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Merge "vp9: Code clean, move low temp var logic out of choose_partitioning."

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Jacky Chen 2016-06-24 22:00:49 +00:00 committed by Gerrit Code Review
commit 723e357ead
1 changed files with 61 additions and 50 deletions
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111
vp9/encoder/vp9_encodeframe.c
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@ -729,6 +729,65 @@ static int skin_sb_split(VP9_COMP *cpi, MACROBLOCK *x, const int low_res,
}
#endif
static void set_low_temp_var_flag(VP9_COMP *cpi, MACROBLOCK *x,
MACROBLOCKD *xd, v64x64 *vt,
int force_split[], int64_t thresholds[],
MV_REFERENCE_FRAME ref_frame_partition,
int mi_col, int mi_row) {
int i, j;
VP9_COMMON * const cm = &cpi->common;
const int mv_thr = cm->width > 640 ? 8 : 4;
// Check temporal variance for bsize >= 16x16, if LAST_FRAME was selected and
// int_pro mv is small. If the temporal variance is small set the flag
// variance_low for the block. The variance threshold can be adjusted, the
// higher the more aggressive.
if (ref_frame_partition == LAST_FRAME &&
(cpi->sf.short_circuit_low_temp_var == 1 ||
(xd->mi[0]->mv[0].as_mv.col < mv_thr &&
xd->mi[0]->mv[0].as_mv.col > -mv_thr &&
xd->mi[0]->mv[0].as_mv.row < mv_thr &&
xd->mi[0]->mv[0].as_mv.row > -mv_thr))) {
if (xd->mi[0]->sb_type == BLOCK_64X64 &&
(vt->part_variances).none.variance < (thresholds[0] >> 1)) {
x->variance_low[0] = 1;
} else if (xd->mi[0]->sb_type == BLOCK_64X32) {
for (i = 0; i < 2; i++) {
if (vt->part_variances.horz[i].variance < (thresholds[0] >> 2))
x->variance_low[i + 1] = 1;
}
} else if (xd->mi[0]->sb_type == BLOCK_32X64) {
for (i = 0; i < 2; i++) {
if (vt->part_variances.vert[i].variance < (thresholds[0] >> 2))
x->variance_low[i + 3] = 1;
}
} else {
for (i = 0; i < 4; i++) {
if (!force_split[i + 1]) {
// 32x32
if (vt->split[i].part_variances.none.variance <
(thresholds[1] >> 1))
x->variance_low[i + 5] = 1;
} else if (cpi->sf.short_circuit_low_temp_var == 2) {
int idx[4] = {0, 4, xd->mi_stride << 2, (xd->mi_stride << 2) + 4};
const int idx_str = cm->mi_stride * mi_row + mi_col + idx[i];
MODE_INFO **this_mi = cm->mi_grid_visible + idx_str;
// For 32x16 and 16x32 blocks, the flag is set on each 16x16 block
// inside.
if ((*this_mi)->sb_type == BLOCK_16X16 ||
(*this_mi)->sb_type == BLOCK_32X16 ||
(*this_mi)->sb_type == BLOCK_16X32) {
for (j = 0; j < 4; j++) {
if (vt->split[i].split[j].part_variances.none.variance <
(thresholds[2] >> 8))
x->variance_low[(i << 2) + j + 9] = 1;
}
}
}
}
}
}
}
// This function chooses partitioning based on the variance between source and
// reconstructed last, where variance is computed for down-sampled inputs.
static int choose_partitioning(VP9_COMP *cpi,
@ -1084,56 +1143,8 @@ static int choose_partitioning(VP9_COMP *cpi,
}
if (cpi->sf.short_circuit_low_temp_var) {
const int mv_thr = cm->width > 640 ? 8 : 4;
// Check temporal variance for bsize >= 16x16, if LAST_FRAME was selected
// and int_pro mv is small. If the temporal variance is small set the
// variance_low flag for the block. The variance threshold can be adjusted,
// the higher the more aggressive.
if (ref_frame_partition == LAST_FRAME &&
(cpi->sf.short_circuit_low_temp_var == 1 ||
(xd->mi[0]->mv[0].as_mv.col < mv_thr &&
xd->mi[0]->mv[0].as_mv.col > -mv_thr &&
xd->mi[0]->mv[0].as_mv.row < mv_thr &&
xd->mi[0]->mv[0].as_mv.row > -mv_thr))) {
if (xd->mi[0]->sb_type == BLOCK_64X64 &&
vt.part_variances.none.variance < (thresholds[0] >> 1)) {
x->variance_low[0] = 1;
} else if (xd->mi[0]->sb_type == BLOCK_64X32) {
for (j = 0; j < 2; j++) {
if (vt.part_variances.horz[j].variance < (thresholds[0] >> 2))
x->variance_low[j + 1] = 1;
}
} else if (xd->mi[0]->sb_type == BLOCK_32X64) {
for (j = 0; j < 2; j++) {
if (vt.part_variances.vert[j].variance < (thresholds[0] >> 2))
x->variance_low[j + 3] = 1;
}
} else {
for (i = 0; i < 4; i++) {
if (!force_split[i + 1]) {
// 32x32
if (vt.split[i].part_variances.none.variance <
(thresholds[1] >> 1))
x->variance_low[i + 5] = 1;
} else if (cpi->sf.short_circuit_low_temp_var == 2) {
int idx[4] = {0, 4, xd->mi_stride << 2, (xd->mi_stride << 2) + 4};
const int idx_str = cm->mi_stride * mi_row + mi_col + idx[i];
MODE_INFO **this_mi = cm->mi_grid_visible + idx_str;
// For 32x16 and 16x32 blocks, the flag is set on each 16x16 block
// inside.
if ((*this_mi)->sb_type == BLOCK_16X16 ||
(*this_mi)->sb_type == BLOCK_32X16 ||
(*this_mi)->sb_type == BLOCK_16X32) {
for (j = 0; j < 4; j++) {
if (vt.split[i].split[j].part_variances.none.variance <
(thresholds[2] >> 8))
x->variance_low[(i << 2) + j + 9] = 1;
}
}
}
}
}
}
set_low_temp_var_flag(cpi, x, xd, &vt, force_split, thresholds,
ref_frame_partition, mi_col, mi_row);
}
return 0;
}