[Discuss-gnuradio] Long PDUs

[Sean Nowlan]

I want to see whether "very long" PDUs would break the new tagged stream 
model implementation in recent GR versions. Let's say I want to use 
tagged streams with length tags to transmit streams that would require 
many more samples than a single call to work() could handle. From diving 
into the source code, streamed tag blocks look like they explicitly ask 
the scheduler for the exact number of samples needed to process an 
entire PDU. So it looks like I'll get into trouble here. I can see how 
this methodology is smart for many packet-based protocols, but I 
basically want to control gated streaming with precise timing control 
(using USRP). Many times I'll need to stream for seconds or minutes, 
which implies multiple calls to work() to generate samples.

--sean
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