ComunicWeb/assets/3rdparty/MediaStreamRecorder.min.js

'use strict';

// Last time updated: 2017-08-31 4:03:23 AM UTC

// __________________________
// MediaStreamRecorder v1.3.4

// Open-Sourced: https://github.com/streamproc/MediaStreamRecorder

// --------------------------------------------------
// Muaz Khan     - www.MuazKhan.com
// MIT License   - www.WebRTC-Experiment.com/licence
// --------------------------------------------------

"use strict";function MediaStreamRecorder(mediaStream){if(!mediaStream)throw"MediaStream is mandatory.";this.start=function(timeSlice){var Recorder;"undefined"!=typeof MediaRecorder?Recorder=MediaRecorderWrapper:(IsChrome||IsOpera||IsEdge)&&(this.mimeType.indexOf("video")!==-1?Recorder=WhammyRecorder:this.mimeType.indexOf("audio")!==-1&&(Recorder=StereoAudioRecorder)),"image/gif"===this.mimeType&&(Recorder=GifRecorder),"audio/wav"!==this.mimeType&&"audio/pcm"!==this.mimeType||(Recorder=StereoAudioRecorder),this.recorderType&&(Recorder=this.recorderType),mediaRecorder=new Recorder(mediaStream),mediaRecorder.blobs=[];var self=this;mediaRecorder.ondataavailable=function(data){mediaRecorder.blobs.push(data),self.ondataavailable(data)},mediaRecorder.onstop=this.onstop,mediaRecorder.onStartedDrawingNonBlankFrames=this.onStartedDrawingNonBlankFrames,mediaRecorder=mergeProps(mediaRecorder,this),mediaRecorder.start(timeSlice)},this.onStartedDrawingNonBlankFrames=function(){},this.clearOldRecordedFrames=function(){mediaRecorder&&mediaRecorder.clearOldRecordedFrames()},this.stop=function(){mediaRecorder&&mediaRecorder.stop()},this.ondataavailable=function(blob){this.disableLogs||console.log("ondataavailable..",blob)},this.onstop=function(error){console.warn("stopped..",error)},this.save=function(file,fileName){if(!file){if(!mediaRecorder)return;return void ConcatenateBlobs(mediaRecorder.blobs,mediaRecorder.blobs[0].type,function(concatenatedBlob){invokeSaveAsDialog(concatenatedBlob)})}invokeSaveAsDialog(file,fileName)},this.pause=function(){mediaRecorder&&(mediaRecorder.pause(),this.disableLogs||console.log("Paused recording.",this.mimeType||mediaRecorder.mimeType))},this.resume=function(){mediaRecorder&&(mediaRecorder.resume(),this.disableLogs||console.log("Resumed recording.",this.mimeType||mediaRecorder.mimeType))},this.recorderType=null,this.mimeType="video/webm",this.disableLogs=!1;var mediaRecorder}function MultiStreamRecorder(arrayOfMediaStreams,options){function getVideoTracks(){var tracks=[];return arrayOfMediaStreams.forEach(function(stream){stream.getVideoTracks().forEach(function(track){tracks.push(track)})}),tracks}arrayOfMediaStreams=arrayOfMediaStreams||[],arrayOfMediaStreams instanceof MediaStream&&(arrayOfMediaStreams=[arrayOfMediaStreams]);var mixer,mediaRecorder,self=this;options=options||{mimeType:"video/webm",video:{width:360,height:240}},options.frameInterval||(options.frameInterval=10),options.video||(options.video={}),options.video.width||(options.video.width=360),options.video.height||(options.video.height=240),this.start=function(timeSlice){mixer=new MultiStreamsMixer(arrayOfMediaStreams),getVideoTracks().length&&(mixer.frameInterval=options.frameInterval||10,mixer.width=options.video.width||360,mixer.height=options.video.height||240,mixer.startDrawingFrames()),"function"==typeof self.previewStream&&self.previewStream(mixer.getMixedStream()),mediaRecorder=new MediaStreamRecorder(mixer.getMixedStream());for(var prop in self)"function"!=typeof self[prop]&&(mediaRecorder[prop]=self[prop]);mediaRecorder.ondataavailable=function(blob){self.ondataavailable(blob)},mediaRecorder.onstop=self.onstop,mediaRecorder.start(timeSlice)},this.stop=function(callback){mediaRecorder&&mediaRecorder.stop(function(blob){callback(blob)})},this.pause=function(){mediaRecorder&&mediaRecorder.pause()},this.resume=function(){mediaRecorder&&mediaRecorder.resume()},this.clearRecordedData=function(){mediaRecorder&&(mediaRecorder.clearRecordedData(),mediaRecorder=null),mixer&&(mixer.releaseStreams(),mixer=null)},this.addStreams=this.addStream=function(streams){if(!streams)throw"First parameter is required.";streams instanceof Array||(streams=[streams]),arrayOfMediaStreams.concat(streams),mediaRecorder&&mixer&&mixer.appendStreams(streams)},this.resetVideoStreams=function(streams){mixer&&(!streams||streams instanceof Array||(streams=[streams]),mixer.resetVideoStreams(streams))},this.ondataavailable=function(blob){self.disableLogs||console.log("ondataavailable",blob)},this.onstop=function(){},this.name="MultiStreamRecorder",this.toString=fu
};var IsEdge=!(navigator.userAgent.indexOf("Edge")===-1||!navigator.msSaveBlob&&!navigator.msSaveOrOpenBlob),IsOpera=!1;"undefined"!=typeof opera&&navigator.userAgent&&navigator.userAgent.indexOf("OPR/")!==-1&&(IsOpera=!0);var IsChrome=!IsEdge&&!IsEdge&&!!navigator.webkitGetUserMedia,MediaStream=window.MediaStream;"undefined"==typeof MediaStream&&"undefined"!=typeof webkitMediaStream&&(MediaStream=webkitMediaStream),"undefined"!=typeof MediaStream&&("getVideoTracks"in MediaStream.prototype||(MediaStream.prototype.getVideoTracks=function(){if(!this.getTracks)return[];var tracks=[];return this.getTracks.forEach(function(track){track.kind.toString().indexOf("video")!==-1&&tracks.push(track)}),tracks},MediaStream.prototype.getAudioTracks=function(){if(!this.getTracks)return[];var tracks=[];return this.getTracks.forEach(function(track){track.kind.toString().indexOf("audio")!==-1&&tracks.push(track)}),tracks}),"stop"in MediaStream.prototype||(MediaStream.prototype.stop=function(){this.getAudioTracks().forEach(function(track){track.stop&&track.stop()}),this.getVideoTracks().forEach(function(track){track.stop&&track.stop()})})),"undefined"!=typeof location&&0===location.href.indexOf("file:")&&console.error("Please load this HTML file on HTTP or HTTPS.");var ObjectStore={AudioContext:AudioContext};"undefined"!=typeof MediaStreamRecorder&&(MediaStreamRecorder.MediaRecorderWrapper=MediaRecorderWrapper),"undefined"!=typeof MediaStreamRecorder&&(MediaStreamRecorder.StereoAudioRecorder=StereoAudioRecorder),"undefined"!=typeof MediaStreamRecorder&&(MediaStreamRecorder.StereoAudioRecorderHelper=StereoAudioRecorderHelper),"undefined"!=typeof MediaStreamRecorder&&(MediaStreamRecorder.WhammyRecorder=WhammyRecorder),"undefined"!=typeof MediaStreamRecorder&&(MediaStreamRecorder.WhammyRecorderHelper=WhammyRecorderHelper),"undefined"!=typeof MediaStreamRecorder&&(MediaStreamRecorder.GifRecorder=GifRecorder);var Whammy=function(){function WhammyVideo(duration,quality){this.frames=[],duration||(duration=1),this.duration=1e3/duration,this.quality=quality||.8}function processInWebWorker(_function){var blob=URL.createObjectURL(new Blob([_function.toString(),"this.onmessage =  function (e) {"+_function.name+"(e.data);}"],{type:"application/javascript"})),worker=new Worker(blob);return URL.revokeObjectURL(blob),worker}function whammyInWebWorker(frames){function ArrayToWebM(frames){var info=checkFrames(frames);if(!info)return[];for(var clusterMaxDuration=3e4,EBML=[{id:440786851,data:[{data:1,id:17030},{data:1,id:17143},{data:4,id:17138},{data:8,id:17139},{data:"webm",id:17026},{data:2,id:17031},{data:2,id:17029}]},{id:408125543,data:[{id:357149030,data:[{data:1e6,id:2807729},{data:"whammy",id:19840},{data:"whammy",id:22337},{data:doubleToString(info.duration),id:17545}]},{id:374648427,data:[{id:174,data:[{data:1,id:215},{data:1,id:29637},{data:0,id:156},{data:"und",id:2274716},{data:"V_VP8",id:134},{data:"VP8",id:2459272},{data:1,id:131},{id:224,data:[{data:info.width,id:176},{data:info.height,id:186}]}]}]}]}],frameNumber=0,clusterTimecode=0;frameNumber<frames.length;){var clusterFrames=[],clusterDuration=0;do clusterFrames.push(frames[frameNumber]),clusterDuration+=frames[frameNumber].duration,frameNumber++;while(frameNumber<frames.length&&clusterDuration<clusterMaxDuration);var clusterCounter=0,cluster={id:524531317,data:getClusterData(clusterTimecode,clusterCounter,clusterFrames)};EBML[1].data.push(cluster),clusterTimecode+=clusterDuration}return generateEBML(EBML)}function getClusterData(clusterTimecode,clusterCounter,clusterFrames){return[{data:clusterTimecode,id:231}].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)});return clusterCounter+=webp.duration,{data:block,id:163}}))}function checkFrames(frames){if(!frames[0])return void postMessage({error:"Something went wrong. Maybe WebP format is not supported in the current browser."});for(var width=frames[0].width,height=frames[0].height,duration=frames[0].durati