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pngwriter.h

//    Copyright (C) 2007 Dirk Vanden Boer <dirk.vdb@gmail.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.
//
//    This program 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 this program; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#ifndef PNG_WRITER_H
#define PNG_WRITER_H

#include <string>
#include <png.h>

class VideoFrame;

typedef unsigned char byte;

struct RGBData
{
      int width;
      int height;
      
      byte** imageData;
};

class PngWriter
{
public:
      PngWriter(const std::string& outputFile);
      ~PngWriter();
      
      void setPngText(const std::string& key, const std::string& value);
      void writeFrame(png_byte** rgbData, int width, int height);
      
private:
      static void writeRowCallback(png_structp, png_uint_32, int);
      
private:
      FILE*             m_FilePtr;
      png_structp m_PngPtr;
      png_infop   m_InfoPtr;
};

#endif

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