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Fix intra NxN chroma coefficients.

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- The NxN coefficients were being saved to the bottom right PU offset instead of
  the parent CU offset.
- Re-enable coefficient coding for chroma NxN.
This commit is contained in:
Ari Koivula 2014-01-28 11:51:43 +02:00
parent f1b2e9f603
commit de3c58862a
1 changed files with 10 additions and 16 deletions
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26
src/encoder.c
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@ -1619,8 +1619,9 @@ void encode_transform_tree(encoder_control *encoder, int32_t x_pu, int32_t y_pu,
}
}
// If luma is 4x4, do previous depths chroma after the last luma block.
if (depth <= MAX_DEPTH || (x_pu % 2 && y_pu % 2)) {
// If luma is 4x4, do chroma for the 8x8 luma area when handling the top
// left PU because the coordinates are correct.
if (depth <= MAX_DEPTH || (x_pu % 2 == 0 && y_pu % 2 == 0)) {
int chroma_depth = (depth == MAX_PU_DEPTH ? depth - 1 : depth);
int chroma_size = LCU_CHROMA_SIZE >> (chroma_depth * 2);
@ -1633,13 +1634,8 @@ void encode_transform_tree(encoder_control *encoder, int32_t x_pu, int32_t y_pu,
for (i = 0; i < chroma_size; i++) {
if (coeff_u[i] != 0) {
// Found one, we can break here
if (depth <= MAX_DEPTH) {
cur_cu->coeff_u = 1;
cur_cu->coeff_top_u[depth] = 1;
} else {
cur_cu->coeff_u = 0;
cur_cu->coeff_top_u[depth] = 0;
}
break;
}
}
@ -1647,13 +1643,8 @@ void encode_transform_tree(encoder_control *encoder, int32_t x_pu, int32_t y_pu,
for (i = 0; i < chroma_size; i++) {
if (coeff_v[i] != 0) {
// Found one, we can break here
if (depth <= MAX_DEPTH) {
cur_cu->coeff_v = 1;
cur_cu->coeff_top_v[depth] = 1;
} else {
cur_cu->coeff_v = 0;
cur_cu->coeff_top_v[depth] = 0;
}
break;
}
}
@ -1781,10 +1772,10 @@ void encode_transform_unit(encoder_control *encoder, int x_pu, int y_pu, int dep
}
orig_pos_u = &encoder->in.cur_pic->coeff_u[x + y * (encoder->in.width >> 1)];
orig_pos_v = &encoder->in.cur_pic->coeff_v[x + y * (encoder->in.width >> 1)];
for (y = 0; y < (width>>1); y++) {
for (x = 0; x < (width>>1); x++) {
coeff_u[x+y*(width>>1)] = orig_pos_u[x];
coeff_v[x+y*(width>>1)] = orig_pos_v[x];
for (y = 0; y < (width_c); y++) {
for (x = 0; x < (width_c); x++) {
coeff_u[x+y*(width_c)] = orig_pos_u[x];
coeff_v[x+y*(width_c)] = orig_pos_v[x];
}
orig_pos_u += coeff_stride>>1;
orig_pos_v += coeff_stride>>1;
@ -1805,6 +1796,9 @@ void encode_transform_unit(encoder_control *encoder, int x_pu, int y_pu, int dep
scan_idx = SCAN_DIAG;
if (ctx_idx > 4 && ctx_idx < 7) { // if multiple scans supported for transform size
// mode is diagonal, except for 4x4 and 8x8, where:
// - angular 6-14 = vertical
// - angular 22-30 = horizontal
scan_idx = abs((int32_t) dir_mode - 26) < 5 ? 1 : (abs((int32_t)dir_mode - 10) < 5 ? 2 : 0);
}
}