├── setup.sh ├── static ├── js │ ├── script.js │ └── jsmpeg.min.js └── css │ └── style.css ├── index.html ├── package.json ├── .gitignore ├── README.md ├── server.js └── camera └── index.js /setup.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | cd "$(dirname "$0")" 4 | 5 | [[ "$(whoami)" != "root" ]] && echo "Please run script as root or sudo." && exit 6 | 7 | curl -sL https://deb.nodesource.com/setup_6.x | bash - 8 | 9 | apt-get upgrade -y -q 10 | apt-get install git nodejs libav-tools -y 11 | 12 | npm install -------------------------------------------------------------------------------- /static/js/script.js: -------------------------------------------------------------------------------- 1 | var url = "ws://" + document.location.hostname; 2 | 3 | // MPEG Stream (https://github.com/phoboslab/jsmpeg) 4 | var mpegCanvas = document.getElementById("mpeg-stream"); 5 | var mpegPlayer = new JSMpeg.Player(url + ":8084", { 6 | canvas: mpegCanvas, 7 | loop: false, 8 | autoplay: true, 9 | audio: false, 10 | pauseWhenHidden: false, 11 | progressive: false 12 | }); -------------------------------------------------------------------------------- /static/css/style.css: -------------------------------------------------------------------------------- 1 | body, 2 | html { 3 | position: relative; 4 | overflow: hidden; 5 | margin: 0; 6 | background: #333; 7 | color: #fff; 8 | } 9 | 10 | canvas { 11 | position: fixed; 12 | top: 50%; 13 | left: 50%; 14 | transform: translate(-50%, -50%); 15 | height: 100%; 16 | width: auto; 17 | } 18 | @media all and (min-aspect-ratio: 4/3) { 19 | canvas { 20 | width: 100%; 21 | height: auto; 22 | } 23 | } -------------------------------------------------------------------------------- /index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | Raspberry Pi MPEG Transport Stream 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "rpi-mpeg-ts", 3 | "version": "1.0.0", 4 | "description": "Raspberry Pi MPEG Transport Stream", 5 | "main": "server.js", 6 | "scripts": { 7 | "start": "node server.js" 8 | }, 9 | "repository": { 10 | "type": "git", 11 | "url": "git+https://github.com/WebMaestroFr/rpi-mpeg-ts.git" 12 | }, 13 | "author": "etienne@webmaestro.fr", 14 | "license": "UNLICENSED", 15 | "bugs": { 16 | "url": "https://github.com/WebMaestroFr/rpi-mpeg-ts/issues" 17 | }, 18 | "homepage": "https://github.com/WebMaestroFr/rpi-mpeg-ts#readme", 19 | "dependencies": { 20 | "express": "^4.14.1", 21 | "ws": "^7.4.6" 22 | } 23 | } 24 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Logs 2 | logs 3 | *.log 4 | npm-debug.log* 5 | 6 | # Runtime data 7 | pids 8 | *.pid 9 | *.seed 10 | 11 | # Directory for instrumented libs generated by jscoverage/JSCover 12 | lib-cov 13 | 14 | # Coverage directory used by tools like istanbul 15 | coverage 16 | 17 | # nyc test coverage 18 | .nyc_output 19 | 20 | # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files) 21 | .grunt 22 | 23 | # node-waf configuration 24 | .lock-wscript 25 | 26 | # Compiled binary addons (http://nodejs.org/api/addons.html) 27 | build/Release 28 | 29 | # Dependency directories 30 | node_modules 31 | jspm_packages 32 | 33 | # Optional npm cache directory 34 | .npm 35 | 36 | # Optional REPL history 37 | .node_repl_history 38 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Raspberry Pi MPEG Transport Stream 2 | 3 | Capture Raspberry Pi Camera output, convert and stream video, decode and play in browser. 4 | 5 | Express, WebSockets, [`raspivid`](https://www.raspberrypi.org/documentation/raspbian/applications/camera.md), [`avconv`](https://libav.org/documentation/avconv.html) and [JSMpeg](https://github.com/phoboslab/jsmpeg). 6 | 7 | ## Requirements 8 | 9 | - Raspberry Pi [running Raspbian](https://www.raspberrypi.org/documentation/installation/installing-images/README.md) and [connected to your local network](https://www.raspberrypi.org/documentation/configuration/wireless/wireless-cli.md). 10 | - [Camera enabled](https://www.raspberrypi.org/documentation/configuration/camera.md). 11 | 12 | ## Installation 13 | 14 | ```bash 15 | curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash - 16 | sudo apt-get upgrade -y -q 17 | sudo apt-get install git nodejs libav-tools -y 18 | 19 | git clone https://github.com/WebMaestroFr/rpi-mpeg-ts.git 20 | cd rpi-mpeg-ts 21 | npm install 22 | ``` 23 | 24 | ## Start Capture 25 | 26 | ```bash 27 | npm start 28 | ``` 29 | The video stream is then ready to play on [port 8080](http://raspberrypi.local:8080/). 30 | 31 | 32 | ## Server-Side Module 33 | 34 | The `./camera` module is converting the *h264* capture into a `mpeg` stream. 35 | 36 | ```javascript 37 | var Camera = require("./camera"); 38 | var camera = new Camera({width: 640, height: 480, vflip: true}); 39 | 40 | var mpegStream = camera.stream("mpeg", mpegSocket.broadcast); 41 | ``` -------------------------------------------------------------------------------- /server.js: -------------------------------------------------------------------------------- 1 | // Camera 2 | var Camera = require("./camera"); 3 | var camera = new Camera({verbose: true, hflip: true, vflip: true}); 4 | 5 | // Path 6 | var path = require("path"); 7 | 8 | // Application 9 | var express = require("express"); 10 | var app = express(); 11 | 12 | // Static Files 13 | app.use("/", express.static(path.join(__dirname, "static"))); 14 | 15 | // Index 16 | app.get("/", function(req, res) { 17 | "use strict"; 18 | var index = path.join(__dirname, "index.html"); 19 | res.sendFile(index); 20 | }); 21 | 22 | // HTTP Server 23 | var server = require("http").Server(app); 24 | server.listen({"port": 8080}); 25 | 26 | // WebSockets 27 | var WebSocket = require("ws"); 28 | 29 | // MPEG Transport Stream 30 | var mpegSocket = new WebSocket.Server({port: 8084}); 31 | mpegSocket.broadcast = function(data) { 32 | mpegSocket 33 | .clients 34 | .forEach(function(client) { 35 | if (client.readyState === WebSocket.OPEN) { 36 | client.send(data); 37 | } 38 | }); 39 | }; 40 | var mpegStream = camera.stream("mpeg", mpegSocket.broadcast); 41 | mpegSocket.on("connection", function(client) { 42 | console.log("\nWebSocket Connection", mpegSocket.clients.size); 43 | if (1 === mpegSocket.clients.size) { 44 | mpegStream.start(); 45 | console.log("\nOpen MPEG Stream"); 46 | } 47 | client 48 | .on("close", function() { 49 | if (0 === mpegSocket.clients.size) { 50 | mpegStream.stop(); 51 | console.log("\nClose MPEG Stream"); 52 | } 53 | }); 54 | }); -------------------------------------------------------------------------------- /camera/index.js: -------------------------------------------------------------------------------- 1 | var spawn = require("child_process").spawn; 2 | 3 | var Camera = function(options) { 4 | 5 | // Capture options (https://www.raspberrypi.org/documentation/raspbian/applications/camera.md) 6 | Camera.options = Object.assign({ 7 | nopreview: true, 8 | inline: true, 9 | timeout: 0, 10 | width: 640, 11 | height: 480, 12 | framerate: 30 13 | }, options || {}, {output: "-"}); 14 | 15 | var args = []; 16 | // Command arguments 17 | Object 18 | .keys(Camera.options) 19 | .forEach(function(opt) { 20 | if (Camera.options[opt] || Camera.options[opt] === 0) { 21 | args.push("--" + opt); 22 | if (true !== Camera.options[opt]) { 23 | args.push(Camera.options[opt]); 24 | } 25 | } 26 | }); 27 | 28 | // Capture 29 | var raspivid = spawn("raspivid", args, { 30 | stdio: ["ignore", "pipe", "inherit"] 31 | }); 32 | 33 | // H264 stream 34 | Camera.source = raspivid.stdout; 35 | 36 | // Converters 37 | Camera._formats = new Map(); 38 | }; 39 | 40 | Camera.prototype.stream = function(format, cb) { 41 | 42 | var argsOut; 43 | // Output options (https://libav.org/documentation/avconv.html#Options-1) 44 | switch (format) { 45 | 46 | case "mpeg": 47 | // Video 48 | argsOut = [ 49 | "-f", 50 | "mpegts", 51 | "-codec:v", 52 | "mpeg1video", 53 | "-r", 54 | 24, 55 | "-b:v", 56 | 1024 * 1024, 57 | "-bf", 58 | "0", 59 | "-qmin", 60 | "3" 61 | ]; 62 | break; 63 | 64 | case "image": 65 | // Frame by frame 66 | argsOut = [ 67 | "-f", 68 | "image2pipe", 69 | "-r", 70 | 6, 71 | "-q:v", 72 | "1" 73 | ]; 74 | break; 75 | 76 | default: 77 | // Custom 78 | argsOut = format; 79 | } 80 | 81 | if (Camera._formats.has(argsOut)) { 82 | // Process duplicate 83 | return Camera 84 | ._formats 85 | .get(argsOut); 86 | } 87 | 88 | var argsIn = [ 89 | "-fflags", "nobuffer", "-probesize", 128 * 1024, 90 | "-f", 91 | "h264", 92 | "-r", 93 | Camera.options.framerate, 94 | "-i", 95 | "-", 96 | "-an" 97 | ]; 98 | // Command arguments 99 | var args = argsIn.concat(argsOut, ["-"]); 100 | // Converter 101 | var avconv = spawn("avconv", args, { 102 | stdio: ["pipe", "pipe", "inherit"] 103 | }); 104 | avconv 105 | .stdout 106 | .on("error", function(err) { 107 | console.log(err); 108 | }); 109 | 110 | if (cb) { 111 | // Callback 112 | avconv 113 | .stdout 114 | .on("data", cb); 115 | } 116 | 117 | // Controller 118 | var stream = { 119 | start: function() { 120 | Camera 121 | .source 122 | .pipe(avconv.stdin); 123 | return avconv; 124 | }, 125 | stop: function() { 126 | Camera 127 | .source 128 | .unpipe(avconv.stdin); 129 | } 130 | } 131 | Camera 132 | ._formats 133 | .set(argsOut, stream); 134 | return stream; 135 | } 136 | 137 | module.exports = Camera; -------------------------------------------------------------------------------- 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garbage data. Skipping.");this.bits.skip(187<<3);return false};TS.prototype.packetStart=function(pi,pts,payloadLength){pi.totalLength=payloadLength;pi.currentLength=0;pi.pts=pts};TS.prototype.packetAddData=function(pi,start,end){pi.buffers.push(this.bits.bytes.subarray(start,end));pi.currentLength+=end-start;var complete=pi.totalLength!==0&&pi.currentLength>=pi.totalLength;return complete};TS.prototype.packetComplete=function(pi){pi.destination.write(pi.pts,pi.buffers);pi.totalLength=0;pi.currentLength=0;pi.buffers=[]};TS.STREAM={PACK_HEADER:186,SYSTEM_HEADER:187,PROGRAM_MAP:188,PRIVATE_1:189,PADDING:190,PRIVATE_2:191,AUDIO_1:192,VIDEO_1:224,DIRECTORY:255};return TS}();JSMpeg.Decoder.Base=function(){"use strict";var BaseDecoder=function(options){this.destination=null;this.canPlay=false;this.collectTimestamps=!options.streaming;this.timestamps=[];this.timestampIndex=0;this.startTime=0;this.decodedTime=0;Object.defineProperty(this,"currentTime",{get:this.getCurrentTime})};BaseDecoder.prototype.connect=function(destination){this.destination=destination};BaseDecoder.prototype.write=function(pts,buffers){if(this.collectTimestamps){if(this.timestamps.length===0){this.startTime=pts;this.decodedTime=pts}this.timestamps.push({index:this.bits.byteLength<<3,time:pts})}this.bits.write(buffers);this.canPlay=true};BaseDecoder.prototype.seek=function(time){if(!this.collectTimestamps){return}this.timestampIndex=0;for(var i=0;itime){break}this.timestampIndex=i}var ts=this.timestamps[this.timestampIndex];if(ts){this.bits.index=ts.index;this.decodedTime=ts.time}else{this.bits.index=0;this.decodedTime=this.startTime}};BaseDecoder.prototype.decode=function(){this.advanceDecodedTime(0)};BaseDecoder.prototype.advanceDecodedTime=function(seconds){if(this.collectTimestamps){var newTimestampIndex=-1;for(var i=this.timestampIndex;ithis.bits.index){break}newTimestampIndex=i}if(newTimestampIndex!==-1&&newTimestampIndex!==this.timestampIndex){this.timestampIndex=newTimestampIndex;this.decodedTime=this.timestamps[this.timestampIndex].time;return}}this.decodedTime+=seconds};BaseDecoder.prototype.getCurrentTime=function(){return this.decodedTime};return BaseDecoder}();JSMpeg.Decoder.MPEG1Video=function(){"use strict";var MPEG1=function(options){JSMpeg.Decoder.Base.call(this,options);var bufferSize=options.videoBufferSize||512*1024;var bufferMode=options.streaming?JSMpeg.BitBuffer.MODE.EVICT:JSMpeg.BitBuffer.MODE.EXPAND;this.bits=new JSMpeg.BitBuffer(bufferSize,bufferMode);this.customIntraQuantMatrix=new Uint8Array(64);this.customNonIntraQuantMatrix=new Uint8Array(64);this.blockData=new Int32Array(64);this.currentFrame=0;this.decodeFirstFrame=options.decodeFirstFrame!==false};MPEG1.prototype=Object.create(JSMpeg.Decoder.Base.prototype);MPEG1.prototype.constructor=MPEG1;MPEG1.prototype.write=function(pts,buffers){JSMpeg.Decoder.Base.prototype.write.call(this,pts,buffers);if(!this.hasSequenceHeader){if(this.bits.findStartCode(MPEG1.START.SEQUENCE)===-1){return false}this.decodeSequenceHeader();if(this.decodeFirstFrame){this.decode()}}};MPEG1.prototype.decode=function(){if(!this.hasSequenceHeader){return false}if(this.bits.findStartCode(MPEG1.START.PICTURE)===-1){var bufferedBytes=this.bits.byteLength-(this.bits.index>>3);return false}this.decodePicture();this.advanceDecodedTime(1/this.frameRate);return true};MPEG1.prototype.readHuffman=function(codeTable){var state=0;do{state=codeTable[state+this.bits.read(1)]}while(state>=0&&codeTable[state]!==0);return codeTable[state+2]};MPEG1.prototype.frameRate=30;MPEG1.prototype.decodeSequenceHeader=function(){var newWidth=this.bits.read(12),newHeight=this.bits.read(12);this.bits.skip(4);this.frameRate=MPEG1.PICTURE_RATE[this.bits.read(4)];this.bits.skip(18+1+10+1);if(newWidth!==this.width||newHeight!==this.height){this.width=newWidth;this.height=newHeight;this.initBuffers();if(this.destination){this.destination.resize(newWidth,newHeight)}}if(this.bits.read(1)){for(var i=0;i<64;i++){this.customIntraQuantMatrix[MPEG1.ZIG_ZAG[i]]=this.bits.read(8)}this.intraQuantMatrix=this.customIntraQuantMatrix}if(this.bits.read(1)){for(var i=0;i<64;i++){var idx=MPEG1.ZIG_ZAG[i];this.customNonIntraQuantMatrix[idx]=this.bits.read(8)}this.nonIntraQuantMatrix=this.customNonIntraQuantMatrix}this.hasSequenceHeader=true};MPEG1.prototype.initBuffers=function(){this.intraQuantMatrix=MPEG1.DEFAULT_INTRA_QUANT_MATRIX;this.nonIntraQuantMatrix=MPEG1.DEFAULT_NON_INTRA_QUANT_MATRIX;this.mbWidth=this.width+15>>4;this.mbHeight=this.height+15>>4;this.mbSize=this.mbWidth*this.mbHeight;this.codedWidth=this.mbWidth<<4;this.codedHeight=this.mbHeight<<4;this.codedSize=this.codedWidth*this.codedHeight;this.halfWidth=this.mbWidth<<3;this.halfHeight=this.mbHeight<<3;this.currentY=new Uint8ClampedArray(this.codedSize);this.currentY32=new Uint32Array(this.currentY.buffer);this.currentCr=new Uint8ClampedArray(this.codedSize>>2);this.currentCr32=new Uint32Array(this.currentCr.buffer);this.currentCb=new Uint8ClampedArray(this.codedSize>>2);this.currentCb32=new Uint32Array(this.currentCb.buffer);this.forwardY=new Uint8ClampedArray(this.codedSize);this.forwardY32=new Uint32Array(this.forwardY.buffer);this.forwardCr=new Uint8ClampedArray(this.codedSize>>2);this.forwardCr32=new Uint32Array(this.forwardCr.buffer);this.forwardCb=new Uint8ClampedArray(this.codedSize>>2);this.forwardCb32=new Uint32Array(this.forwardCb.buffer)};MPEG1.prototype.currentY=null;MPEG1.prototype.currentCr=null;MPEG1.prototype.currentCb=null;MPEG1.prototype.pictureType=0;MPEG1.prototype.forwardY=null;MPEG1.prototype.forwardCr=null;MPEG1.prototype.forwardCb=null;MPEG1.prototype.fullPelForward=false;MPEG1.prototype.forwardFCode=0;MPEG1.prototype.forwardRSize=0;MPEG1.prototype.forwardF=0;MPEG1.prototype.decodePicture=function(skipOutput){this.currentFrame++;this.bits.skip(10);this.pictureType=this.bits.read(3);this.bits.skip(16);if(this.pictureType<=0||this.pictureType>=MPEG1.PICTURE_TYPE.B){return}if(this.pictureType===MPEG1.PICTURE_TYPE.PREDICTIVE){this.fullPelForward=this.bits.read(1);this.forwardFCode=this.bits.read(3);if(this.forwardFCode===0){return}this.forwardRSize=this.forwardFCode-1;this.forwardF=1<=MPEG1.START.SLICE_FIRST&&code<=MPEG1.START.SLICE_LAST){this.decodeSlice(code&255);code=this.bits.findNextStartCode()}if(code!==-1){this.bits.rewind(32)}if(this.destination){this.destination.render(this.currentY,this.currentCr,this.currentCb)}if(this.pictureType===MPEG1.PICTURE_TYPE.INTRA||this.pictureType===MPEG1.PICTURE_TYPE.PREDICTIVE){var tmpY=this.forwardY,tmpY32=this.forwardY32,tmpCr=this.forwardCr,tmpCr32=this.forwardCr32,tmpCb=this.forwardCb,tmpCb32=this.forwardCb32;this.forwardY=this.currentY;this.forwardY32=this.currentY32;this.forwardCr=this.currentCr;this.forwardCr32=this.currentCr32;this.forwardCb=this.currentCb;this.forwardCb32=this.currentCb32;this.currentY=tmpY;this.currentY32=tmpY32;this.currentCr=tmpCr;this.currentCr32=tmpCr32;this.currentCb=tmpCb;this.currentCb32=tmpCb32}};MPEG1.prototype.quantizerScale=0;MPEG1.prototype.sliceBegin=false;MPEG1.prototype.decodeSlice=function(slice){this.sliceBegin=true;this.macroblockAddress=(slice-1)*this.mbWidth-1;this.motionFwH=this.motionFwHPrev=0;this.motionFwV=this.motionFwVPrev=0;this.dcPredictorY=128;this.dcPredictorCr=128;this.dcPredictorCb=128;this.quantizerScale=this.bits.read(5);while(this.bits.read(1)){this.bits.skip(8)}do{this.decodeMacroblock()}while(!this.bits.nextBytesAreStartCode())};MPEG1.prototype.macroblockAddress=0;MPEG1.prototype.mbRow=0;MPEG1.prototype.mbCol=0;MPEG1.prototype.macroblockType=0;MPEG1.prototype.macroblockIntra=false;MPEG1.prototype.macroblockMotFw=false;MPEG1.prototype.motionFwH=0;MPEG1.prototype.motionFwV=0;MPEG1.prototype.motionFwHPrev=0;MPEG1.prototype.motionFwVPrev=0;MPEG1.prototype.decodeMacroblock=function(){var increment=0,t=this.readHuffman(MPEG1.MACROBLOCK_ADDRESS_INCREMENT);while(t===34){t=this.readHuffman(MPEG1.MACROBLOCK_ADDRESS_INCREMENT)}while(t===35){increment+=33;t=this.readHuffman(MPEG1.MACROBLOCK_ADDRESS_INCREMENT)}increment+=t;if(this.sliceBegin){this.sliceBegin=false;this.macroblockAddress+=increment}else{if(this.macroblockAddress+increment>=this.mbSize){return}if(increment>1){this.dcPredictorY=128;this.dcPredictorCr=128;this.dcPredictorCb=128;if(this.pictureType===MPEG1.PICTURE_TYPE.PREDICTIVE){this.motionFwH=this.motionFwHPrev=0;this.motionFwV=this.motionFwVPrev=0}}while(increment>1){this.macroblockAddress++;this.mbRow=this.macroblockAddress/this.mbWidth|0;this.mbCol=this.macroblockAddress%this.mbWidth;this.copyMacroblock(this.motionFwH,this.motionFwV,this.forwardY,this.forwardCr,this.forwardCb);increment--}this.macroblockAddress++}this.mbRow=this.macroblockAddress/this.mbWidth|0;this.mbCol=this.macroblockAddress%this.mbWidth;var mbTable=MPEG1.MACROBLOCK_TYPE[this.pictureType];this.macroblockType=this.readHuffman(mbTable);this.macroblockIntra=this.macroblockType&1;this.macroblockMotFw=this.macroblockType&8;if((this.macroblockType&16)!==0){this.quantizerScale=this.bits.read(5)}if(this.macroblockIntra){this.motionFwH=this.motionFwHPrev=0;this.motionFwV=this.motionFwVPrev=0}else{this.dcPredictorY=128;this.dcPredictorCr=128;this.dcPredictorCb=128;this.decodeMotionVectors();this.copyMacroblock(this.motionFwH,this.motionFwV,this.forwardY,this.forwardCr,this.forwardCb)}var cbp=(this.macroblockType&2)!==0?this.readHuffman(MPEG1.CODE_BLOCK_PATTERN):this.macroblockIntra?63:0;for(var block=0,mask=32;block<6;block++){if((cbp&mask)!==0){this.decodeBlock(block)}mask>>=1}};MPEG1.prototype.decodeMotionVectors=function(){var code,d,r=0;if(this.macroblockMotFw){code=this.readHuffman(MPEG1.MOTION);if(code!==0&&this.forwardF!==1){r=this.bits.read(this.forwardRSize);d=(Math.abs(code)-1<(this.forwardF<<4)-1){this.motionFwHPrev-=this.forwardF<<5}else if(this.motionFwHPrev<-this.forwardF<<4){this.motionFwHPrev+=this.forwardF<<5}this.motionFwH=this.motionFwHPrev;if(this.fullPelForward){this.motionFwH<<=1}code=this.readHuffman(MPEG1.MOTION);if(code!==0&&this.forwardF!==1){r=this.bits.read(this.forwardRSize);d=(Math.abs(code)-1<(this.forwardF<<4)-1){this.motionFwVPrev-=this.forwardF<<5}else if(this.motionFwVPrev<-this.forwardF<<4){this.motionFwVPrev+=this.forwardF<<5}this.motionFwV=this.motionFwVPrev;if(this.fullPelForward){this.motionFwV<<=1}}else if(this.pictureType===MPEG1.PICTURE_TYPE.PREDICTIVE){this.motionFwH=this.motionFwHPrev=0;this.motionFwV=this.motionFwVPrev=0}};MPEG1.prototype.copyMacroblock=function(motionH,motionV,sY,sCr,sCb){var width,scan,H,V,oddH,oddV,src,dest,last;var dY=this.currentY32,dCb=this.currentCb32,dCr=this.currentCr32;width=this.codedWidth;scan=width-16;H=motionH>>1;V=motionV>>1;oddH=(motionH&1)===1;oddV=(motionV&1)===1;src=((this.mbRow<<4)+V)*width+(this.mbCol<<4)+H;dest=this.mbRow*width+this.mbCol<<2;last=dest+(width<<2);var x,y1,y2,y;if(oddH){if(oddV){while(dest>2&255;y1=sY[src]+sY[src+width];src++;y|=y1+y2+2<<6&65280;y2=sY[src]+sY[src+width];src++;y|=y1+y2+2<<14&16711680;y1=sY[src]+sY[src+width];src++;y|=y1+y2+2<<22&4278190080;dY[dest++]=y}dest+=scan>>2;src+=scan-1}}else{while(dest>1&255;y1=sY[src++];y|=y1+y2+1<<7&65280;y2=sY[src++];y|=y1+y2+1<<15&16711680;y1=sY[src++];y|=y1+y2+1<<23&4278190080;dY[dest++]=y}dest+=scan>>2;src+=scan-1}}}else{if(oddV){while(dest>1&255;src++;y|=sY[src]+sY[src+width]+1<<7&65280;src++;y|=sY[src]+sY[src+width]+1<<15&16711680;src++;y|=sY[src]+sY[src+width]+1<<23&4278190080;src++;dY[dest++]=y}dest+=scan>>2;src+=scan}}else{while(dest>2;src+=scan; 2 | }}}width=this.halfWidth;scan=width-8;H=motionH/2>>1;V=motionV/2>>1;oddH=(motionH/2&1)===1;oddV=(motionV/2&1)===1;src=((this.mbRow<<3)+V)*width+(this.mbCol<<3)+H;dest=this.mbRow*width+this.mbCol<<1;last=dest+(width<<1);var cr1,cr2,cr,cb1,cb2,cb;if(oddH){if(oddV){while(dest>2&255;cb=cb1+cb2+2>>2&255;cr1=sCr[src]+sCr[src+width];cb1=sCb[src]+sCb[src+width];src++;cr|=cr1+cr2+2<<6&65280;cb|=cb1+cb2+2<<6&65280;cr2=sCr[src]+sCr[src+width];cb2=sCb[src]+sCb[src+width];src++;cr|=cr1+cr2+2<<14&16711680;cb|=cb1+cb2+2<<14&16711680;cr1=sCr[src]+sCr[src+width];cb1=sCb[src]+sCb[src+width];src++;cr|=cr1+cr2+2<<22&4278190080;cb|=cb1+cb2+2<<22&4278190080;dCr[dest]=cr;dCb[dest]=cb;dest++}dest+=scan>>2;src+=scan-1}}else{while(dest>1&255;cb=cb1+cb2+1>>1&255;cr1=sCr[src];cb1=sCb[src++];cr|=cr1+cr2+1<<7&65280;cb|=cb1+cb2+1<<7&65280;cr2=sCr[src];cb2=sCb[src++];cr|=cr1+cr2+1<<15&16711680;cb|=cb1+cb2+1<<15&16711680;cr1=sCr[src];cb1=sCb[src++];cr|=cr1+cr2+1<<23&4278190080;cb|=cb1+cb2+1<<23&4278190080;dCr[dest]=cr;dCb[dest]=cb;dest++}dest+=scan>>2;src+=scan-1}}}else{if(oddV){while(dest>1&255;cb=sCb[src]+sCb[src+width]+1>>1&255;src++;cr|=sCr[src]+sCr[src+width]+1<<7&65280;cb|=sCb[src]+sCb[src+width]+1<<7&65280;src++;cr|=sCr[src]+sCr[src+width]+1<<15&16711680;cb|=sCb[src]+sCb[src+width]+1<<15&16711680;src++;cr|=sCr[src]+sCr[src+width]+1<<23&4278190080;cb|=sCb[src]+sCb[src+width]+1<<23&4278190080;src++;dCr[dest]=cr;dCb[dest]=cb;dest++}dest+=scan>>2;src+=scan}}else{while(dest>2;src+=scan}}}};MPEG1.prototype.dcPredictorY=0;MPEG1.prototype.dcPredictorCr=0;MPEG1.prototype.dcPredictorCb=0;MPEG1.prototype.blockData=null;MPEG1.prototype.decodeBlock=function(block){var n=0,quantMatrix;if(this.macroblockIntra){var predictor,dctSize;if(block<4){predictor=this.dcPredictorY;dctSize=this.readHuffman(MPEG1.DCT_DC_SIZE_LUMINANCE)}else{predictor=block===4?this.dcPredictorCr:this.dcPredictorCb;dctSize=this.readHuffman(MPEG1.DCT_DC_SIZE_CHROMINANCE)}if(dctSize>0){var differential=this.bits.read(dctSize);if((differential&1<0&&this.bits.read(1)===0){break}if(coeff===65535){run=this.bits.read(6);level=this.bits.read(8);if(level===0){level=this.bits.read(8)}else if(level===128){level=this.bits.read(8)-256}else if(level>128){level=level-256}}else{run=coeff>>8;level=coeff&255;if(this.bits.read(1)){level=-level}}n+=run;var dezigZagged=MPEG1.ZIG_ZAG[n];n++;level<<=1;if(!this.macroblockIntra){level+=level<0?-1:1}level=level*this.quantizerScale*quantMatrix[dezigZagged]>>4;if((level&1)===0){level-=level>0?1:-1}if(level>2047){level=2047}else if(level<-2048){level=-2048}this.blockData[dezigZagged]=level*MPEG1.PREMULTIPLIER_MATRIX[dezigZagged]}var destArray,destIndex,scan;if(block<4){destArray=this.currentY;scan=this.codedWidth-8;destIndex=this.mbRow*this.codedWidth+this.mbCol<<4;if((block&1)!==0){destIndex+=8}if((block&2)!==0){destIndex+=this.codedWidth<<3}}else{destArray=block===4?this.currentCb:this.currentCr;scan=(this.codedWidth>>1)-8;destIndex=(this.mbRow*this.codedWidth<<2)+(this.mbCol<<3)}if(this.macroblockIntra){if(n===1){MPEG1.CopyValueToDestination(this.blockData[0]+128>>8,destArray,destIndex,scan);this.blockData[0]=0}else{MPEG1.IDCT(this.blockData);MPEG1.CopyBlockToDestination(this.blockData,destArray,destIndex,scan);JSMpeg.Fill(this.blockData,0)}}else{if(n===1){MPEG1.AddValueToDestination(this.blockData[0]+128>>8,destArray,destIndex,scan);this.blockData[0]=0}else{MPEG1.IDCT(this.blockData);MPEG1.AddBlockToDestination(this.blockData,destArray,destIndex,scan);JSMpeg.Fill(this.blockData,0)}}n=0};MPEG1.CopyBlockToDestination=function(block,dest,index,scan){for(var n=0;n<64;n+=8,index+=scan+8){dest[index+0]=block[n+0];dest[index+1]=block[n+1];dest[index+2]=block[n+2];dest[index+3]=block[n+3];dest[index+4]=block[n+4];dest[index+5]=block[n+5];dest[index+6]=block[n+6];dest[index+7]=block[n+7]}};MPEG1.AddBlockToDestination=function(block,dest,index,scan){for(var n=0;n<64;n+=8,index+=scan+8){dest[index+0]+=block[n+0];dest[index+1]+=block[n+1];dest[index+2]+=block[n+2];dest[index+3]+=block[n+3];dest[index+4]+=block[n+4];dest[index+5]+=block[n+5];dest[index+6]+=block[n+6];dest[index+7]+=block[n+7]}};MPEG1.CopyValueToDestination=function(value,dest,index,scan){for(var n=0;n<64;n+=8,index+=scan+8){dest[index+0]=value;dest[index+1]=value;dest[index+2]=value;dest[index+3]=value;dest[index+4]=value;dest[index+5]=value;dest[index+6]=value;dest[index+7]=value}};MPEG1.AddValueToDestination=function(value,dest,index,scan){for(var n=0;n<64;n+=8,index+=scan+8){dest[index+0]+=value;dest[index+1]+=value;dest[index+2]+=value;dest[index+3]+=value;dest[index+4]+=value;dest[index+5]+=value;dest[index+6]+=value;dest[index+7]+=value}};MPEG1.IDCT=function(block){var b1,b3,b4,b6,b7,tmp1,tmp2,m0,x0,x1,x2,x3,x4,y3,y4,y5,y6,y7;for(var i=0;i<8;++i){b1=block[4*8+i];b3=block[2*8+i]+block[6*8+i];b4=block[5*8+i]-block[3*8+i];tmp1=block[1*8+i]+block[7*8+i];tmp2=block[3*8+i]+block[5*8+i];b6=block[1*8+i]-block[7*8+i];b7=tmp1+tmp2;m0=block[0*8+i];x4=(b6*473-b4*196+128>>8)-b7;x0=x4-((tmp1-tmp2)*362+128>>8);x1=m0-b1;x2=((block[2*8+i]-block[6*8+i])*362+128>>8)-b3;x3=m0+b1;y3=x1+x2;y4=x3+b3;y5=x1-x2;y6=x3-b3;y7=-x0-(b4*473+b6*196+128>>8);block[0*8+i]=b7+y4;block[1*8+i]=x4+y3;block[2*8+i]=y5-x0;block[3*8+i]=y6-y7;block[4*8+i]=y6+y7;block[5*8+i]=x0+y5;block[6*8+i]=y3-x4;block[7*8+i]=y4-b7}for(var i=0;i<64;i+=8){b1=block[4+i];b3=block[2+i]+block[6+i];b4=block[5+i]-block[3+i];tmp1=block[1+i]+block[7+i];tmp2=block[3+i]+block[5+i];b6=block[1+i]-block[7+i];b7=tmp1+tmp2;m0=block[0+i];x4=(b6*473-b4*196+128>>8)-b7;x0=x4-((tmp1-tmp2)*362+128>>8);x1=m0-b1;x2=((block[2+i]-block[6+i])*362+128>>8)-b3;x3=m0+b1;y3=x1+x2;y4=x3+b3;y5=x1-x2;y6=x3-b3;y7=-x0-(b4*473+b6*196+128>>8);block[0+i]=b7+y4+128>>8;block[1+i]=x4+y3+128>>8;block[2+i]=y5-x0+128>>8;block[3+i]=y6-y7+128>>8;block[4+i]=y6+y7+128>>8;block[5+i]=x0+y5+128>>8;block[6+i]=y3-x4+128>>8;block[7+i]=y4-b7+128>>8}};MPEG1.PICTURE_RATE=[0,23.976,24,25,29.97,30,50,59.94,60,0,0,0,0,0,0,0];MPEG1.ZIG_ZAG=new Uint8Array([0,1,8,16,9,2,3,10,17,24,32,25,18,11,4,5,12,19,26,33,40,48,41,34,27,20,13,6,7,14,21,28,35,42,49,56,57,50,43,36,29,22,15,23,30,37,44,51,58,59,52,45,38,31,39,46,53,60,61,54,47,55,62,63]);MPEG1.DEFAULT_INTRA_QUANT_MATRIX=new Uint8Array([8,16,19,22,26,27,29,34,16,16,22,24,27,29,34,37,19,22,26,27,29,34,34,38,22,22,26,27,29,34,37,40,22,26,27,29,32,35,40,48,26,27,29,32,35,40,48,58,26,27,29,34,38,46,56,69,27,29,35,38,46,56,69,83]);MPEG1.DEFAULT_NON_INTRA_QUANT_MATRIX=new Uint8Array([16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16]);MPEG1.PREMULTIPLIER_MATRIX=new Uint8Array([32,44,42,38,32,25,17,9,44,62,58,52,44,35,24,12,42,58,55,49,42,33,23,12,38,52,49,44,38,30,20,10,32,44,42,38,32,25,17,9,25,35,33,30,25,20,14,7,17,24,23,20,17,14,9,5,9,12,12,10,9,7,5,2]);MPEG1.MACROBLOCK_ADDRESS_INCREMENT=new Int16Array([1*3,2*3,0,3*3,4*3,0,0,0,1,5*3,6*3,0,7*3,8*3,0,9*3,10*3,0,11*3,12*3,0,0,0,3,0,0,2,13*3,14*3,0,15*3,16*3,0,0,0,5,0,0,4,17*3,18*3,0,19*3,20*3,0,0,0,7,0,0,6,21*3,22*3,0,23*3,24*3,0,25*3,26*3,0,27*3,28*3,0,-1,29*3,0,-1,30*3,0,31*3,32*3,0,33*3,34*3,0,35*3,36*3,0,37*3,38*3,0,0,0,9,0,0,8,39*3,40*3,0,41*3,42*3,0,43*3,44*3,0,45*3,46*3,0,0,0,15,0,0,14,0,0,13,0,0,12,0,0,11,0,0,10,47*3,-1,0,-1,48*3,0,49*3,50*3,0,51*3,52*3,0,53*3,54*3,0,55*3,56*3,0,57*3,58*3,0,59*3,60*3,0,61*3,-1,0,-1,62*3,0,63*3,64*3,0,65*3,66*3,0,67*3,68*3,0,69*3,70*3,0,71*3,72*3,0,73*3,74*3,0,0,0,21,0,0,20,0,0,19,0,0,18,0,0,17,0,0,16,0,0,35,0,0,34,0,0,33,0,0,32,0,0,31,0,0,30,0,0,29,0,0,28,0,0,27,0,0,26,0,0,25,0,0,24,0,0,23,0,0,22]);MPEG1.MACROBLOCK_TYPE_INTRA=new Int8Array([1*3,2*3,0,-1,3*3,0,0,0,1,0,0,17]);MPEG1.MACROBLOCK_TYPE_PREDICTIVE=new Int8Array([1*3,2*3,0,3*3,4*3,0,0,0,10,5*3,6*3,0,0,0,2,7*3,8*3,0,0,0,8,9*3,10*3,0,11*3,12*3,0,-1,13*3,0,0,0,18,0,0,26,0,0,1,0,0,17]);MPEG1.MACROBLOCK_TYPE_B=new Int8Array([1*3,2*3,0,3*3,5*3,0,4*3,6*3,0,8*3,7*3,0,0,0,12,9*3,10*3,0,0,0,14,13*3,14*3,0,12*3,11*3,0,0,0,4,0,0,6,18*3,16*3,0,15*3,17*3,0,0,0,8,0,0,10,-1,19*3,0,0,0,1,20*3,21*3,0,0,0,30,0,0,17,0,0,22,0,0,26]);MPEG1.MACROBLOCK_TYPE=[null,MPEG1.MACROBLOCK_TYPE_INTRA,MPEG1.MACROBLOCK_TYPE_PREDICTIVE,MPEG1.MACROBLOCK_TYPE_B];MPEG1.CODE_BLOCK_PATTERN=new Int16Array([2*3,1*3,0,3*3,6*3,0,4*3,5*3,0,8*3,11*3,0,12*3,13*3,0,9*3,7*3,0,10*3,14*3,0,20*3,19*3,0,18*3,16*3,0,23*3,17*3,0,27*3,25*3,0,21*3,28*3,0,15*3,22*3,0,24*3,26*3,0,0,0,60,35*3,40*3,0,44*3,48*3,0,38*3,36*3,0,42*3,47*3,0,29*3,31*3,0,39*3,32*3,0,0,0,32,45*3,46*3,0,33*3,41*3,0,43*3,34*3,0,0,0,4,30*3,37*3,0,0,0,8,0,0,16,0,0,44,50*3,56*3,0,0,0,28,0,0,52,0,0,62,61*3,59*3,0,52*3,60*3,0,0,0,1,55*3,54*3,0,0,0,61,0,0,56,57*3,58*3,0,0,0,2,0,0,40,51*3,62*3,0,0,0,48,64*3,63*3,0,49*3,53*3,0,0,0,20,0,0,12,80*3,83*3,0,0,0,63,77*3,75*3,0,65*3,73*3,0,84*3,66*3,0,0,0,24,0,0,36,0,0,3,69*3,87*3,0,81*3,79*3,0,68*3,71*3,0,70*3,78*3,0,67*3,76*3,0,72*3,74*3,0,86*3,85*3,0,88*3,82*3,0,-1,94*3,0,95*3,97*3,0,0,0,33,0,0,9,106*3,110*3,0,102*3,116*3,0,0,0,5,0,0,10,93*3,89*3,0,0,0,6,0,0,18,0,0,17,0,0,34,113*3,119*3,0,103*3,104*3,0,90*3,92*3,0,109*3,107*3,0,117*3,118*3,0,101*3,99*3,0,98*3,96*3,0,100*3,91*3,0,114*3,115*3,0,105*3,108*3,0,112*3,111*3,0,121*3,125*3,0,0,0,41,0,0,14,0,0,21,124*3,122*3,0,120*3,123*3,0,0,0,11,0,0,19,0,0,7,0,0,35,0,0,13,0,0,50,0,0,49,0,0,58,0,0,37,0,0,25,0,0,45,0,0,57,0,0,26,0,0,29,0,0,38,0,0,53,0,0,23,0,0,43,0,0,46,0,0,42,0,0,22,0,0,54,0,0,51,0,0,15,0,0,30,0,0,39,0,0,47,0,0,55,0,0,27,0,0,59,0,0,31]);MPEG1.MOTION=new Int16Array([1*3,2*3,0,4*3,3*3,0,0,0,0,6*3,5*3,0,8*3,7*3,0,0,0,-1,0,0,1,9*3,10*3,0,12*3,11*3,0,0,0,2,0,0,-2,14*3,15*3,0,16*3,13*3,0,20*3,18*3,0,0,0,3,0,0,-3,17*3,19*3,0,-1,23*3,0,27*3,25*3,0,26*3,21*3,0,24*3,22*3,0,32*3,28*3,0,29*3,31*3,0,-1,33*3,0,36*3,35*3,0,0,0,-4,30*3,34*3,0,0,0,4,0,0,-7,0,0,5,37*3,41*3,0,0,0,-5,0,0,7,38*3,40*3,0,42*3,39*3,0,0,0,-6,0,0,6,51*3,54*3,0,50*3,49*3,0,45*3,46*3,0,52*3,47*3,0,43*3,53*3,0,44*3,48*3,0,0,0,10,0,0,9,0,0,8,0,0,-8,57*3,66*3,0,0,0,-9,60*3,64*3,0,56*3,61*3,0,55*3,62*3,0,58*3,63*3,0,0,0,-10,59*3,65*3,0,0,0,12,0,0,16,0,0,13,0,0,14,0,0,11,0,0,15,0,0,-16,0,0,-12,0,0,-14,0,0,-15,0,0,-11,0,0,-13]);MPEG1.DCT_DC_SIZE_LUMINANCE=new Int8Array([2*3,1*3,0,6*3,5*3,0,3*3,4*3,0,0,0,1,0,0,2,9*3,8*3,0,7*3,10*3,0,0,0,0,12*3,11*3,0,0,0,4,0,0,3,13*3,14*3,0,0,0,5,0,0,6,16*3,15*3,0,17*3,-1,0,0,0,7,0,0,8]);MPEG1.DCT_DC_SIZE_CHROMINANCE=new Int8Array([2*3,1*3,0,4*3,3*3,0,6*3,5*3,0,8*3,7*3,0,0,0,2,0,0,1,0,0,0,10*3,9*3,0,0,0,3,12*3,11*3,0,0,0,4,14*3,13*3,0,0,0,5,16*3,15*3,0,0,0,6,17*3,-1,0,0,0,7,0,0,8]);MPEG1.DCT_COEFF=new Int32Array([1*3,2*3,0,4*3,3*3,0,0,0,1,7*3,8*3,0,6*3,5*3,0,13*3,9*3,0,11*3,10*3,0,14*3,12*3,0,0,0,257,20*3,22*3,0,18*3,21*3,0,16*3,19*3,0,0,0,513,17*3,15*3,0,0,0,2,0,0,3,27*3,25*3,0,29*3,31*3,0,24*3,26*3,0,32*3,30*3,0,0,0,1025,23*3,28*3,0,0,0,769,0,0,258,0,0,1793,0,0,65535,0,0,1537,37*3,36*3,0,0,0,1281,35*3,34*3,0,39*3,38*3,0,33*3,42*3,0,40*3,41*3,0,52*3,50*3,0,54*3,53*3,0,48*3,49*3,0,43*3,45*3,0,46*3,44*3,0,0,0,2049,0,0,4,0,0,514,0,0,2305,51*3,47*3,0,55*3,57*3,0,60*3,56*3,0,59*3,58*3,0,61*3,62*3,0,0,0,2561,0,0,3329,0,0,6,0,0,259,0,0,5,0,0,770,0,0,2817,0,0,3073,76*3,75*3,0,67*3,70*3,0,73*3,71*3,0,78*3,74*3,0,72*3,77*3,0,69*3,64*3,0,68*3,63*3,0,66*3,65*3,0,81*3,87*3,0,91*3,80*3,0,82*3,79*3,0,83*3,86*3,0,93*3,92*3,0,84*3,85*3,0,90*3,94*3,0,88*3,89*3,0,0,0,515,0,0,260,0,0,7,0,0,1026,0,0,1282,0,0,4097,0,0,3841,0,0,3585,105*3,107*3,0,111*3,114*3,0,104*3,97*3,0,125*3,119*3,0,96*3,98*3,0,-1,123*3,0,95*3,101*3,0,106*3,121*3,0,99*3,102*3,0,113*3,103*3,0,112*3,116*3,0,110*3,100*3,0,124*3,115*3,0,117*3,122*3,0,109*3,118*3,0,120*3,108*3,0,127*3,136*3,0,139*3,140*3,0,130*3,126*3,0,145*3,146*3,0,128*3,129*3,0,0,0,2050,132*3,134*3,0,155*3,154*3,0,0,0,8,137*3,133*3,0,143*3,144*3,0,151*3,138*3,0,142*3,141*3,0,0,0,10,0,0,9,0,0,11,0,0,5377,0,0,1538,0,0,771,0,0,5121,0,0,1794,0,0,4353,0,0,4609,0,0,4865,148*3,152*3,0,0,0,1027,153*3,150*3,0,0,0,261,131*3,135*3,0,0,0,516,149*3,147*3,0,172*3,173*3,0,162*3,158*3,0,170*3,161*3,0,168*3,166*3,0,157*3,179*3,0,169*3,167*3,0,174*3,171*3,0,178*3,177*3,0,156*3,159*3,0,164*3,165*3,0,183*3,182*3,0,175*3,176*3,0,0,0,263,0,0,2562,0,0,2306,0,0,5633,0,0,5889,0,0,6401,0,0,6145,0,0,1283,0,0,772,0,0,13,0,0,12,0,0,14,0,0,15,0,0,517,0,0,6657,0,0,262,180*3,181*3,0,160*3,163*3,0,196*3,199*3,0,0,0,27,203*3,185*3,0,202*3,201*3,0,0,0,19,0,0,22,197*3,207*3,0,0,0,18,191*3,192*3,0,188*3,190*3,0,0,0,20,184*3,194*3,0,0,0,21,186*3,193*3,0,0,0,23,204*3,198*3,0,0,0,25,0,0,24,200*3,205*3,0,0,0,31,0,0,30,0,0,28,0,0,29,0,0,26,0,0,17,0,0,16,189*3,206*3,0,187*3,195*3,0,218*3,211*3,0,0,0,37,215*3,216*3,0,0,0,36,210*3,212*3,0,0,0,34,213*3,209*3,0,221*3,222*3,0,219*3,208*3,0,217*3,214*3,0,223*3,220*3,0,0,0,35,0,0,267,0,0,40,0,0,268,0,0,266,0,0,32,0,0,264,0,0,265,0,0,38,0,0,269,0,0,270,0,0,33,0,0,39,0,0,7937,0,0,6913,0,0,7681,0,0,4098,0,0,7425,0,0,7169,0,0,271,0,0,274,0,0,273,0,0,272,0,0,1539,0,0,2818,0,0,3586,0,0,3330,0,0,3074,0,0,3842]);MPEG1.PICTURE_TYPE={INTRA:1,PREDICTIVE:2,B:3};MPEG1.START={SEQUENCE:179,SLICE_FIRST:1,SLICE_LAST:175,PICTURE:0,EXTENSION:181,USER_DATA:178};return MPEG1}();JSMpeg.Decoder.MP2Audio=function(){"use strict";var MP2=function(options){JSMpeg.Decoder.Base.call(this,options);var bufferSize=options.audioBufferSize||128*1024;var bufferMode=options.streaming?JSMpeg.BitBuffer.MODE.EVICT:JSMpeg.BitBuffer.MODE.EXPAND;this.bits=new JSMpeg.BitBuffer(bufferSize,bufferMode);this.left=new Float32Array(1152);this.right=new Float32Array(1152);this.sampleRate=44100;this.D=new Float32Array(1024);this.D.set(MP2.SYNTHESIS_WINDOW,0);this.D.set(MP2.SYNTHESIS_WINDOW,512);this.V=new Float32Array(1024);this.U=new Int32Array(32);this.VPos=0;this.allocation=[new Array(32),new Array(32)];this.scaleFactorInfo=[new Uint8Array(32),new Uint8Array(32)];this.scaleFactor=[new Array(32),new Array(32)];this.sample=[new Array(32),new Array(32)];for(var j=0;j<2;j++){for(var i=0;i<32;i++){this.scaleFactor[j][i]=[0,0,0];this.sample[j][i]=[0,0,0]}}};MP2.prototype=Object.create(JSMpeg.Decoder.Base.prototype);MP2.prototype.constructor=MP2;MP2.prototype.decode=function(){var pos=this.bits.index>>3;if(pos>=this.bits.byteLength){return false}var decoded=this.decodeFrame(this.left,this.right);this.bits.index=pos+decoded<<3;if(!decoded){return false}if(this.destination){this.destination.play(this.sampleRate,this.left,this.right)}this.advanceDecodedTime(this.left.length/this.sampleRate);return true};MP2.prototype.getCurrentTime=function(){var enqueuedTime=this.destination?this.destination.enqueuedTime:0;return this.decodedTime-enqueuedTime};MP2.prototype.decodeFrame=function(left,right){var sync=this.bits.read(11),version=this.bits.read(2),layer=this.bits.read(2),hasCRC=!this.bits.read(1);if(sync!==MP2.FRAME_SYNC||version!==MP2.VERSION.MPEG_1||layer!==MP2.LAYER.II){return 0}var bitrateIndex=this.bits.read(4)-1;if(bitrateIndex>13){return 0}var sampleRateIndex=this.bits.read(2);var sampleRate=MP2.SAMPLE_RATE[sampleRateIndex];if(sampleRateIndex===3){return 0}if(version===MP2.VERSION.MPEG_2){sampleRateIndex+=4;bitrateIndex+=14}var padding=this.bits.read(1),privat=this.bits.read(1),mode=this.bits.read(2);var bound=0;if(mode===MP2.MODE.JOINT_STEREO){bound=this.bits.read(2)+1<<2}else{this.bits.skip(2);bound=mode===MP2.MODE.MONO?0:32}this.bits.skip(4);if(hasCRC){this.bits.skip(16)}var bitrate=MP2.BIT_RATE[bitrateIndex],sampleRate=MP2.SAMPLE_RATE[sampleRateIndex],frameSize=144e3*bitrate/sampleRate+padding|0;var tab3=0;var sblimit=0;if(version===MP2.VERSION.MPEG_2){tab3=2;sblimit=30}else{var tab1=mode===MP2.MODE.MONO?0:1;var tab2=MP2.QUANT_LUT_STEP_1[tab1][bitrateIndex];tab3=MP2.QUANT_LUT_STEP_2[tab2][sampleRateIndex];sblimit=tab3&63;tab3>>=6}if(bound>sblimit){bound=sblimit}for(var sb=0;sb>1);var vIndex=this.VPos%128>>1;while(vIndex<1024){for(var i=0;i<32;++i){this.U[i]+=this.D[dIndex++]*this.V[vIndex++]}vIndex+=128-32;dIndex+=64-32}vIndex=128-32+1024-vIndex;dIndex-=512-32;while(vIndex<1024){for(var i=0;i<32;++i){this.U[i]+=this.D[dIndex++]*this.V[vIndex++]}vIndex+=128-32;dIndex+=64-32}var outChannel=ch===0?left:right;for(var j=0;j<32;j++){outChannel[outPos+j]=this.U[j]/2147418112}}outPos+=32}}}this.sampleRate=sampleRate;return frameSize};MP2.prototype.readAllocation=function(sb,tab3){var tab4=MP2.QUANT_LUT_STEP_3[tab3][sb];var qtab=MP2.QUANT_LUT_STEP4[tab4&15][this.bits.read(tab4>>4)];return qtab?MP2.QUANT_TAB[qtab-1]:0};MP2.prototype.readSamples=function(ch,sb,part){var q=this.allocation[ch][sb],sf=this.scaleFactor[ch][sb][part],sample=this.sample[ch][sb],val=0;if(!q){sample[0]=sample[1]=sample[2]=0;return}if(sf===63){sf=0}else{var shift=sf/3|0;sf=MP2.SCALEFACTOR_BASE[sf%3]+(1<>1)>>shift}var adj=q.levels;if(q.group){val=this.bits.read(q.bits);sample[0]=val%adj;val=val/adj|0;sample[1]=val%adj;sample[2]=val/adj|0}else{sample[0]=this.bits.read(q.bits);sample[1]=this.bits.read(q.bits);sample[2]=this.bits.read(q.bits)}var scale=65536/(adj+1)|0;adj=(adj+1>>1)-1;val=(adj-sample[0])*scale;sample[0]=val*(sf>>12)+(val*(sf&4095)+2048>>12)>>12;val=(adj-sample[1])*scale;sample[1]=val*(sf>>12)+(val*(sf&4095)+2048>>12)>>12;val=(adj-sample[2])*scale;sample[2]=val*(sf>>12)+(val*(sf&4095)+2048>>12)>>12};MP2.MatrixTransform=function(s,ss,d,dp){var t01,t02,t03,t04,t05,t06,t07,t08,t09,t10,t11,t12,t13,t14,t15,t16,t17,t18,t19,t20,t21,t22,t23,t24,t25,t26,t27,t28,t29,t30,t31,t32,t33;t01=s[0][ss]+s[31][ss];t02=(s[0][ss]-s[31][ss])*.500602998235;t03=s[1][ss]+s[30][ss];t04=(s[1][ss]-s[30][ss])*.505470959898;t05=s[2][ss]+s[29][ss];t06=(s[2][ss]-s[29][ss])*.515447309923;t07=s[3][ss]+s[28][ss];t08=(s[3][ss]-s[28][ss])*.53104259109;t09=s[4][ss]+s[27][ss];t10=(s[4][ss]-s[27][ss])*.553103896034;t11=s[5][ss]+s[26][ss];t12=(s[5][ss]-s[26][ss])*.582934968206;t13=s[6][ss]+s[25][ss];t14=(s[6][ss]-s[25][ss])*.622504123036;t15=s[7][ss]+s[24][ss];t16=(s[7][ss]-s[24][ss])*.674808341455;t17=s[8][ss]+s[23][ss];t18=(s[8][ss]-s[23][ss])*.744536271002;t19=s[9][ss]+s[22][ss];t20=(s[9][ss]-s[22][ss])*.839349645416;t21=s[10][ss]+s[21][ss];t22=(s[10][ss]-s[21][ss])*.972568237862;t23=s[11][ss]+s[20][ss];t24=(s[11][ss]-s[20][ss])*1.16943993343;t25=s[12][ss]+s[19][ss];t26=(s[12][ss]-s[19][ss])*1.48416461631;t27=s[13][ss]+s[18][ss];t28=(s[13][ss]-s[18][ss])*2.05778100995;t29=s[14][ss]+s[17][ss];t30=(s[14][ss]-s[17][ss])*3.40760841847;t31=s[15][ss]+s[16][ss];t32=(s[15][ss]-s[16][ss])*10.1900081235;t33=t01+t31;t31=(t01-t31)*.502419286188;t01=t03+t29;t29=(t03-t29)*.52249861494;t03=t05+t27;t27=(t05-t27)*.566944034816;t05=t07+t25;t25=(t07-t25)*.64682178336;t07=t09+t23;t23=(t09-t23)*.788154623451;t09=t11+t21;t21=(t11-t21)*1.06067768599;t11=t13+t19;t19=(t13-t19)*1.72244709824;t13=t15+t17;t17=(t15-t17)*5.10114861869;t15=t33+t13;t13=(t33-t13)*.509795579104;t33=t01+t11;t01=(t01-t11)*.601344886935;t11=t03+t09;t09=(t03-t09)*.899976223136;t03=t05+t07;t07=(t05-t07)*2.56291544774;t05=t15+t03;t15=(t15-t03)*.541196100146;t03=t33+t11;t11=(t33-t11)*1.30656296488;t33=t05+t03;t05=(t05-t03)*.707106781187;t03=t15+t11;t15=(t15-t11)*.707106781187;t03+=t15;t11=t13+t07;t13=(t13-t07)*.541196100146;t07=t01+t09;t09=(t01-t09)*1.30656296488;t01=t11+t07;t07=(t11-t07)*.707106781187;t11=t13+t09;t13=(t13-t09)*.707106781187;t11+=t13;t01+=t11;t11+=t07;t07+=t13;t09=t31+t17;t31=(t31-t17)*.509795579104;t17=t29+t19;t29=(t29-t19)*.601344886935;t19=t27+t21;t21=(t27-t21)*.899976223136;t27=t25+t23;t23=(t25-t23)*2.56291544774;t25=t09+t27;t09=(t09-t27)*.541196100146;t27=t17+t19;t19=(t17-t19)*1.30656296488;t17=t25+t27;t27=(t25-t27)*.707106781187;t25=t09+t19;t19=(t09-t19)*.707106781187;t25+=t19;t09=t31+t23;t31=(t31-t23)*.541196100146;t23=t29+t21;t21=(t29-t21)*1.30656296488;t29=t09+t23;t23=(t09-t23)*.707106781187;t09=t31+t21;t31=(t31-t21)*.707106781187;t09+=t31;t29+=t09;t09+=t23;t23+=t31;t17+=t29;t29+=t25;t25+=t09;t09+=t27;t27+=t23;t23+=t19;t19+=t31;t21=t02+t32;t02=(t02-t32)*.502419286188;t32=t04+t30;t04=(t04-t30)*.52249861494;t30=t06+t28;t28=(t06-t28)*.566944034816;t06=t08+t26;t08=(t08-t26)*.64682178336;t26=t10+t24;t10=(t10-t24)*.788154623451;t24=t12+t22;t22=(t12-t22)*1.06067768599;t12=t14+t20;t20=(t14-t20)*1.72244709824;t14=t16+t18;t16=(t16-t18)*5.10114861869;t18=t21+t14;t14=(t21-t14)*.509795579104;t21=t32+t12;t32=(t32-t12)*.601344886935;t12=t30+t24;t24=(t30-t24)*.899976223136;t30=t06+t26;t26=(t06-t26)*2.56291544774;t06=t18+t30;t18=(t18-t30)*.541196100146;t30=t21+t12;t12=(t21-t12)*1.30656296488;t21=t06+t30;t30=(t06-t30)*.707106781187;t06=t18+t12;t12=(t18-t12)*.707106781187;t06+=t12;t18=t14+t26;t26=(t14-t26)*.541196100146;t14=t32+t24;t24=(t32-t24)*1.30656296488;t32=t18+t14;t14=(t18-t14)*.707106781187;t18=t26+t24;t24=(t26-t24)*.707106781187;t18+=t24;t32+=t18;t18+=t14;t26=t14+t24;t14=t02+t16;t02=(t02-t16)*.509795579104;t16=t04+t20;t04=(t04-t20)*.601344886935;t20=t28+t22;t22=(t28-t22)*.899976223136;t28=t08+t10;t10=(t08-t10)*2.56291544774;t08=t14+t28;t14=(t14-t28)*.541196100146;t28=t16+t20;t20=(t16-t20)*1.30656296488;t16=t08+t28;t28=(t08-t28)*.707106781187;t08=t14+t20;t20=(t14-t20)*.707106781187;t08+=t20;t14=t02+t10;t02=(t02-t10)*.541196100146;t10=t04+t22;t22=(t04-t22)*1.30656296488;t04=t14+t10;t10=(t14-t10)*.707106781187;t14=t02+t22;t02=(t02-t22)*.707106781187;t14+=t02;t04+=t14;t14+=t10;t10+=t02;t16+=t04;t04+=t08;t08+=t14;t14+=t28;t28+=t10;t10+=t20;t20+=t02;t21+=t16;t16+=t32;t32+=t04;t04+=t06;t06+=t08;t08+=t18;t18+=t14;t14+=t30;t30+=t28;t28+=t26;t26+=t10;t10+=t12;t12+=t20;t20+=t24;t24+=t02;d[dp+48]=-t33;d[dp+49]=d[dp+47]=-t21;d[dp+50]=d[dp+46]=-t17;d[dp+51]=d[dp+45]=-t16;d[dp+52]=d[dp+44]=-t01;d[dp+53]=d[dp+43]=-t32;d[dp+54]=d[dp+42]=-t29;d[dp+55]=d[dp+41]=-t04;d[dp+56]=d[dp+40]=-t03;d[dp+57]=d[dp+39]=-t06;d[dp+58]=d[dp+38]=-t25;d[dp+59]=d[dp+37]=-t08;d[dp+60]=d[dp+36]=-t11;d[dp+61]=d[dp+35]=-t18;d[dp+62]=d[dp+34]=-t09;d[dp+63]=d[dp+33]=-t14;d[dp+32]=-t05;d[dp+0]=t05;d[dp+31]=-t30;d[dp+1]=t30;d[dp+30]=-t27;d[dp+2]=t27;d[dp+29]=-t28;d[dp+3]=t28;d[dp+28]=-t07;d[dp+4]=t07;d[dp+27]=-t26;d[dp+5]=t26;d[dp+26]=-t23;d[dp+6]=t23;d[dp+25]=-t10;d[dp+7]=t10;d[dp+24]=-t15;d[dp+8]=t15;d[dp+23]=-t12;d[dp+9]=t12;d[dp+22]=-t19;d[dp+10]=t19;d[dp+21]=-t20;d[dp+11]=t20;d[dp+20]=-t13;d[dp+12]=t13;d[dp+19]=-t24;d[dp+13]=t24;d[dp+18]=-t31;d[dp+14]=t31;d[dp+17]=-t02;d[dp+15]=t02;d[dp+16]=0};MP2.FRAME_SYNC=2047;MP2.VERSION={MPEG_2_5:0,MPEG_2:2,MPEG_1:3};MP2.LAYER={III:1,II:2,I:3};MP2.MODE={STEREO:0,JOINT_STEREO:1,DUAL_CHANNEL:2,MONO:3};MP2.SAMPLE_RATE=new Uint16Array([44100,48e3,32e3,0,22050,24e3,16e3,0]);MP2.BIT_RATE=new Uint16Array([32,48,56,64,80,96,112,128,160,192,224,256,320,384,8,16,24,32,40,48,56,64,80,96,112,128,144,160]);MP2.SCALEFACTOR_BASE=new Uint32Array([33554432,26632170,21137968]);MP2.SYNTHESIS_WINDOW=new Float32Array([0,-.5,-.5,-.5,-.5,-.5,-.5,-1,-1,-1,-1,-1.5,-1.5,-2,-2,-2.5,-2.5,-3,-3.5,-3.5,-4,-4.5,-5,-5.5,-6.5,-7,-8,-8.5,-9.5,-10.5,-12,-13,-14.5,-15.5,-17.5,-19,-20.5,-22.5,-24.5,-26.5,-29,-31.5,-34,-36.5,-39.5,-42.5,-45.5,-48.5,-52,-55.5,-58.5,-62.5,-66,-69.5,-73.5,-77,-80.5,-84.5,-88,-91.5,-95,-98,-101,-104,106.5,109,111,112.5,113.5,114,114,113.5,112,110.5,107.5,104,100,94.5,88.5,81.5,73,63.5,53,41.5,28.5,14.5,-1,-18,-36,-55.5,-76.5,-98.5,-122,-147,-173.5,-200.5,-229.5,-259.5,-290.5,-322.5,-355.5,-389.5,-424,-459.5,-495.5,-532,-568.5,-605,-641.5,-678,-714,-749,-783.5,-817,-849,-879.5,-908.5,-935,-959.5,-981,-1000.5,-1016,-1028.5,-1037.5,-1042.5,-1043.5,-1040,-1031.5,1018.5,1e3,976,946.5,911,869.5,822,767.5,707,640,565.5,485,397,302.5,201,92.5,-22.5,-144,-272.5,-407,-547.5,-694,-846,-1003,-1165,-1331.5,-1502,-1675.5,-1852.5,-2031.5,-2212.5,-2394,-2576.5,-2758.5,-2939.5,-3118.5,-3294.5,-3467.5,-3635.5,-3798.5,-3955,-4104.5,-4245.5,-4377.5,-4499,-4609.5,-4708,-4792.5,-4863.5,-4919,-4958,-4979.5,-4983,-4967.5,-4931.5,-4875,-4796,-4694.5,-4569.5,-4420,-4246,-4046,-3820,-3567,3287,2979.5,2644,2280.5,1888,1467.5,1018.5,541,35,-499,-1061,-1650,-2266.5,-2909,-3577,-4270,-4987.5,-5727.5,-6490,-7274,-8077.5,-8899.5,-9739,-10594.5,-11464.5,-12347,-13241,-14144.5,-15056,-15973.5,-16895.5,-17820,-18744.5,-19668,-20588,-21503,-22410.5,-23308.5,-24195,-25068.5,-25926.5,-26767,-27589,-28389,-29166.5,-29919,-30644.5,-31342,-32009.5,-32645,-33247,-33814.5,-34346,-34839.5,-35295,-35710,-36084.5,-36417.5,-36707.5,-36954,-37156.5,-37315,-37428,-37496,37519,37496,37428,37315,37156.5,36954,36707.5,36417.5,36084.5,35710,35295,34839.5,34346,33814.5,33247,32645,32009.5,31342,30644.5,29919,29166.5,28389,27589,26767,25926.5,25068.5,24195,23308.5,22410.5,21503,20588,19668,18744.5,17820,16895.5,15973.5,15056,14144.5,13241,12347,11464.5,10594.5,9739,8899.5,8077.5,7274,6490,5727.5,4987.5,4270,3577,2909,2266.5,1650,1061,499,-35,-541,-1018.5,-1467.5,-1888,-2280.5,-2644,-2979.5,3287,3567,3820,4046,4246,4420,4569.5,4694.5,4796,4875,4931.5,4967.5,4983,4979.5,4958,4919,4863.5,4792.5,4708,4609.5,4499,4377.5,4245.5,4104.5,3955,3798.5,3635.5,3467.5,3294.5,3118.5,2939.5,2758.5,2576.5,2394,2212.5,2031.5,1852.5,1675.5,1502,1331.5,1165,1003,846,694,547.5,407,272.5,144,22.5,-92.5,-201,-302.5,-397,-485,-565.5,-640,-707,-767.5,-822,-869.5,-911,-946.5,-976,-1e3,1018.5,1031.5,1040,1043.5,1042.5,1037.5,1028.5,1016,1000.5,981,959.5,935,908.5,879.5,849,817,783.5,749,714,678,641.5,605,568.5,532,495.5,459.5,424,389.5,355.5,322.5,290.5,259.5,229.5,200.5,173.5,147,122,98.5,76.5,55.5,36,18,1,-14.5,-28.5,-41.5,-53,-63.5,-73,-81.5,-88.5,-94.5,-100,-104,-107.5,-110.5,-112,-113.5,-114,-114,-113.5,-112.5,-111,-109,106.5,104,101,98,95,91.5,88,84.5,80.5,77,73.5,69.5,66,62.5,58.5,55.5,52,48.5,45.5,42.5,39.5,36.5,34,31.5,29,26.5,24.5,22.5,20.5,19,17.5,15.5,14.5,13,12,10.5,9.5,8.5,8,7,6.5,5.5,5,4.5,4,3.5,3.5,3,2.5,2.5,2,2,1.5,1.5,1,1,1,1,.5,.5,.5,.5,.5,.5]);MP2.QUANT_LUT_STEP_1=[[0,0,1,1,1,2,2,2,2,2,2,2,2,2],[0,0,0,0,0,0,1,1,1,2,2,2,2,2]];MP2.QUANT_TAB={A:27|64,B:30|64,C:8,D:12};MP2.QUANT_LUT_STEP_2=[[MP2.QUANT_TAB.C,MP2.QUANT_TAB.C,MP2.QUANT_TAB.D],[MP2.QUANT_TAB.A,MP2.QUANT_TAB.A,MP2.QUANT_TAB.A],[MP2.QUANT_TAB.B,MP2.QUANT_TAB.A,MP2.QUANT_TAB.B]];MP2.QUANT_LUT_STEP_3=[[68,68,52,52,52,52,52,52,52,52,52,52],[67,67,67,66,66,66,66,66,66,66,66,49,49,49,49,49,49,49,49,49,49,49,49,32,32,32,32,32,32,32],[69,69,69,69,52,52,52,52,52,52,52,36,36,36,36,36,36,36,36,36,36,36,36,36,36,36,36,36,36,36]];MP2.QUANT_LUT_STEP4=[[0,1,2,17],[0,1,2,3,4,5,6,17],[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,17],[0,1,3,5,6,7,8,9,10,11,12,13,14,15,16,17],[0,1,2,4,5,6,7,8,9,10,11,12,13,14,15,17],[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]];MP2.QUANT_TAB=[{levels:3,group:1,bits:5},{levels:5,group:1,bits:7},{levels:7,group:0,bits:3},{levels:9,group:1,bits:10},{levels:15,group:0,bits:4},{levels:31,group:0,bits:5},{levels:63,group:0,bits:6},{levels:127,group:0,bits:7},{levels:255,group:0,bits:8},{levels:511,group:0,bits:9},{levels:1023,group:0,bits:10},{levels:2047,group:0,bits:11},{levels:4095,group:0,bits:12},{levels:8191,group:0,bits:13},{levels:16383,group:0,bits:14},{levels:32767,group:0,bits:15},{levels:65535,group:0,bits:16}];return MP2}();JSMpeg.Renderer.WebGL=function(){"use strict";var WebGLRenderer=function(options){this.canvas=options.canvas||document.createElement("canvas");this.width=this.canvas.width;this.height=this.canvas.height;this.enabled=true;var contextCreateOptions={preserveDrawingBuffer:!!options.preserveDrawingBuffer,alpha:false,depth:false,stencil:false,antialias:false};this.gl=this.canvas.getContext("webgl",contextCreateOptions)||this.canvas.getContext("experimental-webgl",contextCreateOptions);if(!this.gl){throw new Error("Failed to get WebGL Context")}var gl=this.gl;var vertexAttr=null;this.vertexBuffer=gl.createBuffer();var vertexCoords=new Float32Array([0,0,0,1,1,0,1,1]);gl.bindBuffer(gl.ARRAY_BUFFER,this.vertexBuffer);gl.bufferData(gl.ARRAY_BUFFER,vertexCoords,gl.STATIC_DRAW);this.program=this.createProgram(WebGLRenderer.SHADER.VERTEX_IDENTITY,WebGLRenderer.SHADER.FRAGMENT_YCRCB_TO_RGBA);vertexAttr=gl.getAttribLocation(this.program,"vertex");gl.enableVertexAttribArray(vertexAttr);gl.vertexAttribPointer(vertexAttr,2,gl.FLOAT,false,0,0);this.textureY=this.createTexture(0,"textureY");this.textureCb=this.createTexture(1,"textureCb");this.textureCr=this.createTexture(2,"textureCr");this.loadingProgram=this.createProgram(WebGLRenderer.SHADER.VERTEX_IDENTITY,WebGLRenderer.SHADER.FRAGMENT_LOADING);vertexAttr=gl.getAttribLocation(this.loadingProgram,"vertex");gl.enableVertexAttribArray(vertexAttr);gl.vertexAttribPointer(vertexAttr,2,gl.FLOAT,false,0,0);this.shouldCreateUnclampedViews=!this.allowsClampedTextureData()};WebGLRenderer.prototype.destroy=function(){var gl=this.gl;gl.deleteTexture(this.textureY);gl.deleteTexture(this.textureCb);gl.deleteTexture(this.textureCr);gl.deleteProgram(this.program);gl.deleteProgram(this.loadingProgram);gl.deleteBuffer(this.vertexBuffer)};WebGLRenderer.prototype.resize=function(width,height){this.width=width|0;this.height=height|0;this.canvas.width=this.width;this.canvas.height=this.height;this.gl.useProgram(this.program);this.gl.viewport(0,0,this.width,this.height)};WebGLRenderer.prototype.createTexture=function(index,name){var gl=this.gl;var texture=gl.createTexture();gl.bindTexture(gl.TEXTURE_2D,texture);gl.texParameteri(gl.TEXTURE_2D,gl.TEXTURE_MAG_FILTER,gl.LINEAR);gl.texParameteri(gl.TEXTURE_2D,gl.TEXTURE_MIN_FILTER,gl.LINEAR);gl.texParameteri(gl.TEXTURE_2D,gl.TEXTURE_WRAP_S,gl.CLAMP_TO_EDGE);gl.texParameteri(gl.TEXTURE_2D,gl.TEXTURE_WRAP_T,gl.CLAMP_TO_EDGE);gl.uniform1i(gl.getUniformLocation(this.program,name),index); 3 | return texture};WebGLRenderer.prototype.createProgram=function(vsh,fsh){var gl=this.gl;var program=gl.createProgram();gl.attachShader(program,this.compileShader(gl.VERTEX_SHADER,vsh));gl.attachShader(program,this.compileShader(gl.FRAGMENT_SHADER,fsh));gl.linkProgram(program);gl.useProgram(program);return program};WebGLRenderer.prototype.compileShader=function(type,source){var gl=this.gl;var shader=gl.createShader(type);gl.shaderSource(shader,source);gl.compileShader(shader);if(!gl.getShaderParameter(shader,gl.COMPILE_STATUS)){throw new Error(gl.getShaderInfoLog(shader))}return shader};WebGLRenderer.prototype.allowsClampedTextureData=function(){var gl=this.gl;var texture=gl.createTexture();gl.bindTexture(gl.TEXTURE_2D,texture);gl.texImage2D(gl.TEXTURE_2D,0,gl.LUMINANCE,1,1,0,gl.LUMINANCE,gl.UNSIGNED_BYTE,new Uint8ClampedArray([0]));return gl.getError()===0};WebGLRenderer.prototype.renderProgress=function(progress){var gl=this.gl;gl.useProgram(this.loadingProgram);var loc=gl.getUniformLocation(this.loadingProgram,"progress");gl.uniform1f(loc,progress);gl.drawArrays(gl.TRIANGLE_STRIP,0,4)};WebGLRenderer.prototype.render=function(y,cb,cr){if(!this.enabled){return}var gl=this.gl;var w=this.width+15>>4<<4,h=this.height,w2=w>>1,h2=h>>1;if(this.shouldCreateUnclampedViews){y=new Uint8Array(y.buffer),cb=new Uint8Array(cb.buffer),cr=new Uint8Array(cr.buffer)}gl.useProgram(this.program);this.updateTexture(gl.TEXTURE0,this.textureY,w,h,y);this.updateTexture(gl.TEXTURE1,this.textureCb,w2,h2,cb);this.updateTexture(gl.TEXTURE2,this.textureCr,w2,h2,cr);gl.drawArrays(gl.TRIANGLE_STRIP,0,4)};WebGLRenderer.prototype.updateTexture=function(unit,texture,w,h,data){var gl=this.gl;gl.activeTexture(unit);gl.bindTexture(gl.TEXTURE_2D,texture);gl.texImage2D(gl.TEXTURE_2D,0,gl.LUMINANCE,w,h,0,gl.LUMINANCE,gl.UNSIGNED_BYTE,data)};WebGLRenderer.IsSupported=function(){try{if(!window.WebGLRenderingContext){return false}var canvas=document.createElement("canvas");return!!(canvas.getContext("webgl")||canvas.getContext("experimental-webgl"))}catch(err){return false}};WebGLRenderer.SHADER={FRAGMENT_YCRCB_TO_RGBA:["precision mediump float;","uniform sampler2D textureY;","uniform sampler2D textureCb;","uniform sampler2D textureCr;","varying vec2 texCoord;","mat4 rec601 = mat4(","1.16438, 0.00000, 1.59603, -0.87079,","1.16438, -0.39176, -0.81297, 0.52959,","1.16438, 2.01723, 0.00000, -1.08139,","0, 0, 0, 1",");","void main() {","float y = texture2D(textureY, texCoord).r;","float cb = texture2D(textureCb, texCoord).r;","float cr = texture2D(textureCr, texCoord).r;","gl_FragColor = vec4(y, cr, cb, 1.0) * rec601;","}"].join("\n"),FRAGMENT_LOADING:["precision mediump float;","uniform float progress;","varying vec2 texCoord;","void main() {","float c = ceil(progress-(1.0-texCoord.y));","gl_FragColor = vec4(c,c,c,1);","}"].join("\n"),VERTEX_IDENTITY:["attribute vec2 vertex;","varying vec2 texCoord;","void main() {","texCoord = vertex;","gl_Position = vec4((vertex * 2.0 - 1.0) * vec2(1, -1), 0.0, 1.0);","}"].join("\n")};return WebGLRenderer}();JSMpeg.Renderer.Canvas2D=function(){"use strict";var CanvasRenderer=function(options){this.canvas=options.canvas||document.createElement("canvas");this.width=this.canvas.width;this.height=this.canvas.height;this.enabled=true;this.context=this.canvas.getContext("2d")};CanvasRenderer.prototype.destroy=function(){};CanvasRenderer.prototype.resize=function(width,height){this.width=width|0;this.height=height|0;this.canvas.width=this.width;this.canvas.height=this.height;this.imageData=this.context.getImageData(0,0,this.width,this.height);JSMpeg.Fill(this.imageData.data,255)};CanvasRenderer.prototype.renderProgress=function(progress){var w=this.canvas.width,h=this.canvas.height,ctx=this.context;ctx.fillStyle="#222";ctx.fillRect(0,0,w,h);ctx.fillStyle="#fff";ctx.fillRect(0,h-h*progress,w,h*progress)};CanvasRenderer.prototype.render=function(y,cb,cr){this.YCbCrToRGBA(y,cb,cr,this.imageData.data);this.context.putImageData(this.imageData,0,0)};CanvasRenderer.prototype.YCbCrToRGBA=function(y,cb,cr,rgba){if(!this.enabled){return}var w=this.width+15>>4<<4,w2=w>>1;var yIndex1=0,yIndex2=w,yNext2Lines=w+(w-this.width);var cIndex=0,cNextLine=w2-(this.width>>1);var rgbaIndex1=0,rgbaIndex2=this.width*4,rgbaNext2Lines=this.width*4;var cols=this.width>>1,rows=this.height>>1;var ccb,ccr,r,g,b;for(var row=0;row>8)-179;g=(ccr*88>>8)-44+(ccb*183>>8)-91;b=ccr+(ccr*198>>8)-227;var y1=y[yIndex1++];var y2=y[yIndex1++];rgba[rgbaIndex1]=y1+r;rgba[rgbaIndex1+1]=y1-g;rgba[rgbaIndex1+2]=y1+b;rgba[rgbaIndex1+4]=y2+r;rgba[rgbaIndex1+5]=y2-g;rgba[rgbaIndex1+6]=y2+b;rgbaIndex1+=8;var y3=y[yIndex2++];var y4=y[yIndex2++];rgba[rgbaIndex2]=y3+r;rgba[rgbaIndex2+1]=y3-g;rgba[rgbaIndex2+2]=y3+b;rgba[rgbaIndex2+4]=y4+r;rgba[rgbaIndex2+5]=y4-g;rgba[rgbaIndex2+6]=y4+b;rgbaIndex2+=8}yIndex1+=yNext2Lines;yIndex2+=yNext2Lines;rgbaIndex1+=rgbaNext2Lines;rgbaIndex2+=rgbaNext2Lines;cIndex+=cNextLine}};return CanvasRenderer}();JSMpeg.AudioOutput.WebAudio=function(){"use strict";var WebAudioOut=function(options){this.context=WebAudioOut.CachedContext=WebAudioOut.CachedContext||new(window.AudioContext||window.webkitAudioContext);this.gain=this.context.createGain();this.destination=this.gain;this.gain.connect(this.context.destination);this.context._connections=(this.context._connections||0)+1;this.startTime=0;this.buffer=null;this.wallclockStartTime=0;this.volume=1;this.enabled=true;this.unlocked=!WebAudioOut.NeedsUnlocking();Object.defineProperty(this,"enqueuedTime",{get:this.getEnqueuedTime})};WebAudioOut.prototype.destroy=function(){this.gain.disconnect();this.context._connections--;if(this.context._connections===0){this.context.close();WebAudioOut.CachedContext=null}};WebAudioOut.prototype.play=function(sampleRate,left,right){if(!this.enabled){return}if(!this.unlocked){var ts=JSMpeg.Now();if(this.wallclockStartTime