SBSDKBarcodeScanner Class Reference


                    
                    
                    -init

Creates an SBSDKBarcodeScanner with no frame accumulator for detecting all supported barcode types

Declaration

Objective-C

- (nonnull instancetype)init;

Swift

init()


                    
                    
                    -initWithTypes:

Creates an SBSDKBarcodeScanner with no frame accumulator for detecting only the given barcode types

Declaration

Objective-C

- (nonnull instancetype)initWithTypes:
    (nonnull NSArray<SBSDKBarcodeType *> *)barCodeTypes;

Swift

init(types barCodeTypes: [SBSDKBarcodeType])

Parameters


                                barCodeTypes

Bar code types to limit detection results to.


                    
                    
                    -initWithFrameAccumulator:types:

Creates an SBSDKBarcodeScanner that accumulates multiple frames before returning a detection result. The barcode scanner’s detect* methods will return empty results until they’ve been called the given number of times. Then, they will perform detection on the frame with the least amount of blur. Intended for using with live detection.

Declaration

Objective-C

- (nonnull instancetype)
    initWithFrameAccumulator:(NSInteger)accumulatedFrames
                       types:
                           (nonnull NSArray<SBSDKBarcodeType *> *)barCodeTypes;

Swift

init(frameAccumulator accumulatedFrames: Int, types barCodeTypes: [SBSDKBarcodeType])

Parameters

`accumulatedFrames`	Number of frames to accumulate before running detection on the sharpest one.
`barCodeTypes`	Bar code types to limit detection results to.


                    
                    
                    -detectBarCodesOnImage:

Search and decode specified types of bar codes on given image. Strong recommendation is to use this method with static image barcode detection and not live detection. The reason is that video stream returns rotated image, so for example for portrait device orientation, every frame returned will be in landscape left orientation. This method does not handle this orientation difference. For live detection using detectBarCodesOnImage:orientation:inRect: or detectBarCodesOnSampleBuffer:orientation:inRect: is more preferable.

Declaration

Objective-C

- (nullable NSArray<SBSDKBarcodeScannerResult *> *)detectBarCodesOnImage:
    (nonnull UIImage *)image;

Swift

func detectBarCodes(on image: UIImage) -> [SBSDKBarcodeScannerResult]?

Parameters


                                image

The image where search is to be done.

Return Value

List of found barcodes.


                    
                    
                    -detectBarCodesOnImage:inRect:

Search and decode specified types of bar codes on given image. Strong recommendation is to use this method with static image barcode detection and not live detection. The reason is that video stream returns rotated image, so for example for portrait device orientation, every frame returned will be in landscape left orientation. This method does not handle this orientation difference. For live detection using detectBarCodesOnImage:orientation:inRect: or detectBarCodesOnSampleBuffer:orientation:inRect: is more preferable.

Declaration

Objective-C

- (nullable NSArray<SBSDKBarcodeScannerResult *> *)
    detectBarCodesOnImage:(nonnull UIImage *)image
                   inRect:(CGRect)rect;

Swift

func detectBarCodes(on image: UIImage, in rect: CGRect) -> [SBSDKBarcodeScannerResult]?

Parameters

`image`	The image where search is to be done.
`rect`	Rectangle in image coordinates in which to perform the search. Must be inside the image.

Return Value

List of found barcodes.


                    
                    
                    -detectBarCodesOnImage:orientation:inRect:

Search and decode specified types of bar codes on given image. This function is intended to be used use with live detection. Video stream from device returns a rotated image, so for example for portrait device orientation, every frame returned will be in landscape left orientation. This function handles these orientation differences, so you shouldn’t fix or rotate the input image.

Declaration

Objective-C

- (nullable NSArray<SBSDKBarcodeScannerResult *> *)
    detectBarCodesOnImage:(nonnull UIImage *)image
              orientation:(AVCaptureVideoOrientation)videoOrientation
                   inRect:(CGRect)rect;

Swift

func detectBarCodes(on image: UIImage, orientation videoOrientation: AVCaptureVideoOrientation, in rect: CGRect) -> [SBSDKBarcodeScannerResult]?

Parameters

`image`	The image where search is to be done.
`videoOrientation`	Video frame orientation. Should be the orientation that the device currently has, not actual image orientation.
`rect`	Rectangle in image coordinates in which to perform the search. Must be within the image frame.

Return Value

List of found barcodes.


                    
                    
                    -detectBarCodesOnSampleBuffer:orientation:

Search and decode specified types of bar codes from sample buffer reference. This function is intended to be used with live detection. Video stream from device returns a rotated image, so for example for portrait device orientation, every frame returned will be in landscape left orientation. This function handles these orientation differences, so you shouldn’t fix or rotate the input buffer. Keep in mind, that the buffer received from the video stream is handled by the system. So in some cases it might be cleaned or changed by the system before recognition occurs. You may convert the buffer to UIImage upon receiving it and use detectBarCodesOnImage:orientation:inRect: function, if that is an issue.

Declaration

Objective-C

- (nullable NSArray<SBSDKBarcodeScannerResult *> *)
    detectBarCodesOnSampleBuffer:(nonnull CMSampleBufferRef)sampleBuffer
                     orientation:(AVCaptureVideoOrientation)videoOrientation;

Swift

func detectBarCodes(on sampleBuffer: CMSampleBuffer, orientation videoOrientation: AVCaptureVideoOrientation) -> [SBSDKBarcodeScannerResult]?

Parameters

`sampleBuffer`	The sample buffer reference.
`videoOrientation`	Video frame orientation. Should be the orientation that the device currently has, not actual image orientation.

Return Value

List of found barcodes.


                    
                    
                    -detectBarCodesOnSampleBuffer:orientation:inRect:

Search and decode specified types of bar codes from sample buffer reference. This function is intended to be used with live detection. Video stream from device returns a rotated image, so for example for portrait device orientation, every frame returned will be in landscape left orientation. This function handles these orientation differences, so you shouldn’t fix or rotate the input buffer. Keep in mind, that the buffer received from the video stream is handled by the system. So in some cases it might be cleaned or changed by the system before recognition occurs. You may convert the buffer to UIImage upon receiving it and use detectBarCodesOnImage:orientation:inRect: function, if that is an issue.

Declaration

Objective-C

- (nullable NSArray<SBSDKBarcodeScannerResult *> *)
    detectBarCodesOnSampleBuffer:(nonnull CMSampleBufferRef)sampleBuffer
                     orientation:(AVCaptureVideoOrientation)videoOrientation
                          inRect:(CGRect)rect;

Swift

func detectBarCodes(on sampleBuffer: CMSampleBuffer, orientation videoOrientation: AVCaptureVideoOrientation, in rect: CGRect) -> [SBSDKBarcodeScannerResult]?

Parameters

`sampleBuffer`	The sample buffer reference.
`videoOrientation`	Video frame orientation. Should be the orientation that the device currently has, not actual image orientation.
`rect`	Rectangle in image coordinates in which to perform the search. Must be inside the image.

Return Value

List of found barcodes.


                    
                    
                    -showOutput:orientation:

This method is used only for debugging.

Declaration

Objective-C

- (nullable UIImage *)showOutput:(nonnull CMSampleBufferRef)sampleBuffer
                     orientation:(AVCaptureVideoOrientation)videoOrientation;

Swift

func showOutput(_ sampleBuffer: CMSampleBuffer, orientation videoOrientation: AVCaptureVideoOrientation) -> UIImage?


                    
                    
                    acceptedBarcodeTypes

Bar code types to limit detection results to. When nil or empty - all codes can be returned.

Declaration

Objective-C

@property (nonatomic, strong, readwrite, nullable)
    NSArray<SBSDKBarcodeType *> *acceptedBarcodeTypes;

Swift

var acceptedBarcodeTypes: [SBSDKBarcodeType]? { get set }


                    
                    
                    accumulatedFramesCount

Number of frames to accumulate before running detection on the sharpest one.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
    NSInteger accumulatedFramesCount;

Swift

var accumulatedFramesCount: Int { get set }


                    
                    
                    enableHighSensitivityMode

A parameter, that switches scanner to high sensitivity detection. Detects barcodes more often, but can have more false-positives results. Generally, it is recommended to set this parameter to false during live detection, but have it enabled for static image recognition. Default is false.

Declaration

Objective-C

@property (nonatomic, assign, unsafe_unretained, readwrite)
    BOOL enableHighSensitivityMode;

Swift

var enableHighSensitivityMode: Bool { get set }