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#define RINOK(x) { int __result__ = (x); if (__result__ != 0) return __result__; }

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MY_STDAPI LzmaCompress(unsigned char *dest, size_t *destLen, const unsigned char *src, size_t srcLen,
  unsigned char *outProps, size_t *outPropsSize, /* *outPropsSize must be = 5 */
  int level,      /* 0 <= level <= 9, default = 5 */
  unsigned dictSize,  /* default = (1 << 24) */
  int lc,        /* 0 <= lc <= 8, default = 3  */
  int lp,        /* 0 <= lp <= 4, default = 0  */
  int pb,        /* 0 <= pb <= 4, default = 2  */
  int fb,        /* 5 <= fb <= 273, default = 32 */
  int numThreads /* 1 or 2, default = 2 */
  );

MY_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned char *src, SizeT *srcLen,
  const unsigned char *props, size_t propsSize);

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MY_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned char *src, SizeT *srcLen,
  const unsigned char *props, size_t propsSize);

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/*
RAM requirements for LZMA:
  for compression:   (dictSize * 11.5 + 6 MB) + state_size
  for decompression: dictSize + state_size
    state_size = (4 + (1.5 << (lc + lp))) KB
    by default (lc=3, lp=0), state_size = 16 KB.

LZMA properties (5 bytes) format
    Offset Size  Description
      0     1    lc, lp and pb in encoded form.
      1     4    dictSize (little endian).
*/

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/*
LzmaCompress
------------

outPropsSize -
     In:  the pointer to the size of outProps buffer; *outPropsSize = LZMA_PROPS_SIZE = 5.
     Out: the pointer to the size of written properties in outProps buffer; *outPropsSize = LZMA_PROPS_SIZE = 5.

  LZMA Encoder will use defult values for any parameter, if it is
  -1  for any from: level, loc, lp, pb, fb, numThreads
   0  for dictSize
  
level - compression level: 0 <= level <= 9;

  level dictSize algo  fb
    0:    16 KB   0    32
    1:    64 KB   0    32
    2:   256 KB   0    32
    3:     1 MB   0    32
    4:     4 MB   0    32
    5:    16 MB   1    32
    6:    32 MB   1    32
    7+:   64 MB   1    64
 
  The default value for "level" is 5.

  algo = 0 means fast method
  algo = 1 means normal method

dictSize - The dictionary size in bytes. The maximum value is
        128 MB = (1 << 27) bytes for 32-bit version
          1 GB = (1 << 30) bytes for 64-bit version
     The default value is 16 MB = (1 << 24) bytes.
     It's recommended to use the dictionary that is larger than 4 KB and
     that can be calculated as (1 << N) or (3 << N) sizes.

lc - The number of literal context bits (high bits of previous literal).
     It can be in the range from 0 to 8. The default value is 3.
     Sometimes lc=4 gives the gain for big files.

lp - The number of literal pos bits (low bits of current position for literals).
     It can be in the range from 0 to 4. The default value is 0.
     The lp switch is intended for periodical data when the period is equal to 2^lp.
     For example, for 32-bit (4 bytes) periodical data you can use lp=2. Often it's
     better to set lc=0, if you change lp switch.

pb - The number of pos bits (low bits of current position).
     It can be in the range from 0 to 4. The default value is 2.
     The pb switch is intended for periodical data when the period is equal 2^pb.

fb - Word size (the number of fast bytes).
     It can be in the range from 5 to 273. The default value is 32.
     Usually, a big number gives a little bit better compression ratio and
     slower compression process.

numThreads - The number of thereads. 1 or 2. The default value is 2.
     Fast mode (algo = 0) can use only 1 thread.

Out:
  destLen  - processed output size
Returns:
  SZ_OK               - OK
  SZ_ERROR_MEM        - Memory allocation error
  SZ_ERROR_PARAM      - Incorrect paramater
  SZ_ERROR_OUTPUT_EOF - output buffer overflow
  SZ_ERROR_THREAD     - errors in multithreading functions (only for Mt version)
*/

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/*
LzmaUncompress
--------------
In:
  dest     - output data
  destLen  - output data size
  src      - input data
  srcLen   - input data size
Out:
  destLen  - processed output size
  srcLen   - processed input size
Returns:
  SZ_OK                - OK
  SZ_ERROR_DATA        - Data error
  SZ_ERROR_MEM         - Memory allocation arror
  SZ_ERROR_UNSUPPORTED - Unsupported properties
  SZ_ERROR_INPUT_EOF   - it needs more bytes in input buffer (src)
*/

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#define SZ_OK 0

#define SZ_ERROR_DATA 1
#define SZ_ERROR_MEM 2
#define SZ_ERROR_CRC 3
#define SZ_ERROR_UNSUPPORTED 4
#define SZ_ERROR_PARAM 5
#define SZ_ERROR_INPUT_EOF 6
#define SZ_ERROR_OUTPUT_EOF 7
#define SZ_ERROR_READ 8
#define SZ_ERROR_WRITE 9
#define SZ_ERROR_PROGRESS 10
#define SZ_ERROR_FAIL 11
#define SZ_ERROR_THREAD 12

#define SZ_ERROR_ARCHIVE 16
#define SZ_ERROR_NO_ARCHIVE 17

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PrototypeC PLzmaCompress(Dest.s, DestLen.l, Src.s, SrcLen.l, OutProps.s, OutPropsSize.l = 5, level.i = 5, DictSize.i = (1<<24), lc.i = 3, lp.i = 0, pb.i = 2, fb.i = 32, NumThreads.i = 2)

If Not OpenLibrary(0,"dll\lzma.dll")
  End
EndIf

Global LzmaCompress.PLzmaCompress = GetFunction(0,"LzmaCompress")

Debug LzmaCompress("test.lzm",FileSize("test.txt"),"test.txt",FileSize("test.txt"),"")

End