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/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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.Manifest;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.RequiresNoPermission;
import android.annotation.RequiresPermission;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.annotation.SystemApi;
import android.bluetooth.annotations.RequiresBluetoothConnectPermission;
import android.bluetooth.annotations.RequiresLegacyBluetoothAdminPermission;
import android.bluetooth.annotations.RequiresLegacyBluetoothPermission;
import android.compat.annotation.UnsupportedAppUsage;
import android.content.Attributable;
import android.content.AttributionSource;
import android.content.Context;
import android.os.Binder;
import android.os.Build;
import android.os.IBinder;
import android.os.ParcelUuid;
import android.os.RemoteException;
import android.util.Log;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.ArrayList;
import java.util.List;
/**
* This class provides the public APIs to control the Bluetooth A2DP
* profile.
*
* BluetoothA2dp is a proxy object for controlling the Bluetooth A2DP
* Service via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get
* the BluetoothA2dp proxy object.
*
*
Android only supports one connected Bluetooth A2dp device at a time.
* Each method is protected with its appropriate permission.
*/
public final class BluetoothA2dp implements BluetoothProfile {
private static final String TAG = "BluetoothA2dp";
private static final boolean DBG = true;
private static final boolean VDBG = false;
/**
* Intent used to broadcast the change in connection state of the A2DP
* profile.
*
*
This intent will have 3 extras:
*
* - {@link #EXTRA_STATE} - The current state of the profile.
* - {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.
* - {@link BluetoothDevice#EXTRA_DEVICE} - The remote device.
*
*
* {@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_CONNECTION_STATE_CHANGED =
"android.bluetooth.a2dp.profile.action.CONNECTION_STATE_CHANGED";
/**
* Intent used to broadcast the change in the Playing state of the A2DP
* profile.
*
*
This intent will have 3 extras:
*
* - {@link #EXTRA_STATE} - The current state of the profile.
* - {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.
* - {@link BluetoothDevice#EXTRA_DEVICE} - The remote device.
*
*
* {@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of
* {@link #STATE_PLAYING}, {@link #STATE_NOT_PLAYING},
*/
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_PLAYING_STATE_CHANGED =
"android.bluetooth.a2dp.profile.action.PLAYING_STATE_CHANGED";
/** @hide */
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_AVRCP_CONNECTION_STATE_CHANGED =
"android.bluetooth.a2dp.profile.action.AVRCP_CONNECTION_STATE_CHANGED";
/**
* Intent used to broadcast the selection of a connected device as active.
*
*
This intent will have one extra:
*
* - {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. It can
* be null if no device is active.
*
*
* @hide
*/
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
@UnsupportedAppUsage(trackingBug = 171933273)
public static final String ACTION_ACTIVE_DEVICE_CHANGED =
"android.bluetooth.a2dp.profile.action.ACTIVE_DEVICE_CHANGED";
/**
* Intent used to broadcast the change in the Audio Codec state of the
* A2DP Source profile.
*
* This intent will have 2 extras:
*
* - {@link BluetoothCodecStatus#EXTRA_CODEC_STATUS} - The codec status.
* - {@link BluetoothDevice#EXTRA_DEVICE} - The remote device if the device is currently
* connected, otherwise it is not included.
*
*
* @hide
*/
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
@UnsupportedAppUsage(trackingBug = 181103983)
public static final String ACTION_CODEC_CONFIG_CHANGED =
"android.bluetooth.a2dp.profile.action.CODEC_CONFIG_CHANGED";
/**
* A2DP sink device is streaming music. This state can be one of
* {@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} of
* {@link #ACTION_PLAYING_STATE_CHANGED} intent.
*/
public static final int STATE_PLAYING = 10;
/**
* A2DP sink device is NOT streaming music. This state can be one of
* {@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} of
* {@link #ACTION_PLAYING_STATE_CHANGED} intent.
*/
public static final int STATE_NOT_PLAYING = 11;
/** @hide */
@IntDef(prefix = "OPTIONAL_CODECS_", value = {
OPTIONAL_CODECS_SUPPORT_UNKNOWN,
OPTIONAL_CODECS_NOT_SUPPORTED,
OPTIONAL_CODECS_SUPPORTED
})
@Retention(RetentionPolicy.SOURCE)
public @interface OptionalCodecsSupportStatus {}
/**
* We don't have a stored preference for whether or not the given A2DP sink device supports
* optional codecs.
*
* @hide
*/
@SystemApi
public static final int OPTIONAL_CODECS_SUPPORT_UNKNOWN = -1;
/**
* The given A2DP sink device does not support optional codecs.
*
* @hide
*/
@SystemApi
public static final int OPTIONAL_CODECS_NOT_SUPPORTED = 0;
/**
* The given A2DP sink device does support optional codecs.
*
* @hide
*/
@SystemApi
public static final int OPTIONAL_CODECS_SUPPORTED = 1;
/** @hide */
@IntDef(prefix = "OPTIONAL_CODECS_PREF_", value = {
OPTIONAL_CODECS_PREF_UNKNOWN,
OPTIONAL_CODECS_PREF_DISABLED,
OPTIONAL_CODECS_PREF_ENABLED
})
@Retention(RetentionPolicy.SOURCE)
public @interface OptionalCodecsPreferenceStatus {}
/**
* We don't have a stored preference for whether optional codecs should be enabled or
* disabled for the given A2DP device.
*
* @hide
*/
@SystemApi
public static final int OPTIONAL_CODECS_PREF_UNKNOWN = -1;
/**
* Optional codecs should be disabled for the given A2DP device.
*
* @hide
*/
@SystemApi
public static final int OPTIONAL_CODECS_PREF_DISABLED = 0;
/**
* Optional codecs should be enabled for the given A2DP device.
*
* @hide
*/
@SystemApi
public static final int OPTIONAL_CODECS_PREF_ENABLED = 1;
/** @hide */
@IntDef(prefix = "DYNAMIC_BUFFER_SUPPORT_", value = {
DYNAMIC_BUFFER_SUPPORT_NONE,
DYNAMIC_BUFFER_SUPPORT_A2DP_OFFLOAD,
DYNAMIC_BUFFER_SUPPORT_A2DP_SOFTWARE_ENCODING
})
@Retention(RetentionPolicy.SOURCE)
public @interface Type {}
/**
* Indicates the supported type of Dynamic Audio Buffer is not supported.
*
* @hide
*/
@SystemApi
public static final int DYNAMIC_BUFFER_SUPPORT_NONE = 0;
/**
* Indicates the supported type of Dynamic Audio Buffer is A2DP offload.
*
* @hide
*/
@SystemApi
public static final int DYNAMIC_BUFFER_SUPPORT_A2DP_OFFLOAD = 1;
/**
* Indicates the supported type of Dynamic Audio Buffer is A2DP software encoding.
*
* @hide
*/
@SystemApi
public static final int DYNAMIC_BUFFER_SUPPORT_A2DP_SOFTWARE_ENCODING = 2;
private final BluetoothAdapter mAdapter;
private final AttributionSource mAttributionSource;
private final BluetoothProfileConnector mProfileConnector =
new BluetoothProfileConnector(this, BluetoothProfile.A2DP, "BluetoothA2dp",
IBluetoothA2dp.class.getName()) {
@Override
public IBluetoothA2dp getServiceInterface(IBinder service) {
return IBluetoothA2dp.Stub.asInterface(Binder.allowBlocking(service));
}
};
/**
* Create a BluetoothA2dp proxy object for interacting with the local
* Bluetooth A2DP service.
*/
/* package */ BluetoothA2dp(Context context, ServiceListener listener,
BluetoothAdapter adapter) {
mAdapter = adapter;
mAttributionSource = adapter.getAttributionSource();
mProfileConnector.connect(context, listener);
}
@UnsupportedAppUsage
/*package*/ void close() {
mProfileConnector.disconnect();
}
private IBluetoothA2dp getService() {
return mProfileConnector.getService();
}
@Override
public void finalize() {
// The empty finalize needs to be kept or the
// cts signature tests would fail.
}
/**
* Initiate connection to a profile of the remote Bluetooth device.
*
* 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
*/
@RequiresLegacyBluetoothAdminPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@UnsupportedAppUsage
public boolean connect(BluetoothDevice device) {
if (DBG) log("connect(" + device + ")");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled() && isValidDevice(device)) {
return service.connect(device);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return false;
}
}
/**
* Initiate disconnection from a profile
*
*
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.
*
*
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
*/
@RequiresLegacyBluetoothAdminPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@UnsupportedAppUsage
public boolean disconnect(BluetoothDevice device) {
if (DBG) log("disconnect(" + device + ")");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled() && isValidDevice(device)) {
return service.disconnect(device);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return false;
}
}
/**
* {@inheritDoc}
*/
@Override
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public List getConnectedDevices() {
if (VDBG) log("getConnectedDevices()");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
return Attributable.setAttributionSource(
service.getConnectedDevicesWithAttribution(mAttributionSource),
mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return new ArrayList();
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return new ArrayList();
}
}
/**
* {@inheritDoc}
*/
@Override
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public List getDevicesMatchingConnectionStates(int[] states) {
if (VDBG) log("getDevicesMatchingStates()");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
return Attributable.setAttributionSource(
service.getDevicesMatchingConnectionStatesWithAttribution(states,
mAttributionSource),
mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return new ArrayList();
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return new ArrayList();
}
}
/**
* {@inheritDoc}
*/
@Override
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public @BtProfileState int getConnectionState(BluetoothDevice device) {
if (VDBG) log("getState(" + device + ")");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()
&& isValidDevice(device)) {
return service.getConnectionState(device);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return BluetoothProfile.STATE_DISCONNECTED;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return BluetoothProfile.STATE_DISCONNECTED;
}
}
/**
* Select a connected device as active.
*
* The active device selection is per profile. An active device's
* purpose is profile-specific. For example, A2DP audio streaming
* is to the active A2DP Sink device. If a remote device is not
* connected, it cannot be selected as active.
*
* 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_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
*/
@RequiresLegacyBluetoothAdminPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@UnsupportedAppUsage(trackingBug = 171933273)
public boolean setActiveDevice(@Nullable BluetoothDevice device) {
if (DBG) log("setActiveDevice(" + device + ")");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()
&& ((device == null) || isValidDevice(device))) {
return service.setActiveDevice(device, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return false;
}
}
/**
* Get the connected device that is active.
*
* @return the connected device that is active or null if no device
* is active
* @hide
*/
@UnsupportedAppUsage(trackingBug = 171933273)
@Nullable
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public BluetoothDevice getActiveDevice() {
if (VDBG) log("getActiveDevice()");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
return Attributable.setAttributionSource(
service.getActiveDevice(mAttributionSource), mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return null;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return null;
}
}
/**
* Set priority of the profile
*
*
The device should already be paired.
* Priority can be one of {@link #PRIORITY_ON} or {@link #PRIORITY_OFF}
*
* @param device Paired bluetooth device
* @param priority
* @return true if priority is set, false on error
* @hide
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
})
public boolean setPriority(BluetoothDevice device, int priority) {
if (DBG) log("setPriority(" + device + ", " + priority + ")");
return setConnectionPolicy(device, BluetoothAdapter.priorityToConnectionPolicy(priority));
}
/**
* Set connection policy of the profile
*
*
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 + ")");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()
&& isValidDevice(device)) {
if (connectionPolicy != BluetoothProfile.CONNECTION_POLICY_FORBIDDEN
&& connectionPolicy != BluetoothProfile.CONNECTION_POLICY_ALLOWED) {
return false;
}
return service.setConnectionPolicy(device, connectionPolicy, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return false;
}
}
/**
* Get the priority of the profile.
*
*
The priority can be any of:
* {@link #PRIORITY_OFF}, {@link #PRIORITY_ON}, {@link #PRIORITY_UNDEFINED}
*
* @param device Bluetooth device
* @return priority of the device
* @hide
*/
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
public int getPriority(BluetoothDevice device) {
if (VDBG) log("getPriority(" + device + ")");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()
&& isValidDevice(device)) {
return BluetoothAdapter.connectionPolicyToPriority(
service.getPriority(device, mAttributionSource));
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return BluetoothProfile.PRIORITY_OFF;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return BluetoothProfile.PRIORITY_OFF;
}
}
/**
* Get the connection policy of the profile.
*
*
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 + ")");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()
&& isValidDevice(device)) {
return service.getConnectionPolicy(device, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
}
}
/**
* Checks if Avrcp device supports the absolute volume feature.
*
* @return true if device supports absolute volume
* @hide
*/
@RequiresNoPermission
public boolean isAvrcpAbsoluteVolumeSupported() {
if (DBG) Log.d(TAG, "isAvrcpAbsoluteVolumeSupported");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
return service.isAvrcpAbsoluteVolumeSupported();
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
} catch (RemoteException e) {
Log.e(TAG, "Error talking to BT service in isAvrcpAbsoluteVolumeSupported()", e);
return false;
}
}
/**
* Tells remote device to set an absolute volume. Only if absolute volume is supported
*
* @param volume Absolute volume to be set on AVRCP side
* @hide
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public void setAvrcpAbsoluteVolume(int volume) {
if (DBG) Log.d(TAG, "setAvrcpAbsoluteVolume");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
service.setAvrcpAbsoluteVolume(volume, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
} catch (RemoteException e) {
Log.e(TAG, "Error talking to BT service in setAvrcpAbsoluteVolume()", e);
}
}
/**
* Check if A2DP profile is streaming music.
*
* @param device BluetoothDevice device
*/
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean isA2dpPlaying(BluetoothDevice device) {
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()
&& isValidDevice(device)) {
return service.isA2dpPlaying(device, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return false;
}
}
/**
* This function checks if the remote device is an AVCRP
* target and thus whether we should send volume keys
* changes or not.
*
* @hide
*/
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public boolean shouldSendVolumeKeys(BluetoothDevice device) {
if (isEnabled() && isValidDevice(device)) {
ParcelUuid[] uuids = device.getUuids();
if (uuids == null) return false;
for (ParcelUuid uuid : uuids) {
if (uuid.equals(BluetoothUuid.AVRCP_TARGET)) {
return true;
}
}
}
return false;
}
/**
* Gets the current codec status (configuration and capability).
*
* @param device the remote Bluetooth device. If null, use the current
* active A2DP Bluetooth device.
* @return the current codec status
* @hide
*/
@UnsupportedAppUsage(trackingBug = 181103983)
@Nullable
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public BluetoothCodecStatus getCodecStatus(@NonNull BluetoothDevice device) {
if (DBG) Log.d(TAG, "getCodecStatus(" + device + ")");
verifyDeviceNotNull(device, "getCodecStatus");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
return service.getCodecStatus(device, mAttributionSource);
}
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
}
return null;
} catch (RemoteException e) {
Log.e(TAG, "Error talking to BT service in getCodecStatus()", e);
return null;
}
}
/**
* Sets the codec configuration preference.
*
* @param device the remote Bluetooth device. If null, use the current
* active A2DP Bluetooth device.
* @param codecConfig the codec configuration preference
* @hide
*/
@UnsupportedAppUsage(trackingBug = 181103983)
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public void setCodecConfigPreference(@NonNull BluetoothDevice device,
@NonNull BluetoothCodecConfig codecConfig) {
if (DBG) Log.d(TAG, "setCodecConfigPreference(" + device + ")");
verifyDeviceNotNull(device, "setCodecConfigPreference");
if (codecConfig == null) {
Log.e(TAG, "setCodecConfigPreference: Codec config can't be null");
throw new IllegalArgumentException("codecConfig cannot be null");
}
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
service.setCodecConfigPreference(device, codecConfig, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return;
} catch (RemoteException e) {
Log.e(TAG, "Error talking to BT service in setCodecConfigPreference()", e);
return;
}
}
/**
* Enables the optional codecs.
*
* @param device the remote Bluetooth device. If null, use the currect
* active A2DP Bluetooth device.
* @hide
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public void enableOptionalCodecs(@NonNull BluetoothDevice device) {
if (DBG) Log.d(TAG, "enableOptionalCodecs(" + device + ")");
verifyDeviceNotNull(device, "enableOptionalCodecs");
enableDisableOptionalCodecs(device, true);
}
/**
* Disables the optional codecs.
*
* @param device the remote Bluetooth device. If null, use the currect
* active A2DP Bluetooth device.
* @hide
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
@RequiresLegacyBluetoothPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public void disableOptionalCodecs(@NonNull BluetoothDevice device) {
if (DBG) Log.d(TAG, "disableOptionalCodecs(" + device + ")");
verifyDeviceNotNull(device, "disableOptionalCodecs");
enableDisableOptionalCodecs(device, false);
}
/**
* Enables or disables the optional codecs.
*
* @param device the remote Bluetooth device. If null, use the currect
* active A2DP Bluetooth device.
* @param enable if true, enable the optional codecs, other disable them
*/
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
private void enableDisableOptionalCodecs(BluetoothDevice device, boolean enable) {
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
if (enable) {
service.enableOptionalCodecs(device, mAttributionSource);
} else {
service.disableOptionalCodecs(device, mAttributionSource);
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return;
} catch (RemoteException e) {
Log.e(TAG, "Error talking to BT service in enableDisableOptionalCodecs()", e);
return;
}
}
/**
* Returns whether this device supports optional codecs.
*
* @param device The device to check
* @return one of OPTIONAL_CODECS_SUPPORT_UNKNOWN, OPTIONAL_CODECS_NOT_SUPPORTED, or
* OPTIONAL_CODECS_SUPPORTED.
* @hide
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
@RequiresLegacyBluetoothAdminPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@OptionalCodecsSupportStatus
public int isOptionalCodecsSupported(@NonNull BluetoothDevice device) {
verifyDeviceNotNull(device, "isOptionalCodecsSupported");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled() && isValidDevice(device)) {
return service.supportsOptionalCodecs(device, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return OPTIONAL_CODECS_SUPPORT_UNKNOWN;
} catch (RemoteException e) {
Log.e(TAG, "Error talking to BT service in supportsOptionalCodecs()", e);
return OPTIONAL_CODECS_SUPPORT_UNKNOWN;
}
}
/**
* Returns whether this device should have optional codecs enabled.
*
* @param device The device in question.
* @return one of OPTIONAL_CODECS_PREF_UNKNOWN, OPTIONAL_CODECS_PREF_ENABLED, or
* OPTIONAL_CODECS_PREF_DISABLED.
* @hide
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
@RequiresLegacyBluetoothAdminPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
@OptionalCodecsPreferenceStatus
public int isOptionalCodecsEnabled(@NonNull BluetoothDevice device) {
verifyDeviceNotNull(device, "isOptionalCodecsEnabled");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled() && isValidDevice(device)) {
return service.getOptionalCodecsEnabled(device, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return OPTIONAL_CODECS_PREF_UNKNOWN;
} catch (RemoteException e) {
Log.e(TAG, "Error talking to BT service in getOptionalCodecsEnabled()", e);
return OPTIONAL_CODECS_PREF_UNKNOWN;
}
}
/**
* Sets a persistent preference for whether a given device should have optional codecs enabled.
*
* @param device The device to set this preference for.
* @param value Whether the optional codecs should be enabled for this device. This should be
* one of OPTIONAL_CODECS_PREF_UNKNOWN, OPTIONAL_CODECS_PREF_ENABLED, or
* OPTIONAL_CODECS_PREF_DISABLED.
* @hide
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, trackingBug = 170729553)
@RequiresLegacyBluetoothAdminPermission
@RequiresBluetoothConnectPermission
@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
public void setOptionalCodecsEnabled(@NonNull BluetoothDevice device,
@OptionalCodecsPreferenceStatus int value) {
verifyDeviceNotNull(device, "setOptionalCodecsEnabled");
try {
if (value != BluetoothA2dp.OPTIONAL_CODECS_PREF_UNKNOWN
&& value != BluetoothA2dp.OPTIONAL_CODECS_PREF_DISABLED
&& value != BluetoothA2dp.OPTIONAL_CODECS_PREF_ENABLED) {
Log.e(TAG, "Invalid value passed to setOptionalCodecsEnabled: " + value);
return;
}
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()
&& isValidDevice(device)) {
service.setOptionalCodecsEnabled(device, value, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return;
} catch (RemoteException e) {
Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
return;
}
}
/**
* Get the supported type of the Dynamic Audio Buffer.
*
Possible return values are
* {@link #DYNAMIC_BUFFER_SUPPORT_NONE},
* {@link #DYNAMIC_BUFFER_SUPPORT_A2DP_OFFLOAD},
* {@link #DYNAMIC_BUFFER_SUPPORT_A2DP_SOFTWARE_ENCODING}.
*
* @return supported type of Dynamic Audio Buffer feature
*
* @hide
*/
@SystemApi
@RequiresBluetoothConnectPermission
@RequiresPermission(allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
})
public @Type int getDynamicBufferSupport() {
if (VDBG) log("getDynamicBufferSupport()");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
return service.getDynamicBufferSupport(mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return DYNAMIC_BUFFER_SUPPORT_NONE;
} catch (RemoteException e) {
Log.e(TAG, "failed to get getDynamicBufferSupport, error: ", e);
return DYNAMIC_BUFFER_SUPPORT_NONE;
}
}
/**
* Return the record of {@link BufferConstraints} object that
* has the default/maximum/minimum audio buffer. This can be used to inform what the controller
* has support for the audio buffer.
*
* @return a record with {@link BufferConstraints} or null if report is unavailable
* or unsupported
*
* @hide
*/
@SystemApi
@RequiresBluetoothConnectPermission
@RequiresPermission(allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
})
public @Nullable BufferConstraints getBufferConstraints() {
if (VDBG) log("getBufferConstraints()");
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
return service.getBufferConstraints(mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return null;
} catch (RemoteException e) {
Log.e(TAG, "", e);
return null;
}
}
/**
* Set Dynamic Audio Buffer Size.
*
* @param codec audio codec
* @param value buffer millis
* @return true to indicate success, or false on immediate error
*
* @hide
*/
@SystemApi
@RequiresBluetoothConnectPermission
@RequiresPermission(allOf = {
android.Manifest.permission.BLUETOOTH_CONNECT,
android.Manifest.permission.BLUETOOTH_PRIVILEGED,
})
public boolean setBufferLengthMillis(@BluetoothCodecConfig.SourceCodecType int codec,
int value) {
if (VDBG) log("setBufferLengthMillis(" + codec + ", " + value + ")");
if (value < 0) {
Log.e(TAG, "Trying to set audio buffer length to a negative value: " + value);
return false;
}
try {
final IBluetoothA2dp service = getService();
if (service != null && isEnabled()) {
return service.setBufferLengthMillis(codec, value, mAttributionSource);
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
} catch (RemoteException e) {
Log.e(TAG, "", e);
return false;
}
}
/**
* Helper for converting a state to a string.
*
* For debug use only - strings are not internationalized.
*
* @hide
*/
@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
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 STATE_PLAYING:
return "playing";
case STATE_NOT_PLAYING:
return "not playing";
default:
return "";
}
}
private boolean isEnabled() {
if (mAdapter.getState() == BluetoothAdapter.STATE_ON) return true;
return false;
}
private void verifyDeviceNotNull(BluetoothDevice device, String methodName) {
if (device == null) {
Log.e(TAG, methodName + ": device param is null");
throw new IllegalArgumentException("Device cannot be null");
}
}
private boolean isValidDevice(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);
}
}