private void Connect(string sourceName)
{
if (string.IsNullOrEmpty(sourceName) || _ndiSources == null || !_ndiSources.ContainsKey(sourceName))
{
return;
}
NDIlib_source_t source = _ndiSources[sourceName];
NDIlib_recv_create_t recvDescription = new NDIlib_recv_create_t()
{
source_to_connect_to = source,
color_format = NDIlib_recv_color_format_e.NDIlib_recv_color_format_e_BGRX_BGRA,
bandwidth = NDIlib_recv_bandwidth_e.NDIlib_recv_bandwidth_lowest
};
_ndiReceiveInstance = Ndi.NDIlib_recv_create(ref recvDescription);
if (_ndiReceiveInstance != IntPtr.Zero)
{
// start up a thread to receive on
_ndiReceiveThread = new Thread(ReceiveThreadProc)
{
IsBackground = true, Name = "Newtek Ndi video preview plugin receive thread"
};
_ndiReceiveThread.Start();
}
}
private void RefreshSources(object obj)
{
if (_ndiFindInstance != IntPtr.Zero)
{
int numSources = 0;
var ndi_sources = Ndi.NDIlib_find_get_current_sources(_ndiFindInstance, ref numSources);
if (numSources > 0)
{
int SourceSizeInBytes = System.Runtime.InteropServices.Marshal.SizeOf(typeof(NDIlib_source_t));
Dictionary <string, NDIlib_source_t> sources = new Dictionary <string, NDIlib_source_t>();
for (int i = 0; i < numSources; i++)
{
IntPtr p = IntPtr.Add(ndi_sources, (i * SourceSizeInBytes));
NDIlib_source_t src = (NDIlib_source_t)System.Runtime.InteropServices.Marshal.PtrToStructure(p, typeof(NDIlib_source_t));
var ndiName = Ndi.Utf8ToString(src.p_ndi_name);
sources.Add(ndiName, src);
Debug.WriteLine($"Added source name:{Ndi.Utf8ToString(src.p_ndi_name)} address :{Ndi.Utf8ToString(src.p_ip_address)}");
}
// removing non-existing sources
var notExistingSources = _videoSources.Where(s => !(sources.ContainsKey(s) || s == Common.Properties.Resources._none_)).ToArray();
foreach (var source in notExistingSources)
{
_videoSources.Remove(source);
}
//adding new sources
foreach (var source in sources)
{
if (!_videoSources.Contains(source.Key))
{
_videoSources.Add(source.Key);
}
}
_ndiSources = sources;
}
}
}
