* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef INTREADWRITE_H
-#define INTREADWRITE_H
+#ifndef AVUTIL_INTREADWRITE_H
+#define AVUTIL_INTREADWRITE_H
-#ifdef __GNUC__
+#include <stdint.h>
+#include "config.h"
+#include "bswap.h"
+
+/*
+ * Arch-specific headers can provide any combination of
+ * AV_[RW][BLN](16|24|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_AVR32
+# include "avr32/intreadwrite.h"
+#elif ARCH_MIPS
+# include "mips/intreadwrite.h"
+#elif ARCH_PPC
+# include "ppc/intreadwrite.h"
+#endif
+
+/*
+ * Map AV_RNXX <-> AV_R[BL]XX for all variants provided by per-arch headers.
+ */
+
+#if 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 /* HAVE_BIGENDIAN */
+
+# 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
+
+# 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
+
+# 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
+
+# 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 /* !HAVE_BIGENDIAN */
+
+/*
+ * 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 LD16(a) (((const struct unaligned_16 *) (a))->l)
-#define LD32(a) (((const struct unaligned_32 *) (a))->l)
-#define LD64(a) (((const struct unaligned_64 *) (a))->l)
+# 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
-#define ST16(a, b) (((struct unaligned_16 *) (a))->l) = (b)
-#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
+#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
-#else /* __GNUC__ */
+#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
-#define LD16(a) (*((uint16_t*)(a)))
-#define LD32(a) (*((uint32_t*)(a)))
-#define LD64(a) (*((uint64_t*)(a)))
+#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
-#define ST16(a, b) *((uint16_t*)(a)) = (b)
-#define ST32(a, b) *((uint32_t*)(a)) = (b)
+#if 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 /* !__GNUC__ */
+#endif /* HAVE_FAST_UNALIGNED */
-/* endian macros */
-#define AV_RB8(x) (((uint8_t*)(x))[0])
-#define AV_WB8(p, d) { ((uint8_t*)(p))[0] = (d); }
+#ifndef AV_RN16
+# define AV_RN16(p) AV_RN(16, p)
+#endif
-#define AV_RB16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
-#define AV_WB16(p, d) { \
- ((uint8_t*)(p))[1] = (d); \
- ((uint8_t*)(p))[0] = (d)>>8; }
+#ifndef AV_RN32
+# define AV_RN32(p) AV_RN(32, p)
+#endif
-#define AV_RB24(x) ((((uint8_t*)(x))[0] << 16) | \
- (((uint8_t*)(x))[1] << 8) | \
- ((uint8_t*)(x))[2])
-#define AV_WB24(p, d) { \
- ((uint8_t*)(p))[2] = (d); \
- ((uint8_t*)(p))[1] = (d)>>8; \
- ((uint8_t*)(p))[0] = (d)>>16; }
+#ifndef AV_RN64
+# define AV_RN64(p) AV_RN(64, p)
+#endif
-#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) { \
- ((uint8_t*)(p))[3] = (d); \
- ((uint8_t*)(p))[2] = (d)>>8; \
- ((uint8_t*)(p))[1] = (d)>>16; \
- ((uint8_t*)(p))[0] = (d)>>24; }
+#ifndef AV_WN16
+# define AV_WN16(p, v) AV_WN(16, p, v)
+#endif
-#define AV_RL8(x) AV_RB8(x)
+#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 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) 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)
-#define AV_RL16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
-#define AV_WL16(p, d) { \
- ((uint8_t*)(p))[0] = (d); \
- ((uint8_t*)(p))[1] = (d)>>8; }
-
-#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) { \
- ((uint8_t*)(p))[0] = (d); \
- ((uint8_t*)(p))[1] = (d)>>8; \
- ((uint8_t*)(p))[2] = (d)>>16; \
- ((uint8_t*)(p))[3] = (d)>>24; }
-
-#endif /* 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
+
+#endif /* AVUTIL_INTREADWRITE_H */
projects / ffmpeg / blobdiff