コード例 #1
0
        private int readFromOffset(int offset, byte[] rawData)
        {
            totalPacketCount++;
            if (totalPacketCount == estimateRateStartPacket)
            {
                ticksAtRateEstimateStart = DateTime.Now.Ticks;
            }
            else if (totalPacketCount == estimateRateEndPacket && ticksAtRateEstimateStart > 0)
            {
                rateEstimate = (float)(TimeSpan.TicksPerSecond * (estimateRateEndPacket - estimateRateStartPacket)) / (float)(DateTime.Now.Ticks - ticksAtRateEstimateStart);
            }
            // the first 2 bytes are the version - discard it for now
            int frameTypeAndSequence = rawData[offset + 2];
            int frameType            = frameTypeAndSequence & 3;
            int sequence             = frameTypeAndSequence >> 2;
            int frameLength          = 0;

            if (frameType == 0)
            {
                telemPacketCount++;
                frameLength = sTelemetryData_PacketSize;
                Boolean sequenceCheckOK = isNextInSequence(sequence);
                if (strictPacketOrdering && !sequenceCheckOK)
                {
                    discardedTelemCount++;
                }
                else
                {
                    handle = GCHandle.Alloc(rawData.Skip(offset).Take(frameLength).ToArray(), GCHandleType.Pinned);
                    sTelemetryData telem = (sTelemetryData)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(sTelemetryData));
                    if (sequenceCheckOK || !telemIsOutOfSequence(telem))
                    {
                        //buttonsState = ConvertByteToBoolArray(telem.sDPad);
                        lastSequenceNumberForTelemPacket = sequence;
                        workingGameState = StructHelper.MergeWithExistingState(workingGameState, telem);
                        // newSpotterData = workingGameState.hasNewPositionData;
                        handle.Free();
                    }
                }
            }
            else if (frameType == 1)
            {
                frameLength = sParticipantInfoStrings_PacketSize;
                handle      = GCHandle.Alloc(rawData.Skip(offset).Take(frameLength).ToArray(), GCHandleType.Pinned);
                sParticipantInfoStrings strings = (sParticipantInfoStrings)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(sParticipantInfoStrings));
                workingGameState = StructHelper.MergeWithExistingState(workingGameState, strings);
                handle.Free();
            }
            else if (frameType == 2)
            {
                frameLength = sParticipantInfoStringsAdditional_PacketSize;
                handle      = GCHandle.Alloc(rawData.Skip(offset).Take(frameLength).ToArray(), GCHandleType.Pinned);
                sParticipantInfoStringsAdditional additional = (sParticipantInfoStringsAdditional)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(sParticipantInfoStringsAdditional));
                workingGameState = StructHelper.MergeWithExistingState(workingGameState, additional);
                handle.Free();
            }
            return(frameLength + offset);
        }
コード例 #2
0
 public static pCarsAPIStruct MergeWithExistingState(pCarsAPIStruct existingState, sParticipantInfoStringsAdditional udpAdditionalStrings)
 {
     if (existingState.mParticipantData == null)
     {
         existingState.mParticipantData = new pCarsAPIParticipantStruct[udpAdditionalStrings.sName.Count()];
     }
     for (int i = 0; i < udpAdditionalStrings.sName.Count(); i++)
     {
         String name = getNameFromBytes(udpAdditionalStrings.sName[i].nameByteArray);
         // TODO: will the mIsActive flag always have been set by the time we reach here?
         existingState.mParticipantData[i + udpAdditionalStrings.sOffset].mIsActive = name != null && name.Length > 0;
         existingState.mParticipantData[i + udpAdditionalStrings.sOffset].mName     = name;
     }
     return(existingState);
 }