[ATTACHMENTS] Even more further refactoring
Introduce Encoder plugins Instead of abstract upload and thumb modules Ported attachment routes. In v3 thumbnail depends on existing attachment so route updated accordingly.
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165
plugins/VideoEncoder/VideoEncoder.php
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165
plugins/VideoEncoder/VideoEncoder.php
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<?php
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social 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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// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Animated GIF resize support via PHP-FFMpeg
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*
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* @package GNUsocial
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*
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* @author Bruno Casteleiro <up201505347@fc.up.pt>
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* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*
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* @see http://www.gnu.org/software/social/
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*/
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namespace Plugin\VideoEncoder;
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use App\Core\Modules\Plugin;
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class VideoEncoder extends Plugin
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{
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const PLUGIN_VERSION = '0.1.0';
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/**
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* Handle resizing GIF files
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*/
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public function onStartResizeImageFile(
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ImageValidate $imagefile,
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string $outpath,
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array $box
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): bool {
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switch ($imagefile->mimetype) {
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case 'image/gif':
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// resize only if an animated GIF
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if ($imagefile->animated) {
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return !$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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/**
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* High quality GIF conversion.
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*
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* @see http://blog.pkh.me/p/21-high-quality-gif-with-ffmpeg.html
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* @see https://github.com/PHP-FFMpeg/PHP-FFMpeg/pull/592
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*/
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public function resizeImageFileAnimatedGif(ImageValidate $imagefile, string $outpath, array $box): bool
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{
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// Create FFMpeg instance
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// Need to explictly tell the drivers location or it won't find them
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$ffmpeg = FFMpeg\FFMpeg::create([
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'ffmpeg.binaries' => exec('which ffmpeg'),
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'ffprobe.binaries' => exec('which ffprobe'),
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]);
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// FFmpeg can't edit existing files in place,
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// generate temporary output file to avoid that
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$tempfile = new TemporaryFile('gs-outpath');
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// Generate palette file. FFmpeg explictly needs to be told the
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// extension for PNG files outputs
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$palette = $this->tempnam_sfx(sys_get_temp_dir(), '.png');
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// Build filters
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$filters = 'fps=30';
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$filters .= ",crop={$box['w']}:{$box['h']}:{$box['x']}:{$box['y']}";
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$filters .= ",scale={$box['width']}:{$box['height']}:flags=lanczos";
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// Assemble commands for palette generation
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$commands[] = $commands_2[] = '-f';
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$commands[] = $commands_2[] = 'gif';
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$commands[] = $commands_2[] = '-i';
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$commands[] = $commands_2[] = $imagefile->filepath;
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$commands[] = '-vf';
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$commands[] = $filters . ',palettegen';
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$commands[] = '-y';
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$commands[] = $palette;
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// Assemble commands for GIF generation
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$commands_2[] = '-i';
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$commands_2[] = $palette;
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$commands_2[] = '-lavfi';
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$commands_2[] = $filters . ' [x]; [x][1:v] paletteuse';
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$commands_2[] = '-f';
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$commands_2[] = 'gif';
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$commands_2[] = '-y';
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$commands_2[] = $tempfile->getRealPath();
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$success = true;
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// Generate the palette image
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try {
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$ffmpeg->getFFMpegDriver()->command($commands);
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} catch (Exception $e) {
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$this->log(LOG_ERR, 'Unable to generate the palette image');
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$success = false;
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}
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// Generate GIF
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try {
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if ($success) {
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$ffmpeg->getFFMpegDriver()->command($commands_2);
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}
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} catch (Exception $e) {
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$this->log(LOG_ERR, 'Unable to generate the GIF image');
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$success = false;
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}
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if ($success) {
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try {
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$tempfile->commit($outpath);
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} catch (TemporaryFileException $e) {
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$this->log(LOG_ERR, 'Unable to save the GIF image');
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$success = false;
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}
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}
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@unlink($palette);
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return $success;
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}
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/**
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* Suffix version of tempnam.
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* Courtesy of tomas at slax dot org:
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*
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* @see https://www.php.net/manual/en/function.tempnam.php#98232
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*/
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private function tempnam_sfx(string $dir, string $suffix): string
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{
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do {
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$file = $dir . '/' . mt_rand() . $suffix;
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$fp = @fopen($file, 'x');
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} while (!$fp);
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fclose($fp);
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return $file;
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}
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public function onPluginVersion(array &$versions): bool
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{
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$versions[] = ['name' => 'FFmpeg',
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'version' => self::PLUGIN_VERSION,
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'author' => 'Bruno Casteleiro',
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'homepage' => 'https://notabug.org/diogo/gnu-social/src/nightly/plugins/FFmpeg',
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'rawdescription' => // TRANS: Plugin description.
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_m('Use PHP-FFMpeg for resizing animated GIFs'), ];
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return true;
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}
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}
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