public int Write(Packet packet, byte[] payload)
{
byte[] header_bytes = Protocol.StructureToByteArray<Packet>(packet);
byte[] packet_bytes = new byte[header_bytes.Length + payload.Length];
Array.Copy(header_bytes,packet_bytes, header_bytes.Length);
Array.Copy(payload,0,packet_bytes,header_bytes.Length,payload.Length);
return Write(packet_bytes);
}
public int Write(Packet packet)
{
byte[] buffer = Protocol.StructureToByteArray<Packet>(packet);
return Write(buffer);
}
public int Read(out Packet packet, out byte[] packet_data)
{
int packet_header_size = Marshal.SizeOf(typeof(Packet));
int packet_size = packet_header_size+1024;
byte[] buffer = new byte[packet_size];
ErrorCode error_code;
int bytes_read;
error_code = Reader.Read(buffer,0,buffer.Length,100,out bytes_read);
if ( error_code != ErrorCode.None )
throw new Exception(UsbDevice.LastErrorString);
if ( bytes_read == 0 )
throw new Exception(UsbDevice.LastErrorString);
byte[] packet_header_bytes = new byte[packet_header_size];
Array.Copy(buffer,packet_header_bytes,packet_header_size);
packet = Protocol.ByteArrayToStructure<Packet>(packet_header_bytes);
packet_data = new byte[packet.size];
Array.Copy(buffer,packet_header_size,packet_data,0,packet.size);
return bytes_read;
}