Is a "CFRelease” needed if I am using CGImageSourceCreateWithData from a (__bridge)?

My question is very simple, I would like to know if the method "CGImageSourceCreateWithData" creates a new object copying the data I provide so that that I have to release it when I don't need it anymore, or if it just creates a reference to the data I already have so that if I release it I will lose this data (and possibly have bad access errors).

The issue is related to using (__bridge CFDataRef) as the source data. Which let's me use Core Foundation objects as toll-free in ARC mode.

Consider the following function (or method, not sure how it's called):

- (void)saveImageWithData:(NSData*)jpeg andDictionary:(NSDictionary*)dicRef andName:(NSString*)name

{

    [self setCapturedImageName:name];



    CGImageSourceRef  source ;



    // Notice here how I use __bridge

    source = CGImageSourceCreateWithData((__bridge CFDataRef)jpeg, NULL);



    CFStringRef UTI = CGImageSourceGetType(source); 



    NSMutableData *dest_data = [NSMutableData data];



    // And here I use it again

    CGImageDestinationRef destination = CGImageDestinationCreateWithData((__bridge CFMutableDataRef)dest_data,UTI,1,NULL);



    CGImageDestinationAddImageFromSource(destination,source,0, (__bridge CFDictionaryRef) dicRef);



    BOOL success = NO;

    success = CGImageDestinationFinalize(destination);



    if(!success) {

        NSLog(@"***Could not create data from image destination ***");

    }



    // This only saves to the disk

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 

    NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder

    NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:@"ARPictures"];



    NSError *error;

    if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])

        [[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error]; //Create folder



    NSString *fullPath = [dataPath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.jpg", name]]; //add our image to the path



    [dest_data writeToFile:fullPath atomically:YES];





    self.img = [[UIImage alloc] initWithData:dest_data]; 

    self.capturedImageData = [[NSData alloc] initWithData:dest_data];



    //This is what im not sure if i should use

    CFRelease(destination);

    CFRelease(source);



}

My concern is about memory leaks or dealocating things I should not.

Thanks