otbPersistentImageToOGRDataFilter.txx

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/*
 * Copyright (C) 1999-2011 Insight Software Consortium
 * 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 otbPersistentImageToOGRDataFilter_txx
#define otbPersistentImageToOGRDataFilter_txx

#include "otbPersistentImageToOGRDataFilter.h"
#include "otbStopwatch.h"
#include <boost/foreach.hpp>
#include <stdio.h>
#include "otbMacro.h"
#include "otbOGRHelpers.h"

namespace otb
{

template<class TImage>
PersistentImageToOGRDataFilter<TImage>
::PersistentImageToOGRDataFilter()
  : m_FieldName("DN")
  , m_LayerName("Layer")
  , m_GeometryType(wkbMultiPolygon)
  , m_FieldType(OFTInteger)
{
   this->SetNumberOfRequiredInputs(2);
   this->SetNumberOfRequiredInputs(2);
   m_StreamSize.Fill(0);
}

template<class TImage>
PersistentImageToOGRDataFilter<TImage>
::~PersistentImageToOGRDataFilter()
{
}

template<class TImage>
void
PersistentImageToOGRDataFilter<TImage>
::SetOGRDataSource( OGRDataSourcePointerType ogrDS )
{
   this->itk::ProcessObject::SetNthInput(1, ogrDS);
}

template<class TImage>
typename PersistentImageToOGRDataFilter<TImage>::OGRDataSourceType *
PersistentImageToOGRDataFilter<TImage>
::GetOGRDataSource( void )
{
   return static_cast<OGRDataSourceType *> (this->itk::ProcessObject::GetInput(1));
}

template<class TImage>
void
PersistentImageToOGRDataFilter<TImage>
::AddOGRLayerCreationOption(const std::string& option)
{
  m_OGRLayerCreationOptions.push_back(option);
  this->Modified();
}

template<class TImage>
void
PersistentImageToOGRDataFilter<TImage>
::ClearOGRLayerCreationOptions()
{
  m_OGRLayerCreationOptions.clear();
  this->Modified();
}

template<class TImage>
void
PersistentImageToOGRDataFilter<TImage>
::SetOGRLayerCreationOptions(const std::vector<std::string>&  options)
{
  m_OGRLayerCreationOptions = options;
  this->Modified();
}

template<class TImage>
const std::vector<std::string>&
PersistentImageToOGRDataFilter<TImage>
::GetOGRLayerCreationOptions(void)
{
  return m_OGRLayerCreationOptions;
}

template<class TImage>
void
PersistentImageToOGRDataFilter<TImage>
::AllocateOutputs()
{
  // Nothing that needs to be allocated for the outputs : the output is not meant to be used
}

template<class TImage>
void
PersistentImageToOGRDataFilter<TImage>
::Reset()
{
}

template<class TImage>
void
PersistentImageToOGRDataFilter<TImage>
::Synthetize()
{
}

template<class TImage>
void
PersistentImageToOGRDataFilter<TImage>
::Initialize()
{
   std::string projectionRefWkt = this->GetInput()->GetProjectionRef();
   bool projectionInformationAvailable = !projectionRefWkt.empty();
   OGRSpatialReference * oSRS = NULL;
   if(projectionInformationAvailable)
   {
      oSRS = static_cast<OGRSpatialReference *>(OSRNewSpatialReference(projectionRefWkt.c_str()));
   }

   OGRDataSourcePointerType ogrDS = this->GetOGRDataSource();
   OGRLayerType outLayer = ogrDS->CreateLayer(m_LayerName, oSRS ,m_GeometryType, m_OGRLayerCreationOptions);
   OGRFieldDefn field(m_FieldName.c_str(),m_FieldType);
   outLayer.CreateField(field, true);
}


template<class TImage>
void
PersistentImageToOGRDataFilter<TImage>
::GenerateData()
{

  if (this->GetStreamSize()[0]==0 && this->GetStreamSize()[1]==0)
  {
     this->m_StreamSize = this->GetInput()->GetRequestedRegion().GetSize();
  }

  // call the processing function for this tile
  OGRDataSourcePointerType currentTileVD = this->ProcessTile();
  OGRLayerType srcLayer = currentTileVD->GetLayerChecked(0);

  OGRDataSourcePointerType ogrDS = this->GetOGRDataSource();
  OGRLayerType dstLayer = ogrDS->GetLayersCount() == 1
                          ? ogrDS->GetLayer(0)
                          : ogrDS->GetLayer(m_LayerName);


  //Copy features contained in the memory layer (srcLayer) in the output layer
  otb::Stopwatch chrono = otb::Stopwatch::StartNew();

  OGRErr err = dstLayer.ogr().StartTransaction();
  if (err != OGRERR_NONE)
    {
    itkExceptionMacro(<< "Unable to start transaction for OGR layer " << dstLayer.ogr().GetName() << ".");
    }

  OGRLayerType::const_iterator featIt = srcLayer.begin();
  for(; featIt!=srcLayer.end(); ++featIt)
  {
      OGRFeatureType dstFeature(dstLayer.GetLayerDefn());
      dstFeature.SetFrom( *featIt, TRUE );
      dstLayer.CreateFeature( dstFeature );
  }

  err = dstLayer.ogr().CommitTransaction();

  if (err != OGRERR_NONE)
    {
    itkExceptionMacro(<< "Unable to commit transaction for OGR layer " << dstLayer.ogr().GetName() << ".");
    }

  chrono.Stop();
  otbMsgDebugMacro(<< "Writing OGR tile took " << chrono.GetElapsedMilliseconds() << " ms");
}

template<class TImage>
void
PersistentImageToOGRDataFilter<TImage>
::PrintSelf(std::ostream& os, itk::Indent indent) const
{
  Superclass::PrintSelf(os, indent);
}

} // end namespace otb
#endif