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[mtt] search with depth 1 mtt kinda working

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This commit is contained in:
Joose Sainio 2022-11-28 11:24:55 +02:00
parent badb834ef9
commit e1df38bbd8
5 changed files with 122 additions and 96 deletions
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5
src/cu.c
View file

@ -399,11 +399,11 @@ int uvg_get_possible_splits(const encoder_state_t * const state,
splits[NO_SPLIT] = splits[QT_SPLIT] = splits[BT_HOR_SPLIT] = splits[TT_HOR_SPLIT] = splits[BT_VER_SPLIT] = splits[TT_VER_SPLIT] = true;
bool can_btt = split_tree.mtt_depth < max_btd;
const enum split_type last_split = (split_tree.split_tree >> (split_tree.current_depth * 3)) & 7;
const enum split_type last_split = (split_tree.split_tree >> (split_tree.current_depth * 3 - 3)) & 7;
const enum split_type parl_split = last_split == BT_HOR_SPLIT ? BT_HOR_SPLIT : BT_VER_SPLIT;
// don't allow QT-splitting below a BT split
if (split_tree.current_depth != 0 && last_split != QT_SPLIT && (width > 64 || height > 64)) splits[QT_SPLIT] = false;
if (split_tree.current_depth != 0 && last_split != QT_SPLIT /* && !(width > 64 || height > 64)*/) splits[QT_SPLIT] = false;
if (width <= min_qt_size) splits[QT_SPLIT] = false;
if (tree_type == UVG_CHROMA_T && width <= 4) splits[QT_SPLIT] = false;
@ -488,6 +488,7 @@ int uvg_count_available_edge_cus(const cu_loc_t* const cu_loc, const lcu_t* cons
int amount = 0;
if(left) {
if (cu_loc->local_y == 0 && cu_loc->local_x == 32 && cu_loc->height == 32 && cu_loc->width == 32) return 8;
while (LCU_GET_CU_AT_PX(lcu, cu_loc->local_x - TR_MIN_WIDTH, cu_loc->local_y + amount)->type != CU_NOTSET && (cu_loc->local_y + amount) < LCU_WIDTH) {
amount += TR_MIN_WIDTH;
}

8
src/encode_coding_tree.c
View file

@ -1614,7 +1614,7 @@ void uvg_encode_coding_tree(
((is_local_dual_tree &&
has_chroma) || tree_type == UVG_CHROMA_T) &&
tree_type != UVG_LUMA_T) {
int8_t luma_dir = uvg_get_co_located_luma_mode(chroma_loc->x, chroma_loc->y, chroma_loc->width, chroma_loc->height, NULL, frame->cu_array, UVG_CHROMA_T);
int8_t luma_dir = uvg_get_co_located_luma_mode(chroma_loc, cu_loc, cur_cu, NULL, frame->cu_array, UVG_CHROMA_T);
encode_chroma_intra_cu(cabac, cur_cu, state->encoder_control->cfg.cclm, luma_dir,NULL);
// LFNST constraints must be reset here. Otherwise the left over values will interfere when calculating new constraints
cu_info_t* tmp = (cu_info_t*)cur_cu;
@ -1764,9 +1764,9 @@ double uvg_mock_encode_coding_unit(
uvg_encode_intra_luma_coding_unit(state, cabac, cur_cu, cu_loc, lcu, &bits);
}
if((chroma_loc || tree_type == UVG_CHROMA_T) && state->encoder_control->chroma_format != UVG_CSP_400 && tree_type != UVG_LUMA_T) {
int8_t luma_dir = uvg_get_co_located_luma_mode(chroma_loc->x, chroma_loc->y, chroma_loc->width, chroma_loc->height,
tree_type != UVG_CHROMA_T ? lcu : NULL,
tree_type == UVG_CHROMA_T ? state->tile->frame->cu_array : NULL, is_separate_tree ? UVG_CHROMA_T : tree_type);
int8_t luma_dir = uvg_get_co_located_luma_mode(chroma_loc,cu_loc , cur_cu, tree_type != UVG_CHROMA_T ? lcu : NULL,
tree_type == UVG_CHROMA_T ? state->tile->frame->cu_array : NULL,
is_separate_tree ? UVG_CHROMA_T : tree_type);
encode_chroma_intra_cu(cabac, cur_cu, state->encoder_control->cfg.cclm, luma_dir, &bits);
}
}

18
src/intra.c
View file

@ -1603,22 +1603,26 @@ void uvg_intra_predict(
// This function works on luma coordinates
int8_t uvg_get_co_located_luma_mode(
int x,
int y,
int width,
int height,
const cu_loc_t* const chroma_loc,
const cu_loc_t* const cu_loc,
const cu_info_t* luma_cu,
const lcu_t* const lcu,
const cu_array_t* const cu_array,
enum uvg_tree_type tree_type)
{
int x = chroma_loc->x;
int y = chroma_loc->y;
assert((cu_array || lcu) && !(cu_array && lcu));
assert(tree_type != UVG_LUMA_T && "Luma only CU shouldn't need colocated luma CU");
if(tree_type == UVG_CHROMA_T) {
x += width >> 1;
y += height >> 1;
x += chroma_loc->width >> 1;
y += chroma_loc->height >> 1;
}
const cu_info_t* cu;
if(cu_array) {
if (lcu && cu_loc->x <= x && x < cu_loc->x + cu_loc->width && cu_loc->y <= y && y < cu_loc->y + cu_loc->height) {
cu = luma_cu;
}
else if(cu_array) {
cu = uvg_cu_array_at_const(cu_array, x, y);
}
else {

7
src/intra.h
View file

@ -152,10 +152,9 @@ void uvg_intra_recon_cu(
bool recon_chroma);
int8_t uvg_get_co_located_luma_mode(
int x,
int y,
int width,
int height,
const cu_loc_t* const chroma_loc,
const cu_loc_t* const cu_loc,
const cu_info_t* luma_cu,
const lcu_t* const lcu,
const cu_array_t* const cu_array,
enum uvg_tree_type tree_type);

180
src/search.c
View file

@ -1103,9 +1103,10 @@ static double search_cu(
intra_search.pred_cu.joint_cb_cr = 0;
if(tree_type == UVG_CHROMA_T || is_separate_tree) {
intra_mode = uvg_get_co_located_luma_mode(chroma_loc->x, chroma_loc->y, chroma_loc->width, chroma_loc->height,
is_separate_tree ? lcu : NULL,
tree_type == UVG_CHROMA_T ? state->tile->frame->cu_array : NULL, UVG_CHROMA_T);
intra_mode = uvg_get_co_located_luma_mode(
chroma_loc, cu_loc, &intra_search.pred_cu, is_separate_tree ? lcu : NULL,
tree_type == UVG_CHROMA_T ? state->tile->frame->cu_array : NULL,
UVG_CHROMA_T);
intra_search.pred_cu.type = CU_INTRA;
} else if (intra_search.pred_cu.intra.mip_flag) {
intra_mode = 0;
@ -1314,86 +1315,102 @@ static double search_cu(
fwrite(&state->search_cabac.ctx, 1, sizeof(state->search_cabac.ctx), state->encoder_control->cabac_debug_file);
}
bool can_split[6];
uvg_get_possible_splits(state, cu_loc, split_tree, tree_type, can_split);
can_split_cu &= can_split[1] || can_split[2] || can_split[3] || can_split[4] || can_split[5];
// Recursively split all the way to max search depth.
if (can_split_cu) {
const int split_type = depth == 2 ? TT_VER_SPLIT : QT_SPLIT;
split_tree_t new_split = {
split_tree.split_tree | split_type << (split_tree.current_depth * 3),
split_tree.current_depth + 1,
split_tree.mtt_depth + (split_type != QT_SPLIT),
0
};
double split_cost = 0.0;
int cbf = cbf_is_set_any(cur_cu->cbf);
lcu_t * split_lcu = MALLOC(lcu_t, 5);
enum split_type best_split = 0;
double best_split_cost = MAX_DOUBLE;
cabac_data_t post_seach_cabac;
cabac_data_t best_split_cabac;
memcpy(&post_seach_cabac, &state->search_cabac, sizeof(post_seach_cabac));
memcpy(&state->search_cabac, &pre_search_cabac, sizeof(post_seach_cabac));
for (int split_type = QT_SPLIT; split_type <= TT_VER_SPLIT; ++split_type) {
if (!can_split[split_type] || split_type != QT_SPLIT) continue;
split_tree_t new_split = {
split_tree.split_tree | split_type << (split_tree.current_depth * 3),
split_tree.current_depth + 1,
split_tree.mtt_depth + (split_type != QT_SPLIT),
0
};
double split_cost = 0.0;
int cbf = cbf_is_set_any(cur_cu->cbf);
memcpy(&state->search_cabac, &pre_search_cabac, sizeof(post_seach_cabac));
double split_bits = 0;
lcu_t split_lcu;
double split_bits = 0;
if (cur_cu->log2_height + cur_cu->log2_width > 4) {
if (cur_cu->log2_height + cur_cu->log2_width > 4) {
state->search_cabac.update = 1;
// Add cost of cu_split_flag.
const cu_info_t* left_cu = NULL, * above_cu = NULL;
if (x) {
if (x_local || tree_type != UVG_CHROMA_T) {
left_cu = LCU_GET_CU_AT_PX(lcu, x_local - 1, y_local);
state->search_cabac.update = 1;
// Add cost of cu_split_flag.
const cu_info_t* left_cu = NULL, * above_cu = NULL;
if (x) {
if (x_local || tree_type != UVG_CHROMA_T) {
left_cu = LCU_GET_CU_AT_PX(lcu, x_local - 1, y_local);
}
else {
left_cu = uvg_cu_array_at_const(state->tile->frame->chroma_cu_array, (x >> 1) - 1, y >> 1);
}
}
else {
left_cu = uvg_cu_array_at_const(state->tile->frame->chroma_cu_array, (x >> 1) - 1, y >> 1);
}
}
if (y) {
if (y_local || tree_type != UVG_CHROMA_T) {
above_cu = LCU_GET_CU_AT_PX(lcu, x_local, y_local - 1);
}
else {
above_cu = uvg_cu_array_at_const(state->tile->frame->chroma_cu_array, x >> 1, (y >> 1) - 1);
}
}
uvg_write_split_flag(
state,
&state->search_cabac,
left_cu,
above_cu,
tree_type != UVG_CHROMA_T ? cu_loc : &separate_tree_chroma_loc,
split_tree,
tree_type,
&split_bits);
}
state->search_cabac.update = 0;
split_cost += split_bits * state->lambda;
// If skip mode was selected for the block, skip further search.
// Skip mode means there's no coefficients in the block, so splitting
// might not give any better results but takes more time to do.
// It is ok to interrupt the search as soon as it is known that
// the split costs at least as much as not splitting.
if (cur_cu->type == CU_NOTSET || cbf || state->encoder_control->cfg.cu_split_termination == UVG_CU_SPLIT_TERMINATION_OFF) {
cu_loc_t new_cu_loc[4];
uint8_t separate_chroma = 0;
const int splits = uvg_get_split_locs(cu_loc, split_type, new_cu_loc, &separate_chroma);
initialize_partial_work_tree(lcu, &split_lcu, cu_loc, tree_type);
for (int split = 0; split < splits; ++split) {
new_split.part_index = split;
split_cost += search_cu(state,
&new_cu_loc[split], separate_chroma ? chroma_loc : &new_cu_loc[split],
&split_lcu,
tree_type, new_split,
!separate_chroma || split == splits - 1);
// If there is no separate chroma the block will always have chroma, otherwise it is the last block of the split that has the chroma
if (split_cost > cost) {
break;
if (y) {
if (y_local || tree_type != UVG_CHROMA_T) {
above_cu = LCU_GET_CU_AT_PX(lcu, x_local, y_local - 1);
}
else {
above_cu = uvg_cu_array_at_const(state->tile->frame->chroma_cu_array, x >> 1, (y >> 1) - 1);
}
}
split_tree_t count_tree = split_tree;
count_tree.split_tree = split_tree.split_tree | split_type << (split_tree.current_depth * 3);
uvg_write_split_flag(
state,
&state->search_cabac,
left_cu,
above_cu,
tree_type != UVG_CHROMA_T ? cu_loc : &separate_tree_chroma_loc,
count_tree,
tree_type,
&split_bits);
}
} else {
split_cost = INT_MAX;
state->search_cabac.update = 0;
split_cost += split_bits * state->lambda;
// If skip mode was selected for the block, skip further search.
// Skip mode means there's no coefficients in the block, so splitting
// might not give any better results but takes more time to do.
// It is ok to interrupt the search as soon as it is known that
// the split costs at least as much as not splitting.
if (cur_cu->type == CU_NOTSET || cbf || state->encoder_control->cfg.cu_split_termination == UVG_CU_SPLIT_TERMINATION_OFF) {
cu_loc_t new_cu_loc[4];
uint8_t separate_chroma = 0;
const int splits = uvg_get_split_locs(cu_loc, split_type, new_cu_loc, &separate_chroma);
initialize_partial_work_tree(lcu, &split_lcu[split_type - 1], cu_loc, tree_type);
for (int split = 0; split < splits; ++split) {
new_split.part_index = split;
split_cost += search_cu(state,
&new_cu_loc[split], separate_chroma ? chroma_loc : &new_cu_loc[split],
&split_lcu[split_type -1],
tree_type, new_split,
!separate_chroma || split == splits - 1);
// If there is no separate chroma the block will always have chroma, otherwise it is the last block of the split that has the chroma
if (split_cost > cost || split_cost > best_split_cost) {
break;
}
}
} else {
split_cost = INT_MAX;
}
if (split_cost < best_split_cost) {
best_split_cost = split_cost;
best_split = split_type;
memcpy(&best_split_cabac, &state->search_cabac, sizeof(cabac_data_t));
}
}
// If no search is not performed for this depth, try just the best mode
@ -1408,7 +1425,7 @@ static double search_cu(
&& tree_type == UVG_BOTH_T)
{
cu_info_t *cu_d1 = LCU_GET_CU_AT_PX(&split_lcu, x_local, y_local);
cu_info_t *cu_d1 = LCU_GET_CU_AT_PX(&split_lcu[best_split - 1], x_local, y_local);
// If the best CU in depth+1 is intra and the biggest it can be, try it.
if (cu_d1->type == CU_INTRA && (cu_d1->log2_height + 1 == cur_cu->log2_height || cu_d1->log2_width + 1 == cur_cu->log2_width)) {
@ -1456,10 +1473,14 @@ static double search_cu(
}
}
if (split_cost < cost) {
if (best_split_cost < cost) {
// Copy split modes to this depth.
cost = split_cost;
work_tree_copy_up(&split_lcu, lcu, state->encoder_control->cfg.jccr, tree_type, cu_loc, is_separate_tree && !has_chroma ? NULL : chroma_loc);
cost = best_split_cost;
memcpy(&state->search_cabac, &best_split_cabac, sizeof(best_split_cabac));
work_tree_copy_up(&split_lcu[best_split -1], lcu, state->encoder_control->cfg.jccr, tree_type, cu_loc, is_separate_tree && !has_chroma ? NULL : chroma_loc);
downsample_cclm_rec(
state, x, y, cu_width / 2, cu_height / 2, lcu->rec.y, lcu->left_ref.y[64]
);
#if UVG_DEBUG
//debug_split = 1;
#endif
@ -1483,6 +1504,7 @@ static double search_cu(
state, x, y, cu_width / 2, cu_height / 2, lcu->rec.y, lcu->left_ref.y[64]
);
}
FREE_POINTER(split_lcu);
} else if (cur_cu->log2_height + cur_cu->log2_width > 4) {
// Need to copy modes down since the lower level of the work tree is used
// when searching SMP and AMP blocks.
@ -1699,11 +1721,11 @@ void uvg_search_lcu(encoder_state_t * const state, const int x, const int y, con
double cost = search_cu(
state,
&start,
NULL,
&start,
&work_tree,
tree_type,
split_tree,
false);
true);
// Save squared cost for rate control.
if(state->encoder_control->cfg.rc_algorithm == UVG_LAMBDA) {
@ -1720,10 +1742,10 @@ void uvg_search_lcu(encoder_state_t * const state, const int x, const int y, con
if(state->frame->slicetype == UVG_SLICE_I && state->encoder_control->cfg.dual_tree) {
cost = search_cu(
state, &start,
NULL,
&start,
&work_tree, UVG_CHROMA_T,
split_tree,
false);
true);
if (state->encoder_control->cfg.rc_algorithm == UVG_LAMBDA) {
uvg_get_lcu_stats(state, x / LCU_WIDTH, y / LCU_WIDTH)->weight += cost * cost;