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Make external sub8x8 block mode info conformable coding decisions

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This commit converts the sub8x8 block mode info from external file
into proper format that conforms the bit-stream definitions. It
resolves an enc/dec mismatch issue in sub8x8 block coding used in
the inter frames.

Change-Id: Ie5717b19d0d06e0f525f9b7c7311abdd40f7885f
This commit is contained in:
Jingning Han
2014-07-15 12:35:04 -07:00
parent f297504f2d
commit 9e3965ae90
1 changed files with 34 additions and 0 deletions
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34
vp9/encoder/vp9_encodeframe.c
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@@ -592,6 +592,40 @@ static void mode_info_conversion(VP9_COMP *cpi, const TileInfo *const tile,
mbmi->mv[0].as_int = 0;
mbmi->mv[1].as_int = 0;
}
if (mbmi->sb_type < BLOCK_8X8) {
MODE_INFO *mi = xd->mi[0];
const int num_4x4_w = num_4x4_blocks_wide_lookup[mbmi->sb_type]; // 1 or 2
const int num_4x4_h = num_4x4_blocks_high_lookup[mbmi->sb_type]; // 1 or 2
int idx, idy;
for (idy = 0; idy < 2; idy += num_4x4_h) {
for (idx = 0; idx < 2; idx += num_4x4_w) {
const int j = idy * 2 + idx;
int ref;
const PREDICTION_MODE b_mode = mi->bmi[j].as_mode;
if (b_mode == NEARESTMV || b_mode == NEARMV) {
for (ref = 0; ref < 1 + has_second_ref(mbmi); ++ref) {
vp9_append_sub8x8_mvs_for_idx(cm, xd, tile, j, ref, mi_row, mi_col,
&nearest_mv, &near_mv);
mi->bmi[j].as_mv[ref].as_int = (b_mode == NEARESTMV) ?
nearest_mv.as_int : near_mv.as_int;
}
}
if (b_mode == ZEROMV)
for (ref = 0; ref < 1 + has_second_ref(mbmi); ++ref)
mi->bmi[j].as_mv[ref].as_int = 0;
if (num_4x4_h == 2)
mi->bmi[j + 2] = mi->bmi[j];
if (num_4x4_w == 2)
mi->bmi[j + 1] = mi->bmi[j];
}
}
mbmi->mode = mi->bmi[3].as_mode;
}
}
#endif