PNGImageWriter.h

// Copyright 2012-2014 Nicolas Normand <Nicolas.Normand@polytech.univ-nantes.fr>
// 
// This file is part of LUTBasedNSDistanceTransform.
// 
// LUTBasedNSDistanceTransform 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 3 of the License, or (at your
// option) any later version.
// 
// LUTBasedNSDistanceTransform 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
// LUTBasedNSDistanceTransform.  If not, see <http://www.gnu.org/licenses/>.
//
// $Id: PNGImageWriter.h 150 2014-02-26 08:59:35Z Nicolas.Normand $

/*
 *  PNGImageWriter.h
 *  LUTBasedNSDistanceTransform
 */

#include "ImageFilter.h"
#include <png.h>

class PNGImageWriter : public ImageConsumer<GrayscalePixelType> {
public:
    PNGImageWriter(FILE* output, bool lineBuffered = false);

    void beginOfImage(int cols, int rows);

    void endOfImage();

    void processRow(const GrayscalePixelType* inputRow);

protected:
    png_structp _png_ptr;
    png_infop _info_ptr;

    FILE* _output;
    bool _lineBuffered;
};