jiti-meet/react/features/screen-share/middleware.ts

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import { IStore } from '../app/types';
import { CONFERENCE_JOINED } from '../base/conference/actionTypes';
import { MEDIA_TYPE } from '../base/media/constants';
import MiddlewareRegistry from '../base/redux/MiddlewareRegistry';
import { SET_SCREENSHARE_CAPTURE_FRAME_RATE, SET_SCREEN_AUDIO_SHARE_STATE } from './actionTypes';
import logger from './logger';
/**
* Implements the middleware of the feature screen-share.
*
* @param {Store} store - The redux store.
* @returns {Function}
*/
MiddlewareRegistry.register(store => next => action => {
const result = next(action);
const { getState } = store;
const state = getState();
switch (action.type) {
case CONFERENCE_JOINED: {
_setScreenshareCaptureFps(store);
break;
}
case SET_SCREENSHARE_CAPTURE_FRAME_RATE: {
const { captureFrameRate } = action;
_setScreenshareCaptureFps(store, captureFrameRate);
break;
}
case SET_SCREEN_AUDIO_SHARE_STATE: {
const { isSharingAudio } = action;
const { participantId } = state['features/large-video'];
if (isSharingAudio) {
logger.debug(`User with id: ${participantId} playing audio sharing.`);
APP.API.notifyAudioOrVideoSharingToggled(MEDIA_TYPE.AUDIO, 'playing', participantId);
} else {
logger.debug(`User with id: ${participantId} stop audio sharing.`);
APP.API.notifyAudioOrVideoSharingToggled(MEDIA_TYPE.AUDIO, 'stop', participantId);
}
}
}
return result;
});
/**
* Sets the capture frame rate for screenshare.
*
* @param {Store} store - The redux store.
* @param {number} frameRate - Frame rate to be configured.
* @private
* @returns {void}
*/
function _setScreenshareCaptureFps(store: IStore, frameRate?: number) {
const state = store.getState();
const { conference } = state['features/base/conference'];
const { captureFrameRate } = state['features/screen-share'];
const screenShareFps = frameRate ?? captureFrameRate;
if (!conference) {
return;
}
if (screenShareFps) {
logger.debug(`Setting screenshare capture frame rate as ${screenShareFps}`);
conference.setDesktopSharingFrameRate(screenShareFps);
}
}