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~15% faster h264_chroma_mc2/4_c() these also prevent some possible out 

of array reads.

Originally committed as revision 11290 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-12-21 10:16:22 +00:00
parent a06a18c55d
commit febdd0b9b4
1 changed files with 26 additions and 0 deletions
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26
libavcodec/dsputil.c
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@ -1440,6 +1440,7 @@ static void OPNAME ## h264_chroma_mc2_c(uint8_t *dst/*align 8*/, uint8_t *src/*a
\
assert(x<8 && y<8 && x>=0 && y>=0);\
\
if(D){\
for(i=0; i<h; i++)\
{\
OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1]));\
@ -1447,6 +1448,17 @@ static void OPNAME ## h264_chroma_mc2_c(uint8_t *dst/*align 8*/, uint8_t *src/*a
dst+= stride;\
src+= stride;\
}\
}else{\
const int E= B+C;\
const int step= C ? stride : 1;\
for(i=0; i<h; i++)\
{\
OP(dst[0], (A*src[0] + E*src[step+0]));\
OP(dst[1], (A*src[1] + E*src[step+1]));\
dst+= stride;\
src+= stride;\
}\
}\
}\
\
static void OPNAME ## h264_chroma_mc4_c(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y){\
@ -1458,6 +1470,7 @@ static void OPNAME ## h264_chroma_mc4_c(uint8_t *dst/*align 8*/, uint8_t *src/*a
\
assert(x<8 && y<8 && x>=0 && y>=0);\
\
if(D){\
for(i=0; i<h; i++)\
{\
OP(dst[0], (A*src[0] + B*src[1] + C*src[stride+0] + D*src[stride+1]));\
@ -1467,6 +1480,19 @@ static void OPNAME ## h264_chroma_mc4_c(uint8_t *dst/*align 8*/, uint8_t *src/*a
dst+= stride;\
src+= stride;\
}\
}else{\
const int E= B+C;\
const int step= C ? stride : 1;\
for(i=0; i<h; i++)\
{\
OP(dst[0], (A*src[0] + E*src[step+0]));\
OP(dst[1], (A*src[1] + E*src[step+1]));\
OP(dst[2], (A*src[2] + E*src[step+2]));\
OP(dst[3], (A*src[3] + E*src[step+3]));\
dst+= stride;\
src+= stride;\
}\
}\
}\
\
static void OPNAME ## h264_chroma_mc8_c(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y){\