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