pipe.hpp

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/*
  PIPE.hpp  -  structural asset denoting a processing pipe generating media output

   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 ASSET_PIPE_H
#define ASSET_PIPE_H

#include "steam/asset/struct.hpp"
#include "steam/asset/procpatt.hpp"
#include "steam/streamtype.hpp"
#include "common/query.hpp"

#include <string>



namespace steam {
namespace asset {
  
  using lumiera::Query;
  using std::string;
  
  class Pipe;
  typedef lib::P<Pipe> PPipe;
  
  
  template<>
  class ID<Pipe> : public ID<Struct>
    {
    public:
      ID (HashVal id);
      ID (Pipe const&);
      ID (PPipe const&);
      
      operator PPipe()  const;
      
      StreamType::ID streamType()  const;
    };
  
  
  
  class Pipe
    : public Struct
    {
      PProcPatt wiringTemplate_;
      StreamType::ID streamID_;              
      
    public:
      string shortDesc;
      string longDesc;
      
      virtual const ID<Pipe>& getID()  const    
        { 
          return static_cast<const ID<Pipe>& > (Asset::getID()); 
        }
      
      
    protected:
      Pipe (Asset::Ident const&, string const& streamID, PProcPatt& wiring, string shortName ="", string longName ="") ;
//    friend class StructFactory;
      friend class StructFactoryImpl;
      
    public:
      string const& getPipeID()       const { return ident.name;      }
      StreamType::ID getStreamID()    const { return streamID_;       }   
      PProcPatt const& getProcPatt()  const { return wiringTemplate_; }
      
      
      void switchProcPatt (PProcPatt& another);
      
      static PPipe query (string const& properties);
      
      static PPipe lookup (ID<Pipe> id);
    };
    
    
   // catch up with postponed definition of ID<Struct> ctors...
  //
  inline ID<Pipe>::ID(HashVal id)        : ID<Struct> (id)            {};
  inline ID<Pipe>::ID(Pipe const& pipe)  : ID<Struct> (pipe.getID())  {};
  inline ID<Pipe>::ID(PPipe const& pipe) : ID<Struct> (pipe->getID()) {};
  
  inline
  ID<Pipe>::operator PPipe() const
    {
      return Pipe::lookup(*this);
    }
  
  inline StreamType::ID
  ID<Pipe>::streamType() const
    {
      return Pipe::lookup(*this)->getStreamID();
    }
  
  
  
  
}} // namespace steam::asset
#endif