retriever.js
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"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.CameraRetriever = void 0;
var strings_1 = require("../strings");
var CameraRetriever = (function () {
function CameraRetriever() {
}
CameraRetriever.retrieve = function () {
if (navigator.mediaDevices) {
return CameraRetriever.getCamerasFromMediaDevices();
}
var mst = MediaStreamTrack;
if (MediaStreamTrack && mst.getSources) {
return CameraRetriever.getCamerasFromMediaStreamTrack();
}
return CameraRetriever.rejectWithError();
};
CameraRetriever.rejectWithError = function () {
var errorMessage = strings_1.Html5QrcodeStrings.unableToQuerySupportedDevices();
if (!CameraRetriever.isHttpsOrLocalhost()) {
errorMessage = strings_1.Html5QrcodeStrings.insecureContextCameraQueryError();
}
return Promise.reject(errorMessage);
};
CameraRetriever.isHttpsOrLocalhost = function () {
if (location.protocol === "https:") {
return true;
}
var host = location.host.split(":")[0];
return host === "127.0.0.1" || host === "localhost";
};
CameraRetriever.getCamerasFromMediaDevices = function () {
return __awaiter(this, void 0, void 0, function () {
var closeActiveStreams, mediaStream, devices, results, _i, devices_1, device;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
closeActiveStreams = function (stream) {
var tracks = stream.getVideoTracks();
for (var _i = 0, tracks_1 = tracks; _i < tracks_1.length; _i++) {
var track = tracks_1[_i];
track.enabled = false;
track.stop();
stream.removeTrack(track);
}
};
return [4, navigator.mediaDevices.getUserMedia({ audio: false, video: true })];
case 1:
mediaStream = _a.sent();
return [4, navigator.mediaDevices.enumerateDevices()];
case 2:
devices = _a.sent();
results = [];
for (_i = 0, devices_1 = devices; _i < devices_1.length; _i++) {
device = devices_1[_i];
if (device.kind === "videoinput") {
results.push({
id: device.deviceId,
label: device.label
});
}
}
closeActiveStreams(mediaStream);
return [2, results];
}
});
});
};
CameraRetriever.getCamerasFromMediaStreamTrack = function () {
return new Promise(function (resolve, _) {
var callback = function (sourceInfos) {
var results = [];
for (var _i = 0, sourceInfos_1 = sourceInfos; _i < sourceInfos_1.length; _i++) {
var sourceInfo = sourceInfos_1[_i];
if (sourceInfo.kind === "video") {
results.push({
id: sourceInfo.id,
label: sourceInfo.label
});
}
}
resolve(results);
};
var mst = MediaStreamTrack;
mst.getSources(callback);
});
};
return CameraRetriever;
}());
exports.CameraRetriever = CameraRetriever;
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