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Code Issues Releases Activity

Make intreadwrite.h installation-safe

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Originally committed as revision 24173 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2010-07-10 22:22:03 +00:00
parent d268eee96b
commit 8681669272
1 changed files with 14 additions and 8 deletions
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22
libavutil/intreadwrite.h
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@ -20,7 +20,7 @@
#define AVUTIL_INTREADWRITE_H
#include <stdint.h>
#include "config.h"
#include "libavutil/avconfig.h"
#include "attributes.h"
#include "bswap.h"
@ -52,6 +52,10 @@ typedef union {
* as inline functions.
*/
#ifdef HAVE_AV_CONFIG_H
#include "config.h"
#if ARCH_ARM
# include "arm/intreadwrite.h"
#elif ARCH_AVR32
@ -66,11 +70,13 @@ typedef union {
# 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)
@ -120,7 +126,7 @@ typedef union {
# 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)
@ -170,14 +176,14 @@ typedef union {
# 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__)
union unaligned_64 { uint64_t l; } __attribute__((packed)) av_alias;
union unaligned_32 { uint32_t l; } __attribute__((packed)) av_alias;
@ -191,7 +197,7 @@ union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;
# 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
#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))
@ -302,7 +308,7 @@ union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;
} while(0)
#endif
#if HAVE_BIGENDIAN
#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
@ -336,7 +342,7 @@ union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;
# 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) av_bswap##s(AV_RN##s(p))