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new api : setting compression parameters is refused if a dictionary is already loaded

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This commit is contained in:
Yann Collet
2017-06-19 11:53:01 -07:00
parent ed1d039127
commit d7a3bffba9
3 changed files with 31 additions and 10 deletions
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lib/zstd.h
+4 -3
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@@ -528,8 +528,9 @@ ZSTDLIB_API ZSTD_CCtx* ZSTD_createCCtx_advanced(ZSTD_customMem customMem);
* If it needs more memory than available, it will simply error out.
* Note 2 : there is no corresponding "free" function.
* Since workspace was allocated externally, it must be freed externally too.
* Limitation : currently not compatible with internal CDict creation, such as
* ZSTD_CCtx_loadDictionary() or ZSTD_initCStream_usingDict().
* Limitation 1 : currently not compatible with internal CDict creation, such as
* ZSTD_CCtx_loadDictionary() or ZSTD_initCStream_usingDict().
* Limitation 2 : currently not compatible with multi-threading
*/
ZSTDLIB_API ZSTD_CCtx* ZSTD_initStaticCCtx(void* workspace, size_t workspaceSize);
@@ -746,7 +747,7 @@ ZSTDLIB_API size_t ZSTD_CCtx_setPledgedSrcSize(ZSTD_CCtx* cctx, unsigned long lo
* It's also a CPU-heavy operation, with non-negligible impact on latency.
* Note 3 : Dictionary will be used for all future compression jobs.
* To return to "no-dictionary" situation, load a NULL dictionary */
ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary(ZSTD_CCtx* cctx, const void* dict, size_t dictSize); /* Not ready yet ! */
ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary(ZSTD_CCtx* cctx, const void* dict, size_t dictSize);
/*! ZSTD_CCtx_refPrefix() :
* Reference a prefix (content-only dictionary) to bootstrap next compression job.