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Skip comp inter mode tests for arf coding

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This commit skips the compound inter mode prediction check in the
rate-distortion optimization loop for ARF coding. It reduces the
runtime for certain test clips at speed 3, at no compression
performance change:

bus CIF 1000 kbps, 8260 ms -> 8090 ms, 1.8% speed-up
stockholm 720p 1000 kbps, 74453 ms -> 71826 ms, 2.9% speed-up

No visible speed-up for pedestrian area 1080p at 2000 kbps.

Change-Id: Ic68aa56837159b726563b784e2e3729e846465ad
This commit is contained in:
Jingning Han
2014-09-02 10:57:10 -07:00
parent 6b649a0db9
commit 33176fef87
1 changed files with 4 additions and 0 deletions
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4
vp9/encoder/vp9_rdopt.c
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@@ -2779,6 +2779,10 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
comp_pred = second_ref_frame > INTRA_FRAME;
if (comp_pred) {
if (cpi->sf.alt_ref_search_fp)
if (!cm->show_frame)
continue;
if ((mode_search_skip_flags & FLAG_SKIP_COMP_BESTINTRA) &&
best_mode_index >=0 &&
vp9_mode_order[best_mode_index].ref_frame[0] == INTRA_FRAME)