| /* |
| * 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 android.hardware.display; |
| |
| import android.content.Context; |
| import android.content.pm.ParceledListSlice; |
| import android.content.res.Resources; |
| import android.graphics.Point; |
| import android.hardware.display.DisplayManager.DisplayListener; |
| import android.media.projection.IMediaProjection; |
| import android.media.projection.MediaProjection; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.text.TextUtils; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.view.Display; |
| import android.view.DisplayAdjustments; |
| import android.view.DisplayInfo; |
| import android.view.Surface; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * Manager communication with the display manager service on behalf of |
| * an application process. You're probably looking for {@link DisplayManager}. |
| * |
| * @hide |
| */ |
| public final class DisplayManagerGlobal { |
| private static final String TAG = "DisplayManager"; |
| private static final boolean DEBUG = false; |
| |
| // True if display info and display ids should be cached. |
| // |
| // FIXME: The cache is currently disabled because it's unclear whether we have the |
| // necessary guarantees that the caches will always be flushed before clients |
| // attempt to observe their new state. For example, depending on the order |
| // in which the binder transactions take place, we might have a problem where |
| // an application could start processing a configuration change due to a display |
| // orientation change before the display info cache has actually been invalidated. |
| private static final boolean USE_CACHE = false; |
| |
| public static final int EVENT_DISPLAY_ADDED = 1; |
| public static final int EVENT_DISPLAY_CHANGED = 2; |
| public static final int EVENT_DISPLAY_REMOVED = 3; |
| |
| private static DisplayManagerGlobal sInstance; |
| |
| private final Object mLock = new Object(); |
| |
| private final IDisplayManager mDm; |
| |
| private DisplayManagerCallback mCallback; |
| private final ArrayList<DisplayListenerDelegate> mDisplayListeners = |
| new ArrayList<DisplayListenerDelegate>(); |
| |
| private final SparseArray<DisplayInfo> mDisplayInfoCache = new SparseArray<DisplayInfo>(); |
| private int[] mDisplayIdCache; |
| |
| private int mWifiDisplayScanNestCount; |
| |
| private DisplayManagerGlobal(IDisplayManager dm) { |
| mDm = dm; |
| } |
| |
| /** |
| * Gets an instance of the display manager global singleton. |
| * |
| * @return The display manager instance, may be null early in system startup |
| * before the display manager has been fully initialized. |
| */ |
| public static DisplayManagerGlobal getInstance() { |
| synchronized (DisplayManagerGlobal.class) { |
| if (sInstance == null) { |
| IBinder b = ServiceManager.getService(Context.DISPLAY_SERVICE); |
| if (b != null) { |
| sInstance = new DisplayManagerGlobal(IDisplayManager.Stub.asInterface(b)); |
| } |
| } |
| return sInstance; |
| } |
| } |
| |
| /** |
| * Get information about a particular logical display. |
| * |
| * @param displayId The logical display id. |
| * @return Information about the specified display, or null if it does not exist. |
| * This object belongs to an internal cache and should be treated as if it were immutable. |
| */ |
| public DisplayInfo getDisplayInfo(int displayId) { |
| try { |
| synchronized (mLock) { |
| DisplayInfo info; |
| if (USE_CACHE) { |
| info = mDisplayInfoCache.get(displayId); |
| if (info != null) { |
| return info; |
| } |
| } |
| |
| info = mDm.getDisplayInfo(displayId); |
| if (info == null) { |
| return null; |
| } |
| |
| if (USE_CACHE) { |
| mDisplayInfoCache.put(displayId, info); |
| } |
| registerCallbackIfNeededLocked(); |
| |
| if (DEBUG) { |
| Log.d(TAG, "getDisplayInfo: displayId=" + displayId + ", info=" + info); |
| } |
| return info; |
| } |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| /** |
| * Gets all currently valid logical display ids. |
| * |
| * @return An array containing all display ids. |
| */ |
| public int[] getDisplayIds() { |
| try { |
| synchronized (mLock) { |
| if (USE_CACHE) { |
| if (mDisplayIdCache != null) { |
| return mDisplayIdCache; |
| } |
| } |
| |
| int[] displayIds = mDm.getDisplayIds(); |
| if (USE_CACHE) { |
| mDisplayIdCache = displayIds; |
| } |
| registerCallbackIfNeededLocked(); |
| return displayIds; |
| } |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| /** |
| * Gets information about a logical display. |
| * |
| * The display metrics may be adjusted to provide compatibility |
| * for legacy applications or limited screen areas. |
| * |
| * @param displayId The logical display id. |
| * @param daj The compatibility info and activityToken. |
| * @return The display object, or null if there is no display with the given id. |
| */ |
| public Display getCompatibleDisplay(int displayId, DisplayAdjustments daj) { |
| DisplayInfo displayInfo = getDisplayInfo(displayId); |
| if (displayInfo == null) { |
| return null; |
| } |
| return new Display(this, displayId, displayInfo, daj); |
| } |
| |
| /** |
| * Gets information about a logical display. |
| * |
| * The display metrics may be adjusted to provide compatibility |
| * for legacy applications or limited screen areas. |
| * |
| * @param displayId The logical display id. |
| * @param resources Resources providing compatibility info. |
| * @return The display object, or null if there is no display with the given id. |
| */ |
| public Display getCompatibleDisplay(int displayId, Resources resources) { |
| DisplayInfo displayInfo = getDisplayInfo(displayId); |
| if (displayInfo == null) { |
| return null; |
| } |
| return new Display(this, displayId, displayInfo, resources); |
| } |
| |
| /** |
| * Gets information about a logical display without applying any compatibility metrics. |
| * |
| * @param displayId The logical display id. |
| * @return The display object, or null if there is no display with the given id. |
| */ |
| public Display getRealDisplay(int displayId) { |
| return getCompatibleDisplay(displayId, DisplayAdjustments.DEFAULT_DISPLAY_ADJUSTMENTS); |
| } |
| |
| public void registerDisplayListener(DisplayListener listener, Handler handler) { |
| if (listener == null) { |
| throw new IllegalArgumentException("listener must not be null"); |
| } |
| |
| synchronized (mLock) { |
| int index = findDisplayListenerLocked(listener); |
| if (index < 0) { |
| mDisplayListeners.add(new DisplayListenerDelegate(listener, handler)); |
| registerCallbackIfNeededLocked(); |
| } |
| } |
| } |
| |
| public void unregisterDisplayListener(DisplayListener listener) { |
| if (listener == null) { |
| throw new IllegalArgumentException("listener must not be null"); |
| } |
| |
| synchronized (mLock) { |
| int index = findDisplayListenerLocked(listener); |
| if (index >= 0) { |
| DisplayListenerDelegate d = mDisplayListeners.get(index); |
| d.clearEvents(); |
| mDisplayListeners.remove(index); |
| } |
| } |
| } |
| |
| private int findDisplayListenerLocked(DisplayListener listener) { |
| final int numListeners = mDisplayListeners.size(); |
| for (int i = 0; i < numListeners; i++) { |
| if (mDisplayListeners.get(i).mListener == listener) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| private void registerCallbackIfNeededLocked() { |
| if (mCallback == null) { |
| mCallback = new DisplayManagerCallback(); |
| try { |
| mDm.registerCallback(mCallback); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| } |
| |
| private void handleDisplayEvent(int displayId, int event) { |
| synchronized (mLock) { |
| if (USE_CACHE) { |
| mDisplayInfoCache.remove(displayId); |
| |
| if (event == EVENT_DISPLAY_ADDED || event == EVENT_DISPLAY_REMOVED) { |
| mDisplayIdCache = null; |
| } |
| } |
| |
| final int numListeners = mDisplayListeners.size(); |
| for (int i = 0; i < numListeners; i++) { |
| mDisplayListeners.get(i).sendDisplayEvent(displayId, event); |
| } |
| } |
| } |
| |
| public void startWifiDisplayScan() { |
| synchronized (mLock) { |
| if (mWifiDisplayScanNestCount++ == 0) { |
| registerCallbackIfNeededLocked(); |
| try { |
| mDm.startWifiDisplayScan(); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| } |
| } |
| |
| public void stopWifiDisplayScan() { |
| synchronized (mLock) { |
| if (--mWifiDisplayScanNestCount == 0) { |
| try { |
| mDm.stopWifiDisplayScan(); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } else if (mWifiDisplayScanNestCount < 0) { |
| Log.wtf(TAG, "Wifi display scan nest count became negative: " |
| + mWifiDisplayScanNestCount); |
| mWifiDisplayScanNestCount = 0; |
| } |
| } |
| } |
| |
| public void connectWifiDisplay(String deviceAddress) { |
| if (deviceAddress == null) { |
| throw new IllegalArgumentException("deviceAddress must not be null"); |
| } |
| |
| try { |
| mDm.connectWifiDisplay(deviceAddress); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| public void pauseWifiDisplay() { |
| try { |
| mDm.pauseWifiDisplay(); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| public void resumeWifiDisplay() { |
| try { |
| mDm.resumeWifiDisplay(); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| public void disconnectWifiDisplay() { |
| try { |
| mDm.disconnectWifiDisplay(); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| public void renameWifiDisplay(String deviceAddress, String alias) { |
| if (deviceAddress == null) { |
| throw new IllegalArgumentException("deviceAddress must not be null"); |
| } |
| |
| try { |
| mDm.renameWifiDisplay(deviceAddress, alias); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| public void forgetWifiDisplay(String deviceAddress) { |
| if (deviceAddress == null) { |
| throw new IllegalArgumentException("deviceAddress must not be null"); |
| } |
| |
| try { |
| mDm.forgetWifiDisplay(deviceAddress); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| public WifiDisplayStatus getWifiDisplayStatus() { |
| try { |
| return mDm.getWifiDisplayStatus(); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| public void requestColorMode(int displayId, int colorMode) { |
| try { |
| mDm.requestColorMode(displayId, colorMode); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| public VirtualDisplay createVirtualDisplay(Context context, MediaProjection projection, |
| String name, int width, int height, int densityDpi, Surface surface, int flags, |
| VirtualDisplay.Callback callback, Handler handler, String uniqueId) { |
| if (TextUtils.isEmpty(name)) { |
| throw new IllegalArgumentException("name must be non-null and non-empty"); |
| } |
| if (width <= 0 || height <= 0 || densityDpi <= 0) { |
| throw new IllegalArgumentException("width, height, and densityDpi must be " |
| + "greater than 0"); |
| } |
| |
| VirtualDisplayCallback callbackWrapper = new VirtualDisplayCallback(callback, handler); |
| IMediaProjection projectionToken = projection != null ? projection.getProjection() : null; |
| int displayId; |
| try { |
| displayId = mDm.createVirtualDisplay(callbackWrapper, projectionToken, |
| context.getPackageName(), name, width, height, densityDpi, surface, flags, |
| uniqueId); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| if (displayId < 0) { |
| Log.e(TAG, "Could not create virtual display: " + name); |
| return null; |
| } |
| Display display = getRealDisplay(displayId); |
| if (display == null) { |
| Log.wtf(TAG, "Could not obtain display info for newly created " |
| + "virtual display: " + name); |
| try { |
| mDm.releaseVirtualDisplay(callbackWrapper); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| return null; |
| } |
| return new VirtualDisplay(this, display, callbackWrapper, surface); |
| } |
| |
| public void setVirtualDisplaySurface(IVirtualDisplayCallback token, Surface surface) { |
| try { |
| mDm.setVirtualDisplaySurface(token, surface); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| public void resizeVirtualDisplay(IVirtualDisplayCallback token, |
| int width, int height, int densityDpi) { |
| try { |
| mDm.resizeVirtualDisplay(token, width, height, densityDpi); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| public void releaseVirtualDisplay(IVirtualDisplayCallback token) { |
| try { |
| mDm.releaseVirtualDisplay(token); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| /** |
| * Gets the stable device display size, in pixels. |
| */ |
| public Point getStableDisplaySize() { |
| try { |
| return mDm.getStableDisplaySize(); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| /** |
| * Retrieves brightness change events. |
| */ |
| public List<BrightnessChangeEvent> getBrightnessEvents(String callingPackage) { |
| try { |
| ParceledListSlice<BrightnessChangeEvent> events = |
| mDm.getBrightnessEvents(callingPackage); |
| if (events == null) { |
| return Collections.emptyList(); |
| } |
| return events.getList(); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| /** |
| * Set brightness but don't add a BrightnessChangeEvent |
| * STOPSHIP remove when adaptive brightness accepts curves. |
| */ |
| public void setBrightness(int brightness) { |
| try { |
| mDm.setBrightness(brightness); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| /** |
| * Sets the global brightness configuration for a given user. |
| * |
| * @hide |
| */ |
| public void setBrightnessConfigurationForUser(BrightnessConfiguration c, int userId) { |
| try { |
| mDm.setBrightnessConfigurationForUser(c, userId); |
| } catch (RemoteException ex) { |
| throw ex.rethrowFromSystemServer(); |
| } |
| } |
| |
| private final class DisplayManagerCallback extends IDisplayManagerCallback.Stub { |
| @Override |
| public void onDisplayEvent(int displayId, int event) { |
| if (DEBUG) { |
| Log.d(TAG, "onDisplayEvent: displayId=" + displayId + ", event=" + event); |
| } |
| handleDisplayEvent(displayId, event); |
| } |
| } |
| |
| private static final class DisplayListenerDelegate extends Handler { |
| public final DisplayListener mListener; |
| |
| public DisplayListenerDelegate(DisplayListener listener, Handler handler) { |
| super(handler != null ? handler.getLooper() : Looper.myLooper(), null, true /*async*/); |
| mListener = listener; |
| } |
| |
| public void sendDisplayEvent(int displayId, int event) { |
| Message msg = obtainMessage(event, displayId, 0); |
| sendMessage(msg); |
| } |
| |
| public void clearEvents() { |
| removeCallbacksAndMessages(null); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case EVENT_DISPLAY_ADDED: |
| mListener.onDisplayAdded(msg.arg1); |
| break; |
| case EVENT_DISPLAY_CHANGED: |
| mListener.onDisplayChanged(msg.arg1); |
| break; |
| case EVENT_DISPLAY_REMOVED: |
| mListener.onDisplayRemoved(msg.arg1); |
| break; |
| } |
| } |
| } |
| |
| private final static class VirtualDisplayCallback extends IVirtualDisplayCallback.Stub { |
| private VirtualDisplayCallbackDelegate mDelegate; |
| |
| public VirtualDisplayCallback(VirtualDisplay.Callback callback, Handler handler) { |
| if (callback != null) { |
| mDelegate = new VirtualDisplayCallbackDelegate(callback, handler); |
| } |
| } |
| |
| @Override // Binder call |
| public void onPaused() { |
| if (mDelegate != null) { |
| mDelegate.sendEmptyMessage(VirtualDisplayCallbackDelegate.MSG_DISPLAY_PAUSED); |
| } |
| } |
| |
| @Override // Binder call |
| public void onResumed() { |
| if (mDelegate != null) { |
| mDelegate.sendEmptyMessage(VirtualDisplayCallbackDelegate.MSG_DISPLAY_RESUMED); |
| } |
| } |
| |
| @Override // Binder call |
| public void onStopped() { |
| if (mDelegate != null) { |
| mDelegate.sendEmptyMessage(VirtualDisplayCallbackDelegate.MSG_DISPLAY_STOPPED); |
| } |
| } |
| } |
| |
| private final static class VirtualDisplayCallbackDelegate extends Handler { |
| public static final int MSG_DISPLAY_PAUSED = 0; |
| public static final int MSG_DISPLAY_RESUMED = 1; |
| public static final int MSG_DISPLAY_STOPPED = 2; |
| |
| private final VirtualDisplay.Callback mCallback; |
| |
| public VirtualDisplayCallbackDelegate(VirtualDisplay.Callback callback, |
| Handler handler) { |
| super(handler != null ? handler.getLooper() : Looper.myLooper(), null, true /*async*/); |
| mCallback = callback; |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_DISPLAY_PAUSED: |
| mCallback.onPaused(); |
| break; |
| case MSG_DISPLAY_RESUMED: |
| mCallback.onResumed(); |
| break; |
| case MSG_DISPLAY_STOPPED: |
| mCallback.onStopped(); |
| break; |
| } |
| } |
| } |
| } |