Commit f153a5d0 authored by Jingning Han's avatar Jingning Han
Browse files

Make the intra rd search support 8x4/4x8

This commit allows the rate-distortion optimization of intra coding
capable of supporting 8x4 and 4x8 partition settings.

It enables the entropy coding of intra modes in key frame using a
unified contextual probability model conditioned on its above/left
prediction modes.

Coding performance:
derf 0.464%

Change-Id: Ieed055084e11fcb64d5d5faeb0e706d30268ba18
parent 1f7d810a
......@@ -107,10 +107,10 @@ const vp9_prob vp9_partition_probs[NUM_PARTITION_CONTEXTS]
[PARTITION_TYPES - 1] = {
// FIXME(jingning,rbultje) put real probabilities here
#if CONFIG_AB4X4
{105, 88, 252},
{113, 88, 249},
{113, 106, 251},
{126, 105, 107},
{202, 162, 107},
{16, 2, 169},
{3, 246, 19},
{104, 90, 134},
#endif
{202, 162, 107},
{16, 2, 169},
......
......@@ -153,7 +153,7 @@ static B_PREDICTION_MODE left_block_mode(const MODE_INFO *cur_mb, int b) {
} else if (cur_mb->mbmi.mode == I4X4_PRED) {
return ((cur_mb->bmi + 1 + b)->as_mode.first);
} else {
return B_DC_PRED;
return DC_PRED;
}
}
assert(b == 1 || b == 3);
......@@ -171,7 +171,7 @@ static B_PREDICTION_MODE above_block_mode(const MODE_INFO *cur_mb,
} else if (cur_mb->mbmi.mode == I4X4_PRED) {
return ((cur_mb->bmi + 2 + b)->as_mode.first);
} else {
return B_DC_PRED;
return DC_PRED;
}
}
......
......@@ -103,6 +103,7 @@ static void kfread_modes(VP9D_COMP *pbi, MODE_INFO *m,
vp9_reader *r) {
VP9_COMMON *const cm = &pbi->common;
MACROBLOCKD *const xd = &pbi->mb;
const int mis = cm->mode_info_stride;
m->mbmi.ref_frame = INTRA_FRAME;
// Read segmentation map if it is being updated explicitly this frame
......@@ -119,11 +120,14 @@ static void kfread_modes(VP9D_COMP *pbi, MODE_INFO *m,
// luma mode
#if CONFIG_AB4X4
if (m->mbmi.sb_type >= BLOCK_SIZE_SB8X8)
m->mbmi.mode = read_kf_sb_ymode(r,
cm->sb_kf_ymode_prob[cm->kf_ymode_probs_index]);
else
if (m->mbmi.sb_type >= BLOCK_SIZE_SB8X8) {
const MB_PREDICTION_MODE A = above_block_mode(m, 0, mis);
const MB_PREDICTION_MODE L = xd->left_available ?
left_block_mode(m, 0) : DC_PRED;
m->mbmi.mode = read_kf_bmode(r, cm->kf_bmode_prob[A][L]);
} else {
m->mbmi.mode = I4X4_PRED;
}
#else
m->mbmi.mode = m->mbmi.sb_type > BLOCK_SIZE_SB8X8 ?
read_kf_sb_ymode(r, cm->sb_kf_ymode_prob[cm->kf_ymode_probs_index]):
......@@ -140,15 +144,25 @@ static void kfread_modes(VP9D_COMP *pbi, MODE_INFO *m,
int idx, idy;
int bw = 1 << b_width_log2(m->mbmi.sb_type);
int bh = 1 << b_height_log2(m->mbmi.sb_type);
// FIXME(jingning): fix intra4x4 rate-distortion optimization, then
// use bw and bh as the increment values.
#if !CONFIG_AB4X4 || CONFIG_AB4X4
#if !CONFIG_AB4X4
bw = 1, bh = 1;
#endif
for (idy = 0; idy < 2; idy += bh)
for (idx = 0; idx < 2; idx += bw)
m->bmi[idy * 2 + idx].as_mode.first =
read_kf_sb_ymode(r, cm->sb_kf_ymode_prob[cm->kf_ymode_probs_index]);
for (idy = 0; idy < 2; idy += bh) {
for (idx = 0; idx < 2; idx += bw) {
int ib = idy * 2 + idx;
int k;
const MB_PREDICTION_MODE A = above_block_mode(m, ib, mis);
const MB_PREDICTION_MODE L = (xd->left_available || idx) ?
left_block_mode(m, ib) : DC_PRED;
m->bmi[ib].as_mode.first =
read_kf_bmode(r, cm->kf_bmode_prob[A][L]);
for (k = 1; k < bh; ++k)
m->bmi[ib + k * 2].as_mode.first = m->bmi[ib].as_mode.first;
for (k = 1; k < bw; ++k)
m->bmi[ib + k].as_mode.first = m->bmi[ib].as_mode.first;
}
}
}
m->mbmi.uv_mode = read_uv_mode(r, cm->kf_uv_mode_prob[m->mbmi.mode]);
......@@ -858,16 +872,19 @@ static void read_mb_modes_mv(VP9D_COMP *pbi, MODE_INFO *mi, MB_MODE_INFO *mbmi,
if (mbmi->mode == I4X4_PRED) {
#endif
int idx, idy;
// FIXME(jingning): fix intra4x4 rate-distortion optimization, then
// use bw and bh as the increment values.
#if !CONFIG_AB4X4 || CONFIG_AB4X4
#if !CONFIG_AB4X4
bw = 1, bh = 1;
#endif
for (idy = 0; idy < 2; idy += bh) {
for (idx = 0; idx < 2; idx += bw) {
int ib = idy * 2 + idx, k;
int m = read_sb_ymode(r, cm->fc.sb_ymode_prob);
mi->bmi[idy * 2 + idx].as_mode.first = m;
mi->bmi[ib].as_mode.first = m;
cm->fc.sb_ymode_counts[m]++;
for (k = 1; k < bh; ++k)
mi->bmi[ib + k * 2].as_mode.first = m;
for (k = 1; k < bw; ++k)
mi->bmi[ib + k].as_mode.first = m;
}
}
}
......
......@@ -740,9 +740,7 @@ static void pack_inter_mode_mvs(VP9_COMP *cpi, MODE_INFO *m,
int idx, idy;
int bw = 1 << b_width_log2(mi->sb_type);
int bh = 1 << b_height_log2(mi->sb_type);
// FIXME(jingning): fix intra4x4 rate-distortion optimization, then
// use bw and bh as the increment values.
#if !CONFIG_AB4X4 || CONFIG_AB4X4
#if !CONFIG_AB4X4
bw = 1, bh = 1;
#endif
for (idy = 0; idy < 2; idy += bh)
......@@ -892,6 +890,7 @@ static void write_mb_modes_kf(const VP9_COMP *cpi,
const VP9_COMMON *const c = &cpi->common;
const MACROBLOCKD *const xd = &cpi->mb.e_mbd;
const int ym = m->mbmi.mode;
const int mis = c->mode_info_stride;
const int segment_id = m->mbmi.segment_id;
int skip_coeff;
......@@ -906,8 +905,12 @@ static void write_mb_modes_kf(const VP9_COMP *cpi,
}
#if CONFIG_AB4X4
if (m->mbmi.sb_type >= BLOCK_SIZE_SB8X8)
sb_kfwrite_ymode(bc, ym, c->sb_kf_ymode_prob[c->kf_ymode_probs_index]);
if (m->mbmi.sb_type >= BLOCK_SIZE_SB8X8) {
const B_PREDICTION_MODE A = above_block_mode(m, 0, mis);
const B_PREDICTION_MODE L = xd->left_available ?
left_block_mode(m, 0) : DC_PRED;
write_kf_bmode(bc, ym, c->kf_bmode_prob[A][L]);
}
#else
if (m->mbmi.sb_type > BLOCK_SIZE_SB8X8)
sb_kfwrite_ymode(bc, ym, c->sb_kf_ymode_prob[c->kf_ymode_probs_index]);
......@@ -923,15 +926,19 @@ static void write_mb_modes_kf(const VP9_COMP *cpi,
int idx, idy;
int bw = 1 << b_width_log2(m->mbmi.sb_type);
int bh = 1 << b_height_log2(m->mbmi.sb_type);
// FIXME(jingning): fix intra4x4 rate-distortion optimization, then
// use bw and bh as the increment values.
#if !CONFIG_AB4X4 || CONFIG_AB4X4
#if !CONFIG_AB4X4
bw = 1, bh = 1;
#endif
for (idy = 0; idy < 2; idy += bh)
for (idx = 0; idx < 2; idx += bw)
sb_kfwrite_ymode(bc, m->bmi[idy * 2 + idx].as_mode.first,
c->sb_kf_ymode_prob[c->kf_ymode_probs_index]);
for (idy = 0; idy < 2; idy += bh) {
for (idx = 0; idx < 2; idx += bw) {
int i = idy * 2 + idx;
const B_PREDICTION_MODE A = above_block_mode(m, i, mis);
const B_PREDICTION_MODE L = (xd->left_available || idx) ?
left_block_mode(m, i) : DC_PRED;
write_kf_bmode(bc, m->bmi[i].as_mode.first,
c->kf_bmode_prob[A][L]);
}
}
}
write_uv_mode(bc, m->mbmi.uv_mode, c->kf_uv_mode_prob[ym]);
......
......@@ -1617,9 +1617,7 @@ static void sum_intra_stats(VP9_COMP *cpi, MACROBLOCK *x) {
int idx, idy;
int bw = 1 << b_width_log2(xd->mode_info_context->mbmi.sb_type);
int bh = 1 << b_height_log2(xd->mode_info_context->mbmi.sb_type);
// FIXME(jingning): fix intra4x4 rate-distortion optimization, then
// use bw and bh as the increment values.
#if !CONFIG_AB4X4 || CONFIG_AB4X4
#if !CONFIG_AB4X4
bw = 1, bh = 1;
#endif
for (idy = 0; idy < 2; idy += bh) {
......
......@@ -33,10 +33,18 @@ void vp9_init_mode_costs(VP9_COMP *c) {
x->fc.sub_mv_ref_prob[0], vp9_sub_mv_ref_tree);
// TODO(rbultje) separate tables for superblock costing?
#if CONFIG_AB4X4
vp9_cost_tokens(c->mb.mbmode_cost[1], x->fc.sb_ymode_prob,
vp9_sb_ymode_tree);
vp9_cost_tokens(c->mb.mbmode_cost[0],
x->sb_kf_ymode_prob[c->common.kf_ymode_probs_index],
vp9_sb_ymode_tree);
#else
vp9_cost_tokens(c->mb.mbmode_cost[1], x->fc.ymode_prob, vp9_ymode_tree);
vp9_cost_tokens(c->mb.mbmode_cost[0],
x->kf_ymode_prob[c->common.kf_ymode_probs_index],
vp9_kf_ymode_tree);
#endif
vp9_cost_tokens(c->mb.intra_uv_mode_cost[1],
x->fc.uv_mode_prob[VP9_YMODES - 1], vp9_uv_mode_tree);
vp9_cost_tokens(c->mb.intra_uv_mode_cost[0],
......
......@@ -580,78 +580,104 @@ static int64_t rd_pick_intra4x4block(VP9_COMP *cpi, MACROBLOCK *x, int ib,
int *bmode_costs,
ENTROPY_CONTEXT *a, ENTROPY_CONTEXT *l,
int *bestrate, int *bestratey,
int *bestdistortion) {
int *bestdistortion,
BLOCK_SIZE_TYPE bsize) {
#if CONFIG_AB4X4
MB_PREDICTION_MODE mode;
#else
B_PREDICTION_MODE mode;
#endif
MACROBLOCKD *xd = &x->e_mbd;
int64_t best_rd = INT64_MAX;
int rate = 0;
int distortion;
VP9_COMMON *const cm = &cpi->common;
const int src_stride = x->plane[0].src.stride;
uint8_t* const src =
raster_block_offset_uint8(xd,
BLOCK_SIZE_SB8X8,
0, ib,
x->plane[0].src.buf, src_stride);
int16_t* const src_diff =
raster_block_offset_int16(xd,
BLOCK_SIZE_SB8X8,
0, ib,
x->plane[0].src_diff);
int16_t* const coeff = BLOCK_OFFSET(x->plane[0].coeff, ib, 16);
uint8_t* const dst =
raster_block_offset_uint8(xd,
BLOCK_SIZE_SB8X8,
0, ib,
xd->plane[0].dst.buf, xd->plane[0].dst.stride);
ENTROPY_CONTEXT ta = *a, tempa = *a;
ENTROPY_CONTEXT tl = *l, templ = *l;
uint8_t *src, *dst;
int16_t *src_diff, *coeff;
ENTROPY_CONTEXT ta[2], tempa[2];
ENTROPY_CONTEXT tl[2], templ[2];
TX_TYPE tx_type = DCT_DCT;
TX_TYPE best_tx_type = DCT_DCT;
/*
* The predictor buffer is a 2d buffer with a stride of 16. Create
* a temp buffer that meets the stride requirements, but we are only
* interested in the left 4x4 block
* */
DECLARE_ALIGNED_ARRAY(16, int16_t, best_dqcoeff, 16);
int bw = 1 << b_width_log2(bsize);
int bh = 1 << b_height_log2(bsize);
int idx, idy, block;
DECLARE_ALIGNED(16, int16_t, best_dqcoeff[4][16]);
assert(ib < 4);
#if !CONFIG_AB4X4
bw = 1, bh = 1;
#endif
vpx_memcpy(ta, a, sizeof(ta));
vpx_memcpy(tl, l, sizeof(tl));
xd->mode_info_context->mbmi.txfm_size = TX_4X4;
#if CONFIG_AB4X4
for (mode = DC_PRED; mode <= TM_PRED; ++mode) {
#else
for (mode = B_DC_PRED; mode < LEFT4X4; mode++) {
#endif
int64_t this_rd;
int ratey;
int ratey = 0;
xd->mode_info_context->bmi[ib].as_mode.first = mode;
rate = bmode_costs[mode];
if (cm->frame_type == KEY_FRAME)
rate = bmode_costs[mode];
else
rate = x->mbmode_cost[cm->frame_type][mode];
distortion = 0;
vp9_intra4x4_predict(xd, ib,
BLOCK_SIZE_SB8X8,
mode, dst, xd->plane[0].dst.stride);
vp9_subtract_block(4, 4, src_diff, 8,
src, src_stride,
dst, xd->plane[0].dst.stride);
vpx_memcpy(tempa, ta, sizeof(ta));
vpx_memcpy(templ, tl, sizeof(tl));
xd->mode_info_context->bmi[ib].as_mode.first = mode;
tx_type = get_tx_type_4x4(xd, ib);
if (tx_type != DCT_DCT) {
vp9_short_fht4x4(src_diff, coeff, 8, tx_type);
x->quantize_b_4x4(x, ib, tx_type, 16);
} else {
x->fwd_txm4x4(src_diff, coeff, 16);
x->quantize_b_4x4(x, ib, tx_type, 16);
}
for (idy = 0; idy < bh; ++idy) {
for (idx = 0; idx < bw; ++idx) {
block = ib + idy * 2 + idx;
xd->mode_info_context->bmi[block].as_mode.first = mode;
src = raster_block_offset_uint8(xd, BLOCK_SIZE_SB8X8, 0, block,
x->plane[0].src.buf, src_stride);
src_diff = raster_block_offset_int16(xd, BLOCK_SIZE_SB8X8, 0, block,
x->plane[0].src_diff);
coeff = BLOCK_OFFSET(x->plane[0].coeff, block, 16);
dst = raster_block_offset_uint8(xd, BLOCK_SIZE_SB8X8, 0, block,
xd->plane[0].dst.buf,
xd->plane[0].dst.stride);
vp9_intra4x4_predict(xd, block,
BLOCK_SIZE_SB8X8,
mode, dst, xd->plane[0].dst.stride);
vp9_subtract_block(4, 4, src_diff, 8,
src, src_stride,
dst, xd->plane[0].dst.stride);
tx_type = get_tx_type_4x4(xd, block);
if (tx_type != DCT_DCT) {
vp9_short_fht4x4(src_diff, coeff, 8, tx_type);
x->quantize_b_4x4(x, block, tx_type, 16);
} else {
x->fwd_txm4x4(src_diff, coeff, 16);
x->quantize_b_4x4(x, block, tx_type, 16);
}
tempa = ta;
templ = tl;
ratey += cost_coeffs(cm, x, 0, block, PLANE_TYPE_Y_WITH_DC,
tempa + idx, templ + idy, TX_4X4, 16);
distortion += vp9_block_error(coeff, BLOCK_OFFSET(xd->plane[0].dqcoeff,
block, 16), 16) >> 2;
ratey = cost_coeffs(cm, x, 0, ib,
PLANE_TYPE_Y_WITH_DC, &tempa, &templ, TX_4X4, 16);
rate += ratey;
distortion = vp9_block_error(coeff,
BLOCK_OFFSET(xd->plane[0].dqcoeff, ib, 16),
16) >> 2;
vp9_intra4x4_predict(xd, block, BLOCK_SIZE_SB8X8, *best_mode,
dst, xd->plane[0].dst.stride);
if (best_tx_type != DCT_DCT)
vp9_short_iht4x4_add(BLOCK_OFFSET(xd->plane[0].dqcoeff, block, 16),
dst, xd->plane[0].dst.stride, best_tx_type);
else
xd->inv_txm4x4_add(BLOCK_OFFSET(xd->plane[0].dqcoeff, block, 16),
dst, xd->plane[0].dst.stride);
}
}
rate += ratey;
this_rd = RDCOST(x->rdmult, x->rddiv, rate, distortion);
if (this_rd < best_rd) {
......@@ -661,25 +687,37 @@ static int64_t rd_pick_intra4x4block(VP9_COMP *cpi, MACROBLOCK *x, int ib,
best_rd = this_rd;
*best_mode = mode;
best_tx_type = tx_type;
*a = tempa;
*l = templ;
vpx_memcpy(best_dqcoeff, BLOCK_OFFSET(xd->plane[0].dqcoeff, ib, 16), 32);
vpx_memcpy(a, tempa, sizeof(tempa));
vpx_memcpy(l, templ, sizeof(templ));
for (idy = 0; idy < bh; ++idy) {
for (idx = 0; idx < bw; ++idx) {
block = ib + idy * 2 + idx;
vpx_memcpy(best_dqcoeff[idy * 2 + idx],
BLOCK_OFFSET(xd->plane[0].dqcoeff, block, 16),
sizeof(best_dqcoeff[0]));
}
}
}
}
xd->mode_info_context->bmi[ib].as_mode.first =
(B_PREDICTION_MODE)(*best_mode);
vp9_intra4x4_predict(xd, ib,
BLOCK_SIZE_SB8X8,
*best_mode,
dst, xd->plane[0].dst.stride);
// inverse transform
if (best_tx_type != DCT_DCT) {
vp9_short_iht4x4_add(best_dqcoeff, dst, xd->plane[0].dst.stride,
best_tx_type);
} else {
xd->inv_txm4x4_add(best_dqcoeff, dst, xd->plane[0].dst.stride);
for (idy = 0; idy < bh; ++idy) {
for (idx = 0; idx < bw; ++idx) {
block = ib + idy * 2 + idx;
xd->mode_info_context->bmi[block].as_mode.first = *best_mode;
dst = raster_block_offset_uint8(xd, BLOCK_SIZE_SB8X8, 0, block,
xd->plane[0].dst.buf,
xd->plane[0].dst.stride);
vp9_intra4x4_predict(xd, block, BLOCK_SIZE_SB8X8, *best_mode,
dst, xd->plane[0].dst.stride);
// inverse transform
if (best_tx_type != DCT_DCT)
vp9_short_iht4x4_add(best_dqcoeff[idy * 2 + idx], dst,
xd->plane[0].dst.stride, best_tx_type);
else
xd->inv_txm4x4_add(best_dqcoeff[idy * 2 + idx], dst,
xd->plane[0].dst.stride);
}
}
return best_rd;
......@@ -688,8 +726,12 @@ static int64_t rd_pick_intra4x4block(VP9_COMP *cpi, MACROBLOCK *x, int ib,
static int64_t rd_pick_intra4x4mby_modes(VP9_COMP *cpi, MACROBLOCK *mb,
int *Rate, int *rate_y,
int *Distortion, int64_t best_rd) {
int i;
int i, j;
MACROBLOCKD *const xd = &mb->e_mbd;
BLOCK_SIZE_TYPE bsize = xd->mode_info_context->mbmi.sb_type;
int bw = 1 << b_width_log2(bsize);
int bh = 1 << b_height_log2(bsize);
int idx, idy;
#if CONFIG_AB4X4
int cost = 0;
#else
......@@ -698,7 +740,7 @@ static int64_t rd_pick_intra4x4mby_modes(VP9_COMP *cpi, MACROBLOCK *mb,
int distortion = 0;
int tot_rate_y = 0;
int64_t total_rd = 0;
ENTROPY_CONTEXT t_above[2], t_left[2];
ENTROPY_CONTEXT t_above[4], t_left[4];
int *bmode_costs;
vpx_memcpy(t_above, xd->plane[0].above_context, sizeof(t_above));
......@@ -707,31 +749,43 @@ static int64_t rd_pick_intra4x4mby_modes(VP9_COMP *cpi, MACROBLOCK *mb,
xd->mode_info_context->mbmi.mode = I4X4_PRED;
bmode_costs = mb->inter_bmode_costs;
for (i = 0; i < 4; i++) {
const int x_idx = i & 1, y_idx = i >> 1;
MODE_INFO *const mic = xd->mode_info_context;
const int mis = xd->mode_info_stride;
B_PREDICTION_MODE UNINITIALIZED_IS_SAFE(best_mode);
int UNINITIALIZED_IS_SAFE(r), UNINITIALIZED_IS_SAFE(ry), UNINITIALIZED_IS_SAFE(d);
#if !CONFIG_AB4X4
bw = 1, bh = 1;
#endif
if (xd->frame_type == KEY_FRAME) {
const B_PREDICTION_MODE A = above_block_mode(mic, i, mis);
const B_PREDICTION_MODE L = left_block_mode(mic, i);
for (idy = 0; idy < 2; idy += bh) {
for (idx = 0; idx < 2; idx += bw) {
MODE_INFO *const mic = xd->mode_info_context;
const int mis = xd->mode_info_stride;
B_PREDICTION_MODE UNINITIALIZED_IS_SAFE(best_mode);
int UNINITIALIZED_IS_SAFE(r), UNINITIALIZED_IS_SAFE(ry);
int UNINITIALIZED_IS_SAFE(d);
i = idy * 2 + idx;
bmode_costs = mb->bmode_costs[A][L];
}
if (xd->frame_type == KEY_FRAME) {
const MB_PREDICTION_MODE A = above_block_mode(mic, i, mis);
const MB_PREDICTION_MODE L = (xd->left_available || idx) ?
left_block_mode(mic, i) : DC_PRED;
total_rd += rd_pick_intra4x4block(cpi, mb, i, &best_mode, bmode_costs,
t_above + x_idx, t_left + y_idx,
&r, &ry, &d);
cost += r;
distortion += d;
tot_rate_y += ry;
bmode_costs = mb->bmode_costs[A][L];
}
mic->bmi[i].as_mode.first = best_mode;
total_rd += rd_pick_intra4x4block(cpi, mb, i, &best_mode, bmode_costs,
t_above + idx, t_left + idy,
&r, &ry, &d, bsize);
cost += r;
distortion += d;
tot_rate_y += ry;
if (total_rd >= best_rd)
break;
mic->bmi[i].as_mode.first = best_mode;
for (j = 1; j < bh; ++j)
mic->bmi[i + j * 2].as_mode.first = best_mode;
for (j = 1; j < bw; ++j)
mic->bmi[i + j].as_mode.first = best_mode;
if (total_rd >= best_rd)
break;
}
}
if (total_rd >= best_rd)
......@@ -751,6 +805,7 @@ static int64_t rd_pick_intra_sby_mode(VP9_COMP *cpi, MACROBLOCK *x,
int64_t txfm_cache[NB_TXFM_MODES]) {
MB_PREDICTION_MODE mode;
MB_PREDICTION_MODE UNINITIALIZED_IS_SAFE(mode_selected);
MACROBLOCKD *xd = &x->e_mbd;
int this_rate, this_rate_tokenonly;
int this_distortion, s;
int64_t best_rd = INT64_MAX, this_rd;
......@@ -770,13 +825,20 @@ static int64_t rd_pick_intra_sby_mode(VP9_COMP *cpi, MACROBLOCK *x,
/* Y Search for 32x32 intra prediction mode */
for (mode = DC_PRED; mode <= TM_PRED; mode++) {
int64_t local_txfm_cache[NB_TXFM_MODES];
MODE_INFO *const mic = xd->mode_info_context;
const int mis = xd->mode_info_stride;
const MB_PREDICTION_MODE A = above_block_mode(mic, 0, mis);
const MB_PREDICTION_MODE L = xd->left_available ?
left_block_mode(mic, 0) : DC_PRED;
int *bmode_costs = x->bmode_costs[A][L];
x->e_mbd.mode_info_context->mbmi.mode = mode;
vp9_build_intra_predictors_sby_s(&x->e_mbd, bsize);
super_block_yrd(cpi, x, &this_rate_tokenonly, &this_distortion, &s,
bsize, local_txfm_cache);
this_rate = this_rate_tokenonly + x->mbmode_cost[x->e_mbd.frame_type][mode];
this_rate = this_rate_tokenonly + bmode_costs[mode];
this_rd = RDCOST(x->rdmult, x->rddiv, this_rate, this_distortion);
if (this_rd < best_rd) {
......
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