public void Open(IReadOnlyList <ushort> ports)
{
if (contexts.Count > 0)
{
throw new InvalidOperationException("Bug: please close the transmitter before opening it again");
}
denominators = new List <uint>();
for (int d = 0; d < ports.Count; d++)
{
unsafe
{
var res = SnvBackend.ScrGetResolution(d);
if (res == 0)
{
throw new Exception("Cannot determine display resolution");
}
S2TransmitterContext *tc = (S2TransmitterContext *)Marshal.AllocHGlobal(sizeof(S2TransmitterContext));
if (SnvBackend.S2TransmitterInit(tc, serverAddr.ToString(), ports[d], 0) != 0)
{
throw new InvalidOperationException("Failed to initialize video stream transmission");
}
contexts.Add(d, (IntPtr)tc);
}
denominators.Add(InitialDenominator);
}
ctxKeys = contexts.Keys.ToArray();
}
public static unsafe extern int S2TransmitterClose(S2TransmitterContext *tctx);
public static unsafe extern int S2Send(S2TransmitterContext *tctx, S2Frame *frm);
public static unsafe extern int S2TransmitterInit(S2TransmitterContext *tctx,
[MarshalAs(UnmanagedType.LPStr)] string addr, ushort port, int flags);