I'd like to use iOS 7's new barcode scanning functionality with a UIImage
instead of live capture from one of the device's camera. I already have the detection working fine with an AVCaptureDeviceInput
.
The best way I think to do this would be to create a concrete subclass of AVCaptureInput
that provides media data to an AVCaptureSession
from a UIImage
. However, I can't find any documentation or examples on how to subclass AVCaptureInput
, so I'm at a loss.
An alternative would be to override the media stream from an existing AVCaptureDeviceInput
, but since those API's are private and I'd like to publish my app on the App Store, this isn't ideal.
Ultimately, I'll likely end up doing this using a 3rd party barcode library like ZXing or ZBar, but it seems like a waste to not be able to use Apple's built-in functionality here.