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111 lines
3.5 KiB
111 lines
3.5 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) 2022 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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#include "Defines.h"
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#include "p25/lc/tsbk/IOSP_EXT_FNCT.h"
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#include "Log.h"
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#include "Utils.h"
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using namespace p25::lc::tsbk;
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using namespace p25::lc;
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using namespace p25;
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#include <cassert>
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#include <cmath>
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// ---------------------------------------------------------------------------
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// Public Class Members
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// ---------------------------------------------------------------------------
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/// <summary>
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/// Initializes a new instance of the IOSP_EXT_FNCT class.
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/// </summary>
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IOSP_EXT_FNCT::IOSP_EXT_FNCT() : TSBK(),
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m_extendedFunction(P25_EXT_FNCT_CHECK)
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{
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m_lco = TSBK_IOSP_EXT_FNCT;
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}
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/// <summary>
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/// Decode a trunking signalling block.
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/// </summary>
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/// <param name="data"></param>
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/// <param name="rawTSBK"></param>
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/// <returns>True, if TSBK was decoded, otherwise false.</returns>
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bool IOSP_EXT_FNCT::decode(const uint8_t* data, bool rawTSBK)
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{
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assert(data != NULL);
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uint8_t tsbk[P25_TSBK_LENGTH_BYTES + 1U];
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::memset(tsbk, 0x00U, P25_TSBK_LENGTH_BYTES);
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bool ret = TSBK::decode(data, tsbk, rawTSBK);
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if (!ret)
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return false;
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ulong64_t tsbkValue = TSBK::toValue(tsbk);
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m_extendedFunction = (uint32_t)((tsbkValue >> 48) & 0xFFFFU); // Extended Function
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m_dstId = (uint32_t)((tsbkValue >> 24) & 0xFFFFFFU); // Argument
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m_srcId = (uint32_t)(tsbkValue & 0xFFFFFFU); // Target Radio Address
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return true;
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}
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/// <summary>
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/// Encode a trunking signalling block.
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/// </summary>
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/// <param name="data"></param>
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/// <param name="rawTSBK"></param>
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/// <param name="noTrellis"></param>
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void IOSP_EXT_FNCT::encode(uint8_t* data, bool rawTSBK, bool noTrellis)
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{
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assert(data != NULL);
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ulong64_t tsbkValue = 0U;
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tsbkValue = (tsbkValue << 16) + m_extendedFunction; // Extended Function
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tsbkValue = (tsbkValue << 24) + m_srcId; // Argument
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tsbkValue = (tsbkValue << 24) + m_dstId; // Target Radio Address
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std::unique_ptr<uint8_t[]> tsbk = TSBK::fromValue(tsbkValue);
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TSBK::encode(data, tsbk.get(), rawTSBK, noTrellis);
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}
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// ---------------------------------------------------------------------------
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// Private Class Members
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// ---------------------------------------------------------------------------
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/// <summary>
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/// Internal helper to copy the the class.
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/// </summary>
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/// <param name="data"></param>
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void IOSP_EXT_FNCT::copy(const IOSP_EXT_FNCT& data)
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{
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TSBK::copy(data);
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m_extendedFunction = data.m_extendedFunction;
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}
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