RE: Need Help with CCPP

By looking at DELI, Cocoon (and JSR 188, which is the API you are looking for) you are on the right track regarding implementation. However, how you use information obtained via CC/PP is up to you. If you have multiple images encoded at different res/rate, then you will need to create your own matching algorithm to select the appropriate version. The purpose of CC/PP is only to make such a selection possible, not to dictate how the selection is performed.
 
One strategy that might be worth considering is lazy encoding with caching. By this I mean that you encode a resource based on the CC/PP data at the time of the request, and then cache the result in case you see the same CC/PP data later. Of course, this might not be suitable for your video solution, but it is potentially useful for other media types.
 
Regards,
---Rotan.

-----Original Message-----
From: rakesh kothari [mailto:rkothari_iit@rediffmail.com]
Sent: 24 October 2004 00:43
To: www-mobile@w3.org
Subject: Need Help with CCPP




Hello,

I am new to this group, so pardon me if I ask any basic question.

Does anyone know how to design a CC/PP enabled client or web-browser(or is there any 
such open source client or related APIs available ?). 

I intend to design a system in which a webserver will send the handle the request from the 
clients depending on their profiles. For example if a request for http video stream comes 
from a PDA client then its resolution will be small (176x144). In a similar vien if the request 
for same stream comes a desktop client then the resolution will be high.

As far as I know, I think on server side I could use DELI for processing HTTP request 
containing CCPP profile information. Also, Apache cocoon project gives some insight on 
applying transformation to the content.

What I am still usnsure is if the server already has video files encoded at different resolution 
and bitrates then how to send the appropriate file for the same http request depending on 
different device profiles.

I would be very thankful if someone could provide some insight to me regarding these 
questions.

Regards,
Rakesh 



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