2017-08-22 14:23:57 -04:00
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//
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// cdmrplusprotocol.cpp
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// xlxd
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//
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// Created by Jean-Luc Deltombe (LX3JL) on 10/01/2016.
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// Copyright © 2015 Jean-Luc Deltombe (LX3JL). All rights reserved.
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//
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// ----------------------------------------------------------------------------
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// This file is part of xlxd.
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//
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// xlxd 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 3 of the License, or
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// (at your option) any later version.
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//
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// xlxd 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
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// ----------------------------------------------------------------------------
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#include "main.h"
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#include <string.h>
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#include "cdmrplusclient.h"
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#include "cdmrplusprotocol.h"
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#include "creflector.h"
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#include "cgatekeeper.h"
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#include "cdmriddir.h"
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#include "cbptc19696.h"
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#include "crs129.h"
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#include "cgolay2087.h"
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#include "cqr1676.h"
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////////////////////////////////////////////////////////////////////////////////////////
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// constants
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static uint8 g_DmrSyncBSVoice[] = { 0x07,0x55,0xFD,0x7D,0xF7,0x5F,0x70 };
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static uint8 g_DmrSyncBSData[] = { 0x0D,0xFF,0x57,0xD7,0x5D,0xF5,0xD0 };
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static uint8 g_DmrSyncMSVoice[] = { 0x07,0xF7,0xD5,0xDD,0x57,0xDF,0xD0 };
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static uint8 g_DmrSyncMSData[] = { 0x0D,0x5D,0x7F,0x77,0xFD,0x75,0x70 };
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////////////////////////////////////////////////////////////////////////////////////////
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// operation
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bool CDmrplusProtocol::Init(void)
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{
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bool ok;
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// base class
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ok = CProtocol::Init();
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// update the reflector callsign
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//m_ReflectorCallsign.PatchCallsign(0, (const uint8 *)"DMR", 3);
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// create our socket
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ok &= m_Socket.Open(DMRPLUS_PORT);
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// update time
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m_LastKeepaliveTime.Now();
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// random number generator
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time_t t;
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::srand((unsigned) time(&t));
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// done
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return ok;
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}
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////////////////////////////////////////////////////////////////////////////////////////
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// task
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void CDmrplusProtocol::Task(void)
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{
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CBuffer Buffer;
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CIp Ip;
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CCallsign Callsign;
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char ToLinkModule;
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CDvHeaderPacket *Header;
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CDvFramePacket *Frames[3];
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// handle incoming packets
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if ( m_Socket.Receive(&Buffer, &Ip, 20) != -1 )
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{
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// crack the packet
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if ( IsValidDvFramePacket(Ip, Buffer, Frames) )
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{
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//std::cout << "DMRplus DV frame" << std::endl;
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//Buffer.DebugDump(g_Reflector.m_DebugFile);
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for ( int i = 0; i < 3; i++ )
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{
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OnDvFramePacketIn(Frames[i], &Ip);
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/*if ( !Frames[i]->IsLastPacket() )
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{
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//std::cout << "DMRplus DV frame" << std::endl;
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2019-03-16 10:57:24 -04:00
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OnDvFramePacketIn(Frames[i], &Ip);
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2017-08-22 14:23:57 -04:00
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}
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else
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{
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//std::cout << "DMRplus DV last frame" << std::endl;
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2019-03-16 10:57:24 -04:00
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OnDvLastFramePacketIn((CDvLastFramePacket *)Frames[i], &Ip);
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2017-08-22 14:23:57 -04:00
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}*/
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}
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}
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else if ( IsValidDvHeaderPacket(Ip, Buffer, &Header) )
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{
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//std::cout << "DMRplus DV header:" << std::endl;
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//std::cout << "DMRplus DV header:" << std::endl << *Header << std::endl;
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//Buffer.DebugDump(g_Reflector.m_DebugFile);
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// callsign muted?
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if ( g_GateKeeper.MayTransmit(Header->GetMyCallsign(), Ip, PROTOCOL_DMRPLUS) )
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{
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// handle it
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OnDvHeaderPacketIn(Header, Ip);
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}
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else
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{
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delete Header;
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}
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}
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2017-08-29 22:51:28 -04:00
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else if ( IsValidConnectPacket(Buffer, &Callsign, &ToLinkModule, Ip) )
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2017-08-22 14:23:57 -04:00
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{
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//std::cout << "DMRplus keepalive/connect packet for module " << ToLinkModule << " from " << Callsign << " at " << Ip << std::endl;
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// callsign authorized?
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if ( g_GateKeeper.MayLink(Callsign, Ip, PROTOCOL_DMRPLUS) )
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{
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// acknowledge the request
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EncodeConnectAckPacket(&Buffer);
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m_Socket.Send(Buffer, Ip);
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// add client if needed
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CClients *clients = g_Reflector.GetClients();
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CClient *client = clients->FindClient(Callsign, Ip, PROTOCOL_DMRPLUS);
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// client already connected ?
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if ( client == NULL )
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{
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std::cout << "DMRplus connect packet for module " << ToLinkModule << " from " << Callsign << " at " << Ip << std::endl;
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// create the client
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CDmrplusClient *newclient = new CDmrplusClient(Callsign, Ip, ToLinkModule);
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// and append
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clients->AddClient(newclient);
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}
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else
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{
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client->Alive();
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}
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// and done
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g_Reflector.ReleaseClients();
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}
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else
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{
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// deny the request
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EncodeConnectNackPacket(&Buffer);
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m_Socket.Send(Buffer, Ip);
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}
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}
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else if ( IsValidDisconnectPacket(Buffer, &Callsign, &ToLinkModule) )
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{
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std::cout << "DMRplus disconnect packet for module " << ToLinkModule << " from " << Callsign << " at " << Ip << std::endl;
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// find client & remove it
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CClients *clients = g_Reflector.GetClients();
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CClient *client = clients->FindClient(Ip, PROTOCOL_DMRPLUS);
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if ( client != NULL )
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{
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clients->RemoveClient(client);
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}
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g_Reflector.ReleaseClients();
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}
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else
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{
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//std::cout << "DMRPlus packet (" << Buffer.size() << ")" << " at " << Ip << std::endl;
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}
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}
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// handle end of streaming timeout
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CheckStreamsTimeout();
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// handle queue from reflector
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HandleQueue();
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// keep client alive
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if ( m_LastKeepaliveTime.DurationSinceNow() > DMRPLUS_KEEPALIVE_PERIOD )
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{
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//
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HandleKeepalives();
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// update time
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m_LastKeepaliveTime.Now();
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////
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// streams helpers
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bool CDmrplusProtocol::OnDvHeaderPacketIn(CDvHeaderPacket *Header, const CIp &Ip)
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{
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bool newstream = false;
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// find the stream
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CPacketStream *stream = GetStream(Header->GetStreamId());
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if ( stream == NULL )
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{
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// no stream open yet, open a new one
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// find this client
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CClient *client = g_Reflector.GetClients()->FindClient(Ip, PROTOCOL_DMRPLUS);
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if ( client != NULL )
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{
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// and try to open the stream
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if ( (stream = g_Reflector.OpenStream(Header, client)) != NULL )
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{
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// keep the handle
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m_Streams.push_back(stream);
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newstream = true;
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}
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}
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// release
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g_Reflector.ReleaseClients();
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}
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else
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{
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// stream already open
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// skip packet, but tickle the stream
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stream->Tickle();
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// and delete packet
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delete Header;
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}
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// update last heard
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g_Reflector.GetUsers()->Hearing(Header->GetMyCallsign(), Header->GetRpt1Callsign(), Header->GetRpt2Callsign());
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g_Reflector.ReleaseUsers();
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// delete header if needed
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if ( !newstream )
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{
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delete Header;
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}
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// done
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return newstream;
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}
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////////////////////////////////////////////////////////////////////////////////////////
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// queue helper
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void CDmrplusProtocol::HandleQueue(void)
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{
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m_Queue.Lock();
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while ( !m_Queue.empty() )
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{
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// get the packet
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CPacket *packet = m_Queue.front();
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m_Queue.pop();
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// get our sender's id
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int iModId = g_Reflector.GetModuleIndex(packet->GetModuleId());
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// encode
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CBuffer buffer;
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// check if it's header
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if ( packet->IsDvHeader() )
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{
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// update local stream cache
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// this relies on queue feeder setting valid module id
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m_StreamsCache[iModId].m_dvHeader = CDvHeaderPacket((const CDvHeaderPacket &)*packet);
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m_StreamsCache[iModId].m_uiSeqId = 4;
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// encode it
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EncodeDvHeaderPacket((const CDvHeaderPacket &)*packet, &buffer);
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}
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else
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{
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// update local stream cache or send triplet when needed
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switch ( packet->GetDmrPacketSubid() )
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{
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case 1:
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m_StreamsCache[iModId].m_dvFrame0 = CDvFramePacket((const CDvFramePacket &)*packet);
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break;
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case 2:
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m_StreamsCache[iModId].m_dvFrame1 = CDvFramePacket((const CDvFramePacket &)*packet);
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break;
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case 3:
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EncodeDvPacket(
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m_StreamsCache[iModId].m_dvHeader,
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m_StreamsCache[iModId].m_dvFrame0,
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m_StreamsCache[iModId].m_dvFrame1,
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(const CDvFramePacket &)*packet,
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m_StreamsCache[iModId].m_uiSeqId,
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&buffer);
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m_StreamsCache[iModId].m_uiSeqId = GetNextSeqId(m_StreamsCache[iModId].m_uiSeqId);
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break;
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default:
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break;
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}
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}
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// send it
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if ( buffer.size() > 0 )
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{
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// and push it to all our clients linked to the module and who are not streaming in
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CClients *clients = g_Reflector.GetClients();
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int index = -1;
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CClient *client = NULL;
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while ( (client = clients->FindNextClient(PROTOCOL_DMRPLUS, &index)) != NULL )
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{
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// is this client busy ?
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if ( !client->IsAMaster() && (client->GetReflectorModule() == packet->GetModuleId()) )
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{
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// no, send the packet
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m_Socket.Send(buffer, client->GetIp());
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}
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}
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g_Reflector.ReleaseClients();
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// debug
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//buffer.DebugDump(g_Reflector.m_DebugFile);
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}
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// done
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delete packet;
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}
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m_Queue.Unlock();
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}
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void CDmrplusProtocol::SendBufferToClients(const CBuffer &buffer, uint8 module)
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{
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if ( buffer.size() > 0 )
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{
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// and push it to all our clients linked to the module and who are not streaming in
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CClients *clients = g_Reflector.GetClients();
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int index = -1;
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CClient *client = NULL;
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while ( (client = clients->FindNextClient(PROTOCOL_DMRPLUS, &index)) != NULL )
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{
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// is this client busy ?
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if ( !client->IsAMaster() && (client->GetReflectorModule() == module) )
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{
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// no, send the packet
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m_Socket.Send(buffer, client->GetIp());
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}
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}
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g_Reflector.ReleaseClients();
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// debug
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//buffer.DebugDump(g_Reflector.m_DebugFile);
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////
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// keepalive helpers
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void CDmrplusProtocol::HandleKeepalives(void)
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{
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// DMRplus protocol keepalive request is client tasks
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// here, just check that all clients are still alive
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// and disconnect them if not
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// iterate on clients
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CClients *clients = g_Reflector.GetClients();
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int index = -1;
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CClient *client = NULL;
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while ( (client = clients->FindNextClient(PROTOCOL_DMRPLUS, &index)) != NULL )
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{
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// is this client busy ?
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if ( client->IsAMaster() )
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{
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// yes, just tickle it
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client->Alive();
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}
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// check it's still with us
|
|
|
|
else if ( !client->IsAlive() )
|
|
|
|
{
|
|
|
|
// no, disconnect
|
|
|
|
//CBuffer disconnect;
|
|
|
|
//EncodeDisconnectPacket(&disconnect, client);
|
|
|
|
//m_Socket.Send(disconnect, client->GetIp());
|
|
|
|
|
|
|
|
// remove it
|
|
|
|
std::cout << "DMRplus client " << client->GetCallsign() << " keepalive timeout" << std::endl;
|
|
|
|
clients->RemoveClient(client);
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
g_Reflector.ReleaseClients();
|
|
|
|
}
|
|
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// packet decoding helpers
|
|
|
|
|
2017-08-29 22:51:28 -04:00
|
|
|
bool CDmrplusProtocol::IsValidConnectPacket(const CBuffer &Buffer, CCallsign *callsign, char *reflectormodule, const CIp &Ip)
|
2017-08-22 14:23:57 -04:00
|
|
|
{
|
|
|
|
bool valid = false;
|
|
|
|
if ( Buffer.size() == 31 )
|
|
|
|
{
|
|
|
|
char sz[9];
|
|
|
|
::memcpy(sz, Buffer.data(), 8);
|
|
|
|
sz[8] = 0;
|
|
|
|
uint32 dmrid = atoi(sz);
|
|
|
|
callsign->SetDmrid(dmrid, true);
|
2017-08-28 19:16:01 -04:00
|
|
|
callsign->SetModule(DMRPLUS_MODULE_ID);
|
2017-08-22 14:23:57 -04:00
|
|
|
::memcpy(sz, &Buffer.data()[8], 4);
|
|
|
|
sz[4] = 0;
|
|
|
|
*reflectormodule = DmrDstIdToModule(atoi(sz));
|
|
|
|
valid = (callsign->IsValid() && (std::isupper(*reflectormodule) || (*reflectormodule == ' ')) );
|
|
|
|
if ( !valid)
|
|
|
|
{
|
2017-08-29 22:51:28 -04:00
|
|
|
std::cout << "DMRplus connect packet from IP address " << Ip << " / unrecognized id " << (int)callsign->GetDmrid() << std::endl;
|
2017-08-22 14:23:57 -04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return valid;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool CDmrplusProtocol::IsValidDisconnectPacket(const CBuffer &Buffer, CCallsign *callsign, char *reflectormodule)
|
|
|
|
{
|
|
|
|
bool valid = false;
|
|
|
|
if ( Buffer.size() == 32 )
|
|
|
|
{
|
|
|
|
char sz[9];
|
|
|
|
::memcpy(sz, Buffer.data(), 8);
|
|
|
|
sz[8] = 0;
|
|
|
|
uint32 dmrid = atoi(sz);
|
|
|
|
callsign->SetDmrid(dmrid, true);
|
2017-08-28 19:16:01 -04:00
|
|
|
callsign->SetModule(DMRPLUS_MODULE_ID);
|
2017-08-22 14:23:57 -04:00
|
|
|
*reflectormodule = Buffer.data()[11] - '0' + 'A';
|
|
|
|
valid = (callsign->IsValid() && std::isupper(*reflectormodule));
|
|
|
|
}
|
|
|
|
return valid;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool CDmrplusProtocol::IsValidDvHeaderPacket(const CIp &Ip, const CBuffer &Buffer, CDvHeaderPacket **Header)
|
|
|
|
{
|
|
|
|
bool valid = false;
|
|
|
|
*Header = NULL;
|
|
|
|
|
|
|
|
uint8 uiPacketType = Buffer.data()[8];
|
|
|
|
if ( (Buffer.size() == 72) && ( uiPacketType == 2 ) )
|
|
|
|
{
|
|
|
|
// frame details
|
|
|
|
uint8 uiSlot = (Buffer.data()[16] == 0x22) ? DMR_SLOT2 : DMR_SLOT1;
|
|
|
|
uint8 uiCallType = (Buffer.data()[62] == 1) ? DMR_GROUP_CALL : DMR_PRIVATE_CALL;
|
|
|
|
uint8 uiColourCode = Buffer.data()[20] & 0x0F;
|
|
|
|
if ( (uiSlot == DMRPLUS_REFLECTOR_SLOT) && (uiCallType == DMR_GROUP_CALL) && (uiColourCode == DMRPLUS_REFLECTOR_COLOUR) )
|
|
|
|
{
|
|
|
|
// more frames details
|
|
|
|
//uint8 uiSeqId = Buffer.data()[4];
|
|
|
|
//uint8 uiVoiceSeq = (Buffer.data()[18] & 0x0F) - 7; // aka slot type
|
|
|
|
uint32 uiDstId = *(uint32 *)(&Buffer.data()[64]) & 0x00FFFFFF;
|
|
|
|
uint32 uiSrcId = *(uint32 *)(&Buffer.data()[68]) & 0x00FFFFFF;
|
|
|
|
|
|
|
|
// build DVHeader
|
|
|
|
CCallsign csMY = CCallsign("", uiSrcId);
|
|
|
|
CCallsign rpt1 = CCallsign("", uiSrcId);
|
2017-08-28 19:16:01 -04:00
|
|
|
rpt1.SetModule(DMRPLUS_MODULE_ID);
|
2017-08-22 14:23:57 -04:00
|
|
|
CCallsign rpt2 = m_ReflectorCallsign;
|
|
|
|
rpt2.SetModule(DmrDstIdToModule(uiDstId));
|
|
|
|
uint32 uiStreamId = IpToStreamId(Ip);
|
|
|
|
|
|
|
|
// and packet
|
|
|
|
*Header = new CDvHeaderPacket(uiSrcId, CCallsign("CQCQCQ"), rpt1, rpt2, uiStreamId, 0, 0);
|
|
|
|
valid = (*Header)->IsValid();
|
|
|
|
if ( !valid )
|
|
|
|
{
|
|
|
|
delete *Header;
|
|
|
|
*Header = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// done
|
|
|
|
return valid;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool CDmrplusProtocol::IsValidDvFramePacket(const CIp &Ip, const CBuffer &Buffer, CDvFramePacket **frames)
|
|
|
|
{
|
|
|
|
bool valid = false;
|
|
|
|
frames[0] = NULL;
|
|
|
|
frames[1] = NULL;
|
|
|
|
frames[2] = NULL;
|
|
|
|
|
|
|
|
uint8 uiPacketType = Buffer.data()[8];
|
|
|
|
if ( (Buffer.size() == 72) && ((uiPacketType == 1) || (uiPacketType == 3)) )
|
|
|
|
{
|
|
|
|
// frame details
|
|
|
|
uint8 uiSlot = (Buffer.data()[16] == 0x22) ? DMR_SLOT2 : DMR_SLOT1;
|
|
|
|
uint8 uiCallType = (Buffer.data()[62] == 1) ? DMR_GROUP_CALL : DMR_PRIVATE_CALL;
|
|
|
|
uint8 uiColourCode = Buffer.data()[20] & 0x0F;
|
|
|
|
if ( (uiSlot == DMRPLUS_REFLECTOR_SLOT) && (uiCallType == DMR_GROUP_CALL) && (uiColourCode == DMRPLUS_REFLECTOR_COLOUR) )
|
|
|
|
{
|
|
|
|
// more frames details
|
|
|
|
//uint8 uiSeqId = Buffer.data()[4];
|
|
|
|
uint8 uiVoiceSeq = (Buffer.data()[18] & 0x0F) - 7; // aka slot type
|
|
|
|
//uint32 uiDstId = *(uint32 *)(&Buffer.data()[64]) & 0x00FFFFFF;
|
|
|
|
//uint32 uiSrcId = *(uint32 *)(&Buffer.data()[68]) & 0x00FFFFFF;
|
|
|
|
|
|
|
|
// crack payload
|
|
|
|
uint8 dmrframe[33];
|
|
|
|
uint8 dmr3ambe[27];
|
|
|
|
uint8 dmrambe[9];
|
|
|
|
uint8 dmrsync[7];
|
|
|
|
// get the 33 bytes ambe
|
|
|
|
memcpy(dmrframe, &(Buffer.data()[26]), 33);
|
|
|
|
// handle endianess
|
|
|
|
SwapEndianess(dmrframe, sizeof(dmrframe));
|
|
|
|
// extract the 3 ambe frames
|
|
|
|
memcpy(dmr3ambe, dmrframe, 14);
|
|
|
|
dmr3ambe[13] &= 0xF0;
|
|
|
|
dmr3ambe[13] |= (dmrframe[19] & 0x0F);
|
2021-03-16 14:34:22 -04:00
|
|
|
memcpy(&dmr3ambe[14], &dmrframe[20], 13);
|
2017-08-22 14:23:57 -04:00
|
|
|
// extract sync
|
|
|
|
dmrsync[0] = dmrframe[13] & 0x0F;
|
|
|
|
::memcpy(&dmrsync[1], &dmrframe[14], 5);
|
|
|
|
dmrsync[6] = dmrframe[19] & 0xF0;
|
|
|
|
|
|
|
|
// and create 3 dv frames
|
|
|
|
uint32 uiStreamId = IpToStreamId(Ip);
|
|
|
|
// frame1
|
|
|
|
memcpy(dmrambe, &dmr3ambe[0], 9);
|
|
|
|
frames[0] = new CDvFramePacket(dmrambe, dmrsync, uiStreamId, uiVoiceSeq, 1);
|
|
|
|
|
|
|
|
// frame2
|
|
|
|
memcpy(dmrambe, &dmr3ambe[9], 9);
|
|
|
|
frames[1] = new CDvFramePacket(dmrambe, dmrsync, uiStreamId, uiVoiceSeq, 2);
|
|
|
|
|
|
|
|
// frame3
|
|
|
|
memcpy(dmrambe, &dmr3ambe[18], 9);
|
|
|
|
if ( uiPacketType == 3 )
|
|
|
|
{
|
|
|
|
frames[2] = new CDvLastFramePacket(dmrambe, dmrsync, uiStreamId, uiVoiceSeq, 3);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
frames[2] = new CDvFramePacket(dmrambe, dmrsync, uiStreamId, uiVoiceSeq, 3);
|
|
|
|
}
|
|
|
|
|
|
|
|
// check
|
|
|
|
valid = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// done
|
|
|
|
return valid;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// packet encoding helpers
|
|
|
|
|
|
|
|
void CDmrplusProtocol::EncodeConnectAckPacket(CBuffer *Buffer)
|
|
|
|
{
|
|
|
|
uint8 tag[] = { 'A','C','K',' ','O','K',0x0A,0x00 };
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
|
|
}
|
|
|
|
|
|
|
|
void CDmrplusProtocol::EncodeConnectNackPacket(CBuffer *Buffer)
|
|
|
|
{
|
|
|
|
uint8 tag[] = { 'N','A','K',' ','O','K',0x0A,0x00 };
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
|
|
}
|
|
|
|
|
|
|
|
bool CDmrplusProtocol::EncodeDvHeaderPacket(const CDvHeaderPacket &Packet, CBuffer *Buffer) const
|
|
|
|
{
|
|
|
|
uint8 tag[] = { 0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x02,
|
|
|
|
0x00,0x05,0x01,0x02,0x00,0x00,0x00 } ;
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
|
|
|
|
|
|
// uiSeqId
|
|
|
|
//Buffer->ReplaceAt(4, 2);
|
|
|
|
// uiPktType
|
|
|
|
//Buffer->ReplaceAt(8, 2);
|
|
|
|
// uiSlot
|
|
|
|
Buffer->Append((uint16)((DMRPLUS_REFLECTOR_SLOT == DMR_SLOT1) ? 0x1111 : 0x2222));
|
|
|
|
// uiSlotType
|
|
|
|
Buffer->Append((uint16)0xEEEE);
|
|
|
|
// uiColourCode
|
|
|
|
uint8 uiColourCode = DMRPLUS_REFLECTOR_COLOUR | (DMRPLUS_REFLECTOR_COLOUR << 4);
|
|
|
|
Buffer->Append((uint8)uiColourCode);
|
|
|
|
Buffer->Append((uint8)uiColourCode);
|
|
|
|
// uiFrameType
|
|
|
|
Buffer->Append((uint16)0x1111);
|
|
|
|
// reserved
|
|
|
|
Buffer->Append((uint16)0x0000);
|
|
|
|
// payload
|
|
|
|
uint32 uiSrcId = Packet.GetMyCallsign().GetDmrid() & 0x00FFFFFF;
|
|
|
|
uint32 uiDstId = ModuleToDmrDestId(Packet.GetRpt2Module()) & 0x00FFFFFF;
|
|
|
|
Buffer->Append((uint8)0x00, 34);
|
|
|
|
Buffer->ReplaceAt(36, HIBYTE(HIWORD(uiSrcId)));
|
|
|
|
Buffer->ReplaceAt(38, LOBYTE(HIWORD(uiSrcId)));
|
|
|
|
Buffer->ReplaceAt(40, HIBYTE(LOWORD(uiSrcId)));
|
|
|
|
Buffer->ReplaceAt(42, LOBYTE(LOWORD(uiSrcId)));
|
|
|
|
|
|
|
|
// reserved
|
|
|
|
Buffer->Append((uint16)0x0000);
|
|
|
|
// uiCallType
|
|
|
|
Buffer->Append((uint8)0x01);
|
|
|
|
// reserved
|
|
|
|
Buffer->Append((uint8)0x00);
|
|
|
|
// uiDstId
|
|
|
|
Buffer->Append(uiDstId);
|
|
|
|
// uiSrcId
|
|
|
|
Buffer->Append(uiSrcId);
|
|
|
|
|
|
|
|
// done
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
void CDmrplusProtocol::EncodeDvPacket
|
|
|
|
(const CDvHeaderPacket &Header,
|
|
|
|
const CDvFramePacket &DvFrame0, const CDvFramePacket &DvFrame1, const CDvFramePacket &DvFrame2,
|
|
|
|
uint8 seqid, CBuffer *Buffer) const
|
|
|
|
{
|
|
|
|
|
|
|
|
uint8 tag[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
|
|
|
|
0x00,0x05,0x01,0x02,0x00,0x00,0x00 } ;
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
|
|
|
|
|
|
// uiSeqId
|
|
|
|
Buffer->ReplaceAt(4, seqid);
|
|
|
|
// uiPktType
|
|
|
|
//Buffer->ReplaceAt(8, 1);
|
|
|
|
// uiSlot
|
|
|
|
Buffer->Append((uint16)((DMRPLUS_REFLECTOR_SLOT == DMR_SLOT1) ? 0x1111 : 0x2222));
|
|
|
|
// uiVoiceSeq
|
|
|
|
uint8 uiVoiceSeq = (DvFrame0.GetDmrPacketId() + 7) | ((DvFrame0.GetDmrPacketId() + 7) << 4);
|
|
|
|
Buffer->Append((uint8)uiVoiceSeq);
|
|
|
|
Buffer->Append((uint8)uiVoiceSeq);
|
|
|
|
// uiColourCode
|
|
|
|
uint8 uiColourCode = DMRPLUS_REFLECTOR_COLOUR | (DMRPLUS_REFLECTOR_COLOUR << 4);
|
|
|
|
Buffer->Append((uint8)uiColourCode);
|
|
|
|
Buffer->Append((uint8)uiColourCode);
|
|
|
|
// uiFrameType
|
|
|
|
Buffer->Append((uint16)0x1111);
|
|
|
|
// reserved
|
|
|
|
Buffer->Append((uint16)0x0000);
|
|
|
|
|
|
|
|
// payload
|
|
|
|
uint32 uiSrcId = Header.GetMyCallsign().GetDmrid() & 0x00FFFFFF;
|
|
|
|
uint32 uiDstId = ModuleToDmrDestId(Header.GetRpt2Module()) & 0x00FFFFFF;
|
|
|
|
// frame0
|
|
|
|
Buffer->ReplaceAt(26, DvFrame0.GetAmbePlus(), 9);
|
|
|
|
// 1/2 frame1
|
|
|
|
Buffer->ReplaceAt(35, DvFrame1.GetAmbePlus(), 5);
|
|
|
|
Buffer->ReplaceAt(39, (uint8)(Buffer->at(39) & 0xF0));
|
|
|
|
// 1/2 frame1
|
|
|
|
Buffer->ReplaceAt(45, DvFrame1.GetAmbePlus()+4, 5);
|
|
|
|
Buffer->ReplaceAt(45, (uint8)(Buffer->at(45) & 0x0F));
|
|
|
|
// frame2
|
|
|
|
Buffer->ReplaceAt(50, DvFrame2.GetAmbePlus(), 9);
|
|
|
|
|
|
|
|
// sync or embedded signaling
|
|
|
|
ReplaceEMBInBuffer(Buffer, DvFrame0.GetDmrPacketId());
|
|
|
|
|
|
|
|
// reserved
|
|
|
|
Buffer->Append((uint16)0x0000);
|
|
|
|
Buffer->Append((uint8)0x00);
|
|
|
|
// uiCallType
|
|
|
|
Buffer->Append((uint8)0x01);
|
|
|
|
// reserved
|
|
|
|
Buffer->Append((uint8)0x00);
|
|
|
|
// uiDstId
|
|
|
|
Buffer->Append(uiDstId);
|
|
|
|
// uiSrcId
|
|
|
|
Buffer->Append(uiSrcId);
|
|
|
|
|
|
|
|
// handle indianess
|
|
|
|
SwapEndianess(&(Buffer->data()[26]), 34);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void CDmrplusProtocol::EncodeDvLastPacket
|
|
|
|
(const CDvHeaderPacket &Header,
|
|
|
|
const CDvFramePacket &DvFrame0, const CDvFramePacket &DvFrame1, const CDvFramePacket &DvFrame2,
|
|
|
|
uint8 seqid, CBuffer *Buffer) const
|
|
|
|
{
|
|
|
|
EncodeDvPacket(Header, DvFrame0, DvFrame1, DvFrame2, seqid, Buffer);
|
|
|
|
Buffer->ReplaceAt(8, (uint8)3);
|
|
|
|
Buffer->ReplaceAt(18, (uint16)0x2222);
|
|
|
|
}
|
|
|
|
|
|
|
|
void CDmrplusProtocol::SwapEndianess(uint8 *buffer, int len) const
|
|
|
|
{
|
|
|
|
for ( int i = 0; i < len; i += 2 )
|
|
|
|
{
|
|
|
|
uint8 t = buffer[i];
|
|
|
|
buffer[i] = buffer[i+1];
|
|
|
|
buffer[i+1] = t;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// SeqId helper
|
|
|
|
|
|
|
|
uint8 CDmrplusProtocol::GetNextSeqId(uint8 uiSeqId) const
|
|
|
|
{
|
|
|
|
return (uiSeqId + 1) & 0xFF;
|
|
|
|
}
|
|
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// DestId to Module helper
|
|
|
|
|
|
|
|
char CDmrplusProtocol::DmrDstIdToModule(uint32 tg) const
|
|
|
|
{
|
|
|
|
// is it a 4xxx ?
|
|
|
|
if ( (tg >= 4001) && (tg <= (4000 + NB_OF_MODULES)) )
|
|
|
|
{
|
|
|
|
return ((char)(tg - 4001) + 'A');
|
|
|
|
}
|
|
|
|
return ' ';
|
|
|
|
}
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|
|
|
|
|
|
|
uint32 CDmrplusProtocol::ModuleToDmrDestId(char m) const
|
|
|
|
{
|
|
|
|
return (uint32)(m - 'A')+4001;
|
|
|
|
}
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|
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// Buffer & LC helpers
|
|
|
|
|
|
|
|
void CDmrplusProtocol::AppendVoiceLCToBuffer(CBuffer *buffer, uint32 uiSrcId) const
|
|
|
|
{
|
|
|
|
uint8 payload[34];
|
|
|
|
|
|
|
|
// fill payload
|
|
|
|
CBPTC19696 bptc;
|
|
|
|
::memset(payload, 0, sizeof(payload));
|
|
|
|
// LC data
|
|
|
|
uint8 lc[12];
|
|
|
|
{
|
|
|
|
::memset(lc, 0, sizeof(lc));
|
|
|
|
// uiDstId = TG9
|
|
|
|
lc[5] = 9;
|
|
|
|
// uiSrcId
|
|
|
|
lc[6] = (uint8)LOBYTE(HIWORD(uiSrcId));
|
|
|
|
lc[7] = (uint8)HIBYTE(LOWORD(uiSrcId));
|
|
|
|
lc[8] = (uint8)LOBYTE(LOWORD(uiSrcId));
|
|
|
|
// parity
|
|
|
|
uint8 parity[4];
|
|
|
|
CRS129::encode(lc, 9, parity);
|
|
|
|
lc[9] = parity[2] ^ DMR_VOICE_LC_HEADER_CRC_MASK;
|
|
|
|
lc[10] = parity[1] ^ DMR_VOICE_LC_HEADER_CRC_MASK;
|
|
|
|
lc[11] = parity[0] ^ DMR_VOICE_LC_HEADER_CRC_MASK;
|
|
|
|
}
|
|
|
|
// sync
|
|
|
|
::memcpy(payload+13, g_DmrSyncBSData, sizeof(g_DmrSyncBSData));
|
|
|
|
// slot type
|
|
|
|
{
|
|
|
|
// slot type
|
|
|
|
uint8 slottype[3];
|
|
|
|
::memset(slottype, 0, sizeof(slottype));
|
|
|
|
slottype[0] = (DMRPLUS_REFLECTOR_COLOUR << 4) & 0xF0;
|
|
|
|
slottype[0] |= (DMR_DT_VOICE_LC_HEADER << 0) & 0x0FU;
|
|
|
|
CGolay2087::encode(slottype);
|
|
|
|
payload[12U] = (payload[12U] & 0xC0U) | ((slottype[0U] >> 2) & 0x3FU);
|
|
|
|
payload[13U] = (payload[13U] & 0x0FU) | ((slottype[0U] << 6) & 0xC0U) | ((slottype[1U] >> 2) & 0x30U);
|
|
|
|
payload[19U] = (payload[19U] & 0xF0U) | ((slottype[1U] >> 2) & 0x0FU);
|
|
|
|
payload[20U] = (payload[20U] & 0x03U) | ((slottype[1U] << 6) & 0xC0U) | ((slottype[2U] >> 2) & 0x3CU);
|
|
|
|
|
|
|
|
}
|
|
|
|
// and encode
|
|
|
|
bptc.encode(lc, payload);
|
|
|
|
|
|
|
|
// and append
|
|
|
|
buffer->Append(payload, sizeof(payload));
|
|
|
|
}
|
|
|
|
|
|
|
|
void CDmrplusProtocol::ReplaceEMBInBuffer(CBuffer *buffer, uint8 uiDmrPacketId) const
|
|
|
|
{
|
|
|
|
// voice packet A ?
|
|
|
|
if ( uiDmrPacketId == 0 )
|
|
|
|
{
|
|
|
|
// sync
|
|
|
|
buffer->ReplaceAt(39, (uint8)(buffer->at(39) | (g_DmrSyncBSVoice[0] & 0x0F)));
|
|
|
|
buffer->ReplaceAt(40, g_DmrSyncBSVoice+1, 5);
|
|
|
|
buffer->ReplaceAt(45, (uint8)(buffer->at(45) | (g_DmrSyncBSVoice[6] & 0xF0)));
|
|
|
|
}
|
|
|
|
// voice packet B,C,D,E ?
|
|
|
|
else if ( (uiDmrPacketId >= 1) && (uiDmrPacketId <= 4 ) )
|
|
|
|
{
|
|
|
|
// EMB LC
|
|
|
|
uint8 emb[2];
|
|
|
|
emb[0] = (DMRMMDVM_REFLECTOR_COLOUR << 4) & 0xF0;
|
|
|
|
//emb[0] |= PI ? 0x08U : 0x00;
|
|
|
|
//emb[0] |= (LCSS << 1) & 0x06;
|
|
|
|
emb[1] = 0x00;
|
|
|
|
// encode
|
|
|
|
CQR1676::encode(emb);
|
|
|
|
// and append
|
|
|
|
buffer->ReplaceAt(39, (uint8)((buffer->at(39) & 0xF0) | ((emb[0U] >> 4) & 0x0F)));
|
|
|
|
buffer->ReplaceAt(40, (uint8)((buffer->at(40) & 0x0F) | ((emb[0U] << 4) & 0xF0)));
|
|
|
|
buffer->ReplaceAt(40, (uint8)(buffer->at(40) & 0xF0));
|
|
|
|
buffer->ReplaceAt(41, (uint8)0);
|
|
|
|
buffer->ReplaceAt(42, (uint8)0);
|
|
|
|
buffer->ReplaceAt(43, (uint8)0);
|
|
|
|
buffer->ReplaceAt(44, (uint8)(buffer->at(44) & 0x0F));
|
|
|
|
buffer->ReplaceAt(44, (uint8)((buffer->at(44) & 0xF0) | ((emb[1U] >> 4) & 0x0F)));
|
|
|
|
buffer->ReplaceAt(45, (uint8)((buffer->at(45) & 0x0F) | ((emb[1U] << 4) & 0xF0)));
|
|
|
|
}
|
|
|
|
// voice packet F
|
|
|
|
else
|
|
|
|
{
|
|
|
|
// NULL
|
|
|
|
uint8 emb[2];
|
|
|
|
emb[0] = (DMRMMDVM_REFLECTOR_COLOUR << 4) & 0xF0;
|
|
|
|
//emb[0] |= PI ? 0x08U : 0x00;
|
|
|
|
//emb[0] |= (LCSS << 1) & 0x06;
|
|
|
|
emb[1] = 0x00;
|
|
|
|
// encode
|
|
|
|
CQR1676::encode(emb);
|
|
|
|
// and append
|
|
|
|
buffer->ReplaceAt(39, (uint8)((buffer->at(39) & 0xF0) | ((emb[0U] >> 4) & 0x0F)));
|
|
|
|
buffer->ReplaceAt(40, (uint8)((buffer->at(40) & 0x0F) | ((emb[0U] << 4) & 0xF0)));
|
|
|
|
buffer->ReplaceAt(40, (uint8)(buffer->at(40) & 0xF0));
|
|
|
|
buffer->ReplaceAt(41, (uint8)0);
|
|
|
|
buffer->ReplaceAt(42, (uint8)0);
|
|
|
|
buffer->ReplaceAt(43, (uint8)0);
|
|
|
|
buffer->ReplaceAt(44, (uint8)(buffer->at(44) & 0x0F));
|
|
|
|
buffer->ReplaceAt(44, (uint8)((buffer->at(44) & 0xF0) | ((emb[1U] >> 4) & 0x0F)));
|
|
|
|
buffer->ReplaceAt(45, (uint8)((buffer->at(45) & 0x0F) | ((emb[1U] << 4) & 0xF0)));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// uiStreamId helpers
|
|
|
|
|
|
|
|
|
|
|
|
// uiStreamId helpers
|
|
|
|
uint32 CDmrplusProtocol::IpToStreamId(const CIp &ip) const
|
|
|
|
{
|
|
|
|
return ip.GetAddr() ^ (uint32)(MAKEDWORD(ip.GetPort(), ip.GetPort()));
|
|
|
|
}
|