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8bitworkshop/lib/gif.js.map
Steven Hugg 74ab935e1b forgot gif.js in dist
2020-12-08 10:32:46 -06:00

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e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\nfunction EventEmitter() {\n this._events = this._events || {};\n this._maxListeners = this._maxListeners || undefined;\n}\nmodule.exports = EventEmitter;\n\n// Backwards-compat with node 0.10.x\nEventEmitter.EventEmitter = EventEmitter;\n\nEventEmitter.prototype._events = undefined;\nEventEmitter.prototype._maxListeners = undefined;\n\n// By default EventEmitters will print a warning if more than 10 listeners are\n// added to it. This is a useful default which helps finding memory leaks.\nEventEmitter.defaultMaxListeners = 10;\n\n// Obviously not all Emitters should be limited to 10. This function allows\n// that to be increased. Set to zero for unlimited.\nEventEmitter.prototype.setMaxListeners = function(n) {\n if (!isNumber(n) || n < 0 || isNaN(n))\n throw TypeError('n must be a positive number');\n this._maxListeners = n;\n return this;\n};\n\nEventEmitter.prototype.emit = function(type) {\n var er, handler, len, args, i, listeners;\n\n if (!this._events)\n this._events = {};\n\n // If there is no 'error' event listener then throw.\n if (type === 'error') {\n if (!this._events.error ||\n (isObject(this._events.error) && !this._events.error.length)) {\n er = arguments[1];\n if (er instanceof Error) {\n throw er; // Unhandled 'error' event\n } else {\n // At least give some kind of context to the user\n var err = new Error('Uncaught, unspecified \"error\" event. (' + er + ')');\n err.context = er;\n throw err;\n }\n }\n }\n\n handler = this._events[type];\n\n if (isUndefined(handler))\n return false;\n\n if (isFunction(handler)) {\n switch (arguments.length) {\n // fast cases\n case 1:\n handler.call(this);\n break;\n case 2:\n handler.call(this, arguments[1]);\n break;\n case 3:\n handler.call(this, arguments[1], arguments[2]);\n break;\n // slower\n default:\n args = Array.prototype.slice.call(arguments, 1);\n handler.apply(this, args);\n }\n } else if (isObject(handler)) {\n args = Array.prototype.slice.call(arguments, 1);\n listeners = handler.slice();\n len = listeners.length;\n for (i = 0; i < len; i++)\n listeners[i].apply(this, args);\n }\n\n return true;\n};\n\nEventEmitter.prototype.addListener = function(type, listener) {\n var m;\n\n if (!isFunction(listener))\n throw TypeError('listener must be a function');\n\n if (!this._events)\n this._events = {};\n\n // To avoid recursion in the case that type === \"newListener\"! Before\n // adding it to the listeners, first emit \"newListener\".\n if (this._events.newListener)\n this.emit('newListener', type,\n isFunction(listener.listener) ?\n listener.listener : listener);\n\n if (!this._events[type])\n // Optimize the case of one listener. Don't need the extra array object.\n this._events[type] = listener;\n else if (isObject(this._events[type]))\n // If we've already got an array, just append.\n this._events[type].push(listener);\n else\n // Adding the second element, need to change to array.\n this._events[type] = [this._events[type], listener];\n\n // Check for listener leak\n if (isObject(this._events[type]) && !this._events[type].warned) {\n if (!isUndefined(this._maxListeners)) {\n m = this._maxListeners;\n } else {\n m = EventEmitter.defaultMaxListeners;\n }\n\n if (m && m > 0 && this._events[type].length > m) {\n this._events[type].warned = true;\n console.error('(node) warning: possible EventEmitter memory ' +\n 'leak detected. %d listeners added. ' +\n 'Use emitter.setMaxListeners() to increase limit.',\n this._events[type].length);\n if (typeof console.trace === 'function') {\n // not supported in IE 10\n console.trace();\n }\n }\n }\n\n return this;\n};\n\nEventEmitter.prototype.on = EventEmitter.prototype.addListener;\n\nEventEmitter.prototype.once = function(type, listener) {\n if (!isFunction(listener))\n throw TypeError('listener must be a function');\n\n var fired = false;\n\n function g() {\n this.removeListener(type, g);\n\n if (!fired) {\n fired = true;\n listener.apply(this, arguments);\n }\n }\n\n g.listener = listener;\n this.on(type, g);\n\n return this;\n};\n\n// emits a 'removeListener' event iff the listener was removed\nEventEmitter.prototype.removeListener = function(type, listener) {\n var list, position, length, i;\n\n if (!isFunction(listener))\n throw TypeError('listener must be a function');\n\n if (!this._events || !this._events[type])\n return this;\n\n list = this._events[type];\n length = list.length;\n position = -1;\n\n if (list === listener ||\n (isFunction(list.listener) && list.listener === listener)) {\n delete this._events[type];\n if (this._events.removeListener)\n this.emit('removeListener', type, listener);\n\n } else if (isObject(list)) {\n for (i = length; i-- > 0;) {\n if (list[i] === listener ||\n (list[i].listener && list[i].listener === listener)) {\n position = i;\n break;\n }\n }\n\n if (position < 0)\n return this;\n\n if (list.length === 1) {\n list.length = 0;\n delete this._events[type];\n } else {\n list.splice(position, 1);\n }\n\n if (this._events.removeListener)\n this.emit('removeListener', type, listener);\n }\n\n return this;\n};\n\nEventEmitter.prototype.removeAllListeners = function(type) {\n var key, listeners;\n\n if (!this._events)\n return this;\n\n // not listening for removeListener, no need to emit\n if (!this._events.removeListener) {\n if (arguments.length === 0)\n this._events = {};\n else if (this._events[type])\n delete this._events[type];\n return this;\n }\n\n // emit removeListener for all listeners on all events\n if (arguments.length === 0) {\n for (key in this._events) {\n if (key === 'removeListener') continue;\n this.removeAllListeners(key);\n }\n this.removeAllListeners('removeListener');\n this._events = {};\n return this;\n }\n\n listeners = this._events[type];\n\n if (isFunction(listeners)) {\n this.removeListener(type, listeners);\n } else if (listeners) {\n // LIFO order\n while (listeners.length)\n this.removeListener(type, listeners[listeners.length - 1]);\n }\n delete this._events[type];\n\n return this;\n};\n\nEventEmitter.prototype.listeners = function(type) {\n var ret;\n if (!this._events || !this._events[type])\n ret = [];\n else if (isFunction(this._events[type]))\n ret = [this._events[type]];\n else\n ret = this._events[type].slice();\n return ret;\n};\n\nEventEmitter.prototype.listenerCount = function(type) {\n if (this._events) {\n var evlistener = this._events[type];\n\n if (isFunction(evlistener))\n return 1;\n else if (evlistener)\n return evlistener.length;\n }\n return 0;\n};\n\nEventEmitter.listenerCount = function(emitter, type) {\n return emitter.listenerCount(type);\n};\n\nfunction isFunction(arg) {\n return typeof arg === 'function';\n}\n\nfunction isNumber(arg) {\n return typeof arg === 'number';\n}\n\nfunction isObject(arg) {\n return typeof arg === 'object' && arg !== null;\n}\n\nfunction isUndefined(arg) {\n return arg === void 0;\n}\n","### CoffeeScript version of the browser detection from MooTools ###\n\nua = navigator.userAgent.toLowerCase()\nplatform = navigator.platform.toLowerCase()\nUA = ua.match(/(opera|ie|firefox|chrome|version)[\\s\\/:]([\\w\\d\\.]+)?.*?(safari|version[\\s\\/:]([\\w\\d\\.]+)|$)/) or [null, 'unknown', 0]\nmode = UA[1] == 'ie' && document.documentMode\n\nbrowser =\n name: if UA[1] is 'version' then UA[3] else UA[1]\n version: mode or parseFloat(if UA[1] is 'opera' && UA[4] then UA[4] else UA[2])\n\n platform:\n name: if ua.match(/ip(?:ad|od|hone)/) then 'ios' else (ua.match(/(?:webos|android)/) or platform.match(/mac|win|linux/) or ['other'])[0]\n\nbrowser[browser.name] = true\nbrowser[browser.name + parseInt(browser.version, 10)] = true\nbrowser.platform[browser.platform.name] = true\n\nmodule.exports = browser\n","{EventEmitter} = require 'events'\nbrowser = require './browser.coffee'\n\nclass GIF extends EventEmitter\n\n defaults =\n workerScript: 'gif.worker.js'\n workers: 2\n repeat: 0 # repeat forever, -1 = repeat once\n background: '#fff'\n quality: 10 # pixel sample interval, lower is better\n width: null # size derermined from first frame if possible\n height: null\n transparent: null\n debug: false\n dither: false # see GIFEncoder.js for dithering options\n rotate: 0\n\n frameDefaults =\n delay: 500 # ms\n copy: false\n\n constructor: (options) ->\n @running = false\n\n @options = {}\n @frames = []\n\n @freeWorkers = []\n @activeWorkers = []\n\n @setOptions options\n for key, value of defaults\n @options[key] ?= value\n\n setOption: (key, value) ->\n @options[key] = value\n if @_canvas? and key in ['width', 'height']\n @_canvas[key] = value\n\n setOptions: (options) ->\n @setOption key, value for own key, value of options\n\n addFrame: (image, options={}) ->\n frame = {}\n frame.transparent = @options.transparent\n for key of frameDefaults\n frame[key] = options[key] or frameDefaults[key]\n\n # use the images width and height for options unless already set\n @setOption 'width', image.width unless @options.width?\n @setOption 'height', image.height unless @options.height?\n\n if ImageData? and image instanceof ImageData\n frame.data = image.data\n else if (CanvasRenderingContext2D? and image instanceof CanvasRenderingContext2D) or (WebGLRenderingContext? and image instanceof WebGLRenderingContext)\n if options.copy\n frame.data = @getContextData image\n else\n frame.context = image\n else if image.childNodes?\n if options.copy\n frame.data = @getImageData image\n else\n frame.image = image\n else\n throw new Error 'Invalid image'\n\n @frames.push frame\n\n render: ->\n throw new Error 'Already running' if @running\n\n if not @options.width? or not @options.height?\n throw new Error 'Width and height must be set prior to rendering'\n\n @running = true\n @nextFrame = 0\n @finishedFrames = 0\n\n @imageParts = (null for i in [0...@frames.length])\n numWorkers = @spawnWorkers()\n # we need to wait for the palette\n if @options.globalPalette == true\n @renderNextFrame()\n else\n @renderNextFrame() for i in [0...numWorkers]\n\n @emit 'start'\n @emit 'progress', 0\n\n abort: ->\n loop\n worker = @activeWorkers.shift()\n break unless worker?\n @log 'killing active worker'\n worker.terminate()\n @running = false\n @emit 'abort'\n\n # private\n\n spawnWorkers: ->\n numWorkers = Math.min(@options.workers, @frames.length)\n [@freeWorkers.length...numWorkers].forEach (i) =>\n @log \"spawning worker #{ i }\"\n worker = new Worker @options.workerScript\n worker.onmessage = (event) =>\n @activeWorkers.splice @activeWorkers.indexOf(worker), 1\n @freeWorkers.push worker\n @frameFinished event.data\n @freeWorkers.push worker\n return numWorkers\n\n frameFinished: (frame) ->\n @log \"frame #{ frame.index } finished - #{ @activeWorkers.length } active\"\n @finishedFrames++\n @emit 'progress', @finishedFrames / @frames.length\n @imageParts[frame.index] = frame\n # remember calculated palette, spawn the rest of the workers\n if @options.globalPalette == true\n @options.globalPalette = frame.globalPalette\n @log 'global palette analyzed'\n @renderNextFrame() for i in [1...@freeWorkers.length] if @frames.length > 2\n if null in @imageParts\n @renderNextFrame()\n else\n @finishRendering()\n\n finishRendering: ->\n len = 0\n for frame in @imageParts\n len += (frame.data.length - 1) * frame.pageSize + frame.cursor\n len += frame.pageSize - frame.cursor\n @log \"rendering finished - filesize #{ Math.round(len / 1000) }kb\"\n data = new Uint8Array len\n offset = 0\n for frame in @imageParts\n for page, i in frame.data\n data.set page, offset\n if i is frame.data.length - 1\n offset += frame.cursor\n else\n offset += frame.pageSize\n\n image = new Blob [data],\n type: 'image/gif'\n\n @emit 'finished', image, data\n\n renderNextFrame: ->\n throw new Error 'No free workers' if @freeWorkers.length is 0\n return if @nextFrame >= @frames.length # no new frame to render\n\n frame = @frames[@nextFrame++]\n worker = @freeWorkers.shift()\n task = @getTask frame\n\n @log \"starting frame #{ task.index + 1 } of #{ @frames.length }\"\n @activeWorkers.push worker\n worker.postMessage task#, [task.data.buffer]\n\n getContextData: (ctx) ->\n return ctx.getImageData(0, 0, @options.width, @options.height).data\n\n getImageData: (image) ->\n if not @_canvas?\n @_canvas = document.createElement 'canvas'\n @_canvas.width = @options.width\n @_canvas.height = @options.height\n\n ctx = @_canvas.getContext '2d'\n ctx.setFill = @options.background\n ctx.fillRect 0, 0, @options.width, @options.height\n ctx.drawImage image, 0, 0\n\n return @getContextData ctx\n\n getTask: (frame) ->\n index = @frames.indexOf frame\n task =\n index: index\n last: index is (@frames.length - 1)\n delay: frame.delay\n transparent: frame.transparent\n width: @options.width\n height: @options.height\n quality: @options.quality\n dither: @options.dither\n globalPalette: @options.globalPalette\n repeat: @options.repeat\n rotate: @options.rotate\n canTransfer: (browser.name is 'chrome')\n\n if frame.data?\n task.data = frame.data\n else if frame.context?\n task.data = @getContextData frame.context\n else if frame.image?\n task.data = @getImageData frame.image\n else\n throw new Error 'Invalid frame'\n\n return task\n\n log: (args...) ->\n return unless @options.debug\n console.log args...\n\n\nmodule.exports = GIF\n"]}
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