[LAD] LV2 Oscilloscope

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To: Linux Audio Developers <linux-audio-dev@...>, David Robillard <d@...>, Harry van Haaren <harryhaaren@...>, <mail@...>
Date: Thursday, October 10, 2013 - 5:29 pm

Hi all,

I'm still trying to improve the avw.lv2 plugin set (reminder, the port
of AMS internal modules), and one of the new plugin I would like to
have is a visual oscilloscope - it's very useful when working with
modular synth to see what the Osc/LFO are at.

At the moment i'm using the DSSI ll-scope but although it works very
well for low frequencies, the refresh rate is not that great for very
high frequencies - half the graph is not displayed and if I setting it
in frozen mode doesn't work that great for Osc/LFO that changes shape
with time.

My plan was to use the ll-scope gtk widget, add it to a LV2 plugin and
start from there.

The problem I'm at the moment facing is this:
- ll-scope widget requires the sample rate as a constructor but I
can't find an easy way for an LV2 plugin to pass the sample rate.
- what is the cleanest way to access input port data from the GUI? GUI
and plugin are very well separated in LV2, I can't figure out what's
the proper way to do this.

Thanks in advance for everyone's help :)

Aurélien
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Messages in current thread:
[LAD] LV2 Oscilloscope, Aurélien Leblond, (Thu Oct 10, 5:29 pm)
Re: [LAD] LV2 Oscilloscope, Lars Luthman, (Thu Oct 10, 6:38 pm)
Re: [LAD] LV2 Oscilloscope, Robin Gareus, (Thu Oct 10, 7:28 pm)
Re: [LAD] LV2 Oscilloscope, Lars Luthman, (Thu Oct 10, 6:42 pm)
Re: [LAD] LV2 Oscilloscope, Filipe Coelho, (Thu Oct 10, 7:05 pm)
Re: [LAD] LV2 Oscilloscope, Harry van Haaren, (Thu Oct 10, 6:12 pm)
Re: [LAD] LV2 Oscilloscope, Paul Davis, (Thu Oct 10, 7:07 pm)
Re: [LAD] LV2 Oscilloscope, Harry van Haaren, (Fri Oct 11, 12:28 am)
[LAD] lv2 external UI -- was Re: LV2 Oscilloscope, Robin Gareus, (Fri Oct 11, 2:08 pm)
Re: [LAD] lv2 external UI -- was Re: LV2 Oscilloscope, Filipe Coelho, (Fri Oct 11, 2:45 pm)
Re: [LAD] lv2 external UI -- was Re: LV2 Oscilloscope, Robin Gareus, (Fri Oct 11, 2:42 pm)