I am attempting to write a LabWindows program that uses the IMAPI2 Active-X libraries to burn recordable CDs. The program runs fine when I use a blank CD-R, but when I subsequently attempt to burn another session on the same disc, only the files from the first session are visible in Windows. I can view the files from all the burn sessions using IsoBuster so I know they're present on the disc.
I'm using Windows 7 Pro, which should be compatible with all types of media for IMAPI2. I know the discs are not the problem because using Windows Explorer to do the multisession burn works fine.
My code is attached.
Rich Ferrara
#include <userint.h>
#include <imapi2.h>
#include <imapi2error.h>
#include <imapi2fs.h>
#include <ansi_c.h>
#include <toolbox.h>
#include <imapi2fserror.h>
#include "imapi2ActiveX.h"
#include "imapi2FsActiveX.h"
#include "archives_defs.h"
// Master control object for all drives
static CAObjHandle discMaster;
// Arrays of drive handles and information (names, letters, media types)
static CAObjHandle *cdDriveHandles;
static char **cdDriveNames;
static char **cdDrivePaths;
static MediaType **cdDriveMedia;
static IMAPI2FSType_IStream cdImageStream;
// Number of recordable drives present in the system
static long numDrives;
int main(void)
{
CmtThreadFunctionID threadId;
int status;
InitializeCdDrives();
BurnCd(cdDriveHandles[0], IMAPI2FSConst_IMAPI_MEDIA_TYPE_CDR);
MessagePopup("cd burn", "done");
CleanUpCdDriveMemory();
return 0;
}
int InitializeCdDrives(void)
{
HRESULT result;
SAFEARRAY *safeArrayPtr;
CAObjHandle format;
VARIANT *varArray;
MediaType *media;
size_t numElements;
long index;
int i;
char *str;
int error = E_CVIAUTO_NO_ERROR;
// Read the number of CD/DVD drives in the system
errChk(IMAPI2_NewIDiscMaster2 (NULL, 1, LOCALE_NEUTRAL, 0, &discMaster));
errChk(IMAPI2_IDiscMaster2GetCount (discMaster, NULL, &numDrives));
// Allocate memory to hold lists of CD/DVD drive information
cdDriveNames = malloc(numDrives * (int)sizeof(char *));
cdDriveHandles = malloc(numDrives * (int)sizeof(CAObjHandle));
cdDrivePaths = malloc(numDrives * (int)sizeof(char *));
cdDriveMedia = malloc(numDrives * (int)sizeof(MediaType *));
nullChk(cdDriveNames);
nullChk(cdDriveHandles);
nullChk(cdDrivePaths);
nullChk(cdDriveMedia);
for (index=0; index<numDrives; ++index)
{
// Read a CD drive device name
errChk(IMAPI2_IDiscMaster2GetItem (discMaster, NULL, index,
&cdDriveNames[index]));
// Set up a handle for this device
errChk(IMAPI2_NewIDiscRecorder2 (NULL, 1, LOCALE_NEUTRAL, 0,
&cdDriveHandles[index]));
errChk(IMAPI2_IDiscRecorder2InitializeDiscRecorder (
cdDriveHandles[index], NULL, cdDriveNames[index]));
// Get the device's drive letter
errChk(IMAPI2_IDiscRecorder2GetVolumePathNames (cdDriveHandles[index],
NULL, &safeArrayPtr));
errChk(CA_SafeArrayTo1DArrayEx (&safeArrayPtr, CAVT_VARIANT, 0, &varArray,
&numElements));
errChk(CA_VariantGetCString (&varArray[0], &cdDrivePaths[index]));
CA_FreeMemory(varArray);
// Get the media types supported by this device
errChk(IMAPI2_NewIDiscFormat2Data (NULL, 1, LOCALE_NEUTRAL, 0,
&format));
errChk(IMAPI2_IDiscFormat2DataSetRecorder (format, NULL,
cdDriveHandles[index]));
errChk(IMAPI2_IDiscFormat2DataGetSupportedMediaTypes (format, NULL,
&safeArrayPtr));
errChk(CA_SafeArrayTo1DArrayEx (&safeArrayPtr, CAVT_VARIANT, 0, &varArray,
&numElements));
cdDriveMedia[index] = malloc(numElements * (int)sizeof(long));
media = cdDriveMedia[index];
for (i=0; i<numElements; ++i)
{
errChk(CA_VariantGetLong (&varArray[i], (long *)&media[i]));
}
CA_FreeMemory(varArray);
}
Error:
return error;
}
int BurnCd(CAObjHandle drive, MediaType media)
{
IMAPI2FSObj_IFileSystemImageResult resultImage;
IMAPI2FSObj_IFsiDirectoryItem root;
enum IMAPI2FSEnum_FsiFileSystems fileSystem;
CAObjHandle discFormat;
CAObjHandle image;
SAFEARRAY *multiSession = NULL;
VBOOL blank;
int error = E_CVIAUTO_NO_ERROR;
// Lock the disc drive
errChk(IMAPI2_IDiscRecorder2AcquireExclusiveAccess (drive, NULL,
VTRUE, "RDP-PLATE"));
// Set up the CD file system
errChk(IMAPI2_NewIDiscFormat2Data (NULL, 1, LOCALE_NEUTRAL, 0,
&discFormat));
errChk(IMAPI2_IDiscFormat2DataSetRecorder (discFormat, NULL, drive));
errChk(IMAPI2_IDiscFormat2DataSetClientName (discFormat, NULL,
"RDP-PLATE"));
// Set up the disc file system
errChk(IMAPI2FS_NewIFileSystemImage3 (NULL, 1, LOCALE_NEUTRAL, 0,
&image));
// Is the disc blank?
errChk(IMAPI2_IDiscFormat2GetMediaPhysicallyBlank (discFormat, NULL,
&blank));
if (blank == VTRUE)
{
// Set up a new blank file system
errChk(IMAPI2FS_IFileSystemImage3ChooseImageDefaults (image,
NULL, drive));
}
else
{
// Retrieve the folder structure already on the disc
errChk(IMAPI2_IDiscFormat2DataGetMultisessionInterfaces (discFormat,
NULL, &multiSession));
errChk(IMAPI2FS_IFileSystemImage3SetMultisessionInterfaces (
image, NULL, multiSession));
errChk(IMAPI2FS_IFileSystemImage3ImportFileSystem (
image, NULL, &fileSystem));
}
// Get the image root
errChk(IMAPI2FS_IFileSystemImage3GetRoot (image, NULL, &root));
// Add files
errChk(IMAPI2FS_IFsiDirectoryItemAddTree (root, NULL, "c:\\rich\\fizz",
VTRUE));
// Create the result image and stream
errChk(IMAPI2FS_IFileSystemImage3CreateResultImage (image, NULL,
&resultImage));
errChk(IMAPI2FS_IFileSystemImageResultGetImageStream (resultImage,
NULL, &cdImageStream));
// Burn the disc
errChk(IMAPI2_IDiscFormat2DataWrite (discFormat, NULL, cdImageStream));
// Unlock the disc drive
errChk(IMAPI2_IDiscRecorder2ReleaseExclusiveAccess (drive, NULL));
Error:
printf ("cd burn status = %x\n", error);
return error;
}
void CleanUpCdDriveMemory(void)
{
int index;
for (index=0; index<numDrives; ++index)
{
free(cdDriveMedia[index]);
}
free(cdDriveMedia);
free(cdDrivePaths);
free(cdDriveHandles);
free(cdDriveNames);
}
