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Annotation of embedaddon/strongswan/src/libstrongswan/plugins/bliss/bliss_huffman_code.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2014 Andreas Steffen
        !             3:  * HSR Hochschule fuer Technik Rapperswil
        !             4:  *
        !             5:  * This program is free software; you can redistribute it and/or modify it
        !             6:  * under the terms of the GNU General Public License as published by the
        !             7:  * Free Software Foundation; either version 2 of the License, or (at your
        !             8:  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
        !             9:  *
        !            10:  * This program is distributed in the hope that it will be useful, but
        !            11:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            12:  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
        !            13:  * for more details.
        !            14:  */
        !            15: 
        !            16: /**
        !            17:  * @defgroup bliss_huffman_code bliss_huffman_code
        !            18:  * @{ @ingroup bliss_p
        !            19:  */
        !            20: 
        !            21: #ifndef BLISS_HUFFMAN_CODE_H_
        !            22: #define BLISS_HUFFMAN_CODE_H_
        !            23: 
        !            24: #include "bliss_param_set.h"
        !            25: 
        !            26: #include <library.h>
        !            27: 
        !            28: typedef struct bliss_huffman_code_t bliss_huffman_code_t;
        !            29: typedef struct bliss_huffman_code_tuple_t bliss_huffman_code_tuple_t;
        !            30: typedef struct bliss_huffman_code_node_t bliss_huffman_code_node_t;
        !            31: 
        !            32: struct bliss_huffman_code_tuple_t {
        !            33:        uint32_t code;
        !            34:        uint16_t bits;
        !            35: };
        !            36: 
        !            37: #define BLISS_HUFFMAN_CODE_NO_TUPLE            -1
        !            38: #define BLISS_HUFFMAN_CODE_NO_NODE             -1
        !            39: 
        !            40: struct bliss_huffman_code_node_t {
        !            41:        int16_t node_0;
        !            42:        int16_t node_1;
        !            43:        int16_t tuple;
        !            44: };
        !            45: 
        !            46: /**
        !            47:  * Defines the Huffman code for the optimum encoding of a BLISS signature
        !            48:  */
        !            49: struct bliss_huffman_code_t {
        !            50: 
        !            51:        /**
        !            52:         * Range of z1:  0..n_z1-1
        !            53:         */
        !            54:        uint16_t n_z1;
        !            55: 
        !            56:        /**
        !            57:         * Range of z2:  -n_z2..n_z2
        !            58:         */
        !            59:        uint16_t n_z2;
        !            60: 
        !            61:        /**
        !            62:         * Table of tuple codewords
        !            63:         */
        !            64:        bliss_huffman_code_tuple_t *tuples;
        !            65: 
        !            66:        /**
        !            67:         * Table of binary decision nodes
        !            68:         */
        !            69:        bliss_huffman_code_node_t *nodes;
        !            70: };
        !            71: 
        !            72: /**
        !            73:  * Get Optimum Huffman code for BLISS signature given by BLISS parameter set ID
        !            74:  *
        !            75:  * @param id   BLISS parameter set ID
        !            76:  * @return             Optimum Huffman code for BLISS signature
        !            77: */
        !            78: bliss_huffman_code_t* bliss_huffman_code_get_by_id(bliss_param_set_id_t id);
        !            79: 
        !            80: #endif /** BLISS_HUFFMAN_CODE_H_ @}*/