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[isp] Fix error in last sig coeff function call. Height was not used. Fix cbf writing. Fix transform skip flag writing.

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siivonek 2022-08-31 12:28:57 +03:00 committed by Marko Viitanen
parent 33ae02aae0
commit d050efcb87
3 changed files with 24 additions and 16 deletions
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24
src/encode_coding_tree.c
View file

@ -412,13 +412,13 @@ void uvg_encode_last_significant_xy(cabac_data_t * const cabac,
uint8_t type, uint8_t scan, double* bits_out)
{
const int index_x = uvg_math_floor_log2(width);
const int index_y = uvg_math_floor_log2(width);
const int index_y = uvg_math_floor_log2(height);
const int prefix_ctx[8] = { 0, 0, 0, 3, 6, 10, 15, 21 };
//ToDo: own ctx_offset and shift for X and Y
uint8_t ctx_offset_x = type ? 0 : prefix_ctx[index_x];
uint8_t ctx_offset_y = type ? 0 : prefix_ctx[index_y];
uint8_t shift_x = type ? CLIP(0, 2, width >> 3) : (index_x + 1) >> 2;
uint8_t shift_y = type ? CLIP(0, 2, width >> 3) : (index_y + 1) >> 2;
uint8_t shift_y = type ? CLIP(0, 2, height >> 3) : (index_y + 1) >> 2;
double bits = 0;
cabac_ctx_t *base_ctx_x = (type ? cabac->ctx.cu_ctx_last_x_chroma : cabac->ctx.cu_ctx_last_x_luma);
@ -557,7 +557,7 @@ static void encode_transform_unit(
// CoeffNxN
// Residual Coding
if(state->encoder_control->cfg.trskip_enable && width <= (1 << state->encoder_control->cfg.trskip_max_size)) {
if(state->encoder_control->cfg.trskip_enable && width <= (1 << state->encoder_control->cfg.trskip_max_size && !(cur_pu->type == CU_INTRA && cur_pu->intra.isp_mode != ISP_MODE_NO_ISP))) {
cabac->cur_ctx = &cabac->ctx.transform_skip_model_luma;
CABAC_BIN(cabac, cur_pu->tr_idx == MTS_SKIP, "transform_skip_flag");
DBG_YUVIEW_VALUE(state->frame->poc, DBG_YUVIEW_TR_SKIP, x, y, width, width, (cur_pu->tr_idx == MTS_SKIP) ? 1 : 0);
@ -619,7 +619,8 @@ static void encode_transform_coeff(
bool only_chroma,
lcu_coeff_t* coeff,
enum uvg_tree_type tree_type,
bool last_split) // Always true except when writing sub partition coeffs (ISP)
bool last_split,
int *luma_cbf_ctx) // Always true except when writing sub partition coeffs (ISP)
{
cabac_data_t * const cabac = &state->cabac;
const int x = cu_loc->x;
@ -706,7 +707,7 @@ static void encode_transform_coeff(
cu_loc_t loc;
uvg_cu_loc_ctor(&loc, (x + i * split_width), (y + j * split_height), width >> 1, height >> 1);
encode_transform_coeff(state, &loc, depth + 1, tr_depth + 1, cb_flag_u, cb_flag_v, only_chroma, coeff, tree_type, true);
encode_transform_coeff(state, &loc, depth + 1, tr_depth + 1, cb_flag_u, cb_flag_v, only_chroma, coeff, tree_type, true, luma_cbf_ctx);
}
}
return;
@ -718,8 +719,9 @@ static void encode_transform_coeff(
// - we have chroma coefficients at this level
// When it is not present, it is inferred to be 1.
if ((cur_cu->type == CU_INTRA || tr_depth > 0 || cb_flag_u || cb_flag_v) && !only_chroma && tree_type != UVG_CHROMA_T) {
cabac->cur_ctx = &(cabac->ctx.qt_cbf_model_luma[0]);
cabac->cur_ctx = &(cabac->ctx.qt_cbf_model_luma[*luma_cbf_ctx]);
CABAC_BIN(cabac, cb_flag_y, "cbf_luma");
*luma_cbf_ctx = 2 + cb_flag_y;
}
if (cb_flag_y | cb_flag_u | cb_flag_v) {
@ -1613,7 +1615,8 @@ void uvg_encode_coding_tree(
}
// Code (possible) coeffs to bitstream
if (cbf) {
encode_transform_coeff(state, &cu_loc, depth, 0, 0, 0, 0, coeff, tree_type, true);
int luma_cbf_ctx = 0;
encode_transform_coeff(state, &cu_loc, depth, 0, 0, 0, 0, coeff, tree_type, true, &luma_cbf_ctx);
}
encode_mts_idx(state, cabac, cur_cu);
@ -1628,6 +1631,7 @@ void uvg_encode_coding_tree(
if (state->encoder_control->chroma_format != UVG_CSP_400 && depth != 4 && tree_type == UVG_BOTH_T) {
encode_chroma_intra_cu(cabac, cur_cu, state->encoder_control->cfg.cclm, NULL);
}
int luma_cbf_ctx = 0;
if (tree_type != UVG_CHROMA_T) {
// Cycle through sub partitions if ISP enabled.
@ -1635,14 +1639,14 @@ void uvg_encode_coding_tree(
// Small blocks are split only twice.
int split_type = cur_cu->intra.isp_mode;
int split_limit = split_type == ISP_MODE_NO_ISP ? 1 : uvg_get_isp_split_num(cu_width, cu_height, split_type);
luma_cbf_ctx = split_limit != 1 ? 2 : 0;
for (int i = 0; i < split_limit; ++i) {
cu_loc_t split_loc;
uvg_get_isp_split_loc(&split_loc, x, y, cu_width, cu_height, i, split_type);
// Check if last split to write chroma
bool last_split = (i + 1) == split_limit;
encode_transform_coeff(state, &split_loc, depth, 0, 0, 0, 0, coeff, tree_type, last_split);
encode_transform_coeff(state, &split_loc, depth, 0, 0, 0, 0, coeff, tree_type, last_split, &luma_cbf_ctx);
}
}
@ -1661,7 +1665,7 @@ void uvg_encode_coding_tree(
tmp->violates_lfnst_constrained_luma = false;
tmp->violates_lfnst_constrained_chroma = false;
tmp->lfnst_last_scan_pos = false;
encode_transform_coeff(state, &cu_loc, depth, 0, 0, 0, 1, coeff, tree_type, true);
encode_transform_coeff(state, &cu_loc, depth, 0, 0, 0, 1, coeff, tree_type, true, &luma_cbf_ctx);
// Write LFNST only once for single tree structure
encode_lfnst_idx(state, cabac, tmp, x, y, depth, cu_width, cu_height, tree_type, COLOR_UV);
}

14
src/search.c
View file

@ -369,11 +369,13 @@ double uvg_cu_rd_cost_luma(const encoder_state_t *const state,
}
}
else {
cabac_ctx_t* ctx = &(cabac->ctx.qt_cbf_model_luma[0]);
// TODO: 8x4 CUs
for (int i = 0; i < 4; i++) {
int luma_ctx = 2;
if (i != 3 && isp_cbf != 0x8) {
CABAC_FBITS_UPDATE(cabac, ctx, (isp_cbf >> i) & 1, tr_tree_bits, "cbf_y_search");
const int flag = (isp_cbf >> i) & 1;
CABAC_FBITS_UPDATE(cabac, &(cabac->ctx.qt_cbf_model_luma[luma_ctx]), flag, tr_tree_bits, "cbf_y_search");
luma_ctx = 2 + flag;
}
}
}
@ -598,11 +600,13 @@ static double cu_rd_cost_tr_split_accurate(
}
}
else {
cabac_ctx_t* ctx = &(cabac->ctx.qt_cbf_model_luma[0]);
// TODO: 8x4 CUs
for (int i = 0; i < 4; i++) {
int luma_ctx = 2;
if (i != 3 && isp_cbf != 0x8) {
CABAC_FBITS_UPDATE(cabac, ctx, (isp_cbf >> i) & 1, tr_tree_bits, "cbf_y_search");
const int flag = (isp_cbf >> i) & 1;
CABAC_FBITS_UPDATE(cabac, &(cabac->ctx.qt_cbf_model_luma[luma_ctx]), flag, tr_tree_bits, "cbf_y_search");
luma_ctx = 2 + flag;
}
}
}
@ -1147,7 +1151,7 @@ static double search_cu(
cu_loc_t isp_loc;
uvg_get_isp_split_loc(&isp_loc, x, y, cu_width, cu_height, i, split_type);
//search_data->best_isp_cbfs |= cbf_is_set(cur_cu->cbf, depth, COLOR_Y) << (i++);
cu_info_t* split_cu = LCU_GET_CU_AT_PX(lcu, isp_loc.x, isp_loc.y);
cu_info_t* split_cu = LCU_GET_CU_AT_PX(lcu, isp_loc.x % LCU_WIDTH, isp_loc.y % LCU_WIDTH);
bool cur_cbf = (intra_search.best_isp_cbfs >> i) & 1;
cbf_clear(&split_cu->cbf, depth, COLOR_Y);
if (cur_cbf) {

2
src/strategies/generic/encode_coding_tree-generic.c
View file

@ -126,7 +126,7 @@ void uvg_encode_coeff_nxn_generic(encoder_state_t * const state,
last_coeff_x,
last_coeff_y,
width,
width,
height,
color,
scan_mode,
bits_out);