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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.Nullable;
import android.annotation.RequiresPermission;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.annotation.SystemApi;
import android.content.ComponentName;
import android.content.Context;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.RemoteException;
import android.util.Log;
import java.util.ArrayList;
import java.util.List;
/**
* Public API for controlling the Bluetooth Headset Service. This includes both
* Bluetooth Headset and Handsfree (v1.5) profiles.
*
* <p>BluetoothHeadset is a proxy object for controlling the Bluetooth Headset
* Service via IPC.
*
* <p> Use {@link BluetoothAdapter#getProfileProxy} to get
* the BluetoothHeadset proxy object. Use
* {@link BluetoothAdapter#closeProfileProxy} to close the service connection.
*
* <p> Android only supports one connected Bluetooth Headset at a time.
* Each method is protected with its appropriate permission.
*/
public final class BluetoothHeadset implements BluetoothProfile {
private static final String TAG = "BluetoothHeadset";
private static final boolean DBG = true;
private static final boolean VDBG = false;
/**
* Intent used to broadcast the change in connection state of the Headset
* profile.
*
* <p>This intent will have 3 extras:
* <ul>
* <li> {@link #EXTRA_STATE} - The current state of the profile. </li>
* <li> {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile. </li>
* <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. </li>
* </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}.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission to
* receive.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_CONNECTION_STATE_CHANGED =
"android.bluetooth.headset.profile.action.CONNECTION_STATE_CHANGED";
/**
* Intent used to broadcast the change in the Audio Connection state of the
* A2DP profile.
*
* <p>This intent will have 3 extras:
* <ul>
* <li> {@link #EXTRA_STATE} - The current state of the profile. </li>
* <li> {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile. </li>
* <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. </li>
* </ul>
* <p>{@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of
* {@link #STATE_AUDIO_CONNECTED}, {@link #STATE_AUDIO_DISCONNECTED},
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission
* to receive.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_AUDIO_STATE_CHANGED =
"android.bluetooth.headset.profile.action.AUDIO_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. </li>
* </ul>
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission to
* receive.
*
* @hide
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_ACTIVE_DEVICE_CHANGED =
"android.bluetooth.headset.profile.action.ACTIVE_DEVICE_CHANGED";
/**
* Intent used to broadcast that the headset has posted a
* vendor-specific event.
*
* <p>This intent will have 4 extras and 1 category.
* <ul>
* <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote Bluetooth Device
* </li>
* <li> {@link #EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD} - The vendor
* specific command </li>
* <li> {@link #EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD_TYPE} - The AT
* command type which can be one of {@link #AT_CMD_TYPE_READ},
* {@link #AT_CMD_TYPE_TEST}, or {@link #AT_CMD_TYPE_SET},
* {@link #AT_CMD_TYPE_BASIC},{@link #AT_CMD_TYPE_ACTION}. </li>
* <li> {@link #EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_ARGS} - Command
* arguments. </li>
* </ul>
*
* <p> The category is the Company ID of the vendor defining the
* vendor-specific command. {@link BluetoothAssignedNumbers}
*
* For example, for Plantronics specific events
* Category will be {@link #VENDOR_SPECIFIC_HEADSET_EVENT_COMPANY_ID_CATEGORY}.55
*
* <p> For example, an AT+XEVENT=foo,3 will get translated into
* <ul>
* <li> EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD = +XEVENT </li>
* <li> EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD_TYPE = AT_CMD_TYPE_SET </li>
* <li> EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_ARGS = foo, 3 </li>
* </ul>
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission
* to receive.
*/
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_VENDOR_SPECIFIC_HEADSET_EVENT =
"android.bluetooth.headset.action.VENDOR_SPECIFIC_HEADSET_EVENT";
/**
* A String extra field in {@link #ACTION_VENDOR_SPECIFIC_HEADSET_EVENT}
* intents that contains the name of the vendor-specific command.
*/
public static final String EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD =
"android.bluetooth.headset.extra.VENDOR_SPECIFIC_HEADSET_EVENT_CMD";
/**
* An int extra field in {@link #ACTION_VENDOR_SPECIFIC_HEADSET_EVENT}
* intents that contains the AT command type of the vendor-specific command.
*/
public static final String EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD_TYPE =
"android.bluetooth.headset.extra.VENDOR_SPECIFIC_HEADSET_EVENT_CMD_TYPE";
/**
* AT command type READ used with
* {@link #EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD_TYPE}
* For example, AT+VGM?. There are no arguments for this command type.
*/
public static final int AT_CMD_TYPE_READ = 0;
/**
* AT command type TEST used with
* {@link #EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD_TYPE}
* For example, AT+VGM=?. There are no arguments for this command type.
*/
public static final int AT_CMD_TYPE_TEST = 1;
/**
* AT command type SET used with
* {@link #EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD_TYPE}
* For example, AT+VGM=<args>.
*/
public static final int AT_CMD_TYPE_SET = 2;
/**
* AT command type BASIC used with
* {@link #EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD_TYPE}
* For example, ATD. Single character commands and everything following the
* character are arguments.
*/
public static final int AT_CMD_TYPE_BASIC = 3;
/**
* AT command type ACTION used with
* {@link #EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_CMD_TYPE}
* For example, AT+CHUP. There are no arguments for action commands.
*/
public static final int AT_CMD_TYPE_ACTION = 4;
/**
* A Parcelable String array extra field in
* {@link #ACTION_VENDOR_SPECIFIC_HEADSET_EVENT} intents that contains
* the arguments to the vendor-specific command.
*/
public static final String EXTRA_VENDOR_SPECIFIC_HEADSET_EVENT_ARGS =
"android.bluetooth.headset.extra.VENDOR_SPECIFIC_HEADSET_EVENT_ARGS";
/**
* The intent category to be used with {@link #ACTION_VENDOR_SPECIFIC_HEADSET_EVENT}
* for the companyId
*/
public static final String VENDOR_SPECIFIC_HEADSET_EVENT_COMPANY_ID_CATEGORY =
"android.bluetooth.headset.intent.category.companyid";
/**
* A vendor-specific command for unsolicited result code.
*/
public static final String VENDOR_RESULT_CODE_COMMAND_ANDROID = "+ANDROID";
/**
* A vendor-specific AT command
*
* @hide
*/
public static final String VENDOR_SPECIFIC_HEADSET_EVENT_XAPL = "+XAPL";
/**
* A vendor-specific AT command
*
* @hide
*/
public static final String VENDOR_SPECIFIC_HEADSET_EVENT_IPHONEACCEV = "+IPHONEACCEV";
/**
* Battery level indicator associated with
* {@link #VENDOR_SPECIFIC_HEADSET_EVENT_IPHONEACCEV}
*
* @hide
*/
public static final int VENDOR_SPECIFIC_HEADSET_EVENT_IPHONEACCEV_BATTERY_LEVEL = 1;
/**
* A vendor-specific AT command
*
* @hide
*/
public static final String VENDOR_SPECIFIC_HEADSET_EVENT_XEVENT = "+XEVENT";
/**
* Battery level indicator associated with {@link #VENDOR_SPECIFIC_HEADSET_EVENT_XEVENT}
*
* @hide
*/
public static final String VENDOR_SPECIFIC_HEADSET_EVENT_XEVENT_BATTERY_LEVEL = "BATTERY";
/**
* Headset state when SCO audio is not connected.
* This state can be one of
* {@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} of
* {@link #ACTION_AUDIO_STATE_CHANGED} intent.
*/
public static final int STATE_AUDIO_DISCONNECTED = 10;
/**
* Headset state when SCO audio is connecting.
* This state can be one of
* {@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} of
* {@link #ACTION_AUDIO_STATE_CHANGED} intent.
*/
public static final int STATE_AUDIO_CONNECTING = 11;
/**
* Headset state when SCO audio is connected.
* This state can be one of
* {@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} of
* {@link #ACTION_AUDIO_STATE_CHANGED} intent.
*/
/**
* Intent used to broadcast the headset's indicator status
*
* <p>This intent will have 3 extras:
* <ul>
* <li> {@link #EXTRA_HF_INDICATORS_IND_ID} - The Assigned number of headset Indicator which
* is supported by the headset ( as indicated by AT+BIND command in the SLC
* sequence) or whose value is changed (indicated by AT+BIEV command) </li>
* <li> {@link #EXTRA_HF_INDICATORS_IND_VALUE} - Updated value of headset indicator. </li>
* <li> {@link BluetoothDevice#EXTRA_DEVICE} - Remote device. </li>
* </ul>
* <p>{@link #EXTRA_HF_INDICATORS_IND_ID} is defined by Bluetooth SIG and each of the indicators
* are given an assigned number. Below shows the assigned number of Indicator added so far
* - Enhanced Safety - 1, Valid Values: 0 - Disabled, 1 - Enabled
* - Battery Level - 2, Valid Values: 0~100 - Remaining level of Battery
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission to receive.
*
* @hide
*/
public static final String ACTION_HF_INDICATORS_VALUE_CHANGED =
"android.bluetooth.headset.action.HF_INDICATORS_VALUE_CHANGED";
/**
* A int extra field in {@link #ACTION_HF_INDICATORS_VALUE_CHANGED}
* intents that contains the assigned number of the headset indicator as defined by
* Bluetooth SIG that is being sent. Value range is 0-65535 as defined in HFP 1.7
*
* @hide
*/
public static final String EXTRA_HF_INDICATORS_IND_ID =
"android.bluetooth.headset.extra.HF_INDICATORS_IND_ID";
/**
* A int extra field in {@link #ACTION_HF_INDICATORS_VALUE_CHANGED}
* intents that contains the value of the Headset indicator that is being sent.
*
* @hide
*/
public static final String EXTRA_HF_INDICATORS_IND_VALUE =
"android.bluetooth.headset.extra.HF_INDICATORS_IND_VALUE";
public static final int STATE_AUDIO_CONNECTED = 12;
private static final int MESSAGE_HEADSET_SERVICE_CONNECTED = 100;
private static final int MESSAGE_HEADSET_SERVICE_DISCONNECTED = 101;
private Context mContext;
private ServiceListener mServiceListener;
private volatile IBluetoothHeadset mService;
private BluetoothAdapter mAdapter;
private final IBluetoothStateChangeCallback mBluetoothStateChangeCallback =
new IBluetoothStateChangeCallback.Stub() {
public void onBluetoothStateChange(boolean up) {
if (DBG) Log.d(TAG, "onBluetoothStateChange: up=" + up);
if (!up) {
if (VDBG) Log.d(TAG, "Unbinding service...");
doUnbind();
} else {
synchronized (mConnection) {
try {
if (mService == null) {
if (VDBG) Log.d(TAG, "Binding service...");
doBind();
}
} catch (Exception re) {
Log.e(TAG, "", re);
}
}
}
}
};
/**
* Create a BluetoothHeadset proxy object.
*/
/*package*/ BluetoothHeadset(Context context, ServiceListener l) {
mContext = context;
mServiceListener = l;
mAdapter = BluetoothAdapter.getDefaultAdapter();
IBluetoothManager mgr = mAdapter.getBluetoothManager();
if (mgr != null) {
try {
mgr.registerStateChangeCallback(mBluetoothStateChangeCallback);
} catch (RemoteException e) {
Log.e(TAG, "", e);
}
}
doBind();
}
boolean doBind() {
try {
return mAdapter.getBluetoothManager().bindBluetoothProfileService(
BluetoothProfile.HEADSET, mConnection);
} catch (RemoteException e) {
Log.e(TAG, "Unable to bind HeadsetService", e);
}
return false;
}
void doUnbind() {
synchronized (mConnection) {
if (mService != null) {
try {
mAdapter.getBluetoothManager().unbindBluetoothProfileService(
BluetoothProfile.HEADSET, mConnection);
} catch (RemoteException e) {
Log.e(TAG, "Unable to unbind HeadsetService", e);
}
}
}
}
/**
* Close the connection to the backing service.
* Other public functions of BluetoothHeadset will return default error
* results once close() has been called. Multiple invocations of close()
* are ok.
*/
/*package*/ void close() {
if (VDBG) log("close()");
IBluetoothManager mgr = mAdapter.getBluetoothManager();
if (mgr != null) {
try {
mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback);
} catch (Exception e) {
Log.e(TAG, "", e);
}
}
mServiceListener = null;
doUnbind();
}
/**
* Initiate connection to a profile of the remote bluetooth device.
*
* <p> Currently, the system supports only 1 connection to the
* headset/handsfree profile. The API will automatically disconnect connected
* devices before connecting.
*
* <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.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
* permission.
*
* @param device Remote Bluetooth Device
* @return false on immediate error, true otherwise
* @hide
*/
@SystemApi
@RequiresPermission(android.Manifest.permission.BLUETOOTH_ADMIN)
public boolean connect(BluetoothDevice device) {
if (DBG) log("connect(" + device + ")");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled() && isValidDevice(device)) {
try {
return service.connect(device);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
return false;
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
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.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
* permission.
*
* @param device Remote Bluetooth Device
* @return false on immediate error, true otherwise
* @hide
*/
@SystemApi
@RequiresPermission(android.Manifest.permission.BLUETOOTH_ADMIN)
public boolean disconnect(BluetoothDevice device) {
if (DBG) log("disconnect(" + device + ")");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled() && isValidDevice(device)) {
try {
return service.disconnect(device);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
return false;
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
}
/**
* {@inheritDoc}
*/
@Override
public List<BluetoothDevice> getConnectedDevices() {
if (VDBG) log("getConnectedDevices()");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
return service.getConnectedDevices();
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
return new ArrayList<BluetoothDevice>();
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return new ArrayList<BluetoothDevice>();
}
/**
* {@inheritDoc}
*/
@Override
public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
if (VDBG) log("getDevicesMatchingStates()");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
return service.getDevicesMatchingConnectionStates(states);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
return new ArrayList<BluetoothDevice>();
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return new ArrayList<BluetoothDevice>();
}
/**
* {@inheritDoc}
*/
@Override
public int getConnectionState(BluetoothDevice device) {
if (VDBG) log("getConnectionState(" + device + ")");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled() && isValidDevice(device)) {
try {
return service.getConnectionState(device);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
return BluetoothProfile.STATE_DISCONNECTED;
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return BluetoothProfile.STATE_DISCONNECTED;
}
/**
* Set priority of the profile
*
* <p> The device should already be paired.
* Priority can be one of {@link BluetoothProfile#PRIORITY_ON} or
* {@link BluetoothProfile#PRIORITY_OFF},
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
* permission.
*
* @param device Paired bluetooth device
* @param priority
* @return true if priority is set, false on error
* @hide
*/
@SystemApi
@RequiresPermission(android.Manifest.permission.BLUETOOTH_ADMIN)
public boolean setPriority(BluetoothDevice device, int priority) {
if (DBG) log("setPriority(" + device + ", " + priority + ")");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled() && isValidDevice(device)) {
if (priority != BluetoothProfile.PRIORITY_OFF
&& priority != BluetoothProfile.PRIORITY_ON) {
return false;
}
try {
return service.setPriority(device, priority);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
return false;
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
}
/**
* Get the priority of the profile.
*
* <p> The priority can be any of:
* {@link #PRIORITY_AUTO_CONNECT}, {@link #PRIORITY_OFF},
* {@link #PRIORITY_ON}, {@link #PRIORITY_UNDEFINED}
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
*
* @param device Bluetooth device
* @return priority of the device
* @hide
*/
public int getPriority(BluetoothDevice device) {
if (VDBG) log("getPriority(" + device + ")");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled() && isValidDevice(device)) {
try {
return service.getPriority(device);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
return PRIORITY_OFF;
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return PRIORITY_OFF;
}
/**
* Start Bluetooth voice recognition. This methods sends the voice
* recognition AT command to the headset and establishes the
* audio connection.
*
* <p> Users can listen to {@link #ACTION_AUDIO_STATE_CHANGED}.
* If this function returns true, this intent will be broadcasted with
* {@link #EXTRA_STATE} set to {@link #STATE_AUDIO_CONNECTING}.
*
* <p> {@link #EXTRA_STATE} will transition from
* {@link #STATE_AUDIO_CONNECTING} to {@link #STATE_AUDIO_CONNECTED} when
* audio connection is established and to {@link #STATE_AUDIO_DISCONNECTED}
* in case of failure to establish the audio connection.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
*
* @param device Bluetooth headset
* @return false if there is no headset connected, or the connected headset doesn't support
* voice recognition, or voice recognition is already started, or audio channel is occupied,
* or on error, true otherwise
*/
public boolean startVoiceRecognition(BluetoothDevice device) {
if (DBG) log("startVoiceRecognition()");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled() && isValidDevice(device)) {
try {
return service.startVoiceRecognition(device);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
}
/**
* Stop Bluetooth Voice Recognition mode, and shut down the
* Bluetooth audio path.
*
* <p> Users can listen to {@link #ACTION_AUDIO_STATE_CHANGED}.
* If this function returns true, this intent will be broadcasted with
* {@link #EXTRA_STATE} set to {@link #STATE_AUDIO_DISCONNECTED}.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
*
* @param device Bluetooth headset
* @return false if there is no headset connected, or voice recognition has not started,
* or voice recognition has ended on this headset, or on error, true otherwise
*/
public boolean stopVoiceRecognition(BluetoothDevice device) {
if (DBG) log("stopVoiceRecognition()");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled() && isValidDevice(device)) {
try {
return service.stopVoiceRecognition(device);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
}
/**
* Check if Bluetooth SCO audio is connected.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
*
* @param device Bluetooth headset
* @return true if SCO is connected, false otherwise or on error
*/
public boolean isAudioConnected(BluetoothDevice device) {
if (VDBG) log("isAudioConnected()");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled() && isValidDevice(device)) {
try {
return service.isAudioConnected(device);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
}
/**
* Indicates if current platform supports voice dialing over bluetooth SCO.
*
* @return true if voice dialing over bluetooth is supported, false otherwise.
* @hide
*/
public static boolean isBluetoothVoiceDialingEnabled(Context context) {
return context.getResources().getBoolean(
com.android.internal.R.bool.config_bluetooth_sco_off_call);
}
/**
* Get the current audio state of the Headset.
* Note: This is an internal function and shouldn't be exposed
*
* @hide
*/
public int getAudioState(BluetoothDevice device) {
if (VDBG) log("getAudioState");
final IBluetoothHeadset service = mService;
if (service != null && !isDisabled()) {
try {
return service.getAudioState(device);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
}
return BluetoothHeadset.STATE_AUDIO_DISCONNECTED;
}
/**
* Sets whether audio routing is allowed. When set to {@code false}, the AG will not route any
* audio to the HF unless explicitly told to.
* This method should be used in cases where the SCO channel is shared between multiple profiles
* and must be delegated by a source knowledgeable
* Note: This is an internal function and shouldn't be exposed
*
* @param allowed {@code true} if the profile can reroute audio, {@code false} otherwise.
* @hide
*/
public void setAudioRouteAllowed(boolean allowed) {
if (VDBG) log("setAudioRouteAllowed");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
service.setAudioRouteAllowed(allowed);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
}
}
/**
* Returns whether audio routing is allowed. see {@link #setAudioRouteAllowed(boolean)}.
* Note: This is an internal function and shouldn't be exposed
*
* @hide
*/
public boolean getAudioRouteAllowed() {
if (VDBG) log("getAudioRouteAllowed");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
return service.getAudioRouteAllowed();
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
}
return false;
}
/**
* Force SCO audio to be opened regardless any other restrictions
*
* @param forced Whether or not SCO audio connection should be forced: True to force SCO audio
* False to use SCO audio in normal manner
* @hide
*/
public void setForceScoAudio(boolean forced) {
if (VDBG) log("setForceScoAudio " + String.valueOf(forced));
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
service.setForceScoAudio(forced);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
}
}
/**
* Check if at least one headset's SCO audio is connected or connecting
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
*
* @return true if at least one device's SCO audio is connected or connecting, false otherwise
* or on error
* @hide
*/
public boolean isAudioOn() {
if (VDBG) log("isAudioOn()");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
return service.isAudioOn();
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
}
}
if (service == null) Log.w(TAG, "Proxy not attached to service");
return false;
}
/**
* Initiates a connection of headset audio to the current active device
*
* <p> Users can listen to {@link #ACTION_AUDIO_STATE_CHANGED}.
* If this function returns true, this intent will be broadcasted with
* {@link #EXTRA_STATE} set to {@link #STATE_AUDIO_CONNECTING}.
*
* <p> {@link #EXTRA_STATE} will transition from
* {@link #STATE_AUDIO_CONNECTING} to {@link #STATE_AUDIO_CONNECTED} when
* audio connection is established and to {@link #STATE_AUDIO_DISCONNECTED}
* in case of failure to establish the audio connection.
*
* Note that this intent will not be sent if {@link BluetoothHeadset#isAudioOn()} is true
* before calling this method
*
* @return false if there was some error such as there is no active headset
* @hide
*/
public boolean connectAudio() {
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
return service.connectAudio();
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
}
return false;
}
/**
* Initiates a disconnection of HFP SCO audio.
* Tear down voice recognition or virtual voice call if any.
*
* <p> Users can listen to {@link #ACTION_AUDIO_STATE_CHANGED}.
* If this function returns true, this intent will be broadcasted with
* {@link #EXTRA_STATE} set to {@link #STATE_AUDIO_DISCONNECTED}.
*
* @return false if audio is not connected, or on error, true otherwise
* @hide
*/
public boolean disconnectAudio() {
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
return service.disconnectAudio();
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
}
return false;
}
/**
* Initiates a SCO channel connection as a virtual voice call to the current active device
* Active handsfree device will be notified of incoming call and connected call.
*
* <p> Users can listen to {@link #ACTION_AUDIO_STATE_CHANGED}.
* If this function returns true, this intent will be broadcasted with
* {@link #EXTRA_STATE} set to {@link #STATE_AUDIO_CONNECTING}.
*
* <p> {@link #EXTRA_STATE} will transition from
* {@link #STATE_AUDIO_CONNECTING} to {@link #STATE_AUDIO_CONNECTED} when
* audio connection is established and to {@link #STATE_AUDIO_DISCONNECTED}
* in case of failure to establish the audio connection.
*
* @return true if successful, false if one of the following case applies
* - SCO audio is not idle (connecting or connected)
* - virtual call has already started
* - there is no active device
* - a Telecom managed call is going on
* - binder is dead or Bluetooth is disabled or other error
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean startScoUsingVirtualVoiceCall() {
if (DBG) log("startScoUsingVirtualVoiceCall()");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
return service.startScoUsingVirtualVoiceCall();
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
}
return false;
}
/**
* Terminates an ongoing SCO connection and the associated virtual call.
*
* <p> Users can listen to {@link #ACTION_AUDIO_STATE_CHANGED}.
* If this function returns true, this intent will be broadcasted with
* {@link #EXTRA_STATE} set to {@link #STATE_AUDIO_DISCONNECTED}.
*
* @return true if successful, false if one of the following case applies
* - virtual voice call is not started or has ended
* - binder is dead or Bluetooth is disabled or other error
* @hide
*/
@RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
public boolean stopScoUsingVirtualVoiceCall() {
if (DBG) log("stopScoUsingVirtualVoiceCall()");
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
return service.stopScoUsingVirtualVoiceCall();
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
}
return false;
}
/**
* Notify Headset of phone state change.
* This is a backdoor for phone app to call BluetoothHeadset since
* there is currently not a good way to get precise call state change outside
* of phone app.
*
* @hide
*/
public void phoneStateChanged(int numActive, int numHeld, int callState, String number,
int type) {
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
service.phoneStateChanged(numActive, numHeld, callState, number, type);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
}
}
/**
* Send Headset of CLCC response
*
* @hide
*/
public void clccResponse(int index, int direction, int status, int mode, boolean mpty,
String number, int type) {
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
service.clccResponse(index, direction, status, mode, mpty, number, type);
} catch (RemoteException e) {
Log.e(TAG, e.toString());
}
} else {
Log.w(TAG, "Proxy not attached to service");
if (DBG) Log.d(TAG, Log.getStackTraceString(new Throwable()));
}
}
/**
* Sends a vendor-specific unsolicited result code to the headset.
*
* <p>The actual string to be sent is <code>command + ": " + arg</code>. For example, if {@code
* command} is {@link #VENDOR_RESULT_CODE_COMMAND_ANDROID} and {@code arg} is {@code "0"}, the
* string <code>"+ANDROID: 0"</code> will be sent.
*
* <p>Currently only {@link #VENDOR_RESULT_CODE_COMMAND_ANDROID} is allowed as {@code command}.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission.
*
* @param device Bluetooth headset.
* @param command A vendor-specific command.
* @param arg The argument that will be attached to the command.
* @return {@code false} if there is no headset connected, or if the command is not an allowed
* vendor-specific unsolicited result code, or on error. {@code true} otherwise.
* @throws IllegalArgumentException if {@code command} is {@code null}.
*/
public boolean sendVendorSpecificResultCode(BluetoothDevice device, String command,
String arg) {
if (DBG) {
log("sendVendorSpecificResultCode()");
}
if (command == null) {
throw new IllegalArgumentException("command is null");
}
final IBluetoothHeadset service = mService;
if (service != null && isEnabled() && isValidDevice(device)) {
try {
return service.sendVendorSpecificResultCode(device, command, arg);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
}
}
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
}
return false;
}
/**
* Select a connected device as active.
*
* The active device selection is per profile. An active device's
* purpose is profile-specific. For example, in HFP and HSP profiles,
* it is the device used for phone call audio. 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_ACTIVE_DEVICE_CHANGED} intent will be broadcasted
* with the active device.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH_ADMIN}
* permission.
*
* @param device Remote Bluetooth Device, could be null if phone call audio should not be
* streamed to a headset
* @return false on immediate error, true otherwise
* @hide
*/
@RequiresPermission(android.Manifest.permission.BLUETOOTH_ADMIN)
public boolean setActiveDevice(@Nullable BluetoothDevice device) {
if (DBG) {
Log.d(TAG, "setActiveDevice: " + device);
}
final IBluetoothHeadset service = mService;
if (service != null && isEnabled() && (device == null || isValidDevice(device))) {
try {
return service.setActiveDevice(device);
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
}
}
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
}
return false;
}
/**
* Get the connected device that is active.
*
* <p>Requires {@link android.Manifest.permission#BLUETOOTH}
* permission.
*
* @return the connected device that is active or null if no device
* is active.
* @hide
*/
@RequiresPermission(android.Manifest.permission.BLUETOOTH)
public BluetoothDevice getActiveDevice() {
if (VDBG) {
Log.d(TAG, "getActiveDevice");
}
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
return service.getActiveDevice();
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
}
}
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
}
return null;
}
/**
* Check if in-band ringing is currently enabled. In-band ringing could be disabled during an
* active connection.
*
* @return true if in-band ringing is enabled, false if in-band ringing is disabled
* @hide
*/
@RequiresPermission(android.Manifest.permission.BLUETOOTH)
public boolean isInbandRingingEnabled() {
if (DBG) {
log("isInbandRingingEnabled()");
}
final IBluetoothHeadset service = mService;
if (service != null && isEnabled()) {
try {
return service.isInbandRingingEnabled();
} catch (RemoteException e) {
Log.e(TAG, Log.getStackTraceString(new Throwable()));
}
}
if (service == null) {
Log.w(TAG, "Proxy not attached to service");
}
return false;
}
/**
* Check if in-band ringing is supported for this platform.
*
* @return true if in-band ringing is supported, false if in-band ringing is not supported
* @hide
*/
public static boolean isInbandRingingSupported(Context context) {
return context.getResources().getBoolean(
com.android.internal.R.bool.config_bluetooth_hfp_inband_ringing_support);
}
private final IBluetoothProfileServiceConnection mConnection =
new IBluetoothProfileServiceConnection.Stub() {
@Override
public void onServiceConnected(ComponentName className, IBinder service) {
if (DBG) Log.d(TAG, "Proxy object connected");
mService = IBluetoothHeadset.Stub.asInterface(Binder.allowBlocking(service));
mHandler.sendMessage(mHandler.obtainMessage(
MESSAGE_HEADSET_SERVICE_CONNECTED));
}
@Override
public void onServiceDisconnected(ComponentName className) {
if (DBG) Log.d(TAG, "Proxy object disconnected");
mService = null;
mHandler.sendMessage(mHandler.obtainMessage(
MESSAGE_HEADSET_SERVICE_DISCONNECTED));
}
};
private boolean isEnabled() {
return mAdapter.getState() == BluetoothAdapter.STATE_ON;
}
private boolean isDisabled() {
return mAdapter.getState() == BluetoothAdapter.STATE_OFF;
}
private static boolean isValidDevice(BluetoothDevice device) {
return device != null && BluetoothAdapter.checkBluetoothAddress(device.getAddress());
}
private static void log(String msg) {
Log.d(TAG, msg);
}
private final Handler mHandler = new Handler(Looper.getMainLooper()) {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_HEADSET_SERVICE_CONNECTED: {
if (mServiceListener != null) {
mServiceListener.onServiceConnected(BluetoothProfile.HEADSET,
BluetoothHeadset.this);
}
break;
}
case MESSAGE_HEADSET_SERVICE_DISCONNECTED: {
if (mServiceListener != null) {
mServiceListener.onServiceDisconnected(BluetoothProfile.HEADSET);
}
break;
}
}
}
};
}