mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-15 11:44:49 +00:00
8bc7fe4daf
* qatar/master: doxygen: misc consistency, spelling and wording fixes vcr1: drop unnecessary emms_c() calls without MMX code Replace all uses of av_close_input_file() with avformat_close_input(). lavf: add avformat_close_input(). lavf: deprecate av_close_input_stream(). lavf doxy: add some basic demuxing documentation. lavf doxy: add some general lavf information. lavf doxy: add misc utility functions to a group. lavf doxy: add av_guess_codec/format to the encoding group. lavf doxy: add core functions to a doxy group. Add basic libavdevice documentation. lavc: convert error_recognition to err_recognition. avconv: update -map option help text x86: Require 7 registers for the cabac asm x86: bswap: remove test for bswap instruction bswap: make generic implementation more compiler-friendly h264: remove useless cast proresdec: fix decode_slice() prototype Conflicts: configure doc/APIchanges ffprobe.c libavcodec/avcodec.h libavcodec/celp_math.h libavcodec/h264.c libavfilter/src_movie.c libavformat/anm.c libavformat/avformat.h libavformat/version.h libavutil/avstring.h libavutil/bswap.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
/*
|
|
* copyright (c) 2006 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* byte swapping routines
|
|
*/
|
|
|
|
#ifndef AVUTIL_BSWAP_H
|
|
#define AVUTIL_BSWAP_H
|
|
|
|
#include <stdint.h>
|
|
#include "libavutil/avconfig.h"
|
|
#include "attributes.h"
|
|
|
|
#ifdef HAVE_AV_CONFIG_H
|
|
|
|
#include "config.h"
|
|
|
|
#if ARCH_ARM
|
|
# include "arm/bswap.h"
|
|
#elif ARCH_AVR32
|
|
# include "avr32/bswap.h"
|
|
#elif ARCH_BFIN
|
|
# include "bfin/bswap.h"
|
|
#elif ARCH_SH4
|
|
# include "sh4/bswap.h"
|
|
#elif ARCH_X86
|
|
# include "x86/bswap.h"
|
|
#endif
|
|
|
|
#endif /* HAVE_AV_CONFIG_H */
|
|
|
|
#define AV_BSWAP16C(x) (((x) << 8 & 0xff00) | ((x) >> 8 & 0x00ff))
|
|
#define AV_BSWAP32C(x) (AV_BSWAP16C(x) << 16 | AV_BSWAP16C((x) >> 16))
|
|
#define AV_BSWAP64C(x) (AV_BSWAP32C(x) << 32 | AV_BSWAP32C((x) >> 32))
|
|
|
|
#define AV_BSWAPC(s, x) AV_BSWAP##s##C(x)
|
|
|
|
#ifndef av_bswap16
|
|
static av_always_inline av_const uint16_t av_bswap16(uint16_t x)
|
|
{
|
|
x= (x>>8) | (x<<8);
|
|
return x;
|
|
}
|
|
#endif
|
|
|
|
#ifndef av_bswap32
|
|
static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
|
|
{
|
|
return AV_BSWAP32C(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef av_bswap64
|
|
static inline uint64_t av_const av_bswap64(uint64_t x)
|
|
{
|
|
return (uint64_t)av_bswap32(x) << 32 | av_bswap32(x >> 32);
|
|
}
|
|
#endif
|
|
|
|
// be2ne ... big-endian to native-endian
|
|
// le2ne ... little-endian to native-endian
|
|
|
|
#if AV_HAVE_BIGENDIAN
|
|
#define av_be2ne16(x) (x)
|
|
#define av_be2ne32(x) (x)
|
|
#define av_be2ne64(x) (x)
|
|
#define av_le2ne16(x) av_bswap16(x)
|
|
#define av_le2ne32(x) av_bswap32(x)
|
|
#define av_le2ne64(x) av_bswap64(x)
|
|
#define AV_BE2NEC(s, x) (x)
|
|
#define AV_LE2NEC(s, x) AV_BSWAPC(s, x)
|
|
#else
|
|
#define av_be2ne16(x) av_bswap16(x)
|
|
#define av_be2ne32(x) av_bswap32(x)
|
|
#define av_be2ne64(x) av_bswap64(x)
|
|
#define av_le2ne16(x) (x)
|
|
#define av_le2ne32(x) (x)
|
|
#define av_le2ne64(x) (x)
|
|
#define AV_BE2NEC(s, x) AV_BSWAPC(s, x)
|
|
#define AV_LE2NEC(s, x) (x)
|
|
#endif
|
|
|
|
#define AV_BE2NE16C(x) AV_BE2NEC(16, x)
|
|
#define AV_BE2NE32C(x) AV_BE2NEC(32, x)
|
|
#define AV_BE2NE64C(x) AV_BE2NEC(64, x)
|
|
#define AV_LE2NE16C(x) AV_LE2NEC(16, x)
|
|
#define AV_LE2NE32C(x) AV_LE2NEC(32, x)
|
|
#define AV_LE2NE64C(x) AV_LE2NEC(64, x)
|
|
|
|
#endif /* AVUTIL_BSWAP_H */
|