Apple

3.) Customize the decoding function that the fcpxml documentation refers to (see Security Transforms Basics). Now the Base64 decoder function looks like this:

NSData *base64StringDecode(NSString *string){

const char *sourceCString = [string UTF8String];

SecTransformRef decoder;

CFDataRef sourceData = NULL, decodedData = NULL;

CFErrorRef error = NULL;

// Create a CFData object for the source C string.

sourceData = CFDataCreate(kCFAllocatorDefault,(const unsigned char *)sourceCString,(strlen(sourceCString) + 1));

// Create the transform objects

decoder = SecDecodeTransformCreate(kSecBase64Encoding, &error);

if (error) { CFShow(error); exit(-1); }

// Tell the decode transform to get its input from the encodedData object.

SecTransformSetAttribute(decoder, kSecTransformInputAttributeName,sourceData, &error);

if (error) { CFShow(error); exit(-1); }

// Execute the decode transform.

decodedData = SecTransformExecute(decoder, &error);

if (error) { CFShow(error); exit(-1); }

CFRelease(decoder);

return (NSData *)decodedData;

}

4.) So here is where it outputs errors:

// pass the <bookmark> NSString to the decoder function

NSData *decodedBookmark = base64StringDecode(bookmarkString);

// generate a security-soped URL

NSURL *sourceURL = [NSURL URLByResolvingBookmarkData:decodedBookmark options:NSURLBookmarkResolutionWithSecurityScope relativeToURL:clipURL bookmarkDataIsStale:nil error:&error];

But the sourceURL stays nil. If I log decodedBookmark, I get a lot of hexadeciml data. If I NSLog the &error I get this:

Error Domain=NSCocoaErrorDomain Code=256 "The file “mymoviefile.mov” couldn’t be opened." UserInfo=0x1019b7250 {NSURL=file://localhost/Volumes/xxx/Final Cut Events/xx/Original Media/mymoviefile.mov}

So here is the big question: what am I doing wrong? Did I missed something? Is the base64 decoding bad? Why is URLByResolvingBookmarkData: not generating a NSURL?

I´m frustrated and need some help.

Thomas