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FSE_compress_wksp() uses less stack space

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Yann Collet
2016-11-30 16:46:13 -08:00
parent d79a9a00d9
commit 5e00b848a8
3 changed files with 27 additions and 27 deletions
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lib/compress/huf_compress.c
+2 -2
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@@ -92,7 +92,7 @@ size_t HUF_writeCTable (void* dst, size_t maxDstSize,
BYTE huffWeight[HUF_SYMBOLVALUE_MAX];
BYTE* op = (BYTE*)dst;
#define MAX_FSE_TABLELOG_FOR_HUFF_HEADER 6
BYTE scratchBuffer[1<<MAX_FSE_TABLELOG_FOR_HUFF_HEADER];
FSE_CTable scratchBuffer[FSE_WKSP_SIZE_U32(MAX_FSE_TABLELOG_FOR_HUFF_HEADER, HUF_TABLELOG_MAX)];
U32 n;
/* check conditions */
@@ -106,7 +106,7 @@ size_t HUF_writeCTable (void* dst, size_t maxDstSize,
huffWeight[n] = bitsToWeight[CTable[n].nbBits];
/* attempt weights compression by FSE */
{ size_t const size = FSE_compress_wksp(op+1, maxDstSize-1, huffWeight, maxSymbolValue, HUF_TABLELOG_MAX, MAX_FSE_TABLELOG_FOR_HUFF_HEADER, scratchBuffer);
{ size_t const size = FSE_compress_wksp(op+1, maxDstSize-1, huffWeight, maxSymbolValue, HUF_TABLELOG_MAX, MAX_FSE_TABLELOG_FOR_HUFF_HEADER, scratchBuffer, sizeof(scratchBuffer));
if (FSE_isError(size)) return size;
if ((size>1) & (size < maxSymbolValue/2)) { /* FSE compressed */
op[0] = (BYTE)size;