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Correct magic data header info and be more verbose about file format.

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Con Kolivas 2011-03-11 22:17:26 +11:00
parent b7996dda45
commit a2d2245b2d
1 changed files with 23 additions and 12 deletions
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35
doc/magic.header.txt
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@ -1,29 +1,40 @@
lrzip-0.50+ file header format
November 2010
lrzip-0.50+ file format
March 2011
Con Kolivas
Byte Content
0-3 LRZI
0->22 Magic
--
23->74 Rzip chunk data
75+ Data blocks
-- repeat
(end-MD5_DIGEST_SIZE)->(end) md5 hash
Magic data:
0->3 LRZI
4 LRZIP Major Version Number
5 LRZIP Minor Version Number
6-14 Source File Size
16-20 LZMA Properties Encoded (lc,lp,pb,fb, and dictionary size)
6->14 Source File Size
16->20 LZMA Properties Encoded (lc,lp,pb,fb, and dictionary size)
21 Flag that md5sum hash is stored at the end of the archive
22 not used
23-48 Stream 1 header data
49-74 Stream 2 header data
Block Data:
Rzip chunk data:
0 Data offsets byte width
1-25 Stream 0 header data
26-50 Stream 1 header data
Stream Header Data:
Byte:
0 Compressed data type
1-8 Compressed data length
9-16 Uncompressed data length
17-24 Next block head
25 Data offsets byte width
26+ Data
End:
0-1 crc data
Data blocks:
0-(end-2) data
end-1-end crc data
lrzip-0.40+ file header format
November 2009