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();
}
}
void SendMetadataFrame(string data)
{
if (!string.IsNullOrEmpty(data))
{
Interop.MetadataFrame metadataFrame = new Interop.MetadataFrame();
int length;
metadataFrame.Data = Util.StringToUtf8(data, out length);
metadataFrame.Length = length;
if (_recv != null && !_recv.IsClosed)
{
_recv.SendMetadata(metadataFrame);
}
Marshal.FreeHGlobal(metadataFrame.Data);
}
}
public FrameType Capture
(out VideoFrame video, out AudioFrame audio, out MetadataFrame metadata, uint timeout)
=> _CaptureV3(this, out video, out audio, out metadata, timeout);
public void FreeMetadata(ref MetadataFrame data) => _FreeMetadata(this, ref data);
public FrameType Capture(out MetadataFrame data, uint timeout) => _Capture(this, out data, timeout);