getscreenmedia/getscreenmedia.bundle.js

!function(e){"object"==typeof exports?module.exports=e():"function"==typeof define&&define.amd?define(e):"undefined"!=typeof window?window.getScreenMedia=e():"undefined"!=typeof global?global.getScreenMedia=e():"undefined"!=typeof self&&(self.getScreenMedia=e())}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
// getScreenMedia helper by @HenrikJoreteg
var getUserMedia = require('getusermedia');

// cache for constraints and callback
var cache = {};

module.exports = function (constraints, cb) {
    var hasConstraints = arguments.length === 2;
    var callback = hasConstraints ? cb : constraints;
    var error;

    if (typeof window === 'undefined' || window.location.protocol === 'http:') {
        error = new Error('NavigatorUserMediaError');
        error.name = 'HTTPS_REQUIRED';
        return callback(error);
    }

    if (window.navigator.userAgent.match('Chrome')) { 
        var chromever = parseInt(window.navigator.userAgent.match(/Chrome\/(.*) /)[1], 10);
        var maxver = 33;
        // "known" crash in chrome 34 and 35 on linux
        if (window.navigator.userAgent.match('Linux')) maxver = 35;
        if (chromever >= 26 && chromever <= maxver) {
            // chrome 26 - chrome 33 way to do it -- requires bad chrome://flags
            // note: this is basically in maintenance mode and will go away soon
            constraints = (hasConstraints && constraints) || { 
                video: {
                    mandatory: {
                        googLeakyBucket: true,
                        maxWidth: window.screen.width,
                        maxHeight: window.screen.height,
                        maxFrameRate: 3,
                        chromeMediaSource: 'screen'
                    }
                }
            };
            getUserMedia(constraints, callback);
        } else {
            // chrome 34+ way requiring an extension
            var pending = window.setTimeout(function () {
                error = new Error('NavigatorUserMediaError');
                error.name = 'EXTENSION_UNAVAILABLE';
                return callback(error);
            }, 1000);
            cache[pending] = [callback, hasConstraints ? constraint : null];
            window.postMessage({ type: 'getScreen', id: pending }, '*');
        }
    } else if (window.navigator.userAgent.match('Firefox')) {
        var ffver = parseInt(window.navigator.userAgent.match(/Firefox\/(.*)/)[1], 10);
        if (ffver >= 33) {
            constraints = (hasConstraints && constraints) || {
                video: {
                    mozMediaSource: 'window',
                    mediaSource: 'window'
                }
            }
            getUserMedia(constraints, function (err, stream) {
                callback(err, stream);
                // workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=1045810
                if (!err) {
                    var lastTime = stream.currentTime;
                    var polly = window.setInterval(function () {
                        if (!stream) window.clearInterval(polly);
                        if (stream.currentTime == lastTime) {
                            window.clearInterval(polly);
                            if (stream.onended) {
                                stream.onended();
                            }
                        }
                        lastTime = stream.currentTime;
                    }, 500);
                }
            });
        } else {
            error = new Error('NavigatorUserMediaError');
            error.name = 'EXTENSION_UNAVAILABLE'; // does not make much sense but...
        }
    }
};

window.addEventListener('message', function (event) { 
    if (event.origin != window.location.origin) {
        return;
    }
    if (event.data.type == 'gotScreen' && cache[event.data.id]) {
        var data = cache[event.data.id];
        var constraints = data[1];
        var callback = data[0];
        delete cache[event.data.id];

        if (event.data.sourceId === '') { // user canceled
            var error = new Error('NavigatorUserMediaError');
            error.name = 'PERMISSION_DENIED';
            callback(error);
        } else {
            constraints = constraints || {audio: false, video: {
                mandatory: {
                    chromeMediaSource: 'desktop',
                    maxWidth: window.screen.width,
                    maxHeight: window.screen.height,
                    maxFrameRate: 3
                },
                optional: [
                    {googLeakyBucket: true},
                    {googTemporalLayeredScreencast: true}
                ]
            }};
            constraints.video.mandatory.chromeMediaSourceId = event.data.sourceId;
            getUserMedia(constraints, callback);
        }
    } else if (event.data.type == 'getScreenPending') {
        window.clearTimeout(event.data.id);
    }
});

},{"getusermedia":2}],2:[function(require,module,exports){
// getUserMedia helper by @HenrikJoreteg
var func = (window.navigator.getUserMedia ||
            window.navigator.webkitGetUserMedia ||
            window.navigator.mozGetUserMedia ||
            window.navigator.msGetUserMedia);


module.exports = function (constraints, cb) {
    var options;
    var haveOpts = arguments.length === 2;
    var defaultOpts = {video: true, audio: true};
    var error;
    var denied = 'PermissionDeniedError';
    var notSatified = 'ConstraintNotSatisfiedError';

    // make constraints optional
    if (!haveOpts) {
        cb = constraints;
        constraints = defaultOpts;
    }

    // treat lack of browser support like an error
    if (!func) {
        // throw proper error per spec
        error = new Error('MediaStreamError');
        error.name = 'NotSupportedError';
        return cb(error);
    }

    func.call(window.navigator, constraints, function (stream) {
        cb(null, stream);
    }, function (err) {
        var error;
        // coerce into an error object since FF gives us a string
        // there are only two valid names according to the spec
        // we coerce all non-denied to "constraint not satisfied".
        if (typeof err === 'string') {
            error = new Error('MediaStreamError');
            if (err === denied) {
                error.name = denied;
            } else {
                error.name = notSatified;
            }
        } else {
            // if we get an error object make sure '.name' property is set
            // according to spec: http://dev.w3.org/2011/webrtc/editor/getusermedia.html#navigatorusermediaerror-and-navigatorusermediaerrorcallback
            error = err;
            if (!error.name) {
                // this is likely chrome which
                // sets a property called "ERROR_DENIED" on the error object
                // if so we make sure to set a name
                if (error[denied]) {
                    err.name = denied;
                } else {
                    err.name = notSatified;
                }
            }
        }

        cb(error);
    });
};

},{}]},{},[1])
(1)
});
;