Add AFPacket and a few TagItems

4 files changed, 353 insertions, 0 deletions

diff --git a/src/dabOutput/edi/AFPacket.cpp b/src/dabOutput/edi/AFPacket.cpp
new file mode 100644
index 0000000..f690b92
--- /dev/null
+++ b/src/dabOutput/edi/AFPacket.cpp
@@ -0,0 +1,45 @@
+/*
+   Copyright (C) 2013 Matthias P. Braendli
+   http://mpb.li
+
+   EDI output.
+    This implements an AF Packet as defined ETSI TS 102 821.
+    Also see 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/>.
+   */
+#include "config.h"
+#include "AFPacket.h"
+#include <vector>
+#include <string>
+#include <stdint.h>
+
+std::vector<uint8_t> AFPacket::Assemble()
+{
+    header.sync = 'A' << 8 | 'F';
+    header.seq = 0;
+    header.ar_cf = 0;
+    header.ar_maj = 1;
+    header.ar_min = 0;
+    header.pt = 'T';
+
+    std::string pack_data("Nothingyetpleasecomelater");
+    std::vector<uint8_t> packet(pack_data.begin(), pack_data.end());
+    return packet;
+}
+
diff --git a/src/dabOutput/edi/AFPacket.h b/src/dabOutput/edi/AFPacket.h
new file mode 100644
index 0000000..c4f33bf
--- /dev/null
+++ b/src/dabOutput/edi/AFPacket.h
@@ -0,0 +1,60 @@
+/*
+   Copyright (C) 2013 Matthias P. Braendli
+   http://mpb.li
+
+   EDI output.
+    This implements an AF Packet as defined ETSI TS 102 821.
+    Also see 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 <vector>
+#include <stdint.h>
+#define PACKED __attribute__ ((packed))
+
+// ETSI TS 102 821, 6.1 AF packet structure
+struct AFHeader
+{
+    uint16_t sync;
+    uint32_t len;
+    uint16_t seq;
+    uint8_t  ar_cf:1;
+    uint8_t  ar_maj:3;
+    uint8_t  ar_min:4;
+    uint8_t  pt;
+} PACKED;
+
+class AFPacket
+{
+    public:
+        AFPacket();
+
+        std::vector<uint8_t> Assemble();
+
+    private:
+        AFHeader header;
+        std::vector<uint8_t> packet_;
+};
+
+#endif
+
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
+
diff --git a/src/dabOutput/edi/TagItems.h b/src/dabOutput/edi/TagItems.h
new file mode 100644
index 0000000..c0e863a
--- /dev/null
+++ b/src/dabOutput/edi/TagItems.h
@@ -0,0 +1,116 @@
+/*
+   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 _TAGITEMS_H_
+#define _TAGITEMS_H_
+
+#include "config.h"
+#include "Eti.h"
+#include <vector>
+#include <string>
+#include <stdint.h>
+#define PACKED __attribute__ ((packed))
+
+class TagItem
+{
+    public:
+        virtual std::vector<uint8_t> Assemble() = 0;
+};
+
+// ETSI TS 102 693, 5.1.1 Protocol type and revision
+class TagStarPTR : public TagItem
+{
+    public:
+        std::vector<uint8_t> Assemble();
+};
+
+// ETSI TS 102 693, 5.1.3 DAB ETI(LI) Management (deti)
+class TagDETI : public TagItem
+{
+    public:
+        TagDETI()
+        {
+            // set optional fields to "not present"
+            atstf = 0;
+            rfudf = 0;
+            ficf = 0;
+
+            dflc = 0; // counter
+        }
+        std::vector<uint8_t> Assemble();
+
+        /***** DATA in intermediary format ****/
+        // For the ETI Header: must be defined !
+        uint8_t stat;
+        uint8_t mid;
+        uint8_t fp;
+        uint8_t rfa;
+        uint8_t rfu;
+        uint8_t mnsc;
+
+        // ATST (optional)
+        bool atstf; // presence of atst data
+        uint8_t utco;
+        uint32_t seconds;
+        uint32_t tsta;
+
+        // the FIC (optional)
+        bool ficf;
+        const char* fic_data;
+        size_t fic_length;
+
+        // rfu
+        bool rfudf;
+        uint32_t rfud;
+
+    private:
+        uint32_t dflc; //modulo 5000 counter for each eti frame
+
+};
+
+// ETSI TS 102 693, 5.1.5 ETI Sub-Channel Stream <n>
+class TagESTn : public TagItem
+{
+    public:
+        TagESTn(uint8_t id) : id_(id) {} ;
+
+        std::vector<uint8_t> Assemble();
+
+        // SSTCn
+        uint8_t scid;
+        uint8_t sad;
+        uint8_t tpl;
+        uint8_t rfa;
+
+        // Pointer to MSTn data
+        uint8_t* mst_data;
+        size_t mst_length; // STLn * 8 bytes
+
+    private:
+        uint8_t id_;
+};
+#endif
+