Additional Callbacks

[tomberek]

I was going to give this library a try and implement this in Go:
http://blog.nirbheek.in/2018/02/gstreamer-webrtc.html

But quickly ran into the limited callback functions and private callbackID on Element. I'm experimenting with adding things like SetOnNegotiationNeededCallback and SetOnICECandidateCallback, or something a little more general allowing arbitrary callbacks, but I thought I'd register this issue to see if adding something like this upstream would be possible.

[notedit]

there is a on-padadded callback.

gst/element.go

Line 270 in e023dcb

func (e *Element) SetPadAddedCallback(callback PadAddedCallback) {

you can try something similar.

[notedit]

something a little more general allowing arbitrary callbacks is a better choice i think.

[tomberek]

Yes, I was going to implement the same thing just with a different string, but I cannot access the callbackStore or private fields like Element.callbackID.

btw: i'm also taking a look at media-server-go, trying to see where i can integrate easier.

[notedit]

Thanks, if you can make a pr.

[tomberek]

Arbitrary callbacks signals and sending go functions through for gstreamer to call is proving challenging. Was trying to use this as a reference: https://eli.thegreenplace.net/2019/passing-callbacks-and-pointers-to-cgo/