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PATH: usr / include / ffmpeg / libavutil

/*
 * 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_AARCH64
#   include "aarch64/bswap.h"
#elif ARCH_ARM
#   include "arm/bswap.h"
#elif ARCH_AVR32
#   include "avr32/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 */

[-] dict.h [edit]
[-] md5.h [edit]
[-] file.h [edit]
[-] version.h [edit]
[-] eval.h [edit]
[-] aes.h [edit]
[-] sha512.h [edit]
[-] replaygain.h [edit]
[-] samplefmt.h [edit]
[-] threadmessage.h [edit]
[-] motion_vector.h [edit]
[-] pixdesc.h [edit]
[-] old_pix_fmts.h [edit]
[-] intreadwrite.h [edit]
[-] tea.h [edit]
[+] ..
[-] base64.h [edit]
[-] stereo3d.h [edit]
[-] avassert.h [edit]
[-] opt.h [edit]
[-] mem.h [edit]
[-] parseutils.h [edit]
[-] camellia.h [edit]
[-] random_seed.h [edit]
[-] cast5.h [edit]
[-] bswap.h [edit]
[-] pixelutils.h [edit]
[-] attributes.h [edit]
[-] log.h [edit]
[-] avstring.h [edit]
[-] imgutils.h [edit]
[-] adler32.h [edit]
[-] crc.h [edit]
[-] time.h [edit]
[-] audio_fifo.h [edit]
[-] hash.h [edit]
[-] intfloat.h [edit]
[-] timecode.h [edit]
[-] lzo.h [edit]
[-] ffversion.h [edit]
[-] frame.h [edit]
[-] hmac.h [edit]
[-] cpu.h [edit]
[-] lfg.h [edit]
[-] bprint.h [edit]
[-] xtea.h [edit]
[-] murmur3.h [edit]
[-] rational.h [edit]
[-] avconfig.h [edit]
[-] downmix_info.h [edit]
[-] display.h [edit]
[-] error.h [edit]
[-] twofish.h [edit]
[-] pixfmt.h [edit]
[-] common.h [edit]
[-] avutil.h [edit]
[-] audioconvert.h [edit]
[-] channel_layout.h [edit]
[-] macros.h [edit]
[-] timestamp.h [edit]
[-] mathematics.h [edit]
[-] sha.h [edit]
[-] ripemd.h [edit]
[-] blowfish.h [edit]
[-] fifo.h [edit]
[-] buffer.h [edit]