1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17(function () {
18    "use strict";
19
20    navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia;
21    window.URL = window.URL || window.webkitURL;
22
23    document.addEventListener('DOMContentLoaded', function () {
24
25        var video = document.querySelector('#video'),
26            toggle = document.querySelector('#toggle'),
27            stream = null;
28
29        if (!navigator.getUserMedia) {
30            console.error('getUserMedia not supported');
31        }
32
33        toggle.addEventListener('click', function () {
34            if (null === stream) {
35                // This call to "getUserMedia" initiates a PermissionRequest in the WebView.
36                navigator.getUserMedia({ video: true }, function (s) {
37                    stream = s;
38                    video.src = window.URL.createObjectURL(stream);
39                    toggle.innerText = 'Stop';
40                    console.log('Started');
41                }, function (error) {
42                    console.error('Error starting camera. Denied.');
43                });
44            } else {
45                if (stream.getTracks) {
46                    stream.getTracks().forEach(function (track) {
47                        track.stop();
48                    });
49                } else if (stream.stop) {
50                    stream.stop();
51                }
52                stream = null;
53                toggle.innerText = 'Start';
54                console.log('Stopped');
55            }
56        });
57
58        console.log('Page loaded');
59
60    });
61
62})();
63