openvidu/openvidu-browser/src/OpenViduInternal/Events/StreamManagerEvent.ts

57 lines
2.4 KiB
TypeScript

/*
* (C) Copyright 2017-2022 OpenVidu (https://openvidu.io)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
import { Event } from './Event';
import { StreamManager } from '../../OpenVidu/StreamManager';
/**
* Defines the following events:
* - `streamPlaying`: dispatched by [[StreamManager]] ([[Publisher]] and [[Subscriber]]) whenever its media stream starts playing (one of its videos has media
* and has begun to play). This event will be dispatched when these 3 conditions are met:
* 1. The StreamManager has no video associated in the DOM
* 2. It is associated to one video
* 3. That video starts playing. Internally the expected Web API event is [HTMLMediaElement.canplay](https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canplay_event)
* - `streamAudioVolumeChange`: dispatched by [[StreamManager]] ([[Publisher]] and [[Subscriber]]) when the volume of its Stream's audio track
* changes. Only applies if [[Stream.hasAudio]] is `true`. The frequency this event is fired with is defined by property `interval` of
* [[OpenViduAdvancedConfiguration.publisherSpeakingEventsOptions]] (default 100ms)
*/
export class StreamManagerEvent extends Event {
/**
* For `streamAudioVolumeChange` event:
* - `{newValue: number, oldValue: number}`: new and old audio volume values. These values are between -100 (silence) and 0 (loudest possible volume).
* They are not exact and depend on how the browser is managing the audio track, but -100 and 0 can be taken as limit values.
*
* For `streamPlaying` event undefined
*/
value: Object | undefined;
/**
* @hidden
*/
constructor(target: StreamManager, type: string, value: Object | undefined) {
super(false, target, type);
this.value = value;
}
/**
* @hidden
*/
// tslint:disable-next-line:no-empty
callDefaultBehavior() { }
}