/*
- * 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
*/
#define AVUTIL_INTREADWRITE_H
#include <stdint.h>
-#include "config.h"
+#include "libavutil/avconfig.h"
+#include "attributes.h"
#include "bswap.h"
+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;
+
+typedef union {
+ uint32_t u32;
+ uint16_t u16[2];
+ uint8_t u8 [4];
+ float f32;
+} av_alias av_alias32;
+
+typedef union {
+ uint16_t u16;
+ uint8_t u8 [2];
+} av_alias av_alias16;
+
/*
* 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.
+ * 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 HAVE_BIGENDIAN
+#if AV_HAVE_BIGENDIAN
# if defined(AV_RN16) && !defined(AV_RB16)
# define AV_RB16(p) AV_RN16(p)
# define AV_WN16(p, v) AV_WB16(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_RN24) && !defined(AV_RB24)
# define AV_RB24(p) AV_RN24(p)
# elif !defined(AV_RN24) && defined(AV_RB24)
# 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_WN64(p, v) AV_WB64(p, v)
# endif
-#else /* HAVE_BIGENDIAN */
+#else /* AV_HAVE_BIGENDIAN */
# if defined(AV_RN16) && !defined(AV_RL16)
# define AV_RL16(p) AV_RN16(p)
# define AV_WN16(p, v) AV_WL16(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_RN24) && !defined(AV_RL24)
# define AV_RL24(p) AV_RN24(p)
# elif !defined(AV_RN24) && defined(AV_RL24)
# 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_WN64(p, v) AV_WL64(p, v)
# endif
-#endif /* !HAVE_BIGENDIAN */
+#endif /* !AV_HAVE_BIGENDIAN */
/*
* Define AV_[RW]N helper macros to simplify definitions not provided
* by per-arch headers.
*/
-#if HAVE_ATTRIBUTE_PACKED
+#if defined(__GNUC__) && !defined(__TI_COMPILER_VERSION__)
-struct unaligned_64 { uint64_t l; } __attribute__((packed));
-struct unaligned_32 { uint32_t l; } __attribute__((packed));
-struct unaligned_16 { uint16_t l; } __attribute__((packed));
+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 struct unaligned_##s *) (p))->l)
-# define AV_WN(s, p, v) (((struct unaligned_##s *) (p))->l) = (v)
+# 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)
+# define AV_WN(s, p, v) (*((__unaligned uint##s##_t*)(p)) = (v))
-#elif HAVE_FAST_UNALIGNED
+#elif AV_HAVE_FAST_UNALIGNED
-# define AV_RN(s, p) (*((const uint##s##_t*)(p)))
-# define AV_WN(s, p, v) *((uint##s##_t*)(p)) = (v)
+# 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])
+# 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)
+# 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])
+# 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)
+# 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])
+# 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)
+# 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])
+# 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)
+# 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])
+# 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)
+# 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])
+# 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 HAVE_BIGENDIAN
+# 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_WN64(p, v) AV_WN(64, p, v)
#endif
-#if HAVE_BIGENDIAN
+#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) bswap_##s(AV_RN##s(p))
-# define AV_WL(s, p, v) AV_WN##s(p, bswap_##s(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) bswap_##s(AV_RN##s(p))
-# define AV_WB(s, p, v) AV_WN##s(p, bswap_##s(v))
+# 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
#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])
+# 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)
+# 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])
+# 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)
+# 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
+
+/* 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