[Live-devel] Filter chain question - chain seems to stall

[mamille1 at rockwellcollins.com]

All 

We've inserted a custom filter into our transport stream recording chain. 
Almost all the time it works (and has been working pretty well for many 
months), but lately we've seen this problem:

data is being streamed towards our unit, and RTP packets are being 
buffered;
when our problem occurs, one of the 'downstream' filters seems to stop 
requesting new data
RTP packets 'pile up' in memory and no data is written to our recording 
file. 

We wanted to check our understanding of the normal source-to-sink chain 
processing. The network side of our chain depends on being called from its 
sink-ward filter to get started, but afterwards continues on its own to 
get RTP packets from the network. When called on it will provide data to 
its sink, but the part that pulls in RTP packets from the network won't 
hang or stall if it's getNextFrame() is never called by its sink. 

Thanks!

-=- Mike Miller
SW Engineer
Rockwell Collins, Inc.
Cedar Rapids, IA 
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