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No results from the scanner on > iOS 14

See original GitHub issue

The scanning functionality of Quagga stopped working. I tried different aspectRatios and different configurations regarding the camera selection without any success.

The camera selection, on the other hand, and general implementation work fine – the stream starts without any issues. No barcodes (ean_code) are recognized though.

Android works without any issues.

 const QuaggaInit = () => {
        Quagga.init(
            {
                inputStream: {
                    type: "LiveStream",
                    constraints: {
                        width: {
                            min: 450
                        },
                        height: {
                            min: 300
                        },
                        deviceId: selectedDevice ? selectedDevice : "default",
                        facingMode: "environment",
                        /*aspectRatio: {
                            "min": 1,
                            "max": 2
                        }*/
                    }
                },
                locator: {
                    "patchSize": "medium",
                    "halfSample": true
                },
                numOfWorkers: 2,
                frequency: 10,
                decoder: {
                    readers: [
                        "ean_reader",
                    ]
                },
                locate: true
            }, err => {
                if (err) {
                    console.log(err, "error msg");
                }
                Quagga.start();
                return () => {
                    Quagga.stop()
                }
            });
    }

    React.useEffect(() => {
        getDevices();
        checkPermissions();
        Quagga.onProcessed(result => {
            var drawingCtx = Quagga.canvas.ctx.overlay,
                drawingCanvas = Quagga.canvas.dom.overlay;

            if (result) {
                if (result.boxes) {
                    drawingCtx.clearRect(
                        0,
                        0,
                        Number(drawingCanvas.getAttribute("width")),
                        Number(drawingCanvas.getAttribute("height"))
                    );
                    result.boxes
                        .filter(function (box) {
                            return box !== result.box;
                        })
                        .forEach(function (box) {
                            Quagga.ImageDebug.drawPath(box, { x: 0, y: 1 }, drawingCtx, {
                                color: "green",
                                lineWidth: 2
                            });
                        });
                }

                if (result.box) {
                    Quagga.ImageDebug.drawPath(result.box, { x: 0, y: 1 }, drawingCtx, {
                        color: "#00F",
                        lineWidth: 2
                    });
                }

                if (result.codeResult && result.codeResult.code) {
                    Quagga.ImageDebug.drawPath(
                        result.line,
                        { x: "x", y: "y" },
                        drawingCtx,
                        { color: "red", lineWidth: 3 }
                    );
                }
            }
        });

        Quagga.onDetected(detected);

    }, []);

    const detected = result => {
        onDetected(result.codeResult.code);
    };

Test device: iPhone 12 Pro