mirror of
https://github.com/godotengine/godot.git
synced 2024-12-03 09:52:18 +08:00
93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
/* Copyright (C) 2002 Jean-Marc Valin */
|
|
/**
|
|
@file ltp_sse.h
|
|
@brief Long-Term Prediction functions (SSE version)
|
|
*/
|
|
/*
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
- Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
- Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
- Neither the name of the Xiph.org Foundation nor the names of its
|
|
contributors may be used to endorse or promote products derived from
|
|
this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
|
|
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <xmmintrin.h>
|
|
|
|
#define OVERRIDE_INNER_PROD
|
|
float inner_prod(const float *a, const float *b, int len)
|
|
{
|
|
int i;
|
|
float ret;
|
|
__m128 sum = _mm_setzero_ps();
|
|
for (i=0;i<(len>>2);i+=2)
|
|
{
|
|
sum = _mm_add_ps(sum, _mm_mul_ps(_mm_loadu_ps(a+0), _mm_loadu_ps(b+0)));
|
|
sum = _mm_add_ps(sum, _mm_mul_ps(_mm_loadu_ps(a+4), _mm_loadu_ps(b+4)));
|
|
a += 8;
|
|
b += 8;
|
|
}
|
|
sum = _mm_add_ps(sum, _mm_movehl_ps(sum, sum));
|
|
sum = _mm_add_ss(sum, _mm_shuffle_ps(sum, sum, 0x55));
|
|
_mm_store_ss(&ret, sum);
|
|
return ret;
|
|
}
|
|
|
|
#define OVERRIDE_PITCH_XCORR
|
|
void pitch_xcorr(const float *_x, const float *_y, float *corr, int len, int nb_pitch, char *stack)
|
|
{
|
|
int i, offset;
|
|
VARDECL(__m128 *x);
|
|
VARDECL(__m128 *y);
|
|
int N, L;
|
|
N = len>>2;
|
|
L = nb_pitch>>2;
|
|
ALLOC(x, N, __m128);
|
|
ALLOC(y, N+L, __m128);
|
|
for (i=0;i<N;i++)
|
|
x[i] = _mm_loadu_ps(_x+(i<<2));
|
|
for (offset=0;offset<4;offset++)
|
|
{
|
|
for (i=0;i<N+L;i++)
|
|
y[i] = _mm_loadu_ps(_y+(i<<2)+offset);
|
|
for (i=0;i<L;i++)
|
|
{
|
|
int j;
|
|
__m128 sum, *xx, *yy;
|
|
sum = _mm_setzero_ps();
|
|
yy = y+i;
|
|
xx = x;
|
|
for (j=0;j<N;j+=2)
|
|
{
|
|
sum = _mm_add_ps(sum, _mm_mul_ps(xx[0], yy[0]));
|
|
sum = _mm_add_ps(sum, _mm_mul_ps(xx[1], yy[1]));
|
|
xx += 2;
|
|
yy += 2;
|
|
}
|
|
sum = _mm_add_ps(sum, _mm_movehl_ps(sum, sum));
|
|
sum = _mm_add_ss(sum, _mm_shuffle_ps(sum, sum, 0x55));
|
|
_mm_store_ss(corr+nb_pitch-1-(i<<2)-offset, sum);
|
|
}
|
|
}
|
|
}
|