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android / platform / prebuilts / fullsdk / sources / android-31 / refs/heads/main / . / com / android / server / media / MediaSessionService.java
blob: b477ea353c25f66586a109728762d996b8b61207 [file] [log] [blame]
/*
* 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.Manifest.permission.INTERACT_ACROSS_USERS_FULL;
import static android.os.UserHandle.ALL;
import static android.os.UserHandle.CURRENT;
import static com.android.server.media.MediaKeyDispatcher.KEY_EVENT_LONG_PRESS;
import static com.android.server.media.MediaKeyDispatcher.isDoubleTapOverridden;
import static com.android.server.media.MediaKeyDispatcher.isLongPressOverridden;
import static com.android.server.media.MediaKeyDispatcher.isSingleTapOverridden;
import static com.android.server.media.MediaKeyDispatcher.isTripleTapOverridden;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.app.ActivityManager;
import android.app.KeyguardManager;
import android.app.NotificationManager;
import android.app.PendingIntent;
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.IntentFilter;
import android.content.pm.PackageManager;
import android.media.AudioManager;
import android.media.AudioPlaybackConfiguration;
import android.media.AudioSystem;
import android.media.IRemoteSessionCallback;
import android.media.MediaCommunicationManager;
import android.media.Session2Token;
import android.media.session.IActiveSessionsListener;
import android.media.session.IOnMediaKeyEventDispatchedListener;
import android.media.session.IOnMediaKeyEventSessionChangedListener;
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.os.Binder;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.IBinder;
import android.os.Message;
import android.os.PowerExemptionManager;
import android.os.PowerManager;
import android.os.Process;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.ResultReceiver;
import android.os.ShellCallback;
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.SparseArray;
import android.util.SparseIntArray;
import android.view.KeyEvent;
import android.view.ViewConfiguration;
import com.android.internal.R;
import com.android.internal.annotations.GuardedBy;
import com.android.server.LocalManagerRegistry;
import com.android.server.SystemService;
import com.android.server.Watchdog;
import com.android.server.Watchdog.Monitor;
import com.android.server.am.ActivityManagerLocal;
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.HashMap;
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.
static final boolean DEBUG_KEY_EVENT = true;
private static final int WAKELOCK_TIMEOUT = 5000;
private static final int MEDIA_KEY_LISTENER_TIMEOUT = 1000;
private static final int SESSION_CREATION_LIMIT_PER_UID = 100;
private static final int LONG_PRESS_TIMEOUT = ViewConfiguration.getLongPressTimeout()
+ /* Buffer for delayed delivery of key event */ 50;
private static final int MULTI_TAP_TIMEOUT = ViewConfiguration.getMultiPressTimeout();
/**
* Copied from Settings.System.MEDIA_BUTTON_RECEIVER
*/
private static final String MEDIA_BUTTON_RECEIVER = "media_button_receiver";
private final Context mContext;
private final SessionManagerImpl mSessionManagerImpl;
private final MessageHandler mHandler = new MessageHandler();
private final PowerManager.WakeLock mMediaEventWakeLock;
private final NotificationManager mNotificationManager;
private final Object mLock = new Object();
private final HandlerThread mRecordThread = new HandlerThread("SessionRecordThread");
// Keeps the full user id for each user.
@GuardedBy("mLock")
private final SparseIntArray mFullUserIds = new SparseIntArray();
@GuardedBy("mLock")
private final SparseArray<FullUserRecord> mUserRecords = new SparseArray<FullUserRecord>();
@GuardedBy("mLock")
private final ArrayList<SessionsListenerRecord> mSessionsListeners =
new ArrayList<SessionsListenerRecord>();
@GuardedBy("mLock")
private final List<Session2TokensListenerRecord> mSession2TokensListenerRecords =
new ArrayList<>();
private KeyguardManager mKeyguardManager;
private AudioManager mAudioManager;
private boolean mHasFeatureLeanback;
private ActivityManagerLocal mActivityManagerLocal;
// 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<IRemoteSessionCallback> mRemoteVolumeControllers =
new RemoteCallbackList<>();
private MediaSessionPolicyProvider mCustomMediaSessionPolicyProvider;
private MediaKeyDispatcher mCustomMediaKeyDispatcher;
private MediaCommunicationManager mCommunicationManager;
private final MediaCommunicationManager.SessionCallback mSession2TokenCallback =
new MediaCommunicationManager.SessionCallback() {
@Override
public void onSession2TokenCreated(Session2Token token) {
if (DEBUG) {
Log.d(TAG, "Session2 is created " + token);
}
MediaSession2Record record = new MediaSession2Record(token,
MediaSessionService.this, mRecordThread.getLooper(), 0);
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(record.getUserId());
if (user != null) {
user.mPriorityStack.addSession(record);
}
}
}
};
public MediaSessionService(Context context) {
super(context);
mContext = context;
mSessionManagerImpl = new SessionManagerImpl();
PowerManager pm = mContext.getSystemService(PowerManager.class);
mMediaEventWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "handleMediaEvent");
mNotificationManager = mContext.getSystemService(NotificationManager.class);
mAudioManager = mContext.getSystemService(AudioManager.class);
}
@Override
public void onStart() {
publishBinderService(Context.MEDIA_SESSION_SERVICE, mSessionManagerImpl);
Watchdog.getInstance().addMonitor(this);
mKeyguardManager = (KeyguardManager) mContext.getSystemService(Context.KEYGUARD_SERVICE);
mAudioPlayerStateMonitor = AudioPlayerStateMonitor.getInstance(mContext);
mAudioPlayerStateMonitor.registerListener(
(config, isRemoved) -> {
if (DEBUG) {
Log.d(TAG, "Audio playback is changed, config=" + config
+ ", removed=" + isRemoved);
}
if (config.getPlayerType()
== AudioPlaybackConfiguration.PLAYER_TYPE_JAM_SOUNDPOOL) {
return;
}
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(
UserHandle.getUserHandleForUid(config.getClientUid())
.getIdentifier());
if (user != null) {
user.mPriorityStack.updateMediaButtonSessionIfNeeded();
}
}
}, null /* handler */);
mHasFeatureLeanback = mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_LEANBACK);
updateUser();
instantiateCustomProvider(mContext.getResources().getString(
R.string.config_customMediaSessionPolicyProvider));
instantiateCustomDispatcher(mContext.getResources().getString(
R.string.config_customMediaKeyDispatcher));
mRecordThread.start();
final IntentFilter filter = new IntentFilter(
NotificationManager.ACTION_NOTIFICATION_LISTENER_ENABLED_CHANGED);
mContext.registerReceiver(mNotificationListenerEnabledChangedReceiver, filter);
mActivityManagerLocal = LocalManagerRegistry.getManager(ActivityManagerLocal.class);
}
@Override
public void onBootPhase(int phase) {
super.onBootPhase(phase);
switch (phase) {
// This ensures MediaCommunicationService is started
case PHASE_BOOT_COMPLETED:
mCommunicationManager = mContext.getSystemService(MediaCommunicationManager.class);
mCommunicationManager.registerSessionCallback(new HandlerExecutor(mHandler),
mSession2TokenCallback);
break;
case PHASE_ACTIVITY_MANAGER_READY:
MediaSessionDeviceConfig.initialize(mContext);
break;
}
}
private final BroadcastReceiver mNotificationListenerEnabledChangedReceiver =
new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
updateActiveSessionListeners();
}
};
private boolean isGlobalPriorityActiveLocked() {
return mGlobalPrioritySession != null && mGlobalPrioritySession.isActive();
}
void onSessionActiveStateChanged(MediaSessionRecordImpl record) {
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(record.getUserId());
if (user == null) {
Log.w(TAG, "Unknown session updated. Ignoring.");
return;
}
if (record.isSystemPriority()) {
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.onSessionActiveStateChanged(record);
}
mHandler.postSessionsChanged(record);
}
}
// Currently only media1 can become global priority session.
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<MediaSessionRecord> getActiveSessionsLocked(int userId) {
List<MediaSessionRecord> records = new ArrayList<>();
if (userId == ALL.getIdentifier()) {
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 == ALL.getIdentifier()
|| userId == mGlobalPrioritySession.getUserId())) {
records.add(0, mGlobalPrioritySession);
}
return records;
}
List<Session2Token> getSession2TokensLocked(int userId) {
List<Session2Token> list = new ArrayList<>();
if (userId == ALL.getIdentifier()) {
int size = mUserRecords.size();
for (int i = 0; i < size; i++) {
list.addAll(mUserRecords.valueAt(i).mPriorityStack.getSession2Tokens(userId));
}
} else {
FullUserRecord user = getFullUserRecordLocked(userId);
list.addAll(user.mPriorityStack.getSession2Tokens(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 {
IRemoteSessionCallback cb =
mRemoteVolumeControllers.getBroadcastItem(i);
cb.onVolumeChanged(token, flags);
} catch (Exception e) {
Log.w(TAG, "Error sending volume change.", e);
}
}
mRemoteVolumeControllers.finishBroadcast();
}
}
void onSessionPlaybackStateChanged(MediaSessionRecordImpl record,
boolean shouldUpdatePriority) {
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.onPlaybackStateChanged(record, shouldUpdatePriority);
}
}
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 onUserStarting(@NonNull TargetUser user) {
if (DEBUG) Log.d(TAG, "onStartUser: " + user);
updateUser();
}
@Override
public void onUserSwitching(@Nullable TargetUser from, @NonNull TargetUser to) {
if (DEBUG) Log.d(TAG, "onSwitchUser: " + to);
updateUser();
}
@Override
public void onUserStopped(@NonNull TargetUser targetUser) {
int userId = targetUser.getUserIdentifier();
if (DEBUG) Log.d(TAG, "onCleanupUser: " + userId);
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user != null) {
if (user.mFullUserId == userId) {
user.destroySessionsForUserLocked(ALL.getIdentifier());
mUserRecords.remove(userId);
} else {
user.destroySessionsForUserLocked(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 onSessionDied(MediaSessionRecordImpl session) {
synchronized (mLock) {
destroySessionLocked(session);
}
}
private void updateUser() {
synchronized (mLock) {
UserManager manager = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
mFullUserIds.clear();
List<UserHandle> allUsers = manager.getUserHandles(/*excludeDying=*/false);
if (allUsers != null) {
for (UserHandle user : allUsers) {
UserHandle parent = manager.getProfileParent(user);
if (parent != null) {
mFullUserIds.put(user.getIdentifier(), parent.getIdentifier());
} else {
mFullUserIds.put(user.getIdentifier(), user.getIdentifier());
if (mUserRecords.get(user.getIdentifier()) == null) {
mUserRecords.put(user.getIdentifier(),
new FullUserRecord(user.getIdentifier()));
}
}
}
}
// 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);
}
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<MediaSession.Token>());
} 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(MediaSessionRecordImpl session) {
if (DEBUG) {
Log.d(TAG, "Destroying " + session);
}
if (session.isClosed()) {
Log.w(TAG, "Destroying already destroyed session. Ignoring.");
return;
}
FullUserRecord user = getFullUserRecordLocked(session.getUserId());
if (user != null && session instanceof MediaSessionRecord) {
final int uid = session.getUid();
final int sessionCount = user.mUidToSessionCount.get(uid, 0);
if (sessionCount <= 0) {
Log.w(TAG, "destroySessionLocked: sessionCount should be positive. "
+ "sessionCount=" + sessionCount);
} else {
user.mUidToSessionCount.put(uid, sessionCount - 1);
}
}
if (mGlobalPrioritySession == session) {
mGlobalPrioritySession = null;
if (session.isActive() && user != null) {
user.pushAddressedPlayerChangedLocked();
}
} else {
if (user != null) {
user.mPriorityStack.removeSession(session);
}
}
session.close();
mHandler.postSessionsChanged(session);
}
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");
}
void tempAllowlistTargetPkgIfPossible(int targetUid, String targetPackage,
int callingPid, int callingUid, String callingPackage, String reason) {
final long token = Binder.clearCallingIdentity();
try {
enforcePackageName(callingPackage, callingUid);
if (targetUid != callingUid) {
Log.d(TAG, "tempAllowlistTargetPkgIfPossible callingPackage:"
+ callingPackage + " targetPackage:" + targetPackage
+ " reason:" + reason);
boolean canAllowWhileInUse = mActivityManagerLocal
.canAllowWhileInUsePermissionInFgs(callingPid, callingUid, callingPackage);
boolean canStartFgs = canAllowWhileInUse
|| mActivityManagerLocal.canStartForegroundService(callingPid, callingUid,
callingPackage);
if (canAllowWhileInUse) {
mActivityManagerLocal.tempAllowWhileInUsePermissionInFgs(targetUid,
MediaSessionDeviceConfig
.getMediaSessionCallbackFgsWhileInUseTempAllowDurationMs());
}
if (canStartFgs) {
final Context userContext = mContext.createContextAsUser(
UserHandle.of(UserHandle.getUserId(targetUid)), /* flags= */ 0);
final PowerExemptionManager powerExemptionManager =
userContext.getSystemService(
PowerExemptionManager.class);
powerExemptionManager.addToTemporaryAllowList(targetPackage,
PowerExemptionManager.REASON_MEDIA_SESSION_CALLBACK, reason,
MediaSessionDeviceConfig.getMediaSessionCallbackFgsAllowlistDurationMs());
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
/**
* Checks a caller's authorization to register an IRemoteControlDisplay.
* Authorization is granted if one of the following is true:
* <ul>
* <li>the caller has android.Manifest.permission.MEDIA_CONTENT_CONTROL
* permission</li>
* <li>the caller's listener is one of the enabled notification listeners
* for the caller's user</li>
* </ul>
*/
private void enforceMediaPermissions(ComponentName compName, int pid, int uid,
int resolvedUserId) {
if (hasStatusBarServicePermission(pid, uid)) return;
// TODO: Refactor to use hasMediaControlPermission and hasEnabledNotificationListener
if (mContext
.checkPermission(android.Manifest.permission.MEDIA_CONTENT_CONTROL, pid, uid)
!= PackageManager.PERMISSION_GRANTED
&& !isEnabledNotificationListener(compName,
UserHandle.getUserHandleForUid(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);
}
}
private boolean hasMediaControlPermission(int pid, int uid) {
// 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, "uid(" + uid + ") hasn't granted MEDIA_CONTENT_CONTROL");
}
return false;
}
/**
* 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 userHandle The user handle 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, UserHandle userHandle,
int forUserId) {
if (userHandle.getIdentifier() != 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) {
return mNotificationManager.hasEnabledNotificationListener(compName.getPackageName(),
userHandle);
}
return false;
}
/*
* 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 createSessionInternal(int callerPid, int callerUid, int userId,
String callerPackageName, ISessionCallback cb, String tag, Bundle sessionInfo) {
synchronized (mLock) {
int policies = 0;
if (mCustomMediaSessionPolicyProvider != null) {
policies = mCustomMediaSessionPolicyProvider.getSessionPoliciesForApplication(
callerUid, callerPackageName);
}
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 int sessionCount = user.mUidToSessionCount.get(callerUid, 0);
if (sessionCount >= SESSION_CREATION_LIMIT_PER_UID
&& !hasMediaControlPermission(callerPid, callerUid)) {
throw new RuntimeException("Created too many sessions. count="
+ sessionCount + ")");
}
final MediaSessionRecord session;
try {
session = new MediaSessionRecord(callerPid, callerUid, userId,
callerPackageName, cb, tag, sessionInfo, this,
mRecordThread.getLooper(), policies);
} catch (RemoteException e) {
throw new RuntimeException("Media Session owner died prematurely.", e);
}
user.mUidToSessionCount.put(callerUid, sessionCount + 1);
user.mPriorityStack.addSession(session);
mHandler.postSessionsChanged(session);
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 pushSession1Changed(int userId) {
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null) {
Log.w(TAG, "pushSession1ChangedOnHandler failed. No user with id=" + userId);
return;
}
List<MediaSessionRecord> records = getActiveSessionsLocked(userId);
int size = records.size();
ArrayList<MediaSession.Token> 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 == ALL.getIdentifier() || record.userId == userId) {
try {
record.listener.onActiveSessionsChanged(tokens);
} catch (RemoteException e) {
Log.w(TAG, "Dead ActiveSessionsListener in pushSessionsChanged, removing",
e);
mSessionsListeners.remove(i);
}
}
}
}
}
void pushSession2Changed(int userId) {
synchronized (mLock) {
List<Session2Token> allSession2Tokens = getSession2TokensLocked(ALL.getIdentifier());
List<Session2Token> session2Tokens = getSession2TokensLocked(userId);
for (int i = mSession2TokensListenerRecords.size() - 1; i >= 0; i--) {
Session2TokensListenerRecord listenerRecord = mSession2TokensListenerRecords.get(i);
try {
if (listenerRecord.userId == ALL.getIdentifier()) {
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);
}
}
}
}
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();
MediaSessionRecordImpl record = user.mPriorityStack.getDefaultRemoteSession(userId);
if (record instanceof MediaSession2Record) {
// TODO(jaewan): Implement
return;
}
MediaSession.Token token = record == null
? null : ((MediaSessionRecord) record).getSessionToken();
for (int i = size - 1; i >= 0; i--) {
try {
IRemoteSessionCallback cb =
mRemoteVolumeControllers.getBroadcastItem(i);
cb.onSessionChanged(token);
} catch (Exception e) {
Log.w(TAG, "Error sending default remote volume.", e);
}
}
mRemoteVolumeControllers.finishBroadcast();
}
}
/**
* 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(MediaSessionRecordImpl record) {
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(record.getUserId());
MediaSessionRecordImpl 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.getUserHandleForUid(sessionToken.getUid()).getIdentifier());
if (user != null) {
return user.mPriorityStack.getMediaSessionRecord(sessionToken);
}
return null;
}
private void instantiateCustomDispatcher(String componentName) {
synchronized (mLock) {
mCustomMediaKeyDispatcher = null;
try {
if (componentName != null && !TextUtils.isEmpty(componentName)) {
Class customDispatcherClass = Class.forName(componentName);
Constructor constructor =
customDispatcherClass.getDeclaredConstructor(Context.class);
mCustomMediaKeyDispatcher =
(MediaKeyDispatcher) constructor.newInstance(mContext);
}
} catch (ClassNotFoundException | InstantiationException | InvocationTargetException
| IllegalAccessException | NoSuchMethodException e) {
mCustomMediaKeyDispatcher = null;
Log.w(TAG, "Encountered problem while using reflection", e);
}
}
}
private void instantiateCustomProvider(String componentName) {
synchronized (mLock) {
mCustomMediaSessionPolicyProvider = null;
try {
if (componentName != null && !TextUtils.isEmpty(componentName)) {
Class customProviderClass = Class.forName(componentName);
Constructor constructor =
customProviderClass.getDeclaredConstructor(Context.class);
mCustomMediaSessionPolicyProvider =
(MediaSessionPolicyProvider) constructor.newInstance(mContext);
}
} catch (ClassNotFoundException | InstantiationException | InvocationTargetException
| IllegalAccessException | NoSuchMethodException e) {
Log.w(TAG, "Encountered problem while using reflection", e);
}
}
}
/**
* Information about a full user and its corresponding managed profiles.
*
* <p>Since the full user runs together with its managed profiles, a user wouldn't differentiate
* them when they press a media/volume button. So keeping media sessions for them in one
* place makes more sense and increases the readability.</p>
* <p>The contents of this object is guarded by {@link #mLock}.
*/
final class FullUserRecord implements MediaSessionStack.OnMediaButtonSessionChangedListener {
private final int mFullUserId;
private final ContentResolver mContentResolver;
private final MediaSessionStack mPriorityStack;
private final HashMap<IBinder, OnMediaKeyEventDispatchedListenerRecord>
mOnMediaKeyEventDispatchedListeners = new HashMap<>();
private final HashMap<IBinder, OnMediaKeyEventSessionChangedListenerRecord>
mOnMediaKeyEventSessionChangedListeners = new HashMap<>();
private final SparseIntArray mUidToSessionCount = new SparseIntArray();
private MediaButtonReceiverHolder mLastMediaButtonReceiverHolder;
private IOnVolumeKeyLongPressListener mOnVolumeKeyLongPressListener;
private int mOnVolumeKeyLongPressListenerUid;
private IOnMediaKeyListener mOnMediaKeyListener;
private int mOnMediaKeyListenerUid;
FullUserRecord(int fullUserId) {
mFullUserId = fullUserId;
mContentResolver = mContext.createContextAsUser(UserHandle.of(mFullUserId), 0)
.getContentResolver();
mPriorityStack = new MediaSessionStack(mAudioPlayerStateMonitor, this);
// Restore the remembered media button receiver before the boot.
String mediaButtonReceiverInfo = Settings.Secure.getString(mContentResolver,
MEDIA_BUTTON_RECEIVER);
mLastMediaButtonReceiverHolder =
MediaButtonReceiverHolder.unflattenFromString(
mContext, mediaButtonReceiverInfo);
}
public void destroySessionsForUserLocked(int userId) {
List<MediaSessionRecord> sessions = mPriorityStack.getPriorityList(false, userId);
for (MediaSessionRecord session : sessions) {
destroySessionLocked(session);
}
}
public void addOnMediaKeyEventDispatchedListenerLocked(
IOnMediaKeyEventDispatchedListener listener, int uid) {
IBinder cbBinder = listener.asBinder();
OnMediaKeyEventDispatchedListenerRecord cr =
new OnMediaKeyEventDispatchedListenerRecord(listener, uid);
mOnMediaKeyEventDispatchedListeners.put(cbBinder, cr);
try {
cbBinder.linkToDeath(cr, 0);
} catch (RemoteException e) {
Log.w(TAG, "Failed to add listener", e);
mOnMediaKeyEventDispatchedListeners.remove(cbBinder);
}
}
public void removeOnMediaKeyEventDispatchedListenerLocked(
IOnMediaKeyEventDispatchedListener listener) {
IBinder cbBinder = listener.asBinder();
OnMediaKeyEventDispatchedListenerRecord cr =
mOnMediaKeyEventDispatchedListeners.remove(cbBinder);
cbBinder.unlinkToDeath(cr, 0);
}
public void addOnMediaKeyEventSessionChangedListenerLocked(
IOnMediaKeyEventSessionChangedListener listener, int uid) {
IBinder cbBinder = listener.asBinder();
OnMediaKeyEventSessionChangedListenerRecord cr =
new OnMediaKeyEventSessionChangedListenerRecord(listener, uid);
mOnMediaKeyEventSessionChangedListeners.put(cbBinder, cr);
try {
cbBinder.linkToDeath(cr, 0);
} catch (RemoteException e) {
Log.w(TAG, "Failed to add listener", e);
mOnMediaKeyEventSessionChangedListeners.remove(cbBinder);
}
}
public void removeOnMediaKeyEventSessionChangedListener(
IOnMediaKeyEventSessionChangedListener listener) {
IBinder cbBinder = listener.asBinder();
OnMediaKeyEventSessionChangedListenerRecord cr =
mOnMediaKeyEventSessionChangedListeners.remove(cbBinder);
cbBinder.unlinkToDeath(cr, 0);
}
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 + "OnMediaKeyEventDispatchedListener: added "
+ mOnMediaKeyEventDispatchedListeners.size() + " listener(s)");
for (OnMediaKeyEventDispatchedListenerRecord cr
: mOnMediaKeyEventDispatchedListeners.values()) {
pw.println(indent + " from " + getCallingPackageName(cr.uid));
}
pw.println(indent + "OnMediaKeyEventSessionChangedListener: added "
+ mOnMediaKeyEventSessionChangedListeners.size() + " listener(s)");
for (OnMediaKeyEventSessionChangedListenerRecord cr
: mOnMediaKeyEventSessionChangedListeners.values()) {
pw.println(indent + " from " + getCallingPackageName(cr.uid));
}
pw.println(indent + "Last MediaButtonReceiver: " + mLastMediaButtonReceiverHolder);
mPriorityStack.dump(pw, indent);
}
@Override
public void onMediaButtonSessionChanged(MediaSessionRecordImpl oldMediaButtonSession,
MediaSessionRecordImpl newMediaButtonSession) {
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Media button session is changed to " + newMediaButtonSession);
}
synchronized (mLock) {
if (oldMediaButtonSession != null) {
mHandler.postSessionsChanged(oldMediaButtonSession);
}
if (newMediaButtonSession != null) {
rememberMediaButtonReceiverLocked(newMediaButtonSession);
mHandler.postSessionsChanged(newMediaButtonSession);
}
pushAddressedPlayerChangedLocked();
}
}
// Remember media button receiver and keep it in the persistent storage.
public void rememberMediaButtonReceiverLocked(MediaSessionRecordImpl record) {
if (record instanceof MediaSession2Record) {
// TODO(jaewan): Implement
return;
}
MediaSessionRecord sessionRecord = (MediaSessionRecord) record;
mLastMediaButtonReceiverHolder = sessionRecord.getMediaButtonReceiver();
String mediaButtonReceiverInfo = (mLastMediaButtonReceiverHolder == null)
? "" : mLastMediaButtonReceiverHolder.flattenToString();
Settings.Secure.putString(mContentResolver,
MEDIA_BUTTON_RECEIVER,
mediaButtonReceiverInfo);
}
private void pushAddressedPlayerChangedLocked(
IOnMediaKeyEventSessionChangedListener callback) {
try {
MediaSessionRecordImpl mediaButtonSession = getMediaButtonSessionLocked();
if (mediaButtonSession != null) {
if (mediaButtonSession instanceof MediaSessionRecord) {
MediaSessionRecord session1 = (MediaSessionRecord) mediaButtonSession;
callback.onMediaKeyEventSessionChanged(session1.getPackageName(),
session1.getSessionToken());
} else {
// TODO(jaewan): Implement
}
} else if (mCurrentFullUserRecord.mLastMediaButtonReceiverHolder != null) {
String packageName = mLastMediaButtonReceiverHolder.getPackageName();
callback.onMediaKeyEventSessionChanged(packageName, null);
} else {
callback.onMediaKeyEventSessionChanged("", null);
}
} catch (RemoteException e) {
Log.w(TAG, "Failed to pushAddressedPlayerChangedLocked", e);
}
}
private void pushAddressedPlayerChangedLocked() {
for (OnMediaKeyEventSessionChangedListenerRecord cr
: mOnMediaKeyEventSessionChangedListeners.values()) {
pushAddressedPlayerChangedLocked(cr.callback);
}
}
private MediaSessionRecordImpl getMediaButtonSessionLocked() {
return isGlobalPriorityActiveLocked()
? mGlobalPrioritySession : mPriorityStack.getMediaButtonSession();
}
final class OnMediaKeyEventDispatchedListenerRecord implements IBinder.DeathRecipient {
public final IOnMediaKeyEventDispatchedListener callback;
public final int uid;
OnMediaKeyEventDispatchedListenerRecord(IOnMediaKeyEventDispatchedListener callback,
int uid) {
this.callback = callback;
this.uid = uid;
}
@Override
public void binderDied() {
synchronized (mLock) {
mOnMediaKeyEventDispatchedListeners.remove(callback.asBinder());
}
}
}
final class OnMediaKeyEventSessionChangedListenerRecord implements IBinder.DeathRecipient {
public final IOnMediaKeyEventSessionChangedListener callback;
public final int uid;
OnMediaKeyEventSessionChangedListenerRecord(
IOnMediaKeyEventSessionChangedListener callback, int uid) {
this.callback = callback;
this.uid = uid;
}
@Override
public void binderDied() {
synchronized (mLock) {
mOnMediaKeyEventSessionChangedListeners.remove(callback.asBinder());
}
}
}
}
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);
}
}
}
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 KeyEventHandler mMediaKeyEventHandler =
new KeyEventHandler(KeyEventHandler.KEY_TYPE_MEDIA);
private KeyEventHandler mVolumeKeyEventHandler =
new KeyEventHandler(KeyEventHandler.KEY_TYPE_VOLUME);
@Override
public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err,
String[] args, ShellCallback callback, ResultReceiver resultReceiver) {
(new MediaShellCommand()).exec(this, in, out, err, args, callback,
resultReceiver);
}
@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 = handleIncomingUser(pid, uid, userId, packageName);
if (cb == null) {
throw new IllegalArgumentException("Controller callback cannot be null");
}
MediaSessionRecord session = createSessionInternal(
pid, uid, resolvedUserId, packageName, cb, tag, sessionInfo);
if (session == null) {
throw new IllegalStateException("Failed to create a new session record");
}
ISession sessionBinder = session.getSessionBinder();
if (sessionBinder == null) {
throw new IllegalStateException("Invalid session record");
}
return sessionBinder;
} catch (Exception e) {
Log.w(TAG, "Exception in creating a new session", e);
throw e;
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public List<MediaSession.Token> 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<MediaSession.Token> tokens = new ArrayList<>();
synchronized (mLock) {
List<MediaSessionRecord> records = getActiveSessionsLocked(resolvedUserId);
for (MediaSessionRecord record : records) {
tokens.add(record.getSessionToken());
}
}
return tokens;
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public MediaSession.Token getMediaKeyEventSession() {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final int userId = UserHandle.getUserHandleForUid(uid).getIdentifier();
final long token = Binder.clearCallingIdentity();
try {
if (!hasMediaControlPermission(pid, uid)) {
throw new SecurityException("MEDIA_CONTENT_CONTROL permission is required to"
+ " get the media key event session");
}
MediaSessionRecordImpl record;
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null) {
Log.w(TAG, "No matching user record to get the media key event session"
+ ", userId=" + userId);
return null;
}
record = user.getMediaButtonSessionLocked();
}
if (record instanceof MediaSessionRecord) {
return ((MediaSessionRecord) record).getSessionToken();
}
//TODO: Handle media session 2 case
return null;
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public String getMediaKeyEventSessionPackageName() {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final int userId = UserHandle.getUserHandleForUid(uid).getIdentifier();
final long token = Binder.clearCallingIdentity();
try {
if (!hasMediaControlPermission(pid, uid)) {
throw new SecurityException("MEDIA_CONTENT_CONTROL permission is required to"
+ " get the media key event session package");
}
MediaSessionRecordImpl record;
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null) {
Log.w(TAG, "No matching user record to get the media key event session"
+ " package , userId=" + userId);
return "";
}
record = user.getMediaButtonSessionLocked();
if (record instanceof MediaSessionRecord) {
return record.getPackageName();
//TODO: Handle media session 2 case
} else if (user.mLastMediaButtonReceiverHolder != null) {
return user.mLastMediaButtonReceiverHolder.getPackageName();
}
}
return "";
} 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 = handleIncomingUser(pid, uid, userId, null);
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.
* <p>
* 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 came from the
* 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 hardware 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.
Log.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.
Log.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) {
dispatchMediaKeyEventLocked(packageName, pid, uid, asSystemService,
keyEvent, needWakeLock);
} else {
mMediaKeyEventHandler.handleMediaKeyEventLocked(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 sessionToken token for the session that the controller is pointing to
* @param keyEvent media key event
* @see #dispatchVolumeKeyEvent
*/
@Override
public boolean dispatchMediaKeyEventToSessionAsSystemService(String packageName,
KeyEvent keyEvent, MediaSession.Token sessionToken) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
synchronized (mLock) {
MediaSessionRecord record = getMediaSessionRecordLocked(sessionToken);
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "dispatchMediaKeyEventToSessionAsSystemService, pkg="
+ packageName + ", pid=" + pid + ", uid=" + uid + ", sessionToken="
+ sessionToken + ", event=" + keyEvent + ", session=" + record);
}
if (record == null) {
Log.w(TAG, "Failed to find session to dispatch key event.");
return false;
}
return record.sendMediaButton(packageName, pid, uid, true /* asSystemService */,
keyEvent, 0, null);
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void addOnMediaKeyEventDispatchedListener(
final IOnMediaKeyEventDispatchedListener listener) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final int userId = UserHandle.getUserHandleForUid(uid).getIdentifier();
final long token = Binder.clearCallingIdentity();
try {
if (!hasMediaControlPermission(pid, uid)) {
throw new SecurityException("MEDIA_CONTENT_CONTROL permission is required to"
+ " add MediaKeyEventDispatchedListener");
}
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null || user.mFullUserId != userId) {
Log.w(TAG, "Only the full user can add the listener"
+ ", userId=" + userId);
return;
}
user.addOnMediaKeyEventDispatchedListenerLocked(listener, uid);
Log.d(TAG, "The MediaKeyEventDispatchedListener (" + listener.asBinder()
+ ") is added by " + getCallingPackageName(uid));
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void removeOnMediaKeyEventDispatchedListener(
final IOnMediaKeyEventDispatchedListener listener) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final int userId = UserHandle.getUserHandleForUid(uid).getIdentifier();
final long token = Binder.clearCallingIdentity();
try {
if (!hasMediaControlPermission(pid, uid)) {
throw new SecurityException("MEDIA_CONTENT_CONTROL permission is required to"
+ " remove MediaKeyEventDispatchedListener");
}
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null || user.mFullUserId != userId) {
Log.w(TAG, "Only the full user can remove the listener"
+ ", userId=" + userId);
return;
}
user.removeOnMediaKeyEventDispatchedListenerLocked(listener);
Log.d(TAG, "The MediaKeyEventDispatchedListener (" + listener.asBinder()
+ ") is removed by " + getCallingPackageName(uid));
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void addOnMediaKeyEventSessionChangedListener(
final IOnMediaKeyEventSessionChangedListener listener) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final int userId = UserHandle.getUserHandleForUid(uid).getIdentifier();
final long token = Binder.clearCallingIdentity();
try {
if (!hasMediaControlPermission(pid, uid)) {
throw new SecurityException("MEDIA_CONTENT_CONTROL permission is required to"
+ " add MediaKeyEventSessionChangedListener");
}
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null || user.mFullUserId != userId) {
Log.w(TAG, "Only the full user can add the listener"
+ ", userId=" + userId);
return;
}
user.addOnMediaKeyEventSessionChangedListenerLocked(listener, uid);
Log.d(TAG, "The MediaKeyEventSessionChangedListener (" + listener.asBinder()
+ ") is added by " + getCallingPackageName(uid));
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void removeOnMediaKeyEventSessionChangedListener(
final IOnMediaKeyEventSessionChangedListener listener) {
final int pid = Binder.getCallingPid();
final int uid = Binder.getCallingUid();
final int userId = UserHandle.getUserHandleForUid(uid).getIdentifier();
final long token = Binder.clearCallingIdentity();
try {
if (!hasMediaControlPermission(pid, uid)) {
throw new SecurityException("MEDIA_CONTENT_CONTROL permission is required to"
+ " remove MediaKeyEventSessionChangedListener");
}
synchronized (mLock) {
FullUserRecord user = getFullUserRecordLocked(userId);
if (user == null || user.mFullUserId != userId) {
Log.w(TAG, "Only the full user can remove the listener"
+ ", userId=" + userId);
return;
}
user.removeOnMediaKeyEventSessionChangedListener(listener);
Log.d(TAG, "The MediaKeyEventSessionChangedListener (" + listener.asBinder()
+ ") is removed by " + getCallingPackageName(uid));
}
} 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.getUserHandleForUid(uid).getIdentifier();
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.getUserHandleForUid(uid).getIdentifier();
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);
}
}
/**
* Dispatches volume key events. This is called when the foreground activity didn't handle
* the incoming volume key event.
* <p>
* 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 and haptic feedback aren't needed when adjusting 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()) {
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.
mVolumeKeyEventHandler.handleVolumeKeyEventLocked(packageName, pid, uid,
asSystemService, keyEvent, opPackageName, stream, musicOnly);
}
}
} 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) {
// 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, musicOnly);
} else if (isMute) {
if (down && keyEvent.getRepeatCount() == 0) {
dispatchAdjustVolumeLocked(packageName, opPackageName, pid, uid,
asSystemService, stream, AudioManager.ADJUST_TOGGLE_MUTE, flags,
musicOnly);
}
}
}
}
/**
* 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, KeyEvent keyEvent, MediaSession.Token sessionToken) {
int pid = Binder.getCallingPid();
int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
synchronized (mLock) {
MediaSessionRecord record = getMediaSessionRecordLocked(sessionToken);
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "dispatchVolumeKeyEventToSessionAsSystemService, pkg="
+ packageName + ", opPkg=" + opPackageName + ", pid=" + pid
+ ", uid=" + uid + ", sessionToken=" + sessionToken + ", event="
+ keyEvent + ", session=" + record);
}
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;
}
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,
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,
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, false);
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void registerRemoteSessionCallback(IRemoteSessionCallback 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 unregisterRemoteSessionCallback(IRemoteSessionCallback 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 (!MediaServerUtils.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, "");
}
MediaSessionDeviceConfig.dump(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) {
final int uid = Binder.getCallingUid();
final int userId = UserHandle.getUserHandleForUid(uid).getIdentifier();
final long token = Binder.clearCallingIdentity();
try {
// Don't perform 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(controllerPid, controllerUid)
|| hasEnabledNotificationListener(
userId, controllerPackageName, controllerUid);
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public void setCustomMediaKeyDispatcher(String name) {
instantiateCustomDispatcher(name);
}
@Override
public void setCustomMediaSessionPolicyProvider(String name) {
instantiateCustomProvider(name);
}
@Override
public boolean hasCustomMediaKeyDispatcher(String componentName) {
return mCustomMediaKeyDispatcher == null ? false
: TextUtils.equals(componentName,
mCustomMediaKeyDispatcher.getClass().getName());
}
@Override
public boolean hasCustomMediaSessionPolicyProvider(String componentName) {
return mCustomMediaSessionPolicyProvider == null ? false
: TextUtils.equals(componentName,
mCustomMediaSessionPolicyProvider.getClass().getName());
}
@Override
public int getSessionPolicies(MediaSession.Token token) {
synchronized (mLock) {
MediaSessionRecord record = getMediaSessionRecordLocked(token);
if (record != null) {
return record.getSessionPolicies();
}
}
return 0;
}
@Override
public void setSessionPolicies(MediaSession.Token token, int policies) {
final long callingIdentityToken = Binder.clearCallingIdentity();
try {
synchronized (mLock) {
MediaSessionRecord record = getMediaSessionRecordLocked(token);
FullUserRecord user = getFullUserRecordLocked(record.getUserId());
if (record != null && user != null) {
record.setSessionPolicies(policies);
user.mPriorityStack.updateMediaButtonSessionBySessionPolicyChange(record);
}
}
} finally {
Binder.restoreCallingIdentity(callingIdentityToken);
}
}
// 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 = handleIncomingUser(pid, uid, userId, 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;
}
// Handles incoming user by checking whether the caller has permission to access the
// given user id's information or not. Permission is not necessary if the given user id is
// equal to the caller's user id, but if not, the caller needs to have the
// INTERACT_ACROSS_USERS_FULL permission. Otherwise, a security exception will be thrown.
// The return value will be the given user id, unless the given user id is
// UserHandle.CURRENT, which will return the ActivityManager.getCurrentUser() value instead.
private int handleIncomingUser(int pid, int uid, int userId, String packageName) {
int callingUserId = UserHandle.getUserHandleForUid(uid).getIdentifier();
if (userId == callingUserId) {
return userId;
}
boolean canInteractAcrossUsersFull = mContext.checkPermission(
INTERACT_ACROSS_USERS_FULL, pid, uid) == PackageManager.PERMISSION_GRANTED;
if (canInteractAcrossUsersFull) {
if (userId == CURRENT.getIdentifier()) {
return ActivityManager.getCurrentUser();
}
return userId;
}
throw new SecurityException("Permission denied while calling from " + packageName
+ " with user id: " + userId + "; Need to run as either the calling user id ("
+ callingUserId + "), or with " + INTERACT_ACROSS_USERS_FULL + " permission");
}
private boolean hasEnabledNotificationListener(int callingUserId,
String controllerPackageName, int controllerUid) {
int controllerUserId = UserHandle.getUserHandleForUid(controllerUid).getIdentifier();
if (callingUserId != controllerUserId) {
// Enabled notification listener only works within the same user.
return false;
}
if (mNotificationManager.hasEnabledNotificationListener(controllerPackageName,
UserHandle.getUserHandleForUid(controllerUid))) {
return true;
}
if (DEBUG) {
Log.d(TAG, controllerPackageName + " (uid=" + controllerUid
+ ") 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,
boolean musicOnly) {
MediaSessionRecordImpl session = isGlobalPriorityActiveLocked() ? mGlobalPrioritySession
: mCurrentFullUserRecord.mPriorityStack.getDefaultVolumeSession();
boolean preferSuggestedStream = false;
if (isValidLocalStreamType(suggestedStream)
&& AudioSystem.isStreamActive(suggestedStream, 0)) {
preferSuggestedStream = true;
}
if (session == null || preferSuggestedStream) {
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Adjusting suggestedStream=" + suggestedStream + " by " + direction
+ ". flags=" + flags + ", preferSuggestedStream="
+ preferSuggestedStream + ", session=" + session);
}
if (musicOnly && !AudioSystem.isStreamActive(AudioManager.STREAM_MUSIC, 0)) {
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Nothing is playing on the music stream. Skipping volume event,"
+ " flags=" + flags);
}
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;
final int callingPid;
if (asSystemService) {
callingOpPackageName = mContext.getOpPackageName();
callingUid = Process.myUid();
callingPid = Process.myPid();
} else {
callingOpPackageName = opPackageName;
callingUid = uid;
callingPid = pid;
}
try {
mAudioManager.adjustSuggestedStreamVolumeForUid(suggestedStream,
direction, flags, callingOpPackageName, callingUid, callingPid,
getContext().getApplicationInfo().targetSdkVersion);
} catch (SecurityException | IllegalArgumentException e) {
Log.e(TAG, "Cannot adjust volume: direction=" + direction
+ ", suggestedStream=" + suggestedStream + ", flags=" + flags
+ ", packageName=" + packageName + ", uid=" + uid
+ ", asSystemService=" + asSystemService, e);
}
}
});
} else {
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Adjusting " + session + " by " + direction + ". flags="
+ flags + ", suggestedStream=" + suggestedStream
+ ", preferSuggestedStream=" + preferSuggestedStream);
}
session.adjustVolume(packageName, opPackageName, pid, uid, asSystemService,
direction, flags, true);
}
}
private void dispatchMediaKeyEventLocked(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, boolean needWakeLock) {
if (mCurrentFullUserRecord.getMediaButtonSessionLocked()
instanceof MediaSession2Record) {
// TODO(jaewan): Make MediaSession2 to receive media key event
return;
}
MediaSessionRecord session = null;
MediaButtonReceiverHolder mediaButtonReceiverHolder = null;
if (mCustomMediaKeyDispatcher != null) {
MediaSession.Token token = mCustomMediaKeyDispatcher.getMediaSession(
keyEvent, uid, asSystemService);
if (token != null) {
session = getMediaSessionRecordLocked(token);
}
if (session == null) {
PendingIntent pi = mCustomMediaKeyDispatcher.getMediaButtonReceiver(keyEvent,
uid, asSystemService);
if (pi != null) {
mediaButtonReceiverHolder = MediaButtonReceiverHolder.create(mContext,
mCurrentFullUserRecord.mFullUserId, pi,
/* sessionPackageName= */ "");
}
}
}
if (session == null && mediaButtonReceiverHolder == null) {
session = (MediaSessionRecord) mCurrentFullUserRecord.getMediaButtonSessionLocked();
if (session == null) {
mediaButtonReceiverHolder =
mCurrentFullUserRecord.mLastMediaButtonReceiverHolder;
}
}
if (session != null) {
if (DEBUG_KEY_EVENT) {
Log.d(TAG, "Sending " + keyEvent + " to " + session);
}
if (needWakeLock) {
mKeyEventReceiver.acquireWakeLockLocked();
}
// 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);
try {
for (FullUserRecord.OnMediaKeyEventDispatchedListenerRecord cr
: mCurrentFullUserRecord.mOnMediaKeyEventDispatchedListeners.values()) {
cr.callback.onMediaKeyEventDispatched(
keyEvent, session.getPackageName(), session.getSessionToken());
}
} catch (RemoteException e) {
Log.w(TAG, "Failed to send callback", e);
}
} else if (mediaButtonReceiverHolder != null) {
if (needWakeLock) {
mKeyEventReceiver.acquireWakeLockLocked();
}
String callingPackageName =
(asSystemService) ? mContext.getPackageName() : packageName;
boolean sent = mediaButtonReceiverHolder.send(
mContext, keyEvent, callingPackageName,
needWakeLock ? mKeyEventReceiver.mLastTimeoutId : -1, mKeyEventReceiver,
mHandler,
MediaSessionDeviceConfig.getMediaButtonReceiverFgsAllowlistDurationMs());
if (sent) {
String pkgName = mediaButtonReceiverHolder.getPackageName();
for (FullUserRecord.OnMediaKeyEventDispatchedListenerRecord cr
: mCurrentFullUserRecord
.mOnMediaKeyEventDispatchedListeners.values()) {
try {
cr.callback.onMediaKeyEventDispatched(keyEvent, pkgName, null);
} catch (RemoteException e) {
Log.w(TAG, "Failed notify key event dispatch, uid=" + cr.uid, 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, CURRENT.getIdentifier()) != 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()) {
dispatchMediaKeyEventLocked(mPackageName, mPid, mUid, mAsSystemService,
mKeyEvent, mNeedWakeLock);
} else {
mMediaKeyEventHandler.handleMediaKeyEventLocked(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 acquireWakeLockLocked() {
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);
}
};
// A long press is determined by:
// 1) A KeyEvent.ACTION_DOWN KeyEvent and repeat count of 0, followed by
// 2) A KeyEvent.ACTION_DOWN KeyEvent with the same key code, a repeat count of 1, and
// FLAG_LONG_PRESS received within ViewConfiguration.getLongPressTimeout().
// A tap is determined by:
// 1) A KeyEvent.ACTION_DOWN KeyEvent followed by
// 2) A KeyEvent.ACTION_UP KeyEvent with the same key code.
class KeyEventHandler {
private static final int KEY_TYPE_MEDIA = 0;
private static final int KEY_TYPE_VOLUME = 1;
private KeyEvent mTrackingFirstDownKeyEvent;
private boolean mIsLongPressing;
private Runnable mLongPressTimeoutRunnable;
private int mMultiTapCount;
private Runnable mMultiTapTimeoutRunnable;
private int mMultiTapKeyCode;
private int mKeyType;
KeyEventHandler(int keyType) {
mKeyType = keyType;
}
void handleMediaKeyEventLocked(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, boolean needWakeLock) {
handleKeyEventLocked(packageName, pid, uid, asSystemService, keyEvent, needWakeLock,
null, 0, false);
}
void handleVolumeKeyEventLocked(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, String opPackageName, int stream,
boolean musicOnly) {
handleKeyEventLocked(packageName, pid, uid, asSystemService, keyEvent, false,
opPackageName, stream, musicOnly);
}
void handleKeyEventLocked(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, boolean needWakeLock,
String opPackageName, int stream, boolean musicOnly) {
if (keyEvent.isCanceled()) {
return;
}
int overriddenKeyEvents = 0;
if (mCustomMediaKeyDispatcher != null
&& mCustomMediaKeyDispatcher.getOverriddenKeyEvents() != null) {
overriddenKeyEvents = mCustomMediaKeyDispatcher.getOverriddenKeyEvents()
.get(keyEvent.getKeyCode());
}
cancelTrackingIfNeeded(packageName, pid, uid, asSystemService, keyEvent,
needWakeLock, opPackageName, stream, musicOnly, overriddenKeyEvents);
if (!needTracking(keyEvent, overriddenKeyEvents)) {
if (mKeyType == KEY_TYPE_VOLUME) {
dispatchVolumeKeyEventLocked(packageName, opPackageName, pid, uid,
asSystemService, keyEvent, stream, musicOnly);
} else {
dispatchMediaKeyEventLocked(packageName, pid, uid, asSystemService,
keyEvent, needWakeLock);
}
return;
}
if (isFirstDownKeyEvent(keyEvent)) {
mTrackingFirstDownKeyEvent = keyEvent;
mIsLongPressing = false;
return;
}
// Long press is always overridden here, otherwise the key event would have been
// already handled
if (isFirstLongPressKeyEvent(keyEvent)) {
mIsLongPressing = true;
}
if (mIsLongPressing) {
handleLongPressLocked(keyEvent, needWakeLock, overriddenKeyEvents);
return;
}
if (keyEvent.getAction() == KeyEvent.ACTION_UP) {
mTrackingFirstDownKeyEvent = null;
if (shouldTrackForMultipleTapsLocked(overriddenKeyEvents)) {
if (mMultiTapCount == 0) {
mMultiTapTimeoutRunnable = createSingleTapRunnable(packageName, pid,
uid, asSystemService, keyEvent, needWakeLock,
opPackageName, stream, musicOnly,
isSingleTapOverridden(overriddenKeyEvents));
if (isSingleTapOverridden(overriddenKeyEvents)
&& !isDoubleTapOverridden(overriddenKeyEvents)
&& !isTripleTapOverridden(overriddenKeyEvents)) {
mMultiTapTimeoutRunnable.run();
} else {
mHandler.postDelayed(mMultiTapTimeoutRunnable,
MULTI_TAP_TIMEOUT);
mMultiTapCount = 1;
mMultiTapKeyCode = keyEvent.getKeyCode();
}
} else if (mMultiTapCount == 1) {
mHandler.removeCallbacks(mMultiTapTimeoutRunnable);
mMultiTapTimeoutRunnable = createDoubleTapRunnable(packageName, pid,
uid, asSystemService, keyEvent, needWakeLock, opPackageName,
stream, musicOnly, isSingleTapOverridden(overriddenKeyEvents),
isDoubleTapOverridden(overriddenKeyEvents));
if (isTripleTapOverridden(overriddenKeyEvents)) {
mHandler.postDelayed(mMultiTapTimeoutRunnable, MULTI_TAP_TIMEOUT);
mMultiTapCount = 2;
} else {
mMultiTapTimeoutRunnable.run();
}
} else if (mMultiTapCount == 2) {
mHandler.removeCallbacks(mMultiTapTimeoutRunnable);
onTripleTap(keyEvent);
}
} else {
dispatchDownAndUpKeyEventsLocked(packageName, pid, uid, asSystemService,
keyEvent, needWakeLock, opPackageName, stream, musicOnly);
}
}
}
private boolean shouldTrackForMultipleTapsLocked(int overriddenKeyEvents) {
return isSingleTapOverridden(overriddenKeyEvents)
|| isDoubleTapOverridden(overriddenKeyEvents)
|| isTripleTapOverridden(overriddenKeyEvents);
}
private void cancelTrackingIfNeeded(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, boolean needWakeLock,
String opPackageName, int stream, boolean musicOnly, int overriddenKeyEvents) {
if (mTrackingFirstDownKeyEvent == null && mMultiTapTimeoutRunnable == null) {
return;
}
if (isFirstDownKeyEvent(keyEvent)) {
if (mLongPressTimeoutRunnable != null) {
mHandler.removeCallbacks(mLongPressTimeoutRunnable);
mLongPressTimeoutRunnable.run();
}
if (mMultiTapTimeoutRunnable != null
&& keyEvent.getKeyCode() != mMultiTapKeyCode) {
runExistingMultiTapRunnableLocked();
}
resetLongPressTracking();
return;
}
if (mTrackingFirstDownKeyEvent != null
&& mTrackingFirstDownKeyEvent.getDownTime() == keyEvent.getDownTime()
&& mTrackingFirstDownKeyEvent.getKeyCode() == keyEvent.getKeyCode()
&& keyEvent.getAction() == KeyEvent.ACTION_DOWN) {
if (isFirstLongPressKeyEvent(keyEvent)) {
if (mMultiTapTimeoutRunnable != null) {
runExistingMultiTapRunnableLocked();
}
if ((overriddenKeyEvents & KEY_EVENT_LONG_PRESS) == 0) {
if (mKeyType == KEY_TYPE_VOLUME) {
if (mCurrentFullUserRecord.mOnVolumeKeyLongPressListener == null) {
dispatchVolumeKeyEventLocked(packageName, opPackageName, pid,
uid, asSystemService, keyEvent, stream, musicOnly);
mTrackingFirstDownKeyEvent = null;
}
} else if (!isVoiceKey(keyEvent.getKeyCode())) {
dispatchMediaKeyEventLocked(packageName, pid, uid, asSystemService,
keyEvent, needWakeLock);
mTrackingFirstDownKeyEvent = null;
}
}
} else if (keyEvent.getRepeatCount() > 1 && !mIsLongPressing) {
resetLongPressTracking();
}
}
}
private boolean needTracking(KeyEvent keyEvent, int overriddenKeyEvents) {
if (!isFirstDownKeyEvent(keyEvent)) {
if (mTrackingFirstDownKeyEvent == null) {
return false;
} else if (mTrackingFirstDownKeyEvent.getDownTime() != keyEvent.getDownTime()
|| mTrackingFirstDownKeyEvent.getKeyCode() != keyEvent.getKeyCode()) {
return false;
}
}
if (overriddenKeyEvents == 0) {
if (mKeyType == KEY_TYPE_VOLUME) {
if (mCurrentFullUserRecord.mOnVolumeKeyLongPressListener == null) {
return false;
}
} else if (!isVoiceKey(keyEvent.getKeyCode())) {
return false;
}
}
return true;
}
private void runExistingMultiTapRunnableLocked() {
mHandler.removeCallbacks(mMultiTapTimeoutRunnable);
mMultiTapTimeoutRunnable.run();
}
private void resetMultiTapTrackingLocked() {
mMultiTapCount = 0;
mMultiTapTimeoutRunnable = null;
mMultiTapKeyCode = 0;
}
private void handleLongPressLocked(KeyEvent keyEvent, boolean needWakeLock,
int overriddenKeyEvents) {
if (mCustomMediaKeyDispatcher != null
&& isLongPressOverridden(overriddenKeyEvents)) {
mCustomMediaKeyDispatcher.onLongPress(keyEvent);
if (mLongPressTimeoutRunnable != null) {
mHandler.removeCallbacks(mLongPressTimeoutRunnable);
}
if (keyEvent.getAction() == KeyEvent.ACTION_DOWN) {
if (mLongPressTimeoutRunnable == null) {
mLongPressTimeoutRunnable = createLongPressTimeoutRunnable(keyEvent);
}
mHandler.postDelayed(mLongPressTimeoutRunnable, LONG_PRESS_TIMEOUT);
} else {
resetLongPressTracking();
}
} else {
if (mKeyType == KEY_TYPE_VOLUME) {
if (isFirstLongPressKeyEvent(keyEvent)) {
dispatchVolumeKeyLongPressLocked(mTrackingFirstDownKeyEvent);
}
dispatchVolumeKeyLongPressLocked(keyEvent);
} else if (isFirstLongPressKeyEvent(keyEvent)
&& isVoiceKey(keyEvent.getKeyCode())) {
// Default implementation
startVoiceInput(needWakeLock);
resetLongPressTracking();
}
}
}
private Runnable createLongPressTimeoutRunnable(KeyEvent keyEvent) {
return new Runnable() {
@Override
public void run() {
if (mCustomMediaKeyDispatcher != null) {
mCustomMediaKeyDispatcher.onLongPress(createCanceledKeyEvent(keyEvent));
}
resetLongPressTracking();
}
};
}
private void resetLongPressTracking() {
mTrackingFirstDownKeyEvent = null;
mIsLongPressing = false;
mLongPressTimeoutRunnable = null;
}
private KeyEvent createCanceledKeyEvent(KeyEvent keyEvent) {
KeyEvent upEvent = KeyEvent.changeAction(keyEvent, KeyEvent.ACTION_UP);
return KeyEvent.changeTimeRepeat(upEvent, System.currentTimeMillis(), 0,
KeyEvent.FLAG_CANCELED);
}
private boolean isFirstLongPressKeyEvent(KeyEvent keyEvent) {
return ((keyEvent.getFlags() & KeyEvent.FLAG_LONG_PRESS) != 0)
&& keyEvent.getRepeatCount() == 1;
}
private boolean isFirstDownKeyEvent(KeyEvent keyEvent) {
return keyEvent.getAction() == KeyEvent.ACTION_DOWN
&& keyEvent.getRepeatCount() == 0;
}
private void dispatchDownAndUpKeyEventsLocked(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, boolean needWakeLock,
String opPackageName, int stream, boolean musicOnly) {
KeyEvent downEvent = KeyEvent.changeAction(keyEvent, KeyEvent.ACTION_DOWN);
if (mKeyType == KEY_TYPE_VOLUME) {
dispatchVolumeKeyEventLocked(packageName, opPackageName, pid, uid,
asSystemService, downEvent, stream, musicOnly);
dispatchVolumeKeyEventLocked(packageName, opPackageName, pid, uid,
asSystemService, keyEvent, stream, musicOnly);
} else {
dispatchMediaKeyEventLocked(packageName, pid, uid, asSystemService, downEvent,
needWakeLock);
dispatchMediaKeyEventLocked(packageName, pid, uid, asSystemService, keyEvent,
needWakeLock);
}
}
Runnable createSingleTapRunnable(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, boolean needWakeLock,
String opPackageName, int stream, boolean musicOnly, boolean overridden) {
return new Runnable() {
@Override
public void run() {
resetMultiTapTrackingLocked();
if (overridden) {
mCustomMediaKeyDispatcher.onSingleTap(keyEvent);
} else {
dispatchDownAndUpKeyEventsLocked(packageName, pid, uid, asSystemService,
keyEvent, needWakeLock, opPackageName, stream, musicOnly);
}
}
};
};
Runnable createDoubleTapRunnable(String packageName, int pid, int uid,
boolean asSystemService, KeyEvent keyEvent, boolean needWakeLock,
String opPackageName, int stream, boolean musicOnly,
boolean singleTapOverridden, boolean doubleTapOverridden) {
return new Runnable() {
@Override
public void run() {
resetMultiTapTrackingLocked();
if (doubleTapOverridden) {
mCustomMediaKeyDispatcher.onDoubleTap(keyEvent);
} else if (singleTapOverridden) {
mCustomMediaKeyDispatcher.onSingleTap(keyEvent);
mCustomMediaKeyDispatcher.onSingleTap(keyEvent);
} else {
dispatchDownAndUpKeyEventsLocked(packageName, pid, uid, asSystemService,
keyEvent, needWakeLock, opPackageName, stream, musicOnly);
dispatchDownAndUpKeyEventsLocked(packageName, pid, uid, asSystemService,
keyEvent, needWakeLock, opPackageName, stream, musicOnly);
}
}
};
};
private void onTripleTap(KeyEvent keyEvent) {
resetMultiTapTrackingLocked();
mCustomMediaKeyDispatcher.onTripleTap(keyEvent);
}
}
}
final class MessageHandler extends Handler {
private static final int MSG_SESSIONS_1_CHANGED = 1;
private static final int MSG_SESSIONS_2_CHANGED = 2;
private final SparseArray<Integer> mIntegerCache = new SparseArray<>();
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_SESSIONS_1_CHANGED:
pushSession1Changed((int) msg.obj);
break;
case MSG_SESSIONS_2_CHANGED:
pushSession2Changed((int) msg.obj);
break;
}
}
public void postSessionsChanged(MediaSessionRecordImpl record) {
// Use object instead of the arguments when posting message to remove pending requests.
Integer userIdInteger = mIntegerCache.get(record.getUserId());
if (userIdInteger == null) {
userIdInteger = Integer.valueOf(record.getUserId());
mIntegerCache.put(record.getUserId(), userIdInteger);
}
int msg = (record instanceof MediaSessionRecord)
? MSG_SESSIONS_1_CHANGED : MSG_SESSIONS_2_CHANGED;
removeMessages(msg, userIdInteger);
obtainMessage(msg, userIdInteger).sendToTarget();
}
}
}