diff --git a/Android.mk b/Android.mk
index 45f370105dcb3..f544620b993f2 100644
--- a/Android.mk
+++ b/Android.mk
@@ -441,6 +441,7 @@ 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/IOnMediaKeyListener.aidl \
media/java/android/media/session/IOnVolumeKeyLongPressListener.aidl \
media/java/android/media/session/ISession.aidl \
diff --git a/media/java/android/media/session/ICallback.aidl b/media/java/android/media/session/ICallback.aidl
new file mode 100644
index 0000000000000..322bffa96c9e1
--- /dev/null
+++ b/media/java/android/media/session/ICallback.aidl
@@ -0,0 +1,35 @@
+/* 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);
+}
+
diff --git a/media/java/android/media/session/ISessionManager.aidl b/media/java/android/media/session/ISessionManager.aidl
index 8a987733ee644..5fcb4304a42a2 100644
--- a/media/java/android/media/session/ISessionManager.aidl
+++ b/media/java/android/media/session/ISessionManager.aidl
@@ -18,8 +18,9 @@ package android.media.session;
import android.content.ComponentName;
import android.media.IRemoteVolumeController;
import android.media.session.IActiveSessionsListener;
-import android.media.session.IOnVolumeKeyLongPressListener;
+import android.media.session.ICallback;
import android.media.session.IOnMediaKeyListener;
+import android.media.session.IOnVolumeKeyLongPressListener;
import android.media.session.ISession;
import android.media.session.ISessionCallback;
import android.os.Bundle;
@@ -45,7 +46,7 @@ interface ISessionManager {
// For PhoneWindowManager to precheck media keys
boolean isGlobalPriorityActive();
+ void setCallback(in ICallback callback);
void setOnVolumeKeyLongPressListener(in IOnVolumeKeyLongPressListener listener);
void setOnMediaKeyListener(in IOnMediaKeyListener listener);
}
-
diff --git a/media/java/android/media/session/MediaSessionManager.java b/media/java/android/media/session/MediaSessionManager.java
index 1bfe6c5129e09..83793aeb2466c 100644
--- a/media/java/android/media/session/MediaSessionManager.java
+++ b/media/java/android/media/session/MediaSessionManager.java
@@ -71,6 +71,7 @@ public final class MediaSessionManager {
private Context mContext;
+ private CallbackImpl mCallback;
private OnVolumeKeyLongPressListenerImpl mOnVolumeKeyLongPressListener;
private OnMediaKeyListenerImpl mOnMediaKeyListener;
@@ -410,6 +411,36 @@ public final class MediaSessionManager {
}
}
+ /**
+ * Set a {@link Callback}.
+ *
+ * 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}.
@@ -448,6 +479,56 @@ public final class MediaSessionManager {
boolean onMediaKey(KeyEvent event);
}
+ /**
+ * Callbacks for the media session service.
+ *
+ *
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.
+ *
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.
+ *
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.
+ *
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;
@@ -546,4 +627,57 @@ public final class MediaSessionManager {
});
}
}
+
+ 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);
+ }
+ });
+ }
+ }
}
diff --git a/services/core/java/com/android/server/media/MediaSessionService.java b/services/core/java/com/android/server/media/MediaSessionService.java
index 9ab685d508c4a..6349f212d084d 100644
--- a/services/core/java/com/android/server/media/MediaSessionService.java
+++ b/services/core/java/com/android/server/media/MediaSessionService.java
@@ -37,6 +37,7 @@ 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.IOnMediaKeyListener;
import android.media.session.IOnVolumeKeyLongPressListener;
import android.media.session.ISession;
@@ -107,6 +108,7 @@ 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.
@@ -486,6 +488,7 @@ public class MediaSessionService extends SystemService implements Monitor {
if (size > 0 && records.get(0).isPlaybackActive(false)) {
rememberMediaButtonReceiverLocked(records.get(0));
}
+ pushAddressedPlayerChangedLocked();
ArrayList tokens = new ArrayList();
for (int i = 0; i < size; i++) {
tokens.add(new MediaSession.Token(records.get(i).getControllerBinder()));
@@ -517,6 +520,52 @@ 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());
@@ -838,6 +887,44 @@ public class MediaSessionService extends SystemService implements Monitor {
}
}
+ @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 {
+ Binder.restoreCallingIdentity(token);
+ }
+ }
+
@Override
public void setOnVolumeKeyLongPressListener(IOnVolumeKeyLongPressListener listener) {
final int pid = Binder.getCallingPid();
@@ -1217,24 +1304,7 @@ public class MediaSessionService extends SystemService implements Monitor {
}
private void dispatchMediaKeyEventLocked(KeyEvent keyEvent, boolean needWakeLock) {
- // 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;
- }
- }
- if (DEBUG) {
- Log.d(TAG, "dispatchMediaKeyEvent, useNotPlayingSessions="
- + useNotPlayingSessions);
- }
-
- MediaSessionRecord session = mPriorityStack.getDefaultMediaButtonSession(
- mCurrentUserIdList, useNotPlayingSessions);
+ MediaSessionRecord session = getMediaButtonSessionLocked();
if (session != null) {
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Sending " + keyEvent + " to " + session);
@@ -1247,6 +1317,14 @@ 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) {
@@ -1263,26 +1341,41 @@ 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_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_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;
}