6669250034
The display manager must never call into the activity manager with its lock held. Make it clear that the adapters are constructed while holding the syncroot lock. Bug: 7377631 Change-Id: I1557313cbb31dcad9b5a46919a88a5a1c1af3e9b
583 lines
21 KiB
Java
583 lines
21 KiB
Java
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.display;
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import com.android.internal.R;
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import com.android.internal.util.DumpUtils;
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import com.android.internal.util.IndentingPrintWriter;
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import android.app.Notification;
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import android.app.NotificationManager;
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import android.app.PendingIntent;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.res.Resources;
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import android.hardware.display.DisplayManager;
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import android.hardware.display.WifiDisplay;
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import android.hardware.display.WifiDisplayStatus;
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import android.media.RemoteDisplay;
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import android.os.Handler;
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import android.os.IBinder;
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import android.os.Looper;
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import android.os.Message;
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import android.os.UserHandle;
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import android.provider.Settings;
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import android.util.Slog;
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import android.view.Surface;
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import java.io.PrintWriter;
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import java.util.Arrays;
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/**
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* Connects to Wifi displays that implement the Miracast protocol.
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* <p>
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* The Wifi display protocol relies on Wifi direct for discovering and pairing
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* with the display. Once connected, the Media Server opens an RTSP socket and accepts
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* a connection from the display. After session negotiation, the Media Server
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* streams encoded buffers to the display.
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* </p><p>
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* This class is responsible for connecting to Wifi displays and mediating
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* the interactions between Media Server, Surface Flinger and the Display Manager Service.
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* </p><p>
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* Display adapters are guarded by the {@link DisplayManagerService.SyncRoot} lock.
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* </p>
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*/
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final class WifiDisplayAdapter extends DisplayAdapter {
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private static final String TAG = "WifiDisplayAdapter";
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private static final boolean DEBUG = false;
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private static final int MSG_SEND_STATUS_CHANGE_BROADCAST = 1;
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private static final int MSG_UPDATE_NOTIFICATION = 2;
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private static final String ACTION_DISCONNECT = "android.server.display.wfd.DISCONNECT";
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private final WifiDisplayHandler mHandler;
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private final PersistentDataStore mPersistentDataStore;
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private final boolean mSupportsProtectedBuffers;
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private final NotificationManager mNotificationManager;
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private PendingIntent mSettingsPendingIntent;
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private PendingIntent mDisconnectPendingIntent;
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private WifiDisplayController mDisplayController;
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private WifiDisplayDevice mDisplayDevice;
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private WifiDisplayStatus mCurrentStatus;
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private int mFeatureState;
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private int mScanState;
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private int mActiveDisplayState;
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private WifiDisplay mActiveDisplay;
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private WifiDisplay[] mAvailableDisplays = WifiDisplay.EMPTY_ARRAY;
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private WifiDisplay[] mRememberedDisplays = WifiDisplay.EMPTY_ARRAY;
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private boolean mPendingStatusChangeBroadcast;
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private boolean mPendingNotificationUpdate;
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// Called with SyncRoot lock held.
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public WifiDisplayAdapter(DisplayManagerService.SyncRoot syncRoot,
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Context context, Handler handler, Listener listener,
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PersistentDataStore persistentDataStore) {
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super(syncRoot, context, handler, listener, TAG);
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mHandler = new WifiDisplayHandler(handler.getLooper());
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mPersistentDataStore = persistentDataStore;
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mSupportsProtectedBuffers = context.getResources().getBoolean(
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com.android.internal.R.bool.config_wifiDisplaySupportsProtectedBuffers);
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mNotificationManager = (NotificationManager)context.getSystemService(
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Context.NOTIFICATION_SERVICE);
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}
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@Override
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public void dumpLocked(PrintWriter pw) {
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super.dumpLocked(pw);
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pw.println("mCurrentStatus=" + getWifiDisplayStatusLocked());
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pw.println("mFeatureState=" + mFeatureState);
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pw.println("mScanState=" + mScanState);
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pw.println("mActiveDisplayState=" + mActiveDisplayState);
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pw.println("mActiveDisplay=" + mActiveDisplay);
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pw.println("mAvailableDisplays=" + Arrays.toString(mAvailableDisplays));
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pw.println("mRememberedDisplays=" + Arrays.toString(mRememberedDisplays));
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pw.println("mPendingStatusChangeBroadcast=" + mPendingStatusChangeBroadcast);
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pw.println("mPendingNotificationUpdate=" + mPendingNotificationUpdate);
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pw.println("mSupportsProtectedBuffers=" + mSupportsProtectedBuffers);
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// Try to dump the controller state.
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if (mDisplayController == null) {
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pw.println("mDisplayController=null");
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} else {
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pw.println("mDisplayController:");
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final IndentingPrintWriter ipw = new IndentingPrintWriter(pw, " ");
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ipw.increaseIndent();
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DumpUtils.dumpAsync(getHandler(), mDisplayController, ipw, 200);
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}
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}
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@Override
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public void registerLocked() {
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super.registerLocked();
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updateRememberedDisplaysLocked();
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getHandler().post(new Runnable() {
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@Override
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public void run() {
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mDisplayController = new WifiDisplayController(
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getContext(), getHandler(), mWifiDisplayListener);
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getContext().registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL,
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new IntentFilter(ACTION_DISCONNECT), null, mHandler);
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}
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});
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}
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public void requestScanLocked() {
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if (DEBUG) {
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Slog.d(TAG, "requestScanLocked");
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}
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getHandler().post(new Runnable() {
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@Override
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public void run() {
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if (mDisplayController != null) {
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mDisplayController.requestScan();
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}
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}
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});
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}
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public void requestConnectLocked(final String address, final boolean trusted) {
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if (DEBUG) {
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Slog.d(TAG, "requestConnectLocked: address=" + address + ", trusted=" + trusted);
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}
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if (!trusted) {
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synchronized (getSyncRoot()) {
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if (!isRememberedDisplayLocked(address)) {
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Slog.w(TAG, "Ignoring request by an untrusted client to connect to "
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+ "an unknown wifi display: " + address);
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return;
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}
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}
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}
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getHandler().post(new Runnable() {
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@Override
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public void run() {
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if (mDisplayController != null) {
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mDisplayController.requestConnect(address);
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}
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}
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});
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}
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private boolean isRememberedDisplayLocked(String address) {
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for (WifiDisplay display : mRememberedDisplays) {
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if (display.getDeviceAddress().equals(address)) {
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return true;
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}
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}
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return false;
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}
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public void requestDisconnectLocked() {
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if (DEBUG) {
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Slog.d(TAG, "requestDisconnectedLocked");
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}
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getHandler().post(new Runnable() {
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@Override
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public void run() {
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if (mDisplayController != null) {
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mDisplayController.requestDisconnect();
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}
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}
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});
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}
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public void requestRenameLocked(String address, String alias) {
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if (DEBUG) {
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Slog.d(TAG, "requestRenameLocked: address=" + address + ", alias=" + alias);
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}
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if (alias != null) {
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alias = alias.trim();
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if (alias.isEmpty() || alias.equals(address)) {
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alias = null;
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}
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}
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if (mPersistentDataStore.renameWifiDisplay(address, alias)) {
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mPersistentDataStore.saveIfNeeded();
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updateRememberedDisplaysLocked();
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scheduleStatusChangedBroadcastLocked();
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}
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if (mActiveDisplay != null && mActiveDisplay.getDeviceAddress().equals(address)
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&& mDisplayDevice != null) {
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mDisplayDevice.setNameLocked(mActiveDisplay.getFriendlyDisplayName());
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sendDisplayDeviceEventLocked(mDisplayDevice, DISPLAY_DEVICE_EVENT_CHANGED);
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}
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}
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public void requestForgetLocked(String address) {
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if (DEBUG) {
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Slog.d(TAG, "requestForgetLocked: address=" + address);
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}
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if (mPersistentDataStore.forgetWifiDisplay(address)) {
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mPersistentDataStore.saveIfNeeded();
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updateRememberedDisplaysLocked();
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scheduleStatusChangedBroadcastLocked();
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}
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if (mActiveDisplay != null && mActiveDisplay.getDeviceAddress().equals(address)) {
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requestDisconnectLocked();
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}
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}
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public WifiDisplayStatus getWifiDisplayStatusLocked() {
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if (mCurrentStatus == null) {
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mCurrentStatus = new WifiDisplayStatus(
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mFeatureState, mScanState, mActiveDisplayState,
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mActiveDisplay, mAvailableDisplays, mRememberedDisplays);
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}
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if (DEBUG) {
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Slog.d(TAG, "getWifiDisplayStatusLocked: result=" + mCurrentStatus);
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}
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return mCurrentStatus;
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}
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private void updateRememberedDisplaysLocked() {
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mRememberedDisplays = mPersistentDataStore.getRememberedWifiDisplays();
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mActiveDisplay = mPersistentDataStore.applyWifiDisplayAlias(mActiveDisplay);
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mAvailableDisplays = mPersistentDataStore.applyWifiDisplayAliases(mAvailableDisplays);
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}
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private void handleConnectLocked(WifiDisplay display,
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Surface surface, int width, int height, int flags) {
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handleDisconnectLocked();
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if (mPersistentDataStore.rememberWifiDisplay(display)) {
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mPersistentDataStore.saveIfNeeded();
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updateRememberedDisplaysLocked();
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scheduleStatusChangedBroadcastLocked();
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}
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int deviceFlags = 0;
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if ((flags & RemoteDisplay.DISPLAY_FLAG_SECURE) != 0) {
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deviceFlags |= DisplayDeviceInfo.FLAG_SECURE;
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}
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if (mSupportsProtectedBuffers) {
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deviceFlags |= DisplayDeviceInfo.FLAG_SUPPORTS_PROTECTED_BUFFERS;
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}
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float refreshRate = 60.0f; // TODO: get this for real
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String name = display.getFriendlyDisplayName();
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IBinder displayToken = Surface.createDisplay(name);
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mDisplayDevice = new WifiDisplayDevice(displayToken, name, width, height,
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refreshRate, deviceFlags, surface);
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sendDisplayDeviceEventLocked(mDisplayDevice, DISPLAY_DEVICE_EVENT_ADDED);
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scheduleUpdateNotificationLocked();
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}
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private void handleDisconnectLocked() {
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if (mDisplayDevice != null) {
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mDisplayDevice.clearSurfaceLocked();
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sendDisplayDeviceEventLocked(mDisplayDevice, DISPLAY_DEVICE_EVENT_REMOVED);
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mDisplayDevice = null;
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scheduleUpdateNotificationLocked();
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}
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}
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private void scheduleStatusChangedBroadcastLocked() {
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mCurrentStatus = null;
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if (!mPendingStatusChangeBroadcast) {
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mPendingStatusChangeBroadcast = true;
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mHandler.sendEmptyMessage(MSG_SEND_STATUS_CHANGE_BROADCAST);
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}
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}
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private void scheduleUpdateNotificationLocked() {
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if (!mPendingNotificationUpdate) {
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mPendingNotificationUpdate = true;
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mHandler.sendEmptyMessage(MSG_UPDATE_NOTIFICATION);
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}
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}
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// Runs on the handler.
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private void handleSendStatusChangeBroadcast() {
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final Intent intent;
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synchronized (getSyncRoot()) {
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if (!mPendingStatusChangeBroadcast) {
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return;
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}
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mPendingStatusChangeBroadcast = false;
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intent = new Intent(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED);
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intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
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intent.putExtra(DisplayManager.EXTRA_WIFI_DISPLAY_STATUS,
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getWifiDisplayStatusLocked());
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}
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// Send protected broadcast about wifi display status to registered receivers.
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getContext().sendBroadcastAsUser(intent, UserHandle.ALL);
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}
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// Runs on the handler.
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private void handleUpdateNotification() {
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final boolean isConnected;
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synchronized (getSyncRoot()) {
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if (!mPendingNotificationUpdate) {
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return;
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}
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mPendingNotificationUpdate = false;
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isConnected = (mDisplayDevice != null);
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}
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// Cancel the old notification if there is one.
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mNotificationManager.cancelAsUser(null,
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R.string.wifi_display_notification_title, UserHandle.ALL);
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if (isConnected) {
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Context context = getContext();
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// Initialize pending intents for the notification outside of the lock because
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// creating a pending intent requires a call into the activity manager.
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if (mSettingsPendingIntent == null) {
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Intent settingsIntent = new Intent(Settings.ACTION_WIFI_DISPLAY_SETTINGS);
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settingsIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
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| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
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| Intent.FLAG_ACTIVITY_CLEAR_TOP);
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mSettingsPendingIntent = PendingIntent.getActivityAsUser(
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context, 0, settingsIntent, 0, null, UserHandle.CURRENT);
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}
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if (mDisconnectPendingIntent == null) {
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Intent disconnectIntent = new Intent(ACTION_DISCONNECT);
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mDisconnectPendingIntent = PendingIntent.getBroadcastAsUser(
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context, 0, disconnectIntent, 0, UserHandle.CURRENT);
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}
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// Post the notification.
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Resources r = context.getResources();
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Notification notification = new Notification.Builder(context)
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.setContentTitle(r.getString(
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R.string.wifi_display_notification_title))
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.setContentText(r.getString(
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R.string.wifi_display_notification_message))
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.setContentIntent(mSettingsPendingIntent)
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.setSmallIcon(R.drawable.ic_notify_wifidisplay)
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.setOngoing(true)
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.addAction(android.R.drawable.ic_menu_close_clear_cancel,
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r.getString(R.string.wifi_display_notification_disconnect),
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mDisconnectPendingIntent)
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.build();
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mNotificationManager.notifyAsUser(null,
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R.string.wifi_display_notification_title,
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notification, UserHandle.ALL);
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}
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}
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private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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if (intent.getAction().equals(ACTION_DISCONNECT)) {
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synchronized (getSyncRoot()) {
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requestDisconnectLocked();
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}
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}
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}
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};
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private final WifiDisplayController.Listener mWifiDisplayListener =
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new WifiDisplayController.Listener() {
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@Override
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public void onFeatureStateChanged(int featureState) {
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synchronized (getSyncRoot()) {
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if (mFeatureState != featureState) {
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mFeatureState = featureState;
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scheduleStatusChangedBroadcastLocked();
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}
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}
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}
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@Override
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public void onScanStarted() {
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synchronized (getSyncRoot()) {
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if (mScanState != WifiDisplayStatus.SCAN_STATE_SCANNING) {
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mScanState = WifiDisplayStatus.SCAN_STATE_SCANNING;
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scheduleStatusChangedBroadcastLocked();
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}
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}
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}
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@Override
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public void onScanFinished(WifiDisplay[] availableDisplays) {
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synchronized (getSyncRoot()) {
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availableDisplays = mPersistentDataStore.applyWifiDisplayAliases(
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availableDisplays);
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if (mScanState != WifiDisplayStatus.SCAN_STATE_NOT_SCANNING
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|| !Arrays.equals(mAvailableDisplays, availableDisplays)) {
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mScanState = WifiDisplayStatus.SCAN_STATE_NOT_SCANNING;
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mAvailableDisplays = availableDisplays;
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scheduleStatusChangedBroadcastLocked();
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}
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}
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}
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@Override
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public void onDisplayConnecting(WifiDisplay display) {
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synchronized (getSyncRoot()) {
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display = mPersistentDataStore.applyWifiDisplayAlias(display);
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if (mActiveDisplayState != WifiDisplayStatus.DISPLAY_STATE_CONNECTING
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|| mActiveDisplay == null
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|| !mActiveDisplay.equals(display)) {
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mActiveDisplayState = WifiDisplayStatus.DISPLAY_STATE_CONNECTING;
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mActiveDisplay = display;
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scheduleStatusChangedBroadcastLocked();
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}
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}
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}
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@Override
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public void onDisplayConnectionFailed() {
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synchronized (getSyncRoot()) {
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if (mActiveDisplayState != WifiDisplayStatus.DISPLAY_STATE_NOT_CONNECTED
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|| mActiveDisplay != null) {
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mActiveDisplayState = WifiDisplayStatus.DISPLAY_STATE_NOT_CONNECTED;
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mActiveDisplay = null;
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scheduleStatusChangedBroadcastLocked();
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}
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}
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}
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@Override
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public void onDisplayConnected(WifiDisplay display, Surface surface,
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int width, int height, int flags) {
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synchronized (getSyncRoot()) {
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display = mPersistentDataStore.applyWifiDisplayAlias(display);
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handleConnectLocked(display, surface, width, height, flags);
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if (mActiveDisplayState != WifiDisplayStatus.DISPLAY_STATE_CONNECTED
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|| mActiveDisplay == null
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|| !mActiveDisplay.equals(display)) {
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mActiveDisplayState = WifiDisplayStatus.DISPLAY_STATE_CONNECTED;
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mActiveDisplay = display;
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scheduleStatusChangedBroadcastLocked();
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}
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}
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}
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@Override
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public void onDisplayDisconnected() {
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// Stop listening.
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synchronized (getSyncRoot()) {
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handleDisconnectLocked();
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if (mActiveDisplayState != WifiDisplayStatus.DISPLAY_STATE_NOT_CONNECTED
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|| mActiveDisplay != null) {
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mActiveDisplayState = WifiDisplayStatus.DISPLAY_STATE_NOT_CONNECTED;
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mActiveDisplay = null;
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scheduleStatusChangedBroadcastLocked();
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}
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}
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}
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};
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private final class WifiDisplayDevice extends DisplayDevice {
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private String mName;
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private final int mWidth;
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private final int mHeight;
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private final float mRefreshRate;
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private final int mFlags;
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private Surface mSurface;
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private DisplayDeviceInfo mInfo;
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public WifiDisplayDevice(IBinder displayToken, String name,
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int width, int height, float refreshRate, int flags,
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Surface surface) {
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super(WifiDisplayAdapter.this, displayToken);
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mName = name;
|
|
mWidth = width;
|
|
mHeight = height;
|
|
mRefreshRate = refreshRate;
|
|
mFlags = flags;
|
|
mSurface = surface;
|
|
}
|
|
|
|
public void clearSurfaceLocked() {
|
|
mSurface = null;
|
|
sendTraversalRequestLocked();
|
|
}
|
|
|
|
public void setNameLocked(String name) {
|
|
mName = name;
|
|
mInfo = null;
|
|
}
|
|
|
|
@Override
|
|
public void performTraversalInTransactionLocked() {
|
|
setSurfaceInTransactionLocked(mSurface);
|
|
}
|
|
|
|
@Override
|
|
public DisplayDeviceInfo getDisplayDeviceInfoLocked() {
|
|
if (mInfo == null) {
|
|
mInfo = new DisplayDeviceInfo();
|
|
mInfo.name = mName;
|
|
mInfo.width = mWidth;
|
|
mInfo.height = mHeight;
|
|
mInfo.refreshRate = mRefreshRate;
|
|
mInfo.flags = mFlags;
|
|
mInfo.touch = DisplayDeviceInfo.TOUCH_EXTERNAL;
|
|
mInfo.setAssumedDensityForExternalDisplay(mWidth, mHeight);
|
|
}
|
|
return mInfo;
|
|
}
|
|
}
|
|
|
|
private final class WifiDisplayHandler extends Handler {
|
|
public WifiDisplayHandler(Looper looper) {
|
|
super(looper, null, true /*async*/);
|
|
}
|
|
|
|
@Override
|
|
public void handleMessage(Message msg) {
|
|
switch (msg.what) {
|
|
case MSG_SEND_STATUS_CHANGE_BROADCAST:
|
|
handleSendStatusChangeBroadcast();
|
|
break;
|
|
|
|
case MSG_UPDATE_NOTIFICATION:
|
|
handleUpdateNotification();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|