Line data Source code
1 : /*
2 : * Copyright (c) 2016, Alliance for Open Media. All rights reserved
3 : *
4 : * This source code is subject to the terms of the BSD 2 Clause License and
5 : * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 : * was not distributed with this source code in the LICENSE file, you can
7 : * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 : * Media Patent License 1.0 was not distributed with this source code in the
9 : * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 : */
11 :
12 : #ifndef AV1_COMMON_ENTROPYMV_H_
13 : #define AV1_COMMON_ENTROPYMV_H_
14 :
15 : #include "./aom_config.h"
16 :
17 : #include "aom_dsp/prob.h"
18 :
19 : #include "av1/common/mv.h"
20 :
21 : #ifdef __cplusplus
22 : extern "C" {
23 : #endif
24 :
25 : struct AV1Common;
26 :
27 : void av1_init_mv_probs(struct AV1Common *cm);
28 :
29 : void av1_adapt_mv_probs(struct AV1Common *cm, int usehp);
30 :
31 : #define MV_UPDATE_PROB 252
32 :
33 : /* Symbols for coding which components are zero jointly */
34 : #define MV_JOINTS 4
35 : typedef enum {
36 : MV_JOINT_ZERO = 0, /* Zero vector */
37 : MV_JOINT_HNZVZ = 1, /* Vert zero, hor nonzero */
38 : MV_JOINT_HZVNZ = 2, /* Hor zero, vert nonzero */
39 : MV_JOINT_HNZVNZ = 3, /* Both components nonzero */
40 : } MV_JOINT_TYPE;
41 :
42 0 : static INLINE int mv_joint_vertical(MV_JOINT_TYPE type) {
43 0 : return type == MV_JOINT_HZVNZ || type == MV_JOINT_HNZVNZ;
44 : }
45 :
46 0 : static INLINE int mv_joint_horizontal(MV_JOINT_TYPE type) {
47 0 : return type == MV_JOINT_HNZVZ || type == MV_JOINT_HNZVNZ;
48 : }
49 :
50 : /* Symbols for coding magnitude class of nonzero components */
51 : #define MV_CLASSES 11
52 : typedef enum {
53 : MV_CLASS_0 = 0, /* (0, 2] integer pel */
54 : MV_CLASS_1 = 1, /* (2, 4] integer pel */
55 : MV_CLASS_2 = 2, /* (4, 8] integer pel */
56 : MV_CLASS_3 = 3, /* (8, 16] integer pel */
57 : MV_CLASS_4 = 4, /* (16, 32] integer pel */
58 : MV_CLASS_5 = 5, /* (32, 64] integer pel */
59 : MV_CLASS_6 = 6, /* (64, 128] integer pel */
60 : MV_CLASS_7 = 7, /* (128, 256] integer pel */
61 : MV_CLASS_8 = 8, /* (256, 512] integer pel */
62 : MV_CLASS_9 = 9, /* (512, 1024] integer pel */
63 : MV_CLASS_10 = 10, /* (1024,2048] integer pel */
64 : } MV_CLASS_TYPE;
65 :
66 : #define CLASS0_BITS 1 /* bits at integer precision for class 0 */
67 : #define CLASS0_SIZE (1 << CLASS0_BITS)
68 : #define MV_OFFSET_BITS (MV_CLASSES + CLASS0_BITS - 2)
69 : #define MV_FP_SIZE 4
70 :
71 : #define MV_MAX_BITS (MV_CLASSES + CLASS0_BITS + 2)
72 : #define MV_MAX ((1 << MV_MAX_BITS) - 1)
73 : #define MV_VALS ((MV_MAX << 1) + 1)
74 :
75 : #define MV_IN_USE_BITS 14
76 : #define MV_UPP ((1 << MV_IN_USE_BITS) - 1)
77 : #define MV_LOW (-(1 << MV_IN_USE_BITS))
78 :
79 : extern const aom_tree_index av1_mv_joint_tree[];
80 : extern const aom_tree_index av1_mv_class_tree[];
81 : extern const aom_tree_index av1_mv_class0_tree[];
82 : extern const aom_tree_index av1_mv_fp_tree[];
83 :
84 : typedef struct {
85 : aom_prob sign;
86 : aom_prob classes[MV_CLASSES - 1];
87 : aom_cdf_prob class_cdf[CDF_SIZE(MV_CLASSES)];
88 : aom_prob class0[CLASS0_SIZE - 1];
89 : aom_prob bits[MV_OFFSET_BITS];
90 : aom_prob class0_fp[CLASS0_SIZE][MV_FP_SIZE - 1];
91 : aom_prob fp[MV_FP_SIZE - 1];
92 : aom_cdf_prob class0_fp_cdf[CLASS0_SIZE][CDF_SIZE(MV_FP_SIZE)];
93 : aom_cdf_prob fp_cdf[CDF_SIZE(MV_FP_SIZE)];
94 : aom_prob class0_hp;
95 : aom_prob hp;
96 : } nmv_component;
97 :
98 : typedef struct {
99 : aom_prob joints[MV_JOINTS - 1];
100 : aom_cdf_prob joint_cdf[CDF_SIZE(MV_JOINTS)];
101 : nmv_component comps[2];
102 : } nmv_context;
103 :
104 0 : static INLINE MV_JOINT_TYPE av1_get_mv_joint(const MV *mv) {
105 0 : if (mv->row == 0) {
106 0 : return mv->col == 0 ? MV_JOINT_ZERO : MV_JOINT_HNZVZ;
107 : } else {
108 0 : return mv->col == 0 ? MV_JOINT_HZVNZ : MV_JOINT_HNZVNZ;
109 : }
110 : }
111 :
112 : MV_CLASS_TYPE av1_get_mv_class(int z, int *offset);
113 :
114 : typedef struct {
115 : unsigned int sign[2];
116 : unsigned int classes[MV_CLASSES];
117 : unsigned int class0[CLASS0_SIZE];
118 : unsigned int bits[MV_OFFSET_BITS][2];
119 : unsigned int class0_fp[CLASS0_SIZE][MV_FP_SIZE];
120 : unsigned int fp[MV_FP_SIZE];
121 : unsigned int class0_hp[2];
122 : unsigned int hp[2];
123 : } nmv_component_counts;
124 :
125 : typedef struct {
126 : unsigned int joints[MV_JOINTS];
127 : nmv_component_counts comps[2];
128 : } nmv_context_counts;
129 :
130 : void av1_inc_mv(const MV *mv, nmv_context_counts *mvctx, const int usehp);
131 : #if CONFIG_GLOBAL_MOTION
132 : extern const aom_tree_index
133 : av1_global_motion_types_tree[TREE_SIZE(GLOBAL_TRANS_TYPES)];
134 : #endif // CONFIG_GLOBAL_MOTION
135 : #if !CONFIG_EC_ADAPT
136 : void av1_set_mv_cdfs(nmv_context *ctx);
137 : #endif
138 :
139 : #ifdef __cplusplus
140 : } // extern "C"
141 : #endif
142 :
143 : #endif // AV1_COMMON_ENTROPYMV_H_
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