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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; either version 2 of the License, or
* (at your option) any later version.
*
* 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.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.UUID;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
//import android.os.Bundle;
import android.os.Handler;
//import android.os.Message;
import org.altusmetrum.altoslib_12.*;
public class AltosBluetooth extends AltosDroidLink {
private ConnectThread connect_thread = null;
private BluetoothDevice device;
private BluetoothSocket socket;
private InputStream input;
private OutputStream output;
private boolean pause;
// Constructor
public AltosBluetooth(BluetoothDevice device, Handler handler, boolean pause) {
super(handler);
this.device = device;
this.handler = handler;
this.pause = pause;
connect_thread = new ConnectThread();
connect_thread.start();
}
void connected() {
if (closed()) {
AltosDebug.debug("connected after closed");
return;
}
AltosDebug.check_ui("connected\n");
try {
synchronized(this) {
if (socket != null) {
input = socket.getInputStream();
output = socket.getOutputStream();
super.connected();
}
}
} catch (InterruptedException ie) {
connect_failed();
} catch (IOException io) {
connect_failed();
}
}
private void connect_failed() {
if (closed()) {
AltosDebug.debug("connect_failed after closed");
return;
}
close_device();
input = null;
output = null;
handler.obtainMessage(TelemetryService.MSG_CONNECT_FAILED, this).sendToTarget();
AltosDebug.error("ConnectThread: Failed to establish connection");
}
void close_device() {
BluetoothSocket tmp_socket;
synchronized(this) {
tmp_socket = socket;
socket = null;
}
if (tmp_socket != null) {
try {
tmp_socket.close();
} catch (IOException e) {
AltosDebug.error("close_socket failed");
}
}
}
public void close() {
super.close();
input = null;
output = null;
}
private final UUID SPP_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
private void create_socket(BluetoothDevice device) {
BluetoothSocket tmp_socket = null;
AltosDebug.check_ui("create_socket\n");
try {
tmp_socket = device.createInsecureRfcommSocketToServiceRecord(SPP_UUID);
} catch (IOException e) {
e.printStackTrace();
}
if (socket != null) {
AltosDebug.debug("Socket already allocated %s", socket.toString());
close_device();
}
synchronized (this) {
socket = tmp_socket;
}
}
private class ConnectThread extends Thread {
public void run() {
AltosDebug.debug("ConnectThread: BEGIN (pause %b)", pause);
setName("ConnectThread");
if (pause) {
try {
Thread.sleep(4000);
} catch (InterruptedException e) {
}
}
create_socket(device);
// Always cancel discovery because it will slow down a connection
try {
BluetoothAdapter.getDefaultAdapter().cancelDiscovery();
} catch (Exception e) {
AltosDebug.debug("cancelDiscovery exception %s", e.toString());
}
BluetoothSocket local_socket = null;
synchronized (AltosBluetooth.this) {
if (!closed())
local_socket = socket;
}
if (local_socket != null) {
try {
// Make a connection to the BluetoothSocket
// This is a blocking call and will only return on a
// successful connection or an exception
local_socket.connect();
} catch (Exception e) {
AltosDebug.debug("Connect exception %s", e.toString());
try {
local_socket.close();
} catch (Exception ce) {
AltosDebug.debug("Close exception %s", ce.toString());
}
local_socket = null;
}
}
if (local_socket != null) {
connected();
} else {
connect_failed();
}
AltosDebug.debug("ConnectThread: completed");
}
}
private synchronized void wait_connected() throws InterruptedException, IOException {
AltosDebug.check_ui("wait_connected\n");
if (input == null && socket != null) {
AltosDebug.debug("wait_connected...");
wait();
AltosDebug.debug("wait_connected done");
}
if (socket == null)
throw new IOException();
}
int write(byte[] buffer, int len) {
if (output == null)
return -1;
try {
output.write(buffer, 0, len);
} catch (IOException ie) {
return -1;
}
return len;
}
int read(byte[] buffer, int len) {
if (input == null)
return -1;
try {
return input.read(buffer, 0, len);
} catch (IOException ie) {
return -1;
}
}
// Stubs of required methods when extending AltosLink
public boolean can_cancel_reply() { return false; }
public boolean show_reply_timeout() { return true; }
public void hide_reply_timeout() { }
}
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