Extract stats collectors into separate files.

firmware/baseband/rssi_stats_collector.hpp

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+/*
+ * Copyright (C) 2014 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 __RSSI_STATS_COLLECTOR_H__
+#define __RSSI_STATS_COLLECTOR_H__
+
+#include "rssi.hpp"
+#include "message.hpp"
+
+#include <cstdint>
+#include <cstddef>
+
+class RSSIStatisticsCollector {
+public:
+	template<typename Callback>
+	void process(rf::rssi::buffer_t buffer, Callback callback) {
+		auto p = buffer.p;
+		if( p == nullptr ) {
+			return;
+		}
+
+		const auto end = &p[buffer.count];
+		while(p < end) {
+			const uint32_t value = *(p++);
+
+			if( statistics.min > value ) {
+				statistics.min = value;
+			}
+			if( statistics.max < value ) {
+				statistics.max = value;
+			}
+
+			statistics.accumulator += value;
+		}
+		statistics.count += buffer.count;
+
+		const size_t samples_per_update = buffer.sampling_rate * update_interval;
+
+		if( statistics.count >= samples_per_update ) {
+			callback(statistics);
+			statistics.accumulator = 0;
+			statistics.count = 0;
+			const auto value_0 = *p;
+			statistics.min = value_0;
+			statistics.max = value_0;
+		}
+	}
+
+private:
+	static constexpr float update_interval { 0.1f };
+	RSSIStatistics statistics;
+};
+
+#endif/*__RSSI_STATS_COLLECTOR_H__*/