Hi Nihar,
Please find comments inline.
For more discussion on Sigcomp post your queries to [EMAIL PROTECTED]
Regards
Saurabh
Saurabh Gupta - HSS Bangalore Campus Ext 7082
"Nihar Ranajan
Jena"
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Queries...
07/05/04 11:38 AM
Hi All,
I am now implementing the sigcomp.I have some queries as below. Can Any
one answer to these Queries so that it will be great helpful.
1. Whether the ByteCode for Deflate given in the Appendix: A.4. of draft-
price-rohc-sigcomp-user-guide-02.txt can be Applicable for Decompression
of All Compressed data(using Deflate). Or we have to implement the
assembler for generating the ByteCode for Decompression
Saurabh >> The corresponding Bytecode can be used for all compressed data
which are compressed using Deflate. But Read point 2 of the 4.4 of the
draft
<price-rohc-sigcomp-user-guide-02.txt>. With one precondition that only
Static
Huffman coding is used.
2. If we will use the ByteCode of Appendix: A.4.of draft-price-rohc-
sigcomp-user-guide-02.txt. then As an implementer point of view where(in
Which location of UDVM memory) should we copy the Byte code and where
should we keep the Compressed data so that the Byte code can able to
Decompress the compressed data. From Which Location should we get the
Decompressed data after the whole ByteCode Execution.(In the draft-price-
rohc-sigcomp-user-guide-02.txt it is not described clearly.
Saurabh >> Location where bytecode should be copied is very clear from the
draft. That will be multiply of 64 and it will greater than 308.
There is 'OUTPUT' and three kinds of Input Instruction which can be
effectively
used to control Input and Output.
3. As shown in the mnemonics in section 4.4 (i.e. of draft-price-rohc-
sigcomp-user-guide-02.txt) for the respective ByteCode shown to set some
values at some Particular location. Whether those values will be copied
to that Particular Location is taken care by the ByteCode itself or we
have to Copy those values to the Location during Implementation.
Saurabh >> These are taken care in the Bytecode.Those are equivalent for
"Label".
4. By setting the dictionary (i.e. for SIP/SDP given in the RFCâ3485)
to the zLib the Sip messages can be compressed by Deflate. Whether the
given ByteCode for DEFLATE in the draft-price-rohc-sigcomp-user-guide-
02.txt will be able to Decompress that Compressed Message(Compressed by
the ZLib).
Saurabh >> Not Sure.
Thanks in advance.
--Nihar
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