gif.js from https://github.com/jnordberg/gif.js
目前為
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.gf.qytechs.cn/scripts/2963/8459/gifjs.js
// ==UserScript==
// @name gif.js
// @namespace http://mfish.twbbs.org/
// @version 0.1.6
// @grant none
// ==/UserScript==
/**
*
* I didn't create this, just modified it to allow it running in userscript.
* Auther : https://github.com/jnordberg/gif.js
*
*/
var GIF_worker_URL = (function () {
var workerScript = "(function(b){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},a.define('/gif.worker.coffee',function(d,e,f,g){var b,c;b=a('/GIFEncoder.js',d),c=function(a){var c,e,d,f;return c=new b(a.width,a.height),a.index===0?c.writeHeader():c.firstFrame=!1,c.setTransparent(a.transparent),c.setRepeat(a.repeat),c.setDelay(a.delay),c.setQuality(a.quality),c.setDither(a.dither),c.setGlobalPalette(a.globalPalette),c.addFrame(a.data),a.last&&c.finish(),a.globalPalette===!0&&(a.globalPalette=c.getGlobalPalette()),d=c.stream(),a.data=d.pages,a.cursor=d.cursor,a.pageSize=d.constructor.pageSize,a.canTransfer?(f=function(c){for(var b=0,d=a.data.length;b<d;++b)e=a.data[b],c.push(e.buffer);return c}.call(this,[]),self.postMessage(a,f)):self.postMessage(a)},self.onmessage=function(a){return c(a.data)}}),a.define('/GIFEncoder.js',function(e,h,i,j){function c(){this.page=-1,this.pages=[],this.newPage()}function b(a,b){this.width=~~a,this.height=~~b,this.transparent=null,this.transIndex=0,this.repeat=-1,this.delay=0,this.image=null,this.pixels=null,this.indexedPixels=null,this.colorDepth=null,this.colorTab=null,this.usedEntry=new Array,this.palSize=7,this.dispose=-1,this.firstFrame=!0,this.sample=10,this.dither=!1,this.globalPalette=!1,this.out=new c}var f=a('/TypedNeuQuant.js',e),g=a('/LZWEncoder.js',e);c.pageSize=4096,c.charMap={};for(var d=0;d<256;d++)c.charMap[d]=String.fromCharCode(d);c.prototype.newPage=function(){this.pages[++this.page]=new Uint8Array(c.pageSize),this.cursor=0},c.prototype.getData=function(){var d='';for(var a=0;a<this.pages.length;a++)for(var b=0;b<c.pageSize;b++)d+=c.charMap[this.pages[a][b]];return d},c.prototype.writeByte=function(a){this.cursor>=c.pageSize&&this.newPage(),this.pages[this.page][this.cursor++]=a},c.prototype.writeUTFBytes=function(b){for(var c=b.length,a=0;a<c;a++)this.writeByte(b.charCodeAt(a))},c.prototype.writeBytes=function(b,d,e){for(var c=e||b.length,a=d||0;a<c;a++)this.writeByte(b[a])},b.prototype.setDelay=function(a){this.delay=Math.round(a/10)},b.prototype.setFrameRate=function(a){this.delay=Math.round(100/a)},b.prototype.setDispose=function(a){a>=0&&(this.dispose=a)},b.prototype.setRepeat=function(a){this.repeat=a},b.prototype.setTransparent=function(a){this.transparent=a},b.prototype.addFrame=function(a){this.image=a,this.colorTab=this.globalPalette.slice?this.globalPalette:null,this.getImagePixels(),this.analyzePixels(),this.globalPalette===!0&&(this.globalPalette=this.colorTab),this.firstFrame&&(this.writeLSD(),this.writePalette(),this.repeat>=0&&this.writeNetscapeExt()),this.writeGraphicCtrlExt(),this.writeImageDesc(),this.firstFrame||this.globalPalette||this.writePalette(),this.writePixels(),this.firstFrame=!1},b.prototype.finish=function(){this.out.writeByte(59)},b.prototype.setQuality=function(a){a<1&&(a=1),this.sample=a},b.prototype.setDither=function(a){a===!0&&(a='FloydSteinberg'),this.dither=a},b.prototype.setGlobalPalette=function(a){this.globalPalette=a},b.prototype.getGlobalPalette=function(){return this.globalPalette.slice&&this.globalPalette.slice(0)||this.globalPalette},b.prototype.writeHeader=function(){this.out.writeUTFBytes('GIF89a')},b.prototype.analyzePixels=function(){if(!this.colorTab){var a=new f(this.pixels,this.sample);a.buildColormap(),this.colorTab=a.getColormap()}this.dither?this.ditherPixels(this.dither.replace('-serpentine',''),this.dither.match(/-serpentine/)!==null):this.indexPixels(),this.pixels=null,this.colorDepth=8,this.palSize=7,this.transparent!==null&&(this.transIndex=this.findClosest(this.transparent,!0))},b.prototype.indexPixels=function(e){var c=this.pixels.length/3;this.indexedPixels=new Uint8Array(c);var a=0;for(var b=0;b<c;b++){var d=this.findClosestRGB(this.pixels[a++]&255,this.pixels[a++]&255,this.pixels[a++]&255);this.usedEntry[d]=!0,this.indexedPixels[b]=d}},b.prototype.ditherPixels=function(l,A){var o={FalseFloydSteinberg:[[.375,1,0],[.375,0,1],[.25,1,1]],FloydSteinberg:[[.4375,1,0],[.1875,-1,1],[.3125,0,1],[.0625,1,1]],Stucki:[[.19047619047619047,1,0],[.09523809523809523,2,0],[.047619047619047616,-2,1],[.09523809523809523,-1,1],[.19047619047619047,0,1],[.09523809523809523,1,1],[.047619047619047616,2,1],[.023809523809523808,-2,2],[.047619047619047616,-1,2],[.09523809523809523,0,2],[.047619047619047616,1,2],[.023809523809523808,2,2]],Atkinson:[[.125,1,0],[.125,2,0],[.125,-1,1],[.125,0,1],[.125,1,1],[.125,0,2]]};if(!(l&&o[l]))throw'Unknown dithering kernel: '+l;var f=o[l],i=0,r=this.height,e=this.width,b=this.pixels,c=A?-1:1;this.indexedPixels=new Uint8Array(this.pixels.length/3);for(var h=0;h<r;h++){A&&(c*=-1);for(var g=c==1?0:e-1,z=c==1?e:0;g!==z;g+=c){i=h*e+g;var a=i*3,n=b[a],p=b[a+1],q=b[a+2];a=this.findClosestRGB(n,p,q),this.usedEntry[a]=!0,this.indexedPixels[i]=a,a*=3;var x=this.colorTab[a],s=this.colorTab[a+1],t=this.colorTab[a+2],u=n-x,v=p-s,w=q-t;for(var d=c==1?0:f.length-1,y=c==1?f.length:0;d!==y;d+=c){var k=f[d][1],j=f[d][2];if(k+g>=0&&k+g<e&&j+h>=0&&j+h<r){var m=f[d][0];a=i+k+j*e,a*=3,b[a]=Math.max(0,Math.min(255,b[a]+u*m)),b[a+1]=Math.max(0,Math.min(255,b[a+1]+v*m)),b[a+2]=Math.max(0,Math.min(255,b[a+2]+w*m))}}}}},b.prototype.findClosest=function(a,b){return this.findClosestRGB((a&16711680)>>16,(a&65280)>>8,a&255,b)},b.prototype.findClosestRGB=function(j,l,k,n){if(this.colorTab===null)return-1;var m=k|l<<8|j<<16,g=0,b=16777216,i=this.colorTab.length;for(var a=0;a<i;){var f=j-(this.colorTab[a++]&255),e=l-(this.colorTab[a++]&255),d=k-(this.colorTab[a]&255),c=f*f+e*e+d*d,h=parseInt(a/3);(!n||this.usedEntry[h])&&c<b&&(b=c,g=h),a++}return g},b.prototype.getImagePixels=function(){var a=this.width,g=this.height;this.pixels=new Uint8Array(a*g*3);var b=this.image,c=0;for(var d=0;d<g;d++)for(var e=0;e<a;e++){var f=d*a*4+e*4;this.pixels[c++]=b[f],this.pixels[c++]=b[f+1],this.pixels[c++]=b[f+2]}},b.prototype.writeGraphicCtrlExt=function(){this.out.writeByte(33),this.out.writeByte(249),this.out.writeByte(4);var b,a;this.transparent===null?(b=0,a=0):(b=1,a=2),this.dispose>=0&&(a=dispose&7),a<<=2,this.out.writeByte(0|a|0|b),this.writeShort(this.delay),this.out.writeByte(this.transIndex),this.out.writeByte(0)},b.prototype.writeImageDesc=function(){this.out.writeByte(44),this.writeShort(0),this.writeShort(0),this.writeShort(this.width),this.writeShort(this.height),this.firstFrame||this.globalPalette?this.out.writeByte(0):this.out.writeByte(128|this.palSize)},b.prototype.writeLSD=function(){this.writeShort(this.width),this.writeShort(this.height),this.out.writeByte(240|this.palSize),this.out.writeByte(0),this.out.writeByte(0)},b.prototype.writeNetscapeExt=function(){this.out.writeByte(33),this.out.writeByte(255),this.out.writeByte(11),this.out.writeUTFBytes('NETSCAPE2.0'),this.out.writeByte(3),this.out.writeByte(1),this.writeShort(this.repeat),this.out.writeByte(0)},b.prototype.writePalette=function(){this.out.writeBytes(this.colorTab);var b=768-this.colorTab.length;for(var a=0;a<b;a++)this.out.writeByte(0)},b.prototype.writeShort=function(a){this.out.writeByte(a&255),this.out.writeByte(a>>8&255)},b.prototype.writePixels=function(){var a=new g(this.width,this.height,this.indexedPixels,this.colorDepth);a.encode(this.out)},b.prototype.stream=function(){return this.out},e.exports=b}),a.define('/LZWEncoder.js',function(e,g,h,i){function f(y,D,C,B){function w(a,b){r[f++]=a,f>=254&&t(b)}function x(b){u(a),k=i+2,j=!0,l(i,b)}function u(b){for(var a=0;a<b;++a)h[a]=-1}function A(z,r){var g,t,d,e,y,w,s;for(q=z,j=!1,n_bits=q,m=p(n_bits),i=1<<z-1,o=i+1,k=i+2,f=0,e=v(),s=0,g=a;g<65536;g*=2)++s;s=8-s,w=a,u(w),l(i,r);a:while((t=v())!=c){if(g=(t<<b)+e,d=t<<s^e,h[d]===g){e=n[d];continue}if(h[d]>=0){y=w-d,d===0&&(y=1);do if((d-=y)<0&&(d+=w),h[d]===g){e=n[d];continue a}while(h[d]>=0)}l(e,r),e=t,k<1<<b?(n[d]=k++,h[d]=g):x(r)}l(e,r),l(o,r)}function z(a){a.writeByte(s),remaining=y*D,curPixel=0,A(s+1,a),a.writeByte(0)}function t(a){f>0&&(a.writeByte(f),a.writeBytes(r,0,f),f=0)}function p(a){return(1<<a)-1}function v(){if(remaining===0)return c;--remaining;var a=C[curPixel++];return a&255}function l(a,c){g&=d[e],e>0?g|=a<<e:g=a,e+=n_bits;while(e>=8)w(g&255,c),g>>=8,e-=8;if((k>m||j)&&(j?(m=p(n_bits=q),j=!1):(++n_bits,n_bits==b?m=1<<b:m=p(n_bits))),a==o){while(e>0)w(g&255,c),g>>=8,e-=8;t(c)}}var s=Math.max(2,B),r=new Uint8Array(256),h=new Int32Array(a),n=new Int32Array(a),g,e=0,f,k=0,m,j=!1,q,i,o;this.encode=z}var c=-1,b=12,a=5003,d=[0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535];e.exports=f}),a.define('/TypedNeuQuant.js',function(A,F,E,D){function C(A,B){function I(){o=[],q=new Int32Array(256),t=new Int32Array(a),y=new Int32Array(a),z=new Int32Array(a>>3);var c,d;for(c=0;c<a;c++)d=(c<<b+8)/a,o[c]=new Float64Array([d,d,d,0]),y[c]=e/a,t[c]=0}function J(){for(var c=0;c<a;c++)o[c][0]>>=b,o[c][1]>>=b,o[c][2]>>=b,o[c][3]=c}function K(b,a,c,e,f){o[a][0]-=b*(o[a][0]-c)/d,o[a][1]-=b*(o[a][1]-e)/d,o[a][2]-=b*(o[a][2]-f)/d}function L(j,e,n,l,k){var h=Math.abs(e-j),i=Math.min(e+j,a),g=e+1,f=e-1,m=1,b,d;while(g<i||f>h)d=z[m++],g<i&&(b=o[g++],b[0]-=d*(b[0]-n)/c,b[1]-=d*(b[1]-l)/c,b[2]-=d*(b[2]-k)/c),f>h&&(b=o[f--],b[0]-=d*(b[0]-n)/c,b[1]-=d*(b[1]-l)/c,b[2]-=d*(b[2]-k)/c)}function C(p,s,q){var h=2147483647,k=h,d=-1,m=d,c,j,e,n,l;for(c=0;c<a;c++)j=o[c],e=Math.abs(j[0]-p)+Math.abs(j[1]-s)+Math.abs(j[2]-q),e<h&&(h=e,d=c),n=e-(t[c]>>i-b),n<k&&(k=n,m=c),l=y[c]>>g,y[c]-=l,t[c]+=l<<f;return y[d]+=x,t[d]-=r,m}function D(){var d,b,e,c,h,g,f=0,i=0;for(d=0;d<a;d++){for(e=o[d],h=d,g=e[1],b=d+1;b<a;b++)c=o[b],c[1]<g&&(h=b,g=c[1]);if(c=o[h],d!=h&&(b=c[0],c[0]=e[0],e[0]=b,b=c[1],c[1]=e[1],e[1]=b,b=c[2],c[2]=e[2],e[2]=b,b=c[3],c[3]=e[3],e[3]=b),g!=f){for(q[f]=i+d>>1,b=f+1;b<g;b++)q[b]=d;f=g,i=d}}for(q[f]=i+n>>1,b=f+1;b<256;b++)q[b]=n}function E(j,i,k){var b,d,c,e=1e3,h=-1,f=q[i],g=f-1;while(f<a||g>=0)f<a&&(d=o[f],c=d[1]-i,c>=e?f=a:(f++,c<0&&(c=-c),b=d[0]-j,b<0&&(b=-b),c+=b,c<e&&(b=d[2]-k,b<0&&(b=-b),c+=b,c<e&&(e=c,h=d[3])))),g>=0&&(d=o[g],c=i-d[1],c>=e?g=-1:(g--,c<0&&(c=-c),b=d[0]-j,b<0&&(b=-b),c+=b,c<e&&(b=d[2]-k,b<0&&(b=-b),c+=b,c<e&&(e=c,h=d[3]))));return h}function F(){var c,f=A.length,D=30+(B-1)/3,y=f/(3*B),q=~~(y/w),n=d,o=u,a=o>>h;for(a<=1&&(a=0),c=0;c<a;c++)z[c]=n*((a*a-c*c)*m/(a*a));var i;f<s?(B=1,i=3):f%l!==0?i=3*l:f%k!==0?i=3*k:f%p!==0?i=3*p:i=3*j;var r,t,x,e,g=0;c=0;while(c<y)if(r=(A[g]&255)<<b,t=(A[g+1]&255)<<b,x=(A[g+2]&255)<<b,e=C(r,t,x),K(n,e,r,t,x),a!==0&&L(a,e,r,t,x),g+=i,g>=f&&(g-=f),c++,q===0&&(q=1),c%q===0)for(n-=n/D,o-=o/v,a=o>>h,a<=1&&(a=0),e=0;e<a;e++)z[e]=n*((a*a-e*e)*m/(a*a))}function G(){I(),F(),J(),D()}function H(){var b=[],g=[];for(var c=0;c<a;c++)g[o[c][3]]=c;var d=0;for(var e=0;e<a;e++){var f=g[e];b[d++]=o[f][0],b[d++]=o[f][1],b[d++]=o[f][2]}return b}var o,q,t,y,z;this.buildColormap=G,this.getColormap=H,this.lookupRGB=E}var w=100,a=256,n=a-1,b=4,i=16,e=1<<i,f=10,B=1<<f,g=10,x=e>>g,r=e<<f-g,z=a>>3,h=6,t=1<<h,u=z*t,v=30,o=10,d=1<<o,q=8,m=1<<q,y=o+q,c=1<<y,l=499,k=491,p=487,j=503,s=3*j;A.exports=C}),a('/gif.worker.coffee')}.call(this,this))";
function getUrl (blob) {
return URL.createObjectURL(blob);
}
function createBlob (text, MIME) {
var aFileParts = [text];
var oMyBlob = new Blob(aFileParts, {type : MIME});
return oMyBlob;
}
var workerURL = getUrl(createBlob(workerScript, 'application/x-javascript'));
return workerURL;
}());
// Generated by CommonJS Everywhere 0.9.7
(function (global) {
function require(file, parentModule) {
if ({}.hasOwnProperty.call(require.cache, file))
return require.cache[file];
var resolved = require.resolve(file);
if (!resolved)
throw new Error('Failed to resolve module ' + file);
var module$ = {
id: file,
require: require,
filename: file,
exports: {},
loaded: false,
parent: parentModule,
children: []
};
if (parentModule)
parentModule.children.push(module$);
var dirname = file.slice(0, file.lastIndexOf('/') + 1);
require.cache[file] = module$.exports;
resolved.call(module$.exports, module$, module$.exports, dirname, file);
module$.loaded = true;
return require.cache[file] = module$.exports;
}
require.modules = {};
require.cache = {};
require.resolve = function (file) {
return {}.hasOwnProperty.call(require.modules, file) ? require.modules[file] : void 0;
};
require.define = function (file, fn) {
require.modules[file] = fn;
};
var process = function () {
var cwd = '/';
return {
title: 'browser',
version: 'v0.10.26',
browser: true,
env: {},
argv: [],
nextTick: global.setImmediate || function (fn) {
setTimeout(fn, 0);
},
cwd: function () {
return cwd;
},
chdir: function (dir) {
cwd = dir;
}
};
}();
require.define('/gif.coffee', function (module, exports, __dirname, __filename) {
var browser, defaults, EventEmitter, frameDefaults, GIF;
EventEmitter = require('events', module).EventEmitter;
browser = require('/browser.coffee', module);
GIF = function (super$) {
extends$(GIF, super$);
defaults = {
workerScript: 'gif.worker.js',
workers: 2,
repeat: 0,
background: '#fff',
quality: 10,
width: null,
height: null,
transparent: null
};
frameDefaults = {
delay: 500,
copy: false
};
function GIF(options) {
var key, value;
this.running = false;
this.options = {};
this.frames = [];
this.freeWorkers = [];
this.activeWorkers = [];
this.setOptions(options);
for (key in defaults) {
value = defaults[key];
if (null != this.options[key])
this.options[key];
else
this.options[key] = value;
}
}
GIF.prototype.setOption = function (key, value) {
this.options[key] = value;
if (null != this._canvas && (key === 'width' || key === 'height'))
return this._canvas[key] = value;
};
GIF.prototype.setOptions = function (options) {
var key, value;
return function (accum$) {
for (key in options) {
if (!isOwn$(options, key))
continue;
value = options[key];
accum$.push(this.setOption(key, value));
}
return accum$;
}.call(this, []);
};
GIF.prototype.addFrame = function (image, options) {
var frame, key;
if (null == options)
options = {};
frame = {};
frame.transparent = this.options.transparent;
for (key in frameDefaults) {
frame[key] = options[key] || frameDefaults[key];
}
if (!(null != this.options.width))
this.setOption('width', image.width);
if (!(null != this.options.height))
this.setOption('height', image.height);
if ('undefined' !== typeof ImageData && null != ImageData && image instanceof ImageData) {
frame.data = image.data;
} else if ('undefined' !== typeof CanvasRenderingContext2D && null != CanvasRenderingContext2D && image instanceof CanvasRenderingContext2D || 'undefined' !== typeof WebGLRenderingContext && null != WebGLRenderingContext && image instanceof WebGLRenderingContext) {
if (options.copy) {
frame.data = this.getContextData(image);
} else {
frame.context = image;
}
} else if (null != image.childNodes) {
if (options.copy) {
frame.data = this.getImageData(image);
} else {
frame.image = image;
}
} else {
throw new Error('Invalid image');
}
return this.frames.push(frame);
};
GIF.prototype.render = function () {
var i, numWorkers;
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 = true;
this.nextFrame = 0;
this.finishedFrames = 0;
this.imageParts = function (accum$) {
for (var cache$ = function () {
var accum$1;
accum$1 = [];
for (var i$ = 0; 0 <= this.frames.length ? i$ < this.frames.length : i$ > this.frames.length; 0 <= this.frames.length ? ++i$ : --i$)
accum$1.push(i$);
return accum$1;
}.apply(this, arguments), i$ = 0, length$ = cache$.length; i$ < length$; ++i$) {
i = cache$[i$];
accum$.push(null);
}
return accum$;
}.call(this, []);
numWorkers = this.spawnWorkers();
if (this.options.globalPalette === true) {
this.renderNextFrame();
} else {
for (var cache$1 = function () {
var accum$1;
accum$1 = [];
for (var i$1 = 0; 0 <= numWorkers ? i$1 < numWorkers : i$1 > numWorkers; 0 <= numWorkers ? ++i$1 : --i$1)
accum$1.push(i$1);
return accum$1;
}.apply(this, arguments), i$1 = 0, length$1 = cache$1.length; i$1 < length$1; ++i$1) {
i = cache$1[i$1];
this.renderNextFrame();
}
}
this.emit('start');
return this.emit('progress', 0);
};
GIF.prototype.abort = function () {
var worker;
while (true) {
worker = this.activeWorkers.shift();
if (!(null != worker))
break;
console.log('killing active worker');
worker.terminate();
}
this.running = false;
return this.emit('abort');
};
GIF.prototype.spawnWorkers = function () {
var numWorkers;
numWorkers = Math.min(this.options.workers, this.frames.length);
(function () {
var accum$;
accum$ = [];
for (var i$ = this.freeWorkers.length; this.freeWorkers.length <= numWorkers ? i$ < numWorkers : i$ > numWorkers; this.freeWorkers.length <= numWorkers ? ++i$ : --i$)
accum$.push(i$);
return accum$;
}.apply(this, arguments).forEach(function (this$) {
return function (i) {
var worker;
console.log('spawning worker ' + i);
worker = new Worker(this$.options.workerScript);
worker.onmessage = function (this$1) {
return function (event) {
this$1.activeWorkers.splice(this$1.activeWorkers.indexOf(worker), 1);
this$1.freeWorkers.push(worker);
return this$1.frameFinished(event.data);
};
}(this$);
return this$.freeWorkers.push(worker);
};
}(this)));
return numWorkers;
};
GIF.prototype.frameFinished = function (frame) {
var i;
console.log('frame ' + frame.index + ' finished - ' + this.activeWorkers.length + ' active');
this.finishedFrames++;
this.emit('progress', this.finishedFrames / this.frames.length);
this.imageParts[frame.index] = frame;
if (this.options.globalPalette === true) {
this.options.globalPalette = frame.globalPalette;
console.log('global palette analyzed');
if (this.frames.length > 2)
for (var cache$ = function () {
var accum$;
accum$ = [];
for (var i$ = 1; 1 <= this.freeWorkers.length ? i$ < this.freeWorkers.length : i$ > this.freeWorkers.length; 1 <= this.freeWorkers.length ? ++i$ : --i$)
accum$.push(i$);
return accum$;
}.apply(this, arguments), i$ = 0, length$ = cache$.length; i$ < length$; ++i$) {
i = cache$[i$];
this.renderNextFrame();
}
}
if (in$(null, this.imageParts)) {
return this.renderNextFrame();
} else {
return this.finishRendering();
}
};
GIF.prototype.finishRendering = function () {
var data, frame, i, image, len, offset, page;
len = 0;
for (var i$ = 0, length$ = this.imageParts.length; i$ < length$; ++i$) {
frame = this.imageParts[i$];
len += (frame.data.length - 1) * frame.pageSize + frame.cursor;
}
len += frame.pageSize - frame.cursor;
console.log('rendering finished - filesize ' + Math.round(len / 1e3) + 'kb');
data = new Uint8Array(len);
offset = 0;
for (var i$1 = 0, length$1 = this.imageParts.length; i$1 < length$1; ++i$1) {
frame = this.imageParts[i$1];
for (var i$2 = 0, length$2 = frame.data.length; i$2 < length$2; ++i$2) {
page = frame.data[i$2];
i = i$2;
data.set(page, offset);
if (i === frame.data.length - 1) {
offset += frame.cursor;
} else {
offset += frame.pageSize;
}
}
}
image = new Blob([data], { type: 'image/gif' });
return this.emit('finished', image, data);
};
GIF.prototype.renderNextFrame = function () {
var frame, task, worker;
if (this.freeWorkers.length === 0)
throw new Error('No free workers');
if (this.nextFrame >= this.frames.length)
return;
frame = this.frames[this.nextFrame++];
worker = this.freeWorkers.shift();
task = this.getTask(frame);
console.log('starting frame ' + (task.index + 1) + ' of ' + this.frames.length);
this.activeWorkers.push(worker);
return worker.postMessage(task);
};
GIF.prototype.getContextData = function (ctx) {
return ctx.getImageData(0, 0, this.options.width, this.options.height).data;
};
GIF.prototype.getImageData = function (image) {
var ctx;
if (!(null != this._canvas)) {
this._canvas = document.createElement('canvas');
this._canvas.width = this.options.width;
this._canvas.height = this.options.height;
}
ctx = this._canvas.getContext('2d');
ctx.setFill = this.options.background;
ctx.fillRect(0, 0, this.options.width, this.options.height);
ctx.drawImage(image, 0, 0);
return this.getContextData(ctx);
};
GIF.prototype.getTask = function (frame) {
var index, task;
index = this.frames.indexOf(frame);
task = {
index: index,
last: index === this.frames.length - 1,
delay: frame.delay,
transparent: frame.transparent,
width: this.options.width,
height: this.options.height,
quality: this.options.quality,
dither: this.options.dither,
globalPalette: this.options.globalPalette,
repeat: this.options.repeat,
canTransfer: browser.name === 'chrome'
};
if (null != frame.data) {
task.data = frame.data;
} else if (null != frame.context) {
task.data = this.getContextData(frame.context);
} else if (null != frame.image) {
task.data = this.getImageData(frame.image);
} else {
throw new Error('Invalid frame');
}
return task;
};
return GIF;
}(EventEmitter);
module.exports = GIF;
function isOwn$(o, p) {
return {}.hasOwnProperty.call(o, p);
}
function in$(member, list) {
for (var i = 0, length = list.length; i < length; ++i)
if (i in list && list[i] === member)
return true;
return false;
}
function extends$(child, parent) {
for (var key in parent)
if (isOwn$(parent, key))
child[key] = parent[key];
function ctor() {
this.constructor = child;
}
ctor.prototype = parent.prototype;
child.prototype = new ctor;
child.__super__ = parent.prototype;
return child;
}
});
require.define('/browser.coffee', function (module, exports, __dirname, __filename) {
var browser, mode, platform, ua, UA;
ua = navigator.userAgent.toLowerCase();
platform = navigator.platform.toLowerCase();
UA = ua.match(/(opera|ie|firefox|chrome|version)[\s\/:]([\w\d\.]+)?.*?(safari|version[\s\/:]([\w\d\.]+)|$)/) || [
null,
'unknown',
0
];
mode = UA[1] === 'ie' && document.documentMode;
browser = {
name: UA[1] === 'version' ? UA[3] : UA[1],
version: mode || parseFloat(UA[1] === 'opera' && UA[4] ? UA[4] : UA[2]),
platform: { name: ua.match(/ip(?:ad|od|hone)/) ? 'ios' : (ua.match(/(?:webos|android)/) || platform.match(/mac|win|linux/) || ['other'])[0] }
};
browser[browser.name] = true;
browser[browser.name + parseInt(browser.version, 10)] = true;
browser.platform[browser.platform.name] = true;
module.exports = browser;
function isOwn$(o, p) {
return {}.hasOwnProperty.call(o, p);
}
function in$(member, list) {
for (var i = 0, length = list.length; i < length; ++i)
if (i in list && list[i] === member)
return true;
return false;
}
function extends$(child, parent) {
for (var key in parent)
if (isOwn$(parent, key))
child[key] = parent[key];
function ctor() {
this.constructor = child;
}
ctor.prototype = parent.prototype;
child.prototype = new ctor;
child.__super__ = parent.prototype;
return child;
}
});
require.define('events', function (module, exports, __dirname, __filename) {
if (!process.EventEmitter)
process.EventEmitter = function () {
};
var EventEmitter = exports.EventEmitter = process.EventEmitter;
var isArray = typeof Array.isArray === 'function' ? Array.isArray : function (xs) {
return Object.prototype.toString.call(xs) === '[object Array]';
};
var defaultMaxListeners = 10;
EventEmitter.prototype.setMaxListeners = function (n) {
if (!this._events)
this._events = {};
this._events.maxListeners = n;
};
EventEmitter.prototype.emit = function (type) {
if (type === 'error') {
if (!this._events || !this._events.error || isArray(this._events.error) && !this._events.error.length) {
if (arguments[1] instanceof Error) {
throw arguments[1];
} else {
throw new Error("Uncaught, unspecified 'error' event.");
}
return false;
}
}
if (!this._events)
return false;
var handler = this._events[type];
if (!handler)
return false;
if (typeof handler == 'function') {
switch (arguments.length) {
case 1:
handler.call(this);
break;
case 2:
handler.call(this, arguments[1]);
break;
case 3:
handler.call(this, arguments[1], arguments[2]);
break;
default:
var args = Array.prototype.slice.call(arguments, 1);
handler.apply(this, args);
}
return true;
} else if (isArray(handler)) {
var args = Array.prototype.slice.call(arguments, 1);
var listeners = handler.slice();
for (var i = 0, l = listeners.length; i < l; i++) {
listeners[i].apply(this, args);
}
return true;
} else {
return false;
}
};
EventEmitter.prototype.addListener = function (type, listener) {
if ('function' !== typeof listener) {
throw new Error('addListener only takes instances of Function');
}
if (!this._events)
this._events = {};
this.emit('newListener', type, listener);
if (!this._events[type]) {
this._events[type] = listener;
} else if (isArray(this._events[type])) {
if (!this._events[type].warned) {
var m;
if (this._events.maxListeners !== undefined) {
m = this._events.maxListeners;
} else {
m = defaultMaxListeners;
}
if (m && m > 0 && this._events[type].length > m) {
this._events[type].warned = true;
console.error('(node) warning: possible EventEmitter memory ' + 'leak detected. %d listeners added. ' + 'Use emitter.setMaxListeners() to increase limit.', this._events[type].length);
console.trace();
}
}
this._events[type].push(listener);
} else {
this._events[type] = [
this._events[type],
listener
];
}
return this;
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.once = function (type, listener) {
var self = this;
self.on(type, function g() {
self.removeListener(type, g);
listener.apply(this, arguments);
});
return this;
};
EventEmitter.prototype.removeListener = function (type, listener) {
if ('function' !== typeof listener) {
throw new Error('removeListener only takes instances of Function');
}
if (!this._events || !this._events[type])
return this;
var list = this._events[type];
if (isArray(list)) {
var i = list.indexOf(listener);
if (i < 0)
return this;
list.splice(i, 1);
if (list.length == 0)
delete this._events[type];
} else if (this._events[type] === listener) {
delete this._events[type];
}
return this;
};
EventEmitter.prototype.removeAllListeners = function (type) {
if (type && this._events && this._events[type])
this._events[type] = null;
return this;
};
EventEmitter.prototype.listeners = function (type) {
if (!this._events)
this._events = {};
if (!this._events[type])
this._events[type] = [];
if (!isArray(this._events[type])) {
this._events[type] = [this._events[type]];
}
return this._events[type];
};
});
global.GIF = require('/gif.coffee');
}.call(this, this));
//# sourceMappingURL=gif.js.map
// gif.js 0.1.6 - https://github.com/jnordberg/gif.js
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