161 lines
5.4 KiB
JavaScript
161 lines
5.4 KiB
JavaScript
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// @flow
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import { getLogger } from 'jitsi-meet-logger';
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import { SET_FILMSTRIP_ENABLED } from '../../filmstrip/actionTypes';
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import { APP_STATE_CHANGED } from '../../mobile/background/actionTypes';
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import { SET_AUDIO_ONLY } from '../audio-only';
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import { CONFERENCE_JOINED } from '../conference/actionTypes';
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import { MiddlewareRegistry } from '../redux';
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import { setLastN } from './actions';
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import { SET_LASTN } from './actionTypes';
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declare var APP: Object;
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const logger = getLogger('features/base/lastn');
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MiddlewareRegistry.register(store => next => action => {
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switch (action.type) {
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case APP_STATE_CHANGED:
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return _appStateChanged(store, next, action);
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case CONFERENCE_JOINED:
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return _conferenceJoined(store, next, action);
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case SET_AUDIO_ONLY:
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return _setAudioOnly(store, next, action);
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case SET_FILMSTRIP_ENABLED:
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return _setFilmstripEnabled(store, next, action);
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case SET_LASTN:
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return _setLastN(store, next, action);
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}
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return next(action);
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});
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/**
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* Adjusts the lasN value based on the app state.
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*
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* @param {Store} store - The redux store in which the specified {@code action}
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* is being dispatched.
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* @param {Dispatch} next - The redux {@code dispatch} function to dispatch the
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* specified {@code action} to the specified {@code store}.
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* @param {Action} action - The redux action {@code APP_STATE_CHANGED} which is
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* being dispatched in the specified {@code store}.
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* @private
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* @returns {Object} The value returned by {@code next(action)}.
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*/
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function _appStateChanged({ dispatch, getState }, next, action) {
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const { enabled: audioOnly } = getState()['features/base/audio-only'];
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if (!audioOnly) {
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const { appState } = action;
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const lastN = appState === 'active' ? undefined : 0;
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dispatch(setLastN(lastN));
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logger.log(`App state changed - updated lastN to ${String(lastN)}`);
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}
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return next(action);
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}
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/**
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* Adjusts the lasN value upon joining a conference.
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*
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* @param {Store} store - The redux store in which the specified {@code action}
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* is being dispatched.
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* @param {Dispatch} next - The redux {@code dispatch} function to dispatch the
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* specified {@code action} to the specified {@code store}.
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* @param {Action} action - The redux action {@code CONFERENCE_JOINED} which is
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* being dispatched in the specified {@code store}.
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* @private
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* @returns {Object} The value returned by {@code next(action)}.
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*/
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function _conferenceJoined({ dispatch, getState }, next, action) {
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const { conference } = action;
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const { enabled: audioOnly } = getState()['features/base/audio-only'];
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audioOnly && conference.getLastN() !== 0 && dispatch(setLastN(0));
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return next(action);
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}
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/**
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* Sets the audio-only flag for the current conference. When audio-only is set,
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* local video is muted and last N is set to 0 to avoid receiving remote video.
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*
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* @param {Store} store - The redux store in which the specified {@code action}
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* is being dispatched.
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* @param {Dispatch} next - The redux {@code dispatch} function to dispatch the
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* specified {@code action} to the specified {@code store}.
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* @param {Action} action - The redux action {@code SET_AUDIO_ONLY} which is
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* being dispatched in the specified {@code store}.
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* @private
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* @returns {Object} The value returned by {@code next(action)}.
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*/
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function _setAudioOnly({ dispatch }, next, action) {
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const { audioOnly } = action;
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// Set lastN to 0 in case audio-only is desired; leave it as undefined,
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// otherwise, and the default lastN value will be chosen automatically.
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dispatch(setLastN(audioOnly ? 0 : undefined));
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return next(action);
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}
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/**
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* Notifies the feature filmstrip that the action {@link SET_FILMSTRIP_ENABLED}
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* is being dispatched within a specific redux store.
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*
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* @param {Store} store - The redux store in which the specified action is being
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* dispatched.
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* @param {Dispatch} next - The redux dispatch function to dispatch the
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* specified action to the specified store.
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* @param {Action} action - The redux action {@code SET_FILMSTRIP_ENABLED} which
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* is being dispatched in the specified store.
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* @private
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* @returns {Object} The value returned by {@code next(action)}.
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*/
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function _setFilmstripEnabled({ dispatch, getState }, next, action) {
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// FIXME This action is not currently dispatched on web.
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if (typeof APP === 'undefined') {
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const { enabled } = action;
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const { enabled: audioOnly } = getState()['features/base/audio-only'];
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audioOnly || dispatch(setLastN(enabled ? undefined : 1));
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}
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return next(action);
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}
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/**
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* Sets the last N (value) of the video channel in the conference.
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*
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* @param {Store} store - The redux store in which the specified {@code action}
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* is being dispatched.
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* @param {Dispatch} next - The redux {@code dispatch} function to dispatch the
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* specified {@code action} to the specified {@code store}.
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* @param {Action} action - The redux action {@code SET_LASTN} which is being
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* dispatched in the specified {@code store}.
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* @private
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* @returns {Object} The value returned by {@code next(action)}.
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*/
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function _setLastN({ getState }, next, action) {
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const { conference } = getState()['features/base/conference'];
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if (conference) {
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try {
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conference.setLastN(action.lastN);
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} catch (err) {
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logger.error(`Failed to set lastN: ${err}`);
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}
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}
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return next(action);
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}
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