jiti-meet/react/features/screenshot-capture/actions.js

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// @flow
import { getLocalVideoTrack } from '../../features/base/tracks';
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import { createScreenshotCaptureEffect } from '../stream-effects/screenshot-capture';
import { SET_SCREENSHOT_CAPTURE } from './actionTypes';
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import logger from './logger';
let ongoingEffect;
/**
* Marks the on-off state of screenshot captures.
*
* @param {boolean} enabled - Whether to turn screen captures on or off.
* @returns {{
* type: START_SCREENSHOT_CAPTURE,
* payload: enabled
* }}
*/
function setScreenshotCapture(enabled) {
return {
type: SET_SCREENSHOT_CAPTURE,
payload: enabled
};
}
/**
* Action that toggles the screenshot captures.
*
* @param {boolean} enabled - Bool that represents the intention to start/stop screenshot captures.
* @returns {Promise}
*/
export function toggleScreenshotCaptureEffect(enabled: boolean) {
return async function(dispatch: (Object) => Object, getState: () => any) {
const state = getState();
if (state['features/screenshot-capture'].capturesEnabled !== enabled) {
const { jitsiTrack } = getLocalVideoTrack(state['features/base/tracks']);
if (!ongoingEffect) {
ongoingEffect = await createScreenshotCaptureEffect(state);
}
// Screenshot capture effect doesn't return a modified stream. Therefore, we don't have to
// switch the stream at the conference level, starting/stopping the effect will suffice here.
if (enabled) {
try {
await ongoingEffect.startEffect(
jitsiTrack.getOriginalStream(),
jitsiTrack.videoType
);
dispatch(setScreenshotCapture(enabled));
} catch {
// Handle promise rejection from {@code startEffect} due to stream type not being desktop.
logger.error('Unsupported stream type.');
}
} else {
ongoingEffect.stopEffect();
dispatch(setScreenshotCapture(enabled));
}
}
return Promise.resolve();
};
}