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Remove redundant mv_pred use for sub8x8 blocks

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The sub8x8 blocks has its own motion vector reference scheme. The
mv_pred is only used blocks of sizes 8x8 and above, to find the
starting point for motion search.

This change does not change any coding behavior. It makes the
encoding process slightly faster. (0.5% speed-up for local test on
speed 1.)

Change-Id: I746ee6ef0eac19aa3621be014afa12be8d82cbb9
This commit is contained in:
Jingning Han 2013-09-19 10:27:09 -07:00
parent b0211e7edf
commit 44b708b4c4
1 changed files with 1 additions and 1 deletions
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2
vp9/encoder/vp9_rdopt.c
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@ -2296,7 +2296,7 @@ static void setup_buffer_inter(VP9_COMP *cpi, MACROBLOCK *x,
// Further refinement that is encode side only to test the top few candidates
// in full and choose the best as the centre point for subsequent searches.
// The current implementation doesn't support scaling.
if (!vp9_is_scaled(&scale[frame_type]))
if (!vp9_is_scaled(&scale[frame_type]) && block_size >= BLOCK_8X8)
mv_pred(cpi, x, yv12_mb[frame_type][0].buf, yv12->y_stride,
frame_type, block_size);
}