I'm interested on documentation of the deflate stream format or deflate algorithm which goes beyond RFC1951. Sample streams, implementation hints whatever may be interesting.
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247answers:
2
A:
You could just use zlib rather than rolling your own?
To support pre-compressed preambles, you could:
Use the raw API (those using z_streamp as a parameter) rather than the higher level wrappers.
Initialise the compressed preamble with it's own z_streamp and place the output in a buffer.
Then for all subsequent uses of the preamble, copy the preamble output buffer to the output, and copy the preamble's z_streamp and use that copy for compressing the subsequent bytes.
Will
2009-09-13 11:18:45
No, i couldn't because i need some functions that zlib don't provide.
Thomas Maierhofer
2009-09-13 12:12:59
What functions? If you're specific, we might be able to help.
Will
2009-09-13 14:15:18
I need the possibility to insert pre compressed data in a deflate stream. I think it is hard to do. I've described the problem already in this question: http://stackoverflow.com/questions/1410533/deflate-compression-stream-where-pre-compressed-data-can-be-inserted-does-a-net
Thomas Maierhofer
2009-09-13 21:40:24
+1
A:
I worked on a streaming implementation of deflate once and found this description helpful:
http://www.zlib.net/feldspar.html
At first I tried the zlib source, but it is not an easy read.
David Crawshaw
2009-09-13 11:37:49