/** ..and each time we want to read, data, we must explicitly fetch the struct. */
internal void GetControlData()
{
controlStruct.bufferstates = -1;
controlStruct = (ControlChannelStruct)Marshal.PtrToStructure(controlChannel.data, typeof(ControlChannelStruct));
}
public FrameTransport()
{
sharedInfoSize = (uint)Marshal.SizeOf((Type)typeof(ControlChannelStruct));
haveFrame = false;
bitmapData = null;
bitmapDataSize = 0;
frameChannel1 = null;
frameChannel2 = null;
controlStruct = new ControlChannelStruct();
controlStruct.bufferstates = 1;
controlStruct.buffer1.bufid = -1;
controlStruct.buffer2.bufid = -1;
controlStruct.buffer1.clientpointer = 1;
controlStruct.buffer2.clientpointer = 2;
controlStruct.fourcccount = 0;
controlStruct.buftype = BufferType.WinBuffers;
// Mapping the control channel
controlChannel = new SharedMemoryChannel();
bool success = controlChannel.CreateMapping(sharedInfoSize);
if (!success) throw new Exception("Unable to create memory mapping for video frame transport");
// Opening the control channel for read-write
controlChannel.OpenMapping(controlChannel.key);
int error = Win32.GetLastError();
if (error != 0) throw new Exception("Unable to map memory for video frame transport");
}
