source: SHVCSoftware/trunk/source/Lib/TLibEncoder/TEncSbac.h @ 2

Last change on this file since 2 was 2, checked in by seregin, 12 years ago

Initial import by Vadim Seregin <vseregin@…>
File size: 11.6 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) 2010-2012, 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           ();
77  Void  determineCabacInitIdx  ();
78  Void  setBitstream           ( TComBitIf* p )  { m_pcBitIf = p; m_pcBinIf->init( p ); }
79  Void  setSlice               ( TComSlice* p )  { m_pcSlice = p;                       }
80  // SBAC RD
81  Void  resetCoeffCost         ()                { m_uiCoeffCost = 0;  }
82  UInt  getCoeffCost           ()                { return  m_uiCoeffCost;  }
83 
84  Void  load                   ( TEncSbac* pScr  );
85  Void  loadIntraDirModeLuma   ( TEncSbac* pScr  );
86  Void  store                  ( TEncSbac* pDest );
87  Void  loadContexts           ( TEncSbac* pScr  );
88  Void  resetBits              ()                { m_pcBinIf->resetBits(); m_pcBitIf->resetBits(); }
89  UInt  getNumberOfWrittenBits ()                { return m_pcBinIf->getNumWrittenBits(); }
90  //--SBAC RD
91
92  Void  codeVPS                 ( TComVPS* pcVPS );
93  Void  codeSPS                 ( TComSPS* pcSPS     );
94  Void  codePPS                 ( TComPPS* pcPPS     );
95  Void  codeSliceHeader         ( TComSlice* pcSlice );
96  Void  codeTilesWPPEntryPoint( TComSlice* pSlice );
97  Void  codeTerminatingBit      ( UInt uilsLast      );
98  Void  codeSliceFinish         ();
99  Void  codeFlush               ();
100  Void  encodeStart             ();
101#if !REMOVE_ALF
102  Void codeAlfParam(ALFParam* alfParam){printf("Not supported\n"); assert(0); exit(1);}
103  Void codeAlfCtrlFlag( Int compIdx, UInt code );
104#endif
105  Void  codeApsExtensionFlag () { assert (0); return; };
106  Void  codeSaoMaxUvlc    ( UInt code, UInt maxSymbol );
107#if SAO_MERGE_ONE_CTX
108  Void  codeSaoMerge  ( UInt  uiCode );
109#else
110  Void  codeSaoMergeLeft  ( UInt  uiCode, UInt uiCompIdx );
111  Void  codeSaoMergeUp    ( UInt  uiCode);
112#endif
113  Void  codeSaoTypeIdx    ( UInt  uiCode);
114#if SAO_TYPE_CODING
115  Void  codeSaoUflc       ( UInt uiLength, UInt  uiCode );
116#else
117  Void  codeSaoUflc       ( UInt  uiCode);
118#endif
119  Void  codeSAOSign       ( UInt  uiCode);  //<! code SAO offset sign
120  Void  codeScalingList      ( TComScalingList* scalingList     ){ assert (0);  return;};
121
122private:
123  Void  xWriteUnarySymbol    ( UInt uiSymbol, ContextModel* pcSCModel, Int iOffset );
124  Void  xWriteUnaryMaxSymbol ( UInt uiSymbol, ContextModel* pcSCModel, Int iOffset, UInt uiMaxSymbol );
125  Void  xWriteEpExGolomb     ( UInt uiSymbol, UInt uiCount );
126  Void  xWriteCoefRemainExGolomb ( UInt symbol, UInt &rParam );
127  Void  xWriteTerminatingBit ( UInt uiBit );
128 
129  Void  xCopyFrom            ( TEncSbac* pSrc );
130  Void  xCopyContextsFrom    ( TEncSbac* pSrc ); 
131 
132#if !REMOVE_APS
133  Void codeAPSInitInfo(TComAPS* pcAPS) {printf("Not supported in codeAPSInitInfo()\n"); assert(0); exit(1);}
134#endif
135  Void codeFinish     (Bool bEnd)      { m_pcBinIf->encodeFlush(bEnd); }  //<! flush bits when CABAC termination
136  Void codeDFFlag( UInt uiCode, const Char *pSymbolName )       {printf("Not supported in codeDFFlag()\n"); assert(0); exit(1);};
137  Void codeDFSvlc( Int iCode, const Char *pSymbolName )         {printf("Not supported in codeDFSvlc()\n"); assert(0); exit(1);};
138
139protected:
140  TComBitIf*    m_pcBitIf;
141  TComSlice*    m_pcSlice;
142  TEncBinIf*    m_pcBinIf;
143  //SBAC RD
144  UInt          m_uiCoeffCost;
145
146#if !REMOVE_FGS
147  Int           m_iSliceGranularity; //!< slice granularity
148#endif
149  //--Adaptive loop filter
150 
151public:
152#if !REMOVE_FGS
153  /// set slice granularity
154  Void setSliceGranularity(Int iSliceGranularity)  {m_iSliceGranularity = iSliceGranularity;}
155
156  /// get slice granularity
157  Int  getSliceGranularity()                       {return m_iSliceGranularity;             }
158#endif
159  Void codeCUTransquantBypassFlag( TComDataCU* pcCU, UInt uiAbsPartIdx );
160  Void codeSkipFlag      ( TComDataCU* pcCU, UInt uiAbsPartIdx );
161  Void codeMergeFlag     ( TComDataCU* pcCU, UInt uiAbsPartIdx );
162  Void codeMergeIndex    ( TComDataCU* pcCU, UInt uiAbsPartIdx );
163  Void codeSplitFlag     ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
164  Void codeMVPIdx        ( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList );
165 
166#if INTRA_BL
167  Void codeIntraBLFlag      ( TComDataCU* pcCU, UInt uiAbsPartIdx );
168#endif
169  Void codePartSize      ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth );
170  Void codePredMode      ( TComDataCU* pcCU, UInt uiAbsPartIdx );
171  Void codeIPCMInfo      ( TComDataCU* pcCU, UInt uiAbsPartIdx, Int numIPCM, Bool firstIPCMFlag);
172  Void codeTransformSubdivFlag ( UInt uiSymbol, UInt uiCtx );
173  Void codeQtCbf               ( TComDataCU* pcCU, UInt uiAbsPartIdx, TextType eType, UInt uiTrDepth );
174  Void codeQtRootCbf           ( TComDataCU* pcCU, UInt uiAbsPartIdx );
175#if TU_ZERO_CBF_RDO
176  Void codeQtCbfZero           ( TComDataCU* pcCU, UInt uiAbsPartIdx, TextType eType, UInt uiTrDepth );
177  Void codeQtRootCbfZero       ( TComDataCU* pcCU, UInt uiAbsPartIdx );
178#endif
179  Void codeIntraDirLumaAng     ( TComDataCU* pcCU, UInt absPartIdx, Bool isMultiple);
180 
181  Void codeIntraDirChroma      ( TComDataCU* pcCU, UInt uiAbsPartIdx );
182  Void codeInterDir            ( TComDataCU* pcCU, UInt uiAbsPartIdx );
183  Void codeRefFrmIdx           ( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList );
184  Void codeMvd                 ( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList );
185 
186  Void codeDeltaQP             ( TComDataCU* pcCU, UInt uiAbsPartIdx );
187 
188  Void codeLastSignificantXY ( UInt uiPosX, UInt uiPosY, Int width, Int height, TextType eTType, UInt uiScanIdx );
189  Void codeCoeffNxN            ( TComDataCU* pcCU, TCoeff* pcCoef, UInt uiAbsPartIdx, UInt uiWidth, UInt uiHeight, UInt uiDepth, TextType eTType );
190  void codeTransformSkipFlags ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt width, UInt height, UInt uiDepth, TextType eTType );
191
192  // -------------------------------------------------------------------------------------------------------------------
193  // for RD-optimizatioon
194  // -------------------------------------------------------------------------------------------------------------------
195 
196  Void estBit               (estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, TextType eTType);
197  Void estCBFBit                     ( estBitsSbacStruct* pcEstBitsSbac, UInt uiCTXIdx, TextType eTType );
198  Void estSignificantCoeffGroupMapBit( estBitsSbacStruct* pcEstBitsSbac, UInt uiCTXIdx, TextType eTType );
199  Void estSignificantMapBit          ( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, TextType eTType );
200  Void estSignificantCoefficientsBit ( estBitsSbacStruct* pcEstBitsSbac, UInt uiCTXIdx, TextType eTType );
201 
202  Void updateContextTables           ( SliceType eSliceType, Int iQp, Bool bExecuteFinish=true  );
203  Void updateContextTables           ( SliceType eSliceType, Int iQp  ) { this->updateContextTables( eSliceType, iQp, true); };
204 
205  TEncBinIf* getEncBinIf()  { return m_pcBinIf; }
206private:
207  UInt                 m_uiLastQp;
208 
209  ContextModel         m_contextModels[MAX_NUM_CTX_MOD];
210  Int                  m_numContextModels;
211  ContextModel3DBuffer m_cCUSplitFlagSCModel;
212  ContextModel3DBuffer m_cCUSkipFlagSCModel;
213  ContextModel3DBuffer m_cCUMergeFlagExtSCModel;
214  ContextModel3DBuffer m_cCUMergeIdxExtSCModel;
215  ContextModel3DBuffer m_cCUPartSizeSCModel;
216  ContextModel3DBuffer m_cCUPredModeSCModel;
217  ContextModel3DBuffer m_cCUAlfCtrlFlagSCModel;
218  ContextModel3DBuffer m_cCUIntraPredSCModel;
219  ContextModel3DBuffer m_cCUChromaPredSCModel;
220  ContextModel3DBuffer m_cCUDeltaQpSCModel;
221  ContextModel3DBuffer m_cCUInterDirSCModel;
222  ContextModel3DBuffer m_cCURefPicSCModel;
223  ContextModel3DBuffer m_cCUMvdSCModel;
224  ContextModel3DBuffer m_cCUQtCbfSCModel;
225  ContextModel3DBuffer m_cCUTransSubdivFlagSCModel;
226  ContextModel3DBuffer m_cCUQtRootCbfSCModel;
227 
228  ContextModel3DBuffer m_cCUSigCoeffGroupSCModel;
229  ContextModel3DBuffer m_cCUSigSCModel;
230  ContextModel3DBuffer m_cCuCtxLastX;
231  ContextModel3DBuffer m_cCuCtxLastY;
232  ContextModel3DBuffer m_cCUOneSCModel;
233  ContextModel3DBuffer m_cCUAbsSCModel;
234 
235  ContextModel3DBuffer m_cMVPIdxSCModel;
236 
237  ContextModel3DBuffer m_cALFFlagSCModel;
238  ContextModel3DBuffer m_cALFUvlcSCModel;
239  ContextModel3DBuffer m_cALFSvlcSCModel;
240  ContextModel3DBuffer m_cCUAMPSCModel;
241#if !SAO_ABS_BY_PASS
242  ContextModel3DBuffer m_cSaoUvlcSCModel;
243#endif
244#if SAO_MERGE_ONE_CTX
245  ContextModel3DBuffer m_cSaoMergeSCModel;
246#else
247  ContextModel3DBuffer m_cSaoMergeLeftSCModel;
248  ContextModel3DBuffer m_cSaoMergeUpSCModel;
249#endif
250#if INTRA_BL
251  ContextModel3DBuffer m_cIntraBLPredFlagSCModel;
252#endif
253  ContextModel3DBuffer m_cSaoTypeIdxSCModel;
254  ContextModel3DBuffer m_cTransformSkipSCModel;
255  ContextModel3DBuffer m_CUTransquantBypassFlagSCModel;
256};
257
258//! \}
259
260#endif // !defined(AFX_TENCSBAC_H__DDA7CDC4_EDE3_4015_9D32_2156249C82AA__INCLUDED_)
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