122 lines
3.3 KiB
PHP
122 lines
3.3 KiB
PHP
<?php
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/**
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* Copyright (c) 2013 Frank Karlitschek frank@owncloud.org
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* Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\Preview;
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function findBinaryPath($program) {
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exec('command -v ' . escapeshellarg($program) . ' 2> /dev/null', $output, $returnCode);
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if ($returnCode === 0 && count($output) > 0) {
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return escapeshellcmd($output[0]);
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}
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return null;
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}
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// movie preview is currently not supported on Windows
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if (!\OC_Util::runningOnWindows()) {
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$isExecEnabled = \OC_Helper::is_function_enabled('exec');
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$ffmpegBinary = null;
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$avconvBinary = null;
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if ($isExecEnabled) {
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$avconvBinary = findBinaryPath('avconv');
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if (!$avconvBinary) {
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$ffmpegBinary = findBinaryPath('ffmpeg');
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}
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}
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if($isExecEnabled && ( $avconvBinary || $ffmpegBinary )) {
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class Movie extends Provider {
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public static $avconvBinary;
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public static $ffmpegBinary;
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public function getMimeType() {
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return '/video\/.*/';
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}
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public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
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// TODO: use proc_open() and stream the source file ?
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$fileInfo = $fileview->getFileInfo($path);
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$useFileDirectly = (!$fileInfo->isEncrypted() && !$fileInfo->isMounted());
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if ($useFileDirectly) {
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$absPath = $fileview->getLocalFile($path);
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} else {
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$absPath = \OC_Helper::tmpFile();
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$handle = $fileview->fopen($path, 'rb');
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// we better use 5MB (1024 * 1024 * 5 = 5242880) instead of 1MB.
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// in some cases 1MB was no enough to generate thumbnail
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$firstmb = stream_get_contents($handle, 5242880);
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file_put_contents($absPath, $firstmb);
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}
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$result = $this->generateThumbNail($maxX, $maxY, $absPath, 5);
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if ($result === false) {
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$result = $this->generateThumbNail($maxX, $maxY, $absPath, 1);
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if ($result === false) {
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$result = $this->generateThumbNail($maxX, $maxY, $absPath, 0);
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}
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}
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if (!$useFileDirectly) {
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unlink($absPath);
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}
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return $result;
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}
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/**
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* @param int $maxX
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* @param int $maxY
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* @param string $absPath
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* @param string $tmpPath
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* @param int $second
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* @return bool|\OC_Image
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*/
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private function generateThumbNail($maxX, $maxY, $absPath, $second)
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{
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$tmpPath = \OC_Helper::tmpFile();
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if (self::$avconvBinary) {
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$cmd = self::$avconvBinary . ' -an -y -ss ' . escapeshellarg($second) .
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' -i ' . escapeshellarg($absPath) .
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' -f mjpeg -vframes 1 -vsync 1 ' . escapeshellarg($tmpPath) .
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' > /dev/null 2>&1';
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} else {
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$cmd = self::$ffmpegBinary . ' -y -ss ' . escapeshellarg($second) .
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' -i ' . escapeshellarg($absPath) .
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' -f mjpeg -vframes 1' .
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' -s ' . escapeshellarg($maxX) . 'x' . escapeshellarg($maxY) .
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' ' . escapeshellarg($tmpPath) .
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' > /dev/null 2>&1';
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}
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exec($cmd, $output, $returnCode);
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if ($returnCode === 0) {
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$image = new \OC_Image();
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$image->loadFromFile($tmpPath);
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unlink($tmpPath);
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return $image->valid() ? $image : false;
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}
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unlink($tmpPath);
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return false;
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}
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}
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// a bit hacky but didn't want to use subclasses
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Movie::$avconvBinary = $avconvBinary;
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Movie::$ffmpegBinary = $ffmpegBinary;
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\OC\Preview::registerProvider('OC\Preview\Movie');
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}
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}
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