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

533 lines
18 KiB
JavaScript
Raw Normal View History

import { sendAnalyticsEvent } from '../../analytics';
2017-07-18 21:43:58 +00:00
import { JitsiTrackErrors, JitsiTrackEvents } from '../lib-jitsi-meet';
import {
CAMERA_FACING_MODE,
MEDIA_TYPE,
setAudioMuted,
setVideoMuted
} from '../media';
import { getLocalParticipant } from '../participants';
import {
TRACK_ADDED,
TRACK_CREATE_CANCELED,
TRACK_CREATE_ERROR,
TRACK_REMOVED,
TRACK_UPDATED,
TRACK_WILL_CREATE
} from './actionTypes';
import { createLocalTracksF } from './functions';
const logger = require('jitsi-meet-logger').getLogger(__filename);
/**
* Requests the creating of the desired media type tracks. Desire is expressed
* by base/media unless the function caller specifies desired media types
* explicitly and thus override base/media. Dispatches a
* {@code createLocalTracksA} action for the desired media types for which there
* are no existing tracks yet.
*
* @returns {Function}
*/
export function createDesiredLocalTracks(...desiredTypes) {
return (dispatch, getState) => {
const state = getState();
if (desiredTypes.length === 0) {
const { audio, video } = state['features/base/media'];
audio.muted || desiredTypes.push(MEDIA_TYPE.AUDIO);
video.muted || desiredTypes.push(MEDIA_TYPE.VIDEO);
}
const availableTypes
= state['features/base/tracks']
.filter(t => t.local)
.map(t => t.mediaType);
// We need to create the desired tracks which are not already available.
const createTypes
= desiredTypes.filter(type => availableTypes.indexOf(type) === -1);
createTypes.length
&& dispatch(createLocalTracksA({ devices: createTypes }));
};
}
/**
* Request to start capturing local audio and/or video. By default, the user
* facing camera will be selected.
*
* @param {Object} [options] - For info @see JitsiMeetJS.createLocalTracks.
* @returns {Function}
*/
export function createLocalTracksA(options = {}) {
return (dispatch, getState) => {
const devices
= options.devices || [ MEDIA_TYPE.AUDIO, MEDIA_TYPE.VIDEO ];
const store = {
dispatch,
getState
};
// The following executes on React Native only at the time of this
// writing. The effort to port Web's createInitialLocalTracksAndConnect
// is significant and that's where the function createLocalTracksF got
// born. I started with the idea a porting so that we could inherit the
// ability to getUserMedia for audio only or video only if getUserMedia
// for audio and video fails. Eventually though, I realized that on
// mobile we do not have combined permission prompts implemented anyway
// (either because there are no such prompts or it does not make sense
// to implement them) and the right thing to do is to ask for each
// device separately.
for (const device of devices) {
if (getState()['features/base/tracks']
.find(t => t.local && t.mediaType === device)) {
throw new Error(`Local track for ${device} already exists`);
}
const gumProcess
= createLocalTracksF(
{
cameraDeviceId: options.cameraDeviceId,
devices: [ device ],
facingMode:
options.facingMode || CAMERA_FACING_MODE.USER,
micDeviceId: options.micDeviceId
},
/* firePermissionPromptIsShownEvent */ false,
store)
.then(
localTracks => {
// Because GUM is called for 1 device (which is actually
// a media type 'audio', 'video', 'screen', etc.) we
// should not get more than one JitsiTrack.
if (localTracks.length !== 1) {
throw new Error(
`Expected exactly 1 track, but was given ${
localTracks.length} tracks for device: ${
device}.`);
}
if (gumProcess.canceled) {
return _disposeTracks(localTracks)
.then(() =>
dispatch(_trackCreateCanceled(device)));
}
return dispatch(trackAdded(localTracks[0]));
},
reason =>
dispatch(
gumProcess.canceled
? _trackCreateCanceled(device)
: _onCreateLocalTracksRejected(
reason,
device)));
/**
* Cancels the {@code getUserMedia} process represented by this
* {@code Promise}.
*
* @returns {Promise} This {@code Promise} i.e. {@code gumProcess}.
*/
gumProcess.cancel = () => {
gumProcess.canceled = true;
return gumProcess;
};
dispatch({
type: TRACK_WILL_CREATE,
track: {
gumProcess,
local: true,
mediaType: device
}
});
}
};
}
/**
* Calls JitsiLocalTrack#dispose() on all local tracks ignoring errors when
* track is already disposed. After that signals tracks to be removed.
*
* @returns {Function}
*/
export function destroyLocalTracks() {
return (dispatch, getState) => {
// First wait until any getUserMedia in progress is settled and then get
// rid of all local tracks.
_cancelGUMProcesses(getState)
.then(() =>
dispatch(
_disposeAndRemoveTracks(
getState()['features/base/tracks']
.filter(t => t.local)
.map(t => t.jitsiTrack))));
};
}
/**
* Replaces one track with another for one renegotiation instead of invoking
2017-07-18 21:43:58 +00:00
* two renegotiations with a separate removeTrack and addTrack. Disposes the
* removed track as well.
*
* @param {JitsiLocalTrack|null} oldTrack - The track to dispose.
* @param {JitsiLocalTrack|null} newTrack - The track to use instead.
* @param {JitsiConference} [conference] - The conference from which to remove
2017-07-18 21:43:58 +00:00
* and add the tracks. If one is not provided, the conference in the redux store
* will be used.
* @returns {Function}
*/
export function replaceLocalTrack(oldTrack, newTrack, conference) {
return (dispatch, getState) => {
conference
// eslint-disable-next-line no-param-reassign
|| (conference = getState()['features/base/conference'].conference);
return conference.replaceTrack(oldTrack, newTrack)
.then(() => {
// We call dispose after doing the replace because dispose will
// try and do a new o/a after the track removes itself. Doing it
// after means the JitsiLocalTrack.conference is already
// cleared, so it won't try and do the o/a.
const disposePromise
= oldTrack
? dispatch(_disposeAndRemoveTracks([ oldTrack ]))
: Promise.resolve();
return disposePromise
.then(() => {
if (newTrack) {
// The mute state of the new track should be
// reflected in the app's mute state. For example,
// if the app is currently muted and changing to a
// new track that is not muted, the app's mute
// state should be falsey. As such, emit a mute
// event here to set up the app to reflect the
// track's mute state. If this is not done, the
// current mute state of the app will be reflected
// on the track, not vice-versa.
const setMuted
= newTrack.isVideoTrack()
? setVideoMuted
: setAudioMuted;
const isMuted = newTrack.isMuted();
sendAnalyticsEvent(`replacetrack.${
newTrack.getType()}.${
isMuted ? 'muted' : 'unmuted'}`);
logger.log(`Replace ${newTrack.getType()} track - ${
isMuted ? 'muted' : 'unmuted'}`);
return dispatch(setMuted(isMuted));
}
})
.then(() => {
if (newTrack) {
return dispatch(_addTracks([ newTrack ]));
}
});
});
};
}
/**
* Create an action for when a new track has been signaled to be added to the
* conference.
*
* @param {(JitsiLocalTrack|JitsiRemoteTrack)} track - JitsiTrack instance.
* @returns {{ type: TRACK_ADDED, track: Track }}
*/
export function trackAdded(track) {
return (dispatch, getState) => {
track.on(
JitsiTrackEvents.TRACK_MUTE_CHANGED,
() => dispatch(trackMutedChanged(track)));
track.on(
JitsiTrackEvents.TRACK_VIDEOTYPE_CHANGED,
type => dispatch(trackVideoTypeChanged(track, type)));
// participantId
2017-04-05 05:18:41 +00:00
const local = track.isLocal();
let participantId;
2017-04-05 05:18:41 +00:00
if (local) {
const participant = getLocalParticipant(getState);
if (participant) {
participantId = participant.id;
}
} else {
participantId = track.getParticipantId();
}
return dispatch({
type: TRACK_ADDED,
track: {
jitsiTrack: track,
2017-04-05 05:18:41 +00:00
local,
mediaType: track.getType(),
2017-04-05 05:18:41 +00:00
mirror: _shouldMirror(track),
muted: track.isMuted(),
participantId,
videoStarted: false,
videoType: track.videoType
}
});
};
}
/**
* Create an action for when a track's muted state has been signaled to be
* changed.
*
* @param {(JitsiLocalTrack|JitsiRemoteTrack)} track - JitsiTrack instance.
2017-07-18 21:43:58 +00:00
* @returns {{
* type: TRACK_UPDATED,
* track: Track
* }}
*/
export function trackMutedChanged(track) {
return {
type: TRACK_UPDATED,
track: {
jitsiTrack: track,
muted: track.isMuted()
}
};
}
/**
* Create an action for when a track has been signaled for removal from the
* conference.
*
* @param {(JitsiLocalTrack|JitsiRemoteTrack)} track - JitsiTrack instance.
2017-07-18 21:43:58 +00:00
* @returns {{
* type: TRACK_REMOVED,
* track: Track
* }}
*/
export function trackRemoved(track) {
track.removeAllListeners(JitsiTrackEvents.TRACK_MUTE_CHANGED);
track.removeAllListeners(JitsiTrackEvents.TRACK_VIDEOTYPE_CHANGED);
return {
type: TRACK_REMOVED,
track: {
jitsiTrack: track
}
};
}
/**
* Signal that track's video started to play.
*
* @param {(JitsiLocalTrack|JitsiRemoteTrack)} track - JitsiTrack instance.
2017-07-18 21:43:58 +00:00
* @returns {{
* type: TRACK_UPDATED,
* track: Track
* }}
*/
export function trackVideoStarted(track) {
return {
type: TRACK_UPDATED,
track: {
jitsiTrack: track,
videoStarted: true
}
};
}
/**
* Create an action for when participant video type changes.
*
* @param {(JitsiLocalTrack|JitsiRemoteTrack)} track - JitsiTrack instance.
* @param {VIDEO_TYPE|undefined} videoType - Video type.
2017-07-18 21:43:58 +00:00
* @returns {{
* type: TRACK_UPDATED,
* track: Track
* }}
*/
export function trackVideoTypeChanged(track, videoType) {
return {
type: TRACK_UPDATED,
track: {
jitsiTrack: track,
videoType
}
};
}
/**
* Signals passed tracks to be added.
*
* @param {(JitsiLocalTrack|JitsiRemoteTrack)[]} tracks - List of tracks.
* @private
* @returns {Function}
*/
function _addTracks(tracks) {
2017-07-18 21:43:58 +00:00
return dispatch => Promise.all(tracks.map(t => dispatch(trackAdded(t))));
}
/**
* Cancels and waits for any {@code getUserMedia} process/currently in progress
* to complete/settle.
*
* @param {Function} getState - The redux store {@code getState} function used
* to obtain the state.
* @private
* @returns {Promise} - A {@code Promise} resolved once all
* {@code gumProcess.cancel()} {@code Promise}s are settled because all we care
* about here is to be sure that the {@code getUserMedia} callbacks have
* completed (i.e. returned from the native side).
*/
function _cancelGUMProcesses(getState) {
const logError
= error =>
logger.error('gumProcess.cancel failed', JSON.stringify(error));
return Promise.all(
getState()['features/base/tracks']
.filter(t => t.local)
.map(({ gumProcess }) =>
gumProcess && gumProcess.cancel().catch(logError)));
}
/**
* Disposes passed tracks and signals them to be removed.
*
* @param {(JitsiLocalTrack|JitsiRemoteTrack)[]} tracks - List of tracks.
* @protected
* @returns {Function}
*/
export function _disposeAndRemoveTracks(tracks) {
return dispatch =>
_disposeTracks(tracks)
.then(() =>
Promise.all(tracks.map(t => dispatch(trackRemoved(t)))));
}
/**
* Disposes passed tracks.
*
* @param {(JitsiLocalTrack|JitsiRemoteTrack)[]} tracks - List of tracks.
* @private
* @returns {Promise} - A Promise resolved once {@link JitsiTrack.dispose()} is
* done for every track from the list.
*/
function _disposeTracks(tracks) {
return Promise.all(
tracks.map(t =>
t.dispose()
.catch(err => {
// Track might be already disposed so ignore such an error.
// Of course, re-throw any other error(s).
if (err.name !== JitsiTrackErrors.TRACK_IS_DISPOSED) {
throw err;
}
})));
}
/**
* Implements the {@code Promise} rejection handler of
* {@code createLocalTracksA} and {@code createLocalTracksF}.
*
* @param {Object} reason - The {@code Promise} rejection reason.
* @param {string} device - The device/{@code MEDIA_TYPE} associated with the
* rejection.
* @private
* @returns {Function}
*/
function _onCreateLocalTracksRejected({ gum }, device) {
return dispatch => {
// If permissions are not allowed, alert the user.
if (gum) {
const { error } = gum;
if (error) {
// FIXME For whatever reason (which is probably an
// implementation fault), react-native-webrtc will give the
// error in one of the following formats depending on whether it
// is attached to a remote debugger or not. (The remote debugger
// scenario suggests that react-native-webrtc is at fault
// because the remote debugger is Google Chrome and then its
// JavaScript engine will define DOMException. I suspect I wrote
// react-native-webrtc to return the error in the alternative
// format if DOMException is not defined.)
let trackPermissionError;
switch (error.name) {
case 'DOMException':
trackPermissionError = error.message === 'NotAllowedError';
break;
case 'NotAllowedError':
trackPermissionError = error instanceof DOMException;
break;
}
dispatch({
type: TRACK_CREATE_ERROR,
permissionDenied: trackPermissionError,
trackType: device
});
}
}
};
}
/**
* Returns true if the provided {@code JitsiTrack} should be rendered as a
* mirror.
*
* We only want to show a video in mirrored mode when:
* 1) The video source is local, and not remote.
* 2) The video source is a camera, not a desktop (capture).
* 3) The camera is capturing the user, not the environment.
*
* TODO Similar functionality is part of lib-jitsi-meet. This function should be
* removed after https://github.com/jitsi/lib-jitsi-meet/pull/187 is merged.
*
* @param {(JitsiLocalTrack|JitsiRemoteTrack)} track - JitsiTrack instance.
* @private
* @returns {boolean}
*/
function _shouldMirror(track) {
return (
track
&& track.isLocal()
&& track.isVideoTrack()
// XXX The type of the return value of JitsiLocalTrack's
// getCameraFacingMode happens to be named CAMERA_FACING_MODE as
// well, it's defined by lib-jitsi-meet. Note though that the type
// of the value on the right side of the equality check is defined
// by jitsi-meet. The type definitions are surely compatible today
// but that may not be the case tomorrow.
2017-07-18 21:43:58 +00:00
&& track.getCameraFacingMode() === CAMERA_FACING_MODE.USER);
}
/**
* Signals that track create operation for given media track has been canceled.
* Will clean up local track stub from the redux state which holds the
* {@code gumProcess} reference.
*
* @param {MEDIA_TYPE} mediaType - The type of the media for which the track was
* being created.
* @private
* @returns {{
* type,
* trackType: MEDIA_TYPE
* }}
*/
function _trackCreateCanceled(mediaType) {
return {
type: TRACK_CREATE_CANCELED,
trackType: mediaType
};
}