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108 lines
4.2 KiB
108 lines
4.2 KiB
/**
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* Digital Voice 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 / Host Software
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*
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*/
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/*
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* Copyright (C) 2018 by Bryan Biedenkapp N2PLL
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#if !defined(__P25_DATA__DATA_HEADER_H__)
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#define __P25_DATA__DATA_HEADER_H__
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#include "Defines.h"
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#include "p25/edac/Trellis.h"
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#include <string>
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namespace p25
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{
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namespace data
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{
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// ---------------------------------------------------------------------------
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// Class Declaration
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// Represents the data header for PDU P25 packets.
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// ---------------------------------------------------------------------------
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class HOST_SW_API DataHeader {
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public:
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/// <summary>Initializes a new instance of the DataHeader class.</summary>
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DataHeader();
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/// <summary>Finalizes a instance of the DataHeader class.</summary>
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~DataHeader();
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/// <summary>Decodes P25 PDU data header.</summary>
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bool decode(const uint8_t* data);
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/// <summary>Encodes P25 PDU data header.</summary>
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void encode(uint8_t* data);
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/// <summary>Helper to reset data values to defaults.</summary>
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void reset();
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/// <summary>Gets the total number of data octets.</summary>
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uint32_t getDataOctets() const;
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/** Common Data */
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/// <summary>Sets the total number of blocks to follow this header.</summary>
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void setBlocksToFollow(uint8_t blocksToFollow);
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/// <summary>Gets the total number of blocks to follow this header.</summary>
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uint8_t getBlocksToFollow() const;
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/// <summary>Sets the count of block padding.</summary>
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void setPadCount(uint8_t padCount);
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/// <summary>Gets the count of block padding.</summary>
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uint8_t getPadCount() const;
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public:
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/// <summary>Flag indicating if acknowledgement is needed.</summary>
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__PROPERTY(bool, ackNeeded, AckNeeded);
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/// <summary>Flag indicating if this is an outbound data packet.</summary>
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__PROPERTY(bool, outbound, Outbound);
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/// <summary>Data packet format.</summary>
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__PROPERTY(uint8_t, fmt, Format);
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/// <summary>Service access point.</summary>
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__PROPERTY(uint8_t, sap, SAP);
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/// <summary>Manufacturer ID.</summary>
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__PROPERTY(uint8_t, mfId, MFId);
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/// <summary>Logical link ID.</summary>
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__PROPERTY(uint32_t, llId, LLId);
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/// <summary>Flag indicating whether or not this data packet is a full message.</summary>
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__PROPERTY(bool, fullMessage, FullMessage);
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/// <summary></summary>
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__PROPERTY(bool, sync, Sync);
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/// <summary></summary>
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__PROPERTY(uint8_t, n, N);
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/// <summary>Data packet sequence number.</summary>
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__PROPERTY(uint8_t, seqNo, SeqNo);
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/// <summary>Offset of the header.</summary>
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__PROPERTY(uint8_t, headerOffset, HeaderOffset);
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/// <summary>Alternate Trunking Block Opcode</summary>
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__PROPERTY(uint8_t, ambtOpcode, AMBTOpcode);
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private:
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edac::Trellis m_trellis;
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uint8_t m_blocksToFollow;
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uint8_t m_padCount;
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uint32_t m_dataOctets;
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};
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} // namespace data
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} // namespace p25
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#endif // __P25_DATA__DATA_HEADER_H__
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