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| author | Michael Niedermayer <michaelni@gmx.at> | 2008-12-16 21:08:16 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2008-12-16 21:08:16 +0000 |
| commit | 6120a343aa40a0bd895436570d3738f111901563 (patch) | |
| tree | 65acf832204d343570056fe61d32f87f5cb6e5cc | |
| parent | 1dd488e9559bbe411c6933fd8ff02450a4b3be7e (diff) | |
| download | ffmpeg-6120a343aa40a0bd895436570d3738f111901563.tar.gz | |
Factorize 3 multiplications out, code becomes 3 cpu cycles faster.
(not significant as thats just per MB)
Originally committed as revision 16174 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/h264.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libavcodec/h264.c b/libavcodec/h264.c index 91b2fa5a10..242b5da330 100644 --- a/libavcodec/h264.c +++ b/libavcodec/h264.c @@ -2371,9 +2371,9 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){ void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride); void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride); - dest_y = s->current_picture.data[0] + (mb_y * 16* s->linesize ) + mb_x * 16; - dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8; - dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8; + dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16; + dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8; + dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8; s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4); s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2); |