Abstract packet type/implementation details.

firmware/common/message.hpp

@@ -27,6 +27,8 @@
 #include <array>
 #include <functional>
 
+#include "packet.hpp"
+
 #include "utility.hpp"
 
 #include "ch.h"
@@ -201,11 +203,8 @@ public:
 	ChannelSpectrum spectrum;
 };
 
-#include <bitset>
-
 struct AISPacket {
-	std::bitset<1024> payload;
-	size_t bits_received { 0 };
+	::Packet packet;
 };
 
 class AISPacketMessage : public Message {
@@ -219,8 +218,7 @@ public:
 };
 
 struct TPMSPacket {
-	std::bitset<1024> payload;
-	size_t bits_received { 0 };
+	::Packet packet;
 };
 
 class TPMSPacketMessage : public Message {
@@ -249,8 +247,7 @@ struct ERTPacket {
 	};
 
 	Type type { Type::Unknown };
-	std::bitset<1024> payload;
-	size_t bits_received { 0 };
+	::Packet packet;
 };
 
 class ERTPacketMessage : public Message {

firmware/common/packet.hpp

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * This program 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 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __PACKET_H__
+#define __PACKET_H__
+
+#include <cstddef>
+#include <bitset>
+
+class Packet {
+public:
+	void add(const bool symbol) {
+		if( count < capacity() ) {
+			data[count++] = symbol;
+		}
+	}
+
+	uint_fast8_t operator[](const size_t index) const {
+		return (index < size()) ? data[index] : 0;
+	}
+
+	size_t size() const {
+		return count;
+	}
+
+	size_t capacity() const {
+		return data.size();
+	}
+
+	void clear() {
+		count = 0;
+	}
+
+private:
+	std::bitset<1408> data;
+	size_t count { 0 };
+};
+
+#endif/*__PACKET_H__*/