91 lines
3.0 KiB
PHP
91 lines
3.0 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 make thumbnails of video files with ffmpeg
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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-ffmpeg
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* php5-gd
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*
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* Video support will depend on your ffmpeg.
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*/
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class VideoThumbnailsPlugin extends Plugin
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{
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/*
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* This function should only extract an image from the video stream
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* and disregard any cropping or scaling in the resulting file, as
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* that will be handled in the core thumbnail algorithm.
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*/
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public function onCreateFileImageThumbnailSource(File $file, &$imgPath, $media=null)
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{
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// The calling function might accidentally pass application/ogg videos.
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// If that's a problem, let's fix it in the calling function.
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if ($media !== 'video') {
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return true;
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}
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$movie = new ffmpeg_movie($file->getPath(), false);
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$frames = $movie->getFrameCount();
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if ($frames > 0) {
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$frame = $movie->getFrame(floor($frames/2));
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} else {
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$frame = $movie->getNextKeyFrame();
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}
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// We failed to get a frame.
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if (!$frame instanceof ffmpeg_frame) {
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return true;
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}
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// Let's save our frame to a temporary file. If we fail, remove it.
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$imgPath = tempnam(sys_get_temp_dir(), 'socialthumb');
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if (!imagejpeg($frame->toGDImage(), $imgPath)) {
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@unlink($imgPath);
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return true;
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}
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return false;
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}
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public function onPluginVersion(&$versions)
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{
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$versions[] = array('name' => 'Video Thumbnails',
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'version' => GNUSOCIAL_VERSION,
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'author' => 'Mikael Nordfeldth',
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'homepage' => 'https://www.gnu.org/software/social/',
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'rawdescription' =>
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// TRANS: Plugin description.
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_m('Video thumbnail preview support.'));
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return true;
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}
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}
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