entropymv.h 3.98 KB
Newer Older
Jingning Han's avatar
Jingning Han committed
1
/*
2
 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
Jingning Han's avatar
Jingning Han committed
3
 *
4 5 6 7 8 9
 * 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.
Jingning Han's avatar
Jingning Han committed
10 11
 */

12 13
#ifndef AV1_COMMON_ENTROPYMV_H_
#define AV1_COMMON_ENTROPYMV_H_
Jingning Han's avatar
Jingning Han committed
14

Adrian Grange's avatar
Adrian Grange committed
15
#include "./aom_config.h"
Jingning Han's avatar
Jingning Han committed
16

Yaowu Xu's avatar
Yaowu Xu committed
17
#include "aom_dsp/prob.h"
Jingning Han's avatar
Jingning Han committed
18

Yaowu Xu's avatar
Yaowu Xu committed
19
#include "av1/common/mv.h"
Jingning Han's avatar
Jingning Han committed
20 21 22 23 24

#ifdef __cplusplus
extern "C" {
#endif

25
struct AV1Common;
Jingning Han's avatar
Jingning Han committed
26

27
void av1_init_mv_probs(struct AV1Common *cm);
Jingning Han's avatar
Jingning Han committed
28

29 30
void av1_adapt_mv_probs(struct AV1Common *cm, int usehp);
int av1_use_mv_hp(const MV *ref);
Jingning Han's avatar
Jingning Han committed
31 32 33 34

#define MV_UPDATE_PROB 252

/* Symbols for coding which components are zero jointly */
clang-format's avatar
clang-format committed
35
#define MV_JOINTS 4
Jingning Han's avatar
Jingning Han committed
36
typedef enum {
clang-format's avatar
clang-format committed
37 38 39 40
  MV_JOINT_ZERO = 0,   /* Zero vector */
  MV_JOINT_HNZVZ = 1,  /* Vert zero, hor nonzero */
  MV_JOINT_HZVNZ = 2,  /* Hor zero, vert nonzero */
  MV_JOINT_HNZVNZ = 3, /* Both components nonzero */
Jingning Han's avatar
Jingning Han committed
41 42 43 44 45 46 47 48 49 50 51
} MV_JOINT_TYPE;

static INLINE int mv_joint_vertical(MV_JOINT_TYPE type) {
  return type == MV_JOINT_HZVNZ || type == MV_JOINT_HNZVNZ;
}

static INLINE int mv_joint_horizontal(MV_JOINT_TYPE type) {
  return type == MV_JOINT_HNZVZ || type == MV_JOINT_HNZVNZ;
}

/* Symbols for coding magnitude class of nonzero components */
clang-format's avatar
clang-format committed
52
#define MV_CLASSES 11
Jingning Han's avatar
Jingning Han committed
53
typedef enum {
clang-format's avatar
clang-format committed
54 55 56 57 58 59 60 61 62 63 64
  MV_CLASS_0 = 0,   /* (0, 2]     integer pel */
  MV_CLASS_1 = 1,   /* (2, 4]     integer pel */
  MV_CLASS_2 = 2,   /* (4, 8]     integer pel */
  MV_CLASS_3 = 3,   /* (8, 16]    integer pel */
  MV_CLASS_4 = 4,   /* (16, 32]   integer pel */
  MV_CLASS_5 = 5,   /* (32, 64]   integer pel */
  MV_CLASS_6 = 6,   /* (64, 128]  integer pel */
  MV_CLASS_7 = 7,   /* (128, 256] integer pel */
  MV_CLASS_8 = 8,   /* (256, 512] integer pel */
  MV_CLASS_9 = 9,   /* (512, 1024] integer pel */
  MV_CLASS_10 = 10, /* (1024,2048] integer pel */
Jingning Han's avatar
Jingning Han committed
65 66
} MV_CLASS_TYPE;

clang-format's avatar
clang-format committed
67 68
#define CLASS0_BITS 1 /* bits at integer precision for class 0 */
#define CLASS0_SIZE (1 << CLASS0_BITS)
Jingning Han's avatar
Jingning Han committed
69 70 71
#define MV_OFFSET_BITS (MV_CLASSES + CLASS0_BITS - 2)
#define MV_FP_SIZE 4

clang-format's avatar
clang-format committed
72 73 74
#define MV_MAX_BITS (MV_CLASSES + CLASS0_BITS + 2)
#define MV_MAX ((1 << MV_MAX_BITS) - 1)
#define MV_VALS ((MV_MAX << 1) + 1)
Jingning Han's avatar
Jingning Han committed
75 76

#define MV_IN_USE_BITS 14
clang-format's avatar
clang-format committed
77 78
#define MV_UPP ((1 << MV_IN_USE_BITS) - 1)
#define MV_LOW (-(1 << MV_IN_USE_BITS))
Jingning Han's avatar
Jingning Han committed
79

80 81 82 83
extern const aom_tree_index av1_mv_joint_tree[];
extern const aom_tree_index av1_mv_class_tree[];
extern const aom_tree_index av1_mv_class0_tree[];
extern const aom_tree_index av1_mv_fp_tree[];
Jingning Han's avatar
Jingning Han committed
84 85

typedef struct {
Adrian Grange's avatar
Adrian Grange committed
86 87
  aom_prob sign;
  aom_prob classes[MV_CLASSES - 1];
88 89 90
#if CONFIG_DAALA_EC
  aom_cdf_prob class_cdf[MV_CLASSES];
#endif
Adrian Grange's avatar
Adrian Grange committed
91 92 93 94 95 96
  aom_prob class0[CLASS0_SIZE - 1];
  aom_prob bits[MV_OFFSET_BITS];
  aom_prob class0_fp[CLASS0_SIZE][MV_FP_SIZE - 1];
  aom_prob fp[MV_FP_SIZE - 1];
  aom_prob class0_hp;
  aom_prob hp;
Jingning Han's avatar
Jingning Han committed
97 98 99
} nmv_component;

typedef struct {
Adrian Grange's avatar
Adrian Grange committed
100
  aom_prob joints[MV_JOINTS - 1];
101 102 103
#if CONFIG_DAALA_EC
  aom_cdf_prob joint_cdf[MV_JOINTS];
#endif
Jingning Han's avatar
Jingning Han committed
104 105 106
  nmv_component comps[2];
} nmv_context;

107
static INLINE MV_JOINT_TYPE av1_get_mv_joint(const MV *mv) {
Jingning Han's avatar
Jingning Han committed
108 109 110 111 112 113 114
  if (mv->row == 0) {
    return mv->col == 0 ? MV_JOINT_ZERO : MV_JOINT_HNZVZ;
  } else {
    return mv->col == 0 ? MV_JOINT_HZVNZ : MV_JOINT_HNZVNZ;
  }
}

115
MV_CLASS_TYPE av1_get_mv_class(int z, int *offset);
Jingning Han's avatar
Jingning Han committed
116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132

typedef struct {
  unsigned int sign[2];
  unsigned int classes[MV_CLASSES];
  unsigned int class0[CLASS0_SIZE];
  unsigned int bits[MV_OFFSET_BITS][2];
  unsigned int class0_fp[CLASS0_SIZE][MV_FP_SIZE];
  unsigned int fp[MV_FP_SIZE];
  unsigned int class0_hp[2];
  unsigned int hp[2];
} nmv_component_counts;

typedef struct {
  unsigned int joints[MV_JOINTS];
  nmv_component_counts comps[2];
} nmv_context_counts;

133
void av1_inc_mv(const MV *mv, nmv_context_counts *mvctx, const int usehp);
Jingning Han's avatar
Jingning Han committed
134 135 136 137 138

#ifdef __cplusplus
}  // extern "C"
#endif

139
#endif  // AV1_COMMON_ENTROPYMV_H_