6502
/
lzsa
mirror of https://github.com/emmanuel-marty/lzsa.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Tiny token reduction, ratio increase for some data

This commit is contained in:
Emmanuel Marty 2021-11-28 10:01:11 +01:00 committed by GitHub
parent 61fb2b881e
commit 79fadb350e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 7 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/shrink_block_v1.c
View File

@ -361,13 +361,12 @@ static int lzsa_optimize_command_count_v1(lzsa_compressor *pCompressor, const un
}
}
if ((i + pMatch->length) <= nEndOffset && pMatch->offset > 0 && pMatch->length >= MIN_MATCH_SIZE_V1 &&
if ((i + pMatch->length) < nEndOffset && pMatch->offset > 0 && pMatch->length >= MIN_MATCH_SIZE_V1 &&
pBestMatch[i + pMatch->length].offset > 0 &&
pBestMatch[i + pMatch->length].length >= MIN_MATCH_SIZE_V1 &&
(pMatch->length + pBestMatch[i + pMatch->length].length) >= LEAVE_ALONE_MATCH_SIZE &&
(pMatch->length + pBestMatch[i + pMatch->length].length) <= MAX_VARLEN &&
(i + pMatch->length) > pMatch->offset &&
(i + pMatch->length) > pBestMatch[i + pMatch->length].offset &&
(i + pMatch->length) >= pMatch->offset &&
(i + pMatch->length) >= pBestMatch[i + pMatch->length].offset &&
(i + pMatch->length + pBestMatch[i + pMatch->length].length) <= nEndOffset &&
!memcmp(pInWindow + i - pMatch->offset + pMatch->length,
pInWindow + i + pMatch->length - pBestMatch[i + pMatch->length].offset,
@ -386,6 +385,7 @@ static int lzsa_optimize_command_count_v1(lzsa_compressor *pCompressor, const un
pMatch->length += pBestMatch[i + nMatchLen].length;
pBestMatch[i + nMatchLen].offset = 0;
pBestMatch[i + nMatchLen].length = -1;
nDidReduce = 1;
continue;
}
}

7
src/shrink_block_v2.c
View File

@ -857,13 +857,12 @@ static int lzsa_optimize_command_count_v2(lzsa_compressor *pCompressor, const un
}
}
if ((i + pMatch->length) <= nEndOffset && pMatch->offset > 0 && pMatch->length >= MIN_MATCH_SIZE_V2 &&
if ((i + pMatch->length) < nEndOffset && pMatch->offset > 0 && pMatch->length >= MIN_MATCH_SIZE_V2 &&
pBestMatch[i + pMatch->length].offset > 0 &&
pBestMatch[i + pMatch->length].length >= MIN_MATCH_SIZE_V2 &&
(pMatch->length + pBestMatch[i + pMatch->length].length) >= LEAVE_ALONE_MATCH_SIZE &&
(pMatch->length + pBestMatch[i + pMatch->length].length) <= MAX_VARLEN &&
(i + pMatch->length) > pMatch->offset &&
(i + pMatch->length) > pBestMatch[i + pMatch->length].offset &&
(i + pMatch->length) >= pMatch->offset &&
(i + pMatch->length) >= pBestMatch[i + pMatch->length].offset &&
(i + pMatch->length + pBestMatch[i + pMatch->length].length) <= nEndOffset &&
!memcmp(pInWindow + i - pMatch->offset + pMatch->length,
pInWindow + i + pMatch->length - pBestMatch[i + pMatch->length].offset,