AIS decoding and really bad UI.

The decoder needs a serious refactoring/decoupling.
The UI just dumps bits of the received packets into a console window, whcih scrolls too quickly in an AIS-dense area with a good antenna.

firmware/application/Makefile

@@ -167,6 +167,7 @@ CPPSRC = main.cpp \
          ui_spectrum.cpp \
          receiver_model.cpp \
          spectrum_color_lut.cpp \
+         ais_baseband.cpp \
          ../common/utility.cpp \
          ../common/chibios_cpp.cpp \
          ../common/debug.cpp \

firmware/application/ui_receiver.cpp

@@ -27,6 +27,8 @@
 #include "portapack.hpp"
 using namespace portapack;
 
+#include "ais_baseband.hpp"
+
 namespace ui {
 
 /* BasebandBandwidthField ************************************************/
@@ -496,8 +498,8 @@ ReceiverView::~ReceiverView() {
 void ReceiverView::on_show() {
 	context().message_map.register_handler(Message::ID::FSKPacket,
 		[this](Message* const p) {
-			auto message = static_cast<FSKPacketMessage*>(p);
-			(void)message;
+			const auto message = static_cast<const FSKPacketMessage*>(p);
+			this->on_packet_ais(*message);
 		}
 	);
 }
@@ -506,7 +508,13 @@ void ReceiverView::on_hide() {
 	context().message_map.unregister_handler(Message::ID::FSKPacket);
 }
 
+void ReceiverView::on_packet_ais(const FSKPacketMessage& message) {
+	const auto result = baseband::ais::packet_decode(message.packet.payload, message.packet.bits_received);
 
+	auto console = reinterpret_cast<Console*>(widget_content.get());
+	if( result.first == "OK" ) {
+		console->writeln(result.second);
+	}
 }
 
 void ReceiverView::focus() {

firmware/application/ui_receiver.hpp

@@ -415,6 +415,7 @@ private:
 			{ " AM ", 0 },
 			{ "NFM ", 1 },
 			{ "WFM ", 2 },
+			{ "AIS ", 3 },
 			{ "SPEC", 4 },
 		}
 	};
@@ -470,6 +471,8 @@ private:
 	void on_headphone_volume_changed(int32_t v);
 //	void on_baseband_oversampling_changed(int32_t v);
 	void on_edit_frequency();
+
+	void on_packet_ais(const FSKPacketMessage& message);
 };
 
 } /* namespace ui */