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/*
Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Her Majesty the Queen in
Right of Canada (Communications Research Center Canada)
Copyright (C) 2018
Matthias P. Braendli, matthias.braendli@mpb.li
http://www.opendigitalradio.org
SIMUL throttling output. It guarantees correct frame generation rate
*/
/*
This file is part of ODR-DabMux.
ODR-DabMux is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
ODR-DabMux is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with ODR-DabMux. If not, see <http://www.gnu.org/licenses/>.
*/
#include "dabOutput.h"
#include <cstring>
#include <cstdio>
#include <fcntl.h>
#include <limits.h>
#include <chrono>
#include <thread>
int DabOutputSimul::Open(const char* name)
{
startTime_ = std::chrono::steady_clock::now();
return 0;
}
int DabOutputSimul::Write(void* buffer, int size)
{
auto curTime = std::chrono::steady_clock::now();
const auto frameinterval = std::chrono::milliseconds(24);
auto diff = curTime - startTime_;
auto waiting = frameinterval - diff;
if (diff < frameinterval) {
std::this_thread::sleep_for(waiting);
}
startTime_ += frameinterval;
return size;
}
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