Unable to append GValueArray to GValueArray.

[usdin]

Hi, I am new to Gstreamer and fairly good with Java. While I was trying to create array of array as described here
https://gstreamer.freedesktop.org/documentation/audioconvert/index.html?gi-language=c#example-matrix-generation-code.
I couldn't find any api to do so. Please suggest.

[neilcsmith-net]

You could probably do this with lowlevel classes, although if you use them directly they're not guaranteed to be stable across releases. See https://github.com/gstreamer-java/gst1-java-core/blob/master/src/org/freedesktop/gstreamer/lowlevel/GValueAPI.java#L242

We ideally need to have a look at refactoring GObject::set to support passing in arrays, as well as supporting GStreamer's string formats, at https://github.com/gstreamer-java/gst1-java-core/blob/master/src/org/freedesktop/gstreamer/glib/GObject.java#L308

If you only need to create an element with that property and not change the property later, then you should also be able to use Gst::parseLaunch and the same format given under launch lines in the link you shared.

eg. (not tested) this should work.

Element convert = Gst.parseLaunch("audioconvert mix-matrix=\"<<(float)1.0, (float)0.0, (float)0.0, (float)0.0>, <(float)0.0, (float)1.0, (float)0.0, (float)0.0>>\"");

[neilcsmith-net]

Added setAsString support to GstObject, which at the moment is probably as much support as we can give this use case, so closing issue. Will be in 1.2 release soon.