Add callback for AVRCP 1.6 support (c8d846ff) · Commits · e / os / android_frameworks_base

Android.mk

+1 −0

Original line number	Diff line number	Diff line
		@@ -404,6 +404,7 @@ LOCAL_SRC_FILES += \
		media/java/android/media/projection/IMediaProjectionManager.aidl \
		media/java/android/media/projection/IMediaProjectionWatcherCallback.aidl \
		media/java/android/media/session/IActiveSessionsListener.aidl \
		media/java/android/media/session/ICallback.aidl \
		media/java/android/media/session/ISessionController.aidl \
		media/java/android/media/session/ISessionControllerCallback.aidl \
		media/java/android/media/session/ISession.aidl \

media/java/android/media/session/ICallback.aidl

0 → 100644

+34 −0

Original line number	Diff line number	Diff line
		/* Copyright (C) 2016 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.media.session;

		import android.app.PendingIntent;
		import android.content.ComponentName;
		import android.media.session.MediaSession;
		import android.view.KeyEvent;

		/**
		* @hide
		*/
		oneway interface ICallback {
		void onMediaKeyEventDispatchedToMediaSession(in KeyEvent event,
		in MediaSession.Token sessionToken);
		void onMediaKeyEventDispatchedToMediaButtonReceiver(in KeyEvent event,
		in ComponentName mediaButtonReceiver);

		void onAddressedPlayerChangedToMediaSession(in MediaSession.Token sessionToken);
		void onAddressedPlayerChangedToMediaButtonReceiver(in ComponentName mediaButtonReceiver);
		}

media/java/android/media/session/ISessionManager.aidl

+4 −1

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@ package android.media.session;
		import android.content.ComponentName;
		import android.media.IRemoteVolumeController;
		import android.media.session.IActiveSessionsListener;
		import android.media.session.ICallback;
		import android.media.session.ISession;
		import android.media.session.ISessionCallback;
		import android.os.Bundle;
		@@ -41,4 +42,6 @@ interface ISessionManager {

		// For PhoneWindowManager to precheck media keys
		boolean isGlobalPriorityActive();

		void setCallback(in ICallback callback);
		}

media/java/android/media/session/MediaSessionManager.java

+135 −0

Original line number	Diff line number	Diff line
		@@ -57,6 +57,8 @@ public final class MediaSessionManager {

		private Context mContext;

		private CallbackImpl mCallback;

		/**
		* @hide
		*/
		@@ -312,6 +314,36 @@ public final class MediaSessionManager {
		return false;
		}

		/**
		* Set a {@link Callback}.
		*
		* <p>System can only have a single callback, and the callback can only be set by
		* Bluetooth service process.
		*
		* @param callback A {@link Callback}. {@code null} to reset.
		* @param handler The handler on which the callback should be invoked, or {@code null}
		* if the callback should be invoked on the calling thread's looper.
		* @hide
		*/
		public void setCallback(@Nullable Callback callback, @Nullable Handler handler) {
		synchronized (mLock) {
		try {
		if (callback == null) {
		mCallback = null;
		mService.setCallback(null);
		} else {
		if (handler == null) {
		handler = new Handler();
		}
		mCallback = new CallbackImpl(callback, handler);
		mService.setCallback(mCallback);
		}
		} catch (RemoteException e) {
		Log.e(TAG, "Failed to set media key callback", e);
		}
		}
		}

		/**
		* Listens for changes to the list of active sessions. This can be added
		* using {@link #addOnActiveSessionsChangedListener}.
		@@ -320,6 +352,56 @@ public final class MediaSessionManager {
		public void onActiveSessionsChanged(@Nullable List<MediaController> controllers);
		}

		/**
		* Callbacks for the media session service.
		*
		* <p>Called when a media key event is dispatched or the addressed player is changed.
		* The addressed player is either the media session or the media button receiver that will
		* receive media key events.
		* @hide
		*/
		public static abstract class Callback {
		/**
		* Called when a media key event is dispatched to the media session
		* through the media session service.
		*
		* @param event Dispatched media key event.
		* @param sessionToken The media session's token.
		*/
		public abstract void onMediaKeyEventDispatched(KeyEvent event,
		MediaSession.Token sessionToken);

		/**
		* Called when a media key event is dispatched to the media button receiver
		* through the media session service.
		* <p>MediaSessionService may broadcast key events to the media button receiver
		* when reviving playback after the media session is released.
		*
		* @param event Dispatched media key event.
		* @param mediaButtonReceiver The media button receiver.
		*/
		public abstract void onMediaKeyEventDispatched(KeyEvent event,
		ComponentName mediaButtonReceiver);

		/**
		* Called when the addressed player is changed to a media session.
		* <p>One of the {@ #onAddressedPlayerChanged} will be also called immediately after
		* {@link #setCallback} if the addressed player exists.
		*
		* @param sessionToken The media session's token.
		*/
		public abstract void onAddressedPlayerChanged(MediaSession.Token sessionToken);

		/**
		* Called when the addressed player is changed to the media button receiver.
		* <p>One of the {@ #onAddressedPlayerChanged} will be also called immediately after
		* {@link #setCallback} if the addressed player exists.
		*
		* @param mediaButtonReceiver The media button receiver.
		*/
		public abstract void onAddressedPlayerChanged(ComponentName mediaButtonReceiver);
		}

		private static final class SessionsChangedWrapper {
		private Context mContext;
		private OnActiveSessionsChangedListener mListener;
		@@ -360,4 +442,57 @@ public final class MediaSessionManager {
		mHandler = null;
		}
		}

		private static final class CallbackImpl extends ICallback.Stub {
		private final Callback mCallback;
		private final Handler mHandler;

		public CallbackImpl(@NonNull Callback callback, @NonNull Handler handler) {
		mCallback = callback;
		mHandler = handler;
		}

		@Override
		public void onMediaKeyEventDispatchedToMediaSession(KeyEvent event,
		MediaSession.Token sessionToken) {
		mHandler.post(new Runnable() {
		@Override
		public void run() {
		mCallback.onMediaKeyEventDispatched(event, sessionToken);
		}
		});
		}

		@Override
		public void onMediaKeyEventDispatchedToMediaButtonReceiver(KeyEvent event,
		ComponentName mediaButtonReceiver) {
		mHandler.post(new Runnable() {
		@Override
		public void run() {
		mCallback.onMediaKeyEventDispatched(event, mediaButtonReceiver);
		}
		});
		}

		@Override
		public void onAddressedPlayerChangedToMediaSession(MediaSession.Token sessionToken) {
		mHandler.post(new Runnable() {
		@Override
		public void run() {
		mCallback.onAddressedPlayerChanged(sessionToken);
		}
		});
		}

		@Override
		public void onAddressedPlayerChangedToMediaButtonReceiver(
		ComponentName mediaButtonReceiver) {
		mHandler.post(new Runnable() {
		@Override
		public void run() {
		mCallback.onAddressedPlayerChanged(mediaButtonReceiver);
		}
		});
		}
		}
		}

services/core/java/com/android/server/media/MediaSessionService.java

+131 −20

Original line number	Diff line number	Diff line
		@@ -36,6 +36,7 @@ import android.media.AudioSystem;
		import android.media.IAudioService;
		import android.media.IRemoteVolumeController;
		import android.media.session.IActiveSessionsListener;
		import android.media.session.ICallback;
		import android.media.session.ISession;
		import android.media.session.ISessionCallback;
		import android.media.session.ISessionManager;
		@@ -101,6 +102,7 @@ public class MediaSessionService extends SystemService implements Monitor {
		private AudioManagerInternal mAudioManagerInternal;
		private ContentResolver mContentResolver;
		private SettingsObserver mSettingsObserver;
		private ICallback mCallback;

		// List of user IDs running in the foreground.
		// Multiple users can be in the foreground if the work profile is on.
		@@ -485,6 +487,7 @@ public class MediaSessionService extends SystemService implements Monitor {
		if (size > 0 && records.get(0).isPlaybackActive(false)) {
		rememberMediaButtonReceiverLocked(records.get(0));
		}
		pushAddressedPlayerChangedLocked();
		ArrayList<MediaSession.Token> tokens = new ArrayList<MediaSession.Token>();
		for (int i = 0; i < size; i++) {
		tokens.add(new MediaSession.Token(records.get(i).getControllerBinder()));
		@@ -516,6 +519,52 @@ public class MediaSessionService extends SystemService implements Monitor {
		}
		}

		private MediaSessionRecord getMediaButtonSessionLocked() {
		// If we don't have a media button receiver to fall back on
		// include non-playing sessions for dispatching.
		boolean useNotPlayingSessions = true;
		for (int userId : mCurrentUserIdList) {
		UserRecord ur = mUserRecords.get(userId);
		if (ur.mLastMediaButtonReceiver != null
		\|\| ur.mRestoredMediaButtonReceiver != null) {
		useNotPlayingSessions = false;
		break;
		}
		}
		return mPriorityStack.getDefaultMediaButtonSession(
		mCurrentUserIdList, useNotPlayingSessions);
		}

		private void pushAddressedPlayerChangedLocked() {
		if (mCallback == null) {
		return;
		}
		try {
		MediaSessionRecord mediaButtonSession = getMediaButtonSessionLocked();
		if (mediaButtonSession != null) {
		mCallback.onAddressedPlayerChangedToMediaSession(
		new MediaSession.Token(mediaButtonSession.getControllerBinder()));
		} else {
		for (int userId : mCurrentUserIdList) {
		UserRecord user = mUserRecords.get(userId);
		if (user.mLastMediaButtonReceiver == null
		&& user.mRestoredMediaButtonReceiver == null) {
		continue;
		}
		ComponentName componentName = user.mLastMediaButtonReceiver != null
		? user.mLastMediaButtonReceiver.getIntent().getComponent()
		: user.mRestoredMediaButtonReceiver;
		mCallback.onAddressedPlayerChangedToMediaButtonReceiver(componentName);
		return;
		}
		}
		} catch (RemoteException e) {
		Log.w(TAG, "Failed to pushAddressedPlayerChangedLocked", e);
		}
		}

		// Remember media button receiver and keep it in the persistent storage.
		// This should be called whenever there's no media session to receive media button event.
		private void rememberMediaButtonReceiverLocked(MediaSessionRecord record) {
		PendingIntent receiver = record.getMediaButtonReceiver();
		UserRecord user = mUserRecords.get(record.getUserId());
		@@ -530,6 +579,14 @@ public class MediaSessionService extends SystemService implements Monitor {
		}
		}

		private String getCallingPackageName(int uid) {
		String[] packages = getContext().getPackageManager().getPackagesForUid(uid);
		if (packages != null && packages.length > 0) {
		return packages[0];
		}
		return "";
		}

		/**
		* Information about a particular user. The contents of this object is
		* guarded by mLock.
		@@ -792,12 +849,48 @@ public class MediaSessionService extends SystemService implements Monitor {
		Log.d(TAG, "dispatchMediaKeyEvent, useNotPlayingSessions="
		+ useNotPlayingSessions);
		}
		MediaSessionRecord session = mPriorityStack.getDefaultMediaButtonSession(
		mCurrentUserIdList, useNotPlayingSessions);
		if (isVoiceKey(keyEvent.getKeyCode())) {
		handleVoiceKeyEventLocked(keyEvent, needWakeLock, session);
		handleVoiceKeyEventLocked(keyEvent, needWakeLock);
		} else {
		dispatchMediaKeyEventLocked(keyEvent, needWakeLock, session);
		dispatchMediaKeyEventLocked(keyEvent, needWakeLock);
		}
		}
		} finally {
		Binder.restoreCallingIdentity(token);
		}
		}

		@Override
		public void setCallback(ICallback callback) {
		final int pid = Binder.getCallingPid();
		final int uid = Binder.getCallingUid();
		final long token = Binder.clearCallingIdentity();
		try {
		if (uid != Process.BLUETOOTH_UID) {
		throw new SecurityException("Only Bluetooth service processes can set"
		+ " Callback");
		}
		synchronized (mLock) {
		Log.d(TAG, "Callback + " + mCallback
		+ " is set by " + getCallingPackageName(uid));
		mCallback = callback;
		if (mCallback == null) {
		return;
		}
		try {
		mCallback.asBinder().linkToDeath(
		new IBinder.DeathRecipient() {
		@Override
		public void binderDied() {
		synchronized (mLock) {
		mCallback = null;
		}
		}
		}, 0);
		pushAddressedPlayerChangedLocked();
		} catch (RemoteException e) {
		Log.w(TAG, "Failed to set callback", e);
		mCallback = null;
		}
		}
		} finally {
		@@ -805,6 +898,7 @@ public class MediaSessionService extends SystemService implements Monitor {
		}
		}


		@Override
		public void dispatchAdjustVolume(int suggestedStream, int delta, int flags) {
		final long token = Binder.clearCallingIdentity();
		@@ -932,13 +1026,7 @@ public class MediaSessionService extends SystemService implements Monitor {
		}
		}

		private void handleVoiceKeyEventLocked(KeyEvent keyEvent, boolean needWakeLock,
		MediaSessionRecord session) {
		if (session != null && session.hasFlag(MediaSession.FLAG_EXCLUSIVE_GLOBAL_PRIORITY)) {
		// If the phone app has priority just give it the event
		dispatchMediaKeyEventLocked(keyEvent, needWakeLock, session);
		return;
		}
		private void handleVoiceKeyEventLocked(KeyEvent keyEvent, boolean needWakeLock) {
		int action = keyEvent.getAction();
		boolean isLongPress = (keyEvent.getFlags() & KeyEvent.FLAG_LONG_PRESS) != 0;
		if (action == KeyEvent.ACTION_DOWN) {
		@@ -955,15 +1043,15 @@ public class MediaSessionService extends SystemService implements Monitor {
		if (!mVoiceButtonHandled && !keyEvent.isCanceled()) {
		// Resend the down then send this event through
		KeyEvent downEvent = KeyEvent.changeAction(keyEvent, KeyEvent.ACTION_DOWN);
		dispatchMediaKeyEventLocked(downEvent, needWakeLock, session);
		dispatchMediaKeyEventLocked(keyEvent, needWakeLock, session);
		dispatchMediaKeyEventLocked(downEvent, needWakeLock);
		dispatchMediaKeyEventLocked(keyEvent, needWakeLock);
		}
		}
		}
		}

		private void dispatchMediaKeyEventLocked(KeyEvent keyEvent, boolean needWakeLock,
		MediaSessionRecord session) {
		private void dispatchMediaKeyEventLocked(KeyEvent keyEvent, boolean needWakeLock) {
		MediaSessionRecord session = getMediaButtonSessionLocked();
		if (session != null) {
		if (DEBUG_MEDIA_KEY_EVENT) {
		Log.d(TAG, "Sending " + keyEvent + " to " + session);
		@@ -977,6 +1065,14 @@ public class MediaSessionService extends SystemService implements Monitor {
		needWakeLock ? mKeyEventReceiver.mLastTimeoutId : -1,
		mKeyEventReceiver, Process.SYSTEM_UID,
		getContext().getPackageName());
		if (mCallback != null) {
		try {
		mCallback.onMediaKeyEventDispatchedToMediaSession(keyEvent,
		new MediaSession.Token(session.getControllerBinder()));
		} catch (RemoteException e) {
		Log.w(TAG, "Failed to send callback", e);
		}
		}
		} else {
		// Launch the last PendingIntent we had with priority
		for (int userId : mCurrentUserIdList) {
		@@ -993,26 +1089,41 @@ public class MediaSessionService extends SystemService implements Monitor {
		mediaButtonIntent.putExtra(Intent.EXTRA_KEY_EVENT, keyEvent);
		try {
		if (user.mLastMediaButtonReceiver != null) {
		PendingIntent receiver = user.mLastMediaButtonReceiver;
		if (DEBUG_MEDIA_KEY_EVENT) {
		Log.d(TAG, "Sending " + keyEvent
		+ " to the last known pendingIntent "
		+ user.mLastMediaButtonReceiver);
		+ " to the last known pendingIntent " + receiver);
		}
		user.mLastMediaButtonReceiver.send(getContext(),
		receiver.send(getContext(),
		needWakeLock ? mKeyEventReceiver.mLastTimeoutId : -1,
		mediaButtonIntent, mKeyEventReceiver, mHandler);
		if (mCallback != null) {
		ComponentName componentName =
		user.mLastMediaButtonReceiver.getIntent().getComponent();
		if (componentName != null) {
		mCallback.onMediaKeyEventDispatchedToMediaButtonReceiver(
		keyEvent, componentName);
		}
		}
		} else {
		ComponentName receiver = user.mRestoredMediaButtonReceiver;
		if (DEBUG_MEDIA_KEY_EVENT) {
		Log.d(TAG, "Sending " + keyEvent + " to the restored intent "
		+ user.mRestoredMediaButtonReceiver);
		+ receiver);
		}
		mediaButtonIntent.setComponent(user.mRestoredMediaButtonReceiver);
		mediaButtonIntent.setComponent(receiver);
		getContext().sendBroadcastAsUser(mediaButtonIntent,
		UserHandle.of(userId));
		if (mCallback != null) {
		mCallback.onMediaKeyEventDispatchedToMediaButtonReceiver(
		keyEvent, receiver);
		}
		}
		} catch (CanceledException e) {
		Log.i(TAG, "Error sending key event to media button receiver "
		+ user.mLastMediaButtonReceiver, e);
		} catch (RemoteException e) {
		Log.w(TAG, "Failed to send callback", e);
		}
		return;
		}