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121 lines
3.7 KiB
121 lines
3.7 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 "nxdn/lc/rcch/RCCHFactory.h"
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#include "Log.h"
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#include "Utils.h"
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using namespace nxdn::lc::rcch;
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using namespace nxdn::lc;
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using namespace nxdn;
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#include <cassert>
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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 RCCHFactory class.
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/// </summary>
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RCCHFactory::RCCHFactory()
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{
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/* stub */
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}
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/// <summary>
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/// Finalizes a instance of RCCHFactory class.
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/// </summary>
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RCCHFactory::~RCCHFactory()
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{
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/* stub */
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}
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/// <summary>
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/// Create an instance of a RCCH.
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/// </summary>
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/// <param name="data"></param>
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/// <param name="length"></param>
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/// <param name="offset"></param>
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/// <returns>True, if RCCH was decoded, otherwise false.</returns>
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std::unique_ptr<RCCH> RCCHFactory::createRCCH(const uint8_t* data, uint32_t length, uint32_t offset)
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{
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assert(data != nullptr);
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uint8_t rcch[22U];
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::memset(rcch, 0x00U, NXDN_RCCH_LC_LENGTH_BYTES + 4U);
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for (uint32_t i = 0U; i < length; i++, offset++) {
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bool b = READ_BIT(data, offset);
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WRITE_BIT(rcch, i, b);
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}
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uint8_t messageType = data[0U] & 0x3FU; // Message Type
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// message type opcodes
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switch (messageType) {
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case RTCH_MESSAGE_TYPE_VCALL:
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case RCCH_MESSAGE_TYPE_VCALL_CONN:
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return decode(new MESSAGE_TYPE_VCALL_CONN(), data, length, offset);
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case RTCH_MESSAGE_TYPE_DCALL_HDR:
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return decode(new MESSAGE_TYPE_DCALL_HDR(), data, length, offset);
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case nxdn::MESSAGE_TYPE_IDLE:
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return decode(new MESSAGE_TYPE_IDLE(), data, length, offset);
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case RCCH_MESSAGE_TYPE_REG:
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return decode(new MESSAGE_TYPE_REG(), data, length, offset);
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case RCCH_MESSAGE_TYPE_REG_C:
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return decode(new MESSAGE_TYPE_REG_C(), data, length, offset);
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case RCCH_MESSAGE_TYPE_GRP_REG:
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return decode(new MESSAGE_TYPE_GRP_REG(), data, length, offset);
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default:
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LogError(LOG_NXDN, "RCCH::decodeRCCH(), unknown RCCH value, messageType = $%02X", messageType);
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return nullptr;
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}
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return nullptr;
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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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///
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/// </summary>
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/// <param name="rcch"></param>
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/// <param name="data"></param>
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/// <param name="length"></param>
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/// <param name="offset"></param>
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/// <returns></returns>
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std::unique_ptr<RCCH> RCCHFactory::decode(RCCH* rcch, const uint8_t* data, uint32_t length, uint32_t offset)
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{
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assert(rcch != nullptr);
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assert(data != nullptr);
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rcch->decode(data, length, offset);
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return std::unique_ptr<RCCH>(rcch);
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}
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