Add test output for phones

packages/qr-code-scanner/src/qr-code-scanner.js

@@ -62,6 +62,10 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
 
             const that = this;
 
+
+            if (navigator.mediaDevices
+                && navigator.mediaDevices.enumerateDevices
+                && navigator.mediaDevices.getUserMedia) {
                 navigator.mediaDevices.enumerateDevices()
                     .then(function (devices) {
                         devices.forEach(function (device) {
@@ -69,7 +73,6 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
                                 " id = " + device.deviceId);
                             that._("#error").innerText += " | id: " + device.deviceId + " label: " + device.label + " | ";
                             if (device.kind === 'videoinput') {
-                            // TODO Übersetzen
                                 let id = device.deviceId;
                                 if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
                                     devices_map.set('environment', i18n.t('back-camera'));
@@ -82,8 +85,7 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
                         if (devices_map.size < 1) {
                             that.notSupported = true;
                         }
-                    for (let [id, label] of devices_map)
-                    {
+                        for (let [id, label] of devices_map) {
                             let opt = document.createElement("option");
                             opt.value = id;
                             opt.text = label;
@@ -95,6 +97,29 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
                         console.log(err.name + ": " + err.message);
                         that.notSupported = true;
                     });
+            } else if (MediaStreamTrack && MediaStreamTrack.getSources) {
+                this._log("MediaStreamTrack.getSources used");
+                const callback = sourceInfos => {
+                    const results = [];
+                    for (let i = 0; i !== sourceInfos.length; ++i) {
+                        const sourceInfo = sourceInfos[i];
+                        that._("#error").innerText += " * kind: " + sourceInfo.kind + " id: " + sourceInfo.id + " label: " + sourceInfo.label + " * ";
+                        if (sourceInfo.kind === 'video') {
+                            devices_map.set(sourceInfo.id ? sourceInfo.id : true, sourceInfo.label || i18n.t('camera') + (devices_map.size + 1))
+                            results.push({
+                                id: sourceInfo.id,
+                                label: sourceInfo.label
+                            });
+                        }
+                    }
+                    this._log(`${results.length} results found`);
+                    resolve(results);
+                }
+                MediaStreamTrack.getSources(callback);
+            }
+            else {
+                that.notSupported = true;
+            }