custom-metrosurvey-widgets
Version:
Custom widgets for the SurveyJS library
6,749 lines • 571 kB
JavaScript
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if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory();
else if(typeof define === 'function' && define.amd)
define("widgets/microphone", [], factory);
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/***/ "./node_modules/process/browser.js":
/*!*****************************************!*\
!*** ./node_modules/process/browser.js ***!
\*****************************************/
/*! no static exports found */
/***/ (function(module, exports) {
// shim for using process in browser
var process = module.exports = {};
// cached from whatever global is present so that test runners that stub it
// don't break things. But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals. It's inside a
// function because try/catches deoptimize in certain engines.
var cachedSetTimeout;
var cachedClearTimeout;
function defaultSetTimout() {
throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
throw new Error('clearTimeout has not been defined');
}
(function () {
try {
if (typeof setTimeout === 'function') {
cachedSetTimeout = setTimeout;
} else {
cachedSetTimeout = defaultSetTimout;
}
} catch (e) {
cachedSetTimeout = defaultSetTimout;
}
try {
if (typeof clearTimeout === 'function') {
cachedClearTimeout = clearTimeout;
} else {
cachedClearTimeout = defaultClearTimeout;
}
} catch (e) {
cachedClearTimeout = defaultClearTimeout;
}
} ())
function runTimeout(fun) {
if (cachedSetTimeout === setTimeout) {
//normal enviroments in sane situations
return setTimeout(fun, 0);
}
// if setTimeout wasn't available but was latter defined
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
cachedSetTimeout = setTimeout;
return setTimeout(fun, 0);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedSetTimeout(fun, 0);
} catch(e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedSetTimeout.call(null, fun, 0);
} catch(e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
return cachedSetTimeout.call(this, fun, 0);
}
}
}
function runClearTimeout(marker) {
if (cachedClearTimeout === clearTimeout) {
//normal enviroments in sane situations
return clearTimeout(marker);
}
// if clearTimeout wasn't available but was latter defined
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
cachedClearTimeout = clearTimeout;
return clearTimeout(marker);
}
try {
// when when somebody has screwed with setTimeout but no I.E. maddness
return cachedClearTimeout(marker);
} catch (e){
try {
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
return cachedClearTimeout.call(null, marker);
} catch (e){
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
// Some versions of I.E. have different rules for clearTimeout vs setTimeout
return cachedClearTimeout.call(this, marker);
}
}
}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;
function cleanUpNextTick() {
if (!draining || !currentQueue) {
return;
}
draining = false;
if (currentQueue.length) {
queue = currentQueue.concat(queue);
} else {
queueIndex = -1;
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if (queue.length) {
drainQueue();
}
}
function drainQueue() {
if (draining) {
return;
}
var timeout = runTimeout(cleanUpNextTick);
draining = true;
var len = queue.length;
while(len) {
currentQueue = queue;
queue = [];
while (++queueIndex < len) {
if (currentQueue) {
currentQueue[queueIndex].run();
}
}
queueIndex = -1;
len = queue.length;
}
currentQueue = null;
draining = false;
runClearTimeout(timeout);
}
process.nextTick = function (fun) {
var args = new Array(arguments.length - 1);
if (arguments.length > 1) {
for (var i = 1; i < arguments.length; i++) {
args[i - 1] = arguments[i];
}
}
queue.push(new Item(fun, args));
if (queue.length === 1 && !draining) {
runTimeout(drainQueue);
}
};
// v8 likes predictible objects
function Item(fun, array) {
this.fun = fun;
this.array = array;
}
Item.prototype.run = function () {
this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};
function noop() {}
process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;
process.listeners = function (name) { return [] }
process.binding = function (name) {
throw new Error('process.binding is not supported');
};
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };
/***/ }),
/***/ "./node_modules/recordrtc/RecordRTC.js":
/*!*********************************************!*\
!*** ./node_modules/recordrtc/RecordRTC.js ***!
\*********************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
"use strict";
/* WEBPACK VAR INJECTION */(function(global, process) {var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;
// Last time updated: 2021-03-09 3:20:22 AM UTC
// ________________
// RecordRTC v5.6.2
// Open-Sourced: https://github.com/muaz-khan/RecordRTC
// --------------------------------------------------
// Muaz Khan - www.MuazKhan.com
// MIT License - www.WebRTC-Experiment.com/licence
// --------------------------------------------------
// ____________
// RecordRTC.js
/**
* {@link https://github.com/muaz-khan/RecordRTC|RecordRTC} is a WebRTC JavaScript library for audio/video as well as screen activity recording. It supports Chrome, Firefox, Opera, Android, and Microsoft Edge. Platforms: Linux, Mac and Windows.
* @summary Record audio, video or screen inside the browser.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef RecordRTC
* @class
* @example
* var recorder = RecordRTC(mediaStream or [arrayOfMediaStream], {
* type: 'video', // audio or video or gif or canvas
* recorderType: MediaStreamRecorder || CanvasRecorder || StereoAudioRecorder || Etc
* });
* recorder.startRecording();
* @see For further information:
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {MediaStream} mediaStream - Single media-stream object, array of media-streams, html-canvas-element, etc.
* @param {object} config - {type:"video", recorderType: MediaStreamRecorder, disableLogs: true, numberOfAudioChannels: 1, bufferSize: 0, sampleRate: 0, desiredSampRate: 16000, video: HTMLVideoElement, etc.}
*/
function RecordRTC(mediaStream, config) {
if (!mediaStream) {
throw 'First parameter is required.';
}
config = config || {
type: 'video'
};
config = new RecordRTCConfiguration(mediaStream, config);
// a reference to user's recordRTC object
var self = this;
function startRecording(config2) {
if (!config.disableLogs) {
console.log('RecordRTC version: ', self.version);
}
if (!!config2) {
// allow users to set options using startRecording method
// config2 is similar to main "config" object (second parameter over RecordRTC constructor)
config = new RecordRTCConfiguration(mediaStream, config2);
}
if (!config.disableLogs) {
console.log('started recording ' + config.type + ' stream.');
}
if (mediaRecorder) {
mediaRecorder.clearRecordedData();
mediaRecorder.record();
setState('recording');
if (self.recordingDuration) {
handleRecordingDuration();
}
return self;
}
initRecorder(function() {
if (self.recordingDuration) {
handleRecordingDuration();
}
});
return self;
}
function initRecorder(initCallback) {
if (initCallback) {
config.initCallback = function() {
initCallback();
initCallback = config.initCallback = null; // recorder.initRecorder should be call-backed once.
};
}
var Recorder = new GetRecorderType(mediaStream, config);
mediaRecorder = new Recorder(mediaStream, config);
mediaRecorder.record();
setState('recording');
if (!config.disableLogs) {
console.log('Initialized recorderType:', mediaRecorder.constructor.name, 'for output-type:', config.type);
}
}
function stopRecording(callback) {
callback = callback || function() {};
if (!mediaRecorder) {
warningLog();
return;
}
if (self.state === 'paused') {
self.resumeRecording();
setTimeout(function() {
stopRecording(callback);
}, 1);
return;
}
if (self.state !== 'recording' && !config.disableLogs) {
console.warn('Recording state should be: "recording", however current state is: ', self.state);
}
if (!config.disableLogs) {
console.log('Stopped recording ' + config.type + ' stream.');
}
if (config.type !== 'gif') {
mediaRecorder.stop(_callback);
} else {
mediaRecorder.stop();
_callback();
}
setState('stopped');
function _callback(__blob) {
if (!mediaRecorder) {
if (typeof callback.call === 'function') {
callback.call(self, '');
} else {
callback('');
}
return;
}
Object.keys(mediaRecorder).forEach(function(key) {
if (typeof mediaRecorder[key] === 'function') {
return;
}
self[key] = mediaRecorder[key];
});
var blob = mediaRecorder.blob;
if (!blob) {
if (__blob) {
mediaRecorder.blob = blob = __blob;
} else {
throw 'Recording failed.';
}
}
if (blob && !config.disableLogs) {
console.log(blob.type, '->', bytesToSize(blob.size));
}
if (callback) {
var url;
try {
url = URL.createObjectURL(blob);
} catch (e) {}
if (typeof callback.call === 'function') {
callback.call(self, url);
} else {
callback(url);
}
}
if (!config.autoWriteToDisk) {
return;
}
getDataURL(function(dataURL) {
var parameter = {};
parameter[config.type + 'Blob'] = dataURL;
DiskStorage.Store(parameter);
});
}
}
function pauseRecording() {
if (!mediaRecorder) {
warningLog();
return;
}
if (self.state !== 'recording') {
if (!config.disableLogs) {
console.warn('Unable to pause the recording. Recording state: ', self.state);
}
return;
}
setState('paused');
mediaRecorder.pause();
if (!config.disableLogs) {
console.log('Paused recording.');
}
}
function resumeRecording() {
if (!mediaRecorder) {
warningLog();
return;
}
if (self.state !== 'paused') {
if (!config.disableLogs) {
console.warn('Unable to resume the recording. Recording state: ', self.state);
}
return;
}
setState('recording');
// not all libs have this method yet
mediaRecorder.resume();
if (!config.disableLogs) {
console.log('Resumed recording.');
}
}
function readFile(_blob) {
postMessage(new FileReaderSync().readAsDataURL(_blob));
}
function getDataURL(callback, _mediaRecorder) {
if (!callback) {
throw 'Pass a callback function over getDataURL.';
}
var blob = _mediaRecorder ? _mediaRecorder.blob : (mediaRecorder || {}).blob;
if (!blob) {
if (!config.disableLogs) {
console.warn('Blob encoder did not finish its job yet.');
}
setTimeout(function() {
getDataURL(callback, _mediaRecorder);
}, 1000);
return;
}
if (typeof Worker !== 'undefined' && !navigator.mozGetUserMedia) {
var webWorker = processInWebWorker(readFile);
webWorker.onmessage = function(event) {
callback(event.data);
};
webWorker.postMessage(blob);
} else {
var reader = new FileReader();
reader.readAsDataURL(blob);
reader.onload = function(event) {
callback(event.target.result);
};
}
function processInWebWorker(_function) {
try {
var blob = URL.createObjectURL(new Blob([_function.toString(),
'this.onmessage = function (eee) {' + _function.name + '(eee.data);}'
], {
type: 'application/javascript'
}));
var worker = new Worker(blob);
URL.revokeObjectURL(blob);
return worker;
} catch (e) {}
}
}
function handleRecordingDuration(counter) {
counter = counter || 0;
if (self.state === 'paused') {
setTimeout(function() {
handleRecordingDuration(counter);
}, 1000);
return;
}
if (self.state === 'stopped') {
return;
}
if (counter >= self.recordingDuration) {
stopRecording(self.onRecordingStopped);
return;
}
counter += 1000; // 1-second
setTimeout(function() {
handleRecordingDuration(counter);
}, 1000);
}
function setState(state) {
if (!self) {
return;
}
self.state = state;
if (typeof self.onStateChanged.call === 'function') {
self.onStateChanged.call(self, state);
} else {
self.onStateChanged(state);
}
}
var WARNING = 'It seems that recorder is destroyed or "startRecording" is not invoked for ' + config.type + ' recorder.';
function warningLog() {
if (config.disableLogs === true) {
return;
}
console.warn(WARNING);
}
var mediaRecorder;
var returnObject = {
/**
* This method starts the recording.
* @method
* @memberof RecordRTC
* @instance
* @example
* var recorder = RecordRTC(mediaStream, {
* type: 'video'
* });
* recorder.startRecording();
*/
startRecording: startRecording,
/**
* This method stops the recording. It is strongly recommended to get "blob" or "URI" inside the callback to make sure all recorders finished their job.
* @param {function} callback - Callback to get the recorded blob.
* @method
* @memberof RecordRTC
* @instance
* @example
* recorder.stopRecording(function() {
* // use either "this" or "recorder" object; both are identical
* video.src = this.toURL();
* var blob = this.getBlob();
* });
*/
stopRecording: stopRecording,
/**
* This method pauses the recording. You can resume recording using "resumeRecording" method.
* @method
* @memberof RecordRTC
* @instance
* @todo Firefox is unable to pause the recording. Fix it.
* @example
* recorder.pauseRecording(); // pause the recording
* recorder.resumeRecording(); // resume again
*/
pauseRecording: pauseRecording,
/**
* This method resumes the recording.
* @method
* @memberof RecordRTC
* @instance
* @example
* recorder.pauseRecording(); // first of all, pause the recording
* recorder.resumeRecording(); // now resume it
*/
resumeRecording: resumeRecording,
/**
* This method initializes the recording.
* @method
* @memberof RecordRTC
* @instance
* @todo This method should be deprecated.
* @example
* recorder.initRecorder();
*/
initRecorder: initRecorder,
/**
* Ask RecordRTC to auto-stop the recording after 5 minutes.
* @method
* @memberof RecordRTC
* @instance
* @example
* var fiveMinutes = 5 * 1000 * 60;
* recorder.setRecordingDuration(fiveMinutes, function() {
* var blob = this.getBlob();
* video.src = this.toURL();
* });
*
* // or otherwise
* recorder.setRecordingDuration(fiveMinutes).onRecordingStopped(function() {
* var blob = this.getBlob();
* video.src = this.toURL();
* });
*/
setRecordingDuration: function(recordingDuration, callback) {
if (typeof recordingDuration === 'undefined') {
throw 'recordingDuration is required.';
}
if (typeof recordingDuration !== 'number') {
throw 'recordingDuration must be a number.';
}
self.recordingDuration = recordingDuration;
self.onRecordingStopped = callback || function() {};
return {
onRecordingStopped: function(callback) {
self.onRecordingStopped = callback;
}
};
},
/**
* This method can be used to clear/reset all the recorded data.
* @method
* @memberof RecordRTC
* @instance
* @todo Figure out the difference between "reset" and "clearRecordedData" methods.
* @example
* recorder.clearRecordedData();
*/
clearRecordedData: function() {
if (!mediaRecorder) {
warningLog();
return;
}
mediaRecorder.clearRecordedData();
if (!config.disableLogs) {
console.log('Cleared old recorded data.');
}
},
/**
* Get the recorded blob. Use this method inside the "stopRecording" callback.
* @method
* @memberof RecordRTC
* @instance
* @example
* recorder.stopRecording(function() {
* var blob = this.getBlob();
*
* var file = new File([blob], 'filename.webm', {
* type: 'video/webm'
* });
*
* var formData = new FormData();
* formData.append('file', file); // upload "File" object rather than a "Blob"
* uploadToServer(formData);
* });
* @returns {Blob} Returns recorded data as "Blob" object.
*/
getBlob: function() {
if (!mediaRecorder) {
warningLog();
return;
}
return mediaRecorder.blob;
},
/**
* Get data-URI instead of Blob.
* @param {function} callback - Callback to get the Data-URI.
* @method
* @memberof RecordRTC
* @instance
* @example
* recorder.stopRecording(function() {
* recorder.getDataURL(function(dataURI) {
* video.src = dataURI;
* });
* });
*/
getDataURL: getDataURL,
/**
* Get virtual/temporary URL. Usage of this URL is limited to current tab.
* @method
* @memberof RecordRTC
* @instance
* @example
* recorder.stopRecording(function() {
* video.src = this.toURL();
* });
* @returns {String} Returns a virtual/temporary URL for the recorded "Blob".
*/
toURL: function() {
if (!mediaRecorder) {
warningLog();
return;
}
return URL.createObjectURL(mediaRecorder.blob);
},
/**
* Get internal recording object (i.e. internal module) e.g. MutliStreamRecorder, MediaStreamRecorder, StereoAudioRecorder or WhammyRecorder etc.
* @method
* @memberof RecordRTC
* @instance
* @example
* var internalRecorder = recorder.getInternalRecorder();
* if(internalRecorder instanceof MultiStreamRecorder) {
* internalRecorder.addStreams([newAudioStream]);
* internalRecorder.resetVideoStreams([screenStream]);
* }
* @returns {Object} Returns internal recording object.
*/
getInternalRecorder: function() {
return mediaRecorder;
},
/**
* Invoke save-as dialog to save the recorded blob into your disk.
* @param {string} fileName - Set your own file name.
* @method
* @memberof RecordRTC
* @instance
* @example
* recorder.stopRecording(function() {
* this.save('file-name');
*
* // or manually:
* invokeSaveAsDialog(this.getBlob(), 'filename.webm');
* });
*/
save: function(fileName) {
if (!mediaRecorder) {
warningLog();
return;
}
invokeSaveAsDialog(mediaRecorder.blob, fileName);
},
/**
* This method gets a blob from indexed-DB storage.
* @param {function} callback - Callback to get the recorded blob.
* @method
* @memberof RecordRTC
* @instance
* @example
* recorder.getFromDisk(function(dataURL) {
* video.src = dataURL;
* });
*/
getFromDisk: function(callback) {
if (!mediaRecorder) {
warningLog();
return;
}
RecordRTC.getFromDisk(config.type, callback);
},
/**
* This method appends an array of webp images to the recorded video-blob. It takes an "array" object.
* @type {Array.<Array>}
* @param {Array} arrayOfWebPImages - Array of webp images.
* @method
* @memberof RecordRTC
* @instance
* @todo This method should be deprecated.
* @example
* var arrayOfWebPImages = [];
* arrayOfWebPImages.push({
* duration: index,
* image: 'data:image/webp;base64,...'
* });
* recorder.setAdvertisementArray(arrayOfWebPImages);
*/
setAdvertisementArray: function(arrayOfWebPImages) {
config.advertisement = [];
var length = arrayOfWebPImages.length;
for (var i = 0; i < length; i++) {
config.advertisement.push({
duration: i,
image: arrayOfWebPImages[i]
});
}
},
/**
* It is equivalent to <code class="str">"recorder.getBlob()"</code> method. Usage of "getBlob" is recommended, though.
* @property {Blob} blob - Recorded Blob can be accessed using this property.
* @memberof RecordRTC
* @instance
* @readonly
* @example
* recorder.stopRecording(function() {
* var blob = this.blob;
*
* // below one is recommended
* var blob = this.getBlob();
* });
*/
blob: null,
/**
* This works only with {recorderType:StereoAudioRecorder}. Use this property on "stopRecording" to verify the encoder's sample-rates.
* @property {number} bufferSize - Buffer-size used to encode the WAV container
* @memberof RecordRTC
* @instance
* @readonly
* @example
* recorder.stopRecording(function() {
* alert('Recorder used this buffer-size: ' + this.bufferSize);
* });
*/
bufferSize: 0,
/**
* This works only with {recorderType:StereoAudioRecorder}. Use this property on "stopRecording" to verify the encoder's sample-rates.
* @property {number} sampleRate - Sample-rates used to encode the WAV container
* @memberof RecordRTC
* @instance
* @readonly
* @example
* recorder.stopRecording(function() {
* alert('Recorder used these sample-rates: ' + this.sampleRate);
* });
*/
sampleRate: 0,
/**
* {recorderType:StereoAudioRecorder} returns ArrayBuffer object.
* @property {ArrayBuffer} buffer - Audio ArrayBuffer, supported only in Chrome.
* @memberof RecordRTC
* @instance
* @readonly
* @example
* recorder.stopRecording(function() {
* var arrayBuffer = this.buffer;
* alert(arrayBuffer.byteLength);
* });
*/
buffer: null,
/**
* This method resets the recorder. So that you can reuse single recorder instance many times.
* @method
* @memberof RecordRTC
* @instance
* @example
* recorder.reset();
* recorder.startRecording();
*/
reset: function() {
if (self.state === 'recording' && !config.disableLogs) {
console.warn('Stop an active recorder.');
}
if (mediaRecorder && typeof mediaRecorder.clearRecordedData === 'function') {
mediaRecorder.clearRecordedData();
}
mediaRecorder = null;
setState('inactive');
self.blob = null;
},
/**
* This method is called whenever recorder's state changes. Use this as an "event".
* @property {String} state - A recorder's state can be: recording, paused, stopped or inactive.
* @method
* @memberof RecordRTC
* @instance
* @example
* recorder.onStateChanged = function(state) {
* console.log('Recorder state: ', state);
* };
*/
onStateChanged: function(state) {
if (!config.disableLogs) {
console.log('Recorder state changed:', state);
}
},
/**
* A recorder can have inactive, recording, paused or stopped states.
* @property {String} state - A recorder's state can be: recording, paused, stopped or inactive.
* @memberof RecordRTC
* @static
* @readonly
* @example
* // this looper function will keep you updated about the recorder's states.
* (function looper() {
* document.querySelector('h1').innerHTML = 'Recorder\'s state is: ' + recorder.state;
* if(recorder.state === 'stopped') return; // ignore+stop
* setTimeout(looper, 1000); // update after every 3-seconds
* })();
* recorder.startRecording();
*/
state: 'inactive',
/**
* Get recorder's readonly state.
* @method
* @memberof RecordRTC
* @example
* var state = recorder.getState();
* @returns {String} Returns recording state.
*/
getState: function() {
return self.state;
},
/**
* Destroy RecordRTC instance. Clear all recorders and objects.
* @method
* @memberof RecordRTC
* @example
* recorder.destroy();
*/
destroy: function() {
var disableLogsCache = config.disableLogs;
config = {
disableLogs: true
};
self.reset();
setState('destroyed');
returnObject = self = null;
if (Storage.AudioContextConstructor) {
Storage.AudioContextConstructor.close();
Storage.AudioContextConstructor = null;
}
config.disableLogs = disableLogsCache;
if (!config.disableLogs) {
console.log('RecordRTC is destroyed.');
}
},
/**
* RecordRTC version number
* @property {String} version - Release version number.
* @memberof RecordRTC
* @static
* @readonly
* @example
* alert(recorder.version);
*/
version: '5.6.2'
};
if (!this) {
self = returnObject;
return returnObject;
}
// if someone wants to use RecordRTC with the "new" keyword.
for (var prop in returnObject) {
this[prop] = returnObject[prop];
}
self = this;
return returnObject;
}
RecordRTC.version = '5.6.2';
if (true /* && !!module.exports*/ ) {
module.exports = RecordRTC;
}
if (true) {
!(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_RESULT__ = (function() {
return RecordRTC;
}).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__),
__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
}
RecordRTC.getFromDisk = function(type, callback) {
if (!callback) {
throw 'callback is mandatory.';
}
console.log('Getting recorded ' + (type === 'all' ? 'blobs' : type + ' blob ') + ' from disk!');
DiskStorage.Fetch(function(dataURL, _type) {
if (type !== 'all' && _type === type + 'Blob' && callback) {
callback(dataURL);
}
if (type === 'all' && callback) {
callback(dataURL, _type.replace('Blob', ''));
}
});
};
/**
* This method can be used to store recorded blobs into IndexedDB storage.
* @param {object} options - {audio: Blob, video: Blob, gif: Blob}
* @method
* @memberof RecordRTC
* @example
* RecordRTC.writeToDisk({
* audio: audioBlob,
* video: videoBlob,
* gif : gifBlob
* });
*/
RecordRTC.writeToDisk = function(options) {
console.log('Writing recorded blob(s) to disk!');
options = options || {};
if (options.audio && options.video && options.gif) {
options.audio.getDataURL(function(audioDataURL) {
options.video.getDataURL(function(videoDataURL) {
options.gif.getDataURL(function(gifDataURL) {
DiskStorage.Store({
audioBlob: audioDataURL,
videoBlob: videoDataURL,
gifBlob: gifDataURL
});
});
});
});
} else if (options.audio && options.video) {
options.audio.getDataURL(function(audioDataURL) {
options.video.getDataURL(function(videoDataURL) {
DiskStorage.Store({
audioBlob: audioDataURL,
videoBlob: videoDataURL
});
});
});
} else if (options.audio && options.gif) {
options.audio.getDataURL(function(audioDataURL) {
options.gif.getDataURL(function(gifDataURL) {
DiskStorage.Store({
audioBlob: audioDataURL,
gifBlob: gifDataURL
});
});
});
} else if (options.video && options.gif) {
options.video.getDataURL(function(videoDataURL) {
options.gif.getDataURL(function(gifDataURL) {
DiskStorage.Store({
videoBlob: videoDataURL,
gifBlob: gifDataURL
});
});
});
} else if (options.audio) {
options.audio.getDataURL(function(audioDataURL) {
DiskStorage.Store({
audioBlob: audioDataURL
});
});
} else if (options.video) {
options.video.getDataURL(function(videoDataURL) {
DiskStorage.Store({
videoBlob: videoDataURL
});
});
} else if (options.gif) {
options.gif.getDataURL(function(gifDataURL) {
DiskStorage.Store({
gifBlob: gifDataURL
});
});
}
};
// __________________________
// RecordRTC-Configuration.js
/**
* {@link RecordRTCConfiguration} is an inner/private helper for {@link RecordRTC}.
* @summary It configures the 2nd parameter passed over {@link RecordRTC} and returns a valid "config" object.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef RecordRTCConfiguration
* @class
* @example
* var options = RecordRTCConfiguration(mediaStream, options);
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.
* @param {object} config - {type:"video", disableLogs: true, numberOfAudioChannels: 1, bufferSize: 0, sampleRate: 0, video: HTMLVideoElement, getNativeBlob:true, etc.}
*/
function RecordRTCConfiguration(mediaStream, config) {
if (!config.recorderType && !config.type) {
if (!!config.audio && !!config.video) {
config.type = 'video';
} else if (!!config.audio && !config.video) {
config.type = 'audio';
}
}
if (config.recorderType && !config.type) {
if (config.recorderType === WhammyRecorder || config.recorderType === CanvasRecorder || (typeof WebAssemblyRecorder !== 'undefined' && config.recorderType === WebAssemblyRecorder)) {
config.type = 'video';
} else if (config.recorderType === GifRecorder) {
config.type = 'gif';
} else if (config.recorderType === StereoAudioRecorder) {
config.type = 'audio';
} else if (config.recorderType === MediaStreamRecorder) {
if (getTracks(mediaStream, 'audio').length && getTracks(mediaStream, 'video').length) {
config.type = 'video';
} else if (!getTracks(mediaStream, 'audio').length && getTracks(mediaStream, 'video').length) {
config.type = 'video';
} else if (getTracks(mediaStream, 'audio').length && !getTracks(mediaStream, 'video').length) {
config.type = 'audio';
} else {
// config.type = 'UnKnown';
}
}
}
if (typeof MediaStreamRecorder !== 'undefined' && typeof MediaRecorder !== 'undefined' && 'requestData' in MediaRecorder.prototype) {
if (!config.mimeType) {
config.mimeType = 'video/webm';
}
if (!config.type) {
config.type = config.mimeType.split('/')[0];
}
if (!config.bitsPerSecond) {
// config.bitsPerSecond = 128000;
}
}
// consider default type=audio
if (!config.type) {
if (config.mimeType) {
config.type = config.mimeType.split('/')[0];
}
if (!config.type) {
config.type = 'audio';
}
}
return config;
}
// __________________
// GetRecorderType.js
/**
* {@link GetRecorderType} is an inner/private helper for {@link RecordRTC}.
* @summary It returns best recorder-type available for your browser.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef GetRecorderType
* @class
* @example
* var RecorderType = GetRecorderType(options);
* var recorder = new RecorderType(options);
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.
* @param {object} config - {type:"video", disableLogs: true, numberOfAudioChannels: 1, bufferSize: 0, sampleRate: 0, video: HTMLVideoElement, etc.}
*/
function GetRecorderType(mediaStream, config) {
var recorder;
// StereoAudioRecorder can work with all three: Edge, Firefox and Chrome
// todo: detect if it is Edge, then auto use: StereoAudioRecorder
if (isChrome || isEdge || isOpera) {
// Media Stream Recording API has not been implemented in chrome yet;
// That's why using WebAudio API to record stereo audio in WAV format
recorder = StereoAudioRecorder;
}
if (typeof MediaRecorder !== 'undefined' && 'requestData' in MediaRecorder.prototype && !isChrome) {
recorder = MediaStreamRecorder;
}
// video recorder (in WebM format)
if (config.type === 'video' && (isChrome || isOpera)) {
recorder = WhammyRecorder;
if (typeof WebAssemblyRecorder !== 'undefined' && typeof ReadableStream !== 'undefined') {
recorder = WebAssemblyRecorder;
}
}
// video recorder (in Gif format)
if (config.type === 'gif') {
recorder = GifRecorder;
}
// html2canvas recording!
if (config.type === 'canvas') {
recorder = CanvasRecorder;
}
if (isMediaRecorderCompatible() && recorder !== CanvasRecorder && recorder !== GifRecorder && typeof MediaRecorder !== 'undefined' && 'requestData' in MediaRecorder.prototype) {
if (getTracks(mediaStream, 'video').length || getTracks(mediaStream, 'audio').length) {
// audio-only recording
if (config.type === 'audio') {
if (typeof MediaRecorder.isTypeSupported === 'function' && MediaRecorder.isTypeSupported('audio/webm')) {
recorder = MediaStreamRecorder;
}
// else recorder = StereoAudioRecorder;
} else {
// video or screen tracks
if (typeof MediaRecorder.isTypeSupported === 'function' && MediaRecorder.isTypeSupported('video/webm')) {
recorder = MediaStreamRecorder;
}
}
}
}
if (mediaStream instanceof Array && mediaStream.length) {
recorder = MultiStreamRecorder;
}
if (config.recorderType) {
recorder = config.recorderType;
}
if (!config.disableLogs && !!recorder && !!recorder.name) {
console.log('Using recorderType:', recorder.name || recorder.constructor.name);
}
if (!recorder && isSafari) {
recorder = MediaStreamRecorder;
}
return recorder;
}
// _____________
// MRecordRTC.js
/**
* MRecordRTC runs on top of {@link RecordRTC} to bring multiple recordings in a single place, by providing simple API.
* @summary MRecordRTC stands for "Multiple-RecordRTC".
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef MRecordRTC
* @class
* @example
* var recorder = new MRecordRTC();
* recorder.addStream(MediaStream);
* recorder.mediaType = {
* audio: true, // or StereoAudioRecorder or MediaStreamRecorder
* video: true, // or WhammyRecorder or MediaStreamRecorder or WebAssemblyRecorder or CanvasRecorder
* gif: true // or GifRecorder
* };
* // mimeType is optional and should be set only in advance cases.
* recorder.mimeType = {
* audio: 'audio/wav',
* video: 'video/webm',
* gif: 'image/gif'
* };
* recorder.startRecording();
* @see For further information:
* @see {@link https://github.com/muaz-khan/RecordRTC/tree/master/MRecordRTC|MRecordRTC Source Code}
* @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.
* @requires {@link RecordRTC}
*/
function MRecordRTC(mediaStream) {
/**
* This method attaches MediaStream object to {@link MRecordRTC}.
* @param {MediaStream} mediaStream - A MediaStream object, either fetched using getUserMedia API, or generated using captureStreamUntilEnded or WebAudio API.
* @method
* @memberof MRecordRTC
* @example
* recorder.addStream(MediaStream);
*/
this.addStream = function(_mediaStream) {
if (_mediaStream) {
mediaStream = _mediaStream;
}
};
/**
* This property can be used to set the recording type e.g. audio, or video, or gif, or canvas.
* @property {object} mediaType - {audio: true, video: true, gif: true}
* @memberof MRecordRTC
* @example
* var recorder = new MRecordRTC();
* recorder.mediaType = {
* audio: true, // TRUE or StereoAudioRecorder or MediaStreamRecorder
* video: true, // TRUE or WhammyRecorder or MediaStreamRecorder or WebAssemblyRecorder or CanvasRecorder
* gif : true // TRUE or GifRecorder
* };
*/
this.mediaType = {
audio: true,
video: true
};
/**
* This method starts recording.
* @method
* @memberof MRecordRTC
* @example
* recorder.startRecording();
*/
this.startRecording = function() {
var mediaType = this.mediaType;
var recorderType;
var mimeType = this.mimeType || {
audio: null,
video: null,
gif: null
};
if (typeof mediaType.audio !== 'function' && isMediaRecorderCompatible() && !getTracks(mediaStream, 'audio').length) {
mediaType.audio = false;
}
if (typeof mediaType.video !== 'function' && isMediaRecorderCompatible() && !getTracks(mediaStream, 'video').length) {
mediaType.video = false;
}
if (typeof mediaType.gif !== 'function' && isMediaRecorderCompatible() && !getTracks(mediaStream, 'video').length) {
mediaType.gif = false;
}
if (!mediaType.audio && !mediaType.video && !mediaType.gif) {
throw 'MediaStream must have either audio or video tracks.';
}
if (!!mediaType.audio) {
recorderType = null;
if (typeof mediaType.audio === 'function') {
recorderType = mediaType.audio;
}
this.audioRecorder = new RecordRTC(mediaStream, {
type: 'audio',
bufferSize: this.bufferSize,
sampleRate: this.sampleRate,
numberOfAudioChannels: this.numberOfAudioChannels || 2,
disableLogs: this.disableLogs,
recorderType: recorderType,
mimeType: mimeType.audio,
timeSlice: this.timeSlice,
onTimeStamp: this.onTimeStamp
});
if (!mediaType.video) {
this.audioRecorder.startRecording();
}
}
if (!!mediaType.video) {
recorderType = null;
if (typeof mediaType.video === 'function') {
recorderType = mediaType.video;
}
var newStream = mediaStream;
if (isMediaRecorderCompatible() && !!mediaType.audio && typeof mediaType.audio === 'function') {
var videoTrack = getTracks(mediaStream, 'video')[0];
if (isFirefox) {
newStream = new MediaStream();
newStream.addTrack(videoTrack);
if (recorderType && recorderType === WhammyRecorder) {
// Firefox does NOT supports webp-encoding yet
// But Firefox do supports WebAssemblyRecorder
recorderType = MediaStreamRecorder;
}
} else {
newStream = new MediaStream();
newStream.addTrack(videoTrack);
}
}
this.videoRecorder = new RecordRTC(newStream, {
type: 'video',
video: this.video,
canvas: this.canvas,
frameInterval: this.frameInterval || 10,
disableLogs: this.disableLogs,
recorderType: recorderType,
mimeType: mimeType.video,
timeSlice: this.timeSlice,
onTimeStamp: this.onTimeStamp,
workerPath: this.workerPath,
webAssemblyPath: this.webAssemblyPath,
frameRate: this.frameRate, // used by WebAssemblyRecorder; values: usually 30; accepts any.
bitrate: this.bitrate // used by WebAssemblyRecorder; values: 0 to 1000+
});
if (!mediaType.audio) {
this.videoRecorder.startRecording();
}
}
if (!!mediaType.audio && !!mediaType.video) {
var self = this;
var isSingleRecorder = isMediaRecorderCompatible() === true;
if (mediaType.audio instanceof StereoAudioRecorder && !!mediaType.video) {
isSingleRecorder = false;
} else if (mediaType.audio !== true && mediaType.video !== true && mediaType.audio !== mediaType.video) {
isSingleRecorder = false;
}
if (isSingleRecorder === true) {
self.audioRecorder = null;
self.videoRecorder.startRecording();
} else {
self.videoRecorder.initRecorder(function() {
self.audioRecorder.initRecorder(function() {
// Both recorders are ready to record things accurately
self.videoRecorder.startRecording();
self.audioRecorder.startRecording();
});
});
}
}
if (!!mediaType.gif) {
recorderType = null;
if (typeof mediaType.gif === 'function') {
recorderType = mediaType.gif;
}
this.gifRecorder = new RecordRTC(mediaStream, {
type: 'gif',
frameRate: this.frameRate || 200,
quality: this.quality || 10,
disableLogs: this.disableLogs,
recorderType: recorderType,
mimeType: mimeType.gif
});
this.gifRecorder.startRecording();
}
};
/**
* This method stops recording.
* @param {function} callback - Callback function is invoked when all encoders finished their jobs.
* @method
* @memberof MRecordRTC
* @example
* recorder.stopRecording(function(recording){
* var audioBlob = recording.audio;
* var videoBlob = recording.video;
* var gifBlob = recording.gif;
* });
*/
this.stopRecording = function(callback) {
callback = callback || function() {};
if (this.audioRecorder) {
this.audioRecorder.stopRecording(function(blobURL) {
callback(blobURL, 'audio');
});
}
if (this.videoRecorder) {
this.videoRecorder.stopRecording(function(blobURL) {
callback(blobURL, 'video');
});
}
if (this.gifRecorder) {
this.gifRecorder.stopRecording(function(blobURL) {
callback(blobURL, 'gif');
});
}
};
/**
* This method pauses recording.
* @method
* @memberof MRecordRTC
* @example
* recorder.pauseRecording();
*/
this.pauseRecording = function() {
if (this.audioRecorder) {
this.audioRecorder.pauseRecording();
}
if (this.videoRecorder) {
this.videoRecorder.pauseRecording();
}
if (this.gifRecorder) {
this.gifRecorder.pauseRecording();
}
};
/**
* This method resumes recording.
* @method
* @memberof MRecordRTC
* @example
* recorder.resumeRecording();
*/
this.resumeRecording = function() {
if (this.audioRecorder) {
this.audioRecorder.resumeRecording();
}
if (this.videoRecorder) {
this.videoRecorder.resumeRecording();
}
if (this.gifRecorder) {
this.gifRecorder.resumeRecording();
}
};
/**
* This method can be used to manually get all recorded blobs.
* @param {function} callback - All recorded blobs are passed back to the "callback" function.
* @method
* @memberof MRecordRTC
* @example
* recorder.getBlob(function(recording){
* var audioBlob = recording.audio;
* var videoBlob = recording.video;
* var gifBlob = recording.gif;
* });
* // or
* var audioBlob = recorder.getBlob().audio;
* var videoBlob = recorder.getBlob().video;
*/
this.getBlob = function(callback) {
var output = {};
if (this.audioRecorder) {
output.audio = this.audioRecorder.getBlob();
}
if (this.videoRecorder) {
output.video = this.videoRecorder.getBlob();
}
if (this.gifRecorder) {
output.gif = this.gifRecorder.getBlob();
}
if (callback) {
callback(output);
}
return output;
};
/**
* Destroy all recorder instances.
* @method
* @memberof MRecordRTC
* @example
* recorder.destroy();
*/
this.destroy = function() {
if (this.audioRecorder) {
this.audioRecorder.destroy();
this.audioRecorder = null;
}
if (this.videoRecorder) {
this.videoRecorder.destroy();
this.videoRecorder = null;
}
if (this.gifRecorder) {
this.gifRecorder.destroy();
this.gifRecorder = null;
}
};
/**
* This method can be used to manually get all recorded blobs' DataURLs.
* @param {function} callback - All recorded blobs' DataURLs are passed back to the "callback" function.
* @method
* @memberof MRecordRTC
* @example
* recorder.getDataURL(function(recording){
* var audioDataURL = recording.audio;
* var videoDataURL = recording.video;
* var gifDataURL = recording.gif;
* });
*/
this.getDataURL = function(callback) {
this.getBlob(function(blob) {
if (blob.audio && blob.video) {
getDataURL(blob.audio, function(_audioDataURL) {
getDataURL(blob.video, function(_videoDataURL) {
callback({
audio: _audioDataURL,
video: _videoDataURL
});
});
});
} else if (blob.audio) {
getDataURL(blob.audio, function(_audioDataURL) {
callback({
audio: _audioDataURL
});
});
} else if (blob.video) {
getDataURL(blob.video, function(_videoDataURL) {
callback({
video: _videoDataURL
});
});
}
});
function getDataURL(blob, callback00) {
if (typeof Worker !== 'undefined') {
var webWorker = processInWebWorker(function readFile(_blob) {
postMessage(new FileReaderSync().readAsDataURL(_blob));
});
webWorker.onmessage = function(event) {
callback00(event.data);
};
webWorker.postMessage(blob);
} else {
var reader = new FileReader();
reader.readAsDataURL(blob);
reader.onload = function(event) {
callback00(event.target.result);
};
}
}
function processInWebWorker(_function) {
var blob = URL.createObjectURL(new Blob([_function.toString(),
'this.onmessage = function (eee) {' + _function.name + '(eee.data);}'
], {
type: 'application/javascript'
}));
var worker = new Worker(blob);
var url;
if (typeof URL !== 'undefined') {
url = URL;
} else if (typeof webkitURL !== 'undefined') {
url = webkitURL;
} else {
throw 'Neither URL nor webkitURL detected.';
}
url.revokeObjectURL(blob);
return worker;
}
};
/**
* This method can be used to ask {@link MRecordRTC} to write all recorded blobs into IndexedDB storage.
* @method
* @memberof MRecordRTC
* @example
* recorder.writeToDisk();
*/
this.writeToDisk = function() {
RecordRTC.writeToDisk({
audio: this.audioRecorder,
video: this.videoRecorder,
gif: this.gifRecorder
});
};
/**
* This method can be used to invoke a save-as dialog for all recorded blobs.
* @param {object} args - {audio: 'audio-name', video: 'video-name', gif: 'gif-name'}
* @method
* @memberof MRecordRTC
* @example
* recorder.save({
* audio: 'audio-file-name',
* video: 'video-file-name',
* gif : 'gif-file-name'
* });
*/
this.save = function(args) {
args = args || {
audio: true,
video: true,
gif: true
};
if (!!args.audio && this.audioRecorder) {
this.audioRecorder.save(typeof args.audio === 'string' ? args.audio : '');
}
if (!!args.video && this.videoRecorder) {
this.videoRecorder.save(typeof args.video === 'string' ? args.video : '');
}
if (!!args.gif && this.gifRecorder) {
this.gifRecorder.save(typeof args.gif === 'string' ? args.gif : '');
}
};
}
/**
* This method can be used to get all recorded blobs from IndexedDB storage.
* @param {string} type - 'all' or 'audio' or 'video' or 'gif'
* @param {function} callback - Callback function to get all stored blobs.
* @method
* @memberof MRecordRTC
* @example
* MRecordRTC.getFromDisk('all', function(dataURL, type){
* if(type === 'audio') { }
* if(type === 'video') { }
* if(type === 'gif') { }
* });
*/
MRecordRTC.getFromDisk = RecordRTC.getFromDisk;
/**
* This method can be used to store recorded blobs into IndexedDB storage.
* @param {object} options - {audio: Blob, video: Blob, gif: Blob}
* @method
* @memberof MRecordRTC
* @example
* MRecordRTC.writeToDisk({
* audio: audioBlob,
* video: videoBlob,
* gif : gifBlob
* });
*/
MRecordRTC.writeToDisk = RecordRTC.writeToDisk;
if (typeof RecordRTC !== 'undefined') {
RecordRTC.MRecordRTC = MRecordRTC;
}
var browserFakeUserAgent = 'Fake/5.0 (FakeOS) AppleWebKit/123 (KHTML, like Gecko) Fake/12.3.4567.89 Fake/123.45';
(function(that) {
if (!that) {
return;
}
if (typeof window !== 'undefined') {
return;
}
if (typeof global === 'undefined') {
return;
}
global.navigator = {
userAgent: browserFakeUserAgent,
getUserMedia: function() {}
};
if (!global.console) {
global.console = {};
}
if (typeof global.console.log === 'undefined' || typeof global.console.error === 'undefined') {
global.console.error = global.console.log = global.console.log || function() {
console.log(arguments);
};
}
if (typeof document === 'undefined') {
/*global document:true */
that.document = {
documentElement: {
appendChild: function() {
return '';
}
}
};
document.createElement = document.captureStream = document.mozCaptureStream = function() {
var obj = {
getContext: function() {
return obj;
},
play: function() {},
pause: function() {},
drawImage: function() {},
toDataURL: function() {
return '';
},
style: {}
};
return obj;
};
that.HTMLVideoElement = function() {};
}
if (typeof location === 'undefined') {
/*global location:true */
that.location = {
protocol: 'file:',
href: '',
hash: ''
};
}
if (typeof screen === 'undefined') {
/*global screen:true */
that.screen = {
width: 0,
height: 0
};
}
if (typeof URL === 'undefined') {
/*global screen:true */
that.URL = {
createObjectURL: function() {
return '';
},
revokeObjectURL: function() {
return '';
}
};
}
/*global window:true */
that.window = global;
})(typeof global !== 'undefined' ? global : null);
// _____________________________
// Cross-Browser-Declarations.js
// animation-frame used in WebM recording
/*jshint -W079 */
var requestAnimationFrame = window.requestAnimationFrame;
if (typeof requestAnimationFrame === 'undefined') {
if (typeof webkitRequestAnimationFrame !== 'undefined') {
/*global requestAnimationFrame:true */
requestAnimationFrame = webkitRequestAnimationFrame;
} else if (typeof mozRequestAnimationFrame !== 'undefined') {
/*global requestAnimationFrame:true */
requestAnimationFrame = mozRequestAnimationFrame;
} else if (typeof msRequestAnimationFrame !== 'undefined') {
/*global requestAnimationFrame:true */
requestAnimationFrame = msRequestAnimationFrame;
} else if (typeof requestAnimationFrame === 'undefined') {
// via: https://gist.github.com/paulirish/1579671
var lastTime = 0;
/*global requestAnimationFrame:true */
requestAnimationFrame = function(callback, element) {
var currTime = new Date().getTime();
var timeToCall = Math.max(0, 16 - (currTime - lastTime));
var id = setTimeout(function() {
callback(currTime + timeToCall);
}, timeToCall);
lastTime = currTime + timeToCall;
return id;
};
}
}
/*jshint -W079 */
var cancelAnimationFrame = window.cancelAnimationFrame;
if (typeof cancelAnimationFrame === 'undefined') {
if (typeof webkitCancelAnimationFrame !== 'undefined') {
/*global cancelAnimationFrame:true */
cancelAnimationFrame = webkitCancelAnimationFrame;
} else if (typeof mozCancelAnimationFrame !== 'undefined') {
/*global cancelAnimationFrame:true */
cancelAnimationFrame = mozCancelAnimationFrame;
} else if (typeof msCancelAnimationFrame !== 'undefined') {
/*global cancelAnimationFrame:true */
cancelAnimationFrame = msCancelAnimationFrame;
} else if (typeof cancelAnimationFrame === 'undefined') {
/*global cancelAnimationFrame:true */
cancelAnimationFrame = function(id) {
clearTimeout(id);
};
}
}
// WebAudio API representer
var AudioContext = window.AudioContext;
if (typeof AudioContext === 'undefined') {
if (typeof webkitAudioContext !== 'undefined') {
/*global AudioContext:true */
AudioContext = webkitAudioContext;
}
if (typeof mozAudioContext !== 'undefined') {
/*global AudioContext:true */
AudioContext = mozAudioContext;
}
}
/*jshint -W079 */
var URL = window.URL;
if (typeof URL === 'undefined' && typeof webkitURL !== 'undefined') {
/*global URL:true */
URL = webkitURL;
}
if (typeof navigator !== 'undefined' && typeof navigator.getUserMedia === 'undefined') { // maybe window.navigator?
if (typeof navigator.webkitGetUserMedia !== 'undefined') {
navigator.getUserMedia = navigator.webkitGetUserMedia;
}
if (typeof navigator.mozGetUserMedia !== 'undefined') {
navigator.getUserMedia = navigator.mozGetUserMedia;
}
}
var isEdge = navigator.userAgent.indexOf('Edge') !== -1 && (!!navigator.msSaveBlob || !!navigator.msSaveOrOpenBlob);
var isOpera = !!window.opera || navigator.userAgent.indexOf('OPR/') !== -1;
var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') > -1 && ('netscape' in window) && / rv:/.test(navigator.userAgent);
var isChrome = (!isOpera && !isEdge && !!navigator.webkitGetUserMedia) || isElectron() || navigator.userAgent.toLowerCase().indexOf('chrome/') !== -1;
var isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);
if (isSafari && !isChrome && navigator.userAgent.indexOf('CriOS') !== -1) {
isSafari = false;
isChrome = true;
}
var MediaStream = window.MediaStream;
if (typeof MediaStream === 'undefined' && typeof webkitMediaStream !== 'undefined') {
MediaStream = webkitMediaStream;
}
/*global MediaStream:true */
if (typeof MediaStream !== 'undefined') {
// override "stop" method for all browsers
if (typeof MediaStream.prototype.stop === 'undefined') {
MediaStream.prototype.stop = function() {
this.getTracks().forEach(function(track) {
track.stop();
});
};
}
}
// below function via: http://goo.gl/B3ae8c
/**
* Return human-readable file size.
* @param {number} bytes - Pass bytes and get formatted string.
* @returns {string} - formatted string
* @example
* bytesToSize(1024*1024*5) === '5 GB'
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
*/
function bytesToSize(bytes) {
var k = 1000;
var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
if (bytes === 0) {
return '0 Bytes';
}
var i = parseInt(Math.floor(Math.log(bytes) / Math.log(k)), 10);
return (bytes / Math.pow(k, i)).toPrecision(3) + ' ' + sizes[i];
}
/**
* @param {Blob} file - File or Blob object. This parameter is required.
* @param {string} fileName - Optional file name e.g. "Recorded-Video.webm"
* @example
* invokeSaveAsDialog(blob or file, [optional] fileName);
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
*/
function invokeSaveAsDialog(file, fileName) {
if (!file) {
throw 'Blob object is required.';
}
if (!file.type) {
try {
file.type = 'video/webm';
} catch (e) {}
}
var fileExtension = (file.type || 'video/webm').split('/')[1];
if (fileExtension.indexOf(';') !== -1) {
// extended mimetype, e.g. 'video/webm;codecs=vp8,opus'
fileExtension = fileExtension.split(';')[0];
}
if (fileName && fileName.indexOf('.') !== -1) {
var splitted = fileName.split('.');
fileName = splitted[0];
fileExtension = splitted[1];
}
var fileFullName = (fileName || (Math.round(Math.random() * 9999999999) + 888888888)) + '.' + fileExtension;
if (typeof navigator.msSaveOrOpenBlob !== 'undefined') {
return navigator.msSaveOrOpenBlob(file, fileFullName);
} else if (typeof navigator.msSaveBlob !== 'undefined') {
return navigator.msSaveBlob(file, fileFullName);
}
var hyperlink = document.createElement('a');
hyperlink.href = URL.createObjectURL(file);
hyperlink.download = fileFullName;
hyperlink.style = 'display:none;opacity:0;color:transparent;';
(document.body || document.documentElement).appendChild(hyperlink);
if (typeof hyperlink.click === 'function') {
hyperlink.click();
} else {
hyperlink.target = '_blank';
hyperlink.dispatchEvent(new MouseEvent('click', {
view: window,
bubbles: true,
cancelable: true
}));
}
URL.revokeObjectURL(hyperlink.href);
}
/**
* from: https://github.com/cheton/is-electron/blob/master/index.js
**/
function isElectron() {
// Renderer process
if (typeof window !== 'undefined' && typeof window.process === 'object' && window.process.type === 'renderer') {
return true;
}
// Main process
if (typeof process !== 'undefined' && typeof process.versions === 'object' && !!process.versions.electron) {
return true;
}
// Detect the user agent when the `nodeIntegration` option is set to true
if (typeof navigator === 'object' && typeof navigator.userAgent === 'string' && navigator.userAgent.indexOf('Electron') >= 0) {
return true;
}
return false;
}
function getTracks(stream, kind) {
if (!stream || !stream.getTracks) {
return [];
}
return stream.getTracks().filter(function(t) {
return t.kind === (kind || 'audio');
});
}
function setSrcObject(stream, element) {
if ('srcObject' in element) {
element.srcObject = stream;
} else if ('mozSrcObject' in element) {
element.mozSrcObject = stream;
} else {
element.srcObject = stream;
}
}
/**
* @param {Blob} file - File or Blob object.
* @param {function} callback - Callback function.
* @example
* getSeekableBlob(blob or file, callback);
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
*/
function getSeekableBlob(inputBlob, callback) {
// EBML.js copyrights goes to: https://github.com/legokichi/ts-ebml
if (typeof EBML === 'undefined') {
throw new Error('Please link: https://www.webrtc-experiment.com/EBML.js');
}
var reader = new EBML.Reader();
var decoder = new EBML.Decoder();
var tools = EBML.tools;
var fileReader = new FileReader();
fileReader.onload = function(e) {
var ebmlElms = decoder.decode(this.result);
ebmlElms.forEach(function(element) {
reader.read(element);
});
reader.stop();
var refinedMetadataBuf = tools.makeMetadataSeekable(reader.metadatas, reader.duration, reader.cues);
var body = this.result.slice(reader.metadataSize);
var newBlob = new Blob([refinedMetadataBuf, body], {
type: 'video/webm'
});
callback(newBlob);
};
fileReader.readAsArrayBuffer(inputBlob);
}
if (typeof RecordRTC !== 'undefined') {
RecordRTC.invokeSaveAsDialog = invokeSaveAsDialog;
RecordRTC.getTracks = getTracks;
RecordRTC.getSeekableBlob = getSeekableBlob;
RecordRTC.bytesToSize = bytesToSize;
RecordRTC.isElectron = isElectron;
}
// __________ (used to handle stuff like http://goo.gl/xmE5eg) issue #129
// Storage.js
/**
* Storage is a standalone object used by {@link RecordRTC} to store reusable objects e.g. "new AudioContext".
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @example
* Storage.AudioContext === webkitAudioContext
* @property {webkitAudioContext} AudioContext - Keeps a reference to AudioContext object.
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
*/
var Storage = {};
if (typeof AudioContext !== 'undefined') {
Storage.AudioContext = AudioContext;
} else if (typeof webkitAudioContext !== 'undefined') {
Storage.AudioContext = webkitAudioContext;
}
if (typeof RecordRTC !== 'undefined') {
RecordRTC.Storage = Storage;
}
function isMediaRecorderCompatible() {
if (isFirefox || isSafari || isEdge) {
return true;
}
var nVer = navigator.appVersion;
var nAgt = navigator.userAgent;
var fullVersion = '' + parseFloat(navigator.appVersion);
var majorVersion = parseInt(navigator.appVersion, 10);
var nameOffset, verOffset, ix;
if (isChrome || isOpera) {
verOffset = nAgt.indexOf('Chrome');
fullVersion = nAgt.substring(verOffset + 7);
}
// trim the fullVersion string at semicolon/space if present
if ((ix = fullVersion.indexOf(';')) !== -1) {
fullVersion = fullVersion.substring(0, ix);
}
if ((ix = fullVersion.indexOf(' ')) !== -1) {
fullVersion = fullVersion.substring(0, ix);
}
majorVersion = parseInt('' + fullVersion, 10);
if (isNaN(majorVersion)) {
fullVersion = '' + parseFloat(navigator.appVersion);
majorVersion = parseInt(navigator.appVersion, 10);
}
return majorVersion >= 49;
}
// ______________________
// MediaStreamRecorder.js
/**
* MediaStreamRecorder is an abstraction layer for {@link https://w3c.github.io/mediacapture-record/MediaRecorder.html|MediaRecorder API}. It is used by {@link RecordRTC} to record MediaStream(s) in both Chrome and Firefox.
* @summary Runs top over {@link https://w3c.github.io/mediacapture-record/MediaRecorder.html|MediaRecorder API}.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://github.com/muaz-khan|Muaz Khan}
* @typedef MediaStreamRecorder
* @class
* @example
* var config = {
* mimeType: 'video/webm', // vp8, vp9, h264, mkv, opus/vorbis
* audioBitsPerSecond : 256 * 8 * 1024,
* videoBitsPerSecond : 256 * 8 * 1024,
* bitsPerSecond: 256 * 8 * 1024, // if this is provided, skip above two
* checkForInactiveTracks: true,
* timeSlice: 1000, // concatenate intervals based blobs
* ondataavailable: function() {} // get intervals based blobs
* }
* var recorder = new MediaStreamRecorder(mediaStream, config);
* recorder.record();
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
*
* // or
* var blob = recorder.blob;
* });
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.
* @param {object} config - {disableLogs:true, initCallback: function, mimeType: "video/webm", timeSlice: 1000}
* @throws Will throw an error if first argument "MediaStream" is missing. Also throws error if "MediaRecorder API" are not supported by the browser.
*/
function MediaStreamRecorder(mediaStream, config) {
var self = this;
if (typeof mediaStream === 'undefined') {
throw 'First argument "MediaStream" is required.';
}
if (typeof MediaRecorder === 'undefined') {
throw 'Your browser does not support the Media Recorder API. Please try other modules e.g. WhammyRecorder or StereoAudioRecorder.';
}
config = config || {
// bitsPerSecond: 256 * 8 * 1024,
mimeType: 'video/webm'
};
if (config.type === 'audio') {
if (getTracks(mediaStream, 'video').length && getTracks(mediaStream, 'audio').length) {
var stream;
if (!!navigator.mozGetUserMedia) {
stream = new MediaStream();
stream.addTrack(getTracks(mediaStream, 'audio')[0]);
} else {
// webkitMediaStream
stream = new MediaStream(getTracks(mediaStream, 'audio'));
}
mediaStream = stream;
}
if (!config.mimeType || config.mimeType.toString().toLowerCase().indexOf('audio') === -1) {
config.mimeType = isChrome ? 'audio/webm' : 'audio/ogg';
}
if (config.mimeType && config.mimeType.toString().toLowerCase() !== 'audio/ogg' && !!navigator.mozGetUserMedia) {
// forcing better codecs on Firefox (via #166)
config.mimeType = 'audio/ogg';
}
}
var arrayOfBlobs = [];
/**
* This method returns array of blobs. Use only with "timeSlice". Its useful to preview recording anytime, without using the "stop" method.
* @method
* @memberof MediaStreamRecorder
* @example
* var arrayOfBlobs = recorder.getArrayOfBlobs();
* @returns {Array} Returns array of recorded blobs.
*/
this.getArrayOfBlobs = function() {
return arrayOfBlobs;
};
/**
* This method records MediaStream.
* @method
* @memberof MediaStreamRecorder
* @example
* recorder.record();
*/
this.record = function() {
// set defaults
self.blob = null;
self.clearRecordedData();
self.timestamps = [];
allStates = [];
arrayOfBlobs = [];
var recorderHints = config;
if (!config.disableLogs) {
console.log('Passing following config over MediaRecorder API.', recorderHints);
}
if (mediaRecorder) {
// mandatory to make sure Firefox doesn't fails to record streams 3-4 times without reloading the page.
mediaRecorder = null;
}
if (isChrome && !isMediaRecorderCompatible()) {
// to support video-only recording on stable
recorderHints = 'video/vp8';
}
if (typeof MediaRecorder.isTypeSupported === 'function' && recorderHints.mimeType) {
if (!MediaRecorder.isTypeSupported(recorderHints.mimeType)) {
if (!config.disableLogs) {
console.warn('MediaRecorder API seems unable to record mimeType:', recorderHints.mimeType);
}
recorderHints.mimeType = config.type === 'audio' ? 'audio/webm' : 'video/webm';
}
}
// using MediaRecorder API here
try {
mediaRecorder = new MediaRecorder(mediaStream, recorderHints);
// reset
config.mimeType = recorderHints.mimeType;
} catch (e) {
// chrome-based fallback
mediaRecorder = new MediaRecorder(mediaStream);
}
// old hack?
if (recorderHints.mimeType && !MediaRecorder.isTypeSupported && 'canRecordMimeType' in mediaRecorder && mediaRecorder.canRecordMimeType(recorderHints.mimeType) === false) {
if (!config.disableLogs) {
console.warn('MediaRecorder API seems unable to record mimeType:', recorderHints.mimeType);
}
}
// Dispatching OnDataAvailable Handler
mediaRecorder.ondataavailable = function(e) {
if (e.data) {
allStates.push('ondataavailable: ' + bytesToSize(e.data.size));
}
if (typeof config.timeSlice === 'number') {
if (e.data && e.data.size) {
arrayOfBlobs.push(e.data);
updateTimeStamp();
if (typeof config.ondataavailable === 'function') {
// intervals based blobs
var blob = config.getNativeBlob ? e.data : new Blob([e.data], {
type: getMimeType(recorderHints)
});
config.ondataavailable(blob);
}
}
return;
}
if (!e.data || !e.data.size || e.data.size < 100 || self.blob) {
// make sure that stopRecording always getting fired
// even if there is invalid data
if (self.recordingCallback) {
self.recordingCallback(new Blob([], {
type: getMimeType(recorderHints)
}));
self.recordingCallback = null;
}
return;
}
self.blob = config.getNativeBlob ? e.data : new Blob([e.data], {
type: getMimeType(recorderHints)
});
if (self.recordingCallback) {
self.recordingCallback(self.blob);
self.recordingCallback = null;
}
};
mediaRecorder.onstart = function() {
allStates.push('started');
};
mediaRecorder.onpause = function() {
allStates.push('paused');
};
mediaRecorder.onresume = function() {
allStates.push('resumed');
};
mediaRecorder.onstop = function() {
allStates.push('stopped');
};
mediaRecorder.onerror = function(error) {
if (!error) {
return;
}
if (!error.name) {
error.name = 'UnknownError';
}
allStates.push('error: ' + error);
if (!config.disableLogs) {
// via: https://w3c.github.io/mediacapture-record/MediaRecorder.html#exception-summary
if (error.name.toString().toLowerCase().indexOf('invalidstate') !== -1) {
console.error('The MediaRecorder is not in a state in which the proposed operation is allowed to be executed.', error);
} else if (error.name.toString().toLowerCase().indexOf('notsupported') !== -1) {
console.error('MIME type (', recorderHints.mimeType, ') is not supported.', error);
} else if (error.name.toString().toLowerCase().indexOf('security') !== -1) {
console.error('MediaRecorder security error', error);
}
// older code below
else if (error.name === 'OutOfMemory') {
console.error('The UA has exhaused the available memory. User agents SHOULD provide as much additional information as possible in the message attribute.', error);
} else if (error.name === 'IllegalStreamModification') {
console.error('A modification to the stream has occurred that makes it impossible to continue recording. An example would be the addition of a Track while recording is occurring. User agents SHOULD provide as much additional information as possible in the message attribute.', error);
} else if (error.name === 'OtherRecordingError') {
console.error('Used for an fatal error other than those listed above. User agents SHOULD provide as much additional information as possible in the message attribute.', error);
} else if (error.name === 'GenericError') {
console.error('The UA cannot provide the codec or recording option that has been requested.', error);
} else {
console.error('MediaRecorder Error', error);
}
}
(function(looper) {
if (!self.manuallyStopped && mediaRecorder && mediaRecorder.state === 'inactive') {
delete config.timeslice;
// 10 minutes, enough?
mediaRecorder.start(10 * 60 * 1000);
return;
}
setTimeout(looper, 1000);
})();
if (mediaRecorder.state !== 'inactive' && mediaRecorder.state !== 'stopped') {
mediaRecorder.stop();
}
};
if (typeof config.timeSlice === 'number') {
updateTimeStamp();
mediaRecorder.start(config.timeSlice);
} else {
// default is 60 minutes; enough?
// use config => {timeSlice: 1000} otherwise
mediaRecorder.start(3.6e+6);
}
if (config.initCallback) {
config.initCallback(); // old code
}
};
/**
* @property {Array} timestamps - Array of time stamps
* @memberof MediaStreamRecorder
* @example
* console.log(recorder.timestamps);
*/
this.timestamps = [];
function updateTimeStamp() {
self.timestamps.push(new Date().getTime());
if (typeof config.onTimeStamp === 'function') {
config.onTimeStamp(self.timestamps[self.timestamps.length - 1], self.timestamps);
}
}
function getMimeType(secondObject) {
if (mediaRecorder && mediaRecorder.mimeType) {
return mediaRecorder.mimeType;
}
return secondObject.mimeType || 'video/webm';
}
/**
* This method stops recording MediaStream.
* @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.
* @method
* @memberof MediaStreamRecorder
* @example
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
* });
*/
this.stop = function(callback) {
callback = callback || function() {};
self.manuallyStopped = true; // used inside the mediaRecorder.onerror
if (!mediaRecorder) {
return;
}
this.recordingCallback = callback;
if (mediaRecorder.state === 'recording') {
mediaRecorder.stop();
}
if (typeof config.timeSlice === 'number') {
setTimeout(function() {
self.blob = new Blob(arrayOfBlobs, {
type: getMimeType(config)
});
self.recordingCallback(self.blob);
}, 100);
}
};
/**
* This method pauses the recording process.
* @method
* @memberof MediaStreamRecorder
* @example
* recorder.pause();
*/
this.pause = function() {
if (!mediaRecorder) {
return;
}
if (mediaRecorder.state === 'recording') {
mediaRecorder.pause();
}
};
/**
* This method resumes the recording process.
* @method
* @memberof MediaStreamRecorder
* @example
* recorder.resume();
*/
this.resume = function() {
if (!mediaRecorder) {
return;
}
if (mediaRecorder.state === 'paused') {
mediaRecorder.resume();
}
};
/**
* This method resets currently recorded data.
* @method
* @memberof MediaStreamRecorder
* @example
* recorder.clearRecordedData();
*/
this.clearRecordedData = function() {
if (mediaRecorder && mediaRecorder.state === 'recording') {
self.stop(clearRecordedDataCB);
}
clearRecordedDataCB();
};
function clearRecordedDataCB() {
arrayOfBlobs = [];
mediaRecorder = null;
self.timestamps = [];
}
// Reference to "MediaRecorder" object
var mediaRecorder;
/**
* Access to native MediaRecorder API
* @method
* @memberof MediaStreamRecorder
* @instance
* @example
* var internal = recorder.getInternalRecorder();
* internal.ondataavailable = function() {}; // override
* internal.stream, internal.onpause, internal.onstop, etc.
* @returns {Object} Returns internal recording object.
*/
this.getInternalRecorder = function() {
return mediaRecorder;
};
function isMediaStreamActive() {
if ('active' in mediaStream) {
if (!mediaStream.active) {
return false;
}
} else if ('ended' in mediaStream) { // old hack
if (mediaStream.ended) {
return false;
}
}
return true;
}
/**
* @property {Blob} blob - Recorded data as "Blob" object.
* @memberof MediaStreamRecorder
* @example
* recorder.stop(function() {
* var blob = recorder.blob;
* });
*/
this.blob = null;
/**
* Get MediaRecorder readonly state.
* @method
* @memberof MediaStreamRecorder
* @example
* var state = recorder.getState();
* @returns {String} Returns recording state.
*/
this.getState = function() {
if (!mediaRecorder) {
return 'inactive';
}
return mediaRecorder.state || 'inactive';
};
// list of all recording states
var allStates = [];
/**
* Get MediaRecorder all recording states.
* @method
* @memberof MediaStreamRecorder
* @example
* var state = recorder.getAllStates();
* @returns {Array} Returns all recording states
*/
this.getAllStates = function() {
return allStates;
};
// if any Track within the MediaStream is muted or not enabled at any time,
// the browser will only record black frames
// or silence since that is the content produced by the Track
// so we need to stopRecording as soon as any single track ends.
if (typeof config.checkForInactiveTracks === 'undefined') {
config.checkForInactiveTracks = false; // disable to minimize CPU usage
}
var self = this;
// this method checks if media stream is stopped
// or if any track is ended.
(function looper() {
if (!mediaRecorder || config.checkForInactiveTracks === false) {
return;
}
if (isMediaStreamActive() === false) {
if (!config.disableLogs) {
console.log('MediaStream seems stopped.');
}
self.stop();
return;
}
setTimeout(looper, 1000); // check every second
})();
// for debugging
this.name = 'MediaStreamRecorder';
this.toString = function() {
return this.name;
};
}
if (typeof RecordRTC !== 'undefined') {
RecordRTC.MediaStreamRecorder = MediaStreamRecorder;
}
// source code from: http://typedarray.org/wp-content/projects/WebAudioRecorder/script.js
// https://github.com/mattdiamond/Recorderjs#license-mit
// ______________________
// StereoAudioRecorder.js
/**
* StereoAudioRecorder is a standalone class used by {@link RecordRTC} to bring "stereo" audio-recording in chrome.
* @summary JavaScript standalone object for stereo audio recording.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef StereoAudioRecorder
* @class
* @example
* var recorder = new StereoAudioRecorder(MediaStream, {
* sampleRate: 44100,
* bufferSize: 4096
* });
* recorder.record();
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
* });
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.
* @param {object} config - {sampleRate: 44100, bufferSize: 4096, numberOfAudioChannels: 1, etc.}
*/
function StereoAudioRecorder(mediaStream, config) {
if (!getTracks(mediaStream, 'audio').length) {
throw 'Your stream has no audio tracks.';
}
config = config || {};
var self = this;
// variables
var leftchannel = [];
var rightchannel = [];
var recording = false;
var recordingLength = 0;
var jsAudioNode;
var numberOfAudioChannels = 2;
/**
* Set sample rates such as 8K or 16K. Reference: http://stackoverflow.com/a/28977136/552182
* @property {number} desiredSampRate - Desired Bits per sample * 1000
* @memberof StereoAudioRecorder
* @instance
* @example
* var recorder = StereoAudioRecorder(mediaStream, {
* desiredSampRate: 16 * 1000 // bits-per-sample * 1000
* });
*/
var desiredSampRate = config.desiredSampRate;
// backward compatibility
if (config.leftChannel === true) {
numberOfAudioChannels = 1;
}
if (config.numberOfAudioChannels === 1) {
numberOfAudioChannels = 1;
}
if (!numberOfAudioChannels || numberOfAudioChannels < 1) {
numberOfAudioChannels = 2;
}
if (!config.disableLogs) {
console.log('StereoAudioRecorder is set to record number of channels: ' + numberOfAudioChannels);
}
// if any Track within the MediaStream is muted or not enabled at any time,
// the browser will only record black frames
// or silence since that is the content produced by the Track
// so we need to stopRecording as soon as any single track ends.
if (typeof config.checkForInactiveTracks === 'undefined') {
config.checkForInactiveTracks = true;
}
function isMediaStreamActive() {
if (config.checkForInactiveTracks === false) {
// always return "true"
return true;
}
if ('active' in mediaStream) {
if (!mediaStream.active) {
return false;
}
} else if ('ended' in mediaStream) { // old hack
if (mediaStream.ended) {
return false;
}
}
return true;
}
/**
* This method records MediaStream.
* @method
* @memberof StereoAudioRecorder
* @example
* recorder.record();
*/
this.record = function() {
if (isMediaStreamActive() === false) {
throw 'Please make sure MediaStream is active.';
}
resetVariables();
isAudioProcessStarted = isPaused = false;
recording = true;
if (typeof config.timeSlice !== 'undefined') {
looper();
}
};
function mergeLeftRightBuffers(config, callback) {
function mergeAudioBuffers(config, cb) {
var numberOfAudioChannels = config.numberOfAudioChannels;
// todo: "slice(0)" --- is it causes loop? Should be removed?
var leftBuffers = config.leftBuffers.slice(0);
var rightBuffers = config.rightBuffers.slice(0);
var sampleRate = config.sampleRate;
var internalInterleavedLength = config.internalInterleavedLength;
var desiredSampRate = config.desiredSampRate;
if (numberOfAudioChannels === 2) {
leftBuffers = mergeBuffers(leftBuffers, internalInterleavedLength);
rightBuffers = mergeBuffers(rightBuffers, internalInterleavedLength);
if (desiredSampRate) {
leftBuffers = interpolateArray(leftBuffers, desiredSampRate, sampleRate);
rightBuffers = interpolateArray(rightBuffers, desiredSampRate, sampleRate);
}
}
if (numberOfAudioChannels === 1) {
leftBuffers = mergeBuffers(leftBuffers, internalInterleavedLength);
if (desiredSampRate) {
leftBuffers = interpolateArray(leftBuffers, desiredSampRate, sampleRate);
}
}
// set sample rate as desired sample rate
if (desiredSampRate) {
sampleRate = desiredSampRate;
}
// for changing the sampling rate, reference:
// http://stackoverflow.com/a/28977136/552182
function interpolateArray(data, newSampleRate, oldSampleRate) {
var fitCount = Math.round(data.length * (newSampleRate / oldSampleRate));
var newData = [];
var springFactor = Number((data.length - 1) / (fitCount - 1));
newData[0] = data[0];
for (var i = 1; i < fitCount - 1; i++) {
var tmp = i * springFactor;
var before = Number(Math.floor(tmp)).toFixed();
var after = Number(Math.ceil(tmp)).toFixed();
var atPoint = tmp - before;
newData[i] = linearInterpolate(data[before], data[after], atPoint);
}
newData[fitCount - 1] = data[data.length - 1];
return newData;
}
function linearInterpolate(before, after, atPoint) {
return before + (after - before) * atPoint;
}
function mergeBuffers(channelBuffer, rLength) {
var result = new Float64Array(rLength);
var offset = 0;
var lng = channelBuffer.length;
for (var i = 0; i < lng; i++) {
var buffer = channelBuffer[i];
result.set(buffer, offset);
offset += buffer.length;
}
return result;
}
function interleave(leftChannel, rightChannel) {
var length = leftChannel.length + rightChannel.length;
var result = new Float64Array(length);
var inputIndex = 0;
for (var index = 0; index < length;) {
result[index++] = leftChannel[inputIndex];
result[index++] = rightChannel[inputIndex];
inputIndex++;
}
return result;
}
function writeUTFBytes(view, offset, string) {
var lng = string.length;
for (var i = 0; i < lng; i++) {
view.setUint8(offset + i, string.charCodeAt(i));
}
}
// interleave both channels together
var interleaved;
if (numberOfAudioChannels === 2) {
interleaved = interleave(leftBuffers, rightBuffers);
}
if (numberOfAudioChannels === 1) {
interleaved = leftBuffers;
}
var interleavedLength = interleaved.length;
// create wav file
var resultingBufferLength = 44 + interleavedLength * 2;
var buffer = new ArrayBuffer(resultingBufferLength);
var view = new DataView(buffer);
// RIFF chunk descriptor/identifier
writeUTFBytes(view, 0, 'RIFF');
// RIFF chunk length
// changed "44" to "36" via #401
view.setUint32(4, 36 + interleavedLength * 2, true);
// RIFF type
writeUTFBytes(view, 8, 'WAVE');
// format chunk identifier
// FMT sub-chunk
writeUTFBytes(view, 12, 'fmt ');
// format chunk length
view.setUint32(16, 16, true);
// sample format (raw)
view.setUint16(20, 1, true);
// stereo (2 channels)
view.setUint16(22, numberOfAudioChannels, true);
// sample rate
view.setUint32(24, sampleRate, true);
// byte rate (sample rate * block align)
view.setUint32(28, sampleRate * numberOfAudioChannels * 2, true);
// block align (channel count * bytes per sample)
view.setUint16(32, numberOfAudioChannels * 2, true);
// bits per sample
view.setUint16(34, 16, true);
// data sub-chunk
// data chunk identifier
writeUTFBytes(view, 36, 'data');
// data chunk length
view.setUint32(40, interleavedLength * 2, true);
// write the PCM samples
var lng = interleavedLength;
var index = 44;
var volume = 1;
for (var i = 0; i < lng; i++) {
view.setInt16(index, interleaved[i] * (0x7FFF * volume), true);
index += 2;
}
if (cb) {
return cb({
buffer: buffer,
view: view
});
}
postMessage({
buffer: buffer,
view: view
});
}
if (config.noWorker) {
mergeAudioBuffers(config, function(data) {
callback(data.buffer, data.view);
});
return;
}
var webWorker = processInWebWorker(mergeAudioBuffers);
webWorker.onmessage = function(event) {
callback(event.data.buffer, event.data.view);
// release memory
URL.revokeObjectURL(webWorker.workerURL);
// kill webworker (or Chrome will kill your page after ~25 calls)
webWorker.terminate();
};
webWorker.postMessage(config);
}
function processInWebWorker(_function) {
var workerURL = URL.createObjectURL(new Blob([_function.toString(),
';this.onmessage = function (eee) {' + _function.name + '(eee.data);}'
], {
type: 'application/javascript'
}));
var worker = new Worker(workerURL);
worker.workerURL = workerURL;
return worker;
}
/**
* This method stops recording MediaStream.
* @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.
* @method
* @memberof StereoAudioRecorder
* @example
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
* });
*/
this.stop = function(callback) {
callback = callback || function() {};
// stop recording
recording = false;
mergeLeftRightBuffers({
desiredSampRate: desiredSampRate,
sampleRate: sampleRate,
numberOfAudioChannels: numberOfAudioChannels,
internalInterleavedLength: recordingLength,
leftBuffers: leftchannel,
rightBuffers: numberOfAudioChannels === 1 ? [] : rightchannel,
noWorker: config.noWorker
}, function(buffer, view) {
/**
* @property {Blob} blob - The recorded blob object.
* @memberof StereoAudioRecorder
* @example
* recorder.stop(function(){
* var blob = recorder.blob;
* });
*/
self.blob = new Blob([view], {
type: 'audio/wav'
});
/**
* @property {ArrayBuffer} buffer - The recorded buffer object.
* @memberof StereoAudioRecorder
* @example
* recorder.stop(function(){
* var buffer = recorder.buffer;
* });
*/
self.buffer = new ArrayBuffer(view.buffer.byteLength);
/**
* @property {DataView} view - The recorded data-view object.
* @memberof StereoAudioRecorder
* @example
* recorder.stop(function(){
* var view = recorder.view;
* });
*/
self.view = view;
self.sampleRate = desiredSampRate || sampleRate;
self.bufferSize = bufferSize;
// recorded audio length
self.length = recordingLength;
isAudioProcessStarted = false;
if (callback) {
callback(self.blob);
}
});
};
if (typeof RecordRTC.Storage === 'undefined') {
RecordRTC.Storage = {
AudioContextConstructor: null,
AudioContext: window.AudioContext || window.webkitAudioContext
};
}
if (!RecordRTC.Storage.AudioContextConstructor || RecordRTC.Storage.AudioContextConstructor.state === 'closed') {
RecordRTC.Storage.AudioContextConstructor = new RecordRTC.Storage.AudioContext();
}
var context = RecordRTC.Storage.AudioContextConstructor;
// creates an audio node from the microphone incoming stream
var audioInput = context.createMediaStreamSource(mediaStream);
var legalBufferValues = [0, 256, 512, 1024, 2048, 4096, 8192, 16384];
/**
* From the spec: This value controls how frequently the audioprocess event is
* dispatched and how many sample-frames need to be processed each call.
* Lower values for buffer size will result in a lower (better) latency.
* Higher values will be necessary to avoid audio breakup and glitches
* The size of the buffer (in sample-frames) which needs to
* be processed each time onprocessaudio is called.
* Legal values are (256, 512, 1024, 2048, 4096, 8192, 16384).
* @property {number} bufferSize - Buffer-size for how frequently the audioprocess event is dispatched.
* @memberof StereoAudioRecorder
* @example
* recorder = new StereoAudioRecorder(mediaStream, {
* bufferSize: 4096
* });
*/
// "0" means, let chrome decide the most accurate buffer-size for current platform.
var bufferSize = typeof config.bufferSize === 'undefined' ? 4096 : config.bufferSize;
if (legalBufferValues.indexOf(bufferSize) === -1) {
if (!config.disableLogs) {
console.log('Legal values for buffer-size are ' + JSON.stringify(legalBufferValues, null, '\t'));
}
}
if (context.createJavaScriptNode) {
jsAudioNode = context.createJavaScriptNode(bufferSize, numberOfAudioChannels, numberOfAudioChannels);
} else if (context.createScriptProcessor) {
jsAudioNode = context.createScriptProcessor(bufferSize, numberOfAudioChannels, numberOfAudioChannels);
} else {
throw 'WebAudio API has no support on this browser.';
}
// connect the stream to the script processor
audioInput.connect(jsAudioNode);
if (!config.bufferSize) {
bufferSize = jsAudioNode.bufferSize; // device buffer-size
}
/**
* The sample rate (in sample-frames per second) at which the
* AudioContext handles audio. It is assumed that all AudioNodes
* in the context run at this rate. In making this assumption,
* sample-rate converters or "varispeed" processors are not supported
* in real-time processing.
* The sampleRate parameter describes the sample-rate of the
* linear PCM audio data in the buffer in sample-frames per second.
* An implementation must support sample-rates in at least
* the range 22050 to 96000.
* @property {number} sampleRate - Buffer-size for how frequently the audioprocess event is dispatched.
* @memberof StereoAudioRecorder
* @example
* recorder = new StereoAudioRecorder(mediaStream, {
* sampleRate: 44100
* });
*/
var sampleRate = typeof config.sampleRate !== 'undefined' ? config.sampleRate : context.sampleRate || 44100;
if (sampleRate < 22050 || sampleRate > 96000) {
// Ref: http://stackoverflow.com/a/26303918/552182
if (!config.disableLogs) {
console.log('sample-rate must be under range 22050 and 96000.');
}
}
if (!config.disableLogs) {
if (config.desiredSampRate) {
console.log('Desired sample-rate: ' + config.desiredSampRate);
}
}
var isPaused = false;
/**
* This method pauses the recording process.
* @method
* @memberof StereoAudioRecorder
* @example
* recorder.pause();
*/
this.pause = function() {
isPaused = true;
};
/**
* This method resumes the recording process.
* @method
* @memberof StereoAudioRecorder
* @example
* recorder.resume();
*/
this.resume = function() {
if (isMediaStreamActive() === false) {
throw 'Please make sure MediaStream is active.';
}
if (!recording) {
if (!config.disableLogs) {
console.log('Seems recording has been restarted.');
}
this.record();
return;
}
isPaused = false;
};
/**
* This method resets currently recorded data.
* @method
* @memberof StereoAudioRecorder
* @example
* recorder.clearRecordedData();
*/
this.clearRecordedData = function() {
config.checkForInactiveTracks = false;
if (recording) {
this.stop(clearRecordedDataCB);
}
clearRecordedDataCB();
};
function resetVariables() {
leftchannel = [];
rightchannel = [];
recordingLength = 0;
isAudioProcessStarted = false;
recording = false;
isPaused = false;
context = null;
self.leftchannel = leftchannel;
self.rightchannel = rightchannel;
self.numberOfAudioChannels = numberOfAudioChannels;
self.desiredSampRate = desiredSampRate;
self.sampleRate = sampleRate;
self.recordingLength = recordingLength;
intervalsBasedBuffers = {
left: [],
right: [],
recordingLength: 0
};
}
function clearRecordedDataCB() {
if (jsAudioNode) {
jsAudioNode.onaudioprocess = null;
jsAudioNode.disconnect();
jsAudioNode = null;
}
if (audioInput) {
audioInput.disconnect();
audioInput = null;
}
resetVariables();
}
// for debugging
this.name = 'StereoAudioRecorder';
this.toString = function() {
return this.name;
};
var isAudioProcessStarted = false;
function onAudioProcessDataAvailable(e) {
if (isPaused) {
return;
}
if (isMediaStreamActive() === false) {
if (!config.disableLogs) {
console.log('MediaStream seems stopped.');
}
jsAudioNode.disconnect();
recording = false;
}
if (!recording) {
if (audioInput) {
audioInput.disconnect();
audioInput = null;
}
return;
}
/**
* This method is called on "onaudioprocess" event's first invocation.
* @method {function} onAudioProcessStarted
* @memberof StereoAudioRecorder
* @example
* recorder.onAudioProcessStarted: function() { };
*/
if (!isAudioProcessStarted) {
isAudioProcessStarted = true;
if (config.onAudioProcessStarted) {
config.onAudioProcessStarted();
}
if (config.initCallback) {
config.initCallback();
}
}
var left = e.inputBuffer.getChannelData(0);
// we clone the samples
var chLeft = new Float32Array(left);
leftchannel.push(chLeft);
if (numberOfAudioChannels === 2) {
var right = e.inputBuffer.getChannelData(1);
var chRight = new Float32Array(right);
rightchannel.push(chRight);
}
recordingLength += bufferSize;
// export raw PCM
self.recordingLength = recordingLength;
if (typeof config.timeSlice !== 'undefined') {
intervalsBasedBuffers.recordingLength += bufferSize;
intervalsBasedBuffers.left.push(chLeft);
if (numberOfAudioChannels === 2) {
intervalsBasedBuffers.right.push(chRight);
}
}
}
jsAudioNode.onaudioprocess = onAudioProcessDataAvailable;
// to prevent self audio to be connected with speakers
if (context.createMediaStreamDestination) {
jsAudioNode.connect(context.createMediaStreamDestination());
} else {
jsAudioNode.connect(context.destination);
}
// export raw PCM
this.leftchannel = leftchannel;
this.rightchannel = rightchannel;
this.numberOfAudioChannels = numberOfAudioChannels;
this.desiredSampRate = desiredSampRate;
this.sampleRate = sampleRate;
self.recordingLength = recordingLength;
// helper for intervals based blobs
var intervalsBasedBuffers = {
left: [],
right: [],
recordingLength: 0
};
// this looper is used to support intervals based blobs (via timeSlice+ondataavailable)
function looper() {
if (!recording || typeof config.ondataavailable !== 'function' || typeof config.timeSlice === 'undefined') {
return;
}
if (intervalsBasedBuffers.left.length) {
mergeLeftRightBuffers({
desiredSampRate: desiredSampRate,
sampleRate: sampleRate,
numberOfAudioChannels: numberOfAudioChannels,
internalInterleavedLength: intervalsBasedBuffers.recordingLength,
leftBuffers: intervalsBasedBuffers.left,
rightBuffers: numberOfAudioChannels === 1 ? [] : intervalsBasedBuffers.right
}, function(buffer, view) {
var blob = new Blob([view], {
type: 'audio/wav'
});
config.ondataavailable(blob);
setTimeout(looper, config.timeSlice);
});
intervalsBasedBuffers = {
left: [],
right: [],
recordingLength: 0
};
} else {
setTimeout(looper, config.timeSlice);
}
}
}
if (typeof RecordRTC !== 'undefined') {
RecordRTC.StereoAudioRecorder = StereoAudioRecorder;
}
// _________________
// CanvasRecorder.js
/**
* CanvasRecorder is a standalone class used by {@link RecordRTC} to bring HTML5-Canvas recording into video WebM. It uses HTML2Canvas library and runs top over {@link Whammy}.
* @summary HTML2Canvas recording into video WebM.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef CanvasRecorder
* @class
* @example
* var recorder = new CanvasRecorder(htmlElement, { disableLogs: true, useWhammyRecorder: true });
* recorder.record();
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
* });
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {HTMLElement} htmlElement - querySelector/getElementById/getElementsByTagName[0]/etc.
* @param {object} config - {disableLogs:true, initCallback: function}
*/
function CanvasRecorder(htmlElement, config) {
if (typeof html2canvas === 'undefined') {
throw 'Please link: https://www.webrtc-experiment.com/screenshot.js';
}
config = config || {};
if (!config.frameInterval) {
config.frameInterval = 10;
}
// via DetectRTC.js
var isCanvasSupportsStreamCapturing = false;
['captureStream', 'mozCaptureStream', 'webkitCaptureStream'].forEach(function(item) {
if (item in document.createElement('canvas')) {
isCanvasSupportsStreamCapturing = true;
}
});
var _isChrome = (!!window.webkitRTCPeerConnection || !!window.webkitGetUserMedia) && !!window.chrome;
var chromeVersion = 50;
var matchArray = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
if (_isChrome && matchArray && matchArray[2]) {
chromeVersion = parseInt(matchArray[2], 10);
}
if (_isChrome && chromeVersion < 52) {
isCanvasSupportsStreamCapturing = false;
}
if (config.useWhammyRecorder) {
isCanvasSupportsStreamCapturing = false;
}
var globalCanvas, mediaStreamRecorder;
if (isCanvasSupportsStreamCapturing) {
if (!config.disableLogs) {
console.log('Your browser supports both MediRecorder API and canvas.captureStream!');
}
if (htmlElement instanceof HTMLCanvasElement) {
globalCanvas = htmlElement;
} else if (htmlElement instanceof CanvasRenderingContext2D) {
globalCanvas = htmlElement.canvas;
} else {
throw 'Please pass either HTMLCanvasElement or CanvasRenderingContext2D.';
}
} else if (!!navigator.mozGetUserMedia) {
if (!config.disableLogs) {
console.error('Canvas recording is NOT supported in Firefox.');
}
}
var isRecording;
/**
* This method records Canvas.
* @method
* @memberof CanvasRecorder
* @example
* recorder.record();
*/
this.record = function() {
isRecording = true;
if (isCanvasSupportsStreamCapturing && !config.useWhammyRecorder) {
// CanvasCaptureMediaStream
var canvasMediaStream;
if ('captureStream' in globalCanvas) {
canvasMediaStream = globalCanvas.captureStream(25); // 25 FPS
} else if ('mozCaptureStream' in globalCanvas) {
canvasMediaStream = globalCanvas.mozCaptureStream(25);
} else if ('webkitCaptureStream' in globalCanvas) {
canvasMediaStream = globalCanvas.webkitCaptureStream(25);
}
try {
var mdStream = new MediaStream();
mdStream.addTrack(getTracks(canvasMediaStream, 'video')[0]);
canvasMediaStream = mdStream;
} catch (e) {}
if (!canvasMediaStream) {
throw 'captureStream API are NOT available.';
}
// Note: Jan 18, 2016 status is that,
// Firefox MediaRecorder API can't record CanvasCaptureMediaStream object.
mediaStreamRecorder = new MediaStreamRecorder(canvasMediaStream, {
mimeType: config.mimeType || 'video/webm'
});
mediaStreamRecorder.record();
} else {
whammy.frames = [];
lastTime = new Date().getTime();
drawCanvasFrame();
}
if (config.initCallback) {
config.initCallback();
}
};
this.getWebPImages = function(callback) {
if (htmlElement.nodeName.toLowerCase() !== 'canvas') {
callback();
return;
}
var framesLength = whammy.frames.length;
whammy.frames.forEach(function(frame, idx) {
var framesRemaining = framesLength - idx;
if (!config.disableLogs) {
console.log(framesRemaining + '/' + framesLength + ' frames remaining');
}
if (config.onEncodingCallback) {
config.onEncodingCallback(framesRemaining, framesLength);
}
var webp = frame.image.toDataURL('image/webp', 1);
whammy.frames[idx].image = webp;
});
if (!config.disableLogs) {
console.log('Generating WebM');
}
callback();
};
/**
* This method stops recording Canvas.
* @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.
* @method
* @memberof CanvasRecorder
* @example
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
* });
*/
this.stop = function(callback) {
isRecording = false;
var that = this;
if (isCanvasSupportsStreamCapturing && mediaStreamRecorder) {
mediaStreamRecorder.stop(callback);
return;
}
this.getWebPImages(function() {
/**
* @property {Blob} blob - Recorded frames in video/webm blob.
* @memberof CanvasRecorder
* @example
* recorder.stop(function() {
* var blob = recorder.blob;
* });
*/
whammy.compile(function(blob) {
if (!config.disableLogs) {
console.log('Recording finished!');
}
that.blob = blob;
if (that.blob.forEach) {
that.blob = new Blob([], {
type: 'video/webm'
});
}
if (callback) {
callback(that.blob);
}
whammy.frames = [];
});
});
};
var isPausedRecording = false;
/**
* This method pauses the recording process.
* @method
* @memberof CanvasRecorder
* @example
* recorder.pause();
*/
this.pause = function() {
isPausedRecording = true;
if (mediaStreamRecorder instanceof MediaStreamRecorder) {
mediaStreamRecorder.pause();
return;
}
};
/**
* This method resumes the recording process.
* @method
* @memberof CanvasRecorder
* @example
* recorder.resume();
*/
this.resume = function() {
isPausedRecording = false;
if (mediaStreamRecorder instanceof MediaStreamRecorder) {
mediaStreamRecorder.resume();
return;
}
if (!isRecording) {
this.record();
}
};
/**
* This method resets currently recorded data.
* @method
* @memberof CanvasRecorder
* @example
* recorder.clearRecordedData();
*/
this.clearRecordedData = function() {
if (isRecording) {
this.stop(clearRecordedDataCB);
}
clearRecordedDataCB();
};
function clearRecordedDataCB() {
whammy.frames = [];
isRecording = false;
isPausedRecording = false;
}
// for debugging
this.name = 'CanvasRecorder';
this.toString = function() {
return this.name;
};
function cloneCanvas() {
//create a new canvas
var newCanvas = document.createElement('canvas');
var context = newCanvas.getContext('2d');
//set dimensions
newCanvas.width = htmlElement.width;
newCanvas.height = htmlElement.height;
//apply the old canvas to the new one
context.drawImage(htmlElement, 0, 0);
//return the new canvas
return newCanvas;
}
function drawCanvasFrame() {
if (isPausedRecording) {
lastTime = new Date().getTime();
return setTimeout(drawCanvasFrame, 500);
}
if (htmlElement.nodeName.toLowerCase() === 'canvas') {
var duration = new Date().getTime() - lastTime;
// via #206, by Jack i.e. @Seymourr
lastTime = new Date().getTime();
whammy.frames.push({
image: cloneCanvas(),
duration: duration
});
if (isRecording) {
setTimeout(drawCanvasFrame, config.frameInterval);
}
return;
}
html2canvas(htmlElement, {
grabMouse: typeof config.showMousePointer === 'undefined' || config.showMousePointer,
onrendered: function(canvas) {
var duration = new Date().getTime() - lastTime;
if (!duration) {
return setTimeout(drawCanvasFrame, config.frameInterval);
}
// via #206, by Jack i.e. @Seymourr
lastTime = new Date().getTime();
whammy.frames.push({
image: canvas.toDataURL('image/webp', 1),
duration: duration
});
if (isRecording) {
setTimeout(drawCanvasFrame, config.frameInterval);
}
}
});
}
var lastTime = new Date().getTime();
var whammy = new Whammy.Video(100);
}
if (typeof RecordRTC !== 'undefined') {
RecordRTC.CanvasRecorder = CanvasRecorder;
}
// _________________
// WhammyRecorder.js
/**
* WhammyRecorder is a standalone class used by {@link RecordRTC} to bring video recording in Chrome. It runs top over {@link Whammy}.
* @summary Video recording feature in Chrome.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef WhammyRecorder
* @class
* @example
* var recorder = new WhammyRecorder(mediaStream);
* recorder.record();
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
* });
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.
* @param {object} config - {disableLogs: true, initCallback: function, video: HTMLVideoElement, etc.}
*/
function WhammyRecorder(mediaStream, config) {
config = config || {};
if (!config.frameInterval) {
config.frameInterval = 10;
}
if (!config.disableLogs) {
console.log('Using frames-interval:', config.frameInterval);
}
/**
* This method records video.
* @method
* @memberof WhammyRecorder
* @example
* recorder.record();
*/
this.record = function() {
if (!config.width) {
config.width = 320;
}
if (!config.height) {
config.height = 240;
}
if (!config.video) {
config.video = {
width: config.width,
height: config.height
};
}
if (!config.canvas) {
config.canvas = {
width: config.width,
height: config.height
};
}
canvas.width = config.canvas.width || 320;
canvas.height = config.canvas.height || 240;
context = canvas.getContext('2d');
// setting defaults
if (config.video && config.video instanceof HTMLVideoElement) {
video = config.video.cloneNode();
if (config.initCallback) {
config.initCallback();
}
} else {
video = document.createElement('video');
setSrcObject(mediaStream, video);
video.onloadedmetadata = function() { // "onloadedmetadata" may NOT work in FF?
if (config.initCallback) {
config.initCallback();
}
};
video.width = config.video.width;
video.height = config.video.height;
}
video.muted = true;
video.play();
lastTime = new Date().getTime();
whammy = new Whammy.Video();
if (!config.disableLogs) {
console.log('canvas resolutions', canvas.width, '*', canvas.height);
console.log('video width/height', video.width || canvas.width, '*', video.height || canvas.height);
}
drawFrames(config.frameInterval);
};
/**
* Draw and push frames to Whammy
* @param {integer} frameInterval - set minimum interval (in milliseconds) between each time we push a frame to Whammy
*/
function drawFrames(frameInterval) {
frameInterval = typeof frameInterval !== 'undefined' ? frameInterval : 10;
var duration = new Date().getTime() - lastTime;
if (!duration) {
return setTimeout(drawFrames, frameInterval, frameInterval);
}
if (isPausedRecording) {
lastTime = new Date().getTime();
return setTimeout(drawFrames, 100);
}
// via #206, by Jack i.e. @Seymourr
lastTime = new Date().getTime();
if (video.paused) {
// via: https://github.com/muaz-khan/WebRTC-Experiment/pull/316
// Tweak for Android Chrome
video.play();
}
context.drawImage(video, 0, 0, canvas.width, canvas.height);
whammy.frames.push({
duration: duration,
image: canvas.toDataURL('image/webp')
});
if (!isStopDrawing) {
setTimeout(drawFrames, frameInterval, frameInterval);
}
}
function asyncLoop(o) {
var i = -1,
length = o.length;
(function loop() {
i++;
if (i === length) {
o.callback();
return;
}
// "setTimeout" added by Jim McLeod
setTimeout(function() {
o.functionToLoop(loop, i);
}, 1);
})();
}
/**
* remove black frames from the beginning to the specified frame
* @param {Array} _frames - array of frames to be checked
* @param {number} _framesToCheck - number of frame until check will be executed (-1 - will drop all frames until frame not matched will be found)
* @param {number} _pixTolerance - 0 - very strict (only black pixel color) ; 1 - all
* @param {number} _frameTolerance - 0 - very strict (only black frame color) ; 1 - all
* @returns {Array} - array of frames
*/
// pull#293 by @volodalexey
function dropBlackFrames(_frames, _framesToCheck, _pixTolerance, _frameTolerance, callback) {
var localCanvas = document.createElement('canvas');
localCanvas.width = canvas.width;
localCanvas.height = canvas.height;
var context2d = localCanvas.getContext('2d');
var resultFrames = [];
var checkUntilNotBlack = _framesToCheck === -1;
var endCheckFrame = (_framesToCheck && _framesToCheck > 0 && _framesToCheck <= _frames.length) ?
_framesToCheck : _frames.length;
var sampleColor = {
r: 0,
g: 0,
b: 0
};
var maxColorDifference = Math.sqrt(
Math.pow(255, 2) +
Math.pow(255, 2) +
Math.pow(255, 2)
);
var pixTolerance = _pixTolerance && _pixTolerance >= 0 && _pixTolerance <= 1 ? _pixTolerance : 0;
var frameTolerance = _frameTolerance && _frameTolerance >= 0 && _frameTolerance <= 1 ? _frameTolerance : 0;
var doNotCheckNext = false;
asyncLoop({
length: endCheckFrame,
functionToLoop: function(loop, f) {
var matchPixCount, endPixCheck, maxPixCount;
var finishImage = function() {
if (!doNotCheckNext && maxPixCount - matchPixCount <= maxPixCount * frameTolerance) {
// console.log('removed black frame : ' + f + ' ; frame duration ' + _frames[f].duration);
} else {
// console.log('frame is passed : ' + f);
if (checkUntilNotBlack) {
doNotCheckNext = true;
}
resultFrames.push(_frames[f]);
}
loop();
};
if (!doNotCheckNext) {
var image = new Image();
image.onload = function() {
context2d.drawImage(image, 0, 0, canvas.width, canvas.height);
var imageData = context2d.getImageData(0, 0, canvas.width, canvas.height);
matchPixCount = 0;
endPixCheck = imageData.data.length;
maxPixCount = imageData.data.length / 4;
for (var pix = 0; pix < endPixCheck; pix += 4) {
var currentColor = {
r: imageData.data[pix],
g: imageData.data[pix + 1],
b: imageData.data[pix + 2]
};
var colorDifference = Math.sqrt(
Math.pow(currentColor.r - sampleColor.r, 2) +
Math.pow(currentColor.g - sampleColor.g, 2) +
Math.pow(currentColor.b - sampleColor.b, 2)
);
// difference in color it is difference in color vectors (r1,g1,b1) <=> (r2,g2,b2)
if (colorDifference <= maxColorDifference * pixTolerance) {
matchPixCount++;
}
}
finishImage();
};
image.src = _frames[f].image;
} else {
finishImage();
}
},
callback: function() {
resultFrames = resultFrames.concat(_frames.slice(endCheckFrame));
if (resultFrames.length <= 0) {
// at least one last frame should be available for next manipulation
// if total duration of all frames will be < 1000 than ffmpeg doesn't work well...
resultFrames.push(_frames[_frames.length - 1]);
}
callback(resultFrames);
}
});
}
var isStopDrawing = false;
/**
* This method stops recording video.
* @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.
* @method
* @memberof WhammyRecorder
* @example
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
* });
*/
this.stop = function(callback) {
callback = callback || function() {};
isStopDrawing = true;
var _this = this;
// analyse of all frames takes some time!
setTimeout(function() {
// e.g. dropBlackFrames(frames, 10, 1, 1) - will cut all 10 frames
// e.g. dropBlackFrames(frames, 10, 0.5, 0.5) - will analyse 10 frames
// e.g. dropBlackFrames(frames, 10) === dropBlackFrames(frames, 10, 0, 0) - will analyse 10 frames with strict black color
dropBlackFrames(whammy.frames, -1, null, null, function(frames) {
whammy.frames = frames;
// to display advertisement images!
if (config.advertisement && config.advertisement.length) {
whammy.frames = config.advertisement.concat(whammy.frames);
}
/**
* @property {Blob} blob - Recorded frames in video/webm blob.
* @memberof WhammyRecorder
* @example
* recorder.stop(function() {
* var blob = recorder.blob;
* });
*/
whammy.compile(function(blob) {
_this.blob = blob;
if (_this.blob.forEach) {
_this.blob = new Blob([], {
type: 'video/webm'
});
}
if (callback) {
callback(_this.blob);
}
});
});
}, 10);
};
var isPausedRecording = false;
/**
* This method pauses the recording process.
* @method
* @memberof WhammyRecorder
* @example
* recorder.pause();
*/
this.pause = function() {
isPausedRecording = true;
};
/**
* This method resumes the recording process.
* @method
* @memberof WhammyRecorder
* @example
* recorder.resume();
*/
this.resume = function() {
isPausedRecording = false;
if (isStopDrawing) {
this.record();
}
};
/**
* This method resets currently recorded data.
* @method
* @memberof WhammyRecorder
* @example
* recorder.clearRecordedData();
*/
this.clearRecordedData = function() {
if (!isStopDrawing) {
this.stop(clearRecordedDataCB);
}
clearRecordedDataCB();
};
function clearRecordedDataCB() {
whammy.frames = [];
isStopDrawing = true;
isPausedRecording = false;
}
// for debugging
this.name = 'WhammyRecorder';
this.toString = function() {
return this.name;
};
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
var video;
var lastTime;
var whammy;
}
if (typeof RecordRTC !== 'undefined') {
RecordRTC.WhammyRecorder = WhammyRecorder;
}
// https://github.com/antimatter15/whammy/blob/master/LICENSE
// _________
// Whammy.js
// todo: Firefox now supports webp for webm containers!
// their MediaRecorder implementation works well!
// should we provide an option to record via Whammy.js or MediaRecorder API is a better solution?
/**
* Whammy is a standalone class used by {@link RecordRTC} to bring video recording in Chrome. It is written by {@link https://github.com/antimatter15|antimatter15}
* @summary A real time javascript webm encoder based on a canvas hack.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef Whammy
* @class
* @example
* var recorder = new Whammy().Video(15);
* recorder.add(context || canvas || dataURL);
* var output = recorder.compile();
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
*/
var Whammy = (function() {
// a more abstract-ish API
function WhammyVideo(duration) {
this.frames = [];
this.duration = duration || 1;
this.quality = 0.8;
}
/**
* Pass Canvas or Context or image/webp(string) to {@link Whammy} encoder.
* @method
* @memberof Whammy
* @example
* recorder = new Whammy().Video(0.8, 100);
* recorder.add(canvas || context || 'image/webp');
* @param {string} frame - Canvas || Context || image/webp
* @param {number} duration - Stick a duration (in milliseconds)
*/
WhammyVideo.prototype.add = function(frame, duration) {
if ('canvas' in frame) { //CanvasRenderingContext2D
frame = frame.canvas;
}
if ('toDataURL' in frame) {
frame = frame.toDataURL('image/webp', this.quality);
}
if (!(/^data:image\/webp;base64,/ig).test(frame)) {
throw 'Input must be formatted properly as a base64 encoded DataURI of type image/webp';
}
this.frames.push({
image: frame,
duration: duration || this.duration
});
};
function processInWebWorker(_function) {
var blob = URL.createObjectURL(new Blob([_function.toString(),
'this.onmessage = function (eee) {' + _function.name + '(eee.data);}'
], {
type: 'application/javascript'
}));
var worker = new Worker(blob);
URL.revokeObjectURL(blob);
return worker;
}
function whammyInWebWorker(frames) {
function ArrayToWebM(frames) {
var info = checkFrames(frames);
if (!info) {
return [];
}
var clusterMaxDuration = 30000;
var EBML = [{
'id': 0x1a45dfa3, // EBML
'data': [{
'data': 1,
'id': 0x4286 // EBMLVersion
}, {
'data': 1,
'id': 0x42f7 // EBMLReadVersion
}, {
'data': 4,
'id': 0x42f2 // EBMLMaxIDLength
}, {
'data': 8,
'id': 0x42f3 // EBMLMaxSizeLength
}, {
'data': 'webm',
'id': 0x4282 // DocType
}, {
'data': 2,
'id': 0x4287 // DocTypeVersion
}, {
'data': 2,
'id': 0x4285 // DocTypeReadVersion
}]
}, {
'id': 0x18538067, // Segment
'data': [{
'id': 0x1549a966, // Info
'data': [{
'data': 1e6, //do things in millisecs (num of nanosecs for duration scale)
'id': 0x2ad7b1 // TimecodeScale
}, {
'data': 'whammy',
'id': 0x4d80 // MuxingApp
}, {
'data': 'whammy',
'id': 0x5741 // WritingApp
}, {
'data': doubleToString(info.duration),
'id': 0x4489 // Duration
}]
}, {
'id': 0x1654ae6b, // Tracks
'data': [{
'id': 0xae, // TrackEntry
'data': [{
'data': 1,
'id': 0xd7 // TrackNumber
}, {
'data': 1,
'id': 0x73c5 // TrackUID
}, {
'data': 0,
'id': 0x9c // FlagLacing
}, {
'data': 'und',
'id': 0x22b59c // Language
}, {
'data': 'V_VP8',
'id': 0x86 // CodecID
}, {
'data': 'VP8',
'id': 0x258688 // CodecName
}, {
'data': 1,
'id': 0x83 // TrackType
}, {
'id': 0xe0, // Video
'data': [{
'data': info.width,
'id': 0xb0 // PixelWidth
}, {
'data': info.height,
'id': 0xba // PixelHeight
}]
}]
}]
}]
}];
//Generate clusters (max duration)
var frameNumber = 0;
var clusterTimecode = 0;
while (frameNumber < frames.length) {
var clusterFrames = [];
var clusterDuration = 0;
do {
clusterFrames.push(frames[frameNumber]);
clusterDuration += frames[frameNumber].duration;
frameNumber++;
} while (frameNumber < frames.length && clusterDuration < clusterMaxDuration);
var clusterCounter = 0;
var cluster = {
'id': 0x1f43b675, // Cluster
'data': getClusterData(clusterTimecode, clusterCounter, clusterFrames)
}; //Add cluster to segment
EBML[1].data.push(cluster);
clusterTimecode += clusterDuration;
}
return generateEBML(EBML);
}
function getClusterData(clusterTimecode, clusterCounter, clusterFrames) {
return [{
'data': clusterTimecode,
'id': 0xe7 // Timecode
}].concat(clusterFrames.map(function(webp) {
var block = makeSimpleBlock({
discardable: 0,
frame: webp.data.slice(4),
invisible: 0,
keyframe: 1,
lacing: 0,
trackNum: 1,
timecode: Math.round(clusterCounter)
});
clusterCounter += webp.duration;
return {
data: block,
id: 0xa3
};
}));
}
// sums the lengths of all the frames and gets the duration
function checkFrames(frames) {
if (!frames[0]) {
postMessage({
error: 'Something went wrong. Maybe WebP format is not supported in the current browser.'
});
return;
}
var width = frames[0].width,
height = frames[0].height,
duration = frames[0].duration;
for (var i = 1; i < frames.length; i++) {
duration += frames[i].duration;
}
return {
duration: duration,
width: width,
height: height
};
}
function numToBuffer(num) {
var parts = [];
while (num > 0) {
parts.push(num & 0xff);
num = num >> 8;
}
return new Uint8Array(parts.reverse());
}
function strToBuffer(str) {
return new Uint8Array(str.split('').map(function(e) {
return e.charCodeAt(0);
}));
}
function bitsToBuffer(bits) {
var data = [];
var pad = (bits.length % 8) ? (new Array(1 + 8 - (bits.length % 8))).join('0') : '';
bits = pad + bits;
for (var i = 0; i < bits.length; i += 8) {
data.push(parseInt(bits.substr(i, 8), 2));
}
return new Uint8Array(data);
}
function generateEBML(json) {
var ebml = [];
for (var i = 0; i < json.length; i++) {
var data = json[i].data;
if (typeof data === 'object') {
data = generateEBML(data);
}
if (typeof data === 'number') {
data = bitsToBuffer(data.toString(2));
}
if (typeof data === 'string') {
data = strToBuffer(data);
}
var len = data.size || data.byteLength || data.length;
var zeroes = Math.ceil(Math.ceil(Math.log(len) / Math.log(2)) / 8);
var sizeToString = len.toString(2);
var padded = (new Array((zeroes * 7 + 7 + 1) - sizeToString.length)).join('0') + sizeToString;
var size = (new Array(zeroes)).join('0') + '1' + padded;
ebml.push(numToBuffer(json[i].id));
ebml.push(bitsToBuffer(size));
ebml.push(data);
}
return new Blob(ebml, {
type: 'video/webm'
});
}
function toBinStrOld(bits) {
var data = '';
var pad = (bits.length % 8) ? (new Array(1 + 8 - (bits.length % 8))).join('0') : '';
bits = pad + bits;
for (var i = 0; i < bits.length; i += 8) {
data += String.fromCharCode(parseInt(bits.substr(i, 8), 2));
}
return data;
}
function makeSimpleBlock(data) {
var flags = 0;
if (data.keyframe) {
flags |= 128;
}
if (data.invisible) {
flags |= 8;
}
if (data.lacing) {
flags |= (data.lacing << 1);
}
if (data.discardable) {
flags |= 1;
}
if (data.trackNum > 127) {
throw 'TrackNumber > 127 not supported';
}
var out = [data.trackNum | 0x80, data.timecode >> 8, data.timecode & 0xff, flags].map(function(e) {
return String.fromCharCode(e);
}).join('') + data.frame;
return out;
}
function parseWebP(riff) {
var VP8 = riff.RIFF[0].WEBP[0];
var frameStart = VP8.indexOf('\x9d\x01\x2a'); // A VP8 keyframe starts with the 0x9d012a header
for (var i = 0, c = []; i < 4; i++) {
c[i] = VP8.charCodeAt(frameStart + 3 + i);
}
var width, height, tmp;
//the code below is literally copied verbatim from the bitstream spec
tmp = (c[1] << 8) | c[0];
width = tmp & 0x3FFF;
tmp = (c[3] << 8) | c[2];
height = tmp & 0x3FFF;
return {
width: width,
height: height,
data: VP8,
riff: riff
};
}
function getStrLength(string, offset) {
return parseInt(string.substr(offset + 4, 4).split('').map(function(i) {
var unpadded = i.charCodeAt(0).toString(2);
return (new Array(8 - unpadded.length + 1)).join('0') + unpadded;
}).join(''), 2);
}
function parseRIFF(string) {
var offset = 0;
var chunks = {};
while (offset < string.length) {
var id = string.substr(offset, 4);
var len = getStrLength(string, offset);
var data = string.substr(offset + 4 + 4, len);
offset += 4 + 4 + len;
chunks[id] = chunks[id] || [];
if (id === 'RIFF' || id === 'LIST') {
chunks[id].push(parseRIFF(data));
} else {
chunks[id].push(data);
}
}
return chunks;
}
function doubleToString(num) {
return [].slice.call(
new Uint8Array((new Float64Array([num])).buffer), 0).map(function(e) {
return String.fromCharCode(e);
}).reverse().join('');
}
var webm = new ArrayToWebM(frames.map(function(frame) {
var webp = parseWebP(parseRIFF(atob(frame.image.slice(23))));
webp.duration = frame.duration;
return webp;
}));
postMessage(webm);
}
/**
* Encodes frames in WebM container. It uses WebWorkinvoke to invoke 'ArrayToWebM' method.
* @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.
* @method
* @memberof Whammy
* @example
* recorder = new Whammy().Video(0.8, 100);
* recorder.compile(function(blob) {
* // blob.size - blob.type
* });
*/
WhammyVideo.prototype.compile = function(callback) {
var webWorker = processInWebWorker(whammyInWebWorker);
webWorker.onmessage = function(event) {
if (event.data.error) {
console.error(event.data.error);
return;
}
callback(event.data);
};
webWorker.postMessage(this.frames);
};
return {
/**
* A more abstract-ish API.
* @method
* @memberof Whammy
* @example
* recorder = new Whammy().Video(0.8, 100);
* @param {?number} speed - 0.8
* @param {?number} quality - 100
*/
Video: WhammyVideo
};
})();
if (typeof RecordRTC !== 'undefined') {
RecordRTC.Whammy = Whammy;
}
// ______________ (indexed-db)
// DiskStorage.js
/**
* DiskStorage is a standalone object used by {@link RecordRTC} to store recorded blobs in IndexedDB storage.
* @summary Writing blobs into IndexedDB.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @example
* DiskStorage.Store({
* audioBlob: yourAudioBlob,
* videoBlob: yourVideoBlob,
* gifBlob : yourGifBlob
* });
* DiskStorage.Fetch(function(dataURL, type) {
* if(type === 'audioBlob') { }
* if(type === 'videoBlob') { }
* if(type === 'gifBlob') { }
* });
* // DiskStorage.dataStoreName = 'recordRTC';
* // DiskStorage.onError = function(error) { };
* @property {function} init - This method must be called once to initialize IndexedDB ObjectStore. Though, it is auto-used internally.
* @property {function} Fetch - This method fetches stored blobs from IndexedDB.
* @property {function} Store - This method stores blobs in IndexedDB.
* @property {function} onError - This function is invoked for any known/unknown error.
* @property {string} dataStoreName - Name of the ObjectStore created in IndexedDB storage.
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
*/
var DiskStorage = {
/**
* This method must be called once to initialize IndexedDB ObjectStore. Though, it is auto-used internally.
* @method
* @memberof DiskStorage
* @internal
* @example
* DiskStorage.init();
*/
init: function() {
var self = this;
if (typeof indexedDB === 'undefined' || typeof indexedDB.open === 'undefined') {
console.error('IndexedDB API are not available in this browser.');
return;
}
var dbVersion = 1;
var dbName = this.dbName || location.href.replace(/\/|:|#|%|\.|\[|\]/g, ''),
db;
var request = indexedDB.open(dbName, dbVersion);
function createObjectStore(dataBase) {
dataBase.createObjectStore(self.dataStoreName);
}
function putInDB() {
var transaction = db.transaction([self.dataStoreName], 'readwrite');
if (self.videoBlob) {
transaction.objectStore(self.dataStoreName).put(self.videoBlob, 'videoBlob');
}
if (self.gifBlob) {
transaction.objectStore(self.dataStoreName).put(self.gifBlob, 'gifBlob');
}
if (self.audioBlob) {
transaction.objectStore(self.dataStoreName).put(self.audioBlob, 'audioBlob');
}
function getFromStore(portionName) {
transaction.objectStore(self.dataStoreName).get(portionName).onsuccess = function(event) {
if (self.callback) {
self.callback(event.target.result, portionName);
}
};
}
getFromStore('audioBlob');
getFromStore('videoBlob');
getFromStore('gifBlob');
}
request.onerror = self.onError;
request.onsuccess = function() {
db = request.result;
db.onerror = self.onError;
if (db.setVersion) {
if (db.version !== dbVersion) {
var setVersion = db.setVersion(dbVersion);
setVersion.onsuccess = function() {
createObjectStore(db);
putInDB();
};
} else {
putInDB();
}
} else {
putInDB();
}
};
request.onupgradeneeded = function(event) {
createObjectStore(event.target.result);
};
},
/**
* This method fetches stored blobs from IndexedDB.
* @method
* @memberof DiskStorage
* @internal
* @example
* DiskStorage.Fetch(function(dataURL, type) {
* if(type === 'audioBlob') { }
* if(type === 'videoBlob') { }
* if(type === 'gifBlob') { }
* });
*/
Fetch: function(callback) {
this.callback = callback;
this.init();
return this;
},
/**
* This method stores blobs in IndexedDB.
* @method
* @memberof DiskStorage
* @internal
* @example
* DiskStorage.Store({
* audioBlob: yourAudioBlob,
* videoBlob: yourVideoBlob,
* gifBlob : yourGifBlob
* });
*/
Store: function(config) {
this.audioBlob = config.audioBlob;
this.videoBlob = config.videoBlob;
this.gifBlob = config.gifBlob;
this.init();
return this;
},
/**
* This function is invoked for any known/unknown error.
* @method
* @memberof DiskStorage
* @internal
* @example
* DiskStorage.onError = function(error){
* alerot( JSON.stringify(error) );
* };
*/
onError: function(error) {
console.error(JSON.stringify(error, null, '\t'));
},
/**
* @property {string} dataStoreName - Name of the ObjectStore created in IndexedDB storage.
* @memberof DiskStorage
* @internal
* @example
* DiskStorage.dataStoreName = 'recordRTC';
*/
dataStoreName: 'recordRTC',
dbName: null
};
if (typeof RecordRTC !== 'undefined') {
RecordRTC.DiskStorage = DiskStorage;
}
// ______________
// GifRecorder.js
/**
* GifRecorder is standalone calss used by {@link RecordRTC} to record video or canvas into animated gif.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef GifRecorder
* @class
* @example
* var recorder = new GifRecorder(mediaStream || canvas || context, { onGifPreview: function, onGifRecordingStarted: function, width: 1280, height: 720, frameRate: 200, quality: 10 });
* recorder.record();
* recorder.stop(function(blob) {
* img.src = URL.createObjectURL(blob);
* });
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {MediaStream} mediaStream - MediaStream object or HTMLCanvasElement or CanvasRenderingContext2D.
* @param {object} config - {disableLogs:true, initCallback: function, width: 320, height: 240, frameRate: 200, quality: 10}
*/
function GifRecorder(mediaStream, config) {
if (typeof GIFEncoder === 'undefined') {
var script = document.createElement('script');
script.src = 'https://www.webrtc-experiment.com/gif-recorder.js';
(document.body || document.documentElement).appendChild(script);
}
config = config || {};
var isHTMLObject = mediaStream instanceof CanvasRenderingContext2D || mediaStream instanceof HTMLCanvasElement;
/**
* This method records MediaStream.
* @method
* @memberof GifRecorder
* @example
* recorder.record();
*/
this.record = function() {
if (typeof GIFEncoder === 'undefined') {
setTimeout(self.record, 1000);
return;
}
if (!isLoadedMetaData) {
setTimeout(self.record, 1000);
return;
}
if (!isHTMLObject) {
if (!config.width) {
config.width = video.offsetWidth || 320;
}
if (!config.height) {
config.height = video.offsetHeight || 240;
}
if (!config.video) {
config.video = {
width: config.width,
height: config.height
};
}
if (!config.canvas) {
config.canvas = {
width: config.width,
height: config.height
};
}
canvas.width = config.canvas.width || 320;
canvas.height = config.canvas.height || 240;
video.width = config.video.width || 320;
video.height = config.video.height || 240;
}
// external library to record as GIF images
gifEncoder = new GIFEncoder();
// void setRepeat(int iter)
// Sets the number of times the set of GIF frames should be played.
// Default is 1; 0 means play indefinitely.
gifEncoder.setRepeat(0);
// void setFrameRate(Number fps)
// Sets frame rate in frames per second.
// Equivalent to setDelay(1000/fps).
// Using "setDelay" instead of "setFrameRate"
gifEncoder.setDelay(config.frameRate || 200);
// void setQuality(int quality)
// Sets quality of color quantization (conversion of images to the
// maximum 256 colors allowed by the GIF specification).
// Lower values (minimum = 1) produce better colors,
// but slow processing significantly. 10 is the default,
// and produces good color mapping at reasonable speeds.
// Values greater than 20 do not yield significant improvements in speed.
gifEncoder.setQuality(config.quality || 10);
// Boolean start()
// This writes the GIF Header and returns false if it fails.
gifEncoder.start();
if (typeof config.onGifRecordingStarted === 'function') {
config.onGifRecordingStarted();
}
startTime = Date.now();
function drawVideoFrame(time) {
if (self.clearedRecordedData === true) {
return;
}
if (isPausedRecording) {
return setTimeout(function() {
drawVideoFrame(time);
}, 100);
}
lastAnimationFrame = requestAnimationFrame(drawVideoFrame);
if (typeof lastFrameTime === undefined) {
lastFrameTime = time;
}
// ~10 fps
if (time - lastFrameTime < 90) {
return;
}
if (!isHTMLObject && video.paused) {
// via: https://github.com/muaz-khan/WebRTC-Experiment/pull/316
// Tweak for Android Chrome
video.play();
}
if (!isHTMLObject) {
context.drawImage(video, 0, 0, canvas.width, canvas.height);
}
if (config.onGifPreview) {
config.onGifPreview(canvas.toDataURL('image/png'));
}
gifEncoder.addFrame(context);
lastFrameTime = time;
}
lastAnimationFrame = requestAnimationFrame(drawVideoFrame);
if (config.initCallback) {
config.initCallback();
}
};
/**
* This method stops recording MediaStream.
* @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.
* @method
* @memberof GifRecorder
* @example
* recorder.stop(function(blob) {
* img.src = URL.createObjectURL(blob);
* });
*/
this.stop = function(callback) {
callback = callback || function() {};
if (lastAnimationFrame) {
cancelAnimationFrame(lastAnimationFrame);
}
endTime = Date.now();
/**
* @property {Blob} blob - The recorded blob object.
* @memberof GifRecorder
* @example
* recorder.stop(function(){
* var blob = recorder.blob;
* });
*/
this.blob = new Blob([new Uint8Array(gifEncoder.stream().bin)], {
type: 'image/gif'
});
callback(this.blob);
// bug: find a way to clear old recorded blobs
gifEncoder.stream().bin = [];
};
var isPausedRecording = false;
/**
* This method pauses the recording process.
* @method
* @memberof GifRecorder
* @example
* recorder.pause();
*/
this.pause = function() {
isPausedRecording = true;
};
/**
* This method resumes the recording process.
* @method
* @memberof GifRecorder
* @example
* recorder.resume();
*/
this.resume = function() {
isPausedRecording = false;
};
/**
* This method resets currently recorded data.
* @method
* @memberof GifRecorder
* @example
* recorder.clearRecordedData();
*/
this.clearRecordedData = function() {
self.clearedRecordedData = true;
clearRecordedDataCB();
};
function clearRecordedDataCB() {
if (gifEncoder) {
gifEncoder.stream().bin = [];
}
}
// for debugging
this.name = 'GifRecorder';
this.toString = function() {
return this.name;
};
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
if (isHTMLObject) {
if (mediaStream instanceof CanvasRenderingContext2D) {
context = mediaStream;
canvas = context.canvas;
} else if (mediaStream instanceof HTMLCanvasElement) {
context = mediaStream.getContext('2d');
canvas = mediaStream;
}
}
var isLoadedMetaData = true;
if (!isHTMLObject) {
var video = document.createElement('video');
video.muted = true;
video.autoplay = true;
video.playsInline = true;
isLoadedMetaData = false;
video.onloadedmetadata = function() {
isLoadedMetaData = true;
};
setSrcObject(mediaStream, video);
video.play();
}
var lastAnimationFrame = null;
var startTime, endTime, lastFrameTime;
var gifEncoder;
var self = this;
}
if (typeof RecordRTC !== 'undefined') {
RecordRTC.GifRecorder = GifRecorder;
}
// Last time updated: 2019-06-21 4:09:42 AM UTC
// ________________________
// MultiStreamsMixer v1.2.2
// Open-Sourced: https://github.com/muaz-khan/MultiStreamsMixer
// --------------------------------------------------
// Muaz Khan - www.MuazKhan.com
// MIT License - www.WebRTC-Experiment.com/licence
// --------------------------------------------------
function MultiStreamsMixer(arrayOfMediaStreams, elementClass) {
var browserFakeUserAgent = 'Fake/5.0 (FakeOS) AppleWebKit/123 (KHTML, like Gecko) Fake/12.3.4567.89 Fake/123.45';
(function(that) {
if (typeof RecordRTC !== 'undefined') {
return;
}
if (!that) {
return;
}
if (typeof window !== 'undefined') {
return;
}
if (typeof global === 'undefined') {
return;
}
global.navigator = {
userAgent: browserFakeUserAgent,
getUserMedia: function() {}
};
if (!global.console) {
global.console = {};
}
if (typeof global.console.log === 'undefined' || typeof global.console.error === 'undefined') {
global.console.error = global.console.log = global.console.log || function() {
console.log(arguments);
};
}
if (typeof document === 'undefined') {
/*global document:true */
that.document = {
documentElement: {
appendChild: function() {
return '';
}
}
};
document.createElement = document.captureStream = document.mozCaptureStream = function() {
var obj = {
getContext: function() {
return obj;
},
play: function() {},
pause: function() {},
drawImage: function() {},
toDataURL: function() {
return '';
},
style: {}
};
return obj;
};
that.HTMLVideoElement = function() {};
}
if (typeof location === 'undefined') {
/*global location:true */
that.location = {
protocol: 'file:',
href: '',
hash: ''
};
}
if (typeof screen === 'undefined') {
/*global screen:true */
that.screen = {
width: 0,
height: 0
};
}
if (typeof URL === 'undefined') {
/*global screen:true */
that.URL = {
createObjectURL: function() {
return '';
},
revokeObjectURL: function() {
return '';
}
};
}
/*global window:true */
that.window = global;
})(typeof global !== 'undefined' ? global : null);
// requires: chrome://flags/#enable-experimental-web-platform-features
elementClass = elementClass || 'multi-streams-mixer';
var videos = [];
var isStopDrawingFrames = false;
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
canvas.style.opacity = 0;
canvas.style.position = 'absolute';
canvas.style.zIndex = -1;
canvas.style.top = '-1000em';
canvas.style.left = '-1000em';
canvas.className = elementClass;
(document.body || document.documentElement).appendChild(canvas);
this.disableLogs = false;
this.frameInterval = 10;
this.width = 360;
this.height = 240;
// use gain node to prevent echo
this.useGainNode = true;
var self = this;
// _____________________________
// Cross-Browser-Declarations.js
// WebAudio API representer
var AudioContext = window.AudioContext;
if (typeof AudioContext === 'undefined') {
if (typeof webkitAudioContext !== 'undefined') {
/*global AudioContext:true */
AudioContext = webkitAudioContext;
}
if (typeof mozAudioContext !== 'undefined') {
/*global AudioContext:true */
AudioContext = mozAudioContext;
}
}
/*jshint -W079 */
var URL = window.URL;
if (typeof URL === 'undefined' && typeof webkitURL !== 'undefined') {
/*global URL:true */
URL = webkitURL;
}
if (typeof navigator !== 'undefined' && typeof navigator.getUserMedia === 'undefined') { // maybe window.navigator?
if (typeof navigator.webkitGetUserMedia !== 'undefined') {
navigator.getUserMedia = navigator.webkitGetUserMedia;
}
if (typeof navigator.mozGetUserMedia !== 'undefined') {
navigator.getUserMedia = navigator.mozGetUserMedia;
}
}
var MediaStream = window.MediaStream;
if (typeof MediaStream === 'undefined' && typeof webkitMediaStream !== 'undefined') {
MediaStream = webkitMediaStream;
}
/*global MediaStream:true */
if (typeof MediaStream !== 'undefined') {
// override "stop" method for all browsers
if (typeof MediaStream.prototype.stop === 'undefined') {
MediaStream.prototype.stop = function() {
this.getTracks().forEach(function(track) {
track.stop();
});
};
}
}
var Storage = {};
if (typeof AudioContext !== 'undefined') {
Storage.AudioContext = AudioContext;
} else if (typeof webkitAudioContext !== 'undefined') {
Storage.AudioContext = webkitAudioContext;
}
function setSrcObject(stream, element) {
if ('srcObject' in element) {
element.srcObject = stream;
} else if ('mozSrcObject' in element) {
element.mozSrcObject = stream;
} else {
element.srcObject = stream;
}
}
this.startDrawingFrames = function() {
drawVideosToCanvas();
};
function drawVideosToCanvas() {
if (isStopDrawingFrames) {
return;
}
var videosLength = videos.length;
var fullcanvas = false;
var remaining = [];
videos.forEach(function(video) {
if (!video.stream) {
video.stream = {};
}
if (video.stream.fullcanvas) {
fullcanvas = video;
} else {
// todo: video.stream.active or video.stream.live to fix blank frames issues?
remaining.push(video);
}
});
if (fullcanvas) {
canvas.width = fullcanvas.stream.width;
canvas.height = fullcanvas.stream.height;
} else if (remaining.length) {
canvas.width = videosLength > 1 ? remaining[0].width * 2 : remaining[0].width;
var height = 1;
if (videosLength === 3 || videosLength === 4) {
height = 2;
}
if (videosLength === 5 || videosLength === 6) {
height = 3;
}
if (videosLength === 7 || videosLength === 8) {
height = 4;
}
if (videosLength === 9 || videosLength === 10) {
height = 5;
}
canvas.height = remaining[0].height * height;
} else {
canvas.width = self.width || 360;
canvas.height = self.height || 240;
}
if (fullcanvas && fullcanvas instanceof HTMLVideoElement) {
drawImage(fullcanvas);
}
remaining.forEach(function(video, idx) {
drawImage(video, idx);
});
setTimeout(drawVideosToCanvas, self.frameInterval);
}
function drawImage(video, idx) {
if (isStopDrawingFrames) {
return;
}
var x = 0;
var y = 0;
var width = video.width;
var height = video.height;
if (idx === 1) {
x = video.width;
}
if (idx === 2) {
y = video.height;
}
if (idx === 3) {
x = video.width;
y = video.height;
}
if (idx === 4) {
y = video.height * 2;
}
if (idx === 5) {
x = video.width;
y = video.height * 2;
}
if (idx === 6) {
y = video.height * 3;
}
if (idx === 7) {
x = video.width;
y = video.height * 3;
}
if (typeof video.stream.left !== 'undefined') {
x = video.stream.left;
}
if (typeof video.stream.top !== 'undefined') {
y = video.stream.top;
}
if (typeof video.stream.width !== 'undefined') {
width = video.stream.width;
}
if (typeof video.stream.height !== 'undefined') {
height = video.stream.height;
}
context.drawImage(video, x, y, width, height);
if (typeof video.stream.onRender === 'function') {
video.stream.onRender(context, x, y, width, height, idx);
}
}
function getMixedStream() {
isStopDrawingFrames = false;
var mixedVideoStream = getMixedVideoStream();
var mixedAudioStream = getMixedAudioStream();
if (mixedAudioStream) {
mixedAudioStream.getTracks().filter(function(t) {
return t.kind === 'audio';
}).forEach(function(track) {
mixedVideoStream.addTrack(track);
});
}
var fullcanvas;
arrayOfMediaStreams.forEach(function(stream) {
if (stream.fullcanvas) {
fullcanvas = true;
}
});
// mixedVideoStream.prototype.appendStreams = appendStreams;
// mixedVideoStream.prototype.resetVideoStreams = resetVideoStreams;
// mixedVideoStream.prototype.clearRecordedData = clearRecordedData;
return mixedVideoStream;
}
function getMixedVideoStream() {
resetVideoStreams();
var capturedStream;
if ('captureStream' in canvas) {
capturedStream = canvas.captureStream();
} else if ('mozCaptureStream' in canvas) {
capturedStream = canvas.mozCaptureStream();
} else if (!self.disableLogs) {
console.error('Upgrade to latest Chrome or otherwise enable this flag: chrome://flags/#enable-experimental-web-platform-features');
}
var videoStream = new MediaStream();
capturedStream.getTracks().filter(function(t) {
return t.kind === 'video';
}).forEach(function(track) {
videoStream.addTrack(track);
});
canvas.stream = videoStream;
return videoStream;
}
function getMixedAudioStream() {
// via: @pehrsons
if (!Storage.AudioContextConstructor) {
Storage.AudioContextConstructor = new Storage.AudioContext();
}
self.audioContext = Storage.AudioContextConstructor;
self.audioSources = [];
if (self.useGainNode === true) {
self.gainNode = self.audioContext.createGain();
self.gainNode.connect(self.audioContext.destination);
self.gainNode.gain.value = 0; // don't hear self
}
var audioTracksLength = 0;
arrayOfMediaStreams.forEach(function(stream) {
if (!stream.getTracks().filter(function(t) {
return t.kind === 'audio';
}).length) {
return;
}
audioTracksLength++;
var audioSource = self.audioContext.createMediaStreamSource(stream);
if (self.useGainNode === true) {
audioSource.connect(self.gainNode);
}
self.audioSources.push(audioSource);
});
if (!audioTracksLength) {
// because "self.audioContext" is not initialized
// that's why we've to ignore rest of the code
return;
}
self.audioDestination = self.audioContext.createMediaStreamDestination();
self.audioSources.forEach(function(audioSource) {
audioSource.connect(self.audioDestination);
});
return self.audioDestination.stream;
}
function getVideo(stream) {
var video = document.createElement('video');
setSrcObject(stream, video);
video.className = elementClass;
video.muted = true;
video.volume = 0;
video.width = stream.width || self.width || 360;
video.height = stream.height || self.height || 240;
video.play();
return video;
}
this.appendStreams = function(streams) {
if (!streams) {
throw 'First parameter is required.';
}
if (!(streams instanceof Array)) {
streams = [streams];
}
streams.forEach(function(stream) {
var newStream = new MediaStream();
if (stream.getTracks().filter(function(t) {
return t.kind === 'video';
}).length) {
var video = getVideo(stream);
video.stream = stream;
videos.push(video);
newStream.addTrack(stream.getTracks().filter(function(t) {
return t.kind === 'video';
})[0]);
}
if (stream.getTracks().filter(function(t) {
return t.kind === 'audio';
}).length) {
var audioSource = self.audioContext.createMediaStreamSource(stream);
self.audioDestination = self.audioContext.createMediaStreamDestination();
audioSource.connect(self.audioDestination);
newStream.addTrack(self.audioDestination.stream.getTracks().filter(function(t) {
return t.kind === 'audio';
})[0]);
}
arrayOfMediaStreams.push(newStream);
});
};
this.releaseStreams = function() {
videos = [];
isStopDrawingFrames = true;
if (self.gainNode) {
self.gainNode.disconnect();
self.gainNode = null;
}
if (self.audioSources.length) {
self.audioSources.forEach(function(source) {
source.disconnect();
});
self.audioSources = [];
}
if (self.audioDestination) {
self.audioDestination.disconnect();
self.audioDestination = null;
}
if (self.audioContext) {
self.audioContext.close();
}
self.audioContext = null;
context.clearRect(0, 0, canvas.width, canvas.height);
if (canvas.stream) {
canvas.stream.stop();
canvas.stream = null;
}
};
this.resetVideoStreams = function(streams) {
if (streams && !(streams instanceof Array)) {
streams = [streams];
}
resetVideoStreams(streams);
};
function resetVideoStreams(streams) {
videos = [];
streams = streams || arrayOfMediaStreams;
// via: @adrian-ber
streams.forEach(function(stream) {
if (!stream.getTracks().filter(function(t) {
return t.kind === 'video';
}).length) {
return;
}
var video = getVideo(stream);
video.stream = stream;
videos.push(video);
});
}
// for debugging
this.name = 'MultiStreamsMixer';
this.toString = function() {
return this.name;
};
this.getMixedStream = getMixedStream;
}
if (typeof RecordRTC === 'undefined') {
if (true /* && !!module.exports*/ ) {
module.exports = MultiStreamsMixer;
}
if (true) {
!(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_RESULT__ = (function() {
return MultiStreamsMixer;
}).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__),
__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
}
}
// ______________________
// MultiStreamRecorder.js
/*
* Video conference recording, using captureStream API along with WebAudio and Canvas2D API.
*/
/**
* MultiStreamRecorder can record multiple videos in single container.
* @summary Multi-videos recorder.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef MultiStreamRecorder
* @class
* @example
* var options = {
* mimeType: 'video/webm'
* }
* var recorder = new MultiStreamRecorder(ArrayOfMediaStreams, options);
* recorder.record();
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
*
* // or
* var blob = recorder.blob;
* });
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {MediaStreams} mediaStreams - Array of MediaStreams.
* @param {object} config - {disableLogs:true, frameInterval: 1, mimeType: "video/webm"}
*/
function MultiStreamRecorder(arrayOfMediaStreams, options) {
arrayOfMediaStreams = arrayOfMediaStreams || [];
var self = this;
var mixer;
var mediaRecorder;
options = options || {
elementClass: 'multi-streams-mixer',
mimeType: 'video/webm',
video: {
width: 360,
height: 240
}
};
if (!options.frameInterval) {
options.frameInterval = 10;
}
if (!options.video) {
options.video = {};
}
if (!options.video.width) {
options.video.width = 360;
}
if (!options.video.height) {
options.video.height = 240;
}
/**
* This method records all MediaStreams.
* @method
* @memberof MultiStreamRecorder
* @example
* recorder.record();
*/
this.record = function() {
// github/muaz-khan/MultiStreamsMixer
mixer = new MultiStreamsMixer(arrayOfMediaStreams, options.elementClass || 'multi-streams-mixer');
if (getAllVideoTracks().length) {
mixer.frameInterval = options.frameInterval || 10;
mixer.width = options.video.width || 360;
mixer.height = options.video.height || 240;
mixer.startDrawingFrames();
}
if (options.previewStream && typeof options.previewStream === 'function') {
options.previewStream(mixer.getMixedStream());
}
// record using MediaRecorder API
mediaRecorder = new MediaStreamRecorder(mixer.getMixedStream(), options);
mediaRecorder.record();
};
function getAllVideoTracks() {
var tracks = [];
arrayOfMediaStreams.forEach(function(stream) {
getTracks(stream, 'video').forEach(function(track) {
tracks.push(track);
});
});
return tracks;
}
/**
* This method stops recording MediaStream.
* @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.
* @method
* @memberof MultiStreamRecorder
* @example
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
* });
*/
this.stop = function(callback) {
if (!mediaRecorder) {
return;
}
mediaRecorder.stop(function(blob) {
self.blob = blob;
callback(blob);
self.clearRecordedData();
});
};
/**
* This method pauses the recording process.
* @method
* @memberof MultiStreamRecorder
* @example
* recorder.pause();
*/
this.pause = function() {
if (mediaRecorder) {
mediaRecorder.pause();
}
};
/**
* This method resumes the recording process.
* @method
* @memberof MultiStreamRecorder
* @example
* recorder.resume();
*/
this.resume = function() {
if (mediaRecorder) {
mediaRecorder.resume();
}
};
/**
* This method resets currently recorded data.
* @method
* @memberof MultiStreamRecorder
* @example
* recorder.clearRecordedData();
*/
this.clearRecordedData = function() {
if (mediaRecorder) {
mediaRecorder.clearRecordedData();
mediaRecorder = null;
}
if (mixer) {
mixer.releaseStreams();
mixer = null;
}
};
/**
* Add extra media-streams to existing recordings.
* @method
* @memberof MultiStreamRecorder
* @param {MediaStreams} mediaStreams - Array of MediaStreams
* @example
* recorder.addStreams([newAudioStream, newVideoStream]);
*/
this.addStreams = function(streams) {
if (!streams) {
throw 'First parameter is required.';
}
if (!(streams instanceof Array)) {
streams = [streams];
}
arrayOfMediaStreams.concat(streams);
if (!mediaRecorder || !mixer) {
return;
}
mixer.appendStreams(streams);
if (options.previewStream && typeof options.previewStream === 'function') {
options.previewStream(mixer.getMixedStream());
}
};
/**
* Reset videos during live recording. Replace old videos e.g. replace cameras with full-screen.
* @method
* @memberof MultiStreamRecorder
* @param {MediaStreams} mediaStreams - Array of MediaStreams
* @example
* recorder.resetVideoStreams([newVideo1, newVideo2]);
*/
this.resetVideoStreams = function(streams) {
if (!mixer) {
return;
}
if (streams && !(streams instanceof Array)) {
streams = [streams];
}
mixer.resetVideoStreams(streams);
};
/**
* Returns MultiStreamsMixer
* @method
* @memberof MultiStreamRecorder
* @example
* let mixer = recorder.getMixer();
* mixer.appendStreams([newStream]);
*/
this.getMixer = function() {
return mixer;
};
// for debugging
this.name = 'MultiStreamRecorder';
this.toString = function() {
return this.name;
};
}
if (typeof RecordRTC !== 'undefined') {
RecordRTC.MultiStreamRecorder = MultiStreamRecorder;
}
// _____________________
// RecordRTC.promises.js
/**
* RecordRTCPromisesHandler adds promises support in {@link RecordRTC}. Try a {@link https://github.com/muaz-khan/RecordRTC/blob/master/simple-demos/RecordRTCPromisesHandler.html|demo here}
* @summary Promises for {@link RecordRTC}
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef RecordRTCPromisesHandler
* @class
* @example
* var recorder = new RecordRTCPromisesHandler(mediaStream, options);
* recorder.startRecording()
* .then(successCB)
* .catch(errorCB);
* // Note: You can access all RecordRTC API using "recorder.recordRTC" e.g.
* recorder.recordRTC.onStateChanged = function(state) {};
* recorder.recordRTC.setRecordingDuration(5000);
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {MediaStream} mediaStream - Single media-stream object, array of media-streams, html-canvas-element, etc.
* @param {object} config - {type:"video", recorderType: MediaStreamRecorder, disableLogs: true, numberOfAudioChannels: 1, bufferSize: 0, sampleRate: 0, video: HTMLVideoElement, etc.}
* @throws Will throw an error if "new" keyword is not used to initiate "RecordRTCPromisesHandler". Also throws error if first argument "MediaStream" is missing.
* @requires {@link RecordRTC}
*/
function RecordRTCPromisesHandler(mediaStream, options) {
if (!this) {
throw 'Use "new RecordRTCPromisesHandler()"';
}
if (typeof mediaStream === 'undefined') {
throw 'First argument "MediaStream" is required.';
}
var self = this;
/**
* @property {Blob} blob - Access/reach the native {@link RecordRTC} object.
* @memberof RecordRTCPromisesHandler
* @example
* let internal = recorder.recordRTC.getInternalRecorder();
* alert(internal instanceof MediaStreamRecorder);
* recorder.recordRTC.onStateChanged = function(state) {};
*/
self.recordRTC = new RecordRTC(mediaStream, options);
/**
* This method records MediaStream.
* @method
* @memberof RecordRTCPromisesHandler
* @example
* recorder.startRecording()
* .then(successCB)
* .catch(errorCB);
*/
this.startRecording = function() {
return new Promise(function(resolve, reject) {
try {
self.recordRTC.startRecording();
resolve();
} catch (e) {
reject(e);
}
});
};
/**
* This method stops the recording.
* @method
* @memberof RecordRTCPromisesHandler
* @example
* recorder.stopRecording().then(function() {
* var blob = recorder.getBlob();
* }).catch(errorCB);
*/
this.stopRecording = function() {
return new Promise(function(resolve, reject) {
try {
self.recordRTC.stopRecording(function(url) {
self.blob = self.recordRTC.getBlob();
if (!self.blob || !self.blob.size) {
reject('Empty blob.', self.blob);
return;
}
resolve(url);
});
} catch (e) {
reject(e);
}
});
};
/**
* This method pauses the recording. You can resume recording using "resumeRecording" method.
* @method
* @memberof RecordRTCPromisesHandler
* @example
* recorder.pauseRecording()
* .then(successCB)
* .catch(errorCB);
*/
this.pauseRecording = function() {
return new Promise(function(resolve, reject) {
try {
self.recordRTC.pauseRecording();
resolve();
} catch (e) {
reject(e);
}
});
};
/**
* This method resumes the recording.
* @method
* @memberof RecordRTCPromisesHandler
* @example
* recorder.resumeRecording()
* .then(successCB)
* .catch(errorCB);
*/
this.resumeRecording = function() {
return new Promise(function(resolve, reject) {
try {
self.recordRTC.resumeRecording();
resolve();
} catch (e) {
reject(e);
}
});
};
/**
* This method returns data-url for the recorded blob.
* @method
* @memberof RecordRTCPromisesHandler
* @example
* recorder.stopRecording().then(function() {
* recorder.getDataURL().then(function(dataURL) {
* window.open(dataURL);
* }).catch(errorCB);;
* }).catch(errorCB);
*/
this.getDataURL = function(callback) {
return new Promise(function(resolve, reject) {
try {
self.recordRTC.getDataURL(function(dataURL) {
resolve(dataURL);
});
} catch (e) {
reject(e);
}
});
};
/**
* This method returns the recorded blob.
* @method
* @memberof RecordRTCPromisesHandler
* @example
* recorder.stopRecording().then(function() {
* recorder.getBlob().then(function(blob) {})
* }).catch(errorCB);
*/
this.getBlob = function() {
return new Promise(function(resolve, reject) {
try {
resolve(self.recordRTC.getBlob());
} catch (e) {
reject(e);
}
});
};
/**
* This method returns the internal recording object.
* @method
* @memberof RecordRTCPromisesHandler
* @example
* let internalRecorder = await recorder.getInternalRecorder();
* if(internalRecorder instanceof MultiStreamRecorder) {
* internalRecorder.addStreams([newAudioStream]);
* internalRecorder.resetVideoStreams([screenStream]);
* }
* @returns {Object}
*/
this.getInternalRecorder = function() {
return new Promise(function(resolve, reject) {
try {
resolve(self.recordRTC.getInternalRecorder());
} catch (e) {
reject(e);
}
});
};
/**
* This method resets the recorder. So that you can reuse single recorder instance many times.
* @method
* @memberof RecordRTCPromisesHandler
* @example
* await recorder.reset();
* recorder.startRecording(); // record again
*/
this.reset = function() {
return new Promise(function(resolve, reject) {
try {
resolve(self.recordRTC.reset());
} catch (e) {
reject(e);
}
});
};
/**
* Destroy RecordRTC instance. Clear all recorders and objects.
* @method
* @memberof RecordRTCPromisesHandler
* @example
* recorder.destroy().then(successCB).catch(errorCB);
*/
this.destroy = function() {
return new Promise(function(resolve, reject) {
try {
resolve(self.recordRTC.destroy());
} catch (e) {
reject(e);
}
});
};
/**
* Get recorder's readonly state.
* @method
* @memberof RecordRTCPromisesHandler
* @example
* let state = await recorder.getState();
* // or
* recorder.getState().then(state => { console.log(state); })
* @returns {String} Returns recording state.
*/
this.getState = function() {
return new Promise(function(resolve, reject) {
try {
resolve(self.recordRTC.getState());
} catch (e) {
reject(e);
}
});
};
/**
* @property {Blob} blob - Recorded data as "Blob" object.
* @memberof RecordRTCPromisesHandler
* @example
* await recorder.stopRecording();
* let blob = recorder.getBlob(); // or "recorder.recordRTC.blob"
* invokeSaveAsDialog(blob);
*/
this.blob = null;
/**
* RecordRTC version number
* @property {String} version - Release version number.
* @memberof RecordRTCPromisesHandler
* @static
* @readonly
* @example
* alert(recorder.version);
*/
this.version = '5.6.2';
}
if (typeof RecordRTC !== 'undefined') {
RecordRTC.RecordRTCPromisesHandler = RecordRTCPromisesHandler;
}
// ______________________
// WebAssemblyRecorder.js
/**
* WebAssemblyRecorder lets you create webm videos in JavaScript via WebAssembly. The library consumes raw RGBA32 buffers (4 bytes per pixel) and turns them into a webm video with the given framerate and quality. This makes it compatible out-of-the-box with ImageData from a CANVAS. With realtime mode you can also use webm-wasm for streaming webm videos.
* @summary Video recording feature in Chrome, Firefox and maybe Edge.
* @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}
* @author {@link https://MuazKhan.com|Muaz Khan}
* @typedef WebAssemblyRecorder
* @class
* @example
* var recorder = new WebAssemblyRecorder(mediaStream);
* recorder.record();
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
* });
* @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}
* @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.
* @param {object} config - {webAssemblyPath:'webm-wasm.wasm',workerPath: 'webm-worker.js', frameRate: 30, width: 1920, height: 1080, bitrate: 1024, realtime: true}
*/
function WebAssemblyRecorder(stream, config) {
// based on: github.com/GoogleChromeLabs/webm-wasm
if (typeof ReadableStream === 'undefined' || typeof WritableStream === 'undefined') {
// because it fixes readable/writable streams issues
console.error('Following polyfill is strongly recommended: https://unpkg.com/@mattiasbuelens/web-streams-polyfill/dist/polyfill.min.js');
}
config = config || {};
config.width = config.width || 640;
config.height = config.height || 480;
config.frameRate = config.frameRate || 30;
config.bitrate = config.bitrate || 1200;
config.realtime = config.realtime || true;
function createBufferURL(buffer, type) {
return URL.createObjectURL(new Blob([buffer], {
type: type || ''
}));
}
var finished;
function cameraStream() {
return new ReadableStream({
start: function(controller) {
var cvs = document.createElement('canvas');
var video = document.createElement('video');
var first = true;
video.srcObject = stream;
video.muted = true;
video.height = config.height;
video.width = config.width;
video.volume = 0;
video.onplaying = function() {
cvs.width = config.width;
cvs.height = config.height;
var ctx = cvs.getContext('2d');
var frameTimeout = 1000 / config.frameRate;
var cameraTimer = setInterval(function f() {
if (finished) {
clearInterval(cameraTimer);
controller.close();
}
if (first) {
first = false;
if (config.onVideoProcessStarted) {
config.onVideoProcessStarted();
}
}
ctx.drawImage(video, 0, 0);
if (controller._controlledReadableStream.state !== 'closed') {
try {
controller.enqueue(
ctx.getImageData(0, 0, config.width, config.height)
);
} catch (e) {}
}
}, frameTimeout);
};
video.play();
}
});
}
var worker;
function startRecording(stream, buffer) {
if (!config.workerPath && !buffer) {
finished = false;
// is it safe to use @latest ?
fetch(
'https://unpkg.com/webm-wasm@latest/dist/webm-worker.js'
).then(function(r) {
r.arrayBuffer().then(function(buffer) {
startRecording(stream, buffer);
});
});
return;
}
if (!config.workerPath && buffer instanceof ArrayBuffer) {
var blob = new Blob([buffer], {
type: 'text/javascript'
});
config.workerPath = URL.createObjectURL(blob);
}
if (!config.workerPath) {
console.error('workerPath parameter is missing.');
}
worker = new Worker(config.workerPath);
worker.postMessage(config.webAssemblyPath || 'https://unpkg.com/webm-wasm@latest/dist/webm-wasm.wasm');
worker.addEventListener('message', function(event) {
if (event.data === 'READY') {
worker.postMessage({
width: config.width,
height: config.height,
bitrate: config.bitrate || 1200,
timebaseDen: config.frameRate || 30,
realtime: config.realtime
});
cameraStream().pipeTo(new WritableStream({
write: function(image) {
if (finished) {
console.error('Got image, but recorder is finished!');
return;
}
worker.postMessage(image.data.buffer, [image.data.buffer]);
}
}));
} else if (!!event.data) {
if (!isPaused) {
arrayOfBuffers.push(event.data);
}
}
});
}
/**
* This method records video.
* @method
* @memberof WebAssemblyRecorder
* @example
* recorder.record();
*/
this.record = function() {
arrayOfBuffers = [];
isPaused = false;
this.blob = null;
startRecording(stream);
if (typeof config.initCallback === 'function') {
config.initCallback();
}
};
var isPaused;
/**
* This method pauses the recording process.
* @method
* @memberof WebAssemblyRecorder
* @example
* recorder.pause();
*/
this.pause = function() {
isPaused = true;
};
/**
* This method resumes the recording process.
* @method
* @memberof WebAssemblyRecorder
* @example
* recorder.resume();
*/
this.resume = function() {
isPaused = false;
};
function terminate(callback) {
if (!worker) {
if (callback) {
callback();
}
return;
}
// Wait for null event data to indicate that the encoding is complete
worker.addEventListener('message', function(event) {
if (event.data === null) {
worker.terminate();
worker = null;
if (callback) {
callback();
}
}
});
worker.postMessage(null);
}
var arrayOfBuffers = [];
/**
* This method stops recording video.
* @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.
* @method
* @memberof WebAssemblyRecorder
* @example
* recorder.stop(function(blob) {
* video.src = URL.createObjectURL(blob);
* });
*/
this.stop = function(callback) {
finished = true;
var recorder = this;
terminate(function() {
recorder.blob = new Blob(arrayOfBuffers, {
type: 'video/webm'
});
callback(recorder.blob);
});
};
// for debugging
this.name = 'WebAssemblyRecorder';
this.toString = function() {
return this.name;
};
/**
* This method resets currently recorded data.
* @method
* @memberof WebAssemblyRecorder
* @example
* recorder.clearRecordedData();
*/
this.clearRecordedData = function() {
arrayOfBuffers = [];
isPaused = false;
this.blob = null;
// todo: if recording-ON then STOP it first
};
/**
* @property {Blob} blob - The recorded blob object.
* @memberof WebAssemblyRecorder
* @example
* recorder.stop(function(){
* var blob = recorder.blob;
* });
*/
this.blob = null;
}
if (typeof RecordRTC !== 'undefined') {
RecordRTC.WebAssemblyRecorder = WebAssemblyRecorder;
}
/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ "./node_modules/webpack/buildin/global.js"), __webpack_require__(/*! ./../process/browser.js */ "./node_modules/process/browser.js")))
/***/ }),
/***/ "./node_modules/svg-inline-loader/index.js?classPrefix!./src/images/microphone.svg":
/*!********************************************************************************!*\
!*** ./node_modules/svg-inline-loader?classPrefix!./src/images/microphone.svg ***!
\********************************************************************************/
/*! no static exports found */
/***/ (function(module, exports) {
module.exports = "<svg viewBox=\"0 0 16 16\" xmlns=\"http://www.w3.org/2000/svg\"><g><path d=\"M11,3.4C11,2.1,9.9,1,8.6,1H8.4C7.1,1,6,2.1,6,3.4V5h5V3.4z\"></path><path d=\"M8.4,10h0.3C9.9,10,11,8.9,11,7.6V6H6v1.6C6,8.9,7.1,10,8.4,10z\"></path><path d=\"M12,6v0.9c0,2.2-1.6,4.1-3.5,4.1S5,9.1,5,6.9V6H4v1c0,2.5,1.8,4.6,4,4.9V14H6v1h5v-1H9v-2.1 c2.2-0.3,4-2.4,4-4.9V6H12z\"></path></g></svg>"
/***/ }),
/***/ "./node_modules/webpack/buildin/global.js":
/*!***********************************!*\
!*** (webpack)/buildin/global.js ***!
\***********************************/
/*! no static exports found */
/***/ (function(module, exports) {
var g;
// This works in non-strict mode
g = (function() {
return this;
})();
try {
// This works if eval is allowed (see CSP)
g = g || new Function("return this")();
} catch (e) {
// This works if the window reference is available
if (typeof window === "object") g = window;
}
// g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}
module.exports = g;
/***/ }),
/***/ "./src/microphone.js":
/*!***************************!*\
!*** ./src/microphone.js ***!
\***************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var recordrtc__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! recordrtc */ "./node_modules/recordrtc/RecordRTC.js");
/* harmony import */ var recordrtc__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(recordrtc__WEBPACK_IMPORTED_MODULE_0__);
function init(Survey) {
const iconId = "icon-microphone";
Survey.SvgRegistry && Survey.SvgRegistry.registerIconFromSvg(iconId, __webpack_require__(/*! svg-inline-loader?classPrefix!./images/microphone.svg */ "./node_modules/svg-inline-loader/index.js?classPrefix!./src/images/microphone.svg"), "");
var widget = {
name: "microphone",
title: "Microphone",
iconName: iconId,
widgetIsLoaded: function() {
return typeof recordrtc__WEBPACK_IMPORTED_MODULE_0___default.a != "undefined";
},
isFit: function(question) {
return question.getType() === "microphone";
},
htmlTemplate:
"<div style='height: 39px'>" +
"<button type='button' title='Record' style='vertical-align: top; margin-top: 3px' ><i class='fa fa-microphone' aria-hidden='true'></i></button>" +
" <button type='button' title='Save' style='vertical-align: top; margin-top: 3px'><i class='fa fa-cloud' aria-hidden='true' ></i></button>" +
" <audio style='" +
"vertical-align: top;" +
"margin-left: 10px;" +
"height:35px;" +
"-moz-box-shadow: 2px 2px 4px 0px #006773;" +
"-webkit-box-shadow: 2px 2px 4px 0px #006773;" +
"box-shadow: 2px 2px 4px 0px #006773;" +
"' " +
"controls='true' >" +
"</audio>" +
"</div>",
activatedByChanged: function(activatedBy) {
Survey.JsonObject.metaData.addClass("microphone", [], null, "empty");
},
afterRender: function(question, el) {
var rootWidget = this;
var buttonStartEl = el.getElementsByTagName("button")[0];
var buttonStopEl = el.getElementsByTagName("button")[1];
var audioEl = el.getElementsByTagName("audio")[0];
////////// RecordRTC logic
var successCallback = function(stream) {
var options = {
type: "audio",
mimeType: "audio/webm",
audioBitsPerSecond: 44100,
sampleRate: 44100,
bufferSize: 16384,
numberOfAudioChannels: 1
};
console.log("successCallback");
question.survey.mystream = stream;
question.survey.recordRTC = recordrtc__WEBPACK_IMPORTED_MODULE_0___default()(
question.survey.mystream,
options
);
if (typeof question.survey.recordRTC != "undefined") {
console.log("startRecording");
question.survey.recordRTC.startRecording();
}
};
var errorCallback = function() {
alert("No microphone");
question.survey.recordRTC = undefined;
question.survey.mystream = undefined;
};
var processAudio = function(audioVideoWebMURL) {
console.log("processAudio");
var recordedBlob = question.survey.recordRTC.getBlob();
var fileReader = new FileReader();
fileReader.onload = function(event) {
var dataUri = event.target.result;
console.log("dataUri: " + dataUri);
question.value = dataUri;
audioEl.src = dataUri;
console.log("cleaning");
question.survey.recordRTC = undefined;
question.survey.mystream = undefined;
};
fileReader.readAsDataURL(recordedBlob);
};
var startRecording = function() {
// erase previous data
question.value = undefined;
// if recorder open on another question - try to stop recording
if (typeof question.survey.recordRTC != "undefined") {
question.survey.recordRTC.stopRecording(doNothingHandler);
if (typeof question.survey.mystream != "undefined") {
question.survey.mystream.getAudioTracks().forEach(function(track) {
track.stop();
});
}
}
var mediaConstraints = {
video: false,
audio: true
};
navigator.mediaDevices
.getUserMedia(mediaConstraints)
.then(successCallback.bind(this), errorCallback.bind(this));
};
var stopRecording = function() {
console.log("stopRecording");
if (typeof question.survey.recordRTC != "undefined") {
question.survey.recordRTC.stopRecording(processAudio.bind(this));
if (typeof question.survey.mystream != "undefined") {
question.survey.mystream.getAudioTracks().forEach(function(track) {
track.stop();
});
}
}
};
////////////// end RTC logic //////////////////
if (!question.isReadOnly) {
buttonStartEl.onclick = startRecording;
} else {
buttonStartEl.parentNode.removeChild(buttonStartEl);
}
if (!question.isReadOnly) {
buttonStopEl.onclick = stopRecording;
} else {
buttonStopEl.parentNode.removeChild(buttonStopEl);
}
audioEl.src = question.value;
var updateValueHandler = function() {};
var doNothingHandler = function() {};
question.valueChangedCallback = updateValueHandler;
updateValueHandler();
},
willUnmount: function(question, el) {
console.log("unmount microphone no record ");
if (typeof question.survey.recordRTC != "undefined") {
question.survey.recordRTC.stopRecording(doNothingHandler);
if (typeof question.survey.mystream != "undefined") {
question.survey.mystream.getAudioTracks().forEach(function(track) {
track.stop();
});
}
question.value = undefined;
question.survey.recordRTC = undefined;
question.survey.mystream = undefined;
}
}
};
Survey.CustomWidgetCollection.Instance.addCustomWidget(widget, "customtype");
}
if (typeof Survey !== "undefined") {
init(Survey);
}
/* harmony default export */ __webpack_exports__["default"] = (init);
/***/ })
/******/ });
});
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It's inside a\n// function because try/catches deoptimize in certain engines.\n\nvar cachedSetTimeout;\nvar cachedClearTimeout;\n\nfunction defaultSetTimout() {\n    throw new Error('setTimeout has not been defined');\n}\nfunction defaultClearTimeout () {\n    throw new Error('clearTimeout has not been defined');\n}\n(function () {\n    try {\n        if (typeof setTimeout === 'function') {\n            cachedSetTimeout = setTimeout;\n        } else {\n            cachedSetTimeout = defaultSetTimout;\n        }\n    } catch (e) {\n        cachedSetTimeout = defaultSetTimout;\n    }\n    try {\n        if (typeof clearTimeout === 'function') {\n            cachedClearTimeout = clearTimeout;\n        } else {\n            cachedClearTimeout = defaultClearTimeout;\n        }\n    } catch (e) {\n        cachedClearTimeout = defaultClearTimeout;\n    }\n} ())\nfunction runTimeout(fun) {\n    if (cachedSetTimeout === setTimeout) {\n        //normal enviroments in sane situations\n        return setTimeout(fun, 0);\n    }\n    // if setTimeout wasn't available but was latter defined\n    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {\n        cachedSetTimeout = setTimeout;\n        return setTimeout(fun, 0);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedSetTimeout(fun, 0);\n    } catch(e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n            return cachedSetTimeout.call(null, fun, 0);\n        } catch(e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error\n            return cachedSetTimeout.call(this, fun, 0);\n        }\n    }\n\n\n}\nfunction runClearTimeout(marker) {\n    if (cachedClearTimeout === clearTimeout) {\n        //normal enviroments in sane situations\n        return clearTimeout(marker);\n    }\n    // if clearTimeout wasn't available but was latter defined\n    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {\n        cachedClearTimeout = clearTimeout;\n        return clearTimeout(marker);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedClearTimeout(marker);\n    } catch (e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally\n            return cachedClearTimeout.call(null, marker);\n        } catch (e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.\n            // Some versions of I.E. have different rules for clearTimeout vs setTimeout\n            return cachedClearTimeout.call(this, marker);\n        }\n    }\n\n\n\n}\nvar queue = [];\nvar draining = false;\nvar currentQueue;\nvar queueIndex = -1;\n\nfunction cleanUpNextTick() {\n    if (!draining || !currentQueue) {\n        return;\n    }\n    draining = false;\n    if (currentQueue.length) {\n        queue = currentQueue.concat(queue);\n    } else {\n        queueIndex = -1;\n    }\n    if (queue.length) {\n        drainQueue();\n    }\n}\n\nfunction drainQueue() {\n    if (draining) {\n        return;\n    }\n    var timeout = runTimeout(cleanUpNextTick);\n    draining = true;\n\n    var len = queue.length;\n    while(len) {\n        currentQueue = queue;\n        queue = [];\n        while (++queueIndex < len) {\n            if (currentQueue) {\n                currentQueue[queueIndex].run();\n            }\n        }\n        queueIndex = -1;\n        len = queue.length;\n    }\n    currentQueue = null;\n    draining = false;\n    runClearTimeout(timeout);\n}\n\nprocess.nextTick = function (fun) {\n    var args = new Array(arguments.length - 1);\n    if (arguments.length > 1) {\n        for (var i = 1; i < arguments.length; i++) {\n            args[i - 1] = arguments[i];\n        }\n    }\n    queue.push(new Item(fun, args));\n    if (queue.length === 1 && !draining) {\n        runTimeout(drainQueue);\n    }\n};\n\n// v8 likes predictible objects\nfunction Item(fun, array) {\n    this.fun = fun;\n    this.array = array;\n}\nItem.prototype.run = function () {\n    this.fun.apply(null, this.array);\n};\nprocess.title = 'browser';\nprocess.browser = true;\nprocess.env = {};\nprocess.argv = [];\nprocess.version = ''; // empty string to avoid regexp issues\nprocess.versions = {};\n\nfunction noop() {}\n\nprocess.on = noop;\nprocess.addListener = noop;\nprocess.once = noop;\nprocess.off = noop;\nprocess.removeListener = noop;\nprocess.removeAllListeners = noop;\nprocess.emit = noop;\nprocess.prependListener = noop;\nprocess.prependOnceListener = noop;\n\nprocess.listeners = function (name) { return [] }\n\nprocess.binding = function (name) {\n    throw new Error('process.binding is not supported');\n};\n\nprocess.cwd = function () { return '/' };\nprocess.chdir = function (dir) {\n    throw new Error('process.chdir is not supported');\n};\nprocess.umask = function() { return 0; };\n","'use strict';\r\n\r\n// Last time updated: 2021-03-09 3:20:22 AM UTC\r\n\r\n// ________________\r\n// RecordRTC v5.6.2\r\n\r\n// Open-Sourced: https://github.com/muaz-khan/RecordRTC\r\n\r\n// --------------------------------------------------\r\n// Muaz Khan     - www.MuazKhan.com\r\n// MIT License   - www.WebRTC-Experiment.com/licence\r\n// --------------------------------------------------\r\n\r\n// ____________\r\n// RecordRTC.js\r\n\r\n/**\r\n * {@link https://github.com/muaz-khan/RecordRTC|RecordRTC} is a WebRTC JavaScript library for audio/video as well as screen activity recording. It supports Chrome, Firefox, Opera, Android, and Microsoft Edge. Platforms: Linux, Mac and Windows. \r\n * @summary Record audio, video or screen inside the browser.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef RecordRTC\r\n * @class\r\n * @example\r\n * var recorder = RecordRTC(mediaStream or [arrayOfMediaStream], {\r\n *     type: 'video', // audio or video or gif or canvas\r\n *     recorderType: MediaStreamRecorder || CanvasRecorder || StereoAudioRecorder || Etc\r\n * });\r\n * recorder.startRecording();\r\n * @see For further information:\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {MediaStream} mediaStream - Single media-stream object, array of media-streams, html-canvas-element, etc.\r\n * @param {object} config - {type:\"video\", recorderType: MediaStreamRecorder, disableLogs: true, numberOfAudioChannels: 1, bufferSize: 0, sampleRate: 0, desiredSampRate: 16000, video: HTMLVideoElement, etc.}\r\n */\r\n\r\nfunction RecordRTC(mediaStream, config) {\r\n    if (!mediaStream) {\r\n        throw 'First parameter is required.';\r\n    }\r\n\r\n    config = config || {\r\n        type: 'video'\r\n    };\r\n\r\n    config = new RecordRTCConfiguration(mediaStream, config);\r\n\r\n    // a reference to user's recordRTC object\r\n    var self = this;\r\n\r\n    function startRecording(config2) {\r\n        if (!config.disableLogs) {\r\n            console.log('RecordRTC version: ', self.version);\r\n        }\r\n\r\n        if (!!config2) {\r\n            // allow users to set options using startRecording method\r\n            // config2 is similar to main \"config\" object (second parameter over RecordRTC constructor)\r\n            config = new RecordRTCConfiguration(mediaStream, config2);\r\n        }\r\n\r\n        if (!config.disableLogs) {\r\n            console.log('started recording ' + config.type + ' stream.');\r\n        }\r\n\r\n        if (mediaRecorder) {\r\n            mediaRecorder.clearRecordedData();\r\n            mediaRecorder.record();\r\n\r\n            setState('recording');\r\n\r\n            if (self.recordingDuration) {\r\n                handleRecordingDuration();\r\n            }\r\n            return self;\r\n        }\r\n\r\n        initRecorder(function() {\r\n            if (self.recordingDuration) {\r\n                handleRecordingDuration();\r\n            }\r\n        });\r\n\r\n        return self;\r\n    }\r\n\r\n    function initRecorder(initCallback) {\r\n        if (initCallback) {\r\n            config.initCallback = function() {\r\n                initCallback();\r\n                initCallback = config.initCallback = null; // recorder.initRecorder should be call-backed once.\r\n            };\r\n        }\r\n\r\n        var Recorder = new GetRecorderType(mediaStream, config);\r\n\r\n        mediaRecorder = new Recorder(mediaStream, config);\r\n        mediaRecorder.record();\r\n\r\n        setState('recording');\r\n\r\n        if (!config.disableLogs) {\r\n            console.log('Initialized recorderType:', mediaRecorder.constructor.name, 'for output-type:', config.type);\r\n        }\r\n    }\r\n\r\n    function stopRecording(callback) {\r\n        callback = callback || function() {};\r\n\r\n        if (!mediaRecorder) {\r\n            warningLog();\r\n            return;\r\n        }\r\n\r\n        if (self.state === 'paused') {\r\n            self.resumeRecording();\r\n\r\n            setTimeout(function() {\r\n                stopRecording(callback);\r\n            }, 1);\r\n            return;\r\n        }\r\n\r\n        if (self.state !== 'recording' && !config.disableLogs) {\r\n            console.warn('Recording state should be: \"recording\", however current state is: ', self.state);\r\n        }\r\n\r\n        if (!config.disableLogs) {\r\n            console.log('Stopped recording ' + config.type + ' stream.');\r\n        }\r\n\r\n        if (config.type !== 'gif') {\r\n            mediaRecorder.stop(_callback);\r\n        } else {\r\n            mediaRecorder.stop();\r\n            _callback();\r\n        }\r\n\r\n        setState('stopped');\r\n\r\n        function _callback(__blob) {\r\n            if (!mediaRecorder) {\r\n                if (typeof callback.call === 'function') {\r\n                    callback.call(self, '');\r\n                } else {\r\n                    callback('');\r\n                }\r\n                return;\r\n            }\r\n\r\n            Object.keys(mediaRecorder).forEach(function(key) {\r\n                if (typeof mediaRecorder[key] === 'function') {\r\n                    return;\r\n                }\r\n\r\n                self[key] = mediaRecorder[key];\r\n            });\r\n\r\n            var blob = mediaRecorder.blob;\r\n\r\n            if (!blob) {\r\n                if (__blob) {\r\n                    mediaRecorder.blob = blob = __blob;\r\n                } else {\r\n                    throw 'Recording failed.';\r\n                }\r\n            }\r\n\r\n            if (blob && !config.disableLogs) {\r\n                console.log(blob.type, '->', bytesToSize(blob.size));\r\n            }\r\n\r\n            if (callback) {\r\n                var url;\r\n\r\n                try {\r\n                    url = URL.createObjectURL(blob);\r\n                } catch (e) {}\r\n\r\n                if (typeof callback.call === 'function') {\r\n                    callback.call(self, url);\r\n                } else {\r\n                    callback(url);\r\n                }\r\n            }\r\n\r\n            if (!config.autoWriteToDisk) {\r\n                return;\r\n            }\r\n\r\n            getDataURL(function(dataURL) {\r\n                var parameter = {};\r\n                parameter[config.type + 'Blob'] = dataURL;\r\n                DiskStorage.Store(parameter);\r\n            });\r\n        }\r\n    }\r\n\r\n    function pauseRecording() {\r\n        if (!mediaRecorder) {\r\n            warningLog();\r\n            return;\r\n        }\r\n\r\n        if (self.state !== 'recording') {\r\n            if (!config.disableLogs) {\r\n                console.warn('Unable to pause the recording. Recording state: ', self.state);\r\n            }\r\n            return;\r\n        }\r\n\r\n        setState('paused');\r\n\r\n        mediaRecorder.pause();\r\n\r\n        if (!config.disableLogs) {\r\n            console.log('Paused recording.');\r\n        }\r\n    }\r\n\r\n    function resumeRecording() {\r\n        if (!mediaRecorder) {\r\n            warningLog();\r\n            return;\r\n        }\r\n\r\n        if (self.state !== 'paused') {\r\n            if (!config.disableLogs) {\r\n                console.warn('Unable to resume the recording. Recording state: ', self.state);\r\n            }\r\n            return;\r\n        }\r\n\r\n        setState('recording');\r\n\r\n        // not all libs have this method yet\r\n        mediaRecorder.resume();\r\n\r\n        if (!config.disableLogs) {\r\n            console.log('Resumed recording.');\r\n        }\r\n    }\r\n\r\n    function readFile(_blob) {\r\n        postMessage(new FileReaderSync().readAsDataURL(_blob));\r\n    }\r\n\r\n    function getDataURL(callback, _mediaRecorder) {\r\n        if (!callback) {\r\n            throw 'Pass a callback function over getDataURL.';\r\n        }\r\n\r\n        var blob = _mediaRecorder ? _mediaRecorder.blob : (mediaRecorder || {}).blob;\r\n\r\n        if (!blob) {\r\n            if (!config.disableLogs) {\r\n                console.warn('Blob encoder did not finish its job yet.');\r\n            }\r\n\r\n            setTimeout(function() {\r\n                getDataURL(callback, _mediaRecorder);\r\n            }, 1000);\r\n            return;\r\n        }\r\n\r\n        if (typeof Worker !== 'undefined' && !navigator.mozGetUserMedia) {\r\n            var webWorker = processInWebWorker(readFile);\r\n\r\n            webWorker.onmessage = function(event) {\r\n                callback(event.data);\r\n            };\r\n\r\n            webWorker.postMessage(blob);\r\n        } else {\r\n            var reader = new FileReader();\r\n            reader.readAsDataURL(blob);\r\n            reader.onload = function(event) {\r\n                callback(event.target.result);\r\n            };\r\n        }\r\n\r\n        function processInWebWorker(_function) {\r\n            try {\r\n                var blob = URL.createObjectURL(new Blob([_function.toString(),\r\n                    'this.onmessage =  function (eee) {' + _function.name + '(eee.data);}'\r\n                ], {\r\n                    type: 'application/javascript'\r\n                }));\r\n\r\n                var worker = new Worker(blob);\r\n                URL.revokeObjectURL(blob);\r\n                return worker;\r\n            } catch (e) {}\r\n        }\r\n    }\r\n\r\n    function handleRecordingDuration(counter) {\r\n        counter = counter || 0;\r\n\r\n        if (self.state === 'paused') {\r\n            setTimeout(function() {\r\n                handleRecordingDuration(counter);\r\n            }, 1000);\r\n            return;\r\n        }\r\n\r\n        if (self.state === 'stopped') {\r\n            return;\r\n        }\r\n\r\n        if (counter >= self.recordingDuration) {\r\n            stopRecording(self.onRecordingStopped);\r\n            return;\r\n        }\r\n\r\n        counter += 1000; // 1-second\r\n\r\n        setTimeout(function() {\r\n            handleRecordingDuration(counter);\r\n        }, 1000);\r\n    }\r\n\r\n    function setState(state) {\r\n        if (!self) {\r\n            return;\r\n        }\r\n\r\n        self.state = state;\r\n\r\n        if (typeof self.onStateChanged.call === 'function') {\r\n            self.onStateChanged.call(self, state);\r\n        } else {\r\n            self.onStateChanged(state);\r\n        }\r\n    }\r\n\r\n    var WARNING = 'It seems that recorder is destroyed or \"startRecording\" is not invoked for ' + config.type + ' recorder.';\r\n\r\n    function warningLog() {\r\n        if (config.disableLogs === true) {\r\n            return;\r\n        }\r\n\r\n        console.warn(WARNING);\r\n    }\r\n\r\n    var mediaRecorder;\r\n\r\n    var returnObject = {\r\n        /**\r\n         * This method starts the recording.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * var recorder = RecordRTC(mediaStream, {\r\n         *     type: 'video'\r\n         * });\r\n         * recorder.startRecording();\r\n         */\r\n        startRecording: startRecording,\r\n\r\n        /**\r\n         * This method stops the recording. It is strongly recommended to get \"blob\" or \"URI\" inside the callback to make sure all recorders finished their job.\r\n         * @param {function} callback - Callback to get the recorded blob.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * recorder.stopRecording(function() {\r\n         *     // use either \"this\" or \"recorder\" object; both are identical\r\n         *     video.src = this.toURL();\r\n         *     var blob = this.getBlob();\r\n         * });\r\n         */\r\n        stopRecording: stopRecording,\r\n\r\n        /**\r\n         * This method pauses the recording. You can resume recording using \"resumeRecording\" method.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @todo Firefox is unable to pause the recording. Fix it.\r\n         * @example\r\n         * recorder.pauseRecording();  // pause the recording\r\n         * recorder.resumeRecording(); // resume again\r\n         */\r\n        pauseRecording: pauseRecording,\r\n\r\n        /**\r\n         * This method resumes the recording.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * recorder.pauseRecording();  // first of all, pause the recording\r\n         * recorder.resumeRecording(); // now resume it\r\n         */\r\n        resumeRecording: resumeRecording,\r\n\r\n        /**\r\n         * This method initializes the recording.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @todo This method should be deprecated.\r\n         * @example\r\n         * recorder.initRecorder();\r\n         */\r\n        initRecorder: initRecorder,\r\n\r\n        /**\r\n         * Ask RecordRTC to auto-stop the recording after 5 minutes.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * var fiveMinutes = 5 * 1000 * 60;\r\n         * recorder.setRecordingDuration(fiveMinutes, function() {\r\n         *    var blob = this.getBlob();\r\n         *    video.src = this.toURL();\r\n         * });\r\n         * \r\n         * // or otherwise\r\n         * recorder.setRecordingDuration(fiveMinutes).onRecordingStopped(function() {\r\n         *    var blob = this.getBlob();\r\n         *    video.src = this.toURL();\r\n         * });\r\n         */\r\n        setRecordingDuration: function(recordingDuration, callback) {\r\n            if (typeof recordingDuration === 'undefined') {\r\n                throw 'recordingDuration is required.';\r\n            }\r\n\r\n            if (typeof recordingDuration !== 'number') {\r\n                throw 'recordingDuration must be a number.';\r\n            }\r\n\r\n            self.recordingDuration = recordingDuration;\r\n            self.onRecordingStopped = callback || function() {};\r\n\r\n            return {\r\n                onRecordingStopped: function(callback) {\r\n                    self.onRecordingStopped = callback;\r\n                }\r\n            };\r\n        },\r\n\r\n        /**\r\n         * This method can be used to clear/reset all the recorded data.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @todo Figure out the difference between \"reset\" and \"clearRecordedData\" methods.\r\n         * @example\r\n         * recorder.clearRecordedData();\r\n         */\r\n        clearRecordedData: function() {\r\n            if (!mediaRecorder) {\r\n                warningLog();\r\n                return;\r\n            }\r\n\r\n            mediaRecorder.clearRecordedData();\r\n\r\n            if (!config.disableLogs) {\r\n                console.log('Cleared old recorded data.');\r\n            }\r\n        },\r\n\r\n        /**\r\n         * Get the recorded blob. Use this method inside the \"stopRecording\" callback.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * recorder.stopRecording(function() {\r\n         *     var blob = this.getBlob();\r\n         *\r\n         *     var file = new File([blob], 'filename.webm', {\r\n         *         type: 'video/webm'\r\n         *     });\r\n         *\r\n         *     var formData = new FormData();\r\n         *     formData.append('file', file); // upload \"File\" object rather than a \"Blob\"\r\n         *     uploadToServer(formData);\r\n         * });\r\n         * @returns {Blob} Returns recorded data as \"Blob\" object.\r\n         */\r\n        getBlob: function() {\r\n            if (!mediaRecorder) {\r\n                warningLog();\r\n                return;\r\n            }\r\n\r\n            return mediaRecorder.blob;\r\n        },\r\n\r\n        /**\r\n         * Get data-URI instead of Blob.\r\n         * @param {function} callback - Callback to get the Data-URI.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * recorder.stopRecording(function() {\r\n         *     recorder.getDataURL(function(dataURI) {\r\n         *         video.src = dataURI;\r\n         *     });\r\n         * });\r\n         */\r\n        getDataURL: getDataURL,\r\n\r\n        /**\r\n         * Get virtual/temporary URL. Usage of this URL is limited to current tab.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * recorder.stopRecording(function() {\r\n         *     video.src = this.toURL();\r\n         * });\r\n         * @returns {String} Returns a virtual/temporary URL for the recorded \"Blob\".\r\n         */\r\n        toURL: function() {\r\n            if (!mediaRecorder) {\r\n                warningLog();\r\n                return;\r\n            }\r\n\r\n            return URL.createObjectURL(mediaRecorder.blob);\r\n        },\r\n\r\n        /**\r\n         * Get internal recording object (i.e. internal module) e.g. MutliStreamRecorder, MediaStreamRecorder, StereoAudioRecorder or WhammyRecorder etc.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * var internalRecorder = recorder.getInternalRecorder();\r\n         * if(internalRecorder instanceof MultiStreamRecorder) {\r\n         *     internalRecorder.addStreams([newAudioStream]);\r\n         *     internalRecorder.resetVideoStreams([screenStream]);\r\n         * }\r\n         * @returns {Object} Returns internal recording object.\r\n         */\r\n        getInternalRecorder: function() {\r\n            return mediaRecorder;\r\n        },\r\n\r\n        /**\r\n         * Invoke save-as dialog to save the recorded blob into your disk.\r\n         * @param {string} fileName - Set your own file name.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * recorder.stopRecording(function() {\r\n         *     this.save('file-name');\r\n         *\r\n         *     // or manually:\r\n         *     invokeSaveAsDialog(this.getBlob(), 'filename.webm');\r\n         * });\r\n         */\r\n        save: function(fileName) {\r\n            if (!mediaRecorder) {\r\n                warningLog();\r\n                return;\r\n            }\r\n\r\n            invokeSaveAsDialog(mediaRecorder.blob, fileName);\r\n        },\r\n\r\n        /**\r\n         * This method gets a blob from indexed-DB storage.\r\n         * @param {function} callback - Callback to get the recorded blob.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * recorder.getFromDisk(function(dataURL) {\r\n         *     video.src = dataURL;\r\n         * });\r\n         */\r\n        getFromDisk: function(callback) {\r\n            if (!mediaRecorder) {\r\n                warningLog();\r\n                return;\r\n            }\r\n\r\n            RecordRTC.getFromDisk(config.type, callback);\r\n        },\r\n\r\n        /**\r\n         * This method appends an array of webp images to the recorded video-blob. It takes an \"array\" object.\r\n         * @type {Array.<Array>}\r\n         * @param {Array} arrayOfWebPImages - Array of webp images.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @todo This method should be deprecated.\r\n         * @example\r\n         * var arrayOfWebPImages = [];\r\n         * arrayOfWebPImages.push({\r\n         *     duration: index,\r\n         *     image: 'data:image/webp;base64,...'\r\n         * });\r\n         * recorder.setAdvertisementArray(arrayOfWebPImages);\r\n         */\r\n        setAdvertisementArray: function(arrayOfWebPImages) {\r\n            config.advertisement = [];\r\n\r\n            var length = arrayOfWebPImages.length;\r\n            for (var i = 0; i < length; i++) {\r\n                config.advertisement.push({\r\n                    duration: i,\r\n                    image: arrayOfWebPImages[i]\r\n                });\r\n            }\r\n        },\r\n\r\n        /**\r\n         * It is equivalent to <code class=\"str\">\"recorder.getBlob()\"</code> method. Usage of \"getBlob\" is recommended, though.\r\n         * @property {Blob} blob - Recorded Blob can be accessed using this property.\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @readonly\r\n         * @example\r\n         * recorder.stopRecording(function() {\r\n         *     var blob = this.blob;\r\n         *\r\n         *     // below one is recommended\r\n         *     var blob = this.getBlob();\r\n         * });\r\n         */\r\n        blob: null,\r\n\r\n        /**\r\n         * This works only with {recorderType:StereoAudioRecorder}. Use this property on \"stopRecording\" to verify the encoder's sample-rates.\r\n         * @property {number} bufferSize - Buffer-size used to encode the WAV container\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @readonly\r\n         * @example\r\n         * recorder.stopRecording(function() {\r\n         *     alert('Recorder used this buffer-size: ' + this.bufferSize);\r\n         * });\r\n         */\r\n        bufferSize: 0,\r\n\r\n        /**\r\n         * This works only with {recorderType:StereoAudioRecorder}. Use this property on \"stopRecording\" to verify the encoder's sample-rates.\r\n         * @property {number} sampleRate - Sample-rates used to encode the WAV container\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @readonly\r\n         * @example\r\n         * recorder.stopRecording(function() {\r\n         *     alert('Recorder used these sample-rates: ' + this.sampleRate);\r\n         * });\r\n         */\r\n        sampleRate: 0,\r\n\r\n        /**\r\n         * {recorderType:StereoAudioRecorder} returns ArrayBuffer object.\r\n         * @property {ArrayBuffer} buffer - Audio ArrayBuffer, supported only in Chrome.\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @readonly\r\n         * @example\r\n         * recorder.stopRecording(function() {\r\n         *     var arrayBuffer = this.buffer;\r\n         *     alert(arrayBuffer.byteLength);\r\n         * });\r\n         */\r\n        buffer: null,\r\n\r\n        /**\r\n         * This method resets the recorder. So that you can reuse single recorder instance many times.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * recorder.reset();\r\n         * recorder.startRecording();\r\n         */\r\n        reset: function() {\r\n            if (self.state === 'recording' && !config.disableLogs) {\r\n                console.warn('Stop an active recorder.');\r\n            }\r\n\r\n            if (mediaRecorder && typeof mediaRecorder.clearRecordedData === 'function') {\r\n                mediaRecorder.clearRecordedData();\r\n            }\r\n            mediaRecorder = null;\r\n            setState('inactive');\r\n            self.blob = null;\r\n        },\r\n\r\n        /**\r\n         * This method is called whenever recorder's state changes. Use this as an \"event\".\r\n         * @property {String} state - A recorder's state can be: recording, paused, stopped or inactive.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @instance\r\n         * @example\r\n         * recorder.onStateChanged = function(state) {\r\n         *     console.log('Recorder state: ', state);\r\n         * };\r\n         */\r\n        onStateChanged: function(state) {\r\n            if (!config.disableLogs) {\r\n                console.log('Recorder state changed:', state);\r\n            }\r\n        },\r\n\r\n        /**\r\n         * A recorder can have inactive, recording, paused or stopped states.\r\n         * @property {String} state - A recorder's state can be: recording, paused, stopped or inactive.\r\n         * @memberof RecordRTC\r\n         * @static\r\n         * @readonly\r\n         * @example\r\n         * // this looper function will keep you updated about the recorder's states.\r\n         * (function looper() {\r\n         *     document.querySelector('h1').innerHTML = 'Recorder\\'s state is: ' + recorder.state;\r\n         *     if(recorder.state === 'stopped') return; // ignore+stop\r\n         *     setTimeout(looper, 1000); // update after every 3-seconds\r\n         * })();\r\n         * recorder.startRecording();\r\n         */\r\n        state: 'inactive',\r\n\r\n        /**\r\n         * Get recorder's readonly state.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @example\r\n         * var state = recorder.getState();\r\n         * @returns {String} Returns recording state.\r\n         */\r\n        getState: function() {\r\n            return self.state;\r\n        },\r\n\r\n        /**\r\n         * Destroy RecordRTC instance. Clear all recorders and objects.\r\n         * @method\r\n         * @memberof RecordRTC\r\n         * @example\r\n         * recorder.destroy();\r\n         */\r\n        destroy: function() {\r\n            var disableLogsCache = config.disableLogs;\r\n\r\n            config = {\r\n                disableLogs: true\r\n            };\r\n            self.reset();\r\n            setState('destroyed');\r\n            returnObject = self = null;\r\n\r\n            if (Storage.AudioContextConstructor) {\r\n                Storage.AudioContextConstructor.close();\r\n                Storage.AudioContextConstructor = null;\r\n            }\r\n\r\n            config.disableLogs = disableLogsCache;\r\n\r\n            if (!config.disableLogs) {\r\n                console.log('RecordRTC is destroyed.');\r\n            }\r\n        },\r\n\r\n        /**\r\n         * RecordRTC version number\r\n         * @property {String} version - Release version number.\r\n         * @memberof RecordRTC\r\n         * @static\r\n         * @readonly\r\n         * @example\r\n         * alert(recorder.version);\r\n         */\r\n        version: '5.6.2'\r\n    };\r\n\r\n    if (!this) {\r\n        self = returnObject;\r\n        return returnObject;\r\n    }\r\n\r\n    // if someone wants to use RecordRTC with the \"new\" keyword.\r\n    for (var prop in returnObject) {\r\n        this[prop] = returnObject[prop];\r\n    }\r\n\r\n    self = this;\r\n\r\n    return returnObject;\r\n}\r\n\r\nRecordRTC.version = '5.6.2';\r\n\r\nif (typeof module !== 'undefined' /* && !!module.exports*/ ) {\r\n    module.exports = RecordRTC;\r\n}\r\n\r\nif (typeof define === 'function' && define.amd) {\r\n    define('RecordRTC', [], function() {\r\n        return RecordRTC;\r\n    });\r\n}\n\r\nRecordRTC.getFromDisk = function(type, callback) {\r\n    if (!callback) {\r\n        throw 'callback is mandatory.';\r\n    }\r\n\r\n    console.log('Getting recorded ' + (type === 'all' ? 'blobs' : type + ' blob ') + ' from disk!');\r\n    DiskStorage.Fetch(function(dataURL, _type) {\r\n        if (type !== 'all' && _type === type + 'Blob' && callback) {\r\n            callback(dataURL);\r\n        }\r\n\r\n        if (type === 'all' && callback) {\r\n            callback(dataURL, _type.replace('Blob', ''));\r\n        }\r\n    });\r\n};\r\n\r\n/**\r\n * This method can be used to store recorded blobs into IndexedDB storage.\r\n * @param {object} options - {audio: Blob, video: Blob, gif: Blob}\r\n * @method\r\n * @memberof RecordRTC\r\n * @example\r\n * RecordRTC.writeToDisk({\r\n *     audio: audioBlob,\r\n *     video: videoBlob,\r\n *     gif  : gifBlob\r\n * });\r\n */\r\nRecordRTC.writeToDisk = function(options) {\r\n    console.log('Writing recorded blob(s) to disk!');\r\n    options = options || {};\r\n    if (options.audio && options.video && options.gif) {\r\n        options.audio.getDataURL(function(audioDataURL) {\r\n            options.video.getDataURL(function(videoDataURL) {\r\n                options.gif.getDataURL(function(gifDataURL) {\r\n                    DiskStorage.Store({\r\n                        audioBlob: audioDataURL,\r\n                        videoBlob: videoDataURL,\r\n                        gifBlob: gifDataURL\r\n                    });\r\n                });\r\n            });\r\n        });\r\n    } else if (options.audio && options.video) {\r\n        options.audio.getDataURL(function(audioDataURL) {\r\n            options.video.getDataURL(function(videoDataURL) {\r\n                DiskStorage.Store({\r\n                    audioBlob: audioDataURL,\r\n                    videoBlob: videoDataURL\r\n                });\r\n            });\r\n        });\r\n    } else if (options.audio && options.gif) {\r\n        options.audio.getDataURL(function(audioDataURL) {\r\n            options.gif.getDataURL(function(gifDataURL) {\r\n                DiskStorage.Store({\r\n                    audioBlob: audioDataURL,\r\n                    gifBlob: gifDataURL\r\n                });\r\n            });\r\n        });\r\n    } else if (options.video && options.gif) {\r\n        options.video.getDataURL(function(videoDataURL) {\r\n            options.gif.getDataURL(function(gifDataURL) {\r\n                DiskStorage.Store({\r\n                    videoBlob: videoDataURL,\r\n                    gifBlob: gifDataURL\r\n                });\r\n            });\r\n        });\r\n    } else if (options.audio) {\r\n        options.audio.getDataURL(function(audioDataURL) {\r\n            DiskStorage.Store({\r\n                audioBlob: audioDataURL\r\n            });\r\n        });\r\n    } else if (options.video) {\r\n        options.video.getDataURL(function(videoDataURL) {\r\n            DiskStorage.Store({\r\n                videoBlob: videoDataURL\r\n            });\r\n        });\r\n    } else if (options.gif) {\r\n        options.gif.getDataURL(function(gifDataURL) {\r\n            DiskStorage.Store({\r\n                gifBlob: gifDataURL\r\n            });\r\n        });\r\n    }\r\n};\n\r\n// __________________________\r\n// RecordRTC-Configuration.js\r\n\r\n/**\r\n * {@link RecordRTCConfiguration} is an inner/private helper for {@link RecordRTC}.\r\n * @summary It configures the 2nd parameter passed over {@link RecordRTC} and returns a valid \"config\" object.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef RecordRTCConfiguration\r\n * @class\r\n * @example\r\n * var options = RecordRTCConfiguration(mediaStream, options);\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.\r\n * @param {object} config - {type:\"video\", disableLogs: true, numberOfAudioChannels: 1, bufferSize: 0, sampleRate: 0, video: HTMLVideoElement, getNativeBlob:true, etc.}\r\n */\r\n\r\nfunction RecordRTCConfiguration(mediaStream, config) {\r\n    if (!config.recorderType && !config.type) {\r\n        if (!!config.audio && !!config.video) {\r\n            config.type = 'video';\r\n        } else if (!!config.audio && !config.video) {\r\n            config.type = 'audio';\r\n        }\r\n    }\r\n\r\n    if (config.recorderType && !config.type) {\r\n        if (config.recorderType === WhammyRecorder || config.recorderType === CanvasRecorder || (typeof WebAssemblyRecorder !== 'undefined' && config.recorderType === WebAssemblyRecorder)) {\r\n            config.type = 'video';\r\n        } else if (config.recorderType === GifRecorder) {\r\n            config.type = 'gif';\r\n        } else if (config.recorderType === StereoAudioRecorder) {\r\n            config.type = 'audio';\r\n        } else if (config.recorderType === MediaStreamRecorder) {\r\n            if (getTracks(mediaStream, 'audio').length && getTracks(mediaStream, 'video').length) {\r\n                config.type = 'video';\r\n            } else if (!getTracks(mediaStream, 'audio').length && getTracks(mediaStream, 'video').length) {\r\n                config.type = 'video';\r\n            } else if (getTracks(mediaStream, 'audio').length && !getTracks(mediaStream, 'video').length) {\r\n                config.type = 'audio';\r\n            } else {\r\n                // config.type = 'UnKnown';\r\n            }\r\n        }\r\n    }\r\n\r\n    if (typeof MediaStreamRecorder !== 'undefined' && typeof MediaRecorder !== 'undefined' && 'requestData' in MediaRecorder.prototype) {\r\n        if (!config.mimeType) {\r\n            config.mimeType = 'video/webm';\r\n        }\r\n\r\n        if (!config.type) {\r\n            config.type = config.mimeType.split('/')[0];\r\n        }\r\n\r\n        if (!config.bitsPerSecond) {\r\n            // config.bitsPerSecond = 128000;\r\n        }\r\n    }\r\n\r\n    // consider default type=audio\r\n    if (!config.type) {\r\n        if (config.mimeType) {\r\n            config.type = config.mimeType.split('/')[0];\r\n        }\r\n        if (!config.type) {\r\n            config.type = 'audio';\r\n        }\r\n    }\r\n\r\n    return config;\r\n}\n\r\n// __________________\r\n// GetRecorderType.js\r\n\r\n/**\r\n * {@link GetRecorderType} is an inner/private helper for {@link RecordRTC}.\r\n * @summary It returns best recorder-type available for your browser.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef GetRecorderType\r\n * @class\r\n * @example\r\n * var RecorderType = GetRecorderType(options);\r\n * var recorder = new RecorderType(options);\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.\r\n * @param {object} config - {type:\"video\", disableLogs: true, numberOfAudioChannels: 1, bufferSize: 0, sampleRate: 0, video: HTMLVideoElement, etc.}\r\n */\r\n\r\nfunction GetRecorderType(mediaStream, config) {\r\n    var recorder;\r\n\r\n    // StereoAudioRecorder can work with all three: Edge, Firefox and Chrome\r\n    // todo: detect if it is Edge, then auto use: StereoAudioRecorder\r\n    if (isChrome || isEdge || isOpera) {\r\n        // Media Stream Recording API has not been implemented in chrome yet;\r\n        // That's why using WebAudio API to record stereo audio in WAV format\r\n        recorder = StereoAudioRecorder;\r\n    }\r\n\r\n    if (typeof MediaRecorder !== 'undefined' && 'requestData' in MediaRecorder.prototype && !isChrome) {\r\n        recorder = MediaStreamRecorder;\r\n    }\r\n\r\n    // video recorder (in WebM format)\r\n    if (config.type === 'video' && (isChrome || isOpera)) {\r\n        recorder = WhammyRecorder;\r\n\r\n        if (typeof WebAssemblyRecorder !== 'undefined' && typeof ReadableStream !== 'undefined') {\r\n            recorder = WebAssemblyRecorder;\r\n        }\r\n    }\r\n\r\n    // video recorder (in Gif format)\r\n    if (config.type === 'gif') {\r\n        recorder = GifRecorder;\r\n    }\r\n\r\n    // html2canvas recording!\r\n    if (config.type === 'canvas') {\r\n        recorder = CanvasRecorder;\r\n    }\r\n\r\n    if (isMediaRecorderCompatible() && recorder !== CanvasRecorder && recorder !== GifRecorder && typeof MediaRecorder !== 'undefined' && 'requestData' in MediaRecorder.prototype) {\r\n        if (getTracks(mediaStream, 'video').length || getTracks(mediaStream, 'audio').length) {\r\n            // audio-only recording\r\n            if (config.type === 'audio') {\r\n                if (typeof MediaRecorder.isTypeSupported === 'function' && MediaRecorder.isTypeSupported('audio/webm')) {\r\n                    recorder = MediaStreamRecorder;\r\n                }\r\n                // else recorder = StereoAudioRecorder;\r\n            } else {\r\n                // video or screen tracks\r\n                if (typeof MediaRecorder.isTypeSupported === 'function' && MediaRecorder.isTypeSupported('video/webm')) {\r\n                    recorder = MediaStreamRecorder;\r\n                }\r\n            }\r\n        }\r\n    }\r\n\r\n    if (mediaStream instanceof Array && mediaStream.length) {\r\n        recorder = MultiStreamRecorder;\r\n    }\r\n\r\n    if (config.recorderType) {\r\n        recorder = config.recorderType;\r\n    }\r\n\r\n    if (!config.disableLogs && !!recorder && !!recorder.name) {\r\n        console.log('Using recorderType:', recorder.name || recorder.constructor.name);\r\n    }\r\n\r\n    if (!recorder && isSafari) {\r\n        recorder = MediaStreamRecorder;\r\n    }\r\n\r\n    return recorder;\r\n}\n\r\n// _____________\r\n// MRecordRTC.js\r\n\r\n/**\r\n * MRecordRTC runs on top of {@link RecordRTC} to bring multiple recordings in a single place, by providing simple API.\r\n * @summary MRecordRTC stands for \"Multiple-RecordRTC\".\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef MRecordRTC\r\n * @class\r\n * @example\r\n * var recorder = new MRecordRTC();\r\n * recorder.addStream(MediaStream);\r\n * recorder.mediaType = {\r\n *     audio: true, // or StereoAudioRecorder or MediaStreamRecorder\r\n *     video: true, // or WhammyRecorder or MediaStreamRecorder or WebAssemblyRecorder or CanvasRecorder\r\n *     gif: true    // or GifRecorder\r\n * };\r\n * // mimeType is optional and should be set only in advance cases.\r\n * recorder.mimeType = {\r\n *     audio: 'audio/wav',\r\n *     video: 'video/webm',\r\n *     gif:   'image/gif'\r\n * };\r\n * recorder.startRecording();\r\n * @see For further information:\r\n * @see {@link https://github.com/muaz-khan/RecordRTC/tree/master/MRecordRTC|MRecordRTC Source Code}\r\n * @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.\r\n * @requires {@link RecordRTC}\r\n */\r\n\r\nfunction MRecordRTC(mediaStream) {\r\n\r\n    /**\r\n     * This method attaches MediaStream object to {@link MRecordRTC}.\r\n     * @param {MediaStream} mediaStream - A MediaStream object, either fetched using getUserMedia API, or generated using captureStreamUntilEnded or WebAudio API.\r\n     * @method\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * recorder.addStream(MediaStream);\r\n     */\r\n    this.addStream = function(_mediaStream) {\r\n        if (_mediaStream) {\r\n            mediaStream = _mediaStream;\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This property can be used to set the recording type e.g. audio, or video, or gif, or canvas.\r\n     * @property {object} mediaType - {audio: true, video: true, gif: true}\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * var recorder = new MRecordRTC();\r\n     * recorder.mediaType = {\r\n     *     audio: true, // TRUE or StereoAudioRecorder or MediaStreamRecorder\r\n     *     video: true, // TRUE or WhammyRecorder or MediaStreamRecorder or WebAssemblyRecorder or CanvasRecorder\r\n     *     gif  : true  // TRUE or GifRecorder\r\n     * };\r\n     */\r\n    this.mediaType = {\r\n        audio: true,\r\n        video: true\r\n    };\r\n\r\n    /**\r\n     * This method starts recording.\r\n     * @method\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * recorder.startRecording();\r\n     */\r\n    this.startRecording = function() {\r\n        var mediaType = this.mediaType;\r\n        var recorderType;\r\n        var mimeType = this.mimeType || {\r\n            audio: null,\r\n            video: null,\r\n            gif: null\r\n        };\r\n\r\n        if (typeof mediaType.audio !== 'function' && isMediaRecorderCompatible() && !getTracks(mediaStream, 'audio').length) {\r\n            mediaType.audio = false;\r\n        }\r\n\r\n        if (typeof mediaType.video !== 'function' && isMediaRecorderCompatible() && !getTracks(mediaStream, 'video').length) {\r\n            mediaType.video = false;\r\n        }\r\n\r\n        if (typeof mediaType.gif !== 'function' && isMediaRecorderCompatible() && !getTracks(mediaStream, 'video').length) {\r\n            mediaType.gif = false;\r\n        }\r\n\r\n        if (!mediaType.audio && !mediaType.video && !mediaType.gif) {\r\n            throw 'MediaStream must have either audio or video tracks.';\r\n        }\r\n\r\n        if (!!mediaType.audio) {\r\n            recorderType = null;\r\n            if (typeof mediaType.audio === 'function') {\r\n                recorderType = mediaType.audio;\r\n            }\r\n\r\n            this.audioRecorder = new RecordRTC(mediaStream, {\r\n                type: 'audio',\r\n                bufferSize: this.bufferSize,\r\n                sampleRate: this.sampleRate,\r\n                numberOfAudioChannels: this.numberOfAudioChannels || 2,\r\n                disableLogs: this.disableLogs,\r\n                recorderType: recorderType,\r\n                mimeType: mimeType.audio,\r\n                timeSlice: this.timeSlice,\r\n                onTimeStamp: this.onTimeStamp\r\n            });\r\n\r\n            if (!mediaType.video) {\r\n                this.audioRecorder.startRecording();\r\n            }\r\n        }\r\n\r\n        if (!!mediaType.video) {\r\n            recorderType = null;\r\n            if (typeof mediaType.video === 'function') {\r\n                recorderType = mediaType.video;\r\n            }\r\n\r\n            var newStream = mediaStream;\r\n\r\n            if (isMediaRecorderCompatible() && !!mediaType.audio && typeof mediaType.audio === 'function') {\r\n                var videoTrack = getTracks(mediaStream, 'video')[0];\r\n\r\n                if (isFirefox) {\r\n                    newStream = new MediaStream();\r\n                    newStream.addTrack(videoTrack);\r\n\r\n                    if (recorderType && recorderType === WhammyRecorder) {\r\n                        // Firefox does NOT supports webp-encoding yet\r\n                        // But Firefox do supports WebAssemblyRecorder\r\n                        recorderType = MediaStreamRecorder;\r\n                    }\r\n                } else {\r\n                    newStream = new MediaStream();\r\n                    newStream.addTrack(videoTrack);\r\n                }\r\n            }\r\n\r\n            this.videoRecorder = new RecordRTC(newStream, {\r\n                type: 'video',\r\n                video: this.video,\r\n                canvas: this.canvas,\r\n                frameInterval: this.frameInterval || 10,\r\n                disableLogs: this.disableLogs,\r\n                recorderType: recorderType,\r\n                mimeType: mimeType.video,\r\n                timeSlice: this.timeSlice,\r\n                onTimeStamp: this.onTimeStamp,\r\n                workerPath: this.workerPath,\r\n                webAssemblyPath: this.webAssemblyPath,\r\n                frameRate: this.frameRate, // used by WebAssemblyRecorder; values: usually 30; accepts any.\r\n                bitrate: this.bitrate // used by WebAssemblyRecorder; values: 0 to 1000+\r\n            });\r\n\r\n            if (!mediaType.audio) {\r\n                this.videoRecorder.startRecording();\r\n            }\r\n        }\r\n\r\n        if (!!mediaType.audio && !!mediaType.video) {\r\n            var self = this;\r\n\r\n            var isSingleRecorder = isMediaRecorderCompatible() === true;\r\n\r\n            if (mediaType.audio instanceof StereoAudioRecorder && !!mediaType.video) {\r\n                isSingleRecorder = false;\r\n            } else if (mediaType.audio !== true && mediaType.video !== true && mediaType.audio !== mediaType.video) {\r\n                isSingleRecorder = false;\r\n            }\r\n\r\n            if (isSingleRecorder === true) {\r\n                self.audioRecorder = null;\r\n                self.videoRecorder.startRecording();\r\n            } else {\r\n                self.videoRecorder.initRecorder(function() {\r\n                    self.audioRecorder.initRecorder(function() {\r\n                        // Both recorders are ready to record things accurately\r\n                        self.videoRecorder.startRecording();\r\n                        self.audioRecorder.startRecording();\r\n                    });\r\n                });\r\n            }\r\n        }\r\n\r\n        if (!!mediaType.gif) {\r\n            recorderType = null;\r\n            if (typeof mediaType.gif === 'function') {\r\n                recorderType = mediaType.gif;\r\n            }\r\n            this.gifRecorder = new RecordRTC(mediaStream, {\r\n                type: 'gif',\r\n                frameRate: this.frameRate || 200,\r\n                quality: this.quality || 10,\r\n                disableLogs: this.disableLogs,\r\n                recorderType: recorderType,\r\n                mimeType: mimeType.gif\r\n            });\r\n            this.gifRecorder.startRecording();\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method stops recording.\r\n     * @param {function} callback - Callback function is invoked when all encoders finished their jobs.\r\n     * @method\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * recorder.stopRecording(function(recording){\r\n     *     var audioBlob = recording.audio;\r\n     *     var videoBlob = recording.video;\r\n     *     var gifBlob   = recording.gif;\r\n     * });\r\n     */\r\n    this.stopRecording = function(callback) {\r\n        callback = callback || function() {};\r\n\r\n        if (this.audioRecorder) {\r\n            this.audioRecorder.stopRecording(function(blobURL) {\r\n                callback(blobURL, 'audio');\r\n            });\r\n        }\r\n\r\n        if (this.videoRecorder) {\r\n            this.videoRecorder.stopRecording(function(blobURL) {\r\n                callback(blobURL, 'video');\r\n            });\r\n        }\r\n\r\n        if (this.gifRecorder) {\r\n            this.gifRecorder.stopRecording(function(blobURL) {\r\n                callback(blobURL, 'gif');\r\n            });\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method pauses recording.\r\n     * @method\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * recorder.pauseRecording();\r\n     */\r\n    this.pauseRecording = function() {\r\n        if (this.audioRecorder) {\r\n            this.audioRecorder.pauseRecording();\r\n        }\r\n\r\n        if (this.videoRecorder) {\r\n            this.videoRecorder.pauseRecording();\r\n        }\r\n\r\n        if (this.gifRecorder) {\r\n            this.gifRecorder.pauseRecording();\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method resumes recording.\r\n     * @method\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * recorder.resumeRecording();\r\n     */\r\n    this.resumeRecording = function() {\r\n        if (this.audioRecorder) {\r\n            this.audioRecorder.resumeRecording();\r\n        }\r\n\r\n        if (this.videoRecorder) {\r\n            this.videoRecorder.resumeRecording();\r\n        }\r\n\r\n        if (this.gifRecorder) {\r\n            this.gifRecorder.resumeRecording();\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method can be used to manually get all recorded blobs.\r\n     * @param {function} callback - All recorded blobs are passed back to the \"callback\" function.\r\n     * @method\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * recorder.getBlob(function(recording){\r\n     *     var audioBlob = recording.audio;\r\n     *     var videoBlob = recording.video;\r\n     *     var gifBlob   = recording.gif;\r\n     * });\r\n     * // or\r\n     * var audioBlob = recorder.getBlob().audio;\r\n     * var videoBlob = recorder.getBlob().video;\r\n     */\r\n    this.getBlob = function(callback) {\r\n        var output = {};\r\n\r\n        if (this.audioRecorder) {\r\n            output.audio = this.audioRecorder.getBlob();\r\n        }\r\n\r\n        if (this.videoRecorder) {\r\n            output.video = this.videoRecorder.getBlob();\r\n        }\r\n\r\n        if (this.gifRecorder) {\r\n            output.gif = this.gifRecorder.getBlob();\r\n        }\r\n\r\n        if (callback) {\r\n            callback(output);\r\n        }\r\n\r\n        return output;\r\n    };\r\n\r\n    /**\r\n     * Destroy all recorder instances.\r\n     * @method\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * recorder.destroy();\r\n     */\r\n    this.destroy = function() {\r\n        if (this.audioRecorder) {\r\n            this.audioRecorder.destroy();\r\n            this.audioRecorder = null;\r\n        }\r\n\r\n        if (this.videoRecorder) {\r\n            this.videoRecorder.destroy();\r\n            this.videoRecorder = null;\r\n        }\r\n\r\n        if (this.gifRecorder) {\r\n            this.gifRecorder.destroy();\r\n            this.gifRecorder = null;\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method can be used to manually get all recorded blobs' DataURLs.\r\n     * @param {function} callback - All recorded blobs' DataURLs are passed back to the \"callback\" function.\r\n     * @method\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * recorder.getDataURL(function(recording){\r\n     *     var audioDataURL = recording.audio;\r\n     *     var videoDataURL = recording.video;\r\n     *     var gifDataURL   = recording.gif;\r\n     * });\r\n     */\r\n    this.getDataURL = function(callback) {\r\n        this.getBlob(function(blob) {\r\n            if (blob.audio && blob.video) {\r\n                getDataURL(blob.audio, function(_audioDataURL) {\r\n                    getDataURL(blob.video, function(_videoDataURL) {\r\n                        callback({\r\n                            audio: _audioDataURL,\r\n                            video: _videoDataURL\r\n                        });\r\n                    });\r\n                });\r\n            } else if (blob.audio) {\r\n                getDataURL(blob.audio, function(_audioDataURL) {\r\n                    callback({\r\n                        audio: _audioDataURL\r\n                    });\r\n                });\r\n            } else if (blob.video) {\r\n                getDataURL(blob.video, function(_videoDataURL) {\r\n                    callback({\r\n                        video: _videoDataURL\r\n                    });\r\n                });\r\n            }\r\n        });\r\n\r\n        function getDataURL(blob, callback00) {\r\n            if (typeof Worker !== 'undefined') {\r\n                var webWorker = processInWebWorker(function readFile(_blob) {\r\n                    postMessage(new FileReaderSync().readAsDataURL(_blob));\r\n                });\r\n\r\n                webWorker.onmessage = function(event) {\r\n                    callback00(event.data);\r\n                };\r\n\r\n                webWorker.postMessage(blob);\r\n            } else {\r\n                var reader = new FileReader();\r\n                reader.readAsDataURL(blob);\r\n                reader.onload = function(event) {\r\n                    callback00(event.target.result);\r\n                };\r\n            }\r\n        }\r\n\r\n        function processInWebWorker(_function) {\r\n            var blob = URL.createObjectURL(new Blob([_function.toString(),\r\n                'this.onmessage =  function (eee) {' + _function.name + '(eee.data);}'\r\n            ], {\r\n                type: 'application/javascript'\r\n            }));\r\n\r\n            var worker = new Worker(blob);\r\n            var url;\r\n            if (typeof URL !== 'undefined') {\r\n                url = URL;\r\n            } else if (typeof webkitURL !== 'undefined') {\r\n                url = webkitURL;\r\n            } else {\r\n                throw 'Neither URL nor webkitURL detected.';\r\n            }\r\n            url.revokeObjectURL(blob);\r\n            return worker;\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method can be used to ask {@link MRecordRTC} to write all recorded blobs into IndexedDB storage.\r\n     * @method\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * recorder.writeToDisk();\r\n     */\r\n    this.writeToDisk = function() {\r\n        RecordRTC.writeToDisk({\r\n            audio: this.audioRecorder,\r\n            video: this.videoRecorder,\r\n            gif: this.gifRecorder\r\n        });\r\n    };\r\n\r\n    /**\r\n     * This method can be used to invoke a save-as dialog for all recorded blobs.\r\n     * @param {object} args - {audio: 'audio-name', video: 'video-name', gif: 'gif-name'}\r\n     * @method\r\n     * @memberof MRecordRTC\r\n     * @example\r\n     * recorder.save({\r\n     *     audio: 'audio-file-name',\r\n     *     video: 'video-file-name',\r\n     *     gif  : 'gif-file-name'\r\n     * });\r\n     */\r\n    this.save = function(args) {\r\n        args = args || {\r\n            audio: true,\r\n            video: true,\r\n            gif: true\r\n        };\r\n\r\n        if (!!args.audio && this.audioRecorder) {\r\n            this.audioRecorder.save(typeof args.audio === 'string' ? args.audio : '');\r\n        }\r\n\r\n        if (!!args.video && this.videoRecorder) {\r\n            this.videoRecorder.save(typeof args.video === 'string' ? args.video : '');\r\n        }\r\n        if (!!args.gif && this.gifRecorder) {\r\n            this.gifRecorder.save(typeof args.gif === 'string' ? args.gif : '');\r\n        }\r\n    };\r\n}\r\n\r\n/**\r\n * This method can be used to get all recorded blobs from IndexedDB storage.\r\n * @param {string} type - 'all' or 'audio' or 'video' or 'gif'\r\n * @param {function} callback - Callback function to get all stored blobs.\r\n * @method\r\n * @memberof MRecordRTC\r\n * @example\r\n * MRecordRTC.getFromDisk('all', function(dataURL, type){\r\n *     if(type === 'audio') { }\r\n *     if(type === 'video') { }\r\n *     if(type === 'gif')   { }\r\n * });\r\n */\r\nMRecordRTC.getFromDisk = RecordRTC.getFromDisk;\r\n\r\n/**\r\n * This method can be used to store recorded blobs into IndexedDB storage.\r\n * @param {object} options - {audio: Blob, video: Blob, gif: Blob}\r\n * @method\r\n * @memberof MRecordRTC\r\n * @example\r\n * MRecordRTC.writeToDisk({\r\n *     audio: audioBlob,\r\n *     video: videoBlob,\r\n *     gif  : gifBlob\r\n * });\r\n */\r\nMRecordRTC.writeToDisk = RecordRTC.writeToDisk;\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.MRecordRTC = MRecordRTC;\r\n}\n\r\nvar browserFakeUserAgent = 'Fake/5.0 (FakeOS) AppleWebKit/123 (KHTML, like Gecko) Fake/12.3.4567.89 Fake/123.45';\r\n\r\n(function(that) {\r\n    if (!that) {\r\n        return;\r\n    }\r\n\r\n    if (typeof window !== 'undefined') {\r\n        return;\r\n    }\r\n\r\n    if (typeof global === 'undefined') {\r\n        return;\r\n    }\r\n\r\n    global.navigator = {\r\n        userAgent: browserFakeUserAgent,\r\n        getUserMedia: function() {}\r\n    };\r\n\r\n    if (!global.console) {\r\n        global.console = {};\r\n    }\r\n\r\n    if (typeof global.console.log === 'undefined' || typeof global.console.error === 'undefined') {\r\n        global.console.error = global.console.log = global.console.log || function() {\r\n            console.log(arguments);\r\n        };\r\n    }\r\n\r\n    if (typeof document === 'undefined') {\r\n        /*global document:true */\r\n        that.document = {\r\n            documentElement: {\r\n                appendChild: function() {\r\n                    return '';\r\n                }\r\n            }\r\n        };\r\n\r\n        document.createElement = document.captureStream = document.mozCaptureStream = function() {\r\n            var obj = {\r\n                getContext: function() {\r\n                    return obj;\r\n                },\r\n                play: function() {},\r\n                pause: function() {},\r\n                drawImage: function() {},\r\n                toDataURL: function() {\r\n                    return '';\r\n                },\r\n                style: {}\r\n            };\r\n            return obj;\r\n        };\r\n\r\n        that.HTMLVideoElement = function() {};\r\n    }\r\n\r\n    if (typeof location === 'undefined') {\r\n        /*global location:true */\r\n        that.location = {\r\n            protocol: 'file:',\r\n            href: '',\r\n            hash: ''\r\n        };\r\n    }\r\n\r\n    if (typeof screen === 'undefined') {\r\n        /*global screen:true */\r\n        that.screen = {\r\n            width: 0,\r\n            height: 0\r\n        };\r\n    }\r\n\r\n    if (typeof URL === 'undefined') {\r\n        /*global screen:true */\r\n        that.URL = {\r\n            createObjectURL: function() {\r\n                return '';\r\n            },\r\n            revokeObjectURL: function() {\r\n                return '';\r\n            }\r\n        };\r\n    }\r\n\r\n    /*global window:true */\r\n    that.window = global;\r\n})(typeof global !== 'undefined' ? global : null);\n\r\n// _____________________________\r\n// Cross-Browser-Declarations.js\r\n\r\n// animation-frame used in WebM recording\r\n\r\n/*jshint -W079 */\r\nvar requestAnimationFrame = window.requestAnimationFrame;\r\nif (typeof requestAnimationFrame === 'undefined') {\r\n    if (typeof webkitRequestAnimationFrame !== 'undefined') {\r\n        /*global requestAnimationFrame:true */\r\n        requestAnimationFrame = webkitRequestAnimationFrame;\r\n    } else if (typeof mozRequestAnimationFrame !== 'undefined') {\r\n        /*global requestAnimationFrame:true */\r\n        requestAnimationFrame = mozRequestAnimationFrame;\r\n    } else if (typeof msRequestAnimationFrame !== 'undefined') {\r\n        /*global requestAnimationFrame:true */\r\n        requestAnimationFrame = msRequestAnimationFrame;\r\n    } else if (typeof requestAnimationFrame === 'undefined') {\r\n        // via: https://gist.github.com/paulirish/1579671\r\n        var lastTime = 0;\r\n\r\n        /*global requestAnimationFrame:true */\r\n        requestAnimationFrame = function(callback, element) {\r\n            var currTime = new Date().getTime();\r\n            var timeToCall = Math.max(0, 16 - (currTime - lastTime));\r\n            var id = setTimeout(function() {\r\n                callback(currTime + timeToCall);\r\n            }, timeToCall);\r\n            lastTime = currTime + timeToCall;\r\n            return id;\r\n        };\r\n    }\r\n}\r\n\r\n/*jshint -W079 */\r\nvar cancelAnimationFrame = window.cancelAnimationFrame;\r\nif (typeof cancelAnimationFrame === 'undefined') {\r\n    if (typeof webkitCancelAnimationFrame !== 'undefined') {\r\n        /*global cancelAnimationFrame:true */\r\n        cancelAnimationFrame = webkitCancelAnimationFrame;\r\n    } else if (typeof mozCancelAnimationFrame !== 'undefined') {\r\n        /*global cancelAnimationFrame:true */\r\n        cancelAnimationFrame = mozCancelAnimationFrame;\r\n    } else if (typeof msCancelAnimationFrame !== 'undefined') {\r\n        /*global cancelAnimationFrame:true */\r\n        cancelAnimationFrame = msCancelAnimationFrame;\r\n    } else if (typeof cancelAnimationFrame === 'undefined') {\r\n        /*global cancelAnimationFrame:true */\r\n        cancelAnimationFrame = function(id) {\r\n            clearTimeout(id);\r\n        };\r\n    }\r\n}\r\n\r\n// WebAudio API representer\r\nvar AudioContext = window.AudioContext;\r\n\r\nif (typeof AudioContext === 'undefined') {\r\n    if (typeof webkitAudioContext !== 'undefined') {\r\n        /*global AudioContext:true */\r\n        AudioContext = webkitAudioContext;\r\n    }\r\n\r\n    if (typeof mozAudioContext !== 'undefined') {\r\n        /*global AudioContext:true */\r\n        AudioContext = mozAudioContext;\r\n    }\r\n}\r\n\r\n/*jshint -W079 */\r\nvar URL = window.URL;\r\n\r\nif (typeof URL === 'undefined' && typeof webkitURL !== 'undefined') {\r\n    /*global URL:true */\r\n    URL = webkitURL;\r\n}\r\n\r\nif (typeof navigator !== 'undefined' && typeof navigator.getUserMedia === 'undefined') { // maybe window.navigator?\r\n    if (typeof navigator.webkitGetUserMedia !== 'undefined') {\r\n        navigator.getUserMedia = navigator.webkitGetUserMedia;\r\n    }\r\n\r\n    if (typeof navigator.mozGetUserMedia !== 'undefined') {\r\n        navigator.getUserMedia = navigator.mozGetUserMedia;\r\n    }\r\n}\r\n\r\nvar isEdge = navigator.userAgent.indexOf('Edge') !== -1 && (!!navigator.msSaveBlob || !!navigator.msSaveOrOpenBlob);\r\nvar isOpera = !!window.opera || navigator.userAgent.indexOf('OPR/') !== -1;\r\nvar isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') > -1 && ('netscape' in window) && / rv:/.test(navigator.userAgent);\r\nvar isChrome = (!isOpera && !isEdge && !!navigator.webkitGetUserMedia) || isElectron() || navigator.userAgent.toLowerCase().indexOf('chrome/') !== -1;\r\n\r\nvar isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);\r\n\r\nif (isSafari && !isChrome && navigator.userAgent.indexOf('CriOS') !== -1) {\r\n    isSafari = false;\r\n    isChrome = true;\r\n}\r\n\r\nvar MediaStream = window.MediaStream;\r\n\r\nif (typeof MediaStream === 'undefined' && typeof webkitMediaStream !== 'undefined') {\r\n    MediaStream = webkitMediaStream;\r\n}\r\n\r\n/*global MediaStream:true */\r\nif (typeof MediaStream !== 'undefined') {\r\n    // override \"stop\" method for all browsers\r\n    if (typeof MediaStream.prototype.stop === 'undefined') {\r\n        MediaStream.prototype.stop = function() {\r\n            this.getTracks().forEach(function(track) {\r\n                track.stop();\r\n            });\r\n        };\r\n    }\r\n}\r\n\r\n// below function via: http://goo.gl/B3ae8c\r\n/**\r\n * Return human-readable file size.\r\n * @param {number} bytes - Pass bytes and get formatted string.\r\n * @returns {string} - formatted string\r\n * @example\r\n * bytesToSize(1024*1024*5) === '5 GB'\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n */\r\nfunction bytesToSize(bytes) {\r\n    var k = 1000;\r\n    var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];\r\n    if (bytes === 0) {\r\n        return '0 Bytes';\r\n    }\r\n    var i = parseInt(Math.floor(Math.log(bytes) / Math.log(k)), 10);\r\n    return (bytes / Math.pow(k, i)).toPrecision(3) + ' ' + sizes[i];\r\n}\r\n\r\n/**\r\n * @param {Blob} file - File or Blob object. This parameter is required.\r\n * @param {string} fileName - Optional file name e.g. \"Recorded-Video.webm\"\r\n * @example\r\n * invokeSaveAsDialog(blob or file, [optional] fileName);\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n */\r\nfunction invokeSaveAsDialog(file, fileName) {\r\n    if (!file) {\r\n        throw 'Blob object is required.';\r\n    }\r\n\r\n    if (!file.type) {\r\n        try {\r\n            file.type = 'video/webm';\r\n        } catch (e) {}\r\n    }\r\n\r\n    var fileExtension = (file.type || 'video/webm').split('/')[1];\r\n    if (fileExtension.indexOf(';') !== -1) {\r\n        // extended mimetype, e.g. 'video/webm;codecs=vp8,opus'\r\n        fileExtension = fileExtension.split(';')[0];\r\n    }\r\n    if (fileName && fileName.indexOf('.') !== -1) {\r\n        var splitted = fileName.split('.');\r\n        fileName = splitted[0];\r\n        fileExtension = splitted[1];\r\n    }\r\n\r\n    var fileFullName = (fileName || (Math.round(Math.random() * 9999999999) + 888888888)) + '.' + fileExtension;\r\n\r\n    if (typeof navigator.msSaveOrOpenBlob !== 'undefined') {\r\n        return navigator.msSaveOrOpenBlob(file, fileFullName);\r\n    } else if (typeof navigator.msSaveBlob !== 'undefined') {\r\n        return navigator.msSaveBlob(file, fileFullName);\r\n    }\r\n\r\n    var hyperlink = document.createElement('a');\r\n    hyperlink.href = URL.createObjectURL(file);\r\n    hyperlink.download = fileFullName;\r\n\r\n    hyperlink.style = 'display:none;opacity:0;color:transparent;';\r\n    (document.body || document.documentElement).appendChild(hyperlink);\r\n\r\n    if (typeof hyperlink.click === 'function') {\r\n        hyperlink.click();\r\n    } else {\r\n        hyperlink.target = '_blank';\r\n        hyperlink.dispatchEvent(new MouseEvent('click', {\r\n            view: window,\r\n            bubbles: true,\r\n            cancelable: true\r\n        }));\r\n    }\r\n\r\n    URL.revokeObjectURL(hyperlink.href);\r\n}\r\n\r\n/**\r\n * from: https://github.com/cheton/is-electron/blob/master/index.js\r\n **/\r\nfunction isElectron() {\r\n    // Renderer process\r\n    if (typeof window !== 'undefined' && typeof window.process === 'object' && window.process.type === 'renderer') {\r\n        return true;\r\n    }\r\n\r\n    // Main process\r\n    if (typeof process !== 'undefined' && typeof process.versions === 'object' && !!process.versions.electron) {\r\n        return true;\r\n    }\r\n\r\n    // Detect the user agent when the `nodeIntegration` option is set to true\r\n    if (typeof navigator === 'object' && typeof navigator.userAgent === 'string' && navigator.userAgent.indexOf('Electron') >= 0) {\r\n        return true;\r\n    }\r\n\r\n    return false;\r\n}\r\n\r\nfunction getTracks(stream, kind) {\r\n    if (!stream || !stream.getTracks) {\r\n        return [];\r\n    }\r\n\r\n    return stream.getTracks().filter(function(t) {\r\n        return t.kind === (kind || 'audio');\r\n    });\r\n}\r\n\r\nfunction setSrcObject(stream, element) {\r\n    if ('srcObject' in element) {\r\n        element.srcObject = stream;\r\n    } else if ('mozSrcObject' in element) {\r\n        element.mozSrcObject = stream;\r\n    } else {\r\n        element.srcObject = stream;\r\n    }\r\n}\r\n\r\n/**\r\n * @param {Blob} file - File or Blob object.\r\n * @param {function} callback - Callback function.\r\n * @example\r\n * getSeekableBlob(blob or file, callback);\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n */\r\nfunction getSeekableBlob(inputBlob, callback) {\r\n    // EBML.js copyrights goes to: https://github.com/legokichi/ts-ebml\r\n    if (typeof EBML === 'undefined') {\r\n        throw new Error('Please link: https://www.webrtc-experiment.com/EBML.js');\r\n    }\r\n\r\n    var reader = new EBML.Reader();\r\n    var decoder = new EBML.Decoder();\r\n    var tools = EBML.tools;\r\n\r\n    var fileReader = new FileReader();\r\n    fileReader.onload = function(e) {\r\n        var ebmlElms = decoder.decode(this.result);\r\n        ebmlElms.forEach(function(element) {\r\n            reader.read(element);\r\n        });\r\n        reader.stop();\r\n        var refinedMetadataBuf = tools.makeMetadataSeekable(reader.metadatas, reader.duration, reader.cues);\r\n        var body = this.result.slice(reader.metadataSize);\r\n        var newBlob = new Blob([refinedMetadataBuf, body], {\r\n            type: 'video/webm'\r\n        });\r\n\r\n        callback(newBlob);\r\n    };\r\n    fileReader.readAsArrayBuffer(inputBlob);\r\n}\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.invokeSaveAsDialog = invokeSaveAsDialog;\r\n    RecordRTC.getTracks = getTracks;\r\n    RecordRTC.getSeekableBlob = getSeekableBlob;\r\n    RecordRTC.bytesToSize = bytesToSize;\r\n    RecordRTC.isElectron = isElectron;\r\n}\r\n\r\n// __________ (used to handle stuff like http://goo.gl/xmE5eg) issue #129\r\n// Storage.js\r\n\r\n/**\r\n * Storage is a standalone object used by {@link RecordRTC} to store reusable objects e.g. \"new AudioContext\".\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @example\r\n * Storage.AudioContext === webkitAudioContext\r\n * @property {webkitAudioContext} AudioContext - Keeps a reference to AudioContext object.\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n */\r\n\r\nvar Storage = {};\r\n\r\nif (typeof AudioContext !== 'undefined') {\r\n    Storage.AudioContext = AudioContext;\r\n} else if (typeof webkitAudioContext !== 'undefined') {\r\n    Storage.AudioContext = webkitAudioContext;\r\n}\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.Storage = Storage;\r\n}\n\r\nfunction isMediaRecorderCompatible() {\r\n    if (isFirefox || isSafari || isEdge) {\r\n        return true;\r\n    }\r\n\r\n    var nVer = navigator.appVersion;\r\n    var nAgt = navigator.userAgent;\r\n    var fullVersion = '' + parseFloat(navigator.appVersion);\r\n    var majorVersion = parseInt(navigator.appVersion, 10);\r\n    var nameOffset, verOffset, ix;\r\n\r\n    if (isChrome || isOpera) {\r\n        verOffset = nAgt.indexOf('Chrome');\r\n        fullVersion = nAgt.substring(verOffset + 7);\r\n    }\r\n\r\n    // trim the fullVersion string at semicolon/space if present\r\n    if ((ix = fullVersion.indexOf(';')) !== -1) {\r\n        fullVersion = fullVersion.substring(0, ix);\r\n    }\r\n\r\n    if ((ix = fullVersion.indexOf(' ')) !== -1) {\r\n        fullVersion = fullVersion.substring(0, ix);\r\n    }\r\n\r\n    majorVersion = parseInt('' + fullVersion, 10);\r\n\r\n    if (isNaN(majorVersion)) {\r\n        fullVersion = '' + parseFloat(navigator.appVersion);\r\n        majorVersion = parseInt(navigator.appVersion, 10);\r\n    }\r\n\r\n    return majorVersion >= 49;\r\n}\n\r\n// ______________________\r\n// MediaStreamRecorder.js\r\n\r\n/**\r\n * MediaStreamRecorder is an abstraction layer for {@link https://w3c.github.io/mediacapture-record/MediaRecorder.html|MediaRecorder API}. It is used by {@link RecordRTC} to record MediaStream(s) in both Chrome and Firefox.\r\n * @summary Runs top over {@link https://w3c.github.io/mediacapture-record/MediaRecorder.html|MediaRecorder API}.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://github.com/muaz-khan|Muaz Khan}\r\n * @typedef MediaStreamRecorder\r\n * @class\r\n * @example\r\n * var config = {\r\n *     mimeType: 'video/webm', // vp8, vp9, h264, mkv, opus/vorbis\r\n *     audioBitsPerSecond : 256 * 8 * 1024,\r\n *     videoBitsPerSecond : 256 * 8 * 1024,\r\n *     bitsPerSecond: 256 * 8 * 1024,  // if this is provided, skip above two\r\n *     checkForInactiveTracks: true,\r\n *     timeSlice: 1000, // concatenate intervals based blobs\r\n *     ondataavailable: function() {} // get intervals based blobs\r\n * }\r\n * var recorder = new MediaStreamRecorder(mediaStream, config);\r\n * recorder.record();\r\n * recorder.stop(function(blob) {\r\n *     video.src = URL.createObjectURL(blob);\r\n *\r\n *     // or\r\n *     var blob = recorder.blob;\r\n * });\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.\r\n * @param {object} config - {disableLogs:true, initCallback: function, mimeType: \"video/webm\", timeSlice: 1000}\r\n * @throws Will throw an error if first argument \"MediaStream\" is missing. Also throws error if \"MediaRecorder API\" are not supported by the browser.\r\n */\r\n\r\nfunction MediaStreamRecorder(mediaStream, config) {\r\n    var self = this;\r\n\r\n    if (typeof mediaStream === 'undefined') {\r\n        throw 'First argument \"MediaStream\" is required.';\r\n    }\r\n\r\n    if (typeof MediaRecorder === 'undefined') {\r\n        throw 'Your browser does not support the Media Recorder API. Please try other modules e.g. WhammyRecorder or StereoAudioRecorder.';\r\n    }\r\n\r\n    config = config || {\r\n        // bitsPerSecond: 256 * 8 * 1024,\r\n        mimeType: 'video/webm'\r\n    };\r\n\r\n    if (config.type === 'audio') {\r\n        if (getTracks(mediaStream, 'video').length && getTracks(mediaStream, 'audio').length) {\r\n            var stream;\r\n            if (!!navigator.mozGetUserMedia) {\r\n                stream = new MediaStream();\r\n                stream.addTrack(getTracks(mediaStream, 'audio')[0]);\r\n            } else {\r\n                // webkitMediaStream\r\n                stream = new MediaStream(getTracks(mediaStream, 'audio'));\r\n            }\r\n            mediaStream = stream;\r\n        }\r\n\r\n        if (!config.mimeType || config.mimeType.toString().toLowerCase().indexOf('audio') === -1) {\r\n            config.mimeType = isChrome ? 'audio/webm' : 'audio/ogg';\r\n        }\r\n\r\n        if (config.mimeType && config.mimeType.toString().toLowerCase() !== 'audio/ogg' && !!navigator.mozGetUserMedia) {\r\n            // forcing better codecs on Firefox (via #166)\r\n            config.mimeType = 'audio/ogg';\r\n        }\r\n    }\r\n\r\n    var arrayOfBlobs = [];\r\n\r\n    /**\r\n     * This method returns array of blobs. Use only with \"timeSlice\". Its useful to preview recording anytime, without using the \"stop\" method.\r\n     * @method\r\n     * @memberof MediaStreamRecorder\r\n     * @example\r\n     * var arrayOfBlobs = recorder.getArrayOfBlobs();\r\n     * @returns {Array} Returns array of recorded blobs.\r\n     */\r\n    this.getArrayOfBlobs = function() {\r\n        return arrayOfBlobs;\r\n    };\r\n\r\n    /**\r\n     * This method records MediaStream.\r\n     * @method\r\n     * @memberof MediaStreamRecorder\r\n     * @example\r\n     * recorder.record();\r\n     */\r\n    this.record = function() {\r\n        // set defaults\r\n        self.blob = null;\r\n        self.clearRecordedData();\r\n        self.timestamps = [];\r\n        allStates = [];\r\n        arrayOfBlobs = [];\r\n\r\n        var recorderHints = config;\r\n\r\n        if (!config.disableLogs) {\r\n            console.log('Passing following config over MediaRecorder API.', recorderHints);\r\n        }\r\n\r\n        if (mediaRecorder) {\r\n            // mandatory to make sure Firefox doesn't fails to record streams 3-4 times without reloading the page.\r\n            mediaRecorder = null;\r\n        }\r\n\r\n        if (isChrome && !isMediaRecorderCompatible()) {\r\n            // to support video-only recording on stable\r\n            recorderHints = 'video/vp8';\r\n        }\r\n\r\n        if (typeof MediaRecorder.isTypeSupported === 'function' && recorderHints.mimeType) {\r\n            if (!MediaRecorder.isTypeSupported(recorderHints.mimeType)) {\r\n                if (!config.disableLogs) {\r\n                    console.warn('MediaRecorder API seems unable to record mimeType:', recorderHints.mimeType);\r\n                }\r\n\r\n                recorderHints.mimeType = config.type === 'audio' ? 'audio/webm' : 'video/webm';\r\n            }\r\n        }\r\n\r\n        // using MediaRecorder API here\r\n        try {\r\n            mediaRecorder = new MediaRecorder(mediaStream, recorderHints);\r\n\r\n            // reset\r\n            config.mimeType = recorderHints.mimeType;\r\n        } catch (e) {\r\n            // chrome-based fallback\r\n            mediaRecorder = new MediaRecorder(mediaStream);\r\n        }\r\n\r\n        // old hack?\r\n        if (recorderHints.mimeType && !MediaRecorder.isTypeSupported && 'canRecordMimeType' in mediaRecorder && mediaRecorder.canRecordMimeType(recorderHints.mimeType) === false) {\r\n            if (!config.disableLogs) {\r\n                console.warn('MediaRecorder API seems unable to record mimeType:', recorderHints.mimeType);\r\n            }\r\n        }\r\n\r\n        // Dispatching OnDataAvailable Handler\r\n        mediaRecorder.ondataavailable = function(e) {\r\n            if (e.data) {\r\n                allStates.push('ondataavailable: ' + bytesToSize(e.data.size));\r\n            }\r\n\r\n            if (typeof config.timeSlice === 'number') {\r\n                if (e.data && e.data.size) {\r\n                    arrayOfBlobs.push(e.data);\r\n                    updateTimeStamp();\r\n\r\n                    if (typeof config.ondataavailable === 'function') {\r\n                        // intervals based blobs\r\n                        var blob = config.getNativeBlob ? e.data : new Blob([e.data], {\r\n                            type: getMimeType(recorderHints)\r\n                        });\r\n                        config.ondataavailable(blob);\r\n                    }\r\n                }\r\n                return;\r\n            }\r\n\r\n            if (!e.data || !e.data.size || e.data.size < 100 || self.blob) {\r\n                // make sure that stopRecording always getting fired\r\n                // even if there is invalid data\r\n                if (self.recordingCallback) {\r\n                    self.recordingCallback(new Blob([], {\r\n                        type: getMimeType(recorderHints)\r\n                    }));\r\n                    self.recordingCallback = null;\r\n                }\r\n                return;\r\n            }\r\n\r\n            self.blob = config.getNativeBlob ? e.data : new Blob([e.data], {\r\n                type: getMimeType(recorderHints)\r\n            });\r\n\r\n            if (self.recordingCallback) {\r\n                self.recordingCallback(self.blob);\r\n                self.recordingCallback = null;\r\n            }\r\n        };\r\n\r\n        mediaRecorder.onstart = function() {\r\n            allStates.push('started');\r\n        };\r\n\r\n        mediaRecorder.onpause = function() {\r\n            allStates.push('paused');\r\n        };\r\n\r\n        mediaRecorder.onresume = function() {\r\n            allStates.push('resumed');\r\n        };\r\n\r\n        mediaRecorder.onstop = function() {\r\n            allStates.push('stopped');\r\n        };\r\n\r\n        mediaRecorder.onerror = function(error) {\r\n            if (!error) {\r\n                return;\r\n            }\r\n\r\n            if (!error.name) {\r\n                error.name = 'UnknownError';\r\n            }\r\n\r\n            allStates.push('error: ' + error);\r\n\r\n            if (!config.disableLogs) {\r\n                // via: https://w3c.github.io/mediacapture-record/MediaRecorder.html#exception-summary\r\n                if (error.name.toString().toLowerCase().indexOf('invalidstate') !== -1) {\r\n                    console.error('The MediaRecorder is not in a state in which the proposed operation is allowed to be executed.', error);\r\n                } else if (error.name.toString().toLowerCase().indexOf('notsupported') !== -1) {\r\n                    console.error('MIME type (', recorderHints.mimeType, ') is not supported.', error);\r\n                } else if (error.name.toString().toLowerCase().indexOf('security') !== -1) {\r\n                    console.error('MediaRecorder security error', error);\r\n                }\r\n\r\n                // older code below\r\n                else if (error.name === 'OutOfMemory') {\r\n                    console.error('The UA has exhaused the available memory. User agents SHOULD provide as much additional information as possible in the message attribute.', error);\r\n                } else if (error.name === 'IllegalStreamModification') {\r\n                    console.error('A modification to the stream has occurred that makes it impossible to continue recording. An example would be the addition of a Track while recording is occurring. User agents SHOULD provide as much additional information as possible in the message attribute.', error);\r\n                } else if (error.name === 'OtherRecordingError') {\r\n                    console.error('Used for an fatal error other than those listed above. User agents SHOULD provide as much additional information as possible in the message attribute.', error);\r\n                } else if (error.name === 'GenericError') {\r\n                    console.error('The UA cannot provide the codec or recording option that has been requested.', error);\r\n                } else {\r\n                    console.error('MediaRecorder Error', error);\r\n                }\r\n            }\r\n\r\n            (function(looper) {\r\n                if (!self.manuallyStopped && mediaRecorder && mediaRecorder.state === 'inactive') {\r\n                    delete config.timeslice;\r\n\r\n                    // 10 minutes, enough?\r\n                    mediaRecorder.start(10 * 60 * 1000);\r\n                    return;\r\n                }\r\n\r\n                setTimeout(looper, 1000);\r\n            })();\r\n\r\n            if (mediaRecorder.state !== 'inactive' && mediaRecorder.state !== 'stopped') {\r\n                mediaRecorder.stop();\r\n            }\r\n        };\r\n\r\n        if (typeof config.timeSlice === 'number') {\r\n            updateTimeStamp();\r\n            mediaRecorder.start(config.timeSlice);\r\n        } else {\r\n            // default is 60 minutes; enough?\r\n            // use config => {timeSlice: 1000} otherwise\r\n\r\n            mediaRecorder.start(3.6e+6);\r\n        }\r\n\r\n        if (config.initCallback) {\r\n            config.initCallback(); // old code\r\n        }\r\n    };\r\n\r\n    /**\r\n     * @property {Array} timestamps - Array of time stamps\r\n     * @memberof MediaStreamRecorder\r\n     * @example\r\n     * console.log(recorder.timestamps);\r\n     */\r\n    this.timestamps = [];\r\n\r\n    function updateTimeStamp() {\r\n        self.timestamps.push(new Date().getTime());\r\n\r\n        if (typeof config.onTimeStamp === 'function') {\r\n            config.onTimeStamp(self.timestamps[self.timestamps.length - 1], self.timestamps);\r\n        }\r\n    }\r\n\r\n    function getMimeType(secondObject) {\r\n        if (mediaRecorder && mediaRecorder.mimeType) {\r\n            return mediaRecorder.mimeType;\r\n        }\r\n\r\n        return secondObject.mimeType || 'video/webm';\r\n    }\r\n\r\n    /**\r\n     * This method stops recording MediaStream.\r\n     * @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.\r\n     * @method\r\n     * @memberof MediaStreamRecorder\r\n     * @example\r\n     * recorder.stop(function(blob) {\r\n     *     video.src = URL.createObjectURL(blob);\r\n     * });\r\n     */\r\n    this.stop = function(callback) {\r\n        callback = callback || function() {};\r\n\r\n        self.manuallyStopped = true; // used inside the mediaRecorder.onerror\r\n\r\n        if (!mediaRecorder) {\r\n            return;\r\n        }\r\n\r\n        this.recordingCallback = callback;\r\n\r\n        if (mediaRecorder.state === 'recording') {\r\n            mediaRecorder.stop();\r\n        }\r\n\r\n        if (typeof config.timeSlice === 'number') {\r\n            setTimeout(function() {\r\n                self.blob = new Blob(arrayOfBlobs, {\r\n                    type: getMimeType(config)\r\n                });\r\n\r\n                self.recordingCallback(self.blob);\r\n            }, 100);\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method pauses the recording process.\r\n     * @method\r\n     * @memberof MediaStreamRecorder\r\n     * @example\r\n     * recorder.pause();\r\n     */\r\n    this.pause = function() {\r\n        if (!mediaRecorder) {\r\n            return;\r\n        }\r\n\r\n        if (mediaRecorder.state === 'recording') {\r\n            mediaRecorder.pause();\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method resumes the recording process.\r\n     * @method\r\n     * @memberof MediaStreamRecorder\r\n     * @example\r\n     * recorder.resume();\r\n     */\r\n    this.resume = function() {\r\n        if (!mediaRecorder) {\r\n            return;\r\n        }\r\n\r\n        if (mediaRecorder.state === 'paused') {\r\n            mediaRecorder.resume();\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method resets currently recorded data.\r\n     * @method\r\n     * @memberof MediaStreamRecorder\r\n     * @example\r\n     * recorder.clearRecordedData();\r\n     */\r\n    this.clearRecordedData = function() {\r\n        if (mediaRecorder && mediaRecorder.state === 'recording') {\r\n            self.stop(clearRecordedDataCB);\r\n        }\r\n\r\n        clearRecordedDataCB();\r\n    };\r\n\r\n    function clearRecordedDataCB() {\r\n        arrayOfBlobs = [];\r\n        mediaRecorder = null;\r\n        self.timestamps = [];\r\n    }\r\n\r\n    // Reference to \"MediaRecorder\" object\r\n    var mediaRecorder;\r\n\r\n    /**\r\n     * Access to native MediaRecorder API\r\n     * @method\r\n     * @memberof MediaStreamRecorder\r\n     * @instance\r\n     * @example\r\n     * var internal = recorder.getInternalRecorder();\r\n     * internal.ondataavailable = function() {}; // override\r\n     * internal.stream, internal.onpause, internal.onstop, etc.\r\n     * @returns {Object} Returns internal recording object.\r\n     */\r\n    this.getInternalRecorder = function() {\r\n        return mediaRecorder;\r\n    };\r\n\r\n    function isMediaStreamActive() {\r\n        if ('active' in mediaStream) {\r\n            if (!mediaStream.active) {\r\n                return false;\r\n            }\r\n        } else if ('ended' in mediaStream) { // old hack\r\n            if (mediaStream.ended) {\r\n                return false;\r\n            }\r\n        }\r\n        return true;\r\n    }\r\n\r\n    /**\r\n     * @property {Blob} blob - Recorded data as \"Blob\" object.\r\n     * @memberof MediaStreamRecorder\r\n     * @example\r\n     * recorder.stop(function() {\r\n     *     var blob = recorder.blob;\r\n     * });\r\n     */\r\n    this.blob = null;\r\n\r\n\r\n    /**\r\n     * Get MediaRecorder readonly state.\r\n     * @method\r\n     * @memberof MediaStreamRecorder\r\n     * @example\r\n     * var state = recorder.getState();\r\n     * @returns {String} Returns recording state.\r\n     */\r\n    this.getState = function() {\r\n        if (!mediaRecorder) {\r\n            return 'inactive';\r\n        }\r\n\r\n        return mediaRecorder.state || 'inactive';\r\n    };\r\n\r\n    // list of all recording states\r\n    var allStates = [];\r\n\r\n    /**\r\n     * Get MediaRecorder all recording states.\r\n     * @method\r\n     * @memberof MediaStreamRecorder\r\n     * @example\r\n     * var state = recorder.getAllStates();\r\n     * @returns {Array} Returns all recording states\r\n     */\r\n    this.getAllStates = function() {\r\n        return allStates;\r\n    };\r\n\r\n    // if any Track within the MediaStream is muted or not enabled at any time, \r\n    // the browser will only record black frames \r\n    // or silence since that is the content produced by the Track\r\n    // so we need to stopRecording as soon as any single track ends.\r\n    if (typeof config.checkForInactiveTracks === 'undefined') {\r\n        config.checkForInactiveTracks = false; // disable to minimize CPU usage\r\n    }\r\n\r\n    var self = this;\r\n\r\n    // this method checks if media stream is stopped\r\n    // or if any track is ended.\r\n    (function looper() {\r\n        if (!mediaRecorder || config.checkForInactiveTracks === false) {\r\n            return;\r\n        }\r\n\r\n        if (isMediaStreamActive() === false) {\r\n            if (!config.disableLogs) {\r\n                console.log('MediaStream seems stopped.');\r\n            }\r\n            self.stop();\r\n            return;\r\n        }\r\n\r\n        setTimeout(looper, 1000); // check every second\r\n    })();\r\n\r\n    // for debugging\r\n    this.name = 'MediaStreamRecorder';\r\n    this.toString = function() {\r\n        return this.name;\r\n    };\r\n}\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.MediaStreamRecorder = MediaStreamRecorder;\r\n}\r\n\r\n// source code from: http://typedarray.org/wp-content/projects/WebAudioRecorder/script.js\r\n// https://github.com/mattdiamond/Recorderjs#license-mit\r\n// ______________________\r\n// StereoAudioRecorder.js\r\n\r\n/**\r\n * StereoAudioRecorder is a standalone class used by {@link RecordRTC} to bring \"stereo\" audio-recording in chrome.\r\n * @summary JavaScript standalone object for stereo audio recording.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef StereoAudioRecorder\r\n * @class\r\n * @example\r\n * var recorder = new StereoAudioRecorder(MediaStream, {\r\n *     sampleRate: 44100,\r\n *     bufferSize: 4096\r\n * });\r\n * recorder.record();\r\n * recorder.stop(function(blob) {\r\n *     video.src = URL.createObjectURL(blob);\r\n * });\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.\r\n * @param {object} config - {sampleRate: 44100, bufferSize: 4096, numberOfAudioChannels: 1, etc.}\r\n */\r\n\r\nfunction StereoAudioRecorder(mediaStream, config) {\r\n    if (!getTracks(mediaStream, 'audio').length) {\r\n        throw 'Your stream has no audio tracks.';\r\n    }\r\n\r\n    config = config || {};\r\n\r\n    var self = this;\r\n\r\n    // variables\r\n    var leftchannel = [];\r\n    var rightchannel = [];\r\n    var recording = false;\r\n    var recordingLength = 0;\r\n    var jsAudioNode;\r\n\r\n    var numberOfAudioChannels = 2;\r\n\r\n    /**\r\n     * Set sample rates such as 8K or 16K. Reference: http://stackoverflow.com/a/28977136/552182\r\n     * @property {number} desiredSampRate - Desired Bits per sample * 1000\r\n     * @memberof StereoAudioRecorder\r\n     * @instance\r\n     * @example\r\n     * var recorder = StereoAudioRecorder(mediaStream, {\r\n     *   desiredSampRate: 16 * 1000 // bits-per-sample * 1000\r\n     * });\r\n     */\r\n    var desiredSampRate = config.desiredSampRate;\r\n\r\n    // backward compatibility\r\n    if (config.leftChannel === true) {\r\n        numberOfAudioChannels = 1;\r\n    }\r\n\r\n    if (config.numberOfAudioChannels === 1) {\r\n        numberOfAudioChannels = 1;\r\n    }\r\n\r\n    if (!numberOfAudioChannels || numberOfAudioChannels < 1) {\r\n        numberOfAudioChannels = 2;\r\n    }\r\n\r\n    if (!config.disableLogs) {\r\n        console.log('StereoAudioRecorder is set to record number of channels: ' + numberOfAudioChannels);\r\n    }\r\n\r\n    // if any Track within the MediaStream is muted or not enabled at any time, \r\n    // the browser will only record black frames \r\n    // or silence since that is the content produced by the Track\r\n    // so we need to stopRecording as soon as any single track ends.\r\n    if (typeof config.checkForInactiveTracks === 'undefined') {\r\n        config.checkForInactiveTracks = true;\r\n    }\r\n\r\n    function isMediaStreamActive() {\r\n        if (config.checkForInactiveTracks === false) {\r\n            // always return \"true\"\r\n            return true;\r\n        }\r\n\r\n        if ('active' in mediaStream) {\r\n            if (!mediaStream.active) {\r\n                return false;\r\n            }\r\n        } else if ('ended' in mediaStream) { // old hack\r\n            if (mediaStream.ended) {\r\n                return false;\r\n            }\r\n        }\r\n        return true;\r\n    }\r\n\r\n    /**\r\n     * This method records MediaStream.\r\n     * @method\r\n     * @memberof StereoAudioRecorder\r\n     * @example\r\n     * recorder.record();\r\n     */\r\n    this.record = function() {\r\n        if (isMediaStreamActive() === false) {\r\n            throw 'Please make sure MediaStream is active.';\r\n        }\r\n\r\n        resetVariables();\r\n\r\n        isAudioProcessStarted = isPaused = false;\r\n        recording = true;\r\n\r\n        if (typeof config.timeSlice !== 'undefined') {\r\n            looper();\r\n        }\r\n    };\r\n\r\n    function mergeLeftRightBuffers(config, callback) {\r\n        function mergeAudioBuffers(config, cb) {\r\n            var numberOfAudioChannels = config.numberOfAudioChannels;\r\n\r\n            // todo: \"slice(0)\" --- is it causes loop? Should be removed?\r\n            var leftBuffers = config.leftBuffers.slice(0);\r\n            var rightBuffers = config.rightBuffers.slice(0);\r\n            var sampleRate = config.sampleRate;\r\n            var internalInterleavedLength = config.internalInterleavedLength;\r\n            var desiredSampRate = config.desiredSampRate;\r\n\r\n            if (numberOfAudioChannels === 2) {\r\n                leftBuffers = mergeBuffers(leftBuffers, internalInterleavedLength);\r\n                rightBuffers = mergeBuffers(rightBuffers, internalInterleavedLength);\r\n\r\n                if (desiredSampRate) {\r\n                    leftBuffers = interpolateArray(leftBuffers, desiredSampRate, sampleRate);\r\n                    rightBuffers = interpolateArray(rightBuffers, desiredSampRate, sampleRate);\r\n                }\r\n            }\r\n\r\n            if (numberOfAudioChannels === 1) {\r\n                leftBuffers = mergeBuffers(leftBuffers, internalInterleavedLength);\r\n\r\n                if (desiredSampRate) {\r\n                    leftBuffers = interpolateArray(leftBuffers, desiredSampRate, sampleRate);\r\n                }\r\n            }\r\n\r\n            // set sample rate as desired sample rate\r\n            if (desiredSampRate) {\r\n                sampleRate = desiredSampRate;\r\n            }\r\n\r\n            // for changing the sampling rate, reference:\r\n            // http://stackoverflow.com/a/28977136/552182\r\n            function interpolateArray(data, newSampleRate, oldSampleRate) {\r\n                var fitCount = Math.round(data.length * (newSampleRate / oldSampleRate));\r\n                var newData = [];\r\n                var springFactor = Number((data.length - 1) / (fitCount - 1));\r\n                newData[0] = data[0];\r\n                for (var i = 1; i < fitCount - 1; i++) {\r\n                    var tmp = i * springFactor;\r\n                    var before = Number(Math.floor(tmp)).toFixed();\r\n                    var after = Number(Math.ceil(tmp)).toFixed();\r\n                    var atPoint = tmp - before;\r\n                    newData[i] = linearInterpolate(data[before], data[after], atPoint);\r\n                }\r\n                newData[fitCount - 1] = data[data.length - 1];\r\n                return newData;\r\n            }\r\n\r\n            function linearInterpolate(before, after, atPoint) {\r\n                return before + (after - before) * atPoint;\r\n            }\r\n\r\n            function mergeBuffers(channelBuffer, rLength) {\r\n                var result = new Float64Array(rLength);\r\n                var offset = 0;\r\n                var lng = channelBuffer.length;\r\n\r\n                for (var i = 0; i < lng; i++) {\r\n                    var buffer = channelBuffer[i];\r\n                    result.set(buffer, offset);\r\n                    offset += buffer.length;\r\n                }\r\n\r\n                return result;\r\n            }\r\n\r\n            function interleave(leftChannel, rightChannel) {\r\n                var length = leftChannel.length + rightChannel.length;\r\n\r\n                var result = new Float64Array(length);\r\n\r\n                var inputIndex = 0;\r\n\r\n                for (var index = 0; index < length;) {\r\n                    result[index++] = leftChannel[inputIndex];\r\n                    result[index++] = rightChannel[inputIndex];\r\n                    inputIndex++;\r\n                }\r\n                return result;\r\n            }\r\n\r\n            function writeUTFBytes(view, offset, string) {\r\n                var lng = string.length;\r\n                for (var i = 0; i < lng; i++) {\r\n                    view.setUint8(offset + i, string.charCodeAt(i));\r\n                }\r\n            }\r\n\r\n            // interleave both channels together\r\n            var interleaved;\r\n\r\n            if (numberOfAudioChannels === 2) {\r\n                interleaved = interleave(leftBuffers, rightBuffers);\r\n            }\r\n\r\n            if (numberOfAudioChannels === 1) {\r\n                interleaved = leftBuffers;\r\n            }\r\n\r\n            var interleavedLength = interleaved.length;\r\n\r\n            // create wav file\r\n            var resultingBufferLength = 44 + interleavedLength * 2;\r\n\r\n            var buffer = new ArrayBuffer(resultingBufferLength);\r\n\r\n            var view = new DataView(buffer);\r\n\r\n            // RIFF chunk descriptor/identifier \r\n            writeUTFBytes(view, 0, 'RIFF');\r\n\r\n            // RIFF chunk length\r\n            // changed \"44\" to \"36\" via #401\r\n            view.setUint32(4, 36 + interleavedLength * 2, true);\r\n\r\n            // RIFF type \r\n            writeUTFBytes(view, 8, 'WAVE');\r\n\r\n            // format chunk identifier \r\n            // FMT sub-chunk\r\n            writeUTFBytes(view, 12, 'fmt ');\r\n\r\n            // format chunk length \r\n            view.setUint32(16, 16, true);\r\n\r\n            // sample format (raw)\r\n            view.setUint16(20, 1, true);\r\n\r\n            // stereo (2 channels)\r\n            view.setUint16(22, numberOfAudioChannels, true);\r\n\r\n            // sample rate \r\n            view.setUint32(24, sampleRate, true);\r\n\r\n            // byte rate (sample rate * block align)\r\n            view.setUint32(28, sampleRate * numberOfAudioChannels * 2, true);\r\n\r\n            // block align (channel count * bytes per sample) \r\n            view.setUint16(32, numberOfAudioChannels * 2, true);\r\n\r\n            // bits per sample \r\n            view.setUint16(34, 16, true);\r\n\r\n            // data sub-chunk\r\n            // data chunk identifier \r\n            writeUTFBytes(view, 36, 'data');\r\n\r\n            // data chunk length \r\n            view.setUint32(40, interleavedLength * 2, true);\r\n\r\n            // write the PCM samples\r\n            var lng = interleavedLength;\r\n            var index = 44;\r\n            var volume = 1;\r\n            for (var i = 0; i < lng; i++) {\r\n                view.setInt16(index, interleaved[i] * (0x7FFF * volume), true);\r\n                index += 2;\r\n            }\r\n\r\n            if (cb) {\r\n                return cb({\r\n                    buffer: buffer,\r\n                    view: view\r\n                });\r\n            }\r\n\r\n            postMessage({\r\n                buffer: buffer,\r\n                view: view\r\n            });\r\n        }\r\n\r\n        if (config.noWorker) {\r\n            mergeAudioBuffers(config, function(data) {\r\n                callback(data.buffer, data.view);\r\n            });\r\n            return;\r\n        }\r\n\r\n\r\n        var webWorker = processInWebWorker(mergeAudioBuffers);\r\n\r\n        webWorker.onmessage = function(event) {\r\n            callback(event.data.buffer, event.data.view);\r\n\r\n            // release memory\r\n            URL.revokeObjectURL(webWorker.workerURL);\r\n\r\n            // kill webworker (or Chrome will kill your page after ~25 calls)\r\n            webWorker.terminate();\r\n        };\r\n\r\n        webWorker.postMessage(config);\r\n    }\r\n\r\n    function processInWebWorker(_function) {\r\n        var workerURL = URL.createObjectURL(new Blob([_function.toString(),\r\n            ';this.onmessage =  function (eee) {' + _function.name + '(eee.data);}'\r\n        ], {\r\n            type: 'application/javascript'\r\n        }));\r\n\r\n        var worker = new Worker(workerURL);\r\n        worker.workerURL = workerURL;\r\n        return worker;\r\n    }\r\n\r\n    /**\r\n     * This method stops recording MediaStream.\r\n     * @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.\r\n     * @method\r\n     * @memberof StereoAudioRecorder\r\n     * @example\r\n     * recorder.stop(function(blob) {\r\n     *     video.src = URL.createObjectURL(blob);\r\n     * });\r\n     */\r\n    this.stop = function(callback) {\r\n        callback = callback || function() {};\r\n\r\n        // stop recording\r\n        recording = false;\r\n\r\n        mergeLeftRightBuffers({\r\n            desiredSampRate: desiredSampRate,\r\n            sampleRate: sampleRate,\r\n            numberOfAudioChannels: numberOfAudioChannels,\r\n            internalInterleavedLength: recordingLength,\r\n            leftBuffers: leftchannel,\r\n            rightBuffers: numberOfAudioChannels === 1 ? [] : rightchannel,\r\n            noWorker: config.noWorker\r\n        }, function(buffer, view) {\r\n            /**\r\n             * @property {Blob} blob - The recorded blob object.\r\n             * @memberof StereoAudioRecorder\r\n             * @example\r\n             * recorder.stop(function(){\r\n             *     var blob = recorder.blob;\r\n             * });\r\n             */\r\n            self.blob = new Blob([view], {\r\n                type: 'audio/wav'\r\n            });\r\n\r\n            /**\r\n             * @property {ArrayBuffer} buffer - The recorded buffer object.\r\n             * @memberof StereoAudioRecorder\r\n             * @example\r\n             * recorder.stop(function(){\r\n             *     var buffer = recorder.buffer;\r\n             * });\r\n             */\r\n            self.buffer = new ArrayBuffer(view.buffer.byteLength);\r\n\r\n            /**\r\n             * @property {DataView} view - The recorded data-view object.\r\n             * @memberof StereoAudioRecorder\r\n             * @example\r\n             * recorder.stop(function(){\r\n             *     var view = recorder.view;\r\n             * });\r\n             */\r\n            self.view = view;\r\n\r\n            self.sampleRate = desiredSampRate || sampleRate;\r\n            self.bufferSize = bufferSize;\r\n\r\n            // recorded audio length\r\n            self.length = recordingLength;\r\n\r\n            isAudioProcessStarted = false;\r\n\r\n            if (callback) {\r\n                callback(self.blob);\r\n            }\r\n        });\r\n    };\r\n\r\n    if (typeof RecordRTC.Storage === 'undefined') {\r\n        RecordRTC.Storage = {\r\n            AudioContextConstructor: null,\r\n            AudioContext: window.AudioContext || window.webkitAudioContext\r\n        };\r\n    }\r\n\r\n    if (!RecordRTC.Storage.AudioContextConstructor || RecordRTC.Storage.AudioContextConstructor.state === 'closed') {\r\n        RecordRTC.Storage.AudioContextConstructor = new RecordRTC.Storage.AudioContext();\r\n    }\r\n\r\n    var context = RecordRTC.Storage.AudioContextConstructor;\r\n\r\n    // creates an audio node from the microphone incoming stream\r\n    var audioInput = context.createMediaStreamSource(mediaStream);\r\n\r\n    var legalBufferValues = [0, 256, 512, 1024, 2048, 4096, 8192, 16384];\r\n\r\n    /**\r\n     * From the spec: This value controls how frequently the audioprocess event is\r\n     * dispatched and how many sample-frames need to be processed each call.\r\n     * Lower values for buffer size will result in a lower (better) latency.\r\n     * Higher values will be necessary to avoid audio breakup and glitches\r\n     * The size of the buffer (in sample-frames) which needs to\r\n     * be processed each time onprocessaudio is called.\r\n     * Legal values are (256, 512, 1024, 2048, 4096, 8192, 16384).\r\n     * @property {number} bufferSize - Buffer-size for how frequently the audioprocess event is dispatched.\r\n     * @memberof StereoAudioRecorder\r\n     * @example\r\n     * recorder = new StereoAudioRecorder(mediaStream, {\r\n     *     bufferSize: 4096\r\n     * });\r\n     */\r\n\r\n    // \"0\" means, let chrome decide the most accurate buffer-size for current platform.\r\n    var bufferSize = typeof config.bufferSize === 'undefined' ? 4096 : config.bufferSize;\r\n\r\n    if (legalBufferValues.indexOf(bufferSize) === -1) {\r\n        if (!config.disableLogs) {\r\n            console.log('Legal values for buffer-size are ' + JSON.stringify(legalBufferValues, null, '\\t'));\r\n        }\r\n    }\r\n\r\n    if (context.createJavaScriptNode) {\r\n        jsAudioNode = context.createJavaScriptNode(bufferSize, numberOfAudioChannels, numberOfAudioChannels);\r\n    } else if (context.createScriptProcessor) {\r\n        jsAudioNode = context.createScriptProcessor(bufferSize, numberOfAudioChannels, numberOfAudioChannels);\r\n    } else {\r\n        throw 'WebAudio API has no support on this browser.';\r\n    }\r\n\r\n    // connect the stream to the script processor\r\n    audioInput.connect(jsAudioNode);\r\n\r\n    if (!config.bufferSize) {\r\n        bufferSize = jsAudioNode.bufferSize; // device buffer-size\r\n    }\r\n\r\n    /**\r\n     * The sample rate (in sample-frames per second) at which the\r\n     * AudioContext handles audio. It is assumed that all AudioNodes\r\n     * in the context run at this rate. In making this assumption,\r\n     * sample-rate converters or \"varispeed\" processors are not supported\r\n     * in real-time processing.\r\n     * The sampleRate parameter describes the sample-rate of the\r\n     * linear PCM audio data in the buffer in sample-frames per second.\r\n     * An implementation must support sample-rates in at least\r\n     * the range 22050 to 96000.\r\n     * @property {number} sampleRate - Buffer-size for how frequently the audioprocess event is dispatched.\r\n     * @memberof StereoAudioRecorder\r\n     * @example\r\n     * recorder = new StereoAudioRecorder(mediaStream, {\r\n     *     sampleRate: 44100\r\n     * });\r\n     */\r\n    var sampleRate = typeof config.sampleRate !== 'undefined' ? config.sampleRate : context.sampleRate || 44100;\r\n\r\n    if (sampleRate < 22050 || sampleRate > 96000) {\r\n        // Ref: http://stackoverflow.com/a/26303918/552182\r\n        if (!config.disableLogs) {\r\n            console.log('sample-rate must be under range 22050 and 96000.');\r\n        }\r\n    }\r\n\r\n    if (!config.disableLogs) {\r\n        if (config.desiredSampRate) {\r\n            console.log('Desired sample-rate: ' + config.desiredSampRate);\r\n        }\r\n    }\r\n\r\n    var isPaused = false;\r\n    /**\r\n     * This method pauses the recording process.\r\n     * @method\r\n     * @memberof StereoAudioRecorder\r\n     * @example\r\n     * recorder.pause();\r\n     */\r\n    this.pause = function() {\r\n        isPaused = true;\r\n    };\r\n\r\n    /**\r\n     * This method resumes the recording process.\r\n     * @method\r\n     * @memberof StereoAudioRecorder\r\n     * @example\r\n     * recorder.resume();\r\n     */\r\n    this.resume = function() {\r\n        if (isMediaStreamActive() === false) {\r\n            throw 'Please make sure MediaStream is active.';\r\n        }\r\n\r\n        if (!recording) {\r\n            if (!config.disableLogs) {\r\n                console.log('Seems recording has been restarted.');\r\n            }\r\n            this.record();\r\n            return;\r\n        }\r\n\r\n        isPaused = false;\r\n    };\r\n\r\n    /**\r\n     * This method resets currently recorded data.\r\n     * @method\r\n     * @memberof StereoAudioRecorder\r\n     * @example\r\n     * recorder.clearRecordedData();\r\n     */\r\n    this.clearRecordedData = function() {\r\n        config.checkForInactiveTracks = false;\r\n\r\n        if (recording) {\r\n            this.stop(clearRecordedDataCB);\r\n        }\r\n\r\n        clearRecordedDataCB();\r\n    };\r\n\r\n    function resetVariables() {\r\n        leftchannel = [];\r\n        rightchannel = [];\r\n        recordingLength = 0;\r\n        isAudioProcessStarted = false;\r\n        recording = false;\r\n        isPaused = false;\r\n        context = null;\r\n\r\n        self.leftchannel = leftchannel;\r\n        self.rightchannel = rightchannel;\r\n        self.numberOfAudioChannels = numberOfAudioChannels;\r\n        self.desiredSampRate = desiredSampRate;\r\n        self.sampleRate = sampleRate;\r\n        self.recordingLength = recordingLength;\r\n\r\n        intervalsBasedBuffers = {\r\n            left: [],\r\n            right: [],\r\n            recordingLength: 0\r\n        };\r\n    }\r\n\r\n    function clearRecordedDataCB() {\r\n        if (jsAudioNode) {\r\n            jsAudioNode.onaudioprocess = null;\r\n            jsAudioNode.disconnect();\r\n            jsAudioNode = null;\r\n        }\r\n\r\n        if (audioInput) {\r\n            audioInput.disconnect();\r\n            audioInput = null;\r\n        }\r\n\r\n        resetVariables();\r\n    }\r\n\r\n    // for debugging\r\n    this.name = 'StereoAudioRecorder';\r\n    this.toString = function() {\r\n        return this.name;\r\n    };\r\n\r\n    var isAudioProcessStarted = false;\r\n\r\n    function onAudioProcessDataAvailable(e) {\r\n        if (isPaused) {\r\n            return;\r\n        }\r\n\r\n        if (isMediaStreamActive() === false) {\r\n            if (!config.disableLogs) {\r\n                console.log('MediaStream seems stopped.');\r\n            }\r\n            jsAudioNode.disconnect();\r\n            recording = false;\r\n        }\r\n\r\n        if (!recording) {\r\n            if (audioInput) {\r\n                audioInput.disconnect();\r\n                audioInput = null;\r\n            }\r\n            return;\r\n        }\r\n\r\n        /**\r\n         * This method is called on \"onaudioprocess\" event's first invocation.\r\n         * @method {function} onAudioProcessStarted\r\n         * @memberof StereoAudioRecorder\r\n         * @example\r\n         * recorder.onAudioProcessStarted: function() { };\r\n         */\r\n        if (!isAudioProcessStarted) {\r\n            isAudioProcessStarted = true;\r\n            if (config.onAudioProcessStarted) {\r\n                config.onAudioProcessStarted();\r\n            }\r\n\r\n            if (config.initCallback) {\r\n                config.initCallback();\r\n            }\r\n        }\r\n\r\n        var left = e.inputBuffer.getChannelData(0);\r\n\r\n        // we clone the samples\r\n        var chLeft = new Float32Array(left);\r\n        leftchannel.push(chLeft);\r\n\r\n        if (numberOfAudioChannels === 2) {\r\n            var right = e.inputBuffer.getChannelData(1);\r\n            var chRight = new Float32Array(right);\r\n            rightchannel.push(chRight);\r\n        }\r\n\r\n        recordingLength += bufferSize;\r\n\r\n        // export raw PCM\r\n        self.recordingLength = recordingLength;\r\n\r\n        if (typeof config.timeSlice !== 'undefined') {\r\n            intervalsBasedBuffers.recordingLength += bufferSize;\r\n            intervalsBasedBuffers.left.push(chLeft);\r\n\r\n            if (numberOfAudioChannels === 2) {\r\n                intervalsBasedBuffers.right.push(chRight);\r\n            }\r\n        }\r\n    }\r\n\r\n    jsAudioNode.onaudioprocess = onAudioProcessDataAvailable;\r\n\r\n    // to prevent self audio to be connected with speakers\r\n    if (context.createMediaStreamDestination) {\r\n        jsAudioNode.connect(context.createMediaStreamDestination());\r\n    } else {\r\n        jsAudioNode.connect(context.destination);\r\n    }\r\n\r\n    // export raw PCM\r\n    this.leftchannel = leftchannel;\r\n    this.rightchannel = rightchannel;\r\n    this.numberOfAudioChannels = numberOfAudioChannels;\r\n    this.desiredSampRate = desiredSampRate;\r\n    this.sampleRate = sampleRate;\r\n    self.recordingLength = recordingLength;\r\n\r\n    // helper for intervals based blobs\r\n    var intervalsBasedBuffers = {\r\n        left: [],\r\n        right: [],\r\n        recordingLength: 0\r\n    };\r\n\r\n    // this looper is used to support intervals based blobs (via timeSlice+ondataavailable)\r\n    function looper() {\r\n        if (!recording || typeof config.ondataavailable !== 'function' || typeof config.timeSlice === 'undefined') {\r\n            return;\r\n        }\r\n\r\n        if (intervalsBasedBuffers.left.length) {\r\n            mergeLeftRightBuffers({\r\n                desiredSampRate: desiredSampRate,\r\n                sampleRate: sampleRate,\r\n                numberOfAudioChannels: numberOfAudioChannels,\r\n                internalInterleavedLength: intervalsBasedBuffers.recordingLength,\r\n                leftBuffers: intervalsBasedBuffers.left,\r\n                rightBuffers: numberOfAudioChannels === 1 ? [] : intervalsBasedBuffers.right\r\n            }, function(buffer, view) {\r\n                var blob = new Blob([view], {\r\n                    type: 'audio/wav'\r\n                });\r\n                config.ondataavailable(blob);\r\n\r\n                setTimeout(looper, config.timeSlice);\r\n            });\r\n\r\n            intervalsBasedBuffers = {\r\n                left: [],\r\n                right: [],\r\n                recordingLength: 0\r\n            };\r\n        } else {\r\n            setTimeout(looper, config.timeSlice);\r\n        }\r\n    }\r\n}\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.StereoAudioRecorder = StereoAudioRecorder;\r\n}\r\n\r\n// _________________\r\n// CanvasRecorder.js\r\n\r\n/**\r\n * CanvasRecorder is a standalone class used by {@link RecordRTC} to bring HTML5-Canvas recording into video WebM. It uses HTML2Canvas library and runs top over {@link Whammy}.\r\n * @summary HTML2Canvas recording into video WebM.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef CanvasRecorder\r\n * @class\r\n * @example\r\n * var recorder = new CanvasRecorder(htmlElement, { disableLogs: true, useWhammyRecorder: true });\r\n * recorder.record();\r\n * recorder.stop(function(blob) {\r\n *     video.src = URL.createObjectURL(blob);\r\n * });\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {HTMLElement} htmlElement - querySelector/getElementById/getElementsByTagName[0]/etc.\r\n * @param {object} config - {disableLogs:true, initCallback: function}\r\n */\r\n\r\nfunction CanvasRecorder(htmlElement, config) {\r\n    if (typeof html2canvas === 'undefined') {\r\n        throw 'Please link: https://www.webrtc-experiment.com/screenshot.js';\r\n    }\r\n\r\n    config = config || {};\r\n    if (!config.frameInterval) {\r\n        config.frameInterval = 10;\r\n    }\r\n\r\n    // via DetectRTC.js\r\n    var isCanvasSupportsStreamCapturing = false;\r\n    ['captureStream', 'mozCaptureStream', 'webkitCaptureStream'].forEach(function(item) {\r\n        if (item in document.createElement('canvas')) {\r\n            isCanvasSupportsStreamCapturing = true;\r\n        }\r\n    });\r\n\r\n    var _isChrome = (!!window.webkitRTCPeerConnection || !!window.webkitGetUserMedia) && !!window.chrome;\r\n\r\n    var chromeVersion = 50;\r\n    var matchArray = navigator.userAgent.match(/Chrom(e|ium)\\/([0-9]+)\\./);\r\n    if (_isChrome && matchArray && matchArray[2]) {\r\n        chromeVersion = parseInt(matchArray[2], 10);\r\n    }\r\n\r\n    if (_isChrome && chromeVersion < 52) {\r\n        isCanvasSupportsStreamCapturing = false;\r\n    }\r\n\r\n    if (config.useWhammyRecorder) {\r\n        isCanvasSupportsStreamCapturing = false;\r\n    }\r\n\r\n    var globalCanvas, mediaStreamRecorder;\r\n\r\n    if (isCanvasSupportsStreamCapturing) {\r\n        if (!config.disableLogs) {\r\n            console.log('Your browser supports both MediRecorder API and canvas.captureStream!');\r\n        }\r\n\r\n        if (htmlElement instanceof HTMLCanvasElement) {\r\n            globalCanvas = htmlElement;\r\n        } else if (htmlElement instanceof CanvasRenderingContext2D) {\r\n            globalCanvas = htmlElement.canvas;\r\n        } else {\r\n            throw 'Please pass either HTMLCanvasElement or CanvasRenderingContext2D.';\r\n        }\r\n    } else if (!!navigator.mozGetUserMedia) {\r\n        if (!config.disableLogs) {\r\n            console.error('Canvas recording is NOT supported in Firefox.');\r\n        }\r\n    }\r\n\r\n    var isRecording;\r\n\r\n    /**\r\n     * This method records Canvas.\r\n     * @method\r\n     * @memberof CanvasRecorder\r\n     * @example\r\n     * recorder.record();\r\n     */\r\n    this.record = function() {\r\n        isRecording = true;\r\n\r\n        if (isCanvasSupportsStreamCapturing && !config.useWhammyRecorder) {\r\n            // CanvasCaptureMediaStream\r\n            var canvasMediaStream;\r\n            if ('captureStream' in globalCanvas) {\r\n                canvasMediaStream = globalCanvas.captureStream(25); // 25 FPS\r\n            } else if ('mozCaptureStream' in globalCanvas) {\r\n                canvasMediaStream = globalCanvas.mozCaptureStream(25);\r\n            } else if ('webkitCaptureStream' in globalCanvas) {\r\n                canvasMediaStream = globalCanvas.webkitCaptureStream(25);\r\n            }\r\n\r\n            try {\r\n                var mdStream = new MediaStream();\r\n                mdStream.addTrack(getTracks(canvasMediaStream, 'video')[0]);\r\n                canvasMediaStream = mdStream;\r\n            } catch (e) {}\r\n\r\n            if (!canvasMediaStream) {\r\n                throw 'captureStream API are NOT available.';\r\n            }\r\n\r\n            // Note: Jan 18, 2016 status is that, \r\n            // Firefox MediaRecorder API can't record CanvasCaptureMediaStream object.\r\n            mediaStreamRecorder = new MediaStreamRecorder(canvasMediaStream, {\r\n                mimeType: config.mimeType || 'video/webm'\r\n            });\r\n            mediaStreamRecorder.record();\r\n        } else {\r\n            whammy.frames = [];\r\n            lastTime = new Date().getTime();\r\n            drawCanvasFrame();\r\n        }\r\n\r\n        if (config.initCallback) {\r\n            config.initCallback();\r\n        }\r\n    };\r\n\r\n    this.getWebPImages = function(callback) {\r\n        if (htmlElement.nodeName.toLowerCase() !== 'canvas') {\r\n            callback();\r\n            return;\r\n        }\r\n\r\n        var framesLength = whammy.frames.length;\r\n        whammy.frames.forEach(function(frame, idx) {\r\n            var framesRemaining = framesLength - idx;\r\n            if (!config.disableLogs) {\r\n                console.log(framesRemaining + '/' + framesLength + ' frames remaining');\r\n            }\r\n\r\n            if (config.onEncodingCallback) {\r\n                config.onEncodingCallback(framesRemaining, framesLength);\r\n            }\r\n\r\n            var webp = frame.image.toDataURL('image/webp', 1);\r\n            whammy.frames[idx].image = webp;\r\n        });\r\n\r\n        if (!config.disableLogs) {\r\n            console.log('Generating WebM');\r\n        }\r\n\r\n        callback();\r\n    };\r\n\r\n    /**\r\n     * This method stops recording Canvas.\r\n     * @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.\r\n     * @method\r\n     * @memberof CanvasRecorder\r\n     * @example\r\n     * recorder.stop(function(blob) {\r\n     *     video.src = URL.createObjectURL(blob);\r\n     * });\r\n     */\r\n    this.stop = function(callback) {\r\n        isRecording = false;\r\n\r\n        var that = this;\r\n\r\n        if (isCanvasSupportsStreamCapturing && mediaStreamRecorder) {\r\n            mediaStreamRecorder.stop(callback);\r\n            return;\r\n        }\r\n\r\n        this.getWebPImages(function() {\r\n            /**\r\n             * @property {Blob} blob - Recorded frames in video/webm blob.\r\n             * @memberof CanvasRecorder\r\n             * @example\r\n             * recorder.stop(function() {\r\n             *     var blob = recorder.blob;\r\n             * });\r\n             */\r\n            whammy.compile(function(blob) {\r\n                if (!config.disableLogs) {\r\n                    console.log('Recording finished!');\r\n                }\r\n\r\n                that.blob = blob;\r\n\r\n                if (that.blob.forEach) {\r\n                    that.blob = new Blob([], {\r\n                        type: 'video/webm'\r\n                    });\r\n                }\r\n\r\n                if (callback) {\r\n                    callback(that.blob);\r\n                }\r\n\r\n                whammy.frames = [];\r\n            });\r\n        });\r\n    };\r\n\r\n    var isPausedRecording = false;\r\n\r\n    /**\r\n     * This method pauses the recording process.\r\n     * @method\r\n     * @memberof CanvasRecorder\r\n     * @example\r\n     * recorder.pause();\r\n     */\r\n    this.pause = function() {\r\n        isPausedRecording = true;\r\n\r\n        if (mediaStreamRecorder instanceof MediaStreamRecorder) {\r\n            mediaStreamRecorder.pause();\r\n            return;\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method resumes the recording process.\r\n     * @method\r\n     * @memberof CanvasRecorder\r\n     * @example\r\n     * recorder.resume();\r\n     */\r\n    this.resume = function() {\r\n        isPausedRecording = false;\r\n\r\n        if (mediaStreamRecorder instanceof MediaStreamRecorder) {\r\n            mediaStreamRecorder.resume();\r\n            return;\r\n        }\r\n\r\n        if (!isRecording) {\r\n            this.record();\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method resets currently recorded data.\r\n     * @method\r\n     * @memberof CanvasRecorder\r\n     * @example\r\n     * recorder.clearRecordedData();\r\n     */\r\n    this.clearRecordedData = function() {\r\n        if (isRecording) {\r\n            this.stop(clearRecordedDataCB);\r\n        }\r\n        clearRecordedDataCB();\r\n    };\r\n\r\n    function clearRecordedDataCB() {\r\n        whammy.frames = [];\r\n        isRecording = false;\r\n        isPausedRecording = false;\r\n    }\r\n\r\n    // for debugging\r\n    this.name = 'CanvasRecorder';\r\n    this.toString = function() {\r\n        return this.name;\r\n    };\r\n\r\n    function cloneCanvas() {\r\n        //create a new canvas\r\n        var newCanvas = document.createElement('canvas');\r\n        var context = newCanvas.getContext('2d');\r\n\r\n        //set dimensions\r\n        newCanvas.width = htmlElement.width;\r\n        newCanvas.height = htmlElement.height;\r\n\r\n        //apply the old canvas to the new one\r\n        context.drawImage(htmlElement, 0, 0);\r\n\r\n        //return the new canvas\r\n        return newCanvas;\r\n    }\r\n\r\n    function drawCanvasFrame() {\r\n        if (isPausedRecording) {\r\n            lastTime = new Date().getTime();\r\n            return setTimeout(drawCanvasFrame, 500);\r\n        }\r\n\r\n        if (htmlElement.nodeName.toLowerCase() === 'canvas') {\r\n            var duration = new Date().getTime() - lastTime;\r\n            // via #206, by Jack i.e. @Seymourr\r\n            lastTime = new Date().getTime();\r\n\r\n            whammy.frames.push({\r\n                image: cloneCanvas(),\r\n                duration: duration\r\n            });\r\n\r\n            if (isRecording) {\r\n                setTimeout(drawCanvasFrame, config.frameInterval);\r\n            }\r\n            return;\r\n        }\r\n\r\n        html2canvas(htmlElement, {\r\n            grabMouse: typeof config.showMousePointer === 'undefined' || config.showMousePointer,\r\n            onrendered: function(canvas) {\r\n                var duration = new Date().getTime() - lastTime;\r\n                if (!duration) {\r\n                    return setTimeout(drawCanvasFrame, config.frameInterval);\r\n                }\r\n\r\n                // via #206, by Jack i.e. @Seymourr\r\n                lastTime = new Date().getTime();\r\n\r\n                whammy.frames.push({\r\n                    image: canvas.toDataURL('image/webp', 1),\r\n                    duration: duration\r\n                });\r\n\r\n                if (isRecording) {\r\n                    setTimeout(drawCanvasFrame, config.frameInterval);\r\n                }\r\n            }\r\n        });\r\n    }\r\n\r\n    var lastTime = new Date().getTime();\r\n\r\n    var whammy = new Whammy.Video(100);\r\n}\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.CanvasRecorder = CanvasRecorder;\r\n}\n\r\n// _________________\r\n// WhammyRecorder.js\r\n\r\n/**\r\n * WhammyRecorder is a standalone class used by {@link RecordRTC} to bring video recording in Chrome. It runs top over {@link Whammy}.\r\n * @summary Video recording feature in Chrome.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef WhammyRecorder\r\n * @class\r\n * @example\r\n * var recorder = new WhammyRecorder(mediaStream);\r\n * recorder.record();\r\n * recorder.stop(function(blob) {\r\n *     video.src = URL.createObjectURL(blob);\r\n * });\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.\r\n * @param {object} config - {disableLogs: true, initCallback: function, video: HTMLVideoElement, etc.}\r\n */\r\n\r\nfunction WhammyRecorder(mediaStream, config) {\r\n\r\n    config = config || {};\r\n\r\n    if (!config.frameInterval) {\r\n        config.frameInterval = 10;\r\n    }\r\n\r\n    if (!config.disableLogs) {\r\n        console.log('Using frames-interval:', config.frameInterval);\r\n    }\r\n\r\n    /**\r\n     * This method records video.\r\n     * @method\r\n     * @memberof WhammyRecorder\r\n     * @example\r\n     * recorder.record();\r\n     */\r\n    this.record = function() {\r\n        if (!config.width) {\r\n            config.width = 320;\r\n        }\r\n\r\n        if (!config.height) {\r\n            config.height = 240;\r\n        }\r\n\r\n        if (!config.video) {\r\n            config.video = {\r\n                width: config.width,\r\n                height: config.height\r\n            };\r\n        }\r\n\r\n        if (!config.canvas) {\r\n            config.canvas = {\r\n                width: config.width,\r\n                height: config.height\r\n            };\r\n        }\r\n\r\n        canvas.width = config.canvas.width || 320;\r\n        canvas.height = config.canvas.height || 240;\r\n\r\n        context = canvas.getContext('2d');\r\n\r\n        // setting defaults\r\n        if (config.video && config.video instanceof HTMLVideoElement) {\r\n            video = config.video.cloneNode();\r\n\r\n            if (config.initCallback) {\r\n                config.initCallback();\r\n            }\r\n        } else {\r\n            video = document.createElement('video');\r\n\r\n            setSrcObject(mediaStream, video);\r\n\r\n            video.onloadedmetadata = function() { // \"onloadedmetadata\" may NOT work in FF?\r\n                if (config.initCallback) {\r\n                    config.initCallback();\r\n                }\r\n            };\r\n\r\n            video.width = config.video.width;\r\n            video.height = config.video.height;\r\n        }\r\n\r\n        video.muted = true;\r\n        video.play();\r\n\r\n        lastTime = new Date().getTime();\r\n        whammy = new Whammy.Video();\r\n\r\n        if (!config.disableLogs) {\r\n            console.log('canvas resolutions', canvas.width, '*', canvas.height);\r\n            console.log('video width/height', video.width || canvas.width, '*', video.height || canvas.height);\r\n        }\r\n\r\n        drawFrames(config.frameInterval);\r\n    };\r\n\r\n    /**\r\n     * Draw and push frames to Whammy\r\n     * @param {integer} frameInterval - set minimum interval (in milliseconds) between each time we push a frame to Whammy\r\n     */\r\n    function drawFrames(frameInterval) {\r\n        frameInterval = typeof frameInterval !== 'undefined' ? frameInterval : 10;\r\n\r\n        var duration = new Date().getTime() - lastTime;\r\n        if (!duration) {\r\n            return setTimeout(drawFrames, frameInterval, frameInterval);\r\n        }\r\n\r\n        if (isPausedRecording) {\r\n            lastTime = new Date().getTime();\r\n            return setTimeout(drawFrames, 100);\r\n        }\r\n\r\n        // via #206, by Jack i.e. @Seymourr\r\n        lastTime = new Date().getTime();\r\n\r\n        if (video.paused) {\r\n            // via: https://github.com/muaz-khan/WebRTC-Experiment/pull/316\r\n            // Tweak for Android Chrome\r\n            video.play();\r\n        }\r\n\r\n        context.drawImage(video, 0, 0, canvas.width, canvas.height);\r\n        whammy.frames.push({\r\n            duration: duration,\r\n            image: canvas.toDataURL('image/webp')\r\n        });\r\n\r\n        if (!isStopDrawing) {\r\n            setTimeout(drawFrames, frameInterval, frameInterval);\r\n        }\r\n    }\r\n\r\n    function asyncLoop(o) {\r\n        var i = -1,\r\n            length = o.length;\r\n\r\n        (function loop() {\r\n            i++;\r\n            if (i === length) {\r\n                o.callback();\r\n                return;\r\n            }\r\n\r\n            // \"setTimeout\" added by Jim McLeod\r\n            setTimeout(function() {\r\n                o.functionToLoop(loop, i);\r\n            }, 1);\r\n        })();\r\n    }\r\n\r\n\r\n    /**\r\n     * remove black frames from the beginning to the specified frame\r\n     * @param {Array} _frames - array of frames to be checked\r\n     * @param {number} _framesToCheck - number of frame until check will be executed (-1 - will drop all frames until frame not matched will be found)\r\n     * @param {number} _pixTolerance - 0 - very strict (only black pixel color) ; 1 - all\r\n     * @param {number} _frameTolerance - 0 - very strict (only black frame color) ; 1 - all\r\n     * @returns {Array} - array of frames\r\n     */\r\n    // pull#293 by @volodalexey\r\n    function dropBlackFrames(_frames, _framesToCheck, _pixTolerance, _frameTolerance, callback) {\r\n        var localCanvas = document.createElement('canvas');\r\n        localCanvas.width = canvas.width;\r\n        localCanvas.height = canvas.height;\r\n        var context2d = localCanvas.getContext('2d');\r\n        var resultFrames = [];\r\n\r\n        var checkUntilNotBlack = _framesToCheck === -1;\r\n        var endCheckFrame = (_framesToCheck && _framesToCheck > 0 && _framesToCheck <= _frames.length) ?\r\n            _framesToCheck : _frames.length;\r\n        var sampleColor = {\r\n            r: 0,\r\n            g: 0,\r\n            b: 0\r\n        };\r\n        var maxColorDifference = Math.sqrt(\r\n            Math.pow(255, 2) +\r\n            Math.pow(255, 2) +\r\n            Math.pow(255, 2)\r\n        );\r\n        var pixTolerance = _pixTolerance && _pixTolerance >= 0 && _pixTolerance <= 1 ? _pixTolerance : 0;\r\n        var frameTolerance = _frameTolerance && _frameTolerance >= 0 && _frameTolerance <= 1 ? _frameTolerance : 0;\r\n        var doNotCheckNext = false;\r\n\r\n        asyncLoop({\r\n            length: endCheckFrame,\r\n            functionToLoop: function(loop, f) {\r\n                var matchPixCount, endPixCheck, maxPixCount;\r\n\r\n                var finishImage = function() {\r\n                    if (!doNotCheckNext && maxPixCount - matchPixCount <= maxPixCount * frameTolerance) {\r\n                        // console.log('removed black frame : ' + f + ' ; frame duration ' + _frames[f].duration);\r\n                    } else {\r\n                        // console.log('frame is passed : ' + f);\r\n                        if (checkUntilNotBlack) {\r\n                            doNotCheckNext = true;\r\n                        }\r\n                        resultFrames.push(_frames[f]);\r\n                    }\r\n                    loop();\r\n                };\r\n\r\n                if (!doNotCheckNext) {\r\n                    var image = new Image();\r\n                    image.onload = function() {\r\n                        context2d.drawImage(image, 0, 0, canvas.width, canvas.height);\r\n                        var imageData = context2d.getImageData(0, 0, canvas.width, canvas.height);\r\n                        matchPixCount = 0;\r\n                        endPixCheck = imageData.data.length;\r\n                        maxPixCount = imageData.data.length / 4;\r\n\r\n                        for (var pix = 0; pix < endPixCheck; pix += 4) {\r\n                            var currentColor = {\r\n                                r: imageData.data[pix],\r\n                                g: imageData.data[pix + 1],\r\n                                b: imageData.data[pix + 2]\r\n                            };\r\n                            var colorDifference = Math.sqrt(\r\n                                Math.pow(currentColor.r - sampleColor.r, 2) +\r\n                                Math.pow(currentColor.g - sampleColor.g, 2) +\r\n                                Math.pow(currentColor.b - sampleColor.b, 2)\r\n                            );\r\n                            // difference in color it is difference in color vectors (r1,g1,b1) <=> (r2,g2,b2)\r\n                            if (colorDifference <= maxColorDifference * pixTolerance) {\r\n                                matchPixCount++;\r\n                            }\r\n                        }\r\n                        finishImage();\r\n                    };\r\n                    image.src = _frames[f].image;\r\n                } else {\r\n                    finishImage();\r\n                }\r\n            },\r\n            callback: function() {\r\n                resultFrames = resultFrames.concat(_frames.slice(endCheckFrame));\r\n\r\n                if (resultFrames.length <= 0) {\r\n                    // at least one last frame should be available for next manipulation\r\n                    // if total duration of all frames will be < 1000 than ffmpeg doesn't work well...\r\n                    resultFrames.push(_frames[_frames.length - 1]);\r\n                }\r\n                callback(resultFrames);\r\n            }\r\n        });\r\n    }\r\n\r\n    var isStopDrawing = false;\r\n\r\n    /**\r\n     * This method stops recording video.\r\n     * @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.\r\n     * @method\r\n     * @memberof WhammyRecorder\r\n     * @example\r\n     * recorder.stop(function(blob) {\r\n     *     video.src = URL.createObjectURL(blob);\r\n     * });\r\n     */\r\n    this.stop = function(callback) {\r\n        callback = callback || function() {};\r\n\r\n        isStopDrawing = true;\r\n\r\n        var _this = this;\r\n        // analyse of all frames takes some time!\r\n        setTimeout(function() {\r\n            // e.g. dropBlackFrames(frames, 10, 1, 1) - will cut all 10 frames\r\n            // e.g. dropBlackFrames(frames, 10, 0.5, 0.5) - will analyse 10 frames\r\n            // e.g. dropBlackFrames(frames, 10) === dropBlackFrames(frames, 10, 0, 0) - will analyse 10 frames with strict black color\r\n            dropBlackFrames(whammy.frames, -1, null, null, function(frames) {\r\n                whammy.frames = frames;\r\n\r\n                // to display advertisement images!\r\n                if (config.advertisement && config.advertisement.length) {\r\n                    whammy.frames = config.advertisement.concat(whammy.frames);\r\n                }\r\n\r\n                /**\r\n                 * @property {Blob} blob - Recorded frames in video/webm blob.\r\n                 * @memberof WhammyRecorder\r\n                 * @example\r\n                 * recorder.stop(function() {\r\n                 *     var blob = recorder.blob;\r\n                 * });\r\n                 */\r\n                whammy.compile(function(blob) {\r\n                    _this.blob = blob;\r\n\r\n                    if (_this.blob.forEach) {\r\n                        _this.blob = new Blob([], {\r\n                            type: 'video/webm'\r\n                        });\r\n                    }\r\n\r\n                    if (callback) {\r\n                        callback(_this.blob);\r\n                    }\r\n                });\r\n            });\r\n        }, 10);\r\n    };\r\n\r\n    var isPausedRecording = false;\r\n\r\n    /**\r\n     * This method pauses the recording process.\r\n     * @method\r\n     * @memberof WhammyRecorder\r\n     * @example\r\n     * recorder.pause();\r\n     */\r\n    this.pause = function() {\r\n        isPausedRecording = true;\r\n    };\r\n\r\n    /**\r\n     * This method resumes the recording process.\r\n     * @method\r\n     * @memberof WhammyRecorder\r\n     * @example\r\n     * recorder.resume();\r\n     */\r\n    this.resume = function() {\r\n        isPausedRecording = false;\r\n\r\n        if (isStopDrawing) {\r\n            this.record();\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method resets currently recorded data.\r\n     * @method\r\n     * @memberof WhammyRecorder\r\n     * @example\r\n     * recorder.clearRecordedData();\r\n     */\r\n    this.clearRecordedData = function() {\r\n        if (!isStopDrawing) {\r\n            this.stop(clearRecordedDataCB);\r\n        }\r\n        clearRecordedDataCB();\r\n    };\r\n\r\n    function clearRecordedDataCB() {\r\n        whammy.frames = [];\r\n        isStopDrawing = true;\r\n        isPausedRecording = false;\r\n    }\r\n\r\n    // for debugging\r\n    this.name = 'WhammyRecorder';\r\n    this.toString = function() {\r\n        return this.name;\r\n    };\r\n\r\n    var canvas = document.createElement('canvas');\r\n    var context = canvas.getContext('2d');\r\n\r\n    var video;\r\n    var lastTime;\r\n    var whammy;\r\n}\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.WhammyRecorder = WhammyRecorder;\r\n}\n\r\n// https://github.com/antimatter15/whammy/blob/master/LICENSE\r\n// _________\r\n// Whammy.js\r\n\r\n// todo: Firefox now supports webp for webm containers!\r\n// their MediaRecorder implementation works well!\r\n// should we provide an option to record via Whammy.js or MediaRecorder API is a better solution?\r\n\r\n/**\r\n * Whammy is a standalone class used by {@link RecordRTC} to bring video recording in Chrome. It is written by {@link https://github.com/antimatter15|antimatter15}\r\n * @summary A real time javascript webm encoder based on a canvas hack.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef Whammy\r\n * @class\r\n * @example\r\n * var recorder = new Whammy().Video(15);\r\n * recorder.add(context || canvas || dataURL);\r\n * var output = recorder.compile();\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n */\r\n\r\nvar Whammy = (function() {\r\n    // a more abstract-ish API\r\n\r\n    function WhammyVideo(duration) {\r\n        this.frames = [];\r\n        this.duration = duration || 1;\r\n        this.quality = 0.8;\r\n    }\r\n\r\n    /**\r\n     * Pass Canvas or Context or image/webp(string) to {@link Whammy} encoder.\r\n     * @method\r\n     * @memberof Whammy\r\n     * @example\r\n     * recorder = new Whammy().Video(0.8, 100);\r\n     * recorder.add(canvas || context || 'image/webp');\r\n     * @param {string} frame - Canvas || Context || image/webp\r\n     * @param {number} duration - Stick a duration (in milliseconds)\r\n     */\r\n    WhammyVideo.prototype.add = function(frame, duration) {\r\n        if ('canvas' in frame) { //CanvasRenderingContext2D\r\n            frame = frame.canvas;\r\n        }\r\n\r\n        if ('toDataURL' in frame) {\r\n            frame = frame.toDataURL('image/webp', this.quality);\r\n        }\r\n\r\n        if (!(/^data:image\\/webp;base64,/ig).test(frame)) {\r\n            throw 'Input must be formatted properly as a base64 encoded DataURI of type image/webp';\r\n        }\r\n        this.frames.push({\r\n            image: frame,\r\n            duration: duration || this.duration\r\n        });\r\n    };\r\n\r\n    function processInWebWorker(_function) {\r\n        var blob = URL.createObjectURL(new Blob([_function.toString(),\r\n            'this.onmessage =  function (eee) {' + _function.name + '(eee.data);}'\r\n        ], {\r\n            type: 'application/javascript'\r\n        }));\r\n\r\n        var worker = new Worker(blob);\r\n        URL.revokeObjectURL(blob);\r\n        return worker;\r\n    }\r\n\r\n    function whammyInWebWorker(frames) {\r\n        function ArrayToWebM(frames) {\r\n            var info = checkFrames(frames);\r\n            if (!info) {\r\n                return [];\r\n            }\r\n\r\n            var clusterMaxDuration = 30000;\r\n\r\n            var EBML = [{\r\n                'id': 0x1a45dfa3, // EBML\r\n                'data': [{\r\n                    'data': 1,\r\n                    'id': 0x4286 // EBMLVersion\r\n                }, {\r\n                    'data': 1,\r\n                    'id': 0x42f7 // EBMLReadVersion\r\n                }, {\r\n                    'data': 4,\r\n                    'id': 0x42f2 // EBMLMaxIDLength\r\n                }, {\r\n                    'data': 8,\r\n                    'id': 0x42f3 // EBMLMaxSizeLength\r\n                }, {\r\n                    'data': 'webm',\r\n                    'id': 0x4282 // DocType\r\n                }, {\r\n                    'data': 2,\r\n                    'id': 0x4287 // DocTypeVersion\r\n                }, {\r\n                    'data': 2,\r\n                    'id': 0x4285 // DocTypeReadVersion\r\n                }]\r\n            }, {\r\n                'id': 0x18538067, // Segment\r\n                'data': [{\r\n                    'id': 0x1549a966, // Info\r\n                    'data': [{\r\n                        'data': 1e6, //do things in millisecs (num of nanosecs for duration scale)\r\n                        'id': 0x2ad7b1 // TimecodeScale\r\n                    }, {\r\n                        'data': 'whammy',\r\n                        'id': 0x4d80 // MuxingApp\r\n                    }, {\r\n                        'data': 'whammy',\r\n                        'id': 0x5741 // WritingApp\r\n                    }, {\r\n                        'data': doubleToString(info.duration),\r\n                        'id': 0x4489 // Duration\r\n                    }]\r\n                }, {\r\n                    'id': 0x1654ae6b, // Tracks\r\n                    'data': [{\r\n                        'id': 0xae, // TrackEntry\r\n                        'data': [{\r\n                            'data': 1,\r\n                            'id': 0xd7 // TrackNumber\r\n                        }, {\r\n                            'data': 1,\r\n                            'id': 0x73c5 // TrackUID\r\n                        }, {\r\n                            'data': 0,\r\n                            'id': 0x9c // FlagLacing\r\n                        }, {\r\n                            'data': 'und',\r\n                            'id': 0x22b59c // Language\r\n                        }, {\r\n                            'data': 'V_VP8',\r\n                            'id': 0x86 // CodecID\r\n                        }, {\r\n                            'data': 'VP8',\r\n                            'id': 0x258688 // CodecName\r\n                        }, {\r\n                            'data': 1,\r\n                            'id': 0x83 // TrackType\r\n                        }, {\r\n                            'id': 0xe0, // Video\r\n                            'data': [{\r\n                                'data': info.width,\r\n                                'id': 0xb0 // PixelWidth\r\n                            }, {\r\n                                'data': info.height,\r\n                                'id': 0xba // PixelHeight\r\n                            }]\r\n                        }]\r\n                    }]\r\n                }]\r\n            }];\r\n\r\n            //Generate clusters (max duration)\r\n            var frameNumber = 0;\r\n            var clusterTimecode = 0;\r\n            while (frameNumber < frames.length) {\r\n\r\n                var clusterFrames = [];\r\n                var clusterDuration = 0;\r\n                do {\r\n                    clusterFrames.push(frames[frameNumber]);\r\n                    clusterDuration += frames[frameNumber].duration;\r\n                    frameNumber++;\r\n                } while (frameNumber < frames.length && clusterDuration < clusterMaxDuration);\r\n\r\n                var clusterCounter = 0;\r\n                var cluster = {\r\n                    'id': 0x1f43b675, // Cluster\r\n                    'data': getClusterData(clusterTimecode, clusterCounter, clusterFrames)\r\n                }; //Add cluster to segment\r\n                EBML[1].data.push(cluster);\r\n                clusterTimecode += clusterDuration;\r\n            }\r\n\r\n            return generateEBML(EBML);\r\n        }\r\n\r\n        function getClusterData(clusterTimecode, clusterCounter, clusterFrames) {\r\n            return [{\r\n                'data': clusterTimecode,\r\n                'id': 0xe7 // Timecode\r\n            }].concat(clusterFrames.map(function(webp) {\r\n                var block = makeSimpleBlock({\r\n                    discardable: 0,\r\n                    frame: webp.data.slice(4),\r\n                    invisible: 0,\r\n                    keyframe: 1,\r\n                    lacing: 0,\r\n                    trackNum: 1,\r\n                    timecode: Math.round(clusterCounter)\r\n                });\r\n                clusterCounter += webp.duration;\r\n                return {\r\n                    data: block,\r\n                    id: 0xa3\r\n                };\r\n            }));\r\n        }\r\n\r\n        // sums the lengths of all the frames and gets the duration\r\n\r\n        function checkFrames(frames) {\r\n            if (!frames[0]) {\r\n                postMessage({\r\n                    error: 'Something went wrong. Maybe WebP format is not supported in the current browser.'\r\n                });\r\n                return;\r\n            }\r\n\r\n            var width = frames[0].width,\r\n                height = frames[0].height,\r\n                duration = frames[0].duration;\r\n\r\n            for (var i = 1; i < frames.length; i++) {\r\n                duration += frames[i].duration;\r\n            }\r\n            return {\r\n                duration: duration,\r\n                width: width,\r\n                height: height\r\n            };\r\n        }\r\n\r\n        function numToBuffer(num) {\r\n            var parts = [];\r\n            while (num > 0) {\r\n                parts.push(num & 0xff);\r\n                num = num >> 8;\r\n            }\r\n            return new Uint8Array(parts.reverse());\r\n        }\r\n\r\n        function strToBuffer(str) {\r\n            return new Uint8Array(str.split('').map(function(e) {\r\n                return e.charCodeAt(0);\r\n            }));\r\n        }\r\n\r\n        function bitsToBuffer(bits) {\r\n            var data = [];\r\n            var pad = (bits.length % 8) ? (new Array(1 + 8 - (bits.length % 8))).join('0') : '';\r\n            bits = pad + bits;\r\n            for (var i = 0; i < bits.length; i += 8) {\r\n                data.push(parseInt(bits.substr(i, 8), 2));\r\n            }\r\n            return new Uint8Array(data);\r\n        }\r\n\r\n        function generateEBML(json) {\r\n            var ebml = [];\r\n            for (var i = 0; i < json.length; i++) {\r\n                var data = json[i].data;\r\n\r\n                if (typeof data === 'object') {\r\n                    data = generateEBML(data);\r\n                }\r\n\r\n                if (typeof data === 'number') {\r\n                    data = bitsToBuffer(data.toString(2));\r\n                }\r\n\r\n                if (typeof data === 'string') {\r\n                    data = strToBuffer(data);\r\n                }\r\n\r\n                var len = data.size || data.byteLength || data.length;\r\n                var zeroes = Math.ceil(Math.ceil(Math.log(len) / Math.log(2)) / 8);\r\n                var sizeToString = len.toString(2);\r\n                var padded = (new Array((zeroes * 7 + 7 + 1) - sizeToString.length)).join('0') + sizeToString;\r\n                var size = (new Array(zeroes)).join('0') + '1' + padded;\r\n\r\n                ebml.push(numToBuffer(json[i].id));\r\n                ebml.push(bitsToBuffer(size));\r\n                ebml.push(data);\r\n            }\r\n\r\n            return new Blob(ebml, {\r\n                type: 'video/webm'\r\n            });\r\n        }\r\n\r\n        function toBinStrOld(bits) {\r\n            var data = '';\r\n            var pad = (bits.length % 8) ? (new Array(1 + 8 - (bits.length % 8))).join('0') : '';\r\n            bits = pad + bits;\r\n            for (var i = 0; i < bits.length; i += 8) {\r\n                data += String.fromCharCode(parseInt(bits.substr(i, 8), 2));\r\n            }\r\n            return data;\r\n        }\r\n\r\n        function makeSimpleBlock(data) {\r\n            var flags = 0;\r\n\r\n            if (data.keyframe) {\r\n                flags |= 128;\r\n            }\r\n\r\n            if (data.invisible) {\r\n                flags |= 8;\r\n            }\r\n\r\n            if (data.lacing) {\r\n                flags |= (data.lacing << 1);\r\n            }\r\n\r\n            if (data.discardable) {\r\n                flags |= 1;\r\n            }\r\n\r\n            if (data.trackNum > 127) {\r\n                throw 'TrackNumber > 127 not supported';\r\n            }\r\n\r\n            var out = [data.trackNum | 0x80, data.timecode >> 8, data.timecode & 0xff, flags].map(function(e) {\r\n                return String.fromCharCode(e);\r\n            }).join('') + data.frame;\r\n\r\n            return out;\r\n        }\r\n\r\n        function parseWebP(riff) {\r\n            var VP8 = riff.RIFF[0].WEBP[0];\r\n\r\n            var frameStart = VP8.indexOf('\\x9d\\x01\\x2a'); // A VP8 keyframe starts with the 0x9d012a header\r\n            for (var i = 0, c = []; i < 4; i++) {\r\n                c[i] = VP8.charCodeAt(frameStart + 3 + i);\r\n            }\r\n\r\n            var width, height, tmp;\r\n\r\n            //the code below is literally copied verbatim from the bitstream spec\r\n            tmp = (c[1] << 8) | c[0];\r\n            width = tmp & 0x3FFF;\r\n            tmp = (c[3] << 8) | c[2];\r\n            height = tmp & 0x3FFF;\r\n            return {\r\n                width: width,\r\n                height: height,\r\n                data: VP8,\r\n                riff: riff\r\n            };\r\n        }\r\n\r\n        function getStrLength(string, offset) {\r\n            return parseInt(string.substr(offset + 4, 4).split('').map(function(i) {\r\n                var unpadded = i.charCodeAt(0).toString(2);\r\n                return (new Array(8 - unpadded.length + 1)).join('0') + unpadded;\r\n            }).join(''), 2);\r\n        }\r\n\r\n        function parseRIFF(string) {\r\n            var offset = 0;\r\n            var chunks = {};\r\n\r\n            while (offset < string.length) {\r\n                var id = string.substr(offset, 4);\r\n                var len = getStrLength(string, offset);\r\n                var data = string.substr(offset + 4 + 4, len);\r\n                offset += 4 + 4 + len;\r\n                chunks[id] = chunks[id] || [];\r\n\r\n                if (id === 'RIFF' || id === 'LIST') {\r\n                    chunks[id].push(parseRIFF(data));\r\n                } else {\r\n                    chunks[id].push(data);\r\n                }\r\n            }\r\n            return chunks;\r\n        }\r\n\r\n        function doubleToString(num) {\r\n            return [].slice.call(\r\n                new Uint8Array((new Float64Array([num])).buffer), 0).map(function(e) {\r\n                return String.fromCharCode(e);\r\n            }).reverse().join('');\r\n        }\r\n\r\n        var webm = new ArrayToWebM(frames.map(function(frame) {\r\n            var webp = parseWebP(parseRIFF(atob(frame.image.slice(23))));\r\n            webp.duration = frame.duration;\r\n            return webp;\r\n        }));\r\n\r\n        postMessage(webm);\r\n    }\r\n\r\n    /**\r\n     * Encodes frames in WebM container. It uses WebWorkinvoke to invoke 'ArrayToWebM' method.\r\n     * @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.\r\n     * @method\r\n     * @memberof Whammy\r\n     * @example\r\n     * recorder = new Whammy().Video(0.8, 100);\r\n     * recorder.compile(function(blob) {\r\n     *    // blob.size - blob.type\r\n     * });\r\n     */\r\n    WhammyVideo.prototype.compile = function(callback) {\r\n        var webWorker = processInWebWorker(whammyInWebWorker);\r\n\r\n        webWorker.onmessage = function(event) {\r\n            if (event.data.error) {\r\n                console.error(event.data.error);\r\n                return;\r\n            }\r\n            callback(event.data);\r\n        };\r\n\r\n        webWorker.postMessage(this.frames);\r\n    };\r\n\r\n    return {\r\n        /**\r\n         * A more abstract-ish API.\r\n         * @method\r\n         * @memberof Whammy\r\n         * @example\r\n         * recorder = new Whammy().Video(0.8, 100);\r\n         * @param {?number} speed - 0.8\r\n         * @param {?number} quality - 100\r\n         */\r\n        Video: WhammyVideo\r\n    };\r\n})();\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.Whammy = Whammy;\r\n}\n\r\n// ______________ (indexed-db)\r\n// DiskStorage.js\r\n\r\n/**\r\n * DiskStorage is a standalone object used by {@link RecordRTC} to store recorded blobs in IndexedDB storage.\r\n * @summary Writing blobs into IndexedDB.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @example\r\n * DiskStorage.Store({\r\n *     audioBlob: yourAudioBlob,\r\n *     videoBlob: yourVideoBlob,\r\n *     gifBlob  : yourGifBlob\r\n * });\r\n * DiskStorage.Fetch(function(dataURL, type) {\r\n *     if(type === 'audioBlob') { }\r\n *     if(type === 'videoBlob') { }\r\n *     if(type === 'gifBlob')   { }\r\n * });\r\n * // DiskStorage.dataStoreName = 'recordRTC';\r\n * // DiskStorage.onError = function(error) { };\r\n * @property {function} init - This method must be called once to initialize IndexedDB ObjectStore. Though, it is auto-used internally.\r\n * @property {function} Fetch - This method fetches stored blobs from IndexedDB.\r\n * @property {function} Store - This method stores blobs in IndexedDB.\r\n * @property {function} onError - This function is invoked for any known/unknown error.\r\n * @property {string} dataStoreName - Name of the ObjectStore created in IndexedDB storage.\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n */\r\n\r\n\r\nvar DiskStorage = {\r\n    /**\r\n     * This method must be called once to initialize IndexedDB ObjectStore. Though, it is auto-used internally.\r\n     * @method\r\n     * @memberof DiskStorage\r\n     * @internal\r\n     * @example\r\n     * DiskStorage.init();\r\n     */\r\n    init: function() {\r\n        var self = this;\r\n\r\n        if (typeof indexedDB === 'undefined' || typeof indexedDB.open === 'undefined') {\r\n            console.error('IndexedDB API are not available in this browser.');\r\n            return;\r\n        }\r\n\r\n        var dbVersion = 1;\r\n        var dbName = this.dbName || location.href.replace(/\\/|:|#|%|\\.|\\[|\\]/g, ''),\r\n            db;\r\n        var request = indexedDB.open(dbName, dbVersion);\r\n\r\n        function createObjectStore(dataBase) {\r\n            dataBase.createObjectStore(self.dataStoreName);\r\n        }\r\n\r\n        function putInDB() {\r\n            var transaction = db.transaction([self.dataStoreName], 'readwrite');\r\n\r\n            if (self.videoBlob) {\r\n                transaction.objectStore(self.dataStoreName).put(self.videoBlob, 'videoBlob');\r\n            }\r\n\r\n            if (self.gifBlob) {\r\n                transaction.objectStore(self.dataStoreName).put(self.gifBlob, 'gifBlob');\r\n            }\r\n\r\n            if (self.audioBlob) {\r\n                transaction.objectStore(self.dataStoreName).put(self.audioBlob, 'audioBlob');\r\n            }\r\n\r\n            function getFromStore(portionName) {\r\n                transaction.objectStore(self.dataStoreName).get(portionName).onsuccess = function(event) {\r\n                    if (self.callback) {\r\n                        self.callback(event.target.result, portionName);\r\n                    }\r\n                };\r\n            }\r\n\r\n            getFromStore('audioBlob');\r\n            getFromStore('videoBlob');\r\n            getFromStore('gifBlob');\r\n        }\r\n\r\n        request.onerror = self.onError;\r\n\r\n        request.onsuccess = function() {\r\n            db = request.result;\r\n            db.onerror = self.onError;\r\n\r\n            if (db.setVersion) {\r\n                if (db.version !== dbVersion) {\r\n                    var setVersion = db.setVersion(dbVersion);\r\n                    setVersion.onsuccess = function() {\r\n                        createObjectStore(db);\r\n                        putInDB();\r\n                    };\r\n                } else {\r\n                    putInDB();\r\n                }\r\n            } else {\r\n                putInDB();\r\n            }\r\n        };\r\n        request.onupgradeneeded = function(event) {\r\n            createObjectStore(event.target.result);\r\n        };\r\n    },\r\n    /**\r\n     * This method fetches stored blobs from IndexedDB.\r\n     * @method\r\n     * @memberof DiskStorage\r\n     * @internal\r\n     * @example\r\n     * DiskStorage.Fetch(function(dataURL, type) {\r\n     *     if(type === 'audioBlob') { }\r\n     *     if(type === 'videoBlob') { }\r\n     *     if(type === 'gifBlob')   { }\r\n     * });\r\n     */\r\n    Fetch: function(callback) {\r\n        this.callback = callback;\r\n        this.init();\r\n\r\n        return this;\r\n    },\r\n    /**\r\n     * This method stores blobs in IndexedDB.\r\n     * @method\r\n     * @memberof DiskStorage\r\n     * @internal\r\n     * @example\r\n     * DiskStorage.Store({\r\n     *     audioBlob: yourAudioBlob,\r\n     *     videoBlob: yourVideoBlob,\r\n     *     gifBlob  : yourGifBlob\r\n     * });\r\n     */\r\n    Store: function(config) {\r\n        this.audioBlob = config.audioBlob;\r\n        this.videoBlob = config.videoBlob;\r\n        this.gifBlob = config.gifBlob;\r\n\r\n        this.init();\r\n\r\n        return this;\r\n    },\r\n    /**\r\n     * This function is invoked for any known/unknown error.\r\n     * @method\r\n     * @memberof DiskStorage\r\n     * @internal\r\n     * @example\r\n     * DiskStorage.onError = function(error){\r\n     *     alerot( JSON.stringify(error) );\r\n     * };\r\n     */\r\n    onError: function(error) {\r\n        console.error(JSON.stringify(error, null, '\\t'));\r\n    },\r\n\r\n    /**\r\n     * @property {string} dataStoreName - Name of the ObjectStore created in IndexedDB storage.\r\n     * @memberof DiskStorage\r\n     * @internal\r\n     * @example\r\n     * DiskStorage.dataStoreName = 'recordRTC';\r\n     */\r\n    dataStoreName: 'recordRTC',\r\n    dbName: null\r\n};\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.DiskStorage = DiskStorage;\r\n}\n\r\n// ______________\r\n// GifRecorder.js\r\n\r\n/**\r\n * GifRecorder is standalone calss used by {@link RecordRTC} to record video or canvas into animated gif.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef GifRecorder\r\n * @class\r\n * @example\r\n * var recorder = new GifRecorder(mediaStream || canvas || context, { onGifPreview: function, onGifRecordingStarted: function, width: 1280, height: 720, frameRate: 200, quality: 10 });\r\n * recorder.record();\r\n * recorder.stop(function(blob) {\r\n *     img.src = URL.createObjectURL(blob);\r\n * });\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {MediaStream} mediaStream - MediaStream object or HTMLCanvasElement or CanvasRenderingContext2D.\r\n * @param {object} config - {disableLogs:true, initCallback: function, width: 320, height: 240, frameRate: 200, quality: 10}\r\n */\r\n\r\nfunction GifRecorder(mediaStream, config) {\r\n    if (typeof GIFEncoder === 'undefined') {\r\n        var script = document.createElement('script');\r\n        script.src = 'https://www.webrtc-experiment.com/gif-recorder.js';\r\n        (document.body || document.documentElement).appendChild(script);\r\n    }\r\n\r\n    config = config || {};\r\n\r\n    var isHTMLObject = mediaStream instanceof CanvasRenderingContext2D || mediaStream instanceof HTMLCanvasElement;\r\n\r\n    /**\r\n     * This method records MediaStream.\r\n     * @method\r\n     * @memberof GifRecorder\r\n     * @example\r\n     * recorder.record();\r\n     */\r\n    this.record = function() {\r\n        if (typeof GIFEncoder === 'undefined') {\r\n            setTimeout(self.record, 1000);\r\n            return;\r\n        }\r\n\r\n        if (!isLoadedMetaData) {\r\n            setTimeout(self.record, 1000);\r\n            return;\r\n        }\r\n\r\n        if (!isHTMLObject) {\r\n            if (!config.width) {\r\n                config.width = video.offsetWidth || 320;\r\n            }\r\n\r\n            if (!config.height) {\r\n                config.height = video.offsetHeight || 240;\r\n            }\r\n\r\n            if (!config.video) {\r\n                config.video = {\r\n                    width: config.width,\r\n                    height: config.height\r\n                };\r\n            }\r\n\r\n            if (!config.canvas) {\r\n                config.canvas = {\r\n                    width: config.width,\r\n                    height: config.height\r\n                };\r\n            }\r\n\r\n            canvas.width = config.canvas.width || 320;\r\n            canvas.height = config.canvas.height || 240;\r\n\r\n            video.width = config.video.width || 320;\r\n            video.height = config.video.height || 240;\r\n        }\r\n\r\n        // external library to record as GIF images\r\n        gifEncoder = new GIFEncoder();\r\n\r\n        // void setRepeat(int iter) \r\n        // Sets the number of times the set of GIF frames should be played. \r\n        // Default is 1; 0 means play indefinitely.\r\n        gifEncoder.setRepeat(0);\r\n\r\n        // void setFrameRate(Number fps) \r\n        // Sets frame rate in frames per second. \r\n        // Equivalent to setDelay(1000/fps).\r\n        // Using \"setDelay\" instead of \"setFrameRate\"\r\n        gifEncoder.setDelay(config.frameRate || 200);\r\n\r\n        // void setQuality(int quality) \r\n        // Sets quality of color quantization (conversion of images to the \r\n        // maximum 256 colors allowed by the GIF specification). \r\n        // Lower values (minimum = 1) produce better colors, \r\n        // but slow processing significantly. 10 is the default, \r\n        // and produces good color mapping at reasonable speeds. \r\n        // Values greater than 20 do not yield significant improvements in speed.\r\n        gifEncoder.setQuality(config.quality || 10);\r\n\r\n        // Boolean start() \r\n        // This writes the GIF Header and returns false if it fails.\r\n        gifEncoder.start();\r\n\r\n        if (typeof config.onGifRecordingStarted === 'function') {\r\n            config.onGifRecordingStarted();\r\n        }\r\n\r\n        startTime = Date.now();\r\n\r\n        function drawVideoFrame(time) {\r\n            if (self.clearedRecordedData === true) {\r\n                return;\r\n            }\r\n\r\n            if (isPausedRecording) {\r\n                return setTimeout(function() {\r\n                    drawVideoFrame(time);\r\n                }, 100);\r\n            }\r\n\r\n            lastAnimationFrame = requestAnimationFrame(drawVideoFrame);\r\n\r\n            if (typeof lastFrameTime === undefined) {\r\n                lastFrameTime = time;\r\n            }\r\n\r\n            // ~10 fps\r\n            if (time - lastFrameTime < 90) {\r\n                return;\r\n            }\r\n\r\n            if (!isHTMLObject && video.paused) {\r\n                // via: https://github.com/muaz-khan/WebRTC-Experiment/pull/316\r\n                // Tweak for Android Chrome\r\n                video.play();\r\n            }\r\n\r\n            if (!isHTMLObject) {\r\n                context.drawImage(video, 0, 0, canvas.width, canvas.height);\r\n            }\r\n\r\n            if (config.onGifPreview) {\r\n                config.onGifPreview(canvas.toDataURL('image/png'));\r\n            }\r\n\r\n            gifEncoder.addFrame(context);\r\n            lastFrameTime = time;\r\n        }\r\n\r\n        lastAnimationFrame = requestAnimationFrame(drawVideoFrame);\r\n\r\n        if (config.initCallback) {\r\n            config.initCallback();\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method stops recording MediaStream.\r\n     * @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.\r\n     * @method\r\n     * @memberof GifRecorder\r\n     * @example\r\n     * recorder.stop(function(blob) {\r\n     *     img.src = URL.createObjectURL(blob);\r\n     * });\r\n     */\r\n    this.stop = function(callback) {\r\n        callback = callback || function() {};\r\n\r\n        if (lastAnimationFrame) {\r\n            cancelAnimationFrame(lastAnimationFrame);\r\n        }\r\n\r\n        endTime = Date.now();\r\n\r\n        /**\r\n         * @property {Blob} blob - The recorded blob object.\r\n         * @memberof GifRecorder\r\n         * @example\r\n         * recorder.stop(function(){\r\n         *     var blob = recorder.blob;\r\n         * });\r\n         */\r\n        this.blob = new Blob([new Uint8Array(gifEncoder.stream().bin)], {\r\n            type: 'image/gif'\r\n        });\r\n\r\n        callback(this.blob);\r\n\r\n        // bug: find a way to clear old recorded blobs\r\n        gifEncoder.stream().bin = [];\r\n    };\r\n\r\n    var isPausedRecording = false;\r\n\r\n    /**\r\n     * This method pauses the recording process.\r\n     * @method\r\n     * @memberof GifRecorder\r\n     * @example\r\n     * recorder.pause();\r\n     */\r\n    this.pause = function() {\r\n        isPausedRecording = true;\r\n    };\r\n\r\n    /**\r\n     * This method resumes the recording process.\r\n     * @method\r\n     * @memberof GifRecorder\r\n     * @example\r\n     * recorder.resume();\r\n     */\r\n    this.resume = function() {\r\n        isPausedRecording = false;\r\n    };\r\n\r\n    /**\r\n     * This method resets currently recorded data.\r\n     * @method\r\n     * @memberof GifRecorder\r\n     * @example\r\n     * recorder.clearRecordedData();\r\n     */\r\n    this.clearRecordedData = function() {\r\n        self.clearedRecordedData = true;\r\n        clearRecordedDataCB();\r\n    };\r\n\r\n    function clearRecordedDataCB() {\r\n        if (gifEncoder) {\r\n            gifEncoder.stream().bin = [];\r\n        }\r\n    }\r\n\r\n    // for debugging\r\n    this.name = 'GifRecorder';\r\n    this.toString = function() {\r\n        return this.name;\r\n    };\r\n\r\n    var canvas = document.createElement('canvas');\r\n    var context = canvas.getContext('2d');\r\n\r\n    if (isHTMLObject) {\r\n        if (mediaStream instanceof CanvasRenderingContext2D) {\r\n            context = mediaStream;\r\n            canvas = context.canvas;\r\n        } else if (mediaStream instanceof HTMLCanvasElement) {\r\n            context = mediaStream.getContext('2d');\r\n            canvas = mediaStream;\r\n        }\r\n    }\r\n\r\n    var isLoadedMetaData = true;\r\n\r\n    if (!isHTMLObject) {\r\n        var video = document.createElement('video');\r\n        video.muted = true;\r\n        video.autoplay = true;\r\n        video.playsInline = true;\r\n\r\n        isLoadedMetaData = false;\r\n        video.onloadedmetadata = function() {\r\n            isLoadedMetaData = true;\r\n        };\r\n\r\n        setSrcObject(mediaStream, video);\r\n\r\n        video.play();\r\n    }\r\n\r\n    var lastAnimationFrame = null;\r\n    var startTime, endTime, lastFrameTime;\r\n\r\n    var gifEncoder;\r\n\r\n    var self = this;\r\n}\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.GifRecorder = GifRecorder;\r\n}\n\r\n// Last time updated: 2019-06-21 4:09:42 AM UTC\r\n\r\n// ________________________\r\n// MultiStreamsMixer v1.2.2\r\n\r\n// Open-Sourced: https://github.com/muaz-khan/MultiStreamsMixer\r\n\r\n// --------------------------------------------------\r\n// Muaz Khan     - www.MuazKhan.com\r\n// MIT License   - www.WebRTC-Experiment.com/licence\r\n// --------------------------------------------------\r\n\r\nfunction MultiStreamsMixer(arrayOfMediaStreams, elementClass) {\r\n\r\n    var browserFakeUserAgent = 'Fake/5.0 (FakeOS) AppleWebKit/123 (KHTML, like Gecko) Fake/12.3.4567.89 Fake/123.45';\r\n\r\n    (function(that) {\r\n        if (typeof RecordRTC !== 'undefined') {\r\n            return;\r\n        }\r\n\r\n        if (!that) {\r\n            return;\r\n        }\r\n\r\n        if (typeof window !== 'undefined') {\r\n            return;\r\n        }\r\n\r\n        if (typeof global === 'undefined') {\r\n            return;\r\n        }\r\n\r\n        global.navigator = {\r\n            userAgent: browserFakeUserAgent,\r\n            getUserMedia: function() {}\r\n        };\r\n\r\n        if (!global.console) {\r\n            global.console = {};\r\n        }\r\n\r\n        if (typeof global.console.log === 'undefined' || typeof global.console.error === 'undefined') {\r\n            global.console.error = global.console.log = global.console.log || function() {\r\n                console.log(arguments);\r\n            };\r\n        }\r\n\r\n        if (typeof document === 'undefined') {\r\n            /*global document:true */\r\n            that.document = {\r\n                documentElement: {\r\n                    appendChild: function() {\r\n                        return '';\r\n                    }\r\n                }\r\n            };\r\n\r\n            document.createElement = document.captureStream = document.mozCaptureStream = function() {\r\n                var obj = {\r\n                    getContext: function() {\r\n                        return obj;\r\n                    },\r\n                    play: function() {},\r\n                    pause: function() {},\r\n                    drawImage: function() {},\r\n                    toDataURL: function() {\r\n                        return '';\r\n                    },\r\n                    style: {}\r\n                };\r\n                return obj;\r\n            };\r\n\r\n            that.HTMLVideoElement = function() {};\r\n        }\r\n\r\n        if (typeof location === 'undefined') {\r\n            /*global location:true */\r\n            that.location = {\r\n                protocol: 'file:',\r\n                href: '',\r\n                hash: ''\r\n            };\r\n        }\r\n\r\n        if (typeof screen === 'undefined') {\r\n            /*global screen:true */\r\n            that.screen = {\r\n                width: 0,\r\n                height: 0\r\n            };\r\n        }\r\n\r\n        if (typeof URL === 'undefined') {\r\n            /*global screen:true */\r\n            that.URL = {\r\n                createObjectURL: function() {\r\n                    return '';\r\n                },\r\n                revokeObjectURL: function() {\r\n                    return '';\r\n                }\r\n            };\r\n        }\r\n\r\n        /*global window:true */\r\n        that.window = global;\r\n    })(typeof global !== 'undefined' ? global : null);\r\n\r\n    // requires: chrome://flags/#enable-experimental-web-platform-features\r\n\r\n    elementClass = elementClass || 'multi-streams-mixer';\r\n\r\n    var videos = [];\r\n    var isStopDrawingFrames = false;\r\n\r\n    var canvas = document.createElement('canvas');\r\n    var context = canvas.getContext('2d');\r\n    canvas.style.opacity = 0;\r\n    canvas.style.position = 'absolute';\r\n    canvas.style.zIndex = -1;\r\n    canvas.style.top = '-1000em';\r\n    canvas.style.left = '-1000em';\r\n    canvas.className = elementClass;\r\n    (document.body || document.documentElement).appendChild(canvas);\r\n\r\n    this.disableLogs = false;\r\n    this.frameInterval = 10;\r\n\r\n    this.width = 360;\r\n    this.height = 240;\r\n\r\n    // use gain node to prevent echo\r\n    this.useGainNode = true;\r\n\r\n    var self = this;\r\n\r\n    // _____________________________\r\n    // Cross-Browser-Declarations.js\r\n\r\n    // WebAudio API representer\r\n    var AudioContext = window.AudioContext;\r\n\r\n    if (typeof AudioContext === 'undefined') {\r\n        if (typeof webkitAudioContext !== 'undefined') {\r\n            /*global AudioContext:true */\r\n            AudioContext = webkitAudioContext;\r\n        }\r\n\r\n        if (typeof mozAudioContext !== 'undefined') {\r\n            /*global AudioContext:true */\r\n            AudioContext = mozAudioContext;\r\n        }\r\n    }\r\n\r\n    /*jshint -W079 */\r\n    var URL = window.URL;\r\n\r\n    if (typeof URL === 'undefined' && typeof webkitURL !== 'undefined') {\r\n        /*global URL:true */\r\n        URL = webkitURL;\r\n    }\r\n\r\n    if (typeof navigator !== 'undefined' && typeof navigator.getUserMedia === 'undefined') { // maybe window.navigator?\r\n        if (typeof navigator.webkitGetUserMedia !== 'undefined') {\r\n            navigator.getUserMedia = navigator.webkitGetUserMedia;\r\n        }\r\n\r\n        if (typeof navigator.mozGetUserMedia !== 'undefined') {\r\n            navigator.getUserMedia = navigator.mozGetUserMedia;\r\n        }\r\n    }\r\n\r\n    var MediaStream = window.MediaStream;\r\n\r\n    if (typeof MediaStream === 'undefined' && typeof webkitMediaStream !== 'undefined') {\r\n        MediaStream = webkitMediaStream;\r\n    }\r\n\r\n    /*global MediaStream:true */\r\n    if (typeof MediaStream !== 'undefined') {\r\n        // override \"stop\" method for all browsers\r\n        if (typeof MediaStream.prototype.stop === 'undefined') {\r\n            MediaStream.prototype.stop = function() {\r\n                this.getTracks().forEach(function(track) {\r\n                    track.stop();\r\n                });\r\n            };\r\n        }\r\n    }\r\n\r\n    var Storage = {};\r\n\r\n    if (typeof AudioContext !== 'undefined') {\r\n        Storage.AudioContext = AudioContext;\r\n    } else if (typeof webkitAudioContext !== 'undefined') {\r\n        Storage.AudioContext = webkitAudioContext;\r\n    }\r\n\r\n    function setSrcObject(stream, element) {\r\n        if ('srcObject' in element) {\r\n            element.srcObject = stream;\r\n        } else if ('mozSrcObject' in element) {\r\n            element.mozSrcObject = stream;\r\n        } else {\r\n            element.srcObject = stream;\r\n        }\r\n    }\r\n\r\n    this.startDrawingFrames = function() {\r\n        drawVideosToCanvas();\r\n    };\r\n\r\n    function drawVideosToCanvas() {\r\n        if (isStopDrawingFrames) {\r\n            return;\r\n        }\r\n\r\n        var videosLength = videos.length;\r\n\r\n        var fullcanvas = false;\r\n        var remaining = [];\r\n        videos.forEach(function(video) {\r\n            if (!video.stream) {\r\n                video.stream = {};\r\n            }\r\n\r\n            if (video.stream.fullcanvas) {\r\n                fullcanvas = video;\r\n            } else {\r\n                // todo: video.stream.active or video.stream.live to fix blank frames issues?\r\n                remaining.push(video);\r\n            }\r\n        });\r\n\r\n        if (fullcanvas) {\r\n            canvas.width = fullcanvas.stream.width;\r\n            canvas.height = fullcanvas.stream.height;\r\n        } else if (remaining.length) {\r\n            canvas.width = videosLength > 1 ? remaining[0].width * 2 : remaining[0].width;\r\n\r\n            var height = 1;\r\n            if (videosLength === 3 || videosLength === 4) {\r\n                height = 2;\r\n            }\r\n            if (videosLength === 5 || videosLength === 6) {\r\n                height = 3;\r\n            }\r\n            if (videosLength === 7 || videosLength === 8) {\r\n                height = 4;\r\n            }\r\n            if (videosLength === 9 || videosLength === 10) {\r\n                height = 5;\r\n            }\r\n            canvas.height = remaining[0].height * height;\r\n        } else {\r\n            canvas.width = self.width || 360;\r\n            canvas.height = self.height || 240;\r\n        }\r\n\r\n        if (fullcanvas && fullcanvas instanceof HTMLVideoElement) {\r\n            drawImage(fullcanvas);\r\n        }\r\n\r\n        remaining.forEach(function(video, idx) {\r\n            drawImage(video, idx);\r\n        });\r\n\r\n        setTimeout(drawVideosToCanvas, self.frameInterval);\r\n    }\r\n\r\n    function drawImage(video, idx) {\r\n        if (isStopDrawingFrames) {\r\n            return;\r\n        }\r\n\r\n        var x = 0;\r\n        var y = 0;\r\n        var width = video.width;\r\n        var height = video.height;\r\n\r\n        if (idx === 1) {\r\n            x = video.width;\r\n        }\r\n\r\n        if (idx === 2) {\r\n            y = video.height;\r\n        }\r\n\r\n        if (idx === 3) {\r\n            x = video.width;\r\n            y = video.height;\r\n        }\r\n\r\n        if (idx === 4) {\r\n            y = video.height * 2;\r\n        }\r\n\r\n        if (idx === 5) {\r\n            x = video.width;\r\n            y = video.height * 2;\r\n        }\r\n\r\n        if (idx === 6) {\r\n            y = video.height * 3;\r\n        }\r\n\r\n        if (idx === 7) {\r\n            x = video.width;\r\n            y = video.height * 3;\r\n        }\r\n\r\n        if (typeof video.stream.left !== 'undefined') {\r\n            x = video.stream.left;\r\n        }\r\n\r\n        if (typeof video.stream.top !== 'undefined') {\r\n            y = video.stream.top;\r\n        }\r\n\r\n        if (typeof video.stream.width !== 'undefined') {\r\n            width = video.stream.width;\r\n        }\r\n\r\n        if (typeof video.stream.height !== 'undefined') {\r\n            height = video.stream.height;\r\n        }\r\n\r\n        context.drawImage(video, x, y, width, height);\r\n\r\n        if (typeof video.stream.onRender === 'function') {\r\n            video.stream.onRender(context, x, y, width, height, idx);\r\n        }\r\n    }\r\n\r\n    function getMixedStream() {\r\n        isStopDrawingFrames = false;\r\n        var mixedVideoStream = getMixedVideoStream();\r\n\r\n        var mixedAudioStream = getMixedAudioStream();\r\n        if (mixedAudioStream) {\r\n            mixedAudioStream.getTracks().filter(function(t) {\r\n                return t.kind === 'audio';\r\n            }).forEach(function(track) {\r\n                mixedVideoStream.addTrack(track);\r\n            });\r\n        }\r\n\r\n        var fullcanvas;\r\n        arrayOfMediaStreams.forEach(function(stream) {\r\n            if (stream.fullcanvas) {\r\n                fullcanvas = true;\r\n            }\r\n        });\r\n\r\n        // mixedVideoStream.prototype.appendStreams = appendStreams;\r\n        // mixedVideoStream.prototype.resetVideoStreams = resetVideoStreams;\r\n        // mixedVideoStream.prototype.clearRecordedData = clearRecordedData;\r\n\r\n        return mixedVideoStream;\r\n    }\r\n\r\n    function getMixedVideoStream() {\r\n        resetVideoStreams();\r\n\r\n        var capturedStream;\r\n\r\n        if ('captureStream' in canvas) {\r\n            capturedStream = canvas.captureStream();\r\n        } else if ('mozCaptureStream' in canvas) {\r\n            capturedStream = canvas.mozCaptureStream();\r\n        } else if (!self.disableLogs) {\r\n            console.error('Upgrade to latest Chrome or otherwise enable this flag: chrome://flags/#enable-experimental-web-platform-features');\r\n        }\r\n\r\n        var videoStream = new MediaStream();\r\n\r\n        capturedStream.getTracks().filter(function(t) {\r\n            return t.kind === 'video';\r\n        }).forEach(function(track) {\r\n            videoStream.addTrack(track);\r\n        });\r\n\r\n        canvas.stream = videoStream;\r\n\r\n        return videoStream;\r\n    }\r\n\r\n    function getMixedAudioStream() {\r\n        // via: @pehrsons\r\n        if (!Storage.AudioContextConstructor) {\r\n            Storage.AudioContextConstructor = new Storage.AudioContext();\r\n        }\r\n\r\n        self.audioContext = Storage.AudioContextConstructor;\r\n\r\n        self.audioSources = [];\r\n\r\n        if (self.useGainNode === true) {\r\n            self.gainNode = self.audioContext.createGain();\r\n            self.gainNode.connect(self.audioContext.destination);\r\n            self.gainNode.gain.value = 0; // don't hear self\r\n        }\r\n\r\n        var audioTracksLength = 0;\r\n        arrayOfMediaStreams.forEach(function(stream) {\r\n            if (!stream.getTracks().filter(function(t) {\r\n                    return t.kind === 'audio';\r\n                }).length) {\r\n                return;\r\n            }\r\n\r\n            audioTracksLength++;\r\n\r\n            var audioSource = self.audioContext.createMediaStreamSource(stream);\r\n\r\n            if (self.useGainNode === true) {\r\n                audioSource.connect(self.gainNode);\r\n            }\r\n\r\n            self.audioSources.push(audioSource);\r\n        });\r\n\r\n        if (!audioTracksLength) {\r\n            // because \"self.audioContext\" is not initialized\r\n            // that's why we've to ignore rest of the code\r\n            return;\r\n        }\r\n\r\n        self.audioDestination = self.audioContext.createMediaStreamDestination();\r\n        self.audioSources.forEach(function(audioSource) {\r\n            audioSource.connect(self.audioDestination);\r\n        });\r\n        return self.audioDestination.stream;\r\n    }\r\n\r\n    function getVideo(stream) {\r\n        var video = document.createElement('video');\r\n\r\n        setSrcObject(stream, video);\r\n\r\n        video.className = elementClass;\r\n\r\n        video.muted = true;\r\n        video.volume = 0;\r\n\r\n        video.width = stream.width || self.width || 360;\r\n        video.height = stream.height || self.height || 240;\r\n\r\n        video.play();\r\n\r\n        return video;\r\n    }\r\n\r\n    this.appendStreams = function(streams) {\r\n        if (!streams) {\r\n            throw 'First parameter is required.';\r\n        }\r\n\r\n        if (!(streams instanceof Array)) {\r\n            streams = [streams];\r\n        }\r\n\r\n        streams.forEach(function(stream) {\r\n            var newStream = new MediaStream();\r\n\r\n            if (stream.getTracks().filter(function(t) {\r\n                    return t.kind === 'video';\r\n                }).length) {\r\n                var video = getVideo(stream);\r\n                video.stream = stream;\r\n                videos.push(video);\r\n\r\n                newStream.addTrack(stream.getTracks().filter(function(t) {\r\n                    return t.kind === 'video';\r\n                })[0]);\r\n            }\r\n\r\n            if (stream.getTracks().filter(function(t) {\r\n                    return t.kind === 'audio';\r\n                }).length) {\r\n                var audioSource = self.audioContext.createMediaStreamSource(stream);\r\n                self.audioDestination = self.audioContext.createMediaStreamDestination();\r\n                audioSource.connect(self.audioDestination);\r\n\r\n                newStream.addTrack(self.audioDestination.stream.getTracks().filter(function(t) {\r\n                    return t.kind === 'audio';\r\n                })[0]);\r\n            }\r\n\r\n            arrayOfMediaStreams.push(newStream);\r\n        });\r\n    };\r\n\r\n    this.releaseStreams = function() {\r\n        videos = [];\r\n        isStopDrawingFrames = true;\r\n\r\n        if (self.gainNode) {\r\n            self.gainNode.disconnect();\r\n            self.gainNode = null;\r\n        }\r\n\r\n        if (self.audioSources.length) {\r\n            self.audioSources.forEach(function(source) {\r\n                source.disconnect();\r\n            });\r\n            self.audioSources = [];\r\n        }\r\n\r\n        if (self.audioDestination) {\r\n            self.audioDestination.disconnect();\r\n            self.audioDestination = null;\r\n        }\r\n\r\n        if (self.audioContext) {\r\n            self.audioContext.close();\r\n        }\r\n\r\n        self.audioContext = null;\r\n\r\n        context.clearRect(0, 0, canvas.width, canvas.height);\r\n\r\n        if (canvas.stream) {\r\n            canvas.stream.stop();\r\n            canvas.stream = null;\r\n        }\r\n    };\r\n\r\n    this.resetVideoStreams = function(streams) {\r\n        if (streams && !(streams instanceof Array)) {\r\n            streams = [streams];\r\n        }\r\n\r\n        resetVideoStreams(streams);\r\n    };\r\n\r\n    function resetVideoStreams(streams) {\r\n        videos = [];\r\n        streams = streams || arrayOfMediaStreams;\r\n\r\n        // via: @adrian-ber\r\n        streams.forEach(function(stream) {\r\n            if (!stream.getTracks().filter(function(t) {\r\n                    return t.kind === 'video';\r\n                }).length) {\r\n                return;\r\n            }\r\n\r\n            var video = getVideo(stream);\r\n            video.stream = stream;\r\n            videos.push(video);\r\n        });\r\n    }\r\n\r\n    // for debugging\r\n    this.name = 'MultiStreamsMixer';\r\n    this.toString = function() {\r\n        return this.name;\r\n    };\r\n\r\n    this.getMixedStream = getMixedStream;\r\n\r\n}\r\n\r\nif (typeof RecordRTC === 'undefined') {\r\n    if (typeof module !== 'undefined' /* && !!module.exports*/ ) {\r\n        module.exports = MultiStreamsMixer;\r\n    }\r\n\r\n    if (typeof define === 'function' && define.amd) {\r\n        define('MultiStreamsMixer', [], function() {\r\n            return MultiStreamsMixer;\r\n        });\r\n    }\r\n}\n\r\n// ______________________\r\n// MultiStreamRecorder.js\r\n\r\n/*\r\n * Video conference recording, using captureStream API along with WebAudio and Canvas2D API.\r\n */\r\n\r\n/**\r\n * MultiStreamRecorder can record multiple videos in single container.\r\n * @summary Multi-videos recorder.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef MultiStreamRecorder\r\n * @class\r\n * @example\r\n * var options = {\r\n *     mimeType: 'video/webm'\r\n * }\r\n * var recorder = new MultiStreamRecorder(ArrayOfMediaStreams, options);\r\n * recorder.record();\r\n * recorder.stop(function(blob) {\r\n *     video.src = URL.createObjectURL(blob);\r\n *\r\n *     // or\r\n *     var blob = recorder.blob;\r\n * });\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {MediaStreams} mediaStreams - Array of MediaStreams.\r\n * @param {object} config - {disableLogs:true, frameInterval: 1, mimeType: \"video/webm\"}\r\n */\r\n\r\nfunction MultiStreamRecorder(arrayOfMediaStreams, options) {\r\n    arrayOfMediaStreams = arrayOfMediaStreams || [];\r\n    var self = this;\r\n\r\n    var mixer;\r\n    var mediaRecorder;\r\n\r\n    options = options || {\r\n        elementClass: 'multi-streams-mixer',\r\n        mimeType: 'video/webm',\r\n        video: {\r\n            width: 360,\r\n            height: 240\r\n        }\r\n    };\r\n\r\n    if (!options.frameInterval) {\r\n        options.frameInterval = 10;\r\n    }\r\n\r\n    if (!options.video) {\r\n        options.video = {};\r\n    }\r\n\r\n    if (!options.video.width) {\r\n        options.video.width = 360;\r\n    }\r\n\r\n    if (!options.video.height) {\r\n        options.video.height = 240;\r\n    }\r\n\r\n    /**\r\n     * This method records all MediaStreams.\r\n     * @method\r\n     * @memberof MultiStreamRecorder\r\n     * @example\r\n     * recorder.record();\r\n     */\r\n    this.record = function() {\r\n        // github/muaz-khan/MultiStreamsMixer\r\n        mixer = new MultiStreamsMixer(arrayOfMediaStreams, options.elementClass || 'multi-streams-mixer');\r\n\r\n        if (getAllVideoTracks().length) {\r\n            mixer.frameInterval = options.frameInterval || 10;\r\n            mixer.width = options.video.width || 360;\r\n            mixer.height = options.video.height || 240;\r\n            mixer.startDrawingFrames();\r\n        }\r\n\r\n        if (options.previewStream && typeof options.previewStream === 'function') {\r\n            options.previewStream(mixer.getMixedStream());\r\n        }\r\n\r\n        // record using MediaRecorder API\r\n        mediaRecorder = new MediaStreamRecorder(mixer.getMixedStream(), options);\r\n        mediaRecorder.record();\r\n    };\r\n\r\n    function getAllVideoTracks() {\r\n        var tracks = [];\r\n        arrayOfMediaStreams.forEach(function(stream) {\r\n            getTracks(stream, 'video').forEach(function(track) {\r\n                tracks.push(track);\r\n            });\r\n        });\r\n        return tracks;\r\n    }\r\n\r\n    /**\r\n     * This method stops recording MediaStream.\r\n     * @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.\r\n     * @method\r\n     * @memberof MultiStreamRecorder\r\n     * @example\r\n     * recorder.stop(function(blob) {\r\n     *     video.src = URL.createObjectURL(blob);\r\n     * });\r\n     */\r\n    this.stop = function(callback) {\r\n        if (!mediaRecorder) {\r\n            return;\r\n        }\r\n\r\n        mediaRecorder.stop(function(blob) {\r\n            self.blob = blob;\r\n\r\n            callback(blob);\r\n\r\n            self.clearRecordedData();\r\n        });\r\n    };\r\n\r\n    /**\r\n     * This method pauses the recording process.\r\n     * @method\r\n     * @memberof MultiStreamRecorder\r\n     * @example\r\n     * recorder.pause();\r\n     */\r\n    this.pause = function() {\r\n        if (mediaRecorder) {\r\n            mediaRecorder.pause();\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method resumes the recording process.\r\n     * @method\r\n     * @memberof MultiStreamRecorder\r\n     * @example\r\n     * recorder.resume();\r\n     */\r\n    this.resume = function() {\r\n        if (mediaRecorder) {\r\n            mediaRecorder.resume();\r\n        }\r\n    };\r\n\r\n    /**\r\n     * This method resets currently recorded data.\r\n     * @method\r\n     * @memberof MultiStreamRecorder\r\n     * @example\r\n     * recorder.clearRecordedData();\r\n     */\r\n    this.clearRecordedData = function() {\r\n        if (mediaRecorder) {\r\n            mediaRecorder.clearRecordedData();\r\n            mediaRecorder = null;\r\n        }\r\n\r\n        if (mixer) {\r\n            mixer.releaseStreams();\r\n            mixer = null;\r\n        }\r\n    };\r\n\r\n    /**\r\n     * Add extra media-streams to existing recordings.\r\n     * @method\r\n     * @memberof MultiStreamRecorder\r\n     * @param {MediaStreams} mediaStreams - Array of MediaStreams\r\n     * @example\r\n     * recorder.addStreams([newAudioStream, newVideoStream]);\r\n     */\r\n    this.addStreams = function(streams) {\r\n        if (!streams) {\r\n            throw 'First parameter is required.';\r\n        }\r\n\r\n        if (!(streams instanceof Array)) {\r\n            streams = [streams];\r\n        }\r\n\r\n        arrayOfMediaStreams.concat(streams);\r\n\r\n        if (!mediaRecorder || !mixer) {\r\n            return;\r\n        }\r\n\r\n        mixer.appendStreams(streams);\r\n\r\n        if (options.previewStream && typeof options.previewStream === 'function') {\r\n            options.previewStream(mixer.getMixedStream());\r\n        }\r\n    };\r\n\r\n    /**\r\n     * Reset videos during live recording. Replace old videos e.g. replace cameras with full-screen.\r\n     * @method\r\n     * @memberof MultiStreamRecorder\r\n     * @param {MediaStreams} mediaStreams - Array of MediaStreams\r\n     * @example\r\n     * recorder.resetVideoStreams([newVideo1, newVideo2]);\r\n     */\r\n    this.resetVideoStreams = function(streams) {\r\n        if (!mixer) {\r\n            return;\r\n        }\r\n\r\n        if (streams && !(streams instanceof Array)) {\r\n            streams = [streams];\r\n        }\r\n\r\n        mixer.resetVideoStreams(streams);\r\n    };\r\n\r\n    /**\r\n     * Returns MultiStreamsMixer\r\n     * @method\r\n     * @memberof MultiStreamRecorder\r\n     * @example\r\n     * let mixer = recorder.getMixer();\r\n     * mixer.appendStreams([newStream]);\r\n     */\r\n    this.getMixer = function() {\r\n        return mixer;\r\n    };\r\n\r\n    // for debugging\r\n    this.name = 'MultiStreamRecorder';\r\n    this.toString = function() {\r\n        return this.name;\r\n    };\r\n}\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.MultiStreamRecorder = MultiStreamRecorder;\r\n}\n\r\n// _____________________\r\n// RecordRTC.promises.js\r\n\r\n/**\r\n * RecordRTCPromisesHandler adds promises support in {@link RecordRTC}. Try a {@link https://github.com/muaz-khan/RecordRTC/blob/master/simple-demos/RecordRTCPromisesHandler.html|demo here}\r\n * @summary Promises for {@link RecordRTC}\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef RecordRTCPromisesHandler\r\n * @class\r\n * @example\r\n * var recorder = new RecordRTCPromisesHandler(mediaStream, options);\r\n * recorder.startRecording()\r\n *         .then(successCB)\r\n *         .catch(errorCB);\r\n * // Note: You can access all RecordRTC API using \"recorder.recordRTC\" e.g. \r\n * recorder.recordRTC.onStateChanged = function(state) {};\r\n * recorder.recordRTC.setRecordingDuration(5000);\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {MediaStream} mediaStream - Single media-stream object, array of media-streams, html-canvas-element, etc.\r\n * @param {object} config - {type:\"video\", recorderType: MediaStreamRecorder, disableLogs: true, numberOfAudioChannels: 1, bufferSize: 0, sampleRate: 0, video: HTMLVideoElement, etc.}\r\n * @throws Will throw an error if \"new\" keyword is not used to initiate \"RecordRTCPromisesHandler\". Also throws error if first argument \"MediaStream\" is missing.\r\n * @requires {@link RecordRTC}\r\n */\r\n\r\nfunction RecordRTCPromisesHandler(mediaStream, options) {\r\n    if (!this) {\r\n        throw 'Use \"new RecordRTCPromisesHandler()\"';\r\n    }\r\n\r\n    if (typeof mediaStream === 'undefined') {\r\n        throw 'First argument \"MediaStream\" is required.';\r\n    }\r\n\r\n    var self = this;\r\n\r\n    /**\r\n     * @property {Blob} blob - Access/reach the native {@link RecordRTC} object.\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * let internal = recorder.recordRTC.getInternalRecorder();\r\n     * alert(internal instanceof MediaStreamRecorder);\r\n     * recorder.recordRTC.onStateChanged = function(state) {};\r\n     */\r\n    self.recordRTC = new RecordRTC(mediaStream, options);\r\n\r\n    /**\r\n     * This method records MediaStream.\r\n     * @method\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * recorder.startRecording()\r\n     *         .then(successCB)\r\n     *         .catch(errorCB);\r\n     */\r\n    this.startRecording = function() {\r\n        return new Promise(function(resolve, reject) {\r\n            try {\r\n                self.recordRTC.startRecording();\r\n                resolve();\r\n            } catch (e) {\r\n                reject(e);\r\n            }\r\n        });\r\n    };\r\n\r\n    /**\r\n     * This method stops the recording.\r\n     * @method\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * recorder.stopRecording().then(function() {\r\n     *     var blob = recorder.getBlob();\r\n     * }).catch(errorCB);\r\n     */\r\n    this.stopRecording = function() {\r\n        return new Promise(function(resolve, reject) {\r\n            try {\r\n                self.recordRTC.stopRecording(function(url) {\r\n                    self.blob = self.recordRTC.getBlob();\r\n\r\n                    if (!self.blob || !self.blob.size) {\r\n                        reject('Empty blob.', self.blob);\r\n                        return;\r\n                    }\r\n\r\n                    resolve(url);\r\n                });\r\n            } catch (e) {\r\n                reject(e);\r\n            }\r\n        });\r\n    };\r\n\r\n    /**\r\n     * This method pauses the recording. You can resume recording using \"resumeRecording\" method.\r\n     * @method\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * recorder.pauseRecording()\r\n     *         .then(successCB)\r\n     *         .catch(errorCB);\r\n     */\r\n    this.pauseRecording = function() {\r\n        return new Promise(function(resolve, reject) {\r\n            try {\r\n                self.recordRTC.pauseRecording();\r\n                resolve();\r\n            } catch (e) {\r\n                reject(e);\r\n            }\r\n        });\r\n    };\r\n\r\n    /**\r\n     * This method resumes the recording.\r\n     * @method\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * recorder.resumeRecording()\r\n     *         .then(successCB)\r\n     *         .catch(errorCB);\r\n     */\r\n    this.resumeRecording = function() {\r\n        return new Promise(function(resolve, reject) {\r\n            try {\r\n                self.recordRTC.resumeRecording();\r\n                resolve();\r\n            } catch (e) {\r\n                reject(e);\r\n            }\r\n        });\r\n    };\r\n\r\n    /**\r\n     * This method returns data-url for the recorded blob.\r\n     * @method\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * recorder.stopRecording().then(function() {\r\n     *     recorder.getDataURL().then(function(dataURL) {\r\n     *         window.open(dataURL);\r\n     *     }).catch(errorCB);;\r\n     * }).catch(errorCB);\r\n     */\r\n    this.getDataURL = function(callback) {\r\n        return new Promise(function(resolve, reject) {\r\n            try {\r\n                self.recordRTC.getDataURL(function(dataURL) {\r\n                    resolve(dataURL);\r\n                });\r\n            } catch (e) {\r\n                reject(e);\r\n            }\r\n        });\r\n    };\r\n\r\n    /**\r\n     * This method returns the recorded blob.\r\n     * @method\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * recorder.stopRecording().then(function() {\r\n     *     recorder.getBlob().then(function(blob) {})\r\n     * }).catch(errorCB);\r\n     */\r\n    this.getBlob = function() {\r\n        return new Promise(function(resolve, reject) {\r\n            try {\r\n                resolve(self.recordRTC.getBlob());\r\n            } catch (e) {\r\n                reject(e);\r\n            }\r\n        });\r\n    };\r\n\r\n    /**\r\n     * This method returns the internal recording object.\r\n     * @method\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * let internalRecorder = await recorder.getInternalRecorder();\r\n     * if(internalRecorder instanceof MultiStreamRecorder) {\r\n     *     internalRecorder.addStreams([newAudioStream]);\r\n     *     internalRecorder.resetVideoStreams([screenStream]);\r\n     * }\r\n     * @returns {Object} \r\n     */\r\n    this.getInternalRecorder = function() {\r\n        return new Promise(function(resolve, reject) {\r\n            try {\r\n                resolve(self.recordRTC.getInternalRecorder());\r\n            } catch (e) {\r\n                reject(e);\r\n            }\r\n        });\r\n    };\r\n\r\n    /**\r\n     * This method resets the recorder. So that you can reuse single recorder instance many times.\r\n     * @method\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * await recorder.reset();\r\n     * recorder.startRecording(); // record again\r\n     */\r\n    this.reset = function() {\r\n        return new Promise(function(resolve, reject) {\r\n            try {\r\n                resolve(self.recordRTC.reset());\r\n            } catch (e) {\r\n                reject(e);\r\n            }\r\n        });\r\n    };\r\n\r\n    /**\r\n     * Destroy RecordRTC instance. Clear all recorders and objects.\r\n     * @method\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * recorder.destroy().then(successCB).catch(errorCB);\r\n     */\r\n    this.destroy = function() {\r\n        return new Promise(function(resolve, reject) {\r\n            try {\r\n                resolve(self.recordRTC.destroy());\r\n            } catch (e) {\r\n                reject(e);\r\n            }\r\n        });\r\n    };\r\n\r\n    /**\r\n     * Get recorder's readonly state.\r\n     * @method\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * let state = await recorder.getState();\r\n     * // or\r\n     * recorder.getState().then(state => { console.log(state); })\r\n     * @returns {String} Returns recording state.\r\n     */\r\n    this.getState = function() {\r\n        return new Promise(function(resolve, reject) {\r\n            try {\r\n                resolve(self.recordRTC.getState());\r\n            } catch (e) {\r\n                reject(e);\r\n            }\r\n        });\r\n    };\r\n\r\n    /**\r\n     * @property {Blob} blob - Recorded data as \"Blob\" object.\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @example\r\n     * await recorder.stopRecording();\r\n     * let blob = recorder.getBlob(); // or \"recorder.recordRTC.blob\"\r\n     * invokeSaveAsDialog(blob);\r\n     */\r\n    this.blob = null;\r\n\r\n    /**\r\n     * RecordRTC version number\r\n     * @property {String} version - Release version number.\r\n     * @memberof RecordRTCPromisesHandler\r\n     * @static\r\n     * @readonly\r\n     * @example\r\n     * alert(recorder.version);\r\n     */\r\n    this.version = '5.6.2';\r\n}\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.RecordRTCPromisesHandler = RecordRTCPromisesHandler;\r\n}\n\r\n// ______________________\r\n// WebAssemblyRecorder.js\r\n\r\n/**\r\n * WebAssemblyRecorder lets you create webm videos in JavaScript via WebAssembly. The library consumes raw RGBA32 buffers (4 bytes per pixel) and turns them into a webm video with the given framerate and quality. This makes it compatible out-of-the-box with ImageData from a CANVAS. With realtime mode you can also use webm-wasm for streaming webm videos.\r\n * @summary Video recording feature in Chrome, Firefox and maybe Edge.\r\n * @license {@link https://github.com/muaz-khan/RecordRTC/blob/master/LICENSE|MIT}\r\n * @author {@link https://MuazKhan.com|Muaz Khan}\r\n * @typedef WebAssemblyRecorder\r\n * @class\r\n * @example\r\n * var recorder = new WebAssemblyRecorder(mediaStream);\r\n * recorder.record();\r\n * recorder.stop(function(blob) {\r\n *     video.src = URL.createObjectURL(blob);\r\n * });\r\n * @see {@link https://github.com/muaz-khan/RecordRTC|RecordRTC Source Code}\r\n * @param {MediaStream} mediaStream - MediaStream object fetched using getUserMedia API or generated using captureStreamUntilEnded or WebAudio API.\r\n * @param {object} config - {webAssemblyPath:'webm-wasm.wasm',workerPath: 'webm-worker.js', frameRate: 30, width: 1920, height: 1080, bitrate: 1024, realtime: true}\r\n */\r\nfunction WebAssemblyRecorder(stream, config) {\r\n    // based on: github.com/GoogleChromeLabs/webm-wasm\r\n\r\n    if (typeof ReadableStream === 'undefined' || typeof WritableStream === 'undefined') {\r\n        // because it fixes readable/writable streams issues\r\n        console.error('Following polyfill is strongly recommended: https://unpkg.com/@mattiasbuelens/web-streams-polyfill/dist/polyfill.min.js');\r\n    }\r\n\r\n    config = config || {};\r\n\r\n    config.width = config.width || 640;\r\n    config.height = config.height || 480;\r\n    config.frameRate = config.frameRate || 30;\r\n    config.bitrate = config.bitrate || 1200;\r\n    config.realtime = config.realtime || true;\r\n\r\n    function createBufferURL(buffer, type) {\r\n        return URL.createObjectURL(new Blob([buffer], {\r\n            type: type || ''\r\n        }));\r\n    }\r\n\r\n    var finished;\r\n\r\n    function cameraStream() {\r\n        return new ReadableStream({\r\n            start: function(controller) {\r\n                var cvs = document.createElement('canvas');\r\n                var video = document.createElement('video');\r\n                var first = true;\r\n                video.srcObject = stream;\r\n                video.muted = true;\r\n                video.height = config.height;\r\n                video.width = config.width;\r\n                video.volume = 0;\r\n                video.onplaying = function() {\r\n                    cvs.width = config.width;\r\n                    cvs.height = config.height;\r\n                    var ctx = cvs.getContext('2d');\r\n                    var frameTimeout = 1000 / config.frameRate;\r\n                    var cameraTimer = setInterval(function f() {\r\n                        if (finished) {\r\n                            clearInterval(cameraTimer);\r\n                            controller.close();\r\n                        }\r\n\r\n                        if (first) {\r\n                            first = false;\r\n                            if (config.onVideoProcessStarted) {\r\n                                config.onVideoProcessStarted();\r\n                            }\r\n                        }\r\n\r\n                        ctx.drawImage(video, 0, 0);\r\n                        if (controller._controlledReadableStream.state !== 'closed') {\r\n                            try {\r\n                                controller.enqueue(\r\n                                    ctx.getImageData(0, 0, config.width, config.height)\r\n                                );\r\n                            } catch (e) {}\r\n                        }\r\n                    }, frameTimeout);\r\n                };\r\n                video.play();\r\n            }\r\n        });\r\n    }\r\n\r\n    var worker;\r\n\r\n    function startRecording(stream, buffer) {\r\n        if (!config.workerPath && !buffer) {\r\n            finished = false;\r\n\r\n            // is it safe to use @latest ?\r\n\r\n            fetch(\r\n                'https://unpkg.com/webm-wasm@latest/dist/webm-worker.js'\r\n            ).then(function(r) {\r\n                r.arrayBuffer().then(function(buffer) {\r\n                    startRecording(stream, buffer);\r\n                });\r\n            });\r\n            return;\r\n        }\r\n\r\n        if (!config.workerPath && buffer instanceof ArrayBuffer) {\r\n            var blob = new Blob([buffer], {\r\n                type: 'text/javascript'\r\n            });\r\n            config.workerPath = URL.createObjectURL(blob);\r\n        }\r\n\r\n        if (!config.workerPath) {\r\n            console.error('workerPath parameter is missing.');\r\n        }\r\n\r\n        worker = new Worker(config.workerPath);\r\n\r\n        worker.postMessage(config.webAssemblyPath || 'https://unpkg.com/webm-wasm@latest/dist/webm-wasm.wasm');\r\n        worker.addEventListener('message', function(event) {\r\n            if (event.data === 'READY') {\r\n                worker.postMessage({\r\n                    width: config.width,\r\n                    height: config.height,\r\n                    bitrate: config.bitrate || 1200,\r\n                    timebaseDen: config.frameRate || 30,\r\n                    realtime: config.realtime\r\n                });\r\n\r\n                cameraStream().pipeTo(new WritableStream({\r\n                    write: function(image) {\r\n                        if (finished) {\r\n                            console.error('Got image, but recorder is finished!');\r\n                            return;\r\n                        }\r\n\r\n                        worker.postMessage(image.data.buffer, [image.data.buffer]);\r\n                    }\r\n                }));\r\n            } else if (!!event.data) {\r\n                if (!isPaused) {\r\n                    arrayOfBuffers.push(event.data);\r\n                }\r\n            }\r\n        });\r\n    }\r\n\r\n    /**\r\n     * This method records video.\r\n     * @method\r\n     * @memberof WebAssemblyRecorder\r\n     * @example\r\n     * recorder.record();\r\n     */\r\n    this.record = function() {\r\n        arrayOfBuffers = [];\r\n        isPaused = false;\r\n        this.blob = null;\r\n        startRecording(stream);\r\n\r\n        if (typeof config.initCallback === 'function') {\r\n            config.initCallback();\r\n        }\r\n    };\r\n\r\n    var isPaused;\r\n\r\n    /**\r\n     * This method pauses the recording process.\r\n     * @method\r\n     * @memberof WebAssemblyRecorder\r\n     * @example\r\n     * recorder.pause();\r\n     */\r\n    this.pause = function() {\r\n        isPaused = true;\r\n    };\r\n\r\n    /**\r\n     * This method resumes the recording process.\r\n     * @method\r\n     * @memberof WebAssemblyRecorder\r\n     * @example\r\n     * recorder.resume();\r\n     */\r\n    this.resume = function() {\r\n        isPaused = false;\r\n    };\r\n\r\n    function terminate(callback) {\r\n        if (!worker) {\r\n            if (callback) {\r\n                callback();\r\n            }\r\n\r\n            return;\r\n        }\r\n\r\n        // Wait for null event data to indicate that the encoding is complete\r\n        worker.addEventListener('message', function(event) {\r\n            if (event.data === null) {\r\n                worker.terminate();\r\n                worker = null;\r\n\r\n                if (callback) {\r\n                    callback();\r\n                }\r\n            }\r\n        });\r\n\r\n        worker.postMessage(null);\r\n    }\r\n\r\n    var arrayOfBuffers = [];\r\n\r\n    /**\r\n     * This method stops recording video.\r\n     * @param {function} callback - Callback function, that is used to pass recorded blob back to the callee.\r\n     * @method\r\n     * @memberof WebAssemblyRecorder\r\n     * @example\r\n     * recorder.stop(function(blob) {\r\n     *     video.src = URL.createObjectURL(blob);\r\n     * });\r\n     */\r\n    this.stop = function(callback) {\r\n        finished = true;\r\n\r\n        var recorder = this;\r\n\r\n        terminate(function() {\r\n            recorder.blob = new Blob(arrayOfBuffers, {\r\n                type: 'video/webm'\r\n            });\r\n\r\n            callback(recorder.blob);\r\n        });\r\n    };\r\n\r\n    // for debugging\r\n    this.name = 'WebAssemblyRecorder';\r\n    this.toString = function() {\r\n        return this.name;\r\n    };\r\n\r\n    /**\r\n     * This method resets currently recorded data.\r\n     * @method\r\n     * @memberof WebAssemblyRecorder\r\n     * @example\r\n     * recorder.clearRecordedData();\r\n     */\r\n    this.clearRecordedData = function() {\r\n        arrayOfBuffers = [];\r\n        isPaused = false;\r\n        this.blob = null;\r\n\r\n        // todo: if recording-ON then STOP it first\r\n    };\r\n\r\n    /**\r\n     * @property {Blob} blob - The recorded blob object.\r\n     * @memberof WebAssemblyRecorder\r\n     * @example\r\n     * recorder.stop(function(){\r\n     *     var blob = recorder.blob;\r\n     * });\r\n     */\r\n    this.blob = null;\r\n}\r\n\r\nif (typeof RecordRTC !== 'undefined') {\r\n    RecordRTC.WebAssemblyRecorder = WebAssemblyRecorder;\r\n}\n","module.exports = \"<svg viewBox=\\\"0 0 16 16\\\" xmlns=\\\"http://www.w3.org/2000/svg\\\"><g><path d=\\\"M11,3.4C11,2.1,9.9,1,8.6,1H8.4C7.1,1,6,2.1,6,3.4V5h5V3.4z\\\"></path><path d=\\\"M8.4,10h0.3C9.9,10,11,8.9,11,7.6V6H6v1.6C6,8.9,7.1,10,8.4,10z\\\"></path><path d=\\\"M12,6v0.9c0,2.2-1.6,4.1-3.5,4.1S5,9.1,5,6.9V6H4v1c0,2.5,1.8,4.6,4,4.9V14H6v1h5v-1H9v-2.1 c2.2-0.3,4-2.4,4-4.9V6H12z\\\"></path></g></svg>\"","var g;\n\n// This works in non-strict mode\ng = (function() {\n\treturn this;\n})();\n\ntry {\n\t// This works if eval is allowed (see CSP)\n\tg = g || new Function(\"return this\")();\n} catch (e) {\n\t// This works if the window reference is available\n\tif (typeof window === \"object\") g = window;\n}\n\n// g can still be undefined, but nothing to do about it...\n// We return undefined, instead of nothing here, so it's\n// easier to handle this case. if(!global) { ...}\n\nmodule.exports = g;\n","import RecordRTC from \"recordrtc\";\n\nfunction init(Survey) {\n  const iconId = \"icon-microphone\";\n  Survey.SvgRegistry && Survey.SvgRegistry.registerIconFromSvg(iconId, require('svg-inline-loader?classPrefix!./images/microphone.svg'), \"\");\n  var widget = {\n    name: \"microphone\",\n    title: \"Microphone\",\n    iconName: iconId,\n    widgetIsLoaded: function() {\n      return typeof RecordRTC != \"undefined\";\n    },\n    isFit: function(question) {\n      return question.getType() === \"microphone\";\n    },\n    htmlTemplate:\n      \"<div style='height: 39px'>\" +\n      \"<button type='button'  title='Record' style='vertical-align: top; margin-top: 3px' ><i class='fa fa-microphone' aria-hidden='true'></i></button>\" +\n      \"&nbsp;<button type='button' title='Save' style='vertical-align: top; margin-top: 3px'><i class='fa fa-cloud' aria-hidden='true' ></i></button>\" +\n      \"&nbsp;<audio style='\" +\n      \"vertical-align: top;\" +\n      \"margin-left: 10px;\" +\n      \"height:35px;\" +\n      \"-moz-box-shadow: 2px 2px 4px 0px #006773;\" +\n      \"-webkit-box-shadow:  2px 2px 4px 0px #006773;\" +\n      \"box-shadow: 2px 2px 4px 0px #006773;\" +\n      \"' \" +\n      \"controls='true' >\" +\n      \"</audio>\" +\n      \"</div>\",\n    activatedByChanged: function(activatedBy) {\n      Survey.JsonObject.metaData.addClass(\"microphone\", [], null, \"empty\");\n    },\n\n    afterRender: function(question, el) {\n      var rootWidget = this;\n      var buttonStartEl = el.getElementsByTagName(\"button\")[0];\n      var buttonStopEl = el.getElementsByTagName(\"button\")[1];\n      var audioEl = el.getElementsByTagName(\"audio\")[0];\n\n      //////////  RecordRTC logic\n\n      var successCallback = function(stream) {\n        var options = {\n          type: \"audio\",\n          mimeType: \"audio/webm\",\n          audioBitsPerSecond: 44100,\n          sampleRate: 44100,\n          bufferSize: 16384,\n          numberOfAudioChannels: 1\n        };\n        console.log(\"successCallback\");\n        question.survey.mystream = stream;\n        question.survey.recordRTC = RecordRTC(\n          question.survey.mystream,\n          options\n        );\n        if (typeof question.survey.recordRTC != \"undefined\") {\n          console.log(\"startRecording\");\n          question.survey.recordRTC.startRecording();\n        }\n      };\n\n      var errorCallback = function() {\n        alert(\"No microphone\");\n        question.survey.recordRTC = undefined;\n        question.survey.mystream = undefined;\n      };\n\n      var processAudio = function(audioVideoWebMURL) {\n        console.log(\"processAudio\");\n        var recordedBlob = question.survey.recordRTC.getBlob();\n\n        var fileReader = new FileReader();\n        fileReader.onload = function(event) {\n          var dataUri = event.target.result;\n          console.log(\"dataUri: \" + dataUri);\n          question.value = dataUri;\n          audioEl.src = dataUri;\n\n          console.log(\"cleaning\");\n          question.survey.recordRTC = undefined;\n          question.survey.mystream = undefined;\n        };\n        fileReader.readAsDataURL(recordedBlob);\n      };\n\n      var startRecording = function() {\n        // erase previous data\n        question.value = undefined;\n\n        // if recorder open on another question\t- try to stop recording\n        if (typeof question.survey.recordRTC != \"undefined\") {\n          question.survey.recordRTC.stopRecording(doNothingHandler);\n          if (typeof question.survey.mystream != \"undefined\") {\n            question.survey.mystream.getAudioTracks().forEach(function(track) {\n              track.stop();\n            });\n          }\n        }\n\n        var mediaConstraints = {\n          video: false,\n          audio: true\n        };\n\n        navigator.mediaDevices\n          .getUserMedia(mediaConstraints)\n          .then(successCallback.bind(this), errorCallback.bind(this));\n      };\n\n      var stopRecording = function() {\n        console.log(\"stopRecording\");\n        if (typeof question.survey.recordRTC != \"undefined\") {\n          question.survey.recordRTC.stopRecording(processAudio.bind(this));\n          if (typeof question.survey.mystream != \"undefined\") {\n            question.survey.mystream.getAudioTracks().forEach(function(track) {\n              track.stop();\n            });\n          }\n        }\n      };\n\n      //////////////  end RTC logic //////////////////\n\n      if (!question.isReadOnly) {\n        buttonStartEl.onclick = startRecording;\n      } else {\n        buttonStartEl.parentNode.removeChild(buttonStartEl);\n      }\n\n      if (!question.isReadOnly) {\n        buttonStopEl.onclick = stopRecording;\n      } else {\n        buttonStopEl.parentNode.removeChild(buttonStopEl);\n      }\n\n      audioEl.src = question.value;\n\n      var updateValueHandler = function() {};\n\n      var doNothingHandler = function() {};\n\n      question.valueChangedCallback = updateValueHandler;\n      updateValueHandler();\n    },\n    willUnmount: function(question, el) {\n      console.log(\"unmount microphone no record \");\n      if (typeof question.survey.recordRTC != \"undefined\") {\n        question.survey.recordRTC.stopRecording(doNothingHandler);\n        if (typeof question.survey.mystream != \"undefined\") {\n          question.survey.mystream.getAudioTracks().forEach(function(track) {\n            track.stop();\n          });\n        }\n        question.value = undefined;\n        question.survey.recordRTC = undefined;\n        question.survey.mystream = undefined;\n      }\n    }\n  };\n\n  Survey.CustomWidgetCollection.Instance.addCustomWidget(widget, \"customtype\");\n}\n\nif (typeof Survey !== \"undefined\") {\n  init(Survey);\n}\n\nexport default init;\n"],"sourceRoot":""}