mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-28 20:53:54 +02:00
e7ea5e3d8d
Not all compilers claiming to be gcc support this attribute. Originally committed as revision 19453 to svn://svn.ffmpeg.org/ffmpeg/trunk
269 lines
8.1 KiB
C
269 lines
8.1 KiB
C
/*
|
|
* 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
|
|
*/
|
|
|
|
#ifndef AVUTIL_INTREADWRITE_H
|
|
#define AVUTIL_INTREADWRITE_H
|
|
|
|
#include <stdint.h>
|
|
#include "config.h"
|
|
#include "bswap.h"
|
|
|
|
/*
|
|
* Arch-specific headers can provide any combination of
|
|
* AV_[RW][BLN](16|32|64) macros. Preprocessor symbols must be
|
|
* defined, even if these are implemented as inline functions.
|
|
*/
|
|
|
|
#if ARCH_ARM
|
|
# include "arm/intreadwrite.h"
|
|
#elif ARCH_MIPS
|
|
# include "mips/intreadwrite.h"
|
|
#elif ARCH_PPC
|
|
# include "ppc/intreadwrite.h"
|
|
#endif
|
|
|
|
/*
|
|
* Define AV_[RW]N helper macros to simplify definitions not provided
|
|
* by per-arch headers.
|
|
*/
|
|
|
|
#if HAVE_ATTRIBUTE_PACKED
|
|
|
|
struct unaligned_64 { uint64_t l; } __attribute__((packed));
|
|
struct unaligned_32 { uint32_t l; } __attribute__((packed));
|
|
struct unaligned_16 { uint16_t l; } __attribute__((packed));
|
|
|
|
# define AV_RN(s, p) (((const struct unaligned_##s *) (p))->l)
|
|
# define AV_WN(s, p, v) (((struct unaligned_##s *) (p))->l) = (v)
|
|
|
|
#elif defined(__DECC)
|
|
|
|
# define AV_RN(s, p) (*((const __unaligned uint##s##_t*)(p)))
|
|
# define AV_WN(s, p, v) *((__unaligned uint##s##_t*)(p)) = (v)
|
|
|
|
#elif HAVE_FAST_UNALIGNED
|
|
|
|
# define AV_RN(s, p) (*((const uint##s##_t*)(p)))
|
|
# define AV_WN(s, p, v) *((uint##s##_t*)(p)) = (v)
|
|
|
|
#else
|
|
|
|
#ifndef AV_RB16
|
|
#define AV_RB16(x) ((((const uint8_t*)(x))[0] << 8) | \
|
|
((const uint8_t*)(x))[1])
|
|
#endif
|
|
#ifndef AV_WB16
|
|
#define AV_WB16(p, d) do { \
|
|
((uint8_t*)(p))[1] = (d); \
|
|
((uint8_t*)(p))[0] = (d)>>8; } while(0)
|
|
#endif
|
|
|
|
#ifndef AV_RL16
|
|
#define AV_RL16(x) ((((const uint8_t*)(x))[1] << 8) | \
|
|
((const uint8_t*)(x))[0])
|
|
#endif
|
|
#ifndef AV_WL16
|
|
#define AV_WL16(p, d) do { \
|
|
((uint8_t*)(p))[0] = (d); \
|
|
((uint8_t*)(p))[1] = (d)>>8; } while(0)
|
|
#endif
|
|
|
|
#ifndef AV_RB32
|
|
#define AV_RB32(x) ((((const uint8_t*)(x))[0] << 24) | \
|
|
(((const uint8_t*)(x))[1] << 16) | \
|
|
(((const uint8_t*)(x))[2] << 8) | \
|
|
((const uint8_t*)(x))[3])
|
|
#endif
|
|
#ifndef AV_WB32
|
|
#define AV_WB32(p, d) do { \
|
|
((uint8_t*)(p))[3] = (d); \
|
|
((uint8_t*)(p))[2] = (d)>>8; \
|
|
((uint8_t*)(p))[1] = (d)>>16; \
|
|
((uint8_t*)(p))[0] = (d)>>24; } while(0)
|
|
#endif
|
|
|
|
#ifndef AV_RL32
|
|
#define AV_RL32(x) ((((const uint8_t*)(x))[3] << 24) | \
|
|
(((const uint8_t*)(x))[2] << 16) | \
|
|
(((const uint8_t*)(x))[1] << 8) | \
|
|
((const uint8_t*)(x))[0])
|
|
#endif
|
|
#ifndef AV_WL32
|
|
#define AV_WL32(p, d) do { \
|
|
((uint8_t*)(p))[0] = (d); \
|
|
((uint8_t*)(p))[1] = (d)>>8; \
|
|
((uint8_t*)(p))[2] = (d)>>16; \
|
|
((uint8_t*)(p))[3] = (d)>>24; } while(0)
|
|
#endif
|
|
|
|
#ifndef AV_RB64
|
|
#define AV_RB64(x) (((uint64_t)((const uint8_t*)(x))[0] << 56) | \
|
|
((uint64_t)((const uint8_t*)(x))[1] << 48) | \
|
|
((uint64_t)((const uint8_t*)(x))[2] << 40) | \
|
|
((uint64_t)((const uint8_t*)(x))[3] << 32) | \
|
|
((uint64_t)((const uint8_t*)(x))[4] << 24) | \
|
|
((uint64_t)((const uint8_t*)(x))[5] << 16) | \
|
|
((uint64_t)((const uint8_t*)(x))[6] << 8) | \
|
|
(uint64_t)((const uint8_t*)(x))[7])
|
|
#endif
|
|
#ifndef AV_WB64
|
|
#define AV_WB64(p, d) do { \
|
|
((uint8_t*)(p))[7] = (d); \
|
|
((uint8_t*)(p))[6] = (d)>>8; \
|
|
((uint8_t*)(p))[5] = (d)>>16; \
|
|
((uint8_t*)(p))[4] = (d)>>24; \
|
|
((uint8_t*)(p))[3] = (d)>>32; \
|
|
((uint8_t*)(p))[2] = (d)>>40; \
|
|
((uint8_t*)(p))[1] = (d)>>48; \
|
|
((uint8_t*)(p))[0] = (d)>>56; } while(0)
|
|
#endif
|
|
|
|
#ifndef AV_RL64
|
|
#define AV_RL64(x) (((uint64_t)((const uint8_t*)(x))[7] << 56) | \
|
|
((uint64_t)((const uint8_t*)(x))[6] << 48) | \
|
|
((uint64_t)((const uint8_t*)(x))[5] << 40) | \
|
|
((uint64_t)((const uint8_t*)(x))[4] << 32) | \
|
|
((uint64_t)((const uint8_t*)(x))[3] << 24) | \
|
|
((uint64_t)((const uint8_t*)(x))[2] << 16) | \
|
|
((uint64_t)((const uint8_t*)(x))[1] << 8) | \
|
|
(uint64_t)((const uint8_t*)(x))[0])
|
|
#endif
|
|
#ifndef AV_WL64
|
|
#define AV_WL64(p, d) do { \
|
|
((uint8_t*)(p))[0] = (d); \
|
|
((uint8_t*)(p))[1] = (d)>>8; \
|
|
((uint8_t*)(p))[2] = (d)>>16; \
|
|
((uint8_t*)(p))[3] = (d)>>24; \
|
|
((uint8_t*)(p))[4] = (d)>>32; \
|
|
((uint8_t*)(p))[5] = (d)>>40; \
|
|
((uint8_t*)(p))[6] = (d)>>48; \
|
|
((uint8_t*)(p))[7] = (d)>>56; } while(0)
|
|
#endif
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
# define AV_RN(s, p) AV_RB##s(p)
|
|
# define AV_WN(s, p, v) AV_WB##s(p, v)
|
|
#else
|
|
# define AV_RN(s, p) AV_RL##s(p)
|
|
# define AV_WN(s, p, v) AV_WL##s(p, v)
|
|
#endif
|
|
|
|
#endif /* HAVE_FAST_UNALIGNED */
|
|
|
|
#ifndef AV_RN16
|
|
# define AV_RN16(p) AV_RN(16, p)
|
|
#endif
|
|
|
|
#ifndef AV_RN32
|
|
# define AV_RN32(p) AV_RN(32, p)
|
|
#endif
|
|
|
|
#ifndef AV_RN64
|
|
# define AV_RN64(p) AV_RN(64, p)
|
|
#endif
|
|
|
|
#ifndef AV_WN16
|
|
# define AV_WN16(p, v) AV_WN(16, p, v)
|
|
#endif
|
|
|
|
#ifndef AV_WN32
|
|
# define AV_WN32(p, v) AV_WN(32, p, v)
|
|
#endif
|
|
|
|
#ifndef AV_WN64
|
|
# define AV_WN64(p, v) AV_WN(64, p, v)
|
|
#endif
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
# define AV_RB(s, p) AV_RN(s, p)
|
|
# define AV_WB(s, p, v) AV_WN(s, p, v)
|
|
# define AV_RL(s, p) bswap_##s(AV_RN(s, p))
|
|
# define AV_WL(s, p, v) AV_WN(s, p, bswap_##s(v))
|
|
#else
|
|
# define AV_RB(s, p) bswap_##s(AV_RN(s, p))
|
|
# define AV_WB(s, p, v) AV_WN(s, p, bswap_##s(v))
|
|
# define AV_RL(s, p) AV_RN(s, p)
|
|
# define AV_WL(s, p, v) AV_WN(s, p, v)
|
|
#endif
|
|
|
|
#define AV_RB8(x) (((const uint8_t*)(x))[0])
|
|
#define AV_WB8(p, d) do { ((uint8_t*)(p))[0] = (d); } while(0)
|
|
|
|
#define AV_RL8(x) AV_RB8(x)
|
|
#define AV_WL8(p, d) AV_WB8(p, d)
|
|
|
|
#ifndef AV_RB16
|
|
# define AV_RB16(p) AV_RB(16, p)
|
|
#endif
|
|
#ifndef AV_WB16
|
|
# define AV_WB16(p, v) AV_WB(16, p, v)
|
|
#endif
|
|
|
|
#ifndef AV_RL16
|
|
# define AV_RL16(p) AV_RL(16, p)
|
|
#endif
|
|
#ifndef AV_WL16
|
|
# define AV_WL16(p, v) AV_WL(16, p, v)
|
|
#endif
|
|
|
|
#ifndef AV_RB32
|
|
# define AV_RB32(p) AV_RB(32, p)
|
|
#endif
|
|
#ifndef AV_WB32
|
|
# define AV_WB32(p, v) AV_WB(32, p, v)
|
|
#endif
|
|
|
|
#ifndef AV_RL32
|
|
# define AV_RL32(p) AV_RL(32, p)
|
|
#endif
|
|
#ifndef AV_WL32
|
|
# define AV_WL32(p, v) AV_WL(32, p, v)
|
|
#endif
|
|
|
|
#ifndef AV_RB64
|
|
# define AV_RB64(p) AV_RB(64, p)
|
|
#endif
|
|
#ifndef AV_WB64
|
|
# define AV_WB64(p, v) AV_WB(64, p, v)
|
|
#endif
|
|
|
|
#ifndef AV_RL64
|
|
# define AV_RL64(p) AV_RL(64, p)
|
|
#endif
|
|
#ifndef AV_WL64
|
|
# define AV_WL64(p, v) AV_WL(64, p, v)
|
|
#endif
|
|
|
|
#define AV_RB24(x) ((((const uint8_t*)(x))[0] << 16) | \
|
|
(((const uint8_t*)(x))[1] << 8) | \
|
|
((const uint8_t*)(x))[2])
|
|
#define AV_WB24(p, d) do { \
|
|
((uint8_t*)(p))[2] = (d); \
|
|
((uint8_t*)(p))[1] = (d)>>8; \
|
|
((uint8_t*)(p))[0] = (d)>>16; } while(0)
|
|
|
|
#define AV_RL24(x) ((((const uint8_t*)(x))[2] << 16) | \
|
|
(((const uint8_t*)(x))[1] << 8) | \
|
|
((const uint8_t*)(x))[0])
|
|
#define AV_WL24(p, d) do { \
|
|
((uint8_t*)(p))[0] = (d); \
|
|
((uint8_t*)(p))[1] = (d)>>8; \
|
|
((uint8_t*)(p))[2] = (d)>>16; } while(0)
|
|
|
|
#endif /* AVUTIL_INTREADWRITE_H */
|