qgsrasternuller.h

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/***************************************************************************
                         qgsrasternuller.h
                         -------------------
    begin                : August 2012
    copyright            : (C) 2012 by Radim Blazek
    email                : radim dot blazek at gmail dot 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.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSRASTERNULLER_H
#define QGSRASTERNULLER_H
 
#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgsrasterinterface.h"
#include "qgsrasterrange.h"
 
#include <QList>

class CORE_EXPORT QgsRasterNuller : public QgsRasterInterface
{
  public:
    QgsRasterNuller( QgsRasterInterface *input = nullptr );
 
    struct NoData
    {
      double min;
      double max;
    };
 
    QgsRasterNuller *clone() const override SIP_FACTORY;
 
    int bandCount() const override;
 
    Qgis::DataType dataType( int bandNo ) const override;
 
    QgsRasterBlock *block( int bandNo, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback = nullptr ) override SIP_FACTORY;
 
    void setNoData( int bandNo, const QgsRasterRangeList &noData );
 
    QgsRasterRangeList noData( int bandNo ) const { return mNoData.value( bandNo - 1 ); }

    void setOutputNoDataValue( int bandNo, double noData );
 
  private:
    // no data indexed from 0
    QVector< QgsRasterRangeList > mNoData;
    // no data to be set in output, indexed from 0
    QVector<double> mOutputNoData;
    QVector<bool> mHasOutputNoData;
};
 
#endif // QGSRASTERNULLER_H