| /* |
| * Copyright (c) 2021, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 3-Clause Clear License |
| * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear |
| * License was not distributed with this source code in the LICENSE file, you |
| * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. 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 |
| * aomedia.org/license/patent-license/. |
| */ |
| |
| #ifndef AOM_AV1_COMMON_ENTROPYMV_H_ |
| #define AOM_AV1_COMMON_ENTROPYMV_H_ |
| |
| #include "config/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); |
| |
| #define MV_UPDATE_PROB 252 |
| |
| /* Symbols for coding which components are zero jointly */ |
| #define MV_JOINTS 4 |
| 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 */ |
| } UENUM1BYTE(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 |
| 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 */ |
| } UENUM1BYTE(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_BITS_CONTEXTS 6 |
| #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) |
| #define MV_LOW (-(1 << MV_IN_USE_BITS)) |
| |
| typedef struct { |
| aom_cdf_prob classes_cdf[CDF_SIZE(MV_CLASSES)]; |
| aom_cdf_prob class0_fp_cdf[CLASS0_SIZE][CDF_SIZE(MV_FP_SIZE)]; |
| aom_cdf_prob fp_cdf[CDF_SIZE(MV_FP_SIZE)]; |
| aom_cdf_prob sign_cdf[CDF_SIZE(2)]; |
| aom_cdf_prob class0_hp_cdf[CDF_SIZE(2)]; |
| aom_cdf_prob hp_cdf[CDF_SIZE(2)]; |
| aom_cdf_prob class0_cdf[CDF_SIZE(CLASS0_SIZE)]; |
| aom_cdf_prob bits_cdf[MV_OFFSET_BITS][CDF_SIZE(2)]; |
| } nmv_component; |
| |
| typedef struct { |
| aom_cdf_prob joints_cdf[CDF_SIZE(MV_JOINTS)]; |
| nmv_component comps[2]; |
| } nmv_context; |
| |
| enum { |
| MV_SUBPEL_NONE = -1, |
| MV_SUBPEL_LOW_PRECISION = 0, |
| MV_SUBPEL_HIGH_PRECISION, |
| } SENUM1BYTE(MvSubpelPrecision); |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif // AOM_AV1_COMMON_ENTROPYMV_H_ |