| /* |
| * 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. |
| */ |
| |
| |
| #ifndef VP10_COMMON_ENTROPYMV_H_ |
| #define VP10_COMMON_ENTROPYMV_H_ |
| |
| #include "./vpx_config.h" |
| |
| #include "vpx_dsp/prob.h" |
| |
| #include "vp10/common/mv.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| struct VP10Common; |
| |
| void vp10_init_mv_probs(struct VP10Common *cm); |
| |
| void vp10_adapt_mv_probs(struct VP10Common *cm, int usehp); |
| int vp10_use_mv_hp(const MV *ref); |
| |
| #define MV_UPDATE_PROB 252 |
| |
| /* Symbols for coding which components are zero jointly */ |
| #define MV_JOINTS 4 |
| typedef enum { |
| 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 */ |
| } 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 */ |
| #define MV_CLASSES 11 |
| typedef enum { |
| 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 */ |
| } MV_CLASS_TYPE; |
| |
| #define CLASS0_BITS 1 /* bits at integer precision for class 0 */ |
| #define CLASS0_SIZE (1 << CLASS0_BITS) |
| #define MV_OFFSET_BITS (MV_CLASSES + CLASS0_BITS - 2) |
| #define MV_FP_SIZE 4 |
| |
| #define MV_MAX_BITS (MV_CLASSES + CLASS0_BITS + 2) |
| #define MV_MAX ((1 << MV_MAX_BITS) - 1) |
| #define MV_VALS ((MV_MAX << 1) + 1) |
| |
| #define MV_IN_USE_BITS 14 |
| #define MV_UPP ((1 << MV_IN_USE_BITS) - 1) |
| #define MV_LOW (-(1 << MV_IN_USE_BITS)) |
| |
| extern const vpx_tree_index vp10_mv_joint_tree[]; |
| extern const vpx_tree_index vp10_mv_class_tree[]; |
| extern const vpx_tree_index vp10_mv_class0_tree[]; |
| extern const vpx_tree_index vp10_mv_fp_tree[]; |
| |
| typedef struct { |
| vpx_prob sign; |
| vpx_prob classes[MV_CLASSES - 1]; |
| vpx_prob class0[CLASS0_SIZE - 1]; |
| vpx_prob bits[MV_OFFSET_BITS]; |
| vpx_prob class0_fp[CLASS0_SIZE][MV_FP_SIZE - 1]; |
| vpx_prob fp[MV_FP_SIZE - 1]; |
| vpx_prob class0_hp; |
| vpx_prob hp; |
| } nmv_component; |
| |
| typedef struct { |
| vpx_prob joints[MV_JOINTS - 1]; |
| nmv_component comps[2]; |
| } nmv_context; |
| |
| static INLINE MV_JOINT_TYPE vp10_get_mv_joint(const MV *mv) { |
| 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; |
| } |
| } |
| |
| MV_CLASS_TYPE vp10_get_mv_class(int z, int *offset); |
| |
| 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; |
| |
| void vp10_inc_mv(const MV *mv, nmv_context_counts *mvctx, const int usehp); |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif // VP10_COMMON_ENTROPYMV_H_ |