OpenJPEGImage.h

/*  IIP Server: OpenJPEG JPEG2000 handler
 
    Copyright (C) 2019-2024 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
 
 
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_widths.push_back(TILESIZE); tile_heights.push_back(TILESIZE);
  };
 
 
 
  OpenJPEGImage( const std::string& path)  : IIPImage(path){
    _stream = NULL; _codec = NULL; _image = NULL;
    tile_widths.push_back(TILESIZE); tile_heights.push_back(TILESIZE);
  };
 
 
 
  OpenJPEGImage( const OpenJPEGImage& image ): IIPImage( image ) {};
 
 
 
  OpenJPEGImage( const IIPImage& image ) : IIPImage(image){
    _stream = NULL; _codec = NULL; _image = NULL;
    tile_widths.push_back(TILESIZE); tile_heights.push_back(TILESIZE);
  };
 
 
  ~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, ImageEncoding e = ImageEncoding::RAW );
 
 
 
  RawTile getRegion( int ha, int va, unsigned int res, int layers, int x, int y, unsigned int w, unsigned int h );
 
 
 
  static std::string getCodecVersion(){ return opj_version(); };
 
 
};
 
#endif