The Tor Browser / file comparison
comparison: image/test/unit/test_encoder_apng.js
image/test/unit/test_encoder_apng.js
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
equal
deleted
inserted
replaced
| -1:000000000000 | 0:83660fb4ac56 |
|---|---|
| 1 /* | |
| 2 * Test for APNG encoding in libpr0n | |
| 3 * | |
| 4 */ | |
| 5 | |
| 6 | |
| 7 const Ci = Components.interfaces; | |
| 8 const Cc = Components.classes; | |
| 9 | |
| 10 // dispose=[none|background|previous] | |
| 11 // blend=[source|over] | |
| 12 | |
| 13 var apng1A = { | |
| 14 // A 3x3 image with 3 frames, alternating red, green, blue. RGB format. | |
| 15 width : 3, height : 3, skipFirstFrame : false, | |
| 16 format : Ci.imgIEncoder.INPUT_FORMAT_RGB, | |
| 17 transparency : null, | |
| 18 plays : 0, | |
| 19 | |
| 20 frames : [ | |
| 21 { // frame #1 | |
| 22 width : 3, height : 3, | |
| 23 x_offset : 0, y_offset : 0, | |
| 24 dispose : "none", blend : "source", delay : 500, | |
| 25 | |
| 26 format : Ci.imgIEncoder.INPUT_FORMAT_RGB, stride : 9, | |
| 27 transparency : null, | |
| 28 | |
| 29 pixels : [ | |
| 30 255,0,0, 255,0,0, 255,0,0, | |
| 31 255,0,0, 255,0,0, 255,0,0, | |
| 32 255,0,0, 255,0,0, 255,0,0 | |
| 33 ] | |
| 34 }, | |
| 35 | |
| 36 { // frame #2 | |
| 37 width : 3, height : 3, | |
| 38 x_offset : 0, y_offset : 0, | |
| 39 dispose : "none", blend : "source", delay : 500, | |
| 40 | |
| 41 format : Ci.imgIEncoder.INPUT_FORMAT_RGB, stride : 9, | |
| 42 transparency : null, | |
| 43 | |
| 44 pixels : [ | |
| 45 0,255,0, 0,255,0, 0,255,0, | |
| 46 0,255,0, 0,255,0, 0,255,0, | |
| 47 0,255,0, 0,255,0, 0,255,0 | |
| 48 ] | |
| 49 }, | |
| 50 | |
| 51 { // frame #3 | |
| 52 width : 3, height : 3, | |
| 53 x_offset : 0, y_offset : 0, | |
| 54 dispose : "none", blend : "source", delay : 500, | |
| 55 | |
| 56 format : Ci.imgIEncoder.INPUT_FORMAT_RGB, stride : 9, | |
| 57 transparency : null, | |
| 58 | |
| 59 pixels : [ | |
| 60 0,0,255, 0,0,255, 0,0,255, | |
| 61 0,0,255, 0,0,255, 0,0,255, | |
| 62 0,0,255, 0,0,255, 0,0,255 | |
| 63 ] | |
| 64 } | |
| 65 | |
| 66 ], | |
| 67 expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAIAAADZSiLoAAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAABBJREFUCJlj+M/AAEEMWFgAj44I+H2CySsAAAAaZmNUTAAAAAEAAAADAAAAAwAAAAAAAAAAAfQD6AAA7mXKzAAAABNmZEFUAAAAAgiZY2D4zwBFWFgAhpcI+I731VcAAAAaZmNUTAAAAAMAAAADAAAAAwAAAAAAAAAAAfQD6AAAA/MZJQAAABNmZEFUAAAABAiZY2Bg+A9DmCwAfaAI+AGmQVoAAAAASUVORK5CYII=" | |
| 68 }; | |
| 69 | |
| 70 | |
| 71 var apng1B = { | |
| 72 // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format. | |
| 73 width : 3, height : 3, skipFirstFrame : false, | |
| 74 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, | |
| 75 transparency : null, | |
| 76 plays : 0, | |
| 77 | |
| 78 frames : [ | |
| 79 { // frame #1 | |
| 80 width : 3, height : 3, | |
| 81 x_offset : 0, y_offset : 0, | |
| 82 dispose : "none", blend : "source", delay : 500, | |
| 83 | |
| 84 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 85 | |
| 86 pixels : [ | |
| 87 255,0,0,255, 255,0,0,255, 255,0,0,255, | |
| 88 255,0,0,255, 255,0,0,255, 255,0,0,255, | |
| 89 255,0,0,255, 255,0,0,255, 255,0,0,255 | |
| 90 ] | |
| 91 }, | |
| 92 | |
| 93 { // frame #2 | |
| 94 width : 3, height : 3, | |
| 95 x_offset : 0, y_offset : 0, | |
| 96 dispose : "none", blend : "source", delay : 500, | |
| 97 | |
| 98 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 99 | |
| 100 pixels : [ | |
| 101 0,255,0,255, 0,255,0,255, 0,255,0,255, | |
| 102 0,255,0,255, 0,255,0,255, 0,255,0,255, | |
| 103 0,255,0,255, 0,255,0,255, 0,255,0,255 | |
| 104 ] | |
| 105 }, | |
| 106 | |
| 107 { // frame #3 | |
| 108 width : 3, height : 3, | |
| 109 x_offset : 0, y_offset : 0, | |
| 110 dispose : "none", blend : "source", delay : 500, | |
| 111 | |
| 112 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 113 | |
| 114 pixels : [ | |
| 115 0,0,255,255, 0,0,255,255, 0,0,255,255, | |
| 116 0,0,255,255, 0,0,255,255, 0,0,255,255, | |
| 117 0,0,255,255, 0,0,255,255, 0,0,255,255 | |
| 118 ] | |
| 119 } | |
| 120 | |
| 121 ], | |
| 122 expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAABFJREFUCJlj+M/A8B+GGXByAF3XEe/CoiJ1AAAAGmZjVEwAAAABAAAAAwAAAAMAAAAAAAAAAAH0A+gAAO5lyswAAAASZmRBVAAAAAIImWNg+I8EcXIAVOAR77Vyl9QAAAAaZmNUTAAAAAMAAAADAAAAAwAAAAAAAAAAAfQD6AAAA/MZJQAAABRmZEFUAAAABAiZY2Bg+P8fgXFxAEvpEe8rClxSAAAAAElFTkSuQmCC" | |
| 123 }; | |
| 124 | |
| 125 | |
| 126 var apng1C = { | |
| 127 // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format. | |
| 128 // The first frame is skipped, so it will only flash green/blue (or static red in an APNG-unaware viewer) | |
| 129 width : 3, height : 3, skipFirstFrame : true, | |
| 130 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, | |
| 131 transparency : null, | |
| 132 plays : 0, | |
| 133 | |
| 134 frames : [ | |
| 135 { // frame #1 | |
| 136 width : 3, height : 3, | |
| 137 x_offset : 0, y_offset : 0, | |
| 138 dispose : "none", blend : "source", delay : 500, | |
| 139 | |
| 140 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 141 | |
| 142 pixels : [ | |
| 143 255,0,0,255, 255,0,0,255, 255,0,0,255, | |
| 144 255,0,0,255, 255,0,0,255, 255,0,0,255, | |
| 145 255,0,0,255, 255,0,0,255, 255,0,0,255 | |
| 146 ] | |
| 147 }, | |
| 148 | |
| 149 { // frame #2 | |
| 150 width : 3, height : 3, | |
| 151 x_offset : 0, y_offset : 0, | |
| 152 dispose : "none", blend : "source", delay : 500, | |
| 153 | |
| 154 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 155 | |
| 156 pixels : [ | |
| 157 0,255,0,255, 0,255,0,255, 0,255,0,255, | |
| 158 0,255,0,255, 0,255,0,255, 0,255,0,255, | |
| 159 0,255,0,255, 0,255,0,255, 0,255,0,255 | |
| 160 ] | |
| 161 }, | |
| 162 | |
| 163 { // frame #3 | |
| 164 width : 3, height : 3, | |
| 165 x_offset : 0, y_offset : 0, | |
| 166 dispose : "none", blend : "source", delay : 500, | |
| 167 | |
| 168 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 169 | |
| 170 pixels : [ | |
| 171 0,0,255,255, 0,0,255,255, 0,0,255,255, | |
| 172 0,0,255,255, 0,0,255,255, 0,0,255,255, | |
| 173 0,0,255,255, 0,0,255,255, 0,0,255,255 | |
| 174 ] | |
| 175 } | |
| 176 | |
| 177 ], | |
| 178 expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAACAAAAAPONk3AAAAARSURBVAiZY/jPwPAfhhlwcgBd1xHvwqIidQAAABpmY1RMAAAAAAAAAAMAAAADAAAAAAAAAAAB9APoAAB1FiAYAAAAEmZkQVQAAAABCJljYPiPBHFyAFTgEe+kD/2tAAAAGmZjVEwAAAACAAAAAwAAAAMAAAAAAAAAAAH0A+gAAJiA8/EAAAAUZmRBVAAAAAMImWNgYPj/H4FxcQBL6RHvC5ggGQAAAABJRU5ErkJggg==" | |
| 179 }; | |
| 180 | |
| 181 | |
| 182 var apng2A = { | |
| 183 // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format. | |
| 184 // blend = over mode | |
| 185 // (The green frame is a horizontal gradient, and the blue frame is a | |
| 186 // vertical gradient. They stack as they animate.) | |
| 187 width : 3, height : 3, skipFirstFrame : false, | |
| 188 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, | |
| 189 transparency : null, | |
| 190 plays : 0, | |
| 191 | |
| 192 frames : [ | |
| 193 { // frame #1 | |
| 194 width : 3, height : 3, | |
| 195 x_offset : 0, y_offset : 0, | |
| 196 dispose : "none", blend : "source", delay : 500, | |
| 197 | |
| 198 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 199 | |
| 200 pixels : [ | |
| 201 255,0,0,255, 255,0,0,255, 255,0,0,255, | |
| 202 255,0,0,255, 255,0,0,255, 255,0,0,255, | |
| 203 255,0,0,255, 255,0,0,255, 255,0,0,255 | |
| 204 ] | |
| 205 }, | |
| 206 | |
| 207 { // frame #2 | |
| 208 width : 3, height : 3, | |
| 209 x_offset : 0, y_offset : 0, | |
| 210 dispose : "none", blend : "over", delay : 500, | |
| 211 | |
| 212 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 213 | |
| 214 pixels : [ | |
| 215 0,255,0,255, 0,255,0,180, 0,255,0,75, | |
| 216 0,255,0,255, 0,255,0,180, 0,255,0,75, | |
| 217 0,255,0,255, 0,255,0,180, 0,255,0,75 | |
| 218 ] | |
| 219 }, | |
| 220 | |
| 221 { // frame #3 | |
| 222 width : 3, height : 3, | |
| 223 x_offset : 0, y_offset : 0, | |
| 224 dispose : "none", blend : "over", delay : 500, | |
| 225 | |
| 226 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 227 | |
| 228 pixels : [ | |
| 229 0,0,255,75, 0,0,255,75, 0,0,255,75, | |
| 230 0,0,255,180, 0,0,255,180, 0,0,255,180, | |
| 231 0,0,255,255, 0,0,255,255, 0,0,255,255 | |
| 232 ] | |
| 233 } | |
| 234 | |
| 235 ], | |
| 236 expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAABFJREFUCJlj+M/A8B+GGXByAF3XEe/CoiJ1AAAAGmZjVEwAAAABAAAAAwAAAAMAAAAAAAAAAAH0A+gAAZli+loAAAAcZmRBVAAAAAIImWNg+M/wn+E/wxaG/wzeDDg5ACeGDvKVa3pyAAAAGmZjVEwAAAADAAAAAwAAAAMAAAAAAAAAAAH0A+gAAXT0KbMAAAAcZmRBVAAAAAQImWNgYPjvjcAM/7cgMMP//zAMAPqkDvLn1m3SAAAAAElFTkSuQmCC" | |
| 237 }; | |
| 238 | |
| 239 | |
| 240 var apng2B = { | |
| 241 // A 3x3 image with 3 frames, alternating red, green, blue. RGBA format. | |
| 242 // blend = over, dispose = background | |
| 243 // (The green frame is a horizontal gradient, and the blue frame is a | |
| 244 // vertical gradient. Each frame is displayed individually, blended to | |
| 245 // whatever the background is.) | |
| 246 width : 3, height : 3, skipFirstFrame : false, | |
| 247 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, | |
| 248 transparency : null, | |
| 249 plays : 0, | |
| 250 | |
| 251 frames : [ | |
| 252 { // frame #1 | |
| 253 width : 3, height : 3, | |
| 254 x_offset : 0, y_offset : 0, | |
| 255 dispose : "background", blend : "source", delay : 500, | |
| 256 | |
| 257 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 258 | |
| 259 pixels : [ | |
| 260 255,0,0,255, 255,0,0,255, 255,0,0,255, | |
| 261 255,0,0,255, 255,0,0,255, 255,0,0,255, | |
| 262 255,0,0,255, 255,0,0,255, 255,0,0,255 | |
| 263 ] | |
| 264 }, | |
| 265 | |
| 266 { // frame #2 | |
| 267 width : 3, height : 3, | |
| 268 x_offset : 0, y_offset : 0, | |
| 269 dispose : "background", blend : "over", delay : 500, | |
| 270 | |
| 271 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 272 | |
| 273 pixels : [ | |
| 274 0,255,0,255, 0,255,0,180, 0,255,0,75, | |
| 275 0,255,0,255, 0,255,0,180, 0,255,0,75, | |
| 276 0,255,0,255, 0,255,0,180, 0,255,0,75 | |
| 277 ] | |
| 278 }, | |
| 279 | |
| 280 { // frame #3 | |
| 281 width : 3, height : 3, | |
| 282 x_offset : 0, y_offset : 0, | |
| 283 dispose : "background", blend : "over", delay : 500, | |
| 284 | |
| 285 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 286 | |
| 287 pixels : [ | |
| 288 0,0,255,75, 0,0,255,75, 0,0,255,75, | |
| 289 0,0,255,180, 0,0,255,180, 0,0,255,180, | |
| 290 0,0,255,255, 0,0,255,255, 0,0,255,255 | |
| 291 ] | |
| 292 } | |
| 293 | |
| 294 ], | |
| 295 expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAADAAAAAM7tusAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AEAbA0RWQAAABFJREFUCJlj+M/A8B+GGXByAF3XEe/CoiJ1AAAAGmZjVEwAAAABAAAAAwAAAAMAAAAAAAAAAAH0A+gBAYB5yxsAAAAcZmRBVAAAAAIImWNg+M/wn+E/wxaG/wzeDDg5ACeGDvKVa3pyAAAAGmZjVEwAAAADAAAAAwAAAAMAAAAAAAAAAAH0A+gBAW3vGPIAAAAcZmRBVAAAAAQImWNgYPjvjcAM/7cgMMP//zAMAPqkDvLn1m3SAAAAAElFTkSuQmCC" | |
| 296 }; | |
| 297 | |
| 298 | |
| 299 var apng3 = { | |
| 300 // A 3x3 image with 4 frames. First frame is white, then 1x1 frames draw a diagonal line | |
| 301 width : 3, height : 3, skipFirstFrame : false, | |
| 302 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, | |
| 303 transparency : null, | |
| 304 plays : 0, | |
| 305 | |
| 306 frames : [ | |
| 307 { // frame #1 | |
| 308 width : 3, height : 3, | |
| 309 x_offset : 0, y_offset : 0, | |
| 310 dispose : "none", blend : "source", delay : 500, | |
| 311 | |
| 312 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 313 | |
| 314 pixels : [ | |
| 315 | |
| 316 255,255,255,255, 255,255,255,255, 255,255,255,255, | |
| 317 255,255,255,255, 255,255,255,255, 255,255,255,255, | |
| 318 255,255,255,255, 255,255,255,255, 255,255,255,255 | |
| 319 ] | |
| 320 }, | |
| 321 | |
| 322 { // frame #2 | |
| 323 width : 1, height : 1, | |
| 324 x_offset : 0, y_offset : 0, | |
| 325 dispose : "none", blend : "source", delay : 500, | |
| 326 | |
| 327 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 328 | |
| 329 pixels : [ | |
| 330 0,0,0,255 | |
| 331 ] | |
| 332 }, | |
| 333 | |
| 334 { // frame #3 | |
| 335 width : 1, height : 1, | |
| 336 x_offset : 1, y_offset : 1, | |
| 337 dispose : "none", blend : "source", delay : 500, | |
| 338 | |
| 339 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 340 | |
| 341 pixels : [ | |
| 342 0,0,0,255 | |
| 343 ] | |
| 344 }, | |
| 345 | |
| 346 { // frame #4 | |
| 347 width : 1, height : 1, | |
| 348 x_offset : 2, y_offset : 2, | |
| 349 dispose : "none", blend : "source", delay : 500, | |
| 350 | |
| 351 format : Ci.imgIEncoder.INPUT_FORMAT_RGBA, stride : 12, | |
| 352 | |
| 353 pixels : [ | |
| 354 0,0,0,255 | |
| 355 ] | |
| 356 } | |
| 357 ], | |
| 358 | |
| 359 expected : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAACGFjVEwAAAAEAAAAAHzNZtAAAAAaZmNUTAAAAAAAAAADAAAAAwAAAAAAAAAAAfQD6AAAdRYgGAAAAA5JREFUCJlj+I8EGHByALuHI91kueRqAAAAGmZjVEwAAAABAAAAAQAAAAEAAAAAAAAAAAH0A+gAADJXfawAAAARZmRBVAAAAAIImWNgYGD4DwABBAEAbr5mpgAAABpmY1RMAAAAAwAAAAEAAAABAAAAAQAAAAEB9APoAAC4OHoxAAAAEWZkQVQAAAAECJljYGBg+A8AAQQBAJZ8LRAAAAAaZmNUTAAAAAUAAAABAAAAAQAAAAIAAAACAfQD6AAA/fh01wAAABFmZEFUAAAABgiZY2BgYPgPAAEEAQB3Eum9AAAAAElFTkSuQmCC" | |
| 360 }; | |
| 361 | |
| 362 // Main test entry point. | |
| 363 function run_test() { | |
| 364 dump("Checking apng1A...\n"); | |
| 365 run_test_for(apng1A); | |
| 366 dump("Checking apng1B...\n"); | |
| 367 run_test_for(apng1B); | |
| 368 dump("Checking apng1C...\n"); | |
| 369 run_test_for(apng1C); | |
| 370 | |
| 371 dump("Checking apng2A...\n"); | |
| 372 run_test_for(apng2A); | |
| 373 dump("Checking apng2B...\n"); | |
| 374 run_test_for(apng2B); | |
| 375 | |
| 376 dump("Checking apng3...\n"); | |
| 377 run_test_for(apng3); | |
| 378 }; | |
| 379 | |
| 380 | |
| 381 function run_test_for(input) { | |
| 382 var encoder, dataURL; | |
| 383 | |
| 384 encoder = encodeImage(input); | |
| 385 dataURL = makeDataURL(encoder, "image/png"); | |
| 386 do_check_eq(dataURL, input.expected); | |
| 387 }; | |
| 388 | |
| 389 | |
| 390 function encodeImage(input) { | |
| 391 var encoder = Cc["@mozilla.org/image/encoder;2?type=image/png"].createInstance(); | |
| 392 encoder.QueryInterface(Ci.imgIEncoder); | |
| 393 | |
| 394 var options = ""; | |
| 395 if (input.transparency) { options += "transparency=" + input.transparency; } | |
| 396 options += ";frames=" + input.frames.length; | |
| 397 options += ";skipfirstframe=" + (input.skipFirstFrame ? "yes" : "no"); | |
| 398 options += ";plays=" + input.plays; | |
| 399 encoder.startImageEncode(input.width, input.height, input.format, options); | |
| 400 | |
| 401 for (var i = 0; i < input.frames.length; i++) { | |
| 402 var frame = input.frames[i]; | |
| 403 | |
| 404 options = ""; | |
| 405 if (frame.transparency) { options += "transparency=" + input.transparency; } | |
| 406 options += ";delay=" + frame.delay; | |
| 407 options += ";dispose=" + frame.dispose; | |
| 408 options += ";blend=" + frame.blend; | |
| 409 if (frame.x_offset > 0) { options += ";xoffset=" + frame.x_offset; } | |
| 410 if (frame.y_offset > 0) { options += ";yoffset=" + frame.y_offset; } | |
| 411 | |
| 412 encoder.addImageFrame(frame.pixels, frame.pixels.length, | |
| 413 frame.width, frame.height, frame.stride, frame.format, options); | |
| 414 } | |
| 415 | |
| 416 encoder.endImageEncode(); | |
| 417 | |
| 418 return encoder; | |
| 419 } | |
| 420 | |
| 421 | |
| 422 function makeDataURL(encoder, mimetype) { | |
| 423 var rawStream = encoder.QueryInterface(Ci.nsIInputStream); | |
| 424 | |
| 425 var stream = Cc["@mozilla.org/binaryinputstream;1"].createInstance(); | |
| 426 stream.QueryInterface(Ci.nsIBinaryInputStream); | |
| 427 | |
| 428 stream.setInputStream(rawStream); | |
| 429 | |
| 430 var bytes = stream.readByteArray(stream.available()); // returns int[] | |
| 431 | |
| 432 var base64String = toBase64(bytes); | |
| 433 | |
| 434 return "data:" + mimetype + ";base64," + base64String; | |
| 435 } | |
| 436 | |
| 437 /* toBase64 copied from extensions/xml-rpc/src/nsXmlRpcClient.js */ | |
| 438 | |
| 439 /* Convert data (an array of integers) to a Base64 string. */ | |
| 440 const toBase64Table = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz' + | |
| 441 '0123456789+/'; | |
| 442 const base64Pad = '='; | |
| 443 function toBase64(data) { | |
| 444 var result = ''; | |
| 445 var length = data.length; | |
| 446 var i; | |
| 447 // Convert every three bytes to 4 ascii characters. | |
| 448 for (i = 0; i < (length - 2); i += 3) { | |
| 449 result += toBase64Table[data[i] >> 2]; | |
| 450 result += toBase64Table[((data[i] & 0x03) << 4) + (data[i+1] >> 4)]; | |
| 451 result += toBase64Table[((data[i+1] & 0x0f) << 2) + (data[i+2] >> 6)]; | |
| 452 result += toBase64Table[data[i+2] & 0x3f]; | |
| 453 } | |
| 454 | |
| 455 // Convert the remaining 1 or 2 bytes, pad out to 4 characters. | |
| 456 if (length%3) { | |
| 457 i = length - (length%3); | |
| 458 result += toBase64Table[data[i] >> 2]; | |
| 459 if ((length%3) == 2) { | |
| 460 result += toBase64Table[((data[i] & 0x03) << 4) + (data[i+1] >> 4)]; | |
| 461 result += toBase64Table[(data[i+1] & 0x0f) << 2]; | |
| 462 result += base64Pad; | |
| 463 } else { | |
| 464 result += toBase64Table[(data[i] & 0x03) << 4]; | |
| 465 result += base64Pad + base64Pad; | |
| 466 } | |
| 467 } | |
| 468 | |
| 469 return result; | |
| 470 } |
