116 lines
4.3 KiB
C++
116 lines
4.3 KiB
C++
/* This file is a part of Calyp project
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* Copyright (C) 2014-2021 by Joao Carreira (jfmcarreira@gmail.com)
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* Luis Lucas (luisfrlucas@gmail.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/**
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* \file FrameDifference.cpp
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* \brief Frame Difference module
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*/
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#include "FrameDifference.h"
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FrameDifference::FrameDifference()
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{
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/* Module Definition */
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m_iModuleAPI = CLP_MODULE_API_2;
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m_iModuleType = ClpModuleType::FrameProcessing;
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m_pchModuleCategory = "Measurements";
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m_pchModuleName = "FrameDifference";
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m_pchModuleLongName = "Difference";
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m_pchModuleTooltip = "Measure the difference between two images (Y plane), "
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"Y1 - Y2, with max absolute diff of 128";
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m_uiModuleRequirements = ClpModuleFeature::NewWindow | ClpModuleFeature::Options;
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m_uiNumberOfFrames = 2;
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m_cModuleOptions.addOptions() /**/
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( "BitsPerpixel", m_uiBitsPixel, "Bits per pixel (use zero to avoid scaling) [0]" ) /**/
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( "SumOperation", m_uiSumOperation, "Sum instead of difference [0]" );
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m_uiBitsPixel = 0;
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m_uiSumOperation = 0;
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m_iOperation = 1;
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m_pcFrameDifference = NULL;
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}
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bool FrameDifference::create( std::vector<CalypFrame*> apcFrameList )
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{
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_BASIC_MODULE_API_2_CHECK_
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m_uiSumOperation = m_uiSumOperation > 1 ? 0 : m_uiSumOperation;
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unsigned int uiMaxBitsPixel = 0;
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for( unsigned int i = 0; i < apcFrameList.size(); i++ )
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{
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if( !apcFrameList[i]->haveSameFmt( apcFrameList[0], CalypFrame::MATCH_PEL_FMT | CalypFrame::MATCH_COLOR_SPACE | CalypFrame::MATCH_RESOLUTION ) )
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return false;
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if( apcFrameList[i]->getBitsPel() > uiMaxBitsPixel )
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{
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uiMaxBitsPixel = apcFrameList[i]->getBitsPel();
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if( apcFrameList[i]->getHasNegativeValues() )
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uiMaxBitsPixel -= 1;
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}
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}
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uiMaxBitsPixel = m_uiSumOperation ? uiMaxBitsPixel : uiMaxBitsPixel + 1;
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m_uiBitsPixel = !m_uiBitsPixel ? uiMaxBitsPixel & 0x0F : m_uiBitsPixel;
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m_iDiffBitShift = uiMaxBitsPixel - m_uiBitsPixel;
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m_iMaxDiffValue = ( 1 << ( m_uiSumOperation ? m_uiBitsPixel : m_uiBitsPixel - 1 ) );
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m_pcFrameDifference = new CalypFrame( apcFrameList[0]->getWidth(), apcFrameList[0]->getHeight(),
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apcFrameList[0]->getPelFormat(), m_uiBitsPixel, m_uiSumOperation == 1 ? false : true );
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m_iOperation = m_uiSumOperation == 0 ? -1 : 1;
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return true;
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}
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CalypFrame* FrameDifference::process( std::vector<CalypFrame*> apcFrameList )
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{
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const CalypFrame& frame1 = *apcFrameList[0];
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const CalypFrame& frame2 = *apcFrameList[1];
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ClpPel* pOutputPelYUV = m_pcFrameDifference->getPelBufferYUV()[0][0];
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short aux_pel_1, aux_pel_2;
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short diff = 0;
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for( unsigned int ch = 0; ch < m_pcFrameDifference->getNumberChannels(); ch++ )
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for( unsigned int y = 0; y < m_pcFrameDifference->getHeight( ch ); y++ )
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for( unsigned int x = 0; x < m_pcFrameDifference->getWidth( ch ); x++ )
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{
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aux_pel_1 = frame1( ch, x, y, false );
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aux_pel_2 = frame2( ch, x, y, false );
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diff = aux_pel_1 + m_iOperation * aux_pel_2;
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diff = m_iDiffBitShift > 0 ? diff >> m_iDiffBitShift : diff << -m_iDiffBitShift;
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diff = std::min<short>( diff, m_iMaxDiffValue - 1 );
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if( m_uiSumOperation == 0 )
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{
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diff = std::max<short>( diff, -m_iMaxDiffValue );
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diff += m_iMaxDiffValue;
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}
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*pOutputPelYUV++ = diff;
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}
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return m_pcFrameDifference;
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}
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void FrameDifference::destroy()
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{
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if( m_pcFrameDifference )
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delete m_pcFrameDifference;
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m_pcFrameDifference = NULL;
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}
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