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Compress LZSA2 raw files one byte shorter

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Emmanuel Marty 2020-06-22 00:13:14 +02:00 committed by GitHub
parent f724663ba8
commit 07c3969432
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 3 additions and 6 deletions
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9
src/shrink_block_v2.c
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@ -1048,7 +1048,7 @@ static int lzsa_write_block_v2(lzsa_compressor *pCompressor, lzsa_match *pBestMa
return -1;
if (pCompressor->flags & LZSA_FLAG_RAW_BLOCK)
pOutData[nOutOffset++] = (nTokenLiteralsLen << 3) | 0x47;
pOutData[nOutOffset++] = (nTokenLiteralsLen << 3) | 0xe7;
else
pOutData[nOutOffset++] = (nTokenLiteralsLen << 3) | 0x00;
nOutOffset = lzsa_write_literals_varlen_v2(pOutData, nOutOffset, nMaxOutDataSize, &nCurNibbleOffset, &nCurFreeNibbles, nNumLiterals);
@ -1081,7 +1081,6 @@ static int lzsa_write_block_v2(lzsa_compressor *pCompressor, lzsa_match *pBestMa
if (nOutOffset >= nMaxOutDataSize)
return -1;
pOutData[nOutOffset++] = 0; /* Match offset */
nOutOffset = lzsa_write_nibble_v2(pOutData, nOutOffset, nMaxOutDataSize, &nCurNibbleOffset, &nCurFreeNibbles, 15); /* Extended match length nibble */
if (nOutOffset < 0) return -1;
@ -1119,12 +1118,12 @@ static int lzsa_write_raw_uncompressed_block_v2(lzsa_compressor *pCompressor, co
int nTokenLiteralsLen = (nNumLiterals >= LITERALS_RUN_LEN_V2) ? LITERALS_RUN_LEN_V2 : nNumLiterals;
int nOutOffset = 0;
int nCommandSize = 8 /* token */ + lzsa_get_literals_varlen_size_v2(nNumLiterals) + (nNumLiterals << 3) + 8 + 4 + 8;
int nCommandSize = 8 /* token */ + lzsa_get_literals_varlen_size_v2(nNumLiterals) + (nNumLiterals << 3) + 4 + 8;
if ((nOutOffset + ((nCommandSize + 7) >> 3)) > nMaxOutDataSize)
return -1;
pCompressor->num_commands = 0;
pOutData[nOutOffset++] = (nTokenLiteralsLen << 3) | 0x47;
pOutData[nOutOffset++] = (nTokenLiteralsLen << 3) | 0xe7;
nOutOffset = lzsa_write_literals_varlen_v2(pOutData, nOutOffset, nMaxOutDataSize, &nCurNibbleOffset, &nCurFreeNibbles, nNumLiterals);
if (nOutOffset < 0) return -1;
@ -1137,8 +1136,6 @@ static int lzsa_write_raw_uncompressed_block_v2(lzsa_compressor *pCompressor, co
/* Emit EOD marker for raw block */
pOutData[nOutOffset++] = 0; /* Match offset */
nOutOffset = lzsa_write_nibble_v2(pOutData, nOutOffset, nMaxOutDataSize, &nCurNibbleOffset, &nCurFreeNibbles, 15); /* Extended match length nibble */
if (nOutOffset < 0) return -1;