source: SHVCSoftware/branches/SHM-dev/source/Lib/TLibDecoder/TDecSbac.h @ 1497

Last change on this file since 1497 was 1491, checked in by seregin, 9 years ago

remove VPS dependency in SPS parsing introduced in SCALABLE_REXT
  • Property svn:eol-style set to native
File size: 8.9 KB
Line 
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) 2010-2015, 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
60class SEImessages;
61
62/// SBAC decoder class
63class TDecSbac : public TDecEntropyIf
64{
65public:
66  TDecSbac();
67  virtual ~TDecSbac();
68
69  Void  init                      ( TDecBinIf* p )    { m_pcTDecBinIf = p; }
70  Void  uninit                    (              )    { m_pcTDecBinIf = 0; }
71
72  Void load                       ( const TDecSbac* pSrc );
73  Void loadContexts               ( const TDecSbac* pSrc );
74  Void xCopyFrom                  ( const TDecSbac* pSrc );
75  Void xCopyContextsFrom          ( const TDecSbac* pSrc );
76
77  Void  resetEntropy (TComSlice* pSlice );
78  Void  setBitstream              ( TComInputBitstream* p  ) { m_pcBitstream = p; m_pcTDecBinIf->init( p ); }
79  Void  parseVPS                  ( TComVPS* /*pcVPS*/ ) {}
80  Void  parseSPS                  ( TComSPS* /*pcSPS*/ ) {}
81#if CGS_3D_ASYMLUT
82  Void  parsePPS                  ( TComPPS* /*pcPPS*/, TCom3DAsymLUT * /*pc3DAsymLUT*/, Int /*nLayerID*/ ) {}
83#else
84  Void  parsePPS                  ( TComPPS* /*pcPPS*/ ) {}
85#endif
86
87  Void  parseSliceHeader          ( TComSlice* /*pcSlice*/, ParameterSetManager* /*parameterSetManager*/, const Int /*prevTid0POC*/) {}
88  Void  parseTerminatingBit       ( UInt& ruiBit );
89  Void  parseRemainingBytes       ( Bool noTrailingBytesExpected);
90  Void  parseMVPIdx               ( Int& riMVPIdx          );
91  Void  parseSaoMaxUvlc           ( UInt& val, UInt maxSymbol );
92  Void  parseSaoMerge             ( UInt&  ruiVal   );
93  Void  parseSaoTypeIdx           ( UInt&  ruiVal  );
94  Void  parseSaoUflc              ( UInt uiLength, UInt& ruiVal     );
95  Void parseSAOBlkParam           (SAOBlkParam& saoBlkParam, Bool* sliceEnabled, Bool leftMergeAvail, Bool aboveMergeAvail, const BitDepths &bitDepths);
96  Void parseSaoSign               (UInt& val);
97
98private:
99#if RExt__DECODER_DEBUG_BIT_STATISTICS
100  Void  xReadUnarySymbol    ( UInt& ruiSymbol, ContextModel* pcSCModel, Int iOffset, const class TComCodingStatisticsClassType &whichStat );
101  Void  xReadUnaryMaxSymbol ( UInt& ruiSymbol, ContextModel* pcSCModel, Int iOffset, UInt uiMaxSymbol, const class TComCodingStatisticsClassType &whichStat );
102  Void  xReadEpExGolomb     ( UInt& ruiSymbol, UInt uiCount, const class TComCodingStatisticsClassType &whichStat );
103  Void  xReadCoefRemainExGolomb ( UInt &rSymbol, UInt &rParam, const Bool useLimitedPrefixLength, const Int maxLog2TrDynamicRange, const class TComCodingStatisticsClassType &whichStat );
104#else
105  Void  xReadUnarySymbol    ( UInt& ruiSymbol, ContextModel* pcSCModel, Int iOffset );
106  Void  xReadUnaryMaxSymbol ( UInt& ruiSymbol, ContextModel* pcSCModel, Int iOffset, UInt uiMaxSymbol );
107  Void  xReadEpExGolomb     ( UInt& ruiSymbol, UInt uiCount );
108  Void  xReadCoefRemainExGolomb ( UInt &rSymbol, UInt &rParam, const Bool useLimitedPrefixLength, const Int maxLog2TrDynamicRange );
109#endif
110private:
111  TComInputBitstream* m_pcBitstream;
112  TDecBinIf*        m_pcTDecBinIf;
113
114public:
115
116  Void parseSkipFlag      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
117  Void parseCUTransquantBypassFlag( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
118  Void parseSplitFlag     ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
119  Void parseMergeFlag     ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth, UInt uiPUIdx );
120  Void parseMergeIndex    ( TComDataCU* pcCU, UInt& ruiMergeIndex );
121  Void parsePartSize      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
122  Void parsePredMode      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
123
124  Void parseIntraDirLumaAng( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
125  Void parseIntraDirChroma( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
126
127  Void parseInterDir      ( TComDataCU* pcCU, UInt& ruiInterDir, UInt uiAbsPartIdx );
128  Void parseRefFrmIdx     ( TComDataCU* pcCU, Int& riRefFrmIdx, RefPicList eRefList );
129  Void parseMvd           ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiPartIdx, UInt uiDepth, RefPicList eRefList );
130
131  Void parseCrossComponentPrediction ( class TComTU &rTu, ComponentID compID );
132
133  Void parseTransformSubdivFlag( UInt& ruiSubdivFlag, UInt uiLog2TransformBlockSize );
134  Void parseQtCbf         ( TComTU &rTu, const ComponentID compID, const Bool lowestLevel );
135  Void parseQtRootCbf     ( UInt uiAbsPartIdx, UInt& uiQtRootCbf );
136
137  Void parseDeltaQP       ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
138  Void parseChromaQpAdjustment( TComDataCU* cu, UInt absPartIdx, UInt depth );
139
140  Void parseIPCMInfo      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth);
141
142  Void parseLastSignificantXY( UInt& uiPosLastX, UInt& uiPosLastY, Int width, Int height, ComponentID component, UInt uiScanIdx );
143  Void parseCoeffNxN      ( class TComTU &rTu, ComponentID compID  );
144  Void parseTransformSkipFlags ( class TComTU &rTu, ComponentID component );
145
146  Void  parseScalingList ( TComScalingList* /*scalingList*/ ) {}
147
148  Void  parseExplicitRdpcmMode( TComTU &rTu, ComponentID compID );
149
150private:
151  ContextModel         m_contextModels[MAX_NUM_CTX_MOD];
152  Int                  m_numContextModels;
153  ContextModel3DBuffer m_cCUSplitFlagSCModel;
154  ContextModel3DBuffer m_cCUSkipFlagSCModel;
155  ContextModel3DBuffer m_cCUMergeFlagExtSCModel;
156  ContextModel3DBuffer m_cCUMergeIdxExtSCModel;
157  ContextModel3DBuffer m_cCUPartSizeSCModel;
158  ContextModel3DBuffer m_cCUPredModeSCModel;
159  ContextModel3DBuffer m_cCUIntraPredSCModel;
160  ContextModel3DBuffer m_cCUChromaPredSCModel;
161  ContextModel3DBuffer m_cCUDeltaQpSCModel;
162  ContextModel3DBuffer m_cCUInterDirSCModel;
163  ContextModel3DBuffer m_cCURefPicSCModel;
164  ContextModel3DBuffer m_cCUMvdSCModel;
165  ContextModel3DBuffer m_cCUQtCbfSCModel;
166  ContextModel3DBuffer m_cCUTransSubdivFlagSCModel;
167  ContextModel3DBuffer m_cCUQtRootCbfSCModel;
168
169  ContextModel3DBuffer m_cCUSigCoeffGroupSCModel;
170  ContextModel3DBuffer m_cCUSigSCModel;
171  ContextModel3DBuffer m_cCuCtxLastX;
172  ContextModel3DBuffer m_cCuCtxLastY;
173  ContextModel3DBuffer m_cCUOneSCModel;
174  ContextModel3DBuffer m_cCUAbsSCModel;
175
176  ContextModel3DBuffer m_cMVPIdxSCModel;
177
178  ContextModel3DBuffer m_cSaoMergeSCModel;
179  ContextModel3DBuffer m_cSaoTypeIdxSCModel;
180  ContextModel3DBuffer m_cTransformSkipSCModel;
181  ContextModel3DBuffer m_CUTransquantBypassFlagSCModel;
182  ContextModel3DBuffer m_explicitRdpcmFlagSCModel;
183  ContextModel3DBuffer m_explicitRdpcmDirSCModel;
184  ContextModel3DBuffer m_cCrossComponentPredictionSCModel;
185
186  ContextModel3DBuffer m_ChromaQpAdjFlagSCModel;
187  ContextModel3DBuffer m_ChromaQpAdjIdcSCModel;
188
189  UInt m_golombRiceAdaptationStatistics[RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS];
190};
191
192//! \}
193
194#endif // !defined(AFX_TDECSBAC_H__CFCAAA19_8110_47F4_9A16_810C4B5499D5__INCLUDED_)
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