/*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef FFMPEG_INTREADWRITE_H
-#define FFMPEG_INTREADWRITE_H
+#ifndef AVUTIL_INTREADWRITE_H
+#define AVUTIL_INTREADWRITE_H
#include <stdint.h>
+#include "libavutil/avconfig.h"
+#include "attributes.h"
#include "bswap.h"
-#ifdef __GNUC__
+typedef union {
+ uint64_t u64;
+ uint32_t u32[2];
+ uint16_t u16[4];
+ uint8_t u8 [8];
+ double f64;
+ float f32[2];
+} av_alias av_alias64;
-struct unaligned_64 { uint64_t l; } __attribute__((packed));
-struct unaligned_32 { uint32_t l; } __attribute__((packed));
-struct unaligned_16 { uint16_t l; } __attribute__((packed));
+typedef union {
+ uint32_t u32;
+ uint16_t u16[2];
+ uint8_t u8 [4];
+ float f32;
+} av_alias av_alias32;
-#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)
+typedef union {
+ uint16_t u16;
+ uint8_t u8 [2];
+} av_alias av_alias16;
-#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)
+/*
+ * Arch-specific headers can provide any combination of
+ * AV_[RW][BLN](16|24|32|64) and AV_(COPY|SWAP|ZERO)(64|128) macros.
+ * Preprocessor symbols must be defined, even if these are implemented
+ * as inline functions.
+ */
+
+#ifdef HAVE_AV_CONFIG_H
+
+#include "config.h"
+
+#if ARCH_ARM
+# include "arm/intreadwrite.h"
+#elif ARCH_AVR32
+# include "avr32/intreadwrite.h"
+#elif ARCH_MIPS
+# include "mips/intreadwrite.h"
+#elif ARCH_PPC
+# include "ppc/intreadwrite.h"
+#elif ARCH_TOMI
+# include "tomi/intreadwrite.h"
+#elif ARCH_X86
+# include "x86/intreadwrite.h"
+#endif
+
+#endif /* HAVE_AV_CONFIG_H */
+
+/*
+ * Map AV_RNXX <-> AV_R[BL]XX for all variants provided by per-arch headers.
+ */
+
+#if AV_HAVE_BIGENDIAN
+
+# if defined(AV_RN16) && !defined(AV_RB16)
+# define AV_RB16(p) AV_RN16(p)
+# elif !defined(AV_RN16) && defined(AV_RB16)
+# define AV_RN16(p) AV_RB16(p)
+# endif
+
+# if defined(AV_WN16) && !defined(AV_WB16)
+# define AV_WB16(p, v) AV_WN16(p, v)
+# elif !defined(AV_WN16) && defined(AV_WB16)
+# define AV_WN16(p, v) AV_WB16(p, v)
+# endif
+
+# if defined(AV_RN24) && !defined(AV_RB24)
+# define AV_RB24(p) AV_RN24(p)
+# elif !defined(AV_RN24) && defined(AV_RB24)
+# define AV_RN24(p) AV_RB24(p)
+# endif
+
+# if defined(AV_WN24) && !defined(AV_WB24)
+# define AV_WB24(p, v) AV_WN24(p, v)
+# elif !defined(AV_WN24) && defined(AV_WB24)
+# define AV_WN24(p, v) AV_WB24(p, v)
+# endif
+
+# if defined(AV_RN32) && !defined(AV_RB32)
+# define AV_RB32(p) AV_RN32(p)
+# elif !defined(AV_RN32) && defined(AV_RB32)
+# define AV_RN32(p) AV_RB32(p)
+# endif
+
+# if defined(AV_WN32) && !defined(AV_WB32)
+# define AV_WB32(p, v) AV_WN32(p, v)
+# elif !defined(AV_WN32) && defined(AV_WB32)
+# define AV_WN32(p, v) AV_WB32(p, v)
+# endif
+
+# if defined(AV_RN64) && !defined(AV_RB64)
+# define AV_RB64(p) AV_RN64(p)
+# elif !defined(AV_RN64) && defined(AV_RB64)
+# define AV_RN64(p) AV_RB64(p)
+# endif
+
+# if defined(AV_WN64) && !defined(AV_WB64)
+# define AV_WB64(p, v) AV_WN64(p, v)
+# elif !defined(AV_WN64) && defined(AV_WB64)
+# define AV_WN64(p, v) AV_WB64(p, v)
+# endif
-#else /* __GNUC__ */
+#else /* AV_HAVE_BIGENDIAN */
-#define AV_RN16(a) (*((uint16_t*)(a)))
-#define AV_RN32(a) (*((uint32_t*)(a)))
-#define AV_RN64(a) (*((uint64_t*)(a)))
+# if defined(AV_RN16) && !defined(AV_RL16)
+# define AV_RL16(p) AV_RN16(p)
+# elif !defined(AV_RN16) && defined(AV_RL16)
+# define AV_RN16(p) AV_RL16(p)
+# endif
-#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)
+# if defined(AV_WN16) && !defined(AV_WL16)
+# define AV_WL16(p, v) AV_WN16(p, v)
+# elif !defined(AV_WN16) && defined(AV_WL16)
+# define AV_WN16(p, v) AV_WL16(p, v)
+# endif
-#endif /* !__GNUC__ */
+# if defined(AV_RN24) && !defined(AV_RL24)
+# define AV_RL24(p) AV_RN24(p)
+# elif !defined(AV_RN24) && defined(AV_RL24)
+# define AV_RN24(p) AV_RL24(p)
+# endif
-/* endian macros */
-#define AV_RB8(x) (((uint8_t*)(x))[0])
+# if defined(AV_WN24) && !defined(AV_WL24)
+# define AV_WL24(p, v) AV_WN24(p, v)
+# elif !defined(AV_WN24) && defined(AV_WL24)
+# define AV_WN24(p, v) AV_WL24(p, v)
+# endif
+
+# if defined(AV_RN32) && !defined(AV_RL32)
+# define AV_RL32(p) AV_RN32(p)
+# elif !defined(AV_RN32) && defined(AV_RL32)
+# define AV_RN32(p) AV_RL32(p)
+# endif
+
+# if defined(AV_WN32) && !defined(AV_WL32)
+# define AV_WL32(p, v) AV_WN32(p, v)
+# elif !defined(AV_WN32) && defined(AV_WL32)
+# define AV_WN32(p, v) AV_WL32(p, v)
+# endif
+
+# if defined(AV_RN64) && !defined(AV_RL64)
+# define AV_RL64(p) AV_RN64(p)
+# elif !defined(AV_RN64) && defined(AV_RL64)
+# define AV_RN64(p) AV_RL64(p)
+# endif
+
+# if defined(AV_WN64) && !defined(AV_WL64)
+# define AV_WL64(p, v) AV_WN64(p, v)
+# elif !defined(AV_WN64) && defined(AV_WL64)
+# define AV_WN64(p, v) AV_WL64(p, v)
+# endif
+
+#endif /* !AV_HAVE_BIGENDIAN */
+
+/*
+ * Define AV_[RW]N helper macros to simplify definitions not provided
+ * by per-arch headers.
+ */
+
+#if defined(__GNUC__) && !defined(__TI_COMPILER_VERSION__)
+
+union unaligned_64 { uint64_t l; } __attribute__((packed)) av_alias;
+union unaligned_32 { uint32_t l; } __attribute__((packed)) av_alias;
+union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;
+
+# define AV_RN(s, p) (((const union unaligned_##s *) (p))->l)
+# define AV_WN(s, p, v) ((((union 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 AV_HAVE_FAST_UNALIGNED
+
+# define AV_RN(s, p) (((const av_alias##s*)(p))->u##s)
+# define AV_WN(s, p, v) (((av_alias##s*)(p))->u##s = (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) \
+ (((uint32_t)((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) \
+ (((uint32_t)((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
+
+#if AV_HAVE_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
+
+#if AV_HAVE_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) av_bswap##s(AV_RN##s(p))
+# define AV_WL(s, p, v) AV_WN##s(p, av_bswap##s(v))
+#else
+# define AV_RB(s, p) av_bswap##s(AV_RN##s(p))
+# define AV_WB(s, p, v) AV_WN##s(p, av_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)
-#ifdef HAVE_FAST_UNALIGNED
-# ifdef WORDS_BIGENDIAN
-# define AV_RB16(x) AV_RN16(x)
-# define AV_WB16(p, d) AV_WN16(p, d)
-
-# define AV_RL16(x) bswap_16(AV_RN16(x))
-# define AV_WL16(p, d) AV_WN16(p, bswap_16(d))
-# else /* WORDS_BIGENDIAN */
-# define AV_RB16(x) bswap_16(AV_RN16(x))
-# define AV_WB16(p, d) AV_WN16(p, bswap_16(d))
-
-# define AV_RL16(x) AV_RN16(x)
-# define AV_WL16(p, d) AV_WN16(p, d)
-# endif
-#else /* HAVE_FAST_UNALIGNED */
-#define AV_RB16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
-#define AV_WB16(p, d) do { \
- ((uint8_t*)(p))[1] = (d); \
- ((uint8_t*)(p))[0] = (d)>>8; } while(0)
-
-#define AV_RL16(x) ((((uint8_t*)(x))[1] << 8) | \
- ((uint8_t*)(x))[0])
-#define AV_WL16(p, d) do { \
- ((uint8_t*)(p))[0] = (d); \
- ((uint8_t*)(p))[1] = (d)>>8; } while(0)
-#endif
-
-#define AV_RB24(x) ((((uint8_t*)(x))[0] << 16) | \
- (((uint8_t*)(x))[1] << 8) | \
- ((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) ((((uint8_t*)(x))[2] << 16) | \
- (((uint8_t*)(x))[1] << 8) | \
- ((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)
-
-#ifdef HAVE_FAST_UNALIGNED
-# ifdef WORDS_BIGENDIAN
-# 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))
-# else /* WORDS_BIGENDIAN */
-# 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)
-# endif
-#else /* HAVE_FAST_UNALIGNED */
-#define AV_RB32(x) ((((uint8_t*)(x))[0] << 24) | \
- (((uint8_t*)(x))[1] << 16) | \
- (((uint8_t*)(x))[2] << 8) | \
- ((uint8_t*)(x))[3])
-#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)
-
-#define AV_RL32(x) ((((uint8_t*)(x))[3] << 24) | \
- (((uint8_t*)(x))[2] << 16) | \
- (((uint8_t*)(x))[1] << 8) | \
- ((uint8_t*)(x))[0])
-#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
-
-#ifdef HAVE_FAST_UNALIGNED
-# ifdef WORDS_BIGENDIAN
-# 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))
-# else /* WORDS_BIGENDIAN */
-# 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)
-# endif
-#else /* HAVE_FAST_UNALIGNED */
-#define AV_RB64(x) (((uint64_t)((uint8_t*)(x))[0] << 56) | \
- ((uint64_t)((uint8_t*)(x))[1] << 48) | \
- ((uint64_t)((uint8_t*)(x))[2] << 40) | \
- ((uint64_t)((uint8_t*)(x))[3] << 32) | \
- ((uint64_t)((uint8_t*)(x))[4] << 24) | \
- ((uint64_t)((uint8_t*)(x))[5] << 16) | \
- ((uint64_t)((uint8_t*)(x))[6] << 8) | \
- (uint64_t)((uint8_t*)(x))[7])
-#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)
-
-#define AV_RL64(x) (((uint64_t)((uint8_t*)(x))[7] << 56) | \
- ((uint64_t)((uint8_t*)(x))[6] << 48) | \
- ((uint64_t)((uint8_t*)(x))[5] << 40) | \
- ((uint64_t)((uint8_t*)(x))[4] << 32) | \
- ((uint64_t)((uint8_t*)(x))[3] << 24) | \
- ((uint64_t)((uint8_t*)(x))[2] << 16) | \
- ((uint64_t)((uint8_t*)(x))[1] << 8) | \
- (uint64_t)((uint8_t*)(x))[0])
-#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
-
-#endif /* FFMPEG_INTREADWRITE_H */
+#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
+
+#ifndef AV_RB24
+# define AV_RB24(x) \
+ ((((const uint8_t*)(x))[0] << 16) | \
+ (((const uint8_t*)(x))[1] << 8) | \
+ ((const uint8_t*)(x))[2])
+#endif
+#ifndef AV_WB24
+# 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)
+#endif
+
+#ifndef AV_RL24
+# define AV_RL24(x) \
+ ((((const uint8_t*)(x))[2] << 16) | \
+ (((const uint8_t*)(x))[1] << 8) | \
+ ((const uint8_t*)(x))[0])
+#endif
+#ifndef AV_WL24
+# 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
+
+/*
+ * The AV_[RW]NA macros access naturally aligned data
+ * in a type-safe way.
+ */
+
+#define AV_RNA(s, p) (((const av_alias##s*)(p))->u##s)
+#define AV_WNA(s, p, v) (((av_alias##s*)(p))->u##s = (v))
+
+#ifndef AV_RN16A
+# define AV_RN16A(p) AV_RNA(16, p)
+#endif
+
+#ifndef AV_RN32A
+# define AV_RN32A(p) AV_RNA(32, p)
+#endif
+
+#ifndef AV_RN64A
+# define AV_RN64A(p) AV_RNA(64, p)
+#endif
+
+#ifndef AV_WN16A
+# define AV_WN16A(p, v) AV_WNA(16, p, v)
+#endif
+
+#ifndef AV_WN32A
+# define AV_WN32A(p, v) AV_WNA(32, p, v)
+#endif
+
+#ifndef AV_WN64A
+# define AV_WN64A(p, v) AV_WNA(64, p, v)
+#endif
+
+/*
+ * The AV_COPYxxU macros are suitable for copying data to/from unaligned
+ * memory locations.
+ */
+
+#define AV_COPYU(n, d, s) AV_WN##n(d, AV_RN##n(s));
+
+#ifndef AV_COPY16U
+# define AV_COPY16U(d, s) AV_COPYU(16, d, s)
+#endif
+
+#ifndef AV_COPY32U
+# define AV_COPY32U(d, s) AV_COPYU(32, d, s)
+#endif
+
+#ifndef AV_COPY64U
+# define AV_COPY64U(d, s) AV_COPYU(64, d, s)
+#endif
+
+#ifndef AV_COPY128U
+# define AV_COPY128U(d, s) \
+ do { \
+ AV_COPY64U(d, s); \
+ AV_COPY64U((char *)(d) + 8, (const char *)(s) + 8); \
+ } while(0)
+#endif
+
+/* Parameters for AV_COPY*, AV_SWAP*, AV_ZERO* must be
+ * naturally aligned. They may be implemented using MMX,
+ * so emms_c() must be called before using any float code
+ * afterwards.
+ */
+
+#define AV_COPY(n, d, s) \
+ (((av_alias##n*)(d))->u##n = ((const av_alias##n*)(s))->u##n)
+
+#ifndef AV_COPY16
+# define AV_COPY16(d, s) AV_COPY(16, d, s)
+#endif
+
+#ifndef AV_COPY32
+# define AV_COPY32(d, s) AV_COPY(32, d, s)
+#endif
+
+#ifndef AV_COPY64
+# define AV_COPY64(d, s) AV_COPY(64, d, s)
+#endif
+
+#ifndef AV_COPY128
+# define AV_COPY128(d, s) \
+ do { \
+ AV_COPY64(d, s); \
+ AV_COPY64((char*)(d)+8, (char*)(s)+8); \
+ } while(0)
+#endif
+
+#define AV_SWAP(n, a, b) FFSWAP(av_alias##n, *(av_alias##n*)(a), *(av_alias##n*)(b))
+
+#ifndef AV_SWAP64
+# define AV_SWAP64(a, b) AV_SWAP(64, a, b)
+#endif
+
+#define AV_ZERO(n, d) (((av_alias##n*)(d))->u##n = 0)
+
+#ifndef AV_ZERO16
+# define AV_ZERO16(d) AV_ZERO(16, d)
+#endif
+
+#ifndef AV_ZERO32
+# define AV_ZERO32(d) AV_ZERO(32, d)
+#endif
+
+#ifndef AV_ZERO64
+# define AV_ZERO64(d) AV_ZERO(64, d)
+#endif
+
+#ifndef AV_ZERO128
+# define AV_ZERO128(d) \
+ do { \
+ AV_ZERO64(d); \
+ AV_ZERO64((char*)(d)+8); \
+ } while(0)
+#endif
+
+#endif /* AVUTIL_INTREADWRITE_H */
projects / ffmpeg / blobdiff