1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/image/test/unit/test_encoder_apng.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,470 @@
1.4 +/*
1.5 + * Test for APNG encoding in libpr0n
1.6 + *
1.7 + */
1.8 +
1.9 +
1.10 +const Ci = Components.interfaces;
1.11 +const Cc = Components.classes;
1.12 +
1.13 + // dispose=[none|background|previous]
1.14 + // blend=[source|over]
1.15 +
1.16 +var apng1A = {
1.17 + // A 3x3 image with 3 frames, alternating red, green, blue. RGB format.
1.18 + width : 3, height : 3, skipFirstFrame : false,
1.19 + format : Ci.imgIEncoder.INPUT_FORMAT_RGB,
1.20 + transparency : null,
1.21 + plays : 0,
1.22 +
1.23 + frames : [
1.24 + { // frame #1
1.25 + width : 3, height : 3,
1.26 + x_offset : 0, y_offset : 0,
1.27 + dispose : "none", blend : "source", delay : 500,
1.28 +
1.29 + format : Ci.imgIEncoder.INPUT_FORMAT_RGB, stride : 9,
1.30 + transparency : null,
1.31 +
1.32 + pixels : [
1.33 + 255,0,0, 255,0,0, 255,0,0,
1.34 + 255,0,0, 255,0,0, 255,0,0,
1.35 + 255,0,0, 255,0,0, 255,0,0
1.36 + ]
1.37 + },
1.38 +
1.39 + { // frame #2
1.40 + width : 3, height : 3,
1.41 + x_offset : 0, y_offset : 0,
1.42 + dispose : "none", blend : "source", delay : 500,
1.43 +
1.44 + format : Ci.imgIEncoder.INPUT_FORMAT_RGB, stride : 9,
1.45 + transparency : null,
1.46 +
1.47 + pixels : [
1.48 + 0,255,0, 0,255,0, 0,255,0,
1.49 + 0,255,0, 0,255,0, 0,255,0,
1.50 + 0,255,0, 0,255,0, 0,255,0
1.51 + ]
1.52 + },
1.53 +
1.54 + { // frame #3
1.55 + width : 3, height : 3,
1.56 + x_offset : 0, y_offset : 0,
1.57 + dispose : "none", blend : "source", delay : 500,
1.58 +
1.59 + format : Ci.imgIEncoder.INPUT_FORMAT_RGB, stride : 9,
1.60 + transparency : null,
1.61 +
1.62 + pixels : [
1.63 + 0,0,255, 0,0,255, 0,0,255,
1.64 + 0,0,255, 0,0,255, 0,0,255,
1.65 + 0,0,255, 0,0,255, 0,0,255
1.66 + ]
1.67 + }
1.68 +
1.69 + ],
1.70 + expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAIAAADZSiLoAAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAABBJREFUCJlj+M/AAEEMWFgAj44I+H2CySsAAAAaZmNUTAAAAAEAAAADAAAAAwAAAAAAAAAAAfQD6AAA7mXKzAAAABNmZEFUAAAAAgiZY2D4zwBFWFgAhpcI+I731VcAAAAaZmNUTAAAAAMAAAADAAAAAwAAAAAAAAAAAfQD6AAAA/MZJQAAABNmZEFUAAAABAiZY2Bg+A9DmCwAfaAI+AGmQVoAAAAASUVORK5CYII="
1.71 +};
1.72 +
1.73 +
1.74 +var apng1B = {
1.75 + // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format.
1.76 + width : 3, height : 3, skipFirstFrame : false,
1.77 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA,
1.78 + transparency : null,
1.79 + plays : 0,
1.80 +
1.81 + frames : [
1.82 + { // frame #1
1.83 + width : 3, height : 3,
1.84 + x_offset : 0, y_offset : 0,
1.85 + dispose : "none", blend : "source", delay : 500,
1.86 +
1.87 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.88 +
1.89 + pixels : [
1.90 + 255,0,0,255, 255,0,0,255, 255,0,0,255,
1.91 + 255,0,0,255, 255,0,0,255, 255,0,0,255,
1.92 + 255,0,0,255, 255,0,0,255, 255,0,0,255
1.93 + ]
1.94 + },
1.95 +
1.96 + { // frame #2
1.97 + width : 3, height : 3,
1.98 + x_offset : 0, y_offset : 0,
1.99 + dispose : "none", blend : "source", delay : 500,
1.100 +
1.101 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.102 +
1.103 + pixels : [
1.104 + 0,255,0,255, 0,255,0,255, 0,255,0,255,
1.105 + 0,255,0,255, 0,255,0,255, 0,255,0,255,
1.106 + 0,255,0,255, 0,255,0,255, 0,255,0,255
1.107 + ]
1.108 + },
1.109 +
1.110 + { // frame #3
1.111 + width : 3, height : 3,
1.112 + x_offset : 0, y_offset : 0,
1.113 + dispose : "none", blend : "source", delay : 500,
1.114 +
1.115 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.116 +
1.117 + pixels : [
1.118 + 0,0,255,255, 0,0,255,255, 0,0,255,255,
1.119 + 0,0,255,255, 0,0,255,255, 0,0,255,255,
1.120 + 0,0,255,255, 0,0,255,255, 0,0,255,255
1.121 + ]
1.122 + }
1.123 +
1.124 + ],
1.125 + expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAABFJREFUCJlj+M/A8B+GGXByAF3XEe/CoiJ1AAAAGmZjVEwAAAABAAAAAwAAAAMAAAAAAAAAAAH0A+gAAO5lyswAAAASZmRBVAAAAAIImWNg+I8EcXIAVOAR77Vyl9QAAAAaZmNUTAAAAAMAAAADAAAAAwAAAAAAAAAAAfQD6AAAA/MZJQAAABRmZEFUAAAABAiZY2Bg+P8fgXFxAEvpEe8rClxSAAAAAElFTkSuQmCC"
1.126 +};
1.127 +
1.128 +
1.129 +var apng1C = {
1.130 + // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format.
1.131 + // The first frame is skipped, so it will only flash green/blue (or static red in an APNG-unaware viewer)
1.132 + width : 3, height : 3, skipFirstFrame : true,
1.133 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA,
1.134 + transparency : null,
1.135 + plays : 0,
1.136 +
1.137 + frames : [
1.138 + { // frame #1
1.139 + width : 3, height : 3,
1.140 + x_offset : 0, y_offset : 0,
1.141 + dispose : "none", blend : "source", delay : 500,
1.142 +
1.143 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.144 +
1.145 + pixels : [
1.146 + 255,0,0,255, 255,0,0,255, 255,0,0,255,
1.147 + 255,0,0,255, 255,0,0,255, 255,0,0,255,
1.148 + 255,0,0,255, 255,0,0,255, 255,0,0,255
1.149 + ]
1.150 + },
1.151 +
1.152 + { // frame #2
1.153 + width : 3, height : 3,
1.154 + x_offset : 0, y_offset : 0,
1.155 + dispose : "none", blend : "source", delay : 500,
1.156 +
1.157 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.158 +
1.159 + pixels : [
1.160 + 0,255,0,255, 0,255,0,255, 0,255,0,255,
1.161 + 0,255,0,255, 0,255,0,255, 0,255,0,255,
1.162 + 0,255,0,255, 0,255,0,255, 0,255,0,255
1.163 + ]
1.164 + },
1.165 +
1.166 + { // frame #3
1.167 + width : 3, height : 3,
1.168 + x_offset : 0, y_offset : 0,
1.169 + dispose : "none", blend : "source", delay : 500,
1.170 +
1.171 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.172 +
1.173 + pixels : [
1.174 + 0,0,255,255, 0,0,255,255, 0,0,255,255,
1.175 + 0,0,255,255, 0,0,255,255, 0,0,255,255,
1.176 + 0,0,255,255, 0,0,255,255, 0,0,255,255
1.177 + ]
1.178 + }
1.179 +
1.180 + ],
1.181 + expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAACAAAAAPONk3AAAAARSURBVAiZY/jPwPAfhhlwcgBd1xHvwqIidQAAABpmY1RMAAAAAAAAAAMAAAADAAAAAAAAAAAB9APoAAB1FiAYAAAAEmZkQVQAAAABCJljYPiPBHFyAFTgEe+kD/2tAAAAGmZjVEwAAAACAAAAAwAAAAMAAAAAAAAAAAH0A+gAAJiA8/EAAAAUZmRBVAAAAAMImWNgYPj/H4FxcQBL6RHvC5ggGQAAAABJRU5ErkJggg=="
1.182 +};
1.183 +
1.184 +
1.185 +var apng2A = {
1.186 + // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format.
1.187 + // blend = over mode
1.188 + // (The green frame is a horizontal gradient, and the blue frame is a
1.189 + // vertical gradient. They stack as they animate.)
1.190 + width : 3, height : 3, skipFirstFrame : false,
1.191 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA,
1.192 + transparency : null,
1.193 + plays : 0,
1.194 +
1.195 + frames : [
1.196 + { // frame #1
1.197 + width : 3, height : 3,
1.198 + x_offset : 0, y_offset : 0,
1.199 + dispose : "none", blend : "source", delay : 500,
1.200 +
1.201 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.202 +
1.203 + pixels : [
1.204 + 255,0,0,255, 255,0,0,255, 255,0,0,255,
1.205 + 255,0,0,255, 255,0,0,255, 255,0,0,255,
1.206 + 255,0,0,255, 255,0,0,255, 255,0,0,255
1.207 + ]
1.208 + },
1.209 +
1.210 + { // frame #2
1.211 + width : 3, height : 3,
1.212 + x_offset : 0, y_offset : 0,
1.213 + dispose : "none", blend : "over", delay : 500,
1.214 +
1.215 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.216 +
1.217 + pixels : [
1.218 + 0,255,0,255, 0,255,0,180, 0,255,0,75,
1.219 + 0,255,0,255, 0,255,0,180, 0,255,0,75,
1.220 + 0,255,0,255, 0,255,0,180, 0,255,0,75
1.221 + ]
1.222 + },
1.223 +
1.224 + { // frame #3
1.225 + width : 3, height : 3,
1.226 + x_offset : 0, y_offset : 0,
1.227 + dispose : "none", blend : "over", delay : 500,
1.228 +
1.229 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.230 +
1.231 + pixels : [
1.232 + 0,0,255,75, 0,0,255,75, 0,0,255,75,
1.233 + 0,0,255,180, 0,0,255,180, 0,0,255,180,
1.234 + 0,0,255,255, 0,0,255,255, 0,0,255,255
1.235 + ]
1.236 + }
1.237 +
1.238 + ],
1.239 + expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAABFJREFUCJlj+M/A8B+GGXByAF3XEe/CoiJ1AAAAGmZjVEwAAAABAAAAAwAAAAMAAAAAAAAAAAH0A+gAAZli+loAAAAcZmRBVAAAAAIImWNg+M/wn+E/wxaG/wzeDDg5ACeGDvKVa3pyAAAAGmZjVEwAAAADAAAAAwAAAAMAAAAAAAAAAAH0A+gAAXT0KbMAAAAcZmRBVAAAAAQImWNgYPjvjcAM/7cgMMP//zAMAPqkDvLn1m3SAAAAAElFTkSuQmCC"
1.240 +};
1.241 +
1.242 +
1.243 +var apng2B = {
1.244 + // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format.
1.245 + // blend = over, dispose = background
1.246 + // (The green frame is a horizontal gradient, and the blue frame is a
1.247 + // vertical gradient. Each frame is displayed individually, blended to
1.248 + // whatever the background is.)
1.249 + width : 3, height : 3, skipFirstFrame : false,
1.250 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA,
1.251 + transparency : null,
1.252 + plays : 0,
1.253 +
1.254 + frames : [
1.255 + { // frame #1
1.256 + width : 3, height : 3,
1.257 + x_offset : 0, y_offset : 0,
1.258 + dispose : "background", blend : "source", delay : 500,
1.259 +
1.260 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.261 +
1.262 + pixels : [
1.263 + 255,0,0,255, 255,0,0,255, 255,0,0,255,
1.264 + 255,0,0,255, 255,0,0,255, 255,0,0,255,
1.265 + 255,0,0,255, 255,0,0,255, 255,0,0,255
1.266 + ]
1.267 + },
1.268 +
1.269 + { // frame #2
1.270 + width : 3, height : 3,
1.271 + x_offset : 0, y_offset : 0,
1.272 + dispose : "background", blend : "over", delay : 500,
1.273 +
1.274 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.275 +
1.276 + pixels : [
1.277 + 0,255,0,255, 0,255,0,180, 0,255,0,75,
1.278 + 0,255,0,255, 0,255,0,180, 0,255,0,75,
1.279 + 0,255,0,255, 0,255,0,180, 0,255,0,75
1.280 + ]
1.281 + },
1.282 +
1.283 + { // frame #3
1.284 + width : 3, height : 3,
1.285 + x_offset : 0, y_offset : 0,
1.286 + dispose : "background", blend : "over", delay : 500,
1.287 +
1.288 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.289 +
1.290 + pixels : [
1.291 + 0,0,255,75, 0,0,255,75, 0,0,255,75,
1.292 + 0,0,255,180, 0,0,255,180, 0,0,255,180,
1.293 + 0,0,255,255, 0,0,255,255, 0,0,255,255
1.294 + ]
1.295 + }
1.296 +
1.297 + ],
1.298 + expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AEAbA0RWQAAABFJREFUCJlj+M/A8B+GGXByAF3XEe/CoiJ1AAAAGmZjVEwAAAABAAAAAwAAAAMAAAAAAAAAAAH0A+gBAYB5yxsAAAAcZmRBVAAAAAIImWNg+M/wn+E/wxaG/wzeDDg5ACeGDvKVa3pyAAAAGmZjVEwAAAADAAAAAwAAAAMAAAAAAAAAAAH0A+gBAW3vGPIAAAAcZmRBVAAAAAQImWNgYPjvjcAM/7cgMMP//zAMAPqkDvLn1m3SAAAAAElFTkSuQmCC"
1.299 +};
1.300 +
1.301 +
1.302 +var apng3 = {
1.303 + // A 3x3 image with 4 frames. First frame is white, then 1x1 frames draw a diagonal line
1.304 + width : 3, height : 3, skipFirstFrame : false,
1.305 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA,
1.306 + transparency : null,
1.307 + plays : 0,
1.308 +
1.309 + frames : [
1.310 + { // frame #1
1.311 + width : 3, height : 3,
1.312 + x_offset : 0, y_offset : 0,
1.313 + dispose : "none", blend : "source", delay : 500,
1.314 +
1.315 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.316 +
1.317 + pixels : [
1.318 +
1.319 + 255,255,255,255, 255,255,255,255, 255,255,255,255,
1.320 + 255,255,255,255, 255,255,255,255, 255,255,255,255,
1.321 + 255,255,255,255, 255,255,255,255, 255,255,255,255
1.322 + ]
1.323 + },
1.324 +
1.325 + { // frame #2
1.326 + width : 1, height : 1,
1.327 + x_offset : 0, y_offset : 0,
1.328 + dispose : "none", blend : "source", delay : 500,
1.329 +
1.330 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.331 +
1.332 + pixels : [
1.333 + 0,0,0,255
1.334 + ]
1.335 + },
1.336 +
1.337 + { // frame #3
1.338 + width : 1, height : 1,
1.339 + x_offset : 1, y_offset : 1,
1.340 + dispose : "none", blend : "source", delay : 500,
1.341 +
1.342 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.343 +
1.344 + pixels : [
1.345 + 0,0,0,255
1.346 + ]
1.347 + },
1.348 +
1.349 + { // frame #4
1.350 + width : 1, height : 1,
1.351 + x_offset : 2, y_offset : 2,
1.352 + dispose : "none", blend : "source", delay : 500,
1.353 +
1.354 + format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12,
1.355 +
1.356 + pixels : [
1.357 + 0,0,0,255
1.358 + ]
1.359 + }
1.360 + ],
1.361 +
1.362 + expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAAEAAAAAHzNZtAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAAA5JREFUCJlj+I8EGHByALuHI91kueRqAAAAGmZjVEwAAAABAAAAAQAAAAEAAAAAAAAAAAH0A+gAADJXfawAAAARZmRBVAAAAAIImWNgYGD4DwABBAEAbr5mpgAAABpmY1RMAAAAAwAAAAEAAAABAAAAAQAAAAEB9APoAAC4OHoxAAAAEWZkQVQAAAAECJljYGBg+A8AAQQBAJZ8LRAAAAAaZmNUTAAAAAUAAAABAAAAAQAAAAIAAAACAfQD6AAA/fh01wAAABFmZEFUAAAABgiZY2BgYPgPAAEEAQB3Eum9AAAAAElFTkSuQmCC"
1.363 +};
1.364 +
1.365 +// Main test entry point.
1.366 +function run_test() {
1.367 + dump("Checking apng1A...\n");
1.368 + run_test_for(apng1A);
1.369 + dump("Checking apng1B...\n");
1.370 + run_test_for(apng1B);
1.371 + dump("Checking apng1C...\n");
1.372 + run_test_for(apng1C);
1.373 +
1.374 + dump("Checking apng2A...\n");
1.375 + run_test_for(apng2A);
1.376 + dump("Checking apng2B...\n");
1.377 + run_test_for(apng2B);
1.378 +
1.379 + dump("Checking apng3...\n");
1.380 + run_test_for(apng3);
1.381 +};
1.382 +
1.383 +
1.384 +function run_test_for(input) {
1.385 + var encoder, dataURL;
1.386 +
1.387 + encoder = encodeImage(input);
1.388 + dataURL = makeDataURL(encoder, "image/png");
1.389 + do_check_eq(dataURL, input.expected);
1.390 +};
1.391 +
1.392 +
1.393 +function encodeImage(input) {
1.394 + var encoder = Cc["@mozilla.org/image/encoder;2?type=image/png"].createInstance();
1.395 + encoder.QueryInterface(Ci.imgIEncoder);
1.396 +
1.397 + var options = "";
1.398 + if (input.transparency) { options += "transparency=" + input.transparency; }
1.399 + options += ";frames=" + input.frames.length;
1.400 + options += ";skipfirstframe=" + (input.skipFirstFrame ? "yes" : "no");
1.401 + options += ";plays=" + input.plays;
1.402 + encoder.startImageEncode(input.width, input.height, input.format, options);
1.403 +
1.404 + for (var i = 0; i < input.frames.length; i++) {
1.405 + var frame = input.frames[i];
1.406 +
1.407 + options = "";
1.408 + if (frame.transparency) { options += "transparency=" + input.transparency; }
1.409 + options += ";delay=" + frame.delay;
1.410 + options += ";dispose=" + frame.dispose;
1.411 + options += ";blend=" + frame.blend;
1.412 + if (frame.x_offset > 0) { options += ";xoffset=" + frame.x_offset; }
1.413 + if (frame.y_offset > 0) { options += ";yoffset=" + frame.y_offset; }
1.414 +
1.415 + encoder.addImageFrame(frame.pixels, frame.pixels.length,
1.416 + frame.width, frame.height, frame.stride, frame.format, options);
1.417 + }
1.418 +
1.419 + encoder.endImageEncode();
1.420 +
1.421 + return encoder;
1.422 +}
1.423 +
1.424 +
1.425 +function makeDataURL(encoder, mimetype) {
1.426 + var rawStream = encoder.QueryInterface(Ci.nsIInputStream);
1.427 +
1.428 + var stream = Cc["@mozilla.org/binaryinputstream;1"].createInstance();
1.429 + stream.QueryInterface(Ci.nsIBinaryInputStream);
1.430 +
1.431 + stream.setInputStream(rawStream);
1.432 +
1.433 + var bytes = stream.readByteArray(stream.available()); // returns int[]
1.434 +
1.435 + var base64String = toBase64(bytes);
1.436 +
1.437 + return "data:" + mimetype + ";base64," + base64String;
1.438 +}
1.439 +
1.440 +/* toBase64 copied from extensions/xml-rpc/src/nsXmlRpcClient.js */
1.441 +
1.442 +/* Convert data (an array of integers) to a Base64 string. */
1.443 +const toBase64Table = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz' +
1.444 + '0123456789+/';
1.445 +const base64Pad = '=';
1.446 +function toBase64(data) {
1.447 + var result = '';
1.448 + var length = data.length;
1.449 + var i;
1.450 + // Convert every three bytes to 4 ascii characters.
1.451 + for (i = 0; i < (length - 2); i += 3) {
1.452 + result += toBase64Table[data[i] >> 2];
1.453 + result += toBase64Table[((data[i] & 0x03) << 4) + (data[i+1] >> 4)];
1.454 + result += toBase64Table[((data[i+1] & 0x0f) << 2) + (data[i+2] >> 6)];
1.455 + result += toBase64Table[data[i+2] & 0x3f];
1.456 + }
1.457 +
1.458 + // Convert the remaining 1 or 2 bytes, pad out to 4 characters.
1.459 + if (length%3) {
1.460 + i = length - (length%3);
1.461 + result += toBase64Table[data[i] >> 2];
1.462 + if ((length%3) == 2) {
1.463 + result += toBase64Table[((data[i] & 0x03) << 4) + (data[i+1] >> 4)];
1.464 + result += toBase64Table[(data[i+1] & 0x0f) << 2];
1.465 + result += base64Pad;
1.466 + } else {
1.467 + result += toBase64Table[(data[i] & 0x03) << 4];
1.468 + result += base64Pad + base64Pad;
1.469 + }
1.470 + }
1.471 +
1.472 + return result;
1.473 +}
