dfrEqualizer.h

/* Copyright (c) 2009, Stefan Eilemann <eile@equalizergraphics.com> 
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *  
 * This library 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 Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef EQS_DFREQUALIZER_H
#define EQS_DFREQUALIZER_H

#include "../channelListener.h" // base class
#include "equalizer.h"       // base class

#include <deque>
#include <map>

namespace eq
{
namespace server
{
    class DFREqualizer;
    std::ostream& operator << ( std::ostream& os, const DFREqualizer* );

    class DFREqualizer : public Equalizer, protected ChannelListener
    {
    public:
        DFREqualizer();
        virtual ~DFREqualizer();
        virtual Equalizer* clone() const { return new DFREqualizer( *this ); }
        virtual void toStream( std::ostream& os ) const { os << this; }

        void setFrameRate( const float frameRate ) { _target = frameRate; }

        float getFrameRate() const{ return _target; }

        void setDamping( const float damping ) { _damping = damping; }

        float getDamping() const { return _damping; }

        virtual void attach( Compound* compound );

        virtual void notifyUpdatePre( Compound* compound, 
                                      const uint32_t frameNumber );
        
        virtual void notifyLoadData( Channel* channel, 
                                     const uint32_t frameNumber,
                                     const uint32_t nStatistics,
                                     const eq::Statistic* statistics  );

    protected:
        virtual void notifyChildAdded( Compound* compound, Compound* child ){}
        virtual void notifyChildRemove( Compound* compound, Compound* child ){}

    private:
        float _target; 
        float _damping; 

        float _current; 
        int64_t _lastTime; 
    };

}
}

#endif // EQS_DFREQUALIZER_H