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vp9: Use nonrd_pick_partition on scene-cut, for speed 5 vbr mode.

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On scene-cut detected frames (i.e., high_source_sad = 1), use
nonrd_pick_partition (over choose_part + select_part), as
the nonrd_pick partitioning is generally better.

Small positive increase in metrics on ytlive set (~0.5 - 1%).
Negligle overall speed decrease, as its only used on scene-cut frames.

Only affects 1 pass vbr mode, speed = 5.

Change-Id: I07c89cbdc75f5bb16eb8e0e2773ead0980d2de5c
This commit is contained in:
Marco 2016-06-08 13:03:29 -07:00
parent d00aaa9c12
commit 3fc01f95da
1 changed files with 8 additions and 2 deletions
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10
vp9/encoder/vp9_encodeframe.c
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@ -3797,8 +3797,14 @@ static void encode_nonrd_sb_row(VP9_COMP *cpi,
break;
case REFERENCE_PARTITION:
set_offsets(cpi, tile_info, x, mi_row, mi_col, BLOCK_64X64);
if (cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ && cm->seg.enabled &&
xd->mi[0]->segment_id) {
// Use nonrd_pick_partition on scene-cut for VBR, or on qp-segment
// if cyclic_refresh is enabled.
// nonrd_pick_partition does not support 4x4 partition, so avoid it
// on key frame for now.
if ((cpi->oxcf.rc_mode == VPX_VBR && cpi->rc.high_source_sad &&
cm->frame_type != KEY_FRAME) ||
(cpi->oxcf.aq_mode == CYCLIC_REFRESH_AQ && cm->seg.enabled &&
xd->mi[0]->segment_id)) {
// Use lower max_partition_size for low resoultions.
if (cm->width <= 352 && cm->height <= 288)
x->max_partition_size = BLOCK_32X32;