mirror of
https://github.com/Xevion/easy7zip.git
synced 2025-12-14 04:11:37 -06:00
58069903d0
- updated zstd to latest devel release - lz4, lz5 and zstd is included now - all three support threading
67 lines
1.5 KiB
Markdown
67 lines
1.5 KiB
Markdown
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# Multithreading Library for [LZ4], [LZ5] and [ZStandard]
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### Compression
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```
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typedef struct {
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void *buf; /* ptr to data */
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size_t size; /* current filled in buf */
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size_t allocated; /* length of buf */
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} LZ4MT_Buffer;
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/**
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* reading and writing functions
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* - you can use stdio functions or plain read/write ...
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* - a sample is given in 7-Zip ZS or lz4mt.c
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*/
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typedef int (fn_read) (void *args, LZ4MT_Buffer * in);
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typedef int (fn_write) (void *args, LZ4MT_Buffer * out);
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typedef struct {
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fn_read *fn_read;
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void *arg_read;
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fn_write *fn_write;
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void *arg_write;
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} LZ4MT_RdWr_t;
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typedef struct LZ4MT_CCtx_s LZ4MT_CCtx;
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/* 1) allocate new cctx */
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LZ4MT_CCtx *LZ4MT_createCCtx(int threads, int level, int inputsize);
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/* 2) threaded compression */
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size_t LZ4MT_CompressCCtx(LZ4MT_CCtx * ctx, LZ4MT_RdWr_t * rdwr);
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/* 3) get some statistic */
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size_t LZ4MT_GetFramesCCtx(LZ4MT_CCtx * ctx);
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size_t LZ4MT_GetInsizeCCtx(LZ4MT_CCtx * ctx);
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size_t LZ4MT_GetOutsizeCCtx(LZ4MT_CCtx * ctx);
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/* 4) free cctx */
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void LZ4MT_freeCCtx(LZ4MT_CCtx * ctx);
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```
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### Decompression
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```
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typedef struct LZ4MT_DCtx_s LZ4MT_DCtx;
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/* 1) allocate new cctx */
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LZ4MT_DCtx *LZ4MT_createDCtx(int threads, int inputsize);
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/* 2) threaded compression */
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size_t LZ4MT_DecompressDCtx(LZ4MT_DCtx * ctx, LZ4MT_RdWr_t * rdwr);
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/* 3) get some statistic */
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size_t LZ4MT_GetFramesDCtx(LZ4MT_DCtx * ctx);
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size_t LZ4MT_GetInsizeDCtx(LZ4MT_DCtx * ctx);
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size_t LZ4MT_GetOutsizeDCtx(LZ4MT_DCtx * ctx);
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/* 4) free cctx */
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void LZ4MT_freeDCtx(LZ4MT_DCtx * ctx);
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```
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## Todo
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- add Makefile
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