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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2013 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
class autorotate {
static function rotate_item($item) {
require_once(MODPATH . 'autorotate/lib/pel/PelDataWindow.php');
require_once(MODPATH . 'autorotate/lib/pel/PelJpeg.php');
require_once(MODPATH . 'autorotate/lib/pel/PelTiff.php');
// Only try to rotate photos based on EXIF
if ($item->is_photo() && $item->mime_type == "image/jpeg") {
require_once(MODPATH . "exif/lib/exif.php");
$exif_raw = read_exif_data_raw($item->file_path(), false);
if (isset($exif_raw['ValidEXIFData'])) {
$orientation = $exif_raw["IFD0"]["Orientation"];
$degrees = 0;
if ($orientation == '3: Upside-down') {
$degrees = 180;
}
else if ($orientation == '8: 90 deg CW') {
$degrees = -90;
}
else if ($orientation == '6: 90 deg CCW') {
$degrees = 90;
}
if($degrees) {
$tmpfile = tempnam(TMPPATH, "rotate");
gallery_graphics::rotate($item->file_path(), $tmpfile, array("degrees" => $degrees));
// Update EXIF info
$data = new PelDataWindow(file_get_contents($tmpfile));
if (PelJpeg::isValid($data)) {
$jpeg = $file = new PelJpeg();
$jpeg->load($data);
$exif = $jpeg->getExif();
if($exif !== null) {
$tiff = $exif->getTiff();
$ifd0 = $tiff->getIfd();
$orientation = $ifd0->getEntry(PelTag::ORIENTATION);
$orientation->setValue(1);
file_put_contents($tmpfile, $file->getBytes());
}
}
$item->set_data_file($tmpfile);
$item->save();
unlink($tmpfile);
}
}
}
return;
}
}
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