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reduced table sizes for HUF_readDTableX4

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This commit is contained in:
Yann Collet
2016-12-01 18:24:59 -08:00
parent a0d742b1e4
commit b89af20353
3 changed files with 20 additions and 18 deletions
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lib/common/huf.h
+9 -8
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@@ -62,19 +62,19 @@ size_t HUF_compress(void* dst, size_t dstCapacity,
HUF_decompress() :
Decompress HUF data from buffer 'cSrc', of size 'cSrcSize',
into already allocated buffer 'dst', of minimum size 'dstSize'.
`dstSize` : **must** be the ***exact*** size of original (uncompressed) data.
`originalSize` : **must** be the ***exact*** size of original (uncompressed) data.
Note : in contrast with FSE, HUF_decompress can regenerate
RLE (cSrcSize==1) and uncompressed (cSrcSize==dstSize) data,
because it knows size to regenerate.
@return : size of regenerated data (== dstSize),
@return : size of regenerated data (== originalSize),
or an error code, which can be tested using HUF_isError()
*/
size_t HUF_decompress(void* dst, size_t dstSize,
size_t HUF_decompress(void* dst, size_t originalSize,
const void* cSrc, size_t cSrcSize);
/* *** Tool functions *** */
#define HUF_BLOCKSIZE_MAX (128 * 1024)
#define HUF_BLOCKSIZE_MAX (128 * 1024) /*< maximum input size for a single block compressed with HUF_compress */
size_t HUF_compressBound(size_t size); /**< maximum compressed size (worst case) */
/* Error Management */
@@ -85,7 +85,8 @@ const char* HUF_getErrorName(size_t code); /**< provides error code string (us
/* *** Advanced function *** */
/** HUF_compress2() :
* Same as HUF_compress(), but offers direct control over `maxSymbolValue` and `tableLog` */
* Same as HUF_compress(), but offers direct control over `maxSymbolValue` and `tableLog` .
* `tableLog` must be `<= HUF_TABLELOG_MAX` . */
size_t HUF_compress2 (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog);
/** HUF_compress4X_wksp() :
@@ -101,7 +102,7 @@ size_t HUF_compress4X_wksp (void* dst, size_t dstSize, const void* src, size_t s
/* *** Constants *** */
#define HUF_TABLELOG_ABSOLUTEMAX 16 /* absolute limit of HUF_MAX_TABLELOG. Beyond that value, code does not work */
#define HUF_TABLELOG_ABSOLUTEMAX 15 /* absolute limit of HUF_MAX_TABLELOG. Beyond that value, code does not work */
#define HUF_TABLELOG_MAX 12 /* max configured tableLog (for static allocation); can be modified up to HUF_ABSOLUTEMAX_TABLELOG */
#define HUF_TABLELOG_DEFAULT 11 /* tableLog by default, when not specified */
#define HUF_SYMBOLVALUE_MAX 255
@@ -128,9 +129,9 @@ size_t HUF_compress4X_wksp (void* dst, size_t dstSize, const void* src, size_t s
typedef U32 HUF_DTable;
#define HUF_DTABLE_SIZE(maxTableLog) (1 + (1<<(maxTableLog)))
#define HUF_CREATE_STATIC_DTABLEX2(DTable, maxTableLog) \
HUF_DTable DTable[HUF_DTABLE_SIZE((maxTableLog)-1)] = { ((U32)((maxTableLog)-1)*0x1000001) }
HUF_DTable DTable[HUF_DTABLE_SIZE((maxTableLog)-1)] = { ((U32)((maxTableLog)-1) * 0x01000001) }
#define HUF_CREATE_STATIC_DTABLEX4(DTable, maxTableLog) \
HUF_DTable DTable[HUF_DTABLE_SIZE(maxTableLog)] = { ((U32)(maxTableLog)*0x1000001) }
HUF_DTable DTable[HUF_DTABLE_SIZE(maxTableLog)] = { ((U32)(maxTableLog) * 0x01000001) }
/* ****************************************