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Diffstat (limited to 'third_party/aom/av1/common/entropymv.h')
| -rw-r--r-- | third_party/aom/av1/common/entropymv.h | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/entropymv.h b/third_party/aom/av1/common/entropymv.h new file mode 100644 index 000000000..2c79d447a --- /dev/null +++ b/third_party/aom/av1/common/entropymv.h @@ -0,0 +1,149 @@ +/* + * 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. + */ + +#ifndef AV1_COMMON_ENTROPYMV_H_ +#define AV1_COMMON_ENTROPYMV_H_ + +#include "./aom_config.h" + +#include "aom_dsp/prob.h" + +#include "av1/common/mv.h" + +#ifdef __cplusplus +extern "C" { +#endif + +struct AV1Common; + +void av1_init_mv_probs(struct AV1Common *cm); + +void av1_adapt_mv_probs(struct AV1Common *cm, int usehp); + +#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 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[]; + +typedef struct { + aom_prob sign; + aom_prob classes[MV_CLASSES - 1]; +#if CONFIG_EC_MULTISYMBOL + aom_cdf_prob class_cdf[CDF_SIZE(MV_CLASSES)]; +#endif + 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]; +#if CONFIG_EC_MULTISYMBOL + aom_cdf_prob class0_fp_cdf[CLASS0_SIZE][CDF_SIZE(MV_FP_SIZE)]; + aom_cdf_prob fp_cdf[CDF_SIZE(MV_FP_SIZE)]; +#endif + aom_prob class0_hp; + aom_prob hp; +} nmv_component; + +typedef struct { + aom_prob joints[MV_JOINTS - 1]; +#if CONFIG_EC_MULTISYMBOL + aom_cdf_prob joint_cdf[CDF_SIZE(MV_JOINTS)]; +#endif + nmv_component comps[2]; +} nmv_context; + +static INLINE MV_JOINT_TYPE av1_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 av1_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 av1_inc_mv(const MV *mv, nmv_context_counts *mvctx, const int usehp); +#if CONFIG_GLOBAL_MOTION +extern const aom_tree_index + av1_global_motion_types_tree[TREE_SIZE(GLOBAL_TRANS_TYPES)]; +#endif // CONFIG_GLOBAL_MOTION +#if CONFIG_EC_MULTISYMBOL +void av1_set_mv_cdfs(nmv_context *ctx); +#endif + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AV1_COMMON_ENTROPYMV_H_ |