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/*
* Copyright (C) 2014 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 com.android.server.media;
import static android.os.UserHandle.USER_ALL;
import android.annotation.Nullable;
import android.app.ActivityManager;
import android.app.INotificationManager;
import android.app.KeyguardManager;
import android.app.PendingIntent;
import android.app.PendingIntent.CanceledException;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ParceledListSlice;
import android.content.pm.ServiceInfo;
import android.content.pm.UserInfo;
import android.database.ContentObserver;
import android.media.AudioManager;
import android.media.AudioManagerInternal;
import android.media.AudioPlaybackConfiguration;
import android.media.AudioSystem;
import android.media.IAudioService;
import android.media.IRemoteVolumeController;
import android.media.MediaController2;
import android.media.Session2CommandGroup;
import android.media.Session2Token;
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;
import android.media.session.ISession2TokensListener;
import android.media.session.ISessionCallback;
import android.media.session.ISessionManager;
import android.media.session.MediaController;
import android.media.session.MediaSession;
import android.media.session.MediaSessionManager;
import android.net.Uri;
import android.os.Binder;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerExecutor;
import android.os.IBinder;
import android.os.Message;
import android.os.PowerManager;
import android.os.Process;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.ResultReceiver;
import android.os.ServiceManager;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.Settings;
import android.speech.RecognizerIntent;
import android.text.TextUtils;
import android.util.Log;
import android.util.Slog;
import android.util.SparseArray;
import android.util.SparseIntArray;
import android.view.KeyEvent;
import android.view.ViewConfiguration;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.util.DumpUtils;
import com.android.server.LocalServices;
import com.android.server.SystemService;
import com.android.server.Watchdog;
import com.android.server.Watchdog.Monitor;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
/**
* System implementation of MediaSessionManager
*/
public class MediaSessionService extends SystemService implements Monitor {
private static final String TAG = "MediaSessionService";
static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
// Leave log for key event always.
private static final boolean DEBUG_KEY_EVENT = true;
private static final int WAKELOCK_TIMEOUT = 5000;
private static final int MEDIA_KEY_LISTENER_TIMEOUT = 1000;
private final Context mContext;
private final SessionManagerImpl mSessionManagerImpl;
private final MessageHandler mHandler = new MessageHandler();
private final PowerManager.WakeLock mMediaEventWakeLock;
private final int mLongPressTimeout;
private final INotificationManager mNotificationManager;
private final Object mLock = new Object();
// Keeps the full user id for each user.
@GuardedBy("mLock")
private final SparseIntArray mFullUserIds = new SparseIntArray();
@GuardedBy("mLock")
private final SparseArray mUserRecords = new SparseArray();
@GuardedBy("mLock")
private final ArrayList mSessionsListeners =
new ArrayList();
// Map user id as index to list of Session2Tokens
// TODO: Keep session2 info in MediaSessionStack for prioritizing both session1 and session2 in
// one place.
@GuardedBy("mLock")
private final SparseArray> mSession2TokensPerUser = new SparseArray<>();
@GuardedBy("mLock")
private final List mSession2TokensListenerRecords =
new ArrayList<>();
private KeyguardManager mKeyguardManager;
private IAudioService mAudioService;
private AudioManagerInternal mAudioManagerInternal;
private ActivityManager mActivityManager;
private ContentResolver mContentResolver;
private SettingsObserver mSettingsObserver;
private boolean mHasFeatureLeanback;
// The FullUserRecord of the current users. (i.e. The foreground user that isn't a profile)
// It's always not null after the MediaSessionService is started.
private FullUserRecord mCurrentFullUserRecord;
private MediaSessionRecord mGlobalPrioritySession;
private AudioPlayerStateMonitor mAudioPlayerStateMonitor;
// Used to notify System UI and Settings when remote volume was changed.
@GuardedBy("mLock")
final RemoteCallbackList mRemoteVolumeControllers =
new RemoteCallbackList<>();
public MediaSessionService(Context context) {
super(context);
mContext = context;
mSessionManagerImpl = new SessionManagerImpl();
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
mMediaEventWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "handleMediaEvent");
mLongPressTimeout = ViewConfiguration.getLongPressTimeout();
mNotificationManager = INotificationManager.Stub.asInterface(
ServiceManager.getService(Context.NOTIFICATION_SERVICE));
}
@Override
public void onStart() {
publishBinderService(Context.MEDIA_SESSION_SERVICE, mSessionManagerImpl);
Watchdog.getInstance().addMonitor(this);
mKeyguardManager = (KeyguardManager) mContext.getSystemService(Context.KEYGUARD_SERVICE);
mAudioService = getAudioService();
mAudioManagerInternal = LocalServices.getService(AudioManagerInternal.class);
mActivityManager =
(ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);
mAudioPlayerStateMonitor = AudioPlayerStateMonitor.getInstance(mContext);
mAudioPlayerStateMonitor.registerListener(
(config, isRemoved) -> {
if (config.getPlayerType()
== AudioPlaybackConfiguration.PLAYER_TYPE_JAM_SOUNDPOOL) {
return;
}
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(
UserHandle.getUserId(config.getClientUid()));
if (user != null) {
user.mPriorityStack.updateMediaButtonSessionIfNeeded();
}
}
}, null /* handler */);
mContentResolver = mContext.getContentResolver();
mSettingsObserver = new SettingsObserver();
mSettingsObserver.observe();
mHasFeatureLeanback = mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_LEANBACK);
updateUser();
}
private IAudioService getAudioService() {
IBinder b = ServiceManager.getService(Context.AUDIO_SERVICE);
return IAudioService.Stub.asInterface(b);
}
private boolean isGlobalPriorityActiveLocked() {
return mGlobalPrioritySession != null && mGlobalPrioritySession.isActive();
}
void updateSession(MediaSessionRecord record) {
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(record.getUserId());
if (user == null) {
Log.w(TAG, "Unknown session updated. Ignoring.");
return;
}
if ((record.getFlags() & MediaSession.FLAG_EXCLUSIVE_GLOBAL_PRIORITY) != 0) {
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Global priority session is updated, active=" + record.isActive());
}
user.pushAddressedPlayerChangedLocked();
} else {
if (!user.mPriorityStack.contains(record)) {
Log.w(TAG, "Unknown session updated. Ignoring.");
return;
}
user.mPriorityStack.onSessionStateChange(record);
}
mHandler.postSessionsChanged(record.getUserId());
}
}
void setGlobalPrioritySession(MediaSessionRecord record) {
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(record.getUserId());
if (mGlobalPrioritySession != record) {
Log.d(TAG, "Global priority session is changed from " + mGlobalPrioritySession
+ " to " + record);
mGlobalPrioritySession = record;
if (user != null && user.mPriorityStack.contains(record)) {
// Handle the global priority session separately.
// Otherwise, it can be the media button session regardless of the active state
// because it or other system components might have been the lastly played media
// app.
user.mPriorityStack.removeSession(record);
}
}
}
}
private List getActiveSessionsLocked(int userId) {
List records = new ArrayList<>();
if (userId == USER_ALL) {
int size = mUserRecords.size();
for (int i = 0; i < size; i++) {
records.addAll(mUserRecords.valueAt(i).mPriorityStack.getActiveSessions(userId));
}
} else {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null) {
Log.w(TAG, "getSessions failed. Unknown user " + userId);
return records;
}
records.addAll(user.mPriorityStack.getActiveSessions(userId));
}
// Return global priority session at the first whenever it's asked.
if (isGlobalPriorityActiveLocked()
&& (userId == USER_ALL || userId == mGlobalPrioritySession.getUserId())) {
records.add(0, mGlobalPrioritySession);
}
return records;
}
List getSession2TokensLocked(int userId) {
List list = new ArrayList<>();
if (userId == USER_ALL) {
for (int i = 0; i < mSession2TokensPerUser.size(); i++) {
list.addAll(mSession2TokensPerUser.valueAt(i));
}
} else {
list.addAll(mSession2TokensPerUser.get(userId));
}
return list;
}
/**
* Tells the System UI and Settings app that volume has changed on an active remote session.
*/
public void notifyRemoteVolumeChanged(int flags, MediaSessionRecord session) {
if (!session.isActive()) {
return;
}
synchronized (mLock) {
int size = mRemoteVolumeControllers.beginBroadcast();
MediaSession.Token token = session.getSessionToken();
for (int i = size - 1; i >= 0; i--) {
try {
IRemoteVolumeController cb = mRemoteVolumeControllers.getBroadcastItem(i);
cb.remoteVolumeChanged(token, flags);
} catch (Exception e) {
Log.w(TAG, "Error sending volume change.", e);
}
}
mRemoteVolumeControllers.finishBroadcast();
}
}
void onSessionPlaystateChanged(MediaSessionRecord record, int oldState, int newState) {
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(record.getUserId());
if (user == null || !user.mPriorityStack.contains(record)) {
Log.d(TAG, "Unknown session changed playback state. Ignoring.");
return;
}
user.mPriorityStack.onPlaystateChanged(record, oldState, newState);
}
}
void onSessionPlaybackTypeChanged(MediaSessionRecord record) {
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(record.getUserId());
if (user == null || !user.mPriorityStack.contains(record)) {
Log.d(TAG, "Unknown session changed playback type. Ignoring.");
return;
}
pushRemoteVolumeUpdateLocked(record.getUserId());
}
}
@Override
public void onStartUser(int userId) {
if (DEBUG) Log.d(TAG, "onStartUser: " + userId);
updateUser();
}
@Override
public void onSwitchUser(int userId) {
if (DEBUG) Log.d(TAG, "onSwitchUser: " + userId);
updateUser();
}
// Called when the user with the userId is removed.
@Override
public void onStopUser(int userId) {
if (DEBUG) Log.d(TAG, "onStopUser: " + userId);
synchronized (mLock) {
// TODO: Also handle removing user in updateUser() because adding/switching user is
// handled in updateUser().
FullUserRecord user = getFullUserRecordLocked(userId);
if (user != null) {
if (user.mFullUserId == userId) {
user.destroySessionsForUserLocked(USER_ALL);
mUserRecords.remove(userId);
} else {
user.destroySessionsForUserLocked(userId);
}
}
mSession2TokensPerUser.remove(userId);
updateUser();
}
}
@Override
public void monitor() {
synchronized (mLock) {
// Check for deadlock
}
}
protected void enforcePhoneStatePermission(int pid, int uid) {
if (mContext.checkPermission(android.Manifest.permission.MODIFY_PHONE_STATE, pid, uid)
!= PackageManager.PERMISSION_GRANTED) {
throw new SecurityException("Must hold the MODIFY_PHONE_STATE permission.");
}
}
void sessionDied(MediaSessionRecord session) {
synchronized (mLock) {
destroySessionLocked(session);
}
}
void destroySession(MediaSessionRecord session) {
synchronized (mLock) {
destroySessionLocked(session);
}
}
private void updateUser() {
synchronized (mLock) {
UserManager manager = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
mFullUserIds.clear();
List allUsers = manager.getUsers();
if (allUsers != null) {
for (UserInfo userInfo : allUsers) {
if (userInfo.isManagedProfile()) {
mFullUserIds.put(userInfo.id, userInfo.profileGroupId);
} else {
mFullUserIds.put(userInfo.id, userInfo.id);
if (mUserRecords.get(userInfo.id) == null) {
mUserRecords.put(userInfo.id, new FullUserRecord(userInfo.id));
}
}
if (mSession2TokensPerUser.get(userInfo.id) == null) {
mSession2TokensPerUser.put(userInfo.id, new ArrayList<>());
}
}
}
// Ensure that the current full user exists.
int currentFullUserId = ActivityManager.getCurrentUser();
mCurrentFullUserRecord = mUserRecords.get(currentFullUserId);
if (mCurrentFullUserRecord == null) {
Log.w(TAG, "Cannot find FullUserInfo for the current user " + currentFullUserId);
mCurrentFullUserRecord = new FullUserRecord(currentFullUserId);
mUserRecords.put(currentFullUserId, mCurrentFullUserRecord);
if (mSession2TokensPerUser.get(currentFullUserId) == null) {
mSession2TokensPerUser.put(currentFullUserId, new ArrayList<>());
}
}
mFullUserIds.put(currentFullUserId, currentFullUserId);
}
}
private void updateActiveSessionListeners() {
synchronized (mLock) {
for (int i = mSessionsListeners.size() - 1; i >= 0; i--) {
SessionsListenerRecord listener = mSessionsListeners.get(i);
try {
enforceMediaPermissions(listener.componentName, listener.pid, listener.uid,
listener.userId);
} catch (SecurityException e) {
Log.i(TAG, "ActiveSessionsListener " + listener.componentName
+ " is no longer authorized. Disconnecting.");
mSessionsListeners.remove(i);
try {
listener.listener
.onActiveSessionsChanged(new ArrayList());
} catch (Exception e1) {
// ignore
}
}
}
}
}
/*
* When a session is removed several things need to happen.
* 1. We need to remove it from the relevant user.
* 2. We need to remove it from the priority stack.
* 3. We need to remove it from all sessions.
* 4. If this is the system priority session we need to clear it.
* 5. We need to unlink to death from the cb binder
* 6. We need to tell the session to do any final cleanup (onDestroy)
*/
private void destroySessionLocked(MediaSessionRecord session) {
if (DEBUG) {
Log.d(TAG, "Destroying " + session);
}
FullUserRecord user = getFullUserRecordLocked(session.getUserId());
if (mGlobalPrioritySession == session) {
mGlobalPrioritySession = null;
if (session.isActive() && user != null) {
user.pushAddressedPlayerChangedLocked();
}
} else {
if (user != null) {
user.mPriorityStack.removeSession(session);
}
}
try {
session.getCallback().asBinder().unlinkToDeath(session, 0);
} catch (Exception e) {
// ignore exceptions while destroying a session.
}
session.onDestroy();
mHandler.postSessionsChanged(session.getUserId());
}
private void enforcePackageName(String packageName, int uid) {
if (TextUtils.isEmpty(packageName)) {
throw new IllegalArgumentException("packageName may not be empty");
}
String[] packages = mContext.getPackageManager().getPackagesForUid(uid);
final int packageCount = packages.length;
for (int i = 0; i < packageCount; i++) {
if (packageName.equals(packages[i])) {
return;
}
}
throw new IllegalArgumentException("packageName is not owned by the calling process");
}
/**
* Checks a caller's authorization to register an IRemoteControlDisplay.
* Authorization is granted if one of the following is true:
*
* - the caller has android.Manifest.permission.MEDIA_CONTENT_CONTROL
* permission
* - the caller's listener is one of the enabled notification listeners
* for the caller's user
*
*/
private void enforceMediaPermissions(ComponentName compName, int pid, int uid,
int resolvedUserId) {
if (hasStatusBarServicePermission(pid, uid)) return;
if (mContext
.checkPermission(android.Manifest.permission.MEDIA_CONTENT_CONTROL, pid, uid)
!= PackageManager.PERMISSION_GRANTED
&& !isEnabledNotificationListener(compName, UserHandle.getUserId(uid),
resolvedUserId)) {
throw new SecurityException("Missing permission to control media.");
}
}
private boolean hasStatusBarServicePermission(int pid, int uid) {
return mContext.checkPermission(android.Manifest.permission.STATUS_BAR_SERVICE,
pid, uid) == PackageManager.PERMISSION_GRANTED;
}
private void enforceStatusBarServicePermission(String action, int pid, int uid) {
if (!hasStatusBarServicePermission(pid, uid)) {
throw new SecurityException("Only System UI and Settings may " + action);
}
}
/**
* This checks if the component is an enabled notification listener for the
* specified user. Enabled components may only operate on behalf of the user
* they're running as.
*
* @param compName The component that is enabled.
* @param userId The user id of the caller.
* @param forUserId The user id they're making the request on behalf of.
* @return True if the component is enabled, false otherwise
*/
private boolean isEnabledNotificationListener(ComponentName compName, int userId,
int forUserId) {
if (userId != forUserId) {
// You may not access another user's content as an enabled listener.
return false;
}
if (DEBUG) {
Log.d(TAG, "Checking if enabled notification listener " + compName);
}
if (compName != null) {
try {
return mNotificationManager.isNotificationListenerAccessGrantedForUser(
compName, userId);
} catch (RemoteException e) {
Log.w(TAG, "Dead NotificationManager in isEnabledNotificationListener", e);
}
}
return false;
}
private MediaSessionRecord createSessionInternal(int callerPid, int callerUid, int userId,
String callerPackageName, ISessionCallback cb, String tag, Bundle sessionInfo)
throws RemoteException {
synchronized (mLock) {
return createSessionLocked(callerPid, callerUid, userId, callerPackageName, cb,
tag, sessionInfo);
}
}
/*
* When a session is created the following things need to happen.
* 1. Its callback binder needs a link to death
* 2. It needs to be added to all sessions.
* 3. It needs to be added to the priority stack.
* 4. It needs to be added to the relevant user record.
*/
private MediaSessionRecord createSessionLocked(int callerPid, int callerUid, int userId,
String callerPackageName, ISessionCallback cb, String tag, Bundle sessionInfo) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null) {
Log.w(TAG, "Request from invalid user: " + userId + ", pkg=" + callerPackageName);
throw new RuntimeException("Session request from invalid user.");
}
final MediaSessionRecord session = new MediaSessionRecord(callerPid, callerUid, userId,
callerPackageName, cb, tag, sessionInfo, this, mHandler.getLooper());
try {
cb.asBinder().linkToDeath(session, 0);
} catch (RemoteException e) {
throw new RuntimeException("Media Session owner died prematurely.", e);
}
user.mPriorityStack.addSession(session);
mHandler.postSessionsChanged(userId);
if (DEBUG) {
Log.d(TAG, "Created session for " + callerPackageName + " with tag " + tag);
}
return session;
}
private int findIndexOfSessionsListenerLocked(IActiveSessionsListener listener) {
for (int i = mSessionsListeners.size() - 1; i >= 0; i--) {
if (mSessionsListeners.get(i).listener.asBinder() == listener.asBinder()) {
return i;
}
}
return -1;
}
private int findIndexOfSession2TokensListenerLocked(ISession2TokensListener listener) {
for (int i = mSession2TokensListenerRecords.size() - 1; i >= 0; i--) {
if (mSession2TokensListenerRecords.get(i).listener.asBinder() == listener.asBinder()) {
return i;
}
}
return -1;
}
private void pushSessionsChanged(int userId) {
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null) {
Log.w(TAG, "pushSessionsChanged failed. No user with id=" + userId);
return;
}
List records = getActiveSessionsLocked(userId);
int size = records.size();
ArrayList tokens = new ArrayList();
for (int i = 0; i < size; i++) {
tokens.add(records.get(i).getSessionToken());
}
pushRemoteVolumeUpdateLocked(userId);
for (int i = mSessionsListeners.size() - 1; i >= 0; i--) {
SessionsListenerRecord record = mSessionsListeners.get(i);
if (record.userId == USER_ALL || record.userId == userId) {
try {
record.listener.onActiveSessionsChanged(tokens);
} catch (RemoteException e) {
Log.w(TAG, "Dead ActiveSessionsListener in pushSessionsChanged, removing",
e);
mSessionsListeners.remove(i);
}
}
}
}
}
private void pushRemoteVolumeUpdateLocked(int userId) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null) {
Log.w(TAG, "pushRemoteVolumeUpdateLocked failed. No user with id=" + userId);
return;
}
synchronized (mLock) {
int size = mRemoteVolumeControllers.beginBroadcast();
MediaSessionRecord record = user.mPriorityStack.getDefaultRemoteSession(userId);
MediaSession.Token token = record == null ? null : record.getSessionToken();
for (int i = size - 1; i >= 0; i--) {
try {
IRemoteVolumeController cb = mRemoteVolumeControllers.getBroadcastItem(i);
cb.updateRemoteController(token);
} catch (Exception e) {
Log.w(TAG, "Error sending default remote volume.", e);
}
}
mRemoteVolumeControllers.finishBroadcast();
}
}
void pushSession2TokensChangedLocked(int userId) {
List allSession2Tokens = getSession2TokensLocked(USER_ALL);
List session2Tokens = getSession2TokensLocked(userId);
for (int i = mSession2TokensListenerRecords.size() - 1; i >= 0; i--) {
Session2TokensListenerRecord listenerRecord = mSession2TokensListenerRecords.get(i);
try {
if (listenerRecord.userId == USER_ALL) {
listenerRecord.listener.onSession2TokensChanged(allSession2Tokens);
} else if (listenerRecord.userId == userId) {
listenerRecord.listener.onSession2TokensChanged(session2Tokens);
}
} catch (RemoteException e) {
Log.w(TAG, "Failed to notify Session2Token change. Removing listener.", e);
mSession2TokensListenerRecords.remove(i);
}
}
}
/**
* Called when the media button receiver for the {@code record} is changed.
*
* @param record the media session whose media button receiver is updated.
*/
public void onMediaButtonReceiverChanged(MediaSessionRecord record) {
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(record.getUserId());
MediaSessionRecord mediaButtonSession =
user.mPriorityStack.getMediaButtonSession();
if (record == mediaButtonSession) {
user.rememberMediaButtonReceiverLocked(mediaButtonSession);
}
}
}
private String getCallingPackageName(int uid) {
String[] packages = mContext.getPackageManager().getPackagesForUid(uid);
if (packages != null && packages.length > 0) {
return packages[0];
}
return "";
}
private void dispatchVolumeKeyLongPressLocked(KeyEvent keyEvent) {
if (mCurrentFullUserRecord.mOnVolumeKeyLongPressListener == null) {
return;
}
try {
mCurrentFullUserRecord.mOnVolumeKeyLongPressListener.onVolumeKeyLongPress(keyEvent);
} catch (RemoteException e) {
Log.w(TAG, "Failed to send " + keyEvent + " to volume key long-press listener");
}
}
private FullUserRecord getFullUserRecordLocked(int userId) {
int fullUserId = mFullUserIds.get(userId, -1);
if (fullUserId < 0) {
return null;
}
return mUserRecords.get(fullUserId);
}
private MediaSessionRecord getMediaSessionRecordLocked(MediaSession.Token sessionToken) {
FullUserRecord user = getFullUserRecordLocked(UserHandle.getUserId(sessionToken.getUid()));
if (user != null) {
return user.mPriorityStack.getMediaSessionRecord(sessionToken);
}
return null;
}
/**
* Information about a full user and its corresponding managed profiles.
*
* Since the full user runs together with its managed profiles, a user wouldn't differentiate
* them when he/she presses a media/volume button. So keeping media sessions for them in one
* place makes more sense and increases the readability.
* The contents of this object is guarded by {@link #mLock}.
*/
final class FullUserRecord implements MediaSessionStack.OnMediaButtonSessionChangedListener {
public static final int COMPONENT_TYPE_INVALID = 0;
public static final int COMPONENT_TYPE_BROADCAST = 1;
public static final int COMPONENT_TYPE_ACTIVITY = 2;
public static final int COMPONENT_TYPE_SERVICE = 3;
private static final String COMPONENT_NAME_USER_ID_DELIM = ",";
private final int mFullUserId;
private final MediaSessionStack mPriorityStack;
private PendingIntent mLastMediaButtonReceiver;
private ComponentName mRestoredMediaButtonReceiver;
private int mRestoredMediaButtonReceiverComponentType;
private int mRestoredMediaButtonReceiverUserId;
private IOnVolumeKeyLongPressListener mOnVolumeKeyLongPressListener;
private int mOnVolumeKeyLongPressListenerUid;
private KeyEvent mInitialDownVolumeKeyEvent;
private int mInitialDownVolumeStream;
private boolean mInitialDownMusicOnly;
private IOnMediaKeyListener mOnMediaKeyListener;
private int mOnMediaKeyListenerUid;
private ICallback mCallback;
FullUserRecord(int fullUserId) {
mFullUserId = fullUserId;
mPriorityStack = new MediaSessionStack(mAudioPlayerStateMonitor, this);
// Restore the remembered media button receiver before the boot.
String mediaButtonReceiverInfo = Settings.Secure.getStringForUser(mContentResolver,
Settings.System.MEDIA_BUTTON_RECEIVER, mFullUserId);
if (mediaButtonReceiverInfo == null) {
return;
}
String[] tokens = mediaButtonReceiverInfo.split(COMPONENT_NAME_USER_ID_DELIM);
if (tokens == null || (tokens.length != 2 && tokens.length != 3)) {
return;
}
mRestoredMediaButtonReceiver = ComponentName.unflattenFromString(tokens[0]);
mRestoredMediaButtonReceiverUserId = Integer.parseInt(tokens[1]);
if (tokens.length == 3) {
mRestoredMediaButtonReceiverComponentType = Integer.parseInt(tokens[2]);
} else {
mRestoredMediaButtonReceiverComponentType =
getComponentType(mRestoredMediaButtonReceiver);
}
}
public void destroySessionsForUserLocked(int userId) {
List sessions = mPriorityStack.getPriorityList(false, userId);
for (MediaSessionRecord session : sessions) {
destroySessionLocked(session);
}
}
public void dumpLocked(PrintWriter pw, String prefix) {
pw.print(prefix + "Record for full_user=" + mFullUserId);
// Dump managed profile user ids associated with this user.
int size = mFullUserIds.size();
for (int i = 0; i < size; i++) {
if (mFullUserIds.keyAt(i) != mFullUserIds.valueAt(i)
&& mFullUserIds.valueAt(i) == mFullUserId) {
pw.print(", profile_user=" + mFullUserIds.keyAt(i));
}
}
pw.println();
String indent = prefix + " ";
pw.println(indent + "Volume key long-press listener: " + mOnVolumeKeyLongPressListener);
pw.println(indent + "Volume key long-press listener package: "
+ getCallingPackageName(mOnVolumeKeyLongPressListenerUid));
pw.println(indent + "Media key listener: " + mOnMediaKeyListener);
pw.println(indent + "Media key listener package: "
+ getCallingPackageName(mOnMediaKeyListenerUid));
pw.println(indent + "Callback: " + mCallback);
pw.println(indent + "Last MediaButtonReceiver: " + mLastMediaButtonReceiver);
pw.println(indent + "Restored MediaButtonReceiver: " + mRestoredMediaButtonReceiver);
pw.println(indent + "Restored MediaButtonReceiverComponentType: "
+ mRestoredMediaButtonReceiverComponentType);
mPriorityStack.dump(pw, indent);
pw.println(indent + "Session2Tokens:");
for (int i = 0; i < mSession2TokensPerUser.size(); i++) {
List list = mSession2TokensPerUser.valueAt(i);
if (list == null || list.size() == 0) {
continue;
}
for (Session2Token token : list) {
pw.println(indent + " " + token);
}
}
}
@Override
public void onMediaButtonSessionChanged(MediaSessionRecord oldMediaButtonSession,
MediaSessionRecord newMediaButtonSession) {
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Media button session is changed to " + newMediaButtonSession);
}
synchronized (mLock) {
if (oldMediaButtonSession != null) {
mHandler.postSessionsChanged(oldMediaButtonSession.getUserId());
}
if (newMediaButtonSession != null) {
rememberMediaButtonReceiverLocked(newMediaButtonSession);
mHandler.postSessionsChanged(newMediaButtonSession.getUserId());
}
pushAddressedPlayerChangedLocked();
}
}
// Remember media button receiver and keep it in the persistent storage.
public void rememberMediaButtonReceiverLocked(MediaSessionRecord record) {
PendingIntent receiver = record.getMediaButtonReceiver();
mLastMediaButtonReceiver = receiver;
mRestoredMediaButtonReceiver = null;
mRestoredMediaButtonReceiverComponentType = COMPONENT_TYPE_INVALID;
String mediaButtonReceiverInfo = "";
if (receiver != null) {
ComponentName component = receiver.getIntent().getComponent();
if (component != null
&& record.getPackageName().equals(component.getPackageName())) {
String componentName = component.flattenToString();
int componentType = getComponentType(component);
mediaButtonReceiverInfo = String.join(COMPONENT_NAME_USER_ID_DELIM,
componentName, String.valueOf(record.getUserId()),
String.valueOf(componentType));
}
}
Settings.Secure.putStringForUser(mContentResolver,
Settings.System.MEDIA_BUTTON_RECEIVER, mediaButtonReceiverInfo,
mFullUserId);
}
private void pushAddressedPlayerChangedLocked() {
if (mCallback == null) {
return;
}
try {
MediaSessionRecord mediaButtonSession = getMediaButtonSessionLocked();
if (mediaButtonSession != null) {
mCallback.onAddressedPlayerChangedToMediaSession(
mediaButtonSession.getSessionToken());
} else if (mCurrentFullUserRecord.mLastMediaButtonReceiver != null) {
mCallback.onAddressedPlayerChangedToMediaButtonReceiver(
mCurrentFullUserRecord.mLastMediaButtonReceiver
.getIntent().getComponent());
} else if (mCurrentFullUserRecord.mRestoredMediaButtonReceiver != null) {
mCallback.onAddressedPlayerChangedToMediaButtonReceiver(
mCurrentFullUserRecord.mRestoredMediaButtonReceiver);
}
} catch (RemoteException e) {
Log.w(TAG, "Failed to pushAddressedPlayerChangedLocked", e);
}
}
private MediaSessionRecord getMediaButtonSessionLocked() {
return isGlobalPriorityActiveLocked()
? mGlobalPrioritySession : mPriorityStack.getMediaButtonSession();
}
private int getComponentType(@Nullable ComponentName componentName) {
if (componentName == null) {
return COMPONENT_TYPE_INVALID;
}
PackageManager pm = mContext.getPackageManager();
try {
ActivityInfo activityInfo = pm.getActivityInfo(componentName,
PackageManager.MATCH_DIRECT_BOOT_AWARE
| PackageManager.MATCH_DIRECT_BOOT_UNAWARE
| PackageManager.GET_ACTIVITIES);
if (activityInfo != null) {
return COMPONENT_TYPE_ACTIVITY;
}
} catch (NameNotFoundException e) {
}
try {
ServiceInfo serviceInfo = pm.getServiceInfo(componentName,
PackageManager.MATCH_DIRECT_BOOT_AWARE
| PackageManager.MATCH_DIRECT_BOOT_UNAWARE
| PackageManager.GET_SERVICES);
if (serviceInfo != null) {
return COMPONENT_TYPE_SERVICE;
}
} catch (NameNotFoundException e) {
}
// Pick legacy behavior for BroadcastReceiver or unknown.
return COMPONENT_TYPE_BROADCAST;
}
}
final class SessionsListenerRecord implements IBinder.DeathRecipient {
public final IActiveSessionsListener listener;
public final ComponentName componentName;
public final int userId;
public final int pid;
public final int uid;
SessionsListenerRecord(IActiveSessionsListener listener,
ComponentName componentName,
int userId, int pid, int uid) {
this.listener = listener;
this.componentName = componentName;
this.userId = userId;
this.pid = pid;
this.uid = uid;
}
@Override
public void binderDied() {
synchronized (mLock) {
mSessionsListeners.remove(this);
}
}
}
final class Session2TokensListenerRecord implements IBinder.DeathRecipient {
public final ISession2TokensListener listener;
public final int userId;
Session2TokensListenerRecord(ISession2TokensListener listener,
int userId) {
this.listener = listener;
this.userId = userId;
}
@Override
public void binderDied() {
synchronized (mLock) {
mSession2TokensListenerRecords.remove(this);
}
}
}
final class SettingsObserver extends ContentObserver {
private final Uri mSecureSettingsUri = Settings.Secure.getUriFor(
Settings.Secure.ENABLED_NOTIFICATION_LISTENERS);
private SettingsObserver() {
super(null);
}
private void observe() {
mContentResolver.registerContentObserver(mSecureSettingsUri,
false, this, USER_ALL);
}
@Override
public void onChange(boolean selfChange, Uri uri) {
updateActiveSessionListeners();
}
}
class SessionManagerImpl extends ISessionManager.Stub {
private static final String EXTRA_WAKELOCK_ACQUIRED =
"android.media.AudioService.WAKELOCK_ACQUIRED";
private static final int WAKELOCK_RELEASE_ON_FINISHED = 1980; // magic number
private boolean mVoiceButtonDown = false;
private boolean mVoiceButtonHandled = false;
@Override
public ISession createSession(String packageName, ISessionCallback cb, String tag,
Bundle sessionInfo, int userId) throws RemoteException {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
enforcePackageName(packageName, uid);
int resolvedUserId = ActivityManager.handleIncomingUser(pid, uid, userId,
false /* allowAll */, true /* requireFull */, "createSession", packageName);
if (cb == null) {
throw new IllegalArgumentException("Controller callback cannot be null");
}
return createSessionInternal(pid, uid, resolvedUserId, packageName, cb, tag,
sessionInfo).getSessionBinder();
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void notifySession2Created(Session2Token sessionToken) throws RemoteException {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
if (DEBUG) {
Log.d(TAG, "Session2 is created " + sessionToken);
}
if (uid != sessionToken.getUid()) {
throw new SecurityException("Unexpected Session2Token's UID, expected=" + uid
+ " but actually=" + sessionToken.getUid());
}
Controller2Callback callback = new Controller2Callback(sessionToken);
// Note: It's safe not to keep controller here because it wouldn't be GC'ed until
// it's closed.
// TODO: Keep controller as well for better readability
// because the GC behavior isn't straightforward.
MediaController2 controller = new MediaController2.Builder(mContext, sessionToken)
.setControllerCallback(new HandlerExecutor(mHandler), callback)
.build();
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public List getSessions(ComponentName componentName, int userId) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
int resolvedUserId = verifySessionsRequest(componentName, userId, pid, uid);
ArrayList tokens = new ArrayList<>();
synchronized (mLock) {
List records = getActiveSessionsLocked(resolvedUserId);
for (MediaSessionRecord record : records) {
tokens.add(record.getSessionToken());
}
}
return tokens;
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public ParceledListSlice getSession2Tokens(int userId) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
// Check that they can make calls on behalf of the user and
// get the final user id
int resolvedUserId = ActivityManager.handleIncomingUser(pid, uid, userId,
true /* allowAll */, true /* requireFull */, "getSession2Tokens",
null /* optional packageName */);
List result;
synchronized (mLock) {
result = getSession2TokensLocked(resolvedUserId);
}
return new ParceledListSlice(result);
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void addSessionsListener(IActiveSessionsListener listener,
ComponentName componentName, int userId) throws RemoteException {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
int resolvedUserId = verifySessionsRequest(componentName, userId, pid, uid);
synchronized (mLock) {
int index = findIndexOfSessionsListenerLocked(listener);
if (index != -1) {
Log.w(TAG, "ActiveSessionsListener is already added, ignoring");
return;
}
SessionsListenerRecord record = new SessionsListenerRecord(listener,
componentName, resolvedUserId, pid, uid);
try {
listener.asBinder().linkToDeath(record, 0);
} catch (RemoteException e) {
Log.e(TAG, "ActiveSessionsListener is dead, ignoring it", e);
return;
}
mSessionsListeners.add(record);
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void removeSessionsListener(IActiveSessionsListener listener)
throws RemoteException {
synchronized (mLock) {
int index = findIndexOfSessionsListenerLocked(listener);
if (index != -1) {
SessionsListenerRecord record = mSessionsListeners.remove(index);
try {
record.listener.asBinder().unlinkToDeath(record, 0);
} catch (Exception e) {
// ignore exceptions, the record is being removed
}
}
}
}
@Override
public void addSession2TokensListener(ISession2TokensListener listener,
int userId) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
// Check that they can make calls on behalf of the user and get the final user id.
int resolvedUserId = ActivityManager.handleIncomingUser(pid, uid, userId,
true /* allowAll */, true /* requireFull */, "addSession2TokensListener",
null /* optional packageName */);
synchronized (mLock) {
int index = findIndexOfSession2TokensListenerLocked(listener);
if (index >= 0) {
Log.w(TAG, "addSession2TokensListener is already added, ignoring");
return;
}
mSession2TokensListenerRecords.add(
new Session2TokensListenerRecord(listener, resolvedUserId));
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void removeSession2TokensListener(ISession2TokensListener listener) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
synchronized (mLock) {
int index = findIndexOfSession2TokensListenerLocked(listener);
if (index >= 0) {
Session2TokensListenerRecord listenerRecord =
mSession2TokensListenerRecords.remove(index);
try {
listenerRecord.listener.asBinder().unlinkToDeath(listenerRecord, 0);
} catch (Exception e) {
// Ignore exception.
}
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
/**
* Dispaches media key events. This is called when the foreground activity didn't handled
* the incoming media key event.
*
* Handles the dispatching of the media button events to one of the
* registered listeners, or if there was none, broadcast an
* ACTION_MEDIA_BUTTON intent to the rest of the system.
*
* @param packageName The caller package
* @param asSystemService {@code true} if the event sent to the session as if it was come
* from the system service instead of the app process. This helps sessions to
* distinguish between the key injection by the app and key events from the
* hardware devices. Should be used only when the volume key events aren't handled
* by foreground activity. {@code false} otherwise to tell session about the real
* caller.
* @param keyEvent a non-null KeyEvent whose key code is one of the
* supported media buttons
* @param needWakeLock true if a PARTIAL_WAKE_LOCK needs to be held
* while this key event is dispatched.
*/
@Override
public void dispatchMediaKeyEvent(String packageName, boolean asSystemService,
KeyEvent keyEvent, boolean needWakeLock) {
if (keyEvent == null || !KeyEvent.isMediaSessionKey(keyEvent.getKeyCode())) {
Log.w(TAG, "Attempted to dispatch null or non-media key event.");
return;
}
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
if (DEBUG) {
Log.d(TAG, "dispatchMediaKeyEvent, pkg=" + packageName + " pid=" + pid
+ ", uid=" + uid + ", asSystem=" + asSystemService + ", event="
+ keyEvent);
}
if (!isUserSetupComplete()) {
// Global media key handling can have the side-effect of starting new
// activities which is undesirable while setup is in progress.
Slog.i(TAG, "Not dispatching media key event because user "
+ "setup is in progress.");
return;
}
synchronized (mLock) {
boolean isGlobalPriorityActive = isGlobalPriorityActiveLocked();
if (isGlobalPriorityActive && uid != Process.SYSTEM_UID) {
// Prevent dispatching key event through reflection while the global
// priority session is active.
Slog.i(TAG, "Only the system can dispatch media key event "
+ "to the global priority session.");
return;
}
if (!isGlobalPriorityActive) {
if (mCurrentFullUserRecord.mOnMediaKeyListener != null) {
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Send " + keyEvent + " to the media key listener");
}
try {
mCurrentFullUserRecord.mOnMediaKeyListener.onMediaKey(keyEvent,
new MediaKeyListenerResultReceiver(packageName, pid, uid,
asSystemService, keyEvent, needWakeLock));
return;
} catch (RemoteException e) {
Log.w(TAG, "Failed to send " + keyEvent
+ " to the media key listener");
}
}
}
if (!isGlobalPriorityActive && isVoiceKey(keyEvent.getKeyCode())) {
handleVoiceKeyEventLocked(packageName, pid, uid, asSystemService, keyEvent,
needWakeLock);
} else {
dispatchMediaKeyEventLocked(packageName, pid, uid, asSystemService,
keyEvent, needWakeLock);
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
/**
* Dispatches media key events to session as system service. This is used only when the
* foreground activity has set
* {@link android.app.Activity#setMediaController(MediaController)} and a media key was
* pressed.
*
* @param packageName The caller's package name, obtained by Context#getPackageName()
* @param opPackageName The caller's op package name, obtained by Context#getOpPackageName()
* @param sessionToken token for the session that the controller is pointing to
* @param keyEvent media key event
* @see #dispatchVolumeKeyEvent
*/
@Override
public boolean dispatchMediaKeyEventToSessionAsSystemService(String packageName,
MediaSession.Token sessionToken, KeyEvent keyEvent) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
synchronized (mLock) {
MediaSessionRecord record = getMediaSessionRecordLocked(sessionToken);
if (record == null) {
Log.w(TAG, "Failed to find session to dispatch key event.");
return false;
}
if (DEBUG) {
Log.d(TAG, "dispatchMediaKeyEventToSessionAsSystemService, pkg="
+ packageName + ", pid=" + pid + ", uid=" + uid + ", sessionToken="
+ sessionToken + ", event=" + keyEvent + ", session=" + record);
}
return record.sendMediaButton(packageName, pid, uid, true /* asSystemService */,
keyEvent, 0, null);
}
} 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 (!UserHandle.isSameApp(uid, Process.BLUETOOTH_UID)) {
throw new SecurityException("Only Bluetooth service processes can set"
+ " Callback");
}
synchronized (mLock) {
int userId = UserHandle.getUserId(uid);
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null || user.mFullUserId != userId) {
Log.w(TAG, "Only the full user can set the callback"
+ ", userId=" + userId);
return;
}
user.mCallback = callback;
Log.d(TAG, "The callback " + user.mCallback
+ " is set by " + getCallingPackageName(uid));
if (user.mCallback == null) {
return;
}
try {
user.mCallback.asBinder().linkToDeath(
new IBinder.DeathRecipient() {
@Override
public void binderDied() {
synchronized (mLock) {
user.mCallback = null;
}
}
}, 0);
user.pushAddressedPlayerChangedLocked();
} catch (RemoteException e) {
Log.w(TAG, "Failed to set callback", e);
user.mCallback = null;
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void setOnVolumeKeyLongPressListener(IOnVolumeKeyLongPressListener listener) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
// Enforce SET_VOLUME_KEY_LONG_PRESS_LISTENER permission.
if (mContext.checkPermission(
android.Manifest.permission.SET_VOLUME_KEY_LONG_PRESS_LISTENER, pid, uid)
!= PackageManager.PERMISSION_GRANTED) {
throw new SecurityException("Must hold the SET_VOLUME_KEY_LONG_PRESS_LISTENER"
+ " permission.");
}
synchronized (mLock) {
int userId = UserHandle.getUserId(uid);
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null || user.mFullUserId != userId) {
Log.w(TAG, "Only the full user can set the volume key long-press listener"
+ ", userId=" + userId);
return;
}
if (user.mOnVolumeKeyLongPressListener != null
&& user.mOnVolumeKeyLongPressListenerUid != uid) {
Log.w(TAG, "The volume key long-press listener cannot be reset"
+ " by another app , mOnVolumeKeyLongPressListener="
+ user.mOnVolumeKeyLongPressListenerUid
+ ", uid=" + uid);
return;
}
user.mOnVolumeKeyLongPressListener = listener;
user.mOnVolumeKeyLongPressListenerUid = uid;
Log.d(TAG, "The volume key long-press listener "
+ listener + " is set by " + getCallingPackageName(uid));
if (user.mOnVolumeKeyLongPressListener != null) {
try {
user.mOnVolumeKeyLongPressListener.asBinder().linkToDeath(
new IBinder.DeathRecipient() {
@Override
public void binderDied() {
synchronized (mLock) {
user.mOnVolumeKeyLongPressListener = null;
}
}
}, 0);
} catch (RemoteException e) {
Log.w(TAG, "Failed to set death recipient "
+ user.mOnVolumeKeyLongPressListener);
user.mOnVolumeKeyLongPressListener = null;
}
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void setOnMediaKeyListener(IOnMediaKeyListener listener) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
// Enforce SET_MEDIA_KEY_LISTENER permission.
if (mContext.checkPermission(
android.Manifest.permission.SET_MEDIA_KEY_LISTENER, pid, uid)
!= PackageManager.PERMISSION_GRANTED) {
throw new SecurityException("Must hold the SET_MEDIA_KEY_LISTENER permission.");
}
synchronized (mLock) {
int userId = UserHandle.getUserId(uid);
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null || user.mFullUserId != userId) {
Log.w(TAG, "Only the full user can set the media key listener"
+ ", userId=" + userId);
return;
}
if (user.mOnMediaKeyListener != null && user.mOnMediaKeyListenerUid != uid) {
Log.w(TAG, "The media key listener cannot be reset by another app. "
+ ", mOnMediaKeyListenerUid=" + user.mOnMediaKeyListenerUid
+ ", uid=" + uid);
return;
}
user.mOnMediaKeyListener = listener;
user.mOnMediaKeyListenerUid = uid;
Log.d(TAG, "The media key listener " + user.mOnMediaKeyListener
+ " is set by " + getCallingPackageName(uid));
if (user.mOnMediaKeyListener != null) {
try {
user.mOnMediaKeyListener.asBinder().linkToDeath(
new IBinder.DeathRecipient() {
@Override
public void binderDied() {
synchronized (mLock) {
user.mOnMediaKeyListener = null;
}
}
}, 0);
} catch (RemoteException e) {
Log.w(TAG, "Failed to set death recipient " + user.mOnMediaKeyListener);
user.mOnMediaKeyListener = null;
}
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
/**
* Dispaches volume key events. This is called when the foreground activity didn't handled
* the incoming volume key event.
*
* Handles the dispatching of the volume button events to one of the
* registered listeners. If there's a volume key long-press listener and
* there's no active global priority session, long-presses will be sent to the
* long-press listener instead of adjusting volume.
*
* @param packageName The caller's package name, obtained by Context#getPackageName()
* @param opPackageName The caller's op package name, obtained by Context#getOpPackageName()
* @param asSystemService {@code true} if the event sent to the session as if it was come
* from the system service instead of the app process. This helps sessions to
* distinguish between the key injection by the app and key events from the
* hardware devices. Should be used only when the volume key events aren't handled
* by foreground activity. {@code false} otherwise to tell session about the real
* caller.
* @param keyEvent a non-null KeyEvent whose key code is one of the
* {@link KeyEvent#KEYCODE_VOLUME_UP},
* {@link KeyEvent#KEYCODE_VOLUME_DOWN},
* or {@link KeyEvent#KEYCODE_VOLUME_MUTE}.
* @param stream stream type to adjust volume.
* @param musicOnly true if both UI nor haptic feedback aren't needed when adjust volume.
* @see #dispatchVolumeKeyEventToSessionAsSystemService
*/
@Override
public void dispatchVolumeKeyEvent(String packageName, String opPackageName,
boolean asSystemService, KeyEvent keyEvent, int stream, boolean musicOnly) {
if (keyEvent == null
|| (keyEvent.getKeyCode() != KeyEvent.KEYCODE_VOLUME_UP
&& keyEvent.getKeyCode() != KeyEvent.KEYCODE_VOLUME_DOWN
&& keyEvent.getKeyCode() != KeyEvent.KEYCODE_VOLUME_MUTE)) {
Log.w(TAG, "Attempted to dispatch null or non-volume key event.");
return;
}
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "dispatchVolumeKeyEvent, pkg=" + packageName
+ ", opPkg=" + opPackageName + ", pid=" + pid + ", uid=" + uid
+ ", asSystem=" + asSystemService + ", event=" + keyEvent
+ ", stream=" + stream + ", musicOnly=" + musicOnly);
}
try {
synchronized (mLock) {
if (isGlobalPriorityActiveLocked()
|| mCurrentFullUserRecord.mOnVolumeKeyLongPressListener == null) {
dispatchVolumeKeyEventLocked(packageName, opPackageName, pid, uid,
asSystemService, keyEvent, stream, musicOnly);
} else {
// TODO: Consider the case when both volume up and down keys are pressed
// at the same time.
if (keyEvent.getAction() == KeyEvent.ACTION_DOWN) {
if (keyEvent.getRepeatCount() == 0) {
// Keeps the copy of the KeyEvent because it can be reused.
mCurrentFullUserRecord.mInitialDownVolumeKeyEvent =
KeyEvent.obtain(keyEvent);
mCurrentFullUserRecord.mInitialDownVolumeStream = stream;
mCurrentFullUserRecord.mInitialDownMusicOnly = musicOnly;
mHandler.sendMessageDelayed(
mHandler.obtainMessage(
MessageHandler.MSG_VOLUME_INITIAL_DOWN,
mCurrentFullUserRecord.mFullUserId, 0),
mLongPressTimeout);
}
if (keyEvent.getRepeatCount() > 0 || keyEvent.isLongPress()) {
mHandler.removeMessages(MessageHandler.MSG_VOLUME_INITIAL_DOWN);
if (mCurrentFullUserRecord.mInitialDownVolumeKeyEvent != null) {
dispatchVolumeKeyLongPressLocked(
mCurrentFullUserRecord.mInitialDownVolumeKeyEvent);
// Mark that the key is already handled.
mCurrentFullUserRecord.mInitialDownVolumeKeyEvent = null;
}
dispatchVolumeKeyLongPressLocked(keyEvent);
}
} else { // if up
mHandler.removeMessages(MessageHandler.MSG_VOLUME_INITIAL_DOWN);
if (mCurrentFullUserRecord.mInitialDownVolumeKeyEvent != null
&& mCurrentFullUserRecord.mInitialDownVolumeKeyEvent
.getDownTime() == keyEvent.getDownTime()) {
// Short-press. Should change volume.
dispatchVolumeKeyEventLocked(packageName, opPackageName, pid, uid,
asSystemService,
mCurrentFullUserRecord.mInitialDownVolumeKeyEvent,
mCurrentFullUserRecord.mInitialDownVolumeStream,
mCurrentFullUserRecord.mInitialDownMusicOnly);
dispatchVolumeKeyEventLocked(packageName, opPackageName, pid, uid,
asSystemService, keyEvent, stream, musicOnly);
} else {
dispatchVolumeKeyLongPressLocked(keyEvent);
}
}
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
private void dispatchVolumeKeyEventLocked(String packageName, String opPackageName, int pid,
int uid, boolean asSystemService, KeyEvent keyEvent, int stream,
boolean musicOnly) {
boolean down = keyEvent.getAction() == KeyEvent.ACTION_DOWN;
boolean up = keyEvent.getAction() == KeyEvent.ACTION_UP;
int direction = 0;
boolean isMute = false;
switch (keyEvent.getKeyCode()) {
case KeyEvent.KEYCODE_VOLUME_UP:
direction = AudioManager.ADJUST_RAISE;
break;
case KeyEvent.KEYCODE_VOLUME_DOWN:
direction = AudioManager.ADJUST_LOWER;
break;
case KeyEvent.KEYCODE_VOLUME_MUTE:
isMute = true;
break;
}
if (down || up) {
int flags = AudioManager.FLAG_FROM_KEY;
if (musicOnly) {
// This flag is used when the screen is off to only affect active media.
flags |= AudioManager.FLAG_ACTIVE_MEDIA_ONLY;
} else {
// These flags are consistent with the home screen
if (up) {
flags |= AudioManager.FLAG_PLAY_SOUND | AudioManager.FLAG_VIBRATE;
} else {
flags |= AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_VIBRATE;
}
}
if (direction != 0) {
// If this is action up we want to send a beep for non-music events
if (up) {
direction = 0;
}
dispatchAdjustVolumeLocked(packageName, opPackageName, pid, uid,
asSystemService, stream, direction, flags);
} else if (isMute) {
if (down && keyEvent.getRepeatCount() == 0) {
dispatchAdjustVolumeLocked(packageName, opPackageName, pid, uid,
asSystemService, stream, AudioManager.ADJUST_TOGGLE_MUTE, flags);
}
}
}
}
/**
* Dispatches volume key events to session as system service. This is used only when the
* foreground activity has set
* {@link android.app.Activity#setMediaController(MediaController)} and a hardware volume
* key was pressed.
*
* @param packageName The caller's package name, obtained by Context#getPackageName()
* @param opPackageName The caller's op package name, obtained by Context#getOpPackageName()
* @param sessionToken token for the session that the controller is pointing to
* @param keyEvent volume key event
* @see #dispatchVolumeKeyEvent
*/
@Override
public void dispatchVolumeKeyEventToSessionAsSystemService(String packageName,
String opPackageName, MediaSession.Token sessionToken, KeyEvent keyEvent) {
int pid = Binder.getCallingPid();
int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
synchronized (mLock) {
MediaSessionRecord record = getMediaSessionRecordLocked(sessionToken);
if (record == null) {
Log.w(TAG, "Failed to find session to dispatch key event, token="
+ sessionToken + ". Fallbacks to the default handling.");
dispatchVolumeKeyEventLocked(packageName, opPackageName, pid, uid, true,
keyEvent, AudioManager.USE_DEFAULT_STREAM_TYPE, false);
return;
}
if (DEBUG) {
Log.d(TAG, "dispatchVolumeKeyEventToSessionAsSystemService, pkg="
+ packageName + ", opPkg=" + opPackageName + ", pid=" + pid
+ ", uid=" + uid + ", sessionToken=" + sessionToken + ", event="
+ keyEvent + ", session=" + record);
}
switch (keyEvent.getAction()) {
case KeyEvent.ACTION_DOWN: {
int direction = 0;
switch (keyEvent.getKeyCode()) {
case KeyEvent.KEYCODE_VOLUME_UP:
direction = AudioManager.ADJUST_RAISE;
break;
case KeyEvent.KEYCODE_VOLUME_DOWN:
direction = AudioManager.ADJUST_LOWER;
break;
case KeyEvent.KEYCODE_VOLUME_MUTE:
direction = AudioManager.ADJUST_TOGGLE_MUTE;
break;
}
record.adjustVolume(packageName, opPackageName, pid, uid,
null /* caller */, true /* asSystemService */, direction,
AudioManager.FLAG_SHOW_UI, false /* useSuggested */);
break;
}
case KeyEvent.ACTION_UP: {
final int flags =
AudioManager.FLAG_PLAY_SOUND | AudioManager.FLAG_VIBRATE
| AudioManager.FLAG_FROM_KEY;
record.adjustVolume(packageName, opPackageName, pid, uid,
null /* caller */, true /* asSystemService */, 0,
flags, false /* useSuggested */);
}
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void dispatchAdjustVolume(String packageName, String opPackageName,
int suggestedStream, int delta, int flags) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
synchronized (mLock) {
dispatchAdjustVolumeLocked(packageName, opPackageName, pid, uid, false,
suggestedStream, delta, flags);
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void registerRemoteVolumeController(IRemoteVolumeController rvc) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
synchronized (mLock) {
try {
enforceStatusBarServicePermission("listen for volume changes", pid, uid);
mRemoteVolumeControllers.register(rvc);
} finally {
Binder.restoreCallingIdentity(token);
}
}
}
@Override
public void unregisterRemoteVolumeController(IRemoteVolumeController rvc) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
synchronized (mLock) {
try {
enforceStatusBarServicePermission("listen for volume changes", pid, uid);
mRemoteVolumeControllers.unregister(rvc);
} finally {
Binder.restoreCallingIdentity(token);
}
}
}
@Override
public boolean isGlobalPriorityActive() {
synchronized (mLock) {
return isGlobalPriorityActiveLocked();
}
}
@Override
public void dump(FileDescriptor fd, final PrintWriter pw, String[] args) {
if (!DumpUtils.checkDumpPermission(mContext, TAG, pw)) return;
pw.println("MEDIA SESSION SERVICE (dumpsys media_session)");
pw.println();
synchronized (mLock) {
pw.println(mSessionsListeners.size() + " sessions listeners.");
pw.println("Global priority session is " + mGlobalPrioritySession);
if (mGlobalPrioritySession != null) {
mGlobalPrioritySession.dump(pw, " ");
}
pw.println("User Records:");
int count = mUserRecords.size();
for (int i = 0; i < count; i++) {
mUserRecords.valueAt(i).dumpLocked(pw, "");
}
mAudioPlayerStateMonitor.dump(mContext, pw, "");
}
}
/**
* Returns if the controller's package is trusted (i.e. has either MEDIA_CONTENT_CONTROL
* permission or an enabled notification listener)
*
* @param controllerPackageName package name of the controller app
* @param controllerPid pid of the controller app
* @param controllerUid uid of the controller app
*/
@Override
public boolean isTrusted(String controllerPackageName, int controllerPid, int controllerUid)
throws RemoteException {
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
// Don't perform sanity check between controllerPackageName and controllerUid.
// When an (activity|service) runs on the another apps process by specifying
// android:process in the AndroidManifest.xml, then PID and UID would have the
// running process' information instead of the (activity|service) that has created
// MediaController.
// Note that we can use Context#getOpPackageName() instead of
// Context#getPackageName() for getting package name that matches with the PID/UID,
// but it doesn't tell which package has created the MediaController, so useless.
return hasMediaControlPermission(UserHandle.getUserId(uid), controllerPackageName,
controllerPid, controllerUid);
} finally {
Binder.restoreCallingIdentity(token);
}
}
// For MediaSession
private int verifySessionsRequest(ComponentName componentName, int userId, final int pid,
final int uid) {
String packageName = null;
if (componentName != null) {
// If they gave us a component name verify they own the
// package
packageName = componentName.getPackageName();
enforcePackageName(packageName, uid);
}
// Check that they can make calls on behalf of the user and
// get the final user id
int resolvedUserId = ActivityManager.handleIncomingUser(pid, uid, userId,
true /* allowAll */, true /* requireFull */, "getSessions", packageName);
// Check if they have the permissions or their component is
// enabled for the user they're calling from.
enforceMediaPermissions(componentName, pid, uid, resolvedUserId);
return resolvedUserId;
}
private boolean hasMediaControlPermission(int resolvedUserId, String packageName,
int pid, int uid) throws RemoteException {
// Allow API calls from the System UI and Settings
if (hasStatusBarServicePermission(pid, uid)) {
return true;
}
// Check if it's system server or has MEDIA_CONTENT_CONTROL.
// Note that system server doesn't have MEDIA_CONTENT_CONTROL, so we need extra
// check here.
if (uid == Process.SYSTEM_UID || mContext.checkPermission(
android.Manifest.permission.MEDIA_CONTENT_CONTROL, pid, uid)
== PackageManager.PERMISSION_GRANTED) {
return true;
} else if (DEBUG) {
Log.d(TAG, packageName + " (uid=" + uid + ") hasn't granted MEDIA_CONTENT_CONTROL");
}
// You may not access another user's content as an enabled listener.
final int userId = UserHandle.getUserId(uid);
if (resolvedUserId != userId) {
return false;
}
// TODO(jaewan): (Post-P) Propose NotificationManager#hasEnabledNotificationListener(
// String pkgName) to notification team for optimization
final List enabledNotificationListeners =
mNotificationManager.getEnabledNotificationListeners(userId);
if (enabledNotificationListeners != null) {
for (int i = 0; i < enabledNotificationListeners.size(); i++) {
if (TextUtils.equals(packageName,
enabledNotificationListeners.get(i).getPackageName())) {
return true;
}
}
}
if (DEBUG) {
Log.d(TAG, packageName + " (uid=" + uid + ") doesn't have an enabled "
+ "notification listener");
}
return false;
}
private void dispatchAdjustVolumeLocked(String packageName, String opPackageName, int pid,
int uid, boolean asSystemService, int suggestedStream, int direction, int flags) {
MediaSessionRecord session = isGlobalPriorityActiveLocked() ? mGlobalPrioritySession
: mCurrentFullUserRecord.mPriorityStack.getDefaultVolumeSession();
boolean preferSuggestedStream = false;
if (isValidLocalStreamType(suggestedStream)
&& AudioSystem.isStreamActive(suggestedStream, 0)) {
preferSuggestedStream = true;
}
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Adjusting " + session + " by " + direction + ". flags="
+ flags + ", suggestedStream=" + suggestedStream
+ ", preferSuggestedStream=" + preferSuggestedStream);
}
if (session == null || preferSuggestedStream) {
if ((flags & AudioManager.FLAG_ACTIVE_MEDIA_ONLY) != 0
&& !AudioSystem.isStreamActive(AudioManager.STREAM_MUSIC, 0)) {
if (DEBUG) {
Log.d(TAG, "No active session to adjust, skipping media only volume event");
}
return;
}
// Execute mAudioService.adjustSuggestedStreamVolume() on
// handler thread of MediaSessionService.
// This will release the MediaSessionService.mLock sooner and avoid
// a potential deadlock between MediaSessionService.mLock and
// ActivityManagerService lock.
mHandler.post(new Runnable() {
@Override
public void run() {
final String callingOpPackageName;
final int callingUid;
if (asSystemService) {
callingOpPackageName = mContext.getOpPackageName();
callingUid = Process.myUid();
} else {
callingOpPackageName = opPackageName;
callingUid = uid;
}
try {
mAudioManagerInternal.adjustSuggestedStreamVolumeForUid(suggestedStream,
direction, flags, callingOpPackageName, callingUid);
} catch (SecurityException | IllegalArgumentException e) {
Log.e(TAG, "Cannot adjust volume: direction=" + direction
+ ", suggestedStream=" + suggestedStream + ", flags=" + flags
+ ", packageName=" + packageName + ", uid=" + uid
+ ", asSystemService=" + asSystemService, e);
}
}
});
} else {
session.adjustVolume(packageName, opPackageName, pid, uid, null, asSystemService,
direction, flags, true);
}
}
private void handleVoiceKeyEventLocked(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, boolean needWakeLock) {
int action = keyEvent.getAction();
boolean isLongPress = (keyEvent.getFlags() & KeyEvent.FLAG_LONG_PRESS) != 0;
if (action == KeyEvent.ACTION_DOWN) {
if (keyEvent.getRepeatCount() == 0) {
mVoiceButtonDown = true;
mVoiceButtonHandled = false;
} else if (mVoiceButtonDown && !mVoiceButtonHandled && isLongPress) {
mVoiceButtonHandled = true;
startVoiceInput(needWakeLock);
}
} else if (action == KeyEvent.ACTION_UP) {
if (mVoiceButtonDown) {
mVoiceButtonDown = false;
if (!mVoiceButtonHandled && !keyEvent.isCanceled()) {
// Resend the down then send this event through
KeyEvent downEvent = KeyEvent.changeAction(keyEvent, KeyEvent.ACTION_DOWN);
dispatchMediaKeyEventLocked(packageName, pid, uid, asSystemService,
downEvent, needWakeLock);
dispatchMediaKeyEventLocked(packageName, pid, uid, asSystemService,
keyEvent, needWakeLock);
}
}
}
}
private void dispatchMediaKeyEventLocked(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, boolean needWakeLock) {
MediaSessionRecord session = mCurrentFullUserRecord.getMediaButtonSessionLocked();
if (session != null) {
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Sending " + keyEvent + " to " + session);
}
if (needWakeLock) {
mKeyEventReceiver.aquireWakeLockLocked();
}
// If we don't need a wakelock use -1 as the id so we won't release it later.
session.sendMediaButton(packageName, pid, uid, asSystemService, keyEvent,
needWakeLock ? mKeyEventReceiver.mLastTimeoutId : -1,
mKeyEventReceiver);
if (mCurrentFullUserRecord.mCallback != null) {
try {
mCurrentFullUserRecord.mCallback.onMediaKeyEventDispatchedToMediaSession(
keyEvent, session.getSessionToken());
} catch (RemoteException e) {
Log.w(TAG, "Failed to send callback", e);
}
}
} else if (mCurrentFullUserRecord.mLastMediaButtonReceiver != null
|| mCurrentFullUserRecord.mRestoredMediaButtonReceiver != null) {
if (needWakeLock) {
mKeyEventReceiver.aquireWakeLockLocked();
}
Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
mediaButtonIntent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
mediaButtonIntent.putExtra(Intent.EXTRA_KEY_EVENT, keyEvent);
// TODO: Find a way to also send PID/UID in secure way.
String callerPackageName =
(asSystemService) ? mContext.getPackageName() : packageName;
mediaButtonIntent.putExtra(Intent.EXTRA_PACKAGE_NAME, callerPackageName);
try {
if (mCurrentFullUserRecord.mLastMediaButtonReceiver != null) {
PendingIntent receiver = mCurrentFullUserRecord.mLastMediaButtonReceiver;
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Sending " + keyEvent
+ " to the last known PendingIntent " + receiver);
}
receiver.send(mContext,
needWakeLock ? mKeyEventReceiver.mLastTimeoutId : -1,
mediaButtonIntent, mKeyEventReceiver, mHandler);
if (mCurrentFullUserRecord.mCallback != null) {
ComponentName componentName = mCurrentFullUserRecord
.mLastMediaButtonReceiver.getIntent().getComponent();
if (componentName != null) {
mCurrentFullUserRecord.mCallback
.onMediaKeyEventDispatchedToMediaButtonReceiver(
keyEvent, componentName);
}
}
} else {
ComponentName receiver =
mCurrentFullUserRecord.mRestoredMediaButtonReceiver;
int componentType = mCurrentFullUserRecord
.mRestoredMediaButtonReceiverComponentType;
UserHandle userHandle = UserHandle.of(mCurrentFullUserRecord
.mRestoredMediaButtonReceiverUserId);
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Sending " + keyEvent + " to the restored intent "
+ receiver + ", type=" + componentType);
}
mediaButtonIntent.setComponent(receiver);
try {
switch (componentType) {
case FullUserRecord.COMPONENT_TYPE_ACTIVITY:
mContext.startActivityAsUser(mediaButtonIntent, userHandle);
break;
case FullUserRecord.COMPONENT_TYPE_SERVICE:
mContext.startForegroundServiceAsUser(mediaButtonIntent,
userHandle);
break;
default:
// Legacy behavior for other cases.
mContext.sendBroadcastAsUser(mediaButtonIntent, userHandle);
}
} catch (Exception e) {
Log.w(TAG, "Error sending media button to the restored intent "
+ receiver + ", type=" + componentType, e);
}
if (mCurrentFullUserRecord.mCallback != null) {
mCurrentFullUserRecord.mCallback
.onMediaKeyEventDispatchedToMediaButtonReceiver(
keyEvent, receiver);
}
}
} catch (CanceledException e) {
Log.i(TAG, "Error sending key event to media button receiver "
+ mCurrentFullUserRecord.mLastMediaButtonReceiver, e);
} catch (RemoteException e) {
Log.w(TAG, "Failed to send callback", e);
}
}
}
private void startVoiceInput(boolean needWakeLock) {
Intent voiceIntent = null;
// select which type of search to launch:
// - screen on and device unlocked: action is ACTION_WEB_SEARCH
// - device locked or screen off: action is
// ACTION_VOICE_SEARCH_HANDS_FREE
// with EXTRA_SECURE set to true if the device is securely locked
PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
boolean isLocked = mKeyguardManager != null && mKeyguardManager.isKeyguardLocked();
if (!isLocked && pm.isScreenOn()) {
voiceIntent = new Intent(android.speech.RecognizerIntent.ACTION_WEB_SEARCH);
Log.i(TAG, "voice-based interactions: about to use ACTION_WEB_SEARCH");
} else {
voiceIntent = new Intent(RecognizerIntent.ACTION_VOICE_SEARCH_HANDS_FREE);
voiceIntent.putExtra(RecognizerIntent.EXTRA_SECURE,
isLocked && mKeyguardManager.isKeyguardSecure());
Log.i(TAG, "voice-based interactions: about to use ACTION_VOICE_SEARCH_HANDS_FREE");
}
// start the search activity
if (needWakeLock) {
mMediaEventWakeLock.acquire();
}
try {
if (voiceIntent != null) {
voiceIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
if (DEBUG) Log.d(TAG, "voiceIntent: " + voiceIntent);
mContext.startActivityAsUser(voiceIntent, UserHandle.CURRENT);
}
} catch (ActivityNotFoundException e) {
Log.w(TAG, "No activity for search: " + e);
} finally {
if (needWakeLock) {
mMediaEventWakeLock.release();
}
}
}
private boolean isVoiceKey(int keyCode) {
return keyCode == KeyEvent.KEYCODE_HEADSETHOOK
|| (!mHasFeatureLeanback && keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE);
}
private boolean isUserSetupComplete() {
return Settings.Secure.getIntForUser(mContext.getContentResolver(),
Settings.Secure.USER_SETUP_COMPLETE, 0, UserHandle.USER_CURRENT) != 0;
}
// we only handle public stream types, which are 0-5
private boolean isValidLocalStreamType(int streamType) {
return streamType >= AudioManager.STREAM_VOICE_CALL
&& streamType <= AudioManager.STREAM_NOTIFICATION;
}
private class MediaKeyListenerResultReceiver extends ResultReceiver implements Runnable {
private final String mPackageName;
private final int mPid;
private final int mUid;
private final boolean mAsSystemService;
private final KeyEvent mKeyEvent;
private final boolean mNeedWakeLock;
private boolean mHandled;
private MediaKeyListenerResultReceiver(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, boolean needWakeLock) {
super(mHandler);
mHandler.postDelayed(this, MEDIA_KEY_LISTENER_TIMEOUT);
mPackageName = packageName;
mPid = pid;
mUid = uid;
mAsSystemService = asSystemService;
mKeyEvent = keyEvent;
mNeedWakeLock = needWakeLock;
}
@Override
public void run() {
Log.d(TAG, "The media key listener is timed-out for " + mKeyEvent);
dispatchMediaKeyEvent();
}
@Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
if (resultCode == MediaSessionManager.RESULT_MEDIA_KEY_HANDLED) {
mHandled = true;
mHandler.removeCallbacks(this);
return;
}
dispatchMediaKeyEvent();
}
private void dispatchMediaKeyEvent() {
if (mHandled) {
return;
}
mHandled = true;
mHandler.removeCallbacks(this);
synchronized (mLock) {
if (!isGlobalPriorityActiveLocked()
&& isVoiceKey(mKeyEvent.getKeyCode())) {
handleVoiceKeyEventLocked(mPackageName, mPid, mUid, mAsSystemService,
mKeyEvent, mNeedWakeLock);
} else {
dispatchMediaKeyEventLocked(mPackageName, mPid, mUid, mAsSystemService,
mKeyEvent, mNeedWakeLock);
}
}
}
}
private KeyEventWakeLockReceiver mKeyEventReceiver = new KeyEventWakeLockReceiver(mHandler);
class KeyEventWakeLockReceiver extends ResultReceiver implements Runnable,
PendingIntent.OnFinished {
private final Handler mHandler;
private int mRefCount = 0;
private int mLastTimeoutId = 0;
KeyEventWakeLockReceiver(Handler handler) {
super(handler);
mHandler = handler;
}
public void onTimeout() {
synchronized (mLock) {
if (mRefCount == 0) {
// We've already released it, so just return
return;
}
mLastTimeoutId++;
mRefCount = 0;
releaseWakeLockLocked();
}
}
public void aquireWakeLockLocked() {
if (mRefCount == 0) {
mMediaEventWakeLock.acquire();
}
mRefCount++;
mHandler.removeCallbacks(this);
mHandler.postDelayed(this, WAKELOCK_TIMEOUT);
}
@Override
public void run() {
onTimeout();
}
@Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
if (resultCode < mLastTimeoutId) {
// Ignore results from calls that were before the last
// timeout, just in case.
return;
} else {
synchronized (mLock) {
if (mRefCount > 0) {
mRefCount--;
if (mRefCount == 0) {
releaseWakeLockLocked();
}
}
}
}
}
private void releaseWakeLockLocked() {
mMediaEventWakeLock.release();
mHandler.removeCallbacks(this);
}
@Override
public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode,
String resultData, Bundle resultExtras) {
onReceiveResult(resultCode, null);
}
};
BroadcastReceiver mKeyEventDone = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent == null) {
return;
}
Bundle extras = intent.getExtras();
if (extras == null) {
return;
}
synchronized (mLock) {
if (extras.containsKey(EXTRA_WAKELOCK_ACQUIRED)
&& mMediaEventWakeLock.isHeld()) {
mMediaEventWakeLock.release();
}
}
}
};
}
final class MessageHandler extends Handler {
private static final int MSG_SESSIONS_CHANGED = 1;
private static final int MSG_VOLUME_INITIAL_DOWN = 2;
private final SparseArray mIntegerCache = new SparseArray<>();
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_SESSIONS_CHANGED:
pushSessionsChanged((int) msg.obj);
break;
case MSG_VOLUME_INITIAL_DOWN:
synchronized (mLock) {
FullUserRecord user = mUserRecords.get((int) msg.arg1);
if (user != null && user.mInitialDownVolumeKeyEvent != null) {
dispatchVolumeKeyLongPressLocked(user.mInitialDownVolumeKeyEvent);
// Mark that the key is already handled.
user.mInitialDownVolumeKeyEvent = null;
}
}
break;
}
}
public void postSessionsChanged(int userId) {
// Use object instead of the arguments when posting message to remove pending requests.
Integer userIdInteger = mIntegerCache.get(userId);
if (userIdInteger == null) {
userIdInteger = Integer.valueOf(userId);
mIntegerCache.put(userId, userIdInteger);
}
removeMessages(MSG_SESSIONS_CHANGED, userIdInteger);
obtainMessage(MSG_SESSIONS_CHANGED, userIdInteger).sendToTarget();
}
}
private class Controller2Callback extends MediaController2.ControllerCallback {
private final Session2Token mToken;
Controller2Callback(Session2Token token) {
mToken = token;
}
@Override
public void onConnected(MediaController2 controller, Session2CommandGroup allowedCommands) {
synchronized (mLock) {
int userId = UserHandle.getUserId(mToken.getUid());
mSession2TokensPerUser.get(userId).add(mToken);
pushSession2TokensChangedLocked(userId);
}
}
@Override
public void onDisconnected(MediaController2 controller) {
synchronized (mLock) {
int userId = UserHandle.getUserId(mToken.getUid());
mSession2TokensPerUser.get(userId).remove(mToken);
pushSession2TokensChangedLocked(userId);
}
}
}
}