Summary Table

Categories	Total Count
PII	0
URL	0
DNS	0
EKL	0
IP	0
PORT	0
VsID	0
CF	0
AI	0
VPD	0
PL	0
Other	0

File Content

define(['angular', 'app'], function (angular, app) {
'use strict';

app.service('imageRotationService', function ($q) {
return {
// Function courtesy: https://stackoverflow.com/questions/7584794/accessing-jpeg-exif-rotation-data-in-javascript-on-the-client-side
// This specific function has not been unit tested, but the expected results are unit tested with getRotateClass
getOrientation: function (file, callback) {
var reader = new FileReader();
reader.onload = function (e) {

var view = new DataView(e.target.result);
if (view.getUint16(0, false) != 0xFFD8) return callback(-2);
var length = view.byteLength, offset = 2;
while (offset < length) {
var marker = view.getUint16(offset, false);
offset += 2;
if (marker == 0xFFE1) {
if (view.getUint32(offset += 2, false) != 0x45786966) return callback(-1);
var little = view.getUint16(offset += 6, false) == 0x4949;
offset += view.getUint32(offset + 4, little);
var tags = view.getUint16(offset, little);
offset += 2;
for (var i = 0; i < tags; i++)
if (view.getUint16(offset + (i * 12), little) == 0x0112)
return callback(view.getUint16(offset + (i * 12) + 8, little));
}
else if ((marker & 0xFF00) != 0xFF00) break;
else offset += view.getUint16(offset, false);
}
return callback(-1);
};
reader.readAsArrayBuffer(file);
},
getRotateClass: function (file) {
var deferred = $q.defer();

this.getOrientation(file, function (orientation) {
var rotateClass = '';

switch (orientation) {
case 3:
rotateClass = 'rotate-180';
break;
case 6:
rotateClass = 'rotate-90-right';
break;
case 8:
rotateClass = 'rotate-90-left';
break;
};

deferred.resolve(rotateClass);
});

return deferred.promise;
}
}
});
});