// This will reenable routing if previous cleared.
// Should not be needed otherwise since FromSource changes will automatically update.
public void UpdateRouting()
{
// never started before?
if (_routingInstancePtr == IntPtr.Zero)
{
CreateRouting();
return;
}
// Sanity
if (_selectedSource == null || String.IsNullOrEmpty(_selectedSource.Name))
{
Clear();
return;
}
// a source_t to describe the source to connect to.
NDIlib.source_t source_t = new NDIlib.source_t()
{
p_ndi_name = UTF.StringToUtf8(_selectedSource.Name)
};
if (!NDIlib.routing_change(_routingInstancePtr, ref source_t))
{
// free the memory we allocated with StringToUtf8
Marshal.FreeHGlobal(source_t.p_ndi_name);
throw new InvalidOperationException("Failed to change routing.");
}
// free the memory we allocated with StringToUtf8
Marshal.FreeHGlobal(source_t.p_ndi_name);
}
// This will start recording.If the recorder was already recording then the message is ignored.A filename is passed in as a ‘hint’.Since the recorder might
// already be recording(or might not allow complete flexibility over its filename), the filename might or might not be used.If the filename is empty, or
// not present, a name will be chosen automatically.
public bool RecordingStart(String filenameHint = "")
{
if (!_canRecord || _recvInstancePtr == IntPtr.Zero)
{
return(false);
}
bool retVal = false;
if (String.IsNullOrEmpty(filenameHint))
{
retVal = NDIlib.recv_recording_start(_recvInstancePtr, IntPtr.Zero);
}
else
{
// convert to an unmanaged UTF8 IntPtr
IntPtr fileNamePtr = UTF.StringToUtf8(filenameHint);
retVal = NDIlib.recv_recording_start(_recvInstancePtr, IntPtr.Zero);
// don't forget to free it
Marshal.FreeHGlobal(fileNamePtr);
}
return(retVal);
}
private void CreateRouting()
{
if (_routingInstancePtr != IntPtr.Zero)
{
NDIlib.routing_destroy(_routingInstancePtr);
_routingInstancePtr = IntPtr.Zero;
}
// Sanity check
if (_selectedSource == null || String.IsNullOrEmpty(_selectedSource.Name))
{
return;
}
// .Net interop doesn't handle UTF-8 strings, so do it manually
// These must be freed later
IntPtr sourceNamePtr = UTF.StringToUtf8(_routingName);
IntPtr groupsNamePtr = IntPtr.Zero;
// make a flat list of groups if needed
if (_groups != null)
{
StringBuilder flatGroups = new StringBuilder();
foreach (String group in _groups)
{
flatGroups.Append(group);
if (group != _groups.Last())
{
flatGroups.Append(',');
}
}
groupsNamePtr = UTF.StringToUtf8(flatGroups.ToString());
}
// Create an NDI routing description
NDIlib.routing_create_t createDesc = new NDIlib.routing_create_t()
{
p_ndi_name = sourceNamePtr,
p_groups = groupsNamePtr
};
// create the NDI routing instance
_routingInstancePtr = NDIlib.routing_create(ref createDesc);
// free the strings we allocated
Marshal.FreeHGlobal(sourceNamePtr);
Marshal.FreeHGlobal(groupsNamePtr);
// did it succeed?
if (_routingInstancePtr == IntPtr.Zero)
{
throw new InvalidOperationException("Failed to create routing instance.");
}
// update in case we have enough info to start routing
UpdateRouting();
}
public Finder(bool showLocalSources = false, String[] groups = null, String[] extraIps = null)
{
if (!NDIlib.initialize())
{
if (!NDIlib.is_supported_CPU())
{
throw new InvalidOperationException("CPU incompatible with NDI.");
}
else
{
throw new InvalidOperationException("Unable to initialize NDI.");
}
}
//BindingOperations.EnableCollectionSynchronization(_sourceList, _sourceLock);
IntPtr groupsNamePtr = IntPtr.Zero;
// make a flat list of groups if needed
if (groups != null)
{
StringBuilder flatGroups = new StringBuilder();
foreach (String group in groups)
{
flatGroups.Append(group);
if (group != groups.Last())
{
flatGroups.Append(',');
}
}
groupsNamePtr = UTF.StringToUtf8(flatGroups.ToString());
}
// This is also optional.
// The list of additional IP addresses that exist that we should query for
// sources on. For instance, if you want to find the sources on a remote machine
// that is not on your local sub-net then you can put a comma seperated list of
// those IP addresses here and those sources will be available locally even though
// they are not mDNS discoverable. An example might be "12.0.0.8,13.0.12.8".
// When none is specified (IntPtr.Zero) the registry is used.
// Create a UTF-8 buffer from our string
// Must use Marshal.FreeHGlobal() after use!
// IntPtr extraIpsPtr = NDI.Common.StringToUtf8("12.0.0.8,13.0.12.8")
IntPtr extraIpsPtr = IntPtr.Zero;
// make a flat list of ip addresses as comma separated strings
if (extraIps != null)
{
StringBuilder flatIps = new StringBuilder();
foreach (String ipStr in extraIps)
{
flatIps.Append(ipStr);
if (ipStr != groups.Last())
{
flatIps.Append(',');
}
}
extraIpsPtr = UTF.StringToUtf8(flatIps.ToString());
}
// how we want our find to operate
NDIlib.find_create_t findDesc = new NDIlib.find_create_t()
{
p_groups = groupsNamePtr,
show_local_sources = showLocalSources,
p_extra_ips = extraIpsPtr
};
// create our find instance
_findInstancePtr = NDIlib.find_create_v2(ref findDesc);
// free our UTF-8 buffer if we created one
if (groupsNamePtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(groupsNamePtr);
}
if (extraIpsPtr != IntPtr.Zero)
{
Marshal.FreeHGlobal(extraIpsPtr);
}
// start up a thread to update on
_findThread = new Thread(FindThreadProc)
{
IsBackground = true, Name = "NdiFindThread"
};
_findThread.Start();
}
public Sender(String sourceName, bool clockVideo = true, bool clockAudio = false, String[] groups = null, String failoverName = null)
{
if (String.IsNullOrEmpty(sourceName))
{
throw new ArgumentException("sourceName can not be null or empty.", sourceName);
}
if (!NDIlib.initialize())
{
if (!NDIlib.is_supported_CPU())
{
throw new InvalidOperationException("CPU incompatible with NDI.");
}
else
{
throw new InvalidOperationException("Unable to initialize NDI.");
}
}
// .Net interop doesn't handle UTF-8 strings, so do it manually
// These must be freed later
IntPtr sourceNamePtr = UTF.StringToUtf8(sourceName);
IntPtr groupsNamePtr = IntPtr.Zero;
// make a flat list of groups if needed
if (groups != null)
{
StringBuilder flatGroups = new StringBuilder();
foreach (String group in groups)
{
flatGroups.Append(group);
if (group != groups.Last())
{
flatGroups.Append(',');
}
}
groupsNamePtr = UTF.StringToUtf8(flatGroups.ToString());
}
// Create an NDI source description
NDIlib.send_create_t createDesc = new NDIlib.send_create_t()
{
p_ndi_name = sourceNamePtr,
p_groups = groupsNamePtr,
clock_video = clockVideo,
clock_audio = clockAudio
};
// create the NDI send instance
_sendInstancePtr = NDIlib.send_create(ref createDesc);
// free the strings we allocated
Marshal.FreeHGlobal(sourceNamePtr);
Marshal.FreeHGlobal(groupsNamePtr);
// did it succeed?
if (_sendInstancePtr == IntPtr.Zero)
{
throw new InvalidOperationException("Failed to create send instance.");
}
if (!String.IsNullOrEmpty(failoverName))
{
// .Net interop doesn't handle UTF-8 strings, so do it manually
// These must be freed later
IntPtr failoverNamePtr = UTF.StringToUtf8(failoverName);
NDIlib.source_t failoverDesc = new NDIlib.source_t()
{
p_ndi_name = failoverNamePtr,
p_url_address = IntPtr.Zero
};
NDIlib.send_set_failover(_sendInstancePtr, ref failoverDesc);
// free the strings we allocated
Marshal.FreeHGlobal(failoverNamePtr);
}
}
/// <summary>
/// connect to an NDI source in our Dictionary by name
/// </summary>
/// <param name="source"></param>
/// <param name="colorFormat"></param>
/// <param name="bandwidth"></param>
/// <param name="allowVideoFields"></param>
public void Connect(Source source,
NDIlib.recv_color_format_e colorFormat = NDIlib.recv_color_format_e.recv_color_format_BGRX_BGRA,
NDIlib.recv_bandwidth_e bandwidth = NDIlib.recv_bandwidth_e.recv_bandwidth_highest,
bool allowVideoFields = false)
{
//if (System.ComponentModel.DesignerProperties.GetIsInDesignMode(this))
// return;
if (String.IsNullOrEmpty(ReceiverName))
{
throw new ArgumentException("sourceName can not be null or empty.", ReceiverName);
}
// just in case we're already connected
Disconnect();
// Sanity
if (source == null || String.IsNullOrEmpty(source.Name))
{
return;
}
// a source_t to describe the source to connect to.
NDIlib.source_t source_t = new NDIlib.source_t()
{
p_ndi_name = UTF.StringToUtf8(source.Name)
};
// make a description of the receiver we want
NDIlib.recv_create_v3_t recvDescription = new NDIlib.recv_create_v3_t()
{
// the source we selected
source_to_connect_to = source_t,
// we want BGRA frames for this example
color_format = colorFormat,
// we want full quality - for small previews or limited bandwidth, choose lowest
bandwidth = bandwidth,
// let NDIlib deinterlace for us if needed
allow_video_fields = allowVideoFields,
// The name of the NDI receiver to create. This is a NULL terminated UTF8 string and should be
// the name of receive channel that you have. This is in many ways symettric with the name of
// senders, so this might be "Channel 1" on your system.
p_ndi_recv_name = UTF.StringToUtf8(ReceiverName)
};
// create a new instance connected to this source
_recvInstancePtr = NDIlib.recv_create_v3(ref recvDescription);
// free the memory we allocated with StringToUtf8
Marshal.FreeHGlobal(source_t.p_ndi_name);
Marshal.FreeHGlobal(recvDescription.p_ndi_recv_name = UTF.StringToUtf8(ReceiverName));
// did it work?
System.Diagnostics.Debug.Assert(_recvInstancePtr != IntPtr.Zero, "Failed to create NDI receive instance.");
if (_recvInstancePtr != IntPtr.Zero)
{
// We are now going to mark this source as being on program output for tally purposes (but not on preview)
SetTallyIndicators(true, false);
// start up a thread to receive on
_receiveThread = new Thread(ReceiveThreadProc)
{
IsBackground = true, Name = "NdiExampleReceiveThread"
};
_receiveThread.Start();
}
}
