ProcessByBoxcar.cpp

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#include "BoxcarCachingAlgorithm.h"
#include "BoxcarManager.h"
#include "Buffer.h"
#include "LineManager.h"
#include "Process.h"
#include "ProcessByBoxcar.h"

using namespace std;
namespace Isis {

  void ProcessByBoxcar::SetBoxcarSize(const int ns, const int nl) {

    p_boxSamples = ns;
    p_boxLines = nl;
    p_boxsizeSet = true;
  }

  void ProcessByBoxcar::StartProcess(void funct(Isis::Buffer &in, double &out)) {
    // Error checks ... there must be one input and output
    if(InputCubes.size() != 1) {
      string m = "You must specify exactly one input cube";
      throw IException(IException::Programmer, m, _FILEINFO_);
    }
    else if(OutputCubes.size() != 1) {
      string m = "You must specify exactly one output cube";
      throw IException(IException::Programmer, m, _FILEINFO_);
    }

    // The lines in the input and output must match
    if(InputCubes[0]->lineCount() != OutputCubes[0]->lineCount()) {
      string m = "The number of lines in the input and output cubes ";
      m += "must match";
      throw IException(IException::Programmer, m, _FILEINFO_);
    }

    // The samples in the input and output must match
    if(InputCubes[0]->sampleCount() != OutputCubes[0]->sampleCount()) {
      string m = "The number of samples in the input and output cubes ";
      m += "must match";
      throw IException(IException::Programmer, m, _FILEINFO_);
    }

    // The bands in the input and output must match
    if(InputCubes[0]->bandCount() != OutputCubes[0]->bandCount()) {
      string m = "The number of bands in the input and output cubes ";
      m += "must match";
      throw IException(IException::Programmer, m, _FILEINFO_);
    }

    //  Make sure the boxcar size has been set
    if(!p_boxsizeSet) {
      string m = "Use the SetBoxcarSize method to set the boxcar size";
      throw IException(IException::Programmer, m, _FILEINFO_);
    }

    // Construct boxcar buffer and line buffer managers
    Isis::BoxcarManager box(*InputCubes[0], p_boxSamples, p_boxLines);
    Isis::LineManager line(*OutputCubes[0]);
    double out;

    InputCubes[0]->addCachingAlgorithm(new BoxcarCachingAlgorithm());
    OutputCubes[0]->addCachingAlgorithm(new BoxcarCachingAlgorithm());

    // Loop and let the app programmer use the boxcar to change output pixel
    p_progress->SetMaximumSteps(InputCubes[0]->lineCount()*InputCubes[0]->bandCount());
    p_progress->CheckStatus();

    box.begin();
    for(line.begin(); !line.end(); line.next()) {
      for(int i = 0; i < line.size(); i++) {
        InputCubes[0]->read(box);
        funct(box, out);
        line[i] = out;
        box++;
      }
      OutputCubes[0]->write(line);
      p_progress->CheckStatus();
    }

  }

  void ProcessByBoxcar::EndProcess() {

    p_boxsizeSet = false;
    Isis::Process::EndProcess();

  }

  void ProcessByBoxcar::Finalize() {

    p_boxsizeSet = false;
    Isis::Process::Finalize();

  }
} // end namespace isis