diff options
| author | Julie Lala <jules@okfoc.us> | 2013-12-18 21:32:42 -0500 |
|---|---|---|
| committer | Julie Lala <jules@okfoc.us> | 2013-12-18 21:32:42 -0500 |
| commit | 5ef224e2a9b37d4b5b283d5bf5ebd4f5d0ec226b (patch) | |
| tree | bf47e4b5447dc01c31dd718de0de8a75bc060ad4 | |
initial commit...
| -rw-r--r-- | .bowerrc | 3 | ||||
| -rw-r--r-- | .gitignore | 7 | ||||
| -rw-r--r-- | Gruntfile.js | 52 | ||||
| -rw-r--r-- | bower.json | 13 | ||||
| -rwxr-xr-x | js/gif-encode/GIFEncoder.js | 513 | ||||
| -rw-r--r-- | js/gif-encode/LZWEncoder.js | 328 | ||||
| -rw-r--r-- | js/gif-encode/NeuQuant.js | 538 | ||||
| -rw-r--r-- | js/gif-encode/client.js | 279 | ||||
| -rw-r--r-- | js/gif-encode/tube.js | 323 | ||||
| -rw-r--r-- | js/gif-encode/util.js | 15 | ||||
| -rw-r--r-- | js/gif-encode/worker.js | 88 | ||||
| -rw-r--r-- | js/record.js | 162 | ||||
| -rw-r--r-- | js/vendor/FileSaver/.bower.json | 15 | ||||
| -rw-r--r-- | js/vendor/FileSaver/FileSaver.js | 232 | ||||
| -rw-r--r-- | js/vendor/FileSaver/LICENSE.md | 30 | ||||
| -rw-r--r-- | js/vendor/FileSaver/README.md | 78 | ||||
| -rw-r--r-- | js/vendor/FileSaver/bower.json | 7 | ||||
| -rw-r--r-- | js/vendor/FileSaver/demo/demo.css | 55 | ||||
| -rw-r--r-- | js/vendor/FileSaver/demo/demo.js | 213 | ||||
| -rw-r--r-- | js/vendor/FileSaver/demo/demo.min.js | 2 | ||||
| -rw-r--r-- | js/vendor/FileSaver/demo/index.xhtml | 57 | ||||
| -rw-r--r-- | js/vendor/FileSaver/package.json | 23 | ||||
| -rw-r--r-- | js/vendor/dataUriToBlob.js | 47 | ||||
| -rw-r--r-- | noisia.html | 350 | ||||
| -rw-r--r-- | package.json | 10 |
25 files changed, 3440 insertions, 0 deletions
diff --git a/.bowerrc b/.bowerrc new file mode 100644 index 0000000..1f5fb9e --- /dev/null +++ b/.bowerrc @@ -0,0 +1,3 @@ +{ + "directory": "js/vendor/" +} diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..1787d3b --- /dev/null +++ b/.gitignore @@ -0,0 +1,7 @@ +*~ +v1 +.DS_Store +*.orig +.sass-cache/ +.#* +*.swp diff --git a/Gruntfile.js b/Gruntfile.js new file mode 100644 index 0000000..bb6dfbd --- /dev/null +++ b/Gruntfile.js @@ -0,0 +1,52 @@ +module.exports = function(grunt) { + + // Project configuration. + grunt.initConfig({ + pkg: grunt.file.readJSON('package.json'), + concat: { + options: { + separator: ';' + }, + dist: { + src: [ + 'js/vendor/FileSaver/FileSaver.js', + 'js/vendor/dataUriToBlob.js', + 'js/gif-encode/client.js', + 'js/record.js' + ], + dest: 'js/record.concat.js', + }, + worker: { + src: [ + 'js/gif-encode/GIFEncoder.js', + 'js/gif-encode/LZWEncoder.js', + 'js/gif-encode/NeuQuant.js', + 'js/gif-encode/worker.js' + ], + dest: 'js/gif-encode/worker.concat.js' + } + }, + uglify: { + options: { + banner: '/* asdf.us/dither */\n' + }, + build: { + src: 'js/record.concat.js', + dest: 'js/record.min.js' + } + }, + watch: { + files: ['js/!(live.min|live.concat).js','js/vendor/*'], + tasks: ['default'] + } + }); + + // Load tasks that we'll be using + grunt.loadNpmTasks('grunt-contrib-concat'); + grunt.loadNpmTasks('grunt-contrib-uglify'); + grunt.loadNpmTasks('grunt-contrib-watch'); + + + // Default task(s). + grunt.registerTask('default', ['concat', 'uglify']); +}; diff --git a/bower.json b/bower.json new file mode 100644 index 0000000..f7e1850 --- /dev/null +++ b/bower.json @@ -0,0 +1,13 @@ +{ + "name": "gif-record", + "version": "1.0.0", + "homepage": "http://asdf.us/dither/", + "authors": [ + "julie lala" + ], + "description": "record a gif from a canvas tag", + "private": true, + "dependencies": { + "FileSaver": "*" + } +} diff --git a/js/gif-encode/GIFEncoder.js b/js/gif-encode/GIFEncoder.js new file mode 100755 index 0000000..01d3618 --- /dev/null +++ b/js/gif-encode/GIFEncoder.js @@ -0,0 +1,513 @@ +/**
+* This class lets you encode animated GIF files
+* Base class : http://www.java2s.com/Code/Java/2D-Graphics-GUI/AnimatedGifEncoder.htm
+* @author Kevin Weiner (original Java version - kweiner@fmsware.com)
+* @author Thibault Imbert (AS3 version - bytearray.org)
+* @version 0.1 AS3 implementation
+*/
+
+//import flash.utils.ByteArray;
+//import flash.display.BitmapData;
+//import flash.display.Bitmap;
+//import org.bytearray.gif.encoder.NeuQuant
+//import flash.net.URLRequestHeader;
+//import flash.net.URLRequestMethod;
+//import flash.net.URLRequest;
+//import flash.net.navigateToURL;
+
+GIFEncoder = function() {
+ for(var i = 0, chr = {}; i < 256; i++) {
+ chr[i] = String.fromCharCode(i);
+ }
+
+ function ByteArray(){
+ this.bin = [];
+ }
+
+ ByteArray.prototype.getData = function(){
+ for(var v = '', l = this.bin.length, i = 0; i < l; i++) {
+ v += chr[this.bin[i]];
+ }
+ return v;
+ }
+ ByteArray.prototype.writeByte = function(val){
+ this.bin.push(val);
+ }
+ ByteArray.prototype.writeUTFBytes = function(string) {
+ for(var l = string.length, i = 0; i < l; i++) {
+ this.writeByte(string.charCodeAt(i));
+ }
+ }
+ ByteArray.prototype.writeBytes = function(array, offset, length) {
+ for(var l = length || array.length, i = offset||0; i < l; i++) {
+ this.writeByte(array[i]);
+ }
+ }
+
+ var exports = {};
+ var width/*int*/ // image size
+ var height/*int*/;
+ var transparent/***/ = null; // transparent color if given
+ var transIndex/*int*/; // transparent index in color table
+ var repeat/*int*/ = -1; // no repeat
+ var delay/*int*/ = 0; // frame delay (hundredths)
+ var started/*Boolean*/ = false; // ready to output frames
+ var out/*ByteArray*/;
+ var image/*Bitmap*/; // current frame
+ var pixels/*ByteArray*/; // BGR byte array from frame
+ var indexedPixels/*ByteArray*/ // converted frame indexed to palette
+ var colorDepth/*int*/; // number of bit planes
+ var colorTab/*ByteArray*/; // RGB palette
+ var usedEntry/*Array*/ = new Array; // active palette entries
+ var palSize/*int*/ = 7; // color table size (bits-1)
+ var dispose/*int*/ = -1; // disposal code (-1 = use default)
+ var closeStream/*Boolean*/ = false; // close stream when finished
+ var firstFrame/*Boolean*/ = true;
+ var sizeSet/*Boolean*/ = false; // if false, get size from first frame
+ var sample/*int*/ = 1; // default sample interval for quantizer
+ var neuquantBrain = null; // allow loading in a prefab neural net
+
+ /**
+ * Sets the delay time between each frame, or changes it for subsequent frames
+ * (applies to last frame added)
+ * int delay time in milliseconds
+ * @param ms
+ */
+
+ var setDelay = exports.setDelay = function setDelay(ms/*int*/) {
+ delay = Math.round(ms / 10);
+ }
+
+ /**
+ * Sets the GIF frame disposal code for the last added frame and any
+ *
+ * subsequent frames. Default is 0 if no transparent color has been set,
+ * otherwise 2.
+ * @param code
+ * int disposal code.
+ */
+
+ var setDispose = exports.setDispose = function setDispose(code/*int*/) {
+ if (code >= 0) dispose = code;
+ }
+
+ /**
+ * Sets the number of times the set of GIF frames should be played. Default is
+ * 1; 0 means play indefinitely. Must be invoked before the first image is
+ * added.
+ *
+ * @param iter
+ * int number of iterations.
+ * @return
+ */
+
+ var setRepeat = exports.setRepeat = function setRepeat(iter/*int*/) {
+ if (iter >= 0) repeat = iter;
+ }
+
+ /**
+ * Sets the transparent color for the last added frame and any subsequent
+ * frames. Since all colors are subject to modification in the quantization
+ * process, the color in the final palette for each frame closest to the given
+ * color becomes the transparent color for that frame. May be set to null to
+ * indicate no transparent color.
+ * @param
+ * Color to be treated as transparent on display.
+ */
+
+ var setTransparent = exports.setTransparent = function setTransparent(c/*Number*/) {
+ transparent = c;
+ }
+
+ /**
+ * The addFrame method takes an incoming BitmapData object to create each frames
+ * @param
+ * BitmapData object to be treated as a GIF's frame
+ */
+
+ /*Boolean*/
+ var addFrame = exports.addFrame = function addFrame(im/*BitmapData*/, is_imageData) {
+ if ((im == null) || ! started || out == null) {
+ throw new Error ("Please call start method before calling addFrame");
+ return false;
+ }
+
+ var ok/*Boolean*/ = true;
+
+ try {
+ if ( ! is_imageData) {
+ image = im.getImageData(0,0, im.canvas.width, im.canvas.height).data;
+ if ( ! sizeSet) {
+ setSize(im.canvas.width, im.canvas.height);
+ }
+ }
+ else {
+ image = im;
+ }
+ getImagePixels(); // convert to correct format if necessary
+ analyzePixels(); // build color table & map pixels
+
+ if (firstFrame) {
+ writeLSD(); // logical screen descriptior
+ writePalette(); // global color table
+ if (repeat >= 0) {
+ // use NS app extension to indicate reps
+ writeNetscapeExt();
+ }
+ }
+
+ writeGraphicCtrlExt(); // write graphic control extension
+ writeImageDesc(); // image descriptor
+ if (!firstFrame) {
+ writePalette(); // local color table
+ }
+ writePixels(); // encode and write pixel data
+ firstFrame = false;
+ }
+ catch (e/*Error*/) {
+ ok = false;
+ }
+ return ok;
+ }
+
+ /**
+ * Adds final trailer to the GIF stream, if you don't call the finish method
+ * the GIF stream will not be valid.
+ */
+
+ /*Boolean*/
+ var finish = exports.finish = function finish() {
+ if ( ! started) {
+ return false;
+ }
+
+ var ok/*Boolean*/ = true;
+ started = false;
+ try {
+ out.writeByte(0x3b); // gif trailer
+ }
+ catch (e/*Error*/) {
+ ok = false;
+ }
+ return ok;
+ }
+
+ /**
+ * Resets some members so that a new stream can be started.
+ * This method is actually called by the start method
+ */
+
+ var reset = function reset () {
+ // reset for subsequent use
+ transIndex = 0;
+ image = null;
+ pixels = null;
+ indexedPixels = null;
+ colorTab = null;
+ closeStream = false;
+ firstFrame = true;
+ }
+
+ /**
+ * * Sets frame rate in frames per second. Equivalent to
+ * <code>setDelay(1000/fps)</code>.
+ * @param fps
+ * float frame rate (frames per second)
+ */
+
+ var setFrameRate = exports.setFrameRate = function setFrameRate(fps/*Number*/) {
+ if (fps != 0xf) {
+ delay = Math.round(100/fps);
+ }
+ }
+
+ /**
+ * Sets quality of color quantization (conversion of images to the maximum 256
+ * colors allowed by the GIF specification). Lower values (minimum = 1)
+ * produce better colors, but slow processing significantly. 10 is the
+ * default, and produces good color mapping at reasonable speeds. Values
+ * greater than 20 do not yield significant improvements in speed.
+ * @param quality
+ * int greater than 0.
+ * @return
+ */
+
+ var setQuality = exports.setQuality = function setQuality(quality/*int*/) {
+ sample = Math.max(1, quality);
+ }
+
+ /**
+ * Sets the GIF frame size. The default size is the size of the first frame
+ * added if this method is not invoked.
+ * @param w
+ * int frame width.
+ * @param h
+ * int frame width.
+ */
+
+ var setSize = exports.setSize = function setSize(w/*int*/, h/*int*/) {
+ if (started && !firstFrame) {
+ return;
+ }
+ width = w;
+ height = h;
+ if (width < 1) width = 320;
+ if (height < 1) height = 240;
+ sizeSet = true;
+ }
+
+ /**
+ * After running the Neuquant on some test frames, it can be exported and then loaded
+ * into an uninitialized NQ instance on another worker and used accordingly.
+ */
+ var setNeuquant = exports.setNeuquant = function setNeuquant(neuquant, colors){
+ neuquantBrain = neuquant;
+ colorTab = colors;
+ }
+
+ /**
+ * Initiates GIF file creation on the given stream.
+ * @param os
+ * OutputStream on which GIF images are written.
+ * @return false if initial write failed.
+ */
+
+ var start = exports.start = function start() {
+ reset();
+ var ok/*Boolean*/ = true;
+ closeStream = false;
+ out = new ByteArray;
+ try {
+ out.writeUTFBytes("GIF89a"); // header
+ } catch (e/*Error*/) {
+ ok = false;
+ }
+
+ return started = ok;
+ }
+
+ var cont = exports.cont = function cont() {
+ reset();
+ var ok = true;
+ closeStream = false;
+ out = new ByteArray ();
+ return started = ok;
+ }
+
+ /**
+ * Analyzes image colors and creates color map.
+ */
+
+ var analyzePixels = function analyzePixels() {
+ var len = pixels.length;
+ var nPix = len / 3;
+ indexedPixels = [];
+ // initialize quantizer
+
+ var nq;
+ if (neuquantBrain && colorTab) {
+ nq = new NeuQuant();
+ nq.load(neuquantBrain);
+ }
+ else {
+ nq = new NeuQuant (pixels, len, sample);
+ colorTab = nq.process(); // create reduced palette
+ }
+
+ // map image pixels to new palette
+ var k = 0;
+ for (var j = 0; j < nPix; j++) {
+ var index = nq.map(pixels[k++] & 0xff, pixels[k++] & 0xff, pixels[k++] & 0xff);
+ usedEntry[index] = true;
+ indexedPixels[j] = index;
+ }
+ pixels = null;
+ colorDepth = 8;
+ palSize = 7;
+
+ // get closest match to transparent color if specified
+ if (transparent != null) {
+ transIndex = findClosest(transparent);
+ }
+ }
+
+ /**
+ * Returns index of palette color closest to c
+ */
+
+ var findClosest = function findClosest(c/*Number*/) {
+ if (colorTab == null) return -1;
+ var r = (c & 0xFF0000) >> 16;
+ var g = (c & 0x00FF00) >> 8;
+ var b = (c & 0x0000FF);
+ var minpos = 0;
+ var dmin = 256 * 256 * 256;
+ var len = colorTab.length;
+
+ for (var i = 0; i < len;) {
+ var dr = r - (colorTab[i++] & 0xff);
+ var dg = g - (colorTab[i++] & 0xff);
+ var db = b - (colorTab[i] & 0xff);
+ var d = dr * dr + dg * dg + db * db;
+ var index = i / 3;
+ if (usedEntry[index] && (d < dmin)) {
+ dmin = d;
+ minpos = index;
+ }
+ i++;
+ }
+ return minpos;
+ }
+
+ /**
+ * Extracts image pixels into byte array "pixels
+ */
+
+ var getImagePixels = function getImagePixels() {
+ var w = width;
+ var h = height;
+ pixels = [];
+ var data = image;
+ var count/*int*/ = 0;
+
+ for ( var i/*int*/ = 0; i < h; i++ ) {
+ for (var j/*int*/ = 0; j < w; j++ ) {
+ var b = (i*w*4)+j*4;
+ pixels[count++] = data[b];
+ pixels[count++] = data[b+1];
+ pixels[count++] = data[b+2];
+ }
+ }
+ }
+
+ /**
+ * Writes Graphic Control Extension
+ */
+
+ var writeGraphicCtrlExt = function writeGraphicCtrlExt() {
+ out.writeByte(0x21); // extension introducer
+ out.writeByte(0xf9); // GCE label
+ out.writeByte(4); // data block size
+ var transp/*int*/
+ var disp/*int*/;
+ if (transparent == null) {
+ transp = 0;
+ disp = 0; // dispose = no action
+ }
+ else {
+ transp = 1;
+ disp = 2; // force clear if using transparent color
+ }
+ if (dispose >= 0) {
+ disp = dispose & 7; // user override
+ }
+ disp <<= 2;
+ // packed fields
+ out.writeByte(0 | // 1:3 reserved
+ disp | // 4:6 disposal
+ 0 | // 7 user input - 0 = none
+ transp); // 8 transparency flag
+
+ WriteShort(delay); // delay x 1/100 sec
+ out.writeByte(transIndex); // transparent color index
+ out.writeByte(0); // block terminator
+ }
+
+ /**
+ * Writes Image Descriptor
+ */
+
+ var writeImageDesc = function writeImageDesc() {
+ out.writeByte(0x2c); // image separator
+ WriteShort(0); // image position x,y = 0,0
+ WriteShort(0);
+ WriteShort(width); // image size
+ WriteShort(height);
+
+ // packed fields
+ if (firstFrame) {
+ // no LCT - GCT is used for first (or only) frame
+ out.writeByte(0);
+ }
+ else {
+ // specify normal LCT
+ out.writeByte(0x80 | // 1 local color table 1=yes
+ 0 | // 2 interlace - 0=no
+ 0 | // 3 sorted - 0=no
+ 0 | // 4-5 reserved
+ palSize); // 6-8 size of color table
+ }
+ }
+
+ /**
+ * Writes Logical Screen Descriptor
+ */
+
+ var writeLSD = function writeLSD() {
+ // logical screen size
+ WriteShort(width);
+ WriteShort(height);
+ // packed fields
+ out.writeByte((0x80 | // 1 : global color table flag = 1 (gct used)
+ 0x70 | // 2-4 : color resolution = 7
+ 0x00 | // 5 : gct sort flag = 0
+ palSize)); // 6-8 : gct size
+
+ out.writeByte(0); // background color index
+ out.writeByte(0); // pixel aspect ratio - assume 1:1
+ }
+
+ /**
+ * Writes Netscape application extension to define repeat count.
+ */
+
+ var writeNetscapeExt = function writeNetscapeExt() {
+ out.writeByte(0x21); // extension introducer
+ out.writeByte(0xff); // app extension label
+ out.writeByte(11); // block size
+ out.writeUTFBytes("NETSCAPE" + "2.0"); // app id + auth code
+ out.writeByte(3); // sub-block size
+ out.writeByte(1); // loop sub-block id
+ WriteShort(repeat); // loop count (extra iterations, 0=repeat forever)
+ out.writeByte(0); // block terminator
+ }
+
+ /**
+ * Writes color table
+ */
+ var writePalette = function writePalette() {
+ out.writeBytes(colorTab);
+ var n/*int*/ = (3 * 256) - colorTab.length;
+ for (var i/*int*/ = 0; i < n; i++) {
+ out.writeByte(0);
+ }
+ }
+
+ var WriteShort = function WriteShort (pValue/*int*/) {
+ out.writeByte( pValue & 0xFF );
+ out.writeByte( (pValue >> 8) & 0xFF);
+ }
+
+ /**
+ * Encodes and writes pixel data
+ */
+ var writePixels = function writePixels() {
+ var myencoder = new LZWEncoder(width, height, indexedPixels, colorDepth);
+ myencoder.encode(out);
+ }
+
+ /**
+ * retrieves the GIF stream
+ */
+ var stream = exports.stream = function stream () {
+ return out;
+ }
+
+ var setProperties = exports.setProperties = function setProperties(has_start, is_first) {
+ started = has_start;
+ firstFrame = is_first;
+ }
+
+ return exports;
+}
+
diff --git a/js/gif-encode/LZWEncoder.js b/js/gif-encode/LZWEncoder.js new file mode 100644 index 0000000..e3c512a --- /dev/null +++ b/js/gif-encode/LZWEncoder.js @@ -0,0 +1,328 @@ +/**
+* This class handles LZW encoding
+* Adapted from Jef Poskanzer's Java port by way of J. M. G. Elliott.
+* @author Kevin Weiner (original Java version - kweiner@fmsware.com)
+* @author Thibault Imbert (AS3 version - bytearray.org)
+* @version 0.1 AS3 implementation
+*/
+
+//import flash.utils.ByteArray;
+
+LZWEncoder = function()
+{
+ var exports = {};
+ /*private_static*/ var EOF/*int*/ = -1;
+ /*private*/ var imgW/*int*/;
+ /*private*/ var imgH/*int*/
+ /*private*/ var pixAry/*ByteArray*/;
+ /*private*/ var initCodeSize/*int*/;
+ /*private*/ var remaining/*int*/;
+ /*private*/ var curPixel/*int*/;
+
+ // GIFCOMPR.C - GIF Image compression routines
+ // Lempel-Ziv compression based on 'compress'. GIF modifications by
+ // David Rowley (mgardi@watdcsu.waterloo.edu)
+ // General DEFINEs
+
+ /*private_static*/ var BITS/*int*/ = 12;
+ /*private_static*/ var HSIZE/*int*/ = 5003; // 80% occupancy
+
+ // GIF Image compression - modified 'compress'
+ // Based on: compress.c - File compression ala IEEE Computer, June 1984.
+ // By Authors: Spencer W. Thomas (decvax!harpo!utah-cs!utah-gr!thomas)
+ // Jim McKie (decvax!mcvax!jim)
+ // Steve Davies (decvax!vax135!petsd!peora!srd)
+ // Ken Turkowski (decvax!decwrl!turtlevax!ken)
+ // James A. Woods (decvax!ihnp4!ames!jaw)
+ // Joe Orost (decvax!vax135!petsd!joe)
+
+ /*private*/ var n_bits/*int*/ // number of bits/code
+ /*private*/ var maxbits/*int*/ = BITS; // user settable max # bits/code
+ /*private*/ var maxcode/*int*/ // maximum code, given n_bits
+ /*private*/ var maxmaxcode/*int*/ = 1 << BITS; // should NEVER generate this code
+ /*private*/ var htab/*Array*/ = new Array;
+ /*private*/ var codetab/*Array*/ = new Array;
+ /*private*/ var hsize/*int*/ = HSIZE; // for dynamic table sizing
+ /*private*/ var free_ent/*int*/ = 0; // first unused entry
+
+ // block compression parameters -- after all codes are used up,
+ // and compression rate changes, start over.
+
+ /*private*/ var clear_flg/*Boolean*/ = false;
+
+ // Algorithm: use open addressing double hashing (no chaining) on the
+ // prefix code / next character combination. We do a variant of Knuth's
+ // algorithm D (vol. 3, sec. 6.4) along with G. Knott's relatively-prime
+ // secondary probe. Here, the modular division first probe is gives way
+ // to a faster exclusive-or manipulation. Also do block compression with
+ // an adaptive reset, whereby the code table is cleared when the compression
+ // ratio decreases, but after the table fills. The variable-length output
+ // codes are re-sized at this point, and a special CLEAR code is generated
+ // for the decompressor. Late addition: construct the table according to
+ // file size for noticeable speed improvement on small files. Please direct
+ // questions about this implementation to ames!jaw.
+
+ /*private*/ var g_init_bits/*int*/;
+ /*private*/ var ClearCode/*int*/;
+ /*private*/ var EOFCode/*int*/;
+
+ // output
+ // Output the given code.
+ // Inputs:
+ // code: A n_bits-bit integer. If == -1, then EOF. This assumes
+ // that n_bits =< wordsize - 1.
+ // Outputs:
+ // Outputs code to the file.
+ // Assumptions:
+ // Chars are 8 bits long.
+ // Algorithm:
+ // Maintain a BITS character long buffer (so that 8 codes will
+ // fit in it exactly). Use the VAX insv instruction to insert each
+ // code in turn. When the buffer fills up empty it and start over.
+
+ /*private*/ var cur_accum/*int*/ = 0;
+ /*private*/ var cur_bits/*int*/ = 0;
+ /*private*/ var masks/*Array*/ = [ 0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF ];
+
+ // Number of characters so far in this 'packet'
+ /*private*/ var a_count/*int*/;
+
+ // Define the storage for the packet accumulator
+ /*private*/ var accum/*ByteArray*/ = [];
+
+ var LZWEncoder = exports.LZWEncoder = function LZWEncoder (width/*int*/, height/*int*/, pixels/*ByteArray*/, color_depth/*int*/)
+ {
+
+ imgW = width;
+ imgH = height;
+ pixAry = pixels;
+ initCodeSize = Math.max(2, color_depth);
+
+ }
+
+ // Add a character to the end of the current packet, and if it is 254
+ // characters, flush the packet to disk.
+ var char_out = function char_out(c/*Number*/, outs/*ByteArray*/)/*void*/
+ {
+ accum[a_count++] = c;
+ if (a_count >= 254) flush_char(outs);
+
+ }
+
+ // Clear out the hash table
+ // table clear for block compress
+
+ var cl_block = function cl_block(outs/*ByteArray*/)/*void*/
+ {
+
+ cl_hash(hsize);
+ free_ent = ClearCode + 2;
+ clear_flg = true;
+ output(ClearCode, outs);
+
+ }
+
+ // reset code table
+ var cl_hash = function cl_hash(hsize/*int*/)/*void*/
+ {
+
+ for (var i/*int*/ = 0; i < hsize; ++i) htab[i] = -1;
+
+ }
+
+ var compress = exports.compress = function compress(init_bits/*int*/, outs/*ByteArray*/)/*void*/
+
+ {
+ var fcode/*int*/;
+ var i/*int*/ /* = 0 */;
+ var c/*int*/;
+ var ent/*int*/;
+ var disp/*int*/;
+ var hsize_reg/*int*/;
+ var hshift/*int*/;
+
+ // Set up the globals: g_init_bits - initial number of bits
+ g_init_bits = init_bits;
+
+ // Set up the necessary values
+ clear_flg = false;
+ n_bits = g_init_bits;
+ maxcode = MAXCODE(n_bits);
+
+ ClearCode = 1 << (init_bits - 1);
+ EOFCode = ClearCode + 1;
+ free_ent = ClearCode + 2;
+
+ a_count = 0; // clear packet
+
+ ent = nextPixel();
+
+ hshift = 0;
+ for (fcode = hsize; fcode < 65536; fcode *= 2)
+ ++hshift;
+ hshift = 8 - hshift; // set hash code range bound
+
+ hsize_reg = hsize;
+ cl_hash(hsize_reg); // clear hash table
+
+ output(ClearCode, outs);
+
+ outer_loop: while ((c = nextPixel()) != EOF)
+
+ {
+
+ fcode = (c << maxbits) + ent;
+ i = (c << hshift) ^ ent; // xor hashing
+
+ if (htab[i] == fcode)
+ {
+ ent = codetab[i];
+ continue;
+ } else if (htab[i] >= 0) // non-empty slot
+ {
+ disp = hsize_reg - i; // secondary hash (after G. Knott)
+ if (i == 0)
+ disp = 1;
+ do
+ {
+
+ if ((i -= disp) < 0) i += hsize_reg;
+
+ if (htab[i] == fcode)
+ {
+ ent = codetab[i];
+ continue outer_loop;
+ }
+ } while (htab[i] >= 0);
+ }
+
+ output(ent, outs);
+ ent = c;
+ if (free_ent < maxmaxcode)
+ {
+ codetab[i] = free_ent++; // code -> hashtable
+ htab[i] = fcode;
+ } else cl_block(outs);
+ }
+
+ // Put out the final code.
+ output(ent, outs);
+ output(EOFCode, outs);
+
+ }
+
+ // ----------------------------------------------------------------------------
+ var encode = exports.encode = function encode(os/*ByteArray*/)/*void*/
+ {
+ os.writeByte(initCodeSize); // write "initial code size" byte
+ remaining = imgW * imgH; // reset navigation variables
+ curPixel = 0;
+ compress(initCodeSize + 1, os); // compress and write the pixel data
+ os.writeByte(0); // write block terminator
+
+ }
+
+ // Flush the packet to disk, and reset the accumulator
+ var flush_char = function flush_char(outs/*ByteArray*/)/*void*/
+ {
+
+ if (a_count > 0)
+ {
+ outs.writeByte(a_count);
+ outs.writeBytes(accum, 0, a_count);
+ a_count = 0;
+ }
+
+ }
+
+ var MAXCODE = function MAXCODE(n_bits/*int*/)/*int*/
+ {
+
+ return (1 << n_bits) - 1;
+
+ }
+
+ // ----------------------------------------------------------------------------
+ // Return the next pixel from the image
+ // ----------------------------------------------------------------------------
+
+ var nextPixel = function nextPixel()/*int*/
+ {
+
+ if (remaining == 0) return EOF;
+
+ --remaining;
+
+ var pix/*Number*/ = pixAry[curPixel++];
+
+ return pix & 0xff;
+
+ }
+
+ var output = function output(code/*int*/, outs/*ByteArray*/)/*void*/
+
+ {
+ cur_accum &= masks[cur_bits];
+
+ if (cur_bits > 0) cur_accum |= (code << cur_bits);
+ else cur_accum = code;
+
+ cur_bits += n_bits;
+
+ while (cur_bits >= 8)
+
+ {
+
+ char_out((cur_accum & 0xff), outs);
+ cur_accum >>= 8;
+ cur_bits -= 8;
+
+ }
+
+ // If the next entry is going to be too big for the code size,
+ // then increase it, if possible.
+
+ if (free_ent > maxcode || clear_flg)
+ {
+
+ if (clear_flg)
+ {
+
+ maxcode = MAXCODE(n_bits = g_init_bits);
+ clear_flg = false;
+
+ } else
+ {
+
+ ++n_bits;
+
+ if (n_bits == maxbits) maxcode = maxmaxcode;
+
+ else maxcode = MAXCODE(n_bits);
+
+ }
+
+ }
+
+ if (code == EOFCode)
+ {
+
+ // At EOF, write the rest of the buffer.
+ while (cur_bits > 0)
+ {
+
+ char_out((cur_accum & 0xff), outs);
+ cur_accum >>= 8;
+ cur_bits -= 8;
+ }
+
+
+ flush_char(outs);
+
+ }
+
+ }
+ LZWEncoder.apply(this, arguments);
+ return exports;
+}
+
diff --git a/js/gif-encode/NeuQuant.js b/js/gif-encode/NeuQuant.js new file mode 100644 index 0000000..91424ba --- /dev/null +++ b/js/gif-encode/NeuQuant.js @@ -0,0 +1,538 @@ +/*
+* NeuQuant Neural-Net Quantization Algorithm
+* ------------------------------------------
+*
+* Copyright (c) 1994 Anthony Dekker
+*
+* NEUQUANT Neural-Net quantization algorithm by Anthony Dekker, 1994. See
+* "Kohonen neural networks for optimal colour quantization" in "Network:
+* Computation in Neural Systems" Vol. 5 (1994) pp 351-367. for a discussion of
+* the algorithm.
+*
+* Any party obtaining a copy of these files from the author, directly or
+* indirectly, is granted, free of charge, a full and unrestricted irrevocable,
+* world-wide, paid up, royalty-free, nonexclusive right and license to deal in
+* this software and documentation files (the "Software"), including without
+* limitation the rights to use, copy, modify, merge, publish, distribute,
+* sublicense, and/or sell copies of the Software, and to permit persons who
+* receive copies from any such party to do so, with the only requirement being
+* that this copyright notice remain intact.
+*/
+
+/*
+* This class handles Neural-Net quantization algorithm
+* @author Kevin Weiner (original Java version - kweiner@fmsware.com)
+* @author Thibault Imbert (AS3 version - bytearray.org)
+* @version 0.1 AS3 implementation
+*/
+
+//import flash.utils.ByteArray;
+
+NeuQuant = function() {
+ var exports = {};
+ var netsize = 128; /* number of colours used */
+
+ /* four primes near 500 - assume no image has a length so large */
+ /* that it is divisible by all four primes */
+
+ var prime1 = 499;
+ var prime2 = 491;
+ var prime3 = 487;
+ var prime4 = 503;
+ var minpicturebytes = (3 * prime4);
+
+ /* minimum size for input image */
+ /*
+ * Program Skeleton ---------------- [select samplefac in range 1..30] [read
+ * image from input file] pic = (unsigned char*) malloc(3*width*height);
+ * initnet(pic,3*width*height,samplefac); learn(); unbiasnet(); [write output
+ * image header, using writecolourmap(f)] inxbuild(); write output image using
+ * inxsearch(b,g,r)
+ */
+
+ /*
+ * Network Definitions -------------------
+ */
+
+ var maxnetpos = (netsize - 1);
+ var netbiasshift = 4; /* bias for colour values */
+ var ncycles = 100; /* no. of learning cycles */
+
+ /* defs for freq and bias */
+ var intbiasshift = 16; /* bias for fractions */
+ var intbias = (1 << intbiasshift);
+ var gammashift = 10; /* gamma = 1024 */
+ var gamma = (1 << gammashift);
+ var betashift = 10;
+ var beta = (intbias >> betashift); /* beta = 1/1024 */
+ var betagamma = (intbias << (gammashift - betashift));
+
+ /* defs for decreasing radius factor */
+ var initrad = (netsize >> 3); /* for 256 cols, radius starts */
+ var radiusbiasshift = 6; /* at 32.0 biased by 6 bits */
+ var radiusbias = (1 << radiusbiasshift);
+ var initradius = (initrad * radiusbias); /* and decreases by a */
+ var radiusdec = 30; /* factor of 1/30 each cycle */
+
+ /* defs for decreasing alpha factor */
+ var alphabiasshift = 10; /* alpha starts at 1.0 */
+ var initalpha = (1 << alphabiasshift);
+ var alphadec /* biased by 10 bits */
+
+ /* radbias and alpharadbias used for radpower calculation */
+ var radbiasshift = 8;
+ var radbias = (1 << radbiasshift);
+ var alpharadbshift = (alphabiasshift + radbiasshift);
+
+ var alpharadbias = (1 << alpharadbshift);
+
+ /*
+ * Types and Global Variables --------------------------
+ */
+
+ var thepicture/*ByteArray*//* the input image itself */
+ var lengthcount; /* lengthcount = H*W*3 */
+ var samplefac; /* sampling factor 1..30 */
+
+ // typedef int pixel[4]; /* BGRc */
+ var network; /* the network itself - [netsize][4] */
+ var netindex = new Array();
+
+ /* for network lookup - really 256 */
+ var bias = new Array();
+
+ /* bias and freq arrays for learning */
+ var freq = new Array();
+ var radpower = new Array();
+
+ var NeuQuant = exports.NeuQuant = function NeuQuant(thepic, len, sample) {
+
+ // with no input, assume we'll load in a lobotomized neuquant later.
+ // otherwise, initialize the neural net stuff
+
+ if (thepic && len && sample) {
+ var i;
+ var p;
+
+ thepicture = thepic;
+ lengthcount = len;
+ samplefac = sample;
+
+ network = new Array(netsize);
+
+ for (i = 0; i < netsize; i++) {
+ network[i] = new Array(4);
+ p = network[i];
+ p[0] = p[1] = p[2] = (i << (netbiasshift + 8)) / netsize;
+ freq[i] = intbias / netsize; /* 1/netsize */
+ bias[i] = 0;
+ }
+ }
+ }
+
+ var colorMap = function colorMap() {
+ var map/*ByteArray*/ = [];
+ var index = new Array(netsize);
+ for (var i = 0; i < netsize; i++) {
+ index[network[i][3]] = i;
+ }
+ var k = 0;
+ for (var l = 0; l < netsize; l++) {
+ var j = index[l];
+ map[k++] = (network[j][0]);
+ map[k++] = (network[j][1]);
+ map[k++] = (network[j][2]);
+ }
+ return map;
+ }
+
+ /*
+ * Insertion sort of network and building of netindex[0..255] (to do after
+ * unbias)
+ * -------------------------------------------------------------------------------
+ */
+
+ var inxbuild = function inxbuild() {
+ var i;
+ var j;
+ var smallpos;
+ var smallval;
+ var p;
+ var q;
+ var previouscol
+ var startpos
+
+ previouscol = 0;
+ startpos = 0;
+ for (i = 0; i < netsize; i++) {
+ p = network[i];
+ smallpos = i;
+ smallval = p[1]; /* index on g */
+ /* find smallest in i..netsize-1 */
+ for (j = i + 1; j < netsize; j++) {
+ q = network[j];
+ if (q[1] < smallval) { /* index on g */
+ smallpos = j;
+ smallval = q[1]; /* index on g */
+ }
+ }
+
+ q = network[smallpos];
+ /* swap p (i) and q (smallpos) entries */
+
+ if (i != smallpos) {
+ j = q[0];
+ q[0] = p[0];
+ p[0] = j;
+ j = q[1];
+ q[1] = p[1];
+ p[1] = j;
+ j = q[2];
+ q[2] = p[2];
+ p[2] = j;
+ j = q[3];
+ q[3] = p[3];
+ p[3] = j;
+ }
+
+ /* smallval entry is now in position i */
+
+ if (smallval != previouscol) {
+ netindex[previouscol] = (startpos + i) >> 1;
+
+ for (j = previouscol + 1; j < smallval; j++) netindex[j] = i;
+
+ previouscol = smallval;
+ startpos = i;
+ }
+ }
+
+ netindex[previouscol] = (startpos + maxnetpos) >> 1;
+ for (j = previouscol + 1; j < 256; j++) netindex[j] = maxnetpos; /* really 256 */
+ }
+
+ /*
+ * Main Learning Loop ------------------
+ */
+
+ var learn = function learn() {
+ var i;
+ var j;
+ var b;
+ var g
+ var r;
+ var radius;
+ var rad;
+ var alpha;
+ var step;
+ var delta;
+ var samplepixels;
+ var p/*ByteArray*/;
+ var pix;
+ var lim;
+
+ if (lengthcount < minpicturebytes) samplefac = 1;
+
+ alphadec = 30 + ((samplefac - 1) / 3);
+ p = thepicture;
+ pix = 0;
+ lim = lengthcount;
+ samplepixels = lengthcount / (3 * samplefac);
+ delta = samplepixels / ncycles;
+ alpha = initalpha;
+ radius = initradius;
+
+ rad = radius >> radiusbiasshift;
+ if (rad <= 1) rad = 0;
+
+ for (i = 0; i < rad; i++) radpower[i] = alpha * (((rad * rad - i * i) * radbias) / (rad * rad));
+
+ if (lengthcount < minpicturebytes) step = 3;
+ else if ((lengthcount % prime1) != 0) step = 3 * prime1;
+ else if ((lengthcount % prime2) != 0) step = 3 * prime2;
+ else if ((lengthcount % prime3) != 0) step = 3 * prime3;
+ else step = 3 * prime4;
+
+ i = 0;
+
+ while (i < samplepixels) {
+ b = (p[pix + 0] & 0xff) << netbiasshift;
+ g = (p[pix + 1] & 0xff) << netbiasshift;
+ r = (p[pix + 2] & 0xff) << netbiasshift;
+ j = contest(b, g, r);
+
+ altersingle(alpha, j, b, g, r);
+
+ if (rad != 0) alterneigh(rad, j, b, g, r); /* alter neighbours */
+
+ pix += step;
+
+ if (pix >= lim) pix -= lengthcount;
+
+ i++;
+
+ if (delta == 0) delta = 1;
+
+ if (i % delta == 0) {
+ alpha -= alpha / alphadec;
+ radius -= radius / radiusdec;
+ rad = radius >> radiusbiasshift;
+
+ if (rad <= 1) rad = 0;
+
+ for (j = 0; j < rad; j++) radpower[j] = alpha * (((rad * rad - j * j) * radbias) / (rad * rad));
+ }
+ }
+ }
+
+
+ /* Save the neural network so we can load it back in on another worker.
+ */
+ var save = exports.save = function(){
+ var data = {
+ netindex: netindex,
+ netsize: netsize,
+ network: network
+ };
+ return data;
+ }
+ var load = exports.load = function(data){
+ netindex = data.netindex;
+ netsize = data.netsize;
+ network = data.network;
+ }
+
+
+ /*
+ ** Search for BGR values 0..255 (after net is unbiased) and return colour
+ * index
+ * ----------------------------------------------------------------------------
+ */
+
+ var map = exports.map = function map(b, g, r) {
+ var i;
+ var j;
+ var dist
+ var a;
+ var bestd;
+ var p;
+ var best;
+
+ bestd = 1000; /* biggest possible dist is 256*3 */
+ best = -1;
+ i = netindex[g]; /* index on g */
+ j = i - 1; /* start at netindex[g] and work outwards */
+
+ while ((i < netsize) || (j >= 0)) {
+ if (i < netsize) {
+ p = network[i];
+ dist = p[1] - g; /* inx key */
+ if (dist >= bestd) i = netsize; /* stop iter */
+ else {
+ i++;
+
+ if (dist < 0) dist = -dist;
+
+ a = p[0] - b;
+
+ if (a < 0) a = -a;
+
+ dist += a;
+
+ if (dist < bestd) {
+ a = p[2] - r;
+
+ if (a < 0) a = -a;
+
+ dist += a;
+
+ if (dist < bestd) {
+ bestd = dist;
+ best = p[3];
+ }
+ }
+ }
+ }
+ if (j >= 0) {
+ p = network[j];
+
+ dist = g - p[1]; /* inx key - reverse dif */
+
+ if (dist >= bestd) j = -1; /* stop iter */
+ else {
+ j--;
+ if (dist < 0) dist = -dist;
+ a = p[0] - b;
+ if (a < 0) a = -a;
+ dist += a;
+
+ if (dist < bestd) {
+ a = p[2] - r;
+ if (a < 0)a = -a;
+ dist += a;
+ if (dist < bestd) {
+ bestd = dist;
+ best = p[3];
+ }
+ }
+ }
+ }
+ }
+ return best;
+ }
+
+ var process = exports.process = function process() {
+ learn();
+ unbiasnet();
+ inxbuild();
+ return colorMap();
+ }
+
+ /*
+ * Unbias network to give byte values 0..255 and record position i to prepare
+ * for sort
+ * -----------------------------------------------------------------------------------
+ */
+
+ var unbiasnet = function unbiasnet() {
+ var i;
+ var j;
+ for (i = 0; i < netsize; i++) {
+ network[i][0] >>= netbiasshift;
+ network[i][1] >>= netbiasshift;
+ network[i][2] >>= netbiasshift;
+ network[i][3] = i; /* record colour no */
+ }
+ }
+
+ /*
+ * Move adjacent neurons by precomputed alpha*(1-((i-j)^2/[r]^2)) in
+ * radpower[|i-j|]
+ * ---------------------------------------------------------------------------------
+ */
+
+ var alterneigh = function alterneigh(rad, i, b, g, r) {
+ var j;
+ var k;
+ var lo;
+ var hi;
+ var a;
+ var m;
+ var p;
+
+ lo = i - rad;
+ if (lo < -1) lo = -1;
+
+ hi = i + rad;
+
+ if (hi > netsize) hi = netsize;
+
+ j = i + 1;
+ k = i - 1;
+ m = 1;
+
+ while ((j < hi) || (k > lo)) {
+ a = radpower[m++];
+ if (j < hi) {
+ p = network[j++];
+
+ try {
+ p[0] -= (a * (p[0] - b)) / alpharadbias;
+ p[1] -= (a * (p[1] - g)) / alpharadbias;
+ p[2] -= (a * (p[2] - r)) / alpharadbias;
+ } catch (e/*Error*/) {} // prevents 1.3 miscompilation
+ }
+
+ if (k > lo) {
+ p = network[k--];
+ try {
+ p[0] -= (a * (p[0] - b)) / alpharadbias;
+ p[1] -= (a * (p[1] - g)) / alpharadbias;
+ p[2] -= (a * (p[2] - r)) / alpharadbias;
+ } catch (e/*Error*/) {}
+ }
+ }
+ }
+
+ /*
+ * Move neuron i towards biased (b,g,r) by factor alpha
+ * ----------------------------------------------------
+ */
+
+ var altersingle = function altersingle(alpha, i, b, g, r) {
+ /* alter hit neuron */
+ var n = network[i];
+ n[0] -= (alpha * (n[0] - b)) / initalpha;
+ n[1] -= (alpha * (n[1] - g)) / initalpha;
+ n[2] -= (alpha * (n[2] - r)) / initalpha;
+ }
+
+ /*
+ * Search for biased BGR values ----------------------------
+ */
+
+ var contest = function contest(b, g, r) {
+ /* finds closest neuron (min dist) and updates freq */
+ /* finds best neuron (min dist-bias) and returns position */
+ /* for frequently chosen neurons, freq[i] is high and bias[i] is negative */
+ /* bias[i] = gamma*((1/netsize)-freq[i]) */
+
+ var i;
+ var dist;
+ var a;
+ var biasdist;
+ var betafreq;
+ var bestpos;
+ var bestbiaspos;
+ var bestd;
+ var bestbiasd;
+ var n;
+
+ bestd = ~(1 << 31);
+ bestbiasd = bestd;
+ bestpos = -1;
+ bestbiaspos = bestpos;
+
+ for (i = 0; i < netsize; i++) {
+ n = network[i];
+ dist = n[0] - b;
+
+ if (dist < 0) dist = -dist;
+
+ a = n[1] - g;
+
+ if (a < 0) a = -a;
+
+ dist += a;
+
+ a = n[2] - r;
+
+ if (a < 0) a = -a;
+
+ dist += a;
+
+ if (dist < bestd) {
+ bestd = dist;
+ bestpos = i;
+ }
+
+ biasdist = dist - ((bias[i]) >> (intbiasshift - netbiasshift));
+
+ if (biasdist < bestbiasd) {
+ bestbiasd = biasdist;
+ bestbiaspos = i;
+ }
+
+ betafreq = (freq[i] >> betashift);
+ freq[i] -= betafreq;
+ bias[i] += (betafreq << gammashift);
+ }
+
+ freq[bestpos] += beta;
+ bias[bestpos] -= betagamma;
+ return (bestbiaspos);
+ }
+
+ NeuQuant.apply(this, arguments);
+ return exports;
+}
diff --git a/js/gif-encode/client.js b/js/gif-encode/client.js new file mode 100644 index 0000000..271cbb0 --- /dev/null +++ b/js/gif-encode/client.js @@ -0,0 +1,279 @@ +// Total frames to record +var FRAMES_PER_GIF = 36; + +// Frames per second to read from the video +var FPS = 12; + +// Per-frame delay in milliseconds +var DELAY = Math.floor( 1000 / FPS ); + +// Number of WebWorkers to create +var WORKERS = 4; + +// Number of frames to use to build the gif palette (takes longest) +var FRAMES_TO_QUANTIZE = 4; + +// Upload these gifs when finished?? +var DO_UPLOAD = true; + +function GifEncoder(){ + var base = this; + this.working = false; + var canvases = []; + var contexts = []; + var frames = []; + var delays = []; + var width = 0; + var height = 0; + var frames_done = 0; + + var initted = Date.now(); + var started = Date.now(); + var tube = base.tube = new Tube () + + var workers = new Factory (); + + var width, height; + var neuquant, colortab; + + workers.hire("message", receiveMessage); + workers.hire("quantize", receiveQuantize); + workers.hire("encode", receiveEncode); + + var reset = this.reset = function(){ + resetFrames() + neuquant = null; + colortab = null; + base.quantized = false + } + var resetFrames = this.resetFrames = function(){ + canvases = []; + contexts = []; + frames = []; + delays = []; + width = 0; + height = 0; + frames_done = 0; + } + + this.on = function(){ + base.tube.on.apply(base.tube, arguments) + }; + + this.off = function(){ + base.tube.off.apply(base.tube, arguments) + }; + + var addFrame = this.addFrame = function(canvas, delay) { + var ctx = canvas.getContext('2d'); + canvases.push(canvas); + contexts.push(ctx); + delays.push(delay); + + if (canvases.length == 1) { + width = canvas.width; + height = canvas.height; + } + } + + var addFrames = this.addFrames = function(canvas_array, delay){ + for (var i = 0; i < canvas_array.length; i++) { + var canvas = canvas_array[i] + var ctx = canvas.getContext('2d'); + canvases.push(canvas); + contexts.push(ctx); + delays.push(delay); + } + + if (canvases.length == canvas_array.length) { + width = canvas_array[0].width; + height = canvas_array[0].height; + } + } + + var copyFrame = this.copyFrame = function(canvas, delay) { + var newCanvas = document.createElement("canvas"); + var ctx = newCanvas.getContext('2d'); + + ctx.drawImage(canvas, 0, 0, canvas.width, canvas.height); + + canvases.push(newCanvas); + contexts.push(ctx); + delays.push(delay); + + if (canvases.length == 1) { + width = canvas.width; + height = canvas.height; + } + } + + function Factory () { + var base = this; + var w = 0; // which worker to work next + var ww = []; + base.init = function(){ + for (var i = 0; i < WORKERS; i++) { + var worker = new Worker('js/vendor/gif-encode/worker.js'); + worker.onmessage = base.receiveWork; + ww.push(worker); + } + } + var tasks = {}; + base.hire = function(task, cb){ + tasks[task] = cb; + } + base.work = function(job){ + ww[++w % ww.length].postMessage(job); + } + base.receiveWork = function(e){ + e.data.task in tasks && tasks[e.data.task](e); + } + base.init(); + } + + function receiveMessage(e){ + console.log("[WORKER]", e.data.message); + } + + var neuquant, colortab; + var quantize = this.quantize = function () { + initted = Date.now(); + started = Date.now(); + var spritedata = spriteSheet(FRAMES_TO_QUANTIZE); + + workers.work({ + task: 'quantize', + imageData: spritedata + }); + } + + function receiveQuantize(e) { + console.log(Date.now() - started, "quantization done"); + neuquant = e.data.neuquant; + colortab = e.data.colortab; + base.quantized = true + base.tube("quantized") + } + + var encode = this.encode = function (nq, ct) { + if (! canvases.length) { + throw Error ("No frames to encode") + } + nq = nq || neuquant + ct = ct || colortab + + started = Date.now(); + frames_done = 0; + + console.log('working .... '); + var i = 0; + + function sendWork () { + if (i == canvases.length) return doneSending(); + + var ctx = contexts[i]; + var imdata = ctx.getImageData(0, 0, width, height).data; + var delay = delays[i]; + + workers.work({ + task: 'encode', + frame_index: i, + frame_length: contexts.length-1, + height: height, + width: width, + delay: delay, + imageData: imdata, + neuquant: neuquant, + colortab: colortab + }); + + i++; + setTimeout(sendWork, 16); + } + function doneSending(){ + base.tube("done_sending") + } + sendWork(); + } + + function receiveEncode(e){ + var frame_index = e.data["frame_index"]; + var frame_data = e.data["frame_data"]; + + frames[frame_index] = frame_data; + + base.tube("encoded-frame", frames.length, canvases.length) + for (var j = 0; j < canvases.length; j++) { + if (frames[j] == null) { + return; + } + } + console.log("FINISHED " + canvases.length); + var binary_gif = frames.join(''); + var base64_gif = window.btoa(binary_gif); + var data_url = 'data:image/gif;base64,'+base64_gif; + + base.working = false; + + // photo.setAttribute('src', data_url); + // ui.doneEncodingPicture(); + base.tube("rendered", binary_gif) + base.tube("rendered-url", data_url) +// if (DO_UPLOAD) upload( base64_gif ); + + console.log((Date.now() - started), "processed frames"); + console.log((Date.now() - initted), "done"); + } + +// function upload (base64_gif) { +// $("#working").html("UPLOADING") +// +// console.log("starting upload") +// var params = { +// url: base64_gif +// } +// $.ajax({ +// 'url': "/photos.json", +// 'type': 'post', +// 'data': csrf(params), +// 'success': function(data){ +// +// // $("#share").data("href", "/photos/" + data.hash) +// // $("#share, #make-another").fadeIn(400); +// console.log(data); +// console.log((Date.now() - started), "uploaded"); +// // $("#photo").attr("src", data.url); +// // window.location.href = "/photos/" + data.hash +// localStorage.setItem('hash', data.hash) +// window.location.href = "/" +// // data.hash +// } +// }); +// console.log("ok"); +// } + + function spriteSheet (frameCount) { + var start = Date.now(); + frameCount = Math.min(contexts.length, frameCount); + var sprites = document.createElement("canvas"); + var spriteContext = sprites.getContext('2d'); + sprites.width = width; + sprites.height = height * frameCount; + var spritedata = spriteContext.getImageData(0, 0, sprites.width, sprites.height) + var spritedatadata = spritedata.data + var j = 0; + var ctxz = sample(contexts, 4); + while (frameCount--) { + var ctx = ctxz[frameCount]; + var imdata = ctx.getImageData(0, 0, width, height).data; + for (var n = 0; n < imdata.length; j++, n++) { + spritedatadata[j] = imdata[n]; + } + } + // spriteContext.putImageData(spritedata, 0, 0, 0, 0, sprites.width, sprites.height); + // upload( sprites.toDataURL("image/png").split(",")[1] + console.log(Date.now() - start, "built spritesheet"); + return spritedata; + } + +} diff --git a/js/gif-encode/tube.js b/js/gif-encode/tube.js new file mode 100644 index 0000000..17d3bfd --- /dev/null +++ b/js/gif-encode/tube.js @@ -0,0 +1,323 @@ +var nextTick = (function(){ + // postMessage behaves badly on IE8 + if (window.ActiveXObject || !window.postMessage) { + var nextTick = function(fn) { + setTimeout(fn, 0); + } + } else { + // based on setZeroTimeout by David Baron + // - http://dbaron.org/log/20100309-faster-timeouts + var timeouts = [] + , name = 'next-tick-zero-timeout' + + window.addEventListener('message', function(e){ + if (e.source == window && e.data == name) { + if (e.stopPropagation) e.stopPropagation(); + if (timeouts.length) timeouts.shift()(); + } + }, true); + + var nextTick = function(fn){ + timeouts.push(fn); + window.postMessage(name, '*'); + } + } + + return nextTick; +})() + +var Uid = (function(){ + var id = 0 + return function(){ return id++ + "" } +})() + + +var tokenize = (function(){ + var tokenize = function(str, splitOn){ + return str + .trim() + .split(splitOn || tokenize.default); + }; + + tokenize.default = /\s+/g; + + return tokenize; +})() + +// globber("*".split(":"), "a:b:c".split(":")) => true +// globber("*:c".split(":"), "a:b:c".split(":")) => true +// globber("a:*".split(":"), "a:b:c".split(":")) => true +// globber("a:*:c".split(":"), "a:b:c".split(":")) => true + +// based on codegolf.stackexchange.com/questions/467/implement-glob-matcher +var globber = function(patterns, strings) { + // console.log("globber called with: " + patterns.join(":"), strings.join(":")) + var first = patterns[0], + rest = patterns.slice(1), + len = strings.length, + matchFound; + + if(first === '*') { + for(var i = 0; i <= len; ++i) { + // console.log("* " + i + " trying " + rest.join(":") + " with " + strings.slice(i).join(":")) + if(globber(rest, strings.slice(i))) return true; + } + return false; + } else { + matchFound = (first === strings[0]); + // console.log ("literal matching " + first + " " + strings[0] + " " + !!matched) + } + + return matchFound && ((!rest.length && !len) || globber(rest, strings.slice(1))); +}; + +var setproto = function(obj, proto){ + if (obj.__proto__) + obj.__proto__ = proto; + else + for (var key in proto) + obj[key] = proto[key]; +}; + + +var Tube = (function(){ + var globcache = {}; + var Tube = function(opts){ + opts = opts || {}; + if (opts.queue){ + var c = function(){ + var args = arguments; + // queueOrNextTick (function(){ c.send.apply(c, args) }); + nextTick (function(){ c.send.apply(c, args) }); + return c; + }; + } else { + var c = function(){ + c.send.apply(c, arguments); + return c; + }; + } + + setproto(c, Tube.proto); + c.listeners = {}; + c.globListeners = {}; + + return c; + }; + + Tube.total = {}; + Tube.proto = {}; + + /* + adds fns as listeners to a channel + + on("msg", fn, {opts}) + on("msg", [fn, fn2], {opts}) + on("msg msg2 msg3", fn, {opts}) + on({"msg": fn, "msg2": fn2}, {opts}) + */ + + Tube.proto.on = function(){ + var chan = this; + if (typeof arguments[0] === "string") { + //if (arguments.length > 1) { // on("msg", f) + var msgMap = {}; + msgMap[arguments[0]] = arguments[1]; + var opts = arguments[2] || {}; + } else { // on({"msg": f, ...}) + var msgMap = arguments[0]; + var opts = arguments[1] || {}; + } + + for (var string in msgMap){ + var msgs = string.split(" "); + var fs = msgMap[string]; + if (!Array.isArray(fs)) fs = [fs]; + + for(var i=0, f; f=fs[i]; i++){ + if (!f.uid) f.uid = Uid(); + } + + for(var i=0, msg; msg=msgs[i]; i++){ + var listeners = (msg.indexOf("*") === -1) ? + chan.listeners : + chan.globListeners; + + // todo: this probably wastes a lot of memory? + // make a copy of the listener, add to it, and replace the listener + // why not just push directly? + // send might be iterating over it... and that will fuck up the iteration + + listeners[msg] = (msg in listeners) ? + listeners[msg].concat(fs) : + fs.concat(); + } + } + + return chan; + }; + + /* + off() + off("a:b:c") + off(f) + off("a:b:c", f) + off("a:b:c d:e:f") + off([f, f2]) + off({"a": f, "b": f2}) + */ + + Tube.proto.off = function(){ var chan = this; + + var listeners, i, msgs, msg; + + // off() : delete all listeners. but replace, instead of delete + if (arguments.length === 0) { + chan.listeners = {}; + chan.globListeners = {}; + return chan; + } + + // off("a:b:c d:e:f") + // remove all matching listeners + if (arguments.length === 1 && typeof arguments[0] === "string"){ + // question... will this fuck up send if we delete in the middle of it dispatching? + msgs = arguments[0].split(" "); + + for (i=0; msg=msgs[i]; i++){ + delete chan.listeners[msg]; + delete chan.globListeners[msg]; + } + return chan; + } + + // off(f) or off([f, f2]) + // remove all matching functions + if (typeof arguments[0] === "function" || Array.isArray(arguments[0])) { + var fs = (typeof arguments[0] === "function") ? + [arguments[0]] : + arguments[0]; + // TODO + return chan; + } + + // off("a:b:c", f) or off({"a": f, "b": f2}) + if (arguments.length > 1) { // off("msg", f) + var msgMap = {}; + msgMap[arguments[0]] = arguments[1]; + } else { // off({"msg": f, ...}) + var msgMap = arguments[0]; + } + + for (var string in msgMap){ + msgs = string.split(" "); + + var fs = msgMap[string]; + if (typeof fs === "function") fs = [fs]; + + for(var i=0; msg=msgs[i]; i++){ + if (msg in chan.listeners) + listeners = chan.listeners; + else if (msg in chan.globListeners) + listeners = chan.globListeners; + else + continue; + + // gotta do this carefully in case we are still iterating through the listener in send + // build a new array and assign it to the property, instead of mutating it. + + // console.log(" length of listeners[" + msg + "]: " + listeners[msg].length) + // console.log(listeners[msg].join(",")); + // console.log(fs.join(",")); + + listeners[msg] = listeners[msg].filter( + function(f){ return fs.indexOf(f) === -1 } + ); + + // console.log(" length of listeners[" + msg + "]: " + listeners[msg].length) + + } + } + + return chan; + + }; + + /* + c = Tube() + c.on("foo", fn) + c("foo", "bar", []) + + will call fn("bar", [], "foo") + */ + + Tube.proto.send = function(msgString /*, data... */){ + // todo: don't do this? + if (!Tube.total[msgString]) Tube.total[msgString] = 0 + Tube.total[msgString]+=1; + + var listener, + listeners = this.listeners, + globListeners = this.globListeners, + //args = Array.prototype.splice.call(arguments, 1), + msgs = tokenize(msgString), + msg, f; + + if (arguments.length) { + var args = Array.prototype.splice.call(arguments, 1); + args.push(msgString); + + } else { + var args = []; + } + + for (var m=0; msg=msgs[m]; m++){ + + var fsToRun = []; + var uidKeyFnValue = {}; + var uidKeyMsgStringValue = {}; + + // note this will die on errors + // todo: implement http://dean.edwards.name/weblog/2009/03/callbacks-vs-events/ + // exact matches + if (listener = listeners[msg]) { + for (var i=0; f=listener[i]; i++){ + // fsToRun.push([f, msg]); + uidKeyFnValue[f.uid] = f; + uidKeyMsgStringValue[f.uid] = msg; + } + } + + // glob matches + var msgSplit = msg.split(":"); + + for (var pattern in globListeners){ + + if (pattern !== "*") { // * always matches + var patternSplit = globcache[pattern] || (globcache[pattern] = pattern.split(":")); + if (!globber(patternSplit, msgSplit)) continue; + } + + listener = globListeners[pattern]; + + for (var i=0; f=listener[i]; i++){ + //f.apply(window, args); // hm possibly pass the actual message to the func + // fsToRun.push([f, msg]); + uidKeyFnValue[f.uid] = f; + uidKeyMsgStringValue[f.uid] = msg; + } + } + + var fns = []; + for (var f in uidKeyFnValue) fns.push(uidKeyFnValue[f]); + + for (var i=0, f; f=fns[i]; i++) + f.apply(f, args); + + } + return this; + }; + + return Tube; +})() + diff --git a/js/gif-encode/util.js b/js/gif-encode/util.js new file mode 100644 index 0000000..92d8129 --- /dev/null +++ b/js/gif-encode/util.js @@ -0,0 +1,15 @@ +function shuffle(a){ + var aa = new Array(a.length); + aa[0] = a[0]; + + for (var i = 1; i < a.length; i++) { + var j = Math.floor( Math.random() * i ); + aa[i] = aa[j]; + aa[j] = a[i]; + } + return aa; +} +function sample(a, n) { + var aa = shuffle(a); + return aa.slice(0,n); +} diff --git a/js/gif-encode/worker.js b/js/gif-encode/worker.js new file mode 100644 index 0000000..b2f32d4 --- /dev/null +++ b/js/gif-encode/worker.js @@ -0,0 +1,88 @@ +importScripts('LZWEncoder.js', 'NeuQuant.js', 'GIFEncoder.js'); + +self.onmessage = function(event) { + var data = event.data; + var task = data['task']; + switch (task) { + case 'encode': + encode (data); + break; + case 'quantize': + quantize(data); + break; + } +} + +function log(msg) { + self.postMessage({ + task: 'message', + message: msg + }); +} + +function quantize (data) { + var imageData = data["imageData"]; + var pixels = discardAlphaChannel( imageData.data ); + + var nq = new NeuQuant (pixels, pixels.length, 1); + var colortab = nq.process(); + + self.postMessage({ + task: 'quantize', + neuquant: nq.save(), + colortab: colortab + }); +} + +function discardAlphaChannel( imageData ) { + var pixels = []; + + for ( var i = 0, b = 0, _len = imageData.length; i < _len; b += 4 ) { + pixels[i++] = imageData[b]; + pixels[i++] = imageData[b+1]; + pixels[i++] = imageData[b+2]; + } + return pixels; +} + +function encode (data) { + var frame_index = data["frame_index"]; + var frame_length = data["frame_length"]; + var height = data["height"]; + var width = data["width"]; + var imageData = data["imageData"]; + var delay = data["delay"]; + var neuquant = data["neuquant"]; + var colortab = data["colortab"]; + + // Create a new GIFEncoder for every new worker + var encoder = new GIFEncoder(); + encoder.setRepeat(0); // loop forever + encoder.setQuality(1); + encoder.setSize(width, height); + encoder.setDelay(delay); + + if (frame_index == 0) { + encoder.start(); + } + else { + encoder.cont(); + encoder.setProperties(true, false); //started, firstFrame + } + + // Load the neural net here because the color table gets clobbered by encoder.start(); + encoder.setNeuquant(neuquant, colortab); + encoder.addFrame(imageData, true); + + if(frame_length == frame_index) { + encoder.finish(); + } + + self.postMessage({ + task: 'encode', + frame_index: frame_index, + frame_data: encoder.stream().getData() + }); + // on the page, search for the GIF89a to see the frame_index +}; + diff --git a/js/record.js b/js/record.js new file mode 100644 index 0000000..fe8d0a1 --- /dev/null +++ b/js/record.js @@ -0,0 +1,162 @@ +(function(){ + var canvases = document.getElementsByTagName("canvas") + if (canvases.length == 0) { alert("no canvas found"); return; } + + var source = canvases[0] + + var encoder = new GifEncoder() + encoder.on("encoded-frame", encoded_frame) + encoder.on("rendered", rendered_bytes) + encoder.on("rendered-url", rendered_url) + + var w, h, x, y; + var last_t, frame_t, count, delay, done; + var frames = [] + var curtain, outline + var dragging = false + var lastGif + + init() + function init(){ + document.body.style.width = "100%" + document.body.style.height = "100%" + document.body.parentNode.style.width = "100%" + document.body.parentNode.style.height = "100%" + var template = document.getElementById("template").innerHTML + var el = document.createElement("div") + el.innerHTML = template + document.body.appendChild(el) + bind() + } + function bind(){ + curtain = document.getElementById("curtain") + outline = document.getElementById("outline") + controls = document.getElementById("outline") + document.getElementById("record").addEventListener("click", record, false) + document.getElementById("save").addEventListener("click", save, false) + curtain.addEventListener("mousedown", box_start, false) + curtain.addEventListener("mousemove", box_size, false) + curtain.addEventListener("mouseup", box_end, false) + outline.style.display = "none" + controls.style.display = "none" + } + function box_start(e){ + x = e.pageX + y = e.pageY + w = 1 + h = 1 + dragging = true + outline.style.left = px(x-1) + outline.style.top = px(y-1) + outline.style.width = px(w) + outline.style.height = px(h) + outline.style.display = "block" + } + function box_size(e){ + if (! dragging) return + w = e.pageX - x + h = e.pageY - y + outline.style.width = px(w) + outline.style.height = px(h) + } + function box_end(e){ + dragging = false + controls.style.display = "block" + enable("record") + document.getElementById("record").focus() + } + function enable(id){ document.getElementById(id).removeAttribute("disabled") } + function disable(id){ document.getElementById(id).setAttribute("disabled","disabled") } + function px(n){ return n + "px" } + function record(){ + count = parseInt(document.getElementById("framecount").value) + delay = parseFloat(document.getElementById("framedelay").value) * 1000 + done = 0 + frame_t = 0 + build() + capture() + last_t = +new Date() + requestAnimationFrame(recordloop) + status("recording") + disable("record") + } + function recordloop(){ + var canvas = document.createElement("canvas") + var t = +new Date() + frame_t += t - last_t + last_t = t + if (frame_t > delay) { + frame_t -= delay + capture() + } + if (done == count) { + render() + } + else { + requestAnimationFrame(recordloop) + } + } + function build(){ + frames = new Array(count) + for (var i = 0; i < count; i++){ + frames[i] = document.createElement("canvas") + frames[i].height = h + frames[i].width = w + } + } + function capture(){ + var frame = frames[done++] + var ctx = frame.getContext('2d') + ctx.fillStyle = document.body.backgroundColor + ctx.fillRect(0,0,w,h) + ctx.drawImage(source, x, y, w, h, 0, 0, w, h) + } + function render(){ + encoder.reset() + encoder.addFrames(frames, delay) + status("encoding") + try { + encoder.encode() + } + catch (e) { + rendering = false + status(e) + throw e + } + } + function status(s){ + document.getElementById("status").innerHTML = s + } + function encoded_frame(done,count){ + status("encoded " + done + " / " + count) + } + function rendered_bytes(bytes){ + status(filesize(bytes.length)) + } + function rendered_url(url){ + var image = new Image () + lastGif = image.src = url + document.getElementById("preview").innerHTML = "" + document.getElementById("preview").appendChild(image) + rendering = false + enable("record") + enable("save") + } + function save (){ + if (! lastGif) return; + var filename = (window.location.host + window.location.pathname).replace(/[^a-zA-Z0-9]/g,"-").replace(/-+/,"-") + var blob = dataUriToBlob(lastGif) + saveAs(blob, filename + "-" + (+new Date()) + ".gif"); + } + function filesize(n) { + if (n < 1e3) return n + " bytes" + if (n < 1e6) return decimalString(n/1e3) + " kb" + if (n < 1e9) return decimalString(n/1e6) + " mb" + return "WAY TOO BIG DUDE" + } + function decimalString(n){ + var m = Math.floor(n); + return m + "." + Math.round((n-m)*10) + } +})() + diff --git a/js/vendor/FileSaver/.bower.json b/js/vendor/FileSaver/.bower.json new file mode 100644 index 0000000..586a935 --- /dev/null +++ b/js/vendor/FileSaver/.bower.json @@ -0,0 +1,15 @@ +{ + "name": "FileSaver", + "main": "./FileSaver.js", + "dependencies": {}, + "homepage": "https://github.com/eligrey/FileSaver.js", + "_release": "1f4b2f1724", + "_resolution": { + "type": "branch", + "branch": "master", + "commit": "1f4b2f1724b19ddaf5eae3d1523f7a8ae9cbf812" + }, + "_source": "git://github.com/eligrey/FileSaver.js.git", + "_target": "*", + "_originalSource": "FileSaver" +}
\ No newline at end of file diff --git a/js/vendor/FileSaver/FileSaver.js b/js/vendor/FileSaver/FileSaver.js new file mode 100644 index 0000000..378a9dc --- /dev/null +++ b/js/vendor/FileSaver/FileSaver.js @@ -0,0 +1,232 @@ +/* FileSaver.js + * A saveAs() FileSaver implementation. + * 2013-10-21 + * + * By Eli Grey, http://eligrey.com + * License: X11/MIT + * See LICENSE.md + */ + +/*global self */ +/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true, + plusplus: true */ + +/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */ + +var saveAs = saveAs + || (typeof navigator !== 'undefined' && navigator.msSaveOrOpenBlob && navigator.msSaveOrOpenBlob.bind(navigator)) + || (function(view) { + "use strict"; + var + doc = view.document + // only get URL when necessary in case BlobBuilder.js hasn't overridden it yet + , get_URL = function() { + return view.URL || view.webkitURL || view; + } + , URL = view.URL || view.webkitURL || view + , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a") + , can_use_save_link = !view.externalHost && "download" in save_link + , click = function(node) { + var event = doc.createEvent("MouseEvents"); + event.initMouseEvent( + "click", true, false, view, 0, 0, 0, 0, 0 + , false, false, false, false, 0, null + ); + node.dispatchEvent(event); + } + , webkit_req_fs = view.webkitRequestFileSystem + , req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem + , throw_outside = function (ex) { + (view.setImmediate || view.setTimeout)(function() { + throw ex; + }, 0); + } + , force_saveable_type = "application/octet-stream" + , fs_min_size = 0 + , deletion_queue = [] + , process_deletion_queue = function() { + var i = deletion_queue.length; + while (i--) { + var file = deletion_queue[i]; + if (typeof file === "string") { // file is an object URL + URL.revokeObjectURL(file); + } else { // file is a File + file.remove(); + } + } + deletion_queue.length = 0; // clear queue + } + , dispatch = function(filesaver, event_types, event) { + event_types = [].concat(event_types); + var i = event_types.length; + while (i--) { + var listener = filesaver["on" + event_types[i]]; + if (typeof listener === "function") { + try { + listener.call(filesaver, event || filesaver); + } catch (ex) { + throw_outside(ex); + } + } + } + } + , FileSaver = function(blob, name) { + // First try a.download, then web filesystem, then object URLs + var + filesaver = this + , type = blob.type + , blob_changed = false + , object_url + , target_view + , get_object_url = function() { + var object_url = get_URL().createObjectURL(blob); + deletion_queue.push(object_url); + return object_url; + } + , dispatch_all = function() { + dispatch(filesaver, "writestart progress write writeend".split(" ")); + } + // on any filesys errors revert to saving with object URLs + , fs_error = function() { + // don't create more object URLs than needed + if (blob_changed || !object_url) { + object_url = get_object_url(blob); + } + if (target_view) { + target_view.location.href = object_url; + } else { + window.open(object_url, "_blank"); + } + filesaver.readyState = filesaver.DONE; + dispatch_all(); + } + , abortable = function(func) { + return function() { + if (filesaver.readyState !== filesaver.DONE) { + return func.apply(this, arguments); + } + }; + } + , create_if_not_found = {create: true, exclusive: false} + , slice + ; + filesaver.readyState = filesaver.INIT; + if (!name) { + name = "download"; + } + if (can_use_save_link) { + object_url = get_object_url(blob); + // FF for Android has a nasty garbage collection mechanism + // that turns all objects that are not pure javascript into 'deadObject' + // this means `doc` and `save_link` are unusable and need to be recreated + // `view` is usable though: + doc = view.document; + save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a"); + save_link.href = object_url; + save_link.download = name; + var event = doc.createEvent("MouseEvents"); + event.initMouseEvent( + "click", true, false, view, 0, 0, 0, 0, 0 + , false, false, false, false, 0, null + ); + save_link.dispatchEvent(event); + filesaver.readyState = filesaver.DONE; + dispatch_all(); + return; + } + // Object and web filesystem URLs have a problem saving in Google Chrome when + // viewed in a tab, so I force save with application/octet-stream + // http://code.google.com/p/chromium/issues/detail?id=91158 + if (view.chrome && type && type !== force_saveable_type) { + slice = blob.slice || blob.webkitSlice; + blob = slice.call(blob, 0, blob.size, force_saveable_type); + blob_changed = true; + } + // Since I can't be sure that the guessed media type will trigger a download + // in WebKit, I append .download to the filename. + // https://bugs.webkit.org/show_bug.cgi?id=65440 + if (webkit_req_fs && name !== "download") { + name += ".download"; + } + if (type === force_saveable_type || webkit_req_fs) { + target_view = view; + } + if (!req_fs) { + fs_error(); + return; + } + fs_min_size += blob.size; + req_fs(view.TEMPORARY, fs_min_size, abortable(function(fs) { + fs.root.getDirectory("saved", create_if_not_found, abortable(function(dir) { + var save = function() { + dir.getFile(name, create_if_not_found, abortable(function(file) { + file.createWriter(abortable(function(writer) { + writer.onwriteend = function(event) { + target_view.location.href = file.toURL(); + deletion_queue.push(file); + filesaver.readyState = filesaver.DONE; + dispatch(filesaver, "writeend", event); + }; + writer.onerror = function() { + var error = writer.error; + if (error.code !== error.ABORT_ERR) { + fs_error(); + } + }; + "writestart progress write abort".split(" ").forEach(function(event) { + writer["on" + event] = filesaver["on" + event]; + }); + writer.write(blob); + filesaver.abort = function() { + writer.abort(); + filesaver.readyState = filesaver.DONE; + }; + filesaver.readyState = filesaver.WRITING; + }), fs_error); + }), fs_error); + }; + dir.getFile(name, {create: false}, abortable(function(file) { + // delete file if it already exists + file.remove(); + save(); + }), abortable(function(ex) { + if (ex.code === ex.NOT_FOUND_ERR) { + save(); + } else { + fs_error(); + } + })); + }), fs_error); + }), fs_error); + } + , FS_proto = FileSaver.prototype + , saveAs = function(blob, name) { + return new FileSaver(blob, name); + } + ; + FS_proto.abort = function() { + var filesaver = this; + filesaver.readyState = filesaver.DONE; + dispatch(filesaver, "abort"); + }; + FS_proto.readyState = FS_proto.INIT = 0; + FS_proto.WRITING = 1; + FS_proto.DONE = 2; + + FS_proto.error = + FS_proto.onwritestart = + FS_proto.onprogress = + FS_proto.onwrite = + FS_proto.onabort = + FS_proto.onerror = + FS_proto.onwriteend = + null; + + view.addEventListener("unload", process_deletion_queue, false); + return saveAs; +}(this.self || this.window || this.content)); +// `self` is undefined in Firefox for Android content script context +// while `this` is nsIContentFrameMessageManager +// with an attribute `content` that corresponds to the window + +if (typeof module !== 'undefined') module.exports = saveAs; diff --git a/js/vendor/FileSaver/LICENSE.md b/js/vendor/FileSaver/LICENSE.md new file mode 100644 index 0000000..7eb56b9 --- /dev/null +++ b/js/vendor/FileSaver/LICENSE.md @@ -0,0 +1,30 @@ +This software is licensed under the MIT/X11 license. + +MIT/X11 license +--------------- + +Copyright © 2011 [Eli Grey][1]. + +Permission is hereby granted, free of charge, to any person +obtaining a copy of this software and associated documentation +files (the "Software"), to deal in the Software without +restriction, including without limitation the rights to use, +copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the +Software is furnished to do so, subject to the following +conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES +OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT +HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + + + [1]: http://eligrey.com
\ No newline at end of file diff --git a/js/vendor/FileSaver/README.md b/js/vendor/FileSaver/README.md new file mode 100644 index 0000000..49aff62 --- /dev/null +++ b/js/vendor/FileSaver/README.md @@ -0,0 +1,78 @@ +FileSaver.js +============ + +FileSaver.js implements the HTML5 W3C `saveAs()` [FileSaver][1] interface in browsers that do +not natively support it. There is a [FileSaver.js demo][2] that demonstrates saving +various media types. + +FileSaver.js is the solution to saving files on the client-side, and is perfect for +webapps that need to generate files, or for saving sensitive information that shouldn't be +sent to an external server. + +Looking for `canvas.toBlob()` for saving canvases? Check out +[canvas-toBlob.js](https://github.com/eligrey/canvas-toBlob.js) for a cross-browser implementation. + +Supported Browsers +------------------ + +| Browser | Constructs as | Filenames | Max Blob Size | Dependencies | +| -------------- | ------------- | ------------ | ------------- | ------------ | +| Firefox 20+ | Blob | Yes | 800MiB | None | +| Firefox ≤ 19 | data: URI | No | n/a | [Blob.js](https://github.com/eligrey/Blob.js) | +| Chrome | Blob | Yes | 345MiB | None | +| Chrome for Android | Blob | Yes | ? | None | +| IE 10+ | Blob | Yes | 600MiB | None | +| Opera Next | Blob | Yes | ? | None | +| Opera < 15 | data: URI | No | n/a | [Blob.js](https://github.com/eligrey/Blob.js) | +| Safari 6.1+ | Blob | No | ? | None | +| Safari < 6 | data: URI | No | n/a | [Blob.js](https://github.com/eligrey/Blob.js) | + +Feature detection is possible: + + try { var isFileSaverSupported = !!new Blob(); } catch(e){} + +Syntax +------ + + FileSaver saveAs(in Blob data, in DOMString filename) + +Examples +-------- + +### Saving text + + var blob = new Blob(["Hello, world!"], {type: "text/plain;charset=utf-8"}); + saveAs(blob, "hello world.txt"); + +The standard W3C File API [`Blob`][3] interface is not available in all browsers. +[Blob.js][4] is a cross-browser `Blob` implementation that solves this. + +### Saving a canvas + + var canvas = document.getElementById("my-canvas"), ctx = canvas.getContext("2d"); + // draw to canvas... + canvas.toBlob(function(blob) { + saveAs(blob, "pretty image.png"); + }); + +Note: The standard HTML5 `canvas.toBlob()` method is not available in all browsers. +[canvas-toBlob.js][5] is a cross-browser `canvas.toBlob()` that polyfills this. + +### Aborting a save + + var filesaver = saveAs(blob, "whatever"); + cancel_button.addEventListener("click", function() { + if (filesaver.abort) { + filesaver.abort(); + } + }, false); + +This isn't that useful unless you're saving very large files (e.g. generated video). + + + + [1]: http://www.w3.org/TR/file-writer-api/#the-filesaver-interface + [2]: http://eligrey.com/demos/FileSaver.js/ + [3]: https://developer.mozilla.org/en-US/docs/DOM/Blob + [4]: https://github.com/eligrey/Blob.js + [5]: https://github.com/eligrey/canvas-toBlob.js diff --git a/js/vendor/FileSaver/bower.json b/js/vendor/FileSaver/bower.json new file mode 100644 index 0000000..0e0d7e0 --- /dev/null +++ b/js/vendor/FileSaver/bower.json @@ -0,0 +1,7 @@ +{ + "name": "FileSaver", + "version": "1.0.0", + "main": "./FileSaver.js", + "dependencies": { + } +} diff --git a/js/vendor/FileSaver/demo/demo.css b/js/vendor/FileSaver/demo/demo.css new file mode 100644 index 0000000..fe03ca5 --- /dev/null +++ b/js/vendor/FileSaver/demo/demo.css @@ -0,0 +1,55 @@ +html {
+ background-color: #DDD;
+}
+body {
+ width: 900px;
+ margin: 0 auto;
+ font-family: Verdana, Helvetica, Arial, sans-serif;
+ box-shadow: 0 0 5px #000;
+ box-shadow: 0 0 10px 2px rgba(0, 0, 0, .5);
+ padding: 7px 25px 70px;
+ background-color: #FFF;
+}
+h1, h2, h3, h4, h5, h6 {
+ font-family: Georgia, "Times New Roman", serif;
+}
+h2, form {
+ text-align: center;
+}
+form {
+ margin-top: 5px;
+}
+.input {
+ width: 500px;
+ height: 300px;
+ margin: 0 auto;
+ display: block;
+}
+section {
+ margin-top: 40px;
+}
+dt {
+ font-weight: bold;
+ font-size: larger;
+}
+#canvas {
+ cursor: crosshair;
+}
+#canvas, #html {
+ border: 1px solid black;
+}
+.filename {
+ text-align: right;
+}
+#html {
+ box-sizing: border-box;
+ ms-box-sizing: border-box;
+ webkit-box-sizing: border-box;
+ moz-box-sizing: border-box;
+ overflow: auto;
+ padding: 1em;
+}
+dt:target {
+ background-color: Highlight;
+ color: HighlightText;
+}
diff --git a/js/vendor/FileSaver/demo/demo.js b/js/vendor/FileSaver/demo/demo.js new file mode 100644 index 0000000..e08497b --- /dev/null +++ b/js/vendor/FileSaver/demo/demo.js @@ -0,0 +1,213 @@ +/* FileSaver.js demo script + * 2012-01-23 + * + * By Eli Grey, http://eligrey.com + * License: X11/MIT + * See LICENSE.md + */ + +/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/demo/demo.js */ + +(function(view) { +"use strict"; +// The canvas drawing portion of the demo is based off the demo at +// http://www.williammalone.com/articles/create-html5-canvas-javascript-drawing-app/ +var + document = view.document + , $ = function(id) { + return document.getElementById(id); + } + , session = view.sessionStorage + // only get URL when necessary in case Blob.js hasn't defined it yet + , get_blob = function() { + return view.Blob; + } + + , canvas = $("canvas") + , canvas_options_form = $("canvas-options") + , canvas_filename = $("canvas-filename") + , canvas_clear_button = $("canvas-clear") + + , text = $("text") + , text_options_form = $("text-options") + , text_filename = $("text-filename") + + , html = $("html") + , html_options_form = $("html-options") + , html_filename = $("html-filename") + + , ctx = canvas.getContext("2d") + , drawing = false + , x_points = session.x_points || [] + , y_points = session.y_points || [] + , drag_points = session.drag_points || [] + , add_point = function(x, y, dragging) { + x_points.push(x); + y_points.push(y); + drag_points.push(dragging); + } + , draw = function(){ + canvas.width = canvas.width; + ctx.lineWidth = 6; + ctx.lineJoin = "round"; + ctx.strokeStyle = "#000000"; + var + i = 0 + , len = x_points.length + ; + for(; i < len; i++) { + ctx.beginPath(); + if (i && drag_points[i]) { + ctx.moveTo(x_points[i-1], y_points[i-1]); + } else { + ctx.moveTo(x_points[i]-1, y_points[i]); + } + ctx.lineTo(x_points[i], y_points[i]); + ctx.closePath(); + ctx.stroke(); + } + } + , stop_drawing = function() { + drawing = false; + } + + // Title guesser and document creator available at https://gist.github.com/1059648 + , guess_title = function(doc) { + var + h = "h6 h5 h4 h3 h2 h1".split(" ") + , i = h.length + , headers + , header_text + ; + while (i--) { + headers = doc.getElementsByTagName(h[i]); + for (var j = 0, len = headers.length; j < len; j++) { + header_text = headers[j].textContent.trim(); + if (header_text) { + return header_text; + } + } + } + } + , doc_impl = document.implementation + , create_html_doc = function(html) { + var + dt = doc_impl.createDocumentType('html', null, null) + , doc = doc_impl.createDocument("http://www.w3.org/1999/xhtml", "html", dt) + , doc_el = doc.documentElement + , head = doc_el.appendChild(doc.createElement("head")) + , charset_meta = head.appendChild(doc.createElement("meta")) + , title = head.appendChild(doc.createElement("title")) + , body = doc_el.appendChild(doc.createElement("body")) + , i = 0 + , len = html.childNodes.length + ; + charset_meta.setAttribute("charset", html.ownerDocument.characterSet); + for (; i < len; i++) { + body.appendChild(doc.importNode(html.childNodes.item(i), true)); + } + var title_text = guess_title(doc); + if (title_text) { + title.appendChild(doc.createTextNode(title_text)); + } + return doc; + } +; +canvas.width = 500; +canvas.height = 300; + + if (typeof x_points === "string") { + x_points = JSON.parse(x_points); +} if (typeof y_points === "string") { + y_points = JSON.parse(y_points); +} if (typeof drag_points === "string") { + drag_points = JSON.parse(drag_points); +} if (session.canvas_filename) { + canvas_filename.value = session.canvas_filename; +} if (session.text) { + text.value = session.text; +} if (session.text_filename) { + text_filename.value = session.text_filename; +} if (session.html) { + html.innerHTML = session.html; +} if (session.html_filename) { + html_filename.value = session.html_filename; +} + +drawing = true; +draw(); +drawing = false; + +canvas_clear_button.addEventListener("click", function() { + canvas.width = canvas.width; + x_points.length = + y_points.length = + drag_points.length = + 0; +}, false); +canvas.addEventListener("mousedown", function(event) { + event.preventDefault(); + drawing = true; + add_point(event.pageX - canvas.offsetLeft, event.pageY - canvas.offsetTop, false); + draw(); +}, false); +canvas.addEventListener("mousemove", function(event) { + if (drawing) { + add_point(event.pageX - canvas.offsetLeft, event.pageY - canvas.offsetTop, true); + draw(); + } +}, false); +canvas.addEventListener("mouseup", stop_drawing, false); +canvas.addEventListener("mouseout", stop_drawing, false); + +canvas_options_form.addEventListener("submit", function(event) { + event.preventDefault(); + canvas.toBlob(function(blob) { + saveAs( + blob + , (canvas_filename.value || canvas_filename.placeholder) + ".png" + ); + }, "image/png"); +}, false); + +text_options_form.addEventListener("submit", function(event) { + event.preventDefault(); + var BB = get_blob(); + saveAs( + new BB( + [text.value || text.placeholder] + , {type: "text/plain;charset=" + document.characterSet} + ) + , (text_filename.value || text_filename.placeholder) + ".txt" + ); +}, false); + +html_options_form.addEventListener("submit", function(event) { + event.preventDefault(); + var + BB = get_blob() + , xml_serializer = new XMLSerializer + , doc = create_html_doc(html) + ; + saveAs( + new BB( + [xml_serializer.serializeToString(doc)] + , {type: "application/xhtml+xml;charset=" + document.characterSet} + ) + , (html_filename.value || html_filename.placeholder) + ".xhtml" + ); +}, false); + +view.addEventListener("unload", function() { + session.x_points = JSON.stringify(x_points); + session.y_points = JSON.stringify(y_points); + session.drag_points = JSON.stringify(drag_points); + session.canvas_filename = canvas_filename.value; + + session.text = text.value; + session.text_filename = text_filename.value; + + session.html = html.innerHTML; + session.html_filename = html_filename.value; +}, false); +}(self)); diff --git a/js/vendor/FileSaver/demo/demo.min.js b/js/vendor/FileSaver/demo/demo.min.js new file mode 100644 index 0000000..77f9ed1 --- /dev/null +++ b/js/vendor/FileSaver/demo/demo.min.js @@ -0,0 +1,2 @@ +/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/demo/demo.js */ +(function(n){"use strict";var s=n.document,g=function(A){return s.getElementById(A)},b=n.sessionStorage,x=function(){return n.Blob},f=g("canvas"),r=g("canvas-options"),y=g("canvas-filename"),p=g("canvas-clear"),q=g("text"),t=g("text-options"),h=g("text-filename"),m=g("html"),e=g("html-options"),i=g("html-filename"),u=f.getContext("2d"),z=false,a=b.x_points||[],o=b.y_points||[],d=b.drag_points||[],j=function(A,C,B){a.push(A);o.push(C);d.push(B)},l=function(){f.width=f.width;u.lineWidth=6;u.lineJoin="round";u.strokeStyle="#000000";var B=0,A=a.length;for(;B<A;B++){u.beginPath();if(B&&d[B]){u.moveTo(a[B-1],o[B-1])}else{u.moveTo(a[B]-1,o[B])}u.lineTo(a[B],o[B]);u.closePath();u.stroke()}},c=function(){z=false},w=function(E){var D="h6 h5 h4 h3 h2 h1".split(" "),C=D.length,F,G;while(C--){F=E.getElementsByTagName(D[C]);for(var B=0,A=F.length;B<A;B++){G=F[B].textContent.trim();if(G){return G}}}},v=s.implementation,k=function(D){var B=v.createDocumentType("html",null,null),J=v.createDocument("http://www.w3.org/1999/xhtml","html",B),A=J.documentElement,H=A.appendChild(J.createElement("head")),K=H.appendChild(J.createElement("meta")),I=H.appendChild(J.createElement("title")),E=A.appendChild(J.createElement("body")),C=0,G=D.childNodes.length;K.setAttribute("charset",D.ownerDocument.characterSet);for(;C<G;C++){E.appendChild(J.importNode(D.childNodes.item(C),true))}var F=w(J);if(F){I.appendChild(J.createTextNode(F))}return J};f.width=500;f.height=300;if(typeof a==="string"){a=JSON.parse(a)}if(typeof o==="string"){o=JSON.parse(o)}if(typeof d==="string"){d=JSON.parse(d)}if(b.canvas_filename){y.value=b.canvas_filename}if(b.text){q.value=b.text}if(b.text_filename){h.value=b.text_filename}if(b.html){m.innerHTML=b.html}if(b.html_filename){i.value=b.html_filename}z=true;l();z=false;p.addEventListener("click",function(){f.width=f.width;a.length=o.length=d.length=0},false);f.addEventListener("mousedown",function(A){A.preventDefault();z=true;j(A.pageX-f.offsetLeft,A.pageY-f.offsetTop,false);l()},false);f.addEventListener("mousemove",function(A){if(z){j(A.pageX-f.offsetLeft,A.pageY-f.offsetTop,true);l()}},false);f.addEventListener("mouseup",c,false);f.addEventListener("mouseout",c,false);r.addEventListener("submit",function(A){A.preventDefault();f.toBlob(function(B){saveAs(B,(y.value||y.placeholder)+".png")},"image/png")},false);t.addEventListener("submit",function(A){A.preventDefault();var B=x();saveAs(new B([q.value||q.placeholder],{type:"text/plain;charset="+s.characterSet}),(h.value||h.placeholder)+".txt")},false);e.addEventListener("submit",function(B){B.preventDefault();var D=x(),A=new XMLSerializer,C=k(m);saveAs(new D([A.serializeToString(C)],{type:"application/xhtml+xml;charset="+s.characterSet}),(i.value||i.placeholder)+".xhtml")},false);n.addEventListener("unload",function(){b.x_points=JSON.stringify(a);b.y_points=JSON.stringify(o);b.drag_points=JSON.stringify(d);b.canvas_filename=y.value;b.text=q.value;b.text_filename=h.value;b.html=m.innerHTML;b.html_filename=i.value},false)}(self));
\ No newline at end of file diff --git a/js/vendor/FileSaver/demo/index.xhtml b/js/vendor/FileSaver/demo/index.xhtml new file mode 100644 index 0000000..abc8813 --- /dev/null +++ b/js/vendor/FileSaver/demo/index.xhtml @@ -0,0 +1,57 @@ +<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="en-US-x-Hixie">
+<head>
+<meta charset="utf-8"/>
+<title>FileSaver.js demo</title>
+<link rel="stylesheet" type="text/css" href="demo.css"/>
+</head>
+<body>
+<h1><a href="https://github.com/eligrey/FileSaver.js">FileSaver.js</a> demo</h1>
+<p>
+The following examples demonstrate how it is possible to generate and save any type of data right in the browser using the W3C <code>saveAs()</code> <a href="http://www.w3.org/TR/file-writer-api/#the-filesaver-interface">FileSaver</a> interface, without contacting any servers.
+</p>
+<section id="image-demo">
+ <h2>Saving an image</h2>
+ <canvas class="input" id="canvas" width="500" height="300"/>
+ <form id="canvas-options">
+ <label>Filename: <input type="text" class="filename" id="canvas-filename" placeholder="doodle"/>.png</label>
+ <input type="submit" value="Save"/>
+ <input type="button" id="canvas-clear" value="Clear"/>
+ </form>
+</section>
+<section id="text-demo">
+ <h2>Saving text</h2>
+ <textarea class="input" id="text" placeholder="Once upon a time..."/>
+ <form id="text-options">
+ <label>Filename: <input type="text" class="filename" id="text-filename" placeholder="a plain document"/>.txt</label>
+ <input type="submit" value="Save"/>
+ </form>
+</section>
+<section id="html-demo">
+ <h2>Saving rich text</h2>
+ <div class="input" id="html" contenteditable="">
+ <h3>Some example rich text</h3>
+ <ul>
+ <li><del>Plain</del> <ins>Boring</ins> text.</li>
+ <li><em>Emphasized text!</em></li>
+ <li><strong>Strong text!</strong></li>
+ <li>
+ <svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="70" height="70">
+ <circle cx="35" cy="35" r="35" fill="red"/>
+ <text x="10" y="40">image</text>
+ </svg>
+ </li>
+ <li><a href="https://github.com/eligrey/FileSaver.js">A link.</a></li>
+ </ul>
+ </div>
+ <form id="html-options">
+ <label>Filename: <input type="text" class="filename" id="html-filename" placeholder="a rich document"/>.xhtml</label>
+ <input type="submit" value="Save"/>
+ </form>
+</section>
+<script type="application/ecmascript" async="" src="https://raw.github.com/eligrey/Blob.js/master/Blob.min.js"/>
+<script type="application/ecmascript" async="" src="https://raw.github.com/eligrey/canvas-toBlob.js/master/canvas-toBlob.js"/>
+<script type="application/ecmascript" async="" src="https://raw.github.com/eligrey/FileSaver.js/master/FileSaver.js"/>
+<script type="application/ecmascript" async="" src="https://raw.github.com/eligrey/FileSaver.js/master/demo/demo.js"/>
+</body>
+</html>
diff --git a/js/vendor/FileSaver/package.json b/js/vendor/FileSaver/package.json new file mode 100644 index 0000000..3ddf184 --- /dev/null +++ b/js/vendor/FileSaver/package.json @@ -0,0 +1,23 @@ +{ + "name": "filesaver.js", + "version": "2013.1.23", + "description": "A saveAs() FileSaver implementation", + "main": "FileSaver.js", + "scripts": { + "test": "echo \"Error: no test specified\" && exit 1" + }, + "repository": { + "type": "git", + "url": "https://github.com/eligrey/FileSaver.js.git" + }, + "keywords": [ + "filesaver", + "saveas", + "blob" + ], + "author": "Eli Grey", + "license": "MIT/X11", + "bugs": { + "url": "https://github.com/eligrey/FileSaver.js/issues" + } +} diff --git a/js/vendor/dataUriToBlob.js b/js/vendor/dataUriToBlob.js new file mode 100644 index 0000000..582aecb --- /dev/null +++ b/js/vendor/dataUriToBlob.js @@ -0,0 +1,47 @@ +window.dataUriToBlob = (function(){ +/** + * Blob constructor. + */ + +var Blob = window.Blob; + +/** + * ArrayBufferView support. + */ + +var hasArrayBufferView = new Blob([new Uint8Array(100)]).size == 100; + +/** + * Return a `Blob` for the given data `uri`. + * + * @param {String} uri + * @return {Blob} + * @api public + */ + +var dataUriToBlob = function(uri){ + var data = uri.split(',')[1]; + var bytes = atob(data); + var buf = new ArrayBuffer(bytes.length); + var arr = new Uint8Array(buf); + for (var i = 0; i < bytes.length; i++) { + arr[i] = bytes.charCodeAt(i); + } + + if (!hasArrayBufferView) arr = buf; + var blob = new Blob([arr], { type: mime(uri) }); + blob.slice = blob.slice || blob.webkitSlice; + return blob; +}; + +/** + * Return data uri mime type. + */ + +function mime(uri) { + return uri.split(';')[0].slice(5); +} + +return dataUriToBlob; + +})() diff --git a/noisia.html b/noisia.html new file mode 100644 index 0000000..146ac08 --- /dev/null +++ b/noisia.html @@ -0,0 +1,350 @@ +<!DOCTYPE html>
+<html> +<head>
+<meta charset=utf-8 />
+<title>JS Bin</title>
+ +<style id="jsbin-css"> +body, canvas{
+ margin: 0;
+ padding: 0;
+ border: 0;
+ position: fixed;
+ cursor:none;
+ background: hsla(0,9%,11%,1);
+} +</style> +</head>
+<body>
+ <canvas id='canvas'></canvas>
+<script> +var Mouse, PI, animloop, canvas, cos, ctx, decay, degToRad, distance, hypotenuse, now, pegs, radToDeg, rotateTo, sin, start; + +Mouse = { + x: window.innerWidth / 2, + y: window.innerHeight / 2, + down: false, + events: { + move: function(e) { + e.preventDefault(); + if ('touches' in e) { + e = e.touches[0]; + } + Mouse.x = (Mouse.x + e.pageX) * 0.5; + return Mouse.y = (Mouse.y + e.pageY) * 0.5; + }, + down: function(e) { + e.preventDefault(); + return Mouse.down = !Mouse.down; + }, + up: function() { + return Mouse.down = !Mouse.down; + } + } +}; + +window.addEventListener('mousemove', Mouse.events.move, false); +window.addEventListener('mousedown', Mouse.events.down, false); +window.addEventListener('mouseup', Mouse.events.up, false); +window.addEventListener('touchmove', Mouse.events.move, false); +window.addEventListener('touchstart', Mouse.events.move, false); +window.addEventListener('touchstart', Mouse.events.down, false); +window.addEventListener('touchend', Mouse.events.up, false); + +start = Date.now(); + +now = 0; + +PI = Math.PI; + +sin = function(a) { + return Math.sin(a); +}; + +cos = function(a) { + return Math.cos(a); +}; + +hypotenuse = function(a, b) { + if (a == null) { + a = 0; + } + if (b == null) { + b = 0; + } + return Math.sqrt(a * a + b * b); +}; + +distance = function(x1, y1, x2, y2) { + return hypotenuse(x2 - x1, y2 - y1); +}; + +radToDeg = function(rad) { + return rad / (Math.PI / 180); +}; + +degToRad = function(deg) { + return deg * (Math.PI / 180); +}; + +rotateTo = function(rise, run) { + var rotation, slope, tangent; + + if (rise == null) { + rise = 0; + } + if (run == null) { + run = 0; + } + if (run === 0) { + run = 1; + } + slope = rise / run; + tangent = radToDeg(Math.atan(slope)); + if (run < 0) { + rotation = degToRad(tangent - 180); + } else { + rotation = degToRad(tangent); + } + return rotation; +}; + +canvas = document.getElementById('canvas'); + +ctx = canvas.getContext('2d'); + +(canvas.sizeToWindow = function() { + canvas.width = window.innerWidth; + canvas.height = window.innerHeight; + return canvas.hyp = hypotenuse(canvas.width, canvas.height); +})(); + +window.addEventListener('resize', canvas.sizeToWindow, false); + +pegs = function() { + var clockwise, dist, endAngle, i, interval, j, radius, rot, startAngle, xo, yo, _i, _j, _ref, _ref1; + + interval = hypotenuse(canvas.height, canvas.width) / 31; + radius = interval / 2 - 1; + ctx.lineWidth = 1; + ctx.lineCap = 'round'; + ctx.strokeStyle = 'black'; + ctx.fillStyle = "hsla(0,60%,60%,1)"; + for (i = _i = -interval, _ref = canvas.width + interval; interval > 0 ? _i < _ref : _i > _ref; i = _i += interval) { + for (j = _j = -interval, _ref1 = canvas.height + interval; interval > 0 ? _j < _ref1 : _j > _ref1; j = _j += interval) { + rot = now / 111 + rotateTo(Mouse.x - i, j - Mouse.y); + dist = distance(i, j, Mouse.x, Mouse.y); + xo = sin(j / canvas.height * PI * 22 + now / 55) * radius / 4; + yo = cos(i / canvas.width * PI * 22 + now / 77) * radius / 4; + ctx.beginPath(); + startAngle = rot + sin(dist / canvas.hyp * PI * (cos(now / 444) * 4) + now / 99 * PI); + endAngle = (rot + 0.1) + sin(dist / canvas.hyp * PI * (cos(now / 333) * 4) - now / 111) * PI / 6; + clockwise = startAngle > endAngle ? true : false; + ctx.arc(i + xo, j + yo, radius, startAngle, endAngle, clockwise); + ctx.closePath(); + ctx.fillStyle = "hsla(" + ((endAngle - startAngle) / PI * 90 + 240 - now / 3 % 360) + ",100%,50%,1)"; + ctx.fill(); + } + } + return true; +}; + +decay = function(context, x, y, w, h, r) { + context.save(); + context.translate(context.canvas.width / 2 + x - w / 2, context.canvas.height / 2 + y - h / 2); + context.rotate(r); + context.drawImage(context.canvas, -context.canvas.width / 2, -context.canvas.height / 2, context.canvas.width + w, context.canvas.height + h); + return context.restore(); +}; + +(animloop = function() { + animloop.id = requestAnimationFrame(animloop); + now = (Date.now() - start) / 32; + ctx.fillStyle = 'hsla(0,0%,0%,0.1)'; + ctx.fillRect(0, 0, canvas.width, canvas.height); + return pegs(); +})(); +</script> +<script type="text/html" id="template"> +<div id="curtain" style="opacity:0;width:100%;height:100%;margin:0;padding:0;position:absolute;top:0;left:0;background:rgba(255,255,255,0.1);"></div> +<div id="outline" style="border:1px solid white;background:rgba(0,255,255,0.5);opacity:0.5; position: absolute;pointer-events:none"></div> +<div id="controls" style="position: absolute;top:50px;right:50px;background:rgba(0,0,0,0.8);color:#fff;font-size:14px;min-width:300px; padding: 4px;cursor:default;"> + frames <input type="text" id="framecount" value="30" style="width:30px;"> + delay <input type="text" id="framedelay" value="0.06s" style="width:30px;"> + <button id="record" disabled>record</button> + <button id="save" disabled>save</button> + <span id="status"></span> + <div id="preview"></div> +</div> +</script> +<script type="text/javascript" src="js/vendor/gif-encode/util.js"></script> +<script type="text/javascript" src="js/vendor/gif-encode/tube.js"></script> +<script type="text/javascript" src="js/vendor/gif-encode/client.js"></script> +<script type="text/javascript" src="js/vendor/FileSaver/FileSaver.js"></script> +<script type="text/javascript" src="js/vendor/dataUriToBlob.js"></script> +<script type="text/javascript"> +(function(){ + var canvases = document.getElementsByTagName("canvas") + if (canvases.length == 0) { alert("no canvas found"); return; } + + var source = canvases[0] + + var encoder = new GifEncoder() + encoder.on("encoded-frame", encoded_frame) + encoder.on("rendered", rendered_bytes) + encoder.on("rendered-url", rendered_url) + + var w, h, x, y; + var last_t, frame_t, count, delay, done; + var frames = [] + var curtain, outline + var dragging = false + var lastGif + + init() + function init(){ + document.body.style.width = "100%" + document.body.style.height = "100%" + document.body.parentNode.style.width = "100%" + document.body.parentNode.style.height = "100%" + var template = document.getElementById("template").innerHTML + var el = document.createElement("div") + el.innerHTML = template + document.body.appendChild(el) + bind() + } + function bind(){ + curtain = document.getElementById("curtain") + outline = document.getElementById("outline") + controls = document.getElementById("outline") + document.getElementById("record").addEventListener("click", record, false) + document.getElementById("save").addEventListener("click", save, false) + curtain.addEventListener("mousedown", box_start, false) + curtain.addEventListener("mousemove", box_size, false) + curtain.addEventListener("mouseup", box_end, false) + outline.style.display = "none" + controls.style.display = "none" + } + function box_start(e){ + x = e.pageX + y = e.pageY + w = 1 + h = 1 + dragging = true + outline.style.left = px(x-1) + outline.style.top = px(y-1) + outline.style.width = px(w) + outline.style.height = px(h) + outline.style.display = "block" + } + function box_size(e){ + if (! dragging) return + w = e.pageX - x + h = e.pageY - y + outline.style.width = px(w) + outline.style.height = px(h) + } + function box_end(e){ + dragging = false + controls.style.display = "block" + enable("record") + document.getElementById("record").focus() + } + function enable(id){ document.getElementById(id).removeAttribute("disabled") } + function disable(id){ document.getElementById(id).setAttribute("disabled","disabled") } + function px(n){ return n + "px" } + function record(){ + count = parseInt(document.getElementById("framecount").value) + delay = parseFloat(document.getElementById("framedelay").value) * 1000 + done = 0 + frame_t = 0 + build() + capture() + last_t = +new Date() + requestAnimationFrame(recordloop) + status("recording") + disable("record") + } + function recordloop(){ + var canvas = document.createElement("canvas") + var t = +new Date() + frame_t += t - last_t + last_t = t + if (frame_t > delay) { + frame_t -= delay + capture() + } + if (done == count) { + render() + } + else { + requestAnimationFrame(recordloop) + } + } + function build(){ + frames = new Array(count) + for (var i = 0; i < count; i++){ + frames[i] = document.createElement("canvas") + frames[i].height = h + frames[i].width = w + } + } + function capture(){ + var frame = frames[done++] + var ctx = frame.getContext('2d') + ctx.fillStyle = document.body.backgroundColor + ctx.fillRect(0,0,w,h) + ctx.drawImage(source, x, y, w, h, 0, 0, w, h) + } + function render(){ + encoder.reset() + encoder.addFrames(frames, delay) + status("encoding") + try { + encoder.encode() + } + catch (e) { + rendering = false + status(e) + throw e + } + } + function status(s){ + document.getElementById("status").innerHTML = s + } + function encoded_frame(done,count){ + status("encoded " + done + " / " + count) + } + function rendered_bytes(bytes){ + status(filesize(bytes.length)) + } + function rendered_url(url){ + var image = new Image () + lastGif = image.src = url + document.getElementById("preview").innerHTML = "" + document.getElementById("preview").appendChild(image) + rendering = false + enable("record") + enable("save") + } + function save (){ + if (! lastGif) return; + var filename = (window.location.host + window.location.pathname).replace(/[^a-zA-Z0-9]/g,"-").replace(/-+/,"-") + var blob = dataUriToBlob(lastGif) + saveAs(blob, filename + "-" + (+new Date()) + ".gif"); + } + function filesize(n) { + if (n < 1e3) return n + " bytes" + if (n < 1e6) return decimalString(n/1e3) + " kb" + if (n < 1e9) return decimalString(n/1e6) + " mb" + return "WAY TOO BIG DUDE" + } + function decimalString(n){ + var m = Math.floor(n); + return m + "." + Math.round((n-m)*10) + } +})() +</script> +</body> +</html> + diff --git a/package.json b/package.json new file mode 100644 index 0000000..8aa641a --- /dev/null +++ b/package.json @@ -0,0 +1,10 @@ +{ + "name": "dither", + "version": "0.0.4", + "devDependencies": { + "grunt": "~0.4.1", + "grunt-contrib-concat": "~0.3.0", + "grunt-contrib-uglify": "~0.2.5", + "grunt-contrib-watch": "~0.5.3" + } +} |
