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aom/av1/common/entropymv.c

265 строки
11 KiB
C
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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include "av1/common/onyxc_int.h"
#include "av1/common/entropymv.h"
// Integer pel reference mv threshold for use of high-precision 1/8 mv
#define COMPANDED_MVREF_THRESH 8
const aom_tree_index av1_mv_joint_tree[TREE_SIZE(MV_JOINTS)] = {
-MV_JOINT_ZERO, 2, -MV_JOINT_HNZVZ, 4, -MV_JOINT_HZVNZ, -MV_JOINT_HNZVNZ
};
/* clang-format off */
const aom_tree_index av1_mv_class_tree[TREE_SIZE(MV_CLASSES)] = {
-MV_CLASS_0, 2,
-MV_CLASS_1, 4,
6, 8,
-MV_CLASS_2, -MV_CLASS_3,
10, 12,
-MV_CLASS_4, -MV_CLASS_5,
-MV_CLASS_6, 14,
16, 18,
-MV_CLASS_7, -MV_CLASS_8,
-MV_CLASS_9, -MV_CLASS_10,
};
/* clang-format on */
const aom_tree_index av1_mv_class0_tree[TREE_SIZE(CLASS0_SIZE)] = {
-0, -1,
};
const aom_tree_index av1_mv_fp_tree[TREE_SIZE(MV_FP_SIZE)] = { -0, 2, -1,
4, -2, -3 };
static const nmv_context default_nmv_context = {
{ 32, 64, 96 },
{ {
// Vertical component
128, // sign
{ 224, 144, 192, 168, 192, 176, 192, 198, 198, 245 }, // class
{ 216 }, // class0
{ 136, 140, 148, 160, 176, 192, 224, 234, 234, 240 }, // bits
{ { 128, 128, 64 }, { 96, 112, 64 } }, // class0_fp
{ 64, 96, 64 }, // fp
160, // class0_hp bit
128, // hp
},
{
// Horizontal component
128, // sign
{ 216, 128, 176, 160, 176, 176, 192, 198, 198, 208 }, // class
{ 208 }, // class0
{ 136, 140, 148, 160, 176, 192, 224, 234, 234, 240 }, // bits
{ { 128, 128, 64 }, { 96, 112, 64 } }, // class0_fp
{ 64, 96, 64 }, // fp
160, // class0_hp bit
128, // hp
} },
};
static const uint8_t log_in_base_2[] = {
0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10
};
static INLINE int mv_class_base(MV_CLASS_TYPE c) {
return c ? CLASS0_SIZE << (c + 2) : 0;
}
MV_CLASS_TYPE av1_get_mv_class(int z, int *offset) {
const MV_CLASS_TYPE c = (z >= CLASS0_SIZE * 4096)
? MV_CLASS_10
: (MV_CLASS_TYPE)log_in_base_2[z >> 3];
if (offset) *offset = z - mv_class_base(c);
return c;
}
int av1_use_mv_hp(const MV *ref) {
#if CONFIG_MISC_FIXES
(void)ref;
return 1;
#else
return (abs(ref->row) >> 3) < COMPANDED_MVREF_THRESH &&
(abs(ref->col) >> 3) < COMPANDED_MVREF_THRESH;
#endif
}
static void inc_mv_component(int v, nmv_component_counts *comp_counts, int incr,
int usehp) {
int s, z, c, o, d, e, f;
assert(v != 0); /* should not be zero */
s = v < 0;
comp_counts->sign[s] += incr;
z = (s ? -v : v) - 1; /* magnitude - 1 */
c = av1_get_mv_class(z, &o);
comp_counts->classes[c] += incr;
d = (o >> 3); /* int mv data */
f = (o >> 1) & 3; /* fractional pel mv data */
e = (o & 1); /* high precision mv data */
if (c == MV_CLASS_0) {
comp_counts->class0[d] += incr;
comp_counts->class0_fp[d][f] += incr;
comp_counts->class0_hp[e] += usehp * incr;
} else {
int i;
int b = c + CLASS0_BITS - 1; // number of bits
for (i = 0; i < b; ++i) comp_counts->bits[i][((d >> i) & 1)] += incr;
comp_counts->fp[f] += incr;
comp_counts->hp[e] += usehp * incr;
}
}
void av1_inc_mv(const MV *mv, nmv_context_counts *counts, const int usehp) {
if (counts != NULL) {
const MV_JOINT_TYPE j = av1_get_mv_joint(mv);
++counts->joints[j];
if (mv_joint_vertical(j)) {
inc_mv_component(mv->row, &counts->comps[0], 1,
!CONFIG_MISC_FIXES || usehp);
}
if (mv_joint_horizontal(j)) {
inc_mv_component(mv->col, &counts->comps[1], 1,
!CONFIG_MISC_FIXES || usehp);
}
}
}
void av1_adapt_mv_probs(AV1_COMMON *cm, int allow_hp) {
int i, j;
#if CONFIG_REF_MV
int idx;
for (idx = 0; idx < NMV_CONTEXTS; ++idx) {
nmv_context *fc = &cm->fc->nmvc[idx];
const nmv_context *pre_fc =
&cm->frame_contexts[cm->frame_context_idx].nmvc[idx];
const nmv_context_counts *counts = &cm->counts.mv[idx];
aom_tree_merge_probs(av1_mv_joint_tree, pre_fc->joints, counts->joints,
fc->joints);
for (i = 0; i < 2; ++i) {
nmv_component *comp = &fc->comps[i];
const nmv_component *pre_comp = &pre_fc->comps[i];
const nmv_component_counts *c = &counts->comps[i];
comp->sign = mode_mv_merge_probs(pre_comp->sign, c->sign);
aom_tree_merge_probs(av1_mv_class_tree, pre_comp->classes, c->classes,
comp->classes);
aom_tree_merge_probs(av1_mv_class0_tree, pre_comp->class0, c->class0,
comp->class0);
for (j = 0; j < MV_OFFSET_BITS; ++j)
comp->bits[j] = mode_mv_merge_probs(pre_comp->bits[j], c->bits[j]);
for (j = 0; j < CLASS0_SIZE; ++j)
aom_tree_merge_probs(av1_mv_fp_tree, pre_comp->class0_fp[j],
c->class0_fp[j], comp->class0_fp[j]);
aom_tree_merge_probs(av1_mv_fp_tree, pre_comp->fp, c->fp, comp->fp);
if (allow_hp) {
comp->class0_hp = mode_mv_merge_probs(pre_comp->class0_hp,
c->class0_hp);
comp->hp = mode_mv_merge_probs(pre_comp->hp, c->hp);
}
}
}
#else
nmv_context *fc = &cm->fc->nmvc;
const nmv_context *pre_fc = &cm->frame_contexts[cm->frame_context_idx].nmvc;
const nmv_context_counts *counts = &cm->counts.mv;
aom_tree_merge_probs(av1_mv_joint_tree, pre_fc->joints, counts->joints,
fc->joints);
for (i = 0; i < 2; ++i) {
nmv_component *comp = &fc->comps[i];
const nmv_component *pre_comp = &pre_fc->comps[i];
const nmv_component_counts *c = &counts->comps[i];
comp->sign = mode_mv_merge_probs(pre_comp->sign, c->sign);
aom_tree_merge_probs(av1_mv_class_tree, pre_comp->classes, c->classes,
comp->classes);
aom_tree_merge_probs(av1_mv_class0_tree, pre_comp->class0, c->class0,
comp->class0);
for (j = 0; j < MV_OFFSET_BITS; ++j)
comp->bits[j] = mode_mv_merge_probs(pre_comp->bits[j], c->bits[j]);
for (j = 0; j < CLASS0_SIZE; ++j)
aom_tree_merge_probs(av1_mv_fp_tree, pre_comp->class0_fp[j],
c->class0_fp[j], comp->class0_fp[j]);
aom_tree_merge_probs(av1_mv_fp_tree, pre_comp->fp, c->fp, comp->fp);
if (allow_hp) {
comp->class0_hp = mode_mv_merge_probs(pre_comp->class0_hp, c->class0_hp);
comp->hp = mode_mv_merge_probs(pre_comp->hp, c->hp);
}
}
#endif
}
void av1_init_mv_probs(AV1_COMMON *cm) {
#if CONFIG_REF_MV
int i;
for (i = 0; i < NMV_CONTEXTS; ++i)
cm->fc->nmvc[i] = default_nmv_context;
#else
cm->fc->nmvc = default_nmv_context;
#endif
}
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