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/*
* 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.content.Context;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.SystemProperties;
import android.util.SparseArray;
import android.view.DisplayEventReceiver;
import android.view.Surface;
import android.view.Surface.PhysicalDisplayInfo;
import java.io.PrintWriter;
/**
* A display adapter for the local displays managed by Surface Flinger.
* <p>
* Display adapters are guarded by the {@link DisplayManagerService.SyncRoot} lock.
* </p>
*/
final class LocalDisplayAdapter extends DisplayAdapter {
private static final String TAG = "LocalDisplayAdapter";
private static final int[] BUILT_IN_DISPLAY_IDS_TO_SCAN = new int[] {
Surface.BUILT_IN_DISPLAY_ID_MAIN,
Surface.BUILT_IN_DISPLAY_ID_HDMI,
};
private final SparseArray<LocalDisplayDevice> mDevices =
new SparseArray<LocalDisplayDevice>();
private final HotplugDisplayEventReceiver mHotplugReceiver;
private final PhysicalDisplayInfo mTempPhys = new PhysicalDisplayInfo();
public LocalDisplayAdapter(DisplayManagerService.SyncRoot syncRoot,
Context context, Handler handler, Listener listener) {
super(syncRoot, context, handler, listener, TAG);
mHotplugReceiver = new HotplugDisplayEventReceiver(handler.getLooper());
}
@Override
public void registerLocked() {
// TODO: listen for notifications from Surface Flinger about
// built-in displays being added or removed and rescan as needed.
super.registerLocked();
scanDisplaysLocked();
}
private void scanDisplaysLocked() {
for (int builtInDisplayId : BUILT_IN_DISPLAY_IDS_TO_SCAN) {
IBinder displayToken = Surface.getBuiltInDisplay(builtInDisplayId);
if (displayToken != null && Surface.getDisplayInfo(displayToken, mTempPhys)) {
LocalDisplayDevice device = mDevices.get(builtInDisplayId);
if (device == null) {
// Display was added.
device = new LocalDisplayDevice(displayToken, builtInDisplayId, mTempPhys);
mDevices.put(builtInDisplayId, device);
sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_ADDED);
} else if (device.updatePhysicalDisplayInfoLocked(mTempPhys)) {
// Display properties changed.
sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_CHANGED);
}
} else {
LocalDisplayDevice device = mDevices.get(builtInDisplayId);
if (device != null) {
// Display was removed.
mDevices.remove(builtInDisplayId);
sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_REMOVED);
}
}
}
}
private final class LocalDisplayDevice extends DisplayDevice {
private final int mBuiltInDisplayId;
private final PhysicalDisplayInfo mPhys;
private DisplayDeviceInfo mInfo;
private boolean mHavePendingChanges;
private boolean mBlanked;
public LocalDisplayDevice(IBinder displayToken, int builtInDisplayId,
PhysicalDisplayInfo phys) {
super(LocalDisplayAdapter.this, displayToken);
mBuiltInDisplayId = builtInDisplayId;
mPhys = new PhysicalDisplayInfo(phys);
}
public boolean updatePhysicalDisplayInfoLocked(PhysicalDisplayInfo phys) {
if (!mPhys.equals(phys)) {
mPhys.copyFrom(phys);
mHavePendingChanges = true;
return true;
}
return false;
}
@Override
public void applyPendingDisplayDeviceInfoChangesLocked() {
if (mHavePendingChanges) {
mInfo = null;
mHavePendingChanges = false;
}
}
@Override
public DisplayDeviceInfo getDisplayDeviceInfoLocked() {
if (mInfo == null) {
mInfo = new DisplayDeviceInfo();
mInfo.width = mPhys.width;
mInfo.height = mPhys.height;
mInfo.refreshRate = mPhys.refreshRate;
// Assume that all built-in displays have secure output (eg. HDCP) and
// support compositing from gralloc protected buffers.
mInfo.flags = DisplayDeviceInfo.FLAG_SECURE
| DisplayDeviceInfo.FLAG_SUPPORTS_PROTECTED_BUFFERS;
if (mBuiltInDisplayId == Surface.BUILT_IN_DISPLAY_ID_MAIN) {
mInfo.name = getContext().getResources().getString(
com.android.internal.R.string.display_manager_built_in_display_name);
mInfo.flags |= DisplayDeviceInfo.FLAG_DEFAULT_DISPLAY
| DisplayDeviceInfo.FLAG_ROTATES_WITH_CONTENT;
mInfo.densityDpi = (int)(mPhys.density * 160 + 0.5f);
mInfo.xDpi = mPhys.xDpi;
mInfo.yDpi = mPhys.yDpi;
mInfo.touch = DisplayDeviceInfo.TOUCH_INTERNAL;
} else {
mInfo.name = getContext().getResources().getString(
com.android.internal.R.string.display_manager_hdmi_display_name);
mInfo.touch = DisplayDeviceInfo.TOUCH_EXTERNAL;
mInfo.setAssumedDensityForExternalDisplay(mPhys.width, mPhys.height);
// For demonstration purposes, allow rotation of the external display.
// In the future we might allow the user to configure this directly.
if ("portrait".equals(SystemProperties.get("persist.demo.hdmirotation"))) {
mInfo.rotation = Surface.ROTATION_270;
}
}
}
return mInfo;
}
@Override
public void blankLocked() {
mBlanked = true;
Surface.blankDisplay(getDisplayTokenLocked());
}
@Override
public void unblankLocked() {
mBlanked = false;
Surface.unblankDisplay(getDisplayTokenLocked());
}
@Override
public void dumpLocked(PrintWriter pw) {
super.dumpLocked(pw);
pw.println("mBuiltInDisplayId=" + mBuiltInDisplayId);
pw.println("mPhys=" + mPhys);
pw.println("mBlanked=" + mBlanked);
}
}
private final class HotplugDisplayEventReceiver extends DisplayEventReceiver {
public HotplugDisplayEventReceiver(Looper looper) {
super(looper);
}
@Override
public void onHotplug(long timestampNanos, int builtInDisplayId, boolean connected) {
synchronized (getSyncRoot()) {
scanDisplaysLocked();
}
}
}
}
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