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Code Issues Releases Activity

Move BE_*/LE_*/ST*/LD* macros to a common place. Some further

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optimization/cleanup would be desirable (e.g. LE_* and LD*
should be the same on x86).

Originally committed as revision 7218 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2006-12-03 16:35:30 +00:00
parent 5f3c4ba46c
commit cf1e119bb2
4 changed files with 43 additions and 38 deletions
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14
libavcodec/avcodec.h
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@ -2684,20 +2684,6 @@ int img_crop(AVPicture *dst, const AVPicture *src,
int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
int padtop, int padbottom, int padleft, int padright, int *color);
/* endian macros */
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
(((uint8_t*)(x))[1] << 16) | \
(((uint8_t*)(x))[2] << 8) | \
((uint8_t*)(x))[3])
#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
(((uint8_t*)(x))[2] << 16) | \
(((uint8_t*)(x))[1] << 8) | \
((uint8_t*)(x))[0])
#endif
extern unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
#ifdef __cplusplus

24
libavcodec/dsputil.h
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@ -590,30 +590,6 @@ void dsputil_init_bfin(DSPContext* c, AVCodecContext *avctx);
#endif
#ifdef __GNUC__
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 ST16(a, b) (((struct unaligned_16 *) (a))->l) = (b)
#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
#else /* __GNUC__ */
#define LD16(a) (*((uint16_t*)(a)))
#define LD32(a) (*((uint32_t*)(a)))
#define LD64(a) (*((uint64_t*)(a)))
#define ST16(a, b) *((uint16_t*)(a)) = (b)
#define ST32(a, b) *((uint32_t*)(a)) = (b)
#endif /* !__GNUC__ */
/* PSNR */
void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
int orig_linesize[3], int coded_linesize,

1
libavutil/internal.h
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@ -34,6 +34,7 @@
# define ENODATA 61
#endif
#include "intreadwrite.h"
#include "bswap.h"
#include <stddef.h>

42
libavutil/intreadwrite.h Normal file
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@ -0,0 +1,42 @@
#ifndef INTREADWRITE_H
#define INTREADWRITE_H
#ifdef __GNUC__
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 ST16(a, b) (((struct unaligned_16 *) (a))->l) = (b)
#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
#else /* __GNUC__ */
#define LD16(a) (*((uint16_t*)(a)))
#define LD32(a) (*((uint32_t*)(a)))
#define LD64(a) (*((uint64_t*)(a)))
#define ST16(a, b) *((uint16_t*)(a)) = (b)
#define ST32(a, b) *((uint32_t*)(a)) = (b)
#endif /* !__GNUC__ */
/* endian macros */
#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32)
#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
(((uint8_t*)(x))[1] << 16) | \
(((uint8_t*)(x))[2] << 8) | \
((uint8_t*)(x))[3])
#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0])
#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \
(((uint8_t*)(x))[2] << 16) | \
(((uint8_t*)(x))[1] << 8) | \
((uint8_t*)(x))[0])
#endif
#endif /* INTREADWRITE_H */