gif.js

(function(c){function a(b,d){if({}.hasOwnProperty.call(a.cache,b))return a.cache[b];var e=a.resolve(b);if(!e)throw new Error('Failed to resolve module '+b);var c={id:b,require:a,filename:b,exports:{},loaded:!1,parent:d,children:[]};d&&d.children.push(c);var f=b.slice(0,b.lastIndexOf('/')+1);return a.cache[b]=c.exports,e.call(c.exports,c,c.exports,f,b),c.loaded=!0,a.cache[b]=c.exports}a.modules={},a.cache={},a.resolve=function(b){return{}.hasOwnProperty.call(a.modules,b)?a.modules[b]:void 0},a.define=function(b,c){a.modules[b]=c};var b=function(a){return a='/',{title:'browser',version:'v0.10.12',browser:!0,env:{},argv:[],nextTick:c.setImmediate||function(a){setTimeout(a,0)},cwd:function(){return a},chdir:function(b){a=b}}}();a.define('/gif.coffee',function(b,k,j,i){function c(a,b){return{}.hasOwnProperty.call(a,b)}function g(d,b){for(var a=0,c=b.length;a<c;++a)if(a in b&&b[a]===d)return!0;return!1}function h(a,b){function e(){this.constructor=a}for(var d in b)c(b,d)&&(a[d]=b[d]);return e.prototype=b.prototype,a.prototype=new e,a.__super__=b.prototype,a}var e,d,f;d=a('events',b).EventEmitter,e=a('/browser.coffee',b),f=function(f,b,d){function a(d){var a,c;this.running=!1,this.options={},this.frames=[],this.freeWorkers=[],this.activeWorkers=[],this.setOptions(d);for(a in b)c=b[a],null!=this.options[a]?this.options[a]:this.options[a]=c}return h(a,f),b={workerScript:'gif.worker.js',workers:2,repeat:0,background:'#fff',quality:10,width:null,height:null},d={delay:500,copy:!1},a.prototype.setOption=function(a,b){return this.options[a]=b,null!=this._canvas&&(a==='width'||a==='height')?this._canvas[a]=b:void 0},a.prototype.setOptions=function(a){return function(d){var b,e;for(b in a){if(!c(a,b))continue;e=a[b],d.push(this.setOption(b,e))}return d}.call(this,[])},a.prototype.addFrame=function(b,c){var a,e;null==c&&(c={}),a={};for(e in d)a[e]=c[e]||d[e];if('undefined'!==typeof ImageData&&null!=ImageData&&b instanceof ImageData)a.data=b.data,a.width=a.witdh||b.width,a.height=a.height||b.height;else if('undefined'!==typeof CanvasRenderingContext2D&&null!=CanvasRenderingContext2D&&b instanceof CanvasRenderingContext2D||'undefined'!==typeof WebGLRenderingContext&&null!=WebGLRenderingContext&&b instanceof WebGLRenderingContext)c.copy?a.data=this.getContextData(b):a.context=b;else if(null!=b.childNodes)null!=this.options.width||this.setOption('width',b.width),null!=this.options.height||this.setOption('height',b.height),c.copy?a.data=this.getImageData(b):a.image=b;else throw new Error('Invalid image');return this.frames.push(a),null!=a.width&&this.setOption('width',a.width),null!=a.height?this.setOption('height',a.height):void 0},a.prototype.render=function(){var d,a;if(this.running)throw new Error('Already running');this.running=!0,this.nextFrame=0,this.finishedFrames=0,this.imageParts=function(b){var d;for(var a=0,c=function(){var b,b;b=[];for(var a=0;0<=this.frames.length?a<this.frames.length:a>this.frames.length;0<=this.frames.length?++a:--a)b.push(a);return b}.apply(this,arguments).length;a<c;++a)d=function(){var b,b;b=[];for(var a=0;0<=this.frames.length?a<this.frames.length:a>this.frames.length;0<=this.frames.length?++a:--a)b.push(a);return b}.apply(this,arguments)[a],b.push(null);return b}.call(this,[]),a=this.spawnWorkers();for(var b=0,c=function(){var c,c;c=[];for(var b=0;0<=a?b<a:b>a;0<=a?++b:--b)c.push(b);return c}.apply(this,arguments).length;b<c;++b)d=function(){var c,c;c=[];for(var b=0;0<=a?b<a:b>a;0<=a?++b:--b)c.push(b);return c}.apply(this,arguments)[b],this.renderNextFrame();return this.emit('start'),this.emit('progress',0)},a.prototype.abort=function(){var a;while(!0){if(a=this.activeWorkers.shift(),!(null!=a))break;console.log('killing active worker'),a.terminate()}return this.running=!1,this.emit('abort')},a.prototype.spawnWorkers=function(){var e,a,b;a=Math.min(this.options.workers,this.frames.length);for(var c=0,d=function(){var c,c;c=[];for(var b=this.freeWorkers.length;this.freeWorkers.length<=a?b<a:b>a;this.freeWorkers.length<=a?++b:--b)c.push(b);return c}.apply(this,arguments).length;c<d;++c)e=function(){var c,c;c=[];for(var b=this.freeWorkers.length;this.freeWorkers.length<=a?b<a:b>a;this.freeWorkers.length<=a?++b:--b)c.push(b);return c}.apply(this,arguments)[c],(b=this,function(d){var a,c;return console.log('spawning worker '+d),c=new Worker(b.options.workerScript),a=b,c.onmessage=function(b){return a.activeWorkers.splice(a.activeWorkers.indexOf(c),1),a.freeWorkers.push(c),a.frameFinished(b.data)},b.freeWorkers.push(c)})();return a},a.prototype.frameFinished=function(a){return console.log('frame '+a.index+' finished - '+this.activeWorkers.length+' active'),this.finishedFrames++,this.emit('progress',this.finishedFrames/this.frames.length),this.imageParts[a.index]=a,g(null,this.imageParts)?this.renderNextFrame():this.finishRendering()},a.prototype.finishRendering=function(){var e,a,k,m,b,d,h;b=0;for(var f=0,j=this.imageParts.length;f<j;++f)a=this.imageParts[f],b+=(a.data.length-1)*a.pageSize+a.cursor;b+=a.pageSize-a.cursor,console.log('rendering finished - filesize '+Math.round(b/1e3)+'kb'),e=new Uint8Array(b),d=0;for(var g=0,l=this.imageParts.length;g<l;++g){a=this.imageParts[g];for(var c=0,i=a.data.length;c<i;++c)h=a.data[c],k=c,e.set(h,d),k===a.data.length-1?d+=a.cursor:d+=a.pageSize}return m=new Blob([e],{type:'image/gif'}),this.emit('finished',m,e)},a.prototype.renderNextFrame=function(){var c,a,b;if(this.freeWorkers.length===0)throw new Error('No free workers');return this.nextFrame>=this.frames.length?void 0:(c=this.frames[this.nextFrame++],b=this.freeWorkers.shift(),a=this.getTask(c),console.log('starting frame '+(a.index+1)+' of '+this.frames.length),this.activeWorkers.push(b),b.postMessage(a))},a.prototype.getContextData=function(a){return a.getImageData(0,0,this.options.width,this.options.height).data},a.prototype.getImageData=function(b){var a;return null!=this._canvas||(this._canvas=document.createElement('canvas'),this._canvas.width=this.options.width,this._canvas.height=this.options.height),a=this._canvas.getContext('2d'),a.setFill=this.options.background,a.fillRect(0,0,this.options.width,this.options.height),a.drawImage(b,0,0),this.getContextData(a)},a.prototype.getTask=function(a){var c,b;if(c=this.frames.indexOf(a),b={index:c,last:c===this.frames.length-1,delay:a.delay,width:this.options.width,height:this.options.height,quality:this.options.quality,repeat:this.options.repeat,canTransfer:e.name==='chrome'},null!=a.data)b.data=a.data;else if(null!=a.context)b.data=this.getContextData(a.context);else if(null!=a.image)b.data=this.getImageData(a.image);else throw new Error('Invalid frame');return b},a}(d),b.exports=f}),a.define('/browser.coffee',function(f,g,h,i){var a,d,e,c,b;c=navigator.userAgent.toLowerCase(),e=navigator.platform.toLowerCase(),b=c.match(/(opera|ie|firefox|chrome|version)[\s\/:]([\w\d\.]+)?.*?(safari|version[\s\/:]([\w\d\.]+)|$)/)||[null,'unknown',0],d=b[1]==='ie'&&document.documentMode,a={name:b[1]==='version'?b[3]:b[1],version:d||parseFloat(b[1]==='opera'&&b[4]?b[4]:b[2]),platform:{name:c.match(/ip(?:ad|od|hone)/)?'ios':(c.match(/(?:webos|android)/)||e.match(/mac|win|linux/)||['other'])[0]}},a[a.name]=!0,a[a.name+parseInt(a.version,10)]=!0,a.platform[a.platform.name]=!0,f.exports=a}),a.define('events',function(f,e,g,h){b.EventEmitter||(b.EventEmitter=function(){});var a=e.EventEmitter=b.EventEmitter,c=typeof Array.isArray==='function'?Array.isArray:function(a){return Object.prototype.toString.call(a)==='[object Array]'},d=10;a.prototype.setMaxListeners=function(a){this._events||(this._events={}),this._events.maxListeners=a},a.prototype.emit=function(f){if(f==='error'&&(!(this._events&&this._events.error)||c(this._events.error)&&!this._events.error.length))throw arguments[1]instanceof Error?arguments[1]:new Error("Uncaught, unspecified 'error' event.");if(!this._events)return!1;var a=this._events[f];if(!a)return!1;if(!(typeof a=='function'))if(c(a)){var b=Array.prototype.slice.call(arguments,1),e=a.slice();for(var d=0,g=e.length;d<g;d++)e[d].apply(this,b);return!0}else return!1;switch(arguments.length){case 1:a.call(this);break;case 2:a.call(this,arguments[1]);break;case 3:a.call(this,arguments[1],arguments[2]);break;default:var b=Array.prototype.slice.call(arguments,1);a.apply(this,b)}return!0},a.prototype.addListener=function(a,b){if('function'!==typeof b)throw new Error('addListener only takes instances of Function');if(this._events||(this._events={}),this.emit('newListener',a,b),!this._events[a])this._events[a]=b;else if(c(this._events[a])){if(!this._events[a].warned){var e;this._events.maxListeners!==undefined?e=this._events.maxListeners:e=d,e&&e>0&&this._events[a].length>e&&(this._events[a].warned=!0,console.error('(node) warning: possible EventEmitter memory leak detected. %d listeners added. Use emitter.setMaxListeners() to increase limit.',this._events[a].length),console.trace())}this._events[a].push(b)}else this._events[a]=[this._events[a],b];return this},a.prototype.on=a.prototype.addListener,a.prototype.once=function(b,c){var a=this;return a.on(b,function d(){a.removeListener(b,d),c.apply(this,arguments)}),this},a.prototype.removeListener=function(a,d){if('function'!==typeof d)throw new Error('removeListener only takes instances of Function');if(!(this._events&&this._events[a]))return this;var b=this._events[a];if(c(b)){var e=b.indexOf(d);if(e<0)return this;b.splice(e,1),b.length==0&&delete this._events[a]}else this._events[a]===d&&delete this._events[a];return this},a.prototype.removeAllListeners=function(a){return a&&this._events&&this._events[a]&&(this._events[a]=null),this},a.prototype.listeners=function(a){return this._events||(this._events={}),this._events[a]||(this._events[a]=[]),c(this._events[a])||(this._events[a]=[this._events[a]]),this._events[a]}}),c.GIF=a('/gif.coffee')}.call(this,this))
/*
//@ sourceMappingURL=gif.js.map
*/
// gif.js 0.1.2 - https://github.com/jnordberg/gif.js