text: /*
   * Copyright (C) 2005-2017 Centre National d'Etudes Spatiales (CNES)
   *
   * This file is part of Orfeo Toolbox
   *
   *     https://www.orfeo-toolbox.org/
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #ifndef otbNumberOfLinesStrippedStreamingManager_hxx
  #define otbNumberOfLinesStrippedStreamingManager_hxx
  
  #include "otbNumberOfLinesStrippedStreamingManager.h"
  #include "otbMacro.h"
  
  namespace otb
  {
  
  template <class TImage>
  NumberOfLinesStrippedStreamingManager<TImage>::NumberOfLinesStrippedStreamingManager()
    : m_NumberOfLinesPerStrip(0)
  {
  }
  
  template <class TImage>
  NumberOfLinesStrippedStreamingManager<TImage>::~NumberOfLinesStrippedStreamingManager()
  {
  }
  
  template <class TImage>
  void
  NumberOfLinesStrippedStreamingManager<TImage>::PrepareStreaming( itk::DataObject * /*input*/, const RegionType &region )
  {
    otbMsgDevMacro(<< "Activating STRIPPED_SET_NUMBEROFLINES streaming mode")
    if (m_NumberOfLinesPerStrip < 1)
      {
      itkWarningMacro(<< "DesiredNumberOfLines set to 0 : streaming disabled")
      }
  
    // Calculate number of splits
    unsigned long numberLinesOfRegion = region.GetSize()[1]; // Y dimension
    unsigned long nbSplit;
    if (numberLinesOfRegion > m_NumberOfLinesPerStrip && m_NumberOfLinesPerStrip > 0)
      {
      nbSplit =
        static_cast<unsigned long>(std::ceil(static_cast<double>(numberLinesOfRegion) /
                                            static_cast<double>(m_NumberOfLinesPerStrip) ) );
      }
    else
      {
      // Don't stream
      nbSplit = 1;
      }
  
    this->m_Splitter = itk::ImageRegionSplitter<itkGetStaticConstMacro(ImageDimension)>::New();
    this->m_ComputedNumberOfSplits = this->m_Splitter->GetNumberOfSplits(region, nbSplit);
    otbMsgDevMacro(<< "Computed number of split : " << this->m_ComputedNumberOfSplits)
  
    // Save the region to generate the splits later
    this->m_Region = region;
  }
  
  } // End namespace otb
  
  #endif
  
  