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import { Connection, OpenVidu, Publisher, PublisherProperties, Session, SignalOptions } from 'openvidu-browser';
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import { LoggerService } from '../../services/logger/logger.service';
import { LocalUserService } from '../../services/local-user/local-user.service';
import { ILogger } from '../../models/logger.model';
import { ScreenType } from '../../models/video-type.model';
import { Signal } from '../../models/signal.model';
import { LibraryConfigService } from '../library-config/library-config.service';
import { PlatformService } from '../platform/platform.service';
@Injectable({
providedIn: 'root'
})
export class WebrtcService {
private OV: OpenVidu = null;
private OVScreen: OpenVidu = null;
private webcamSession: Session = null;
private screenSession: Session = null;
private videoSource = undefined;
private audioSource = undefined;
private screenMediaStream: MediaStream = null;
private webcamMediaStream: MediaStream = null;
private log: ILogger;
constructor(
private libraryConfigSrv: LibraryConfigService,
private platformService: PlatformService,
private loggerSrv: LoggerService,
private localUsersSrv: LocalUserService
) {
this.log = this.loggerSrv.get('WebRTCService');
this.OV = new OpenVidu();
if (this.libraryConfigSrv.isProduction()) this.OV.enableProdMode();
this.webcamSession = this.OV.initSession();
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// Initialize screen session only if it is not mobile platform
if (!this.platformService.isMobile()) {
this.OVScreen = new OpenVidu();
if (this.libraryConfigSrv.isProduction()) this.OVScreen.enableProdMode();
this.screenSession = this.OVScreen.initSession();
}I
}
getWebcamSession(): Session {
return this.webcamSession;
}
isWebcamSessionConnected(): boolean {
return !!this.webcamSession.capabilities;
}
getScreenSession(): Session {
return this.screenSession;
}
isScreenSessionConnected(): boolean {
return !!this.screenSession.capabilities;
}
async connectWebcamSession(token: string): Promise<any> {
if (!!token) {
this.log.d('Connecting webcam session');
const webcamUsername = this.localUsersSrv.getWebcamUserName();
await this.webcamSession.connect(token, { clientData: webcamUsername });
}
}
disconnectWebcamSession(): void {
if (this.webcamSession) {
this.log.d('Disconnecting webcam session');
this.webcamSession.disconnect();
this.webcamSession = null;
}
}
async connectScreenSession(token: string): Promise<any> {
if (!!token) {
this.log.d('Connecting screen session');
const screenUsername = this.localUsersSrv.getScreenUserName();
await this.screenSession.connect(token, { clientData: screenUsername });
}
}
disconnectScreenSession(): void {
if (this.screenSession) {
this.log.d('Disconnecting screen session');
this.screenSession.disconnect();
this.screenSession = null;
}
}
disconnect() {
this.disconnectWebcamSession();
this.disconnectScreenSession();
this.videoSource = undefined;
this.audioSource = undefined;
this.stopVideoTracks(this.localUsersSrv.getWebcamPublisher()?.stream?.getMediaStream());
this.stopVideoTracks(this.localUsersSrv.getScreenPublisher()?.stream?.getMediaStream());
this.stopAudioTracks(this.localUsersSrv.getWebcamPublisher()?.stream?.getMediaStream());
this.stopAudioTracks(this.localUsersSrv.getScreenPublisher()?.stream?.getMediaStream());
}
initPublisher(targetElement: string | HTMLElement, properties: PublisherProperties): Publisher {
this.log.d('Initializing publisher with properties: ', properties);
const publisher = this.OV.initPublisher(targetElement, properties);
// this.localUsersSrv.setWebcamPublisher(publisher);
publisher.once('streamPlaying', () => {
(<HTMLElement>publisher.videos[0].video).parentElement.classList.remove('custom-class');
});
return publisher;
}
async initPublisherAsync(targetElement: string | HTMLElement, properties: PublisherProperties): Promise<Publisher> {
this.log.d('Initializing publisher with properties: ', properties);
const publisher = await this.OV.initPublisherAsync(targetElement, properties);
// this.localUsersSrv.setWebcamPublisher(publisher);
publisher.once('streamPlaying', () => {
(<HTMLElement>publisher.videos[0].video).parentElement.classList.remove('custom-class');
});
return publisher;
}
destroyWebcamPublisher(): void {
const publisher = this.localUsersSrv.getWebcamPublisher();
if (!!publisher) {
// publisher.off('streamAudioVolumeChange');
if (publisher.stream.getWebRtcPeer()) {
publisher.stream.disposeWebRtcPeer();
}
publisher.stream.disposeMediaStream();
this.localUsersSrv.setWebcamPublisher(publisher);
}
}
destroyScreenPublisher(): void {
const publisher = this.localUsersSrv.getScreenPublisher();
if (!!publisher) {
// publisher.off('streamAudioVolumeChange');
if (publisher.stream.getWebRtcPeer()) {
publisher.stream.disposeWebRtcPeer();
}
publisher.stream.disposeMediaStream();
this.localUsersSrv.setScreenPublisher(publisher);
}
}
async publishWebcamPublisher(): Promise<any> {
if (this.webcamSession?.capabilities?.publish) {
const publisher = this.localUsersSrv.getWebcamPublisher();
if (!!publisher) {
return await this.webcamSession.publish(publisher);
}
}
this.log.e('Webcam publisher cannot be published');
}
unpublishWebcamPublisher(): void {
const publisher = this.localUsersSrv.getWebcamPublisher();
if (!!publisher) {
this.publishScreenAudio(this.localUsersSrv.hasWebcamAudioActive());
this.webcamSession.unpublish(publisher);
}
}
async publishScreenPublisher(): Promise<any> {
if (this.screenSession?.capabilities?.publish) {
const publisher = this.localUsersSrv.getScreenPublisher();
if (!!publisher) {
return await this.screenSession.publish(publisher);
}
}
this.log.e('Screen publisher cannot be published');
}
unpublishScreenPublisher(): void {
const publisher = this.localUsersSrv.getScreenPublisher();
if (!!publisher) {
this.screenSession.unpublish(publisher);
}
}
publishWebcamVideo(active: boolean): void {
this.localUsersSrv.getWebcamPublisher().publishVideo(active);
// Send event to subscribers because of video has changed and view must update
this.localUsersSrv.updateUsersStatus();
}
publishWebcamAudio(active: boolean): void {
const publisher = this.localUsersSrv.getWebcamPublisher();
if (!!publisher) {
publisher.publishAudio(active);
}
this.localUsersSrv.updateUsersStatus();
}
publishScreenAudio(active: boolean): void {
const publisher = this.localUsersSrv.getScreenPublisher();
if (!!publisher) {
publisher.publishAudio(active);
}
this.localUsersSrv.updateUsersStatus();
}
replaceTrack(videoSource: string, audioSource: string, mirror: boolean = true): Promise<void> {
return new Promise((resolve, reject) => {
if (!!videoSource) {
this.log.d('Replacing video track ' + videoSource);
this.videoSource = videoSource;
// this.stopVideoTracks(this.webcamUser.getStreamManager().stream.getMediaStream());
}
if (!!audioSource) {
this.log.d('Replacing audio track ' + audioSource);
this.audioSource = audioSource;
// this.stopAudioTracks(this.webcamUser.getStreamManager().stream.getMediaStream());
}
this.destroyWebcamPublisher();
const properties = this.createPublisherProperties(
this.videoSource,
this.audioSource,
this.localUsersSrv.hasWebcamVideoActive(),
this.localUsersSrv.hasWebcamAudioActive(),
mirror
);
const publisher = this.initPublisher(undefined, properties);
this.localUsersSrv.setWebcamPublisher(publisher);
publisher.once('streamPlaying', () => {
this.localUsersSrv.setWebcamPublisher(publisher);
resolve();
});
publisher.once('accessDenied', () => {
reject();
});
// Reeplace track method
// this.webcamMediaStream = await this.OV.getUserMedia(properties);
// const track: MediaStreamTrack = !!videoSource
// ? this.webcamMediaStream.getVideoTracks()[0]
// : this.webcamMediaStream.getAudioTracks()[0];
// try {
// await (<Publisher>this.webcamUser.getStreamManager()).replaceTrack(track);
// } catch (error) {
// this.log.e('Error replacing track ', error);
// }
});
}
sendSignal(type: Signal, connection?: Connection, data?: any): void {
const signalOptions: SignalOptions = {
data: JSON.stringify(data),
type: type,
to: connection ? [connection] : undefined
};
this.webcamSession.signal(signalOptions);
if (type === Signal.NICKNAME_CHANGED && !!this.getScreenSession().connection) {
signalOptions.data = JSON.stringify({ clientData: this.localUsersSrv.getScreenUserName() });
this.getScreenSession()?.signal(signalOptions);
}
}
createPublisherProperties(
videoSource: string | MediaStreamTrack | boolean,
audioSource: string | MediaStreamTrack | boolean,
publishVideo: boolean,
publishAudio: boolean,
mirror: boolean
): PublisherProperties {
return {
videoSource,
audioSource,
publishVideo,
publishAudio,
mirror
};
}
async replaceScreenTrack() {
const videoSource = ScreenType.SCREEN;
const hasAudio = !this.localUsersSrv.isWebCamEnabled();
const properties = this.createPublisherProperties(videoSource, undefined, true, hasAudio, false);
this.stopScreenTracks();
this.screenMediaStream = await this.OVScreen.getUserMedia(properties);
await this.localUsersSrv.getScreenPublisher().replaceTrack(this.screenMediaStream.getVideoTracks()[0]);
}
stopAudioTracks(mediaStream: MediaStream) {
mediaStream?.getAudioTracks().forEach((track) => {
track.stop();
track.enabled = false;
});
this.webcamMediaStream?.getAudioTracks().forEach((track) => {
track.stop();
});
}
stopVideoTracks(mediaStream: MediaStream) {
mediaStream?.getVideoTracks().forEach((track) => {
track.stop();
});
}
needSendNicknameSignal(): boolean {
const oldNickname: string = JSON.parse(this.webcamSession.connection.data).clientData;
return oldNickname !== this.localUsersSrv.getWebcamUserName();
}
isMyOwnConnection(connectionId: string): boolean {
return (
this.webcamSession?.connection?.connectionId === connectionId || this.screenSession?.connection?.connectionId === connectionId
);
}
getSessionOfUserConnected(): Session {
return this.localUsersSrv.isWebCamEnabled() ? this.webcamSession : this.screenSession;
}
private stopScreenTracks() {
if (this.screenMediaStream) {
this.stopAudioTracks(this.screenMediaStream);
this.stopVideoTracks(this.screenMediaStream);
}
}
}
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