+++ /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
-
-
-/*-*************************************
-* Types
-***************************************/
-struct ZSTD_stats_s {
- U32 priceOffset, priceOffCode, priceMatchLength, priceLiteral, priceLitLength;
- U32 totalMatchSum, totalLitSum, totalSeqSum, totalRepSum;
- U32 litSum, matchLengthSum, litLengthSum, offCodeSum;
- U32 matchLengthFreq[MaxML+1];
- U32 litLengthFreq[MaxLL+1];
- U32 litFreq[1<<Litbits];
- U32 offCodeFreq[MaxOff+1];
-};
-
-
-/*-*************************************
-* Stats functions
-***************************************/
-MEM_STATIC ZSTD_stats_t* ZSTD_statsAlloc() { return malloc(sizeof(ZSTD_stats_t)); }
-MEM_STATIC void ZSTD_statsFree(struct ZSTD_stats_s* stats) { free(stats); }
-
-MEM_STATIC void ZSTD_statsPrint(ZSTD_stats_t* stats, U32 searchLength)
-{
- stats->totalMatchSum += stats->totalSeqSum * ((searchLength == 3) ? 3 : 4);
- printf("\navgMatchL=%.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\n", (stats->priceOffset+stats->priceOffCode+stats->priceMatchLength+stats->priceLiteral+stats->priceLitLength)/8, stats->priceOffset/8, stats->priceOffCode/8, stats->priceMatchLength/8, stats->priceLiteral/8, stats->priceLitLength/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 = 0;
-}
-
-
-MEM_STATIC void ZSTD_statsResetFreqs(ZSTD_stats_t* stats)
-{
- unsigned u;
-
- stats->litSum = (2<<Litbits);
- stats->litLengthSum = MaxLL+1;
- stats->matchLengthSum = MaxML+1;
- stats->offCodeSum = (MaxOff+1);
-
- 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, size_t litLength, const BYTE* literals, size_t offset, size_t matchLength)
-{
- U32 u;
- /* literals */
- stats->priceLiteral += litLength * ZSTD_highbit(stats->litSum+1);
- for (u=0; u < litLength; u++)
- stats->priceLiteral -= ZSTD_highbit(stats->litFreq[literals[u]]+1);
- stats->litSum += litLength;
- for (u=0; u < litLength; u++)
- stats->litFreq[literals[u]]++;
-
- /* literal Length */
- { static const BYTE LL_Code[64] = { 0, 1, 2, 3, 4, 5, 6, 7,
- 8, 9, 10, 11, 12, 13, 14, 15,
- 16, 16, 17, 17, 18, 18, 19, 19,
- 20, 20, 20, 20, 21, 21, 21, 21,
- 22, 22, 22, 22, 22, 22, 22, 22,
- 23, 23, 23, 23, 23, 23, 23, 23,
- 24, 24, 24, 24, 24, 24, 24, 24,
- 24, 24, 24, 24, 24, 24, 24, 24 };
- const BYTE LL_deltaCode = 19;
- const BYTE llCode = (litLength>63) ? (BYTE)ZSTD_highbit(litLength) + LL_deltaCode : LL_Code[litLength];
- if (litLength) {
- stats->priceLitLength += LL_bits[llCode] + ZSTD_highbit(stats->litLengthSum+1) - ZSTD_highbit(stats->litLengthFreq[llCode]+1);
- } else {
- stats->priceLitLength += ZSTD_highbit(stats->litLengthSum+1) - ZSTD_highbit(stats->litLengthFreq[0]+1);
- }
- stats->litLengthFreq[llCode]++;
- stats->litLengthSum++;
- }
-
- /* match offset */
- { BYTE offCode = (BYTE)ZSTD_highbit(offset+1);
- stats->priceOffCode += ZSTD_highbit(stats->offCodeSum+1) - ZSTD_highbit(stats->offCodeFreq[offCode]+1);
- stats->priceOffset += offCode;
- stats->offCodeSum++;
- stats->offCodeFreq[offCode]++;
- }
-
- /* match Length */
- { static const BYTE ML_Code[128] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
- 32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 36, 36, 37, 37, 37, 37,
- 38, 38, 38, 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, 39, 39, 39,
- 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
- 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41,
- 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42,
- 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42 };
- const BYTE ML_deltaCode = 36;
- const BYTE mlCode = (matchLength>127) ? (BYTE)ZSTD_highbit(matchLength) + ML_deltaCode : ML_Code[matchLength];
- stats->priceMatchLength += ML_bits[mlCode] + ZSTD_highbit(stats->matchLengthSum+1) - ZSTD_highbit(stats->matchLengthFreq[mlCode]+1);
- stats->matchLengthFreq[mlCode]++;
- stats->matchLengthSum++;
- }
-
- if (offset == 0) stats->totalRepSum++;
- stats->totalSeqSum++;
- stats->totalMatchSum += matchLength;
- stats->totalLitSum += litLength;
-}
-
-
-#if defined (__cplusplus)
-}
-#endif
-
-#endif /* ZSTD_STATIC_H */
if ((!extDict) || (matchIndex+matchLength >= dictLimit)) {
match = base + matchIndex;
if (match[matchLength] == ip[matchLength]) {
-#if ZSTD_OPT_DEBUG >= 5
- size_t ml;
- if (matchIndex < dictLimit)
- ml = ZSTD_count_2segments(ip, dictBase + matchIndex, iLimit, dictEnd, prefixStart);
- else
- ml = ZSTD_count(ip, match, ip+matchLength);
- if (ml < matchLength)
- printf("%d: ERROR_NOEXT: offset=%d matchLength=%d matchIndex=%d dictLimit=%d ml=%d\n", current, (int)(current - matchIndex), (int)matchLength, (int)matchIndex, (int)dictLimit, (int)ml), exit(0);
-#endif
matchLength += ZSTD_count(ip+matchLength+1, match+matchLength+1, iLimit) +1;
}
} else {
match = dictBase + matchIndex;
-#if ZSTD_OPT_DEBUG >= 5
- if (memcmp(match, ip, matchLength) != 0)
- printf("%d: ERROR_EXT: matchLength=%d ZSTD_count=%d\n", current, (int)matchLength, (int)ZSTD_count_2segments(ip+matchLength, match+matchLength, iLimit, dictEnd, prefixStart)), exit(0);
-#endif
matchLength += ZSTD_count_2segments(ip+matchLength, match+matchLength, iLimit, dictEnd, prefixStart);
ZSTD_LOG_PARSER("%d: ZSTD_INSERTBTANDGETALLMATCHES=%d offset=%d dictBase=%p dictEnd=%p prefixStart=%p ip=%p match=%p\n", (int)current, (int)matchLength, (int)(current - matchIndex), dictBase, dictEnd, prefixStart, ip, match);
if (matchIndex+matchLength >= dictLimit)
ZSTD_LOG_ENCODE("%d/%d: ENCODE literals=%d mlen=%d off=%d rep[0]=%d rep[1]=%d\n", (int)(ip-base), (int)(iend-base), (int)(litLength), (int)mlen, (int)(offset), (int)rep[0], (int)rep[1]);
-#if ZSTD_OPT_DEBUG >= 5
- U32 ml2;
- if (offset+1 > ZSTD_REP_MOVE_OPT)
- ml2 = (U32)ZSTD_count(ip, ip-(offset+1-ZSTD_REP_MOVE_OPT), iend);
- else
- ml2 = (U32)ZSTD_count(ip, ip-rep[0], iend);
- if ((offset >= 8) && (ml2 < mlen || ml2 < minMatch)) {
- printf("%d: ERROR_NoExt iend=%d mlen=%d offset=%d ml2=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset, (int)ml2); exit(0); }
- if (ip < anchor) {
- printf("%d: ERROR_NoExt ip < anchor iend=%d mlen=%d offset=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset); exit(0); }
- if (ip + mlen > iend) {
- printf("%d: ERROR_NoExt ip + mlen >= iend iend=%d mlen=%d offset=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset); exit(0); }
-#endif
-
ZSTD_updatePrice(seqStorePtr, litLength, anchor, offset, mlen-MINMATCH);
ZSTD_storeSeq(seqStorePtr, litLength, anchor, offset, mlen-MINMATCH);
anchor = ip = ip + mlen;
ZSTD_LOG_ENCODE("%d/%d: ENCODE literals=%d mlen=%d off=%d rep[0]=%d rep[1]=%d\n", (int)(ip-base), (int)(iend-base), (int)(litLength), (int)mlen, (int)(offset), (int)rep[0], (int)rep[1]);
-#if ZSTD_OPT_DEBUG >= 5
- U32 ml2;
- if (offset+1 > ZSTD_REP_MOVE_OPT) {
- best_off = offset+1 - ZSTD_REP_MOVE_OPT;
- if (best_off > (size_t)(ip - prefixStart)) {
- const BYTE* match = dictEnd - (best_off - (ip - prefixStart));
- ml2 = ZSTD_count_2segments(ip, match, iend, dictEnd, prefixStart);
- ZSTD_LOG_PARSER("%d: ZSTD_count_2segments=%d offset=%d dictBase=%p dictEnd=%p prefixStart=%p ip=%p match=%p\n", (int)current, (int)ml2, (int)best_off, dictBase, dictEnd, prefixStart, ip, match);
- }
- else ml2 = (U32)ZSTD_count(ip, ip-best_off, iend);
- }
- else ml2 = (U32)ZSTD_count(ip, ip-rep[0], iend);
- if ((offset >= 8) && (ml2 < mlen || ml2 < minMatch)) {
- printf("%d: ERROR_Ext iend=%d mlen=%d offset=%d ml2=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset, (int)ml2); exit(0); }
- if (ip < anchor) {
- printf("%d: ERROR_Ext ip < anchor iend=%d mlen=%d offset=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset); exit(0); }
- if (ip + mlen > iend) {
- printf("%d: ERROR_Ext ip + mlen >= iend iend=%d mlen=%d offset=%d\n", (int)(ip - base), (int)(iend - ip), (int)mlen, (int)offset); exit(0); }
-#endif
-
ZSTD_updatePrice(seqStorePtr, litLength, anchor, offset, mlen-MINMATCH);
ZSTD_storeSeq(seqStorePtr, litLength, anchor, offset, mlen-MINMATCH);
anchor = ip = ip + mlen;