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/*
EDI output.
This defines a few TAG items as defined ETSI TS 102 821 and
ETSI TS 102 693
Copyright (C) 2019
Matthias P. Braendli, matthias.braendli@mpb.li
http://www.opendigitalradio.org
*/
/*
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 "config.h"
#include "edi/TagItems.h"
#include <vector>
#include <iostream>
#include <string>
#include <stdint.h>
#include <stdexcept>
namespace edi {
std::vector<uint8_t> TagStarPTR::Assemble()
{
//std::cerr << "TagItem *ptr" << std::endl;
std::string pack_data("*ptr");
std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
packet.push_back(0);
packet.push_back(0);
packet.push_back(0);
packet.push_back(0x40);
if (protocol.size() != 4) {
throw std::runtime_error("TagStarPTR protocol invalid length");
}
packet.insert(packet.end(), protocol.begin(), protocol.end());
// Major
packet.push_back(0);
packet.push_back(0);
// Minor
packet.push_back(0);
packet.push_back(0);
return packet;
}
std::vector<uint8_t> TagDSTI::Assemble()
{
std::string pack_data("dsti");
std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
packet.reserve(256);
// Placeholder for length
packet.push_back(0);
packet.push_back(0);
packet.push_back(0);
packet.push_back(0);
uint8_t dfctl = dflc % 250;
uint8_t dfcth = dflc / 250;
uint16_t dstiHeader = dfctl | (dfcth << 8) | (rfadf << 13) | (atstf << 14) | (stihf << 15);
packet.push_back(dstiHeader >> 8);
packet.push_back(dstiHeader & 0xFF);
if (stihf) {
packet.push_back(stat);
packet.push_back((spid >> 8) & 0xFF);
packet.push_back(spid & 0xFF);
}
if (atstf) {
packet.push_back(utco);
packet.push_back((seconds >> 24) & 0xFF);
packet.push_back((seconds >> 16) & 0xFF);
packet.push_back((seconds >> 8) & 0xFF);
packet.push_back(seconds & 0xFF);
packet.push_back((tsta >> 16) & 0xFF);
packet.push_back((tsta >> 8) & 0xFF);
packet.push_back(tsta & 0xFF);
}
if (rfadf) {
for (size_t i = 0; i < rfad.size(); i++) {
packet.push_back(rfad[i]);
}
}
// calculate and update size
// remove TAG name and TAG length fields and convert to bits
uint32_t taglength = (packet.size() - 8) * 8;
// write length into packet
packet[4] = (taglength >> 24) & 0xFF;
packet[5] = (taglength >> 16) & 0xFF;
packet[6] = (taglength >> 8) & 0xFF;
packet[7] = taglength & 0xFF;
dflc = (dflc+1) % 5000;
/*
std::cerr << "TagItem dsti, packet.size " << packet.size() << std::endl;
std::cerr << " length " << taglength / 8 << std::endl;
*/
return packet;
}
void TagDSTI::set_edi_time(const std::time_t t, int tai_utc_offset)
{
utco = tai_utc_offset - 32;
const std::time_t posix_timestamp_1_jan_2000 = 946684800;
seconds = t - posix_timestamp_1_jan_2000 + utco;
}
std::vector<uint8_t> TagSSm::Assemble()
{
std::string pack_data("ss");
std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
packet.reserve(istd_length + 16);
packet.push_back((id >> 8) & 0xFF);
packet.push_back(id & 0xFF);
// Placeholder for length
packet.push_back(0);
packet.push_back(0);
packet.push_back(0);
packet.push_back(0);
if (rfa > 0x1F) {
throw std::runtime_error("TagSSm: invalid RFA value");
}
if (tid > 0x7) {
throw std::runtime_error("TagSSm: invalid tid value");
}
if (tidext > 0x7) {
throw std::runtime_error("TagSSm: invalid tidext value");
}
if (stid > 0x0FFF) {
throw std::runtime_error("TagSSm: invalid stid value");
}
uint32_t istc = (rfa << 19) | (tid << 16) | (tidext << 13) | ((crcstf ? 1 : 0) << 12) | stid;
packet.push_back((istc >> 16) & 0xFF);
packet.push_back((istc >> 8) & 0xFF);
packet.push_back(istc & 0xFF);
for (size_t i = 0; i < istd_length; i++) {
packet.push_back(istd_data[i]);
}
// calculate and update size
// remove TAG name and TAG length fields and convert to bits
uint32_t taglength = (packet.size() - 8) * 8;
// write length into packet
packet[4] = (taglength >> 24) & 0xFF;
packet[5] = (taglength >> 16) & 0xFF;
packet[6] = (taglength >> 8) & 0xFF;
packet[7] = taglength & 0xFF;
/*
std::cerr << "TagItem SSm, length " << packet.size() << std::endl;
std::cerr << " istd_length " << istd_length << std::endl;
*/
return packet;
}
std::vector<uint8_t> TagStarDMY::Assemble()
{
std::string pack_data("*dmy");
std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
packet.resize(4 + 4 + length_);
const uint32_t length_bits = length_ * 8;
packet[4] = (length_bits >> 24) & 0xFF;
packet[5] = (length_bits >> 16) & 0xFF;
packet[6] = (length_bits >> 8) & 0xFF;
packet[7] = length_bits & 0xFF;
// The remaining bytes in the packet are "undefined data"
return packet;
}
}
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