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Merge "Speeding up reading of intra block modes."

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Dmitry Kovalev 2014-03-13 13:45:32 -07:00 committed by Gerrit Code Review
commit aa7ec14c9a
1 changed files with 42 additions and 42 deletions
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84
vp9/decoder/vp9_decodemv.c
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@ -166,6 +166,7 @@ static void read_intra_frame_mode_info(VP9_COMMON *const cm,
const MODE_INFO *above_mi = xd->mi_8x8[-cm->mode_info_stride];
const MODE_INFO *left_mi = xd->left_available ? xd->mi_8x8[-1] : NULL;
const BLOCK_SIZE bsize = mbmi->sb_type;
int i;
mbmi->segment_id = read_intra_segment_id(cm, xd, mi_row, mi_col, r);
mbmi->skip = read_skip(cm, xd, mbmi->segment_id, r);
@ -173,28 +174,28 @@ static void read_intra_frame_mode_info(VP9_COMMON *const cm,
mbmi->ref_frame[0] = INTRA_FRAME;
mbmi->ref_frame[1] = NONE;
if (bsize >= BLOCK_8X8) {
mbmi->mode = read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 0));
} else {
// Only 4x4, 4x8, 8x4 blocks
const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2
const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2
int idx, idy;
for (idy = 0; idy < 2; idy += num_4x4_h) {
for (idx = 0; idx < 2; idx += num_4x4_w) {
const int block = idy * 2 + idx;
const MB_PREDICTION_MODE mode =
read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, block));
mi->bmi[block].as_mode = mode;
if (num_4x4_h == 2)
mi->bmi[block + 2].as_mode = mode;
if (num_4x4_w == 2)
mi->bmi[block + 1].as_mode = mode;
}
}
mbmi->mode = mi->bmi[3].as_mode;
switch (bsize) {
case BLOCK_4X4:
for (i = 0; i < 4; ++i)
mi->bmi[i].as_mode =
read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, i));
mbmi->mode = mi->bmi[3].as_mode;
break;
case BLOCK_4X8:
mi->bmi[0].as_mode = mi->bmi[2].as_mode =
read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 0));
mi->bmi[1].as_mode = mi->bmi[3].as_mode = mbmi->mode =
read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 1));
break;
case BLOCK_8X4:
mi->bmi[0].as_mode = mi->bmi[1].as_mode =
read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 0));
mi->bmi[2].as_mode = mi->bmi[3].as_mode = mbmi->mode =
read_intra_mode(r, get_y_mode_probs(mi, above_mi, left_mi, 2));
break;
default:
mbmi->mode = read_intra_mode(r,
get_y_mode_probs(mi, above_mi, left_mi, 0));
}
mbmi->uv_mode = read_intra_mode(r, vp9_kf_uv_mode_prob[mbmi->mode]);
@ -324,30 +325,29 @@ static void read_intra_block_mode_info(VP9_COMMON *const cm, MODE_INFO *mi,
vp9_reader *r) {
MB_MODE_INFO *const mbmi = &mi->mbmi;
const BLOCK_SIZE bsize = mi->mbmi.sb_type;
int i;
mbmi->ref_frame[0] = INTRA_FRAME;
mbmi->ref_frame[1] = NONE;
if (bsize >= BLOCK_8X8) {
mbmi->mode = read_intra_mode_y(cm, r, size_group_lookup[bsize]);
} else {
// Only 4x4, 4x8, 8x4 blocks
const int num_4x4_w = num_4x4_blocks_wide_lookup[bsize]; // 1 or 2
const int num_4x4_h = num_4x4_blocks_high_lookup[bsize]; // 1 or 2
int idx, idy;
for (idy = 0; idy < 2; idy += num_4x4_h) {
for (idx = 0; idx < 2; idx += num_4x4_w) {
const int ib = idy * 2 + idx;
const int b_mode = read_intra_mode_y(cm, r, 0);
mi->bmi[ib].as_mode = b_mode;
if (num_4x4_h == 2)
mi->bmi[ib + 2].as_mode = b_mode;
if (num_4x4_w == 2)
mi->bmi[ib + 1].as_mode = b_mode;
}
}
mbmi->mode = mi->bmi[3].as_mode;
switch (bsize) {
case BLOCK_4X4:
for (i = 0; i < 4; ++i)
mi->bmi[i].as_mode = read_intra_mode_y(cm, r, 0);
mbmi->mode = mi->bmi[3].as_mode;
break;
case BLOCK_4X8:
mi->bmi[0].as_mode = mi->bmi[2].as_mode = read_intra_mode_y(cm, r, 0);
mi->bmi[1].as_mode = mi->bmi[3].as_mode = mbmi->mode =
read_intra_mode_y(cm, r, 0);
break;
case BLOCK_8X4:
mi->bmi[0].as_mode = mi->bmi[1].as_mode = read_intra_mode_y(cm, r, 0);
mi->bmi[2].as_mode = mi->bmi[3].as_mode = mbmi->mode =
read_intra_mode_y(cm, r, 0);
break;
default:
mbmi->mode = read_intra_mode_y(cm, r, size_group_lookup[bsize]);
}
mbmi->uv_mode = read_intra_mode_uv(cm, r, mbmi->mode);