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Add 4x4 IDCT

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Originally committed as revision 11198 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov
2007-12-09 05:54:59 +00:00
parent e2270b4e1e
commit 91823a6efd
2 changed files with 15 additions and 0 deletions
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14
libavcodec/simple_idct.c
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@@ -585,3 +585,17 @@ void ff_simple_idct48_add(uint8_t *dest, int line_size, DCTELEM *block)
}
}
void ff_simple_idct44_add(uint8_t *dest, int line_size, DCTELEM *block)
{
int i;
/* IDCT4 on each line */
for(i=0; i<4; i++) {
idct4row(block + i*8);
}
/* IDCT4 and store */
for(i=0; i<4; i++){
idct4col_add(dest + i, line_size, block + i);
}
}

1
libavcodec/simple_idct.h
View File

@@ -42,5 +42,6 @@ void ff_simple_idct248_put(uint8_t *dest, int line_size, DCTELEM *block);
void ff_simple_idct84_add(uint8_t *dest, int line_size, DCTELEM *block);
void ff_simple_idct48_add(uint8_t *dest, int line_size, DCTELEM *block);
void ff_simple_idct44_add(uint8_t *dest, int line_size, DCTELEM *block);
#endif /* FFMPEG_SIMPLE_IDCT_H */