139 lines
5.0 KiB
PHP
139 lines
5.0 KiB
PHP
<?php
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/**
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* GNU social - a federating social network
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*
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* Plugin to handle more kinds of image formats thanks to ImageMagick
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at 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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Plugin
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* @package GNUsocial
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* @author Mikael Nordfeldth <mmn@hethane.se>
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* @copyright 2014 Free Software Foundation http://fsf.org
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link https://www.gnu.org/software/social/
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*/
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if (!defined('GNUSOCIAL')) { exit(1); }
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/*
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* Dependencies:
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* php5-imagick
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*
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* Provides:
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* Animated GIF resize support
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*
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* Comments:
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* Animated GIF resize requires setting $config['thumbnail']['animated'] = true;
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*
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* Bugs:
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* Not even ImageMagick is very good at resizing animated GIFs.
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* We are not infinitely fast, so resizing animated GIFs is _not_ recommended.
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*/
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class ImageMagickPlugin extends Plugin
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{
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public $preview_imageformat = 'PNG'; // Image format strings: http://www.imagemagick.org/script/formats.php#supported
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/**
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* @param ImageFile $file An ImageFile object we're getting metadata for
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* @param array $info The response from getimagesize()
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*/
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public function onFillImageFileMetadata(ImageFile $imagefile) {
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if (is_null($imagefile->animated) && $imagefile->mimetype === 'image/gif') {
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$magick = new Imagick($imagefile->filepath);
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$magick = $magick->coalesceImages();
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$imagefile->animated = $magick->getNumberImages()>1;
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}
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return true;
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}
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public function onStartResizeImageFile(ImageFile $imagefile, $outpath, array $box)
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{
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switch ($imagefile->mimetype) {
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case 'image/gif':
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// If GIF, then only for animated gifs! (and only if we really want to resize the animation!)
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if ($imagefile->animated && common_config('thumbnail', 'animated')) {
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return $this->resizeImageFileAnimatedGif($imagefile, $outpath, $box);
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}
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break;
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}
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return true;
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}
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protected function resizeImageFileAnimatedGif(ImageFile $imagefile, $outpath, array $box)
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{
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$magick = new Imagick($imagefile->filepath);
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$magick = $magick->coalesceImages();
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$magick->setIteratorIndex(0);
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do {
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$magick->cropImage($box['w'], $box['h'], $box['x'], $box['y']);
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$magick->thumbnailImage($box['width'], $box['height']);
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$magick->setImagePage($box['width'], $box['height'], 0, 0);
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} while ($magick->nextImage());
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$magick = $magick->deconstructImages();
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// $magick->writeImages($outpath, true); did not work, had to use filehandle
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// There's been bugs for writeImages in php5-imagick before, probably now too
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$fh = fopen($outpath, 'w+');
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$success = $magick->writeImagesFile($fh);
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fclose($fh);
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$magick->destroy();
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return !$success;
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}
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public function onCreateFileImageThumbnailSource(File $file, &$imgPath, $media=null)
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{
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switch ($file->mimetype) {
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case 'image/svg+xml':
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// Let's save our frame to a temporary file. If we fail, remove it.
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$imgPath = tempnam(sys_get_temp_dir(), 'socialthumb-');
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if (!$this->createImagePreview($file, $imgPath)) {
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common_debug('Could not create ImageMagick preview of File id=='.$file->id);
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@unlink($imgPath);
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$imgPath = null;
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return true;
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}
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return false;
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}
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return true;
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}
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protected function createImagePreview(File $file, $outpath)
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{
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$magick = new Imagick($file->getPath());
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$magick->setImageFormat($this->preview_imageformat);
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$magick->writeImage($outpath);
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$magick->destroy();
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return getimagesize($outpath); // Verify that we wrote an understandable image.
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}
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public function onPluginVersion(&$versions)
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{
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$versions[] = array('name' => 'ImageMagick',
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'version' => GNUSOCIAL_VERSION,
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'author' => 'Mikael Nordfeldth',
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'homepage' => 'http://gnu.io/social',
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'rawdescription' =>
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// TRANS: Plugin description.
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_m('Use ImageMagick for some more image support.'));
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return true;
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}
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}
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