bashi@chromium.org | c2a9375 | 2012-05-02 00:18:22 +0000 | [diff] [blame] | 1 | /* LzmaLib.c -- LZMA library wrapper |
| 2 | 2008-08-05 |
| 3 | Igor Pavlov |
agl@chromium.org | 92ae161 | 2012-06-26 19:58:38 +0000 | [diff] [blame^] | 4 | Public domain |
| 5 | in the public domain */ |
bashi@chromium.org | c2a9375 | 2012-05-02 00:18:22 +0000 | [diff] [blame] | 6 | |
| 7 | #include "LzmaEnc.h" |
| 8 | #include "LzmaDec.h" |
| 9 | #include "Alloc.h" |
| 10 | #include "LzmaLib.h" |
| 11 | |
| 12 | static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); } |
| 13 | static void SzFree(void *p, void *address) { p = p; MyFree(address); } |
| 14 | static ISzAlloc g_Alloc = { SzAlloc, SzFree }; |
| 15 | |
| 16 | MY_STDAPI LzmaCompress(unsigned char *dest, size_t *destLen, const unsigned char *src, size_t srcLen, |
| 17 | unsigned char *outProps, size_t *outPropsSize, |
| 18 | int level, /* 0 <= level <= 9, default = 5 */ |
| 19 | unsigned dictSize, /* use (1 << N) or (3 << N). 4 KB < dictSize <= 128 MB */ |
| 20 | int lc, /* 0 <= lc <= 8, default = 3 */ |
| 21 | int lp, /* 0 <= lp <= 4, default = 0 */ |
| 22 | int pb, /* 0 <= pb <= 4, default = 2 */ |
| 23 | int fb, /* 5 <= fb <= 273, default = 32 */ |
| 24 | int numThreads /* 1 or 2, default = 2 */ |
| 25 | ) |
| 26 | { |
| 27 | CLzmaEncProps props; |
| 28 | LzmaEncProps_Init(&props); |
| 29 | props.level = level; |
| 30 | props.dictSize = dictSize; |
| 31 | props.lc = lc; |
| 32 | props.lp = lp; |
| 33 | props.pb = pb; |
| 34 | props.fb = fb; |
| 35 | props.numThreads = numThreads; |
| 36 | |
| 37 | return LzmaEncode(dest, destLen, src, srcLen, &props, outProps, outPropsSize, 0, |
| 38 | NULL, &g_Alloc, &g_Alloc); |
| 39 | } |
| 40 | |
| 41 | |
| 42 | MY_STDAPI LzmaUncompress(unsigned char *dest, size_t *destLen, const unsigned char *src, size_t *srcLen, |
| 43 | const unsigned char *props, size_t propsSize) |
| 44 | { |
| 45 | ELzmaStatus status; |
| 46 | return LzmaDecode(dest, destLen, src, srcLen, props, (unsigned)propsSize, LZMA_FINISH_ANY, &status, &g_Alloc); |
| 47 | } |