Merge "Added documentation on AvrcpTargetService." into main am: 576f236f39 am: 03e3cde1c6 (ca27f54b) · Commits · e / os / android_packages_modules_Bluetooth

android/app/src/com/android/bluetooth/avrcp/AvrcpTargetService.java

+79 −35

Original line number	Diff line number	Diff line
		@@ -102,10 +102,12 @@ public class AvrcpTargetService extends ProfileService {
		super(ctx);
		}

		/** Checks for profile enabled state in Bluetooth sysprops. */
		public static boolean isEnabled() {
		return BluetoothProperties.isProfileAvrcpTargetEnabled().orElse(false);
		}

		/** Callbacks from {@link MediaPlayerList} to update the MediaData and folder updates. */
		class ListCallback implements MediaPlayerList.MediaUpdateCallback {
		@Override
		public void run(MediaData data) {
		@@ -131,6 +133,10 @@ public class AvrcpTargetService extends ProfileService {
		}
		}

		/**
		* Listens for {@link AudioManager.ACTION_VOLUME_CHANGED} events to update {@link
		* AvrcpVolumeManager}.
		*/
		private class AvrcpBroadcastReceiver extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
		@@ -150,21 +156,22 @@ public class AvrcpTargetService extends ProfileService {
		}
		}

		/**
		* Set the AvrcpTargetService instance.
		*/
		/** Sets the AvrcpTargetService instance. */
		@VisibleForTesting
		public static void set(AvrcpTargetService instance) {
		sInstance = instance;
		}

		/**
		* Get the AvrcpTargetService instance. Returns null if the service hasn't been initialized.
		* Returns the {@link AvrcpTargetService} instance.
		*
		* <p>Returns null if the service hasn't been initialized.
		*/
		public static AvrcpTargetService get() {
		return sInstance;
		}

		/** Returns the {@link AvrcpCoverArtService} instance. */
		public AvrcpCoverArtService getCoverArtService() {
		return mAvrcpCoverArtService;
		}
		@@ -264,6 +271,7 @@ public class AvrcpTargetService extends ProfileService {
		mReceiver = null;
		}

		/** Returns the active A2DP {@link BluetoothDevice} */
		private BluetoothDevice getA2dpActiveDevice() {
		A2dpService service = mFactory.getA2dpService();
		if (service == null) {
		@@ -272,6 +280,12 @@ public class AvrcpTargetService extends ProfileService {
		return service.getActiveDevice();
		}

		/**
		* Sets a {@link BluetoothDevice} as active A2DP device.
		*
		* <p>This will be called by the native stack when a play event is received from a remote
		* device. See packages/modules/Bluetooth/system/profile/avrcp/device.cc.
		*/
		private void setA2dpActiveDevice(@NonNull BluetoothDevice device) {
		A2dpService service = A2dpService.getA2dpService();
		if (service == null) {
		@@ -281,20 +295,20 @@ public class AvrcpTargetService extends ProfileService {
		service.setActiveDevice(device);
		}

		/** Informs {@link AvrcpVolumeManager} that a new device is connected */
		void deviceConnected(BluetoothDevice device, boolean absoluteVolume) {
		Log.i(TAG, "deviceConnected: device=" + device + " absoluteVolume=" + absoluteVolume);
		mVolumeManager.deviceConnected(device, absoluteVolume);
		MetricsLogger.logProfileConnectionEvent(BluetoothMetricsProto.ProfileId.AVRCP);
		}

		/** Informs {@link AvrcpVolumeManager} that a device is disconnected */
		void deviceDisconnected(BluetoothDevice device) {
		Log.i(TAG, "deviceDisconnected: device=" + device);
		mVolumeManager.deviceDisconnected(device);
		}

		/**
		* Remove the stored volume for a device.
		*/
		/** Removes the stored volume for a device. */
		public void removeStoredVolumeForDevice(BluetoothDevice device) {
		if (device == null) return;

		@@ -302,8 +316,9 @@ public class AvrcpTargetService extends ProfileService {
		}

		/**
		* Retrieve the remembered volume for a device. Returns -1 if there is no volume for the
		* device.
		* Returns the remembered volume for a device or -1 if none.
		*
		* <p>See {@link AvrcpVolumeManager}.
		*/
		public int getRememberedVolumeForDevice(BluetoothDevice device) {
		if (device == null) return -1;
		@@ -325,12 +340,15 @@ public class AvrcpTargetService extends ProfileService {
		}
		}
		}

		/**
		* Handle when Active Device changes in A2DP.
		* Handles active device changes in A2DP.
		*
		* <p>Signals {@link AvrcpVolumeManager} that the current A2DP active device has changed which
		* will then inform {@link AudioManager} about its absolute volume support. If absolute volume
		* is supported, it will also set the volume level on the remote device.
		*
		* <p>Signal to the service that the current audio out device has changed and to inform the
		* audio service whether the new device supports absolute volume. If it does, also set the
		* absolute volume level on the remote device.
		* <p>Informs all remote devices that there is a play status update.
		*/
		public void handleA2dpActiveDeviceChanged(BluetoothDevice device) {
		mVolumeManager.volumeDeviceSwitched(device);
		@@ -340,7 +358,7 @@ public class AvrcpTargetService extends ProfileService {
		}
		}

		// TODO (apanicke): Add checks to rejectlist Absolute Volume devices if they behave poorly.
		/** Informs {@link AvrcpVolumeManager} that a remote device requests a volume change */
		void setVolume(int avrcpVolume) {
		BluetoothDevice activeDevice = getA2dpActiveDevice();
		if (activeDevice == null) {
		@@ -352,8 +370,11 @@ public class AvrcpTargetService extends ProfileService {
		}

		/**
		* Set the volume on the remote device. Does nothing if the device doesn't support absolute
		* volume.
		* Sends a volume change request to the remote device.
		*
		* <p>Does nothing if the device doesn't support absolute volume.
		*
		* <p>The remote device that will receive the request is the A2DP active device.
		*/
		public void sendVolumeChanged(int deviceVolume) {
		BluetoothDevice activeDevice = getA2dpActiveDevice();
		@@ -365,6 +386,12 @@ public class AvrcpTargetService extends ProfileService {
		mVolumeManager.sendVolumeChanged(activeDevice, deviceVolume);
		}

		/**
		* Returns the current song info from the active player in {@link MediaPlayerList}.
		*
		* <p>If a {@link com.android.bluetooth.audio_util.Image} is present in the {@link Metadata},
		* add its handle from {@link AvrcpCoverArtService}.
		*/
		Metadata getCurrentSongInfo() {
		Metadata metadata = mMediaPlayerList.getCurrentSongInfo();
		if (mAvrcpCoverArtService != null && metadata.image != null) {
		@@ -374,11 +401,13 @@ public class AvrcpTargetService extends ProfileService {
		return metadata;
		}

		/** Returns the current play status of the active player from {@link MediaPlayerList}. */
		PlayStatus getPlayState() {
		return PlayStatus.fromPlaybackState(mMediaPlayerList.getCurrentPlayStatus(),
		Long.parseLong(getCurrentSongInfo().duration));
		}

		/** Returns the current media ID of the active player from {@link MediaPlayerList}. */
		String getCurrentMediaId() {
		String id = mMediaPlayerList.getCurrentMediaId();
		if (id != null && !id.isEmpty()) return id;
		@@ -390,6 +419,12 @@ public class AvrcpTargetService extends ProfileService {
		return "error";
		}

		/**
		* Returns the playing queue of the active player from {@link MediaPlayerList}.
		*
		* <p>If a {@link com.android.bluetooth.audio_util.Image} is present in the {@link Metadata} of
		* the queued items, add its handle from {@link AvrcpCoverArtService}.
		*/
		List<Metadata> getNowPlayingList() {
		String currentMediaId = getCurrentMediaId();
		Metadata currentTrack = null;
		@@ -418,29 +453,44 @@ public class AvrcpTargetService extends ProfileService {
		return nowPlayingList;
		}

		/**
		* Returns the active browsable player ID from {@link MediaPlayerList}.
		*
		* <p>Note: Currently, only returns the Bluetooth player ID. Browsable players are
		* subdirectories of the Bluetooth player. See {@link MediaPlayerList} class description.
		*/
		int getCurrentPlayerId() {
		return mMediaPlayerList.getCurrentPlayerId();
		}

		// TODO (apanicke): Have the Player List also contain info about the play state of each player
		/**
		* Returns the list of browsable players from {@link MediaPlayerList}.
		*
		* <p>Note: Currently, only returns the Bluetooth player. Browsable players are subdirectories
		* of the Bluetooth player. See {@link MediaPlayerList} class description.
		*/
		List<PlayerInfo> getMediaPlayerList() {
		return mMediaPlayerList.getMediaPlayerList();
		}

		/** See {@link MediaPlayerList#getPlayerRoot}. */
		void getPlayerRoot(int playerId, MediaPlayerList.GetPlayerRootCallback cb) {
		mMediaPlayerList.getPlayerRoot(playerId, cb);
		}

		/** See {@link MediaPlayerList#getFolderItems}. */
		void getFolderItems(int playerId, String mediaId, MediaPlayerList.GetFolderItemsCallback cb) {
		mMediaPlayerList.getFolderItems(playerId, mediaId, cb);
		}

		/** See {@link MediaPlayerList#playItem}. */
		void playItem(int playerId, boolean nowPlaying, String mediaId) {
		// NOTE: playerId isn't used if nowPlaying is true, since its assumed to be the current
		// active player
		mMediaPlayerList.playItem(playerId, nowPlaying, mediaId);
		}

		/** Informs {@link AudioManager} of an incoming key event from a remote device. */
		void sendMediaKeyEvent(int key, boolean pushed) {
		BluetoothDevice activeDevice = getA2dpActiveDevice();
		MediaPlayerWrapper player = mMediaPlayerList.getActivePlayer();
		@@ -460,6 +510,12 @@ public class AvrcpTargetService extends ProfileService {
		mAudioManager.dispatchMediaKeyEvent(event);
		}

		/**
		* Sets a {@link BluetoothDevice} as active A2DP device.
		*
		* <p>This will be called by the native stack when a play event is received from a remote
		* device. See packages/modules/Bluetooth/system/profile/avrcp/device.cc.
		*/
		void setActiveDevice(BluetoothDevice device) {
		Log.i(TAG, "setActiveDevice: device=" + device);
		if (device == null) {
		@@ -469,37 +525,27 @@ public class AvrcpTargetService extends ProfileService {
		setA2dpActiveDevice(device);
		}

		/**
		* Called from native to update current active player shuffle mode.
		*/
		/** Called from native to update current active player shuffle mode. */
		boolean setShuffleMode(int shuffleMode) {
		return mPlayerSettingsManager.setPlayerShuffleMode(shuffleMode);
		}

		/**
		* Called from native to update current active player repeat mode.
		*/
		/** Called from native to update current active player repeat mode. */
		boolean setRepeatMode(int repeatMode) {
		return mPlayerSettingsManager.setPlayerRepeatMode(repeatMode);
		}

		/**
		* Called from native to get the current active player repeat mode.
		*/
		/** Called from native to get the current active player repeat mode. */
		int getRepeatMode() {
		return mPlayerSettingsManager.getPlayerRepeatMode();
		}

		/**
		* Called from native to get the current active player shuffle mode.
		*/
		/** Called from native to get the current active player shuffle mode. */
		int getShuffleMode() {
		return mPlayerSettingsManager.getPlayerShuffleMode();
		}

		/**
		* Called from player callback to indicate new settings to remote device.
		*/
		/** Called from player callback to indicate new settings to remote device. */
		public void sendPlayerSettings(int repeatMode, int shuffleMode) {
		if (mNativeInterface == null) {
		Log.i(TAG, "Tried to send Player Settings while native interface is null");
		@@ -509,9 +555,7 @@ public class AvrcpTargetService extends ProfileService {
		mNativeInterface.sendPlayerSettings(repeatMode, shuffleMode);
		}

		/**
		* Dump debugging information to the string builder
		*/
		/** Dump debugging information to the string builder */
		public void dump(StringBuilder sb) {
		sb.append("\nProfile: AvrcpTargetService:\n");
		if (sInstance == null) {