Thanks so much Marcus, this makes perfect sense… Cheers, Mark
-- mark.cetilia.org | mem1.com | reduxproject.com On Sep 13, 2011, at 7:45 PM, Marcus D. Leech wrote: >> I'm producing the stream in C++ (using openFrameworks) and sending the data >> as char arrays, >> and have confirmed that this is indeed all that is being sent (e.g. "1.25")… > So, you're sending them in ASCII? As ASCII strings? > > GRC/gnuradio has no method for dealing with that. The UDP block assumes > native machine-binary format for data coming in > over UDP. Doing it in ASCII (Or Unicode, or whatever) strings will be > hugely inefficient, both in terms of bandwidth required-- > it takes many more bytes to represent a floating-point number in ASCII, than > in the native binary format, and converting from > strings back into the native binary format is also quite expensive. Since > UDP is entirely binary transparent, there's no reason > to send them as ascii strings. The only thing you have to watch out for is > if the raw floating-point format between your two > machines is different. But between x86-family machines, it's all the same. > > > > -- > Marcus Leech > Principal Investigator > Shirleys Bay Radio Astronomy Consortium > http://www.sbrac.org > > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
