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main.js
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main.js
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'use strict';
var videoElement = document.querySelector('video');
var audioSelect = document.querySelector('select#audioSource');
var videoSelect = document.querySelector('select#videoSource');
navigator.getUserMedia = navigator.getUserMedia ||
navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
function gotSources(sourceInfos) {
for (var i = 0; i !== sourceInfos.length; ++i) {
var sourceInfo = sourceInfos[i];
var option = document.createElement('option');
option.value = sourceInfo.id;
if (sourceInfo.kind === 'audio') {
option.text = sourceInfo.label || 'microphone ' + (audioSelect.length + 1);
audioSelect.appendChild(option);
} else if (sourceInfo.kind === 'video') {
option.text = sourceInfo.label || 'camera ' + (videoSelect.length + 1);
videoSelect.appendChild(option);
} else {
console.log('Some other kind of source: ', sourceInfo);
}
}
}
if (typeof MediaStreamTrack.getSources === 'undefined'){
alert('This browser does not support MediaStreamTrack.\n\nTry Chrome Canary.');
} else {
MediaStreamTrack.getSources(gotSources);
}
function successCallback(stream) {
window.stream = stream; // make stream available to console
videoElement.src = window.URL.createObjectURL(stream);
videoElement.play();
}
function errorCallback(error){
console.log('navigator.getUserMedia error: ', error);
}
function start(){
if (!!window.stream) {
videoElement.src = null;
window.stream.stop();
}
var audioSource = audioSelect.value;
var videoSource = videoSelect.value;
var constraints = {
audio: {
optional: [{sourceId: audioSource}]
},
video: {
optional: [{sourceId: videoSource}]
}
};
navigator.getUserMedia(constraints, successCallback, errorCallback);
}
audioSelect.onchange = start;
videoSelect.onchange = start;
start();