File indexing completed on 2024-04-28 04:49:52

 /*
     SPDX-FileCopyrightText: 2004-2009 Sebastian Trueg <trueg@k3b.org>
     SPDX-FileCopyrightText: 1998-2009 Sebastian Trueg <trueg@k3b.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #ifndef _K3B_LIBDVDCSS_H_
 #define _K3B_LIBDVDCSS_H_
 
 #include "k3b_export.h"
 
 namespace K3b {
     namespace Device {
         class Device;
     }
 
 
     /**
      * Wrapper class for libdvdcss. dynamically opens the library if it
      * is available on the system.
      */
     class LIBK3B_EXPORT LibDvdCss
     {
     public:
         ~LibDvdCss();
 
         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( Device::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 LibDvdCss* create();
 
     private:
         class Private;
         Private* d;
 
         LibDvdCss();
     };
 }
 
 #endif