98 lines
3.2 KiB
C
98 lines
3.2 KiB
C
/**
|
|
* OpenAL cross platform audio library, SSE3 mixer functions
|
|
*
|
|
* Copyright (C) 2014 by Timothy Arceri <t_arceri@yahoo.com.au>.
|
|
* Copyright (C) 2015 by Chris Robinson <chris.kcat@gmail.com>.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
* Or go to http://www.gnu.org/copyleft/lgpl.html
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <xmmintrin.h>
|
|
#include <emmintrin.h>
|
|
#include <pmmintrin.h>
|
|
|
|
#include "alu.h"
|
|
#include "mixer_defs.h"
|
|
|
|
|
|
const ALfloat *Resample_fir4_32_SSE3(const InterpState* UNUSED(state),
|
|
const ALfloat *restrict src, ALsizei frac, ALint increment,
|
|
ALfloat *restrict dst, ALsizei numsamples)
|
|
{
|
|
const __m128i increment4 = _mm_set1_epi32(increment*4);
|
|
const __m128i fracMask4 = _mm_set1_epi32(FRACTIONMASK);
|
|
union { alignas(16) ALint i[4]; float f[4]; } pos_;
|
|
union { alignas(16) ALsizei i[4]; float f[4]; } frac_;
|
|
__m128i frac4, pos4;
|
|
ALint pos;
|
|
ALsizei i;
|
|
|
|
InitiatePositionArrays(frac, increment, frac_.i, pos_.i, 4);
|
|
|
|
frac4 = _mm_castps_si128(_mm_load_ps(frac_.f));
|
|
pos4 = _mm_castps_si128(_mm_load_ps(pos_.f));
|
|
|
|
--src;
|
|
for(i = 0;numsamples-i > 3;i += 4)
|
|
{
|
|
const __m128 val0 = _mm_loadu_ps(&src[pos_.i[0]]);
|
|
const __m128 val1 = _mm_loadu_ps(&src[pos_.i[1]]);
|
|
const __m128 val2 = _mm_loadu_ps(&src[pos_.i[2]]);
|
|
const __m128 val3 = _mm_loadu_ps(&src[pos_.i[3]]);
|
|
__m128 k0 = _mm_load_ps(sinc4Tab[frac_.i[0]]);
|
|
__m128 k1 = _mm_load_ps(sinc4Tab[frac_.i[1]]);
|
|
__m128 k2 = _mm_load_ps(sinc4Tab[frac_.i[2]]);
|
|
__m128 k3 = _mm_load_ps(sinc4Tab[frac_.i[3]]);
|
|
__m128 out;
|
|
|
|
k0 = _mm_mul_ps(k0, val0);
|
|
k1 = _mm_mul_ps(k1, val1);
|
|
k2 = _mm_mul_ps(k2, val2);
|
|
k3 = _mm_mul_ps(k3, val3);
|
|
k0 = _mm_hadd_ps(k0, k1);
|
|
k2 = _mm_hadd_ps(k2, k3);
|
|
out = _mm_hadd_ps(k0, k2);
|
|
|
|
_mm_store_ps(&dst[i], out);
|
|
|
|
frac4 = _mm_add_epi32(frac4, increment4);
|
|
pos4 = _mm_add_epi32(pos4, _mm_srli_epi32(frac4, FRACTIONBITS));
|
|
frac4 = _mm_and_si128(frac4, fracMask4);
|
|
|
|
_mm_store_ps(pos_.f, _mm_castsi128_ps(pos4));
|
|
_mm_store_ps(frac_.f, _mm_castsi128_ps(frac4));
|
|
}
|
|
|
|
/* NOTE: These four elements represent the position *after* the last four
|
|
* samples, so the lowest element is the next position to resample.
|
|
*/
|
|
pos = pos_.i[0];
|
|
frac = frac_.i[0];
|
|
|
|
for(;i < numsamples;i++)
|
|
{
|
|
dst[i] = resample_fir4(src[pos], src[pos+1], src[pos+2], src[pos+3], frac);
|
|
|
|
frac += increment;
|
|
pos += frac>>FRACTIONBITS;
|
|
frac &= FRACTIONMASK;
|
|
}
|
|
return dst;
|
|
}
|