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1 /* LzmaEnc.h -- LZMA Encoder
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2 2008-10-04 : Igor Pavlov : Public domain */
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3
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4 #ifndef __LZMAENC_H
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5 #define __LZMAENC_H
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6
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7 #include "Types.h"
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8
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9 #define LZMA_PROPS_SIZE 5
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10
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11 typedef struct _CLzmaEncProps
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12 {
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13 int level; /* 0 <= level <= 9 */
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14 UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version
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15 (1 << 12) <= dictSize <= (1 << 30) for 64-bit version
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16 default = (1 << 24) */
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17 int lc; /* 0 <= lc <= 8, default = 3 */
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18 int lp; /* 0 <= lp <= 4, default = 0 */
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19 int pb; /* 0 <= pb <= 4, default = 2 */
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20 int algo; /* 0 - fast, 1 - normal, default = 1 */
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21 int fb; /* 5 <= fb <= 273, default = 32 */
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22 int btMode; /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1 */
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23 int numHashBytes; /* 2, 3 or 4, default = 4 */
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24 UInt32 mc; /* 1 <= mc <= (1 << 30), default = 32 */
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25 unsigned writeEndMark; /* 0 - do not write EOPM, 1 - write EOPM, default = 0 */
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26 int numThreads; /* 1 or 2, default = 2 */
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27 } CLzmaEncProps;
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28
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29 void LzmaEncProps_Init(CLzmaEncProps *p);
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30 void LzmaEncProps_Normalize(CLzmaEncProps *p);
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31 UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2);
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32
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33
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34 /* ---------- CLzmaEncHandle Interface ---------- */
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35
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36 /* LzmaEnc_* functions can return the following exit codes:
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37 Returns:
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38 SZ_OK - OK
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39 SZ_ERROR_MEM - Memory allocation error
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40 SZ_ERROR_PARAM - Incorrect paramater in props
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41 SZ_ERROR_WRITE - Write callback error.
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42 SZ_ERROR_PROGRESS - some break from progress callback
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43 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version)
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44 */
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45
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46 typedef void * CLzmaEncHandle;
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47
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48 CLzmaEncHandle LzmaEnc_Create(ISzAlloc *alloc);
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49 void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAlloc *alloc, ISzAlloc *allocBig);
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50 SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props);
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51 SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size);
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52 SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream,
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53 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
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54 SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
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55 int writeEndMark, ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
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56
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57 /* ---------- One Call Interface ---------- */
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58
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59 /* LzmaEncode
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60 Return code:
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61 SZ_OK - OK
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62 SZ_ERROR_MEM - Memory allocation error
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63 SZ_ERROR_PARAM - Incorrect paramater
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64 SZ_ERROR_OUTPUT_EOF - output buffer overflow
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65 SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version)
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66 */
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67
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68 SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
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69 const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,
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70 ICompressProgress *progress, ISzAlloc *alloc, ISzAlloc *allocBig);
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71
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72 #endif
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