aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* Format Conversion Utils
* Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* 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 "avcodec.h"
#include "fmtconvert.h"
#include "libavutil/common.h"
static void int32_to_float_fmul_scalar_c(float *dst, const int32_t *src,
float mul, int len)
{
int i;
for(i=0; i<len; i++)
dst[i] = src[i] * mul;
}
static void int32_to_float_c(float *dst, const int32_t *src, intptr_t len)
{
int i;
for (i = 0; i < len; i++)
dst[i] = (float)src[i];
}
static void int32_to_float_fmul_array8_c(FmtConvertContext *c, float *dst,
const int32_t *src, const float *mul,
int len)
{
int i;
for (i = 0; i < len; i += 8)
c->int32_to_float_fmul_scalar(&dst[i], &src[i], *mul++, 8);
}
av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx)
{
c->int32_to_float = int32_to_float_c;
c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_c;
c->int32_to_float_fmul_array8 = int32_to_float_fmul_array8_c;
if (ARCH_AARCH64)
ff_fmt_convert_init_aarch64(c, avctx);
if (ARCH_ARM)
ff_fmt_convert_init_arm(c, avctx);
if (ARCH_PPC)
ff_fmt_convert_init_ppc(c, avctx);
if (ARCH_X86)
ff_fmt_convert_init_x86(c, avctx);
if (HAVE_MIPSFPU)
ff_fmt_convert_init_mips(c);
}
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