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script-astra/Android/Sdk/sources/android-35/android/bluetooth/BluetoothLeAudio.java

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/*
* Copyright 2020 HIMSA II K/S - www.himsa.com.
* Represented by EHIMA - www.ehima.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.bluetooth;
import android.annotation.CallbackExecutor;
import android.annotation.FlaggedApi;
import android.annotation.IntDef;
import android.annotation.IntRange;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.RequiresPermission;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.annotation.SuppressLint;
import android.annotation.SystemApi;
import android.bluetooth.annotations.RequiresBluetoothConnectPermission;
import android.bluetooth.annotations.RequiresLegacyBluetoothPermission;
import android.content.AttributionSource;
import android.content.Context;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.CloseGuard;
import android.util.Log;
import com.android.bluetooth.flags.Flags;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.Executor;
/**
* This class provides the public APIs to control the LeAudio profile.
*
* <p>BluetoothLeAudio is a proxy object for controlling the Bluetooth LE Audio Service via IPC. Use
* {@link BluetoothAdapter#getProfileProxy} to get the BluetoothLeAudio proxy object.
*
* <p>Android only supports one set of connected Bluetooth LeAudio device at a time. Each method is
* protected with its appropriate permission.
*/
public final class BluetoothLeAudio implements BluetoothProfile, AutoCloseable {
private static final String TAG = "BluetoothLeAudio";
private static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
private static final boolean VDBG = false;
private final Map<Callback, Executor> mCallbackExecutorMap = new HashMap<>();
private CloseGuard mCloseGuard;
/**
* This class provides a callback that is invoked when audio codec config changes on the remote
* device.
*
* @hide
*/
@SystemApi
public interface Callback {
/** @hide */
@Retention(RetentionPolicy.SOURCE)
@IntDef(
value = {
GROUP_STATUS_ACTIVE,
GROUP_STATUS_INACTIVE,
})
@interface GroupStatus {}
/** @hide */
@Retention(RetentionPolicy.SOURCE)
@IntDef(
value = {
GROUP_STREAM_STATUS_IDLE,
GROUP_STREAM_STATUS_STREAMING,
})
@interface GroupStreamStatus {}
/**
* Callback invoked when callback is registered and when codec config changes on the remote
* device.
*
* @param groupId the group id
* @param status latest codec status for this group
* @hide
*/
@SystemApi
void onCodecConfigChanged(int groupId, @NonNull BluetoothLeAudioCodecStatus status);
/**
* Callback invoked when a device has been added to the group. It usually happens after
* connection or on bluetooth startup if the device is bonded.
*
* @param device the device which is added to the group
* @param groupId the group id
* @hide
*/
@SystemApi
void onGroupNodeAdded(@NonNull BluetoothDevice device, int groupId);
/**
* Callback invoked when a device has been removed from the group. It usually happens when
* device gets unbonded.
*
* @param device the device which is removed from the group
* @param groupId the group id
* @hide
*/
@SystemApi
void onGroupNodeRemoved(@NonNull BluetoothDevice device, int groupId);
/**
* Callback invoked the group's active state changes.
*
* @param groupId the group id
* @param groupStatus active or inactive state.
* @hide
*/
@SystemApi
void onGroupStatusChanged(int groupId, @GroupStatus int groupStatus);
/**
* Callback invoked when the group's stream status changes.
*
* @param groupId the group id
* @param groupStreamStatus streaming or idle state.
* @hide
*/
@FlaggedApi(Flags.FLAG_LEAUDIO_CALLBACK_ON_GROUP_STREAM_STATUS)
@SystemApi
default void onGroupStreamStatusChanged(
int groupId, @GroupStreamStatus int groupStreamStatus) {
if (DBG) {
Log.d(TAG, " onGroupStreamStatusChanged is not implemented.");
}
}
}
@SuppressLint("AndroidFrameworkBluetoothPermission")
private final IBluetoothLeAudioCallback mCallback =
new IBluetoothLeAudioCallback.Stub() {
@Override
public void onCodecConfigChanged(
int groupId, @NonNull BluetoothLeAudioCodecStatus status) {
for (Map.Entry<BluetoothLeAudio.Callback, Executor> callbackExecutorEntry :
mCallbackExecutorMap.entrySet()) {
BluetoothLeAudio.Callback callback = callbackExecutorEntry.getKey();
Executor executor = callbackExecutorEntry.getValue();
executor.execute(() -> callback.onCodecConfigChanged(groupId, status));
}
}
@Override
public void onGroupNodeAdded(@NonNull BluetoothDevice device, int groupId) {
Attributable.setAttributionSource(device, mAttributionSource);
for (Map.Entry<BluetoothLeAudio.Callback, Executor> callbackExecutorEntry :
mCallbackExecutorMap.entrySet()) {
BluetoothLeAudio.Callback callback = callbackExecutorEntry.getKey();
Executor executor = callbackExecutorEntry.getValue();
executor.execute(() -> callback.onGroupNodeAdded(device, groupId));
}
}
@Override
public void onGroupNodeRemoved(@NonNull BluetoothDevice device, int groupId) {
Attributable.setAttributionSource(device, mAttributionSource);
for (Map.Entry<BluetoothLeAudio.Callback, Executor> callbackExecutorEntry :
mCallbackExecutorMap.entrySet()) {
BluetoothLeAudio.Callback callback = callbackExecutorEntry.getKey();
Executor executor = callbackExecutorEntry.getValue();
executor.execute(() -> callback.onGroupNodeRemoved(device, groupId));
}
}
@Override
public void onGroupStatusChanged(int groupId, int groupStatus) {
for (Map.Entry<BluetoothLeAudio.Callback, Executor> callbackExecutorEntry :
mCallbackExecutorMap.entrySet()) {
BluetoothLeAudio.Callback callback = callbackExecutorEntry.getKey();
Executor executor = callbackExecutorEntry.getValue();
executor.execute(() -> callback.onGroupStatusChanged(groupId, groupStatus));
}
}
@Override
public void onGroupStreamStatusChanged(int groupId, int groupStreamStatus) {
if (Flags.leaudioCallbackOnGroupStreamStatus()) {
for (Map.Entry<BluetoothLeAudio.Callback, Executor> callbackExecutorEntry :
mCallbackExecutorMap.entrySet()) {
BluetoothLeAudio.Callback callback = callbackExecutorEntry.getKey();
Executor executor = callbackExecutorEntry.getValue();
executor.execute(
() ->
callback.onGroupStreamStatusChanged(
groupId, groupStreamStatus));
}
}
}
};
/**
* Intent used to broadcast the change in connection state of the LeAudio profile. Please note
* that in the binaural case, there will be two different LE devices for the left and right side
* and each device will have their own connection state changes.
*
* <p>This intent will have 3 extras:
*
* <ul>
* <li>{@link #EXTRA_STATE} - The current state of the profile.
* <li>{@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.
* <li>{@link BluetoothDevice#EXTRA_DEVICE} - The remote device.
* </ul>
*
* <p>{@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of {@link
* #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, {@link #STATE_CONNECTED}, {@link
* #STATE_DISCONNECTING}.
*/
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_LE_AUDIO_CONNECTION_STATE_CHANGED =
"android.bluetooth.action.LE_AUDIO_CONNECTION_STATE_CHANGED";
/**
* Intent used to broadcast the selection of a connected device as active.
*
* <p>This intent will have one extra:
*
* <ul>
* <li>{@link BluetoothDevice#EXTRA_DEVICE} - The remote device. It can be null if no device
* is active.
* </ul>
*
* @hide
*/
@SystemApi
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
})
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_LE_AUDIO_ACTIVE_DEVICE_CHANGED =
"android.bluetooth.action.LE_AUDIO_ACTIVE_DEVICE_CHANGED";
/**
* Indicates invalid/unset audio context.
*
* @hide
*/
public static final int CONTEXT_TYPE_INVALID = 0x0000;
/**
* Indicates unspecified audio content.
*
* @hide
*/
public static final int CONTEXT_TYPE_UNSPECIFIED = 0x0001;
/**
* Indicates conversation between humans as, for example, in telephony or video calls.
*
* @hide
*/
public static final int CONTEXT_TYPE_CONVERSATIONAL = 0x0002;
/**
* Indicates media as, for example, in music, public radio, podcast or video soundtrack.
*
* @hide
*/
public static final int CONTEXT_TYPE_MEDIA = 0x0004;
/**
* Indicates audio associated with a video gaming.
*
* @hide
*/
public static final int CONTEXT_TYPE_GAME = 0x0008;
/**
* Indicates instructional audio as, for example, in navigation, announcements or user guidance.
*
* @hide
*/
public static final int CONTEXT_TYPE_INSTRUCTIONAL = 0x0010;
/**
* Indicates man machine communication as, for example, with voice recognition or virtual
* assistant.
*
* @hide
*/
public static final int CONTEXT_TYPE_VOICE_ASSISTANTS = 0x0020;
/**
* Indicates audio associated with a live audio stream.
*
* @hide
*/
public static final int CONTEXT_TYPE_LIVE = 0x0040;
/**
* Indicates sound effects as, for example, in keyboard, touch feedback; menu and user interface
* sounds, and other system sounds.
*
* @hide
*/
public static final int CONTEXT_TYPE_SOUND_EFFECTS = 0x0080;
/**
* Indicates notification and reminder sounds, attention-seeking audio, for example, in beeps
* signaling the arrival of a message.
*
* @hide
*/
public static final int CONTEXT_TYPE_NOTIFICATIONS = 0x0100;
/**
* Indicates ringtone as in a call alert.
*
* @hide
*/
public static final int CONTEXT_TYPE_RINGTONE = 0x0200;
/**
* Indicates alerts and timers, immediate alerts as, for example, in a low battery alarm, timer
* expiry or alarm clock.
*
* @hide
*/
public static final int CONTEXT_TYPE_ALERTS = 0x0400;
/**
* Indicates emergency alarm as, for example, with fire alarms or other urgent alerts.
*
* @hide
*/
public static final int CONTEXT_TYPE_EMERGENCY_ALARM = 0x0800;
/**
* Indicates all contexts.
*
* @hide
*/
public static final int CONTEXTS_ALL =
CONTEXT_TYPE_UNSPECIFIED
| CONTEXT_TYPE_CONVERSATIONAL
| CONTEXT_TYPE_MEDIA
| CONTEXT_TYPE_GAME
| CONTEXT_TYPE_INSTRUCTIONAL
| CONTEXT_TYPE_VOICE_ASSISTANTS
| CONTEXT_TYPE_LIVE
| CONTEXT_TYPE_SOUND_EFFECTS
| CONTEXT_TYPE_NOTIFICATIONS
| CONTEXT_TYPE_RINGTONE
| CONTEXT_TYPE_ALERTS
| CONTEXT_TYPE_EMERGENCY_ALARM;
/** This represents an invalid group ID. */
public static final int GROUP_ID_INVALID = IBluetoothLeAudio.LE_AUDIO_GROUP_ID_INVALID;
/**
* This represents an invalid audio location.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_INVALID = 0;
/**
* This represents an audio location front left.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_FRONT_LEFT = 0x01 << 0;
/**
* This represents an audio location front right.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_FRONT_RIGHT = 0x01 << 1;
/**
* This represents an audio location front center.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_FRONT_CENTER = 0x01 << 2;
/**
* This represents an audio location low frequency effects 1.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_LOW_FREQ_EFFECTS_ONE = 0x01 << 3;
/**
* This represents an audio location back left.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_BACK_LEFT = 0x01 << 4;
/**
* This represents an audio location back right.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_BACK_RIGHT = 0x01 << 5;
/**
* This represents an audio location front left of center.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_FRONT_LEFT_OF_CENTER = 0x01 << 6;
/**
* This represents an audio location front right of center.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_FRONT_RIGHT_OF_CENTER = 0x01 << 7;
/**
* This represents an audio location back center.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_BACK_CENTER = 0x01 << 8;
/**
* This represents an audio location low frequency effects 2.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_LOW_FREQ_EFFECTS_TWO = 0x01 << 9;
/**
* This represents an audio location side left.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_SIDE_LEFT = 0x01 << 10;
/**
* This represents an audio location side right.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_SIDE_RIGHT = 0x01 << 11;
/**
* This represents an audio location top front left.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_TOP_FRONT_LEFT = 0x01 << 12;
/**
* This represents an audio location top front right.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_TOP_FRONT_RIGHT = 0x01 << 13;
/**
* This represents an audio location top front center.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_TOP_FRONT_CENTER = 0x01 << 14;
/**
* This represents an audio location top center.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_TOP_CENTER = 0x01 << 15;
/**
* This represents an audio location top back left.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_TOP_BACK_LEFT = 0x01 << 16;
/**
* This represents an audio location top back right.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_TOP_BACK_RIGHT = 0x01 << 17;
/**
* This represents an audio location top side left.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_TOP_SIDE_LEFT = 0x01 << 18;
/**
* This represents an audio location top side right.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_TOP_SIDE_RIGHT = 0x01 << 19;
/**
* This represents an audio location top back center.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_TOP_BACK_CENTER = 0x01 << 20;
/**
* This represents an audio location bottom front center.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_BOTTOM_FRONT_CENTER = 0x01 << 21;
/**
* This represents an audio location bottom front left.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_BOTTOM_FRONT_LEFT = 0x01 << 22;
/**
* This represents an audio location bottom front right.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_BOTTOM_FRONT_RIGHT = 0x01 << 23;
/**
* This represents an audio location front left wide.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_FRONT_LEFT_WIDE = 0x01 << 24;
/**
* This represents an audio location front right wide.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_FRONT_RIGHT_WIDE = 0x01 << 25;
/**
* This represents an audio location left surround.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_LEFT_SURROUND = 0x01 << 26;
/**
* This represents an audio location right surround.
*
* @hide
*/
@SystemApi public static final int AUDIO_LOCATION_RIGHT_SURROUND = 0x01 << 27;
/** @hide */
@IntDef(
flag = true,
prefix = "AUDIO_LOCATION_",
value = {
AUDIO_LOCATION_INVALID,
AUDIO_LOCATION_FRONT_LEFT,
AUDIO_LOCATION_FRONT_RIGHT,
AUDIO_LOCATION_FRONT_CENTER,
AUDIO_LOCATION_LOW_FREQ_EFFECTS_ONE,
AUDIO_LOCATION_BACK_LEFT,
AUDIO_LOCATION_BACK_RIGHT,
AUDIO_LOCATION_FRONT_LEFT_OF_CENTER,
AUDIO_LOCATION_FRONT_RIGHT_OF_CENTER,
AUDIO_LOCATION_BACK_CENTER,
AUDIO_LOCATION_LOW_FREQ_EFFECTS_TWO,
AUDIO_LOCATION_SIDE_LEFT,
AUDIO_LOCATION_SIDE_RIGHT,
AUDIO_LOCATION_TOP_FRONT_LEFT,
AUDIO_LOCATION_TOP_FRONT_RIGHT,
AUDIO_LOCATION_TOP_FRONT_CENTER,
AUDIO_LOCATION_TOP_CENTER,
AUDIO_LOCATION_TOP_BACK_LEFT,
AUDIO_LOCATION_TOP_BACK_RIGHT,
AUDIO_LOCATION_TOP_SIDE_LEFT,
AUDIO_LOCATION_TOP_SIDE_RIGHT,
AUDIO_LOCATION_TOP_BACK_CENTER,
AUDIO_LOCATION_BOTTOM_FRONT_CENTER,
AUDIO_LOCATION_BOTTOM_FRONT_LEFT,
AUDIO_LOCATION_BOTTOM_FRONT_RIGHT,
AUDIO_LOCATION_FRONT_LEFT_WIDE,
AUDIO_LOCATION_FRONT_RIGHT_WIDE,
AUDIO_LOCATION_LEFT_SURROUND,
AUDIO_LOCATION_RIGHT_SURROUND,
})
@Retention(RetentionPolicy.SOURCE)
public @interface AudioLocation {}
/**
* Contains group id.
*
* @hide
*/
@SystemApi
public static final String EXTRA_LE_AUDIO_GROUP_ID =
"android.bluetooth.extra.LE_AUDIO_GROUP_ID";
/**
* Contains bit mask for direction, bit 0 set when Sink, bit 1 set when Source.
*
* @hide
*/
public static final String EXTRA_LE_AUDIO_DIRECTION =
"android.bluetooth.extra.LE_AUDIO_DIRECTION";
/**
* Contains source location as per Bluetooth Assigned Numbers
*
* @hide
*/
public static final String EXTRA_LE_AUDIO_SOURCE_LOCATION =
"android.bluetooth.extra.LE_AUDIO_SOURCE_LOCATION";
/**
* Contains sink location as per Bluetooth Assigned Numbers
*
* @hide
*/
public static final String EXTRA_LE_AUDIO_SINK_LOCATION =
"android.bluetooth.extra.LE_AUDIO_SINK_LOCATION";
/**
* Contains available context types for group as per Bluetooth Assigned Numbers
*
* @hide
*/
public static final String EXTRA_LE_AUDIO_AVAILABLE_CONTEXTS =
"android.bluetooth.extra.LE_AUDIO_AVAILABLE_CONTEXTS";
private final BluetoothAdapter mAdapter;
private final AttributionSource mAttributionSource;
/**
* Indicating that group is Active ( Audio device is available )
*
* @hide
*/
public static final int GROUP_STATUS_ACTIVE = IBluetoothLeAudio.GROUP_STATUS_ACTIVE;
/**
* Indicating that group is Inactive ( Audio device is not available )
*
* @hide
*/
public static final int GROUP_STATUS_INACTIVE = IBluetoothLeAudio.GROUP_STATUS_INACTIVE;
/**
* Indicating that group stream is in IDLE (not streaming)
*
* @hide
*/
@FlaggedApi(Flags.FLAG_LEAUDIO_CALLBACK_ON_GROUP_STREAM_STATUS)
@SystemApi
public static final int GROUP_STREAM_STATUS_IDLE = IBluetoothLeAudio.GROUP_STREAM_STATUS_IDLE;
/**
* Indicating that group is STREAMING
*
* @hide
*/
@FlaggedApi(Flags.FLAG_LEAUDIO_CALLBACK_ON_GROUP_STREAM_STATUS)
@SystemApi
public static final int GROUP_STREAM_STATUS_STREAMING =
IBluetoothLeAudio.GROUP_STREAM_STATUS_STREAMING;
private IBluetoothLeAudio mService;
/**
* Create a BluetoothLeAudio proxy object for interacting with the local Bluetooth LeAudio
* service.
*/
/* package */ BluetoothLeAudio(Context context, BluetoothAdapter adapter) {
mAdapter = adapter;
mAttributionSource = adapter.getAttributionSource();
mService = null;
mCloseGuard = new CloseGuard();
mCloseGuard.open("close");
}
/** @hide */
@Override
public void close() {
mAdapter.closeProfileProxy(this);
}
/** @hide */
@Override
public void onServiceConnected(IBinder service) {
mService = IBluetoothLeAudio.Stub.asInterface(service);
// re-register the service-to-app callback
synchronized (mCallbackExecutorMap) {
if (mCallbackExecutorMap.isEmpty()) {
return;
}
try {
if (service != null) {
mService.registerCallback(mCallback, mAttributionSource);
}
} catch (RemoteException e) {
Log.e(TAG, "Failed to register callback", e);
}
}
}
/** @hide */
@Override
public void onServiceDisconnected() {
mService = null;
}
private IBluetoothLeAudio getService() {
return mService;
}
/** @hide */
@Override
public BluetoothAdapter getAdapter() {
return mAdapter;
}
@Override
@SuppressWarnings("Finalize") // TODO(b/314811467)
protected void finalize() {
if (mCloseGuard != null) {
mCloseGuard.warnIfOpen();
}
close();
}
/**
* Initiate connection to a profile of the remote bluetooth device.
*
* <p>This API returns false in scenarios like the profile on the device is already connected or
* Bluetooth is not turned on. When this API returns true, it is guaranteed that connection
* state intent for the profile will be broadcasted with the state. Users can get the connection
* state of the profile from this intent.
*
* @param device Remote Bluetooth Device
* @return false on immediate error, true otherwise
* @hide
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean connect(@Nullable BluetoothDevice device) {
if (DBG) log("connect(" + device + ")");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled() && isValidDevice(device)) {
try {
return service.connect(device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return false;
}
/**
* Initiate disconnection from a profile
*
* <p>This API will return false in scenarios like the profile on the Bluetooth device is not in
* connected state etc. When this API returns, true, it is guaranteed that the connection state
* change intent will be broadcasted with the state. Users can get the disconnection state of
* the profile from this intent.
*
* <p>If the disconnection is initiated by a remote device, the state will transition from
* {@link #STATE_CONNECTED} to {@link #STATE_DISCONNECTED}. If the disconnect is initiated by
* the host (local) device the state will transition from {@link #STATE_CONNECTED} to state
* {@link #STATE_DISCONNECTING} to state {@link #STATE_DISCONNECTED}. The transition to {@link
* #STATE_DISCONNECTING} can be used to distinguish between the two scenarios.
*
* @param device Remote Bluetooth Device
* @return false on immediate error, true otherwise
* @hide
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean disconnect(@Nullable BluetoothDevice device) {
if (DBG) log("disconnect(" + device + ")");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled() && isValidDevice(device)) {
try {
return service.disconnect(device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return false;
}
/**
* Get Lead device for the group.
*
* <p>Lead device is the device that can be used as an active device in the system. Active
* devices points to the Audio Device for the Le Audio group. This method returns the Lead
* devices for the connected LE Audio group and this device should be used in the
* setActiveDevice() method by other parts of the system, which wants to set to active a
* particular Le Audio group.
*
* <p>Note: getActiveDevice() returns the Lead device for the currently active LE Audio group.
* Note: When Lead device gets disconnected while Le Audio group is active and has more devices
* in the group, then Lead device will not change. If Lead device gets disconnected, for the Le
* Audio group which is not active, a new Lead device will be chosen
*
* @param groupId The group id.
* @return group lead device.
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public @Nullable BluetoothDevice getConnectedGroupLeadDevice(int groupId) {
if (VDBG) log("getConnectedGroupLeadDevice()");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled()) {
try {
return Attributable.setAttributionSource(
service.getConnectedGroupLeadDevice(groupId, mAttributionSource),
mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return null;
}
/** {@inheritDoc} */
@Override
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public @NonNull List<BluetoothDevice> getConnectedDevices() {
if (VDBG) log("getConnectedDevices()");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled()) {
try {
return Attributable.setAttributionSource(
service.getConnectedDevices(mAttributionSource), mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return Collections.emptyList();
}
/** {@inheritDoc} */
@Override
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@NonNull
public List<BluetoothDevice> getDevicesMatchingConnectionStates(@NonNull int[] states) {
if (VDBG) log("getDevicesMatchingStates()");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled()) {
try {
return Attributable.setAttributionSource(
service.getDevicesMatchingConnectionStates(states, mAttributionSource),
mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return Collections.emptyList();
}
/** {@inheritDoc} */
@Override
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public @BtProfileState int getConnectionState(@NonNull BluetoothDevice device) {
if (VDBG) log("getState(" + device + ")");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled() && isValidDevice(device)) {
try {
return service.getConnectionState(device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return BluetoothProfile.STATE_DISCONNECTED;
}
/**
* Register a {@link Callback} that will be invoked during the operation of this profile.
*
* <p>Repeated registration of the same <var>callback</var> object will have no effect after the
* first call to this method, even when the <var>executor</var> is different. API caller would
* have to call {@link #unregisterCallback(Callback)} with the same callback object before
* registering it again.
*
* <p>The {@link Callback} will be invoked only if there is codec status changed for the remote
* device or the device is connected/disconnected in a certain group or the group status is
* changed.
*
* @param executor an {@link Executor} to execute given callback
* @param callback user implementation of the {@link Callback}
* @throws NullPointerException if a null executor or callback is given
* @throws IllegalArgumentException the callback is already registered
* @hide
*/
@SystemApi
@RequiresBluetoothConnectPermission
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
})
public void registerCallback(
@NonNull @CallbackExecutor Executor executor, @NonNull Callback callback) {
Objects.requireNonNull(executor, "executor cannot be null");
Objects.requireNonNull(callback, "callback cannot be null");
if (DBG) log("registerCallback");
synchronized (mCallbackExecutorMap) {
// If the callback map is empty, we register the service-to-app callback
if (mCallbackExecutorMap.isEmpty()) {
if (!mAdapter.isEnabled()) {
/* If Bluetooth is off, just store callback and it will be registered
* when Bluetooth is on
*/
mCallbackExecutorMap.put(callback, executor);
return;
}
try {
final IBluetoothLeAudio service = getService();
if (service != null) {
service.registerCallback(mCallback, mAttributionSource);
}
} catch (RemoteException e) {
throw e.rethrowAsRuntimeException();
}
}
// Adds the passed in callback to our map of callbacks to executors
if (mCallbackExecutorMap.containsKey(callback)) {
throw new IllegalArgumentException("This callback has already been registered");
}
mCallbackExecutorMap.put(callback, executor);
}
}
/**
* Unregister the specified {@link Callback}.
*
* <p>The same {@link Callback} object used when calling {@link #registerCallback(Executor,
* Callback)} must be used.
*
* <p>Callbacks are automatically unregistered when application process goes away
*
* @param callback user implementation of the {@link Callback}
* @throws NullPointerException when callback is null
* @throws IllegalArgumentException when no callback is registered
* @hide
*/
@SystemApi
@RequiresBluetoothConnectPermission
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
})
public void unregisterCallback(@NonNull Callback callback) {
Objects.requireNonNull(callback, "callback cannot be null");
if (DBG) log("unregisterCallback");
synchronized (mCallbackExecutorMap) {
if (mCallbackExecutorMap.remove(callback) == null) {
throw new IllegalArgumentException("This callback has not been registered");
}
}
// If the callback map is empty, we unregister the service-to-app callback
if (mCallbackExecutorMap.isEmpty()) {
try {
final IBluetoothLeAudio service = getService();
if (service != null) {
service.unregisterCallback(mCallback, mAttributionSource);
}
} catch (RemoteException e) {
throw e.rethrowAsRuntimeException();
}
}
}
/**
* Select a connected device as active.
*
* <p>The active device selection is per profile. An active device's purpose is
* profile-specific. For example, LeAudio audio streaming is to the active LeAudio device. If a
* remote device is not connected, it cannot be selected as active.
*
* <p>This API returns false in scenarios like the profile on the device is not connected or
* Bluetooth is not turned on. When this API returns true, it is guaranteed that the {@link
* #ACTION_LE_AUDIO_ACTIVE_DEVICE_CHANGED} intent will be broadcasted with the active device.
*
* @param device the remote Bluetooth device. Could be null to clear the active device and stop
* streaming audio to a Bluetooth device.
* @return false on immediate error, true otherwise
* @hide
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean setActiveDevice(@Nullable BluetoothDevice device) {
if (DBG) log("setActiveDevice(" + device + ")");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled() && ((device == null) || isValidDevice(device))) {
try {
return service.setActiveDevice(device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return false;
}
/**
* Get the connected LeAudio devices that are active
*
* @return the list of active devices. Returns empty list on error.
* @hide
*/
@NonNull
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public List<BluetoothDevice> getActiveDevices() {
if (VDBG) log("getActiveDevice()");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled()) {
try {
return Attributable.setAttributionSource(
service.getActiveDevices(mAttributionSource), mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return Collections.emptyList();
}
/**
* Get device group id. Devices with same group id belong to same group (i.e left and right
* earbud)
*
* @param device LE Audio capable device
* @return group id that this device currently belongs to, {@link #GROUP_ID_INVALID} when this
* device does not belong to any group
*/
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public int getGroupId(@NonNull BluetoothDevice device) {
if (VDBG) log("getGroupId()");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled()) {
try {
return service.getGroupId(device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return GROUP_ID_INVALID;
}
/**
* Set volume for the streaming devices
*
* @param volume volume to set
* @hide
*/
@SystemApi
@RequiresBluetoothConnectPermission
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED
})
public void setVolume(@IntRange(from = 0, to = 255) int volume) {
if (VDBG) log("setVolume(vol: " + volume + " )");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled()) {
try {
service.setVolume(volume, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
}
/**
* Add device to the given group.
*
* @param groupId group ID the device is being added to
* @param device the active device
* @return true on success, otherwise false
* @hide
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED
})
public boolean groupAddNode(int groupId, @NonNull BluetoothDevice device) {
if (VDBG) log("groupAddNode()");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled()) {
try {
return service.groupAddNode(groupId, device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return false;
}
/**
* Remove device from a given group.
*
* @param groupId group ID the device is being removed from
* @param device the active device
* @return true on success, otherwise false
* @hide
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED
})
public boolean groupRemoveNode(int groupId, @NonNull BluetoothDevice device) {
if (VDBG) log("groupRemoveNode()");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled()) {
try {
return service.groupRemoveNode(groupId, device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return false;
}
/**
* Get the audio location for the device. The return value is a bit field. The bit definition is
* included in Bluetooth SIG Assigned Numbers - Generic Audio - Audio Location Definitions. ex.
* Front Left: 0x00000001 Front Right: 0x00000002 Front Left | Front Right: 0x00000003
*
* @param device the bluetooth device
* @return The bit field of audio location for the device, if bluetooth is off, return
* AUDIO_LOCATION_INVALID.
* @hide
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED
})
@SystemApi
public @AudioLocation int getAudioLocation(@NonNull BluetoothDevice device) {
if (VDBG) log("getAudioLocation()");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled() && isValidDevice(device)) {
try {
return service.getAudioLocation(device, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return AUDIO_LOCATION_INVALID;
}
/**
* Check if inband ringtone is enabled by the LE Audio group. Group id for the device can be
* found with {@link BluetoothLeAudio#getGroupId}.
*
* @param groupId LE Audio group id
* @return {@code true} if inband ringtone is enabled, {@code false} otherwise
* @hide
*/
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED
})
@SystemApi
public boolean isInbandRingtoneEnabled(int groupId) {
if (VDBG) {
log("isInbandRingtoneEnabled(), groupId: " + groupId);
}
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) {
log(Log.getStackTraceString(new Throwable()));
}
} else if (mAdapter.isEnabled()) {
try {
return service.isInbandRingtoneEnabled(mAttributionSource, groupId);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
throw e.rethrowAsRuntimeException();
}
}
return false;
}
/**
* Set connection policy of the profile
*
* <p>The device should already be paired. Connection policy can be one of {@link
* #CONNECTION_POLICY_ALLOWED}, {@link #CONNECTION_POLICY_FORBIDDEN}, {@link
* #CONNECTION_POLICY_UNKNOWN}
*
* @param device Paired bluetooth device
* @param connectionPolicy is the connection policy to set to for this profile
* @return true if connectionPolicy is set, false on error
* @hide
*/
@SystemApi
@RequiresBluetoothConnectPermission
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
})
public boolean setConnectionPolicy(
@NonNull BluetoothDevice device, @ConnectionPolicy int connectionPolicy) {
if (DBG) log("setConnectionPolicy(" + device + ", " + connectionPolicy + ")");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled()
&& isValidDevice(device)
&& (connectionPolicy == BluetoothProfile.CONNECTION_POLICY_FORBIDDEN
|| connectionPolicy == BluetoothProfile.CONNECTION_POLICY_ALLOWED)) {
try {
return service.setConnectionPolicy(device, connectionPolicy, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
}
}
return false;
}
/**
* 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(@Nullable BluetoothDevice device) {
if (VDBG) log("getConnectionPolicy(" + device + ")");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.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;
}
/**
* 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";
default:
return "<unknown state " + state + ">";
}
}
private boolean isValidDevice(@Nullable BluetoothDevice device) {
if (device == null) return false;
if (BluetoothAdapter.checkBluetoothAddress(device.getAddress())) return true;
return false;
}
private static void log(String msg) {
Log.d(TAG, msg);
}
/**
* Gets the current codec status (configuration and capability).
*
* @param groupId The group id
* @return the current codec status
* @hide
*/
@SystemApi
@Nullable
@RequiresBluetoothConnectPermission
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED
})
public BluetoothLeAudioCodecStatus getCodecStatus(int groupId) {
if (DBG) {
Log.d(TAG, "getCodecStatus(" + groupId + ")");
}
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
} else if (mAdapter.isEnabled()) {
try {
return service.getCodecStatus(groupId, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
throw e.rethrowAsRuntimeException();
}
}
return null;
}
/**
* Sets the codec configuration preference.
*
* @param groupId the groupId
* @param inputCodecConfig the input codec configuration preference
* @param outputCodecConfig the output codec configuration preference
* @throws IllegalStateException if LE Audio Service is null
* @throws NullPointerException if any of the configs is null
* @hide
*/
@SystemApi
@RequiresBluetoothConnectPermission
@RequiresPermission(
allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED
})
public void setCodecConfigPreference(
int groupId,
@NonNull BluetoothLeAudioCodecConfig inputCodecConfig,
@NonNull BluetoothLeAudioCodecConfig outputCodecConfig) {
if (DBG) Log.d(TAG, "setCodecConfigPreference(" + groupId + ")");
Objects.requireNonNull(inputCodecConfig, " inputCodecConfig shall not be null");
Objects.requireNonNull(outputCodecConfig, " outputCodecConfig shall not be null");
final IBluetoothLeAudio service = getService();
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
if (DBG) log(Log.getStackTraceString(new Throwable()));
throw new IllegalStateException("Service is unavailable");
} else if (mAdapter.isEnabled()) {
try {
service.setCodecConfigPreference(
groupId, inputCodecConfig, outputCodecConfig, mAttributionSource);
} catch (RemoteException e) {
Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
throw e.rethrowAsRuntimeException();
}
}
}
}
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