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   1 /*
   2  * Copyright © 2010 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 package org.altusmetrum.AltosLib;
  19
  20 import java.lang.*;
  21 import java.text.*;
  22 import java.io.*;
  23 import java.util.concurrent.*;
  24
  25 public class AltosTelemetryReader extends AltosFlightReader {
  26         AltosLink       link;
  27         AltosLog        log;
  28         AltosRecord     previous;
  29         double          frequency;
  30         int             telemetry;
  31
  32         LinkedBlockingQueue<AltosLine> telem;
  33
  34         public AltosRecord read() throws InterruptedException, ParseException, AltosCRCException, IOException {
  35                 AltosLine l = telem.take();
  36                 if (l.line == null)
  37                         throw new IOException("IO error");
  38                 AltosRecord     next = AltosTelemetry.parse(l.line, previous);
  39                 previous = next;
  40                 return next;
  41         }
  42
  43         public void flush() {
  44                 telem.clear();
  45         }
  46
  47         public void close(boolean interrupted) {
  48                 link.remove_monitor(telem);
  49                 log.close();
  50                 link.close();
  51         }
  52
  53         public void set_frequency(double in_frequency) throws InterruptedException, TimeoutException {
  54                 frequency = in_frequency;
  55                 link.set_radio_frequency(frequency);
  56         }
  57
  58         public void save_frequency() {
  59                 AltosPreferences.set_frequency(link.serial, frequency);
  60         }
  61
  62         public void set_telemetry(int in_telemetry) {
  63                 telemetry = in_telemetry;
  64                 link.set_telemetry(telemetry);
  65         }
  66
  67         public void save_telemetry() {
  68                 AltosPreferences.set_telemetry(link.serial, telemetry);
  69         }
  70
  71         public void set_monitor(boolean monitor) {
  72                 link.set_monitor(monitor);
  73         }
  74
  75         public File backing_file() {
  76                 return log.file();
  77         }
  78
  79         public AltosTelemetryReader (AltosLink in_link)
  80                 throws IOException, InterruptedException, TimeoutException {
  81                 log = new AltosLog(link);
  82                 name = link.name;
  83                 previous = null;
  84                 telem = new LinkedBlockingQueue<AltosLine>();
  85                 frequency = AltosPreferences.frequency(link.serial);
  86                 set_frequency(frequency);
  87                 telemetry = AltosPreferences.telemetry(link.serial);
  88                 set_telemetry(telemetry);
  89                 link.add_monitor(telem);
  90         }
  91 }