InPortPublisher.hxx

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/*
 * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef __InPortPublisher_hxx__
#define __InPortPublisher_hxx__

#include "InPort.hxx"
#include <typeinfo>

namespace CLAM
{

template<typename Token>
class InPortPublisher : public InPortBase
{
        typedef InPort<Token> ProperInPort;     
        
        int GetSize()   { return 0; }
        void SetSize(int newSize) {}
        int GetHop() { return 0; }
        void SetHop(int newHop) {}
        
public:
        typedef std::list< ProperInPort * > ProperInPortsList;

        InPortPublisher( const std::string & name = "unnamed in port", Processing * proc = 0 )
                : InPortBase( name, proc )
        {
        }
        
        virtual ~InPortPublisher()
        {       
                if ( GetVisuallyConnectedOutPort() )
                        Disconnect();
        }

        void PublishInPort( InPortBase & in )
        {
                try
                {
                        ConcretePublishInPort( dynamic_cast<ProperInPort&>(in) );
                } catch (...) // could be std::bad_cast ?
                {
                        CLAM_ASSERT( false,
                        "InPortPublisher<Token>::PublishInPort coudn't connect to outPort "
                        "because was not templatized by the same Token type as InPortPublisher" );
                }

        }
        //why not pass InPortBase? still not needed to call from the "generic" interface
        void UnPublishInPort( ProperInPort& in )
        {
                mPublishedInPortsList.remove(&in);
        }

        void ConcretePublishInPort( ProperInPort & in )
        {
                mPublishedInPortsList.push_back( &in );
        }
        
        
        
        bool CanConsume()
        {
                typename ProperInPortsList::iterator it;
                for(it=mPublishedInPortsList.begin(); it!=mPublishedInPortsList.end(); it++)
                        if(!(*it)->CanConsume())
                                return false;
                return true;    
        }
        

        typename ProperInPortsList::iterator BeginPublishedInPortsList()
        {
                return mPublishedInPortsList.begin();
        }
        
        typename ProperInPortsList::iterator EndPublishedInPortsList()
        {
                return mPublishedInPortsList.end();
        }

        void UnAttachRegion() 
        {
                SetVisuallyConnectedOutPort( 0 );
                typename ProperInPortsList::iterator it;
                for(it=mPublishedInPortsList.begin(); it!=mPublishedInPortsList.end(); it++)
                {
                        (*it)->UnAttachRegion();
                }
        }
        
        bool IsPublisherOf( InPortBase& in)
        {       
                // BIG TODO: go in-depth (search for publisher-publiser-inport)
                typename ProperInPortsList::iterator it;
                for(it=mPublishedInPortsList.begin(); it!=mPublishedInPortsList.end(); it++)
                {
                        if( *it == &in)
                                return true;
                }
                return false;
        }
        virtual const std::type_info & GetTypeId() const 
        {
                return typeid(Token);
        };
 protected:

        ProperInPortsList mPublishedInPortsList;
};

} // namespace CLAM

#endif // __InPortPublisher_hxx__

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