SoByteStream.h

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/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Author      : David Mott (MMM yyyy)
**=======================================================================*/
/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
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 ***                        BORDEAUX, FRANCE                                        ***
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_BYTE_STREAM_
#define  _SO_BYTE_STREAM_
 
#include <Inventor/SbBasic.h>
 
class SoNode;
class SoPath;
class SoPathList;
 
//
//  Class: SoByteStream
//
//  This class creates a byte stream representation of a scene graph,
//  using the SoWriteAction to write to an in memory buffer. Byte streams
//  are commonly used to transfer data, for instance during copy and paste.
//
 
class  SoByteStream {
 public:
  SoByteStream();
  ~SoByteStream();
 
  void                convert(SoNode *node, SbBool binaryFormat = TRUE);
    
  void                convert(SoPath *path, SbBool binaryFormat = TRUE);
    
  void                convert(SoPathList *pathList, SbBool binaryFormat = TRUE);
 
  void *              getData()       { return data; }
  size_t/*uint32_t*/                  getNumBytes()   { return numBytes; }
    
  // Unconvert a byte stream back to a path list.
  // This static routine performs an SoDB::read on the data,
  // and returns a path list of the paths read in.
    
  static SoPathList *unconvert(SoByteStream *byteStream);
  static SoPathList *unconvert(void *data, size_t numBytes);
  
 private:
  // This allows apps to store raw data here without converting 
  // an Inventor node, path, or path list. This sets isRaw to TRUE,
  // and that data cannot be unconverted.
  void                copy(void *d, size_t len);
  SbBool              isRawData() const { return isRaw; }
     
 private:
  void                *data;
  size_t numBytes;
  SbBool              isRaw;
 
};
 
#endif // _SO_BYTE_STREAM_