From 05da854addac962e20ff9f1e7bdad3cbacb66905 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Fri, 22 Nov 2013 19:12:30 +0100
Subject: Add AFPacket and a few TagItems

---
 src/dabOutput/edi/TagItems.cpp | 132 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 src/dabOutput/edi/TagItems.cpp

(limited to 'src/dabOutput/edi/TagItems.cpp')

diff --git a/src/dabOutput/edi/TagItems.cpp b/src/dabOutput/edi/TagItems.cpp
new file mode 100644
index 0000000..b83c1bf
--- /dev/null
+++ b/src/dabOutput/edi/TagItems.cpp
@@ -0,0 +1,132 @@
+/*
+   Copyright (C) 2013 Matthias P. Braendli
+   http://mpb.li
+
+   EDI output.
+    This defines a few TAG items as defined ETSI TS 102 821 and
+    ETSI TS 102 693
+
+   */
+/*
+   This file is part of CRC-DabMux.
+
+   CRC-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.
+
+   CRC-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 CRC-DabMux.  If not, see <http://www.gnu.org/licenses/>.
+   */
+
+#ifndef _AFPACKET_H_
+#define _AFPACKET_H_
+
+#include "config.h"
+#include "TagItems.h"
+#include <vector>
+#include <string>
+#include <stdint.h>
+
+std::vector<uint8_t> TagStarPTR::Assemble()
+{
+    std::string pack_data("*ptr\0\0\0\100DETI");
+    std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
+    return packet;
+}
+
+std::vector<uint8_t> TagDETI::Assemble()
+{
+    std::string pack_data("deti\0\0\0\0");
+    std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
+    packet.reserve(256);
+
+    uint16_t detiHeader = dflc | (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;
+
+    dflc = (dflc+1) % 5000;
+
+    return packet;
+}
+
+
+std::vector<uint8_t> TagESTn::Assemble()
+{
+    std::string pack_data("estN\0\0\0\0");
+    std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
+
+    packet[3] = id_; // replace the N in estN above
+
+    packet.reserve(mst_length*8 + 16);
+
+    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; 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;
+
+    return packet;
+}
+#endif
+
-- 
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