OpenVideo Documentation

Node.h

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/* ========================================================================
 * Copyright (C) 2005  Graz University of Technology
 *
 * This framework 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 framework 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 framework; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * For further information please contact Denis Kalkofen under
 * <kalkofen@icg.tu-graz.ac.at> or write to Denis Kalkofen,
 * Graz University of Technology, Inffeldgasse 16a, A8010 Graz,
 * Austria.
 * ========================================================================
 * PROJECT: OpenVideo
 * ======================================================================== */
 /* ======================================================================= */

#ifndef _NODEOV_H
#define _NODEOV_H

#include <openvideo/openVideo.h>

#include <vector>
#include <string>

#include <openvideo/PixelFormat.h>

namespace openvideo {
class State;
class OPENVIDEO_API Node
{
public:
    Node();

    virtual ~Node();

    virtual void initPixelFormats()=0;

    virtual bool validateCurrentPixelFormat();

    virtual const char*  getName();

    virtual void init();


    virtual void start();

    virtual void stop();

    virtual void process();

    virtual void postProcess();

    virtual void preProcess();

    virtual bool setParameter(std::string key, std::string value);

    openvideo::State* getState();


    void addOutput( openvideo::Node * output);

    void addInput( openvideo::Node * output);

    std::vector<openvideo::Node*>* getOutputs();

    std::vector<openvideo::Node*>* getInputs();

    int getInDegree();

    int getCurInDegree();

    void decCurInDegree();
    
    int getOutDegree();

    int getCurOutDegree();

    void decCurOutDegree();

    void resetCurInOutDegree();

    const char* getDefName();


    virtual const std::string& getTypeName() const  {  return typeName;  }


protected:
    std::vector<openvideo::Node*> outputs;

    std::vector<openvideo::Node*> inputs;

    openvideo::State *state;

    int curInDegree;

    int curOutDegree;

    std::string name;

    std::string typeName;


    std::string defName;

    std::vector<PIXEL_FORMAT> pixelFormats;

    PIXEL_FORMAT curPixelFormat;
};
} //namespace openvideo {

#endif

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