[USRP-users] VRT Passthrough

Josh Blum josh at ettus.com
Fri Apr 12 13:54:47 EDT 2013

On 04/12/2013 10:24 AM, Joseph Payton wrote:
> Is there any straightforward way to receive and re-transmit the VRT packets
> directly using UHD, configuring a streamer or otherwise? (I am using the
> USRP N200)

You might find this helpful; You can tell the device to stream to an
arbitrary socket:

This means that you capture program is a simple loop with a socket recv
and write to file.


> I know that the conversion is done under the hood, but I have utility in
> getting the VRT packets onto a disk. Also, the overhead of raw packet
> capture is not attractive to me due to CPU constraints.
> Right now the options that I see so far are:
> 1. To keep track of the metadata on my receives  and reconstruct the VRT
> packet for my own use.
> or
> 2. To override / extend the io implementation to provide a "null" unpacker
> to be used in recv_pirate_loop, and just make sure that I am aware on
> the receive side that I am not receiving the usual output.
> Many thanks in advance and thanks for help given in the past.
> _______________________________________________
> USRP-users mailing list
> USRP-users at lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

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