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author | Przemyslaw Skibinski <inikep@gmail.com> | 2016-12-07 11:17:24 (GMT) |
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committer | Przemyslaw Skibinski <inikep@gmail.com> | 2016-12-07 11:17:24 (GMT) |
commit | 77b051ed7bf383b97db43e4fc4b523df3b003e8a (patch) | |
tree | 86b53c8e7b024d02f8c70d2d040f4069985351b3 /lib/lz4opt.h | |
parent | e3fee94742f9027aa2d27fae6458ce285889552e (diff) | |
download | lz4-77b051ed7bf383b97db43e4fc4b523df3b003e8a.zip lz4-77b051ed7bf383b97db43e4fc4b523df3b003e8a.tar.gz lz4-77b051ed7bf383b97db43e4fc4b523df3b003e8a.tar.bz2 |
improve code formatting
Diffstat (limited to 'lib/lz4opt.h')
-rw-r--r-- | lib/lz4opt.h | 100 |
1 files changed, 34 insertions, 66 deletions
diff --git a/lib/lz4opt.h b/lib/lz4opt.h index 0bffa3b..2eaba4f 100644 --- a/lib/lz4opt.h +++ b/lib/lz4opt.h @@ -105,7 +105,6 @@ FORCE_INLINE int LZ4HC_BinTree_GetAllMatches ( /* First Match */ HashPos = &HashTable[LZ4HC_hashPtr(ip)]; matchIndex = *HashPos; - *HashPos = current; ctx->nextToUpdate++; @@ -114,20 +113,15 @@ FORCE_INLINE int LZ4HC_BinTree_GetAllMatches ( ptr1 = &DELTANEXTMAXD(current*2); delta0 = delta1 = current - matchIndex; - while ((matchIndex < current) && (matchIndex>=lowLimit) && (nbAttempts)) - { + while ((matchIndex < current) && (matchIndex>=lowLimit) && (nbAttempts)) { nbAttempts--; mlt = 0; if (matchIndex >= dictLimit) { match = base + matchIndex; - - if (LZ4_read32(match) == LZ4_read32(ip)) - { + if (LZ4_read32(match) == LZ4_read32(ip)) { mlt = MINMATCH + LZ4_count(ip+MINMATCH, match+MINMATCH, iHighLimit); - - if (mlt > best_mlen) - { + if (mlt > best_mlen) { best_mlen = mlt; matches[mnum].off = (int)(ip - match); matches[mnum].len = (int)mlt; @@ -141,16 +135,14 @@ FORCE_INLINE int LZ4HC_BinTree_GetAllMatches ( else { match = dictBase + matchIndex; - if (LZ4_read32(match) == LZ4_read32(ip)) - { + if (LZ4_read32(match) == LZ4_read32(ip)) { const BYTE* vLimit = ip + (dictLimit - matchIndex); if (vLimit > iHighLimit) vLimit = iHighLimit; mlt = LZ4_count(ip+MINMATCH, match+MINMATCH, vLimit) + MINMATCH; if ((ip+mlt == vLimit) && (vLimit < iHighLimit)) mlt += LZ4_count(ip+mlt, base+dictLimit, iHighLimit); - if (mlt > best_mlen) - { + if (mlt > best_mlen) { best_mlen = mlt; matches[mnum].off = (int)(ip - match); matches[mnum].len = (int)mlt; @@ -162,21 +154,18 @@ FORCE_INLINE int LZ4HC_BinTree_GetAllMatches ( } } - if (*(ip+mlt) < *(match+mlt)) - { + if (*(ip+mlt) < *(match+mlt)) { *ptr0 = delta0; ptr0 = &DELTANEXTMAXD(matchIndex*2); - // printf("delta0=%d\n", delta0); + /* printf("delta0=%d\n", delta0); */ if (*ptr0 == (U16)-1) break; delta0 = *ptr0; delta1 += delta0; matchIndex -= delta0; - } - else - { + } else { *ptr1 = delta1; ptr1 = &DELTANEXTMAXD(matchIndex*2+1); - // printf("delta1=%d\n", delta1); + /* printf("delta1=%d\n", delta1); */ if (*ptr1 == (U16)-1) break; delta1 = *ptr1; delta0 += delta1; @@ -234,8 +223,7 @@ static int LZ4HC_compress_optimal ( ip++; /* Main Loop */ - while (ip < mflimit) - { + while (ip < mflimit) { memset(opt, 0, sizeof(LZ4HC_optimal_t)); last_pos = 0; llen = ip - anchor; @@ -256,13 +244,11 @@ static int LZ4HC_compress_optimal ( } // set prices using matches at position = 0 - for (i = 0; i < match_num; i++) - { + for (i = 0; i < match_num; i++) { mlen = (i>0) ? (size_t)matches[i-1].len+1 : best_mlen; best_mlen = (matches[i].len < LZ4_OPT_NUM) ? matches[i].len : LZ4_OPT_NUM; LZ4_LOG_PARSER("%d: start Found mlen=%d off=%d best_mlen=%d last_pos=%d\n", (int)(ip-source), matches[i].len, matches[i].off, best_mlen, last_pos); - while (mlen <= best_mlen) - { + while (mlen <= best_mlen) { litlen = 0; price = LZ4HC_get_price(llen + litlen, mlen - MINMATCH) - llen; if (mlen > last_pos || price < (size_t)opt[mlen].price) @@ -276,40 +262,33 @@ static int LZ4HC_compress_optimal ( opt[0].mlen = opt[1].mlen = 1; // check further positions - for (cur = 1; cur <= last_pos; cur++) - { - inr = ip + cur; + for (cur = 1; cur <= last_pos; cur++) { + inr = ip + cur; - if (opt[cur-1].mlen == 1) - { + if (opt[cur-1].mlen == 1) { litlen = opt[cur-1].litlen + 1; - if (cur != litlen) - { + if (cur != litlen) { price = opt[cur - litlen].price + LZ4_LIT_ONLY_COST(litlen); LZ4_LOG_PRICE("%d: TRY1 opt[%d].price=%d price=%d cur=%d litlen=%d\n", (int)(inr-source), cur - litlen, opt[cur - litlen].price, price, cur, litlen); - } - else - { + } else { price = LZ4_LIT_ONLY_COST(llen + litlen) - llen; LZ4_LOG_PRICE("%d: TRY2 price=%d cur=%d litlen=%d llen=%d\n", (int)(inr-source), price, cur, litlen, llen); } - } - else - { + } else { litlen = 1; price = opt[cur - 1].price + LZ4_LIT_ONLY_COST(litlen); LZ4_LOG_PRICE("%d: TRY3 price=%d cur=%d litlen=%d litonly=%d\n", (int)(inr-source), price, cur, litlen, LZ4_LIT_ONLY_COST(litlen)); - } + } - mlen = 1; - best_mlen = 0; - LZ4_LOG_PARSER("%d: TRY price=%d opt[%d].price=%d\n", (int)(inr-source), price, cur, opt[cur].price); + mlen = 1; + best_mlen = 0; + LZ4_LOG_PARSER("%d: TRY price=%d opt[%d].price=%d\n", (int)(inr-source), price, cur, opt[cur].price); - if (cur > last_pos || price <= (size_t)opt[cur].price) // || ((price == opt[cur].price) && (opt[cur-1].mlen == 1) && (cur != litlen))) + if (cur > last_pos || price <= (size_t)opt[cur].price) // || ((price == opt[cur].price) && (opt[cur-1].mlen == 1) && (cur != litlen))) SET_PRICE(cur, mlen, best_mlen, litlen, price); - if (cur == last_pos) break; + if (cur == last_pos) break; LZ4_LOG_PARSER("%d: CURRENT price[%d/%d]=%d off=%d mlen=%d litlen=%d\n", (int)(inr-source), cur, last_pos, opt[cur].price, opt[cur].off, opt[cur].mlen, opt[cur].litlen); @@ -318,8 +297,7 @@ static int LZ4HC_compress_optimal ( match_num = LZ4HC_BinTree_GetAllMatches(ctx, inr, matchlimit, best_mlen, matches); LZ4_LOG_PARSER("%d: LZ4HC_BinTree_GetAllMatches match_num=%d\n", (int)(inr-source), match_num); - if (match_num > 0 && (size_t)matches[match_num-1].len > sufficient_len) - { + if (match_num > 0 && (size_t)matches[match_num-1].len > sufficient_len) { cur -= matches[match_num-1].back; best_mlen = matches[match_num-1].len; best_off = matches[match_num-1].off; @@ -328,8 +306,7 @@ static int LZ4HC_compress_optimal ( } // set prices using matches at position = cur - for (i = 0; i < match_num; i++) - { + for (i = 0; i < match_num; i++) { mlen = (i>0) ? (size_t)matches[i-1].len+1 : best_mlen; cur2 = cur - matches[i].back; best_mlen = (cur2 + matches[i].len < LZ4_OPT_NUM) ? (size_t)matches[i].len : LZ4_OPT_NUM - cur2; @@ -338,27 +315,22 @@ static int LZ4HC_compress_optimal ( if (mlen < (size_t)matches[i].back + 1) mlen = matches[i].back + 1; - while (mlen <= best_mlen) - { - if (opt[cur2].mlen == 1) - { + while (mlen <= best_mlen) { + if (opt[cur2].mlen == 1) { litlen = opt[cur2].litlen; if (cur2 != litlen) price = opt[cur2 - litlen].price + LZ4HC_get_price(litlen, mlen - MINMATCH); else price = LZ4HC_get_price(llen + litlen, mlen - MINMATCH) - llen; - } - else - { + } else { litlen = 0; price = opt[cur2].price + LZ4HC_get_price(litlen, mlen - MINMATCH); } LZ4_LOG_PARSER("%d: Found2 pred=%d mlen=%d best_mlen=%d off=%d price=%d litlen=%d price[%d]=%d\n", (int)(inr-source), matches[i].back, mlen, best_mlen, matches[i].off, price, litlen, cur - litlen, opt[cur - litlen].price); // if (cur2 + mlen > last_pos || ((matches[i].off != opt[cur2 + mlen].off) && (price < opt[cur2 + mlen].price))) - if (cur2 + mlen > last_pos || price < (size_t)opt[cur2 + mlen].price) - { + if (cur2 + mlen > last_pos || price < (size_t)opt[cur2 + mlen].price) { SET_PRICE(cur2 + mlen, mlen, matches[i].off, litlen, price); } @@ -373,8 +345,7 @@ static int LZ4HC_compress_optimal ( cur = last_pos - best_mlen; encode: // cur, last_pos, best_mlen, best_off have to be set - for (i = 1; i <= last_pos; i++) - { + for (i = 1; i <= last_pos; i++) { LZ4_LOG_PARSER("%d: price[%d/%d]=%d off=%d mlen=%d litlen=%d\n", (int)(ip-source+i), i, last_pos, opt[i].price, opt[i].off, opt[i].mlen, opt[i].litlen); } @@ -382,8 +353,7 @@ encode: // cur, last_pos, best_mlen, best_off have to be set opt[0].mlen = 1; - while (1) - { + while (1) { mlen = opt[cur].mlen; offset = opt[cur].off; opt[cur].mlen = (int)best_mlen; @@ -394,16 +364,14 @@ encode: // cur, last_pos, best_mlen, best_off have to be set cur -= mlen; } - for (i = 0; i <= last_pos;) - { + for (i = 0; i <= last_pos;) { LZ4_LOG_PARSER("%d: price2[%d/%d]=%d off=%d mlen=%d litlen=%d\n", (int)(ip-source+i), i, last_pos, opt[i].price, opt[i].off, opt[i].mlen, opt[i].litlen); i += opt[i].mlen; } cur = 0; - while (cur < last_pos) - { + while (cur < last_pos) { LZ4_LOG_PARSER("%d: price3[%d/%d]=%d off=%d mlen=%d litlen=%d\n", (int)(ip-source+cur), cur, last_pos, opt[cur].price, opt[cur].off, opt[cur].mlen, opt[cur].litlen); mlen = opt[cur].mlen; if (mlen == 1) { ip++; cur++; continue; } |