source: SHVCSoftware/trunk/source/Lib/TLibDecoder/TDecSbac.h @ 238

Last change on this file since 238 was 191, checked in by seregin, 12 years ago

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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
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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     TDecSbac.h
35    \brief    SBAC decoder class (header)
36*/
37
38#ifndef __TDECSBAC__
39#define __TDECSBAC__
40
41
42#if _MSC_VER > 1000
43#pragma once
44#endif // _MSC_VER > 1000
45
46
47#include "TDecEntropy.h"
48#include "TDecBinCoder.h"
49#include "TLibCommon/ContextTables.h"
50#include "TLibCommon/ContextModel.h"
51#include "TLibCommon/ContextModel3DBuffer.h"
52
53//! \ingroup TLibDecoder
54//! \{
55
56// ====================================================================================================================
57// Class definition
58// ====================================================================================================================
59
60/// SBAC decoder class
61class TDecSbac : public TDecEntropyIf
62{
63public:
64  TDecSbac();
65  virtual ~TDecSbac();
66 
67  Void  init                      ( TDecBinIf* p )    { m_pcTDecBinIf = p; }
68  Void  uninit                    (              )    { m_pcTDecBinIf = 0; }
69 
70  Void load                          ( TDecSbac* pScr );
71  Void loadContexts                  ( TDecSbac* pScr );
72  Void xCopyFrom           ( TDecSbac* pSrc );
73  Void xCopyContextsFrom       ( TDecSbac* pSrc );
74
75  Void  resetEntropy (TComSlice* pSlice );
76  Void  setBitstream              ( TComInputBitstream* p  ) { m_pcBitstream = p; m_pcTDecBinIf->init( p ); }
77  Void  parseVPS                  ( TComVPS* /*pcVPS*/ ) {}
78  Void  parseSPS                  ( TComSPS* /*pcSPS*/ ) {}
79  Void  parsePPS                  ( TComPPS* /*pcPPS*/ ) {}
80
81  Void  parseSliceHeader          ( TComSlice*& /*rpcSlice*/, ParameterSetManagerDecoder* /*parameterSetManager*/) {}
82  Void  parseTerminatingBit       ( UInt& ruiBit );
83  Void  parseMVPIdx               ( Int& riMVPIdx          );
84  Void  parseSaoMaxUvlc           ( UInt& val, UInt maxSymbol );
85  Void  parseSaoMerge         ( UInt&  ruiVal   );
86  Void  parseSaoTypeIdx           ( UInt&  ruiVal  );
87  Void  parseSaoUflc              ( UInt uiLength, UInt& ruiVal     );
88  Void  parseSaoOneLcuInterleaving(Int rx, Int ry, SAOParam* pSaoParam, TComDataCU* pcCU, Int iCUAddrInSlice, Int iCUAddrUpInSlice, Int allowMergeLeft, Int allowMergeUp);
89  Void  parseSaoOffset            (SaoLcuParam* psSaoLcuParam, UInt compIdx);
90private:
91  Void  xReadUnarySymbol    ( UInt& ruiSymbol, ContextModel* pcSCModel, Int iOffset );
92  Void  xReadUnaryMaxSymbol ( UInt& ruiSymbol, ContextModel* pcSCModel, Int iOffset, UInt uiMaxSymbol );
93  Void  xReadEpExGolomb     ( UInt& ruiSymbol, UInt uiCount );
94  Void  xReadCoefRemainExGolomb ( UInt &rSymbol, UInt &rParam );
95private:
96  TComInputBitstream* m_pcBitstream;
97  TDecBinIf*        m_pcTDecBinIf;
98 
99public:
100 
101  Void parseSkipFlag      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
102  Void parseCUTransquantBypassFlag( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
103  Void parseSplitFlag     ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
104  Void parseMergeFlag     ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPUIdx );
105  Void parseMergeIndex    ( TComDataCU* pcCU, UInt& ruiMergeIndex );
106  Void parsePartSize      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
107  Void parsePredMode      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
108 
109  Void parseIntraDirLumaAng( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
110 
111  Void parseIntraDirChroma( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
112 
113  Void parseInterDir      ( TComDataCU* pcCU, UInt& ruiInterDir, UInt uiAbsPartIdx );
114  Void parseRefFrmIdx     ( TComDataCU* pcCU, Int& riRefFrmIdx, RefPicList eRefList );
115  Void parseMvd           ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiPartIdx, UInt uiDepth, RefPicList eRefList );
116 
117  Void parseTransformSubdivFlag( UInt& ruiSubdivFlag, UInt uiLog2TransformBlockSize );
118  Void parseQtCbf         ( TComDataCU* pcCU, UInt uiAbsPartIdx, TextType eType, UInt uiTrDepth, UInt uiDepth );
119  Void parseQtRootCbf     ( UInt uiAbsPartIdx, UInt& uiQtRootCbf );
120 
121  Void parseDeltaQP       ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
122 
123  Void parseIPCMInfo      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth);
124
125  Void parseLastSignificantXY( UInt& uiPosLastX, UInt& uiPosLastY, Int width, Int height, TextType eTType, UInt uiScanIdx );
126  Void parseCoeffNxN      ( TComDataCU* pcCU, TCoeff* pcCoef, UInt uiAbsPartIdx, UInt uiWidth, UInt uiHeight, UInt uiDepth, TextType eTType );
127  Void parseTransformSkipFlags ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt width, UInt height, UInt uiDepth, TextType eTType);
128
129  Void updateContextTables( SliceType eSliceType, Int iQp );
130
131  Void  parseScalingList ( TComScalingList* /*scalingList*/ ) {}
132
133#if INTRA_BL
134  Void parseIntraBLFlag    ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiPartIdx, UInt uiDepth );
135#endif
136private:
137  UInt m_uiLastDQpNonZero;
138  UInt m_uiLastQp;
139 
140  ContextModel         m_contextModels[MAX_NUM_CTX_MOD];
141  Int                  m_numContextModels;
142  ContextModel3DBuffer m_cCUSplitFlagSCModel;
143  ContextModel3DBuffer m_cCUSkipFlagSCModel;
144  ContextModel3DBuffer m_cCUMergeFlagExtSCModel;
145  ContextModel3DBuffer m_cCUMergeIdxExtSCModel;
146  ContextModel3DBuffer m_cCUPartSizeSCModel;
147  ContextModel3DBuffer m_cCUPredModeSCModel;
148  ContextModel3DBuffer m_cCUIntraPredSCModel;
149  ContextModel3DBuffer m_cCUChromaPredSCModel;
150  ContextModel3DBuffer m_cCUDeltaQpSCModel;
151  ContextModel3DBuffer m_cCUInterDirSCModel;
152  ContextModel3DBuffer m_cCURefPicSCModel;
153  ContextModel3DBuffer m_cCUMvdSCModel;
154  ContextModel3DBuffer m_cCUQtCbfSCModel;
155  ContextModel3DBuffer m_cCUTransSubdivFlagSCModel;
156  ContextModel3DBuffer m_cCUQtRootCbfSCModel;
157 
158  ContextModel3DBuffer m_cCUSigCoeffGroupSCModel;
159  ContextModel3DBuffer m_cCUSigSCModel;
160  ContextModel3DBuffer m_cCuCtxLastX;
161  ContextModel3DBuffer m_cCuCtxLastY;
162  ContextModel3DBuffer m_cCUOneSCModel;
163  ContextModel3DBuffer m_cCUAbsSCModel;
164 
165  ContextModel3DBuffer m_cMVPIdxSCModel;
166 
167  ContextModel3DBuffer m_cCUAMPSCModel;
168  ContextModel3DBuffer m_cSaoMergeSCModel;
169  ContextModel3DBuffer m_cSaoTypeIdxSCModel;
170  ContextModel3DBuffer m_cTransformSkipSCModel;
171  ContextModel3DBuffer m_CUTransquantBypassFlagSCModel;
172#if INTRA_BL
173  ContextModel3DBuffer m_cIntraBLPredFlagSCModel;
174#endif
175};
176
177//! \}
178
179#endif // !defined(AFX_TDECSBAC_H__CFCAAA19_8110_47F4_9A16_810C4B5499D5__INCLUDED_)
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