1 files changed, 126 insertions, 0 deletions
diff --git a/altoslib/AltosEepromRecord.java b/altoslib/AltosEepromRecord.java
new file mode 100644
index 00000000..094584fe
--- /dev/null
+++ b/altoslib/AltosEepromRecord.java
@@ -0,0 +1,126 @@
+/*
+ * Copyright © 2017 Keith Packard <keithp@keithp.com>
+ *
+ * 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 of the License, 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.
+ */
+
+package org.altusmetrum.altoslib_12;
+
+public abstract class AltosEepromRecord implements Comparable<AltosEepromRecord> {
+
+	AltosEeprom		eeprom;
+
+	int			wide_tick;
+
+	final int		start;
+	final int		length;
+
+	public final static int header_length = 4;
+
+	public int cmd() {
+		return eeprom.data8(start);
+	}
+
+	public int tick() {
+		return eeprom.data16(start+2);
+	}
+
+	public int data8(int i) {
+		i += start + header_length;
+		return eeprom.data8(i);
+	}
+
+	public int data16(int i) {
+		return ((data8(i) | (data8(i+1) << 8)) << 16) >> 16;
+	}
+
+	public int data24(int i) {
+		return data8(i) | (data8(i+1) << 8) | (data8(i+2) << 16);
+	}
+
+	public int data32(int i) {
+		return data8(i) | (data8(i+1) << 8) | (data8(i+2) << 16) | (data8(i+3) << 24);
+	}
+
+	public boolean valid(int s) {
+		return AltosConvert.checksum(eeprom.data, s, length) == 0;
+	}
+
+	public boolean valid() {
+		return valid(start);
+	}
+
+	private int cmdi() {
+		if (cmd() == AltosLib.AO_LOG_FLIGHT)
+			return 0;
+		return 1;
+	}
+
+	public AltosConfigData config_data() {
+		return eeprom.config_data();
+	}
+
+	public int compareTo(AltosEepromRecord o) {
+		int	cmd_diff = cmdi() - o.cmdi();
+
+		if (cmd_diff != 0)
+			return cmd_diff;
+
+		int	tick_diff = wide_tick - o.wide_tick;
+
+		if (tick_diff != 0)
+			return tick_diff;
+		return start - o.start;
+	}
+
+	/* AltosDataProvider */
+	public void provide_data(AltosDataListener listener, AltosCalData cal_data) {
+		cal_data.set_tick(tick());
+		if (cmd() == AltosLib.AO_LOG_FLIGHT)
+			cal_data.set_boost_tick();
+		listener.set_time(cal_data.time());
+
+		/* Flush any pending GPS changes */
+		if (!AltosLib.is_gps_cmd(cmd())) {
+			AltosGPS gps = cal_data.temp_gps();
+			if (gps != null) {
+				listener.set_gps(gps);
+				cal_data.reset_temp_gps();
+			}
+		}
+	}
+
+	public int next_start() {
+		int	s = start + length;
+
+		while (s + length <= eeprom.data.size()) {
+			if (valid(s))
+				return s;
+			s += length;
+		}
+		return -1;
+	}
+
+	public boolean hasNext() {
+		return next_start() >= 0;
+	}
+
+	public abstract AltosEepromRecord next();
+
+	public AltosEepromRecord(AltosEeprom eeprom, int start, int length) {
+		this.eeprom = eeprom;
+		this.start = start;
+		this.length = length;
+
+		while (start + length < eeprom.data.size() && !valid())
+			start += length;
+	}
+}