source: 3DVCSoftware/trunk/source/Lib/TLibDecoder/TDecBinCoderCABAC.h

Last change on this file was 1413, checked in by tech, 6 years ago

Merged HTM-16.2-dev@1412

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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) 2010-2017, 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 *
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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     TDecBinCoderCABAC.h
35    \brief    binary entropy decoder of CABAC
36*/
37
38#ifndef __TDECBINCODERCABAC__
39#define __TDECBINCODERCABAC__
40
41#include "TLibCommon/TComCABACTables.h"
42#include "TDecBinCoder.h"
43
44//! \ingroup TLibDecoder
45//! \{
46
47class TDecBinCABAC : public TDecBinIf
48{
49public:
50  TDecBinCABAC ();
51  virtual ~TDecBinCABAC();
52
53  Void  init              ( TComInputBitstream* pcTComBitstream );
54  Void  uninit            ();
55
56  Void  start             ();
57  Void  finish            ();
58
59#if RExt__DECODER_DEBUG_BIT_STATISTICS
60  Void  decodeBin          ( UInt& ruiBin, ContextModel& rcCtxModel, const class TComCodingStatisticsClassType &whichStat );
61  Void  decodeBinEP        ( UInt& ruiBin                          , const class TComCodingStatisticsClassType &whichStat );
62  Void  decodeBinsEP       ( UInt& ruiBin, Int numBins             , const class TComCodingStatisticsClassType &whichStat );
63  Void  decodeAlignedBinsEP( UInt& ruiBins, Int numBins            , const class TComCodingStatisticsClassType &whichStat );
64#else
65  Void  decodeBin         ( UInt& ruiBin, ContextModel& rcCtxModel );
66  Void  decodeBinEP       ( UInt& ruiBin                           );
67  Void  decodeBinsEP      ( UInt& ruiBin, Int numBins              );
68  Void  decodeAlignedBinsEP( UInt& ruiBins, Int numBins             );
69#endif
70
71  Void  align             ();
72
73  Void  decodeBinTrm      ( UInt& ruiBin                           );
74
75  Void  xReadPCMCode      ( UInt uiLength, UInt& ruiCode );
76
77  Void  copyState         ( const TDecBinIf* pcTDecBinIf );
78  TDecBinCABAC* getTDecBinCABAC()             { return this; }
79  const TDecBinCABAC* getTDecBinCABAC() const { return this; }
80
81private:
82  TComInputBitstream* m_pcTComBitstream;
83  UInt                m_uiRange;
84  UInt                m_uiValue;
85  Int                 m_bitsNeeded;
86};
87
88//! \}
89
90#endif
91
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