lightweight_barcode_scanner library
A lightweight, fully offline barcode and QR scanner.
Camera frames are analysed by a shared ZXing-C++ core inside the native camera pipeline; Flutter only ever receives the decoded results. No machine learning runtime, no network access, no image data leaves the device.
Classes
- BarcodeCapture
- Everything that came out of one analysed frame.
- BarcodeResult
- A single decoded barcode.
- BarcodeScanner
- Decodes barcodes from still images.
- BarcodeScannerController
- Owns one camera session and the native decoder attached to it.
- BarcodeScannerView
- Displays the camera preview and reports detections.
- ScannerOptions
- Immutable scanner configuration.
- ScannerPreview
- What the native side tells us about the running camera.
Enums
- AutoZoom
- Which platforms the auto zoom ramp runs on.
- BarcodeFormat
- Barcode symbologies this package can decode.
- BarcodeScannerErrorCode
- Why a scanner operation failed.
- CameraFacing
- Which camera to open.
- CameraPermissionStatus
- Result of a camera permission request.
- DecoderProfile
- How much work the decoder is allowed to do per frame.
- ImagePixelFormat
-
Pixel layouts accepted by BarcodeScanner.decodePixels, mirroring
LbsPixelFormatinsrc/lbs_ffi.h. - ScanMode
- What the scanner does after a successful detection.
- ScannerState
- Lifecycle of a BarcodeScannerController.
- ScanResolution
- Analysis resolution.
Exceptions / Errors
- BarcodeScannerException
-
Thrown by the controller and reported through
controller.error.