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Perform deblocking on 4x4 grid instead of 8x8

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This commit is contained in:
Joose Sainio 2021-04-08 11:47:23 +03:00
parent 1aaa95601c
commit e521a59cd5
1 changed files with 11 additions and 11 deletions
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22
src/filter.c
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@ -1131,8 +1131,8 @@ static void filter_deblock_unit(encoder_state_t * const state,
if (rightmost_8px_of_lcu && !rightmost_8px_of_frame) {
// The last 8 pixels will be deblocked when processing the next LCU.
length = width - 8;
length_c = (width >> 1) - 4;
length = width - 4;
length_c = (width >> 1) - 2;
if (length == 0) return;
} else {
@ -1175,11 +1175,11 @@ static void filter_deblock_lcu_inside(encoder_state_t * const state,
const int end_x = MIN(x + LCU_WIDTH, state->tile->frame->width);
const int end_y = MIN(y + LCU_WIDTH, state->tile->frame->height);
for (int edge_y = y; edge_y < end_y; edge_y += 8) {
for (int edge_x = x; edge_x < end_x; edge_x += 8) {
for (int edge_y = y; edge_y < end_y; edge_y += 4) {
for (int edge_x = x; edge_x < end_x; edge_x += 4) {
bool tu_boundary = is_tu_boundary(state, edge_x, edge_y, dir);
if (tu_boundary || is_pu_boundary(state, edge_x, edge_y, dir)) {
filter_deblock_unit(state, edge_x, edge_y, 8, 8, dir, tu_boundary);
filter_deblock_unit(state, edge_x, edge_y, 4, 4, dir, tu_boundary);
}
}
}
@ -1198,14 +1198,14 @@ static void filter_deblock_lcu_rightmost(encoder_state_t * const state,
int32_t y_px)
{
// Luma
const int x = x_px - 8;
const int x = x_px - 4;
const int end = MIN(y_px + LCU_WIDTH, state->tile->frame->height);
for (int y = y_px; y < end; y += 8) {
for (int y = y_px; y < end; y += 4) {
// The top edge of the whole frame is not filtered.
bool tu_boundary = is_tu_boundary(state, x, y, EDGE_HOR);
bool pu_boundary = is_pu_boundary(state, x, y, EDGE_HOR);
if (y > 0 && (tu_boundary || pu_boundary)) {
filter_deblock_edge_luma(state, x, y, 8, EDGE_HOR, tu_boundary);
filter_deblock_edge_luma(state, x, y, 4, EDGE_HOR, tu_boundary);
}
}
@ -1213,14 +1213,14 @@ static void filter_deblock_lcu_rightmost(encoder_state_t * const state,
if (state->encoder_control->chroma_format != KVZ_CSP_400) {
const int x_px_c = x_px >> 1;
const int y_px_c = y_px >> 1;
const int x_c = x_px_c - 4;
const int x_c = x_px_c - 2;
const int end_c = MIN(y_px_c + LCU_WIDTH_C, state->tile->frame->height >> 1);
for (int y_c = y_px_c; y_c < end_c; y_c += 8) {
for (int y_c = y_px_c; y_c < end_c; y_c += 4) {
// The top edge of the whole frame is not filtered.
bool tu_boundary = is_tu_boundary(state, x_c << 1, y_c << 1, EDGE_HOR);
bool pu_boundary = is_pu_boundary(state, x_c << 1, y_c << 1, EDGE_HOR);
if (y_c > 0 && (tu_boundary || pu_boundary)) {
filter_deblock_edge_chroma(state, x_c, y_c, 4, EDGE_HOR, tu_boundary);
filter_deblock_edge_chroma(state, x_c, y_c, 2, EDGE_HOR, tu_boundary);
}
}
}