671 lines
20 KiB
Plaintext
671 lines
20 KiB
Plaintext
<?php
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/*
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2007 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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GalleryCoreApi::requireOnce('modules/core/classes/GalleryToolkit.class');
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GalleryCoreApi::requireOnce('modules/imagemagick/classes/ImageMagickToolkitHelper.class');
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/**
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* A ImageMagick version of GalleryToolkit
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* @package ImageMagick
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* @subpackage Classes
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* @author Vallimar <vallimar@sexorcisto.net>
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* @author Bharat Mediratta <bharat@menalto.com>
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* @version $Revision: 15513 $
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*/
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class ImageMagickToolkit extends GalleryToolkit {
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/**
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* @see GalleryToolkit::getProperty
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*/
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function getProperty($mimeType, $propertyName, $sourceFilename) {
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switch($propertyName) {
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case 'dimensions':
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list ($ret, $width, $height) = $this->_getImageDimensions($mimeType, $sourceFilename);
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if ($ret) {
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return array($ret, null);
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}
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$results = array((int)$width, (int)$height);
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break;
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case 'page-count':
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list ($ret, $count) = $this->_getPageCount($sourceFilename, $mimeType);
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if ($ret) {
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return array($ret, null);
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}
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$results = array($count);
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break;
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case 'colorspace':
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list ($ret, $colorspace) = $this->_getColorspace($sourceFilename);
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if ($ret) {
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return array($ret, null);
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}
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$results = array($colorspace);
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break;
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default:
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return array(GalleryCoreApi::error(ERROR_UNIMPLEMENTED), null);
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}
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return array(null, $results);
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}
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/**
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* @see GalleryToolkit::performOperation
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*/
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function performOperation($mimeType, $operationName, $sourceFilename,
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$destFilename, $parameters, $context=array()) {
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global $gallery;
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static $convertOps = array('thumbnail', 'scale', 'resize', 'rotate',
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'crop', 'convert-to-image/jpeg', 'select-page');
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/* Check context for any operations that have been queued up */
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$outputMimeType = $mimeType;
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if (isset($context['imagemagick.transform'])) {
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$transform = $context['imagemagick.transform'];
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$mimeType = $context['imagemagick.mime'];
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unset($context['imagemagick.transform']);
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unset($context['imagemagick.mime']);
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} else {
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$transform = array();
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}
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if (isset($context['width'])) {
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$width = $context['width'];
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$height = $context['height'];
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}
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/* Use context look-ahead to see if we can queue up parameters to use later */
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$queueIt = in_array($operationName, $convertOps) &&
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isset($context['next.toolkit']) && $context['next.toolkit'] == $this &&
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in_array($context['next.operation'], $convertOps);
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/*
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* Some versions of ImageMagick (6.1.6) are broken if you try to do a -crop followed
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* by a -geometry, so if we look ahead and see a -geometry and we have a -crop in our
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* queue, then we can't queue the geometry.
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*/
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if ($queueIt &&
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in_array($context['next.operation'], array('thumbnail', 'scale', 'resize')) &&
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($operationName == 'crop' || in_array('-crop', $transform))) {
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$queueIt = false;
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}
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$usePercent = in_array($operationName, array('thumbnail', 'scale', 'resize'))
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&& (substr($parameters[0], -1) == '%'
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|| (isset($parameters[1]) && substr($parameters[1], -1) == '%'));
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if (!isset($width) && ($queueIt || $usePercent
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|| in_array($operationName, array('thumbnail', 'crop', 'composite')))) {
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list ($ret, $width, $height) = $this->_getImageDimensions($mimeType, $sourceFilename);
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if ($ret) {
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return array($ret, null, null);
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}
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}
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if ($usePercent) {
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/* Convert percentages to real image dimensions */
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if (substr($parameters[0], -1) == '%') {
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$parameters[0] = (int)round($width * rtrim($parameters[0], '%') / 100);
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}
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if (isset($parameters[1]) && substr($parameters[1], -1) == '%') {
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$parameters[1] = (int)round($height * rtrim($parameters[1], '%') / 100);
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}
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}
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if (preg_match('{^convert-to-(image/.*)$}', $operationName, $matches)) {
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$cmd = 'convert';
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$outputMimeType = $matches[1];
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} else switch($operationName) {
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case 'thumbnail':
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$cmd = 'convert';
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/* Don't enlarge images for a thumbnail */
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if ($width > $parameters[0] || $height > $parameters[0]) {
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$this->_addResizeParam($transform, $parameters[0]);
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list ($width, $height) =
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GalleryUtilities::scaleDimensionsToFit($width, $height, $parameters[0]);
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}
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/* Strip metadata to make derivative files smaller.. */
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list ($ret, $removeMetaDataSwitch) =
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GalleryCoreApi::getPluginParameter('module', 'imagemagick', 'removeMetaDataSwitch');
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if ($ret) {
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return array($ret, null, null);
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}
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if (!empty($removeMetaDataSwitch)) {
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$transform = array_merge($transform, explode('|', $removeMetaDataSwitch));
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}
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break;
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case 'scale':
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$cmd = 'convert';
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$targetHeight = empty($parameters[1]) ? $parameters[0] : $parameters[1];
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$this->_addResizeParam($transform, $parameters[0], $targetHeight);
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if (isset($width)) {
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list ($width, $height) = GalleryUtilities::scaleDimensionsToFit(
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$width, $height, $parameters[0], $targetHeight);
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}
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break;
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case 'resize':
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$cmd = 'convert';
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$this->_addResizeParam($transform, $parameters[0], $parameters[1]);
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if (isset($width)) {
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list ($width, $height) = GalleryUtilities::scaleDimensionsToFit(
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$width, $height, $parameters[0], $parameters[1]);
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}
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break;
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case 'rotate':
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$cmd = 'convert';
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if (is_int($i = array_search('-size', $transform))) {
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array_splice($transform, $i, 2);
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}
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$transform = array_merge($transform, array('-rotate', (string)$parameters[0]));
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if (isset($width) && ($parameters[0] == 90 || $parameters[0] == -90)) {
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$tmp = $width;
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$width = $height;
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$height = $tmp;
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}
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break;
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case 'crop':
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/* source dimensions are required to convert from percentages to pixels */
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$pixelX = round($parameters[0] / 100 * $width);
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$pixelY = round($parameters[1] / 100 * $height);
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$width = round($parameters[2] / 100 * $width);
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$height = round($parameters[3] / 100 * $height);
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$cmd = 'convert';
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if (is_int($i = array_search('-size', $transform))) {
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array_splice($transform, $i, 2);
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}
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$transform = array_merge($transform,
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array('-crop', sprintf('%sx%s+%s+%s',
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$width, $height, $pixelX, $pixelY)));
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break;
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case 'select-page':
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$cmd = 'convert';
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$transform['page'] = $parameters[0];
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break;
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case 'composite':
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list ($ret, $cmd) =
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GalleryCoreApi::getPluginParameter('module', 'imagemagick', 'compositeCmd');
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if ($ret) {
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return array($ret, null, null);
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}
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if (empty($cmd)) {
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$cmd = 'composite';
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}
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$compositeOverlayPath = $parameters[0];
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$compositeOverlayMimeType = $parameters[1];
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$compositeWidth = $parameters[2];
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$compositeHeight = $parameters[3];
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$compositeAlignmentType = $parameters[4];
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$compositeAlignX = $parameters[5];
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$compositeAlignY = $parameters[6];
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switch ($compositeAlignmentType) {
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case 'top-left': /* Top - Left */
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$compositeAlignX = 0;
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$compositeAlignY = 0;
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break;
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case 'top': /* Top */
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$compositeAlignX = 50;
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$compositeAlignY = 0;
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break;
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case 'top-right': /* Top - Right */
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$compositeAlignX = 100;
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$compositeAlignY = 0;
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break;
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case 'left': /* Left */
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$compositeAlignX = 0;
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$compositeAlignY = 50;
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break;
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case 'center': /* Center */
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$compositeAlignX = 50;
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$compositeAlignY = 50;
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break;
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case 'right': /* Right */
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$compositeAlignX = 100;
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$compositeAlignY = 50;
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break;
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case 'bottom-left': /* Bottom - Left */
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$compositeAlignX = 0;
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$compositeAlignY = 100;
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break;
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case 'bottom': /* Bottom */
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$compositeAlignX = 50;
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$compositeAlignY = 100;
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break;
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case 'bottom-right': /* Bottom Right */
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$compositeAlignX = 100;
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$compositeAlignY = 100;
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break;
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case 'manual': /* Manual placement */
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/* Use the alignments we received */
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break;
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default:
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return array(GalleryCoreApi::error(ERROR_BAD_PARAMETER, __FILE__, __LINE__,
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"Unknown composite alignment type: $compositeAlignmentType"),
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null, null);
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}
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/* Convert from percentages to pixels */
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$compositeAlignX = (int)($compositeAlignX / 100 * ($width - $compositeWidth));
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$compositeAlignY = (int)($compositeAlignY / 100 * ($height - $compositeHeight));
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/* Clip to our bounding box */
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$compositeAlignX = min($compositeAlignX, $width - $compositeWidth);
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$compositeAlignX = max(0, $compositeAlignX);
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$compositeAlignY = min($compositeAlignY, $height - $compositeHeight);
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$compositeAlignY = max(0, $compositeAlignY);
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$dataDir = $gallery->getConfig('data.gallery.base');
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$transform = array('-geometry', '+' . $compositeAlignX . '+' . $compositeAlignY,
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$dataDir . $compositeOverlayPath);
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break;
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case 'compress':
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$targetSize = $parameters[0];
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$platform =& $gallery->getPlatform();
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$fileSize = $platform->filesize($sourceFilename) >> 10; /* Size in KB */
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if ($fileSize <= $targetSize) {
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break;
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}
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/* Use module quality parameter as initial guess */
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list ($ret, $quality) =
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GalleryCoreApi::getPluginParameter('module', 'imagemagick', 'jpegQuality');
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if ($ret) {
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return array($ret, null, null);
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}
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$maxQuality = 100;
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$minQuality = 5;
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do {
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$ret = $this->_transformImage($mimeType, 'convert', array(), $sourceFilename,
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$destFilename, $outputMimeType, $quality);
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if ($ret) {
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return array($ret, null, null);
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}
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clearstatcache();
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$fileSize = $platform->filesize($destFilename) >> 10;
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if ($fileSize >= $targetSize) {
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$maxQuality = $quality;
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}
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if ($fileSize <= $targetSize) {
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$minQuality = $quality;
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}
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$quality = round(($minQuality + $maxQuality) / 2);
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} while ($maxQuality - $minQuality > 2
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&& abs(($fileSize - $targetSize) / $targetSize) > 0.02);
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return array(null, $outputMimeType, $context);
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default:
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return array(GalleryCoreApi::error(ERROR_UNSUPPORTED_OPERATION, __FILE__, __LINE__,
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"$operationName $outputMimeType"), null, null);
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}
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if (isset($width)) {
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$context['width'] = $width;
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$context['height'] = $height;
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}
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if ($queueIt) {
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$context['imagemagick.transform'] = $transform;
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$context['imagemagick.mime'] = $mimeType;
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if ($sourceFilename != $destFilename) {
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$platform =& $gallery->getPlatform();
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if (!$platform->copy($sourceFilename, $destFilename)) {
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return array(GalleryCoreApi::error(ERROR_PLATFORM_FAILURE), null, null);
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}
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}
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return array(null, $outputMimeType, $context);
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}
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if ($outputMimeType == $mimeType && empty($transform)) {
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/* Just copy the source to the destination */
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if ($sourceFilename != $destFilename) {
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$platform =& $gallery->getPlatform();
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if (!$platform->copy($sourceFilename, $destFilename)) {
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return array(GalleryCoreApi::error(ERROR_PLATFORM_FAILURE), null, null);
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}
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}
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} else {
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$ret = $this->_transformImage($mimeType, $cmd, $transform,
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$sourceFilename, $destFilename, $outputMimeType);
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if ($ret) {
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return array($ret, null, null);
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}
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}
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return array(null, $outputMimeType, $context);
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}
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/**
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* @see GalleryToolkit::getImageDimensions
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*/
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function _getImageDimensions($mimeType, $filename) {
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global $gallery;
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/*
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* Run it through PHP first, it's faster and more portable. If it runs afoul of
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* open_basedir it'll return false and we can try ImageMagick.
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*/
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$platform =& $gallery->getPlatform();
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$results = $platform->getimagesize($filename);
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if (($results != false) &&
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(($results[0] > 1) && ($results[1] > 1))) {
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return array(null, $results[0], $results[1]);
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}
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list ($ret, $cmd) = ImageMagickToolkitHelper::getCommand('identify');
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if ($ret) {
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return array($ret, 0, 0);
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}
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$oldCwd = $platform->getcwd();
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$platform->chdir($gallery->getConfig('data.gallery.tmp'));
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list ($success, $output) = $platform->exec(array(array_merge($cmd, array($filename))));
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if (!$success) {
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$platform->chdir($oldCwd);
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return array(GalleryCoreApi::error(ERROR_TOOLKIT_FAILURE), 0, 0);
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}
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$platform->chdir($oldCwd);
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foreach ($output as $line) {
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if (ereg('([0-9]+)x([0-9]+)', $line, $regs)) {
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return array(null, $regs[1], $regs[2]);
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}
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}
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return array(GalleryCoreApi::error(ERROR_TOOLKIT_FAILURE), null, null);
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}
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/**
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* Call 'identify' and count the pages
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* @access private
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*/
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function _getPageCount($filename, $mimeType) {
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global $gallery;
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$platform =& $gallery->getPlatform();
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list ($ret, $cmd) = ImageMagickToolkitHelper::getCommand('identify');
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if ($ret) {
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return array($ret, null);
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}
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$oldCwd = $platform->getcwd();
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$platform->chdir($gallery->getConfig('data.gallery.tmp'));
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if ($mimeType == 'application/photoshop') {
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/* Identify only shows the number of photoshop layers in verbose output */
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list ($success, $output) =
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$platform->exec(array(array_merge($cmd, array('-verbose', $filename))));
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} else {
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list ($success, $output) = $platform->exec(array(array_merge($cmd, array($filename))));
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}
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$platform->chdir($oldCwd);
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if (!$success) {
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return array(GalleryCoreApi::error(ERROR_TOOLKIT_FAILURE), null);
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}
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$count = 0;
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if ($mimeType == 'application/photoshop') {
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foreach ($output as $line) {
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if (preg_match('/^\s*Scene: \d+ of (\d+)/', $line, $matches)) {
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$count = $matches[1];
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break;
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}
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}
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} else {
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$match = '/' . preg_quote(basename($filename)) . '[[ =]/';
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foreach ($output as $line) {
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if (preg_match($match, $line)) {
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$count++;
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}
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}
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}
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return array(null, $count);
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}
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/**
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* Call 'identify' to determine the image colorspace
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* @access private
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*/
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function _getColorspace($filename) {
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global $gallery;
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$platform =& $gallery->getPlatform();
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list ($ret, $cmd) = ImageMagickToolkitHelper::getCommand('identify');
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if ($ret) {
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return array($ret, null);
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}
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list ($success, $output) =
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$platform->exec(array(array_merge($cmd, array('-format', '%r', $filename))));
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if (!$success || empty($output)) {
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return array(GalleryCoreApi::error(ERROR_TOOLKIT_FAILURE), null);
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}
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foreach (array('RGB', 'CMYK') as $colorspace) {
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if (strpos($output[0], $colorspace) !== false) {
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return array(null, $colorspace);
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}
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}
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return array(null, 'unknown');
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}
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/**
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* Do the given transform on the source image
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*
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* @param string $mimeType source mime type
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* @param string $cmd the command to execute
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* @param array $args
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* @param string $sourceFilename the path to a source file
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* @param string $destFilename the path to a destination file
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* @param string $outputMimeType
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* @param string $jpegQuality (optional)
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* @return object GalleryStatus a status code
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* @access private
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*/
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function _transformImage($mimeType, $cmd, $args, $sourceFilename, $destFilename,
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$outputMimeType, $jpegQuality=null) {
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global $gallery;
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/* Get a temp file name and figure out our convert-from-pnm command */
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$tmpDir = $gallery->getConfig('data.gallery.tmp');
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$platform =& $gallery->getPlatform();
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$tmpFilename = $platform->tempnam($tmpDir, 'imgk_');
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if (empty($tmpFilename)) {
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/* This can happen if the $tmpDir path is bad */
|
|
return GalleryCoreApi::error(ERROR_BAD_PATH);
|
|
}
|
|
|
|
list ($ret, $command) = ImageMagickToolkitHelper::getCommand($cmd);
|
|
if ($ret) {
|
|
@$platform->unlink($tmpFilename);
|
|
return $ret;
|
|
}
|
|
if (!isset($jpegQuality)) {
|
|
list ($ret, $jpegQuality) =
|
|
GalleryCoreApi::getPluginParameter('module', 'imagemagick', 'jpegQuality');
|
|
if ($ret) {
|
|
@$platform->unlink($tmpFilename);
|
|
return $ret;
|
|
}
|
|
}
|
|
|
|
switch ($outputMimeType) {
|
|
case 'image/jpeg' :
|
|
$command[] = '-quality';
|
|
$command[] = $jpegQuality;
|
|
break;
|
|
|
|
case 'image/png':
|
|
/*
|
|
* ImageMagick uses (quality/10) as the compression level and
|
|
* (quality%10) as a filter type. For now, use adaptive filtering
|
|
* (5) since it's their default filter (default is normally 75)
|
|
* but preserve the compression level.
|
|
*
|
|
* ref: http://www.imagemagick.org/www/ImageMagick.html
|
|
*/
|
|
$command[] = '-quality';
|
|
$command[] = (int)($jpegQuality / 10) * 10 + 5;
|
|
break;
|
|
}
|
|
|
|
switch ($mimeType) {
|
|
case 'image/gif':
|
|
/* In case it's an animated gif.. */
|
|
if ($cmd == 'convert') {
|
|
$command[] = '-coalesce';
|
|
$command[] = '%s';
|
|
$args[] = '-deconstruct';
|
|
}
|
|
break;
|
|
|
|
case 'image/tiff':
|
|
case 'application/pdf':
|
|
case 'application/postscript':
|
|
case 'application/photoshop':
|
|
/*
|
|
* PDF/postscript can be multi-paged, TIFF multi-scened, PSD multi-layered;
|
|
* Grab the first page/scene/layer unless a specific one is requested
|
|
*/
|
|
$page = 0;
|
|
if (isset($args['page'])) {
|
|
$page = $args['page'] - 1;
|
|
unset($args['page']);
|
|
}
|
|
$sourceFilename .= '[' . $page . ']';
|
|
break;
|
|
|
|
case 'image/jpeg-cmyk':
|
|
case 'image/tiff-cmyk':
|
|
case 'application/photoshop-cmyk':
|
|
if (substr($outputMimeType, -5) != '-cmyk') {
|
|
$command[] = '-colorspace';
|
|
$command[] = 'RGB';
|
|
}
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Prepare our command. If one of the arguments is %s, then put the source file path
|
|
* there, else put it at the end.
|
|
*/
|
|
if (!empty($args)) {
|
|
$command = array_merge($command, $args);
|
|
}
|
|
$replaced = false;
|
|
for ($i = 0; $i < sizeof($command); $i++) {
|
|
if ($command[$i] == '%s') {
|
|
$command[$i] = $sourceFilename;
|
|
$replaced = true;
|
|
}
|
|
}
|
|
if (!$replaced) {
|
|
$command[] = $sourceFilename;
|
|
}
|
|
|
|
if ($mimeType == $outputMimeType) {
|
|
$command[] = $tmpFilename;
|
|
} else {
|
|
if (preg_match('{^image/(.*)$}', $outputMimeType, $matches)) {
|
|
$command[] = sprintf("%s:%s", $matches[1], $tmpFilename);
|
|
} else {
|
|
/* Don't know this type! */
|
|
@$platform->unlink($tmpFilename);
|
|
return GalleryCoreApi::error(ERROR_TOOLKIT_FAILURE, __FILE__, __LINE__,
|
|
"Can't convert to unknown mime type: $outputMimeType");
|
|
}
|
|
}
|
|
|
|
$oldCwd = $platform->getcwd();
|
|
$platform->chdir($gallery->getConfig('data.gallery.tmp'));
|
|
list ($success, $output) = $platform->exec(array($command));
|
|
if (!$success) {
|
|
@$platform->unlink($tmpFilename);
|
|
$platform->chdir($oldCwd);
|
|
return GalleryCoreApi::error(ERROR_TOOLKIT_FAILURE);
|
|
}
|
|
$platform->chdir($oldCwd);
|
|
|
|
$success = $platform->rename($tmpFilename, $destFilename);
|
|
if (!$success) {
|
|
@$platform->unlink($tmpFilename);
|
|
return GalleryCoreApi::error(ERROR_PLATFORM_FAILURE, __FILE__, __LINE__,
|
|
"Failed renaming $tmpFilename -> $destFilename");
|
|
}
|
|
|
|
/* ImageMagick tends to write output files with 600 permission */
|
|
$platform->chmod($destFilename);
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Return the full path to the ImageMagick command
|
|
* @param string $cmd an ImageMagick command (eg. "convert")
|
|
* @return mixed string/error?
|
|
* @access private
|
|
*/
|
|
function _imageMagickCmd($cmd) {
|
|
list ($ret, $imageMagickPath) =
|
|
GalleryCoreApi::getPluginParameter('module', 'imagemagick', 'path');
|
|
if ($ret) {
|
|
return $ret;
|
|
}
|
|
|
|
return $imageMagickPath . $cmd;
|
|
}
|
|
|
|
/**
|
|
* Add parameters for resizing image.
|
|
* -size produces faster results when only resizing; incorrect results when
|
|
* combined with other operations like -crop
|
|
*
|
|
* @param array $transform parameters
|
|
* @param int $w target size
|
|
* @param int $h target height (optional)
|
|
* @access private
|
|
*/
|
|
function _addResizeParam(&$transform, $w, $h=null) {
|
|
$size = isset($h) ? ($w . 'x' . $h) : ($w . 'x' . $w);
|
|
$transform = array_merge($transform, empty($transform)
|
|
? array('-size', $size, '-geometry', $size)
|
|
: array('-geometry', $size));
|
|
}
|
|
}
|
|
?>
|