Is it okay to burn a bd-r disc with FsiFileSystemJoliet using IMAPI2?

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VC6

VC7.0

C++

MFC

HI ,

I know that Multisession using UDF filesystem is not supported in Windows Xp.so I choose Joliet to archive Multisession on bd -r disc.

I also know that Joliet filesystem requirs the file to be burned must be little than 4G. I am not sure if i can use Joliet on Bd- r because the capacity of the bd -r is 25G/50G.



code:

IMAPI_MEDIA_PHYSICAL_TYPE mediaType = IMAPI_MEDIA_TYPE_UNKNOWN;
discFormatData.GetInterface()->get_CurrentPhysicalMediaType(&mediaType);
// mediatype is BDR
image->ChooseImageDefaultsForMediaType(mediaType);

//Instead of the default UDF filesystem,using Joliet to archieve the multisession on xp
hr = image->put_FileSystemsToCreate((FsiFileSystems)(FsiFileSystemJoliet|FsiFileSystemISO9660));

VARIANT_BOOL vbBlank ;
discFormatData.GetInterface()->get_MediaHeuristicallyBlank(&vbBlank);



if(vbBlank == VARIANT_TRUE)
{
    BSTR bstrFileName = strFileName.AllocSysString();
    image->put_VolumeName(bstrFileName);
    SysFreeString(bstrFileName);


}
else
{
    SAFEARRAY *pSafeArrayMulSection = NULL;
    HRESULT hrTemp = discFormatData.GetInterface()->get_MultisessionInterfaces(&pSafeArrayMulSection);
    if(!SUCCEEDED(hrTemp))
    {

        return FALSE;
    }

    if(SUCCEEDED(hrTemp))
    {

        VARIANT *va = NULL ;
        SafeArrayAccessData(pSafeArrayMulSection,(VOID**)&va);
        if(va)
        {
            IMultisession *pMultisession = NULL ;
            pMultisession = (IMultisession*)va[0].pdispVal;
            hr = pMultisession->put_InUse(VARIANT_TRUE);
            if(!SUCCEEDED(hr))
            {
                ::OspPrintf(TRUE,TRUE,"ERROR:Multiple session Inuse failed\n");
            }
        }
        hrTemp = image->put_MultisessionInterfaces(pSafeArrayMulSection);
        if (!SUCCEEDED(hrTemp))
        {
            ::OspPrintf(TRUE,TRUE,"put_MultisessionInterfaces Failed ! Code: OX%08x",hrTemp);
            ::OspPost(MAKEIID(CDBURN_APP_ID,1),BURN_MULTISESSION_ERROR,&tParam,sizeof(TParam),0);
            return FALSE;
        }

        FsiFileSystems fs;
        hr = image->GetDefaultFileSystemForImport((FsiFileSystems)(FsiFileSystemJoliet|FsiFileSystemISO9660),&fs);

        FsiFileSystems filesystem ;
        hrTemp = image->ImportFileSystem(&filesystem);
        if(!SUCCEEDED(hrTemp))
        {

            return FALSE;
        }
    }// getmultisession
    SafeArrayDestroy(pSafeArrayMulSection);


}
LONG lFreeSectorOnMedia = 0;
hr = discFormatData.GetInterface()->get_FreeSectorsOnMedia(&lFreeSectorOnMedia);
if(SUCCEEDED(hr))
{
// lFreeSectorOnMedia is about 50G in byts ,could I set the FreeMediaBlocks property of Image which uses Joliet filesystem, so large?
    hr = image->put_FreeMediaBlocks(lFreeSectorOnMedia);
}