displayer.hpp

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/*
  DISPLAYER.hpp  -  base class for displaying video
 
   Copyright (C)
     2000,            Arne Schirmacher <arne@schirmacher.de>
     2001-2007,       Dan Dennedy <dan@dennedy.org>
     2008,            Joel Holdsworth <joel@airwebreathe.org.uk>
 
 **Lumiera** 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. See the file COPYING for further details.
 
*/
 
#ifndef STAGE_OUTPUT_DISPLAYER_H
#define STAGE_OUTPUT_DISPLAYER_H
 
 
#include "lib/nocopy.hpp"
#include "include/display-handles.hpp"
 
namespace stage {
namespace output {
  
  using lumiera::DisplayerInput;
  
  
  class Displayer
    : util::NonCopyable
    {
    protected:
      const uint videoWidth;
      const uint videoHeight;
      
    public:
      virtual ~Displayer() { }
      
      Displayer(uint w, uint h)
        : videoWidth{w}
        , videoHeight{h}
        { }
      
      
      virtual bool usable()  =0;
      
      virtual DisplayerInput format();
      
      virtual void put (void* const)  =0;
      
      
    protected:
      void calculateVideoLayout(int widgetWidth
                               ,int widgetHeight
                               ,int& imgOrg_x
                               ,int& imgOrg_y
                               ,int& imgWidth
                               ,int& imgHeight
                               );
    };
  
  
  
}} // namespace stage::output
#endif /*STAGE_OUTPUT_DISPLAYER_H*/