OpenJPEGImage.h

/*  IIP Server: OpenJPEG JPEG2000 handler

    Copyright (C) 2019 Ruven Pillay.

    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 3 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, see <http://www.gnu.org/licenses/>.

*/

#ifndef _OPENJPEGIMAGE_H
#define _OPENJPEGIMAGE_H

#include "IIPImage.h"
#include <openjpeg.h>


#define TILESIZE 256

extern std::ofstream logfile;

class OpenJPEGImage : public IIPImage {

 private:

  opj_stream_t* _stream;  
  opj_codec_t*  _codec;   
  opj_image_t*  _image;   



  void process( unsigned int r, int l, int x, int y, unsigned int w, unsigned int h, void* d );



 public:

  OpenJPEGImage() : IIPImage(){
    _stream = NULL; _codec = NULL; _image = NULL;
    tile_width = TILESIZE; tile_height = TILESIZE; virtual_levels = 0;
  };



  OpenJPEGImage( const std::string& path)  : IIPImage(path){
    _stream = NULL; _codec = NULL; _image = NULL;
    tile_width = TILESIZE; tile_height = TILESIZE; virtual_levels = 0;
  };



  OpenJPEGImage( const OpenJPEGImage& image ): IIPImage( image ) {};



  OpenJPEGImage( const IIPImage& image ) : IIPImage(image){
    _stream = NULL; _codec = NULL; _image = NULL;
    tile_width = TILESIZE; tile_height = TILESIZE; virtual_levels = 0;
  };


  ~OpenJPEGImage(){ closeImage(); };


  void openImage();



  void loadImageInfo( int x, int y );


  void closeImage();


  bool regionDecoding(){ return true; };



  RawTile getTile( int x, int y, unsigned int r, int l, unsigned int t );



  RawTile getRegion( int ha, int va, unsigned int res, int layers, int x, int y, unsigned int w, unsigned int h );

};

#endif