Memory leak ZXBinaryBitmap and ZXQRCodeReader.

[andrioli]

I think there is a memory leak at ZXBinaryBitmap and ZXQRCodeReader.

Im capturing video frames as in http://developer.apple.com/library/ios/#qa/qa1702/_index.html.

And after acquire a 'CGImageRef' I crop the image to select the area that should contain the code. Finally delegate ZXingObjC to decode the image:

ZXLuminanceSource* source = [[ZXCGImageLuminanceSource alloc] initWithCGImage:image];
ZXBinaryBitmap* bitmap = [ZXBinaryBitmap binaryBitmapWithBinarizer:[ZXHybridBinarizer binarizerWithSource:source]];

NSError* error = nil;
ZXResult* result = [self.reader decode:bitmap hints:self.hints error:&error];

if i use 'setSampleBufferDelegate:queue' in a main queue works fine, but my animeted button on the screen looks very lagged. After create a new queue the leak appeared.

Reducing the frame rate i'm able to execute

ZXBinaryBitmap* bitmap = [ZXBinaryBitmap binaryBitmapWithBinarizer:[ZXHybridBinarizer binarizerWithSource:source]];

But the leak remains in ZXQRCodeReader's decode:hints:error: method

[andrioli]

after a search on stackoverflow and on iOS doc I found that wrapping the code with @autorealesepool solves this problem.