| f5a90186 |
/*
* 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
*/
|
| 98790382 |
#ifndef AVUTIL_INTREADWRITE_H
#define AVUTIL_INTREADWRITE_H |
| cf1e119b |
|
| 99545457 |
#include <stdint.h> |
| a087028a |
#include "config.h" |
| c08be350 |
#include "bswap.h" |
| 99545457 |
|
| cf1e119b |
#ifdef __GNUC__
struct unaligned_64 { uint64_t l; } __attribute__((packed));
struct unaligned_32 { uint32_t l; } __attribute__((packed));
struct unaligned_16 { uint16_t l; } __attribute__((packed));
|
| 905694d9 |
#define AV_RN16(a) (((const struct unaligned_16 *) (a))->l)
#define AV_RN32(a) (((const struct unaligned_32 *) (a))->l)
#define AV_RN64(a) (((const struct unaligned_64 *) (a))->l) |
| cf1e119b |
|
| 905694d9 |
#define AV_WN16(a, b) (((struct unaligned_16 *) (a))->l) = (b)
#define AV_WN32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
#define AV_WN64(a, b) (((struct unaligned_64 *) (a))->l) = (b) |
| cf1e119b |
|
| b7b38fb2 |
#elif defined(__DECC)
#define AV_RN16(a) (*((const __unaligned uint16_t*)(a)))
#define AV_RN32(a) (*((const __unaligned uint32_t*)(a)))
#define AV_RN64(a) (*((const __unaligned uint64_t*)(a)))
#define AV_WN16(a, b) *((__unaligned uint16_t*)(a)) = (b)
#define AV_WN32(a, b) *((__unaligned uint32_t*)(a)) = (b)
#define AV_WN64(a, b) *((__unaligned uint64_t*)(a)) = (b)
#else |
| cf1e119b |
|
| ff794171 |
#define AV_RN16(a) (*((const uint16_t*)(a)))
#define AV_RN32(a) (*((const uint32_t*)(a)))
#define AV_RN64(a) (*((const uint64_t*)(a))) |
| cf1e119b |
|
| 905694d9 |
#define AV_WN16(a, b) *((uint16_t*)(a)) = (b)
#define AV_WN32(a, b) *((uint32_t*)(a)) = (b)
#define AV_WN64(a, b) *((uint64_t*)(a)) = (b) |
| cf1e119b |
#endif /* !__GNUC__ */
/* endian macros */ |
| ff794171 |
#define AV_RB8(x) (((const uint8_t*)(x))[0]) |
| 803ca89c |
#define AV_WB8(p, d) do { ((uint8_t*)(p))[0] = (d); } while(0) |
| a3550abd |
|
| 85b1a722 |
#define AV_RL8(x) AV_RB8(x)
#define AV_WL8(p, d) AV_WB8(p, d)
|
| b250f9c6 |
#if HAVE_FAST_UNALIGNED |
| 7b829d2a |
# ifdef WORDS_BIGENDIAN |
| 905694d9 |
# define AV_RB16(x) AV_RN16(x)
# define AV_WB16(p, d) AV_WN16(p, d) |
| 7b829d2a |
|
| 905694d9 |
# define AV_RL16(x) bswap_16(AV_RN16(x))
# define AV_WL16(p, d) AV_WN16(p, bswap_16(d)) |
| fbbea48e |
# define AV_RB32(x) AV_RN32(x)
# define AV_WB32(p, d) AV_WN32(p, d)
# define AV_RL32(x) bswap_32(AV_RN32(x))
# define AV_WL32(p, d) AV_WN32(p, bswap_32(d))
# define AV_RB64(x) AV_RN64(x)
# define AV_WB64(p, d) AV_WN64(p, d)
# define AV_RL64(x) bswap_64(AV_RN64(x))
# define AV_WL64(p, d) AV_WN64(p, bswap_64(d)) |
| 7b829d2a |
# else /* WORDS_BIGENDIAN */ |
| 905694d9 |
# define AV_RB16(x) bswap_16(AV_RN16(x))
# define AV_WB16(p, d) AV_WN16(p, bswap_16(d)) |
| 7b829d2a |
|
| 905694d9 |
# define AV_RL16(x) AV_RN16(x)
# define AV_WL16(p, d) AV_WN16(p, d) |
| fbbea48e |
# define AV_RB32(x) bswap_32(AV_RN32(x))
# define AV_WB32(p, d) AV_WN32(p, bswap_32(d))
# define AV_RL32(x) AV_RN32(x)
# define AV_WL32(p, d) AV_WN32(p, d)
# define AV_RB64(x) bswap_64(AV_RN64(x))
# define AV_WB64(p, d) AV_WN64(p, bswap_64(d))
# define AV_RL64(x) AV_RN64(x)
# define AV_WL64(p, d) AV_WN64(p, d) |
| 7b829d2a |
# endif
#else /* HAVE_FAST_UNALIGNED */ |
| ff794171 |
#define AV_RB16(x) ((((const uint8_t*)(x))[0] << 8) | ((const uint8_t*)(x))[1]) |
| 803ca89c |
#define AV_WB16(p, d) do { \ |
| 7d4495da |
((uint8_t*)(p))[1] = (d); \ |
| 803ca89c |
((uint8_t*)(p))[0] = (d)>>8; } while(0) |
| a3550abd |
|
| ff794171 |
#define AV_RL16(x) ((((const uint8_t*)(x))[1] << 8) | \
((const uint8_t*)(x))[0]) |
| 803ca89c |
#define AV_WL16(p, d) do { \ |
| 85b1a722 |
((uint8_t*)(p))[0] = (d); \ |
| 803ca89c |
((uint8_t*)(p))[1] = (d)>>8; } while(0) |
| 7b829d2a |
|
| ff794171 |
#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]) |
| 803ca89c |
#define AV_WB32(p, d) do { \ |
| 7d4495da |
((uint8_t*)(p))[3] = (d); \
((uint8_t*)(p))[2] = (d)>>8; \
((uint8_t*)(p))[1] = (d)>>16; \ |
| 803ca89c |
((uint8_t*)(p))[0] = (d)>>24; } while(0) |
| a3550abd |
|
| ff794171 |
#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]) |
| 803ca89c |
#define AV_WL32(p, d) do { \ |
| 7d4495da |
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
((uint8_t*)(p))[2] = (d)>>16; \ |
| 803ca89c |
((uint8_t*)(p))[3] = (d)>>24; } while(0) |
| 9e010b41 |
|
| ff794171 |
#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]) |
| 803ca89c |
#define AV_WB64(p, d) do { \ |
| 9e010b41 |
((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; \ |
| 803ca89c |
((uint8_t*)(p))[0] = (d)>>56; } while(0) |
| 9e010b41 |
|
| ff794171 |
#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]) |
| 803ca89c |
#define AV_WL64(p, d) do { \ |
| 9e010b41 |
((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; \ |
| 803ca89c |
((uint8_t*)(p))[7] = (d)>>56; } while(0) |
| fbbea48e |
#endif /* HAVE_FAST_UNALIGNED */
#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) |
| 9e010b41 |
|
| 98790382 |
#endif /* AVUTIL_INTREADWRITE_H */ |