Add FIG0/21 work in progress

1 files changed, 146 insertions, 0 deletions

diff --git a/src/fig/FIG0_21.cpp b/src/fig/FIG0_21.cpp
new file mode 100644
index 0000000..a89a8a7
--- /dev/null
+++ b/src/fig/FIG0_21.cpp
@@ -0,0 +1,146 @@
+/*
+   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+   2011, 2012 Her Majesty the Queen in Right of Canada (Communications
+   Research Center Canada)
+
+   Copyright (C) 2017
+   Matthias P. Braendli, matthias.braendli@mpb.li
+   */
+/*
+   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 "fig/FIG0_21.h"
+#include "utils.h"
+
+namespace FIC {
+
+FIG0_21::FIG0_21(FIGRuntimeInformation *rti) :
+    m_rti(rti),
+    m_initialised(false)
+{
+}
+
+FillStatus FIG0_21::fill(uint8_t *buf, size_t max_size)
+{
+    FillStatus fs;
+    ssize_t remaining = max_size;
+    auto ensemble = m_rti->ensemble;
+
+    if (not m_initialised) {
+        freqListEntryFIG0_21 = ensemble->frequency_information.begin();
+        m_initialised = true;
+    }
+
+    FIGtype0* fig0 = nullptr;
+
+    for (; freqListEntryFIG0_21 != ensemble->frequency_information.end();
+            ++freqListEntryFIG0_21) {
+
+        size_t num_list_entries_that_fit = 0;
+        size_t required_size = sizeof(struct FIGtype0_21_header);
+
+        size_t list_entry_size = sizeof(FIGtype0_21_fi_list_header);
+        switch ((*freqListEntryFIG0_21)->rm) {
+            case RangeModulation::dab_ensemble:
+                list_entry_size += (*freqListEntryFIG0_21)->fi_dab.frequencies.size() * 3;
+                break;
+            case RangeModulation::fm_with_rds:
+                list_entry_size += (*freqListEntryFIG0_21)->fi_fm.frequencies.size() * 3;
+                break;
+            case RangeModulation::amss:
+                list_entry_size += 1; // Id field 2
+                list_entry_size += (*freqListEntryFIG0_21)->fi_amss.frequencies.size() * 3;
+                break;
+            case RangeModulation::drm:
+                list_entry_size += 1; // Id field 2
+                list_entry_size += (*freqListEntryFIG0_21)->fi_drm.frequencies.size() * 3;
+                break;
+        }
+        required_size += list_entry_size;
+
+        etiLog.level(debug) << "FIG0/21 " << num_list_entries_that_fit << " entries"
+            "will fit";
+
+
+        if (fig0 == nullptr) {
+            if (remaining < 2 + required_size) {
+                break;
+            }
+            fig0 = (FIGtype0*)buf;
+            fig0->FIGtypeNumber = 0;
+            fig0->Length = 1;
+            fig0->CN =
+                (freqListEntryFIG0_21 == ensemble->frequency_information.begin() ? 0 : 1);
+            fig0->OE = 0;
+            fig0->PD = false;
+            fig0->Extension = 21;
+
+            buf += 2;
+            remaining -= 2;
+        }
+        else if (remaining < required_size) {
+            break;
+        }
+
+        auto *fig0_21_header = (FIGtype0_21_header*)buf;
+        switch ((*freqListEntryFIG0_21)->rm) {
+            case RangeModulation::dab_ensemble:
+                fig0_21_header->length_fi = (*freqListEntryFIG0_21)->fi_dab.frequencies.size();
+                break;
+            case RangeModulation::fm_with_rds:
+                fig0_21_header->length_fi = (*freqListEntryFIG0_21)->fi_fm.frequencies.size();
+                break;
+            case RangeModulation::drm:
+                fig0_21_header->length_fi = (*freqListEntryFIG0_21)->fi_drm.frequencies.size();
+                break;
+            case RangeModulation::amss:
+                fig0_21_header->length_fi = (*freqListEntryFIG0_21)->fi_amss.frequencies.size();
+                break;
+        }
+        fig0_21_header->rfa = 0;
+
+#error "Why do we have lists of FI lists? This is confusing"
+
+        switch ((*freqListEntryFIG0_21)->rm) {
+            case RangeModulation::dab_ensemble:
+                for (const auto& freq : (*freqListEntryFIG0_21)->fi_dab.frequencies) {
+
+                }
+                break;
+            case RangeModulation::fm_with_rds:
+                break;
+            case RangeModulation::drm:
+                break;
+            case RangeModulation::amss:
+                break;
+        }
+
+        fig0->Length += sizeof(struct FIGtype0_21_header);
+        buf += sizeof(struct FIGtype0_21_header);
+        remaining -= sizeof(struct FIGtype0_21_header);
+    }
+
+    if (freqListEntryFIG0_21 == ensemble->frequency_information.end()) {
+        fs.complete_fig_transmitted = true;
+    }
+
+    fs.num_bytes_written = max_size - remaining;
+    return fs;
+}
+
+}
+