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Subpel search cleanups and enhancements

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- Some fixes to surface fit.
- Returns variance function as cost rather than sad in the
  pattern search and diamond search functions. Only
  vp9_pattern_search_sad function used in bigdia search
  uses sad as integer 1-away costs.
- Deploys SUBPEL_TREE_PRUNED_MORE for speed 4+.

Results:
derf [Speed 3]: About +0.036% in coding efficiency without any
discernible speed loss.
derf [Speed 4]: About 2-3% faster at -0.199% loss in coding efficiency.
derf [Speed 5]: About 3-4% faster at -0.149% loss in coding efficiency.

Change-Id: I8462f94f6adb46966ca964f2bd0400977357fd63
This commit is contained in:
Deb Mukherjee
2014-10-07 02:48:08 -07:00
parent cfc337aae8
commit d78dbff09a
9 changed files with 194 additions and 187 deletions
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6
vp9/encoder/vp9_pickmode.c
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@@ -132,7 +132,7 @@ static int combined_motion_search(VP9_COMP *cpi, MACROBLOCK *x,
const int tmp_row_min = x->mv_row_min;
const int tmp_row_max = x->mv_row_max;
int rv = 0;
int sad_list[5];
int cost_list[5];
const YV12_BUFFER_CONFIG *scaled_ref_frame = vp9_get_scaled_ref_frame(cpi,
ref);
if (cpi->common.show_frame &&
@@ -160,7 +160,7 @@ static int combined_motion_search(VP9_COMP *cpi, MACROBLOCK *x,
mvp_full.row >>= 3;
vp9_full_pixel_search(cpi, x, bsize, &mvp_full, step_param, sadpb,
cond_sad_list(cpi, sad_list),
cond_cost_list(cpi, cost_list),
&ref_mv, &tmp_mv->as_mv, INT_MAX, 0);
x->mv_col_min = tmp_col_min;
@@ -187,7 +187,7 @@ static int combined_motion_search(VP9_COMP *cpi, MACROBLOCK *x,
&cpi->fn_ptr[bsize],
cpi->sf.mv.subpel_force_stop,
cpi->sf.mv.subpel_iters_per_step,
cond_sad_list(cpi, sad_list),
cond_cost_list(cpi, cost_list),
x->nmvjointcost, x->mvcost,
&dis, &x->pred_sse[ref], NULL, 0, 0);
x->pred_mv[ref] = tmp_mv->as_mv;