1 files changed, 417 insertions, 0 deletions
diff --git a/java/direct_bt/tinyb/Adapter.java b/java/direct_bt/tinyb/Adapter.java
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+/**
+ * Author: Sven Gothel <[email protected]>
+ * Copyright (c) 2020 Gothel Software e.K.
+ * Copyright (c) 2020 ZAFENA AB
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package direct_bt.tinyb;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.tinyb.BluetoothAdapter;
+import org.tinyb.BluetoothDevice;
+import org.tinyb.BluetoothException;
+import org.tinyb.BluetoothManager;
+import org.tinyb.BluetoothNotification;
+import org.tinyb.BluetoothType;
+import org.tinyb.BluetoothDeviceDiscoveryListener;
+import org.tinyb.TransportType;
+
+public class Adapter extends DBTObject implements BluetoothAdapter
+{
+    private final String address;
+    private final String name;
+    private final DiscoveryThread discoveryThread;
+
+    /* pp */ Adapter(final long nativeInstance, final String address, final String name)
+    {
+        super(nativeInstance, compHash(address, name));
+        this.address = address;
+        this.name = name;
+        this.discoveryThread = new DiscoveryThread();
+        this.discoveryThread.start(null);
+        initImpl(this.discoveryThread.deviceDiscoveryListener);
+    }
+
+    @Override
+    public synchronized void close() {
+        discoveryThread.stop();
+        super.close();
+    }
+
+    @Override
+    public boolean equals(final Object obj)
+    {
+        if (obj == null || !(obj instanceof Device)) {
+            return false;
+        }
+        final Adapter other = (Adapter)obj;
+        return address.equals(other.address) && name.equals(other.name);
+    }
+
+    @Override
+    public String getAddress() { return address; }
+
+    @Override
+    public String getName() { return name; }
+
+    public String getInterfaceName() {
+        throw new UnsupportedOperationException(); // FIXME
+    }
+
+    @Override
+    public BluetoothType getBluetoothType() { return class_type(); }
+
+    static BluetoothType class_type() { return BluetoothType.ADAPTER; }
+
+    @Override
+    public final BluetoothAdapter clone()
+    { throw new UnsupportedOperationException(); } // FIXME
+
+    @Override
+    public BluetoothDevice find(final String name, final String address, final long timeoutMS) {
+        final BluetoothManager manager = Manager.getBluetoothManager();
+        return (BluetoothDevice) manager.find(BluetoothType.DEVICE, name, address, this, timeoutMS);
+    }
+
+    @Override
+    public BluetoothDevice find(final String name, final String address) {
+        return find(name, address, 0);
+    }
+
+    @Override
+    public String toString() {
+        final StringBuilder out = new StringBuilder();
+        out.append("Adapter[").append(getAddress()).append(", '").append(getName()).append("', id=").append("]");
+        synchronized(discoveryThread.discoveredDevicesLock) {
+            final int count = discoveryThread.discoveredDevices.size();
+            if( count > 0 ) {
+                out.append("\n");
+                for(final Iterator<BluetoothDevice> iter=discoveryThread.discoveredDevices.iterator(); iter.hasNext(); ) {
+                    final BluetoothDevice device = iter.next();
+                    out.append("  ").append(device.toString()).append("\n");
+                }
+            }
+        }
+        return out.toString();
+    }
+
+    /* property accessors: */
+
+    @Override
+    public String getAlias() { throw new UnsupportedOperationException(); } // FIXME
+
+    @Override
+    public void setAlias(final String value) { throw new UnsupportedOperationException(); } // FIXME
+
+    @Override
+    public long getBluetoothClass() { throw new UnsupportedOperationException(); } // FIXME
+
+    @Override
+    public native boolean getPowered();
+
+    @Override
+    public native void enablePoweredNotifications(BluetoothNotification<Boolean> callback);
+
+    @Override
+    public native void disablePoweredNotifications();
+
+    @Override
+    public native void setPowered(boolean value);
+
+    @Override
+    public native boolean getDiscoverable();
+
+    @Override
+    public native void enableDiscoverableNotifications(BluetoothNotification<Boolean> callback);
+
+    @Override
+    public native void disableDiscoverableNotifications();
+
+    @Override
+    public native void setDiscoverable(boolean value);
+
+    @Override
+    public native long getDiscoverableTimeout();
+
+    @Override
+    public native void setDiscoverableTimout(long value);
+
+    @Override
+    public native BluetoothDevice connectDevice(String address, String addressType);
+
+    @Override
+    public native boolean getPairable();
+
+    @Override
+    public native void enablePairableNotifications(BluetoothNotification<Boolean> callback);
+
+    @Override
+    public native void disablePairableNotifications();
+
+    @Override
+    public native void setPairable(boolean value);
+
+    @Override
+    public native long getPairableTimeout();
+
+    @Override
+    public native void setPairableTimeout(long value);
+
+    @Override
+    public native String[] getUUIDs();
+
+    @Override
+    public native String getModalias();
+
+    /* internal */
+
+    private native void initImpl(final BluetoothDeviceDiscoveryListener l);
+
+    @Override
+    protected native void deleteImpl();
+
+    /* discovery */
+
+    @Override
+    public boolean startDiscovery() throws BluetoothException {
+        return discoveryThread.doDiscovery(true);
+    }
+    private native boolean startDiscoveryImpl() throws BluetoothException;
+
+    @Override
+    public boolean stopDiscovery() throws BluetoothException {
+        return discoveryThread.doDiscovery(false);
+    }
+    private native boolean stopDiscoveryImpl() throws BluetoothException;
+
+    @Override
+    public List<BluetoothDevice> getDevices() {
+        return discoveryThread.getDiscoveredDevices();
+    }
+
+    @Override
+    public int removeDevices() throws BluetoothException {
+        final int cj = discoveryThread.removeDiscoveredDevices();
+        final int cn = removeDevicesImpl();
+        if( cj != cn ) {
+            throw new InternalError("Inconsistent discovered device count: Native "+cn+", callback "+cj);
+        }
+        return cn;
+    }
+    private native int removeDevicesImpl() throws BluetoothException;
+
+    @Override
+    public boolean getDiscovering() { return discoveryThread.running && discoveryThread.doDiscovery; }
+
+    @Override
+    public void setDeviceDiscoveryListener(final BluetoothDeviceDiscoveryListener l) {
+        discoveryThread.setDeviceDiscoveryListener(l);
+    }
+
+    @Override
+    public void enableDiscoveringNotifications(final BluetoothNotification<Boolean> callback) {
+        discoveryThread.setDiscoveringNotificationCallback(callback);
+    }
+
+    @Override
+    public void disableDiscoveringNotifications() {
+        discoveryThread.setDiscoveringNotificationCallback(null);
+    }
+
+    @Override
+    public void setDiscoveryFilter(final List<UUID> uuids, final int rssi, final int pathloss, final TransportType transportType) {
+        final List<String> uuidsFmt = new ArrayList<>(uuids.size());
+        for (final UUID uuid : uuids) {
+            uuidsFmt.add(uuid.toString());
+        }
+        setDiscoveryFilter(uuidsFmt, rssi, pathloss, transportType.ordinal());
+    }
+
+    public void setRssiDiscoveryFilter(final int rssi) {
+        setDiscoveryFilter(Collections.EMPTY_LIST, rssi, 0, TransportType.AUTO);
+    }
+
+    private native void setDiscoveryFilter(List<String> uuids, int rssi, int pathloss, int transportType);
+
+    private native int discoverAnyDeviceImpl(final int timeoutMS) throws BluetoothException;
+    // std::vector<std::shared_ptr<direct_bt::HCIDevice>> discoveredDevices = adapter.getDiscoveredDevices();
+    private native List<BluetoothDevice> getDiscoveredDevicesImpl();
+
+    private class DiscoveryThread implements Runnable {
+        private int instanceID=-1;
+
+        private volatile boolean running = false;
+        private volatile boolean doDiscovery = false;
+        private final Object stateLock = new Object();
+        private volatile BluetoothDeviceDiscoveryListener userDeviceDiscoveryListener = null;
+        private volatile BluetoothNotification<Boolean> discoveringNotificationCB = null;
+        private List<BluetoothDevice> discoveredDevices = new ArrayList<BluetoothDevice>();
+        private final Object discoveredDevicesLock = new Object();
+
+        private final BluetoothDeviceDiscoveryListener deviceDiscoveryListener = new BluetoothDeviceDiscoveryListener() {
+            @Override
+            public void deviceAdded(final BluetoothAdapter a, final BluetoothDevice device) {
+                final BluetoothDeviceDiscoveryListener l = userDeviceDiscoveryListener;
+                System.err.println("DBTAdapter.DeviceDiscoveryListener.added: "+device+" on "+a);
+                synchronized(discoveredDevicesLock) {
+                    discoveredDevices.add(device);
+                }
+                if( null != l ) {
+                    l.deviceAdded(a, device);
+                }
+            }
+
+            @Override
+            public void deviceUpdated(final BluetoothAdapter a, final BluetoothDevice device) {
+                System.err.println("DBTAdapter.DeviceDiscoveryListener.updated: "+device+" on "+a);
+                // nop on discoveredDevices
+                userDeviceDiscoveryListener.deviceUpdated(a, device);
+            }
+
+            @Override
+            public void deviceRemoved(final BluetoothAdapter a, final BluetoothDevice device) {
+                final BluetoothDeviceDiscoveryListener l = userDeviceDiscoveryListener;
+                System.err.println("DBTAdapter.DeviceDiscoveryListener.removed: "+device+" on "+a);
+                synchronized(discoveredDevicesLock) {
+                    discoveredDevices.remove(device);
+                }
+                if( null != l ) {
+                    l.deviceRemoved(a, device);
+                }
+            }
+        };
+
+        public void start(final ThreadGroup tg) {
+            synchronized( stateLock ) {
+                if ( !running ) {
+                    instanceID = globThreadID.addAndGet(1);
+                    final Thread t = new Thread(tg, this, "Adapter-"+instanceID); // Thread name aligned w/ 'Thread-#'
+                    t.setDaemon(true);
+                    t.start();
+                    while( !running ) {
+                        try {
+                            stateLock.wait();
+                        } catch (final InterruptedException e) {
+                            e.printStackTrace();
+                        }
+                    }
+                }
+            }
+        }
+        public void setDeviceDiscoveryListener(final BluetoothDeviceDiscoveryListener l) {
+            synchronized( stateLock ) {
+                userDeviceDiscoveryListener = l;
+                stateLock.notifyAll();
+            }
+        }
+        public void setDiscoveringNotificationCallback(final BluetoothNotification<Boolean> cb) {
+            synchronized( stateLock ) {
+                discoveringNotificationCB = cb;
+                stateLock.notifyAll();
+            }
+        }
+        public List<BluetoothDevice> getDiscoveredDevices() {
+            synchronized(discoveredDevicesLock) {
+                return new ArrayList<BluetoothDevice>(discoveredDevices);
+            }
+        }
+        public int removeDiscoveredDevices() {
+            synchronized(discoveredDevicesLock) {
+                final int n = discoveredDevices.size();
+                discoveredDevices = new ArrayList<BluetoothDevice>();
+                return n;
+            }
+        }
+        public boolean doDiscovery(final boolean v) {
+            synchronized( stateLock ) {
+                if( v == doDiscovery ) {
+                    return v;
+                }
+                final BluetoothNotification<Boolean> cb = discoveringNotificationCB;
+                final boolean enable;
+                if( v ) {
+                    enable = startDiscoveryImpl();
+                } else {
+                    enable = false;
+                    stopDiscoveryImpl();
+                }
+                doDiscovery = enable;
+                if( null != cb ) {
+                    cb.run(enable);
+                }
+                stateLock.notifyAll();
+                return enable;
+            }
+        }
+        public void stop() {
+            synchronized( stateLock ) {
+                stopDiscoveryImpl();
+                running = false;
+                doDiscovery = false;
+                stateLock.notifyAll();
+            }
+        }
+
+        @Override
+        public void run() {
+            synchronized( stateLock ) {
+                running = true;
+                stateLock.notifyAll();
+            }
+            while (running) {
+                synchronized( stateLock ) {
+                    while( running && !doDiscovery ) {
+                        try {
+                            stateLock.wait();
+                        } catch (final InterruptedException e) {
+                            e.printStackTrace();
+                        }
+                    }
+                }
+                if( !running ) {
+                    break; // end loop and thread
+                }
+
+                try {
+                    if( doDiscovery ) {
+                        // will trigger all discovery callbacks!
+                        discoverAnyDeviceImpl(discoverTimeoutMS);
+                    }
+                } catch (final Exception e) {
+                    System.err.println(e.toString());
+                    e.printStackTrace();
+                    doDiscovery = false;
+                }
+            } // loop
+
+            instanceID = -1;
+        }
+    }
+    private static AtomicInteger globThreadID = new AtomicInteger(0);
+    private static int discoverTimeoutMS = 100;
+}