openvidu/openvidu-browser/lib/OpenViduInternal/ScreenSharing/Screen-Capturing-Auto.js

window.getScreenId = function (callback) {
    if (!!navigator.mozGetUserMedia) {
        callback(null, 'firefox', {
            video: {
                mozMediaSource: 'window',
                mediaSource: 'window'
            }
        });
        return;
    }
    window.addEventListener('message', onIFrameCallback);
    function onIFrameCallback(event) {
        if (!event.data)
            return;
        if (event.data.chromeMediaSourceId) {
            if (event.data.chromeMediaSourceId === 'PermissionDeniedError') {
                callback('permission-denied');
            }
            else {
                callback(null, event.data.chromeMediaSourceId, getScreenConstraints(null, event.data.chromeMediaSourceId));
            }
            window.removeEventListener('message', onIFrameCallback);
        }
        if (event.data.chromeExtensionStatus) {
            callback(event.data.chromeExtensionStatus, null, getScreenConstraints(event.data.chromeExtensionStatus));
            window.removeEventListener('message', onIFrameCallback);
        }
    }
    setTimeout(postGetSourceIdMessage, 100);
};
function getScreenConstraints(error, sourceId) {
    var screen_constraints = {
        audio: false,
        video: {
            mandatory: {
                chromeMediaSource: error ? 'screen' : 'desktop',
                maxWidth: window.screen.width > 1920 ? window.screen.width : 1920,
                maxHeight: window.screen.height > 1080 ? window.screen.height : 1080
            },
            optional: []
        }
    };
    if (sourceId) {
        screen_constraints.video.mandatory.chromeMediaSourceId = sourceId;
    }
    return screen_constraints;
}
var iframe;
function postGetSourceIdMessage() {
    if (!iframe) {
        loadIFrame(postGetSourceIdMessage);
        return;
    }
    if (!iframe.isLoaded) {
        setTimeout(postGetSourceIdMessage, 100);
        return;
    }
    iframe.contentWindow.postMessage({
        captureSourceId: true
    }, '*');
}
function loadIFrame(loadCallback) {
    if (iframe) {
        loadCallback();
        return;
    }
    iframe = document.createElement('iframe');
    iframe.onload = function () {
        iframe.isLoaded = true;
        loadCallback();
    };
    iframe.src = 'https://www.webrtc-experiment.com/getSourceId/';
    iframe.style.display = 'none';
    (document.body || document.documentElement).appendChild(iframe);
}
window.getChromeExtensionStatus = function (callback) {
    if (!!navigator.mozGetUserMedia) {
        callback('installed-enabled');
        return;
    }
    window.addEventListener('message', onIFrameCallback);
    function onIFrameCallback(event) {
        if (!event.data)
            return;
        if (event.data.chromeExtensionStatus) {
            callback(event.data.chromeExtensionStatus);
        }
        window.removeEventListener('message', onIFrameCallback);
    }
    setTimeout(postGetChromeExtensionStatusMessage, 100);
};
function postGetChromeExtensionStatusMessage() {
    if (!iframe) {
        loadIFrame(postGetChromeExtensionStatusMessage);
        return;
    }
    if (!iframe.isLoaded) {
        setTimeout(postGetChromeExtensionStatusMessage, 100);
        return;
    }
    iframe.contentWindow.postMessage({
        getChromeExtensionStatus: true
    }, '*');
}
exports.getScreenId = getScreenId;
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