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/*
* LZX (un)compression functions
*
* Copyright (C) 2009-2020, Joachim Metz <joachim.metz@gmail.com>
*
* Refer to AUTHORS for acknowledgements.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#if !defined( _LIBFWNT_LZX_H )
#define _LIBFWNT_LZX_H
#include <common.h>
#include <types.h>
#include "libfwnt_bit_stream.h"
#include "libfwnt_extern.h"
#include "libfwnt_huffman_tree.h"
#include "libfwnt_libcerror.h"
#if defined( __cplusplus )
extern "C" {
#endif
/* The block types
*/
enum LIBFWNT_LZX_BLOCK_TYPES
{
LIBFWNT_LZX_BLOCK_TYPE_VERBATIM = 0x01,
LIBFWNT_LZX_BLOCK_TYPE_ALIGNED = 0x02,
LIBFWNT_LZX_BLOCK_TYPE_UNCOMPRESSED = 0x03
};
int libfwnt_lzx_read_huffman_code_sizes(
libfwnt_bit_stream_t *bit_stream,
uint8_t *code_size_array,
int number_of_code_sizes,
libcerror_error_t **error );
int libfwnt_lzx_build_main_huffman_tree(
libfwnt_bit_stream_t *bit_stream,
uint8_t *code_size_array,
libfwnt_huffman_tree_t *main_huffman_tre,
libcerror_error_t **error );
int libfwnt_lzx_build_lengths_huffman_tree(
libfwnt_bit_stream_t *bit_stream,
uint8_t *code_size_array,
libfwnt_huffman_tree_t *lengths_huffman_tre,
libcerror_error_t **error );
int libfwnt_lzx_build_aligned_offsets_huffman_tree(
libfwnt_bit_stream_t *bit_stream,
uint8_t *code_size_array,
libfwnt_huffman_tree_t *aligned_offsets_huffman_tre,
libcerror_error_t **error );
int libfwnt_lzx_decode_huffman(
libfwnt_bit_stream_t *bit_stream,
uint32_t block_size,
libfwnt_huffman_tree_t *main_huffman_tree,
libfwnt_huffman_tree_t *lengths_huffman_tree,
libfwnt_huffman_tree_t *aligned_offsets_huffman_tree,
uint32_t *recent_compression_offsets,
uint8_t *uncompressed_data,
size_t uncompressed_data_size,
size_t *uncompressed_data_offset,
libcerror_error_t **error );
LIBFWNT_EXTERN \
int libfwnt_lzx_decompress(
const uint8_t *compressed_data,
size_t compressed_data_size,
uint8_t *uncompressed_data,
size_t *uncompressed_data_size,
libcerror_error_t **error );
#if defined( __cplusplus )
}
#endif
#endif /* !defined( _LIBFWNT_LZX_H ) */
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