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@@ -1,320 +0,0 @@
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/*
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* Copyright 2021 HIMSA II K/S - www.himsa.com.
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* Represented by EHIMA - www.ehima.com
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.bluetooth;
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import android.Manifest;
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import android.annotation.IntRange;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import android.annotation.RequiresPermission;
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import android.annotation.SdkConstant;
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import android.annotation.SdkConstant.SdkConstantType;
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import android.annotation.SuppressLint;
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import android.annotation.SystemApi;
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import android.compat.annotation.UnsupportedAppUsage;
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import android.content.Context;
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import android.os.Binder;
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import android.os.IBinder;
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import android.os.RemoteException;
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import android.util.CloseGuard;
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import android.util.Log;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* This class provides the public APIs to control the Bluetooth Volume Control service.
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*
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* <p>BluetoothVolumeControl is a proxy object for controlling the Bluetooth VC
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* Service via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get
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* the BluetoothVolumeControl proxy object.
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* @hide
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*/
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@SystemApi
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public final class BluetoothVolumeControl implements BluetoothProfile, AutoCloseable {
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private static final String TAG = "BluetoothVolumeControl";
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private static final boolean DBG = true;
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private static final boolean VDBG = false;
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private CloseGuard mCloseGuard;
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/**
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* Intent used to broadcast the change in connection state of the Volume Control
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* profile.
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*
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* <p>This intent will have 3 extras:
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* <ul>
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* <li> {@link #EXTRA_STATE} - The current state of the profile. </li>
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* <li> {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.</li>
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* <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. </li>
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* </ul>
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*
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* <p>{@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of
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* {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING},
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* {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}.
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*
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* @hide
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*/
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@SystemApi
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@SuppressLint("ActionValue")
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
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@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
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public static final String ACTION_CONNECTION_STATE_CHANGED =
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"android.bluetooth.volume-control.profile.action.CONNECTION_STATE_CHANGED";
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private BluetoothAdapter mAdapter;
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private final BluetoothProfileConnector<IBluetoothVolumeControl> mProfileConnector =
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new BluetoothProfileConnector(this, BluetoothProfile.VOLUME_CONTROL, TAG,
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IBluetoothVolumeControl.class.getName()) {
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@Override
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public IBluetoothVolumeControl getServiceInterface(IBinder service) {
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return IBluetoothVolumeControl.Stub.asInterface(Binder.allowBlocking(service));
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}
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};
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/**
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* Create a BluetoothVolumeControl proxy object for interacting with the local
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* Bluetooth Volume Control service.
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*/
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/*package*/ BluetoothVolumeControl(Context context, ServiceListener listener,
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BluetoothAdapter adapter) {
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mAdapter = adapter;
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mProfileConnector.connect(context, listener);
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mCloseGuard = new CloseGuard();
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mCloseGuard.open("close");
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}
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@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
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protected void finalize() {
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if (mCloseGuard != null) {
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mCloseGuard.warnIfOpen();
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}
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close();
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}
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/*package*/
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@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
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public void close() {
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mProfileConnector.disconnect();
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}
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private IBluetoothVolumeControl getService() { return mProfileConnector.getService(); }
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/**
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* Get the list of connected devices. Currently at most one.
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*
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* @return list of connected devices
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*
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* @hide
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*/
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@SystemApi
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
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public @NonNull List<BluetoothDevice> getConnectedDevices() {
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if (DBG) log("getConnectedDevices()");
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final IBluetoothVolumeControl service = getService();
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if (service != null && isEnabled()) {
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try {
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return service.getConnectedDevices();
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return new ArrayList<BluetoothDevice>();
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}
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}
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if (service == null) Log.w(TAG, "Proxy not attached to service");
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return new ArrayList<BluetoothDevice>();
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}
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/**
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* Get the list of devices matching specified states. Currently at most one.
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*
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* @return list of matching devices
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*
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* @hide
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*/
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
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public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
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if (DBG) log("getDevicesMatchingStates()");
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final IBluetoothVolumeControl service = getService();
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if (service != null && isEnabled()) {
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try {
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return service.getDevicesMatchingConnectionStates(states);
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return new ArrayList<BluetoothDevice>();
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}
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}
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if (service == null) Log.w(TAG, "Proxy not attached to service");
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return new ArrayList<BluetoothDevice>();
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}
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/**
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* Get connection state of device
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*
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* @return device connection state
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*
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* @hide
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*/
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
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public int getConnectionState(BluetoothDevice device) {
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if (DBG) log("getConnectionState(" + device + ")");
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final IBluetoothVolumeControl service = getService();
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if (service != null && isEnabled() && isValidDevice(device)) {
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try {
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return service.getConnectionState(device);
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return BluetoothProfile.STATE_DISCONNECTED;
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}
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}
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if (service == null) Log.w(TAG, "Proxy not attached to service");
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return BluetoothProfile.STATE_DISCONNECTED;
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}
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/**
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* Tells remote device to set an absolute volume.
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*
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* @param volume Absolute volume to be set on remote device.
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* Minimum value is 0 and maximum value is 255
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* @hide
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*/
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@SystemApi
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
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public void setVolume(@Nullable BluetoothDevice device,
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@IntRange(from = 0, to = 255) int volume) {
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if (DBG)
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log("setVolume(" + volume + ")");
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final IBluetoothVolumeControl service = getService();
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try {
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if (service != null && isEnabled()) {
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service.setVolume(device, volume);
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return;
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}
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if (service == null)
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Log.w(TAG, "Proxy not attached to service");
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} catch (RemoteException e) {
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Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
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}
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}
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/**
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* Set priority of the profile
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*
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* <p> The device should already be paired.
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* Priority can be one of {@link #PRIORITY_ON} or {@link #PRIORITY_OFF},
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*
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* @param device Paired bluetooth device
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* @param priority
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* @return true if priority is set, false on error
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* @hide
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*/
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
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public boolean setPriority(BluetoothDevice device, int priority) {
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if (DBG) log("setPriority(" + device + ", " + priority + ")");
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return setConnectionPolicy(device, BluetoothAdapter.priorityToConnectionPolicy(priority));
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}
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/**
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* Set connection policy of the profile
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*
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* <p> The device should already be paired.
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* Connection policy can be one of {@link #CONNECTION_POLICY_ALLOWED},
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* {@link #CONNECTION_POLICY_FORBIDDEN}, {@link #CONNECTION_POLICY_UNKNOWN}
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*
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* @param device Paired bluetooth device
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* @param connectionPolicy is the connection policy to set to for this profile
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* @return true if connectionPolicy is set, false on error
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* @hide
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*/
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@SystemApi
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
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public boolean setConnectionPolicy(@NonNull BluetoothDevice device,
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@ConnectionPolicy int connectionPolicy) {
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if (DBG) log("setConnectionPolicy(" + device + ", " + connectionPolicy + ")");
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final IBluetoothVolumeControl service = getService();
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if (service != null && isEnabled() && isValidDevice(device)) {
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if (connectionPolicy != BluetoothProfile.CONNECTION_POLICY_FORBIDDEN
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&& connectionPolicy != BluetoothProfile.CONNECTION_POLICY_ALLOWED) {
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return false;
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}
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try {
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return service.setConnectionPolicy(device, connectionPolicy);
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return false;
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}
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}
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if (service == null) Log.w(TAG, "Proxy not attached to service");
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return false;
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}
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/**
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* Get the priority of the profile.
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*
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* <p> The priority can be any of:
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* {@link #PRIORITY_OFF}, {@link #PRIORITY_ON}, {@link #PRIORITY_UNDEFINED}
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*
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* @param device Bluetooth device
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* @return priority of the device
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* @hide
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*/
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
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public int getPriority(BluetoothDevice device) {
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if (VDBG) log("getPriority(" + device + ")");
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return BluetoothAdapter.connectionPolicyToPriority(getConnectionPolicy(device));
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}
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/**
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* Get the connection policy of the profile.
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*
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* <p> The connection policy can be any of:
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* {@link #CONNECTION_POLICY_ALLOWED}, {@link #CONNECTION_POLICY_FORBIDDEN},
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* {@link #CONNECTION_POLICY_UNKNOWN}
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*
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* @param device Bluetooth device
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* @return connection policy of the device
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* @hide
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*/
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@SystemApi
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
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public @ConnectionPolicy int getConnectionPolicy(@NonNull BluetoothDevice device) {
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if (VDBG) log("getConnectionPolicy(" + device + ")");
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final IBluetoothVolumeControl service = getService();
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if (service != null && isEnabled() && isValidDevice(device)) {
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try {
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return service.getConnectionPolicy(device);
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} catch (RemoteException e) {
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Log.e(TAG, Log.getStackTraceString(new Throwable()));
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return BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
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}
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}
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if (service == null) Log.w(TAG, "Proxy not attached to service");
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return BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
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}
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private boolean isEnabled() {
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return mAdapter.getState() == BluetoothAdapter.STATE_ON;
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}
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private static boolean isValidDevice(@Nullable BluetoothDevice device) {
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return device != null && BluetoothAdapter.checkBluetoothAddress(device.getAddress());
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}
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private static void log(String msg) {
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Log.d(TAG, msg);
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}
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}
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Jakub Pawlowski