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simplify and remove useless index in AV_W* 

Originally committed as revision 7852 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-02-06 19:10:17 +00:00
parent dac0ebbb65
commit 7d4495dafe
2 changed files with 33 additions and 66 deletions
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63
libavcodec/bytestream.h
View File

@ -22,23 +22,23 @@
#ifndef FFMPEG_BYTESTREAM_H
#define FFMPEG_BYTESTREAM_H
static av_always_inline unsigned int bytestream_get_le32(uint8_t **b)
{
(*b) += 4;
return AV_RL32(*b - 4);
}
#define DEF(name, bytes, read, write)\
static av_always_inline unsigned int bytestream_get_ ## name(uint8_t **b){\
(*b) += bytes;\
return read(*b - bytes);\
}\
static av_always_inline void bytestream_put_ ##name(uint8_t **b, const unsigned int value){\
write(*b, value);\
(*b) += bytes;\
};
static av_always_inline unsigned int bytestream_get_le16(uint8_t **b)
{
(*b) += 2;
return AV_RL16(*b - 2);
}
DEF(le32, 4, AV_RL32, AV_WL32)
DEF(le16, 2, AV_RL16, AV_WL16)
DEF(be32, 4, AV_RB32, AV_WB32)
DEF(be16, 2, AV_RB16, AV_WB16)
DEF(byte, 1, AV_RB8 , AV_WB8 )
static av_always_inline unsigned int bytestream_get_byte(uint8_t **b)
{
(*b)++;
return (*b)[-1];
}
#undef DEF
static av_always_inline unsigned int bytestream_get_buffer(uint8_t **b, uint8_t *dst, unsigned int size)
{
@ -47,39 +47,6 @@ static av_always_inline unsigned int bytestream_get_buffer(uint8_t **b, uint8_t
return size;
}
static av_always_inline void bytestream_put_be32(uint8_t **b, const unsigned int value)
{
*(*b)++ = value >> 24;
*(*b)++ = value >> 16;
*(*b)++ = value >> 8;
*(*b)++ = value;
};
static av_always_inline void bytestream_put_be16(uint8_t **b, const unsigned int value)
{
*(*b)++ = value >> 8;
*(*b)++ = value;
}
static av_always_inline void bytestream_put_le32(uint8_t **b, const unsigned int value)
{
*(*b)++ = value;
*(*b)++ = value >> 8;
*(*b)++ = value >> 16;
*(*b)++ = value >> 24;
}
static av_always_inline void bytestream_put_le16(uint8_t **b, const unsigned int value)
{
*(*b)++ = value;
*(*b)++ = value >> 8;
}
static av_always_inline void bytestream_put_byte(uint8_t **b, const unsigned int value)
{
*(*b)++ = value;
}
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
{
memcpy(*b, src, size);

36
libavutil/intreadwrite.h
View File

@ -27,39 +27,39 @@ struct unaligned_16 { uint16_t l; } __attribute__((packed));
/* endian macros */
#define AV_RB8(x) (((uint8_t*)(x))[0])
#define AV_WB8(p, i, d) { ((uint8_t*)(p))[(i)] = (d); }
#define AV_WB8(p, d) { ((uint8_t*)(p))[0] = (d); }
#define AV_RB16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
#define AV_WB16(p, i, d) { \
((uint8_t*)(p))[(i)+1] = (d); \
((uint8_t*)(p))[(i)] = (d)>>8; }
#define AV_WB16(p, d) { \
((uint8_t*)(p))[1] = (d); \
((uint8_t*)(p))[0] = (d)>>8; }
#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, i, d) { \
((uint8_t*)(p))[(i)+3] = (d); \
((uint8_t*)(p))[(i)+2] = (d)>>8; \
((uint8_t*)(p))[(i)+1] = (d)>>16; \
((uint8_t*)(p))[(i)] = (d)>>24; }
#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; }
#define AV_RL8(x) AV_RB8(x)
#define AV_WL8(p, i, d) AV_WB8(p, i, d)
#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, i, d) { \
((uint8_t*)(p))[(i)] = (d); \
((uint8_t*)(p))[(i)+1] = (d)>>8; }
#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, i, d) { \
((uint8_t*)(p))[(i)] = (d); \
((uint8_t*)(p))[(i)+1] = (d)>>8; \
((uint8_t*)(p))[(i)+2] = (d)>>16; \
((uint8_t*)(p))[(i)+3] = (d)>>24; }
#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 */