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Don't dering superblocks that have deringing disabled

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Doesn't change the output, but avoids useless deringing with threshold=0

Change-Id: I69f3e54abad2d2493cfbc76c188ad7d190f0aeff
This commit is contained in:
Jean-Marc Valin
2016-10-07 15:03:39 -04:00
committed by Yaowu Xu
parent 98e9ce923b
commit 3cfec90d33
1 changed files with 11 additions and 8 deletions
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19
av1/common/dering.c
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@@ -98,19 +98,22 @@ void av1_dering_frame(YV12_BUFFER_CONFIG *frame, AV1_COMMON *cm,
int nhb, nvb;
nhb = AOMMIN(MAX_MIB_SIZE, cm->mi_cols - MAX_MIB_SIZE * sbc);
nvb = AOMMIN(MAX_MIB_SIZE, cm->mi_rows - MAX_MIB_SIZE * sbr);
level = compute_level_from_index(
global_level, cm->mi_grid_visible[MAX_MIB_SIZE * sbr * cm->mi_stride +
MAX_MIB_SIZE * sbc]
->mbmi.dering_gain);
if (level == 0 || sb_all_skip(cm, sbr * MAX_MIB_SIZE, sbc * MAX_MIB_SIZE))
continue;
for (pli = 0; pli < 3; pli++) {
int16_t dst[MAX_MIB_SIZE * MAX_MIB_SIZE * 8 * 8];
int threshold;
level = compute_level_from_index(
global_level,
cm->mi_grid_visible[MAX_MIB_SIZE * sbr * cm->mi_stride +
MAX_MIB_SIZE * sbc]
->mbmi.dering_gain);
/* FIXME: This is a temporary hack that uses more conservative
deringing for chroma. */
if (pli) level = (level * 5 + 4) >> 3;
if (sb_all_skip(cm, sbr * MAX_MIB_SIZE, sbc * MAX_MIB_SIZE)) continue;
threshold = level << coeff_shift;
if (pli)
threshold = (level * 5 + 4) >> 3 << coeff_shift;
else
threshold = level << coeff_shift;
if (threshold == 0) continue;
od_dering(dst, MAX_MIB_SIZE * bsize[pli],
&src[pli][sbr * stride * bsize[pli] * MAX_MIB_SIZE +
sbc * bsize[pli] * MAX_MIB_SIZE],