108 lines
3.5 KiB
C++
108 lines
3.5 KiB
C++
/* This file is a part of plaYUVer project
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* Copyright (C) 2014-2016 by Luis Lucas (luisfrlucas@gmail.com)
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* Joao Carreira (jfmcarreira@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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#include <algorithm>
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FrameDifference::FrameDifference()
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{
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/* Module Definition */
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m_iModuleAPI = MODULE_API_2;
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m_iModuleType = FRAME_PROCESSING_MODULE;
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m_pchModuleCategory = "Measurements";
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m_pchModuleName = "FrameDifference";
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m_pchModuleTooltip = "Measure the difference between two images (Y plane), Y1 - Y2, with max absolute diff of 128";
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m_uiModuleRequirements = MODULE_REQUIRES_NEW_WINDOW | MODULE_REQUIRES_OPTIONS;
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m_uiNumberOfFrames = MODULE_REQUIRES_TWO_FRAMES;
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m_cModuleOptions.addOptions()/**/
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( "Bits per pixel", m_uiBitsPixel, "Bits per pixel (use zero to avoid scaling) [0]" );
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m_uiBitsPixel = 0;
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m_pcFrameDifference = NULL;
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}
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Bool FrameDifference::create( std::vector<PlaYUVerFrame*> apcFrameList )
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{
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_BASIC_MODULE_API_2_CHECK_
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UInt uiMaxBitsPixel = 0;
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for( UInt i = 0; i < apcFrameList.size(); i++ )
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{
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if( !apcFrameList[i]->haveSameFmt( apcFrameList[0], PlaYUVerFrame::MATCH_COLOR_SPACE | PlaYUVerFrame::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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}
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}
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if( !m_uiBitsPixel )
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{
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m_uiBitsPixel = ( uiMaxBitsPixel + 1 ) & 0x0F;
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}
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m_iDiffBitShift = ( uiMaxBitsPixel + 1 ) - m_uiBitsPixel;
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m_iMaxDiffValue = ( 1 << ( m_uiBitsPixel - 1 ) );
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m_pcFrameDifference = new PlaYUVerFrame( apcFrameList[0]->getWidth(), apcFrameList[0]->getHeight(), PlaYUVerFrame::GRAY, m_uiBitsPixel );
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return true;
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}
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PlaYUVerFrame* FrameDifference::process( std::vector<PlaYUVerFrame*> apcFrameList )
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{
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Pel* pInput1PelYUV = apcFrameList[0]->getPelBufferYUV()[0][0];
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Pel* pInput2PelYUV = apcFrameList[1]->getPelBufferYUV()[0][0];
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Pel* pOutputPelYUV = m_pcFrameDifference->getPelBufferYUV()[0][0];
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Int aux_pel_1, aux_pel_2;
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Int diff = 0;
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for( UInt y = 0; y < m_pcFrameDifference->getHeight(); y++ )
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for( UInt x = 0; x < m_pcFrameDifference->getWidth(); x++ )
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{
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aux_pel_1 = *pInput1PelYUV++;
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aux_pel_2 = *pInput2PelYUV++;
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diff = aux_pel_1 - aux_pel_2;
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diff = m_iDiffBitShift > 0 ? diff >> m_iDiffBitShift : diff << m_iDiffBitShift;
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diff = std::min( diff, m_iMaxDiffValue - 1 );
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diff = std::max( diff, -m_iMaxDiffValue );
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diff += m_iMaxDiffValue;
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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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