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Add initial max filter length and large block stuff

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This commit is contained in:
Jaakko Laitinen 2020-12-07 18:54:43 +02:00
parent 03dade8246
commit 5a90deb678
1 changed files with 88 additions and 16 deletions
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104
src/filter.c
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@ -314,7 +314,8 @@ static INLINE bool use_strong_filtering(const kvz_pixel const* b0, const kvz_pix
const int_fast32_t dp0, const int_fast32_t dq0,
const int_fast32_t dp3, const int_fast32_t dq3,
const int32_t tc, const int32_t beta,
const bool isSidePLarge, const bool isSideQLarge)
const bool isSidePLarge, const bool isSideQLarge,
const uint8_t max_filter_length_P, const uint8_t max_filter_length_Q)
{
if (isSidePLarge || isSideQLarge) {
return false; //TODO: add proper implementation
@ -504,12 +505,28 @@ static void filter_deblock_edge_luma(encoder_state_t * const state,
if (strength == 0) continue;
bool is_side_P_large = false;
bool is_side_Q_large = false;
uint8_t max_filter_length_P = 7; //TODO: Get actual max filter length
uint8_t max_filter_length_Q = 7;
if (max_filter_length_P > 3) {
is_side_P_large = dir == EDGE_HOR && y % LCU_WIDTH == 0 ? false : true;
//TODO: Add affine/ATMVP related stuff
/*if (max_filter_length_P > 5 && cu_p->affine) {
max_filter_length_P = MIN(max_filter_length_P, 5);
}*/
}
if (max_filter_length_Q > 3) {
is_side_Q_large = true;
}
// +-- edge_src
// v
// line0 p3 p2 p1 p0 q0 q1 q2 q3
kvz_pixel *edge_src = &src[block_idx * 4 * y_stride];
// Gather the lines of pixels required for the filter on/off decision.
//TODO: May need to limit reach in small blocks?
kvz_pixel b[4][8];
gather_deblock_pixels(edge_src, x_stride, 0 * y_stride, 4, &b[0][0]);
gather_deblock_pixels(edge_src, x_stride, 3 * y_stride, 4, &b[3][0]);
@ -521,25 +538,80 @@ static void filter_deblock_edge_luma(encoder_state_t * const state,
int_fast32_t dp = dp0 + dp3;
int_fast32_t dq = dq0 + dq3;
if (dp + dq < beta) {
// Strong filtering flag checking. TODO: account for
int8_t sw = use_strong_filtering(b[0], b[3], dp0, dq0, dp3, dq3, tc, beta, 0, 0);
bool sw = false;
// Read lines 1 and 2. Weak filtering doesn't use the outermost pixels
// but let's give them anyway to simplify control flow.
gather_deblock_pixels(edge_src, x_stride, 1 * y_stride, 4, &b[1][0]);
gather_deblock_pixels(edge_src, x_stride, 2 * y_stride, 4, &b[2][0]);
if (is_side_P_large || is_side_Q_large) {
int_fast32_t dp0L = dp0;
int_fast32_t dq0L = dq0;
int_fast32_t dp3L = dp3;
int_fast32_t dq3L = dq3;
kvz_pixel b0L[8];
kvz_pixel b3L[8];
if (is_side_P_large) {
gather_deblock_pixels(edge_src - 5 * x_stride, x_stride, 0 * y_stride, 2, &b0L[0]);
gather_deblock_pixels(edge_src - 5 * x_stride, x_stride, 3 * y_stride, 2, &b3L[0]);
dp0L = (dp0L + abs(b0L[0] - 2 * b0L[1] + b0L[2]) + 1) >> 1;
dp3L = (dp3L + abs(b3L[0] - 2 * b3L[1] + b3L[2]) + 1) >> 1;
}
if (is_side_Q_large) {
gather_deblock_pixels(edge_src + 5 * x_stride, x_stride, 0 * y_stride, 2, &b0L[4]);
gather_deblock_pixels(edge_src + 5 * x_stride, x_stride, 3 * y_stride, 2, &b3L[4]);
dq0L = (dq0L + abs(b0L[5] - 2 * b0L[6] + b0L[7]) + 1) >> 1;
dq3L = (dq3L + abs(b3L[5] - 2 * b3L[6] + b3L[7]) + 1) >> 1;
}
int_fast32_t dpL = dp0L + dp3L;
int_fast32_t dqL = dq0L + dq3L;
for (int i = 0; i < 4; ++i) {
int filter_reach;
if (dpL + dqL < beta) {
sw = use_strong_filtering(b[0], b[3], dp0L, dq0L, dp3L, dq3L, tc, beta,
is_side_P_large, is_side_Q_large,
max_filter_length_P, max_filter_length_Q);
if (sw) {
filter_reach = kvz_filter_deblock_luma_strong(&b[i][0], tc);
} else {
bool p_2nd = dp < side_threshold;
bool q_2nd = dq < side_threshold;
filter_reach = kvz_filter_deblock_luma_weak(encoder, &b[i][0], tc, p_2nd, q_2nd);
for (int i = 0; i < 4; ++i) {
int filter_reach;
filter_reach = kvz_filter_deblock_luma_strong(&b[i][0], tc); //TODO: Adapt to large block filtering
scatter_deblock_pixels(&b[i][0], x_stride, i * y_stride, filter_reach, edge_src);
}
}
else {
is_side_P_large = false;
is_side_Q_large = false;
}
}
}
if (!sw)
{
if (dp + dq < beta) {
if (max_filter_length_P > 2 && max_filter_length_Q > 2) {
// Strong filtering flag checking.
sw = use_strong_filtering(b[0], b[3], dp0, dq0, dp3, dq3, tc, beta,
is_side_P_large, is_side_Q_large,
max_filter_length_P, max_filter_length_Q);
}
// Read lines 1 and 2. Weak filtering doesn't use the outermost pixels
// but let's give them anyway to simplify control flow.
gather_deblock_pixels(edge_src, x_stride, 1 * y_stride, 4, &b[1][0]);
gather_deblock_pixels(edge_src, x_stride, 2 * y_stride, 4, &b[2][0]);
for (int i = 0; i < 4; ++i) {
int filter_reach;
if (sw) {
filter_reach = kvz_filter_deblock_luma_strong(&b[i][0], tc);
} else {
bool p_2nd = false;
bool q_2nd = false;
if (max_filter_length_P > 1 && max_filter_length_Q > 1) {
p_2nd = dp < side_threshold;
q_2nd = dq < side_threshold;
}
filter_reach = kvz_filter_deblock_luma_weak(encoder, &b[i][0], tc, p_2nd, q_2nd);
}
scatter_deblock_pixels(&b[i][0], x_stride, i * y_stride, filter_reach, edge_src);
}
scatter_deblock_pixels(&b[i][0], x_stride, i * y_stride, filter_reach, edge_src);
}
}
}