Move some system services to separate directories

Refactored the directory structure so that services can be optionally
excluded. This is step 1. Will be followed by another change that makes
it possible to remove services from the build.

Change-Id: Ideacedfd34b5e213217ad3ff4ebb21c4a8e73f85

1 files changed, 213 insertions, 0 deletions

diff --git a/services/core/java/com/android/server/display/DisplayDevice.java b/services/core/java/com/android/server/display/DisplayDevice.java
new file mode 100644
index 0000000..4161147
--- /dev/null
+++ b/services/core/java/com/android/server/display/DisplayDevice.java
@@ -0,0 +1,213 @@
+/*
+ * 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.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;
+
+    // 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 performTraversalInTransactionLocked.
+    private Surface mCurrentSurface;
+
+    public DisplayDevice(DisplayAdapter displayAdapter, IBinder displayToken) {
+        mDisplayAdapter = displayAdapter;
+        mDisplayToken = displayToken;
+    }
+
+    /**
+     * 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;
+    }
+
+    /**
+     * 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 performTraversalInTransactionLocked() {
+    }
+
+    /**
+     * Blanks the display, if supported.
+     */
+    public void blankLocked() {
+    }
+
+    /**
+     * Unblanks the display, if supported.
+     */
+    public void unblankLocked() {
+    }
+
+    /**
+     * Sets the display layer stack while in a transaction.
+     */
+    public final void setLayerStackInTransactionLocked(int layerStack) {
+        if (mCurrentLayerStack != layerStack) {
+            mCurrentLayerStack = layerStack;
+            SurfaceControl.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 setProjectionInTransactionLocked(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);
+
+            SurfaceControl.setDisplayProjection(mDisplayToken,
+                    orientation, layerStackRect, displayRect);
+        }
+    }
+
+    /**
+     * Sets the display surface while in a transaction.
+     */
+    public final void setSurfaceInTransactionLocked(Surface surface) {
+        if (mCurrentSurface != surface) {
+            mCurrentSurface = surface;
+            SurfaceControl.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;
+    }
+
+    /**
+     * 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("mDisplayToken=" + mDisplayToken);
+        pw.println("mCurrentLayerStack=" + mCurrentLayerStack);
+        pw.println("mCurrentOrientation=" + mCurrentOrientation);
+        pw.println("mCurrentLayerStackRect=" + mCurrentLayerStackRect);
+        pw.println("mCurrentDisplayRect=" + mCurrentDisplayRect);
+        pw.println("mCurrentSurface=" + mCurrentSurface);
+    }
+}