416 lines
13 KiB
JavaScript
416 lines
13 KiB
JavaScript
import Screenshare from '/imports/api/screenshare';
|
|
import KurentoBridge from '/imports/api/screenshare/client/bridge';
|
|
import BridgeService from '/imports/api/screenshare/client/bridge/service';
|
|
import logger from '/imports/startup/client/logger';
|
|
import Auth from '/imports/ui/services/auth';
|
|
import AudioService from '/imports/ui/components/audio/service';
|
|
import MediaStreamUtils from '/imports/utils/media-stream-utils';
|
|
import ConnectionStatusService from '/imports/ui/components/connection-status/service';
|
|
import browserInfo from '/imports/utils/browserInfo';
|
|
|
|
const SCREENSHARE_MEDIA_ELEMENT_NAME = 'screenshareVideo';
|
|
|
|
const DEFAULT_SCREENSHARE_STATS_TYPES = [
|
|
'outbound-rtp',
|
|
'inbound-rtp',
|
|
];
|
|
|
|
const CONTENT_TYPE_CAMERA = "camera";
|
|
const CONTENT_TYPE_SCREENSHARE = "screenshare";
|
|
|
|
let _isSharingScreen = false;
|
|
const _isSharingDep = {
|
|
value: false,
|
|
tracker: new Tracker.Dependency(),
|
|
};
|
|
|
|
const _sharingContentTypeDep = {
|
|
value: false,
|
|
tracker: new Tracker.Dependency(),
|
|
};
|
|
|
|
const _cameraAsContentDeviceIdTypeDep = {
|
|
value: '',
|
|
tracker: new Tracker.Dependency(),
|
|
};
|
|
|
|
const isSharing = () => {
|
|
_isSharingDep.tracker.depend();
|
|
return _isSharingDep.value;
|
|
};
|
|
|
|
const setIsSharing = (isSharing) => {
|
|
if (_isSharingDep.value !== isSharing) {
|
|
_isSharingDep.value = isSharing;
|
|
_isSharingDep.tracker.changed();
|
|
}
|
|
};
|
|
|
|
const setSharingContentType = (contentType) => {
|
|
if (_sharingContentTypeDep.value !== contentType) {
|
|
_sharingContentTypeDep.value = contentType;
|
|
_sharingContentTypeDep.tracker.changed();
|
|
}
|
|
}
|
|
|
|
const getSharingContentType = () => {
|
|
_sharingContentTypeDep.tracker.depend();
|
|
return _sharingContentTypeDep.value;
|
|
};
|
|
|
|
const getCameraAsContentDeviceId = () => {
|
|
_cameraAsContentDeviceIdTypeDep.tracker.depend();
|
|
return _cameraAsContentDeviceIdTypeDep.value;
|
|
};
|
|
|
|
const setCameraAsContentDeviceId = (deviceId) => {
|
|
if (_cameraAsContentDeviceIdTypeDep.value !== deviceId) {
|
|
_cameraAsContentDeviceIdTypeDep.value = deviceId;
|
|
_cameraAsContentDeviceIdTypeDep.tracker.changed();
|
|
}
|
|
};
|
|
|
|
const _trackStreamTermination = (stream, handler) => {
|
|
if (typeof stream !== 'object' || typeof handler !== 'function') {
|
|
throw new TypeError('Invalid trackStreamTermination arguments');
|
|
}
|
|
let _handler = handler;
|
|
|
|
// Dirty, but effective way of checking whether the browser supports the 'inactive'
|
|
// event. If the oninactive interface is null, it can be overridden === supported.
|
|
// If undefined, it's not; so we fallback to the track 'ended' event.
|
|
// The track ended listener should probably be reviewed once we create
|
|
// thin wrapper classes for MediaStreamTracks as well, because we'll want a single
|
|
// media stream holding multiple tracks in the future
|
|
if (stream.oninactive !== undefined) {
|
|
if (typeof stream.oninactive === 'function') {
|
|
const oldHandler = stream.oninactive;
|
|
_handler = () => {
|
|
oldHandler();
|
|
handler();
|
|
};
|
|
}
|
|
stream.addEventListener('inactive', handler, { once: true });
|
|
} else {
|
|
const track = MediaStreamUtils.getVideoTracks(stream)[0];
|
|
if (track) {
|
|
track.addEventListener('ended', handler, { once: true });
|
|
if (typeof track.onended === 'function') {
|
|
const oldHandler = track.onended;
|
|
_handler = () => {
|
|
oldHandler();
|
|
handler();
|
|
};
|
|
}
|
|
track.onended = _handler;
|
|
}
|
|
}
|
|
};
|
|
|
|
const _isStreamActive = (stream) => {
|
|
const tracksAreActive = !stream.getTracks().some(track => track.readyState === 'ended');
|
|
|
|
return tracksAreActive && stream.active;
|
|
}
|
|
|
|
const _handleStreamTermination = () => {
|
|
screenshareHasEnded();
|
|
};
|
|
|
|
// A simplified, trackable version of isScreenBroadcasting that DOES NOT
|
|
// account for the presenter's local sharing state.
|
|
// It reflects the GLOBAL screen sharing state (akka-apps)
|
|
const isScreenGloballyBroadcasting = () => {
|
|
const screenshareEntry = Screenshare.findOne({ meetingId: Auth.meetingID, "screenshare.contentType": CONTENT_TYPE_SCREENSHARE },
|
|
{ fields: { 'screenshare.stream': 1 } });
|
|
|
|
return (!screenshareEntry ? false : !!screenshareEntry.screenshare.stream);
|
|
}
|
|
|
|
// A simplified, trackable version of isCameraContentBroadcasting that DOES NOT
|
|
// account for the presenter's local sharing state.
|
|
// It reflects the GLOBAL camera as content sharing state (akka-apps)
|
|
const isCameraAsContentGloballyBroadcasting = () => {
|
|
const cameraAsContentEntry = Screenshare.findOne({ meetingId: Auth.meetingID, "screenshare.contentType": CONTENT_TYPE_CAMERA },
|
|
{ fields: { 'screenshare.stream': 1 } });
|
|
|
|
return (!cameraAsContentEntry ? false : !!cameraAsContentEntry.screenshare.stream);
|
|
}
|
|
|
|
// when the meeting information has been updated check to see if it was
|
|
// screensharing. If it has changed either trigger a call to receive video
|
|
// and display it, or end the call and hide the video
|
|
const isScreenBroadcasting = () => {
|
|
const sharing = isSharing() && getSharingContentType() == CONTENT_TYPE_SCREENSHARE;
|
|
const screenshareEntry = Screenshare.findOne({ meetingId: Auth.meetingID, "screenshare.contentType": CONTENT_TYPE_SCREENSHARE },
|
|
{ fields: { 'screenshare.stream': 1 } });
|
|
const screenIsShared = !screenshareEntry ? false : !!screenshareEntry.screenshare.stream;
|
|
|
|
if (screenIsShared && isSharing) {
|
|
setIsSharing(false);
|
|
}
|
|
|
|
return sharing || screenIsShared;
|
|
};
|
|
|
|
// when the meeting information has been updated check to see if it was
|
|
// sharing camera as content. If it has changed either trigger a call to receive video
|
|
// and display it, or end the call and hide the video
|
|
const isCameraAsContentBroadcasting = () => {
|
|
const sharing = isSharing() && getSharingContentType() === CONTENT_TYPE_CAMERA;
|
|
const screenshareEntry = Screenshare.findOne({ meetingId: Auth.meetingID, "screenshare.contentType": CONTENT_TYPE_CAMERA },
|
|
{ fields: { 'screenshare.stream': 1 } });
|
|
const cameraAsContentIsShared = !screenshareEntry ? false : !!screenshareEntry.screenshare.stream;
|
|
|
|
if (cameraAsContentIsShared && isSharing) {
|
|
setIsSharing(false);
|
|
}
|
|
|
|
return sharing || cameraAsContentIsShared;
|
|
};
|
|
|
|
const screenshareHasAudio = () => {
|
|
const screenshareEntry = Screenshare.findOne({ meetingId: Auth.meetingID },
|
|
{ fields: { 'screenshare.hasAudio': 1 } });
|
|
|
|
if (!screenshareEntry) {
|
|
return false;
|
|
}
|
|
|
|
return !!screenshareEntry.screenshare.hasAudio;
|
|
}
|
|
|
|
const getBroadcastContentType = () => {
|
|
const screenshareEntry = Screenshare.findOne({meetindId: Auth.meedingID},
|
|
{ fields: { 'screenshare.contentType': 1} });
|
|
|
|
if (!screenshareEntry) {
|
|
// defaults to contentType: "camera"
|
|
return CONTENT_TYPE_CAMERA;
|
|
}
|
|
|
|
return screenshareEntry.screenshare.contentType;
|
|
}
|
|
|
|
const screenshareHasEnded = () => {
|
|
if (isSharing()) {
|
|
setIsSharing(false);
|
|
}
|
|
if (getSharingContentType() === CONTENT_TYPE_CAMERA) {
|
|
setCameraAsContentDeviceId('');
|
|
}
|
|
|
|
KurentoBridge.stop();
|
|
};
|
|
|
|
const getMediaElement = () => {
|
|
return document.getElementById(SCREENSHARE_MEDIA_ELEMENT_NAME);
|
|
}
|
|
|
|
const getMediaElementDimensions = () => {
|
|
const element = getMediaElement();
|
|
return {
|
|
width: element?.videoWidth ?? 0,
|
|
height: element?.videoHeight ?? 0,
|
|
};
|
|
};
|
|
|
|
const setVolume = (volume) => {
|
|
KurentoBridge.setVolume(volume);
|
|
};
|
|
|
|
const getVolume = () => KurentoBridge.getVolume();
|
|
|
|
const shouldEnableVolumeControl = () => {
|
|
const VOLUME_CONTROL_ENABLED = window.meetingClientSettings.public.kurento.screenshare.enableVolumeControl;
|
|
|
|
return VOLUME_CONTROL_ENABLED && screenshareHasAudio();
|
|
}
|
|
|
|
const attachLocalPreviewStream = (mediaElement) => {
|
|
const {isTabletApp} = browserInfo;
|
|
if (isTabletApp) {
|
|
// We don't show preview for mobile app, as the stream is only available in native code
|
|
return;
|
|
}
|
|
const stream = KurentoBridge.gdmStream;
|
|
if (stream && mediaElement) {
|
|
// Always muted, presenter preview.
|
|
BridgeService.screenshareLoadAndPlayMediaStream(stream, mediaElement, true);
|
|
}
|
|
};
|
|
|
|
const setOutputDeviceId = (outputDeviceId) => {
|
|
const screenShareElement = document.getElementById(SCREENSHARE_MEDIA_ELEMENT_NAME);
|
|
const sinkIdSupported = screenShareElement && typeof screenShareElement.setSinkId === 'function';
|
|
const srcStream = screenShareElement?.srcObject;
|
|
|
|
if (typeof outputDeviceId === 'string'
|
|
&& sinkIdSupported
|
|
&& screenShareElement.sinkId !== outputDeviceId
|
|
&& srcStream
|
|
&& srcStream.getAudioTracks().length > 0) {
|
|
try {
|
|
screenShareElement.setSinkId(outputDeviceId);
|
|
logger.debug({
|
|
logCode: 'screenshare_output_device_change',
|
|
extraInfo: {
|
|
newDeviceId: outputDeviceId,
|
|
},
|
|
}, `Screenshare output device changed: to ${outputDeviceId || 'default'}`);
|
|
} catch (error) {
|
|
logger.error({
|
|
logCode: 'screenshare_output_device_change_failure',
|
|
extraInfo: {
|
|
errorName: error.name,
|
|
errorMessage: error.message,
|
|
newDeviceId: outputDeviceId,
|
|
},
|
|
}, `Error changing screenshare output device - {${error.name}: ${error.message}}`);
|
|
}
|
|
}
|
|
};
|
|
|
|
const screenshareHasStarted = (isPresenter, options = {}) => {
|
|
// Presenter's screen preview is local, so skip
|
|
if (!isPresenter) {
|
|
viewScreenshare({ outputDeviceId: options.outputDeviceId });
|
|
}
|
|
};
|
|
|
|
const shareScreen = async (stopWatching, isPresenter, onFail, options = {}) => {
|
|
if (isCameraAsContentBroadcasting()) {
|
|
screenshareHasEnded();
|
|
}
|
|
|
|
try {
|
|
let stream;
|
|
let contentType = CONTENT_TYPE_SCREENSHARE;
|
|
if (options.stream == null) {
|
|
stream = await BridgeService.getScreenStream();
|
|
} else {
|
|
contentType = CONTENT_TYPE_CAMERA;
|
|
stream = options.stream;
|
|
}
|
|
_trackStreamTermination(stream, _handleStreamTermination);
|
|
|
|
if (!isPresenter) {
|
|
MediaStreamUtils.stopMediaStreamTracks(stream);
|
|
return;
|
|
}
|
|
|
|
await KurentoBridge.share(stream, onFail, contentType);
|
|
|
|
// Stream might have been disabled in the meantime. I love badly designed
|
|
// async components like this screen sharing bridge :) - prlanzarin 09 May 22
|
|
if (!_isStreamActive(stream)) {
|
|
_handleStreamTermination();
|
|
return;
|
|
}
|
|
|
|
// stop external video share if running
|
|
stopWatching();
|
|
|
|
setSharingContentType(contentType);
|
|
setIsSharing(true);
|
|
} catch (error) {
|
|
onFail(error);
|
|
}
|
|
};
|
|
|
|
const viewScreenshare = (options = {}) => {
|
|
const hasAudio = screenshareHasAudio();
|
|
KurentoBridge.view({ hasAudio, outputDeviceId: options.outputDeviceId })
|
|
.catch((error) => {
|
|
logger.error({
|
|
logCode: 'screenshare_view_failed',
|
|
extraInfo: {
|
|
errorName: error.name,
|
|
errorMessage: error.message,
|
|
},
|
|
}, 'Screenshare viewer failure');
|
|
});
|
|
};
|
|
|
|
const screenShareEndAlert = () => AudioService
|
|
.playAlertSound(`${window.meetingClientSettings.public.app.cdn
|
|
+ window.meetingClientSettings.public.app.basename
|
|
+ window.meetingClientSettings.public.app.instanceId}`
|
|
+ '/resources/sounds/ScreenshareOff.mp3');
|
|
|
|
/**
|
|
* Get stats about all active screenshare peers.
|
|
*
|
|
* For more information see:
|
|
* - https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/getStats
|
|
* - https://developer.mozilla.org/en-US/docs/Web/API/RTCStatsReport
|
|
|
|
* @param {Array[String]} statsType - An array containing valid RTCStatsType
|
|
* values to include in the return object
|
|
*
|
|
* @returns {Object} The information about each active screen sharing peer.
|
|
* The returned format follows the format returned by video's service
|
|
* getStats, which considers more than one peer connection to be returned.
|
|
* The format is given by:
|
|
* {
|
|
* peerIdString: RTCStatsReport
|
|
* }
|
|
*/
|
|
const getStats = async (statsTypes = DEFAULT_SCREENSHARE_STATS_TYPES) => {
|
|
const screenshareStats = {};
|
|
const peer = KurentoBridge.getPeerConnection();
|
|
|
|
if (!peer) return null;
|
|
|
|
const peerStats = await peer.getStats();
|
|
|
|
peerStats.forEach((stat) => {
|
|
if (statsTypes.includes(stat.type)) {
|
|
screenshareStats[stat.type] = stat;
|
|
}
|
|
});
|
|
|
|
return { screenshareStats };
|
|
};
|
|
|
|
// This method may throw errors
|
|
const isMediaFlowing = (previousStats, currentStats) => {
|
|
const bpsData = ConnectionStatusService.calculateBitsPerSecond(
|
|
currentStats?.screenshareStats,
|
|
previousStats?.screenshareStats,
|
|
);
|
|
const bpsDataAggr = Object.values(bpsData)
|
|
.reduce((sum, partialBpsData = 0) => sum + parseFloat(partialBpsData), 0);
|
|
|
|
return bpsDataAggr > 0;
|
|
};
|
|
|
|
export {
|
|
SCREENSHARE_MEDIA_ELEMENT_NAME,
|
|
isMediaFlowing,
|
|
isScreenBroadcasting,
|
|
isCameraAsContentBroadcasting,
|
|
screenshareHasEnded,
|
|
screenshareHasStarted,
|
|
screenshareHasAudio,
|
|
getBroadcastContentType,
|
|
shareScreen,
|
|
screenShareEndAlert,
|
|
isSharing,
|
|
setIsSharing,
|
|
setSharingContentType,
|
|
getSharingContentType,
|
|
getMediaElement,
|
|
getMediaElementDimensions,
|
|
attachLocalPreviewStream,
|
|
isScreenGloballyBroadcasting,
|
|
isCameraAsContentGloballyBroadcasting,
|
|
getStats,
|
|
setVolume,
|
|
getVolume,
|
|
shouldEnableVolumeControl,
|
|
setCameraAsContentDeviceId,
|
|
getCameraAsContentDeviceId,
|
|
setOutputDeviceId,
|
|
};
|