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storybase.hh

Go to the documentation of this file.

/*
 * PIAVE - PIAVE Is A Video Editor
 *
 * Copyright (C) 2002 Rolf Dubitzky, rolf@dubitzky.de
 *
 */

/*
 * 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.
 */


#if ! defined ( STORYBASE_HH )
#define STORYBASE_HH

// std
#include <iostream>
#include <string>

// piave
#include "piave_base.hh"
#include "avstream.hh"
#include "frame.hh"
#include "property.hh"

namespace PIAVE {

    class UnaryOp;
    class BinaryOp;

    class StoryElement : public TimeInterval
    {
      public:
        StoryElement( const std::string &name = std::string(), Time start = 0, Time length = 0 ); 
        virtual ~StoryElement() {};

        const std::string & name() const { return _name; } 
        const std::string & setName( const std::string &name ) { 
            _name = name; return _name; } 
        const std::string & comment() const { return _comment; } 
        const std::string & setComment( const std::string &comment ) { 
            _comment = comment; return _comment; } 

        virtual int fixMe( int fix_lvl=0 ) { 
            WARN( "ABSTRACT! OVERRIDE ME! StoryElement::fixMe "<<name() ); return 0; };

      private:
        std::string _name;
        std::string _comment;
    };
    

    class MediaElement : public StoryElement , public PluginBase
    {
      public:
        MediaElement( const std::string &name = std::string(), 
                      Time start = 0, Time length = 0 );
        virtual ~MediaElement() {};

        virtual Frame getFrame( Time t ) = 0;
    };

    class StoryBNode : public MediaElement
    {
      public:
        StoryBNode( MediaElement * A,
                    MediaElement * B,
                    BinaryOp     * videoOp = 0,
                    BinaryOp     * audioOp = 0 );

        // override
        virtual Frame getFrame( Time t );
        virtual PropertyNode * getProperties( PropertyNode *p  = 0 ) const { return p; }
        virtual int fixMe( int fix_lvl=0 );

        virtual void print( std::ostream & o, int indent ) const;

      private:
        MediaElement    * _A;
        MediaElement    * _B;
        BinaryOp        * _videoOp;
        BinaryOp        * _audioOp;

    };

    class StoryUNode : public MediaElement
    {
      public:
        StoryUNode( MediaElement * A,
                    UnaryOp      * videoOp = 0,
                    UnaryOp      * audioOp = 0 );

        //
        virtual Frame getFrame( Time t );
        virtual PropertyNode * getProperties( PropertyNode *p  = 0 ) const { return p; }
        virtual int fixMe( int fix_lvl=0 );

        virtual void print( std::ostream & o, int indent ) const;

      private:
        MediaElement  * _A;
        UnaryOp       * _videoOp;
        UnaryOp       * _audioOp;
    };


    class StorySeqNode : public MediaElement
    {
      public:
        StorySeqNode( );
        virtual ~StorySeqNode( );

        //
        void setEmptyFrame( MediaElement * m ) { _emptyFrame=m; }
        void addElement( MediaElement * m );

        //
        virtual Frame getFrame( Time t );
        virtual PropertyNode * getProperties( PropertyNode *p  = 0 ) const { return p; }
        virtual int fixMe( int fix_lvl=0 );
        virtual void print( std::ostream & o, int indent ) const;

      private:
        std::vector< MediaElement* >  _elements;
        MediaElement * _emptyFrame;
        
    };


    class StoryBoard : public MediaElement
    {
      public:
        StoryBoard( const std::string name );
        virtual ~StoryBoard();

        MediaElement * getEmptyFrame() const { return _emptyFrame; }

        virtual Frame getFrame( Time t );
        
        virtual PropertyNode * getProperties( PropertyNode * p  = 0 ) const;

        virtual int fixMe( int fix_lvl=0 ) { return 0; };

        virtual void print( std::ostream & o, int indent ) const;

        void setHead( MediaElement * s );
        
        void printStats();

      private:
        MediaElement * _head;
        MediaElement * _emptyFrame;
        // stats
        int _nMeasuredFrames;
        double _sumMean;
        double _sumSquares;
        double _fastestFrame;
        double _slowestFrame;
     };

};

#endif

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