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Add initialization/allocation functions for opaque params

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This commit is contained in:
Stella Lau 2017-08-17 18:45:04 -07:00
parent ade95b8bed
commit 4169f49171
2 changed files with 44 additions and 0 deletions
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38
lib/compress/zstd_compress.c
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@ -230,6 +230,44 @@ static ZSTD_CCtx_params ZSTD_makeCCtxParamsFromCParams(
return cctxParams;
}
ZSTD_CCtx_params* ZSTD_createCCtxParams(void)
{
ZSTD_CCtx_params* params =
(ZSTD_CCtx_params*)ZSTD_calloc(sizeof(ZSTD_CCtx_params),
ZSTD_defaultCMem);
if (!params) { return NULL; }
// TODO
// params->compressionLevel = ZSTD_CLEVEL_DEFAULT;
return params;
}
size_t ZSTD_initCCtxParams(ZSTD_CCtx_params* params,
ZSTD_compressionParameters cParams)
{
CHECK_F( params == NULL );
memset(params, 0, sizeof(ZSTD_CCtx_params));
params->cParams = cParams;
return 0;
}
ZSTD_CCtx_params* ZSTD_createAndInitCCtxParams(
int compressionLevel, unsigned long long estimatedSrcSize,
size_t dictSize)
{
ZSTD_CCtx_params* params = ZSTD_createCCtxParams();
if (params == NULL) { return NULL; }
ZSTD_initCCtxParams(params, ZSTD_getCParams(
compressionLevel, estimatedSrcSize, dictSize));
return params;
}
size_t ZSTD_freeCCtxParams(ZSTD_CCtx_params* params)
{
ZSTD_free(params, ZSTD_defaultCMem);
return 0;
}
static ZSTD_parameters ZSTD_getParamsFromCCtx(const ZSTD_CCtx* cctx) {
return ZSTD_getParamsFromCCtxParams(cctx->appliedParams);

6
lib/zstd.h
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@ -611,6 +611,12 @@ ZSTDLIB_API ZSTD_CDict* ZSTD_initStaticCDict_advanced_opaque(
unsigned byReference, ZSTD_dictMode_e dictMode,
ZSTD_CCtx_params* params);
ZSTDLIB_API ZSTD_CCtx_params* ZSTD_createCCtxParams(void);
ZSTDLIB_API ZSTD_CCtx_params* ZSTD_createAndInitCCtxParams(int compressionLevel, unsigned long long estimatedSrcSize, size_t dictSize);
ZSTDLIB_API size_t ZSTD_initCCtxParams(ZSTD_CCtx_params* params, ZSTD_compressionParameters cParams);
ZSTDLIB_API size_t ZSTD_freeCCtxParams(ZSTD_CCtx_params* params);
/*! ZSTD_getCParams() :
* @return ZSTD_compressionParameters structure for a selected compression level and estimated srcSize.
* `estimatedSrcSize` value is optional, select 0 if not known */