ref: 5d739f507e9859dbe87032139b85770f241e9c24
dir: /vp8/common/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 "onyxc_int.h"
#include "modecont.h"
#include "vpx_mem/vpx_mem.h"
const unsigned int kf_y_mode_cts[8][VP8_YMODES] = {
/* DC V H D45 135 117 153 D27 D63 TM i8x8 BPRED */
{12, 6, 5, 5, 5, 5, 5, 5, 5, 2, 22, 200},
{25, 13, 13, 7, 7, 7, 7, 7, 7, 6, 27, 160},
{31, 17, 18, 8, 8, 8, 8, 8, 8, 9, 26, 139},
{40, 22, 23, 8, 8, 8, 8, 8, 8, 12, 27, 116},
{53, 26, 28, 8, 8, 8, 8, 8, 8, 13, 26, 94},
{68, 33, 35, 8, 8, 8, 8, 8, 8, 17, 20, 68},
{78, 38, 38, 8, 8, 8, 8, 8, 8, 19, 16, 52},
{89, 42, 42, 8, 8, 8, 8, 8, 8, 21, 12, 34},
};
static const unsigned int y_mode_cts [VP8_YMODES] = {
/* DC V H D45 135 117 153 D27 D63 TM i8x8 BPRED */
98, 19, 15, 14, 14, 14, 14, 12, 12, 13, 16, 70
};
static const unsigned int uv_mode_cts [VP8_YMODES] [VP8_UV_MODES] = {
/* DC V H D45 135 117 153 D27 D63 TM */
{ 200, 15, 15, 10, 10, 10, 10, 10, 10, 6}, /* DC */
{ 130, 75, 10, 10, 10, 10, 10, 10, 10, 6}, /* V */
{ 130, 10, 75, 10, 10, 10, 10, 10, 10, 6}, /* H */
{ 130, 15, 10, 75, 10, 10, 10, 10, 10, 6}, /* D45 */
{ 150, 15, 10, 10, 75, 10, 10, 10, 10, 6}, /* D135 */
{ 150, 15, 10, 10, 10, 75, 10, 10, 10, 6}, /* D117 */
{ 150, 15, 10, 10, 10, 10, 75, 10, 10, 6}, /* D153 */
{ 150, 15, 10, 10, 10, 10, 10, 75, 10, 6}, /* D27 */
{ 150, 15, 10, 10, 10, 10, 10, 10, 75, 6}, /* D63 */
{ 160, 30, 30, 10, 10, 10, 10, 10, 10, 16}, /* TM */
{ 132, 46, 40, 10, 10, 10, 10, 10, 10, 18}, /* i8x8 - never used */
{ 150, 35, 41, 10, 10, 10, 10, 10, 10, 10}, /* BPRED */
};
static const unsigned int i8x8_mode_cts [VP8_I8X8_MODES] = {
/* DC V H D45 135 117 153 D27 D63 TM */
73, 49, 61, 30, 30, 30, 30, 30, 30, 13
};
static const unsigned int kf_uv_mode_cts [VP8_YMODES] [VP8_UV_MODES] = {
// DC V H D45 135 117 153 D27 D63 TM
{ 160, 24, 24, 20, 20, 20, 20, 20, 20, 8}, /* DC */
{ 102, 64, 30, 20, 20, 20, 20, 20, 20, 10}, /* V */
{ 102, 30, 64, 20, 20, 20, 20, 20, 20, 10}, /* H */
{ 102, 33, 20, 64, 20, 20, 20, 20, 20, 14}, /* D45 */
{ 102, 33, 20, 20, 64, 20, 20, 20, 20, 14}, /* D135 */
{ 122, 33, 20, 20, 20, 64, 20, 20, 20, 14}, /* D117 */
{ 102, 33, 20, 20, 20, 20, 64, 20, 20, 14}, /* D153 */
{ 102, 33, 20, 20, 20, 20, 20, 64, 20, 14}, /* D27 */
{ 102, 33, 20, 20, 20, 20, 20, 20, 64, 14}, /* D63 */
{ 132, 36, 30, 20, 20, 20, 20, 20, 20, 18}, /* TM */
{ 122, 41, 35, 20, 20, 20, 20, 20, 20, 18}, /* i8x8 - never used */
{ 122, 41, 35, 20, 20, 20, 20, 20, 20, 18}, /* BPRED */
};
static const unsigned int bmode_cts[VP8_BINTRAMODES] = {
/* DC TM VE HE LD RD VR VL HD HU */
43891, 17694, 10036, 3920, 3363, 2546, 5119, 3221, 2471, 1723
};
typedef enum {
SUBMVREF_NORMAL,
SUBMVREF_LEFT_ZED,
SUBMVREF_ABOVE_ZED,
SUBMVREF_LEFT_ABOVE_SAME,
SUBMVREF_LEFT_ABOVE_ZED
} sumvfref_t;
int vp8_mv_cont(const int_mv *l, const int_mv *a) {
int lez = (l->as_int == 0);
int aez = (a->as_int == 0);
int lea = (l->as_int == a->as_int);
if (lea && lez)
return SUBMVREF_LEFT_ABOVE_ZED;
if (lea)
return SUBMVREF_LEFT_ABOVE_SAME;
if (aez)
return SUBMVREF_ABOVE_ZED;
if (lez)
return SUBMVREF_LEFT_ZED;
return SUBMVREF_NORMAL;
}
const vp8_prob vp8_sub_mv_ref_prob [VP8_SUBMVREFS - 1] = { 180, 162, 25};
const vp8_prob vp8_sub_mv_ref_prob2 [SUBMVREF_COUNT][VP8_SUBMVREFS - 1] = {
{ 147, 136, 18 },
{ 106, 145, 1 },
{ 179, 121, 1 },
{ 223, 1, 34 },
{ 208, 1, 1 }
};
vp8_mbsplit vp8_mbsplits [VP8_NUMMBSPLITS] = {
{
0, 0, 0, 0,
0, 0, 0, 0,
1, 1, 1, 1,
1, 1, 1, 1,
},
{
0, 0, 1, 1,
0, 0, 1, 1,
0, 0, 1, 1,
0, 0, 1, 1,
},
{
0, 0, 1, 1,
0, 0, 1, 1,
2, 2, 3, 3,
2, 2, 3, 3,
},
{
0, 1, 2, 3,
4, 5, 6, 7,
8, 9, 10, 11,
12, 13, 14, 15,
},
};
const int vp8_mbsplit_count [VP8_NUMMBSPLITS] = { 2, 2, 4, 16};
const vp8_prob vp8_mbsplit_probs [VP8_NUMMBSPLITS - 1] = { 110, 111, 150};
/* Array indices are identical to previously-existing INTRAMODECONTEXTNODES. */
const vp8_tree_index vp8_bmode_tree[VP8_BINTRAMODES * 2 - 2] = /* INTRAMODECONTEXTNODE value */
{
-B_DC_PRED, 2, /* 0 = DC_NODE */
-B_TM_PRED, 4, /* 1 = TM_NODE */
-B_VE_PRED, 6, /* 2 = VE_NODE */
8, 12, /* 3 = COM_NODE */
-B_HE_PRED, 10, /* 4 = HE_NODE */
-B_RD_PRED, -B_VR_PRED, /* 5 = RD_NODE */
-B_LD_PRED, 14, /* 6 = LD_NODE */
-B_VL_PRED, 16, /* 7 = VL_NODE */
-B_HD_PRED, -B_HU_PRED /* 8 = HD_NODE */
};
/* Again, these trees use the same probability indices as their
explicitly-programmed predecessors. */
const vp8_tree_index vp8_ymode_tree[VP8_YMODES * 2 - 2] = {
2, 14,
-DC_PRED, 4,
6, 8,
-D45_PRED, -D135_PRED,
10, 12,
-D117_PRED, -D153_PRED,
-D27_PRED, -D63_PRED,
16, 18,
-V_PRED, -H_PRED,
-TM_PRED, 20,
-B_PRED, -I8X8_PRED
};
const vp8_tree_index vp8_kf_ymode_tree[VP8_YMODES * 2 - 2] = {
2, 14,
-DC_PRED, 4,
6, 8,
-D45_PRED, -D135_PRED,
10, 12,
-D117_PRED, -D153_PRED,
-D27_PRED, -D63_PRED,
16, 18,
-V_PRED, -H_PRED,
-TM_PRED, 20,
-B_PRED, -I8X8_PRED
};
const vp8_tree_index vp8_i8x8_mode_tree[VP8_I8X8_MODES * 2 - 2] = {
2, 14,
-DC_PRED, 4,
6, 8,
-D45_PRED, -D135_PRED,
10, 12,
-D117_PRED, -D153_PRED,
-D27_PRED, -D63_PRED,
-V_PRED, 16,
-H_PRED, -TM_PRED
};
const vp8_tree_index vp8_uv_mode_tree[VP8_UV_MODES * 2 - 2] = {
2, 14,
-DC_PRED, 4,
6, 8,
-D45_PRED, -D135_PRED,
10, 12,
-D117_PRED, -D153_PRED,
-D27_PRED, -D63_PRED,
-V_PRED, 16,
-H_PRED, -TM_PRED
};
const vp8_tree_index vp8_mbsplit_tree[6] = {
-PARTITIONING_4X4, 2,
-PARTITIONING_8X8, 4,
-PARTITIONING_16X8, -PARTITIONING_8X16,
};
const vp8_tree_index vp8_mv_ref_tree[8] = {
-ZEROMV, 2,
-NEARESTMV, 4,
-NEARMV, 6,
-NEWMV, -SPLITMV
};
#if CONFIG_SUPERBLOCKS
const vp8_tree_index vp8_sb_mv_ref_tree[6] = {
-ZEROMV, 2,
-NEARESTMV, 4,
-NEARMV, -NEWMV
};
#endif
const vp8_tree_index vp8_sub_mv_ref_tree[6] = {
-LEFT4X4, 2,
-ABOVE4X4, 4,
-ZERO4X4, -NEW4X4
};
struct vp8_token_struct vp8_bmode_encodings [VP8_BINTRAMODES];
struct vp8_token_struct vp8_ymode_encodings [VP8_YMODES];
#if CONFIG_SUPERBLOCKS
struct vp8_token_struct vp8_sb_kf_ymode_encodings [VP8_I32X32_MODES];
#endif
struct vp8_token_struct vp8_kf_ymode_encodings [VP8_YMODES];
struct vp8_token_struct vp8_uv_mode_encodings [VP8_UV_MODES];
struct vp8_token_struct vp8_i8x8_mode_encodings [VP8_I8X8_MODES];
struct vp8_token_struct vp8_mbsplit_encodings [VP8_NUMMBSPLITS];
struct vp8_token_struct vp8_mv_ref_encoding_array [VP8_MVREFS];
#if CONFIG_SUPERBLOCKS
struct vp8_token_struct vp8_sb_mv_ref_encoding_array [VP8_MVREFS];
#endif
struct vp8_token_struct vp8_sub_mv_ref_encoding_array [VP8_SUBMVREFS];
void vp8_init_mbmode_probs(VP8_COMMON *x) {
unsigned int bct [VP8_YMODES] [2]; /* num Ymodes > num UV modes */
vp8_tree_probs_from_distribution(VP8_YMODES, vp8_ymode_encodings,
vp8_ymode_tree, x->fc.ymode_prob, bct, y_mode_cts, 256, 1);
{
int i;
for (i = 0; i < 8; i++) {
vp8_tree_probs_from_distribution(
VP8_YMODES, vp8_kf_ymode_encodings, vp8_kf_ymode_tree,
x->kf_ymode_prob[i], bct, kf_y_mode_cts[i],
256, 1);
#if CONFIG_SUPERBLOCKS
vp8_tree_probs_from_distribution(
VP8_I32X32_MODES, vp8_sb_kf_ymode_encodings, vp8_sb_ymode_tree,
x->sb_kf_ymode_prob[i], bct, kf_y_mode_cts[i],
256, 1);
#endif
}
}
{
int i;
for (i = 0; i < VP8_YMODES; i++) {
vp8_tree_probs_from_distribution(
VP8_UV_MODES, vp8_uv_mode_encodings, vp8_uv_mode_tree,
x->kf_uv_mode_prob[i], bct, kf_uv_mode_cts[i],
256, 1);
vp8_tree_probs_from_distribution(
VP8_UV_MODES, vp8_uv_mode_encodings, vp8_uv_mode_tree,
x->fc.uv_mode_prob[i], bct, uv_mode_cts[i],
256, 1);
}
}
vp8_tree_probs_from_distribution(
VP8_I8X8_MODES, vp8_i8x8_mode_encodings, vp8_i8x8_mode_tree,
x->fc.i8x8_mode_prob, bct, i8x8_mode_cts,
256, 1);
vpx_memcpy(x->fc.sub_mv_ref_prob, vp8_sub_mv_ref_prob2, sizeof(vp8_sub_mv_ref_prob2));
vpx_memcpy(x->fc.mbsplit_prob, vp8_mbsplit_probs, sizeof(vp8_mbsplit_probs));
vpx_memcpy(x->fc.switchable_interp_prob, vp8_switchable_interp_prob,
sizeof(vp8_switchable_interp_prob));
}
static void intra_bmode_probs_from_distribution(
vp8_prob p [VP8_BINTRAMODES - 1],
unsigned int branch_ct [VP8_BINTRAMODES - 1] [2],
const unsigned int events [VP8_BINTRAMODES]) {
vp8_tree_probs_from_distribution(VP8_BINTRAMODES, vp8_bmode_encodings,
vp8_bmode_tree, p, branch_ct, events, 256, 1);
}
void vp8_default_bmode_probs(vp8_prob p [VP8_BINTRAMODES - 1]) {
unsigned int branch_ct [VP8_BINTRAMODES - 1] [2];
intra_bmode_probs_from_distribution(p, branch_ct, bmode_cts);
}
void vp8_kf_default_bmode_probs(vp8_prob p [VP8_BINTRAMODES] [VP8_BINTRAMODES] [VP8_BINTRAMODES - 1]) {
unsigned int branch_ct [VP8_BINTRAMODES - 1] [2];
int i = 0;
do {
int j = 0;
do {
intra_bmode_probs_from_distribution(
p[i][j], branch_ct, vp8_kf_default_bmode_counts[i][j]);
} while (++j < VP8_BINTRAMODES);
} while (++i < VP8_BINTRAMODES);
}
#if VP8_SWITCHABLE_FILTERS == 3
const vp8_tree_index vp8_switchable_interp_tree[VP8_SWITCHABLE_FILTERS*2-2] = {
-0, 2,
-1, -2
};
struct vp8_token_struct vp8_switchable_interp_encodings[VP8_SWITCHABLE_FILTERS];
const INTERPOLATIONFILTERTYPE vp8_switchable_interp[VP8_SWITCHABLE_FILTERS] = {
EIGHTTAP, SIXTAP, EIGHTTAP_SHARP};
const int vp8_switchable_interp_map[SWITCHABLE+1] = {1, -1, 0, 2, -1};
const vp8_prob vp8_switchable_interp_prob [VP8_SWITCHABLE_FILTERS+1]
[VP8_SWITCHABLE_FILTERS-1] = {
{248, 192}, { 32, 248}, { 32, 32}, {192, 160}
};
#elif VP8_SWITCHABLE_FILTERS == 2
const vp8_tree_index vp8_switchable_interp_tree[VP8_SWITCHABLE_FILTERS*2-2] = {
-0, -1,
};
struct vp8_token_struct vp8_switchable_interp_encodings[VP8_SWITCHABLE_FILTERS];
const vp8_prob vp8_switchable_interp_prob [VP8_SWITCHABLE_FILTERS+1]
[VP8_SWITCHABLE_FILTERS-1] = {
{248},
{ 64},
{192},
};
const INTERPOLATIONFILTERTYPE vp8_switchable_interp[VP8_SWITCHABLE_FILTERS] = {
EIGHTTAP, EIGHTTAP_SHARP};
const int vp8_switchable_interp_map[SWITCHABLE+1] = {-1, -1, 0, 1, -1}; //8, 8s
#endif
void vp8_entropy_mode_init() {
vp8_tokens_from_tree(vp8_bmode_encodings, vp8_bmode_tree);
vp8_tokens_from_tree(vp8_ymode_encodings, vp8_ymode_tree);
vp8_tokens_from_tree(vp8_kf_ymode_encodings, vp8_kf_ymode_tree);
#if CONFIG_SUPERBLOCKS
vp8_tokens_from_tree(vp8_sb_kf_ymode_encodings, vp8_sb_ymode_tree);
#endif
vp8_tokens_from_tree(vp8_uv_mode_encodings, vp8_uv_mode_tree);
vp8_tokens_from_tree(vp8_i8x8_mode_encodings, vp8_i8x8_mode_tree);
vp8_tokens_from_tree(vp8_mbsplit_encodings, vp8_mbsplit_tree);
vp8_tokens_from_tree(vp8_switchable_interp_encodings,
vp8_switchable_interp_tree);
vp8_tokens_from_tree_offset(vp8_mv_ref_encoding_array,
vp8_mv_ref_tree, NEARESTMV);
#if CONFIG_SUPERBLOCKS
vp8_tokens_from_tree_offset(vp8_sb_mv_ref_encoding_array,
vp8_sb_mv_ref_tree, NEARESTMV);
#endif
vp8_tokens_from_tree_offset(vp8_sub_mv_ref_encoding_array,
vp8_sub_mv_ref_tree, LEFT4X4);
}
void vp8_init_mode_contexts(VP8_COMMON *pc) {
vpx_memset(pc->fc.mv_ref_ct, 0, sizeof(pc->fc.mv_ref_ct));
vpx_memset(pc->fc.mv_ref_ct_a, 0, sizeof(pc->fc.mv_ref_ct_a));
vpx_memcpy(pc->fc.mode_context,
default_vp8_mode_contexts,
sizeof(pc->fc.mode_context));
vpx_memcpy(pc->fc.mode_context_a,
default_vp8_mode_contexts,
sizeof(pc->fc.mode_context_a));
}
void vp8_accum_mv_refs(VP8_COMMON *pc,
MB_PREDICTION_MODE m,
const int ct[4]) {
int (*mv_ref_ct)[4][2];
if (pc->refresh_alt_ref_frame)
mv_ref_ct = pc->fc.mv_ref_ct_a;
else
mv_ref_ct = pc->fc.mv_ref_ct;
if (m == ZEROMV) {
++mv_ref_ct [ct[0]] [0] [0];
} else {
++mv_ref_ct [ct[0]] [0] [1];
if (m == NEARESTMV) {
++mv_ref_ct [ct[1]] [1] [0];
} else {
++mv_ref_ct [ct[1]] [1] [1];
if (m == NEARMV) {
++mv_ref_ct [ct[2]] [2] [0];
} else {
++mv_ref_ct [ct[2]] [2] [1];
if (m == NEWMV) {
++mv_ref_ct [ct[3]] [3] [0];
} else {
++mv_ref_ct [ct[3]] [3] [1];
}
}
}
}
}
#define MVREF_COUNT_SAT 20
#define MVREF_MAX_UPDATE_FACTOR 144
void vp8_update_mode_context(VP8_COMMON *pc) {
int i, j;
int (*mv_ref_ct)[4][2];
int (*mode_context)[4];
if (pc->refresh_alt_ref_frame) {
mv_ref_ct = pc->fc.mv_ref_ct_a;
mode_context = pc->fc.mode_context_a;
} else {
mv_ref_ct = pc->fc.mv_ref_ct;
mode_context = pc->fc.mode_context;
}
for (j = 0; j < 6; j++) {
for (i = 0; i < 4; i++) {
int this_prob;
int count = mv_ref_ct[j][i][0] + mv_ref_ct[j][i][1];
int factor;
{
this_prob = count > 0 ? 256 * mv_ref_ct[j][i][0] / count : 128;
count = count > MVREF_COUNT_SAT ? MVREF_COUNT_SAT : count;
factor = (MVREF_MAX_UPDATE_FACTOR * count / MVREF_COUNT_SAT);
this_prob = (pc->fc.vp8_mode_contexts[j][i] * (256 - factor) +
this_prob * factor + 128) >> 8;
this_prob = this_prob ? (this_prob < 255 ? this_prob : 255) : 1;
mode_context[j][i] = this_prob;
}
}
}
}
#include "vp8/common/modecont.h"
void print_mode_contexts(VP8_COMMON *pc) {
int j, i;
printf("\n====================\n");
for (j = 0; j < 6; j++) {
for (i = 0; i < 4; i++) {
printf("%4d ", pc->fc.mode_context[j][i]);
}
printf("\n");
}
printf("====================\n");
for (j = 0; j < 6; j++) {
for (i = 0; i < 4; i++) {
printf("%4d ", pc->fc.mode_context_a[j][i]);
}
printf("\n");
}
}
void print_mv_ref_cts(VP8_COMMON *pc) {
int j, i;
for (j = 0; j < 6; j++) {
for (i = 0; i < 4; i++) {
printf("(%4d:%4d) ",
pc->fc.mv_ref_ct[j][i][0],
pc->fc.mv_ref_ct[j][i][1]);
}
printf("\n");
}
}
// #define MODE_COUNT_TESTING
#define MODE_COUNT_SAT 20
#define MODE_MAX_UPDATE_FACTOR 144
void vp8_adapt_mode_probs(VP8_COMMON *cm) {
int i, t, count, factor;
unsigned int branch_ct[32][2];
vp8_prob ymode_probs[VP8_YMODES - 1];
vp8_prob uvmode_probs[VP8_UV_MODES - 1];
vp8_prob bmode_probs[VP8_BINTRAMODES - 1];
vp8_prob i8x8_mode_probs[VP8_I8X8_MODES - 1];
vp8_prob sub_mv_ref_probs[VP8_SUBMVREFS - 1];
vp8_prob mbsplit_probs[VP8_NUMMBSPLITS - 1];
#ifdef MODE_COUNT_TESTING
printf("static const unsigned int\nymode_counts"
"[VP8_YMODES] = {\n");
for (t = 0; t < VP8_YMODES; ++t) printf("%d, ", cm->fc.ymode_counts[t]);
printf("};\n");
printf("static const unsigned int\nuv_mode_counts"
"[VP8_YMODES] [VP8_UV_MODES] = {\n");
for (i = 0; i < VP8_YMODES; ++i) {
printf(" {");
for (t = 0; t < VP8_UV_MODES; ++t) printf("%d, ", cm->fc.uv_mode_counts[i][t]);
printf("},\n");
}
printf("};\n");
printf("static const unsigned int\nbmode_counts"
"[VP8_BINTRAMODES] = {\n");
for (t = 0; t < VP8_BINTRAMODES; ++t) printf("%d, ", cm->fc.bmode_counts[t]);
printf("};\n");
printf("static const unsigned int\ni8x8_mode_counts"
"[VP8_I8X8_MODES] = {\n");
for (t = 0; t < VP8_I8X8_MODES; ++t) printf("%d, ", cm->fc.i8x8_mode_counts[t]);
printf("};\n");
printf("static const unsigned int\nsub_mv_ref_counts"
"[SUBMVREF_COUNT] [VP8_SUBMVREFS] = {\n");
for (i = 0; i < SUBMVREF_COUNT; ++i) {
printf(" {");
for (t = 0; t < VP8_SUBMVREFS; ++t) printf("%d, ", cm->fc.sub_mv_ref_counts[i][t]);
printf("},\n");
}
printf("};\n");
printf("static const unsigned int\nmbsplit_counts"
"[VP8_NUMMBSPLITS] = {\n");
for (t = 0; t < VP8_NUMMBSPLITS; ++t) printf("%d, ", cm->fc.mbsplit_counts[t]);
printf("};\n");
#endif
vp8_tree_probs_from_distribution(
VP8_YMODES, vp8_ymode_encodings, vp8_ymode_tree,
ymode_probs, branch_ct, cm->fc.ymode_counts,
256, 1);
for (t = 0; t < VP8_YMODES - 1; ++t) {
int prob;
count = branch_ct[t][0] + branch_ct[t][1];
count = count > MODE_COUNT_SAT ? MODE_COUNT_SAT : count;
factor = (MODE_MAX_UPDATE_FACTOR * count / MODE_COUNT_SAT);
prob = ((int)cm->fc.pre_ymode_prob[t] * (256 - factor) +
(int)ymode_probs[t] * factor + 128) >> 8;
if (prob <= 0) cm->fc.ymode_prob[t] = 1;
else if (prob > 255) cm->fc.ymode_prob[t] = 255;
else cm->fc.ymode_prob[t] = prob;
}
for (i = 0; i < VP8_YMODES; ++i) {
vp8_tree_probs_from_distribution(
VP8_UV_MODES, vp8_uv_mode_encodings, vp8_uv_mode_tree,
uvmode_probs, branch_ct, cm->fc.uv_mode_counts[i],
256, 1);
for (t = 0; t < VP8_UV_MODES - 1; ++t) {
int prob;
count = branch_ct[t][0] + branch_ct[t][1];
count = count > MODE_COUNT_SAT ? MODE_COUNT_SAT : count;
factor = (MODE_MAX_UPDATE_FACTOR * count / MODE_COUNT_SAT);
prob = ((int)cm->fc.pre_uv_mode_prob[i][t] * (256 - factor) +
(int)uvmode_probs[t] * factor + 128) >> 8;
if (prob <= 0) cm->fc.uv_mode_prob[i][t] = 1;
else if (prob > 255) cm->fc.uv_mode_prob[i][t] = 255;
else cm->fc.uv_mode_prob[i][t] = prob;
}
}
vp8_tree_probs_from_distribution(
VP8_BINTRAMODES, vp8_bmode_encodings, vp8_bmode_tree,
bmode_probs, branch_ct, cm->fc.bmode_counts,
256, 1);
for (t = 0; t < VP8_BINTRAMODES - 1; ++t) {
int prob;
count = branch_ct[t][0] + branch_ct[t][1];
count = count > MODE_COUNT_SAT ? MODE_COUNT_SAT : count;
factor = (MODE_MAX_UPDATE_FACTOR * count / MODE_COUNT_SAT);
prob = ((int)cm->fc.pre_bmode_prob[t] * (256 - factor) +
(int)bmode_probs[t] * factor + 128) >> 8;
if (prob <= 0) cm->fc.bmode_prob[t] = 1;
else if (prob > 255) cm->fc.bmode_prob[t] = 255;
else cm->fc.bmode_prob[t] = prob;
}
vp8_tree_probs_from_distribution(
VP8_I8X8_MODES, vp8_i8x8_mode_encodings, vp8_i8x8_mode_tree,
i8x8_mode_probs, branch_ct, cm->fc.i8x8_mode_counts,
256, 1);
for (t = 0; t < VP8_I8X8_MODES - 1; ++t) {
int prob;
count = branch_ct[t][0] + branch_ct[t][1];
count = count > MODE_COUNT_SAT ? MODE_COUNT_SAT : count;
factor = (MODE_MAX_UPDATE_FACTOR * count / MODE_COUNT_SAT);
prob = ((int)cm->fc.pre_i8x8_mode_prob[t] * (256 - factor) +
(int)i8x8_mode_probs[t] * factor + 128) >> 8;
if (prob <= 0) cm->fc.i8x8_mode_prob[t] = 1;
else if (prob > 255) cm->fc.i8x8_mode_prob[t] = 255;
else cm->fc.i8x8_mode_prob[t] = prob;
}
for (i = 0; i < SUBMVREF_COUNT; ++i) {
vp8_tree_probs_from_distribution(
VP8_SUBMVREFS, vp8_sub_mv_ref_encoding_array, vp8_sub_mv_ref_tree,
sub_mv_ref_probs, branch_ct, cm->fc.sub_mv_ref_counts[i],
256, 1);
for (t = 0; t < VP8_SUBMVREFS - 1; ++t) {
int prob;
count = branch_ct[t][0] + branch_ct[t][1];
count = count > MODE_COUNT_SAT ? MODE_COUNT_SAT : count;
factor = (MODE_MAX_UPDATE_FACTOR * count / MODE_COUNT_SAT);
prob = ((int)cm->fc.pre_sub_mv_ref_prob[i][t] * (256 - factor) +
(int)sub_mv_ref_probs[t] * factor + 128) >> 8;
if (prob <= 0) cm->fc.sub_mv_ref_prob[i][t] = 1;
else if (prob > 255) cm->fc.sub_mv_ref_prob[i][t] = 255;
else cm->fc.sub_mv_ref_prob[i][t] = prob;
}
}
vp8_tree_probs_from_distribution(
VP8_NUMMBSPLITS, vp8_mbsplit_encodings, vp8_mbsplit_tree,
mbsplit_probs, branch_ct, cm->fc.mbsplit_counts,
256, 1);
for (t = 0; t < VP8_NUMMBSPLITS - 1; ++t) {
int prob;
count = branch_ct[t][0] + branch_ct[t][1];
count = count > MODE_COUNT_SAT ? MODE_COUNT_SAT : count;
factor = (MODE_MAX_UPDATE_FACTOR * count / MODE_COUNT_SAT);
prob = ((int)cm->fc.pre_mbsplit_prob[t] * (256 - factor) +
(int)mbsplit_probs[t] * factor + 128) >> 8;
if (prob <= 0) cm->fc.mbsplit_prob[t] = 1;
else if (prob > 255) cm->fc.mbsplit_prob[t] = 255;
else cm->fc.mbsplit_prob[t] = prob;
}
}