source: SHVCSoftware/branches/SHM-dev/source/Lib/TLibEncoder/TEncSbac.h @ 1550

Last change on this file since 1550 was 1549, checked in by seregin, 9 years ago

port rev 4732, update copyright notice to include 2016
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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) 2010-2016, 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     TEncSbac.h
35    \brief    Context-adaptive entropy encoder class (header)
36*/
37
38#ifndef __TENCSBAC__
39#define __TENCSBAC__
40
41#if _MSC_VER > 1000
42#pragma once
43#endif // _MSC_VER > 1000
44
45#include "TLibCommon/TComBitStream.h"
46#include "TLibCommon/ContextTables.h"
47#include "TLibCommon/ContextModel.h"
48#include "TLibCommon/ContextModel3DBuffer.h"
49#include "TEncEntropy.h"
50#include "TEncBinCoder.h"
51#include "TEncBinCoderCABAC.h"
52#if FAST_BIT_EST
53#include "TEncBinCoderCABACCounter.h"
54#endif
55
56class TEncTop;
57
58//! \ingroup TLibEncoder
59//! \{
60
61// ====================================================================================================================
62// Class definition
63// ====================================================================================================================
64
65/// SBAC encoder class
66class TEncSbac : public TEncEntropyIf
67{
68public:
69  TEncSbac();
70  virtual ~TEncSbac();
71
72  Void  init                   ( TEncBinIf* p )  { m_pcBinIf = p; }
73  Void  uninit                 ()                { m_pcBinIf = 0; }
74
75  //  Virtual list
76  Void  resetEntropy           (const TComSlice *pSlice);
77  SliceType determineCabacInitIdx  (const TComSlice *pSlice);
78  Void  setBitstream           ( TComBitIf* p )  { m_pcBitIf = p; m_pcBinIf->init( p ); }
79
80  Void  load                   ( const TEncSbac* pSrc  );
81  Void  loadIntraDirMode       ( const TEncSbac* pScr, const ChannelType chType  );
82  Void  store                  ( TEncSbac* pDest ) const;
83  Void  loadContexts           ( const TEncSbac* pSrc  );
84  Void  resetBits              ()                { m_pcBinIf->resetBits(); m_pcBitIf->resetBits(); }
85  UInt  getNumberOfWrittenBits ()                { return m_pcBinIf->getNumWrittenBits(); }
86  //--SBAC RD
87
88  Void  codeVPS                ( const TComVPS* pcVPS );
89  Void  codeSPS                ( const TComSPS* pcSPS     );
90#if CGS_3D_ASYMLUT
91  Void  codePPS                ( const TComPPS* pcPPS, TEnc3DAsymLUT * pc3DAsymLUT     );
92#else
93  Void  codePPS                ( const TComPPS* pcPPS     );
94#endif
95  Void  codeSliceHeader        ( TComSlice* pcSlice );
96  Void  codeTilesWPPEntryPoint ( TComSlice* pSlice );
97  Void  codeTerminatingBit     ( UInt uilsLast      );
98  Void  codeSliceFinish        ();
99  Void  codeSaoMaxUvlc       ( UInt code, UInt maxSymbol );
100  Void  codeSaoMerge         ( UInt  uiCode );
101  Void  codeSaoTypeIdx       ( UInt  uiCode);
102  Void  codeSaoUflc          ( UInt uiLength, UInt  uiCode );
103  Void  codeSAOSign          ( UInt  uiCode);  //<! code SAO offset sign
104
105  Void codeSAOOffsetParam(ComponentID compIdx, SAOOffset& ctbParam, Bool sliceEnabled, const Int channelBitDepth);
106  Void codeSAOBlkParam(SAOBlkParam& saoBlkParam, const BitDepths &bitDepths
107                    , Bool* sliceEnabled
108                    , Bool leftMergeAvail
109                    , Bool aboveMergeAvail
110                    , Bool onlyEstMergeInfo = false
111                    );
112
113#if SVC_EXTENSION
114  Void  codeSliceHeaderExtn     ( TComSlice* pSlice, Int shBitsWrittenTillNow );
115#endif 
116
117private:
118  Void  xWriteUnarySymbol    ( UInt uiSymbol, ContextModel* pcSCModel, Int iOffset );
119  Void  xWriteUnaryMaxSymbol ( UInt uiSymbol, ContextModel* pcSCModel, Int iOffset, UInt uiMaxSymbol );
120  Void  xWriteEpExGolomb     ( UInt uiSymbol, UInt uiCount );
121  Void  xWriteCoefRemainExGolomb ( UInt symbol, UInt &rParam, const Bool useLimitedPrefixLength, const Int maxLog2TrDynamicRange );
122
123  Void  xCopyFrom            ( const TEncSbac* pSrc );
124  Void  xCopyContextsFrom    ( const TEncSbac* pSrc );
125
126protected:
127  TComBitIf*    m_pcBitIf;
128  TEncBinIf*    m_pcBinIf;
129
130  //--Adaptive loop filter
131
132public:
133  Void codeCUTransquantBypassFlag( TComDataCU* pcCU, UInt uiAbsPartIdx );
134  Void codeSkipFlag      ( TComDataCU* pcCU, UInt uiAbsPartIdx );
135  Void codeMergeFlag     ( TComDataCU* pcCU, UInt uiAbsPartIdx );
136  Void codeMergeIndex    ( TComDataCU* pcCU, UInt uiAbsPartIdx );
137  Void codeSplitFlag     ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
138  Void codeMVPIdx        ( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList );
139
140  Void codePartSize      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
141  Void codePredMode      ( TComDataCU* pcCU, UInt uiAbsPartIdx );
142  Void codeIPCMInfo      ( TComDataCU* pcCU, UInt uiAbsPartIdx );
143  Void codeTransformSubdivFlag ( UInt uiSymbol, UInt uiCtx );
144  Void codeQtCbf               ( TComTU & rTu, const ComponentID compID, const Bool lowestLevel );
145  Void codeQtRootCbf           ( TComDataCU* pcCU, UInt uiAbsPartIdx );
146  Void codeQtCbfZero           ( TComTU &rTu, const ChannelType chType );
147  Void codeQtRootCbfZero       ( );
148  Void codeIntraDirLumaAng     ( TComDataCU* pcCU, UInt absPartIdx, Bool isMultiple);
149
150  Void codeIntraDirChroma      ( TComDataCU* pcCU, UInt uiAbsPartIdx );
151  Void codeInterDir            ( TComDataCU* pcCU, UInt uiAbsPartIdx );
152  Void codeRefFrmIdx           ( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList );
153  Void codeMvd                 ( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList );
154
155  Void codeCrossComponentPrediction( TComTU &rTu, ComponentID compID );
156
157  Void codeDeltaQP             ( TComDataCU* pcCU, UInt uiAbsPartIdx );
158  Void codeChromaQpAdjustment  ( TComDataCU* cu, UInt absPartIdx );
159
160  Void codeLastSignificantXY ( UInt uiPosX, UInt uiPosY, Int width, Int height, ComponentID component, UInt uiScanIdx );
161  Void codeCoeffNxN            ( TComTU &rTu, TCoeff* pcCoef, const ComponentID compID );
162  Void codeTransformSkipFlags ( TComTU &rTu, ComponentID component );
163
164  // -------------------------------------------------------------------------------------------------------------------
165  // for RD-optimizatioon
166  // -------------------------------------------------------------------------------------------------------------------
167
168  Void estBit               (estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType);
169  Void estCBFBit                     ( estBitsSbacStruct* pcEstBitsSbac );
170  Void estSignificantCoeffGroupMapBit( estBitsSbacStruct* pcEstBitsSbac, ChannelType chType );
171  Void estSignificantMapBit          ( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType );
172  Void estLastSignificantPositionBit ( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType );
173  Void estSignificantCoefficientsBit ( estBitsSbacStruct* pcEstBitsSbac, ChannelType chType );
174
175  Void codeExplicitRdpcmMode            ( TComTU &rTu, const ComponentID compID );
176
177
178  TEncBinIf* getEncBinIf()  { return m_pcBinIf; }
179private:
180  ContextModel         m_contextModels[MAX_NUM_CTX_MOD];
181  Int                  m_numContextModels;
182  ContextModel3DBuffer m_cCUSplitFlagSCModel;
183  ContextModel3DBuffer m_cCUSkipFlagSCModel;
184  ContextModel3DBuffer m_cCUMergeFlagExtSCModel;
185  ContextModel3DBuffer m_cCUMergeIdxExtSCModel;
186  ContextModel3DBuffer m_cCUPartSizeSCModel;
187  ContextModel3DBuffer m_cCUPredModeSCModel;
188  ContextModel3DBuffer m_cCUIntraPredSCModel;
189  ContextModel3DBuffer m_cCUChromaPredSCModel;
190  ContextModel3DBuffer m_cCUDeltaQpSCModel;
191  ContextModel3DBuffer m_cCUInterDirSCModel;
192  ContextModel3DBuffer m_cCURefPicSCModel;
193  ContextModel3DBuffer m_cCUMvdSCModel;
194  ContextModel3DBuffer m_cCUQtCbfSCModel;
195  ContextModel3DBuffer m_cCUTransSubdivFlagSCModel;
196  ContextModel3DBuffer m_cCUQtRootCbfSCModel;
197
198  ContextModel3DBuffer m_cCUSigCoeffGroupSCModel;
199  ContextModel3DBuffer m_cCUSigSCModel;
200  ContextModel3DBuffer m_cCuCtxLastX;
201  ContextModel3DBuffer m_cCuCtxLastY;
202  ContextModel3DBuffer m_cCUOneSCModel;
203  ContextModel3DBuffer m_cCUAbsSCModel;
204
205  ContextModel3DBuffer m_cMVPIdxSCModel;
206
207  ContextModel3DBuffer m_cSaoMergeSCModel;
208  ContextModel3DBuffer m_cSaoTypeIdxSCModel;
209  ContextModel3DBuffer m_cTransformSkipSCModel;
210  ContextModel3DBuffer m_CUTransquantBypassFlagSCModel;
211  ContextModel3DBuffer m_explicitRdpcmFlagSCModel;
212  ContextModel3DBuffer m_explicitRdpcmDirSCModel;
213  ContextModel3DBuffer m_cCrossComponentPredictionSCModel;
214
215  ContextModel3DBuffer m_ChromaQpAdjFlagSCModel;
216  ContextModel3DBuffer m_ChromaQpAdjIdcSCModel;
217
218  UInt m_golombRiceAdaptationStatistics[RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS];
219};
220
221//! \}
222
223#endif // !defined(AFX_TENCSBAC_H__DDA7CDC4_EDE3_4015_9D32_2156249C82AA__INCLUDED_)
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