chromium/third_party/ffmpeg/libavutil/bswap.h

/*
 * copyright (c) 2006 Michael Niedermayer <[email protected]>
 *
 * 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_RISCV
#   include "riscv/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) …
#define AV_BSWAP32C(x) …
#define AV_BSWAP64C(x) …

#define AV_BSWAPC(s, x) …

#ifndef av_bswap16
static av_always_inline av_const uint16_t av_bswap16(uint16_t 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 …
#define av_be2ne32 …
#define av_be2ne64 …
#define av_le2ne16 …
#define av_le2ne32 …
#define av_le2ne64 …
#define AV_BE2NEC …
#define AV_LE2NEC …
#else
#define av_be2ne16(x) …
#define av_be2ne32(x) …
#define av_be2ne64(x) …
#define av_le2ne16(x) …
#define av_le2ne32(x) …
#define av_le2ne64(x) …
#define AV_BE2NEC(s, x) …
#define AV_LE2NEC(s, x) …
#endif

#define AV_BE2NE16C(x) …
#define AV_BE2NE32C(x) …
#define AV_BE2NE64C(x) …
#define AV_LE2NE16C(x) …
#define AV_LE2NE32C(x) …
#define AV_LE2NE64C(x) …

#endif /* AVUTIL_BSWAP_H */