compression.c File Reference

Functions handling compression. More...

#include <string.h>
#include "compression.h"
#include "buffer.h"
#include "mobi.h"
#include "debug.h"

Functions
MOBI_RET	mobi_decompress_lz77 (unsigned char *out, const unsigned char *in, size_t *len_out, const size_t len_in)
	Decompressor fo PalmDOC version of LZ77 compression. More...
MOBI_RET	mobi_decompress_huffman (unsigned char *out, const unsigned char *in, size_t *len_out, size_t len_in, const MOBIHuffCdic *huffcdic)
	Decompressor for huff/cdic compressed text records. More...

Detailed Description

Functions handling compression.

Copyright (c) 2014 Bartek Fabiszewski http://www.fabiszewski.net

This file is part of libmobi. Licensed under LGPL, either version 3, or any later. See http://www.gnu.org/licenses/

Function Documentation

mobi_decompress_huffman()

MOBI_RET mobi_decompress_huffman	(	unsigned char *	out,
		const unsigned char *	in,
		size_t *	len_out,
		size_t	len_in,
		const MOBIHuffCdic *	huffcdic
	)

Decompressor for huff/cdic compressed text records.

Decompressor and HUFF/CDIC records parsing based on: perl EBook::Tools::Mobipocket python mobiunpack.py, calibre

Parameters

[out]	out	Decompressed destination data
[in]	in	Compressed source data
[in,out]	len_out	Size of the memory reserved for decompressed data. On return it is set to actual size of decompressed data
[in]	len_in	Size of compressed data
[in]	huffcdic	MOBIHuffCdic structure with parsed data from huff/cdic records

Returns

MOBI_RET status code (on success MOBI_SUCCESS)

mobi_decompress_lz77()

MOBI_RET mobi_decompress_lz77	(	unsigned char *	out,
		const unsigned char *	in,
		size_t *	len_out,
		const size_t	len_in
	)

Decompressor fo PalmDOC version of LZ77 compression.

Decompressor based on this algorithm: http://en.wikibooks.org/wiki/Data_Compression/Dictionary_compression#PalmDoc

Parameters

[out]	out	Decompressed destination data
[in]	in	Compressed source data
[in,out]	len_out	Size of the memory reserved for decompressed data. On return it is set to actual size of decompressed data
[in]	len_in	Size of compressed data

Returns

MOBI_RET status code (on success MOBI_SUCCESS)