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/*
* 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_1.*;
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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