2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
12 #ifndef VP9_COMMON_VP9_ENTROPYMV_H_
13 #define VP9_COMMON_VP9_ENTROPYMV_H_
15 #include "./vpx_config.h"
17 #include "vp9/common/vp9_mv.h"
18 #include "vp9/common/vp9_prob.h"
26 void vp9_init_mv_probs(struct VP9Common *cm);
28 void vp9_adapt_mv_probs(struct VP9Common *cm, int usehp);
29 int vp9_use_mv_hp(const MV *ref);
31 #define MV_UPDATE_PROB 252
33 /* Symbols for coding which components are zero jointly */
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 */
42 static INLINE int mv_joint_vertical(MV_JOINT_TYPE type) {
43 return type == MV_JOINT_HZVNZ || type == MV_JOINT_HNZVNZ;
46 static INLINE int mv_joint_horizontal(MV_JOINT_TYPE type) {
47 return type == MV_JOINT_HNZVZ || type == MV_JOINT_HNZVNZ;
50 /* Symbols for coding magnitude class of nonzero components */
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 */
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)
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)
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))
79 extern const vp9_tree_index vp9_mv_joint_tree[];
80 extern const vp9_tree_index vp9_mv_class_tree[];
81 extern const vp9_tree_index vp9_mv_class0_tree[];
82 extern const vp9_tree_index vp9_mv_fp_tree[];
86 vp9_prob classes[MV_CLASSES - 1];
87 vp9_prob class0[CLASS0_SIZE - 1];
88 vp9_prob bits[MV_OFFSET_BITS];
89 vp9_prob class0_fp[CLASS0_SIZE][MV_FP_SIZE - 1];
90 vp9_prob fp[MV_FP_SIZE - 1];
96 vp9_prob joints[MV_JOINTS - 1];
97 nmv_component comps[2];
100 static INLINE MV_JOINT_TYPE vp9_get_mv_joint(const MV *mv) {
102 return mv->col == 0 ? MV_JOINT_ZERO : MV_JOINT_HNZVZ;
104 return mv->col == 0 ? MV_JOINT_HZVNZ : MV_JOINT_HNZVNZ;
108 MV_CLASS_TYPE vp9_get_mv_class(int z, int *offset);
109 int vp9_get_mv_mag(MV_CLASS_TYPE c, int offset);
113 unsigned int sign[2];
114 unsigned int classes[MV_CLASSES];
115 unsigned int class0[CLASS0_SIZE];
116 unsigned int bits[MV_OFFSET_BITS][2];
117 unsigned int class0_fp[CLASS0_SIZE][MV_FP_SIZE];
118 unsigned int fp[MV_FP_SIZE];
119 unsigned int class0_hp[2];
121 } nmv_component_counts;
124 unsigned int joints[MV_JOINTS];
125 nmv_component_counts comps[2];
126 } nmv_context_counts;
128 void vp9_inc_mv(const MV *mv, nmv_context_counts *mvctx);
134 #endif // VP9_COMMON_VP9_ENTROPYMV_H_