// @flow import Spinner from '@atlaskit/spinner'; import React, { PureComponent } from 'react'; import { translate } from '../../base/i18n'; import { VIDEO_TYPE } from '../../base/media'; import Video from '../../base/media/components/Video'; import { connect, equals } from '../../base/redux'; import { getCurrentCameraDeviceId } from '../../base/settings'; import { createLocalTracksF } from '../../base/tracks/functions'; import { toggleBackgroundEffect } from '../actions'; import { VIRTUAL_BACKGROUND_TYPE } from '../constants'; import { localTrackStopped } from '../functions'; const videoClassName = 'video-preview-video'; /** * The type of the React {@code PureComponent} props of {@link VirtualBackgroundPreview}. */ export type Props = { /** * The deviceId of the camera device currently being used. */ _currentCameraDeviceId: string, /** * The redux {@code dispatch} function. */ dispatch: Function, /** * Represents the virtual background setted options. */ options: Object, /** * Invoked to obtain translated strings. */ t: Function }; /** * The type of the React {@code Component} state of {@link VirtualBackgroundPreview}. */ type State = { /** * Loader activated on setting virtual background. */ loading: boolean, /** * Activate the selected device camera only. */ jitsiTrack: Object }; /** * Implements a React {@link PureComponent} which displays the virtual * background preview. * * @extends PureComponent */ class VirtualBackgroundPreview extends PureComponent { _componentWasUnmounted: boolean; /** * Initializes a new {@code VirtualBackgroundPreview} instance. * * @param {Object} props - The read-only properties with which the new * instance is to be initialized. */ constructor(props) { super(props); this.state = { loading: false, jitsiTrack: null }; } /** * Destroys the jitsiTrack object. * * @param {Object} jitsiTrack - The track that needs to be disposed. * @returns {Promise} */ _stopStream(jitsiTrack) { if (jitsiTrack) { jitsiTrack.dispose(); } } /** * Creates and updates the track data. * * @returns {void} */ async _setTracks() { const [ jitsiTrack ] = await createLocalTracksF({ cameraDeviceId: this.props._currentCameraDeviceId, devices: [ 'video' ] }); // In case the component gets unmounted before the tracks are created // avoid a leak by not setting the state if (this._componentWasUnmounted) { this._stopStream(jitsiTrack); return; } this.setState({ jitsiTrack }); if (this.props.options.backgroundType === VIRTUAL_BACKGROUND_TYPE.DESKTOP_SHARE) { this._applyBackgroundEffect(); } } /** * Apply background effect on video preview. * * @returns {Promise} */ async _applyBackgroundEffect() { this.setState({ loading: true }); await this.props.dispatch(toggleBackgroundEffect(this.props.options, this.state.jitsiTrack)); this.setState({ loading: false }); } /** * Apply video preview loader. * * @returns {Promise} */ _loadVideoPreview() { return (
); } /** * Renders a preview entry. * * @param {Object} data - The track data. * @returns {React$Node} */ _renderPreviewEntry(data) { const { t } = this.props; const className = 'video-background-preview-entry'; if (this.state.loading) { return this._loadVideoPreview(); } if (!data) { return (
{t('deviceSelection.previewUnavailable')}
); } const props: Object = { className }; return (
); } /** * Implements React's {@link Component#componentDidMount}. * * @inheritdoc */ componentDidMount() { this._setTracks(); } /** * Implements React's {@link Component#componentWillUnmount}. * * @inheritdoc */ componentWillUnmount() { this._componentWasUnmounted = true; this._stopStream(this.state.jitsiTrack); } /** * Implements React's {@link Component#componentDidUpdate}. * * @inheritdoc */ async componentDidUpdate(prevProps) { if (!equals(this.props._currentCameraDeviceId, prevProps._currentCameraDeviceId)) { this._setTracks(); } if (!equals(this.props.options, prevProps.options)) { if (prevProps.options.backgroundType === VIRTUAL_BACKGROUND_TYPE.DESKTOP_SHARE) { prevProps.options.url.dispose(); } this._applyBackgroundEffect(); } if (this.props.options.url?.videoType === VIDEO_TYPE.DESKTOP) { localTrackStopped(this.props.dispatch, this.props.options.url, this.state.jitsiTrack); } } /** * Implements React's {@link Component#render}. * * @inheritdoc */ render() { const { jitsiTrack } = this.state; return jitsiTrack ?
{this._renderPreviewEntry(jitsiTrack)}
:
{this._loadVideoPreview()}
; } } /** * Maps (parts of) the redux state to the associated props for the * {@code VirtualBackgroundPreview} component. * * @param {Object} state - The Redux state. * @private * @returns {{Props}} */ function _mapStateToProps(state): Object { return { _currentCameraDeviceId: getCurrentCameraDeviceId(state) }; } export default translate(connect(_mapStateToProps)(VirtualBackgroundPreview));