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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
TCP output
*/
/*
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 <cstring>
#include <cstdio>
#include <signal.h>
#include <limits.h>
#include "dabOutput.h"
#include <unistd.h>
#include <sys/time.h>
#include <list>
#include <vector>
#include <atomic>
#include <thread>
#include "ThreadsafeQueue.h"
using namespace std;
using vec_u8 = std::vector<uint8_t>;
// In ETI one element would be an ETI frame of 6144 bytes.
// 250 frames correspond to 6 seconds. This is mostly here
// to ensure we do not accumulate data for faulty sockets, delay
// management has to be done on the receiver end.
const size_t MAX_QUEUED_ETI_FRAMES = 250;
static bool parse_uri(const char *uri, long *port, string& addr)
{
char* const hostport = strdup(uri); // the uri is actually an tuple host:port
char* address;
address = strchr((char*)hostport, ':');
if (address == NULL) {
etiLog.log(error,
"\"%s\" is an invalid format for tcp address: "
"should be [address]:port - > aborting\n",
hostport);
goto tcp_open_fail;
}
// terminate string hostport after the host, and advance address to the port number
*(address++) = 0;
*port = strtol(address, (char **)NULL, 10);
if ((*port == LONG_MIN) || (*port == LONG_MAX)) {
etiLog.log(error,
"can't convert port number in tcp address %s\n", address);
goto tcp_open_fail;
}
if (*port == 0) {
etiLog.log(error,
"can't use port number 0 in tcp address\n");
goto tcp_open_fail;
}
addr = hostport;
free(hostport);
return true;
tcp_open_fail:
free(hostport);
return false;
}
int DabOutputTcp::Open(const char* name)
{
long port = 0;
string address;
bool success = parse_uri(name, &port, address);
uri_ = name;
if (success) {
dispatcher_ = make_shared<Socket::TCPDataDispatcher>(MAX_QUEUED_ETI_FRAMES);
dispatcher_->start(port, address);
}
else {
throw runtime_error(string("Could not parse TCP output address ") + name);
}
return 0;
}
int DabOutputTcp::Write(void* buffer, int size)
{
vec_u8 data(6144);
uint8_t* buffer_u8 = (uint8_t*)buffer;
std::copy(buffer_u8, buffer_u8 + size, data.begin());
// Pad to 6144 bytes
std::fill(data.begin() + size, data.end(), 0x55);
dispatcher_->write(data);
return size;
}
int DabOutputTcp::Close()
{
return 0;
}
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