mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
5c17377e28
* commit 'd74a8cb7e42f703be5796eeb485f06af710ae8ca': fmtconvert: drop unused functions Conflicts: libavcodec/arm/fmtconvert_vfp_armv6.S libavcodec/x86/fmtconvert.asm libavcodec/x86/fmtconvert_init.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/*
|
|
* 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_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_fmul_scalar = int32_to_float_fmul_scalar_c;
|
|
c->int32_to_float_fmul_array8 = int32_to_float_fmul_array8_c;
|
|
|
|
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);
|
|
}
|
|
|
|
/* ffdshow custom code */
|
|
void float_interleave(float *dst, const float **src, long len, int channels)
|
|
{
|
|
int i,j,c;
|
|
if(channels==2){
|
|
for(i=0; i<len; i++){
|
|
dst[2*i] = src[0][i] / 32768.0f;
|
|
dst[2*i+1] = src[1][i] / 32768.0f;
|
|
}
|
|
}else{
|
|
for(c=0; c<channels; c++)
|
|
for(i=0, j=c; i<len; i++, j+=channels)
|
|
dst[j] = src[c][i] / 32768.0f;
|
|
}
|
|
}
|
|
|
|
void float_interleave_noscale(float *dst, const float **src, long len, int channels)
|
|
{
|
|
int i,j,c;
|
|
if(channels==2){
|
|
for(i=0; i<len; i++){
|
|
dst[2*i] = src[0][i];
|
|
dst[2*i+1] = src[1][i];
|
|
}
|
|
}else{
|
|
for(c=0; c<channels; c++)
|
|
for(i=0, j=c; i<len; i++, j+=channels)
|
|
dst[j] = src[c][i];
|
|
}
|
|
}
|