OutPortPublisher.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 __OutPortPublisher_hxx__
#define __OutPortPublisher_hxx__

#include "OutPort.hxx"

namespace CLAM
{

template< typename Token >
class OutPortPublisher : public OutPortBase
{
        typedef OutPort<Token> ProperOutPort;
public:
        OutPortPublisher( const std::string & name = "unnamed out port publisher", Processing * proc = 0 )
                : OutPortBase( name, proc ), mPublishedOutPort(0)
        {
                
        }

        virtual ~OutPortPublisher()
        {
                //disconnect published port
                if (mPublishedOutPort) 
                {
                        mPublishedOutPort->UnsetPublisher();
                        mPublishedOutPort->DisconnectFromAll();
                        mPublishedOutPort = 0;
                }
                //disconnect visually connected inports
                for (InPortsList::iterator it = BeginVisuallyConnectedInPorts();
                        it != EndVisuallyConnectedInPorts();
                        it++ )
                (*it)->SetVisuallyConnectedOutPort(0);
                
        }

        void DisconnectFromAll()
        {
                CLAM_DEBUG_ASSERT( mPublishedOutPort != 0, "OutPortPublisher - no out port published" );
                mPublishedOutPort->DisconnectFromAll();
                mVisuallyConnectedPorts.clear();
        }
        void ConnectToIn( InPortBase& in)
        {
                CLAM_DEBUG_ASSERT( mPublishedOutPort != 0, "OutPortPublisher - no out port published" );
                mPublishedOutPort->ConnectToIn( in );
                in.SetVisuallyConnectedOutPort( this );
                mVisuallyConnectedPorts.push_back(&in);
        }
        
        void PublishOutPort( OutPortBase & out )
        {
                try
                {
                        ConcretePublishOutPort( dynamic_cast<ProperOutPort&>(out) );
                } catch (...) // could be std::bad_cast ?
                {
                        CLAM_ASSERT( false,
                        "OutPortPublisher<Token>::PublishOutPort coudn't connect to outPort "
                        "because was not templatized by the same Token type as OutPortPublisher" );
                }

        }
        void UnpublishOutPort()
        {
                mPublishedOutPort = 0;
        }
        void ConcretePublishOutPort( ProperOutPort & out )
        {
                mPublishedOutPort = &out;
                out.SetPublisher( *this );
        }
        
        void DisconnectFromIn( InPortBase& in)
        {
                CLAM_ASSERT(mPublishedOutPort, "OutPortPublisher::DisconnectFromIn() A published port is missing. "
                                "Consider using the method PublishOutPort( OutPortBase& out) ");
                mPublishedOutPort->DisconnectFromIn( in );
                mVisuallyConnectedPorts.remove(&in);
        }
        
        bool IsConnectableTo(InPortBase & in)
        {
                CLAM_ASSERT(mPublishedOutPort, "OutPortPublisher::IsConnectableTo() A published port is missing. "
                                "Consider using the method PublishOutPort( OutPortBase& out) ");
                return mPublishedOutPort->IsConnectableTo( in );
        }
        
        bool IsVisuallyConnectedTo(InPortBase & in)
        {
                CLAM_ASSERT(mPublishedOutPort, "OutPortPublisher:IsVisuallyConnectedTo() A published port is missing. "
                                "Consider using the method PublishOutPort( OutPortBase& out) ");
                return mPublishedOutPort->IsVisuallyConnectedTo( in );
        }
        
        Token & GetData(int offset=0)
        {
                CLAM_ASSERT(mPublishedOutPort, "OutPortPublisher::GetData() A published port is missing. "
                                "Consider using the method PublishOutPort( OutPortBase& out) ");
                return mPublishedOutPort->GetData( offset );
        }
        
        int GetSize()
        {
                CLAM_ASSERT(mPublishedOutPort, "OutPortPublisher::GetSize() A published port is missing. "
                                "Consider using the method PublishOutPort( OutPortBase& out) ");
                return mPublishedOutPort->GetSize();
        }
        
        void SetSize(int newSize)
        {
                CLAM_ASSERT(mPublishedOutPort, "OutPortPublisher::SetSize() A published port is missing. "
                                "Consider using the method PublishOutPort( OutPortBase& out) ");
                mPublishedOutPort->SetSize( newSize );
        }
        
        int GetHop()
        {
                CLAM_ASSERT(mPublishedOutPort, "OutPortPublisher::GetHop() A published port is missing. "
                                "Consider using the method PublishOutPort( OutPortBase& out) ");
                return mPublishedOutPort->GetHop();
        }
        
        void SetHop(int newHop)
        {
                CLAM_ASSERT(mPublishedOutPort, "OutPortPublisher::SetHop() A published port is missing. "
                                "Consider using the method PublishOutPort( OutPortBase& out) ");
                mPublishedOutPort->SetHop( newHop );
        }

        
        bool CanProduce()
        {
                CLAM_ASSERT(mPublishedOutPort, "OutPortPublisher::CanProduce() A published port is missing. "
                                "Consider using the method PublishOutPort( OutPortBase& out) ");
                return mPublishedOutPort->CanProduce();
        }       
        
        void CenterEvenRegions()
        {
                CLAM_ASSERT(mPublishedOutPort, "OutPortPublisher::CenterEvenRegions() A published port is missing. "
                                "Consider using the method PublishOutPort( OutPortBase& out) ");
                mPublishedOutPort->CenterEvenRegions();
        }
        Token & GetLastWrittenData( int offset = 0 )
        {
                return OutPort<Token>::GetLastWrittenData( *mPublishedOutPort, offset );
        }

        static Token & GetLastWrittenData( OutPortBase &, int offset = 0);
        virtual const std::type_info & GetTypeId() const 
        {
                return typeid(Token);
        };

        
protected:
        ProperOutPort * mPublishedOutPort;
};

template<class Token>
Token & OutPortPublisher<Token>::GetLastWrittenData( OutPortBase & out, int offset )
{
        try
        {
                OutPortPublisher<Token>& concreteOut = dynamic_cast< OutPortPublisher<Token>& >(out);
                return concreteOut.GetLastWrittenData( offset );
        }
        catch(...)
        {
                CLAM_ASSERT( false, "OutPortPublisher<Token>::DumpDataWithLastToken - Passed an outport of wrong type" );
        }
        return *(Token *)NULL;
                
}




} // namespace CLAM

#endif // __OutPortPublisher_hxx__

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