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1 | /***************************************************************************** |
2 | * Copyright (C) 2013 x265 project | |
3 | * | |
4 | * Authors: Steve Borho <steve@borho.org> | |
5 | * Min Chen <chenm003@163.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. | |
20 | * | |
21 | * This program is also available under a commercial proprietary license. | |
22 | * For more information, contact us at license @ x265.com. | |
23 | *****************************************************************************/ | |
24 | ||
25 | #ifndef X265_SAO_H | |
26 | #define X265_SAO_H | |
27 | ||
28 | #include "common.h" | |
29 | #include "frame.h" | |
30 | #include "entropy.h" | |
31 | ||
32 | namespace x265 { | |
33 | // private namespace | |
34 | ||
35 | enum SAOTypeLen | |
36 | { | |
37 | SAO_EO_LEN = 4, | |
38 | SAO_BO_LEN = 4, | |
39 | SAO_NUM_BO_CLASSES = 32 | |
40 | }; | |
41 | ||
42 | enum SAOType | |
43 | { | |
44 | SAO_EO_0 = 0, | |
45 | SAO_EO_1, | |
46 | SAO_EO_2, | |
47 | SAO_EO_3, | |
48 | SAO_BO, | |
49 | MAX_NUM_SAO_TYPE | |
50 | }; | |
51 | ||
52 | class SAO | |
53 | { | |
54 | protected: | |
55 | ||
56 | enum { SAO_MAX_DEPTH = 4 }; | |
57 | enum { SAO_BO_BITS = 5 }; | |
58 | enum { MAX_NUM_SAO_CLASS = 33 }; | |
59 | enum { SAO_BIT_INC = X265_MAX(X265_DEPTH - 10, 0) }; | |
60 | enum { OFFSET_THRESH = 1 << X265_MIN(X265_DEPTH - 5, 5) }; | |
61 | enum { NUM_EDGETYPE = 5 }; | |
62 | enum { NUM_PLANE = 3 }; | |
63 | enum { NUM_MERGE_MODE = 3 }; | |
64 | ||
65 | static const uint32_t s_eoTable[NUM_EDGETYPE]; | |
66 | ||
67 | typedef int32_t (PerClass[MAX_NUM_SAO_TYPE][MAX_NUM_SAO_CLASS]); | |
68 | typedef int32_t (PerPlane[NUM_PLANE][MAX_NUM_SAO_TYPE][MAX_NUM_SAO_CLASS]); | |
69 | ||
70 | /* allocated per part */ | |
71 | PerClass* m_count; | |
72 | PerClass* m_offset; | |
73 | PerClass* m_offsetOrg; | |
74 | ||
75 | /* allocated per CTU */ | |
76 | PerPlane* m_countPreDblk; | |
77 | PerPlane* m_offsetOrgPreDblk; | |
78 | ||
79 | double m_depthSaoRate[2][4]; | |
80 | pixel* m_offsetBo; | |
81 | int8_t m_offsetEo[NUM_EDGETYPE]; | |
82 | ||
83 | int m_numCuInWidth; | |
84 | int m_numCuInHeight; | |
85 | int m_hChromaShift; | |
86 | int m_vChromaShift; | |
87 | ||
88 | pixel* m_clipTable; | |
89 | pixel* m_clipTableBase; | |
90 | ||
91 | pixel* m_tmpU1[3]; | |
92 | pixel* m_tmpU2[3]; | |
93 | pixel* m_tmpL1; | |
94 | pixel* m_tmpL2; | |
95 | ||
96 | public: | |
97 | ||
98 | struct SAOContexts | |
99 | { | |
100 | Entropy cur; | |
101 | Entropy next; | |
102 | Entropy temp; | |
103 | }; | |
104 | ||
105 | Frame* m_frame; | |
106 | Entropy m_entropyCoder; | |
107 | SAOContexts m_rdContexts; | |
108 | ||
109 | x265_param* m_param; | |
110 | int m_refDepth; | |
111 | int m_numNoSao[2]; | |
112 | ||
113 | double m_lumaLambda; | |
114 | double m_chromaLambda; | |
115 | /* TODO: No doubles for distortion */ | |
116 | ||
117 | SAO(); | |
118 | ||
119 | bool create(x265_param* param); | |
120 | void destroy(); | |
121 | ||
122 | void allocSaoParam(SAOParam* saoParam) const; | |
123 | ||
124 | void startSlice(Frame* pic, Entropy& initState, int qp); | |
125 | void resetStats(); | |
126 | void resetSaoUnit(SaoCtuParam* saoUnit); | |
127 | ||
128 | // CTU-based SAO process without slice granularity | |
129 | void processSaoCu(int addr, int typeIdx, int plane); | |
130 | void processSaoUnitRow(SaoCtuParam* ctuParam, int idxY, int plane); | |
131 | ||
132 | void copySaoUnit(SaoCtuParam* saoUnitDst, const SaoCtuParam* saoUnitSrc); | |
133 | ||
134 | void calcSaoStatsCu(int addr, int plane); | |
135 | void calcSaoStatsCu_BeforeDblk(Frame* pic, int idxX, int idxY); | |
136 | ||
137 | void saoComponentParamDist(SAOParam* saoParam, int addr, int addrUp, int addrLeft, SaoCtuParam mergeSaoParam[2], double* mergeDist); | |
138 | void sao2ChromaParamDist(SAOParam* saoParam, int addr, int addrUp, int addrLeft, SaoCtuParam mergeSaoParam[][2], double* mergeDist); | |
139 | ||
140 | inline int estIterOffset(int typeIdx, int classIdx, double lambda, int offset, int32_t count, int32_t offsetOrg, | |
141 | int32_t* currentDistortionTableBo, double* currentRdCostTableBo); | |
142 | inline int64_t estSaoTypeDist(int plane, int typeIdx, double lambda, int32_t* currentDistortionTableBo, double* currentRdCostTableBo); | |
143 | ||
144 | void rdoSaoUnitRowInit(SAOParam* saoParam); | |
145 | void rdoSaoUnitRowEnd(const SAOParam* saoParam, int numctus); | |
146 | void rdoSaoUnitRow(SAOParam* saoParam, int idxY); | |
147 | }; | |
148 | ||
149 | } | |
150 | ||
151 | #endif // ifndef X265_SAO_H |