paramgrill can select manually targetLength
new compression levels
This commit is contained in:
Yann Collet
parent
bd828d9cd1
commit
04b12d8bcb
@ -903,7 +903,7 @@ static size_t ZSTD_count(const BYTE* pIn, const BYTE* pMatch, const BYTE* pInLim
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return (size_t)(pIn - pStart);
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}
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/** ZSTD_count_2segments
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/** ZSTD_count_2segments() :
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* can count match length with ip & match in potentially 2 different segments.
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* convention : on reaching mEnd, match count continue starting from iStart
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*/
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@ -1190,11 +1190,11 @@ void ZSTD_compressBlock_fast_extDict(ZSTD_CCtx* ctx,
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}
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/* *************************************
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/*-*************************************
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* Binary Tree search
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***************************************/
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/** ZSTD_insertBt1() : add one or multiple positions to tree
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* ip : assumed <= iend-8
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/** ZSTD_insertBt1() : add one or multiple positions to tree.
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* ip : assumed <= iend-8 .
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* @return : nb of positions added */
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static U32 ZSTD_insertBt1(ZSTD_CCtx* zc, const BYTE* const ip, const U32 mls, const BYTE* const iend, U32 nbCompares,
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U32 extDict)
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@ -1230,7 +1230,7 @@ static U32 ZSTD_insertBt1(ZSTD_CCtx* zc, const BYTE* const ip, const U32 mls, co
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while (nbCompares-- && (matchIndex > windowLow)) {
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U32* nextPtr = bt + 2*(matchIndex & btMask);
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size_t matchLength = MIN(commonLengthSmaller, commonLengthLarger); /* guaranteed minimum nb of common bytes */
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#if 1 /* note : can create issues when hlog small <= 11 */
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const U32* predictPtr = bt + 2*((matchIndex-1) & btMask); /* written this way, as bt is a roll buffer */
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if (matchIndex == predictedSmall) {
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/* no need to check length, result known */
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@ -1249,7 +1249,7 @@ static U32 ZSTD_insertBt1(ZSTD_CCtx* zc, const BYTE* const ip, const U32 mls, co
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predictedLarge = predictPtr[0] + (predictPtr[0]>0);
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continue;
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}
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#endif
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if ((!extDict) || (matchIndex+matchLength >= dictLimit)) {
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match = base + matchIndex;
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if (match[matchLength] == ip[matchLength])
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@ -1284,7 +1284,7 @@ static U32 ZSTD_insertBt1(ZSTD_CCtx* zc, const BYTE* const ip, const U32 mls, co
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} }
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*smallerPtr = *largerPtr = 0;
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return (matchEndIdx > current + 8) ? matchEndIdx - current - 8 : 1;
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return (matchEndIdx > current + 8) ? (matchEndIdx - current) - 8 : 1;
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}
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@ -2339,12 +2339,12 @@ static const ZSTD_parameters ZSTD_defaultParameters[4][ZSTD_MAX_CLEVEL+1] = {
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{ 0, 0, 23, 24, 23, 4, 5, ZSTD_btlazy2 }, /* level 17 */
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{ 0, 0, 25, 24, 23, 5, 5, ZSTD_btlazy2 }, /* level 18 */
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{ 0, 0, 25, 26, 23, 5, 5, ZSTD_btlazy2 }, /* level 19 */
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{ 0, 0, 26, 27, 25, 9, 5, ZSTD_btlazy2 }, /* level 20 */
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{ 0, 0, 23, 21, 22, 5, 4, ZSTD_btlazy2 }, /* level 21 = 16 + L=4 */ // 41233150 btlazy1=41560211 norep1=42322286
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{ 0, 12, 23, 21, 22, 5, 4, ZSTD_opt }, /* level 22 */
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{ 0, 32, 23, 21, 22, 5, 4, ZSTD_opt }, /* level 23 */
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{ 0, 32, 23, 21, 22, 5, 4, ZSTD_opt_bt }, /* level 24 = 16 + btopt */
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{ 0, 64, 26, 27, 25, 10, 4, ZSTD_opt_bt }, /* level 25 = 20 + btopt */
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{ 0, 12, 22, 20, 21, 3, 5, ZSTD_opt }, /* level 20 */
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{ 0, 16, 23, 21, 22, 4, 4, ZSTD_opt }, /* level 21 */
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{ 0, 32, 25, 25, 24, 5, 4, ZSTD_opt_bt }, /* level 22 */
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{ 0, 64, 25, 26, 24, 6, 4, ZSTD_opt_bt }, /* level 23 */
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{ 0,128, 26, 26, 25, 8, 4, ZSTD_opt_bt }, /* level 24 */
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{ 0,256, 26, 27, 25, 10, 4, ZSTD_opt_bt }, /* level 25 */
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},
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{ /* for srcSize <= 256 KB */
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/* SL, W, C, H, S, L, strat */
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@ -269,7 +269,7 @@ U32 ZSTD_BtGetAllMatches (
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}
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FORCE_INLINE U32 ZSTD_BtGetAllMatches_selectMLS (
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static U32 ZSTD_BtGetAllMatches_selectMLS (
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ZSTD_CCtx* zc, /* Index table will be updated */
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const BYTE* ip, const BYTE* const iLowLimit, const BYTE* const iHighLimit,
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const U32 maxNbAttempts, const U32 matchLengthSearch, ZSTD_match_t* matches, U32 minml)
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@ -297,7 +297,7 @@ U32 ZSTD_BtGetAllMatches_extDict (
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}
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FORCE_INLINE U32 ZSTD_BtGetAllMatches_selectMLS_extDict (
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static U32 ZSTD_BtGetAllMatches_selectMLS_extDict (
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ZSTD_CCtx* zc, /* Index table will be updated */
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const BYTE* ip, const BYTE* const iLowLimit, const BYTE* const iHighLimit,
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const U32 maxNbAttempts, const U32 matchLengthSearch, ZSTD_match_t* matches, U32 minml)
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@ -382,7 +382,7 @@ U32 ZSTD_HcGetAllMatches_generic (
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}
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FORCE_INLINE U32 ZSTD_HcGetAllMatches_selectMLS (
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static U32 ZSTD_HcGetAllMatches_selectMLS (
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ZSTD_CCtx* zc,
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const BYTE* ip, const BYTE* const iLowLimit, const BYTE* const iHighLimit,
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const U32 maxNbAttempts, const U32 matchLengthSearch, ZSTD_match_t* matches, U32 minml)
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@ -396,7 +396,7 @@ FORCE_INLINE U32 ZSTD_HcGetAllMatches_selectMLS (
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}
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}
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FORCE_INLINE U32 ZSTD_HcGetAllMatches_selectMLS_extDict (
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static U32 ZSTD_HcGetAllMatches_selectMLS_extDict (
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ZSTD_CCtx* zc,
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const BYTE* ip, const BYTE* const iLowLimit, const BYTE* const iHighLimit,
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const U32 maxNbAttempts, const U32 matchLengthSearch, ZSTD_match_t* matches, U32 minml)
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@ -769,7 +769,6 @@ _storeSequence: // cur, last_pos, best_mlen, best_off have to be set
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}
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FORCE_INLINE
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void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
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const void* src, size_t srcSize,
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@ -803,7 +802,6 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
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const U32 sufficient_len = ctx->params.targetLength;
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const U32 faster_get_matches = (ctx->params.strategy == ZSTD_opt);
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/* init */
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ZSTD_resetSeqStore(seqStorePtr);
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if ((ip - prefixStart) < REPCODE_STARTVALUE) ip += REPCODE_STARTVALUE;
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@ -1060,9 +1058,7 @@ _storeSequence: // cur, last_pos, best_mlen, best_off have to be set
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u += opt[u].mlen;
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}
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cur = 0;
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while (cur < last_pos) {
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for (cur=0; cur < last_pos; ) {
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U32 litLength;
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ZSTD_LOG_PARSER("%d: price3[%d/%d]=%d off=%d mlen=%d litlen=%d rep=%d rep2=%d\n", (int)(ip-base+cur), cur, last_pos, opt[cur].price, opt[cur].off, opt[cur].mlen, opt[cur].litlen, opt[cur].rep, opt[cur].rep2);
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mlen = opt[cur].mlen;
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@ -930,7 +930,7 @@ int optimizeForSize(char* inFileName)
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}
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int usage(char* exename)
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static int usage(char* exename)
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{
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DISPLAY( "Usage :\n");
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DISPLAY( " %s [arg] file\n", exename);
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@ -940,16 +940,17 @@ int usage(char* exename)
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return 0;
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}
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int usage_advanced(void)
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static int usage_advanced(void)
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{
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DISPLAY( "\nAdvanced options :\n");
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DISPLAY( " -i# : iteration loops [1-9](default : %i)\n", NBLOOPS);
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DISPLAY( " -B# : cut input into blocks of size # (default : single block)\n");
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DISPLAY( " -P# : generated sample compressibility (default : %.1f%%)\n", COMPRESSIBILITY_DEFAULT * 100);
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DISPLAY( " -S : Single run\n");
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return 0;
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}
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int badusage(char* exename)
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static int badusage(char* exename)
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{
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DISPLAY("Wrong parameters\n");
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usage(exename);
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@ -1064,13 +1065,16 @@ int main(int argc, char** argv)
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while ((*argument>= '0') && (*argument<='9'))
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g_params.searchLength *= 10, g_params.searchLength += *argument++ - '0';
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continue;
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case 't': /* strategy */
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g_params.strategy = (ZSTD_strategy)0;
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case 't': /* target length */
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g_params.targetLength = 0;
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argument++;
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while ((*argument>= '0') && (*argument<='9')) {
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g_params.strategy = (ZSTD_strategy)((U32)g_params.strategy *10);
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g_params.strategy = (ZSTD_strategy)((U32)g_params.strategy + *argument++ - '0');
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}
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while ((*argument>= '0') && (*argument<='9'))
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g_params.targetLength *= 10, g_params.targetLength += *argument++ - '0';
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continue;
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case 'S': /* strategy */
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argument++;
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while ((*argument>= '0') && (*argument<='9'))
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g_params.strategy = (ZSTD_strategy)(*argument++ - '0');
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continue;
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case 'L':
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{
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