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Use sub-pixel accuracy prediction non-RD mode

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This commit builds the actual prediction block in sub-pixel accuracy
and uses which to calculate SAD for non-RD mode decision. In the trail
run on pedestrian_area at 1080p, rtc speed -7 runtime goes from
23495 ms -> 25107 ms (7% slower). The compression performance is
improved by 20.57% for rtc test set.

Change-Id: I438589cd103fe99f1b50c2d1939ac6ca43fa0157
This commit is contained in:
Jingning Han 2014-02-25 16:12:35 -08:00
parent fd49e9678e
commit c0e99f84f9
1 changed files with 10 additions and 3 deletions
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13
vp9/encoder/vp9_pickmode.c
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@ -183,6 +183,8 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
BLOCK_SIZE bsize) {
MACROBLOCKD *xd = &x->e_mbd;
MB_MODE_INFO *mbmi = &xd->mi_8x8[0]->mbmi;
struct macroblock_plane *const p = &x->plane[0];
struct macroblockd_plane *const pd = &xd->plane[0];
const BLOCK_SIZE block_size = get_plane_block_size(bsize, &xd->plane[0]);
MB_PREDICTION_MODE this_mode, best_mode = ZEROMV;
MV_REFERENCE_FRAME ref_frame, best_ref_frame = LAST_FRAME;
@ -255,7 +257,14 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
continue;
}
dist = x->mode_sad[ref_frame][INTER_OFFSET(this_mode)];
mbmi->mode = this_mode;
mbmi->mv[0].as_int = frame_mv[this_mode][ref_frame].as_int;
vp9_build_inter_predictors_sby(xd, mi_row, mi_col, bsize);
dist = cpi->fn_ptr[bsize].sdf(p->src.buf, p->src.stride,
pd->dst.buf, pd->dst.stride, INT_MAX);
this_rd = rate + dist;
if (this_rd < best_rd) {
@ -274,8 +283,6 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
// Perform intra prediction search, if the best SAD is above a certain
// threshold.
if (best_rd > inter_mode_thresh) {
struct macroblock_plane *const p = &x->plane[0];
struct macroblockd_plane *const pd = &xd->plane[0];
for (this_mode = DC_PRED; this_mode <= DC_PRED; ++this_mode) {
vp9_predict_intra_block(xd, 0, b_width_log2(bsize),
mbmi->tx_size, this_mode,