Add modules to perform 8 and 9 bits frame difference

modules/FrameDifference9Bits.cpp

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+/*    This file is a part of plaYUVer project
+ *    Copyright (C) 2014-2015  by Luis Lucas      (luisfrlucas@gmail.com)
+ *                                Joao Carreira   (jfmcarreira@gmail.com)
+ *
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License along
+ *   with this program; if not, write to the Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/**
+ * \file     FrameDifference9Bits.cpp
+ * \brief    Frame Difference module
+ */
+
+#include "FrameDifference9Bits.h"
+#include <algorithm>
+
+namespace plaYUVer
+{
+
+FrameDifference9Bits::FrameDifference9Bits()
+{
+  /* Module Definition */
+  m_iModuleAPI = MODULE_API_2;
+  m_iModuleType = FRAME_PROCESSING_MODULE;
+  m_pchModuleCategory = "Measurements";
+  m_pchModuleName = "FrameDifference9Bits";
+  m_pchModuleTooltip = "Measure the difference between two images (Y plane),  Y1 - Y2, with max absolute diff of 128";
+  m_uiModuleRequirements = MODULE_REQUIRES_NEW_WINDOW;
+  m_uiNumberOfFrames = MODULE_REQUIRES_TWO_FRAMES;
+
+  m_pcFrameDifference9Bits = NULL;
+}
+
+Bool FrameDifference9Bits::create( std::vector<PlaYUVerFrame*> apcFrameList )
+{
+  _BASIC_MODULE_API_2_CHECK_
+  UInt bitsPixel = ( apcFrameList[0]->getBitsPel() + 1 ) & 0x0F;
+  m_iMaxDiffValue = ( 1 << ( bitsPixel - 1 ) );
+  m_pcFrameDifference9Bits = new PlaYUVerFrame( apcFrameList[0]->getWidth(), apcFrameList[0]->getHeight(), PlaYUVerFrame::GRAY, bitsPixel );
+  return true;
+}
+
+PlaYUVerFrame* FrameDifference9Bits::process( std::vector<PlaYUVerFrame*> apcFrameList )
+{
+  Pel* pInput1PelYUV =  apcFrameList[0]->getPelBufferYUV()[0][0];
+  Pel* pInput2PelYUV = apcFrameList[1]->getPelBufferYUV()[0][0];
+  Pel* pOutputPelYUV = m_pcFrameDifference9Bits->getPelBufferYUV()[0][0];
+  Int aux_pel_1, aux_pel_2;
+  Int diff = 0;
+
+  for( UInt y = 0; y < m_pcFrameDifference9Bits->getHeight(); y++ )
+    for( UInt x = 0; x < m_pcFrameDifference9Bits->getWidth(); x++ )
+    {
+      aux_pel_1 = *pInput1PelYUV++;
+      aux_pel_2 = *pInput2PelYUV++;
+      diff = aux_pel_1 - aux_pel_2;
+      diff = std::min( diff, m_iMaxDiffValue );
+      diff = std::max( diff, -m_iMaxDiffValue );
+      diff += m_iMaxDiffValue + 1;
+      *pOutputPelYUV++ = diff;
+    }
+  return m_pcFrameDifference9Bits;
+}
+
+Void FrameDifference9Bits::destroy()
+{
+  if( m_pcFrameDifference9Bits )
+    delete m_pcFrameDifference9Bits;
+  m_pcFrameDifference9Bits = NULL;
+}
+
+}  // NAMESPACE
+