jiti-meet/react/features/video-layout/functions.any.js

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// @flow
import type { Dispatch } from 'redux';
import { getFeatureFlag, TILE_VIEW_ENABLED } from '../base/flags';
import {
getPinnedParticipant,
getParticipantCount,
pinParticipant
} from '../base/participants';
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import { isStageFilmstripAvailable } from '../filmstrip/functions';
import { isVideoPlaying } from '../shared-video/functions';
import { VIDEO_QUALITY_LEVELS } from '../video-quality/constants';
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import { LAYOUTS } from './constants';
declare var interfaceConfig: Object;
/**
* A selector for retrieving the current automatic pinning setting.
*
* @private
* @returns {string|undefined} The string "remote-only" is returned if only
* remote screen sharing should be automatically pinned, any other truthy value
* means automatically pin all screen shares. Falsy means do not automatically
* pin any screen shares.
*/
export function getAutoPinSetting() {
return typeof interfaceConfig === 'object'
? interfaceConfig.AUTO_PIN_LATEST_SCREEN_SHARE
: 'remote-only';
}
/**
* Returns the {@code LAYOUTS} constant associated with the layout
* the application should currently be in.
*
* @param {Object} state - The redux state.
* @returns {string}
*/
export function getCurrentLayout(state: Object) {
if (shouldDisplayTileView(state)) {
return LAYOUTS.TILE_VIEW;
} else if (interfaceConfig.VERTICAL_FILMSTRIP) {
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if (isStageFilmstripAvailable(state, 2)) {
return LAYOUTS.STAGE_FILMSTRIP_VIEW;
}
return LAYOUTS.VERTICAL_FILMSTRIP_VIEW;
}
return LAYOUTS.HORIZONTAL_FILMSTRIP_VIEW;
}
/**
* Selector for determining if the UI layout should be in tile view. Tile view
* is determined by more than just having the tile view setting enabled, as
* one-on-one calls should not be in tile view, as well as etherpad editing.
*
* @param {Object} state - The redux state.
* @returns {boolean} True if tile view should be displayed.
*/
export function shouldDisplayTileView(state: Object = {}) {
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const participantCount = getParticipantCount(state);
const tileViewEnabledFeatureFlag = getFeatureFlag(state, TILE_VIEW_ENABLED, true);
const { disableTileView } = state['features/base/config'];
if (disableTileView || !tileViewEnabledFeatureFlag) {
return false;
}
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const { tileViewEnabled } = state['features/video-layout'];
if (tileViewEnabled !== undefined) {
// If the user explicitly requested a view mode, we
// do that.
return tileViewEnabled;
}
const { iAmRecorder } = state['features/base/config'];
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// None tile view mode is easier to calculate (no need for many negations), so we do
// that and negate it only once.
const shouldDisplayNormalMode = Boolean(
// Reasons for normal mode:
// Editing etherpad
state['features/etherpad']?.editing
// We pinned a participant
|| getPinnedParticipant(state)
// It's a 1-on-1 meeting
|| participantCount < 3
// There is a shared YouTube video in the meeting
|| isVideoPlaying(state)
// We want jibri to use stage view by default
|| iAmRecorder
);
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return !shouldDisplayNormalMode;
}
/**
* Private helper to automatically pin the latest screen share stream or unpin
* if there are no more screen share streams.
*
* @param {Array<string>} screenShares - Array containing the list of all the screen sharing endpoints
* before the update was triggered (including the ones that have been removed from redux because of the update).
* @param {Store} store - The redux store.
* @returns {void}
*/
export function updateAutoPinnedParticipant(
screenShares: Array<string>, { dispatch, getState }: { dispatch: Dispatch<any>, getState: Function }) {
const state = getState();
const remoteScreenShares = state['features/video-layout'].remoteScreenShares;
const pinned = getPinnedParticipant(getState);
// if the pinned participant is shared video or some other fake participant we want to skip auto-pinning
if (pinned?.isFakeParticipant) {
return;
}
// Unpin the screen share when the screen sharing participant leaves. Switch to tile view if no other
// participant was pinned before screen share was auto-pinned, pin the previously pinned participant otherwise.
if (!remoteScreenShares?.length) {
let participantId = null;
if (pinned && !screenShares.find(share => share === pinned.id)) {
participantId = pinned.id;
}
dispatch(pinParticipant(participantId));
return;
}
const latestScreenShareParticipantId = remoteScreenShares[remoteScreenShares.length - 1];
if (latestScreenShareParticipantId) {
dispatch(pinParticipant(latestScreenShareParticipantId));
}
}
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/**
* Selector for whether we are currently in tile view.
*
* @param {Object} state - The redux state.
* @returns {boolean}
*/
export function isLayoutTileView(state: Object) {
return getCurrentLayout(state) === LAYOUTS.TILE_VIEW;
}
/**
* Gets the video quality for the given height.
*
* @param {number|undefined} height - Height of the video container.
* @returns {number}
*/
function getVideoQualityForHeight(height: number) {
if (!height) {
return VIDEO_QUALITY_LEVELS.LOW;
}
const levels = Object.values(VIDEO_QUALITY_LEVELS)
.map(Number)
.sort((a, b) => a - b);
for (const level of levels) {
if (height <= level) {
return level;
}
}
return VIDEO_QUALITY_LEVELS.ULTRA;
}
/**
* Gets the video quality level for the resizable filmstrip thumbnail height.
*
* @param {Object} state - Redux state.
* @returns {number}
*/
export function getVideoQualityForResizableFilmstripThumbnails(state) {
const height = state['features/filmstrip'].verticalViewDimensions?.gridView?.thumbnailSize?.height;
return getVideoQualityForHeight(height);
}
/**
* Gets the video quality for the large video.
*
* @returns {number}
*/
export function getVideoQualityForLargeVideo() {
const wrapper = document.querySelector('#largeVideoWrapper');
return getVideoQualityForHeight(wrapper.clientHeight);
}
/**
* Gets the video quality level for the thumbnails in the stage filmstrip.
*
* @param {Object} state - Redux state.
* @returns {number}
*/
export function getVideoQualityForStageThumbnails(state) {
const height = state['features/filmstrip'].stageFilmstripDimensions?.thumbnailSize?.height;
return getVideoQualityForHeight(height);
}