278 lines
10 KiB
Java
278 lines
10 KiB
Java
/*
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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.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.bluetooth.annotations.RequiresBluetoothConnectPermission;
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import android.bluetooth.annotations.RequiresLegacyBluetoothPermission;
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import android.content.AttributionSource;
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import android.content.Context;
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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 AVRCP Controller. It currently
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* supports player information, playback support and track metadata.
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*
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* <p>BluetoothAvrcpController is a proxy object for controlling the Bluetooth AVRCP Service via
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* IPC. Use {@link BluetoothAdapter#getProfileProxy} to get the BluetoothAvrcpController proxy
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* object.
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*
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* @hide
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*/
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public final class BluetoothAvrcpController implements BluetoothProfile {
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private static final String TAG = "BluetoothAvrcpController";
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private static final boolean DBG = false;
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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 AVRCP Controller 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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@RequiresLegacyBluetoothPermission
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.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.avrcp-controller.profile.action.CONNECTION_STATE_CHANGED";
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/**
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* Intent used to broadcast the change in player application setting state on AVRCP AG.
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*
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* <p>This intent will have the following extras:
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*
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* <ul>
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* <li>{@link #EXTRA_PLAYER_SETTING} - {@link BluetoothAvrcpPlayerSettings} containing the
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* most recent player setting.
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* </ul>
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
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public static final String ACTION_PLAYER_SETTING =
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"android.bluetooth.avrcp-controller.profile.action.PLAYER_SETTING";
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public static final String EXTRA_PLAYER_SETTING =
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"android.bluetooth.avrcp-controller.profile.extra.PLAYER_SETTING";
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private final BluetoothAdapter mAdapter;
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private final AttributionSource mAttributionSource;
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private IBluetoothAvrcpController mService;
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/**
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* Create a BluetoothAvrcpController proxy object for interacting with the local Bluetooth AVRCP
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* service.
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*/
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/* package */ BluetoothAvrcpController(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 = IBluetoothAvrcpController.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 IBluetoothAvrcpController 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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/** {@inheritDoc} */
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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 IBluetoothAvrcpController 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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/** {@inheritDoc} */
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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 IBluetoothAvrcpController 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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/** {@inheritDoc} */
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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("getState(" + device + ")");
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final IBluetoothAvrcpController 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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* Gets the player application settings.
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*
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* @return the {@link BluetoothAvrcpPlayerSettings} or {@code null} if there is an error.
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public BluetoothAvrcpPlayerSettings getPlayerSettings(BluetoothDevice device) {
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if (DBG) Log.d(TAG, "getPlayerSettings");
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final IBluetoothAvrcpController 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 service.getPlayerSettings(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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* Sets the player app setting for current player. returns true in case setting is supported by
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* remote, false otherwise
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public boolean setPlayerApplicationSetting(BluetoothAvrcpPlayerSettings plAppSetting) {
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if (DBG) Log.d(TAG, "setPlayerApplicationSetting");
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final IBluetoothAvrcpController 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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service.setPlayerApplicationSetting(plAppSetting, 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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* Send Group Navigation Command to Remote. possible keycode values: next_grp, previous_grp
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* defined above
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public void sendGroupNavigationCmd(BluetoothDevice device, int keyCode, int keyState) {
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Log.d(
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TAG,
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"sendGroupNavigationCmd dev = "
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+ device
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+ " key "
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+ keyCode
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+ " State = "
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+ keyState);
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final IBluetoothAvrcpController 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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service.sendGroupNavigationCmd(device, keyCode, keyState, 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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}
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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(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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