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/*
* Written in 2009 by Lloyd Hilaiel
*
* License
*
* All the cruft you find here is public domain. You don't have to credit
* anyone to use this code, but my personal request is that you mention
* Igor Pavlov for his hard, high quality work.
*
* compress.h - the API for LZMA compression using easylzma
*/
#pragma once
#include "common.h"
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
/** suggested default values */
#define ELZMA_LC_DEFAULT 3
#define ELZMA_LP_DEFAULT 0
#define ELZMA_PB_DEFAULT 2
#define ELZMA_DICT_SIZE_DEFAULT_MAX (1 << 24)
/** an opaque handle to an lzma compressor */
typedef struct _elzma_compress_handle *elzma_compress_handle;
/**
* Allocate a handle to an LZMA compressor object.
*/
elzma_compress_handle EASYLZMA_API elzma_compress_alloc();
/**
* set allocation routines (optional, if not called malloc & free will
* be used)
*/
void EASYLZMA_API
elzma_compress_set_allocation_callbacks(elzma_compress_handle hand, elzma_malloc mallocFunc,
void *mallocFuncContext, elzma_free freeFunc,
void *freeFuncContext);
/**
* Free all data associated with an LZMA compressor object.
*/
void EASYLZMA_API elzma_compress_free(elzma_compress_handle *hand);
/**
* Set configuration paramters for a compression run. If not called,
* reasonable defaults will be used.
*/
int EASYLZMA_API elzma_compress_config(elzma_compress_handle hand, unsigned char lc,
unsigned char lp, unsigned char pb, unsigned char level,
unsigned int dictionarySize, elzma_file_format format,
unsigned long long uncompressedSize);
/**
* Run compression
*/
int EASYLZMA_API
elzma_compress_run(elzma_compress_handle hand, elzma_read_callback inputStream,
void *inputContext, elzma_write_callback outputStream, void *outputContext,
elzma_progress_callback progressCallback, void *progressContext);
/**
* a heuristic utility routine to guess a dictionary size that gets near
* optimal compression while reducing memory usage.
* accepts a size in bytes, returns a proposed dictionary size
*/
unsigned int EASYLZMA_API elzma_get_dict_size(unsigned long long size);
#ifdef __cplusplus
}
;
#endif
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