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Refactor kvz_filter_deblock_lcu.

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Moves code for filtering the rightmost 4 pixels of an LCU to a separate
function filter_deblock_lcu_rightmost.
This commit is contained in:
Arttu Ylä-Outinen 2015-12-11 12:28:39 +02:00
parent 21ca74fe86
commit e203883f3d
1 changed files with 40 additions and 25 deletions
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65
src/filter.c
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@ -617,6 +617,45 @@ static void filter_deblock_lcu_inside(encoder_state_t * const state,
}
/**
* \brief Filter rightmost 4 pixels of the horizontal egdes of an LCU.
*
* \param state encoder state
* \param x_px x-coordinate of the *right* edge of the LCU in pixels
* \param y_px y-coordinate of the top edge of the LCU in pixels
*/
static void filter_deblock_lcu_rightmost(encoder_state_t * const state,
int32_t x_px,
int32_t y_px)
{
// Luma
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) {
// 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, 4, EDGE_HOR, tu_boundary);
}
}
// Chroma
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 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) {
// 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);
}
}
}
/**
* \brief Deblock a single LCU without using data from right or down.
*
@ -646,31 +685,7 @@ void kvz_filter_deblock_lcu(encoder_state_t * const state, int x_px, int y_px)
{
filter_deblock_lcu_inside(state, x_px, y_px, EDGE_VER);
if (x_px > 0) {
// Luma
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) {
// 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, 4, EDGE_HOR, tu_boundary);
}
}
// Chroma
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 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) {
// 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_lcu_rightmost(state, x_px, y_px);
}
filter_deblock_lcu_inside(state, x_px, y_px, EDGE_HOR);
}