76 lines
2.1 KiB
JavaScript
76 lines
2.1 KiB
JavaScript
/* @flow */
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import { CONFERENCE_LEFT } from '../conference';
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import { MiddlewareRegistry } from '../redux';
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import { setTrackMuted, TRACK_ADDED } from '../tracks';
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import {
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setAudioMuted,
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setCameraFacingMode,
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setVideoMuted
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} from './actions';
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import { CAMERA_FACING_MODE } from './constants';
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/**
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* Middleware that captures CONFERENCE_LEFT action and restores initial state
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* for media devices. Also captures TRACK_ADDED to sync 'muted' state.
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*
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* @param {Store} store - Redux store.
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* @returns {Function}
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*/
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MiddlewareRegistry.register(store => next => action => {
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const result = next(action);
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switch (action.type) {
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case CONFERENCE_LEFT:
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_resetInitialMediaState(store);
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break;
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case TRACK_ADDED:
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action.track.local && _syncTrackMutedState(store, action.track);
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break;
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}
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return result;
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});
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/**
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* Resets initial media state.
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*
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* @param {Store} store - Redux store.
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* @private
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* @returns {void}
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*/
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function _resetInitialMediaState(store) {
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const { dispatch, getState } = store;
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const state = getState()['features/base/media'];
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state.audio.muted && dispatch(setAudioMuted(false));
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(state.video.facingMode !== CAMERA_FACING_MODE.USER)
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&& dispatch(setCameraFacingMode(CAMERA_FACING_MODE.USER));
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state.video.muted && dispatch(setVideoMuted(false));
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}
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/**
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* Syncs muted state of local media track with muted state from media state.
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*
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* @param {Store} store - Redux store.
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* @param {Track} track - Local media track.
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* @private
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* @returns {void}
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*/
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function _syncTrackMutedState(store, track) {
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const state = store.getState()['features/base/media'];
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const muted = state[track.mediaType].muted;
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// XXX If muted state of track when it was added is different from our media
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// muted state, we need to mute track and explicitly modify 'muted' property
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// on track. This is because though TRACK_ADDED action was dispatched it's
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// not yet in Redux state and JitsiTrackEvents.TRACK_MUTE_CHANGED may be
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// fired before track gets to state.
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if (track.muted !== muted) {
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track.muted = muted;
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setTrackMuted(track.jitsiTrack, muted);
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}
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}
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