nel/3rdparty/seven_zip/LzmaLib.c

   1 /* LzmaLib.c -- LZMA library wrapper
   2 2015-06-13 : Igor Pavlov : Public domain */
   3
   4 #include "Alloc.h"
   5 #include "LzmaDec.h"
   6 #include "LzmaEnc.h"
   7 #include "LzmaLib.h"
   8
   9 MY_STDAPI LzmaCompress(unsigned char *dest, size_t *destLen, const unsigned char *src, size_t srcLen,
  10   unsigned char *outProps, size_t *outPropsSize,
  11   int level, /* 0 <= level <= 9, default = 5 */
  12   unsigned dictSize, /* use (1 << N) or (3 << N). 4 KB < dictSize <= 128 MB */
  13   int lc, /* 0 <= lc <= 8, default = 3  */
  14   int lp, /* 0 <= lp <= 4, default = 0  */
  15   int pb, /* 0 <= pb <= 4, default = 2  */
  16   int fb,  /* 5 <= fb <= 273, default = 32 */
  17   int numThreads /* 1 or 2, default = 2 */
  18 )
  19 {
  20   CLzmaEncProps props;
  21   LzmaEncProps_Init(&props);
  22   props.level = level;
  23   props.dictSize = dictSize;
  24   props.lc = lc;
  25   props.lp = lp;
  26   props.pb = pb;
  27   props.fb = fb;
  28   props.numThreads = numThreads;
  29
  30   return LzmaEncode(dest, destLen, src, srcLen, &props, outProps, outPropsSize, 0,
  31       NULL, &g_Alloc, &g_Alloc);
  32 }
  33
  34
  35 MY_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned char *src, size_t *srcLen,
  36   const unsigned char *props, size_t propsSize)
  37 {
  38   ELzmaStatus status;
  39   return LzmaDecode(dest, destLen, src, srcLen, props, (unsigned)propsSize, LZMA_FINISH_ANY, &status, &g_Alloc);
  40 }