File: lzlib.h

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lzlib 1.0-2
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/*  Lzlib - A compression library for lzip files
    Copyright (C) 2009, 2010 Antonio Diaz Diaz.

    This library is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This library 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 General Public License
    along with this library.  If not, see <http://www.gnu.org/licenses/>.

    As a special exception, you may use this file as part of a free
    software library without restriction.  Specifically, if other files
    instantiate templates or use macros or inline functions from this
    file, or you compile this file and link it with other files to
    produce an executable, this file does not by itself cause the
    resulting executable to be covered by the GNU General Public
    License.  This exception does not however invalidate any other
    reasons why the executable file might be covered by the GNU General
    Public License.
*/

#ifdef __cplusplus
extern "C" {
#endif

const char * const LZ_version_string = "1.0";

enum LZ_Errno { LZ_ok = 0,         LZ_bad_argument, LZ_mem_error,
                LZ_sequence_error, LZ_header_error, LZ_unexpected_eof,
                LZ_data_error,     LZ_library_error };


const char * LZ_version( void );
const char * LZ_strerror( const enum LZ_Errno lz_errno );

int LZ_min_dictionary_bits( void );
int LZ_min_dictionary_size( void );
int LZ_max_dictionary_bits( void );
int LZ_max_dictionary_size( void );
int LZ_min_match_len_limit( void );
int LZ_max_match_len_limit( void );


/*---------------------- Compression Functions ----------------------*/

struct LZ_Encoder;

struct LZ_Encoder * LZ_compress_open( const int dictionary_size,
                                      const int match_len_limit,
                                      const long long member_size );
int LZ_compress_close( struct LZ_Encoder * const encoder );

int LZ_compress_finish( struct LZ_Encoder * const encoder );
int LZ_compress_restart_member( struct LZ_Encoder * const encoder,
                                const long long member_size );
int LZ_compress_sync_flush( struct LZ_Encoder * const encoder );

int LZ_compress_read( struct LZ_Encoder * const encoder,
                      uint8_t * const buffer, const int size );
int LZ_compress_write( struct LZ_Encoder * const encoder,
                       const uint8_t * const buffer, const int size );
int LZ_compress_write_size( struct LZ_Encoder * const encoder );

enum LZ_Errno LZ_compress_errno( struct LZ_Encoder * const encoder );
int LZ_compress_finished( struct LZ_Encoder * const encoder );
int LZ_compress_member_finished( struct LZ_Encoder * const encoder );

long long LZ_compress_data_position( struct LZ_Encoder * const encoder );
long long LZ_compress_member_position( struct LZ_Encoder * const encoder );
long long LZ_compress_total_in_size( struct LZ_Encoder * const encoder );
long long LZ_compress_total_out_size( struct LZ_Encoder * const encoder );


/*--------------------- Decompression Functions ---------------------*/

struct LZ_Decoder;

struct LZ_Decoder * LZ_decompress_open( void );
int LZ_decompress_close( struct LZ_Decoder * const decoder );

int LZ_decompress_finish( struct LZ_Decoder * const decoder );
int LZ_decompress_reset( struct LZ_Decoder * const decoder );
int LZ_decompress_sync_to_member( struct LZ_Decoder * const decoder );

int LZ_decompress_read( struct LZ_Decoder * const decoder,
                        uint8_t * const buffer, const int size );
int LZ_decompress_write( struct LZ_Decoder * const decoder,
                         const uint8_t * const buffer, const int size );
int LZ_decompress_write_size( struct LZ_Decoder * const decoder );

enum LZ_Errno LZ_decompress_errno( struct LZ_Decoder * const decoder );
int LZ_decompress_finished( struct LZ_Decoder * const decoder );
int LZ_decompress_member_finished( struct LZ_Decoder * const decoder );

int LZ_decompress_member_version( struct LZ_Decoder * const decoder );
int LZ_decompress_dictionary_size( struct LZ_Decoder * const decoder );
unsigned int LZ_decompress_data_crc( struct LZ_Decoder * const decoder );
long long LZ_decompress_data_position( struct LZ_Decoder * const decoder );
long long LZ_decompress_member_position( struct LZ_Decoder * const decoder );
long long LZ_decompress_total_in_size( struct LZ_Decoder * const decoder );
long long LZ_decompress_total_out_size( struct LZ_Decoder * const decoder );

#ifdef __cplusplus
}
#endif