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Diffstat (limited to 'telegps/TeleGPSDisplayThread.java')
| -rw-r--r-- | telegps/TeleGPSDisplayThread.java | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/telegps/TeleGPSDisplayThread.java b/telegps/TeleGPSDisplayThread.java new file mode 100644 index 00000000..a3d4ea07 --- /dev/null +++ b/telegps/TeleGPSDisplayThread.java @@ -0,0 +1,207 @@ +/* + * 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 org.altusmetrum.telegps; + +import java.awt.*; +import javax.swing.*; +import java.io.*; +import java.text.*; +import org.altusmetrum.altoslib_4.*; +import org.altusmetrum.altosuilib_2.*; + +public class TeleGPSDisplayThread extends Thread { + + Frame parent; + IdleThread idle_thread; + AltosVoice voice; + AltosFlightReader reader; + AltosState old_state, state; + AltosListenerState listener_state; + AltosFlightDisplay display; + + synchronized void show_safely() { + final AltosState my_state = state; + final AltosListenerState my_listener_state = listener_state; + Runnable r = new Runnable() { + public void run() { + try { + display.show(my_state, my_listener_state); + } catch (Exception ex) { + } + } + }; + SwingUtilities.invokeLater(r); + } + + void reading_error_internal() { + JOptionPane.showMessageDialog(parent, + String.format("Error reading from \"%s\"", reader.name), + "Telemetry Read Error", + JOptionPane.ERROR_MESSAGE); + } + + void reading_error_safely() { + Runnable r = new Runnable() { + public void run() { + try { + reading_error_internal(); + } catch (Exception ex) { + } + } + }; + SwingUtilities.invokeLater(r); + } + + class IdleThread extends Thread { + + boolean started; + int report_interval; + long report_time; + + public synchronized void report(boolean last) { + if (state == null) + return; + + if (state.height() != AltosLib.MISSING) { + if (state.from_pad != null) { + voice.speak("Height %s, bearing %s %d, elevation %d, range %s, .\n", + AltosConvert.height.say(state.gps_height()), + state.from_pad.bearing_words( + AltosGreatCircle.BEARING_VOICE), + (int) (state.from_pad.bearing + 0.5), + (int) (state.elevation + 0.5), + AltosConvert.distance.say(state.range)); + } else { + voice.speak("Height %s.\n", + AltosConvert.height.say(state.height())); + } + } + } + + long now () { + return System.currentTimeMillis(); + } + + void set_report_time() { + report_time = now() + report_interval; + } + + public void run () { + try { + for (;;) { + if (reader.has_monitor_battery()) { + listener_state.battery = reader.monitor_battery(); + show_safely(); + } + set_report_time(); + for (;;) { + voice.drain(); + synchronized (this) { + long sleep_time = report_time - now(); + if (sleep_time <= 0) + break; + wait(sleep_time); + } + } + + report(false); + } + } catch (InterruptedException ie) { + try { + voice.drain(); + } catch (InterruptedException iie) { } + } + } + + public synchronized void notice(boolean spoken) { + if (old_state != null && old_state.state != state.state) { + report_time = now(); + this.notify(); + } else if (spoken) + set_report_time(); + } + + public IdleThread() { + report_interval = 10000; + } + } + + synchronized boolean tell() { + boolean ret = false; + if (old_state == null || old_state.gps_ready != state.gps_ready) { + if (state.gps_ready) { + voice.speak("GPS ready"); + ret = true; + } + else if (old_state != null) { + voice.speak("GPS lost"); + ret = true; + } + } + old_state = state; + return ret; + } + + public void run() { + boolean interrupted = false; + boolean told; + + idle_thread = new IdleThread(); + idle_thread.start(); + + try { + for (;;) { + try { + state = reader.read(); + if (state == null) + break; + reader.update(state); + show_safely(); + told = tell(); + idle_thread.notice(told); + } catch (ParseException pp) { + System.out.printf("Parse error: %d \"%s\"\n", pp.getErrorOffset(), pp.getMessage()); + } catch (AltosCRCException ce) { + ++listener_state.crc_errors; + show_safely(); + } + } + } catch (InterruptedException ee) { + interrupted = true; + } catch (IOException ie) { + reading_error_safely(); + } finally { + if (!interrupted) + idle_thread.report(true); + reader.close(interrupted); + idle_thread.interrupt(); + try { + idle_thread.join(); + } catch (InterruptedException ie) {} + } + } + + public TeleGPSDisplayThread(Frame in_parent, AltosVoice in_voice, AltosFlightDisplay in_display, AltosFlightReader in_reader) { + listener_state = new AltosListenerState(); + parent = in_parent; + voice = in_voice; + display = in_display; + reader = in_reader; + display.reset(); + } +} |