1 files changed, 106 insertions, 0 deletions
diff --git a/lib/private/preview/movie.php b/lib/private/preview/movie.php
new file mode 100644
index 00000000000..d69266ceb33
--- /dev/null
+++ b/lib/private/preview/movie.php
@@ -0,0 +1,106 @@
+<?php
+/**
+ * Copyright (c) 2013 Frank Karlitschek frank@owncloud.org
+ * Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+namespace OC\Preview;
+
+// movie preview is currently not supported on Windows
+if (!\OC_Util::runningOnWindows()) {
+	$avconvBinary = \OC_Helper::findBinaryPath('avconv');
+	$ffmpegBinary = ($avconvBinary) ? null : \OC_Helper::findBinaryPath('ffmpeg');
+
+	if ($avconvBinary || $ffmpegBinary) {
+
+		class Movie extends Provider {
+			public static $avconvBinary;
+			public static $ffmpegBinary;
+
+			public function getMimeType() {
+				return '/video\/.*/';
+			}
+
+			public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
+				// TODO: use proc_open() and stream the source file ?
+
+				$fileInfo = $fileview->getFileInfo($path);
+				$useFileDirectly = (!$fileInfo->isEncrypted() && !$fileInfo->isMounted());
+
+				if ($useFileDirectly) {
+					$absPath = $fileview->getLocalFile($path);
+				} else {
+					$absPath = \OC_Helper::tmpFile();
+
+					$handle = $fileview->fopen($path, 'rb');
+
+					// we better use 5MB (1024 * 1024 * 5 = 5242880) instead of 1MB.
+					// in some cases 1MB was no enough to generate thumbnail
+					$firstmb = stream_get_contents($handle, 5242880);
+					file_put_contents($absPath, $firstmb);
+				}
+
+				$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, $absPath, 0);
+					}
+				}
+
+				if (!$useFileDirectly) {
+					unlink($absPath);
+				}
+
+				return $result;
+			}
+
+			/**
+			 * @param int $maxX
+			 * @param int $maxY
+			 * @param string $absPath
+			 * @param string $tmpPath
+			 * @param int $second
+			 * @return bool|\OC_Image
+			 */
+			private function generateThumbNail($maxX, $maxY, $absPath, $second)
+			{
+				$tmpPath = \OC_Helper::tmpFile();
+
+				if (self::$avconvBinary) {
+					$cmd = self::$avconvBinary . ' -an -y -ss ' . escapeshellarg($second) .
+						' -i ' . escapeshellarg($absPath) .
+						' -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' .
+						' -s ' . escapeshellarg($maxX) . 'x' . escapeshellarg($maxY) .
+						' ' . escapeshellarg($tmpPath) .
+						' > /dev/null 2>&1';
+				}
+
+				exec($cmd, $output, $returnCode);
+
+				if ($returnCode === 0) {
+					$image = new \OC_Image();
+					$image->loadFromFile($tmpPath);
+					unlink($tmpPath);
+					return $image->valid() ? $image : false;
+				}
+				unlink($tmpPath);
+				return false;
+			}
+		}
+
+		// a bit hacky but didn't want to use subclasses
+		Movie::$avconvBinary = $avconvBinary;
+		Movie::$ffmpegBinary = $ffmpegBinary;
+
+		\OC\Preview::registerProvider('OC\Preview\Movie');
+	}
+}
+