2 * Copyright © 2012 Mike Beattie <mike@ethernal.org>
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.
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.
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.
18 package org.altusmetrum.AltosDroid;
20 import java.lang.ref.WeakReference;
21 import java.util.ArrayList;
22 import java.util.concurrent.TimeoutException;
24 import android.app.Notification;
25 //import android.app.NotificationManager;
26 import android.app.PendingIntent;
27 import android.app.Service;
28 import android.bluetooth.BluetoothDevice;
29 import android.content.Intent;
30 //import android.os.Bundle;
31 import android.os.IBinder;
32 import android.os.Handler;
33 import android.os.Message;
34 import android.os.Messenger;
35 import android.os.RemoteException;
36 import android.util.Log;
37 import android.widget.Toast;
39 //import org.altusmetrum.AltosLib.*;
41 public class TelemetryService extends Service {
43 private static final String TAG = "TelemetryService";
44 private static final boolean D = true;
46 static final int MSG_REGISTER_CLIENT = 1;
47 static final int MSG_UNREGISTER_CLIENT = 2;
48 static final int MSG_CONNECT = 3;
49 static final int MSG_CONNECTED = 4;
50 static final int MSG_CONNECT_FAILED = 5;
51 static final int MSG_DISCONNECTED = 6;
52 static final int MSG_TELEMETRY = 7;
54 public static final int STATE_NONE = 0;
55 public static final int STATE_READY = 1;
56 public static final int STATE_CONNECTING = 2;
57 public static final int STATE_CONNECTED = 3;
59 // Unique Identification Number for the Notification.
60 // We use it on Notification start, and to cancel it.
61 private int NOTIFICATION = R.string.telemetry_service_label;
62 //private NotificationManager mNM;
64 ArrayList<Messenger> mClients = new ArrayList<Messenger>(); // Keeps track of all current registered clients.
65 final Handler mHandler = new IncomingHandler(this);
66 final Messenger mMessenger = new Messenger(mHandler); // Target we publish for clients to send messages to IncomingHandler.
68 // Name of the connected device
69 private BluetoothDevice device = null;
70 private AltosBluetooth mAltosBluetooth = null;
71 private TelemetryReader mTelemetryReader = null;
73 // internally track state of bluetooth connection
74 private int state = STATE_NONE;
76 // Handler of incoming messages from clients.
77 static class IncomingHandler extends Handler {
78 private final WeakReference<TelemetryService> service;
79 IncomingHandler(TelemetryService s) { service = new WeakReference<TelemetryService>(s); }
82 public void handleMessage(Message msg) {
83 TelemetryService s = service.get();
85 case MSG_REGISTER_CLIENT:
86 s.mClients.add(msg.replyTo);
88 msg.replyTo.send(Message.obtain(null, AltosDroid.MSG_DEVNAME, s.device.getName()));
89 msg.replyTo.send(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, s.state, -1));
90 } catch (RemoteException e) {
91 s.mClients.remove(msg.replyTo);
93 if (D) Log.d(TAG, "Client bound to service");
95 case MSG_UNREGISTER_CLIENT:
96 s.mClients.remove(msg.replyTo);
97 if (D) Log.d(TAG, "Client unbound from service");
100 if (D) Log.d(TAG, "Connect command received");
101 s.device = (BluetoothDevice) msg.obj;
102 s.startAltosBluetooth();
105 if (D) Log.d(TAG, "Connected to device");
108 case MSG_CONNECT_FAILED:
109 if (D) Log.d(TAG, "Connection failed... retrying");
110 s.startAltosBluetooth();
112 case MSG_DISCONNECTED:
113 if (D) Log.d(TAG, "Disconnected from " + s.device.getName());
114 s.stopAltosBluetooth();
117 s.sendMessageToClients(Message.obtain(null, AltosDroid.MSG_TELEMETRY, msg.obj));
120 super.handleMessage(msg);
125 private void sendMessageToClients(Message m) {
126 for (int i=mClients.size()-1; i>=0; i--) {
128 mClients.get(i).send(m);
129 } catch (RemoteException e) {
135 private void stopAltosBluetooth() {
136 if (D) Log.d(TAG, "stopAltosBluetooth(): begin");
137 setState(STATE_READY);
138 if (mTelemetryReader != null) {
139 if (D) Log.d(TAG, "stopAltosBluetooth(): stopping TelemetryReader");
140 mTelemetryReader.interrupt();
142 mTelemetryReader.join();
143 } catch (InterruptedException e) {
145 mTelemetryReader = null;
147 if (mAltosBluetooth != null) {
148 if (D) Log.d(TAG, "stopAltosBluetooth(): stopping AltosBluetooth");
149 mAltosBluetooth.close();
150 mAltosBluetooth = null;
155 private void startAltosBluetooth() {
156 if (mAltosBluetooth == null) {
157 if (D) Log.d(TAG, String.format("startAltosBluetooth(): Connecting to %s (%s)", device.getName(), device.getAddress()));
158 mAltosBluetooth = new AltosBluetooth(device, mHandler);
159 setState(STATE_CONNECTING);
161 stopAltosBluetooth();
162 mHandler.sendMessageDelayed(Message.obtain(null, MSG_CONNECT, device), 1000);
166 private synchronized void setState(int s) {
167 if (D) Log.d(TAG, "setState(): " + state + " -> " + s);
170 sendMessageToClients(Message.obtain(null, AltosDroid.MSG_STATE_CHANGE, state, -1));
173 private void connected() {
174 sendMessageToClients(Message.obtain(null, AltosDroid.MSG_DEVNAME, device.getName()));
175 setState(STATE_CONNECTED);
177 sendMessageToClients(Message.obtain(null, AltosDroid.MSG_DEVCONFIG, mAltosBluetooth.config_data()));
178 } catch (InterruptedException e) {
179 } catch (TimeoutException e) {
181 mTelemetryReader = new TelemetryReader(mAltosBluetooth, mHandler);
182 mTelemetryReader.start();
187 public void onCreate() {
188 // Create a reference to the NotificationManager so that we can update our notifcation text later
189 //mNM = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
191 setState(STATE_READY);
195 public int onStartCommand(Intent intent, int flags, int startId) {
196 Log.i("TelemetryService", "Received start id " + startId + ": " + intent);
198 CharSequence text = getText(R.string.telemetry_service_started);
200 // Create notification to be displayed while the service runs
201 Notification notification = new Notification(R.drawable.am_status_c, text, 0);
203 // The PendingIntent to launch our activity if the user selects this notification
204 PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
205 new Intent(this, AltosDroid.class), 0);
207 // Set the info for the views that show in the notification panel.
208 notification.setLatestEventInfo(this, getText(R.string.telemetry_service_label), text, contentIntent);
210 // Set the notification to be in the "Ongoing" section.
211 notification.flags |= Notification.FLAG_ONGOING_EVENT;
213 // Move us into the foreground.
214 startForeground(NOTIFICATION, notification);
216 // We want this service to continue running until it is explicitly
217 // stopped, so return sticky.
222 public void onDestroy() {
224 // Stop the bluetooth Comms threads
225 stopAltosBluetooth();
227 // Demote us from the foreground, and cancel the persistent notification.
228 stopForeground(true);
230 // Tell the user we stopped.
231 Toast.makeText(this, R.string.telemetry_service_stopped, Toast.LENGTH_SHORT).show();
235 public IBinder onBind(Intent intent) {
236 return mMessenger.getBinder();