| /* |
| * Copyright (C) 2012 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.display; |
| |
| import com.android.internal.util.DumpUtils; |
| import com.android.internal.util.IndentingPrintWriter; |
| |
| import android.content.Context; |
| import android.content.Intent; |
| import android.hardware.display.DisplayManager; |
| import android.hardware.display.WifiDisplay; |
| import android.hardware.display.WifiDisplayStatus; |
| import android.media.RemoteDisplay; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.util.Slog; |
| import android.view.Surface; |
| |
| import java.io.PrintWriter; |
| import java.util.Arrays; |
| |
| /** |
| * Connects to Wifi displays that implement the Miracast protocol. |
| * <p> |
| * The Wifi display protocol relies on Wifi direct for discovering and pairing |
| * with the display. Once connected, the Media Server opens an RTSP socket and accepts |
| * a connection from the display. After session negotiation, the Media Server |
| * streams encoded buffers to the display. |
| * </p><p> |
| * This class is responsible for connecting to Wifi displays and mediating |
| * the interactions between Media Server, Surface Flinger and the Display Manager Service. |
| * </p><p> |
| * Display adapters are guarded by the {@link DisplayManagerService.SyncRoot} lock. |
| * </p> |
| */ |
| final class WifiDisplayAdapter extends DisplayAdapter { |
| private static final String TAG = "WifiDisplayAdapter"; |
| |
| private WifiDisplayHandle mDisplayHandle; |
| private WifiDisplayController mDisplayController; |
| |
| private WifiDisplayStatus mCurrentStatus; |
| private boolean mEnabled; |
| private int mScanState; |
| private int mActiveDisplayState; |
| private WifiDisplay mActiveDisplay; |
| private WifiDisplay[] mKnownDisplays = WifiDisplay.EMPTY_ARRAY; |
| |
| private boolean mPendingStatusChangeBroadcast; |
| |
| public WifiDisplayAdapter(DisplayManagerService.SyncRoot syncRoot, |
| Context context, Handler handler, Listener listener) { |
| super(syncRoot, context, handler, listener, TAG); |
| } |
| |
| @Override |
| public void dumpLocked(PrintWriter pw) { |
| super.dumpLocked(pw); |
| |
| if (mDisplayHandle == null) { |
| pw.println("mDisplayHandle=null"); |
| } else { |
| pw.println("mDisplayHandle:"); |
| mDisplayHandle.dumpLocked(pw); |
| } |
| |
| pw.println("mCurrentStatus=" + getWifiDisplayStatusLocked()); |
| pw.println("mEnabled=" + mEnabled); |
| pw.println("mScanState=" + mScanState); |
| pw.println("mActiveDisplayState=" + mActiveDisplayState); |
| pw.println("mActiveDisplay=" + mActiveDisplay); |
| pw.println("mKnownDisplays=" + Arrays.toString(mKnownDisplays)); |
| pw.println("mPendingStatusChangeBroadcast=" + mPendingStatusChangeBroadcast); |
| |
| // Try to dump the controller state. |
| if (mDisplayController == null) { |
| pw.println("mDisplayController=null"); |
| } else { |
| pw.println("mDisplayController:"); |
| final IndentingPrintWriter ipw = new IndentingPrintWriter(pw, " "); |
| ipw.increaseIndent(); |
| DumpUtils.dumpAsync(getHandler(), mDisplayController, ipw, 200); |
| } |
| } |
| |
| @Override |
| public void registerLocked() { |
| super.registerLocked(); |
| |
| getHandler().post(new Runnable() { |
| @Override |
| public void run() { |
| mDisplayController = new WifiDisplayController( |
| getContext(), getHandler(), mWifiDisplayListener); |
| } |
| }); |
| } |
| |
| public void requestScanLocked() { |
| getHandler().post(new Runnable() { |
| @Override |
| public void run() { |
| if (mDisplayController != null) { |
| mDisplayController.requestScan(); |
| } |
| } |
| }); |
| } |
| |
| public void requestConnectLocked(final String address) { |
| getHandler().post(new Runnable() { |
| @Override |
| public void run() { |
| if (mDisplayController != null) { |
| mDisplayController.requestConnect(address); |
| } |
| } |
| }); |
| } |
| |
| public void requestDisconnectLocked() { |
| getHandler().post(new Runnable() { |
| @Override |
| public void run() { |
| if (mDisplayController != null) { |
| mDisplayController.requestDisconnect(); |
| } |
| } |
| }); |
| } |
| |
| public WifiDisplayStatus getWifiDisplayStatusLocked() { |
| if (mCurrentStatus == null) { |
| mCurrentStatus = new WifiDisplayStatus(mEnabled, mScanState, mActiveDisplayState, |
| mActiveDisplay, mKnownDisplays); |
| } |
| return mCurrentStatus; |
| } |
| |
| private void handleConnectLocked(WifiDisplay display, String iface) { |
| handleDisconnectLocked(); |
| |
| mDisplayHandle = new WifiDisplayHandle(display.getDeviceName(), iface); |
| } |
| |
| private void handleDisconnectLocked() { |
| if (mDisplayHandle != null) { |
| mDisplayHandle.disposeLocked(); |
| mDisplayHandle = null; |
| } |
| } |
| |
| private void scheduleStatusChangedBroadcastLocked() { |
| if (!mPendingStatusChangeBroadcast) { |
| mPendingStatusChangeBroadcast = true; |
| getHandler().post(mStatusChangeBroadcast); |
| } |
| } |
| |
| private final Runnable mStatusChangeBroadcast = new Runnable() { |
| @Override |
| public void run() { |
| final Intent intent; |
| synchronized (getSyncRoot()) { |
| if (!mPendingStatusChangeBroadcast) { |
| return; |
| } |
| |
| mPendingStatusChangeBroadcast = false; |
| intent = new Intent(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED); |
| intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); |
| intent.putExtra(DisplayManager.EXTRA_WIFI_DISPLAY_STATUS, |
| getWifiDisplayStatusLocked()); |
| } |
| |
| // Send protected broadcast about wifi display status to receivers that |
| // have the required permission. |
| getContext().sendBroadcast(intent, |
| android.Manifest.permission.CONFIGURE_WIFI_DISPLAY); |
| } |
| }; |
| |
| private final WifiDisplayController.Listener mWifiDisplayListener = |
| new WifiDisplayController.Listener() { |
| @Override |
| public void onEnablementChanged(boolean enabled) { |
| synchronized (getSyncRoot()) { |
| if (mEnabled != enabled) { |
| mCurrentStatus = null; |
| mEnabled = enabled; |
| scheduleStatusChangedBroadcastLocked(); |
| } |
| } |
| } |
| |
| @Override |
| public void onScanStarted() { |
| synchronized (getSyncRoot()) { |
| if (mScanState != WifiDisplayStatus.SCAN_STATE_SCANNING) { |
| mCurrentStatus = null; |
| mScanState = WifiDisplayStatus.SCAN_STATE_SCANNING; |
| scheduleStatusChangedBroadcastLocked(); |
| } |
| } |
| } |
| |
| public void onScanFinished(WifiDisplay[] knownDisplays) { |
| synchronized (getSyncRoot()) { |
| if (mScanState != WifiDisplayStatus.SCAN_STATE_NOT_SCANNING |
| || !Arrays.equals(mKnownDisplays, knownDisplays)) { |
| mCurrentStatus = null; |
| mScanState = WifiDisplayStatus.SCAN_STATE_NOT_SCANNING; |
| mKnownDisplays = knownDisplays; |
| scheduleStatusChangedBroadcastLocked(); |
| } |
| } |
| } |
| |
| @Override |
| public void onDisplayConnecting(WifiDisplay display) { |
| synchronized (getSyncRoot()) { |
| if (mActiveDisplayState != WifiDisplayStatus.DISPLAY_STATE_CONNECTING |
| || mActiveDisplay == null |
| || !mActiveDisplay.equals(display)) { |
| mCurrentStatus = null; |
| mActiveDisplayState = WifiDisplayStatus.DISPLAY_STATE_CONNECTING; |
| mActiveDisplay = display; |
| scheduleStatusChangedBroadcastLocked(); |
| } |
| } |
| } |
| |
| @Override |
| public void onDisplayConnectionFailed() { |
| synchronized (getSyncRoot()) { |
| if (mActiveDisplayState != WifiDisplayStatus.DISPLAY_STATE_NOT_CONNECTED |
| || mActiveDisplay != null) { |
| mCurrentStatus = null; |
| mActiveDisplayState = WifiDisplayStatus.DISPLAY_STATE_NOT_CONNECTED; |
| mActiveDisplay = null; |
| scheduleStatusChangedBroadcastLocked(); |
| } |
| } |
| } |
| |
| @Override |
| public void onDisplayConnected(WifiDisplay display, String iface) { |
| synchronized (getSyncRoot()) { |
| handleConnectLocked(display, iface); |
| |
| if (mActiveDisplayState != WifiDisplayStatus.DISPLAY_STATE_CONNECTED |
| || mActiveDisplay == null |
| || !mActiveDisplay.equals(display)) { |
| mCurrentStatus = null; |
| mActiveDisplayState = WifiDisplayStatus.DISPLAY_STATE_CONNECTED; |
| mActiveDisplay = display; |
| scheduleStatusChangedBroadcastLocked(); |
| } |
| } |
| } |
| |
| @Override |
| public void onDisplayDisconnected() { |
| // Stop listening. |
| synchronized (getSyncRoot()) { |
| handleDisconnectLocked(); |
| |
| if (mActiveDisplayState != WifiDisplayStatus.DISPLAY_STATE_NOT_CONNECTED |
| || mActiveDisplay != null) { |
| mCurrentStatus = null; |
| mActiveDisplayState = WifiDisplayStatus.DISPLAY_STATE_NOT_CONNECTED; |
| mActiveDisplay = null; |
| scheduleStatusChangedBroadcastLocked(); |
| } |
| } |
| } |
| }; |
| |
| private final class WifiDisplayDevice extends DisplayDevice { |
| private final String mName; |
| private final int mWidth; |
| private final int mHeight; |
| private final float mRefreshRate; |
| private final int mFlags; |
| |
| private Surface mSurface; |
| private DisplayDeviceInfo mInfo; |
| |
| public WifiDisplayDevice(IBinder displayToken, String name, |
| int width, int height, float refreshRate, int flags, |
| Surface surface) { |
| super(WifiDisplayAdapter.this, displayToken); |
| mName = name; |
| mWidth = width; |
| mHeight = height; |
| mRefreshRate = refreshRate; |
| mFlags = flags; |
| mSurface = surface; |
| } |
| |
| public void clearSurfaceLocked() { |
| mSurface = null; |
| sendTraversalRequestLocked(); |
| } |
| |
| @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 WifiDisplayHandle implements RemoteDisplay.Listener { |
| private final String mName; |
| private final String mIface; |
| private final RemoteDisplay mRemoteDisplay; |
| |
| private WifiDisplayDevice mDevice; |
| private int mLastError; |
| |
| public WifiDisplayHandle(String name, String iface) { |
| mName = name; |
| mIface = iface; |
| mRemoteDisplay = RemoteDisplay.listen(iface, this, getHandler()); |
| |
| Slog.i(TAG, "Listening for Wifi display connections on " + iface |
| + " from " + mName); |
| } |
| |
| public void disposeLocked() { |
| Slog.i(TAG, "Stopped listening for Wifi display connections on " + mIface |
| + " from " + mName); |
| |
| removeDisplayLocked(); |
| mRemoteDisplay.dispose(); |
| } |
| |
| public void dumpLocked(PrintWriter pw) { |
| pw.println(" " + mName + ": " + (mDevice != null ? "connected" : "disconnected")); |
| pw.println(" mIface=" + mIface); |
| pw.println(" mLastError=" + mLastError); |
| } |
| |
| // Called on the handler thread. |
| @Override |
| public void onDisplayConnected(Surface surface, int width, int height, int flags) { |
| synchronized (getSyncRoot()) { |
| mLastError = 0; |
| removeDisplayLocked(); |
| addDisplayLocked(surface, width, height, flags); |
| |
| Slog.i(TAG, "Wifi display connected: " + mName); |
| } |
| } |
| |
| // Called on the handler thread. |
| @Override |
| public void onDisplayDisconnected() { |
| synchronized (getSyncRoot()) { |
| mLastError = 0; |
| removeDisplayLocked(); |
| |
| Slog.i(TAG, "Wifi display disconnected: " + mName); |
| } |
| } |
| |
| // Called on the handler thread. |
| @Override |
| public void onDisplayError(int error) { |
| synchronized (getSyncRoot()) { |
| mLastError = error; |
| removeDisplayLocked(); |
| |
| Slog.i(TAG, "Wifi display disconnected due to error " + error + ": " + mName); |
| } |
| } |
| |
| private void addDisplayLocked(Surface surface, int width, int height, int flags) { |
| int deviceFlags = 0; |
| if ((flags & RemoteDisplay.DISPLAY_FLAG_SECURE) != 0) { |
| deviceFlags |= DisplayDeviceInfo.FLAG_SECURE; |
| } |
| |
| float refreshRate = 60.0f; // TODO: get this for real |
| |
| IBinder displayToken = Surface.createDisplay(mName); |
| mDevice = new WifiDisplayDevice(displayToken, mName, width, height, |
| refreshRate, deviceFlags, surface); |
| sendDisplayDeviceEventLocked(mDevice, DISPLAY_DEVICE_EVENT_ADDED); |
| } |
| |
| private void removeDisplayLocked() { |
| if (mDevice != null) { |
| mDevice.clearSurfaceLocked(); |
| sendDisplayDeviceEventLocked(mDevice, DISPLAY_DEVICE_EVENT_REMOVED); |
| mDevice = null; |
| } |
| } |
| } |
| } |