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better logic for bswap 

Originally committed as revision 596 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard 2002-05-25 22:38:02 +00:00
parent d75dd1ca4c
commit d503f97038
1 changed files with 14 additions and 16 deletions
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30
libavcodec/common.h
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@ -50,6 +50,8 @@ typedef UINT16 uint16_t;
typedef INT16 int16_t;
typedef UINT32 uint32_t;
typedef INT32 int32_t;
typedef UINT64 uint64_t;
typedef INT64 int64_t;
#ifndef __MINGW32__
#define INT64_C(c) (c ## i64)
@ -69,22 +71,15 @@ typedef INT32 int32_t;
#define DEBUG
#endif
// code from bits/byteswap.h (C) 1997, 1998 Free Software Foundation, Inc.
#define bswap_32(x) \
((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
(((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
#define be2me_32(x) bswap_32(x)
#define snprintf _snprintf
#ifndef __MINGW32__
/* no config.h with VC */
#define CONFIG_ENCODERS 1
#define CONFIG_DECODERS 1
#define CONFIG_AC3 1
#endif
#ifdef HAVE_AV_CONFIG_H
#else
#define MANGLE(a) "_" #a
#endif /* HAVE_AV_CONFIG_H */
#else /* CONFIG_WIN32 */
/* unix */
@ -114,20 +109,23 @@ typedef signed long long INT64;
#define UINT64_C(c) (c ## ULL)
#endif
#include "bswap.h"
#ifdef USE_FASTMEMCPY
#include "fastmemcpy.h"
#endif
#define MANGLE(a) #a
#endif /* HAVE_AV_CONFIG_H */
#endif /* !CONFIG_WIN32 */
/* debug stuff */
#ifdef HAVE_AV_CONFIG_H
#include "bswap.h"
/* debug stuff */
#ifndef DEBUG
#define NDEBUG
#endif