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[mtt] Early terminations for all intra

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This commit is contained in:
Joose Sainio 2023-01-04 09:34:34 +02:00
parent 7fe5476be1
commit 25ab38f1ff
1 changed files with 52 additions and 21 deletions
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73
src/search.c
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@ -1158,6 +1158,38 @@ static void mark_deblocking(const cu_loc_t* const cu_loc, const cu_loc_t* const
}
}
static bool check_for_early_termission(const int cu_width, const int cu_height, cu_info_t* cur_cu, int x_local, int y_local, bool improved[6], int cbf, lcu_t* split_lcu, int split_type)
{
// Best no split has no residual and same direction bt didn't improve so don't try tt
// 3.11
if (
!cbf && ((!improved[BT_VER_SPLIT] && split_type == TT_VER_SPLIT) ||
(!improved[BT_HOR_SPLIT] && split_type == TT_HOR_SPLIT)))
return true;
// 3.8
if (split_type == TT_HOR_SPLIT) {
bool can_skip = true;
for (int x_scu = x_local; x_scu < x_local + cu_width; x_scu += 4) {
can_skip &=
LCU_GET_CU_AT_PX(&split_lcu[BT_HOR_SPLIT - 1], x_scu, y_local)->log2_height == cur_cu->log2_height - 1 &&
LCU_GET_CU_AT_PX(&split_lcu[BT_HOR_SPLIT - 1], x_scu, y_local + cu_height / 2)->log2_height == cur_cu->log2_height - 1;
}
if (can_skip) return true;
}
if (split_type == TT_VER_SPLIT) {
bool can_skip = true;
for (int y_scu = y_local; y_scu < y_local + cu_height; y_scu += 4) {
can_skip &=
LCU_GET_CU_AT_PX(&split_lcu[BT_VER_SPLIT - 1], x_local, y_scu)->log2_width == cur_cu->log2_width - 1 &&
LCU_GET_CU_AT_PX(&split_lcu[BT_VER_SPLIT - 1], x_local + cu_width / 2, y_scu)->log2_width == cur_cu->log2_width - 1;
}
if (can_skip) return true;
}
return false;
}
/**
* Search every mode from 0 to MAX_PU_DEPTH and return cost of best mode.
* - The recursion is started at depth 0 and goes in Z-order to MAX_PU_DEPTH.
@ -1623,6 +1655,12 @@ static double search_cu(
// It is ok to interrupt the search as soon as it is known that
// the split costs at least as much as not splitting.
int cbf = cbf_is_set_any(cur_cu->cbf);
// 3.13
if ((cu_height < 32 || cu_width < 32) && cur_cu->type != CU_NOTSET && !cbf && split_tree.mtt_depth > 1 && tree_type != UVG_CHROMA_T) {
can_split_cu = false;
}
if (can_split_cu && (cur_cu->type == CU_NOTSET || cbf || state->encoder_control->cfg.cu_split_termination == UVG_CU_SPLIT_TERMINATION_OFF || true)) {
lcu_t * split_lcu = MALLOC(lcu_t, 5);
enum split_type best_split = 0;
@ -1637,24 +1675,16 @@ static double search_cu(
|| (tree_type == UVG_CHROMA_T && split_type == BT_HOR_SPLIT && cu_loc->chroma_height == 4))
continue;
// Best no split has no residual and same direction bt didn't improve so don't try tt
if (
!cbf && ((!improved[BT_VER_SPLIT] && split_type == TT_VER_SPLIT) ||
(!improved[BT_HOR_SPLIT] && split_type == TT_HOR_SPLIT)))
continue;
if (split_type == TT_HOR_SPLIT) {
if (LCU_GET_CU_AT_PX(&split_lcu[BT_HOR_SPLIT - 1], x_local, y_local)->log2_height == cur_cu->log2_height - 1 &&
LCU_GET_CU_AT_PX(&split_lcu[BT_HOR_SPLIT - 1], x_local, y_local + luma_height / 2)->log2_height == cur_cu->log2_height - 1) {
continue;
}
}
if (split_type == TT_VER_SPLIT) {
if (LCU_GET_CU_AT_PX(&split_lcu[BT_VER_SPLIT - 1], x_local, y_local)->log2_width == cur_cu->log2_width - 1 &&
LCU_GET_CU_AT_PX(&split_lcu[BT_VER_SPLIT - 1], x_local + luma_width / 2, y_local)->log2_width == cur_cu->log2_width - 1) {
continue;
}
}
if (check_for_early_termission(
cu_width,
cu_height,
cur_cu,
x_local,
y_local,
improved,
cbf,
split_lcu,
split_type)) continue;
double split_cost = 0.0;
memcpy(&state->search_cabac, &pre_search_cabac, sizeof(post_seach_cabac));
@ -1698,6 +1728,7 @@ static double search_cu(
);
}
// 3.9
const double factor = state->qp > 30 ? 1.1 : 1.075;
if (split_bits * state->frame->lambda + cost / factor > cost) continue;
@ -1712,7 +1743,8 @@ static double search_cu(
state->search_cabac.update = 0;
split_cost += split_bits * state->lambda;
bool stop_to_qt = split_type == QT_SPLIT;
// 3.7
bool stop_to_qt = false;
cu_loc_t new_cu_loc[4];
uint8_t separate_chroma = 0;
@ -1730,11 +1762,10 @@ static double search_cu(
if (split_type == QT_SPLIT) {
const cu_info_t * const t = LCU_GET_CU_AT_PX(&split_lcu[0], new_cu_loc[split].local_x, new_cu_loc[split].local_y);
stop_to_qt &= t->log2_height == cur_cu->log2_height - 1 && t->log2_width == cur_cu->log2_width;
stop_to_qt |= GET_SPLITDATA(t, depth + 1) == QT_SPLIT;
}
if (split_cost > cost || split_cost > best_split_cost) {
stop_to_qt = false;
break;
}
}