Start work on new FIG carousel

1 files changed, 148 insertions, 0 deletions

diff --git a/src/fig/FIG0.cpp b/src/fig/FIG0.cpp
new file mode 100644
index 0000000..85a06b5
--- /dev/null
+++ b/src/fig/FIG0.cpp
@@ -0,0 +1,148 @@
+/*
+   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) 2015
+   Matthias P. Braendli, matthias.braendli@mpb.li
+
+   Implementation of FIG0
+   */
+/*
+   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.h"
+#include "DabMultiplexer.h"
+
+#define PACKED __attribute__ ((packed))
+
+//=========== FIG 0/0 ===========
+
+
+size_t FIG0_0::fill(uint8_t *buf, size_t max_size)
+{
+    if (max_size < 6) {
+        return 0;
+    }
+
+    FIGtype0_0 *fig0_0;
+    fig0_0 = (FIGtype0_0 *)buf;
+
+    fig0_0->FIGtypeNumber = 0;
+    fig0_0->Length = 5;
+    fig0_0->CN = 0;
+    fig0_0->OE = 0;
+    fig0_0->PD = 0;
+    fig0_0->Extension = 0;
+
+    fig0_0->EId = htons(m_rti->ensemble->id);
+    fig0_0->Change = 0;
+    fig0_0->Al = 0;
+    fig0_0->CIFcnt_hight = (m_rti->currentFrame / 250) % 20;
+    fig0_0->CIFcnt_low = (m_rti->currentFrame % 250);
+
+    return 6;
+}
+
+//=========== FIG 0/1 ===========
+//
+
+FIG0_1::FIG0_1(FIGRuntimeInformation *rti) : m_rti(rti)
+{
+    subchannelFIG0_1 = m_rti->ensemble->subchannels.end();
+}
+
+size_t FIG0_1::fill(uint8_t *buf, size_t max_size)
+{
+    size_t remaining = max_size;
+    if (max_size < 6) {
+        return 0;
+    }
+    FIGtype0_1 *fig0_1;
+    figtype0_1 = (FIGtype0_1 *)buf;
+
+    figtype0_1->FIGtypeNumber = 0;
+    figtype0_1->Length = 1;
+    figtype0_1->CN = 0;
+    figtype0_1->OE = 0;
+    figtype0_1->PD = 0;
+    figtype0_1->Extension = 1;
+    buf += 2;
+    remaining -= 2;
+
+    // Rotate through the subchannels until there is no more
+    // space in the FIG0/1
+    if (subchannelFIG0_1 == m_rti->ensemble->subchannels.end()) {
+        subchannelFIG0_1 = m_rti->ensemble->subchannels.begin();
+    }
+
+    for (; subchannelFIG0_1 != m_rti->ensemble->subchannels.end();
+            ++subchannelFIG0_1) {
+        dabProtection* protection = &(*subchannelFIG0_1)->protection;
+
+        if ( (protection->form == UEP && remaining < 3) ||
+             (protection->form == EEP && remaining < 4) ) {
+            break;
+        }
+
+        if (protection->form == UEP) {
+            fig0_1subchShort =
+                (FIG_01_SubChannel_ShortF*)buf;
+            fig0_1subchShort->SubChId = (*subchannelFIG0_1)->id;
+
+            fig0_1subchShort->StartAdress_high =
+                (*subchannelFIG0_1)->startAddress / 256;
+            fig0_1subchShort->StartAdress_low =
+                (*subchannelFIG0_1)->startAddress % 256;
+
+            fig0_1subchShort->Short_Long_form = 0;
+            fig0_1subchShort->TableSwitch = 0;
+            fig0_1subchShort->TableIndex =
+                protection->uep.tableIndex;
+
+            buf += 3;
+            remaining -= 3;
+            figtype0_1->Length += 3;
+        }
+        else if (protection->form == EEP) {
+            fig0_1subchLong1 =
+                (FIG_01_SubChannel_LongF*)buf;
+            fig0_1subchLong1->SubChId = (*subchannelFIG0_1)->id;
+
+            fig0_1subchLong1->StartAdress_high =
+                (*subchannelFIG0_1)->startAddress / 256;
+            fig0_1subchLong1->StartAdress_low =
+                (*subchannelFIG0_1)->startAddress % 256;
+
+            fig0_1subchLong1->Short_Long_form = 1;
+            fig0_1subchLong1->Option = protection->eep.GetOption();
+            fig0_1subchLong1->ProtectionLevel =
+                protection->level;
+
+            fig0_1subchLong1->Sub_ChannelSize_high =
+                getSizeCu(*subchannelFIG0_1) / 256;
+            fig0_1subchLong1->Sub_ChannelSize_low =
+                getSizeCu(*subchannelFIG0_1) % 256;
+
+            buf += 4;
+            remaining -= 4;
+            figtype0_1->Length += 4;
+        }
+    }
+
+    return max_size - remaining;
+}