Controller.hxx

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/*
 * Copyright (c) 2001-2004 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
 *
 */

// TokenDelay_example.cxx
// example for the TokenDelay processing object

#ifndef _Controller_
#define _Controller_

#include "OutControl.hxx"
#include "OutControlArray.hxx"
#include "Processing.hxx"
#include "ProcessingData.hxx"

#include <typeinfo> // for bad_cast definition
#include <string>
#include <vector>
#include <queue>

#include "Mutex.hxx"

namespace CLAM {


class ControllerConfig : public ProcessingConfig
{
public:
        DYNAMIC_TYPE_USING_INTERFACE (ControllerConfig, 3, ProcessingConfig);
        DYN_ATTRIBUTE          (0, public, unsigned, NumControls);
        DYN_CONTAINER_ATTRIBUTE (1, public, std::vector<TControlData>, MinValues, foo);
        DYN_CONTAINER_ATTRIBUTE (2, public, std::vector<TControlData>, MaxValues, foo);
protected:
        void DefaultInit(void)
        {
                AddAll();
                UpdateData();
                SetNumControls(0);
        }
};

class Controller : public Processing
{
public:
        Controller ();
        Controller(const ControllerConfig& c)
        {
                Configure(c);
        }

        const char *GetClassName() const {return "Controller";}

        bool Do()
        {       
                IdxList::iterator ListIt;               

                Mutex::ScopedLock lock( mControllerDoMutex );
                
                IdxList qs = getQueues();
                
                if (!qs.empty())
                        {
                                for (ListIt=qs.begin();ListIt!=qs.end() ;ListIt++ )
                                        {
                                                TControlData val = PopControl( (*ListIt) );
                                                OutControls[(*ListIt)].SendControl(val);
                                                OutValues[(*ListIt)] = val;
                                        }
                        }
                
                
                return true;
        }
        
        const ProcessingConfig&  GetConfig() const;
        virtual bool ConcreteConfigure(const ProcessingConfig&);
        
        

        void EnqueueControl(unsigned id, TControlData data);
        TControlData LastDequeuedValue(unsigned id);

        OutControlArray OutControls;
        std::vector<TControlData> OutValues;
private:
        ControllerConfig mConfig;
        // private methods
        TControlData PopControl(unsigned id);
        bool Empty(unsigned id);
        // implementation details
        typedef std::queue<TControlData> TQueue;
        typedef std::list<int> IdxList;
        
        std::vector<TQueue> mDataQueues;

        void BufferQueueInit( int ncontrols );

        IdxList getQueues()
        {
                IdxList modifiedQs;
                std::vector<TQueue>::iterator it;

                int k = 0;
                for (it=mDataQueues.begin(); it != mDataQueues.end() ; it++ )
                {
                        if (!(*it).empty())
                        {
                                modifiedQs.push_back(k);
                        }
                        k++;
                }
                
                return modifiedQs;
        }
        Mutex mDataMutex;
        Mutex mControllerDoMutex;
};
}; // namespace CLAM

#endif // _Controller_