Line data    Source code

       1             : 
       2             : /* Copyright (c) 2009-2013, Stefan Eilemann <eile@equalizergraphics.com>
       3             :  *
       4             :  * This library is free software; you can redistribute it and/or modify it under
       5             :  * the terms of the GNU Lesser General Public License version 2.1 as published
       6             :  * by the Free Software Foundation.
       7             :  *
       8             :  * This library is distributed in the hope that it will be useful, but WITHOUT
       9             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      10             :  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
      11             :  * details.
      12             :  *
      13             :  * You should have received a copy of the GNU Lesser General Public License
      14             :  * along with this library; if not, write to the Free Software Foundation, Inc.,
      15             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      16             :  */
      17             : 
      18             : #ifndef EQS_DFREQUALIZER_H
      19             : #define EQS_DFREQUALIZER_H
      20             : 
      21             : #include "../channelListener.h" // base class
      22             : #include "equalizer.h"          // base class
      23             : 
      24             : #include <deque>
      25             : #include <map>
      26             : 
      27             : namespace eq
      28             : {
      29             : namespace server
      30             : {
      31             : std::ostream& operator<<(std::ostream& os, const DFREqualizer*);
      32             : 
      33             : /** Tries to maintain a constant frame rate by adapting the compound zoom.*/
      34             : class DFREqualizer : public Equalizer, protected ChannelListener
      35             : {
      36             : public:
      37             :     DFREqualizer();
      38             :     virtual ~DFREqualizer();
      39           8 :     void toStream(std::ostream& os) const final { os << this; }
      40             :     /** @sa Equalizer::attach */
      41             :     void attach(Compound* compound) final;
      42             : 
      43             :     /** @sa CompoundListener::notifyUpdatePre */
      44             :     void notifyUpdatePre(Compound* compound, const uint32_t frameNumber) final;
      45             : 
      46             :     /** @sa ChannelListener::notifyLoadData */
      47             :     void notifyLoadData(Channel* channel, uint32_t frameNumber,
      48             :                         const Statistics& statistics,
      49             :                         const Viewport& region) final;
      50             : 
      51           0 :     uint32_t getType() const final { return fabric::DFR_EQUALIZER; }
      52             : protected:
      53          20 :     void notifyChildAdded(Compound*, Compound*) override {}
      54           0 :     void notifyChildRemove(Compound*, Compound*) override {}
      55             : private:
      56             :     float _current;    //!< Framerate of the last finished frame
      57             :     int64_t _lastTime; //!< Last frames' timestamp
      58             : };
      59             : }
      60             : }
      61             : 
      62             : #endif // EQS_DFREQUALIZER_H