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vpx/vp9/common/vp9_entropymode.c
Dmitry Kovalev c4ad3273c7 Moving segmentation related vars into separate struct. 
Adding segmentation struct to vp9_seg_common.h. Struct members are from
macroblockd and VP9Common structs. Moving segmentation related constants
and enums to vp9_seg_common.h.

Change-Id: I23fabc33f11a359249f5f80d161daf569d02ec03
2013-07-11 11:57:57 -07:00

510 lines
19 KiB
C
Raw Blame History

/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "vp9/common/vp9_onyxc_int.h"
#include "vp9/common/vp9_seg_common.h"
#include "vp9/common/vp9_alloccommon.h"
#include "vpx_mem/vpx_mem.h"
static const vp9_prob default_kf_uv_probs[VP9_INTRA_MODES]
[VP9_INTRA_MODES - 1] = {
{ 144, 11, 54, 157, 195, 130, 46, 58, 108 } /* y = dc */,
{ 118, 15, 123, 148, 131, 101, 44, 93, 131 } /* y = v */,
{ 113, 12, 23, 188, 226, 142, 26, 32, 125 } /* y = h */,
{ 120, 11, 50, 123, 163, 135, 64, 77, 103 } /* y = d45 */,
{ 113, 9, 36, 155, 111, 157, 32, 44, 161 } /* y = d135 */,
{ 116, 9, 55, 176, 76, 96, 37, 61, 149 } /* y = d117 */,
{ 115, 9, 28, 141, 161, 167, 21, 25, 193 } /* y = d153 */,
{ 120, 12, 32, 145, 195, 142, 32, 38, 86 } /* y = d27 */,
{ 116, 12, 64, 120, 140, 125, 49, 115, 121 } /* y = d63 */,
{ 102, 19, 66, 162, 182, 122, 35, 59, 128 } /* y = tm */
};
static const vp9_prob default_if_y_probs[BLOCK_SIZE_GROUPS]
[VP9_INTRA_MODES - 1] = {
{ 65, 32, 18, 144, 162, 194, 41, 51, 98 } /* block_size < 8x8 */,
{ 132, 68, 18, 165, 217, 196, 45, 40, 78 } /* block_size < 16x16 */,
{ 173, 80, 19, 176, 240, 193, 64, 35, 46 } /* block_size < 32x32 */,
{ 221, 135, 38, 194, 248, 121, 96, 85, 29 } /* block_size >= 32x32 */
};
static const vp9_prob default_if_uv_probs[VP9_INTRA_MODES]
[VP9_INTRA_MODES - 1] = {
{ 120, 7, 76, 176, 208, 126, 28, 54, 103 } /* y = dc */,
{ 48, 12, 154, 155, 139, 90, 34, 117, 119 } /* y = v */,
{ 67, 6, 25, 204, 243, 158, 13, 21, 96 } /* y = h */,
{ 97, 5, 44, 131, 176, 139, 48, 68, 97 } /* y = d45 */,
{ 83, 5, 42, 156, 111, 152, 26, 49, 152 } /* y = d135 */,
{ 80, 5, 58, 178, 74, 83, 33, 62, 145 } /* y = d117 */,
{ 86, 5, 32, 154, 192, 168, 14, 22, 163 } /* y = d153 */,
{ 85, 5, 32, 156, 216, 148, 19, 29, 73 } /* y = d27 */,
{ 77, 7, 64, 116, 132, 122, 37, 126, 120 } /* y = d63 */,
{ 101, 21, 107, 181, 192, 103, 19, 67, 125 } /* y = tm */
};
const vp9_prob vp9_partition_probs[NUM_FRAME_TYPES][NUM_PARTITION_CONTEXTS]
[PARTITION_TYPES - 1] = {
{ /* frame_type = keyframe */
/* 8x8 -> 4x4 */
{ 158, 97, 94 } /* a/l both not split */,
{ 93, 24, 99 } /* a split, l not split */,
{ 85, 119, 44 } /* l split, a not split */,
{ 62, 59, 67 } /* a/l both split */,
/* 16x16 -> 8x8 */
{ 149, 53, 53 } /* a/l both not split */,
{ 94, 20, 48 } /* a split, l not split */,
{ 83, 53, 24 } /* l split, a not split */,
{ 52, 18, 18 } /* a/l both split */,
/* 32x32 -> 16x16 */
{ 150, 40, 39 } /* a/l both not split */,
{ 78, 12, 26 } /* a split, l not split */,
{ 67, 33, 11 } /* l split, a not split */,
{ 24, 7, 5 } /* a/l both split */,
/* 64x64 -> 32x32 */
{ 174, 35, 49 } /* a/l both not split */,
{ 68, 11, 27 } /* a split, l not split */,
{ 57, 15, 9 } /* l split, a not split */,
{ 12, 3, 3 } /* a/l both split */
}, { /* frame_type = interframe */
/* 8x8 -> 4x4 */
{ 199, 122, 141 } /* a/l both not split */,
{ 147, 63, 159 } /* a split, l not split */,
{ 148, 133, 118 } /* l split, a not split */,
{ 121, 104, 114 } /* a/l both split */,
/* 16x16 -> 8x8 */
{ 174, 73, 87 } /* a/l both not split */,
{ 92, 41, 83 } /* a split, l not split */,
{ 82, 99, 50 } /* l split, a not split */,
{ 53, 39, 39 } /* a/l both split */,
/* 32x32 -> 16x16 */
{ 177, 58, 59 } /* a/l both not split */,
{ 68, 26, 63 } /* a split, l not split */,
{ 52, 79, 25 } /* l split, a not split */,
{ 17, 14, 12 } /* a/l both split */,
/* 64x64 -> 32x32 */
{ 222, 34, 30 } /* a/l both not split */,
{ 72, 16, 44 } /* a split, l not split */,
{ 58, 32, 12 } /* l split, a not split */,
{ 10, 7, 6 } /* a/l both split */
}
};
static const vp9_prob default_inter_mode_probs[INTER_MODE_CONTEXTS]
[VP9_INTER_MODES - 1] = {
{2, 173, 34}, // 0 = both zero mv
{7, 145, 85}, // 1 = one zero mv + one a predicted mv
{7, 166, 63}, // 2 = two predicted mvs
{7, 94, 66}, // 3 = one predicted/zero and one new mv
{8, 64, 46}, // 4 = two new mvs
{17, 81, 31}, // 5 = one intra neighbour + x
{25, 29, 30}, // 6 = two intra neighbours
};
/* Array indices are identical to previously-existing INTRAMODECONTEXTNODES. */
const vp9_tree_index vp9_intra_mode_tree[VP9_INTRA_MODES * 2 - 2] = {
-DC_PRED, 2, /* 0 = DC_NODE */
-TM_PRED, 4, /* 1 = TM_NODE */
-V_PRED, 6, /* 2 = V_NODE */
8, 12, /* 3 = COM_NODE */
-H_PRED, 10, /* 4 = H_NODE */
-D135_PRED, -D117_PRED, /* 5 = D135_NODE */
-D45_PRED, 14, /* 6 = D45_NODE */
-D63_PRED, 16, /* 7 = D63_NODE */
-D153_PRED, -D27_PRED /* 8 = D153_NODE */
};
const vp9_tree_index vp9_sb_mv_ref_tree[6] = {
-ZEROMV, 2,
-NEARESTMV, 4,
-NEARMV, -NEWMV
};
const vp9_tree_index vp9_partition_tree[6] = {
-PARTITION_NONE, 2,
-PARTITION_HORZ, 4,
-PARTITION_VERT, -PARTITION_SPLIT
};
struct vp9_token vp9_intra_mode_encodings[VP9_INTRA_MODES];
struct vp9_token vp9_sb_mv_ref_encoding_array[VP9_INTER_MODES];
struct vp9_token vp9_partition_encodings[PARTITION_TYPES];
static const vp9_prob default_intra_inter_p[INTRA_INTER_CONTEXTS] = {
9, 102, 187, 225
};
static const vp9_prob default_comp_inter_p[COMP_INTER_CONTEXTS] = {
239, 183, 119, 96, 41
};
static const vp9_prob default_comp_ref_p[REF_CONTEXTS] = {
50, 126, 123, 221, 226
};
static const vp9_prob default_single_ref_p[REF_CONTEXTS][2] = {
{ 33, 16 },
{ 77, 74 },
{ 142, 142 },
{ 172, 170 },
{ 238, 247 }
};
const vp9_prob vp9_default_tx_probs_32x32p[TX_SIZE_CONTEXTS]
[TX_SIZE_MAX_SB - 1] = {
{ 3, 136, 37, },
{ 5, 52, 13, },
};
const vp9_prob vp9_default_tx_probs_16x16p[TX_SIZE_CONTEXTS]
[TX_SIZE_MAX_SB - 2] = {
{ 20, 152, },
{ 15, 101, },
};
const vp9_prob vp9_default_tx_probs_8x8p[TX_SIZE_CONTEXTS]
[TX_SIZE_MAX_SB - 3] = {
{ 100, },
{ 66, },
};
void tx_counts_to_branch_counts_32x32(unsigned int *tx_count_32x32p,
unsigned int (*ct_32x32p)[2]) {
ct_32x32p[0][0] = tx_count_32x32p[TX_4X4];
ct_32x32p[0][1] = tx_count_32x32p[TX_8X8] +
tx_count_32x32p[TX_16X16] +
tx_count_32x32p[TX_32X32];
ct_32x32p[1][0] = tx_count_32x32p[TX_8X8];
ct_32x32p[1][1] = tx_count_32x32p[TX_16X16] +
tx_count_32x32p[TX_32X32];
ct_32x32p[2][0] = tx_count_32x32p[TX_16X16];
ct_32x32p[2][1] = tx_count_32x32p[TX_32X32];
}
void tx_counts_to_branch_counts_16x16(unsigned int *tx_count_16x16p,
unsigned int (*ct_16x16p)[2]) {
ct_16x16p[0][0] = tx_count_16x16p[TX_4X4];
ct_16x16p[0][1] = tx_count_16x16p[TX_8X8] + tx_count_16x16p[TX_16X16];
ct_16x16p[1][0] = tx_count_16x16p[TX_8X8];
ct_16x16p[1][1] = tx_count_16x16p[TX_16X16];
}
void tx_counts_to_branch_counts_8x8(unsigned int *tx_count_8x8p,
unsigned int (*ct_8x8p)[2]) {
ct_8x8p[0][0] = tx_count_8x8p[TX_4X4];
ct_8x8p[0][1] = tx_count_8x8p[TX_8X8];
}
const vp9_prob vp9_default_mbskip_probs[MBSKIP_CONTEXTS] = {
192, 128, 64
};
void vp9_init_mbmode_probs(VP9_COMMON *cm) {
vp9_copy(cm->fc.uv_mode_prob, default_if_uv_probs);
vp9_copy(cm->kf_uv_mode_prob, default_kf_uv_probs);
vp9_copy(cm->fc.y_mode_prob, default_if_y_probs);
vp9_copy(cm->fc.switchable_interp_prob, vp9_switchable_interp_prob);
vp9_copy(cm->fc.partition_prob, vp9_partition_probs);
vp9_copy(cm->fc.intra_inter_prob, default_intra_inter_p);
vp9_copy(cm->fc.comp_inter_prob, default_comp_inter_p);
vp9_copy(cm->fc.comp_ref_prob, default_comp_ref_p);
vp9_copy(cm->fc.single_ref_prob, default_single_ref_p);
vp9_copy(cm->fc.tx_probs_32x32p, vp9_default_tx_probs_32x32p);
vp9_copy(cm->fc.tx_probs_16x16p, vp9_default_tx_probs_16x16p);
vp9_copy(cm->fc.tx_probs_8x8p, vp9_default_tx_probs_8x8p);
vp9_copy(cm->fc.mbskip_probs, vp9_default_mbskip_probs);
}
const vp9_tree_index vp9_switchable_interp_tree[VP9_SWITCHABLE_FILTERS*2-2] = {
-0, 2,
-1, -2
};
struct vp9_token vp9_switchable_interp_encodings[VP9_SWITCHABLE_FILTERS];
const INTERPOLATIONFILTERTYPE vp9_switchable_interp[VP9_SWITCHABLE_FILTERS] = {
EIGHTTAP, EIGHTTAP_SMOOTH, EIGHTTAP_SHARP};
const int vp9_switchable_interp_map[SWITCHABLE+1] = {1, 0, 2, -1, -1};
const vp9_prob vp9_switchable_interp_prob [VP9_SWITCHABLE_FILTERS+1]
[VP9_SWITCHABLE_FILTERS-1] = {
{ 235, 162, },
{ 36, 255, },
{ 34, 3, },
{ 149, 144, },
};
// Indicates if the filter is interpolating or non-interpolating
const int vp9_is_interpolating_filter[SWITCHABLE + 1] = {1, 1, 1, 1, -1};
void vp9_entropy_mode_init() {
vp9_tokens_from_tree(vp9_intra_mode_encodings, vp9_intra_mode_tree);
vp9_tokens_from_tree(vp9_switchable_interp_encodings,
vp9_switchable_interp_tree);
vp9_tokens_from_tree(vp9_partition_encodings, vp9_partition_tree);
vp9_tokens_from_tree_offset(vp9_sb_mv_ref_encoding_array,
vp9_sb_mv_ref_tree, NEARESTMV);
}
void vp9_init_mode_contexts(VP9_COMMON *pc) {
vpx_memset(pc->fc.inter_mode_counts, 0, sizeof(pc->fc.inter_mode_counts));
vpx_memcpy(pc->fc.inter_mode_probs, default_inter_mode_probs,
sizeof(default_inter_mode_probs));
}
void vp9_accum_mv_refs(VP9_COMMON *pc,
MB_PREDICTION_MODE m,
const int context) {
unsigned int (*inter_mode_counts)[VP9_INTER_MODES - 1][2] =
pc->fc.inter_mode_counts;
if (m == ZEROMV) {
++inter_mode_counts[context][0][0];
} else {
++inter_mode_counts[context][0][1];
if (m == NEARESTMV) {
++inter_mode_counts[context][1][0];
} else {
++inter_mode_counts[context][1][1];
if (m == NEARMV) {
++inter_mode_counts[context][2][0];
} else {
++inter_mode_counts[context][2][1];
}
}
}
}
#define MVREF_COUNT_SAT 20
#define MVREF_MAX_UPDATE_FACTOR 128
void vp9_adapt_mode_context(VP9_COMMON *pc) {
int i, j;
unsigned int (*inter_mode_counts)[VP9_INTER_MODES - 1][2] =
pc->fc.inter_mode_counts;
vp9_prob (*mode_context)[VP9_INTER_MODES - 1] = pc->fc.inter_mode_probs;
for (j = 0; j < INTER_MODE_CONTEXTS; j++) {
for (i = 0; i < VP9_INTER_MODES - 1; i++) {
int count = inter_mode_counts[j][i][0] + inter_mode_counts[j][i][1];
int factor;
count = count > MVREF_COUNT_SAT ? MVREF_COUNT_SAT : count;
factor = (MVREF_MAX_UPDATE_FACTOR * count / MVREF_COUNT_SAT);
mode_context[j][i] = weighted_prob(
pc->fc.pre_inter_mode_probs[j][i],
get_binary_prob(inter_mode_counts[j][i][0],
inter_mode_counts[j][i][1]),
factor);
}
}
}
#define MODE_COUNT_SAT 20
#define MODE_MAX_UPDATE_FACTOR 128
static int update_mode_ct(vp9_prob pre_prob, vp9_prob prob,
unsigned int ct[2]) {
const int count = MIN(ct[0] + ct[1], MODE_COUNT_SAT);
const int factor = MODE_MAX_UPDATE_FACTOR * count / MODE_COUNT_SAT;
return weighted_prob(pre_prob, prob, factor);
}
static int update_mode_ct2(vp9_prob pre_prob, unsigned int ct[2]) {
return update_mode_ct(pre_prob, get_binary_prob(ct[0], ct[1]), ct);
}
static vp9_prob update_tx_ct(vp9_prob prob, unsigned int ct[2]) {
const int count = MIN(ct[0] + ct[1], MODE_COUNT_SAT);
const int factor = count * MODE_MAX_UPDATE_FACTOR / MODE_COUNT_SAT;
return weighted_prob(prob, get_binary_prob(ct[0], ct[1]), factor);
}
static void update_mode_probs(int n_modes,
const vp9_tree_index *tree, unsigned int *cnt,
vp9_prob *pre_probs, vp9_prob *dst_probs,
unsigned int tok0_offset) {
#define MAX_PROBS 32
vp9_prob probs[MAX_PROBS];
unsigned int branch_ct[MAX_PROBS][2];
int t;
assert(n_modes - 1 < MAX_PROBS);
vp9_tree_probs_from_distribution(tree, probs, branch_ct, cnt, tok0_offset);
for (t = 0; t < n_modes - 1; ++t)
dst_probs[t] = update_mode_ct(pre_probs[t], probs[t], branch_ct[t]);
}
// #define MODE_COUNT_TESTING
void vp9_adapt_mode_probs(VP9_COMMON *cm) {
int i, j;
FRAME_CONTEXT *fc = &cm->fc;
#ifdef MODE_COUNT_TESTING
int t;
printf("static const unsigned int\nymode_counts"
"[VP9_INTRA_MODES] = {\n");
for (t = 0; t < VP9_INTRA_MODES; ++t)
printf("%d, ", fc->ymode_counts[t]);
printf("};\n");
printf("static const unsigned int\nuv_mode_counts"
"[VP9_INTRA_MODES] [VP9_INTRA_MODES] = {\n");
for (i = 0; i < VP9_INTRA_MODES; ++i) {
printf(" {");
for (t = 0; t < VP9_INTRA_MODES; ++t)
printf("%d, ", fc->uv_mode_counts[i][t]);
printf("},\n");
}
printf("};\n");
printf("static const unsigned int\nbmode_counts"
"[VP9_NKF_BINTRAMODES] = {\n");
for (t = 0; t < VP9_NKF_BINTRAMODES; ++t)
printf("%d, ", fc->bmode_counts[t]);
printf("};\n");
printf("static const unsigned int\ni8x8_mode_counts"
"[VP9_I8X8_MODES] = {\n");
for (t = 0; t < VP9_I8X8_MODES; ++t)
printf("%d, ", fc->i8x8_mode_counts[t]);
printf("};\n");
printf("static const unsigned int\nmbsplit_counts"
"[VP9_NUMMBSPLITS] = {\n");
for (t = 0; t < VP9_NUMMBSPLITS; ++t)
printf("%d, ", fc->mbsplit_counts[t]);
printf("};\n");
#endif
for (i = 0; i < INTRA_INTER_CONTEXTS; i++)
fc->intra_inter_prob[i] = update_mode_ct2(fc->pre_intra_inter_prob[i],
fc->intra_inter_count[i]);
for (i = 0; i < COMP_INTER_CONTEXTS; i++)
fc->comp_inter_prob[i] = update_mode_ct2(fc->pre_comp_inter_prob[i],
fc->comp_inter_count[i]);
for (i = 0; i < REF_CONTEXTS; i++)
fc->comp_ref_prob[i] = update_mode_ct2(fc->pre_comp_ref_prob[i],
fc->comp_ref_count[i]);
for (i = 0; i < REF_CONTEXTS; i++)
for (j = 0; j < 2; j++)
fc->single_ref_prob[i][j] = update_mode_ct2(fc->pre_single_ref_prob[i][j],
fc->single_ref_count[i][j]);
for (i = 0; i < BLOCK_SIZE_GROUPS; i++)
update_mode_probs(VP9_INTRA_MODES, vp9_intra_mode_tree,
fc->y_mode_counts[i], fc->pre_y_mode_prob[i],
fc->y_mode_prob[i], 0);
for (i = 0; i < VP9_INTRA_MODES; ++i)
update_mode_probs(VP9_INTRA_MODES, vp9_intra_mode_tree,
fc->uv_mode_counts[i], fc->pre_uv_mode_prob[i],
fc->uv_mode_prob[i], 0);
for (i = 0; i < NUM_PARTITION_CONTEXTS; i++)
update_mode_probs(PARTITION_TYPES, vp9_partition_tree,
fc->partition_counts[i], fc->pre_partition_prob[i],
fc->partition_prob[INTER_FRAME][i], 0);
if (cm->mcomp_filter_type == SWITCHABLE) {
for (i = 0; i <= VP9_SWITCHABLE_FILTERS; i++)
update_mode_probs(VP9_SWITCHABLE_FILTERS, vp9_switchable_interp_tree,
fc->switchable_interp_count[i],
fc->pre_switchable_interp_prob[i],
fc->switchable_interp_prob[i], 0);
}
if (cm->txfm_mode == TX_MODE_SELECT) {
int j;
unsigned int branch_ct_8x8p[TX_SIZE_MAX_SB - 3][2];
unsigned int branch_ct_16x16p[TX_SIZE_MAX_SB - 2][2];
unsigned int branch_ct_32x32p[TX_SIZE_MAX_SB - 1][2];
for (i = 0; i < TX_SIZE_CONTEXTS; ++i) {
tx_counts_to_branch_counts_8x8(fc->tx_count_8x8p[i], branch_ct_8x8p);
for (j = 0; j < TX_SIZE_MAX_SB - 3; ++j)
fc->tx_probs_8x8p[i][j] = update_tx_ct(fc->pre_tx_probs_8x8p[i][j],
branch_ct_8x8p[j]);
tx_counts_to_branch_counts_16x16(fc->tx_count_16x16p[i],
branch_ct_16x16p);
for (j = 0; j < TX_SIZE_MAX_SB - 2; ++j)
fc->tx_probs_16x16p[i][j] = update_tx_ct(fc->pre_tx_probs_16x16p[i][j],
branch_ct_16x16p[j]);
tx_counts_to_branch_counts_32x32(fc->tx_count_32x32p[i],
branch_ct_32x32p);
for (j = 0; j < TX_SIZE_MAX_SB - 1; ++j)
fc->tx_probs_32x32p[i][j] = update_tx_ct(fc->pre_tx_probs_32x32p[i][j],
branch_ct_32x32p[j]);
}
}
for (i = 0; i < MBSKIP_CONTEXTS; ++i)
fc->mbskip_probs[i] = update_mode_ct2(fc->pre_mbskip_probs[i],
fc->mbskip_count[i]);
}
static void set_default_lf_deltas(MACROBLOCKD *xd) {
xd->mode_ref_lf_delta_enabled = 1;
xd->mode_ref_lf_delta_update = 1;
xd->ref_lf_deltas[INTRA_FRAME] = 1;
xd->ref_lf_deltas[LAST_FRAME] = 0;
xd->ref_lf_deltas[GOLDEN_FRAME] = -1;
xd->ref_lf_deltas[ALTREF_FRAME] = -1;
xd->mode_lf_deltas[0] = 0; // Zero
xd->mode_lf_deltas[1] = 0; // New mv
}
void vp9_setup_past_independence(VP9_COMMON *cm, MACROBLOCKD *xd) {
// Reset the segment feature data to the default stats:
// Features disabled, 0, with delta coding (Default state).
int i;
vp9_clearall_segfeatures(&xd->seg);
xd->seg.abs_delta = SEGMENT_DELTADATA;
if (cm->last_frame_seg_map)
vpx_memset(cm->last_frame_seg_map, 0, (cm->mi_rows * cm->mi_cols));
// Reset the mode ref deltas for loop filter
vpx_memset(xd->last_ref_lf_deltas, 0, sizeof(xd->last_ref_lf_deltas));
vpx_memset(xd->last_mode_lf_deltas, 0, sizeof(xd->last_mode_lf_deltas));
set_default_lf_deltas(xd);
vp9_default_coef_probs(cm);
vp9_init_mbmode_probs(cm);
vpx_memcpy(cm->kf_y_mode_prob, vp9_kf_default_bmode_probs,
sizeof(vp9_kf_default_bmode_probs));
vp9_init_mv_probs(cm);
// To force update of the sharpness
cm->last_sharpness_level = -1;
vp9_init_mode_contexts(cm);
if ((cm->frame_type == KEY_FRAME) ||
cm->error_resilient_mode || (cm->reset_frame_context == 3)) {
// Reset all frame contexts.
for (i = 0; i < NUM_FRAME_CONTEXTS; ++i)
vpx_memcpy(&cm->frame_contexts[i], &cm->fc, sizeof(cm->fc));
} else if (cm->reset_frame_context == 2) {
// Reset only the frame context specified in the frame header.
vpx_memcpy(&cm->frame_contexts[cm->frame_context_idx], &cm->fc,
sizeof(cm->fc));
}
vpx_memset(cm->prev_mip, 0,
cm->mode_info_stride * (cm->mi_rows + 1) * sizeof(MODE_INFO));
vpx_memset(cm->mip, 0,
cm->mode_info_stride * (cm->mi_rows + 1) * sizeof(MODE_INFO));
vp9_update_mode_info_border(cm, cm->mip);
vp9_update_mode_info_in_image(cm, cm->mi);
vp9_update_mode_info_border(cm, cm->prev_mip);
vp9_update_mode_info_in_image(cm, cm->prev_mi);
vpx_memset(cm->ref_frame_sign_bias, 0, sizeof(cm->ref_frame_sign_bias));
cm->frame_context_idx = 0;
}
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