On Wednesday 27 February 2013 18:51:34 Patrick Shirkey wrote: > On Thu, February 28, 2013 8:14 am, drew Roberts wrote: > > Ignorant here. Trying to scrounge around and make something work for a > > demo > > purpose. > > > > In python I am trying to build this pipeline: > > > > pipeline_txt = ( > > 'jackaudiosrc ! ' > > 'level name=level interval=1000000000 !' > > 'jackaudiosink') > > > > pipeline = gst.parse_launch(pipeline_txt) > > > > I have been trying that a number of ways. > > > > So, I basically watch the bus for level info. > > > > In a subroutine, I can print the peak info to the terminal. > > > > I can't seem to figure out how to pass this info back to the rest of the > > program so that I can hook it up to a graphical meter. > > Add a call to the callback for the meter to set the meter value from the > subroutine? > > > Cna anyone point me to some simple code doing something like this? Give > > me some clues that might help someone who seems to be being very dense > > for days > > now? > > Sounds like you just need to connect the meter to the subroutine but it's > a bit had to say without a bit more code to demonstrate how you are > setting up the meter. > > A few questions... > > Is the meter a class of it's own or just a widget in a draw routine? > > Do you have a "set_meter_value" type of function or are you just calling > directly to the meter widget's value? > > What UI toolkit is the meter using?
Right now, I have not even tried to make a meter, I just want to get the peak value out of the subroutine and print it from outside. I can print it from the inside but can't even figure out how to get it out. One sample I started working with (there are others but this is one) can be found here: http://stackoverflow.com/questions/9344888/getting-max-amplitude-for-an-audio-file-per-second In the def show_peak(bus, message): there is: peaks.append(message.structure['peak'][0]) but this is more of a "batch" type setup rather than an interactive one. So let's say I do something like this instead: #peaks.append(message.structure['peak'][0]) zpeak = message.structure['peak'][0] #print "message.structure: " print zpeak return zpeak along with making a jack source and sink instead of a file source and fake sink. I can get the peaks printed in there via the print zpeak. But I am going around in circles (actually, circles is too clean a shape) in my head trying to figure out how to get that info out as it comes in. Once I ge that, then I have to figure out how to hook it up to a meter widget. One possibility I have looked at basing this on is this: http://zetcode.com/gui/pygtk/customwidget/ > > > > -- > Patrick Shirkey > Boost Hardware Ltd all the best, drew _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
