139 lines
4 KiB
C++
139 lines
4 KiB
C++
/* The copyright in this software is being made available under the BSD
|
|
* License, included below. This software may be subject to other third party
|
|
* and contributor rights, including patent rights, and no such rights are
|
|
* granted under this license.
|
|
*
|
|
* Copyright (c) 2010-2014, ITU/ISO/IEC
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
|
|
* be used to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
* THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/** \file TEncBinCoderCABAC.cpp
|
|
\brief binary entropy encoder of CABAC
|
|
*/
|
|
|
|
#include "TEncBinCoderCABACCounter.h"
|
|
#include "TLibCommon/TComRom.h"
|
|
#include "TLibCommon/Debug.h"
|
|
|
|
|
|
#if FAST_BIT_EST
|
|
|
|
//! \ingroup TLibEncoder
|
|
//! \{
|
|
|
|
|
|
TEncBinCABACCounter::TEncBinCABACCounter()
|
|
{
|
|
}
|
|
|
|
TEncBinCABACCounter::~TEncBinCABACCounter()
|
|
{
|
|
}
|
|
|
|
Void TEncBinCABACCounter::finish()
|
|
{
|
|
m_pcTComBitIf->write(0, UInt(m_fracBits >> 15) );
|
|
m_fracBits &= 32767;
|
|
}
|
|
|
|
UInt TEncBinCABACCounter::getNumWrittenBits()
|
|
{
|
|
return m_pcTComBitIf->getNumberOfWrittenBits() + UInt( m_fracBits >> 15 );
|
|
}
|
|
|
|
/**
|
|
* \brief Encode bin
|
|
*
|
|
* \param binValue bin value
|
|
* \param rcCtxModel context model
|
|
*/
|
|
Void TEncBinCABACCounter::encodeBin( UInt binValue, ContextModel &rcCtxModel )
|
|
{
|
|
#ifdef DEBUG_ENCODER_SEARCH_BINS
|
|
const UInt64 startingFracBits = m_fracBits;
|
|
#endif
|
|
|
|
m_uiBinsCoded += m_binCountIncrement;
|
|
m_fracBits += rcCtxModel.getEntropyBits( binValue );
|
|
rcCtxModel.update( binValue );
|
|
|
|
#ifdef DEBUG_ENCODER_SEARCH_BINS
|
|
if ((g_debugCounter + debugEncoderSearchBinWindow) >= debugEncoderSearchBinTargetLine)
|
|
std::cout << g_debugCounter << ": coding bin value " << binValue << ", fracBits = [" << startingFracBits << "->" << m_fracBits << "]\n";
|
|
|
|
if (g_debugCounter >= debugEncoderSearchBinTargetLine)
|
|
{
|
|
Char breakPointThis;
|
|
breakPointThis = 7;
|
|
}
|
|
if (g_debugCounter >= (debugEncoderSearchBinTargetLine + debugEncoderSearchBinWindow)) exit(0);
|
|
g_debugCounter++;
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* \brief Encode equiprobable bin
|
|
*
|
|
* \param binValue bin value
|
|
*/
|
|
Void TEncBinCABACCounter::encodeBinEP( UInt binValue )
|
|
{
|
|
m_uiBinsCoded += m_binCountIncrement;
|
|
m_fracBits += 32768;
|
|
}
|
|
|
|
/**
|
|
* \brief Encode equiprobable bins
|
|
*
|
|
* \param binValues bin values
|
|
* \param numBins number of bins
|
|
*/
|
|
Void TEncBinCABACCounter::encodeBinsEP( UInt binValues, Int numBins )
|
|
{
|
|
m_uiBinsCoded += numBins & -m_binCountIncrement;
|
|
m_fracBits += 32768 * numBins;
|
|
}
|
|
|
|
/**
|
|
* \brief Encode terminating bin
|
|
*
|
|
* \param binValue bin value
|
|
*/
|
|
Void TEncBinCABACCounter::encodeBinTrm( UInt binValue )
|
|
{
|
|
m_uiBinsCoded += m_binCountIncrement;
|
|
m_fracBits += ContextModel::getEntropyBitsTrm( binValue );
|
|
}
|
|
|
|
Void TEncBinCABACCounter::align()
|
|
{
|
|
m_fracBits = (m_fracBits + 32767) & (~32767);
|
|
}
|
|
|
|
//! \}
|
|
#endif
|
|
|