Hi Marcus, Thanks for your quick reply. I have attached the flowgraph to this e-mail, so hopefully you can download it now. I have posted my problem also on the jack forum, but since the error specifically occurs when I am working with gnuradio and jack (using the selector and/or hierarchical blocks), I was hoping for someone who is using gnuradio and jack in a similar manner. If someone could test my flowgraph using jack as the audio server (and then test the switching between mode 0 and 1), I would be very grateful.
Kind regards, Sjoerd On Sat, Nov 5, 2016 at 2:29 PM, Marcus Müller <marcus.muel...@ettus.com> wrote: > Hi Sjoerd, > > because you used Nabble, only half of your mails end up on the mailing > list. Short: Nabble is a very strange service that you nobody needs if > you have a mail address, just sign up directly for the mailing list > under https://lists.gnu.org/mailman/listinfo/discuss-gnuradio . > > I couldn't download your GRC file from Nabble – it just kept forwarding > me to a spam site. Please don't use nabble. > > So, anyway, your original question, copy and pasted from Nabble, was > > > I am trying to create a multimode receiver flowgraph which uses a > > selector to switch between am and fm. I use jack to be able to route > > the audio to other software for further processing. The trouble that I > > am having is that - as soon as I switch - jack gives me a "cannot > > deliver port registration request". I have tried to get around this by > > creating a python script and unregister the port with > > "jack_unregister", but that did not work out. In total despair I also > > tried to pipe the audio via udp to another flowgraph with a jack audio > > sink, but that caused other problems and it seems like an ugly hack. > > Hm, in theory, the Jack sink should handle > stopping/starting/reconfiguration gracefully. Now, I'm sadly really no > expert in Jack – maybe it's an easy fix to the Jack sink [1], but maybe > it isn't. You could have both AM and FM flowgraphs run parallely, and > multiply one with a constant 0 and the other with a constant 1 and add > both up – that way, you wouldn't have to reconfigure the flow graph. > > > Best regards, > > Marcus > > > [1] https://github.com/gnuradio/gnuradio/tree/master/gr-audio/lib/jack > > On 05.11.2016 12:50, Sjoerd wrote: > > A possible solution could be that the audio sink does not instantiate a > > normal jack port, but a 'Jack.ownPort' - which has more options and I > > suspect that I would have control over the registration of the ports. > Since > > I don't have experience with editing existing gnuradio blocks - maybe > > someone could point out to me how to approach this...? What block or > script > > should I edit to accomplish this? > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -- ------ +31 642221640 www.sjoerdleijten.nl
multi_mode_test.grc
Description: application/gnuradio-grc
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