javax.bluetooth.DiscoveryAgent Java Examples

public RemoteDevice[] retrieveDevices(int option) {
    switch (option) {
        case DiscoveryAgent.CACHED:
            // IMPL_NOTE: use native cache keeping addresses of found devices
            // to share the cache between multiple isolates
            return getCachedDevices();
        case DiscoveryAgent.PREKNOWN:
            Vector pk = BCC.getInstance().getPreknownDevices();
            if (pk == null || pk.size() == 0) {
                return null;
            }
            RemoteDevice[] res = new RemoteDevice[pk.size()];
            for (int i = 0; i < pk.size(); i++) {
                String addr = (String)pk.elementAt(i);
                res[i] = getRemoteDevice(addr);
            }
            return res;
        default:
            throw new IllegalArgumentException("Invalid option value: "
                    + option);
    }
}
 

public static void registerUrl(String url) throws IOException {
    ServiceRecordImpl record = null;
    String protocol = url.substring(0, url.indexOf(':')).toUpperCase();
    if (protocol.equals("BTL2CAP")) {
        record = L2CAPNotifierImpl.createServiceRecord(url);
    } else if (protocol.equals("BTSPP")) {
        record = BTSPPNotifierImpl.createServiceRecord(url);
    } else if (protocol.equals("BTGOEP")) {
        record = BTSPPNotifierImpl.createServiceRecord(url);
    } else {
        throw new RuntimeException("Unsupported Bluetooth protocol.");
    }
    record.setHandle(0);
    if (!BCC.getInstance().isBluetoothEnabled() &&
            !BCC.getInstance().enableBluetooth()) {
        throw new IOException("Bluetooth radio is not enabled.");
    }
    if (!registerUrl(url, srs.serialize(record))) {
        throw new IOException("Error registering Bluetooth URL.");
    }
    if (BCC.getInstance().getAccessCode() != DiscoveryAgent.GIAC) {
        BCC.getInstance().setAccessCode(DiscoveryAgent.GIAC);
    }
    // get the emulation services up and running
    SDDB.getInstance();
}
 

public Value inquire()
	throws FaultException {
	Value retValue = null;
	try {
		DiscoveryListenerImpl listener = new DiscoveryListenerImpl();
		LocalDevice.getLocalDevice().getDiscoveryAgent().startInquiry(
			DiscoveryAgent.GIAC,
			listener );
		retValue = listener.getResult();
	} catch( BluetoothStateException e ) {
		throw new FaultException( e );
	}
	return retValue;
}
 

public boolean startInquiry(int accessCode, DiscoveryListener listener)
        throws BluetoothStateException {

    if (accessCode != DiscoveryAgent.GIAC &&
            accessCode != DiscoveryAgent.LIAC &&
            (accessCode < 0x9E8B00 || accessCode > 0x9E8B3F)) {
        throw new IllegalArgumentException("Access code is out of range: "
                + accessCode);
    }

    if (listener == null) {
        throw new NullPointerException("null listener");
    }

    /* IMPL_NOTE see
    // kvem/classes/com/sun/kvem/jsr082/impl/bluetooth/
    //         BTDeviceDiscoverer.java
    // heck what access codes should be supported.
    // Return false if access code is not supported. 
     */

    synchronized (d_lock) {
        if (d_listener != null) {
            throw new BluetoothStateException(
                    "The previous device discovery is running...");
        }
        d_listener = listener;

        /* process the inquiry in the device specific way */
        return startInquiry(accessCode);
    }
}
 

synchronized void notifyNewAccessCode(int oldCode, int newCode) {
    if (newCode == oldCode) {
        return;
    }
    savedCode = oldCode;

    if (newCode == DiscoveryAgent.LIAC) {
        // the currentCode was not LIAC - start a killer
        startTime = System.currentTimeMillis();
        new Thread(this).start();
    } else {
        /*
         * startTime != -1 if the killer is running, but
         * this method may be called by the killer itself -
         * then there is no need to stop it.
         */
        boolean stopKiller = startTime != -1 && isCanceledFromOutside;
        startTime = -1;
        isCanceledFromOutside = false;

        if (stopKiller) {
            try {
                wait();
            } catch (InterruptedException e) {}
        }
    }
}
 

public boolean setDiscoverable(int accessCode)
        throws BluetoothStateException {
    // Check if the specified mode has a valid value
    if (accessCode != DiscoveryAgent.GIAC &&
            accessCode != DiscoveryAgent.LIAC &&
            accessCode != DiscoveryAgent.NOT_DISCOVERABLE &&
            (accessCode < 0x9E8B00 || accessCode > 0x9E8B3F)) {
        throw new IllegalArgumentException("Access code is out of range: "
                + "0x" + Integer.toHexString(accessCode).toUpperCase());
    }
    synchronized (cancelerOfLIAC) {
        /*
         * Accroding to the spec, the device should only be limited
         * discoverable (DiscoveryAgent.LIAC) for 1 minute -
         * then back to the PREVIOUS discoverable mode.
         */
        int oldAccessCode = BCC.getInstance().getAccessCode();
        if (BCC.getInstance().setAccessCode(accessCode)) {
            cancelerOfLIAC.notifyNewAccessCode(oldAccessCode, accessCode);
            if (accessCode != DiscoveryAgent.NOT_DISCOVERABLE) {
                // Start SDDB if discoverable mode was set successfully
                // IMPL_NOTE: Do we really need this step?
                SDDB.getInstance();
            }
            return true;
        }
    }
    return false;
}
 

String selectService(UUID uuid, int security, boolean master)
        throws BluetoothStateException {
    if (DEBUG) {
        System.out.println("selectService:");
        System.out.println("\tuuid=" + uuid);
    }
    Vector disDevsVector = null;
    Hashtable disDevsHash = new Hashtable();

    if (uuid == null) {
        throw new NullPointerException("uuid is null");
    }

    // check in CACHED and PREKNOWN devices
    String url = selectFromDevicesList(agent.retrieveDevices(
            DiscoveryAgent.PREKNOWN), uuid, security, master, disDevsHash);

    if (url != null) {
        return url;
    }
    url = selectFromDevicesList(agent.retrieveDevices(
            DiscoveryAgent.CACHED), uuid, security, master, disDevsHash);

    if (url != null) {
        return url;
    }

    // start own device discovery now
    synchronized (btDevsLock) {
        if (selectDevDisStarted) {
            throw new BluetoothStateException(
                    "The previous device discovery is running...");
        }
        selectDevDisStarted = true;
        btDevs = new Vector();
        btDevsHash = disDevsHash;
    }

    try {
        agent.startInquiry(DiscoveryAgent.GIAC, this);
    } catch (BluetoothStateException btse) {
        synchronized (btDevsLock) {
            selectDevDisStarted = false;
            btDevs = null;
            btDevsHash = null;
        }
        throw btse;
    }

    synchronized (btDevsLock) {
        if (!selectDevDisStopped) {
            try {
                btDevsLock.wait();
            } catch (InterruptedException ie) {
                // ignore (breake waiting)
            }
            disDevsVector = btDevs;
            btDevs = null;
            btDevsHash = null;
            selectDevDisStarted = false;
            selectDevDisStopped = false;
        }
    }

    for (int i = 0; i < disDevsVector.size(); i++) {
        RemoteDevice btDev = (RemoteDevice) disDevsVector.elementAt(i);
        url = selectService(btDev, uuid, security, master);

        if (url != null) {
            if (DEBUG) {
                System.out.println("\turl=" + url);
            }
            return url;
        }
    }
    if (DEBUG) {
        System.out.println("\turl=null");
    }
    return null;
}