in src/core/lib/gif.js [2:139]
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 cwd() {
return a;
}, chdir: function chdir(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');