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/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
/*
* Copyright (C) 1990-95 Silicon Graphics, Inc.
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.2 $
|
| Classes:
| SoByteStream
|
| Authors: David Mott
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#include <stdlib.h>
#include <Inventor/misc/SoByteStream.h>
#include <Inventor/SoDB.h>
#include <Inventor/SoInput.h>
#include <Inventor/SoLists.h>
#include <Inventor/SoOutput.h>
#include <Inventor/SoPath.h>
#include <Inventor/actions/SoWriteAction.h>
#include <Inventor/errors/SoDebugError.h>
#include <Inventor/nodes/SoSeparator.h>
//////////////////////////////////////////////////////////////////////////////
//
// Constructor
//
// Use: public
//
SoByteStream::SoByteStream()
//
//////////////////////////////////////////////////////////////////////////////
{
data = NULL;
numBytes = 0;
isRaw = FALSE;
}
//////////////////////////////////////////////////////////////////////////////
//
// Destructor
//
// Use: public
//
SoByteStream::~SoByteStream()
//
//////////////////////////////////////////////////////////////////////////////
{
if (data != NULL)
free(data);
}
//////////////////////////////////////////////////////////////////////////////
//
// Description:
// Convert the passed path list to a byte stream.
// binaryFormat determines whether to copy the data in binary (TRUE) or
// ascii (FALSE) format.
//
// Use: public
//
void
SoByteStream::convert(SoPathList *pathList, SbBool binaryFormat)
//
//////////////////////////////////////////////////////////////////////////////
{
// clear out any old data
if (data != NULL) {
free(data);
data = NULL;
numBytes = 0;
}
if ((pathList == NULL) || (pathList->getLength() == 0))
return;
// Write all the paths in the path list into an in-memory buffer
SoWriteAction wa;
SoOutput *out = wa.getOutput();
out->setBinary(binaryFormat);
out->setBuffer(malloc(128), 128, realloc);
for (int i = 0; i < pathList->getLength(); i++) {
wa.apply((*pathList)[i]);
}
// Point to the byte stream data
void *buf;
size_t size;
out->getBuffer(buf, size);
data = buf;
numBytes = (uint32_t) size;
isRaw = FALSE;
}
//////////////////////////////////////////////////////////////////////////////
//
// Description:
// Convert the passed path to a byte stream.
// binaryFormat determines whether to copy the data in binary (TRUE) or
// ascii (FALSE) format.
//
// Use: public
//
void
SoByteStream::convert(SoPath *path, SbBool binaryFormat)
//
//////////////////////////////////////////////////////////////////////////////
{
SoPathList pathList;
pathList.append(path);
convert(&pathList, binaryFormat);
}
//////////////////////////////////////////////////////////////////////////////
//
// Description:
// Convert the passed node to a byte stream.
// binaryFormat determines whether to copy the data in binary (TRUE) or
// ascii (FALSE) format.
//
// Use: public
//
void
SoByteStream::convert(SoNode *node, SbBool binaryFormat)
//
//////////////////////////////////////////////////////////////////////////////
{
SoPath *path = new SoPath(node);
convert(path, binaryFormat);
}
//////////////////////////////////////////////////////////////////////////////
//
// Description:
// Convert the passed byte stream to a path list.
// The caller should delete the returned path list when done with it.
//
// Use: static, public
//
SoPathList *
SoByteStream::unconvert(SoByteStream *bs)
//
//////////////////////////////////////////////////////////////////////////////
{
if (bs->isRawData())
return NULL;
else return SoByteStream::unconvert(bs->getData(), bs->getNumBytes());
}
//////////////////////////////////////////////////////////////////////////////
//
// Description:
// Convert the passed byte stream to a path list.
// The caller should delete the returned path list when done with it.
//
// Use: static, public
//
SoPathList *
SoByteStream::unconvert(void *data, uint32_t numBytes)
//
//////////////////////////////////////////////////////////////////////////////
{
if (data == NULL) {
SoDebugError::post("SoByteStream::unconvert", "data is NULL");
return NULL;
}
if (numBytes == 0) {
SoDebugError::post("SoByteStream::unconvert", "numBytes is 0");
return NULL;
}
SoInput in;
SoPathList *pathList = new SoPathList;
SoPath *path = NULL;
in.setBuffer((void *) data, (size_t) numBytes);
// Try to read paths
while ((SoDB::read(&in, path) != FALSE) && (path != NULL))
pathList->append(path);
// If that failed, try reading the scene as a node
if (pathList->getLength() == 0) {
in.setBuffer((void *) data, (size_t) numBytes); // reset
SoSeparator *sep = SoDB::readAll(&in); // read again
if (sep != NULL) {
path = new SoPath(sep);
pathList->append(path);
}
}
return pathList;
}
//////////////////////////////////////////////////////////////////////////////
//
// Description:
// 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
SoByteStream::copy(void *d, size_t len)
//
//////////////////////////////////////////////////////////////////////////////
{
data = malloc(len);
if (data != NULL) {
memcpy(data, d, (int)len);
numBytes = len;
isRaw = TRUE;
}
}
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