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Add function to set opaque parameters

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This commit is contained in:
Stella Lau 2017-08-17 19:30:22 -07:00
parent 4169f49171
commit c0221124d5
3 changed files with 156 additions and 39 deletions
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2
lib/common/zstd_internal.h
View File

@ -224,6 +224,8 @@ typedef struct seqDef_s {
typedef struct ZSTD_CCtx_params_s {
ZSTD_compressionParameters cParams;
ZSTD_frameParameters fParams;
int compressionLevel;
} ZSTD_CCtx_params;
typedef struct {

189
lib/compress/zstd_compress.c
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@ -230,45 +230,6 @@ 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);
}
@ -296,6 +257,55 @@ static void ZSTD_cLevelToCParams(ZSTD_CCtx* cctx)
cctx->compressionLevel = ZSTD_CLEVEL_CUSTOM;
}
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; }
params->compressionLevel = ZSTD_CLEVEL_DEFAULT;
return params;
}
size_t ZSTD_initCCtxParams(ZSTD_CCtx_params* params,
ZSTD_compressionParameters cParams)
{
memset(params, 0, sizeof(ZSTD_CCtx_params));
params->cParams = cParams;
params->compressionLevel = ZSTD_CLEVEL_CUSTOM;
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));
params->compressionLevel = compressionLevel;
return params;
}
size_t ZSTD_freeCCtxParams(ZSTD_CCtx_params* params)
{
if (params == NULL) { return 0; }
ZSTD_free(params, ZSTD_defaultCMem);
return 0;
}
static void ZSTD_cLevelToCCtxParams(ZSTD_CCtx_params* params)
{
if (params->compressionLevel == ZSTD_CLEVEL_CUSTOM) return;
// TODO: src size, code duplication
params->cParams = ZSTD_getCParams(params->compressionLevel, 0, 0);
params->compressionLevel = ZSTD_CLEVEL_CUSTOM;
}
#define CLAMPCHECK(val,min,max) { \
if (((val)<(min)) | ((val)>(max))) { \
return ERROR(parameter_outOfBound); \
@ -443,6 +453,107 @@ size_t ZSTD_CCtx_setParameter(ZSTD_CCtx* cctx, ZSTD_cParameter param, unsigned v
}
}
size_t ZSTD_CCtxParam_setParameter(
ZSTD_CCtx_params* params, ZSTD_cParameter param, unsigned value)
{
switch(param)
{
case ZSTD_p_compressionLevel :
if ((int)value > ZSTD_maxCLevel()) value = ZSTD_maxCLevel();
if (value == 0) return 0;
params->compressionLevel = value;
return 0;
case ZSTD_p_windowLog :
if (value == 0) return 0;
CLAMPCHECK(value, ZSTD_WINDOWLOG_MIN, ZSTD_WINDOWLOG_MAX);
ZSTD_cLevelToCCtxParams(params);
params->cParams.windowLog = value;
return 0;
case ZSTD_p_hashLog :
if (value == 0) return 0;
CLAMPCHECK(value, ZSTD_HASHLOG_MIN, ZSTD_HASHLOG_MAX);
ZSTD_cLevelToCCtxParams(params);
params->cParams.hashLog = value;
return 0;
case ZSTD_p_chainLog :
if (value == 0) return 0;
CLAMPCHECK(value, ZSTD_CHAINLOG_MIN, ZSTD_CHAINLOG_MAX);
ZSTD_cLevelToCCtxParams(params);
params->cParams.chainLog = value;
return 0;
case ZSTD_p_searchLog :
if (value == 0) return 0;
CLAMPCHECK(value, ZSTD_SEARCHLOG_MIN, ZSTD_SEARCHLOG_MAX);
ZSTD_cLevelToCCtxParams(params);
params->cParams.searchLog = value;
return 0;
case ZSTD_p_minMatch :
if (value == 0) return 0;
CLAMPCHECK(value, ZSTD_SEARCHLENGTH_MIN, ZSTD_SEARCHLENGTH_MAX);
ZSTD_cLevelToCCtxParams(params);
params->cParams.searchLength = value;
return 0;
case ZSTD_p_targetLength :
if (value == 0) return 0;
CLAMPCHECK(value, ZSTD_TARGETLENGTH_MIN, ZSTD_TARGETLENGTH_MAX);
ZSTD_cLevelToCCtxParams(params);
params->cParams.targetLength = value;
return 0;
case ZSTD_p_compressionStrategy :
if (value == 0) return 0;
CLAMPCHECK(value, (unsigned)ZSTD_fast, (unsigned)ZSTD_btultra);
ZSTD_cLevelToCCtxParams(params);
params->cParams.strategy = (ZSTD_strategy)value;
return 0;
case ZSTD_p_contentSizeFlag :
params->fParams.contentSizeFlag = value > 0;
return 0;
case ZSTD_p_checksumFlag :
params->fParams.checksumFlag = value > 0;
return 0;
case ZSTD_p_dictIDFlag :
params->fParams.noDictIDFlag = (value == 0);
return 0;
case ZSTD_p_dictMode :
ZSTD_STATIC_ASSERT((U32)ZSTD_dm_fullDict > (U32)ZSTD_dm_rawContent);
if (value > (unsigned)ZSTD_dm_fullDict) {
return ERROR(parameter_outOfBound);
}
// cctx->dictMode = (ZSTD_dictMode_e)value;
return 0;
case ZSTD_p_refDictContent :
// cctx->dictContentByRef = value > 0;
return 0;
case ZSTD_p_forceMaxWindow :
// cctx->forceWindow = value > 0;
return 0;
case ZSTD_p_nbThreads :
return 0;
case ZSTD_p_jobSize :
return 0;
case ZSTD_p_overlapSizeLog :
return 0;
default: return ERROR(parameter_unsupported);
}
}
ZSTDLIB_API size_t ZSTD_CCtx_setPledgedSrcSize(ZSTD_CCtx* cctx, unsigned long long pledgedSrcSize)
{
DEBUGLOG(5, " setting pledgedSrcSize to %u", (U32)pledgedSrcSize);

4
lib/zstd.h
View File

@ -616,6 +616,8 @@ ZSTDLIB_API ZSTD_CCtx_params* ZSTD_createAndInitCCtxParams(int compressionLevel,
ZSTDLIB_API size_t ZSTD_initCCtxParams(ZSTD_CCtx_params* params, ZSTD_compressionParameters cParams);
ZSTDLIB_API size_t ZSTD_freeCCtxParams(ZSTD_CCtx_params* params);
ZSTDLIB_API
/*! ZSTD_getCParams() :
* @return ZSTD_compressionParameters structure for a selected compression level and estimated srcSize.
@ -1009,6 +1011,8 @@ typedef enum {
* @result : 0, or an error code (which can be tested with ZSTD_isError()). */
ZSTDLIB_API size_t ZSTD_CCtx_setParameter(ZSTD_CCtx* cctx, ZSTD_cParameter param, unsigned value);
ZSTDLIB_API size_t ZSTD_CCtxParam_setParameter(ZSTD_CCtx_params* params, ZSTD_cParameter param, unsigned value);
/*! ZSTD_CCtx_setPledgedSrcSize() :
* Total input data size to be compressed as a single frame.
* This value will be controlled at the end, and result in error if not respected.