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| /* global _ */
import Ember from 'ember';
const { Mixin, RSVP, computed, run } = Ember;
const UA = window.navigator.userAgent.toLowerCase();
const IS_CHROME = !!window && !!window.chrome && !!window.chrome.webstore;
const IS_FIREFOX = window && typeof InstallTrigger !== 'undefined';
let BROWSER_VERSION;
Eif (IS_CHROME) {
BROWSER_VERSION = UA.match(/chrom(e|ium)/) && parseInt(UA.match(/chrom(e|ium)\/([0-9]+)\./)[2], 10);
} else if (IS_FIREFOX) {
BROWSER_VERSION = parseInt(UA.match(/firefox\/([0-9]+)\./)[1], 10);
}
export default Mixin.create({
// options
fullHd: false,
canListDevices: false,
// camera and video stuff
hasCameraPermission: false,
cameraList: Ember.A(),
hasCamera: computed('cameraList.[]', function () {
return !!_.find(this.get('cameraList'), (camera) => camera.deviceId !== 'default');
}),
// mic and audio stuff
hasMicPermission: false,
microphoneList: Ember.A(),
hasMicrophone: computed.notEmpty('microphoneList'),
callCapable: computed.and('audioCallCapable', 'videoCallCapable'),
audioCallCapable: computed(function () {
const PC = window.RTCPeerConnection;
const gUM = window.navigator && window.navigator.mediaDevices && window.navigator.mediaDevices.getUserMedia;
const supportWebAudio = window.AudioContext && window.AudioContext.prototype.createMediaStreamSource;
const support = !!(PC && gUM && supportWebAudio);
return support;
}),
videoCallCapable: computed('audioCallCapable', function () {
const audioCallCapable = this.get('audioCallCapable');
Iif (!audioCallCapable) {
return false;
}
const videoEl = document.createElement('video');
const supportVp8 = videoEl && videoEl.canPlayType && videoEl.canPlayType('video/webm; codecs="vp8", vorbis') === 'probably';
Iif (!supportVp8) {
return false;
}
return true;
}),
outputDeviceList: Ember.A(),
resolutionList: Ember.A(),
canShareScreen: computed.reads('callCapable'),
enumerationTimer: null,
// Returns a promise which resolves when all devices have been enumerated and loaded
init () {
this._super(...arguments);
const timer = run.next(this, function () {
this.enumerateDevices();
this.enumerateResolutions();
});
this.set('enumerationTimer', timer);
this.lookup = this.lookup || ((key) => key);
},
willDestroy () {
const timer = this.get('enumerationTimer');
if (timer) {
run.cancel(timer);
}
this._super(...arguments);
},
updateDefaultDevices (/* devices */) {
throw new Error('updateDefaultDevices should be overridden - do you need to save preferences or change video stream?');
},
enumerateResolutions () {
const resolutions = this.get('resolutionList');
resolutions.pushObject(Ember.Object.create({
label: this.lookup('webrtcDevices.resolutions.low').toString(),
presetId: 1,
constraints: {
video: {
width: { max: 320 },
height: { max: 240 }
}
}
}));
resolutions.pushObject(Ember.Object.create({
label: this.lookup('webrtcDevices.resolutions.medium').toString(),
presetId: 2,
constraints: {
video: {
width: { max: 640 },
height: { max: 480 }
}
}
}));
const hd = Ember.Object.create({
label: this.lookup('webrtcDevices.resolutions.high').toString(),
presetId: 3,
constraints: {
video: {
width: {
min: 640,
ideal: 1280,
max: 1920
},
height: {
min: 480,
ideal: 720,
max: 1080
}
}
}
});
resolutions.pushObject(hd);
// full hd is disabled by default because very few computers actually support this
Iif (this.get('fullHd')) {
resolutions.pushObject(Ember.Object.create({
label: this.lookup('webrtcDevices.resolutions.fullHd').toString(),
presetId: 4,
constraints: {
video: {
width: { exact: 1920 },
height: { exact: 1080 }
}
}
}));
}
return resolutions;
},
enumerateDevices () {
Iif (!window.navigator.mediaDevices || !window.navigator.mediaDevices.enumerateDevices) {
return;
}
let cameraCount = 0;
let microphoneCount = 0;
let outputDeviceCount = 0;
const cameras = [];
const microphones = [];
const outputDevices = [];
const defaultDevice = {
deviceId: 'default',
label: this.lookup('webrtcDevices.default').toString()
};
const addCamera = (device, hasBrowserLabel) => {
Eif (!hasBrowserLabel) {
device.label = device.label || this.lookup('webrtcDevices.cameraLabel', {number: ++cameraCount}).toString();
}
this.set('hasCameraPermission', this.get('hasCameraPermission') || hasBrowserLabel);
cameras.push(Ember.Object.create(device));
};
const addMicrophone = (device, hasBrowserLabel) => {
if (!hasBrowserLabel) {
device.label = device.label || this.lookup('webrtcDevices.microphoneLabel', {number: ++microphoneCount}).toString();
}
this.set('hasMicPermission', this.get('hasMicPermission') || hasBrowserLabel);
microphones.push(Ember.Object.create(device));
};
const addOutputDevice = (device, hasLabel) => {
if (!window.HTMLMediaElement.prototype.hasOwnProperty('setSinkId')) {
return;
}
if (!hasLabel) {
device.label = this.lookup('webrtcDevices.outputDeviceLabel', {number: ++outputDeviceCount}).toString();
}
outputDevices.push(Ember.Object.create(device));
};
// always add a dummy default for video, since the browser doesn't give us one like microphone
Eif (this.get('callCapable')) {
addCamera(defaultDevice, false);
}
return window.navigator.mediaDevices.enumerateDevices().then((devices) => {
if (IS_FIREFOX && BROWSER_VERSION < 42) {
this.set('canListDevices', false);
addMicrophone(defaultDevice);
} else {
this.set('canListDevices', true);
this.setProperties({
hasCameraPermission: false,
hasMicPermission: false
});
devices.forEach((device) => {
const deviceInfo = {
deviceId: device.deviceId,
label: device.label
};
const hasLabel = !_.isEmpty(device.label);
if (device.kind === 'audioinput') {
addMicrophone(deviceInfo, hasLabel);
} else if (device.kind === 'audiooutput') {
addOutputDevice(deviceInfo, hasLabel);
} else if (device.kind === 'videoinput') {
addCamera(deviceInfo, hasLabel);
}
});
}
this.setProperties({
cameraList: Ember.A(cameras),
microphoneList: Ember.A(microphones),
outputDeviceList: Ember.A(outputDevices)
});
}).catch(err => {
Ember.Logger.error(err);
this.set('canListDevices', false);
addMicrophone(defaultDevice);
});
},
setOutputDevice (el, device) {
Iif (!(device && device.deviceId)) {
return RSVP.Promise.reject('Cannot set null device');
}
const outputDevice = this.get('outputDeviceList').findBy('deviceId', device.deviceId);
Eif (!outputDevice) {
return RSVP.Promise.reject('Cannot set output device: device not found');
}
if (typeof el.setSinkId !== 'undefined') {
return new RSVP.Promise(function (resolve) {
if (el.paused) {
el.onplay = () => resolve();
} else {
resolve();
}
}).then(function () {
el.setSinkId(device.deviceId);
}).then(() => {
Ember.Logger.log('successfully set audio output device');
}).catch((err) => {
Ember.Logger.error('failed to set audio output device', err);
});
} else {
Ember.Logger.error('attempted to set sink id in unsupported browser');
return RSVP.Promise.reject('Not supported');
}
},
setDefaultOutputDevice (el) {
const device = this.get('defaultOutputDevice');
if (device) {
return this.setOutputDevice(el, this.get('defaultOutputDevice'));
}
return RSVP.Promise.resolve();
}
});
|