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1 /* LzmaEnc.h -- LZMA Encoder | |
2 2009-02-07 : Igor Pavlov : Public domain | |
3 in the public domain */ | |
4 | |
5 #ifndef __LZMA_ENC_H | |
6 #define __LZMA_ENC_H | |
7 | |
8 #include "Types.h" | |
9 | |
10 #ifdef __cplusplus | |
11 extern "C" { | |
12 #endif | |
13 | |
14 #define LZMA_PROPS_SIZE 5 | |
15 | |
16 typedef struct _CLzmaEncProps | |
17 { | |
18 int level; /* 0 <= level <= 9 */ | |
19 UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version | |
20 (1 << 12) <= dictSize <= (1 << 30) for 64-bit version | |
21 default = (1 << 24) */ | |
22 int lc; /* 0 <= lc <= 8, default = 3 */ | |
23 int lp; /* 0 <= lp <= 4, default = 0 */ | |
24 int pb; /* 0 <= pb <= 4, default = 2 */ | |
25 int algo; /* 0 - fast, 1 - normal, default = 1 */ | |
26 int fb; /* 5 <= fb <= 273, default = 32 */ | |
27 int btMode; /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1
*/ | |
28 int numHashBytes; /* 2, 3 or 4, default = 4 */ | |
29 UInt32 mc; /* 1 <= mc <= (1 << 30), default = 32 */ | |
30 unsigned writeEndMark; /* 0 - do not write EOPM, 1 - write EOPM, default = 0
*/ | |
31 int numThreads; /* 1 or 2, default = 2 */ | |
32 } CLzmaEncProps; | |
33 | |
34 void LzmaEncProps_Init(CLzmaEncProps *p); | |
35 void LzmaEncProps_Normalize(CLzmaEncProps *p); | |
36 UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2); | |
37 | |
38 | |
39 /* ---------- CLzmaEncHandle Interface ---------- */ | |
40 | |
41 /* LzmaEnc_* functions can return the following exit codes: | |
42 Returns: | |
43 SZ_OK - OK | |
44 SZ_ERROR_MEM - Memory allocation error | |
45 SZ_ERROR_PARAM - Incorrect paramater in props | |
46 SZ_ERROR_WRITE - Write callback error. | |
47 SZ_ERROR_PROGRESS - some break from progress callback | |
48 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) | |
49 */ | |
50 | |
51 typedef void * CLzmaEncHandle; | |
52 | |
53 CLzmaEncHandle LzmaEnc_Create(ISzAlloc *alloc); | |
54 void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig); | |
55 SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props); | |
56 SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size); | |
57 SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *in
Stream, | |
58 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); | |
59 SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte
*src, SizeT srcLen, | |
60 int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *al
locBig); | |
61 | |
62 /* ---------- One Call Interface ---------- */ | |
63 | |
64 /* LzmaEncode | |
65 Return code: | |
66 SZ_OK - OK | |
67 SZ_ERROR_MEM - Memory allocation error | |
68 SZ_ERROR_PARAM - Incorrect paramater | |
69 SZ_ERROR_OUTPUT_EOF - output buffer overflow | |
70 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) | |
71 */ | |
72 | |
73 SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen, | |
74 const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeE
ndMark, | |
75 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig); | |
76 | |
77 #ifdef __cplusplus | |
78 } | |
79 #endif | |
80 | |
81 #endif | |
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