forked from GNUsocial/gnu-social
Diogo Peralta Cordeiro
2f137f8b44
Introduce Encoder plugins Instead of abstract upload and thumb modules Ported attachment routes. In v3 thumbnail depends on existing attachment so route updated accordingly.
166 lines
5.3 KiB
PHP
166 lines
5.3 KiB
PHP
<?php
|
|
// This file is part of GNU social - https://www.gnu.org/software/social
|
|
//
|
|
// GNU social is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// GNU social is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
/**
|
|
* Animated GIF resize support via PHP-FFMpeg
|
|
*
|
|
* @package GNUsocial
|
|
*
|
|
* @author Bruno Casteleiro <up201505347@fc.up.pt>
|
|
* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
|
|
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
|
|
*
|
|
* @see http://www.gnu.org/software/social/
|
|
*/
|
|
|
|
namespace Plugin\VideoEncoder;
|
|
|
|
use App\Core\Modules\Plugin;
|
|
|
|
class VideoEncoder extends Plugin
|
|
{
|
|
const PLUGIN_VERSION = '0.1.0';
|
|
|
|
/**
|
|
* Handle resizing GIF files
|
|
*/
|
|
public function onStartResizeImageFile(
|
|
ImageValidate $imagefile,
|
|
string $outpath,
|
|
array $box
|
|
): bool {
|
|
switch ($imagefile->mimetype) {
|
|
case 'image/gif':
|
|
// resize only if an animated GIF
|
|
if ($imagefile->animated) {
|
|
return !$this->resizeImageFileAnimatedGif($imagefile, $outpath, $box);
|
|
}
|
|
break;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* High quality GIF conversion.
|
|
*
|
|
* @see http://blog.pkh.me/p/21-high-quality-gif-with-ffmpeg.html
|
|
* @see https://github.com/PHP-FFMpeg/PHP-FFMpeg/pull/592
|
|
*/
|
|
public function resizeImageFileAnimatedGif(ImageValidate $imagefile, string $outpath, array $box): bool
|
|
{
|
|
// Create FFMpeg instance
|
|
// Need to explictly tell the drivers location or it won't find them
|
|
$ffmpeg = FFMpeg\FFMpeg::create([
|
|
'ffmpeg.binaries' => exec('which ffmpeg'),
|
|
'ffprobe.binaries' => exec('which ffprobe'),
|
|
]);
|
|
|
|
// FFmpeg can't edit existing files in place,
|
|
// generate temporary output file to avoid that
|
|
$tempfile = new TemporaryFile('gs-outpath');
|
|
|
|
// Generate palette file. FFmpeg explictly needs to be told the
|
|
// extension for PNG files outputs
|
|
$palette = $this->tempnam_sfx(sys_get_temp_dir(), '.png');
|
|
|
|
// Build filters
|
|
$filters = 'fps=30';
|
|
$filters .= ",crop={$box['w']}:{$box['h']}:{$box['x']}:{$box['y']}";
|
|
$filters .= ",scale={$box['width']}:{$box['height']}:flags=lanczos";
|
|
|
|
// Assemble commands for palette generation
|
|
$commands[] = $commands_2[] = '-f';
|
|
$commands[] = $commands_2[] = 'gif';
|
|
$commands[] = $commands_2[] = '-i';
|
|
$commands[] = $commands_2[] = $imagefile->filepath;
|
|
$commands[] = '-vf';
|
|
$commands[] = $filters . ',palettegen';
|
|
$commands[] = '-y';
|
|
$commands[] = $palette;
|
|
|
|
// Assemble commands for GIF generation
|
|
$commands_2[] = '-i';
|
|
$commands_2[] = $palette;
|
|
$commands_2[] = '-lavfi';
|
|
$commands_2[] = $filters . ' [x]; [x][1:v] paletteuse';
|
|
$commands_2[] = '-f';
|
|
$commands_2[] = 'gif';
|
|
$commands_2[] = '-y';
|
|
$commands_2[] = $tempfile->getRealPath();
|
|
|
|
$success = true;
|
|
|
|
// Generate the palette image
|
|
try {
|
|
$ffmpeg->getFFMpegDriver()->command($commands);
|
|
} catch (Exception $e) {
|
|
$this->log(LOG_ERR, 'Unable to generate the palette image');
|
|
$success = false;
|
|
}
|
|
|
|
// Generate GIF
|
|
try {
|
|
if ($success) {
|
|
$ffmpeg->getFFMpegDriver()->command($commands_2);
|
|
}
|
|
} catch (Exception $e) {
|
|
$this->log(LOG_ERR, 'Unable to generate the GIF image');
|
|
$success = false;
|
|
}
|
|
|
|
if ($success) {
|
|
try {
|
|
$tempfile->commit($outpath);
|
|
} catch (TemporaryFileException $e) {
|
|
$this->log(LOG_ERR, 'Unable to save the GIF image');
|
|
$success = false;
|
|
}
|
|
}
|
|
|
|
@unlink($palette);
|
|
|
|
return $success;
|
|
}
|
|
|
|
/**
|
|
* Suffix version of tempnam.
|
|
* Courtesy of tomas at slax dot org:
|
|
*
|
|
* @see https://www.php.net/manual/en/function.tempnam.php#98232
|
|
*/
|
|
private function tempnam_sfx(string $dir, string $suffix): string
|
|
{
|
|
do {
|
|
$file = $dir . '/' . mt_rand() . $suffix;
|
|
$fp = @fopen($file, 'x');
|
|
} while (!$fp);
|
|
|
|
fclose($fp);
|
|
return $file;
|
|
}
|
|
|
|
public function onPluginVersion(array &$versions): bool
|
|
{
|
|
$versions[] = ['name' => 'FFmpeg',
|
|
'version' => self::PLUGIN_VERSION,
|
|
'author' => 'Bruno Casteleiro',
|
|
'homepage' => 'https://notabug.org/diogo/gnu-social/src/nightly/plugins/FFmpeg',
|
|
'rawdescription' => // TRANS: Plugin description.
|
|
_m('Use PHP-FFMpeg for resizing animated GIFs'), ];
|
|
return true;
|
|
}
|
|
}
|