Label Capture Session
Defined in framework ScanditLabelCapture
- SDCLabelCaptureSession
@interface SDCLabelCaptureSession : NSObject
Added in version 6.0.0
Holds the ongoing state of capturing data contained in one or more labels. An instance of this class is passed to SDCLabelCaptureListener.labelCapture:didUpdateSession:frameData: when new labels are captured, or existing labels are updated or lost.
Important
The capture session should only be accessed from within labelCapture:didUpdateSession:frameData: to which it is provided as an argument. It is not safe to be accessed from anywhere else since it may be concurrently modified.
Specifically no reference to capturedLabels should be kept and traversed outside of labelCapture:didUpdateSession:frameData:. Instead a copy of the list should be made to avoid concurrent modification. The individual labels can be referenced without copying as they are not further modified.
- capturedLabels
@property (nonatomic, nonnull, readonly) NSArray<SDCCapturedLabel *> *capturedLabels
Added in version 6.0.0
List of currently captured labels.
- lastProcessedFrameId
@property (nonatomic, readonly) NSInteger lastProcessedFrameId
Added in version 6.0.0
The identifier of the last processed frame.
- frameSequenceId
@property (nonatomic, readonly) NSInteger frameSequenceId
Added in version 6.1.0
The identifier of the current frame sequence.
Important
As long as there is no interruptions of frames coming from the camera, the frameSequenceId will stay the same, whereas the lastProcessedFrameId will be incremented for every processed frame.