1 files changed, 449 insertions, 0 deletions
diff --git a/lib/edi/TagItems.cpp b/lib/edi/TagItems.cpp
new file mode 100644
index 0000000..9746469
--- /dev/null
+++ b/lib/edi/TagItems.cpp
@@ -0,0 +1,449 @@
+/*
+   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 the ODR-mmbTools.
+
+   This program 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.
+
+   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+#include "TagItems.h"
+#include <vector>
+#include <iostream>
+#include <string>
+#include <cstdint>
+#include <stdexcept>
+
+namespace edi {
+
+TagStarPTR::TagStarPTR(const std::string& protocol)
+    : m_protocol(protocol)
+{
+    if (m_protocol.size() != 4) {
+        throw std::runtime_error("TagStarPTR protocol invalid length");
+    }
+}
+
+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);
+
+    packet.insert(packet.end(), m_protocol.begin(), m_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> TagDETI::Assemble()
+{
+    std::string pack_data("deti");
+    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 fct  = dlfc % 250;
+    uint8_t fcth = dlfc / 250;
+
+
+    uint16_t detiHeader = fct | (fcth << 8) | (rfudf << 13) | (ficf << 14) | (atstf << 15);
+    packet.push_back(detiHeader >> 8);
+    packet.push_back(detiHeader & 0xFF);
+
+    uint32_t etiHeader = mnsc | (rfu << 16) | (rfa << 17) |
+                        (fp << 19) | (mid << 22) | (stat << 24);
+    packet.push_back((etiHeader >> 24) & 0xFF);
+    packet.push_back((etiHeader >> 16) & 0xFF);
+    packet.push_back((etiHeader >> 8) & 0xFF);
+    packet.push_back(etiHeader & 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 (ficf) {
+        for (size_t i = 0; i < fic_length; i++) {
+            packet.push_back(fic_data[i]);
+        }
+    }
+
+    if (rfudf) {
+        packet.push_back((rfud >> 16) & 0xFF);
+        packet.push_back((rfud >> 8) & 0xFF);
+        packet.push_back(rfud & 0xFF);
+    }
+
+    // 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;
+
+    dlfc = (dlfc+1) % 5000;
+
+    /*
+    std::cerr << "TagItem deti, packet.size " << packet.size() << std::endl;
+    std::cerr << "              fic length " << fic_length << std::endl;
+    std::cerr << "              length " << taglength / 8 << std::endl;
+    */
+    return packet;
+}
+
+void TagDETI::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> TagESTn::Assemble()
+{
+    std::string pack_data("est");
+    std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
+    packet.reserve(mst_length*8 + 16);
+
+    packet.push_back(id);
+
+    // Placeholder for length
+    packet.push_back(0);
+    packet.push_back(0);
+    packet.push_back(0);
+    packet.push_back(0);
+
+    if (tpl > 0x3F) {
+        throw std::runtime_error("TagESTn: invalid TPL value");
+    }
+
+    if (sad > 0x3FF) {
+        throw std::runtime_error("TagESTn: invalid SAD value");
+    }
+
+    if (scid > 0x3F) {
+        throw std::runtime_error("TagESTn: invalid SCID value");
+    }
+
+    uint32_t sstc = (scid << 18) | (sad << 8) | (tpl << 2) | rfa;
+    packet.push_back((sstc >> 16) & 0xFF);
+    packet.push_back((sstc >> 8) & 0xFF);
+    packet.push_back(sstc & 0xFF);
+
+    for (size_t i = 0; i < mst_length * 8; i++) {
+        packet.push_back(mst_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 ESTn, length " << packet.size() << std::endl;
+    std::cerr << "              mst_length " << mst_length << std::endl;
+    */
+    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;
+}
+
+#if 0
+/* Update the EDI time. t is in UTC, TAI offset is requested from adjtimex */
+void TagDSTI::set_edi_time(const std::time_t t)
+{
+    if (tai_offset_cache_updated_at == 0 or tai_offset_cache_updated_at + 3600 < t) {
+        struct timex timex_request;
+        timex_request.modes = 0;
+
+        int err = adjtimex(&timex_request);
+        if (err == -1) {
+            throw std::runtime_error("adjtimex failed");
+        }
+
+        if (timex_request.tai == 0) {
+            throw std::runtime_error("CLOCK_TAI is not properly set up");
+        }
+        tai_offset_cache = timex_request.tai;
+        tai_offset_cache_updated_at = t;
+
+        fprintf(stderr, "adjtimex: %d, tai %d\n", err, timex_request.tai);
+    }
+
+    utco = tai_offset_cache - 32;
+
+    const std::time_t posix_timestamp_1_jan_2000 = 946684800;
+
+    seconds = t - posix_timestamp_1_jan_2000 + utco;
+}
+#endif
+
+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;
+}
+
+TagODRVersion::TagODRVersion(const std::string& version, uint32_t uptime_s) :
+    m_version(version),
+    m_uptime(uptime_s)
+{
+}
+
+std::vector<uint8_t> TagODRVersion::Assemble()
+{
+    std::string pack_data("ODRv");
+    std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
+
+    const size_t length = m_version.size() + sizeof(uint32_t);
+
+    packet.resize(4 + 4 + length);
+
+    const uint32_t length_bits = length * 8;
+
+    size_t i = 4;
+    packet[i++] = (length_bits >> 24) & 0xFF;
+    packet[i++] = (length_bits >> 16) & 0xFF;
+    packet[i++] = (length_bits >> 8) & 0xFF;
+    packet[i++] = length_bits & 0xFF;
+
+    copy(m_version.cbegin(), m_version.cend(), packet.begin() + i);
+    i += m_version.size();
+
+    packet[i++] = (m_uptime >> 24) & 0xFF;
+    packet[i++] = (m_uptime >> 16) & 0xFF;
+    packet[i++] = (m_uptime >> 8) & 0xFF;
+    packet[i++] = m_uptime & 0xFF;
+
+    return packet;
+}
+
+TagODRAudioLevels::TagODRAudioLevels(int16_t audiolevel_left, int16_t audiolevel_right) :
+    m_audio_left(audiolevel_left),
+    m_audio_right(audiolevel_right)
+{
+}
+
+std::vector<uint8_t> TagODRAudioLevels::Assemble()
+{
+    std::string pack_data("ODRa");
+    std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
+
+    constexpr size_t length = 2*sizeof(int16_t);
+
+    packet.resize(4 + 4 + length);
+
+    const uint32_t length_bits = length * 8;
+
+    size_t i = 4;
+    packet[i++] = (length_bits >> 24) & 0xFF;
+    packet[i++] = (length_bits >> 16) & 0xFF;
+    packet[i++] = (length_bits >> 8) & 0xFF;
+    packet[i++] = length_bits & 0xFF;
+
+    packet[i++] = (m_audio_left >> 8) & 0xFF;
+    packet[i++] = m_audio_left & 0xFF;
+
+    packet[i++] = (m_audio_right >> 8) & 0xFF;
+    packet[i++] = m_audio_right & 0xFF;
+
+    return packet;
+}
+
+}
+