| /* |
| * 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 android.graphics.Rect; |
| import android.hardware.display.DisplayViewport; |
| import android.os.IBinder; |
| import android.view.Surface; |
| import android.view.SurfaceControl; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * Represents a physical display device such as the built-in display |
| * an external monitor, or a WiFi display. |
| * <p> |
| * Display devices are guarded by the {@link DisplayManagerService.SyncRoot} lock. |
| * </p> |
| */ |
| abstract class DisplayDevice { |
| private final DisplayAdapter mDisplayAdapter; |
| private final IBinder mDisplayToken; |
| private final String mUniqueId; |
| |
| // The display device does not manage these properties itself, they are set by |
| // the display manager service. The display device shouldn't really be looking at these. |
| private int mCurrentLayerStack = -1; |
| private int mCurrentOrientation = -1; |
| private Rect mCurrentLayerStackRect; |
| private Rect mCurrentDisplayRect; |
| |
| // The display device owns its surface, but it should only set it |
| // within a transaction from performTraversalLocked. |
| private Surface mCurrentSurface; |
| |
| // DEBUG STATE: Last device info which was written to the log, or null if none. |
| // Do not use for any other purpose. |
| DisplayDeviceInfo mDebugLastLoggedDeviceInfo; |
| |
| public DisplayDevice(DisplayAdapter displayAdapter, IBinder displayToken, String uniqueId) { |
| mDisplayAdapter = displayAdapter; |
| mDisplayToken = displayToken; |
| mUniqueId = uniqueId; |
| } |
| |
| /** |
| * Gets the display adapter that owns the display device. |
| * |
| * @return The display adapter. |
| */ |
| public final DisplayAdapter getAdapterLocked() { |
| return mDisplayAdapter; |
| } |
| |
| /** |
| * Gets the Surface Flinger display token for this display. |
| * |
| * @return The display token, or null if the display is not being managed |
| * by Surface Flinger. |
| */ |
| public final IBinder getDisplayTokenLocked() { |
| return mDisplayToken; |
| } |
| |
| /** |
| * Gets the name of the display device. |
| * |
| * @return The display device name. |
| */ |
| public final String getNameLocked() { |
| return getDisplayDeviceInfoLocked().name; |
| } |
| |
| /** |
| * Returns the unique id of the display device. |
| */ |
| public final String getUniqueId() { |
| return mUniqueId; |
| } |
| |
| /** |
| * Returns whether the unique id of the device is stable across reboots. |
| */ |
| public abstract boolean hasStableUniqueId(); |
| |
| /** |
| * Gets information about the display device. |
| * |
| * The information returned should not change between calls unless the display |
| * adapter sent a {@link DisplayAdapter#DISPLAY_DEVICE_EVENT_CHANGED} event and |
| * {@link #applyPendingDisplayDeviceInfoChangesLocked()} has been called to apply |
| * the pending changes. |
| * |
| * @return The display device info, which should be treated as immutable by the caller. |
| * The display device should allocate a new display device info object whenever |
| * the data changes. |
| */ |
| public abstract DisplayDeviceInfo getDisplayDeviceInfoLocked(); |
| |
| /** |
| * Applies any pending changes to the observable state of the display device |
| * if the display adapter sent a {@link DisplayAdapter#DISPLAY_DEVICE_EVENT_CHANGED} event. |
| */ |
| public void applyPendingDisplayDeviceInfoChangesLocked() { |
| } |
| |
| /** |
| * Gives the display device a chance to update its properties while in a transaction. |
| */ |
| public void performTraversalLocked(SurfaceControl.Transaction t) { |
| } |
| |
| /** |
| * Sets the display state, if supported. |
| * |
| * @param state The new display state. |
| * @param brightness The new display brightness. |
| * @return A runnable containing work to be deferred until after we have |
| * exited the critical section, or null if none. |
| */ |
| public Runnable requestDisplayStateLocked(int state, int brightness) { |
| return null; |
| } |
| |
| /** |
| * Sets the mode, if supported. |
| */ |
| public void requestDisplayModesLocked(int colorMode, int modeId) { |
| } |
| |
| public void onOverlayChangedLocked() { |
| } |
| |
| /** |
| * Sets the display layer stack while in a transaction. |
| */ |
| public final void setLayerStackLocked(SurfaceControl.Transaction t, int layerStack) { |
| if (mCurrentLayerStack != layerStack) { |
| mCurrentLayerStack = layerStack; |
| t.setDisplayLayerStack(mDisplayToken, layerStack); |
| } |
| } |
| |
| /** |
| * Sets the display projection while in a transaction. |
| * |
| * @param orientation defines the display's orientation |
| * @param layerStackRect defines which area of the window manager coordinate |
| * space will be used |
| * @param displayRect defines where on the display will layerStackRect be |
| * mapped to. displayRect is specified post-orientation, that is |
| * it uses the orientation seen by the end-user |
| */ |
| public final void setProjectionLocked(SurfaceControl.Transaction t, int orientation, |
| Rect layerStackRect, Rect displayRect) { |
| if (mCurrentOrientation != orientation |
| || mCurrentLayerStackRect == null |
| || !mCurrentLayerStackRect.equals(layerStackRect) |
| || mCurrentDisplayRect == null |
| || !mCurrentDisplayRect.equals(displayRect)) { |
| mCurrentOrientation = orientation; |
| |
| if (mCurrentLayerStackRect == null) { |
| mCurrentLayerStackRect = new Rect(); |
| } |
| mCurrentLayerStackRect.set(layerStackRect); |
| |
| if (mCurrentDisplayRect == null) { |
| mCurrentDisplayRect = new Rect(); |
| } |
| mCurrentDisplayRect.set(displayRect); |
| |
| t.setDisplayProjection(mDisplayToken, |
| orientation, layerStackRect, displayRect); |
| } |
| } |
| |
| /** |
| * Sets the display surface while in a transaction. |
| */ |
| public final void setSurfaceLocked(SurfaceControl.Transaction t, Surface surface) { |
| if (mCurrentSurface != surface) { |
| mCurrentSurface = surface; |
| t.setDisplaySurface(mDisplayToken, surface); |
| } |
| } |
| |
| /** |
| * Populates the specified viewport object with orientation, |
| * physical and logical rects based on the display's current projection. |
| */ |
| public final void populateViewportLocked(DisplayViewport viewport) { |
| viewport.orientation = mCurrentOrientation; |
| |
| if (mCurrentLayerStackRect != null) { |
| viewport.logicalFrame.set(mCurrentLayerStackRect); |
| } else { |
| viewport.logicalFrame.setEmpty(); |
| } |
| |
| if (mCurrentDisplayRect != null) { |
| viewport.physicalFrame.set(mCurrentDisplayRect); |
| } else { |
| viewport.physicalFrame.setEmpty(); |
| } |
| |
| boolean isRotated = (mCurrentOrientation == Surface.ROTATION_90 |
| || mCurrentOrientation == Surface.ROTATION_270); |
| DisplayDeviceInfo info = getDisplayDeviceInfoLocked(); |
| viewport.deviceWidth = isRotated ? info.height : info.width; |
| viewport.deviceHeight = isRotated ? info.width : info.height; |
| |
| viewport.uniqueId = info.uniqueId; |
| // TODO(b/112898898) Use an actual port here. |
| viewport.physicalPort = null; |
| } |
| |
| /** |
| * Dumps the local state of the display device. |
| * Does not need to dump the display device info because that is already dumped elsewhere. |
| */ |
| public void dumpLocked(PrintWriter pw) { |
| pw.println("mAdapter=" + mDisplayAdapter.getName()); |
| pw.println("mUniqueId=" + mUniqueId); |
| pw.println("mDisplayToken=" + mDisplayToken); |
| pw.println("mCurrentLayerStack=" + mCurrentLayerStack); |
| pw.println("mCurrentOrientation=" + mCurrentOrientation); |
| pw.println("mCurrentLayerStackRect=" + mCurrentLayerStackRect); |
| pw.println("mCurrentDisplayRect=" + mCurrentDisplayRect); |
| pw.println("mCurrentSurface=" + mCurrentSurface); |
| } |
| } |