/// <summary>
/// Method accepts address in form ndi://ip_address:port and ndi://ip_address:ndi_name
/// </summary>
/// <param name="sourceUrl"></param>
public void SetSource(string sourceUrl)
{
if (string.IsNullOrWhiteSpace(sourceUrl))
{
return;
}
Uri sourceUri = null;
if ((Uri.TryCreate(sourceUrl, UriKind.Absolute, out sourceUri) && sourceUri.Scheme == "ndi") ||
string.Equals(sourceUrl.Substring(0, sourceUrl.IndexOf(':')), "ndi", StringComparison.InvariantCultureIgnoreCase))
{
Application.Current.Dispatcher.BeginInvoke((Action) delegate
{
if (_ndiSources == null)
{
return;
}
string source = null;
if (sourceUri != null)
{
source = _ndiSources.FirstOrDefault(s => Ndi.Utf8ToString(s.Value.p_ip_address) == sourceUri.Host).Key;
}
else
{
string address = sourceUrl.Substring(sourceUrl.IndexOf("//") + 2);
if (!string.IsNullOrWhiteSpace(address))
{
string host = address.Substring(0, address.IndexOf(':'));
string name = address.Substring(address.IndexOf(':') + 1);
var ndi = _ndiSources.FirstOrDefault(s =>
{
string ndiFullAddress = Ndi.Utf8ToString(s.Value.p_ip_address);
string ndiFullName = Ndi.Utf8ToString(s.Value.p_ndi_name);
int openingBraceIndex = ndiFullName.IndexOf('(', 1);
int closingBraceIndex = ndiFullName.IndexOf(')', openingBraceIndex);
if (openingBraceIndex > 0 &&
closingBraceIndex > openingBraceIndex &&
ndiFullAddress.Substring(0, ndiFullAddress.IndexOf(':')).Equals(host, StringComparison.InvariantCultureIgnoreCase) &&
ndiFullName.Substring(openingBraceIndex + 1, closingBraceIndex - openingBraceIndex - 1).Equals(name, StringComparison.InvariantCultureIgnoreCase))
{
return(true);
}
return(false);
}).Key;
}
}
if (!string.IsNullOrWhiteSpace(source))
{
VideoSource = source;
}
});
}
}
private static void RefreshSources()
{
var numSources = 0;
var ndiSources = Ndi.NDIlib_find_get_current_sources(NdiFindInstance, ref numSources);
if (numSources <= 0)
{
return;
}
var sourceSizeInBytes = Marshal.SizeOf(typeof(NDIlib_source_t));
var sources = new Dictionary <string, NDIlib_source_t>();
for (var i = 0; i < numSources; i++)
{
var p = IntPtr.Add(ndiSources, (i * sourceSizeInBytes));
var src = (NDIlib_source_t)Marshal.PtrToStructure(p, typeof(NDIlib_source_t));
var ndiName = Ndi.Utf8ToString(src.p_ndi_name);
sources.Add(ndiName, src);
Debug.WriteLine($"Added source name:{Ndi.Utf8ToString(src.p_ndi_name)} address :{Ndi.Utf8ToString(src.p_ip_address)}");
}
_ndiSources = sources;
SourceRefreshed?.Invoke(null, EventArgs.Empty);
}
private void RefreshSources(object obj)
{
if (_ndiFindInstance != IntPtr.Zero)
{
int numSources = 0;
var ndi_sources = Ndi.NDIlib_find_get_current_sources(_ndiFindInstance, ref numSources);
if (numSources > 0)
{
int SourceSizeInBytes = System.Runtime.InteropServices.Marshal.SizeOf(typeof(NDIlib_source_t));
Dictionary <string, NDIlib_source_t> sources = new Dictionary <string, NDIlib_source_t>();
for (int i = 0; i < numSources; i++)
{
IntPtr p = IntPtr.Add(ndi_sources, (i * SourceSizeInBytes));
NDIlib_source_t src = (NDIlib_source_t)System.Runtime.InteropServices.Marshal.PtrToStructure(p, typeof(NDIlib_source_t));
var ndiName = Ndi.Utf8ToString(src.p_ndi_name);
sources.Add(ndiName, src);
Debug.WriteLine($"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;
}
}
}
