>Instead of call delete->head() and wait for a message
It's not "instead". Before calling it i check if there's an empty queue.
2011/10/26 Mattia Rizzi <mattia.ri...@gmail.com>
> I want a gnu radio application that send packets (messages) in AIR when
> pressing ENTER with USRP. Since i don't want any underun on USRP side, i
> need a block that send zero-filled packets when there's no data to send.
> I solved it with a modify of message_source block.
> Instead of call delete->head() and wait for a message, i check if there's a
> new message to send with empty_p(). If there isn't, then zero-fill the data
> (to the USRP)
>
> The code
> //my code
> if (d_msgq->empty_p())
> {
> memset (out, 0, noutput_items*d_itemsize);
> return noutput_items;
> }
> // end of my code
>
> d_msg = d_msgq->delete_head(); //blocking call
> d_msg_offset = 0;
>
> It's okay? There are other ways to do it better? Thank you.
>
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
