private void PeerConnection_LocalSdpReadytoSend(SdpMessage message)
{
// See ProcessIncomingMessages() for the message format
string typeStr = SdpMessage.TypeToString(message.Type);
SendMessage($"sdp\n{typeStr}\n{message.Content}\n\n");
}
private void LocalSdpReadytoSend(SdpMessage message)
{
Dictionary <string, string> outMessage = new Dictionary <string, string>
{
{ "type", SdpMessage.TypeToString(message.Type) },
{ "sdp", message.Content }
};
string serializedMessage = JsonConvert.SerializeObject(outMessage);
SendMessage(serializedMessage);
}
/// <summary>
/// Standard JSON serialization for session
/// description protocol
/// </summary>
public static string ToJson(this SdpMessage SDP)
{
return("{\"type\":\"" + SdpMessage.TypeToString(SDP.Type) +
"\",\"sdp\":\"" + HttpUtility.JavaScriptStringEncode(SDP.Content) +
"\"}");
}
static private async Task StartStend()
{
var autoEvent = new AutoResetEvent(false);
bool video_translator = true;
bool file_created = false;
FileStream file = null;
Quartus quartus = Quartus.GetInstance();
Microcontroller arduino = Microcontroller.Create();
if (video_translator)
{
// Asynchronously retrieve a list of available video capture devices (webcams).
var deviceList = await DeviceVideoTrackSource.GetCaptureDevicesAsync();
// For example, print them to the standard output
foreach (var device in deviceList)
{
Console.WriteLine($"Found webcam {device.name} (id: {device.id})");
}
}
// Create a new peer connection automatically disposed at the end of the program
var pc = new PeerConnection();
// Initialize the connection with a STUN server to allow remote access
var config = SystemConfiguration.PeerConnectionSettings;
await pc.InitializeAsync(config);
Console.WriteLine("Peer connection initialized.");
//var chen = await pc.AddDataChannelAsync("sendDataChannel", true, true, cancellationToken: default);
Console.WriteLine("Opening local webcam...");
// pc - PeerConnection object
Transceiver videoTransceiver = null;
VideoTrackSource videoTrackSource = null;
LocalVideoTrack localVideoTrack = null;
LocalVideoDeviceInitConfig c = new LocalVideoDeviceInitConfig();
await VideoDeviceSelection();
videoTrackSource = await Camera.CreateAsync(SystemConfiguration.VideoDeviceSettings);
WebSocketSharp.WebSocket signaling = new WebSocketSharp.WebSocket(CreateSignalingServerUrl(), "id_token", "alpine");
pc.LocalSdpReadytoSend += (SdpMessage message) =>
{
//Console.WriteLine(SdpMessage.TypeToString(message.Type));
Console.WriteLine(message.Content);
//Console.WriteLine(HttpUtility.JavaScriptStringEncode(message.Content));
Console.WriteLine("Sdp offer to send: {\"data\":{\"description\":{\"type\":\"" + SdpMessage.TypeToString(message.Type) + "\",\"sdp\":\"" + HttpUtility.JavaScriptStringEncode(message.Content) + "\"}}}");
signaling.Send(message.ToABJson());
};
pc.RenegotiationNeeded += () =>
{
Console.WriteLine("Regotiation needed");
bool OfferCreated = pc.CreateOffer();
Console.WriteLine("OfferCreated? {0}", OfferCreated);
};
pc.DataChannelAdded += (DataChannel channel) =>
{
Console.WriteLine("Added data channel ID: {0}, Label: {1}; Reliable: {2}, Ordered: {3}", channel.ID, channel.Label, channel.Reliable, channel.Ordered);
if (channel.Label == "sendDataChannel")
{
channel.MessageReceived += (byte[] mess) => {
try
{
CTP_packet command = JsonSerializer.Deserialize <CTP_packet>(mess);
Console.WriteLine(arduino.SendCTP_Command(command));
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
};
}
else
{
if (file_created == false)
{
file = new FileStream(channel.Label, FileMode.Append);
file_created = true;
}
channel.MessageReceived += async(byte[] mess) =>
{
// Console.WriteLine(System.Text.Encoding.Default.GetString(mess));
if (mess.Length == 3 && System.Text.Encoding.Default.GetString(mess) == "EOF")
{
string file_name = file.Name;
file.Close();
string t = await quartus.RunQuartusCommandAsync($"quartus_pgm -m jtag –o \"p;{file_name}@1\"");
File.Delete(file_name);
file_created = false;
}
else
{
WriteFileSegment(mess, file);
}
};
}
channel.StateChanged += () =>
{
Console.WriteLine("State change: {0}", channel.State);
};
};
pc.IceCandidateReadytoSend += (IceCandidate candidate) =>
{
//Console.WriteLine("Content: {0}, SdpMid: {1}, SdpMlineIndex: {2}", candidate.Content, candidate.SdpMid, candidate.SdpMlineIndex);
try
{
Console.WriteLine("Candidate to send: Content: {0}, SdpMid: {1}, SdpMlineIndex: {2}", candidate.Content, candidate.SdpMid, candidate.SdpMlineIndex);
signaling.Send(candidate.ToABJson());
}
catch (Exception e)
{
Console.WriteLine("Error to send local ice candidate");
}
};
//videoTrackSource.I420AVideoFrameReady += (frame) =>
//{
// Console.WriteLine("Argb32 frame ready. {0} : {1}", frame.width, frame.height);
// Console.WriteLine("DataA: {0}, DataU: {1}, DataV: {2}, DataY: {3}", Marshal.SizeOf(frame.dataA),
// Marshal.SizeOf(frame.dataU),
// Marshal.SizeOf(frame.dataV),
// Marshal.SizeOf(frame.dataY));
//};
signaling.OnMessage += async(sender, message) =>
{
(string header, string correct_message) = message.Data.DivideHeaderAndOriginalJSON();
Console.WriteLine("Correct message: {0}", correct_message);
Console.WriteLine("Header: {0}", header);
if (header == "{\"data\":{\"getRemoteMedia\":" && correct_message == "true")
{
Console.WriteLine("Create local video track...");
var trackSettings = new LocalVideoTrackInitConfig {
trackName = "webcam_track"
};
localVideoTrack = LocalVideoTrack.CreateFromSource(videoTrackSource, new LocalVideoTrackInitConfig {
trackName = "webcam_track"
});
Console.WriteLine("Create video transceiver and add webcam track...");
TransceiverInitSettings option = new TransceiverInitSettings();
option.Name = "webcam_track";
option.StreamIDs = new List <string> {
"webcam_name"
};
videoTransceiver = pc.AddTransceiver(MediaKind.Video, option);
videoTransceiver.DesiredDirection = Transceiver.Direction.SendOnly;
videoTransceiver.LocalVideoTrack = localVideoTrack;
bool OfferCreated = pc.CreateOffer();
Console.WriteLine("OfferCreated? {0}", OfferCreated);
}
//Console.WriteLine(message.Data);
if (header.IndexOf("candidate") != -1 && correct_message != "null")
{
try
{
var candidate = JsonSerializer.Deserialize <ICEJavaScriptNotation>(correct_message);
Console.WriteLine("Content of ice: {0}, SdpMid: {1}, SdpMLineIndex: {2}", candidate.candidate, candidate.sdpMid, candidate.sdpMLineIndex);
pc.AddIceCandidate(candidate.ToMRNetCoreNotation());
Console.WriteLine("Deserialized by ice_candidate");
//return;
}
catch (Exception)
{
Console.WriteLine("Could not deserialize as ice candidate");
}
}
if (header.IndexOf("description") != -1)
{
try
{
SdpMessage received_description = JsonSerializer.Deserialize <SDPJavaScriptNotation>(correct_message).ToMRNetCoreNotation();
await pc.SetRemoteDescriptionAsync(received_description);
if (received_description.Type == SdpMessageType.Offer)
{
bool res = pc.CreateAnswer();
Console.WriteLine("Answer created? {0}", res);
}
Console.WriteLine("Deserialized by sdp_message");
}
catch (Exception)
{
Console.WriteLine("Could not deserialize as sdp message");
}
}
};
pc.Connected += () =>
{
Console.WriteLine("Connected");
};
pc.IceStateChanged += (IceConnectionState newState) =>
{
if (newState == IceConnectionState.Disconnected)
{
Console.WriteLine("Disconected");
}
};
signaling.Connect();
if (!video_translator)
{
signaling.Send("{\"data\":{\"getRemoteMedia\":true}}");
}
//Console.WriteLine("Press a key to terminate the application...");
Console.ReadKey(true);
Console.WriteLine("Program termined.");
file?.Close();
pc?.Close();
signaling?.Close();
//arduino?.Close();
//(var a, var b) = ConvertString("{\"data\":{\"candidate\":null}}");
//Console.WriteLine("{0}, {1}", a, b);
}