FreeImageLoader.h

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//    Copyright 2004, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API 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.
//
//    H3D API 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 H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __FREEIMAGELOADER_H__
#define __FREEIMAGELOADER_H__

#include "H3DImageLoaderNode.h"

#ifdef HAVE_FREEIMAGE

#include "FreeImageImage.h"

namespace H3D {
  class H3DAPI_API FreeImageLoader : public H3DImageLoaderNode {
  public:
    FreeImageLoader() {
      type_name = "FreeImageLoader";
    }

    virtual Image *loadImage( const string &url ) {
        
      FREE_IMAGE_FORMAT format = FreeImage_GetFileType( url.c_str() );
      if( format == FIF_UNKNOWN ) {
        format = FreeImage_GetFIFFromFilename( url.c_str() );
      }

      if( format != FIF_UNKNOWN && FreeImage_FIFSupportsReading( format ) ) { 
        FIBITMAP *bm = FreeImage_Load( format, url.c_str() );
        
        if( bm ) {
          // Take care of the case of 32 bit RGB images( alpha ignored ) that seems to
          // happen once in a while with png images
          if( FreeImage_GetColorType( bm ) == FIC_RGB && FreeImage_GetBPP( bm ) == 32 ) {
            FIBITMAP *old = bm;
            bm = FreeImage_ConvertTo24Bits( bm );
            FreeImage_Unload( old );
          }
          return new FreeImageImage( bm );
        } 
      }
      return NULL;
    }
    
    
    static bool supportsFileType( const string &url );

    static H3DNodeDatabase database;    

    static FileReaderRegistration reader_registration;
  };
}

#endif // HAVE_FREEIMAGE
#endif

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