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85 lines
2.1 KiB
85 lines
2.1 KiB
/*
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*
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* $Id: k3blibdvdcss.h 619556 2007-01-03 17:38:12Z trueg $
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* Copyright (C) 2004 Sebastian Trueg <trueg@k3b.org>
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*
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* This file is part of the K3b project.
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* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* See the file "COPYING" for the exact licensing terms.
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*/
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#ifndef _K3B_LIBDVDCSS_H_
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#define _K3B_LIBDVDCSS_H_
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#include "k3b_export.h"
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namespace K3bDevice {
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class Device;
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}
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/**
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* Wrapper class for libdvdcss. dynamically openes the library if it
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* is available on the system.
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*/
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class LIBK3B_EXPORT K3bLibDvdCss
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{
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public:
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~K3bLibDvdCss();
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static const int DVDCSS_BLOCK_SIZE = 2048;
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static const int DVDCSS_NOFLAGS = 0;
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static const int DVDCSS_READ_DECRYPT = (1 << 0);
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static const int DVDCSS_SEEK_MPEG = (1 << 0);
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static const int DVDCSS_SEEK_KEY = (1 << 1);
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/**
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* Try to open a Video DVD and authenticate it.
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* @return true if the Video DVD could be authenticated successfully, false otherwise.
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*/
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bool open( K3bDevice::Device* dev );
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void close();
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int seek( int sector, int flags );
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int read( void* buffer, int sectors, int flags );
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/**
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* This method optimized the seek calls to maximize reading performance.
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* It also makes sure we never read unscrambled and scrambled data at the same time.
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*
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* You have to call crackAllKeys() before using this. Do never call this in combination
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* with seek or read!
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*/
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int readWrapped( void* buffer, int firstSector, int sectors );
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/**
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* Cache all CSS keys to guarantee smooth reading further on.
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* This method also creates a title offset list which is needed by readWrapped.
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*/
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bool crackAllKeys();
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/**
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* returns 0 if the libdvdcss could not
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* be found on the system.
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* Otherwise you have to take care of
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* deleting.
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*/
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static K3bLibDvdCss* create();
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private:
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class Private;
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Private* d;
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K3bLibDvdCss();
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static void* s_libDvdCss;
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static int s_counter;
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};
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#endif
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