBufferLine &input : InSamples)
+    {
+        const ALfloat *RESTRICT src{al::assume_aligned<16>(input.data()+InPos)};
+        const ALfloat gain{*(Gains++)};
+        if(!(std::fabs(gain) > GAIN_SILENCE_THRESHOLD))
+            continue;
+
+        ALsizei pos{0};
+        if(LIKELY(BufferSize > 3))
+        {
+            ALsizei todo{BufferSize >> 2};
+            const __m128 gain4 = _mm_set1_ps(gain);
+            do {
+                const __m128 val4{_mm_load_ps(&src[pos])};
+                __m128 dry4{_mm_load_ps(&OutBuffer[pos])};
+                dry4 = _mm_add_ps(dry4, _mm_mul_ps(val4, gain4));
+                _mm_store_ps(&OutBuffer[pos], dry4);
+                pos += 4;
+            } while(--todo);
+        }
+        for(;pos < BufferSize;pos++)
+            OutBuffer[pos] += src[pos]*gain;
+    }
+}