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Some comments to explain streaming decompression API

dev
Yann Collet 2015-02-20 18:52:24 +01:00
parent f66d2babf8
commit 852cd3d8dc
1 changed files with 10 additions and 3 deletions
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11
lib/zstd_static.h
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@ -57,9 +57,16 @@ typedef void* ZSTD_dctx_t;
ZSTD_dctx_t ZSTD_createDCtx(void); ZSTD_dctx_t ZSTD_createDCtx(void);
size_t ZSTD_freeDCtx(ZSTD_dctx_t dctx); size_t ZSTD_freeDCtx(ZSTD_dctx_t dctx);
size_t ZSTD_getNextcBlockSize(ZSTD_dctx_t dctx); size_t ZSTD_nextSrcSizeToDecompress(ZSTD_dctx_t dctx);
size_t ZSTD_decompressContinue(ZSTD_dctx_t dctx, void* dst, size_t maxDstSize, const void* src, size_t srcSize); size_t ZSTD_decompressContinue(ZSTD_dctx_t dctx, void* dst, size_t maxDstSize, const void* src, size_t srcSize);
/*
Use above functions alternatively.
ZSTD_nextSrcSizeToDecompress() tells how much bytes to provide as input to ZSTD_decompressContinue().
This value is expected to be provided, precisely, as 'srcSize'.
Otherwise, compression will fail (result is an error code, which can be tested using ZSTD_isError() )
ZSTD_decompressContinue() result is the number of bytes regenerated within 'dst'.
It can be zero, which is not an error; it just means ZSTD_decompressContinue() has decoded some header.
*/
/************************************** /**************************************
* Error management * Error management