internal static extern IntPtr PeerConnectionObserver_new(WebrtcUnityStateCallback SignalingChange,
WebrtcUnityResultCallback DataChannel,
WebrtcUnityCallback RenegotiationNeeded,
WebrtcUnityStateCallback IceConnectionChange,
WebrtcUnityStateCallback StandardizedIceConnectionChange,
WebrtcUnityStateCallback ConnectionChange,
WebrtcUnityStateCallback IceGatheringChange,
WebrtcUnityResultCallback IceCandidate,
WebrtcUnityResultCallback IceCandidatesRemoved,
WebrtcUnityStateCallback IceConnectionReceivingChange,
WebrtcUnityResultCallback AddTrack,
WebrtcUnityResultCallback RemoveTrack,
WebrtcUnityStateCallback InterestingUsage);
/// <summary>
/// 持有一个数据接收器
/// </summary>
/// <param name="handler">数据接收器指针</param>
internal protected RtpReceiver(IntPtr handler, IDispatcher dispatcher) : base(handler)
{
IntPtr track = default;
dispatcher.Invoke(() =>
{
WebrtcObject_AddRef(handler);
track = RtpReceiver_GetMediaStreamTrack(handler);
});
Dispatcher = dispatcher;
if (track == IntPtr.Zero)
{
throw new Exception("无法获取媒体轨道");
}
IntPtr proxyPtr = default;
dispatcher.Invoke(() => proxyPtr = MediaStreamTrack.MediaStreamTrack_GetKind(track));
if (proxyPtr == IntPtr.Zero)
{
throw new Exception("无法获取媒体类型");
}
var buffer = new PointerArray(proxyPtr);
unsafe
{
byte **pointer = (byte **)buffer.GetBuffer();
var kind = new string((sbyte *)*pointer);
if (kind == "video")
{
Track = new VideoTrack(track, dispatcher);
}
else if (kind == "audio")
{
Track = new AudioTrack(track, dispatcher);
}
else
{
var unkown = new UnkownMediaStreamTrack(track, dispatcher);
unkown.SetKind(kind);
Track = unkown;
}
}
NativeFirstPacketReceived = state => FirstPacketReceived?.Invoke((MediaType)state);
dispatcher.Invoke(() => RtpReceiver_SetFirstPacketReceivedObserve(handler, NativeFirstPacketReceived));
}
/// <summary> /// C++ API：设置首次接到数据包的回调 /// </summary> /// <param name="ptr">接收器指针</param> /// <param name="FirstPacketReceived">首次接到数据包的回调</param> [DllImport(UnityPluginDll)] internal static extern void RtpReceiver_SetFirstPacketReceivedObserve(IntPtr ptr, WebrtcUnityStateCallback FirstPacketReceived);
