public async Task <ICallInfo> PlaceCallAsync(CallConfiguration config)
{
Debug.Assert(_peerId == -1);
if (PeerConnection != null)
{
Debug.WriteLine("[Error] We only support connection to one peer at a time.");
return(null);
}
if (CreatePeerConnection())
{
string selectedAudioCodecName = (string)_localSettings.Values["SelectedAudioCodecName"];
string selectedVideoCodecName = (string)_localSettings.Values["SelectedVideoCodecName"];
_peerId = PeerId;
var offerOptions = new RTCOfferOptions();
offerOptions.OfferToReceiveAudio = true;
offerOptions.OfferToReceiveVideo = true;
IRTCSessionDescription offer = await PeerConnection.CreateOffer(offerOptions);
// Alter sdp to force usage of selected codecs
string modifiedSdp = offer.Sdp;
SdpUtils.SelectCodec(ref modifiedSdp, selectedAudioCodecName, "audio");
SdpUtils.SelectCodec(ref modifiedSdp, selectedVideoCodecName, "video");
RTCSessionDescriptionInit sdpInit = new RTCSessionDescriptionInit();
sdpInit.Sdp = modifiedSdp;
sdpInit.Type = offer.SdpType;
var modifiedOffer = new RTCSessionDescription(sdpInit);
await PeerConnection.SetLocalDescription(modifiedOffer);
Debug.WriteLine($"Sending offer: {modifiedOffer.Sdp}");
string jsonString = SdpToJsonString(modifiedOffer);
CallInfo callInfo = new CallInfo();
callInfo.SetCall(new Call());
callInfo.SetSdp(modifiedSdp);
callInfo.SetJsonString(jsonString);
OnSendMessageToRemotePeer.Invoke(this, jsonString);
return(callInfo);
}
return(null);
}
public Task <ICallInfo> AnswerCallAsync(CallConfiguration config, string sdpOfRemoteParty)
{
return(Task.Run(() => (ICallInfo) new CallInfo()));
}
