lzma.h

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/* license:BSD-3-Clause
 * copyright-holders:Aaron Giles
 ***************************************************************************

 lzma.h

 LZMA compression wrappers

***************************************************************************/

#pragma once

#ifndef __LIBCHDR_LZMA_H__
#define __LIBCHDR_LZMA_H__

#include <stdint.h>

#include <LzmaEnc.h>
#include <LzmaDec.h>

#include <libchdr/libchdr_zlib.h>

/* codec-private data for the LZMA codec */
#define MAX_LZMA_ALLOCS 64

typedef struct _lzma_allocator lzma_allocator;
struct _lzma_allocator
{
 void *(*Alloc)(void *p, size_t size);
 void (*Free)(void *p, void *address); /* address can be 0 */
 void (*FreeSz)(void *p, void *address, size_t size); /* address can be 0 */
 uint32_t* allocptr[MAX_LZMA_ALLOCS];
};

typedef struct _lzma_codec_data lzma_codec_data;
struct _lzma_codec_data
{
 CLzmaDec decoder;
 lzma_allocator allocator;
};

/* codec-private data for the CDLZ codec */
typedef struct _cdlz_codec_data cdlz_codec_data;
struct _cdlz_codec_data {
 /* internal state */
 lzma_codec_data base_decompressor;
#ifdef WANT_SUBCODE
 zlib_codec_data subcode_decompressor;
#endif
 uint8_t* buffer;
};

chd_error lzma_codec_init(void* codec, uint32_t hunkbytes);

void lzma_codec_free(void* codec);

/*-------------------------------------------------
 * decompress - decompress data using the LZMA
 * codec
 *-------------------------------------------------
 */

chd_error lzma_codec_decompress(void* codec, const uint8_t *src,
 uint32_t complen, uint8_t *dest, uint32_t destlen);

chd_error cdlz_codec_init(void* codec, uint32_t hunkbytes);

void cdlz_codec_free(void* codec);

chd_error cdlz_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen);

#endif /* __LIBCHDR_LZMA_H__ */