140 lines
3.0 KiB
C++
140 lines
3.0 KiB
C++
/*
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* Copyright (C) 2016,2018,2020 by Jonathan Naylor G4KLX
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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 "NXDNNetwork.h"
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#include "NXDNParrot.h"
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#include "StopWatch.h"
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#include "Version.h"
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#include "Parrot.h"
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#include "Thread.h"
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#include "Timer.h"
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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int main(int argc, char** argv)
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{
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if (argc == 1) {
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::fprintf(stderr, "Usage: NXDNParrot <port>\n");
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return 1;
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}
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unsigned short port = (unsigned short)::atoi(argv[1U]);
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if (port == 0U) {
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::fprintf(stderr, "NXDNParrot: invalid port number - %s\n", argv[1U]);
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return 1;
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}
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CNXDNParrot parrot(port);
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parrot.run();
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return 0;
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}
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CNXDNParrot::CNXDNParrot(unsigned short port) :
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m_port(port)
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{
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CUDPSocket::startup();
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}
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CNXDNParrot::~CNXDNParrot()
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{
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CUDPSocket::shutdown();
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}
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void CNXDNParrot::run()
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{
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CParrot parrot(180U);
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CNXDNNetwork network(m_port);
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bool ret = network.open();
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if (!ret)
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return;
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CStopWatch stopWatch;
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stopWatch.start();
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CTimer watchdogTimer(1000U, 0U, 1500U);
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CTimer turnaroundTimer(1000U, 2U);
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CStopWatch playoutTimer;
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unsigned int count = 0U;
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bool playing = false;
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::fprintf(stdout, "Starting NXDNParrot-%s\n", VERSION);
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for (;;) {
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unsigned char buffer[200U];
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unsigned int len = network.read(buffer, 200U);
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if (len > 0U) {
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parrot.write(buffer, len);
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watchdogTimer.start();
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if ((buffer[9U] & 0x08U) == 0x08U) {
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::fprintf(stdout, "Received end of transmission\n");
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turnaroundTimer.start();
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watchdogTimer.stop();
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parrot.end();
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}
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}
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if (turnaroundTimer.isRunning() && turnaroundTimer.hasExpired()) {
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if (!playing) {
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playoutTimer.start();
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playing = true;
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count = 0U;
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}
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// A frame every 80ms
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unsigned int wanted = playoutTimer.elapsed() / 80U;
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while (count < wanted) {
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len = parrot.read(buffer);
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if (len > 0U) {
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network.write(buffer, len);
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count++;
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} else {
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parrot.clear();
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network.end();
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turnaroundTimer.stop();
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playing = false;
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count = wanted;
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}
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}
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}
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unsigned int ms = stopWatch.elapsed();
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stopWatch.start();
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watchdogTimer.clock(ms);
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turnaroundTimer.clock(ms);
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if (watchdogTimer.isRunning() && watchdogTimer.hasExpired()) {
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turnaroundTimer.start();
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watchdogTimer.stop();
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parrot.end();
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}
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if (ms < 5U)
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CThread::sleep(5U);
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}
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network.close();
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}
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