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141 lines
5.6 KiB
141 lines
5.6 KiB
// SPDX-License-Identifier: GPL-2.0-only
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/**
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* Digital Voice Modem - Modem Host Software
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* GPLv2 Open Source. Use is subject to license terms.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* @package DVM / Modem Host Software
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* @derivedfrom MMDVMHost (https://github.com/g4klx/MMDVMHost)
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* @license GPLv2 License (https://opensource.org/licenses/GPL-2.0)
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*
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* Copyright (C) 2016,2017 Jonathan Naylor, G4KLX
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* Copyright (C) 2017-2024 Bryan Biedenkapp, N2PLL
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*
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*/
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#if !defined(__P25_PACKET_DATA_H__)
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#define __P25_PACKET_DATA_H__
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#include "Defines.h"
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#include "common/p25/data/DataBlock.h"
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#include "common/p25/data/DataHeader.h"
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#include "common/p25/data/LowSpeedData.h"
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#include "common/p25/lc/LC.h"
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#include "common/Timer.h"
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#include "p25/Control.h"
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#include <cstdio>
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#include <string>
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#include <unordered_map>
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namespace p25
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{
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// ---------------------------------------------------------------------------
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// Class Prototypes
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// ---------------------------------------------------------------------------
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class HOST_SW_API Control;
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namespace packet { class HOST_SW_API Trunk; }
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namespace packet
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{
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// ---------------------------------------------------------------------------
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// Class Declaration
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// This class implements handling logic for P25 data packets.
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// ---------------------------------------------------------------------------
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class HOST_SW_API Data {
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public:
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/// <summary>Resets the data states for the RF interface.</summary>
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void resetRF();
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/// <summary>Process a data frame from the RF interface.</summary>
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bool process(uint8_t* data, uint32_t len);
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/// <summary>Process a data frame from the network.</summary>
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bool processNetwork(uint8_t* data, uint32_t len, uint32_t blockLength);
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/// <summary>Helper to check if a logical link ID has registered with data services.</summary>
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bool hasLLIdFNEReg(uint32_t llId) const;
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/// <summary>Helper to write user data as a P25 PDU packet.</summary>
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void writeRF_PDU_User(data::DataHeader& dataHeader, data::DataHeader& secondHeader, bool useSecondHeader, uint8_t* pduUserData);
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/// <summary>Updates the processor by the passed number of milliseconds.</summary>
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void clock(uint32_t ms);
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/** SNDCP */
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/// <summary>Helper to initialize the SNDCP state for a logical link ID.</summary>
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virtual void sndcpInitialize(uint32_t srcId);
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/// <summary>Helper to determine if the logical link ID has been SNDCP initialized.</summary>
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virtual bool isSNDCPInitialized(uint32_t srcId) const;
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private:
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friend class p25::Control;
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Control* m_p25;
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RPT_RF_STATE m_prevRfState;
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data::DataBlock* m_rfData;
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data::DataHeader m_rfDataHeader;
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data::DataHeader m_rfSecondHeader;
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bool m_rfUseSecondHeader;
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bool m_rfExtendedAddress;
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uint8_t m_rfDataBlockCnt;
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uint8_t* m_rfPDU;
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uint32_t m_rfPDUCount;
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uint32_t m_rfPDUBits;
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data::DataBlock* m_netData;
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data::DataHeader m_netDataHeader;
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data::DataHeader m_netSecondHeader;
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bool m_netUseSecondHeader;
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bool m_netExtendedAddress;
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uint32_t m_netDataOffset;
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uint8_t m_netDataBlockCnt;
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uint8_t* m_netPDU;
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uint32_t m_netPDUCount;
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uint8_t* m_pduUserData;
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uint32_t m_pduUserDataLength;
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std::unordered_map<uint32_t, ulong64_t> m_fneRegTable;
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std::unordered_map<uint32_t, std::tuple<uint8_t, ulong64_t>> m_connQueueTable;
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std::unordered_map<uint32_t, Timer> m_connTimerTable;
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std::unordered_map<uint32_t, defines::SNDCPState::E> m_sndcpStateTable;
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std::unordered_map<uint32_t, Timer> m_sndcpReadyTimers;
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std::unordered_map<uint32_t, Timer> m_sndcpStandyTimers;
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bool m_dumpPDUData;
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bool m_repeatPDU;
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bool m_verbose;
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bool m_debug;
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/// <summary>Initializes a new instance of the Data class.</summary>
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Data(Control* p25, bool dumpPDUData, bool repeatPDU, bool debug, bool verbose);
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/// <summary>Finalizes a instance of the Data class.</summary>
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~Data();
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/// <summary>Helper used to process SNDCP control data from PDU data.</summary>
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bool processSNDCP();
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/// <summary>Write data processed from RF to the network.</summary>
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void writeNetwork(const uint8_t currentBlock, const uint8_t* data, uint32_t len, bool lastBlock);
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/// <summary>Helper to write a P25 PDU packet.</summary>
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void writeRF_PDU(const uint8_t* pdu, uint32_t bitLength, bool noNulls = false);
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/// <summary>Helper to write a network P25 PDU packet.</summary>
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void writeNet_PDU_Buffered();
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/// <summary>Helper to re-write a received P25 PDU packet.</summary>
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void writeRF_PDU_Buffered();
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/// <summary>Helper to write a PDU registration response.</summary>
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void writeRF_PDU_Reg_Response(uint8_t regType, uint8_t mfId, uint32_t llId, ulong64_t ipAddr);
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/// <summary>Helper to write a PDU acknowledge response.</summary>
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void writeRF_PDU_Ack_Response(uint8_t ackClass, uint8_t ackType, uint8_t ackStatus, uint32_t llId, uint32_t srcLlId = 0U, bool noNulls = false);
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};
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} // namespace packet
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} // namespace p25
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#endif // __P25_PACKET_DATA_H__
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