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Added top_coeff array to cu_info and implemented derivation logic

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This commit is contained in:
Marko Viitanen 2013-10-22 12:09:18 +03:00
parent 2efcc12678
commit bcb900371f
2 changed files with 35 additions and 29 deletions
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54
src/encoder.c
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@ -841,7 +841,6 @@ void encode_coding_tree(encoder_control *encoder, uint16_t x_ctb,
if (!border || (border_split_x && border_split_y)) {
encode_coding_tree(encoder, x_ctb + change, y_ctb + change, depth + 1);
}
return;
}
}
@ -1057,21 +1056,19 @@ void encode_coding_tree(encoder_control *encoder, uint16_t x_ctb,
inter_recon(encoder->ref->pics[0], x_ctb * CU_MIN_SIZE_PIXELS,
y_ctb * CU_MIN_SIZE_PIXELS, LCU_WIDTH >> depth, cur_cu->inter.mv,
encoder->in.cur_pic);
// Mark this block as "coded" (can be used for predictions..)
picture_set_block_coded(encoder->in.cur_pic, x_ctb, y_ctb, depth, 1);
encode_transform_tree(encoder,x_ctb, y_ctb, depth);
// Only need to signal coded block flag if not skipped or merged
// skip = no coded residual, merge = coded residual
if (!cur_cu->merged) {
cabac.ctx = &g_cu_qt_root_cbf_model;
CABAC_BIN(&cabac, cur_cu->coeff_y | cur_cu->coeff_u | cur_cu->coeff_v, "rqt_root_cbf");
CABAC_BIN(&cabac, cur_cu->coeff_top_y[depth] | cur_cu->coeff_top_u[depth] | cur_cu->coeff_top_v[depth], "rqt_root_cbf");
}
// Code (possible) coeffs to bitstream
if(cur_cu->coeff_y | cur_cu->coeff_u | cur_cu->coeff_v) {
if(cur_cu->coeff_top_y[depth] | cur_cu->coeff_top_u[depth] | cur_cu->coeff_top_v[depth]) {
encode_transform_coeff(encoder, x_ctb, y_ctb, depth, 0);
}
@ -1277,10 +1274,23 @@ void encode_transform_tree(encoder_control *encoder, int32_t x_cu,int32_t y_cu,
// Split transform and increase depth
if (depth == 0 || cur_cu->tr_depth > depth) {
uint8_t offset = 1<<(MAX_DEPTH-1-depth);
cu_info *cu_a = &encoder->in.cur_pic->cu_array[MAX_DEPTH][x_cu + offset + y_cu * (encoder->in.width_in_lcu << MAX_DEPTH)];
cu_info *cu_b = &encoder->in.cur_pic->cu_array[MAX_DEPTH][x_cu + (y_cu + offset) * (encoder->in.width_in_lcu << MAX_DEPTH)];
cu_info *cu_c = &encoder->in.cur_pic->cu_array[MAX_DEPTH][x_cu + offset + (y_cu + offset) * (encoder->in.width_in_lcu << MAX_DEPTH)];
encode_transform_tree(encoder, x_cu, y_cu, depth+1);
encode_transform_tree(encoder, x_cu + offset, y_cu, depth+1);
encode_transform_tree(encoder, x_cu, y_cu + offset, depth+1);
encode_transform_tree(encoder, x_cu + offset, y_cu + offset, depth+1);
// Derive coded coeff flags from the next depth
cur_cu->coeff_top_y[depth] = cur_cu->coeff_top_y[depth+1] | cu_a->coeff_top_y[depth+1] | cu_b->coeff_top_y[depth+1]
| cu_c->coeff_top_y[depth+1];
cur_cu->coeff_top_u[depth] = cur_cu->coeff_top_u[depth+1] | cu_a->coeff_top_u[depth+1] | cu_b->coeff_top_u[depth+1]
| cu_c->coeff_top_u[depth+1];
cur_cu->coeff_top_v[depth] = cur_cu->coeff_top_v[depth+1] | cu_a->coeff_top_v[depth+1] | cu_b->coeff_top_v[depth+1]
| cu_c->coeff_top_v[depth+1];
return;
}
@ -1301,7 +1311,7 @@ void encode_transform_tree(encoder_control *encoder, int32_t x_cu,int32_t y_cu,
pixel *pred_v = &encoder->in.cur_pic->pred_v[x_cu * (LCU_WIDTH >> (MAX_DEPTH + 1)) + (y_cu * (LCU_WIDTH >> (MAX_DEPTH + 1))) * (encoder->in.width >> 1)];
int32_t pred_stride = encoder->in.width;
coefficient coeff_y[LCU_WIDTH*LCU_WIDTH];
coefficient coeff_y[LCU_WIDTH*LCU_WIDTH<<2];
coefficient coeff_u[LCU_WIDTH*LCU_WIDTH>>2];
coefficient coeff_v[LCU_WIDTH*LCU_WIDTH>>2];
coefficient *orig_coeff_y = &encoder->in.cur_pic->coeff_y[x_cu * (LCU_WIDTH >> (MAX_DEPTH)) + (y_cu * (LCU_WIDTH >> (MAX_DEPTH))) * encoder->in.width];
@ -1450,7 +1460,7 @@ void encode_transform_tree(encoder_control *encoder, int32_t x_cu,int32_t y_cu,
for (i = 0; i < width * width; i++) {
if (coeff_y[i] != 0) {
// Found one, we can break here
cur_cu->coeff_y = 1;
cur_cu->coeff_top_y[depth] = cur_cu->coeff_y = 1;
break;
}
}
@ -1509,7 +1519,7 @@ void encode_transform_tree(encoder_control *encoder, int32_t x_cu,int32_t y_cu,
for (i = 0; i < width *width >> 2; i++) {
if (coeff_u[i] != 0) {
// Found one, we can break here
cur_cu->coeff_u = 1;
cur_cu->coeff_top_u[depth] = cur_cu->coeff_u = 1;
break;
}
}
@ -1533,7 +1543,7 @@ void encode_transform_tree(encoder_control *encoder, int32_t x_cu,int32_t y_cu,
for (i = 0; i < width *width >> 2; i++) {
if (coeff_v[i] != 0) {
// Found one, we can break here
cur_cu->coeff_v = 1;
cur_cu->coeff_top_v[depth] = cur_cu->coeff_v = 1;
break;
}
}
@ -1628,23 +1638,19 @@ void encode_transform_coeff(encoder_control *encoder, int32_t x_cu,int32_t y_cu,
if (encoder->in.video_format != FORMAT_400) {
uint8_t offset = 1<<(MAX_DEPTH-1-depth);
//cu_info *cur_cu_idx_2 = &encoder->in.cur_pic->cu_array[MAX_DEPTH][x_cu + offset + y_cu * (encoder->in.width_in_lcu << MAX_DEPTH)];
//cu_info *cur_cu_idx_3 = &encoder->in.cur_pic->cu_array[MAX_DEPTH][x_cu + (y_cu + offset) * (encoder->in.width_in_lcu << MAX_DEPTH)];
//cu_info *cur_cu_idx_4 = &encoder->in.cur_pic->cu_array[MAX_DEPTH][x_cu + offset + (y_cu + offset) * (encoder->in.width_in_lcu << MAX_DEPTH)];
// Non-zero chroma U Tcoeffs
int8_t cb_flag = (!split) ? cur_cu->coeff_u : cur_cu->coeff_u;//(cur_cu->coeff_u | cur_cu_idx_2->coeff_u | cur_cu_idx_3->coeff_u | cur_cu_idx_4->coeff_u);
int8_t cb_flag = (!split) ? cur_cu->coeff_u : cur_cu->coeff_top_u[depth];
cabac.ctx = &g_qt_cbf_model_chroma[tr_depth];
if (tr_depth == 0 /*|| ti->cb_top[1]*/) {
if (tr_depth == 0 || cur_cu->coeff_top_u[depth]) {
CABAC_BIN(&cabac, cb_flag, "cbf_chroma_u");
}
// Non-zero chroma V Tcoeffs
// NOTE: Using the same ctx as before
cb_flag = (!split) ? cur_cu->coeff_v : cur_cu->coeff_v;//(cur_cu->coeff_v | cur_cu_idx_2->coeff_v | cur_cu_idx_3->coeff_v | cur_cu_idx_4->coeff_v);
cb_flag = (!split) ? cur_cu->coeff_v : cur_cu->coeff_top_v[depth];
if (tr_depth == 0 /*|| ti->cb_top[2]*/) {
if (tr_depth == 0 || cur_cu->coeff_top_v[depth]) {
CABAC_BIN(&cabac, cb_flag, "cbf_chroma_v");
}
}
@ -1666,7 +1672,7 @@ void encode_transform_coeff(encoder_control *encoder, int32_t x_cu,int32_t y_cu,
{
coefficient coeff_y[LCU_WIDTH*LCU_WIDTH];
coefficient coeff_y[LCU_WIDTH*LCU_WIDTH+1];
coefficient coeff_u[LCU_WIDTH*LCU_WIDTH>>2];
coefficient coeff_v[LCU_WIDTH*LCU_WIDTH>>2];
int32_t coeff_stride = encoder->in.width;
@ -1820,7 +1826,7 @@ void encode_coeff_nxn(encoder_control *encoder, coefficient *coeff, uint8_t widt
if (coeff[pos_last] != 0) {
sig_coeffgroup_flag[(num_blk_side * (POSY >> shift) + (POSX >> shift))] = 1;
}
}
num_nonzero -= (coeff[pos_last] != 0) ? 1 : 0;
#undef POSY
@ -1885,7 +1891,7 @@ void encode_coeff_nxn(encoder_control *encoder, coefficient *coeff, uint8_t widt
log2_block_size, width, type);
cabac.ctx = &baseCtx[ctx_sig];
CABAC_BIN(&cabac, sig, "significant_coeff_flag");
}
}
if (sig) {
abs_coeff[num_non_zero] = abs(coeff[blk_pos]);
@ -1894,14 +1900,14 @@ void encode_coeff_nxn(encoder_control *encoder, coefficient *coeff, uint8_t widt
if (last_nz_pos_in_cg == -1) {
last_nz_pos_in_cg = scan_pos_sig;
}
}
first_nz_pos_in_cg = scan_pos_sig;
}
}
}
} else {
scan_pos_sig = sub_pos - 1;
}
}
if (num_non_zero > 0) {
int8_t sign_hidden = (last_nz_pos_in_cg - first_nz_pos_in_cg >=
@ -1912,7 +1918,7 @@ void encode_coeff_nxn(encoder_control *encoder, coefficient *coeff, uint8_t widt
if (c1 == 0) {
ctx_set++;
}
}
c1 = 1;

6
src/picture.h
View file

@ -64,9 +64,9 @@ typedef struct
int8_t coeff_u; //!< \brief is there coded coeffs U
int8_t coeff_v; //!< \brief is there coded coeffs V
int8_t coeff_top_y; //!< \brief is there coded coeffs Y in top level
int8_t coeff_top_u; //!< \brief is there coded coeffs U in top level
int8_t coeff_top_v; //!< \brief is there coded coeffs V in top level
int8_t coeff_top_y[MAX_DEPTH+1]; //!< \brief is there coded coeffs Y in top level
int8_t coeff_top_u[MAX_DEPTH+1]; //!< \brief is there coded coeffs U in top level
int8_t coeff_top_v[MAX_DEPTH+1]; //!< \brief is there coded coeffs V in top level
cu_info_intra intra;
cu_info_inter inter;
} cu_info;