private void LateUpdate()
{
// Check if the receiver has returned any metadataFrames
if (_send != null && !_send.IsClosed)
{
Interop.MetadataFrame recvMetadataFrame = new Interop.MetadataFrame();
while (_send.Capture(out recvMetadataFrame, 0) == Interop.FrameType.Metadata)
{
// Dispatch UnityEvent
onMetaDataReceived?.Invoke(Util.Utf8ToString(recvMetadataFrame.Data));
// Free the metadataFrame
_send.FreeMetadata(ref recvMetadataFrame);
}
}
if (!string.IsNullOrEmpty(sendMetadataFrameData) && _enableMetadataFrames)
{
// Send some metadata
Interop.MetadataFrame metadataFrame = new Interop.MetadataFrame();
int length;
metadataFrame.Data = Util.StringToUtf8(sendMetadataFrameData, out length);
metadataFrame.Length = length;
if (_send != null && !_send.IsClosed)
{
_send.SendMetadata(metadataFrame);
}
Marshal.FreeHGlobal(metadataFrame.Data);
sendMetadataFrameData = null;
// Dispatch metaData sent event
_onMetadataSent?.Invoke();
}
}
