static byte[] CreateMessage(PhotometryDataFrame frame, HarpMessage message)
{
var counter = frame.FrameCounter;
return(new byte[]
{
(byte)MessageType.Event, // message type
18, // message length = 3 bytes header + 14 bytes payload + 1 byte checksum
Registers.Photometry, // header address
(byte)message.Port, // header port
(byte)PayloadType.TimestampedS64, // header payload type
message.MessageBytes[5], // timestamp byte 0
message.MessageBytes[6], // timestamp byte 1
message.MessageBytes[7], // timestamp byte 2
message.MessageBytes[8], // timestamp byte 3
message.MessageBytes[9], // timestamp byte 4
message.MessageBytes[10], // timestamp byte 5
(byte)(counter >> (8 * 0)), // frame counter byte 0
(byte)(counter >> (8 * 1)), // frame counter byte 1
(byte)(counter >> (8 * 2)), // frame counter byte 2
(byte)(counter >> (8 * 3)), // frame counter byte 3
(byte)(counter >> (8 * 4)), // frame counter byte 4
(byte)(counter >> (8 * 5)), // frame counter byte 5
(byte)(counter >> (8 * 6)), // frame counter byte 6
(byte)(counter >> (8 * 7)), // frame counter byte 7
0 // checksum, will be updated by constructor
});
}
internal PhotometryHarpMessage(PhotometryDataFrame frame, HarpMessage message)
: base(true, CreateMessage(frame, message))
{
var payload = message.GetTimestampedPayloadUInt16();
frame.Flags = (FrameFlags)payload.Value;
frame.Timestamp = payload.Seconds;
PhotometryData = frame;
TriggerData = message;
}
public static IObservable <PhotometryDataFrame> FillMissing(this IObservable <PhotometryDataFrame> source, PhotometryDataFrame defaultValue)
{
return(Observable.Create <PhotometryDataFrame>(observer =>
{
var previousIndex = 0L;
var sourceObserver = Observer.Create <PhotometryDataFrame>(
value =>
{
var currentIndex = value.FrameCounter;
var missingValues = currentIndex - previousIndex - 1;
while (missingValues-- > 0)
{
observer.OnNext(defaultValue);
}
observer.OnNext(value);
previousIndex = currentIndex;
},
observer.OnError,
observer.OnCompleted);
return source.SubscribeSafe(sourceObserver);
}));
}