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3719602c PC |
1 | /* license:BSD-3-Clause |
2 | * copyright-holders:Aaron Giles | |
3 | *************************************************************************** | |
4 | ||
5 | lzma.h | |
6 | ||
7 | LZMA compression wrappers | |
8 | ||
9 | ***************************************************************************/ | |
10 | ||
11 | #pragma once | |
12 | ||
13 | #ifndef __LIBCHDR_LZMA_H__ | |
14 | #define __LIBCHDR_LZMA_H__ | |
15 | ||
16 | #include <stdint.h> | |
17 | ||
18 | #include <LzmaEnc.h> | |
19 | #include <LzmaDec.h> | |
20 | ||
21 | #include <libchdr/libchdr_zlib.h> | |
22 | ||
23 | /* codec-private data for the LZMA codec */ | |
24 | #define MAX_LZMA_ALLOCS 64 | |
25 | ||
26 | typedef struct _lzma_allocator lzma_allocator; | |
27 | struct _lzma_allocator | |
28 | { | |
29 | void *(*Alloc)(void *p, size_t size); | |
30 | void (*Free)(void *p, void *address); /* address can be 0 */ | |
31 | void (*FreeSz)(void *p, void *address, size_t size); /* address can be 0 */ | |
32 | uint32_t* allocptr[MAX_LZMA_ALLOCS]; | |
33 | uint32_t* allocptr2[MAX_LZMA_ALLOCS]; | |
34 | }; | |
35 | ||
36 | typedef struct _lzma_codec_data lzma_codec_data; | |
37 | struct _lzma_codec_data | |
38 | { | |
39 | CLzmaDec decoder; | |
40 | lzma_allocator allocator; | |
41 | }; | |
42 | ||
43 | /* codec-private data for the CDLZ codec */ | |
44 | typedef struct _cdlz_codec_data cdlz_codec_data; | |
45 | struct _cdlz_codec_data { | |
46 | /* internal state */ | |
47 | lzma_codec_data base_decompressor; | |
48 | #ifdef WANT_SUBCODE | |
49 | zlib_codec_data subcode_decompressor; | |
50 | #endif | |
51 | uint8_t* buffer; | |
52 | }; | |
53 | ||
54 | chd_error lzma_codec_init(void* codec, uint32_t hunkbytes); | |
55 | ||
56 | void lzma_codec_free(void* codec); | |
57 | ||
58 | /*------------------------------------------------- | |
59 | * decompress - decompress data using the LZMA | |
60 | * codec | |
61 | *------------------------------------------------- | |
62 | */ | |
63 | ||
64 | chd_error lzma_codec_decompress(void* codec, const uint8_t *src, | |
65 | uint32_t complen, uint8_t *dest, uint32_t destlen); | |
66 | ||
67 | chd_error cdlz_codec_init(void* codec, uint32_t hunkbytes); | |
68 | ||
69 | void cdlz_codec_free(void* codec); | |
70 | ||
71 | chd_error cdlz_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen); | |
72 | ||
73 | #endif /* __LIBCHDR_LZMA_H__ */ |