From c89a34d1eb25155405b0036baeadc7bbfeade1c2 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Mon, 27 Sep 2010 17:11:48 -0700
Subject: altosui: Create iterables for log file scanning. Split out display
 threads

Convert from log file reading paradigm to using iterators which is
more idiomatic for java. Split more code out of AltosUI.java,
including the display update threads for telemetry monitoring and
logfile replay.x

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 ao-tools/altosui/AltosTelemetryIterable.java | 83 ++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 ao-tools/altosui/AltosTelemetryIterable.java

(limited to 'ao-tools/altosui/AltosTelemetryIterable.java')

diff --git a/ao-tools/altosui/AltosTelemetryIterable.java b/ao-tools/altosui/AltosTelemetryIterable.java
new file mode 100644
index 00000000..0a125c98
--- /dev/null
+++ b/ao-tools/altosui/AltosTelemetryIterable.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright © 2010 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; version 2 of the License.
+ *
+ * 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; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package altosui;
+
+import java.io.*;
+import java.util.*;
+import java.text.*;
+import altosui.AltosTelemetry;
+
+public class AltosTelemetryIterable extends AltosRecordIterable {
+	LinkedList<AltosRecord>	records;
+
+	public Iterator<AltosRecord> iterator () {
+		return records.iterator();
+	}
+
+	public AltosTelemetryIterable (FileInputStream input) {
+		boolean saw_boost = false;
+		int	current_tick = 0;
+		int	boost_tick = 0;
+
+		records = new LinkedList<AltosRecord> ();
+
+		try {
+			for (;;) {
+				String line = AltosRecord.gets(input);
+				if (line == null) {
+					break;
+				}
+				try {
+					AltosTelemetry record = new AltosTelemetry(line);
+					if (record == null)
+						break;
+					if (records.isEmpty()) {
+						current_tick = record.tick;
+					} else {
+						int tick = record.tick | (current_tick & ~ 0xffff);
+						if (tick < current_tick - 0x1000)
+							tick += 0x10000;
+						current_tick = tick;
+						record.tick = current_tick;
+					}
+					if (!saw_boost && record.state >= Altos.ao_flight_boost)
+					{
+						saw_boost = true;
+						boost_tick = record.tick;
+					}
+					records.add(record);
+				} catch (ParseException pe) {
+					System.out.printf("parse exception %s\n", pe.getMessage());
+				} catch (AltosCRCException ce) {
+					System.out.printf("crc error\n");
+				}
+			}
+		} catch (IOException io) {
+			System.out.printf("io exception\n");
+		}
+
+		/* adjust all tick counts to be relative to boost time */
+		for (AltosRecord r : this)
+			r.time = (r.tick - boost_tick) / 100.0;
+
+		try {
+			input.close();
+		} catch (IOException ie) {
+		}
+	}
+}
-- 
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