Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.display; |
| 18 | |
| 19 | import com.android.internal.util.DumpUtils; |
| 20 | import com.android.internal.util.IndentingPrintWriter; |
| 21 | |
| 22 | import android.content.Context; |
Jeff Brown | e08ae38 | 2012-09-07 20:36:36 -0700 | [diff] [blame^] | 23 | import android.content.Intent; |
| 24 | import android.hardware.display.DisplayManager; |
| 25 | import android.hardware.display.WifiDisplay; |
| 26 | import android.hardware.display.WifiDisplayStatus; |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 27 | import android.media.RemoteDisplay; |
| 28 | import android.os.Handler; |
| 29 | import android.os.IBinder; |
| 30 | import android.util.Slog; |
| 31 | import android.view.Surface; |
| 32 | |
| 33 | import java.io.PrintWriter; |
Jeff Brown | e08ae38 | 2012-09-07 20:36:36 -0700 | [diff] [blame^] | 34 | import java.util.Arrays; |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 35 | |
| 36 | /** |
| 37 | * Connects to Wifi displays that implement the Miracast protocol. |
| 38 | * <p> |
| 39 | * The Wifi display protocol relies on Wifi direct for discovering and pairing |
| 40 | * with the display. Once connected, the Media Server opens an RTSP socket and accepts |
| 41 | * a connection from the display. After session negotiation, the Media Server |
| 42 | * streams encoded buffers to the display. |
| 43 | * </p><p> |
| 44 | * This class is responsible for connecting to Wifi displays and mediating |
| 45 | * the interactions between Media Server, Surface Flinger and the Display Manager Service. |
| 46 | * </p><p> |
| 47 | * Display adapters are guarded by the {@link DisplayManagerService.SyncRoot} lock. |
| 48 | * </p> |
| 49 | */ |
| 50 | final class WifiDisplayAdapter extends DisplayAdapter { |
| 51 | private static final String TAG = "WifiDisplayAdapter"; |
| 52 | |
| 53 | private WifiDisplayHandle mDisplayHandle; |
| 54 | private WifiDisplayController mDisplayController; |
| 55 | |
Jeff Brown | e08ae38 | 2012-09-07 20:36:36 -0700 | [diff] [blame^] | 56 | private WifiDisplayStatus mCurrentStatus; |
| 57 | private boolean mEnabled; |
| 58 | private WifiDisplay mConnectedDisplay; |
| 59 | private WifiDisplay[] mKnownDisplays = WifiDisplay.EMPTY_ARRAY; |
| 60 | private boolean mScanInProgress; |
| 61 | private boolean mConnectionInProgress; |
| 62 | |
| 63 | private boolean mPendingStatusChangeBroadcast; |
| 64 | |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 65 | public WifiDisplayAdapter(DisplayManagerService.SyncRoot syncRoot, |
| 66 | Context context, Handler handler, Listener listener) { |
| 67 | super(syncRoot, context, handler, listener, TAG); |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | public void dumpLocked(PrintWriter pw) { |
| 72 | super.dumpLocked(pw); |
| 73 | |
| 74 | if (mDisplayHandle == null) { |
| 75 | pw.println("mDisplayHandle=null"); |
| 76 | } else { |
| 77 | pw.println("mDisplayHandle:"); |
| 78 | mDisplayHandle.dumpLocked(pw); |
| 79 | } |
| 80 | |
Jeff Brown | e08ae38 | 2012-09-07 20:36:36 -0700 | [diff] [blame^] | 81 | pw.println("mCurrentStatus=" + getWifiDisplayStatusLocked()); |
| 82 | pw.println("mEnabled=" + mEnabled); |
| 83 | pw.println("mConnectedDisplay=" + mConnectedDisplay); |
| 84 | pw.println("mKnownDisplays=" + Arrays.toString(mKnownDisplays)); |
| 85 | pw.println("mScanInProgress=" + mScanInProgress); |
| 86 | pw.println("mConnectionInProgress=" + mConnectionInProgress); |
| 87 | pw.println("mPendingStatusChangeBroadcast=" + mPendingStatusChangeBroadcast); |
| 88 | |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 89 | // Try to dump the controller state. |
| 90 | if (mDisplayController == null) { |
| 91 | pw.println("mDisplayController=null"); |
| 92 | } else { |
| 93 | pw.println("mDisplayController:"); |
| 94 | final IndentingPrintWriter ipw = new IndentingPrintWriter(pw, " "); |
| 95 | ipw.increaseIndent(); |
| 96 | DumpUtils.dumpAsync(getHandler(), mDisplayController, ipw, 200); |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | @Override |
| 101 | public void registerLocked() { |
| 102 | super.registerLocked(); |
| 103 | |
| 104 | getHandler().post(new Runnable() { |
| 105 | @Override |
| 106 | public void run() { |
| 107 | mDisplayController = new WifiDisplayController( |
| 108 | getContext(), getHandler(), mWifiDisplayListener); |
| 109 | } |
| 110 | }); |
| 111 | } |
| 112 | |
Jeff Brown | e08ae38 | 2012-09-07 20:36:36 -0700 | [diff] [blame^] | 113 | public void requestScanLocked() { |
| 114 | getHandler().post(new Runnable() { |
| 115 | @Override |
| 116 | public void run() { |
| 117 | if (mDisplayController != null) { |
| 118 | mDisplayController.requestScan(); |
| 119 | } |
| 120 | } |
| 121 | }); |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 122 | } |
| 123 | |
Jeff Brown | e08ae38 | 2012-09-07 20:36:36 -0700 | [diff] [blame^] | 124 | public void requestConnectLocked(final String address) { |
| 125 | getHandler().post(new Runnable() { |
| 126 | @Override |
| 127 | public void run() { |
| 128 | if (mDisplayController != null) { |
| 129 | mDisplayController.requestConnect(address); |
| 130 | } |
| 131 | } |
| 132 | }); |
| 133 | } |
| 134 | |
| 135 | public void requestDisconnectLocked() { |
| 136 | getHandler().post(new Runnable() { |
| 137 | @Override |
| 138 | public void run() { |
| 139 | if (mDisplayController != null) { |
| 140 | mDisplayController.requestDisconnect(); |
| 141 | } |
| 142 | } |
| 143 | }); |
| 144 | } |
| 145 | |
| 146 | public WifiDisplayStatus getWifiDisplayStatusLocked() { |
| 147 | if (mCurrentStatus == null) { |
| 148 | mCurrentStatus = new WifiDisplayStatus(mEnabled, |
| 149 | mConnectedDisplay, mKnownDisplays, |
| 150 | mScanInProgress, mConnectionInProgress); |
| 151 | } |
| 152 | return mCurrentStatus; |
| 153 | } |
| 154 | |
| 155 | private void handleConnectLocked(WifiDisplay display, String iface) { |
| 156 | handleDisconnectLocked(); |
| 157 | |
| 158 | mDisplayHandle = new WifiDisplayHandle(display.getDeviceName(), iface); |
| 159 | } |
| 160 | |
| 161 | private void handleDisconnectLocked() { |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 162 | if (mDisplayHandle != null) { |
| 163 | mDisplayHandle.disposeLocked(); |
| 164 | mDisplayHandle = null; |
| 165 | } |
| 166 | } |
| 167 | |
Jeff Brown | e08ae38 | 2012-09-07 20:36:36 -0700 | [diff] [blame^] | 168 | private void scheduleStatusChangedBroadcastLocked() { |
| 169 | if (!mPendingStatusChangeBroadcast) { |
| 170 | mPendingStatusChangeBroadcast = true; |
| 171 | getHandler().post(mStatusChangeBroadcast); |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | private final Runnable mStatusChangeBroadcast = new Runnable() { |
| 176 | @Override |
| 177 | public void run() { |
| 178 | final Intent intent; |
| 179 | synchronized (getSyncRoot()) { |
| 180 | if (!mPendingStatusChangeBroadcast) { |
| 181 | return; |
| 182 | } |
| 183 | |
| 184 | mPendingStatusChangeBroadcast = false; |
| 185 | intent = new Intent(DisplayManager.ACTION_WIFI_DISPLAY_STATUS_CHANGED); |
| 186 | intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); |
| 187 | intent.putExtra(DisplayManager.EXTRA_WIFI_DISPLAY_STATUS, |
| 188 | getWifiDisplayStatusLocked()); |
| 189 | } |
| 190 | |
| 191 | // Send protected broadcast about wifi display status to receivers that |
| 192 | // have the required permission. |
| 193 | getContext().sendBroadcast(intent, |
| 194 | android.Manifest.permission.CONFIGURE_WIFI_DISPLAY); |
| 195 | } |
| 196 | }; |
| 197 | |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 198 | private final WifiDisplayController.Listener mWifiDisplayListener = |
| 199 | new WifiDisplayController.Listener() { |
| 200 | @Override |
Jeff Brown | e08ae38 | 2012-09-07 20:36:36 -0700 | [diff] [blame^] | 201 | public void onEnablementChanged(boolean enabled) { |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 202 | synchronized (getSyncRoot()) { |
Jeff Brown | e08ae38 | 2012-09-07 20:36:36 -0700 | [diff] [blame^] | 203 | if (mEnabled != enabled) { |
| 204 | mCurrentStatus = null; |
| 205 | mEnabled = enabled; |
| 206 | scheduleStatusChangedBroadcastLocked(); |
| 207 | } |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | @Override |
| 212 | public void onScanStarted() { |
| 213 | synchronized (getSyncRoot()) { |
| 214 | if (!mScanInProgress) { |
| 215 | mCurrentStatus = null; |
| 216 | mScanInProgress = true; |
| 217 | scheduleStatusChangedBroadcastLocked(); |
| 218 | } |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | public void onScanFinished(WifiDisplay[] knownDisplays) { |
| 223 | synchronized (getSyncRoot()) { |
| 224 | if (!Arrays.equals(mKnownDisplays, knownDisplays) || mScanInProgress) { |
| 225 | mCurrentStatus = null; |
| 226 | mKnownDisplays = knownDisplays; |
| 227 | mScanInProgress = false; |
| 228 | scheduleStatusChangedBroadcastLocked(); |
| 229 | } |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | @Override |
| 234 | public void onDisplayConnecting(WifiDisplay display) { |
| 235 | synchronized (getSyncRoot()) { |
| 236 | if (!mConnectionInProgress) { |
| 237 | mCurrentStatus = null; |
| 238 | mConnectionInProgress = true; |
| 239 | scheduleStatusChangedBroadcastLocked(); |
| 240 | } |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | @Override |
| 245 | public void onDisplayConnectionFailed() { |
| 246 | synchronized (getSyncRoot()) { |
| 247 | if (mConnectionInProgress) { |
| 248 | mCurrentStatus = null; |
| 249 | mConnectionInProgress = false; |
| 250 | scheduleStatusChangedBroadcastLocked(); |
| 251 | } |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | @Override |
| 256 | public void onDisplayConnected(WifiDisplay display, String iface) { |
| 257 | synchronized (getSyncRoot()) { |
| 258 | handleConnectLocked(display, iface); |
| 259 | |
| 260 | if (mConnectedDisplay == null || !mConnectedDisplay.equals(display) |
| 261 | || mConnectionInProgress) { |
| 262 | mCurrentStatus = null; |
| 263 | mConnectedDisplay = display; |
| 264 | mConnectionInProgress = false; |
| 265 | scheduleStatusChangedBroadcastLocked(); |
| 266 | } |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 267 | } |
| 268 | } |
| 269 | |
| 270 | @Override |
| 271 | public void onDisplayDisconnected() { |
| 272 | // Stop listening. |
| 273 | synchronized (getSyncRoot()) { |
Jeff Brown | e08ae38 | 2012-09-07 20:36:36 -0700 | [diff] [blame^] | 274 | handleDisconnectLocked(); |
| 275 | |
| 276 | if (mConnectedDisplay != null || mConnectionInProgress) { |
| 277 | mCurrentStatus = null; |
| 278 | mConnectedDisplay = null; |
| 279 | mConnectionInProgress = false; |
| 280 | scheduleStatusChangedBroadcastLocked(); |
| 281 | } |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 282 | } |
| 283 | } |
| 284 | }; |
| 285 | |
| 286 | private final class WifiDisplayDevice extends DisplayDevice { |
| 287 | private final String mName; |
| 288 | private final int mWidth; |
| 289 | private final int mHeight; |
| 290 | private final float mRefreshRate; |
| 291 | private final int mFlags; |
| 292 | |
| 293 | private Surface mSurface; |
| 294 | private DisplayDeviceInfo mInfo; |
| 295 | |
| 296 | public WifiDisplayDevice(IBinder displayToken, String name, |
| 297 | int width, int height, float refreshRate, int flags, |
| 298 | Surface surface) { |
| 299 | super(WifiDisplayAdapter.this, displayToken); |
| 300 | mName = name; |
| 301 | mWidth = width; |
| 302 | mHeight = height; |
| 303 | mRefreshRate = refreshRate; |
| 304 | mFlags = flags; |
| 305 | mSurface = surface; |
| 306 | } |
| 307 | |
| 308 | public void clearSurfaceLocked() { |
| 309 | mSurface = null; |
| 310 | sendTraversalRequestLocked(); |
| 311 | } |
| 312 | |
| 313 | @Override |
| 314 | public void performTraversalInTransactionLocked() { |
| 315 | setSurfaceInTransactionLocked(mSurface); |
| 316 | } |
| 317 | |
| 318 | @Override |
| 319 | public DisplayDeviceInfo getDisplayDeviceInfoLocked() { |
| 320 | if (mInfo == null) { |
| 321 | mInfo = new DisplayDeviceInfo(); |
| 322 | mInfo.name = mName; |
| 323 | mInfo.width = mWidth; |
| 324 | mInfo.height = mHeight; |
| 325 | mInfo.refreshRate = mRefreshRate; |
| 326 | mInfo.flags = mFlags; |
| 327 | mInfo.setAssumedDensityForExternalDisplay(mWidth, mHeight); |
| 328 | } |
| 329 | return mInfo; |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | private final class WifiDisplayHandle implements RemoteDisplay.Listener { |
| 334 | private final String mName; |
| 335 | private final String mIface; |
| 336 | private final RemoteDisplay mRemoteDisplay; |
| 337 | |
| 338 | private WifiDisplayDevice mDevice; |
| 339 | private int mLastError; |
| 340 | |
| 341 | public WifiDisplayHandle(String name, String iface) { |
| 342 | mName = name; |
| 343 | mIface = iface; |
| 344 | mRemoteDisplay = RemoteDisplay.listen(iface, this, getHandler()); |
| 345 | |
| 346 | Slog.i(TAG, "Listening for Wifi display connections on " + iface |
| 347 | + " from " + mName); |
| 348 | } |
| 349 | |
| 350 | public void disposeLocked() { |
| 351 | Slog.i(TAG, "Stopped listening for Wifi display connections on " + mIface |
| 352 | + " from " + mName); |
| 353 | |
| 354 | removeDisplayLocked(); |
| 355 | mRemoteDisplay.dispose(); |
| 356 | } |
| 357 | |
| 358 | public void dumpLocked(PrintWriter pw) { |
| 359 | pw.println(" " + mName + ": " + (mDevice != null ? "connected" : "disconnected")); |
| 360 | pw.println(" mIface=" + mIface); |
| 361 | pw.println(" mLastError=" + mLastError); |
| 362 | } |
| 363 | |
| 364 | // Called on the handler thread. |
| 365 | @Override |
| 366 | public void onDisplayConnected(Surface surface, int width, int height, int flags) { |
| 367 | synchronized (getSyncRoot()) { |
| 368 | mLastError = 0; |
| 369 | removeDisplayLocked(); |
| 370 | addDisplayLocked(surface, width, height, flags); |
| 371 | |
| 372 | Slog.i(TAG, "Wifi display connected: " + mName); |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | // Called on the handler thread. |
| 377 | @Override |
| 378 | public void onDisplayDisconnected() { |
| 379 | synchronized (getSyncRoot()) { |
| 380 | mLastError = 0; |
| 381 | removeDisplayLocked(); |
| 382 | |
| 383 | Slog.i(TAG, "Wifi display disconnected: " + mName); |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | // Called on the handler thread. |
| 388 | @Override |
| 389 | public void onDisplayError(int error) { |
| 390 | synchronized (getSyncRoot()) { |
| 391 | mLastError = error; |
| 392 | removeDisplayLocked(); |
| 393 | |
| 394 | Slog.i(TAG, "Wifi display disconnected due to error " + error + ": " + mName); |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | private void addDisplayLocked(Surface surface, int width, int height, int flags) { |
| 399 | int deviceFlags = 0; |
| 400 | if ((flags & RemoteDisplay.DISPLAY_FLAG_SECURE) != 0) { |
| 401 | deviceFlags |= DisplayDeviceInfo.FLAG_SECURE; |
| 402 | } |
| 403 | |
| 404 | float refreshRate = 60.0f; // TODO: get this for real |
| 405 | |
| 406 | IBinder displayToken = Surface.createDisplay(mName); |
| 407 | mDevice = new WifiDisplayDevice(displayToken, mName, width, height, |
| 408 | refreshRate, deviceFlags, surface); |
| 409 | sendDisplayDeviceEventLocked(mDevice, DISPLAY_DEVICE_EVENT_ADDED); |
| 410 | } |
| 411 | |
| 412 | private void removeDisplayLocked() { |
| 413 | if (mDevice != null) { |
| 414 | mDevice.clearSurfaceLocked(); |
| 415 | sendDisplayDeviceEventLocked(mDevice, DISPLAY_DEVICE_EVENT_REMOVED); |
| 416 | mDevice = null; |
| 417 | } |
| 418 | } |
| 419 | } |
| 420 | } |