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loader.h

/*
    Aeskulap ImagePool - DICOM abstraction library
    Copyright (C) 2005  Alexander Pipelka

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

    Alexander Pipelka
    pipelka@teleweb.at

    Last Update:      $Author: braindead $
    Update Date:      $Date: 2006/02/23 22:40:27 $
    Source File:      $Source: /sources/aeskulap/aeskulap/imagepool/loader.h,v $
    CVS/RCS Revision: $Revision: 1.10 $
    Status:           $State: Exp $
*/

#ifndef IMAGEPOOL_LOADER_H
#define IMAGEPOOL_LOADER_H

#include <glibmm.h>
#include <queue>
#include <set>
#include <map>

#include "poolstudy.h"

class DcmDataset;

namespace ImagePool {

class Instance;
class Study;

class Loader {
public:

      Loader();
      
      virtual ~Loader();
      
      bool start();

      void stop();

      bool busy();

      sigc::signal< void, Glib::RefPtr<ImagePool::Study> > signal_study_added;

      Glib::Dispatcher signal_error;

protected:

      class CacheEntry {
      public:

            CacheEntry() : m_instancecount(0), m_seriescount(0) {
            };

            Glib::RefPtr<ImagePool::Study> m_study;

            guint m_instancecount;

            std::set< std::string > m_seriesuid;
            
            guint m_seriescount;

      };

      virtual bool run();
      
      virtual void finished();

      virtual bool on_timeout();

      void add_image(DcmDataset* dset);

      void process_instance();
      
      Glib::Thread* m_loader;

      //Glib::Dispatcher m_add_image;

      //Glib::Dispatcher m_finished;
      
      Glib::Mutex m_mutex;

      bool m_busy;

      std::map<std::string, CacheEntry> m_cache;

      sigc::connection m_conn_timer;

      bool m_finished;

private:

      void thread();
      
      std::queue< Glib::RefPtr<ImagePool::Instance> > m_imagequeue;
      
};

} // namespace ImagePool

#endif // IMAGEPOOL_LOADER_H

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