Feature #332
Handling ecm cache to speed up zapping
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Description
Hi
I'm wondering if there's some way to speed up encrypted channels zapping. FTA chans zapping is really fast, but encrypted channels takes around 3 sec to tune in.
Perhaps using the same scheme as vdr-sc does with ecm caching is the way to go.
After you tune to a channel for the first time, vdr-sc pulls this information for a particular SID from the datastream , and stores the ecm information for that channel in this file. For quicker channel changing information, vdr-sc then recalls this information from the ecm.cache whenever you tune back to that particular channel at a later time---which makes the channel changes much quicker in subsequent tune-ins.
code is in sc/cam.c on the VDR-SC plugin
regards.
History
Updated by
Updated by Adam Sutton almost 12 years ago
Updated by - Assignee changed from Andreas Smas to Mariusz Białończyk
Mariusz,
Can you possibly take a look at this, just give thoughts on whether its a) useful b) something that could be done etc...
Adam
Updated by Mariusz Białończyk almost 12 years ago
Updated by It's similar thing which i described in https://www.lonelycoder.com/redmine/issues/1278#note-6
Of course it could be done but it needs to expand our structures to hold last CAID and handle situations when CAIDs are updated.
Overall: i think that benefit from this would be insignificant.
Updated by Vojtech Plavecky almost 12 years ago
Updated by personally i do not see benefit of that, while oscam is holding cache, ecm request would be done in ms if oscam is running on same machine.
Updated by Adam Sutton almost 12 years ago
- Status changed from New to Rejected
Closing based on Mariusz evaluation. If this really is wanted I'm sure someone else will ask.
Adam