gnu-social/plugins/AudioEncoder/AudioEncoder.php

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<?php
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declare(strict_types = 1);
// {{{ License
// 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/>.
// }}}
/**
* Audio template and metadata support via PHP-FFMpeg
*
* @package GNUsocial
*
* @author Diogo Peralta Cordeiro <mail@diogo.site>
* @copyright 2021 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\AudioEncoder;
use App\Core\Event;
use App\Core\GSFile;
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use function App\Core\I18n\_m;
use App\Core\Modules\Plugin;
use App\Util\Exception\ServerException;
use App\Util\Formatting;
use FFMpeg\FFProbe as ffprobe;
use SplFileInfo;
class AudioEncoder extends Plugin
{
public function version(): string
{
return '0.1.0';
}
public static function shouldHandle(string $mimetype): bool
{
return GSFile::mimetypeMajor($mimetype) === 'audio';
}
public function onFileMetaAvailable(array &$event_map, string $mimetype): bool
{
if (!self::shouldHandle($mimetype)) {
return Event::next;
}
$event_map['audio'][] = [$this, 'fileMeta'];
return Event::next;
}
/**
* Adds duration metadata to audios
*
* @param null|string $mimetype in/out
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* @param null|int $width out audio duration
*
* @return bool true if metadata filled
*/
public function fileMeta(SplFileInfo &$file, ?string &$mimetype, ?int &$width, ?int &$height): bool
{
// Create FFProbe instance
// Need to explicitly tell the drivers' location, or it won't find them
$ffprobe = ffprobe::create([
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'ffmpeg.binaries' => exec('which ffmpeg'),
'ffprobe.binaries' => exec('which ffprobe'),
]);
$metadata = $ffprobe->streams($file->getRealPath()) // extracts streams informations
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->audios() // filters audios streams
->first(); // returns the first audio stream
$width = (int) ceil((float) $metadata->get('duration'));
return true;
}
/**
* Generates the view for attachments of type Video
*/
public function onViewAttachment(array $vars, array &$res): bool
{
if (!self::shouldHandle($vars['attachment']->getMimetype())) {
return Event::next;
}
$res[] = Formatting::twigRenderFile(
'audioEncoder/audioEncoderView.html.twig',
[
'attachment' => $vars['attachment'],
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'note' => $vars['note'],
],
);
return Event::stop;
}
/**
* @throws ServerException
*/
public function onPluginVersion(array &$versions): bool
{
$versions[] = [
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'name' => 'AudioEncoder',
'version' => self::version(),
'author' => 'Diogo Peralta Cordeiro',
'rawdescription' => _m('Use PHP-FFMpeg for some more audio support.'),
];
return Event::next;
}
}