H3DVideoClipDecoderNode.h

Go to the documentation of this file.

//    Copyright 2004, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API 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.
//
//    H3D API 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 H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __H3DVIDEOCLIPDECODERNODE_H__
#define __H3DVIDEOCLIPDECODERNODE_H__

#include "Node.h"
#include "Image.h"
#include <list>

namespace H3D {

  class H3DAPI_API H3DVideoClipDecoderNode : public Node {
  protected:
    typedef enum {
      PLAYING = 0,
      STOPPED = 1,
      PAUSED = 2 
    } PlayStatus;

  public:
    typedef H3DVideoClipDecoderNode*( *CreateNodeFunc)(); 

    typedef bool ( *SupportsFileFunc)( const string &url ); 
    
    template< class N >
    static H3DVideoClipDecoderNode *newImageLoaderNode() { return new N; };

    struct H3DAPI_API DecoderRegistration{
    public:
      DecoderRegistration( const string &_name,
                           CreateNodeFunc _create, 
                           SupportsFileFunc _supports ):
      name( _name ),
      create_func( _create ),
      supports_func( _supports ) {
                  
        if( !H3DVideoClipDecoderNode::initialized ) {
          H3DVideoClipDecoderNode::registered_decoders = 
            new list< DecoderRegistration >;
          initialized = true;
        }
        H3DVideoClipDecoderNode::registerDecoder( *this );
      }

      string name;
      CreateNodeFunc create_func;
      SupportsFileFunc supports_func;
    };

    H3DVideoClipDecoderNode():
      status( STOPPED ) {
      type_name = "H3DVideoClipDecoderNode";
    }

    virtual bool loadClip( const string &url ) = 0;

    virtual bool haveNewFrame() = 0;

    virtual void getNewFrame( unsigned char *buffer ) = 0;

    virtual unsigned int getFrameSize() = 0;

    virtual unsigned int getFrameWidth() = 0;

    virtual unsigned int getFrameHeight() = 0;

    virtual Image::PixelType getFramePixelType() = 0;

    virtual Image::PixelComponentType getFramePixelComponentType() = 0;

    virtual unsigned int getFrameBitsPerPixel() = 0;

    virtual void startPlaying() = 0;

    virtual void stopPlaying() = 0;

    virtual void pausePlaying() = 0;

    virtual void setLooping( bool on ) = 0;

    virtual H3DTime getPosition() = 0;
    
    virtual void setPosition( H3DTime pos ) = 0;

    virtual bool setRate( double r ) = 0;

    virtual H3DTime getDuration() = 0;

    inline PlayStatus getPlayStatus() { return status; }

    virtual string defaultXMLContainerField() {
      return "decoder";
    }
    
    static H3DVideoClipDecoderNode *getSupportedDecoder( const string &url );

    static void registerDecoder( const string &name,
                                    CreateNodeFunc create, 
                                    SupportsFileFunc supports ) {
      registerDecoder( DecoderRegistration( name, create, supports ) );
    }

    static void registerDecoder( const DecoderRegistration &fr ) {
      registered_decoders->push_back( fr );
    }

  protected:
    static list< DecoderRegistration > *registered_decoders;
    static bool initialized;
    PlayStatus status;
  };
}

#endif

---