1 files changed, 84 insertions, 0 deletions
diff --git a/libk3b/tools/k3blibdvdcss.h b/libk3b/tools/k3blibdvdcss.h
new file mode 100644
index 0000000..308296f
--- /dev/null
+++ b/libk3b/tools/k3blibdvdcss.h
@@ -0,0 +1,84 @@
+/* 
+ *
+ * $Id: k3blibdvdcss.h 619556 2007-01-03 17:38:12Z trueg $
+ * Copyright (C) 2004 Sebastian Trueg <[email protected]>
+ *
+ * This file is part of the K3b project.
+ * Copyright (C) 1998-2007 Sebastian Trueg <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * See the file "COPYING" for the exact licensing terms.
+ */
+
+#ifndef _K3B_LIBDVDCSS_H_
+#define _K3B_LIBDVDCSS_H_
+
+#include "k3b_export.h"
+
+namespace K3bDevice {
+  class Device;
+}
+
+
+/**
+ * Wrapper class for libdvdcss. dynamically openes the library if it
+ * is available on the system.
+ */
+class LIBK3B_EXPORT K3bLibDvdCss
+{
+ public:
+  ~K3bLibDvdCss();
+
+  static const int DVDCSS_BLOCK_SIZE = 2048;
+  static const int DVDCSS_NOFLAGS = 0;
+  static const int DVDCSS_READ_DECRYPT = (1 << 0);
+  static const int DVDCSS_SEEK_MPEG = (1 << 0);
+  static const int DVDCSS_SEEK_KEY = (1 << 1);
+
+  /**
+   * Try to open a Video DVD and authenticate it.
+   * @return true if the Video DVD could be authenticated successfully, false otherwise.
+   */
+  bool open( K3bDevice::Device* dev );
+  void close();
+
+  int seek( int sector, int flags );
+  int read( void* buffer, int sectors, int flags );
+
+  /**
+   * This method optimized the seek calls to maximize reading performance.
+   * It also makes sure we never read unscrambled and scrambled data at the same time.
+   *
+   * You have to call crackAllKeys() before using this. Do never call this in combination
+   * with seek or read!
+   */
+  int readWrapped( void* buffer, int firstSector, int sectors );
+
+  /**
+   * Cache all CSS keys to guarantee smooth reading further on.
+   * This method also creates a title offset list which is needed by readWrapped.
+   */
+  bool crackAllKeys();
+
+  /**
+   * returns 0 if the libdvdcss could not
+   * be found on the system.
+   * Otherwise you have to take care of
+   * deleting.
+   */
+  static K3bLibDvdCss* create();
+
+ private:
+  class Private;
+  Private* d;
+
+  K3bLibDvdCss();
+
+  static void* s_libDvdCss;
+  static int s_counter;
+};
+
+#endif