diff options
Diffstat (limited to 'altosdroid/src/org/altusmetrum/AltosDroid/TelemetryReader.java')
| -rw-r--r-- | altosdroid/src/org/altusmetrum/AltosDroid/TelemetryReader.java | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/altosdroid/src/org/altusmetrum/AltosDroid/TelemetryReader.java b/altosdroid/src/org/altusmetrum/AltosDroid/TelemetryReader.java new file mode 100644 index 00000000..66e9c6bd --- /dev/null +++ b/altosdroid/src/org/altusmetrum/AltosDroid/TelemetryReader.java @@ -0,0 +1,94 @@ +/*
+ * Copyright © 2011 Keith Packard <keithp@keithp.com>
+ * Copyright © 2012 Mike Beattie <mike@ethernal.org>
+ *
+ * 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 org.altusmetrum.AltosDroid;
+
+import java.text.*;
+import java.io.*;
+import java.util.concurrent.*;
+import android.util.Log;
+import android.os.Handler;
+
+import org.altusmetrum.AltosLib.*;
+
+
+public class TelemetryReader extends Thread {
+
+ private static final String TAG = "TelemetryReader";
+
+ int crc_errors;
+
+ Handler handler;
+
+ AltosLink link;
+ AltosRecord previous;
+
+ LinkedBlockingQueue<AltosLine> telem;
+
+ public AltosRecord read() throws ParseException, AltosCRCException, InterruptedException, IOException {
+ AltosLine l = telem.take();
+ if (l.line == null)
+ throw new IOException("IO error");
+ AltosRecord next = AltosTelemetry.parse(l.line, previous);
+ previous = next;
+ return next;
+ }
+
+ public void close() {
+ previous = null;
+ link.remove_monitor(telem);
+ link = null;
+ telem.clear();
+ telem = null;
+ }
+
+ public void run() {
+ AltosState state = null;
+
+ try {
+ for (;;) {
+ try {
+ AltosRecord record = read();
+ if (record == null)
+ break;
+ state = new AltosState(record, state);
+
+ handler.obtainMessage(TelemetryService.MSG_TELEMETRY, state).sendToTarget();
+ } catch (ParseException pp) {
+ Log.e(TAG, String.format("Parse error: %d \"%s\"", pp.getErrorOffset(), pp.getMessage()));
+ } catch (AltosCRCException ce) {
+ ++crc_errors;
+ }
+ }
+ } catch (InterruptedException ee) {
+ } catch (IOException ie) {
+ } finally {
+ close();
+ }
+ }
+
+ public TelemetryReader (AltosLink in_link, Handler in_handler) {
+ link = in_link;
+ handler = in_handler;
+
+ previous = null;
+ telem = new LinkedBlockingQueue<AltosLine>();
+ link.add_monitor(telem);
+ }
+}
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