U32 nextToUpdate; /* index from which to continue dictionary update */
U32 nextToUpdate3; /* index from which to continue dictionary update */
U32 hashLog3; /* dispatch table : larger == faster, more memory */
- U32 targetSrcSize; /* optimize compression for this source size */
U32 loadedDictEnd;
U32 stage;
ZSTD_parameters params;
void* workSpace;
+ size_t targetSrcSize; /* optimize compression for this source size */
size_t workSpaceSize;
size_t blockSize;
size_t hbSize;
printf("pos %6u : %3u literals & match %3u bytes at distance %6u \n",
(U32)(literals - g_start), (U32)litLength, (U32)matchCode+MINMATCH, (U32)offsetCode);
#endif
-#if ZSTD_OPT_DEBUG == 3
- if (offsetCode == 0) seqStorePtr->realRepSum++;
- seqStorePtr->realSeqSum++;
- seqStorePtr->realMatchSum += matchCode;
- seqStorePtr->realLitSum += litLength;
-#endif
+ ZSTD_statsUpdatePrices(&seqStorePtr->stats, litLength, literals, offsetCode, matchCode);
/* copy Literals */
ZSTD_wildcopy(seqStorePtr->lit, literals, litLength);
{ size_t const lastLLSize = iend - anchor;
memcpy(seqStorePtr->lit, anchor, lastLLSize);
seqStorePtr->lit += lastLLSize;
+ ZSTD_statsUpdatePrices(&seqStorePtr->stats, lastLLSize, anchor, 0, 0);
}
}
}
+
+
static size_t ZSTD_compress_generic (ZSTD_CCtx* zc,
void* dst, size_t dstCapacity,
const void* src, size_t srcSize)
BYTE* const ostart = (BYTE*)dst;
BYTE* op = ostart;
const U32 maxDist = 1 << zc->params.windowLog;
-#if ZSTD_OPT_DEBUG == 3
- seqStore_t* ssPtr = &zc->seqStore;
- static U32 priceFunc = 0;
- ssPtr->realMatchSum = ssPtr->realLitSum = ssPtr->realSeqSum = ssPtr->realRepSum = 1;
- ssPtr->priceFunc = priceFunc;
-#endif
+ ZSTD_stats_t* stats = &zc->seqStore.stats;
+
+ ZSTD_statsInit(stats);
while (remaining) {
size_t cSize;
+ ZSTD_statsResetFreqs(stats);
if (dstCapacity < ZSTD_blockHeaderSize + MIN_CBLOCK_SIZE) return ERROR(dstSize_tooSmall); /* not enough space to store compressed block */
if (remaining < blockSize) blockSize = remaining;
op += cSize;
}
-#if ZSTD_OPT_DEBUG == 3
- ssPtr->realMatchSum += ssPtr->realSeqSum * ((zc->params.searchLength == 3) ? 3 : 4);
- printf("avgMatchL=%.2f avgLitL=%.2f match=%.1f%% lit=%.1f%% reps=%d seq=%d priceFunc=%d\n", (float)ssPtr->realMatchSum/ssPtr->realSeqSum, (float)ssPtr->realLitSum/ssPtr->realSeqSum, 100.0*ssPtr->realMatchSum/(ssPtr->realMatchSum+ssPtr->realLitSum), 100.0*ssPtr->realLitSum/(ssPtr->realMatchSum+ssPtr->realLitSum), ssPtr->realRepSum, ssPtr->realSeqSum, ssPtr->priceFunc);
- priceFunc++;
-#endif
-
+ ZSTD_statsPrint(stats, zc->params.searchLength);
return op-ostart;
}
int tableID = ((srcSize-1) <= 256 KB) + ((srcSize-1) <= 128 KB) + ((srcSize-1) <= 16 KB); /* intentional underflow for srcSizeHint == 0 */
if (compressionLevel<=0) compressionLevel = 1;
if (compressionLevel > ZSTD_MAX_CLEVEL) compressionLevel = ZSTD_MAX_CLEVEL;
-#if ZSTD_OPT_DEBUG >= 1
- tableID=0;
-#endif
result = ZSTD_defaultParameters[tableID][compressionLevel];
result.srcSize = srcSize;
return result;
--- /dev/null
+/*
+ zstd - standard compression library
+ Header File for static linking only
+ Copyright (C) 2014-2016, Yann Collet.
+
+ BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the following disclaimer
+ in the documentation and/or other materials provided with the
+ distribution.
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ You can contact the author at :
+ - zstd homepage : http://www.zstd.net
+*/
+#ifndef ZSTD_STATS_H
+#define ZSTD_STATS_H
+
+
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+/*-*************************************
+* Dependencies
+***************************************/
+//#include "zstd.h"
+//#include "mem.h"
+
+
+/*-*************************************
+* Constants
+***************************************/
+//#define ZSTD_MAGICNUMBER 0xFD2FB526 /* v0.6 */
+
+
+/*-*************************************
+* Types
+***************************************/
+typedef struct {
+ U32 priceOffset, priceOffCode, priceMatchLength, priceLiteral, priceLitLength, priceDumpsLength;
+ U32 totalMatchSum, totalLitSum, totalSeqSum, totalRepSum;
+ U32 litSum, matchLengthSum, litLengthSum, offCodeSum;
+ U32 matchLengthFreq[1<<MLbits];
+ U32 litLengthFreq[1<<LLbits];
+ U32 litFreq[1<<Litbits];
+ U32 offCodeFreq[1<<Offbits];
+} ZSTD_stats_t;
+
+
+/*-*************************************
+* Advanced functions
+***************************************/
+MEM_STATIC void ZSTD_statsPrint(ZSTD_stats_t* stats, U32 searchLength)
+{
+ stats->totalMatchSum += stats->totalSeqSum * ((searchLength == 3) ? 3 : 4);
+ printf("avgMatchL=%.2f avgLitL=%.2f match=%.1f%% lit=%.1f%% reps=%d seq=%d\n", (float)stats->totalMatchSum/stats->totalSeqSum, (float)stats->totalLitSum/stats->totalSeqSum, 100.0*stats->totalMatchSum/(stats->totalMatchSum+stats->totalLitSum), 100.0*stats->totalLitSum/(stats->totalMatchSum+stats->totalLitSum), stats->totalRepSum, stats->totalSeqSum);
+ printf("SumBytes=%d Offset=%d OffCode=%d Match=%d Literal=%d LitLength=%d DumpsLength=%d\n", (stats->priceOffset+stats->priceOffCode+stats->priceMatchLength+stats->priceLiteral+stats->priceLitLength+stats->priceDumpsLength)/8, stats->priceOffset/8, stats->priceOffCode/8, stats->priceMatchLength/8, stats->priceLiteral/8, stats->priceLitLength/8, stats->priceDumpsLength/8);
+}
+
+MEM_STATIC void ZSTD_statsInit(ZSTD_stats_t* stats)
+{
+ stats->totalLitSum = stats->totalMatchSum = stats->totalSeqSum = stats->totalRepSum = 1;
+ stats->priceOffset = stats->priceOffCode = stats->priceMatchLength = stats->priceLiteral = stats->priceLitLength = stats->priceDumpsLength = 0;
+}
+
+MEM_STATIC void ZSTD_statsResetFreqs(ZSTD_stats_t* stats)
+{
+ unsigned u;
+
+ stats->litSum = (1<<Litbits);
+ stats->litLengthSum = (1<<LLbits);
+ stats->matchLengthSum = (1<<MLbits);
+ stats->offCodeSum = (1<<Offbits);
+
+ for (u=0; u<=MaxLit; u++)
+ stats->litFreq[u] = 1;
+ for (u=0; u<=MaxLL; u++)
+ stats->litLengthFreq[u] = 1;
+ for (u=0; u<=MaxML; u++)
+ stats->matchLengthFreq[u] = 1;
+ for (u=0; u<=MaxOff; u++)
+ stats->offCodeFreq[u] = 1;
+}
+
+MEM_STATIC void ZSTD_statsUpdatePrices(ZSTD_stats_t* stats, U32 litLength, const BYTE* literals, U32 offset, U32 matchLength)
+{
+ /* offset */
+ BYTE offCode = offset ? (BYTE)ZSTD_highbit(offset+1) + 1 : 0;
+ stats->priceOffCode += ZSTD_highbit(stats->offCodeSum+1) - ZSTD_highbit(stats->offCodeFreq[offCode]+1);
+ stats->priceOffset += (offCode-1) + (!offCode);
+
+ /* match Length */
+ stats->priceDumpsLength += ((matchLength >= MaxML)<<3) + ((matchLength >= 255+MaxML)<<4) + ((matchLength>=(1<<15))<<3);
+ stats->priceMatchLength += ZSTD_highbit(stats->matchLengthSum+1) - ZSTD_highbit(stats->matchLengthFreq[(matchLength >= MaxML) ? MaxML : matchLength]+1);
+
+ if (litLength) {
+ /* literals */
+ U32 u;
+ stats->priceLiteral += litLength * ZSTD_highbit(stats->litSum+1);
+ for (u=0; u < litLength; u++)
+ stats->priceLiteral -= ZSTD_highbit(stats->litFreq[literals[u]]+1);
+
+ /* literal Length */
+ stats->priceDumpsLength += ((litLength >= MaxLL)<<3) + ((litLength >= 255+MaxLL)<<4) + ((litLength>=(1<<15))<<3);
+ stats->priceLitLength += ZSTD_highbit(stats->litLengthSum+1) - ZSTD_highbit(stats->litLengthFreq[(litLength >= MaxLL) ? MaxLL : litLength]+1);
+ } else {
+ stats->priceLitLength += ZSTD_highbit(stats->litLengthSum+1) - ZSTD_highbit(stats->litLengthFreq[0]+1);
+ }
+
+
+ if (offset == 0) stats->totalRepSum++;
+ stats->totalSeqSum++;
+ stats->totalMatchSum += matchLength;
+ stats->totalLitSum += litLength;
+
+ U32 u;
+ /* literals */
+ stats->litSum += litLength;
+ for (u=0; u < litLength; u++)
+ stats->litFreq[literals[u]]++;
+
+ /* literal Length */
+ stats->litLengthSum++;
+ if (litLength >= MaxLL)
+ stats->litLengthFreq[MaxLL]++;
+ else
+ stats->litLengthFreq[litLength]++;
+
+ /* match offset */
+ stats->offCodeSum++;
+ stats->offCodeFreq[offCode]++;
+
+ /* match Length */
+ stats->matchLengthSum++;
+ if (matchLength >= MaxML)
+ stats->matchLengthFreq[MaxML]++;
+ else
+ stats->matchLengthFreq[matchLength]++;
+}
+
+
+
+#if defined (__cplusplus)
+}
+#endif
+
+#endif /* ZSTD_STATIC_H */
projects / thirdparty / zstd.git / commitdiff
