public void DmacDataPDU(LogicChannel channelData, int offset, ReceivedData result) { offset = Global.ParseParams(channelData, offset, _dmacDataRules, result); var realLength = channelData.Length - offset; if (result.Value(GlobalNames.Fill_bit) != 0) { realLength = CalcRealLength(channelData.Ptr, offset, realLength); } HalfSlotStolen = result.Value(GlobalNames.Second_half_slot_stolen) == 1; //Debug.WriteIf(HalfSlotStolen, " Second_slot_stolen"); if (result.Value(GlobalNames.Fragmentation_flag) == 1) { Debug.Write(" Start_fragmented_PDU"); CreateFraqmentsBuffer(channelData, offset, realLength, result); return; } if (result.Value(GlobalNames.Null_pdu) == 1) { Debug.Write(" Null_PDU"); return; } //Debug.Write(" DMAC-Data_PDU " + (DMAC_Message_Type)result[GlobalNames.Message_type]); //Debug.WriteIf(result[GlobalNames.Air_interface_encryption] != 0, " Encr"); //_llc.Parse(channelData, offset, result); }
public void ResourcePDU(LogicChannel channelData, int offset, ReceivedData result) { var startOffset = offset - 2; offset = Global.ParseParams(channelData, offset, _macResourceRules, result); //Debug.Write(" | Resource_PDU"); var encr = result.Value(GlobalNames.Encryption_mode); var lengthIndication = result.Value(GlobalNames.Length_indication); //Only for pi/4 modulation HalfSlotStolen = (lengthIndication == 62) || (lengthIndication == 63); Debug.WriteIf(HalfSlotStolen, " Second_slot_stolen"); Debug.WriteIf(((lengthIndication < 62) && (lengthIndication > 58)), " Incorrect_PDU_length"); if (((lengthIndication > 58) && (lengthIndication < 62)) || (lengthIndication == 0) || result.Value(GlobalNames.Address_type) == 0) { result.Add(GlobalNames.Null_pdu, 1); //Debug.Write(" Null_PDU"); return; } if (encr != 0) // All data before channel allocation flag is clear { // after is encrypted Debug.Write(" Encr"); return; } offset = Global.ParseParams(channelData, offset, _channelAllocationRules, result); if (lengthIndication != 63) { _llc.Parse(channelData, offset, result); return; } var realLength = Math.Min(lengthIndication * 8 - (offset - startOffset), channelData.Length - offset); if (result.Value(GlobalNames.Fill_bit) != 0) { realLength = CalcRealLength(channelData.Ptr, offset, realLength); } if (realLength < 0) { result.Add(GlobalNames.UnknowData, 1); Debug.Write(" frag_length_err"); return; } //Debug.Write(" Start_fragmented_PDU"); CreateFraqmentsBuffer(channelData, offset, realLength, result); }
public void MacEndPDU(LogicChannel channelData, int offset, ReceivedData result) { var startOffset = offset - 3; offset = Global.ParseParams(channelData, offset, _macEndRules, result); //Debug.Write(" | FragEnd_PDU"); if (FraqmentsBufferIsEmpty(channelData.TimeSlot)) { Debug.Write(" Buffer_is_empty"); return; } offset = Global.ParseParams(channelData, offset, _channelAllocationRules, result); var lengthIndication = result.Value(GlobalNames.Length_indication); var realLength = Math.Min(lengthIndication * 8 - (offset - startOffset), channelData.Length - offset); if (lengthIndication > 58) { Debug.Write(" Incorrect_PDU_length"); result.Add(GlobalNames.Null_pdu, 1); return; } if (result.Value(GlobalNames.Fill_bit) != 0) { realLength = CalcRealLength(channelData.Ptr, offset, realLength); } if (realLength < 0) { result.Add(GlobalNames.UnknowData, 1); Debug.Write(" frag_length_err"); return; } AddFraqmentsToBuffer(channelData, offset, realLength); var newBuffer = GetDeFragmentedBuffer(channelData, result); if (newBuffer.Length == 0) { Debug.Write(" Defrag_PDU_length_err"); result.Add(GlobalNames.Null_pdu, 1); return; } //Debug.Write(" Defrag_PDU_length=" + newBuffer.Length.ToString()); offset = 0; _llc.Parse(newBuffer, offset, result); }
public void DmacEndPDU(LogicChannel channelData, int offset, ReceivedData result) { offset = Global.ParseParams(channelData, offset, _dmacEndRules, result); var realLength = channelData.Length - offset; if (result.Value(GlobalNames.Fill_bit) != 0) { realLength = CalcRealLength(channelData.Ptr, offset, realLength); } Debug.Write(" END_fragmented_PDU"); AddFraqmentsToBuffer(channelData, offset, realLength); var newBuffer = GetDeFragmentedBuffer(channelData, result); offset = 0; Debug.Write(" Defragmented_PDU_length=" + newBuffer.Length.ToString()); if (newBuffer.Length == 0) { return; } //_llc.Parse(newBuffer, offset, result); }
public void SyncPDUHalfSlot(LogicChannel channelData, ReceivedData result) { var pduType = -1; var offset = 0; if (result.TryGetValue(GlobalNames.SYNC_PDU_type, ref pduType)) { switch (pduType) { case 0: offset = Global.ParseParams(channelData, offset, _dmacSyncInfoHalfSlotRules, result); var realLength = channelData.Length - offset; if (result.Value(GlobalNames.Fill_bit) != 0) { realLength = CalcRealLength(channelData.Ptr, offset, realLength); } if (result.Value(GlobalNames.Fragmentation_flag) == 1) { Debug.Write(" Start_fragmented_PDU"); CreateFraqmentsBuffer(channelData, offset, realLength, result); } //Debug.Write(" " + (DMAC_Message_Type)result[GlobalNames.Message_type]); break; case 1: Global.ParseParams(channelData, 0, _dpresSyncInfoHalfSlotRules, result); break; default: Debug.Write(" Unknow_DMO_SyncPdu_type"); result.SetValue(GlobalNames.UnknowData, 1); break; } } }
private void ParseCMCEPDU(LogicChannel channelData, int offset, ReceivedData result) { var length = 5; var type = (CmcePrimitivesType)TetraUtils.BitsToInt32(channelData.Ptr, offset, length); offset += length; result.Add(GlobalNames.CMCE_Primitives_Type, (int)type); //Debug.Write(" " + type.ToString()); switch (type) { case CmcePrimitivesType.D_Connect: Global.ParseParams(channelData, offset, _d_connectRules, result); break; case CmcePrimitivesType.D_Setup: Global.ParseParams(channelData, offset, _d_setupRules, result); break; case CmcePrimitivesType.D_TX_Granted: Global.ParseParams(channelData, offset, _d_TX_GrantedRules, result); break; case CmcePrimitivesType.D_TX_Ceased: Global.ParseParams(channelData, offset, _d_TX_CeasedRules, result); break; case CmcePrimitivesType.D_Release: Global.ParseParams(channelData, offset, _d_ReleaseRules, result); break; case CmcePrimitivesType.D_Disconnect: break; case CmcePrimitivesType.D_Connect_Acknowledgea: break; case CmcePrimitivesType.D_Info: Global.ParseParams(channelData, offset, _d_infoRules, result); break; case CmcePrimitivesType.D_SDS_Data: offset = Global.ParseParams(channelData, offset, _d_SdsDataRules, result); if (result.Contains(GlobalNames.User_Defined_Data4_Length)) { var sdsData = new LogicChannel { Ptr = channelData.Ptr + offset, Length = result.Value(GlobalNames.User_Defined_Data4_Length), }; _sds.ParseSDS(sdsData, 0, result); } break; case CmcePrimitivesType.D_Alert: case CmcePrimitivesType.D_Call_Proceeding: case CmcePrimitivesType.D_Status: case CmcePrimitivesType.D_TX_Continue: case CmcePrimitivesType.D_TX_Wait: case CmcePrimitivesType.D_TX_Interrupt: case CmcePrimitivesType.D_Call_Restore: case CmcePrimitivesType.D_Facility: case CmcePrimitivesType.Reserved17: case CmcePrimitivesType.Reserved18: case CmcePrimitivesType.Reserved19: case CmcePrimitivesType.Reserved20: case CmcePrimitivesType.Reserved21: case CmcePrimitivesType.Reserved22: case CmcePrimitivesType.Reserved23: case CmcePrimitivesType.Reserved24: case CmcePrimitivesType.Reserved25: case CmcePrimitivesType.Reserved26: case CmcePrimitivesType.Reserved27: case CmcePrimitivesType.Reserved28: case CmcePrimitivesType.Reserved29: case CmcePrimitivesType.Reserved30: case CmcePrimitivesType.CMCE_Function_Not_Supported: //Debug.Write(" Unknow_CMCE_SDU"); result.Add(GlobalNames.UnknowData, 1); break; } }
public int Process(Burst burst, float *audioOut) { var trafficChannel = 0; BurstReceived = (burst.Type != BurstType.None); _timeCounter++; Ber = _averageBer; if (_timeCounter > 100) { Mer = (_badBurstCounter / _timeCounter) * 100.0f; _timeCounter = 0; _badBurstCounter = 0; } _networkTime.AddTimeSlot(); if (burst.Type == BurstType.None) { _haveErrors = true; if (TetraMode == Mode.TMO) { _badBurstCounter++; //Debug.WriteLine("burst err"); //Debug.Write(string.Format("ts:{0:0} fr:{1:00} Burst_Err", _networkTime.TimeSlot, _networkTime.Frame)); } return(trafficChannel); } _haveErrors = false; //Debug.WriteLine(""); //Debug.Write(string.Format("ts:{0:0} fr:{1:00}", _networkTime.TimeSlot, _networkTime.Frame)); //Debug.Write(" " + burst.Type.ToString()); _parse.ResetAACH(); _data.Clear(); _syncInfo.Clear(); #region Sync burst if (burst.Type == BurstType.SYNC) { _phyLevel.ExtractSBChannels(burst, _sb1BufferPtr); _logicChannel = _lowerMac.ExtractLogicChannelFromSB(_sb1BufferPtr, _sb1Buffer.Length); _badBurstCounter += _logicChannel.CrcIsOk ? 0.0f : 0.5f; _haveErrors |= !_logicChannel.CrcIsOk; _averageBer = _averageBer * 0.5f + _lowerMac.Ber * 0.5f; //Debug.Write(" slot 1:" + (_logicChannel.CrcIsOk ? " OK" : " Err")); if (_logicChannel.CrcIsOk) { _parse.SyncPDU(_logicChannel, _syncInfo); if (_syncInfo.Value(GlobalNames.SystemCode) < 8) { TetraMode = Mode.TMO; _lowerMac.ScramblerCode = TetraUtils.CreateScramblerCode(_syncInfo.Value(GlobalNames.MCC), _syncInfo.Value(GlobalNames.MNC), _syncInfo.Value(GlobalNames.ColorCode)); _networkTime.Synchronize(_syncInfo.Value(GlobalNames.TimeSlot), _syncInfo.Value(GlobalNames.Frame), _syncInfo.Value(GlobalNames.MultiFrame)); } else { TetraMode = Mode.DMO; if (_syncInfo.Value(GlobalNames.SYNC_PDU_type) == 0) { //Debug.Write(_syncInfo.Value(GlobalNames.Master_slave_link_flag) == 1 ? " Master" : " Slave"); if (_syncInfo.Value(GlobalNames.Master_slave_link_flag) == 1 || _syncInfo.Value(GlobalNames.Communication_type) == 0) { _networkTime.SynchronizeMaster(_syncInfo.Value(GlobalNames.TimeSlot), _syncInfo.Value(GlobalNames.Frame)); } else { _networkTime.SynchronizeSlave(_syncInfo.Value(GlobalNames.TimeSlot), _syncInfo.Value(GlobalNames.Frame)); } } } } else { //Debug.WriteLine("Sync SB crc error"); } _phyLevel.ExtractPhyChannels(TetraMode, burst, _bbBufferPtr, _bkn1BufferPtr, _bkn2BufferPtr); if (TetraMode == Mode.TMO) { _logicChannel = _lowerMac.ExtractLogicChannelFromBKN(_bkn2BufferPtr, _bkn2Buffer.Length); _logicChannel.TimeSlot = _networkTime.TimeSlot; _logicChannel.Frame = _networkTime.Frame; _badBurstCounter += _logicChannel.CrcIsOk ? 0.0f : 0.5f; _haveErrors |= !_logicChannel.CrcIsOk; _averageBer = _averageBer * 0.5f + _lowerMac.Ber * 0.5f; //Debug.Write(" slot 2:" + (_logicChannel.CrcIsOk ? " OK" : " Err")); if (_logicChannel.CrcIsOk) { _parse.TmoParseMacPDU(_logicChannel, _data); } else { //Debug.WriteLine("Sync BKN2 crc error"); } } else { _logicChannel = _lowerMac.ExtractLogicChannelFromBKN2(_bkn2BufferPtr, _bkn2Buffer.Length); _logicChannel.TimeSlot = _networkTime.TimeSlot; _logicChannel.Frame = _networkTime.Frame; _badBurstCounter += _logicChannel.CrcIsOk ? 0.0f : 0.5f; _haveErrors |= !_logicChannel.CrcIsOk; _averageBer = _averageBer * 0.5f + _lowerMac.Ber * 0.5f; //Debug.Write(" slot 2:" + (_logicChannel.CrcIsOk ? " OK" : " Err")); if (_logicChannel.CrcIsOk) { _parse.SyncPDUHalfSlot(_logicChannel, _syncInfo); if (_syncInfo.Value(GlobalNames.Communication_type) == 0) { if (_syncInfo.Contains(GlobalNames.MNC) && _syncInfo.Contains(GlobalNames.Source_address)) { _lowerMac.ScramblerCode = TetraUtils.CreateScramblerCode(_syncInfo.Value(GlobalNames.MNC), _syncInfo.Value(GlobalNames.Source_address)); } } else if (_syncInfo.Value(GlobalNames.Communication_type) == 1) { if (_syncInfo.Contains(GlobalNames.Repeater_address) && _syncInfo.Contains(GlobalNames.Source_address)) { _lowerMac.ScramblerCode = TetraUtils.CreateScramblerCode(_syncInfo.Value(GlobalNames.Repeater_address), _syncInfo.Value(GlobalNames.Source_address)); } } } } UpdateSyncInfo(_syncInfo); } #endregion UpdatePublicProp(); #region Other burst if (burst.Type != BurstType.SYNC) { _phyLevel.ExtractPhyChannels(TetraMode, burst, _bbBufferPtr, _bkn1BufferPtr, _bkn2BufferPtr); if (TetraMode == Mode.TMO) { _logicChannel = _lowerMac.ExtractLogicChannelFromBB(_bbBufferPtr, _bbBuffer.Length); _logicChannel.TimeSlot = _networkTime.TimeSlot; _logicChannel.Frame = _networkTime.Frame; _badBurstCounter += _logicChannel.CrcIsOk ? 0.0f : 0.2f; _haveErrors |= !_logicChannel.CrcIsOk; //Debug.Write(_logicChannel.CrcIsOk ? " BB OK" : " BB Err"); if (_logicChannel.CrcIsOk) { _parse.AccessAsignPDU(_logicChannel); } else { //Debug.WriteLine("BB crc error"); } } switch (burst.Type) { case BurstType.NDB1: if (((TetraMode == Mode.TMO) && (_parse.DownLinkChannelType == ChannelType.Traffic)) || ((TetraMode == Mode.DMO) && (!_networkTime.Frame18) && (_networkTime.TimeSlot == 1)) || ((TetraMode == Mode.DMO) && (!_networkTime.Frame18Slave) && (_networkTime.TimeSlotSlave == 1))) { //Debug.Write(" slot 12:voice"); _logicChannel = _lowerMac.ExtractVoiceDataFromBKN1BKN2(_bkn1BufferPtr, _bkn2BufferPtr, _bkn1Buffer.Length); var itsAudio = DecodeAudio(audioOut, _logicChannel.Ptr, _logicChannel.Length, false, _networkTime.TimeSlot); trafficChannel = itsAudio ? _networkTime.TimeSlot : 0; break; } else { _logicChannel = _lowerMac.ExtractLogicChannelFromBKN1BKN2(_bkn1BufferPtr, _bkn2BufferPtr, _bkn1Buffer.Length); _logicChannel.TimeSlot = _networkTime.TimeSlot; _logicChannel.Frame = _networkTime.Frame; _badBurstCounter += _logicChannel.CrcIsOk ? 0.0f : 0.8f; _haveErrors |= !_logicChannel.CrcIsOk; _averageBer = _averageBer * 0.5f + _lowerMac.Ber * 0.5f; //Debug.Write(" slot 12:" + (_logicChannel.CrcIsOk ? " OK" : " Err")); if (_logicChannel.CrcIsOk) { if (TetraMode == Mode.TMO) { _parse.TmoParseMacPDU(_logicChannel, _data); } else { _parse.DmoParseMacPDU(_logicChannel, _data); } } else { //Debug.WriteLine("BKN1 BKN2 crc error"); } } break; case BurstType.NDB2: _logicChannel = _lowerMac.ExtractLogicChannelFromBKN(_bkn1BufferPtr, _bkn1Buffer.Length); _logicChannel.TimeSlot = _networkTime.TimeSlot; _logicChannel.Frame = _networkTime.Frame; _badBurstCounter += _logicChannel.CrcIsOk ? 0.0f : 0.4f; _haveErrors |= !_logicChannel.CrcIsOk; _averageBer = _averageBer * 0.5f + _lowerMac.Ber * 0.5f; //Debug.Write(" slot 1:" + (_logicChannel.CrcIsOk ? " OK" : " Err")); if (_logicChannel.CrcIsOk) { if (TetraMode == Mode.TMO) { _parse.TmoParseMacPDU(_logicChannel, _data); } else { _parse.DmoParseMacPDU(_logicChannel, _data); } } else { //Debug.WriteLine("BKN1 crc error"); } if ((_parse.DownLinkChannelType == ChannelType.Traffic && !_parse.HalfSlotStolen) || ((TetraMode == Mode.DMO) && (!_networkTime.Frame18) && (_networkTime.TimeSlot == 1) && (!_parse.HalfSlotStolen)) || ((TetraMode == Mode.DMO) && (!_networkTime.Frame18Slave) && (_networkTime.TimeSlotSlave == 1) && (!_parse.HalfSlotStolen))) { //Debug.Write(" slot 2:voice"); _logicChannel = _lowerMac.ExtractVoiceDataFromBKN2(_bkn2BufferPtr, _bkn2Buffer.Length); var itsAudio = DecodeAudio(audioOut, _logicChannel.Ptr, _logicChannel.Length, true, _networkTime.TimeSlot); trafficChannel = itsAudio ? _networkTime.TimeSlot : 0; break; } else { _logicChannel = _lowerMac.ExtractLogicChannelFromBKN(_bkn2BufferPtr, _bkn2Buffer.Length); _logicChannel.TimeSlot = _networkTime.TimeSlot; _logicChannel.Frame = _networkTime.Frame; _badBurstCounter += _logicChannel.CrcIsOk ? 0.0f : 0.4f; _haveErrors |= !_logicChannel.CrcIsOk; _averageBer = _averageBer * 0.5f + _lowerMac.Ber * 0.5f; //Debug.Write(" slot 2:" + (_logicChannel.CrcIsOk ? " OK" : " Err")); if (_logicChannel.CrcIsOk) { if (TetraMode == Mode.TMO) { _parse.TmoParseMacPDU(_logicChannel, _data); } else { _parse.DmoParseMacPDU(_logicChannel, _data); } } else { //Debug.WriteLine("BKN2 crc error"); } } break; default: break; } } if (_data.Count > 0) { UpdateData(_data); } #endregion return(trafficChannel); }
public static int ParseParams(LogicChannel channelData, int offset, Rules[] rules, ReceivedData result) { var skipRules = 0; for (int i = 0; i < rules.Length; i++) { if (offset >= channelData.Length) { if (!result.Contains(GlobalNames.OutOfBuffer)) { result.SetValue(GlobalNames.OutOfBuffer, 1); } return(offset); } if (skipRules > 0) { skipRules--; continue; } var param = rules[i]; var value = TetraUtils.BitsToInt32(channelData.Ptr, offset, param.Length); switch (param.Type) { case RulesType.Direct: if (param.GlobalName != GlobalNames.Reserved) { result.SetValue(param.GlobalName, value); } offset += param.Length; continue; case RulesType.Options_bit: offset += param.Length; if (value == 0) { return(offset); } break; case RulesType.Presence_bit: if (value == 0) { skipRules = param.Ext1; } offset += param.Length; break; case RulesType.More_bit: offset += param.Length; return(offset); case RulesType.Switch: if (result.Value((GlobalNames)rules[i].Ext1) == rules[i].Ext2) { if (param.GlobalName != GlobalNames.Reserved) { result.SetValue(param.GlobalName, value); } offset += param.Length; } break; case RulesType.SwitchNot: if (result.Value((GlobalNames)rules[i].Ext1) != rules[i].Ext2) { if (param.GlobalName != GlobalNames.Reserved) { result.SetValue(param.GlobalName, value); } offset += param.Length; } break; case RulesType.Jamp: if (result.Value((GlobalNames)rules[i].Ext1) == rules[i].Ext2) { skipRules = param.Ext3; } break; case RulesType.JampNot: if (result.Value((GlobalNames)rules[i].Ext1) != rules[i].Ext2) { skipRules = param.Ext3; } break; case RulesType.Reserved: { offset += param.Length; } break; } } return(offset); }
private unsafe void ParseTextMessage(LogicChannel channelData, int offset, ReceivedData result) { if (result.Contains(GlobalNames.OutOfBuffer)) { return; } var codingSheme = result.Value(GlobalNames.Text_coding_scheme); Encoding encTable = Encoding.GetEncoding("iso-8859-1"); int symbLength = 8; switch (codingSheme) { case 1: encTable = Encoding.GetEncoding("iso-8859-1"); break; case 2: encTable = Encoding.GetEncoding("iso-8859-2"); break; case 3: encTable = Encoding.GetEncoding("iso-8859-3"); break; case 4: encTable = Encoding.GetEncoding("iso-8859-4"); break; case 5: encTable = Encoding.GetEncoding("iso-8859-5"); break; case 6: encTable = Encoding.GetEncoding("iso-8859-6"); break; case 7: encTable = Encoding.GetEncoding("iso-8859-7"); break; case 8: encTable = Encoding.GetEncoding("iso-8859-8"); break; case 9: encTable = Encoding.GetEncoding("iso-8859-9"); break; case 10: encTable = Encoding.GetEncoding("iso-8859-10"); break; case 11: encTable = Encoding.GetEncoding("iso-8859-13"); break; case 12: encTable = Encoding.GetEncoding("iso-8859-14"); break; case 13: encTable = Encoding.GetEncoding("iso-8859-15"); break; case 14: encTable = Encoding.GetEncoding(437); break; case 15: encTable = Encoding.GetEncoding(737); break; case 16: encTable = Encoding.GetEncoding(850); break; case 17: encTable = Encoding.GetEncoding(852); break; case 18: encTable = Encoding.GetEncoding(855); break; case 19: encTable = Encoding.GetEncoding(857); break; case 20: encTable = Encoding.GetEncoding(860); break; case 21: encTable = Encoding.GetEncoding(861); break; case 22: encTable = Encoding.GetEncoding(863); break; case 23: encTable = Encoding.GetEncoding(865); break; case 24: encTable = Encoding.GetEncoding(866); break; case 25: encTable = Encoding.GetEncoding(869); break; default: break; result.Add(GlobalNames.UnknowData, 1); return; } Decoder dec = encTable.GetDecoder(); var messageLength = (channelData.Length - offset) / symbLength; if (messageLength < 0) { return; } string message; byte[] symbolsArray = new byte[messageLength]; int index = 0; while (messageLength > 0) { symbolsArray[index++] = TetraUtils.BitsToByte(channelData.Ptr, offset, symbLength); offset += symbLength; messageLength--; } message = encTable.GetString(symbolsArray); Debug.WriteLine(" data:" + message); }
public void TmoParseMacPDU(LogicChannel channelData, List <ReceivedData> result) { var nullPduLength = 16; // only for receive pi/4 modulation ; var blockOffset = 0; var nullPdu = false; var pduEnd = false; for (int i = 0; i < 5; i++) { var offset = blockOffset; var pdu = new ReceivedData(); pdu.Add(GlobalNames.CurrTimeSlot, channelData.TimeSlot); var resourceType = (MAC_PDU_Type)TetraUtils.BitsToInt32(channelData.Ptr, offset, 2); offset += 2; pdu.Add(GlobalNames.MAC_PDU_Type, (int)resourceType); switch (resourceType) { case MAC_PDU_Type.Broadcast: blockOffset = SysInfoPDU(channelData, offset, pdu); break; case MAC_PDU_Type.MAC_resource: ResourcePDU(channelData, offset, pdu); blockOffset += (pdu.Value(GlobalNames.Length_indication) * 8); break; case MAC_PDU_Type.MAC_U_Signal: if (channelData.Length == 124) { UsignalPDU(channelData, offset, pdu); pduEnd = true; } else { Debug.Write(" MAC-D-BLCK_PDU"); pduEnd = true; } break; case MAC_PDU_Type.MAC_frag: var isTheEnd = TetraUtils.BitsToInt32(channelData.Ptr, offset, 1); offset++; if (isTheEnd == 0) { MacFraqPDU(channelData, offset, pdu); pduEnd = true; } else { MacEndPDU(channelData, offset, pdu); blockOffset += (pdu.Value(GlobalNames.Length_indication) * 8); } break; } nullPdu = pdu.Contains(GlobalNames.Null_pdu) || pdu.Contains(GlobalNames.OutOfBuffer); if (nullPdu) { pduEnd = true; } //if (pdu.ContainsKey(GlobalNames.UnknowData)) nullPdu = true; if (!nullPdu) { result.Add(pdu); } if ((blockOffset >= (channelData.Length - nullPduLength)) || pduEnd) { break; } } }