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:'v0.10.26',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(d,m,l,k){function g(a,b){return{}.hasOwnProperty.call(a,b)}function j(d,b){for(var a=0,c=b.length;a<c;++a)if(a in b&&b[a]===d)return!0;return!1}function i(a,b){function d(){this.constructor=a}for(var c in b)g(b,c)&&(a[c]=b[c]);return d.prototype=b.prototype,a.prototype=new d,a.__super__=b.prototype,a}var h,c,f,b,e;f=a('events',d).EventEmitter,h=a('/browser.coffee',d),e=function(d){function a(d){var a,b;this.running=!1,this.options={},this.frames=[],this.freeWorkers=[],this.activeWorkers=[],this.setOptions(d);for(a in c)b=c[a],null!=this.options[a]?this.options[a]:this.options[a]=b}return i(a,d),c={workerScript:'gif.worker.js',workers:2,repeat:0,background:'#fff',quality:10,width:null,height:null,transparent:null},b={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(b){var a,c;return function(d){for(a in b){if(!g(b,a))continue;c=b[a],d.push(this.setOption(a,c))}return d}.call(this,[])},a.prototype.addFrame=function(a,d){var c,e;null==d&&(d={}),c={},c.transparent=this.options.transparent;for(e in b)c[e]=d[e]||b[e];if(null!=this.options.width||this.setOption('width',a.width),null!=this.options.height||this.setOption('height',a.height),'undefined'!==typeof ImageData&&null!=ImageData&&a instanceof ImageData)c.data=a.data;else if('undefined'!==typeof CanvasRenderingContext2D&&null!=CanvasRenderingContext2D&&a instanceof CanvasRenderingContext2D||'undefined'!==typeof WebGLRenderingContext&&null!=WebGLRenderingContext&&a instanceof WebGLRenderingContext)d.copy?c.data=this.getContextData(a):c.context=a;else if(null!=a.childNodes)d.copy?c.data=this.getImageData(a):c.image=a;else throw new Error('Invalid image');return this.frames.push(c)},a.prototype.render=function(){var d,a;if(this.running)throw new Error('Already running');if(!(null!=this.options.width&&null!=this.options.height))throw new Error('Width and height must be set prior to rendering');this.running=!0,this.nextFrame=0,this.finishedFrames=0,this.imageParts=function(c){for(var b=function(){var 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=0,e=b.length;a<e;++a)d=b[a],c.push(null);return c}.call(this,[]),a=this.spawnWorkers();for(var c=function(){var 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=0,e=c.length;b<e;++b)d=c[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 a;return a=Math.min(this.options.workers,this.frames.length),function(){var 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).forEach(function(a){return function(c){var b;return console.log('spawning worker '+c),b=new Worker(a.options.workerScript),b.onmessage=function(a){return function(c){return a.activeWorkers.splice(a.activeWorkers.indexOf(b),1),a.freeWorkers.push(b),a.frameFinished(c.data)}}(a),a.freeWorkers.push(b)}}(this)),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,j(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,transparent:a.transparent,width:this.options.width,height:this.options.height,quality:this.options.quality,repeat:this.options.repeat,canTransfer:h.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}(f),d.exports=e}),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))

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                },
                cwd: function () {
                    return a
                },
                chdir: function (b) {
                    a = b
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        }();
    a.define('/gif.coffee', function (d, m, l, k) {
        function g(a, b) {
            return {}.hasOwnProperty.call(a, b)
        }
        function j(d, b) {
            for (var a = 0, c = b.length; a < c; ++a) if (a in b && b[a] === d) return !0;
            return !1
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        }
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                for (a in c) b = c[a], null != this.options[a] ? this.options[a] : this.options[a] = b
            }
            return i(a, d), c = {
                workerScript: 'gif.worker.js',
                workers: 2,
                repeat: 0,
                background: '#fff',
                quality: 10,
                width: null,
                height: null,
                transparent: null
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                else if ('undefined' !== typeof CanvasRenderingContext2D && null != CanvasRenderingContext2D && a instanceof CanvasRenderingContext2D || 'undefined' !== typeof WebGLRenderingContext && null != WebGLRenderingContext && a instanceof WebGLRenderingContext) d.copy ? c.data = this.getContextData(a) : c.context = a;
                else if (null != a.childNodes) d.copy ? c.data = this.getImageData(a) : c.image = a;
                else throw new Error('Invalid image');
                return this.frames.push(c)
            }, a.prototype.render = function () {
                var d, a;
                if (this.running) throw new Error('Already running');
                if (!(null != this.options.width && null != this.options.height)) throw new Error('Width and height must be set prior to rendering');
                this.running = !0, this.nextFrame = 0, this.finishedFrames = 0, this.imageParts = function (c) {
                    for (var b = function () {
                            var 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 = 0, e = b.length; a < e; ++a) d = b[a], c.push(null);
                    return c
                }.call(this, []), a = this.spawnWorkers();
                for (var c = function () {
                        var c;
                        c = [];
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                        return c
                    }.apply(this, arguments), b = 0, e = c.length; b < e; ++b) d = c[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 a;
                return a = Math.min(this.options.workers, this.frames.length), function () {
                    var 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).forEach(function (a) {
                    return function (c) {
                        var b;
                        return console.log('spawning worker ' + c), b = new Worker(a.options.workerScript), b.onmessage = function (a) {
                            return function (c) {
                                return a.activeWorkers.splice(a.activeWorkers.indexOf(b), 1), a.freeWorkers.push(b), a.frameFinished(c.data)
                            }
                        }(a), a.freeWorkers.push(b)
                    }
                }(this)), 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, j(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,
                    transparent: a.transparent,
                    width: this.options.width,
                    height: this.options.height,
                    quality: this.options.quality,
                    repeat: this.options.repeat,
                    canTransfer: h.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
        }(f), d.exports = e
    }), a.define('/browser.coffee', function (f, g, h, i) {
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            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 () {});
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            c = typeof Array.isArray === 'function' ? Array.isArray : function (a) {
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        a.prototype.setMaxListeners = function (a) {
            this._events || (this._events = {}), this._events.maxListeners = a
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            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;
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            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');
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                    var e;
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                }
                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))