implement movie previews

lib/preview/movies.php

@@ -7,7 +7,6 @@
  * See the COPYING-README file.
  */
 if(!is_null(shell_exec('ffmpeg -version'))){
-
 	class OC_Preview_Movie extends OC_Preview_Provider{
 
 		public function getMimeType(){
@@ -15,28 +14,18 @@ if(!is_null(shell_exec('ffmpeg -version'))){
 		}
 		
 		public function getThumbnail($path,$maxX,$maxY,$scalingup,$fileview) {
-				$thumbnails_view = new \OC_FilesystemView('/'.\OCP\User::getUser() .'/'.OC_Preview::THUMBNAILS_FOLDER);
-
-				// is a preview already in the cache?
-				if ($thumbnails_view->file_exists($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup)) {
-						return new \OC_Image($thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup));
-				}
-
-				// does the sourcefile exist?
-				if (!\OC_Filesystem::file_exists($path)) {
-						\OC_Log::write('Preview', 'File '.$path.' don\'t exists', \OC_Log::WARN);
-						return false;
-				}
-
-				// call ffmpeg to do the screenshot
-				shell_exec('ffmpeg -y  -i {'.escapeshellarg($path).'} -f mjpeg -vframes 1 -ss 1 -s {'.escapeshellarg($maxX).'}x{'.escapeshellarg($maxY).'} {.'.$thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup).'}');
-
-				// output the generated Preview
-				$thumbnails_view->getLocalFile($path.'-'.$maxX.'-'.$maxY.'-'.$scalingup);
-				unset($thumbnails_view);
+			$abspath = $fileview->getLocalfile($path);
+			
+			$tmppath = OC_Helper::tmpFile();
+			
+			$cmd = 'ffmpeg -y  -i ' . escapeshellarg($abspath) . ' -f mjpeg -vframes 1 -ss 1 -s ' . escapeshellarg($maxX) . 'x' . escapeshellarg($maxY) . ' ' . $tmppath;
+			shell_exec($cmd);
+			
+			$image = new \OC_Image($tmppath);
+			if (!$image->valid()) return false;
+			
+			return $image;
 		}
-
 	}
-
 	OC_Preview::registerProvider('OC_Preview_Movie');
 }
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