jiti-meet/react/features/base/tracks/functions.js

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/* global APP */
import { getBlurEffect } from '../../blur';
import JitsiMeetJS, { JitsiTrackErrors, browser } from '../lib-jitsi-meet';
import { MEDIA_TYPE } from '../media';
import {
getUserSelectedCameraDeviceId,
getUserSelectedMicDeviceId
} from '../settings';
const logger = require('jitsi-meet-logger').getLogger(__filename);
/**
* Create local tracks of specific types.
*
* @param {Object} options - The options with which the local tracks are to be
* created.
* @param {string|null} [options.cameraDeviceId] - Camera device id or
* {@code undefined} to use app's settings.
* @param {string[]} options.devices - Required track types such as 'audio'
* and/or 'video'.
* @param {string|null} [options.micDeviceId] - Microphone device id or
* {@code undefined} to use app's settings.
* @param {boolean} [firePermissionPromptIsShownEvent] - Whether lib-jitsi-meet
* should check for a {@code getUserMedia} permission prompt and fire a
* corresponding event.
* @param {Object} store - The redux store in the context of which the function
* is to execute and from which state such as {@code config} is to be retrieved.
* @returns {Promise<JitsiLocalTrack[]>}
*/
export function createLocalTracksF(
options,
firePermissionPromptIsShownEvent,
store) {
options || (options = {}); // eslint-disable-line no-param-reassign
let { cameraDeviceId, micDeviceId } = options;
if (typeof APP !== 'undefined') {
// TODO The app's settings should go in the redux store and then the
// reliance on the global variable APP will go away.
store || (store = APP.store); // eslint-disable-line no-param-reassign
const state = store.getState();
if (typeof cameraDeviceId === 'undefined' || cameraDeviceId === null) {
cameraDeviceId = getUserSelectedCameraDeviceId(state);
}
if (typeof micDeviceId === 'undefined' || micDeviceId === null) {
micDeviceId = getUserSelectedMicDeviceId(state);
}
}
const state = store.getState();
const {
constraints,
desktopSharingFrameRate,
firefox_fake_device, // eslint-disable-line camelcase
resolution
} = state['features/base/config'];
const loadEffectsPromise = state['features/blur'].blurEnabled
? getBlurEffect()
.then(blurEffect => [ blurEffect ])
.catch(error => {
logger.error('Failed to obtain the blur effect instance with error: ', error);
return Promise.resolve([]);
})
: Promise.resolve([]);
return (
loadEffectsPromise.then(effects =>
JitsiMeetJS.createLocalTracks(
{
cameraDeviceId,
constraints,
desktopSharingExtensionExternalInstallation:
options.desktopSharingExtensionExternalInstallation,
desktopSharingFrameRate,
desktopSharingSourceDevice:
options.desktopSharingSourceDevice,
desktopSharingSources: options.desktopSharingSources,
// Copy array to avoid mutations inside library.
devices: options.devices.slice(0),
effects,
firefox_fake_device, // eslint-disable-line camelcase
micDeviceId,
resolution
},
firePermissionPromptIsShownEvent)
.catch(err => {
logger.error('Failed to create local tracks', options.devices, err);
return Promise.reject(err);
})));
}
/**
* Returns local audio track.
*
* @param {Track[]} tracks - List of all tracks.
* @returns {(Track|undefined)}
*/
export function getLocalAudioTrack(tracks) {
return getLocalTrack(tracks, MEDIA_TYPE.AUDIO);
}
/**
* Returns local track by media type.
*
* @param {Track[]} tracks - List of all tracks.
* @param {MEDIA_TYPE} mediaType - Media type.
* @param {boolean} [includePending] - Indicates whether a local track is to be
* returned if it is still pending. A local track is pending if
* {@code getUserMedia} is still executing to create it and, consequently, its
* {@code jitsiTrack} property is {@code undefined}. By default a pending local
* track is not returned.
* @returns {(Track|undefined)}
*/
export function getLocalTrack(tracks, mediaType, includePending = false) {
return (
getLocalTracks(tracks, includePending)
.find(t => t.mediaType === mediaType));
}
/**
* Returns an array containing the local tracks with or without a (valid)
* {@code JitsiTrack}.
*
* @param {Track[]} tracks - An array containing all local tracks.
* @param {boolean} [includePending] - Indicates whether a local track is to be
* returned if it is still pending. A local track is pending if
* {@code getUserMedia} is still executing to create it and, consequently, its
* {@code jitsiTrack} property is {@code undefined}. By default a pending local
* track is not returned.
* @returns {Track[]}
*/
export function getLocalTracks(tracks, includePending = false) {
// XXX A local track is considered ready only once it has its `jitsiTrack`
// property set by the `TRACK_ADDED` action. Until then there is a stub
// added just before the `getUserMedia` call with a cancellable
// `gumInProgress` property which then can be used to destroy the track that
// has not yet been added to the redux store. Once GUM is cancelled, it will
// never make it to the store nor there will be any
// `TRACK_ADDED`/`TRACK_REMOVED` actions dispatched for it.
return tracks.filter(t => t.local && (t.jitsiTrack || includePending));
}
/**
* Returns local video track.
*
* @param {Track[]} tracks - List of all tracks.
* @returns {(Track|undefined)}
*/
export function getLocalVideoTrack(tracks) {
return getLocalTrack(tracks, MEDIA_TYPE.VIDEO);
}
/**
* Returns track of specified media type for specified participant id.
*
* @param {Track[]} tracks - List of all tracks.
* @param {MEDIA_TYPE} mediaType - Media type.
* @param {string} participantId - Participant ID.
* @returns {(Track|undefined)}
*/
export function getTrackByMediaTypeAndParticipant(
tracks,
mediaType,
participantId) {
return tracks.find(
t => t.participantId === participantId && t.mediaType === mediaType
);
}
/**
* Returns the track if any which corresponds to a specific instance
* of JitsiLocalTrack or JitsiRemoteTrack.
*
* @param {Track[]} tracks - List of all tracks.
* @param {(JitsiLocalTrack|JitsiRemoteTrack)} jitsiTrack - JitsiTrack instance.
* @returns {(Track|undefined)}
*/
export function getTrackByJitsiTrack(tracks, jitsiTrack) {
return tracks.find(t => t.jitsiTrack === jitsiTrack);
}
/**
* Returns tracks of specified media type.
*
* @param {Track[]} tracks - List of all tracks.
* @param {MEDIA_TYPE} mediaType - Media type.
* @returns {Track[]}
*/
export function getTracksByMediaType(tracks, mediaType) {
return tracks.filter(t => t.mediaType === mediaType);
}
/**
* Checks if the first local track in the given tracks set is muted.
*
* @param {Track[]} tracks - List of all tracks.
* @param {MEDIA_TYPE} mediaType - The media type of tracks to be checked.
* @returns {boolean} True if local track is muted or false if the track is
* unmuted or if there are no local tracks of the given media type in the given
* set of tracks.
*/
export function isLocalTrackMuted(tracks, mediaType) {
const track = getLocalTrack(tracks, mediaType);
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return !track || track.muted;
}
/**
* Returns true if the remote track of the given media type and the given
* participant is muted, false otherwise.
*
* @param {Track[]} tracks - List of all tracks.
* @param {MEDIA_TYPE} mediaType - The media type of tracks to be checked.
* @param {*} participantId - Participant ID.
* @returns {boolean}
*/
export function isRemoteTrackMuted(tracks, mediaType, participantId) {
const track = getTrackByMediaTypeAndParticipant(
tracks, mediaType, participantId);
return !track || track.muted;
}
/**
* Returns whether or not the current environment needs a user interaction with
* the page before any unmute can occur.
*
* @param {Object} state - The redux state.
* @returns {boolean}
*/
export function isUserInteractionRequiredForUnmute(state) {
return browser.isUserInteractionRequiredForUnmute()
&& window
&& window.self !== window.top
&& !state['features/base/user-interaction'].interacted;
}
/**
* Mutes or unmutes a specific {@code JitsiLocalTrack}. If the muted state of
* the specified {@code track} is already in accord with the specified
* {@code muted} value, then does nothing.
*
* @param {JitsiLocalTrack} track - The {@code JitsiLocalTrack} to mute or
* unmute.
* @param {boolean} muted - If the specified {@code track} is to be muted, then
* {@code true}; otherwise, {@code false}.
* @returns {Promise}
*/
export function setTrackMuted(track, muted) {
muted = Boolean(muted); // eslint-disable-line no-param-reassign
if (track.isMuted() === muted) {
return Promise.resolve();
}
const f = muted ? 'mute' : 'unmute';
return track[f]().catch(error => {
// Track might be already disposed so ignore such an error.
if (error.name !== JitsiTrackErrors.TRACK_IS_DISPOSED) {
// FIXME Emit mute failed, so that the app can show error dialog.
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logger.error(`set track ${f} failed`, error);
}
});
}