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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Georg Ehrke <oc.list@georgehrke.com>
* @author Joas Schilling <coding@schilljs.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Olivier Paroz <github@oparoz.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Preview;
use OCP\Files\File;
use OCP\IImage;
class Movie extends ProviderV2 {
public static $avconvBinary;
public static $ffmpegBinary;
/**
* {@inheritDoc}
*/
public function getMimeType(): string {
return '/video\/.*/';
}
/**
* {@inheritDoc}
*/
public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage {
// TODO: use proc_open() and stream the source file ?
$absPath = $this->getLocalFile($file, 5242880); // only use the first 5MB
$result = $this->generateThumbNail($maxX, $maxY, $absPath, 5);
if ($result === false) {
$result = $this->generateThumbNail($maxX, $maxY, $absPath, 1);
if ($result === false) {
$result = $this->generateThumbNail($maxX, $maxY, $absPath, 0);
}
}
$this->cleanTmpFiles();
return $result;
}
/**
* @param int $maxX
* @param int $maxY
* @param string $absPath
* @param int $second
* @return null|\OCP\IImage
*/
private function generateThumbNail($maxX, $maxY, $absPath, $second): ?IImage {
$tmpPath = \OC::$server->getTempManager()->getTemporaryFile();
if (self::$avconvBinary) {
$cmd = self::$avconvBinary . ' -y -ss ' . escapeshellarg($second) .
' -i ' . escapeshellarg($absPath) .
' -an -f mjpeg -vframes 1 -vsync 1 ' . escapeshellarg($tmpPath) .
' > /dev/null 2>&1';
} else {
$cmd = self::$ffmpegBinary . ' -y -ss ' . escapeshellarg($second) .
' -i ' . escapeshellarg($absPath) .
' -f mjpeg -vframes 1' .
' ' . escapeshellarg($tmpPath) .
' > /dev/null 2>&1';
}
exec($cmd, $output, $returnCode);
if ($returnCode === 0) {
$image = new \OC_Image();
$image->loadFromFile($tmpPath);
if ($image->valid()) {
unlink($tmpPath);
$image->scaleDownToFit($maxX, $maxY);
return $image;
}
}
unlink($tmpPath);
return null;
}
}
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