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Merge "Cleaning up vp9_build_inter_predictor function."

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Dmitry Kovalev 2013-08-05 01:52:11 -07:00 committed by Gerrit Code Review
commit 319867d71c
1 changed files with 31 additions and 45 deletions
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76
vp9/common/vp9_reconinter.c
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@ -220,19 +220,19 @@ static INLINE int round_mv_comp_q4(int value) {
return (value < 0 ? value - 2 : value + 2) / 4;
}
static int mi_mv_pred_row_q4(const MODE_INFO *mi, int idx) {
return round_mv_comp_q4(mi->bmi[0].as_mv[idx].as_mv.row +
mi->bmi[1].as_mv[idx].as_mv.row +
mi->bmi[2].as_mv[idx].as_mv.row +
mi->bmi[3].as_mv[idx].as_mv.row);
static MV mi_mv_pred_q4(const MODE_INFO *mi, int idx) {
MV res = { round_mv_comp_q4(mi->bmi[0].as_mv[idx].as_mv.row +
mi->bmi[1].as_mv[idx].as_mv.row +
mi->bmi[2].as_mv[idx].as_mv.row +
mi->bmi[3].as_mv[idx].as_mv.row),
round_mv_comp_q4(mi->bmi[0].as_mv[idx].as_mv.col +
mi->bmi[1].as_mv[idx].as_mv.col +
mi->bmi[2].as_mv[idx].as_mv.col +
mi->bmi[3].as_mv[idx].as_mv.col) };
return res;
}
static int mi_mv_pred_col_q4(const MODE_INFO *mi, int idx) {
return round_mv_comp_q4(mi->bmi[0].as_mv[idx].as_mv.col +
mi->bmi[1].as_mv[idx].as_mv.col +
mi->bmi[2].as_mv[idx].as_mv.col +
mi->bmi[3].as_mv[idx].as_mv.col);
}
// TODO(jkoleszar): yet another mv clamping function :-(
MV clamp_mv_to_umv_border_sb(const MV *src_mv,
@ -299,44 +299,30 @@ static void build_inter_predictors(int plane, int block,
// dest
uint8_t *const dst = arg->dst[plane] + arg->dst_stride[plane] * y + x;
// motion vector
const MV *mv;
MV split_chroma_mv;
int_mv clamped_mv;
// TODO(jkoleszar): All chroma MVs in SPLITMV mode are taken as the
// same MV (the average of the 4 luma MVs) but we could do something
// smarter for non-4:2:0. Just punt for now, pending the changes to get
// rid of SPLITMV mode entirely.
const MV mv = mi->mbmi.sb_type < BLOCK_SIZE_SB8X8
? (plane == 0 ? mi->bmi[block].as_mv[which_mv].as_mv
: mi_mv_pred_q4(mi, which_mv))
: mi->mbmi.mv[which_mv].as_mv;
if (mi->mbmi.sb_type < BLOCK_SIZE_SB8X8) {
if (plane == 0) {
mv = &mi->bmi[block].as_mv[which_mv].as_mv;
} else {
// TODO(jkoleszar): All chroma MVs in SPLITMV mode are taken as the
// same MV (the average of the 4 luma MVs) but we could do something
// smarter for non-4:2:0. Just punt for now, pending the changes to get
// rid of SPLITMV mode entirely.
split_chroma_mv.row = mi_mv_pred_row_q4(mi, which_mv);
split_chroma_mv.col = mi_mv_pred_col_q4(mi, which_mv);
mv = &split_chroma_mv;
}
} else {
mv = &mi->mbmi.mv[which_mv].as_mv;
}
/* TODO(jkoleszar): This clamping is done in the incorrect place for the
* scaling case. It needs to be done on the scaled MV, not the pre-scaling
* MV. Note however that it performs the subsampling aware scaling so
* that the result is always q4.
*/
clamped_mv.as_mv = clamp_mv_to_umv_border_sb(mv, bwl, bhl,
xd->plane[plane].subsampling_x,
xd->plane[plane].subsampling_y,
xd->mb_to_left_edge,
xd->mb_to_top_edge,
xd->mb_to_right_edge,
xd->mb_to_bottom_edge);
// TODO(jkoleszar): This clamping is done in the incorrect place for the
// scaling case. It needs to be done on the scaled MV, not the pre-scaling
// MV. Note however that it performs the subsampling aware scaling so
// that the result is always q4.
const MV res_mv = clamp_mv_to_umv_border_sb(&mv, bwl, bhl,
xd->plane[plane].subsampling_x,
xd->plane[plane].subsampling_y,
xd->mb_to_left_edge,
xd->mb_to_top_edge,
xd->mb_to_right_edge,
xd->mb_to_bottom_edge);
scale->set_scaled_offsets(scale, arg->y + y, arg->x + x);
vp9_build_inter_predictor(pre, pre_stride,
dst, arg->dst_stride[plane],
&clamped_mv.as_mv, &xd->scale_factor[which_mv],
&res_mv, &xd->scale_factor[which_mv],
4 << pred_w, 4 << pred_h, which_mv,
&xd->subpix, MV_PRECISION_Q4);
}