source: 3DVCSoftware/trunk/source/Lib/TLibEncoder/TEncBinCoderCABACCounter.cpp

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

Merged HTM-16.2-dev@1412

File size: 4.7 KB
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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 *
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     TEncBinCoderCABAC.cpp
35    \brief    binary entropy encoder of CABAC
36*/
37
38#include "TEncBinCoderCABACCounter.h"
39#include "TLibCommon/TComRom.h"
40#include "TLibCommon/Debug.h"
41
42
43#if FAST_BIT_EST
44
45//! \ingroup TLibEncoder
46//! \{
47
48
49TEncBinCABACCounter::TEncBinCABACCounter()
50{
51}
52
53TEncBinCABACCounter::~TEncBinCABACCounter()
54{
55}
56
57Void TEncBinCABACCounter::finish()
58{
59  m_pcTComBitIf->write(0, UInt(m_fracBits >> 15) );
60  m_fracBits &= 32767;
61#if NH_MV
62  D_PRINT_INDENT( g_traceEncFracBits, "Finish " + n2s(m_fracBits) );   
63#endif
64}
65
66UInt TEncBinCABACCounter::getNumWrittenBits()
67{
68  return m_pcTComBitIf->getNumberOfWrittenBits() + UInt( m_fracBits >> 15 );
69}
70
71/**
72 * \brief Encode bin
73 *
74 * \param binValue   bin value
75 * \param rcCtxModel context model
76 */
77Void TEncBinCABACCounter::encodeBin( UInt binValue, ContextModel &rcCtxModel )
78{
79#if DEBUG_ENCODER_SEARCH_BINS
80  const UInt64 startingFracBits = m_fracBits;
81#endif
82
83  m_uiBinsCoded += m_binCountIncrement;
84  m_fracBits += rcCtxModel.getEntropyBits( binValue );
85#if NH_MV
86  D_PRINT_INDENT( g_traceEncFracBits, "EncodeBin " + n2s(m_fracBits) );   
87#endif
88
89  rcCtxModel.update( binValue );
90
91#if DEBUG_ENCODER_SEARCH_BINS
92  if ((g_debugCounter + debugEncoderSearchBinWindow) >= debugEncoderSearchBinTargetLine)
93  {
94    std::cout << g_debugCounter << ": coding bin value " << binValue << ", fracBits = [" << startingFracBits << "->" << m_fracBits << "]\n";
95  }
96
97  if (g_debugCounter >= debugEncoderSearchBinTargetLine)
98  {
99    UChar breakPointThis;
100    breakPointThis = 7;
101  }
102  if (g_debugCounter >= (debugEncoderSearchBinTargetLine + debugEncoderSearchBinWindow))
103  {
104    exit(0);
105  }
106  g_debugCounter++;
107#endif
108}
109
110/**
111 * \brief Encode equiprobable bin
112 *
113 * \param binValue bin value
114 */
115Void TEncBinCABACCounter::encodeBinEP( UInt /*binValue*/ )
116{
117  m_uiBinsCoded += m_binCountIncrement;
118  m_fracBits += 32768;
119#if NH_MV
120  D_PRINT_INDENT( g_traceEncFracBits , "EncodeBinEP " + n2s(m_fracBits) );
121#endif
122}
123
124/**
125 * \brief Encode equiprobable bins
126 *
127 * \param binValues bin values
128 * \param numBins number of bins
129 */
130Void TEncBinCABACCounter::encodeBinsEP( UInt /*binValues*/, Int numBins )
131{
132  m_uiBinsCoded += numBins & -m_binCountIncrement;
133  m_fracBits += 32768 * numBins;
134#if NH_MV
135  D_PRINT_INDENT( g_traceEncFracBits , "EncodeBinsEP " + n2s(m_fracBits) );   
136#endif
137}
138
139/**
140 * \brief Encode terminating bin
141 *
142 * \param binValue bin value
143 */
144Void TEncBinCABACCounter::encodeBinTrm( UInt binValue )
145{
146  m_uiBinsCoded += m_binCountIncrement;
147  m_fracBits += ContextModel::getEntropyBitsTrm( binValue );
148#if NH_MV
149  D_PRINT_INDENT( g_traceEncFracBits , "EncodeBinTrm " + n2s(m_fracBits) );   
150#endif
151}
152
153Void TEncBinCABACCounter::align()
154{
155  m_fracBits = (m_fracBits + 32767) & (~32767);
156#if NH_MV
157  D_PRINT_INDENT( g_traceEncFracBits, "Align " + n2s(m_fracBits) );   
158#endif
159}
160
161//! \}
162#endif
163
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