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162 lines
3.5 KiB
162 lines
3.5 KiB
/*
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* Copyright (C) 2011-2014 by Jonathan Naylor G4KLX
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* Copyright (c) 2017 by Thomas A. Early N7TAE
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* Copyright (c) 2021 by Geoffrey Merck F4FXL / KC3FRA
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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 <cassert>
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#include "DStarDefines.h"
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#include "EchoUnit.h"
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#include "Defs.h"
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#include "Utils.h"
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const unsigned int MAX_FRAMES = 60U * DSTAR_FRAMES_PER_SEC;
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CEchoUnit::CEchoUnit(IRepeaterCallback* handler, const std::string& callsign) :
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m_handler(handler),
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m_callsign(callsign),
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m_status(ES_IDLE),
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m_timer(1000U, REPLY_TIME),
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m_header(NULL),
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m_data(NULL),
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m_in(0U),
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m_out(0U),
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m_time()
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{
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assert(handler != NULL);
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m_data = new CAMBEData*[MAX_FRAMES];
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for (unsigned int i = 0U; i < MAX_FRAMES; i++)
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m_data[i] = NULL;
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}
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CEchoUnit::~CEchoUnit()
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{
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delete[] m_data;
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}
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void CEchoUnit::writeHeader(const CHeaderData& header)
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{
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if (m_status != ES_IDLE)
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return;
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m_header = new CHeaderData(header);
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m_in = 0U;
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m_status = ES_RECEIVE;
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}
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void CEchoUnit::writeData(const CAMBEData& data)
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{
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if (m_status != ES_RECEIVE)
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return;
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if (m_in < MAX_FRAMES) {
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m_data[m_in] = new CAMBEData(data);
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m_in++;
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}
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if (data.isEnd()) {
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printf("Received %.1f secs of audio from %s for echoing\n", float(m_in) / float(DSTAR_FRAMES_PER_SEC), m_header->getMyCall1().c_str());
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m_timer.start();
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m_status = ES_WAIT;
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}
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}
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void CEchoUnit::end()
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{
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if (m_status != ES_RECEIVE)
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return;
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printf("Received %.1f secs of audio from %s for echoing\n", float(m_in) / float(DSTAR_FRAMES_PER_SEC), m_header->getMyCall1().c_str());
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m_timer.start();
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m_status = ES_WAIT;
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}
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void CEchoUnit::clock(unsigned int ms)
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{
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m_timer.clock(ms);
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if (m_status == ES_WAIT && m_timer.hasExpired()) {
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m_timer.stop();
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// RPT1 and RPT2 will be filled in later
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m_header->setMyCall1(m_callsign);
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m_header->setMyCall2("ECHO");
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m_header->setYourCall("CQCQCQ ");
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m_handler->process(*m_header, DIR_INCOMING, AS_ECHO);
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delete m_header;
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m_out = 0U;
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m_status = ES_TRANSMIT;
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m_time = std::chrono::high_resolution_clock::now();
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return;
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}
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if (m_status == ES_TRANSMIT) {
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auto now = std::chrono::high_resolution_clock::now();
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auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - m_time);
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unsigned int needed = elapsed.count() / DSTAR_FRAME_TIME_MS;
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while (m_out < needed) {
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CAMBEData* data = m_data[m_out];
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m_data[m_out] = NULL;
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m_out++;
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if (m_in == m_out)
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data->setEnd(true);
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m_handler->process(*data, DIR_INCOMING, AS_ECHO);
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delete data;
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if (m_in == m_out) {
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m_in = 0U;
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m_out = 0U;
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m_status = ES_IDLE;
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return;
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}
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}
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return;
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}
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}
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void CEchoUnit::cancel()
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{
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for (unsigned int i = 0U; i < MAX_FRAMES; i++) {
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if (m_data[i] != NULL) {
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delete m_data[i];
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m_data[i] = NULL;
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}
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}
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m_status = ES_IDLE;
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m_out = 0U;
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m_in = 0U;
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m_timer.stop();
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}
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