yomu library

Yomu - Pure Dart QR Code and Barcode Reader Library

A zero-dependency QR code and barcode decoding library for Dart and Flutter.

Quick Start

import 'package:yomu/yomu.dart';

// Create a YomuImage container
final image = YomuImage.rgba(bytes: imageBytes, width: 300, height: 300);

// Decode QR codes and all barcode formats
final result = Yomu.all.decode(image);
print(result.text);

// Decode QR codes only
final qrResult = Yomu.qrOnly.decode(image);

Main Classes

Yomu - The main entry point for QR code and barcode decoding
DecoderResult - Contains the decoded text and metadata
BarcodeScanner - Configuration for 1D barcode scanning
BarcodeResult - Contains the decoded barcode text and metadata

Exception Handling

All yomu-specific exceptions extend YomuException:

DetectionException - QR code/barcode detection failed
DecodeException - Data decoding failed
ReedSolomonException - Error correction failed

try {
  final image = YomuImage.rgba(bytes: imageBytes, width: 300, height: 300);
  final result = Yomu.all.decode(image);
} on YomuException catch (e) {
  print('Failed: ${e.message}');
}

Classes

BarcodeDecoder

Abstract base class for 1D barcode decoders.

BarcodeResult

1D Barcode decoder result.

BarcodeScanner

1D barcode scanner with configurable decoders.

CodabarDecoder

Codabar barcode decoder.

Code128Decoder

Code 128 barcode decoder.

Code39Decoder