public void OpenStream(ushort bufferSize, NetIQSampleFormat format)
{
//Validate
int maxBufferSize = NetIQUtil.GetMaxBufferSize(format);
if (bufferSize > maxBufferSize)
{
throw new Exception($"Max buffer size is {maxBufferSize}. Please lower the buffer size or make the sample format smaller.");
}
//Set
streamSampleFormat = format;
//Open the incoming buffer
streamBuffer = new byte[((int)format / 8) * 2 * bufferSize];
streamBufferHandle = GCHandle.Alloc(streamBuffer, GCHandleType.Pinned);
streamBufferPtrByte = (byte *)streamBufferHandle.AddrOfPinnedObject();
streamBufferPtrShort = (short *)streamBufferHandle.AddrOfPinnedObject();
streamBufferPtrFloat = (float *)streamBufferHandle.AddrOfPinnedObject();
//Open the outgoing buffer
sampleBuffer = UnsafeBuffer.Create(bufferSize, out sampleBufferPtr);
//Get port
int port = endpoint.Port + 1;
//Open socket
stream = new Socket(SocketType.Dgram, ProtocolType.Udp);
stream.Bind(new IPEndPoint(IPAddress.Any, port));
stream.BeginReceive(streamBuffer, 0, streamBuffer.Length, SocketFlags.None, OnStreamPacket, null);
//Send command to start streaming
NetIQCommandOpenStream cmd = new NetIQCommandOpenStream();
cmd.StreamPort = (ushort)port;
cmd.BufferSize = bufferSize;
cmd.SampleFormat = format;
cmd.SendOnSocket(sock);
}
private void OnClientCommand(NetIQServerClient ctx, byte[] data, int len)
{
//Get opcode
NetIQOpcode op = (NetIQOpcode)BitConverter.ToUInt16(data, 0);
//Switch
switch (op)
{
case NetIQOpcode.OPEN_STREAM:
//Decode command
NetIQCommandOpenStream cmd = new NetIQCommandOpenStream(data);
//Get endpoint to send to
IPAddress addr = ((IPEndPoint)ctx.sock.RemoteEndPoint).Address;
IPEndPoint ep = new IPEndPoint(addr, cmd.StreamPort);
//Make stream
NetIQServerStream stream = new NetIQServerStream(ep, cmd.BufferSize, cmd.SampleFormat);
//Apply to list
lock (streams)
{
//Remove existing stream, if any
if (ctx.stream != null)
{
streams.Remove(ctx.stream);
}
//Add
streams.Add(stream);
ctx.stream = stream;
}
break;
default:
throw new Exception("Unknown opcode!");
}
}
