WebRTC via HTTP API

[alexgoldstone]

I have successfully created pipelines for cameras, displays, etc.

I am now trying to make them accessible via WebRTC and have a test pipeline that looks like:

network_stream_pipeline`, `webrtcbin bundle-policy=max-compat name=webrtcbin stun-server=stun://stun.l.google.com:19302 interpipesrc name=network_prev0 listen-to=quad_src0 is-live=true allow-renegotiation=true stream-sync=compensate-ts format=time ! queue ! nvvideoconvert ! video/x-raw(memory:NVMM), format=I420 ! videorate ! video/x-raw(memory:NVMM),framerate=30/1 ! nvv4l2h264enc maxperf-enable=1 bitrate=8000000 iframeinterval=40 preset-level=1 control-rate=1 ! h264parse ! rtph264pay config-interval=-1 name=payloader ! application/x-rtp,media=video,encoding-name=H264,payload=96 ! webrtcbin.

I am using the HTTP API. I call out to subscribe to the on-negotiation-needed signal and receive a response when the pipeline is started.

I believe the next step is to ask webrtcbin to create an offer and this is where I am struggling...

I have seen some Python code that uses GstPromise:

def on_negotiation_needed(self, element):
        promise = Gst.Promise.new_with_change_func(self.on_offer_created, element, None)
        element.emit('create-offer', None, promise)

There doesn't seem to be an equivalent mechanism for doing this via the GSTD HTTP API but I am hoping I have missed how I should do this. Any and all guidance appreciated.

Thanks.

Alex

[alexgoldstone]

I see that support to emit non parametric actions has been added here: 2ea78a4

There is no documentation for this online... I will try to see if this can be used to use WebRTC as noted above but if anyone can advise before I test it will be appreciated... If not I will report back in case others see this later.