stypemanager.hpp

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/*
  STYPEMANAGER.hpp  -  entry point for dealing with media stream types

   Copyright (C)
     2008,            Hermann Vosseler <Ichthyostega@web.de>

  **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 STEAM_CONTROL_STYPEMANAGER_H
#define STEAM_CONTROL_STYPEMANAGER_H


#include "steam/streamtype.hpp"
#include "lib/depend.hpp"

#include <memory>


namespace steam {
namespace control {
  
  using lib::Symbol;
  
  
  class STypeManager
    {
      
      class Registry;
      std::unique_ptr<Registry> reg_;
      
    public:
      static lib::Depend<STypeManager> instance;
      
      typedef StreamType::ImplFacade ImplFacade;
      
      
      StreamType const& getType (Symbol sTypeID) ;
      
      StreamType const& getType (StreamType::ID stID) ;
      
      StreamType const& getType (StreamType::Prototype const& protoType) ;
      
      StreamType const& getType (StreamType::ImplFacade const& implType) ;
      
      ImplFacade const& getImpl (Symbol libID, StreamType::Prototype const& protoType) ;
      
      template<class TY>
      ImplFacade const& getImpl (Symbol libID, TY& rawType) ;
      
      
      
    protected:
      STypeManager() ;
      ~STypeManager();
      
      friend class lib::DependencyFactory<STypeManager>;
      
      void reset() ;
      
    private:
      ImplFacade const& fetchImpl (StreamType::ImplFacade::TypeTag);
    };
  
  extern const char* ON_STREAMTYPES_RESET;  
  
  
  template<class TY>
  StreamType::ImplFacade const&
  STypeManager::getImpl (Symbol libID, TY& rawType)
  {
    return fetchImpl (ImplFacade::TypeTag (libID,rawType));
  }
  
  
}} // namespace steam::control


namespace proc_interface {
  
  using steam::control::STypeManager;


} // namespace proc_interface


extern "C" { //TODO provide a separate header if some C code or plugin happens to need this...
  
  void
  lumiera_StreamType_registerInitFunction (void setupFun(void));
  
  // TODO provide a C interface usable from such a setupFun to access the STypeManager registration functions.
}


#endif