62 lines
2.3 KiB
C
62 lines
2.3 KiB
C
/* FFdecsa -- fast decsa algorithm
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*
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* Copyright (C) 2003-2004 fatih89r
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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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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef FFDECSA_H
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#define FFDECSA_H
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//----- public interface
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// -- how many packets can be decrypted at the same time
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// This is an info about internal decryption parallelism.
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// You should try to call decrypt_packets with more packets than the number
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// returned here for performance reasons (use get_suggested_cluster_size to know
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// how many).
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int get_internal_parallelism(void);
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// -- how many packets you should have in a cluster when calling decrypt_packets
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// This is a suggestion to achieve optimal performance; typically a little
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// higher than what get_internal_parallelism returns.
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// Passing less packets could slow down the decryption.
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// Passing more packets is never bad (if you don't spend a lot of time building
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// the list).
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int get_suggested_cluster_size(void);
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// -- alloc & free the key structure
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void *get_key_struct(void);
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void free_key_struct(void *keys);
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// -- set control words, 8 bytes each
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void set_control_words(void *keys, const unsigned char *even, const unsigned char *odd);
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// -- set even control word, 8 bytes
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void set_even_control_word(void *keys, const unsigned char *even);
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// -- set odd control word, 8 bytes
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void set_odd_control_word(void *keys, const unsigned char *odd);
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// -- get control words, 8 bytes each
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//void get_control_words(void *keys, unsigned char *even, unsigned char *odd);
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// -- decrypt many TS packets
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// This interface is a bit complicated because it is designed for maximum speed.
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// Please read doc/how_to_use.txt.
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int decrypt_packets(void *keys, unsigned char **cluster);
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#endif
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