kCVPixelBufferPoolFreeBufferNotification
A notification that the system posts if a buffer becomes available after it fails to create a pixel buffer with auxiliary attributes because it exceeded the threshold you specified.
Declaration
let kCVPixelBufferPoolFreeBufferNotification: CFStringDiscussion
The system posts this notification if a buffer becomes available after the CVPixelBufferPoolCreatePixelBufferWithAuxAttributes(_:_:_:_:) function fails because the system exceeds the threshold you set for the kCVPixelBufferPoolAllocationThresholdKey key. The system won’t post this notification if you don’t set a value for the kCVPixelBufferPoolAllocationThresholdKey key for the auxAttributes parameter of the CVPixelBufferPoolCreatePixelBufferWithAuxAttributes(_:_:_:_:) function.