示例#1
0
NodeTransitPtr SceneFileHandlerBase::read(
          std::istream &is,
    const Char8        *fileNameOrExtension,
          GraphOpSeq   *graphOpSeq         ,       
          Resolver      resolver           )
{
    SceneFileType *type  = getFileType(fileNameOrExtension);
    NodeUnrecPtr   scene = NULL;

    if(!fileNameOrExtension)
    {
        SWARNING << "cannot read NULL extension" << std::endl;
        return NodeTransitPtr(scene);
    }

    if(type != NULL)
    {
        SINFO << "try to read stream as " << type->getName() << std::endl;

        // check for fileio read callback
        if(_readFP != NULL)
        {
            initReadProgress(is);
            scene = _readFP(type, is, fileNameOrExtension);
            terminateReadProgress();
        }
        else
        {
            if(isGZip(is))
            {
                SINFO << "Detected gzip compressed stream." << std::endl;

#ifdef OSG_WITH_ZLIB

                initReadProgress(is);

                zip_istream unzipper(is);

                scene = type->read(unzipper, 
                                   fileNameOrExtension, 
                                   resolver ? resolver : _oGlobalResolver);

                if(scene != NULL)
                {
                    if(unzipper.check_crc() == true)
                    {
                        SINFO << "Compressed stream has correct checksum."
                              << std::endl;
                    }
                    else
                    {
                        SWARNING << "Compressed stream has wrong checksum."
                                 << std::endl;
                    }
                }
                terminateReadProgress();
#else
                SFATAL << "Compressed streams are not supported! Configure "
                       << "with --enable-png --with-png=DIR options."
                       << std::endl;
#endif
            }
            else
            {
                initReadProgress(is);

                scene = type->read(is, 
                                   fileNameOrExtension, 
                                   resolver  ? resolver : _oGlobalResolver);

                terminateReadProgress();
            }
        }

        if(scene != NULL)
        {
            if(graphOpSeq != NULL)
                graphOpSeq->traverse(scene);

            SINFO    << "read ok:"        << std::endl;
        }
        else
        {
            SWARNING << "could not read " << std::endl;
        }
    }
    else
    {
        SWARNING << "could not read unknown file format" << std::endl;
    }

    commitChanges();

    return NodeTransitPtr(scene);
}
示例#2
0
NodePtr SceneFileHandler::read(std::istream &is, const Char8* fileNameOrExtension,
                               GraphOpSeq *graphOpSeq)
{
    SceneFileType *type = getFileType(fileNameOrExtension);
    NodePtr        scene = NullFC;

    if(!fileNameOrExtension)
    {
        SWARNING << "cannot read NULL extension" << std::endl;
        return NullFC;
    }

    if (type)
    {
        SINFO << "try to read stream as " << type->getName() << std::endl;

        // check for fileio read callback
        if(_readFP != NULL)
        {
            initReadProgress(is);
            scene = _readFP(type, is, fileNameOrExtension);
            terminateReadProgress();
        }
        else
        {
            if(isGZip(is))
            {
                SINFO << "Detected gzip compressed stream." << std::endl;

#ifdef OSG_ZSTREAM_SUPPORTED
                initReadProgress(is);
                zip_istream unzipper(is);
                scene = type->read(unzipper, fileNameOrExtension);
                if(scene != NullFC)
                {
                    if(unzipper.check_crc())
                        SINFO << "Compressed stream has correct checksum." << std::endl;
                    else
                        SFATAL << "Compressed stream has wrong checksum." << std::endl;
                }
                terminateReadProgress();
#else
                SFATAL << "Compressed streams are not supported! Configure with --enable-png --with-png=DIR options." << std::endl;
#endif
            }
            else
            {
                initReadProgress(is);
                scene = type->read(is, fileNameOrExtension);
                terminateReadProgress();
            }
        }

        if(scene != NullFC)
        {
            if(graphOpSeq != NULL)
                graphOpSeq->run(scene);

            SINFO    << "read ok:"        << std::endl;
        }
        else
        {
            SWARNING << "could not read " << std::endl;
        }
    }
    else
    {
        SWARNING << "could not read unknown file format" << std::endl;
    }

    return scene;
}