jitsi-meet-electron/modules/screensharing/index.js

const electron = require("electron");

/**
 * Get sources available for screensharing. The callback is invoked
 * with an array of DesktopCapturerSources.
 *
 * @param {Function} callback - The success callback.
 * @param {Function} errorCallback - The callback for errors.
 * @param {Object} options - Configuration for getting sources.
 * @param {Array} options.types - Specify the desktop source types to get,
 * with valid sources being "window" and "screen".
 * @param {Object} options.thumbnailSize - Specify how big the preview
 * images for the sources should be. The valid keys are height and width,
 * e.g. { height: number, width: number}. By default electron will return
 * images with height and width of 150px.
 */
function obtainDesktopStreams(callback, errorCallback, options = {}) {
    electron.desktopCapturer.getSources(options,
        (error, sources) => {
            if (error) {
                errorCallback(error);
                return;
            }

            callback(sources);
        });
}

module.exports = function setupScreenSharingForWindow(pWindow) {
    pWindow.JitsiMeetElectron = {
        obtainDesktopStreams
    };
};