source: SHVCSoftware/branches/SHM-2.0avc-dev/source/Lib/TLibDecoder/TDecEntropy.h @ 577

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1/* The copyright in this software is being made available under the BSD
2 * License, included below. This software may be subject to other third party
3 * and contributor rights, including patent rights, and no such rights are
4 * granted under this license. 
5 *
6 * Copyright (c) 2010-2013, ITU/ISO/IEC
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 *
12 *  * Redistributions of source code must retain the above copyright notice,
13 *    this list of conditions and the following disclaimer.
14 *  * Redistributions in binary form must reproduce the above copyright notice,
15 *    this list of conditions and the following disclaimer in the documentation
16 *    and/or other materials provided with the distribution.
17 *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
18 *    be used to endorse or promote products derived from this software without
19 *    specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34/** \file     TDecEntropy.h
35    \brief    entropy decoder class (header)
36*/
37
38#ifndef __TDECENTROPY__
39#define __TDECENTROPY__
40
41#include "TLibCommon/CommonDef.h"
42#include "TLibCommon/TComBitStream.h"
43#include "TLibCommon/TComSlice.h"
44#include "TLibCommon/TComPic.h"
45#include "TLibCommon/TComPrediction.h"
46#include "TLibCommon/TComSampleAdaptiveOffset.h"
47
48class TDecSbac;
49class TDecCavlc;
50class ParameterSetManagerDecoder;
51
52//! \ingroup TLibDecoder
53//! \{
54
55// ====================================================================================================================
56// Class definition
57// ====================================================================================================================
58
59/// entropy decoder pure class
60class TDecEntropyIf
61{
62public:
63  //  Virtual list for SBAC/CAVLC
64  virtual Void  resetEntropy          ( TComSlice* pcSlice )     = 0;
65  virtual Void  setBitstream          ( TComInputBitstream* p )  = 0;
66
67  virtual Void  parseVPS                  ( TComVPS* pcVPS )                       = 0;
68  virtual Void  parseSPS                  ( TComSPS* pcSPS )                                      = 0;
69  virtual Void  parsePPS                  ( TComPPS* pcPPS )                                      = 0;
70
71  virtual Void parseSliceHeader          ( TComSlice*& rpcSlice, ParameterSetManagerDecoder *parameterSetManager)       = 0;
72
73  virtual Void  parseTerminatingBit       ( UInt& ruilsLast )                                     = 0;
74 
75  virtual Void parseMVPIdx        ( Int& riMVPIdx ) = 0;
76 
77public:
78  virtual Void parseSkipFlag      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth ) = 0;
79  virtual Void parseCUTransquantBypassFlag( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth ) = 0;
80  virtual Void parseSplitFlag     ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth ) = 0;
81  virtual Void parseMergeFlag     ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPUIdx ) = 0;
82  virtual Void parseMergeIndex    ( TComDataCU* pcCU, UInt& ruiMergeIndex ) = 0;
83  virtual Void parsePartSize      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth ) = 0;
84  virtual Void parsePredMode      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth ) = 0;
85 
86  virtual Void parseIntraDirLumaAng( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth ) = 0;
87 
88  virtual Void parseIntraDirChroma( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth ) = 0;
89 
90  virtual Void parseInterDir      ( TComDataCU* pcCU, UInt& ruiInterDir, UInt uiAbsPartIdx ) = 0;
91  virtual Void parseRefFrmIdx     ( TComDataCU* pcCU, Int& riRefFrmIdx, RefPicList eRefList ) = 0;
92  virtual Void parseMvd           ( TComDataCU* pcCU, UInt uiAbsPartAddr, UInt uiPartIdx, UInt uiDepth, RefPicList eRefList ) = 0;
93 
94  virtual Void parseTransformSubdivFlag( UInt& ruiSubdivFlag, UInt uiLog2TransformBlockSize ) = 0;
95  virtual Void parseQtCbf         ( TComDataCU* pcCU, UInt uiAbsPartIdx, TextType eType, UInt uiTrDepth, UInt uiDepth ) = 0;
96  virtual Void parseQtRootCbf     ( UInt uiAbsPartIdx, UInt& uiQtRootCbf ) = 0;
97 
98  virtual Void parseDeltaQP       ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth ) = 0;
99 
100  virtual Void parseIPCMInfo     ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth) = 0;
101
102  virtual Void parseCoeffNxN( TComDataCU* pcCU, TCoeff* pcCoef, UInt uiAbsPartIdx, UInt uiWidth, UInt uiHeight, UInt uiDepth, TextType eTType ) = 0;
103  virtual Void parseTransformSkipFlags ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt width, UInt height, UInt uiDepth, TextType eTType) = 0;
104
105#if INTRA_BL
106  virtual Void parseIntraBLFlag   ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiPartIdx, UInt uiDepth ) = 0;
107#endif
108
109  virtual Void updateContextTables( SliceType eSliceType, Int iQp ) = 0;
110 
111  virtual ~TDecEntropyIf() {}
112};
113
114/// entropy decoder class
115class TDecEntropy
116{
117private:
118  TDecEntropyIf*  m_pcEntropyDecoderIf;
119  TComPrediction* m_pcPrediction;
120  UInt    m_uiBakAbsPartIdx;
121  UInt    m_uiBakChromaOffset;
122  UInt    m_bakAbsPartIdxCU;
123 
124public:
125  Void init (TComPrediction* p) {m_pcPrediction = p;}
126  Void decodePUWise       ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, TComDataCU* pcSubCU );
127  Void decodeInterDirPU   ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPartIdx );
128  Void decodeRefFrmIdxPU  ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPartIdx, RefPicList eRefList );
129  Void decodeMvdPU        ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPartIdx, RefPicList eRefList );
130  Void decodeMVPIdxPU     ( TComDataCU* pcSubCU, UInt uiPartAddr, UInt uiDepth, UInt uiPartIdx, RefPicList eRefList );
131 
132  Void    setEntropyDecoder           ( TDecEntropyIf* p );
133  Void    setBitstream                ( TComInputBitstream* p ) { m_pcEntropyDecoderIf->setBitstream(p);                    }
134  Void    resetEntropy                ( TComSlice* p)           { m_pcEntropyDecoderIf->resetEntropy(p);                    }
135  Void    decodeVPS                   ( TComVPS* pcVPS ) { m_pcEntropyDecoderIf->parseVPS(pcVPS); }
136  Void    decodeSPS                   ( TComSPS* pcSPS     )    { m_pcEntropyDecoderIf->parseSPS(pcSPS);                    }
137  Void    decodePPS                   ( TComPPS* pcPPS )    { m_pcEntropyDecoderIf->parsePPS(pcPPS);                    }
138  Void    decodeSliceHeader           ( TComSlice*& rpcSlice, ParameterSetManagerDecoder *parameterSetManager)  { m_pcEntropyDecoderIf->parseSliceHeader(rpcSlice, parameterSetManager);         }
139
140  Void    decodeTerminatingBit        ( UInt& ruiIsLast )       { m_pcEntropyDecoderIf->parseTerminatingBit(ruiIsLast);     }
141 
142  TDecEntropyIf* getEntropyDecoder() { return m_pcEntropyDecoderIf; }
143 
144public:
145  Void decodeSplitFlag         ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
146  Void decodeSkipFlag          ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
147  Void decodeCUTransquantBypassFlag( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
148  Void decodeMergeFlag         ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPUIdx );
149  Void decodeMergeIndex        ( TComDataCU* pcSubCU, UInt uiPartIdx, UInt uiPartAddr, UInt uiDepth );
150  Void decodePredMode          ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
151  Void decodePartSize          ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
152 
153  Void decodeIPCMInfo          ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
154
155  Void decodePredInfo          ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, TComDataCU* pcSubCU );
156 
157  Void decodeIntraDirModeLuma  ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
158  Void decodeIntraDirModeChroma( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
159 
160  Void decodeQP                ( TComDataCU* pcCU, UInt uiAbsPartIdx );
161 
162  Void updateContextTables    ( SliceType eSliceType, Int iQp ) { m_pcEntropyDecoderIf->updateContextTables( eSliceType, iQp ); }
163 
164#if INTRA_BL
165  Void decodeIntraBLFlag       ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiPartIdx, UInt uiDepth );
166#endif
167 
168private:
169  Void xDecodeTransform        ( TComDataCU* pcCU, UInt offsetLuma, UInt offsetChroma, UInt uiAbsPartIdx, UInt uiDepth, UInt width, UInt height, UInt uiTrIdx, Bool& bCodeDQP );
170
171public:
172  Void decodeCoeff             ( TComDataCU* pcCU                 , UInt uiAbsPartIdx, UInt uiDepth, UInt uiWidth, UInt uiHeight, Bool& bCodeDQP );
173 
174};// END CLASS DEFINITION TDecEntropy
175
176//! \}
177
178#endif // __TDECENTROPY__
179
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