135 lines
3.5 KiB
C
135 lines
3.5 KiB
C
/*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "float_dsp.h"
|
|
|
|
static void vector_fmul_c(float *dst, const float *src0, const float *src1,
|
|
int len)
|
|
{
|
|
int i;
|
|
for (i = 0; i < len; i++)
|
|
dst[i] = src0[i] * src1[i];
|
|
}
|
|
|
|
static void vector_fmac_scalar_c(float *dst, const float *src, float mul,
|
|
int len)
|
|
{
|
|
int i;
|
|
for (i = 0; i < len; i++)
|
|
dst[i] += src[i] * mul;
|
|
}
|
|
|
|
static void vector_fmul_scalar_c(float *dst, const float *src, float mul,
|
|
int len)
|
|
{
|
|
int i;
|
|
for (i = 0; i < len; i++)
|
|
dst[i] = src[i] * mul;
|
|
}
|
|
|
|
static void vector_dmul_scalar_c(double *dst, const double *src, double mul,
|
|
int len)
|
|
{
|
|
int i;
|
|
for (i = 0; i < len; i++)
|
|
dst[i] = src[i] * mul;
|
|
}
|
|
|
|
static void vector_fmul_window_c(float *dst, const float *src0,
|
|
const float *src1, const float *win, int len)
|
|
{
|
|
int i, j;
|
|
|
|
dst += len;
|
|
win += len;
|
|
src0 += len;
|
|
|
|
for (i = -len, j = len - 1; i < 0; i++, j--) {
|
|
float s0 = src0[i];
|
|
float s1 = src1[j];
|
|
float wi = win[i];
|
|
float wj = win[j];
|
|
dst[i] = s0 * wj - s1 * wi;
|
|
dst[j] = s0 * wi + s1 * wj;
|
|
}
|
|
}
|
|
|
|
static void vector_fmul_add_c(float *dst, const float *src0, const float *src1,
|
|
const float *src2, int len){
|
|
int i;
|
|
|
|
for (i = 0; i < len; i++)
|
|
dst[i] = src0[i] * src1[i] + src2[i];
|
|
}
|
|
|
|
static void vector_fmul_reverse_c(float *dst, const float *src0,
|
|
const float *src1, int len)
|
|
{
|
|
int i;
|
|
|
|
src1 += len-1;
|
|
for (i = 0; i < len; i++)
|
|
dst[i] = src0[i] * src1[-i];
|
|
}
|
|
|
|
static void butterflies_float_c(float *restrict v1, float *restrict v2,
|
|
int len)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
float t = v1[i] - v2[i];
|
|
v1[i] += v2[i];
|
|
v2[i] = t;
|
|
}
|
|
}
|
|
|
|
float avpriv_scalarproduct_float_c(const float *v1, const float *v2, int len)
|
|
{
|
|
float p = 0.0;
|
|
int i;
|
|
|
|
for (i = 0; i < len; i++)
|
|
p += v1[i] * v2[i];
|
|
|
|
return p;
|
|
}
|
|
|
|
void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
|
|
{
|
|
fdsp->vector_fmul = vector_fmul_c;
|
|
fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
|
|
fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
|
|
fdsp->vector_dmul_scalar = vector_dmul_scalar_c;
|
|
fdsp->vector_fmul_window = vector_fmul_window_c;
|
|
fdsp->vector_fmul_add = vector_fmul_add_c;
|
|
fdsp->vector_fmul_reverse = vector_fmul_reverse_c;
|
|
fdsp->butterflies_float = butterflies_float_c;
|
|
fdsp->scalarproduct_float = avpriv_scalarproduct_float_c;
|
|
|
|
#if ARCH_ARM
|
|
ff_float_dsp_init_arm(fdsp);
|
|
#elif ARCH_PPC
|
|
ff_float_dsp_init_ppc(fdsp, bit_exact);
|
|
#elif ARCH_X86
|
|
ff_float_dsp_init_x86(fdsp);
|
|
#endif
|
|
}
|