text: /*  LzmaEnc.h -- LZMA Encoder
  2017-07-27 : Igor Pavlov : Public domain */
  
  #ifndef __LZMA_ENC_H
  #define __LZMA_ENC_H
  
  #include "7zTypes.h"
  
  EXTERN_C_BEGIN
  
  #define LZMA_PROPS_SIZE 5
  
  typedef struct _CLzmaEncProps
  {
    int level;       /* 0 <= level <= 9 */
    UInt32 dictSize; /* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version
                        (1 << 12) <= dictSize <= (3 << 29) for 64-bit version
                        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 algo;        /* 0 - fast, 1 - normal, default = 1 */
    int fb;          /* 5 <= fb <= 273, default = 32 */
    int btMode;      /* 0 - hashChain Mode, 1 - binTree mode - normal, default = 1 */
    int numHashBytes; /* 2, 3 or 4, default = 4 */
    UInt32 mc;       /* 1 <= mc <= (1 << 30), default = 32 */
    unsigned writeEndMark;  /* 0 - do not write EOPM, 1 - write EOPM, default = 0 */
    int numThreads;  /* 1 or 2, default = 2 */
  
    UInt64 reduceSize; /* estimated size of data that will be compressed. default = (UInt64)(Int64)-1.
                          Encoder uses this value to reduce dictionary size */
  } CLzmaEncProps;
  
  void LzmaEncProps_Init(CLzmaEncProps *p);
  void LzmaEncProps_Normalize(CLzmaEncProps *p);
  UInt32 LzmaEncProps_GetDictSize(const CLzmaEncProps *props2);
  
  
  /* ---------- CLzmaEncHandle Interface ---------- */
  
  /* LzmaEnc* functions can return the following exit codes:
  SRes:
    SZ_OK           - OK
    SZ_ERROR_MEM    - Memory allocation error
    SZ_ERROR_PARAM  - Incorrect paramater in props
    SZ_ERROR_WRITE  - ISeqOutStream write callback error
    SZ_ERROR_OUTPUT_EOF - output buffer overflow - version with (Byte *) output
    SZ_ERROR_PROGRESS - some break from progress callback
    SZ_ERROR_THREAD - error in multithreading functions (only for Mt version)
  */
  
  typedef void * CLzmaEncHandle;
  
  CLzmaEncHandle LzmaEnc_Create(ISzAllocPtr alloc);
  void LzmaEnc_Destroy(CLzmaEncHandle p, ISzAllocPtr alloc, ISzAllocPtr allocBig);
  
  SRes LzmaEnc_SetProps(CLzmaEncHandle p, const CLzmaEncProps *props);
  void LzmaEnc_SetDataSize(CLzmaEncHandle p, UInt64 expectedDataSiize);
  SRes LzmaEnc_WriteProperties(CLzmaEncHandle p, Byte *properties, SizeT *size);
  unsigned LzmaEnc_IsWriteEndMark(CLzmaEncHandle p);
  
  SRes LzmaEnc_Encode(CLzmaEncHandle p, ISeqOutStream *outStream, ISeqInStream *inStream,
      ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);
  SRes LzmaEnc_MemEncode(CLzmaEncHandle p, Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
      int writeEndMark, ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);
  
  
  /* ---------- One Call Interface ---------- */
  
  SRes LzmaEncode(Byte *dest, SizeT *destLen, const Byte *src, SizeT srcLen,
      const CLzmaEncProps *props, Byte *propsEncoded, SizeT *propsSize, int writeEndMark,
      ICompressProgress *progress, ISzAllocPtr alloc, ISzAllocPtr allocBig);
  
  EXTERN_C_END
  
  /* ---------- Streaming Interface ---------- */
  
  SRes LzmaEnc_Prepare(CLzmaEncHandle pp, ISeqOutStream *outStream, ISeqInStream *inStream, ISzAllocPtr alloc, ISzAllocPtr allocBig);
  SRes LzmaEnc_CodeOneBlock(CLzmaEncHandle pp, UInt32 maxPackSize, UInt32 maxUnpackSize);
  BoolInt LzmaEnc_IsFinished(CLzmaEncHandle pp);
  void LzmaEnc_Finish(CLzmaEncHandle pp);
  
  #endif
  