| /* |
| * Copyright 2021 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 static android.bluetooth.BluetoothUtils.getSyncTimeout; |
| |
| import android.annotation.CallbackExecutor; |
| import android.annotation.IntDef; |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.RequiresPermission; |
| import android.annotation.SuppressLint; |
| import android.annotation.SystemApi; |
| import android.bluetooth.annotations.RequiresBluetoothConnectPermission; |
| 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.modules.utils.SynchronousResultReceiver; |
| |
| 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; |
| import java.util.concurrent.TimeoutException; |
| |
| /** |
| * This class provides the public APIs to control the BAP Broadcast Source profile. |
| * |
| * <p>BluetoothLeBroadcast is a proxy object for controlling the Bluetooth LE Broadcast Source |
| * Service via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get the BluetoothLeBroadcast |
| * proxy object. |
| * |
| * @hide |
| */ |
| @SystemApi |
| public final class BluetoothLeBroadcast implements AutoCloseable, BluetoothProfile { |
| private static final String TAG = "BluetoothLeBroadcast"; |
| private static final boolean DBG = true; |
| private static final boolean VDBG = false; |
| |
| private CloseGuard mCloseGuard; |
| |
| private final BluetoothAdapter mAdapter; |
| private final AttributionSource mAttributionSource; |
| private final BluetoothProfileConnector<IBluetoothLeAudio> mProfileConnector = |
| new BluetoothProfileConnector(this, BluetoothProfile.LE_AUDIO_BROADCAST, |
| "BluetoothLeAudioBroadcast", IBluetoothLeAudio.class.getName()) { |
| @Override |
| public IBluetoothLeAudio getServiceInterface(IBinder service) { |
| return IBluetoothLeAudio.Stub.asInterface(service); |
| } |
| }; |
| |
| private final Map<Callback, Executor> mCallbackExecutorMap = new HashMap<>(); |
| |
| @SuppressLint("AndroidFrameworkBluetoothPermission") |
| private final IBluetoothLeBroadcastCallback mCallback = |
| new IBluetoothLeBroadcastCallback.Stub() { |
| @Override |
| public void onBroadcastStarted(int reason, int broadcastId) { |
| for (Map.Entry<BluetoothLeBroadcast.Callback, Executor> callbackExecutorEntry: |
| mCallbackExecutorMap.entrySet()) { |
| BluetoothLeBroadcast.Callback callback = callbackExecutorEntry.getKey(); |
| Executor executor = callbackExecutorEntry.getValue(); |
| executor.execute(() -> callback.onBroadcastStarted(reason, broadcastId)); |
| } |
| } |
| |
| @Override |
| public void onBroadcastStartFailed(int reason) { |
| for (Map.Entry<BluetoothLeBroadcast.Callback, Executor> callbackExecutorEntry: |
| mCallbackExecutorMap.entrySet()) { |
| BluetoothLeBroadcast.Callback callback = callbackExecutorEntry.getKey(); |
| Executor executor = callbackExecutorEntry.getValue(); |
| executor.execute(() -> callback.onBroadcastStartFailed(reason)); |
| } |
| } |
| |
| @Override |
| public void onBroadcastStopped(int reason, int broadcastId) { |
| for (Map.Entry<BluetoothLeBroadcast.Callback, Executor> callbackExecutorEntry: |
| mCallbackExecutorMap.entrySet()) { |
| BluetoothLeBroadcast.Callback callback = callbackExecutorEntry.getKey(); |
| Executor executor = callbackExecutorEntry.getValue(); |
| executor.execute(() -> callback.onBroadcastStopped(reason, broadcastId)); |
| } |
| } |
| |
| @Override |
| public void onBroadcastStopFailed(int reason) { |
| for (Map.Entry<BluetoothLeBroadcast.Callback, Executor> callbackExecutorEntry: |
| mCallbackExecutorMap.entrySet()) { |
| BluetoothLeBroadcast.Callback callback = callbackExecutorEntry.getKey(); |
| Executor executor = callbackExecutorEntry.getValue(); |
| executor.execute(() -> callback.onBroadcastStopFailed(reason)); |
| } |
| } |
| |
| @Override |
| public void onPlaybackStarted(int reason, int broadcastId) { |
| for (Map.Entry<BluetoothLeBroadcast.Callback, Executor> callbackExecutorEntry: |
| mCallbackExecutorMap.entrySet()) { |
| BluetoothLeBroadcast.Callback callback = callbackExecutorEntry.getKey(); |
| Executor executor = callbackExecutorEntry.getValue(); |
| executor.execute(() -> callback.onPlaybackStarted(reason, broadcastId)); |
| } |
| } |
| |
| @Override |
| public void onPlaybackStopped(int reason, int broadcastId) { |
| for (Map.Entry<BluetoothLeBroadcast.Callback, Executor> callbackExecutorEntry: |
| mCallbackExecutorMap.entrySet()) { |
| BluetoothLeBroadcast.Callback callback = callbackExecutorEntry.getKey(); |
| Executor executor = callbackExecutorEntry.getValue(); |
| executor.execute(() -> callback.onPlaybackStopped(reason, broadcastId)); |
| } |
| } |
| |
| @Override |
| public void onBroadcastUpdated(int reason, int broadcastId) { |
| for (Map.Entry<BluetoothLeBroadcast.Callback, Executor> callbackExecutorEntry: |
| mCallbackExecutorMap.entrySet()) { |
| BluetoothLeBroadcast.Callback callback = callbackExecutorEntry.getKey(); |
| Executor executor = callbackExecutorEntry.getValue(); |
| executor.execute(() -> callback.onBroadcastUpdated(reason, broadcastId)); |
| } |
| } |
| |
| @Override |
| public void onBroadcastUpdateFailed(int reason, int broadcastId) { |
| for (Map.Entry<BluetoothLeBroadcast.Callback, Executor> callbackExecutorEntry: |
| mCallbackExecutorMap.entrySet()) { |
| BluetoothLeBroadcast.Callback callback = callbackExecutorEntry.getKey(); |
| Executor executor = callbackExecutorEntry.getValue(); |
| executor.execute(() -> callback.onBroadcastUpdateFailed(reason, broadcastId)); |
| } |
| } |
| |
| @Override |
| public void onBroadcastMetadataChanged(int broadcastId, |
| BluetoothLeBroadcastMetadata metadata) { |
| for (Map.Entry<BluetoothLeBroadcast.Callback, Executor> callbackExecutorEntry: |
| mCallbackExecutorMap.entrySet()) { |
| BluetoothLeBroadcast.Callback callback = callbackExecutorEntry.getKey(); |
| Executor executor = callbackExecutorEntry.getValue(); |
| executor.execute(() -> callback.onBroadcastMetadataChanged(broadcastId, metadata)); |
| } |
| } |
| }; |
| |
| @SuppressLint("AndroidFrameworkBluetoothPermission") |
| private final IBluetoothStateChangeCallback mBluetoothStateChangeCallback = |
| new IBluetoothStateChangeCallback.Stub() { |
| public void onBluetoothStateChange(boolean up) { |
| if (DBG) Log.d(TAG, "onBluetoothStateChange: up=" + up); |
| if (up) { |
| // re-register the service-to-app callback |
| synchronized (mCallbackExecutorMap) { |
| if (!mCallbackExecutorMap.isEmpty()) { |
| try { |
| final IBluetoothLeAudio service = getService(); |
| if (service != null) { |
| final SynchronousResultReceiver<Integer> recv = |
| SynchronousResultReceiver.get(); |
| service.registerLeBroadcastCallback(mCallback, |
| mAttributionSource, recv); |
| recv.awaitResultNoInterrupt(getSyncTimeout()) |
| .getValue(null); |
| } |
| } catch (TimeoutException e) { |
| Log.e(TAG, "onBluetoothServiceUp: Failed to register " |
| + "Le Broadcaster callback", e); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| } |
| } |
| } |
| }; |
| |
| /** |
| * Interface for receiving events related to Broadcast Source |
| * @hide |
| */ |
| @SystemApi |
| public interface Callback { |
| /** @hide */ |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef(value = { |
| BluetoothStatusCodes.ERROR_UNKNOWN, |
| BluetoothStatusCodes.REASON_LOCAL_APP_REQUEST, |
| BluetoothStatusCodes.REASON_LOCAL_STACK_REQUEST, |
| BluetoothStatusCodes.REASON_SYSTEM_POLICY, |
| BluetoothStatusCodes.ERROR_HARDWARE_GENERIC, |
| BluetoothStatusCodes.ERROR_BAD_PARAMETERS, |
| BluetoothStatusCodes.ERROR_LOCAL_NOT_ENOUGH_RESOURCES, |
| BluetoothStatusCodes.ERROR_LE_BROADCAST_INVALID_CODE, |
| BluetoothStatusCodes.ERROR_LE_BROADCAST_INVALID_BROADCAST_ID, |
| BluetoothStatusCodes.ERROR_LE_CONTENT_METADATA_INVALID_PROGRAM_INFO, |
| BluetoothStatusCodes.ERROR_LE_CONTENT_METADATA_INVALID_LANGUAGE, |
| BluetoothStatusCodes.ERROR_LE_CONTENT_METADATA_INVALID_OTHER, |
| }) |
| @interface Reason {} |
| |
| /** |
| * Callback invoked when broadcast is started, but audio may not be playing. |
| * |
| * Caller should wait for |
| * {@link #onBroadcastMetadataChanged(int, BluetoothLeBroadcastMetadata)} |
| * for the updated metadata |
| * |
| * @param reason for broadcast start |
| * @param broadcastId as defined by the Basic Audio Profile |
| * @hide |
| */ |
| @SystemApi |
| void onBroadcastStarted(@Reason int reason, int broadcastId); |
| |
| /** |
| * Callback invoked when broadcast failed to start |
| * |
| * @param reason for broadcast start failure |
| * @hide |
| */ |
| @SystemApi |
| void onBroadcastStartFailed(@Reason int reason); |
| |
| /** |
| * Callback invoked when broadcast is stopped |
| * |
| * @param reason for broadcast stop |
| * @hide |
| */ |
| @SystemApi |
| void onBroadcastStopped(@Reason int reason, int broadcastId); |
| |
| /** |
| * Callback invoked when broadcast failed to stop |
| * |
| * @param reason for broadcast stop failure |
| * @hide |
| */ |
| @SystemApi |
| void onBroadcastStopFailed(@Reason int reason); |
| |
| /** |
| * Callback invoked when broadcast audio is playing |
| * |
| * @param reason for playback start |
| * @param broadcastId as defined by the Basic Audio Profile |
| * @hide |
| */ |
| @SystemApi |
| void onPlaybackStarted(@Reason int reason, int broadcastId); |
| |
| /** |
| * Callback invoked when broadcast audio is not playing |
| * |
| * @param reason for playback stop |
| * @param broadcastId as defined by the Basic Audio Profile |
| * @hide |
| */ |
| @SystemApi |
| void onPlaybackStopped(@Reason int reason, int broadcastId); |
| |
| /** |
| * Callback invoked when encryption is enabled |
| * |
| * @param reason for encryption enable |
| * @param broadcastId as defined by the Basic Audio Profile |
| * @hide |
| */ |
| @SystemApi |
| void onBroadcastUpdated(@Reason int reason, int broadcastId); |
| |
| /** |
| * Callback invoked when Broadcast Source failed to update |
| * |
| * @param reason for update failure |
| * @param broadcastId as defined by the Basic Audio Profile |
| * @hide |
| */ |
| @SystemApi |
| void onBroadcastUpdateFailed(int reason, int broadcastId); |
| |
| /** |
| * Callback invoked when Broadcast Source metadata is updated |
| * |
| * @param metadata updated Broadcast Source metadata |
| * @param broadcastId as defined by the Basic Audio Profile |
| * @hide |
| */ |
| @SystemApi |
| void onBroadcastMetadataChanged(int broadcastId, |
| @NonNull BluetoothLeBroadcastMetadata metadata); |
| } |
| |
| /** |
| * Create a BluetoothLeBroadcast proxy object for interacting with the local LE Audio Broadcast |
| * Source service. |
| * |
| * @param context for to operate this API class |
| * @param listener listens for service callbacks across binder |
| * @hide |
| */ |
| /*package*/ BluetoothLeBroadcast(Context context, BluetoothProfile.ServiceListener listener) { |
| mAdapter = BluetoothAdapter.getDefaultAdapter(); |
| mAttributionSource = mAdapter.getAttributionSource(); |
| mProfileConnector.connect(context, listener); |
| |
| IBluetoothManager mgr = mAdapter.getBluetoothManager(); |
| if (mgr != null) { |
| try { |
| mgr.registerStateChangeCallback(mBluetoothStateChangeCallback); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| |
| mCloseGuard = new CloseGuard(); |
| mCloseGuard.open("close"); |
| } |
| |
| /** |
| * @hide |
| */ |
| protected void finalize() { |
| if (mCloseGuard != null) { |
| mCloseGuard.warnIfOpen(); |
| } |
| close(); |
| } |
| |
| /** |
| * Not supported since LE Audio Broadcasts do not establish a connection. |
| * |
| * @hide |
| */ |
| @Override |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(allOf = { |
| android.Manifest.permission.BLUETOOTH_CONNECT, |
| android.Manifest.permission.BLUETOOTH_PRIVILEGED, |
| }) |
| public int getConnectionState(@NonNull BluetoothDevice device) { |
| throw new UnsupportedOperationException("LE Audio Broadcasts are not connection-oriented."); |
| } |
| |
| /** |
| * Not supported since LE Audio Broadcasts do not establish a connection. |
| * |
| * @hide |
| */ |
| @Override |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(allOf = { |
| android.Manifest.permission.BLUETOOTH_CONNECT, |
| android.Manifest.permission.BLUETOOTH_PRIVILEGED, |
| }) |
| public @NonNull List<BluetoothDevice> getDevicesMatchingConnectionStates( |
| @NonNull int[] states) { |
| throw new UnsupportedOperationException("LE Audio Broadcasts are not connection-oriented."); |
| } |
| |
| /** |
| * Not supported since LE Audio Broadcasts do not establish a connection. |
| * |
| * @hide |
| */ |
| @Override |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(allOf = { |
| android.Manifest.permission.BLUETOOTH_CONNECT, |
| android.Manifest.permission.BLUETOOTH_PRIVILEGED, |
| }) |
| public @NonNull List<BluetoothDevice> getConnectedDevices() { |
| throw new UnsupportedOperationException("LE Audio Broadcasts are not connection-oriented."); |
| } |
| |
| /** |
| * Register a {@link Callback} that will be invoked during the operation of this profile. |
| * |
| * Repeated registration of the same <var>callback</var> object after the first call to this |
| * method will result with IllegalArgumentException being thrown, 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. |
| * |
| * @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, or |
| * IllegalArgumentException if the same <var>callback<var> 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) { |
| final SynchronousResultReceiver<Integer> recv = |
| SynchronousResultReceiver.get(); |
| service.registerLeBroadcastCallback(mCallback, mAttributionSource, recv); |
| recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(null); |
| } |
| } catch (TimeoutException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| |
| // 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 or 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) { |
| final SynchronousResultReceiver<Integer> recv = SynchronousResultReceiver.get(); |
| service.unregisterLeBroadcastCallback(mCallback, mAttributionSource, recv); |
| recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(null); |
| } |
| } catch (TimeoutException | IllegalStateException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| } |
| |
| /** |
| * Start broadcasting to nearby devices using <var>broadcastCode</var> and |
| * <var>contentMetadata</var> |
| * |
| * Encryption will be enabled when <var>broadcastCode</var> is not null. |
| * |
| * <p>As defined in Volume 3, Part C, Section 3.2.6 of Bluetooth Core Specification, Version |
| * 5.3, Broadcast Code is used to encrypt a broadcast audio stream. |
| * <p>It must be a UTF-8 string that has at least 4 octets and should not exceed 16 octets. |
| * |
| * If the provided <var>broadcastCode</var> is non-null and does not meet the above |
| * requirements, encryption will fail to enable with reason code |
| * {@link BluetoothStatusCodes#ERROR_LE_BROADCAST_INVALID_CODE} |
| * |
| * Caller can set content metadata such as program information string in |
| * <var>contentMetadata</var> |
| * |
| * On success, {@link Callback#onBroadcastStarted(int, int)} will be invoked with |
| * {@link BluetoothStatusCodes#REASON_LOCAL_APP_REQUEST} reason code. |
| * On failure, {@link Callback#onBroadcastStartFailed(int)} will be invoked with reason code. |
| * |
| * In particular, when the number of Broadcast Sources reaches |
| * {@link #getMaximumNumberOfBroadcast()}, this method will fail with |
| * {@link BluetoothStatusCodes#ERROR_LOCAL_NOT_ENOUGH_RESOURCES} |
| * |
| * After broadcast is started, |
| * {@link Callback#onBroadcastMetadataChanged(int, BluetoothLeBroadcastMetadata)} |
| * will be invoked to expose the latest Broadcast Group metadata that can be shared out of band |
| * to set up Broadcast Sink without scanning. |
| * |
| * Alternatively, one can also get the latest Broadcast Source meta via |
| * {@link #getAllBroadcastMetadata()} |
| * |
| * @param contentMetadata metadata for the default Broadcast subgroup |
| * @param broadcastCode Encryption will be enabled when <var>broadcastCode</var> is not null |
| * @throws IllegalStateException if callback was not registered |
| * @throws NullPointerException if <var>contentMetadata</var> is null |
| * @hide |
| */ |
| @SystemApi |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(allOf = { |
| android.Manifest.permission.BLUETOOTH_CONNECT, |
| android.Manifest.permission.BLUETOOTH_PRIVILEGED, |
| }) |
| public void startBroadcast(@NonNull BluetoothLeAudioContentMetadata contentMetadata, |
| @Nullable byte[] broadcastCode) { |
| Objects.requireNonNull(contentMetadata, "contentMetadata cannot be null"); |
| |
| if (DBG) log("startBroadcasting"); |
| final IBluetoothLeAudio service = getService(); |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| service.startBroadcast(contentMetadata, broadcastCode, mAttributionSource); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| } |
| |
| /** |
| * Update the broadcast with <var>broadcastId</var> with new <var>contentMetadata</var> |
| * |
| * On success, {@link Callback#onBroadcastUpdated(int, int)} will be invoked with reason code |
| * {@link BluetoothStatusCodes#REASON_LOCAL_APP_REQUEST}. |
| * On failure, {@link Callback#onBroadcastUpdateFailed(int, int)} will be invoked with reason |
| * code |
| * |
| * @param broadcastId broadcastId as defined by the Basic Audio Profile |
| * @param contentMetadata updated metadata for the default Broadcast subgroup |
| * @throws IllegalStateException if callback was not registered |
| * @throws NullPointerException if <var>contentMetadata</var> is null |
| * @hide |
| */ |
| @SystemApi |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(allOf = { |
| android.Manifest.permission.BLUETOOTH_CONNECT, |
| android.Manifest.permission.BLUETOOTH_PRIVILEGED, |
| }) |
| public void updateBroadcast(int broadcastId, |
| @NonNull BluetoothLeAudioContentMetadata contentMetadata) { |
| Objects.requireNonNull(contentMetadata, "contentMetadata cannot be null"); |
| |
| if (DBG) log("updateBroadcast"); |
| final IBluetoothLeAudio service = getService(); |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| service.updateBroadcast(broadcastId, contentMetadata, mAttributionSource); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| } |
| |
| /** |
| * Stop broadcasting. |
| * |
| * On success, {@link Callback#onBroadcastStopped(int, int)} will be invoked with reason code |
| * {@link BluetoothStatusCodes#REASON_LOCAL_APP_REQUEST} and the <var>broadcastId</var> |
| * On failure, {@link Callback#onBroadcastStopFailed(int)} will be invoked with reason code |
| * |
| * @param broadcastId as defined by the Basic Audio Profile |
| * @throws IllegalStateException if callback was not registered |
| * @hide |
| */ |
| @SystemApi |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(allOf = { |
| android.Manifest.permission.BLUETOOTH_CONNECT, |
| android.Manifest.permission.BLUETOOTH_PRIVILEGED, |
| }) |
| public void stopBroadcast(int broadcastId) { |
| if (DBG) log("disableBroadcastMode"); |
| final IBluetoothLeAudio service = getService(); |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| service.stopBroadcast(broadcastId, mAttributionSource); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| } |
| |
| /** |
| * Return true if audio is being broadcasted on the Broadcast Source as identified by the |
| * <var>broadcastId</var> |
| * |
| * @param broadcastId as defined in the Basic Audio Profile |
| * @return true if audio is being broadcasted |
| * @hide |
| */ |
| @SystemApi |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(allOf = { |
| android.Manifest.permission.BLUETOOTH_CONNECT, |
| android.Manifest.permission.BLUETOOTH_PRIVILEGED, |
| }) |
| public boolean isPlaying(int broadcastId) { |
| final IBluetoothLeAudio service = getService(); |
| final boolean defaultValue = false; |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| final SynchronousResultReceiver<Boolean> recv = SynchronousResultReceiver.get(); |
| service.isPlaying(broadcastId, mAttributionSource, recv); |
| return recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue); |
| } catch (TimeoutException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| return defaultValue; |
| } |
| |
| /** |
| * Get {@link BluetoothLeBroadcastMetadata} for all Broadcast Groups currently running on |
| * this device |
| * |
| * @return list of {@link BluetoothLeBroadcastMetadata} |
| * @hide |
| */ |
| @SystemApi |
| @RequiresBluetoothConnectPermission |
| @RequiresPermission(allOf = { |
| android.Manifest.permission.BLUETOOTH_CONNECT, |
| android.Manifest.permission.BLUETOOTH_PRIVILEGED, |
| }) |
| public @NonNull List<BluetoothLeBroadcastMetadata> getAllBroadcastMetadata() { |
| final IBluetoothLeAudio service = getService(); |
| final List<BluetoothLeBroadcastMetadata> defaultValue = Collections.emptyList(); |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| final SynchronousResultReceiver<List<BluetoothLeBroadcastMetadata>> recv = |
| SynchronousResultReceiver.get(); |
| service.getAllBroadcastMetadata(mAttributionSource, recv); |
| return recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue); |
| } catch (TimeoutException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| return defaultValue; |
| } |
| |
| /** |
| * Get the maximum number of broadcast groups supported on this device |
| * @return maximum number of broadcast groups supported on this device |
| * @hide |
| */ |
| @SystemApi |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) |
| public int getMaximumNumberOfBroadcasts() { |
| final IBluetoothLeAudio service = getService(); |
| final int defaultValue = 1; |
| if (service == null) { |
| Log.w(TAG, "Proxy not attached to service"); |
| if (DBG) log(Log.getStackTraceString(new Throwable())); |
| } else if (isEnabled()) { |
| try { |
| final SynchronousResultReceiver<Integer> recv = SynchronousResultReceiver.get(); |
| service.getMaximumNumberOfBroadcasts(mAttributionSource, recv); |
| return recv.awaitResultNoInterrupt(getSyncTimeout()).getValue(defaultValue); |
| } catch (TimeoutException e) { |
| Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable())); |
| } catch (RemoteException e) { |
| throw e.rethrowFromSystemServer(); |
| } |
| } |
| return defaultValue; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @hide |
| */ |
| @Override |
| public void close() { |
| if (VDBG) log("close()"); |
| |
| IBluetoothManager mgr = mAdapter.getBluetoothManager(); |
| if (mgr != null) { |
| try { |
| mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback); |
| } catch (RemoteException e) { |
| Log.e(TAG, "", e); |
| } |
| } |
| |
| mProfileConnector.disconnect(); |
| } |
| |
| private boolean isEnabled() { |
| if (mAdapter.getState() == BluetoothAdapter.STATE_ON) return true; |
| return false; |
| } |
| |
| private IBluetoothLeAudio getService() { |
| return mProfileConnector.getService(); |
| } |
| |
| private static void log(String msg) { |
| Log.d(TAG, msg); |
| } |
| } |
