ref: b097a3ba82af57c5cf87959f22890148b6de8038
dir: /vp9/common/vp9_entropymode.c/
/*
* 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_modecont.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] = {
{ 149, 13, 48, 141, 174, 131, 54, 61, 109 } /* y = dc */,
{ 120, 17, 119, 132, 103, 103, 54, 100, 130 } /* y = v */,
{ 114, 16, 19, 177, 220, 145, 31, 33, 122 } /* y = h */,
{ 119, 12, 43, 102, 133, 133, 77, 90, 102 } /* y = d45 */,
{ 110, 10, 28, 144, 78, 158, 40, 49, 161 } /* y = d135 */,
{ 114, 10, 46, 169, 50, 96, 48, 70, 150 } /* y = d117 */,
{ 116, 10, 24, 125, 134, 168, 26, 27, 193 } /* y = d153 */,
{ 121, 14, 26, 124, 175, 143, 36, 37, 79 } /* y = d27 */,
{ 116, 13, 54, 100, 105, 122, 58, 126, 122 } /* y = d63 */,
{ 98, 22, 60, 147, 159, 124, 45, 68, 128 } /* y = tm */
};
static const vp9_prob default_if_y_probs[BLOCK_SIZE_GROUPS]
[VP9_INTRA_MODES - 1] = {
{ 42, 31, 23, 150, 161, 193, 32, 53, 100 } /* block_size < 8x8 */,
{ 132, 58, 30, 160, 209, 195, 52, 47, 76 } /* block_size < 16x16 */,
{ 179, 85, 24, 168, 236, 198, 87, 45, 46 } /* block_size < 32x32 */,
{ 221, 176, 63, 133, 233, 121, 125, 105, 34 } /* block_size >= 32x32 */
};
static const vp9_prob default_if_uv_probs[VP9_INTRA_MODES]
[VP9_INTRA_MODES - 1] = {
{ 115, 7, 78, 180, 210, 127, 34, 57, 104 } /* y = dc */,
{ 43, 9, 165, 140, 112, 93, 45, 125, 117 } /* y = v */,
{ 68, 6, 25, 206, 241, 154, 16, 23, 102 } /* y = h */,
{ 90, 5, 48, 117, 155, 134, 61, 88, 96 } /* y = d45 */,
{ 77, 5, 43, 148, 100, 147, 37, 60, 146 } /* y = d135 */,
{ 75, 5, 57, 167, 62, 91, 45, 76, 139 } /* y = d117 */,
{ 86, 4, 34, 155, 185, 163, 22, 29, 160 } /* y = d153 */,
{ 82, 5, 34, 155, 207, 144, 26, 38, 79 } /* y = d27 */,
{ 69, 6, 65, 105, 104, 122, 48, 131, 116 } /* y = d63 */,
{ 86, 16, 114, 177, 189, 108, 28, 72, 120 } /* y = tm */
};
const vp9_prob vp9_partition_probs[NUM_FRAME_TYPES][NUM_PARTITION_CONTEXTS]
[PARTITION_TYPES - 1] = {
{ /* frame_type = keyframe */
/* 8x8 -> 4x4 */
{ 164, 121, 109 } /* a/l both not split */,
{ 69, 11, 129 } /* a split, l not split */,
{ 52, 181, 37 } /* l split, a not split */,
{ 66, 71, 93 } /* a/l both split */,
/* 16x16 -> 8x8 */
{ 154, 48, 43 } /* a/l both not split */,
{ 81, 11, 63 } /* a split, l not split */,
{ 67, 65, 17 } /* l split, a not split */,
{ 57, 18, 24 } /* a/l both split */,
/* 32x32 -> 16x16 */
{ 156, 42, 35 } /* a/l both not split */,
{ 74, 10, 40 } /* a split, l not split */,
{ 59, 53, 10 } /* l split, a not split */,
{ 28, 10, 9 } /* a/l both split */,
/* 64x64 -> 32x32 */
{ 168, 32, 43 } /* a/l both not split */,
{ 59, 13, 41 } /* a split, l not split */,
{ 60, 25, 10 } /* l split, a not split */,
{ 13, 5, 4 } /* a/l both split */
}, { /* frame_type = interframe */
/* 8x8 -> 4x4 */
{ 192, 121, 151 } /* a/l both not split */,
{ 134, 63, 162 } /* a split, l not split */,
{ 136, 134, 127 } /* l split, a not split */,
{ 101, 97, 131 } /* a/l both split */,
/* 16x16 -> 8x8 */
{ 167, 67, 80 } /* a/l both not split */,
{ 87, 36, 70 } /* a split, l not split */,
{ 90, 61, 45 } /* l split, a not split */,
{ 46, 31, 32 } /* a/l both split */,
/* 32x32 -> 16x16 */
{ 167, 63, 75 } /* a/l both not split */,
{ 67, 27, 61 } /* a split, l not split */,
{ 56, 87, 31 } /* l split, a not split */,
{ 15, 13, 11 } /* a/l both split */,
/* 64x64 -> 32x32 */
{ 222, 45, 44 } /* a/l both not split */,
{ 62, 17, 62 } /* a split, l not split */,
{ 52, 65, 16 } /* l split, a not split */,
{ 9, 7, 6 } /* a/l both split */
}
};
/* 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] = {
6, 87, 165, 213
};
static const vp9_prob default_comp_inter_p[COMP_INTER_CONTEXTS] = {
25, 66, 106, 142, 183
};
static const vp9_prob default_comp_ref_p[REF_CONTEXTS] = {
36, 93, 136, 205, 236
};
static const vp9_prob default_single_ref_p[REF_CONTEXTS][2] = {
{ 30, 17 },
{ 80, 66 },
{ 142, 129 },
{ 192, 178 },
{ 235, 248 },
};
void vp9_init_mbmode_probs(VP9_COMMON *x) {
vpx_memcpy(x->fc.uv_mode_prob, default_if_uv_probs,
sizeof(default_if_uv_probs));
vpx_memcpy(x->kf_uv_mode_prob, default_kf_uv_probs,
sizeof(default_kf_uv_probs));
vpx_memcpy(x->fc.y_mode_prob, default_if_y_probs,
sizeof(default_if_y_probs));
vpx_memcpy(x->fc.switchable_interp_prob, vp9_switchable_interp_prob,
sizeof(vp9_switchable_interp_prob));
vpx_memcpy(x->fc.partition_prob, vp9_partition_probs,
sizeof(vp9_partition_probs));
vpx_memcpy(x->fc.intra_inter_prob, default_intra_inter_p,
sizeof(default_intra_inter_p));
vpx_memcpy(x->fc.comp_inter_prob, default_comp_inter_p,
sizeof(default_comp_inter_p));
vpx_memcpy(x->fc.comp_ref_prob, default_comp_ref_p,
sizeof(default_comp_ref_p));
vpx_memcpy(x->fc.single_ref_prob, default_single_ref_p,
sizeof(default_single_ref_p));
}
#if VP9_SWITCHABLE_FILTERS == 3
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] = {
{248, 192}, { 32, 248}, { 32, 32}, {192, 160}
};
#elif VP9_SWITCHABLE_FILTERS == 2
const vp9_tree_index vp9_switchable_interp_tree[VP9_SWITCHABLE_FILTERS*2-2] = {
-0, -1,
};
struct vp9_token vp9_switchable_interp_encodings[VP9_SWITCHABLE_FILTERS];
const vp9_prob vp9_switchable_interp_prob [VP9_SWITCHABLE_FILTERS+1]
[VP9_SWITCHABLE_FILTERS-1] = {
{248},
{ 64},
{192},
};
const INTERPOLATIONFILTERTYPE vp9_switchable_interp[VP9_SWITCHABLE_FILTERS] = {
EIGHTTAP, EIGHTTAP_SHARP};
const int vp9_switchable_interp_map[SWITCHABLE+1] = {-1, 0, 1, -1, -1};
#endif // VP9_SWITCHABLE_FILTERS
// Indicates if the filter is interpolating or non-interpolating
// Note currently only the EIGHTTAP_SMOOTH is non-interpolating
const int vp9_is_interpolating_filter[SWITCHABLE + 1] = {0, 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,
vp9_default_inter_mode_probs,
sizeof(vp9_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 144
static int update_mode_ct(int pre_prob, int prob,
unsigned int branch_ct[2]) {
int factor, count = branch_ct[0] + branch_ct[1];
count = count > MODE_COUNT_SAT ? MODE_COUNT_SAT : count;
factor = (MODE_MAX_UPDATE_FACTOR * count / MODE_COUNT_SAT);
return weighted_prob(pre_prob, prob, 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]);
}
static int update_mode_ct2(int pre_prob, unsigned int branch_ct[2]) {
return update_mode_ct(pre_prob, get_binary_prob(branch_ct[0],
branch_ct[1]), branch_ct);
}
// #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);
}
}
}
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);
xd->mb_segment_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);
for (i = 0; i < NUM_FRAME_CONTEXTS; i++)
vpx_memcpy(&cm->frame_contexts[i], &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;
}