| | 1 | /** |
| | 2 | * plupload.html5.js |
| | 3 | * |
| | 4 | * Copyright 2009, Moxiecode Systems AB |
| | 5 | * Released under GPL License. |
| | 6 | * |
| | 7 | * License: http://www.plupload.com/license |
| | 8 | * Contributing: http://www.plupload.com/contributing |
| | 9 | */ |
| | 10 | |
| | 11 | // JSLint defined globals |
| | 12 | /*global plupload:false, File:false, window:false, atob:false, FormData:false, FileReader:false, ArrayBuffer:false, Uint8Array:false, BlobBuilder:false, unescape:false */ |
| | 13 | |
| | 14 | (function(window, document, plupload, undef) { |
| | 15 | var html5files = {}, // queue of original File objects |
| | 16 | fakeSafariDragDrop; |
| | 17 | |
| | 18 | function readFileAsDataURL(file, callback) { |
| | 19 | var reader; |
| | 20 | |
| | 21 | // Use FileReader if it's available |
| | 22 | if ("FileReader" in window) { |
| | 23 | reader = new FileReader(); |
| | 24 | reader.readAsDataURL(file); |
| | 25 | reader.onload = function() { |
| | 26 | callback(reader.result); |
| | 27 | }; |
| | 28 | } else { |
| | 29 | return callback(file.getAsDataURL()); |
| | 30 | } |
| | 31 | } |
| | 32 | |
| | 33 | function readFileAsBinary(file, callback) { |
| | 34 | var reader; |
| | 35 | |
| | 36 | // Use FileReader if it's available |
| | 37 | if ("FileReader" in window) { |
| | 38 | reader = new FileReader(); |
| | 39 | reader.readAsBinaryString(file); |
| | 40 | reader.onload = function() { |
| | 41 | callback(reader.result); |
| | 42 | }; |
| | 43 | } else { |
| | 44 | return callback(file.getAsBinary()); |
| | 45 | } |
| | 46 | } |
| | 47 | |
| | 48 | function scaleImage(file, resize, mime, callback) { |
| | 49 | var canvas, context, img, scale, |
| | 50 | up = this; |
| | 51 | |
| | 52 | readFileAsDataURL(html5files[file.id], function(data) { |
| | 53 | // Setup canvas and context |
| | 54 | canvas = document.createElement("canvas"); |
| | 55 | canvas.style.display = 'none'; |
| | 56 | document.body.appendChild(canvas); |
| | 57 | context = canvas.getContext('2d'); |
| | 58 | |
| | 59 | // Load image |
| | 60 | img = new Image(); |
| | 61 | img.onerror = img.onabort = function() { |
| | 62 | // Failed to load, the image may be invalid |
| | 63 | callback({success : false}); |
| | 64 | }; |
| | 65 | img.onload = function() { |
| | 66 | var width, height, percentage, jpegHeaders, exifParser; |
| | 67 | |
| | 68 | if (!resize['width']) { |
| | 69 | resize['width'] = img.width; |
| | 70 | } |
| | 71 | |
| | 72 | if (!resize['height']) { |
| | 73 | resize['height'] = img.height; |
| | 74 | } |
| | 75 | |
| | 76 | scale = Math.min(resize.width / img.width, resize.height / img.height); |
| | 77 | |
| | 78 | if (scale < 1 || (scale === 1 && mime === 'image/jpeg')) { |
| | 79 | width = Math.round(img.width * scale); |
| | 80 | height = Math.round(img.height * scale); |
| | 81 | |
| | 82 | // Scale image and canvas |
| | 83 | canvas.width = width; |
| | 84 | canvas.height = height; |
| | 85 | context.drawImage(img, 0, 0, width, height); |
| | 86 | |
| | 87 | // Preserve JPEG headers |
| | 88 | if (mime === 'image/jpeg') { |
| | 89 | jpegHeaders = new JPEG_Headers(atob(data.substring(data.indexOf('base64,') + 7))); |
| | 90 | if (jpegHeaders['headers'] && jpegHeaders['headers'].length) { |
| | 91 | exifParser = new ExifParser(); |
| | 92 | |
| | 93 | if (exifParser.init(jpegHeaders.get('exif')[0])) { |
| | 94 | // Set new width and height |
| | 95 | exifParser.setExif('PixelXDimension', width); |
| | 96 | exifParser.setExif('PixelYDimension', height); |
| | 97 | |
| | 98 | // Update EXIF header |
| | 99 | jpegHeaders.set('exif', exifParser.getBinary()); |
| | 100 | |
| | 101 | // trigger Exif events only if someone listens to them |
| | 102 | if (up.hasEventListener('ExifData')) { |
| | 103 | up.trigger('ExifData', file, exifParser.EXIF()); |
| | 104 | } |
| | 105 | |
| | 106 | if (up.hasEventListener('GpsData')) { |
| | 107 | up.trigger('GpsData', file, exifParser.GPS()); |
| | 108 | } |
| | 109 | } |
| | 110 | } |
| | 111 | |
| | 112 | if (resize['quality']) { |
| | 113 | // Try quality property first |
| | 114 | try { |
| | 115 | data = canvas.toDataURL(mime, resize['quality'] / 100); |
| | 116 | } catch (e) { |
| | 117 | data = canvas.toDataURL(mime); |
| | 118 | } |
| | 119 | } |
| | 120 | } else { |
| | 121 | data = canvas.toDataURL(mime); |
| | 122 | } |
| | 123 | |
| | 124 | // Remove data prefix information and grab the base64 encoded data and decode it |
| | 125 | data = data.substring(data.indexOf('base64,') + 7); |
| | 126 | data = atob(data); |
| | 127 | |
| | 128 | // Restore JPEG headers if applicable |
| | 129 | if (jpegHeaders && jpegHeaders['headers'] && jpegHeaders['headers'].length) { |
| | 130 | data = jpegHeaders.restore(data); |
| | 131 | jpegHeaders.purge(); // free memory |
| | 132 | } |
| | 133 | |
| | 134 | // Remove canvas and execute callback with decoded image data |
| | 135 | canvas.parentNode.removeChild(canvas); |
| | 136 | callback({success : true, data : data}); |
| | 137 | } else { |
| | 138 | // Image does not need to be resized |
| | 139 | callback({success : false}); |
| | 140 | } |
| | 141 | }; |
| | 142 | |
| | 143 | img.src = data; |
| | 144 | }); |
| | 145 | } |
| | 146 | |
| | 147 | /** |
| | 148 | * HMTL5 implementation. This runtime supports these features: dragdrop, jpgresize, pngresize. |
| | 149 | * |
| | 150 | * @static |
| | 151 | * @class plupload.runtimes.Html5 |
| | 152 | * @extends plupload.Runtime |
| | 153 | */ |
| | 154 | plupload.runtimes.Html5 = plupload.addRuntime("html5", { |
| | 155 | /** |
| | 156 | * Returns a list of supported features for the runtime. |
| | 157 | * |
| | 158 | * @return {Object} Name/value object with supported features. |
| | 159 | */ |
| | 160 | getFeatures : function() { |
| | 161 | var xhr, hasXhrSupport, hasProgress, canSendBinary, dataAccessSupport, sliceSupport; |
| | 162 | |
| | 163 | hasXhrSupport = hasProgress = dataAccessSupport = sliceSupport = false; |
| | 164 | |
| | 165 | if (window.XMLHttpRequest) { |
| | 166 | xhr = new XMLHttpRequest(); |
| | 167 | hasProgress = !!xhr.upload; |
| | 168 | hasXhrSupport = !!(xhr.sendAsBinary || xhr.upload); |
| | 169 | } |
| | 170 | |
| | 171 | // Check for support for various features |
| | 172 | if (hasXhrSupport) { |
| | 173 | canSendBinary = !!(xhr.sendAsBinary || (window.Uint8Array && window.ArrayBuffer)); |
| | 174 | |
| | 175 | // Set dataAccessSupport only for Gecko since BlobBuilder and XHR doesn't handle binary data correctly |
| | 176 | dataAccessSupport = !!(File && (File.prototype.getAsDataURL || window.FileReader) && canSendBinary); |
| | 177 | sliceSupport = !!(File && (File.prototype.mozSlice || File.prototype.webkitSlice || File.prototype.slice)); |
| | 178 | } |
| | 179 | |
| | 180 | // Getting safari version in order to fix fakeSarafiDrop - for 5.1.2 and 4.* or lower. |
| | 181 | var version = navigator.userAgent.match(/Version\/(\d+(?:\.\d+)*)/); |
| | 182 | version = version.length > 1 ? version[1] : version.substr(version.indexof('/') + 1); |
| | 183 | |
| | 184 | // sniff out Safari for Windows and fake drag/drop |
| | 185 | fakeSafariDragDrop = plupload.ua.safari && plupload.ua.windows && ('5.1.2' == version || (/^[0-4](?:\.\d+)*/).test(version)); |
| | 186 | |
| | 187 | return { |
| | 188 | html5: hasXhrSupport, // This is a special one that we check inside the init call |
| | 189 | dragdrop: (function() { |
| | 190 | // this comes directly from Modernizr: http://www.modernizr.com/ |
| | 191 | var div = document.createElement('div'); |
| | 192 | return ('draggable' in div) || ('ondragstart' in div && 'ondrop' in div); |
| | 193 | }()), |
| | 194 | jpgresize: dataAccessSupport, |
| | 195 | pngresize: dataAccessSupport, |
| | 196 | multipart: dataAccessSupport || !!window.FileReader || !!window.FormData, |
| | 197 | canSendBinary: canSendBinary, |
| | 198 | // gecko 2/5/6 can't send blob with FormData: https://bugzilla.mozilla.org/show_bug.cgi?id=649150 |
| | 199 | cantSendBlobInFormData: !!(plupload.ua.gecko && window.FormData && window.FileReader && !FileReader.prototype.readAsArrayBuffer), |
| | 200 | progress: hasProgress, |
| | 201 | chunks: sliceSupport, |
| | 202 | // Safari on Windows has problems when selecting multiple files |
| | 203 | multi_selection: !(plupload.ua.safari && plupload.ua.windows), |
| | 204 | // WebKit and Gecko 2+ can trigger file dialog progrmmatically |
| | 205 | triggerDialog: (plupload.ua.gecko && window.FormData || plupload.ua.webkit) |
| | 206 | }; |
| | 207 | }, |
| | 208 | |
| | 209 | /** |
| | 210 | * Initializes the upload runtime. |
| | 211 | * |
| | 212 | * @method init |
| | 213 | * @param {plupload.Uploader} uploader Uploader instance that needs to be initialized. |
| | 214 | * @param {function} callback Callback to execute when the runtime initializes or fails to initialize. If it succeeds an object with a parameter name success will be set to true. |
| | 215 | */ |
| | 216 | init : function(uploader, callback) { |
| | 217 | var features, xhr; |
| | 218 | |
| | 219 | function addSelectedFiles(native_files) { |
| | 220 | var file, i, files = [], id, fileNames = {}; |
| | 221 | |
| | 222 | // Add the selected files to the file queue |
| | 223 | for (i = 0; i < native_files.length; i++) { |
| | 224 | file = native_files[i]; |
| | 225 | |
| | 226 | // Safari on Windows will add first file from dragged set multiple times |
| | 227 | // @see: https://bugs.webkit.org/show_bug.cgi?id=37957 |
| | 228 | if (fileNames[file.name]) { |
| | 229 | continue; |
| | 230 | } |
| | 231 | fileNames[file.name] = true; |
| | 232 | |
| | 233 | // Store away gears blob internally |
| | 234 | id = plupload.guid(); |
| | 235 | html5files[id] = file; |
| | 236 | |
| | 237 | // Expose id, name and size |
| | 238 | files.push(new plupload.File(id, file.fileName || file.name, file.fileSize || file.size)); // fileName / fileSize depricated |
| | 239 | } |
| | 240 | |
| | 241 | // Trigger FilesAdded event if we added any |
| | 242 | if (files.length) { |
| | 243 | uploader.trigger("FilesAdded", files); |
| | 244 | } |
| | 245 | } |
| | 246 | |
| | 247 | // No HTML5 upload support |
| | 248 | features = this.getFeatures(); |
| | 249 | if (!features.html5) { |
| | 250 | callback({success : false}); |
| | 251 | return; |
| | 252 | } |
| | 253 | |
| | 254 | uploader.bind("Init", function(up) { |
| | 255 | var inputContainer, browseButton, mimes = [], i, y, filters = up.settings.filters, ext, type, container = document.body, inputFile; |
| | 256 | |
| | 257 | // Create input container and insert it at an absolute position within the browse button |
| | 258 | inputContainer = document.createElement('div'); |
| | 259 | inputContainer.id = up.id + '_html5_container'; |
| | 260 | |
| | 261 | plupload.extend(inputContainer.style, { |
| | 262 | position : 'absolute', |
| | 263 | background : uploader.settings.shim_bgcolor || 'transparent', |
| | 264 | width : '100px', |
| | 265 | height : '100px', |
| | 266 | overflow : 'hidden', |
| | 267 | zIndex : 99999, |
| | 268 | opacity : uploader.settings.shim_bgcolor ? '' : 0 // Force transparent if bgcolor is undefined |
| | 269 | }); |
| | 270 | inputContainer.className = 'plupload html5'; |
| | 271 | |
| | 272 | if (uploader.settings.container) { |
| | 273 | container = document.getElementById(uploader.settings.container); |
| | 274 | if (plupload.getStyle(container, 'position') === 'static') { |
| | 275 | container.style.position = 'relative'; |
| | 276 | } |
| | 277 | } |
| | 278 | |
| | 279 | container.appendChild(inputContainer); |
| | 280 | |
| | 281 | // Convert extensions to mime types list |
| | 282 | no_type_restriction: |
| | 283 | for (i = 0; i < filters.length; i++) { |
| | 284 | ext = filters[i].extensions.split(/,/); |
| | 285 | |
| | 286 | for (y = 0; y < ext.length; y++) { |
| | 287 | |
| | 288 | // If there's an asterisk in the list, then accept attribute is not required |
| | 289 | if (ext[y] === '*') { |
| | 290 | mimes = []; |
| | 291 | break no_type_restriction; |
| | 292 | } |
| | 293 | |
| | 294 | type = plupload.mimeTypes[ext[y]]; |
| | 295 | |
| | 296 | if (type && plupload.inArray(type, mimes) === -1) { |
| | 297 | mimes.push(type); |
| | 298 | } |
| | 299 | } |
| | 300 | } |
| | 301 | |
| | 302 | |
| | 303 | // Insert the input inside the input container |
| | 304 | inputContainer.innerHTML = '<input id="' + uploader.id + '_html5" ' + ' style="font-size:999px"' + |
| | 305 | ' type="file" accept="' + mimes.join(',') + '" ' + |
| | 306 | (uploader.settings.multi_selection && uploader.features.multi_selection ? 'multiple="multiple"' : '') + ' />'; |
| | 307 | |
| | 308 | inputContainer.scrollTop = 100; |
| | 309 | inputFile = document.getElementById(uploader.id + '_html5'); |
| | 310 | |
| | 311 | if (up.features.triggerDialog) { |
| | 312 | plupload.extend(inputFile.style, { |
| | 313 | position: 'absolute', |
| | 314 | width: '100%', |
| | 315 | height: '100%' |
| | 316 | }); |
| | 317 | } else { |
| | 318 | // shows arrow cursor instead of the text one, bit more logical |
| | 319 | plupload.extend(inputFile.style, { |
| | 320 | cssFloat: 'right', |
| | 321 | styleFloat: 'right' |
| | 322 | }); |
| | 323 | } |
| | 324 | |
| | 325 | inputFile.onchange = function() { |
| | 326 | // Add the selected files from file input |
| | 327 | addSelectedFiles(this.files); |
| | 328 | |
| | 329 | // Clearing the value enables the user to select the same file again if they want to |
| | 330 | this.value = ''; |
| | 331 | }; |
| | 332 | |
| | 333 | /* Since we have to place input[type=file] on top of the browse_button for some browsers (FF, Opera), |
| | 334 | browse_button loses interactivity, here we try to neutralize this issue highlighting browse_button |
| | 335 | with a special classes |
| | 336 | TODO: needs to be revised as things will change */ |
| | 337 | browseButton = document.getElementById(up.settings.browse_button); |
| | 338 | if (browseButton) { |
| | 339 | var hoverClass = up.settings.browse_button_hover, |
| | 340 | activeClass = up.settings.browse_button_active, |
| | 341 | topElement = up.features.triggerDialog ? browseButton : inputContainer; |
| | 342 | |
| | 343 | if (hoverClass) { |
| | 344 | plupload.addEvent(topElement, 'mouseover', function() { |
| | 345 | plupload.addClass(browseButton, hoverClass); |
| | 346 | }, up.id); |
| | 347 | plupload.addEvent(topElement, 'mouseout', function() { |
| | 348 | plupload.removeClass(browseButton, hoverClass); |
| | 349 | }, up.id); |
| | 350 | } |
| | 351 | |
| | 352 | if (activeClass) { |
| | 353 | plupload.addEvent(topElement, 'mousedown', function() { |
| | 354 | plupload.addClass(browseButton, activeClass); |
| | 355 | }, up.id); |
| | 356 | plupload.addEvent(document.body, 'mouseup', function() { |
| | 357 | plupload.removeClass(browseButton, activeClass); |
| | 358 | }, up.id); |
| | 359 | } |
| | 360 | |
| | 361 | // Route click event to the input[type=file] element for supporting browsers |
| | 362 | if (up.features.triggerDialog) { |
| | 363 | plupload.addEvent(browseButton, 'click', function(e) { |
| | 364 | var input = document.getElementById(up.id + '_html5'); |
| | 365 | if (input && !input.disabled) { // for some reason FF (up to 8.0.1 so far) lets to click disabled input[type=file] |
| | 366 | input.click(); |
| | 367 | } |
| | 368 | e.preventDefault(); |
| | 369 | }, up.id); |
| | 370 | } |
| | 371 | } |
| | 372 | }); |
| | 373 | |
| | 374 | // Add drop handler |
| | 375 | uploader.bind("PostInit", function() { |
| | 376 | var dropElm = document.getElementById(uploader.settings.drop_element); |
| | 377 | |
| | 378 | if (dropElm) { |
| | 379 | // Lets fake drag/drop on Safari by moving a input type file in front of the mouse pointer when we drag into the drop zone |
| | 380 | // TODO: Remove this logic once Safari has official drag/drop support |
| | 381 | if (fakeSafariDragDrop) { |
| | 382 | plupload.addEvent(dropElm, 'dragenter', function(e) { |
| | 383 | var dropInputElm, dropPos, dropSize; |
| | 384 | |
| | 385 | // Get or create drop zone |
| | 386 | dropInputElm = document.getElementById(uploader.id + "_drop"); |
| | 387 | if (!dropInputElm) { |
| | 388 | dropInputElm = document.createElement("input"); |
| | 389 | dropInputElm.setAttribute('type', "file"); |
| | 390 | dropInputElm.setAttribute('id', uploader.id + "_drop"); |
| | 391 | dropInputElm.setAttribute('multiple', 'multiple'); |
| | 392 | |
| | 393 | plupload.addEvent(dropInputElm, 'change', function() { |
| | 394 | // Add the selected files from file input |
| | 395 | addSelectedFiles(this.files); |
| | 396 | |
| | 397 | // Remove input element |
| | 398 | plupload.removeEvent(dropInputElm, 'change', uploader.id); |
| | 399 | dropInputElm.parentNode.removeChild(dropInputElm); |
| | 400 | }, uploader.id); |
| | 401 | |
| | 402 | dropElm.appendChild(dropInputElm); |
| | 403 | } |
| | 404 | |
| | 405 | dropPos = plupload.getPos(dropElm, document.getElementById(uploader.settings.container)); |
| | 406 | dropSize = plupload.getSize(dropElm); |
| | 407 | |
| | 408 | if (plupload.getStyle(dropElm, 'position') === 'static') { |
| | 409 | plupload.extend(dropElm.style, { |
| | 410 | position : 'relative' |
| | 411 | }); |
| | 412 | } |
| | 413 | |
| | 414 | plupload.extend(dropInputElm.style, { |
| | 415 | position : 'absolute', |
| | 416 | display : 'block', |
| | 417 | top : 0, |
| | 418 | left : 0, |
| | 419 | width : dropSize.w + 'px', |
| | 420 | height : dropSize.h + 'px', |
| | 421 | opacity : 0 |
| | 422 | }); |
| | 423 | }, uploader.id); |
| | 424 | |
| | 425 | return; |
| | 426 | } |
| | 427 | |
| | 428 | // Block browser default drag over |
| | 429 | plupload.addEvent(dropElm, 'dragover', function(e) { |
| | 430 | e.preventDefault(); |
| | 431 | }, uploader.id); |
| | 432 | |
| | 433 | // Attach drop handler and grab files |
| | 434 | plupload.addEvent(dropElm, 'drop', function(e) { |
| | 435 | var dataTransfer = e.dataTransfer; |
| | 436 | |
| | 437 | // Add dropped files |
| | 438 | if (dataTransfer && dataTransfer.files) { |
| | 439 | addSelectedFiles(dataTransfer.files); |
| | 440 | } |
| | 441 | |
| | 442 | e.preventDefault(); |
| | 443 | }, uploader.id); |
| | 444 | } |
| | 445 | }); |
| | 446 | |
| | 447 | uploader.bind("Refresh", function(up) { |
| | 448 | var browseButton, browsePos, browseSize, inputContainer, zIndex; |
| | 449 | |
| | 450 | browseButton = document.getElementById(uploader.settings.browse_button); |
| | 451 | if (browseButton) { |
| | 452 | browsePos = plupload.getPos(browseButton, document.getElementById(up.settings.container)); |
| | 453 | browseSize = plupload.getSize(browseButton); |
| | 454 | inputContainer = document.getElementById(uploader.id + '_html5_container'); |
| | 455 | |
| | 456 | plupload.extend(inputContainer.style, { |
| | 457 | top : browsePos.y + 'px', |
| | 458 | left : browsePos.x + 'px', |
| | 459 | width : browseSize.w + 'px', |
| | 460 | height : browseSize.h + 'px' |
| | 461 | }); |
| | 462 | |
| | 463 | // for WebKit place input element underneath the browse button and route onclick event |
| | 464 | // TODO: revise when browser support for this feature will change |
| | 465 | if (uploader.features.triggerDialog) { |
| | 466 | if (plupload.getStyle(browseButton, 'position') === 'static') { |
| | 467 | plupload.extend(browseButton.style, { |
| | 468 | position : 'relative' |
| | 469 | }); |
| | 470 | } |
| | 471 | |
| | 472 | zIndex = parseInt(plupload.getStyle(browseButton, 'z-index'), 10); |
| | 473 | if (isNaN(zIndex)) { |
| | 474 | zIndex = 0; |
| | 475 | } |
| | 476 | |
| | 477 | plupload.extend(browseButton.style, { |
| | 478 | zIndex : zIndex |
| | 479 | }); |
| | 480 | |
| | 481 | plupload.extend(inputContainer.style, { |
| | 482 | zIndex : zIndex - 1 |
| | 483 | }); |
| | 484 | } |
| | 485 | } |
| | 486 | }); |
| | 487 | |
| | 488 | uploader.bind("DisableBrowse", function(up, disabled) { |
| | 489 | var input = document.getElementById(up.id + '_html5'); |
| | 490 | if (input) { |
| | 491 | input.disabled = disabled; |
| | 492 | } |
| | 493 | }); |
| | 494 | |
| | 495 | uploader.bind("CancelUpload", function() { |
| | 496 | if (xhr.abort) { |
| | 497 | xhr.abort(); |
| | 498 | } |
| | 499 | }); |
| | 500 | |
| | 501 | uploader.bind("UploadFile", function(up, file) { |
| | 502 | var settings = up.settings, nativeFile, resize; |
| | 503 | |
| | 504 | function w3cBlobSlice(blob, start, end) { |
| | 505 | var blobSlice; |
| | 506 | |
| | 507 | if (File.prototype.slice) { |
| | 508 | try { |
| | 509 | blob.slice(); // depricated version will throw WRONG_ARGUMENTS_ERR exception |
| | 510 | return blob.slice(start, end); |
| | 511 | } catch (e) { |
| | 512 | // depricated slice method |
| | 513 | return blob.slice(start, end - start); |
| | 514 | } |
| | 515 | // slice method got prefixed: https://bugzilla.mozilla.org/show_bug.cgi?id=649672 |
| | 516 | } else if (blobSlice = File.prototype.webkitSlice || File.prototype.mozSlice) { |
| | 517 | return blobSlice.call(blob, start, end); |
| | 518 | } else { |
| | 519 | return null; // or throw some exception |
| | 520 | } |
| | 521 | } |
| | 522 | |
| | 523 | function sendBinaryBlob(blob) { |
| | 524 | var chunk = 0, loaded = 0, |
| | 525 | fr = ("FileReader" in window) ? new FileReader : null; |
| | 526 | |
| | 527 | |
| | 528 | function uploadNextChunk() { |
| | 529 | var chunkBlob, br, chunks, args, chunkSize, curChunkSize, mimeType, url = up.settings.url; |
| | 530 | |
| | 531 | |
| | 532 | function prepareAndSend(bin) { |
| | 533 | var multipartDeltaSize = 0, |
| | 534 | boundary = '----pluploadboundary' + plupload.guid(), formData, dashdash = '--', crlf = '\r\n', multipartBlob = ''; |
| | 535 | |
| | 536 | xhr = new XMLHttpRequest; |
| | 537 | |
| | 538 | // Do we have upload progress support |
| | 539 | if (xhr.upload) { |
| | 540 | xhr.upload.onprogress = function(e) { |
| | 541 | file.loaded = Math.min(file.size, loaded + e.loaded - multipartDeltaSize); // Loaded can be larger than file size due to multipart encoding |
| | 542 | up.trigger('UploadProgress', file); |
| | 543 | }; |
| | 544 | } |
| | 545 | |
| | 546 | xhr.onreadystatechange = function() { |
| | 547 | var httpStatus, chunkArgs; |
| | 548 | |
| | 549 | if (xhr.readyState == 4 && up.state !== plupload.STOPPED) { |
| | 550 | // Getting the HTTP status might fail on some Gecko versions |
| | 551 | try { |
| | 552 | httpStatus = xhr.status; |
| | 553 | } catch (ex) { |
| | 554 | httpStatus = 0; |
| | 555 | } |
| | 556 | |
| | 557 | // Is error status |
| | 558 | if (httpStatus >= 400) { |
| | 559 | up.trigger('Error', { |
| | 560 | code : plupload.HTTP_ERROR, |
| | 561 | message : plupload.translate('HTTP Error.'), |
| | 562 | file : file, |
| | 563 | status : httpStatus |
| | 564 | }); |
| | 565 | } else { |
| | 566 | // Handle chunk response |
| | 567 | if (chunks) { |
| | 568 | chunkArgs = { |
| | 569 | chunk : chunk, |
| | 570 | chunks : chunks, |
| | 571 | response : xhr.responseText, |
| | 572 | status : httpStatus |
| | 573 | }; |
| | 574 | |
| | 575 | up.trigger('ChunkUploaded', file, chunkArgs); |
| | 576 | loaded += curChunkSize; |
| | 577 | |
| | 578 | // Stop upload |
| | 579 | if (chunkArgs.cancelled) { |
| | 580 | file.status = plupload.FAILED; |
| | 581 | return; |
| | 582 | } |
| | 583 | |
| | 584 | file.loaded = Math.min(file.size, (chunk + 1) * chunkSize); |
| | 585 | } else { |
| | 586 | file.loaded = file.size; |
| | 587 | } |
| | 588 | |
| | 589 | up.trigger('UploadProgress', file); |
| | 590 | |
| | 591 | bin = chunkBlob = formData = multipartBlob = null; // Free memory |
| | 592 | |
| | 593 | // Check if file is uploaded |
| | 594 | if (!chunks || ++chunk >= chunks) { |
| | 595 | file.status = plupload.DONE; |
| | 596 | |
| | 597 | up.trigger('FileUploaded', file, { |
| | 598 | response : xhr.responseText, |
| | 599 | status : httpStatus |
| | 600 | }); |
| | 601 | } else { |
| | 602 | // Still chunks left |
| | 603 | uploadNextChunk(); |
| | 604 | } |
| | 605 | } |
| | 606 | } |
| | 607 | }; |
| | 608 | |
| | 609 | |
| | 610 | // Build multipart request |
| | 611 | if (up.settings.multipart && features.multipart) { |
| | 612 | |
| | 613 | args.name = file.target_name || file.name; |
| | 614 | |
| | 615 | xhr.open("post", url, true); |
| | 616 | |
| | 617 | // Set custom headers |
| | 618 | plupload.each(up.settings.headers, function(value, name) { |
| | 619 | xhr.setRequestHeader(name, value); |
| | 620 | }); |
| | 621 | |
| | 622 | |
| | 623 | // if has FormData support like Chrome 6+, Safari 5+, Firefox 4, use it |
| | 624 | if (typeof(bin) !== 'string' && !!window.FormData) { |
| | 625 | formData = new FormData(); |
| | 626 | |
| | 627 | // Add multipart params |
| | 628 | plupload.each(plupload.extend(args, up.settings.multipart_params), function(value, name) { |
| | 629 | formData.append(name, value); |
| | 630 | }); |
| | 631 | |
| | 632 | // Add file and send it |
| | 633 | formData.append(up.settings.file_data_name, bin); |
| | 634 | xhr.send(formData); |
| | 635 | |
| | 636 | return; |
| | 637 | } // if no FormData we can still try to send it directly as last resort (see below) |
| | 638 | |
| | 639 | |
| | 640 | if (typeof(bin) === 'string') { |
| | 641 | // Trying to send the whole thing as binary... |
| | 642 | |
| | 643 | // multipart request |
| | 644 | xhr.setRequestHeader('Content-Type', 'multipart/form-data; boundary=' + boundary); |
| | 645 | |
| | 646 | // append multipart parameters |
| | 647 | plupload.each(plupload.extend(args, up.settings.multipart_params), function(value, name) { |
| | 648 | multipartBlob += dashdash + boundary + crlf + |
| | 649 | 'Content-Disposition: form-data; name="' + name + '"' + crlf + crlf; |
| | 650 | |
| | 651 | multipartBlob += unescape(encodeURIComponent(value)) + crlf; |
| | 652 | }); |
| | 653 | |
| | 654 | mimeType = plupload.mimeTypes[file.name.replace(/^.+\.([^.]+)/, '$1').toLowerCase()] || 'application/octet-stream'; |
| | 655 | |
| | 656 | // Build RFC2388 blob |
| | 657 | multipartBlob += dashdash + boundary + crlf + |
| | 658 | 'Content-Disposition: form-data; name="' + up.settings.file_data_name + '"; filename="' + unescape(encodeURIComponent(file.name)) + '"' + crlf + |
| | 659 | 'Content-Type: ' + mimeType + crlf + crlf + |
| | 660 | bin + crlf + |
| | 661 | dashdash + boundary + dashdash + crlf; |
| | 662 | |
| | 663 | multipartDeltaSize = multipartBlob.length - bin.length; |
| | 664 | bin = multipartBlob; |
| | 665 | |
| | 666 | |
| | 667 | if (xhr.sendAsBinary) { // Gecko |
| | 668 | xhr.sendAsBinary(bin); |
| | 669 | } else if (features.canSendBinary) { // WebKit with typed arrays support |
| | 670 | var ui8a = new Uint8Array(bin.length); |
| | 671 | for (var i = 0; i < bin.length; i++) { |
| | 672 | ui8a[i] = (bin.charCodeAt(i) & 0xff); |
| | 673 | } |
| | 674 | xhr.send(ui8a.buffer); |
| | 675 | } |
| | 676 | return; // will return from here only if shouldn't send binary |
| | 677 | } |
| | 678 | } |
| | 679 | |
| | 680 | // if no multipart, or last resort, send as binary stream |
| | 681 | url = plupload.buildUrl(up.settings.url, plupload.extend(args, up.settings.multipart_params)); |
| | 682 | |
| | 683 | xhr.open("post", url, true); |
| | 684 | |
| | 685 | xhr.setRequestHeader('Content-Type', 'application/octet-stream'); // Binary stream header |
| | 686 | |
| | 687 | // Set custom headers |
| | 688 | plupload.each(up.settings.headers, function(value, name) { |
| | 689 | xhr.setRequestHeader(name, value); |
| | 690 | }); |
| | 691 | |
| | 692 | xhr.send(bin); |
| | 693 | } // prepareAndSend |
| | 694 | |
| | 695 | |
| | 696 | // File upload finished |
| | 697 | if (file.status == plupload.DONE || file.status == plupload.FAILED || up.state == plupload.STOPPED) { |
| | 698 | return; |
| | 699 | } |
| | 700 | |
| | 701 | // Standard arguments |
| | 702 | args = {name : file.target_name || file.name}; |
| | 703 | |
| | 704 | // Only add chunking args if needed |
| | 705 | if (settings.chunk_size && file.size > settings.chunk_size && (features.chunks || typeof(blob) == 'string')) { // blob will be of type string if it was loaded in memory |
| | 706 | chunkSize = settings.chunk_size; |
| | 707 | chunks = Math.ceil(file.size / chunkSize); |
| | 708 | curChunkSize = Math.min(chunkSize, file.size - (chunk * chunkSize)); |
| | 709 | |
| | 710 | // Blob is string so we need to fake chunking, this is not |
| | 711 | // ideal since the whole file is loaded into memory |
| | 712 | if (typeof(blob) == 'string') { |
| | 713 | chunkBlob = blob.substring(chunk * chunkSize, chunk * chunkSize + curChunkSize); |
| | 714 | } else { |
| | 715 | // Slice the chunk |
| | 716 | chunkBlob = w3cBlobSlice(blob, chunk * chunkSize, chunk * chunkSize + curChunkSize); |
| | 717 | } |
| | 718 | |
| | 719 | // Setup query string arguments |
| | 720 | args.chunk = chunk; |
| | 721 | args.chunks = chunks; |
| | 722 | } else { |
| | 723 | curChunkSize = file.size; |
| | 724 | chunkBlob = blob; |
| | 725 | } |
| | 726 | |
| | 727 | // workaround Gecko 2,5,6 FormData+Blob bug: https://bugzilla.mozilla.org/show_bug.cgi?id=649150 |
| | 728 | if (up.settings.multipart && features.multipart && typeof(chunkBlob) !== 'string' && fr && features.cantSendBlobInFormData && features.chunks && up.settings.chunk_size) { // Gecko 2,5,6 |
| | 729 | fr.onload = function() { |
| | 730 | prepareAndSend(fr.result); |
| | 731 | } |
| | 732 | fr.readAsBinaryString(chunkBlob); |
| | 733 | } else { |
| | 734 | prepareAndSend(chunkBlob); |
| | 735 | } |
| | 736 | |
| | 737 | } |
| | 738 | |
| | 739 | // Start uploading chunks |
| | 740 | uploadNextChunk(); |
| | 741 | } |
| | 742 | |
| | 743 | nativeFile = html5files[file.id]; |
| | 744 | |
| | 745 | // Resize image if it's a supported format and resize is enabled |
| | 746 | if (features.jpgresize && up.settings.resize && /\.(png|jpg|jpeg)$/i.test(file.name)) { |
| | 747 | scaleImage.call(up, file, up.settings.resize, /\.png$/i.test(file.name) ? 'image/png' : 'image/jpeg', function(res) { |
| | 748 | // If it was scaled send the scaled image if it failed then |
| | 749 | // send the raw image and let the server do the scaling |
| | 750 | if (res.success) { |
| | 751 | file.size = res.data.length; |
| | 752 | sendBinaryBlob(res.data); |
| | 753 | } else if (features.chunks) { |
| | 754 | sendBinaryBlob(nativeFile); |
| | 755 | } else { |
| | 756 | readFileAsBinary(nativeFile, sendBinaryBlob); // for browsers not supporting File.slice (e.g. FF3.6) |
| | 757 | } |
| | 758 | }); |
| | 759 | // if there's no way to slice file without preloading it in memory, preload it |
| | 760 | } else if (!features.chunks && features.jpgresize) { |
| | 761 | readFileAsBinary(nativeFile, sendBinaryBlob); |
| | 762 | } else { |
| | 763 | sendBinaryBlob(nativeFile); |
| | 764 | } |
| | 765 | }); |
| | 766 | |
| | 767 | |
| | 768 | uploader.bind('Destroy', function(up) { |
| | 769 | var name, element, container = document.body, |
| | 770 | elements = { |
| | 771 | inputContainer: up.id + '_html5_container', |
| | 772 | inputFile: up.id + '_html5', |
| | 773 | browseButton: up.settings.browse_button, |
| | 774 | dropElm: up.settings.drop_element |
| | 775 | }; |
| | 776 | |
| | 777 | // Unbind event handlers |
| | 778 | for (name in elements) { |
| | 779 | element = document.getElementById(elements[name]); |
| | 780 | if (element) { |
| | 781 | plupload.removeAllEvents(element, up.id); |
| | 782 | } |
| | 783 | } |
| | 784 | plupload.removeAllEvents(document.body, up.id); |
| | 785 | |
| | 786 | if (up.settings.container) { |
| | 787 | container = document.getElementById(up.settings.container); |
| | 788 | } |
| | 789 | |
| | 790 | // Remove mark-up |
| | 791 | container.removeChild(document.getElementById(elements.inputContainer)); |
| | 792 | }); |
| | 793 | |
| | 794 | callback({success : true}); |
| | 795 | } |
| | 796 | }); |
| | 797 | |
| | 798 | function BinaryReader() { |
| | 799 | var II = false, bin; |
| | 800 | |
| | 801 | // Private functions |
| | 802 | function read(idx, size) { |
| | 803 | var mv = II ? 0 : -8 * (size - 1), sum = 0, i; |
| | 804 | |
| | 805 | for (i = 0; i < size; i++) { |
| | 806 | sum |= (bin.charCodeAt(idx + i) << Math.abs(mv + i*8)); |
| | 807 | } |
| | 808 | |
| | 809 | return sum; |
| | 810 | } |
| | 811 | |
| | 812 | function putstr(segment, idx, length) { |
| | 813 | var length = arguments.length === 3 ? length : bin.length - idx - 1; |
| | 814 | |
| | 815 | bin = bin.substr(0, idx) + segment + bin.substr(length + idx); |
| | 816 | } |
| | 817 | |
| | 818 | function write(idx, num, size) { |
| | 819 | var str = '', mv = II ? 0 : -8 * (size - 1), i; |
| | 820 | |
| | 821 | for (i = 0; i < size; i++) { |
| | 822 | str += String.fromCharCode((num >> Math.abs(mv + i*8)) & 255); |
| | 823 | } |
| | 824 | |
| | 825 | putstr(str, idx, size); |
| | 826 | } |
| | 827 | |
| | 828 | // Public functions |
| | 829 | return { |
| | 830 | II: function(order) { |
| | 831 | if (order === undef) { |
| | 832 | return II; |
| | 833 | } else { |
| | 834 | II = order; |
| | 835 | } |
| | 836 | }, |
| | 837 | |
| | 838 | init: function(binData) { |
| | 839 | II = false; |
| | 840 | bin = binData; |
| | 841 | }, |
| | 842 | |
| | 843 | SEGMENT: function(idx, length, segment) { |
| | 844 | switch (arguments.length) { |
| | 845 | case 1: |
| | 846 | return bin.substr(idx, bin.length - idx - 1); |
| | 847 | case 2: |
| | 848 | return bin.substr(idx, length); |
| | 849 | case 3: |
| | 850 | putstr(segment, idx, length); |
| | 851 | break; |
| | 852 | default: return bin; |
| | 853 | } |
| | 854 | }, |
| | 855 | |
| | 856 | BYTE: function(idx) { |
| | 857 | return read(idx, 1); |
| | 858 | }, |
| | 859 | |
| | 860 | SHORT: function(idx) { |
| | 861 | return read(idx, 2); |
| | 862 | }, |
| | 863 | |
| | 864 | LONG: function(idx, num) { |
| | 865 | if (num === undef) { |
| | 866 | return read(idx, 4); |
| | 867 | } else { |
| | 868 | write(idx, num, 4); |
| | 869 | } |
| | 870 | }, |
| | 871 | |
| | 872 | SLONG: function(idx) { // 2's complement notation |
| | 873 | var num = read(idx, 4); |
| | 874 | |
| | 875 | return (num > 2147483647 ? num - 4294967296 : num); |
| | 876 | }, |
| | 877 | |
| | 878 | STRING: function(idx, size) { |
| | 879 | var str = ''; |
| | 880 | |
| | 881 | for (size += idx; idx < size; idx++) { |
| | 882 | str += String.fromCharCode(read(idx, 1)); |
| | 883 | } |
| | 884 | |
| | 885 | return str; |
| | 886 | } |
| | 887 | }; |
| | 888 | } |
| | 889 | |
| | 890 | function JPEG_Headers(data) { |
| | 891 | |
| | 892 | var markers = { |
| | 893 | 0xFFE1: { |
| | 894 | app: 'EXIF', |
| | 895 | name: 'APP1', |
| | 896 | signature: "Exif\0" |
| | 897 | }, |
| | 898 | 0xFFE2: { |
| | 899 | app: 'ICC', |
| | 900 | name: 'APP2', |
| | 901 | signature: "ICC_PROFILE\0" |
| | 902 | }, |
| | 903 | 0xFFED: { |
| | 904 | app: 'IPTC', |
| | 905 | name: 'APP13', |
| | 906 | signature: "Photoshop 3.0\0" |
| | 907 | } |
| | 908 | }, |
| | 909 | headers = [], read, idx, marker = undef, length = 0, limit; |
| | 910 | |
| | 911 | |
| | 912 | read = new BinaryReader(); |
| | 913 | read.init(data); |
| | 914 | |
| | 915 | // Check if data is jpeg |
| | 916 | if (read.SHORT(0) !== 0xFFD8) { |
| | 917 | return; |
| | 918 | } |
| | 919 | |
| | 920 | idx = 2; |
| | 921 | limit = Math.min(1048576, data.length); |
| | 922 | |
| | 923 | while (idx <= limit) { |
| | 924 | marker = read.SHORT(idx); |
| | 925 | |
| | 926 | // omit RST (restart) markers |
| | 927 | if (marker >= 0xFFD0 && marker <= 0xFFD7) { |
| | 928 | idx += 2; |
| | 929 | continue; |
| | 930 | } |
| | 931 | |
| | 932 | // no headers allowed after SOS marker |
| | 933 | if (marker === 0xFFDA || marker === 0xFFD9) { |
| | 934 | break; |
| | 935 | } |
| | 936 | |
| | 937 | length = read.SHORT(idx + 2) + 2; |
| | 938 | |
| | 939 | if (markers[marker] && |
| | 940 | read.STRING(idx + 4, markers[marker].signature.length) === markers[marker].signature) { |
| | 941 | headers.push({ |
| | 942 | hex: marker, |
| | 943 | app: markers[marker].app.toUpperCase(), |
| | 944 | name: markers[marker].name.toUpperCase(), |
| | 945 | start: idx, |
| | 946 | length: length, |
| | 947 | segment: read.SEGMENT(idx, length) |
| | 948 | }); |
| | 949 | } |
| | 950 | idx += length; |
| | 951 | } |
| | 952 | |
| | 953 | read.init(null); // free memory |
| | 954 | |
| | 955 | return { |
| | 956 | |
| | 957 | headers: headers, |
| | 958 | |
| | 959 | restore: function(data) { |
| | 960 | read.init(data); |
| | 961 | |
| | 962 | // Check if data is jpeg |
| | 963 | var jpegHeaders = new JPEG_Headers(data); |
| | 964 | |
| | 965 | if (!jpegHeaders['headers']) { |
| | 966 | return false; |
| | 967 | } |
| | 968 | |
| | 969 | // Delete any existing headers that need to be replaced |
| | 970 | for (var i = jpegHeaders['headers'].length; i > 0; i--) { |
| | 971 | var hdr = jpegHeaders['headers'][i - 1]; |
| | 972 | read.SEGMENT(hdr.start, hdr.length, '') |
| | 973 | } |
| | 974 | jpegHeaders.purge(); |
| | 975 | |
| | 976 | idx = read.SHORT(2) == 0xFFE0 ? 4 + read.SHORT(4) : 2; |
| | 977 | |
| | 978 | for (var i = 0, max = headers.length; i < max; i++) { |
| | 979 | read.SEGMENT(idx, 0, headers[i].segment); |
| | 980 | idx += headers[i].length; |
| | 981 | } |
| | 982 | |
| | 983 | return read.SEGMENT(); |
| | 984 | }, |
| | 985 | |
| | 986 | get: function(app) { |
| | 987 | var array = []; |
| | 988 | |
| | 989 | for (var i = 0, max = headers.length; i < max; i++) { |
| | 990 | if (headers[i].app === app.toUpperCase()) { |
| | 991 | array.push(headers[i].segment); |
| | 992 | } |
| | 993 | } |
| | 994 | return array; |
| | 995 | }, |
| | 996 | |
| | 997 | set: function(app, segment) { |
| | 998 | var array = []; |
| | 999 | |
| | 1000 | if (typeof(segment) === 'string') { |
| | 1001 | array.push(segment); |
| | 1002 | } else { |
| | 1003 | array = segment; |
| | 1004 | } |
| | 1005 | |
| | 1006 | for (var i = ii = 0, max = headers.length; i < max; i++) { |
| | 1007 | if (headers[i].app === app.toUpperCase()) { |
| | 1008 | headers[i].segment = array[ii]; |
| | 1009 | headers[i].length = array[ii].length; |
| | 1010 | ii++; |
| | 1011 | } |
| | 1012 | if (ii >= array.length) break; |
| | 1013 | } |
| | 1014 | }, |
| | 1015 | |
| | 1016 | purge: function() { |
| | 1017 | headers = []; |
| | 1018 | read.init(null); |
| | 1019 | } |
| | 1020 | }; |
| | 1021 | } |
| | 1022 | |
| | 1023 | |
| | 1024 | function ExifParser() { |
| | 1025 | // Private ExifParser fields |
| | 1026 | var data, tags, offsets = {}, tagDescs; |
| | 1027 | |
| | 1028 | data = new BinaryReader(); |
| | 1029 | |
| | 1030 | tags = { |
| | 1031 | tiff : { |
| | 1032 | /* |
| | 1033 | The image orientation viewed in terms of rows and columns. |
| | 1034 | |
| | 1035 | 1 - The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side. |
| | 1036 | 2 - The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side. |
| | 1037 | 3 - The 0th row is at the visual top of the image, and the 0th column is the visual right-hand side. |
| | 1038 | 4 - The 0th row is at the visual bottom of the image, and the 0th column is the visual right-hand side. |
| | 1039 | 5 - The 0th row is at the visual bottom of the image, and the 0th column is the visual left-hand side. |
| | 1040 | 6 - The 0th row is the visual left-hand side of the image, and the 0th column is the visual top. |
| | 1041 | 7 - The 0th row is the visual right-hand side of the image, and the 0th column is the visual top. |
| | 1042 | 8 - The 0th row is the visual right-hand side of the image, and the 0th column is the visual bottom. |
| | 1043 | 9 - The 0th row is the visual left-hand side of the image, and the 0th column is the visual bottom. |
| | 1044 | */ |
| | 1045 | 0x0112: 'Orientation', |
| | 1046 | 0x8769: 'ExifIFDPointer', |
| | 1047 | 0x8825: 'GPSInfoIFDPointer' |
| | 1048 | }, |
| | 1049 | exif : { |
| | 1050 | 0x9000: 'ExifVersion', |
| | 1051 | 0xA001: 'ColorSpace', |
| | 1052 | 0xA002: 'PixelXDimension', |
| | 1053 | 0xA003: 'PixelYDimension', |
| | 1054 | 0x9003: 'DateTimeOriginal', |
| | 1055 | 0x829A: 'ExposureTime', |
| | 1056 | 0x829D: 'FNumber', |
| | 1057 | 0x8827: 'ISOSpeedRatings', |
| | 1058 | 0x9201: 'ShutterSpeedValue', |
| | 1059 | 0x9202: 'ApertureValue' , |
| | 1060 | 0x9207: 'MeteringMode', |
| | 1061 | 0x9208: 'LightSource', |
| | 1062 | 0x9209: 'Flash', |
| | 1063 | 0xA402: 'ExposureMode', |
| | 1064 | 0xA403: 'WhiteBalance', |
| | 1065 | 0xA406: 'SceneCaptureType', |
| | 1066 | 0xA404: 'DigitalZoomRatio', |
| | 1067 | 0xA408: 'Contrast', |
| | 1068 | 0xA409: 'Saturation', |
| | 1069 | 0xA40A: 'Sharpness' |
| | 1070 | }, |
| | 1071 | gps : { |
| | 1072 | 0x0000: 'GPSVersionID', |
| | 1073 | 0x0001: 'GPSLatitudeRef', |
| | 1074 | 0x0002: 'GPSLatitude', |
| | 1075 | 0x0003: 'GPSLongitudeRef', |
| | 1076 | 0x0004: 'GPSLongitude' |
| | 1077 | } |
| | 1078 | }; |
| | 1079 | |
| | 1080 | tagDescs = { |
| | 1081 | 'ColorSpace': { |
| | 1082 | 1: 'sRGB', |
| | 1083 | 0: 'Uncalibrated' |
| | 1084 | }, |
| | 1085 | |
| | 1086 | 'MeteringMode': { |
| | 1087 | 0: 'Unknown', |
| | 1088 | 1: 'Average', |
| | 1089 | 2: 'CenterWeightedAverage', |
| | 1090 | 3: 'Spot', |
| | 1091 | 4: 'MultiSpot', |
| | 1092 | 5: 'Pattern', |
| | 1093 | 6: 'Partial', |
| | 1094 | 255: 'Other' |
| | 1095 | }, |
| | 1096 | |
| | 1097 | 'LightSource': { |
| | 1098 | 1: 'Daylight', |
| | 1099 | 2: 'Fliorescent', |
| | 1100 | 3: 'Tungsten', |
| | 1101 | 4: 'Flash', |
| | 1102 | 9: 'Fine weather', |
| | 1103 | 10: 'Cloudy weather', |
| | 1104 | 11: 'Shade', |
| | 1105 | 12: 'Daylight fluorescent (D 5700 - 7100K)', |
| | 1106 | 13: 'Day white fluorescent (N 4600 -5400K)', |
| | 1107 | 14: 'Cool white fluorescent (W 3900 - 4500K)', |
| | 1108 | 15: 'White fluorescent (WW 3200 - 3700K)', |
| | 1109 | 17: 'Standard light A', |
| | 1110 | 18: 'Standard light B', |
| | 1111 | 19: 'Standard light C', |
| | 1112 | 20: 'D55', |
| | 1113 | 21: 'D65', |
| | 1114 | 22: 'D75', |
| | 1115 | 23: 'D50', |
| | 1116 | 24: 'ISO studio tungsten', |
| | 1117 | 255: 'Other' |
| | 1118 | }, |
| | 1119 | |
| | 1120 | 'Flash': { |
| | 1121 | 0x0000: 'Flash did not fire.', |
| | 1122 | 0x0001: 'Flash fired.', |
| | 1123 | 0x0005: 'Strobe return light not detected.', |
| | 1124 | 0x0007: 'Strobe return light detected.', |
| | 1125 | 0x0009: 'Flash fired, compulsory flash mode', |
| | 1126 | 0x000D: 'Flash fired, compulsory flash mode, return light not detected', |
| | 1127 | 0x000F: 'Flash fired, compulsory flash mode, return light detected', |
| | 1128 | 0x0010: 'Flash did not fire, compulsory flash mode', |
| | 1129 | 0x0018: 'Flash did not fire, auto mode', |
| | 1130 | 0x0019: 'Flash fired, auto mode', |
| | 1131 | 0x001D: 'Flash fired, auto mode, return light not detected', |
| | 1132 | 0x001F: 'Flash fired, auto mode, return light detected', |
| | 1133 | 0x0020: 'No flash function', |
| | 1134 | 0x0041: 'Flash fired, red-eye reduction mode', |
| | 1135 | 0x0045: 'Flash fired, red-eye reduction mode, return light not detected', |
| | 1136 | 0x0047: 'Flash fired, red-eye reduction mode, return light detected', |
| | 1137 | 0x0049: 'Flash fired, compulsory flash mode, red-eye reduction mode', |
| | 1138 | 0x004D: 'Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected', |
| | 1139 | 0x004F: 'Flash fired, compulsory flash mode, red-eye reduction mode, return light detected', |
| | 1140 | 0x0059: 'Flash fired, auto mode, red-eye reduction mode', |
| | 1141 | 0x005D: 'Flash fired, auto mode, return light not detected, red-eye reduction mode', |
| | 1142 | 0x005F: 'Flash fired, auto mode, return light detected, red-eye reduction mode' |
| | 1143 | }, |
| | 1144 | |
| | 1145 | 'ExposureMode': { |
| | 1146 | 0: 'Auto exposure', |
| | 1147 | 1: 'Manual exposure', |
| | 1148 | 2: 'Auto bracket' |
| | 1149 | }, |
| | 1150 | |
| | 1151 | 'WhiteBalance': { |
| | 1152 | 0: 'Auto white balance', |
| | 1153 | 1: 'Manual white balance' |
| | 1154 | }, |
| | 1155 | |
| | 1156 | 'SceneCaptureType': { |
| | 1157 | 0: 'Standard', |
| | 1158 | 1: 'Landscape', |
| | 1159 | 2: 'Portrait', |
| | 1160 | 3: 'Night scene' |
| | 1161 | }, |
| | 1162 | |
| | 1163 | 'Contrast': { |
| | 1164 | 0: 'Normal', |
| | 1165 | 1: 'Soft', |
| | 1166 | 2: 'Hard' |
| | 1167 | }, |
| | 1168 | |
| | 1169 | 'Saturation': { |
| | 1170 | 0: 'Normal', |
| | 1171 | 1: 'Low saturation', |
| | 1172 | 2: 'High saturation' |
| | 1173 | }, |
| | 1174 | |
| | 1175 | 'Sharpness': { |
| | 1176 | 0: 'Normal', |
| | 1177 | 1: 'Soft', |
| | 1178 | 2: 'Hard' |
| | 1179 | }, |
| | 1180 | |
| | 1181 | // GPS related |
| | 1182 | 'GPSLatitudeRef': { |
| | 1183 | N: 'North latitude', |
| | 1184 | S: 'South latitude' |
| | 1185 | }, |
| | 1186 | |
| | 1187 | 'GPSLongitudeRef': { |
| | 1188 | E: 'East longitude', |
| | 1189 | W: 'West longitude' |
| | 1190 | } |
| | 1191 | }; |
| | 1192 | |
| | 1193 | function extractTags(IFD_offset, tags2extract) { |
| | 1194 | var length = data.SHORT(IFD_offset), i, ii, |
| | 1195 | tag, type, count, tagOffset, offset, value, values = [], hash = {}; |
| | 1196 | |
| | 1197 | for (i = 0; i < length; i++) { |
| | 1198 | // Set binary reader pointer to beginning of the next tag |
| | 1199 | offset = tagOffset = IFD_offset + 12 * i + 2; |
| | 1200 | |
| | 1201 | tag = tags2extract[data.SHORT(offset)]; |
| | 1202 | |
| | 1203 | if (tag === undef) { |
| | 1204 | continue; // Not the tag we requested |
| | 1205 | } |
| | 1206 | |
| | 1207 | type = data.SHORT(offset+=2); |
| | 1208 | count = data.LONG(offset+=2); |
| | 1209 | |
| | 1210 | offset += 4; |
| | 1211 | values = []; |
| | 1212 | |
| | 1213 | switch (type) { |
| | 1214 | case 1: // BYTE |
| | 1215 | case 7: // UNDEFINED |
| | 1216 | if (count > 4) { |
| | 1217 | offset = data.LONG(offset) + offsets.tiffHeader; |
| | 1218 | } |
| | 1219 | |
| | 1220 | for (ii = 0; ii < count; ii++) { |
| | 1221 | values[ii] = data.BYTE(offset + ii); |
| | 1222 | } |
| | 1223 | |
| | 1224 | break; |
| | 1225 | |
| | 1226 | case 2: // STRING |
| | 1227 | if (count > 4) { |
| | 1228 | offset = data.LONG(offset) + offsets.tiffHeader; |
| | 1229 | } |
| | 1230 | |
| | 1231 | hash[tag] = data.STRING(offset, count - 1); |
| | 1232 | |
| | 1233 | continue; |
| | 1234 | |
| | 1235 | case 3: // SHORT |
| | 1236 | if (count > 2) { |
| | 1237 | offset = data.LONG(offset) + offsets.tiffHeader; |
| | 1238 | } |
| | 1239 | |
| | 1240 | for (ii = 0; ii < count; ii++) { |
| | 1241 | values[ii] = data.SHORT(offset + ii*2); |
| | 1242 | } |
| | 1243 | |
| | 1244 | break; |
| | 1245 | |
| | 1246 | case 4: // LONG |
| | 1247 | if (count > 1) { |
| | 1248 | offset = data.LONG(offset) + offsets.tiffHeader; |
| | 1249 | } |
| | 1250 | |
| | 1251 | for (ii = 0; ii < count; ii++) { |
| | 1252 | values[ii] = data.LONG(offset + ii*4); |
| | 1253 | } |
| | 1254 | |
| | 1255 | break; |
| | 1256 | |
| | 1257 | case 5: // RATIONAL |
| | 1258 | offset = data.LONG(offset) + offsets.tiffHeader; |
| | 1259 | |
| | 1260 | for (ii = 0; ii < count; ii++) { |
| | 1261 | values[ii] = data.LONG(offset + ii*4) / data.LONG(offset + ii*4 + 4); |
| | 1262 | } |
| | 1263 | |
| | 1264 | break; |
| | 1265 | |
| | 1266 | case 9: // SLONG |
| | 1267 | offset = data.LONG(offset) + offsets.tiffHeader; |
| | 1268 | |
| | 1269 | for (ii = 0; ii < count; ii++) { |
| | 1270 | values[ii] = data.SLONG(offset + ii*4); |
| | 1271 | } |
| | 1272 | |
| | 1273 | break; |
| | 1274 | |
| | 1275 | case 10: // SRATIONAL |
| | 1276 | offset = data.LONG(offset) + offsets.tiffHeader; |
| | 1277 | |
| | 1278 | for (ii = 0; ii < count; ii++) { |
| | 1279 | values[ii] = data.SLONG(offset + ii*4) / data.SLONG(offset + ii*4 + 4); |
| | 1280 | } |
| | 1281 | |
| | 1282 | break; |
| | 1283 | |
| | 1284 | default: |
| | 1285 | continue; |
| | 1286 | } |
| | 1287 | |
| | 1288 | value = (count == 1 ? values[0] : values); |
| | 1289 | |
| | 1290 | if (tagDescs.hasOwnProperty(tag) && typeof value != 'object') { |
| | 1291 | hash[tag] = tagDescs[tag][value]; |
| | 1292 | } else { |
| | 1293 | hash[tag] = value; |
| | 1294 | } |
| | 1295 | } |
| | 1296 | |
| | 1297 | return hash; |
| | 1298 | } |
| | 1299 | |
| | 1300 | function getIFDOffsets() { |
| | 1301 | var Tiff = undef, idx = offsets.tiffHeader; |
| | 1302 | |
| | 1303 | // Set read order of multi-byte data |
| | 1304 | data.II(data.SHORT(idx) == 0x4949); |
| | 1305 | |
| | 1306 | // Check if always present bytes are indeed present |
| | 1307 | if (data.SHORT(idx+=2) !== 0x002A) { |
| | 1308 | return false; |
| | 1309 | } |
| | 1310 | |
| | 1311 | offsets['IFD0'] = offsets.tiffHeader + data.LONG(idx += 2); |
| | 1312 | Tiff = extractTags(offsets['IFD0'], tags.tiff); |
| | 1313 | |
| | 1314 | offsets['exifIFD'] = ('ExifIFDPointer' in Tiff ? offsets.tiffHeader + Tiff.ExifIFDPointer : undef); |
| | 1315 | offsets['gpsIFD'] = ('GPSInfoIFDPointer' in Tiff ? offsets.tiffHeader + Tiff.GPSInfoIFDPointer : undef); |
| | 1316 | |
| | 1317 | return true; |
| | 1318 | } |
| | 1319 | |
| | 1320 | // At the moment only setting of simple (LONG) values, that do not require offset recalculation, is supported |
| | 1321 | function setTag(ifd, tag, value) { |
| | 1322 | var offset, length, tagOffset, valueOffset = 0; |
| | 1323 | |
| | 1324 | // If tag name passed translate into hex key |
| | 1325 | if (typeof(tag) === 'string') { |
| | 1326 | var tmpTags = tags[ifd.toLowerCase()]; |
| | 1327 | for (hex in tmpTags) { |
| | 1328 | if (tmpTags[hex] === tag) { |
| | 1329 | tag = hex; |
| | 1330 | break; |
| | 1331 | } |
| | 1332 | } |
| | 1333 | } |
| | 1334 | offset = offsets[ifd.toLowerCase() + 'IFD']; |
| | 1335 | length = data.SHORT(offset); |
| | 1336 | |
| | 1337 | for (i = 0; i < length; i++) { |
| | 1338 | tagOffset = offset + 12 * i + 2; |
| | 1339 | |
| | 1340 | if (data.SHORT(tagOffset) == tag) { |
| | 1341 | valueOffset = tagOffset + 8; |
| | 1342 | break; |
| | 1343 | } |
| | 1344 | } |
| | 1345 | |
| | 1346 | if (!valueOffset) return false; |
| | 1347 | |
| | 1348 | |
| | 1349 | data.LONG(valueOffset, value); |
| | 1350 | return true; |
| | 1351 | } |
| | 1352 | |
| | 1353 | |
| | 1354 | // Public functions |
| | 1355 | return { |
| | 1356 | init: function(segment) { |
| | 1357 | // Reset internal data |
| | 1358 | offsets = { |
| | 1359 | tiffHeader: 10 |
| | 1360 | }; |
| | 1361 | |
| | 1362 | if (segment === undef || !segment.length) { |
| | 1363 | return false; |
| | 1364 | } |
| | 1365 | |
| | 1366 | data.init(segment); |
| | 1367 | |
| | 1368 | // Check if that's APP1 and that it has EXIF |
| | 1369 | if (data.SHORT(0) === 0xFFE1 && data.STRING(4, 5).toUpperCase() === "EXIF\0") { |
| | 1370 | return getIFDOffsets(); |
| | 1371 | } |
| | 1372 | return false; |
| | 1373 | }, |
| | 1374 | |
| | 1375 | EXIF: function() { |
| | 1376 | var Exif; |
| | 1377 | |
| | 1378 | // Populate EXIF hash |
| | 1379 | Exif = extractTags(offsets.exifIFD, tags.exif); |
| | 1380 | |
| | 1381 | // Fix formatting of some tags |
| | 1382 | if (Exif.ExifVersion && plupload.typeOf(Exif.ExifVersion) === 'array') { |
| | 1383 | for (var i = 0, exifVersion = ''; i < Exif.ExifVersion.length; i++) { |
| | 1384 | exifVersion += String.fromCharCode(Exif.ExifVersion[i]); |
| | 1385 | } |
| | 1386 | Exif.ExifVersion = exifVersion; |
| | 1387 | } |
| | 1388 | |
| | 1389 | return Exif; |
| | 1390 | }, |
| | 1391 | |
| | 1392 | GPS: function() { |
| | 1393 | var GPS; |
| | 1394 | |
| | 1395 | GPS = extractTags(offsets.gpsIFD, tags.gps); |
| | 1396 | |
| | 1397 | // iOS devices (and probably some others) do not put in GPSVersionID tag (why?..) |
| | 1398 | if (GPS.GPSVersionID) { |
| | 1399 | GPS.GPSVersionID = GPS.GPSVersionID.join('.'); |
| | 1400 | } |
| | 1401 | |
| | 1402 | return GPS; |
| | 1403 | }, |
| | 1404 | |
| | 1405 | setExif: function(tag, value) { |
| | 1406 | // Right now only setting of width/height is possible |
| | 1407 | if (tag !== 'PixelXDimension' && tag !== 'PixelYDimension') return false; |
| | 1408 | |
| | 1409 | return setTag('exif', tag, value); |
| | 1410 | }, |
| | 1411 | |
| | 1412 | |
| | 1413 | getBinary: function() { |
| | 1414 | return data.SEGMENT(); |
| | 1415 | } |
| | 1416 | }; |
| | 1417 | }; |
| | 1418 | })(window, document, plupload); |
| | 1419 | No newline at end of file |