479 lines
18 KiB
Java
479 lines
18 KiB
Java
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/*
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* Copyright (C) 2014 The Android Open Source Project
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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.NonNull;
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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.bluetooth.annotations.RequiresBluetoothConnectPermission;
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import android.bluetooth.annotations.RequiresLegacyBluetoothAdminPermission;
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import android.bluetooth.annotations.RequiresLegacyBluetoothPermission;
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import android.compat.annotation.UnsupportedAppUsage;
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import android.content.AttributionSource;
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import android.content.Context;
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import android.os.Build;
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import android.os.IBinder;
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import android.os.RemoteException;
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import android.util.Log;
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import java.util.Collections;
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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 A2DP Sink profile.
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*
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* <p>BluetoothA2dpSink is a proxy object for controlling the Bluetooth A2DP Sink Service via IPC.
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* Use {@link BluetoothAdapter#getProfileProxy} to get the BluetoothA2dpSink proxy object.
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*
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* @hide
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*/
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@SystemApi
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public final class BluetoothA2dpSink implements BluetoothProfile {
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private static final String TAG = "BluetoothA2dpSink";
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private static final boolean DBG = true;
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private static final boolean VDBG = false;
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/**
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* Intent used to broadcast the change in connection state of the A2DP Sink profile.
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*
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* <p>This intent will have 3 extras:
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*
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* <ul>
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* <li>{@link #EXTRA_STATE} - The current state of the profile.
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* <li>{@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.
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* <li>{@link BluetoothDevice#EXTRA_DEVICE} - The remote device.
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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 {@link
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* #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, {@link #STATE_CONNECTED}, {@link
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* #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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@RequiresBluetoothConnectPermission
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@RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
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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.a2dp-sink.profile.action.CONNECTION_STATE_CHANGED";
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private final BluetoothAdapter mAdapter;
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private final AttributionSource mAttributionSource;
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private IBluetoothA2dpSink mService;
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/**
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* Create a BluetoothA2dp proxy object for interacting with the local Bluetooth A2DP service.
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*/
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/* package */ BluetoothA2dpSink(Context context, BluetoothAdapter adapter) {
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mAdapter = adapter;
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mAttributionSource = adapter.getAttributionSource();
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mService = null;
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}
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/** @hide */
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@Override
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public void onServiceConnected(IBinder service) {
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mService = IBluetoothA2dpSink.Stub.asInterface(service);
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}
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/** @hide */
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@Override
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public void onServiceDisconnected() {
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mService = null;
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}
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private IBluetoothA2dpSink getService() {
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return mService;
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}
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/** @hide */
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@Override
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public BluetoothAdapter getAdapter() {
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return mAdapter;
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}
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@Override
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@SuppressWarnings("Finalize") // empty finalize for api signature
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public void finalize() {}
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/**
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* Initiate connection to a profile of the remote bluetooth device.
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*
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* <p>Currently, the system supports only 1 connection to the A2DP profile. The API will
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* automatically disconnect connected devices before connecting.
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*
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* <p>This API returns false in scenarios like the profile on the device is already connected or
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* Bluetooth is not turned on. When this API returns true, it is guaranteed that connection
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* state intent for the profile will be broadcasted with the state. Users can get the connection
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* state of the profile from this intent.
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*
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* @param device Remote Bluetooth Device
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* @return false on immediate error, true otherwise
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* @hide
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(
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allOf = {
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android.Manifest.permission.BLUETOOTH_CONNECT,
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android.Manifest.permission.BLUETOOTH_PRIVILEGED,
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})
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public boolean connect(BluetoothDevice device) {
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if (DBG) log("connect(" + device + ")");
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final IBluetoothA2dpSink service = getService();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled() && isValidDevice(device)) {
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try {
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return service.connect(device, mAttributionSource);
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} catch (RemoteException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return false;
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}
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/**
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* Initiate disconnection from a profile
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*
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* <p>This API will return false in scenarios like the profile on the Bluetooth device is not in
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* connected state etc. When this API returns, true, it is guaranteed that the connection state
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* change intent will be broadcasted with the state. Users can get the disconnection state of
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* the profile from this intent.
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*
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* <p>If the disconnection is initiated by a remote device, the state will transition from
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* {@link #STATE_CONNECTED} to {@link #STATE_DISCONNECTED}. If the disconnect is initiated by
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* the host (local) device the state will transition from {@link #STATE_CONNECTED} to state
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* {@link #STATE_DISCONNECTING} to state {@link #STATE_DISCONNECTED}. The transition to {@link
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* #STATE_DISCONNECTING} can be used to distinguish between the two scenarios.
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*
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* @param device Remote Bluetooth Device
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* @return false on immediate error, true otherwise
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* @hide
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*/
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@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
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@RequiresLegacyBluetoothAdminPermission
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public boolean disconnect(BluetoothDevice device) {
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if (DBG) log("disconnect(" + device + ")");
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final IBluetoothA2dpSink service = getService();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled() && isValidDevice(device)) {
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try {
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return service.disconnect(device, mAttributionSource);
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} catch (RemoteException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return false;
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}
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/**
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* {@inheritDoc}
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*
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* @hide
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*/
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@Override
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public List<BluetoothDevice> getConnectedDevices() {
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if (VDBG) log("getConnectedDevices()");
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final IBluetoothA2dpSink service = getService();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled()) {
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try {
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return Attributable.setAttributionSource(
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service.getConnectedDevices(mAttributionSource), mAttributionSource);
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} catch (RemoteException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return Collections.emptyList();
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}
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/**
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* {@inheritDoc}
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*
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* @hide
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*/
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@Override
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
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if (VDBG) log("getDevicesMatchingStates()");
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final IBluetoothA2dpSink service = getService();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled()) {
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try {
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return Attributable.setAttributionSource(
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service.getDevicesMatchingConnectionStates(states, mAttributionSource),
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mAttributionSource);
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} catch (RemoteException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return Collections.emptyList();
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}
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/**
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* {@inheritDoc}
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*
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* @hide
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*/
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@Override
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public int getConnectionState(BluetoothDevice device) {
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if (VDBG) log("getConnectionState(" + device + ")");
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final IBluetoothA2dpSink service = getService();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled() && isValidDevice(device)) {
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try {
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return service.getConnectionState(device, mAttributionSource);
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} catch (RemoteException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return BluetoothProfile.STATE_DISCONNECTED;
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}
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/**
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* Get the current audio configuration for the A2DP source device, or null if the device has no
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* audio configuration
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*
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* @param device Remote bluetooth device.
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* @return audio configuration for the device, or null
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* @see BluetoothAudioConfig
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* @hide
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*/
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@RequiresLegacyBluetoothPermission
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public BluetoothAudioConfig getAudioConfig(BluetoothDevice device) {
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if (VDBG) log("getAudioConfig(" + device + ")");
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final IBluetoothA2dpSink service = getService();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled() && isValidDevice(device)) {
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try {
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return service.getAudioConfig(device, mAttributionSource);
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} catch (RemoteException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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return null;
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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. Priority can be one of {@link #PRIORITY_ON} or {@link
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* #PRIORITY_OFF}
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*
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* @param device Paired bluetooth device
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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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@RequiresBluetoothConnectPermission
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@RequiresPermission(
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allOf = {
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android.Manifest.permission.BLUETOOTH_CONNECT,
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android.Manifest.permission.BLUETOOTH_PRIVILEGED,
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})
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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. Connection policy can be one of {@link
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* #CONNECTION_POLICY_ALLOWED}, {@link #CONNECTION_POLICY_FORBIDDEN}, {@link
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* #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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@RequiresBluetoothConnectPermission
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@RequiresPermission(
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allOf = {
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android.Manifest.permission.BLUETOOTH_CONNECT,
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android.Manifest.permission.BLUETOOTH_PRIVILEGED
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})
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public boolean setConnectionPolicy(
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@NonNull BluetoothDevice device, @ConnectionPolicy int connectionPolicy) {
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if (DBG) log("setConnectionPolicy(" + device + ", " + connectionPolicy + ")");
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final IBluetoothA2dpSink service = getService();
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if (service == null) {
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Log.w(TAG, "Proxy not attached to service");
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if (DBG) log(Log.getStackTraceString(new Throwable()));
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} else if (isEnabled()
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&& isValidDevice(device)
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&& (connectionPolicy == BluetoothProfile.CONNECTION_POLICY_FORBIDDEN
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|| connectionPolicy == BluetoothProfile.CONNECTION_POLICY_ALLOWED)) {
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try {
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return service.setConnectionPolicy(device, connectionPolicy, mAttributionSource);
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} catch (RemoteException e) {
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Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
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}
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}
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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: {@link #PRIORITY_OFF}, {@link #PRIORITY_ON}, {@link
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* #PRIORITY_UNDEFINED}
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*
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|
* @param device Bluetooth device
|
||
|
|
* @return priority of the device
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
@RequiresBluetoothConnectPermission
|
||
|
|
@RequiresPermission(
|
||
|
|
allOf = {
|
||
|
|
android.Manifest.permission.BLUETOOTH_CONNECT,
|
||
|
|
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
|
||
|
|
})
|
||
|
|
public int getPriority(BluetoothDevice device) {
|
||
|
|
if (VDBG) log("getPriority(" + device + ")");
|
||
|
|
return BluetoothAdapter.connectionPolicyToPriority(getConnectionPolicy(device));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the connection policy of the profile.
|
||
|
|
*
|
||
|
|
* <p>The connection policy can be any of: {@link #CONNECTION_POLICY_ALLOWED}, {@link
|
||
|
|
* #CONNECTION_POLICY_FORBIDDEN}, {@link #CONNECTION_POLICY_UNKNOWN}
|
||
|
|
*
|
||
|
|
* @param device Bluetooth device
|
||
|
|
* @return connection policy of the device
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
@SystemApi
|
||
|
|
@RequiresBluetoothConnectPermission
|
||
|
|
@RequiresPermission(
|
||
|
|
allOf = {
|
||
|
|
android.Manifest.permission.BLUETOOTH_CONNECT,
|
||
|
|
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
|
||
|
|
})
|
||
|
|
public @ConnectionPolicy int getConnectionPolicy(@NonNull BluetoothDevice device) {
|
||
|
|
if (VDBG) log("getConnectionPolicy(" + device + ")");
|
||
|
|
final IBluetoothA2dpSink service = getService();
|
||
|
|
if (service == null) {
|
||
|
|
Log.w(TAG, "Proxy not attached to service");
|
||
|
|
if (DBG) log(Log.getStackTraceString(new Throwable()));
|
||
|
|
} else if (isEnabled() && isValidDevice(device)) {
|
||
|
|
try {
|
||
|
|
return service.getConnectionPolicy(device, mAttributionSource);
|
||
|
|
} catch (RemoteException e) {
|
||
|
|
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if audio is playing on the bluetooth device (A2DP profile is streaming music).
|
||
|
|
*
|
||
|
|
* @param device BluetoothDevice device
|
||
|
|
* @return true if audio is playing (A2dp is streaming music), false otherwise
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
@SystemApi
|
||
|
|
@RequiresBluetoothConnectPermission
|
||
|
|
@RequiresPermission(
|
||
|
|
allOf = {
|
||
|
|
android.Manifest.permission.BLUETOOTH_CONNECT,
|
||
|
|
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
|
||
|
|
})
|
||
|
|
public boolean isAudioPlaying(@NonNull BluetoothDevice device) {
|
||
|
|
if (VDBG) log("isAudioPlaying(" + device + ")");
|
||
|
|
final IBluetoothA2dpSink service = getService();
|
||
|
|
if (service == null) {
|
||
|
|
Log.w(TAG, "Proxy not attached to service");
|
||
|
|
if (DBG) log(Log.getStackTraceString(new Throwable()));
|
||
|
|
} else if (isEnabled() && isValidDevice(device)) {
|
||
|
|
try {
|
||
|
|
return service.isA2dpPlaying(device, mAttributionSource);
|
||
|
|
} catch (RemoteException e) {
|
||
|
|
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Helper for converting a state to a string.
|
||
|
|
*
|
||
|
|
* <p>For debug use only - strings are not internationalized.
|
||
|
|
*
|
||
|
|
* @hide
|
||
|
|
*/
|
||
|
|
public static String stateToString(int state) {
|
||
|
|
switch (state) {
|
||
|
|
case STATE_DISCONNECTED:
|
||
|
|
return "disconnected";
|
||
|
|
case STATE_CONNECTING:
|
||
|
|
return "connecting";
|
||
|
|
case STATE_CONNECTED:
|
||
|
|
return "connected";
|
||
|
|
case STATE_DISCONNECTING:
|
||
|
|
return "disconnecting";
|
||
|
|
case BluetoothA2dp.STATE_PLAYING:
|
||
|
|
return "playing";
|
||
|
|
case BluetoothA2dp.STATE_NOT_PLAYING:
|
||
|
|
return "not playing";
|
||
|
|
default:
|
||
|
|
return "<unknown state " + state + ">";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private boolean isEnabled() {
|
||
|
|
return mAdapter.getState() == BluetoothAdapter.STATE_ON;
|
||
|
|
}
|
||
|
|
|
||
|
|
private static boolean isValidDevice(BluetoothDevice device) {
|
||
|
|
return device != null && BluetoothAdapter.checkBluetoothAddress(device.getAddress());
|
||
|
|
}
|
||
|
|
|
||
|
|
private static void log(String msg) {
|
||
|
|
Log.d(TAG, msg);
|
||
|
|
}
|
||
|
|
}
|