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Rename ffmpeg-4.2-fit to ffmpeg-4-fit

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winlin 2021-03-02 17:48:40 +08:00
parent b19074721c
commit 27712fdda7
720 changed files with 14 additions and 14 deletions
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164
trunk/3rdparty/ffmpeg-4-fit/libavutil/float_dsp.c vendored Normal file
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/*
* Copyright 2005 Balatoni Denes
* Copyright 2006 Loren Merritt
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "attributes.h"
#include "float_dsp.h"
#include "mem.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_dmul_c(double *dst, const double *src0, const double *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_dmac_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_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 *av_restrict v1, float *av_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;
}
av_cold AVFloatDSPContext *avpriv_float_dsp_alloc(int bit_exact)
{
AVFloatDSPContext *fdsp = av_mallocz(sizeof(AVFloatDSPContext));
if (!fdsp)
return NULL;
fdsp->vector_fmul = vector_fmul_c;
fdsp->vector_dmul = vector_dmul_c;
fdsp->vector_fmac_scalar = vector_fmac_scalar_c;
fdsp->vector_fmul_scalar = vector_fmul_scalar_c;
fdsp->vector_dmac_scalar = vector_dmac_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_AARCH64)
ff_float_dsp_init_aarch64(fdsp);
if (ARCH_ARM)
ff_float_dsp_init_arm(fdsp);
if (ARCH_PPC)
ff_float_dsp_init_ppc(fdsp, bit_exact);
if (ARCH_X86)
ff_float_dsp_init_x86(fdsp);
if (ARCH_MIPS)
ff_float_dsp_init_mips(fdsp);
return fdsp;
}