/*
* 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.os.Trace;
import android.util.Slog;
import android.util.SparseArray;
import android.view.Display;
import android.view.DisplayEventReceiver;
import android.view.Surface;
import android.view.SurfaceControl;
import java.io.PrintWriter;
import java.util.Arrays;
/**
* 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 String UNIQUE_ID_PREFIX = "local:";
private static final int[] BUILT_IN_DISPLAY_IDS_TO_SCAN = new int[] {
SurfaceControl.BUILT_IN_DISPLAY_ID_MAIN,
SurfaceControl.BUILT_IN_DISPLAY_ID_HDMI,
};
private final SparseArray<LocalDisplayDevice> mDevices =
new SparseArray<LocalDisplayDevice>();
private HotplugDisplayEventReceiver mHotplugReceiver;
// Called with SyncRoot lock held.
public LocalDisplayAdapter(DisplayManagerService.SyncRoot syncRoot,
Context context, Handler handler, Listener listener) {
super(syncRoot, context, handler, listener, TAG);
}
@Override
public void registerLocked() {
super.registerLocked();
mHotplugReceiver = new HotplugDisplayEventReceiver(getHandler().getLooper());
for (int builtInDisplayId : BUILT_IN_DISPLAY_IDS_TO_SCAN) {
tryConnectDisplayLocked(builtInDisplayId);
}
}
private void tryConnectDisplayLocked(int builtInDisplayId) {
IBinder displayToken = SurfaceControl.getBuiltInDisplay(builtInDisplayId);
if (displayToken != null) {
SurfaceControl.PhysicalDisplayInfo[] configs =
SurfaceControl.getDisplayConfigs(displayToken);
if (configs == null) {
// There are no valid configs for this device, so we can't use it
Slog.w(TAG, "No valid configs found for display device " +
builtInDisplayId);
return;
}
int activeConfig = SurfaceControl.getActiveConfig(displayToken);
if (activeConfig < 0) {
// There is no active config, and for now we don't have the
// policy to set one.
Slog.w(TAG, "No active config found for display device " +
builtInDisplayId);
return;
}
LocalDisplayDevice device = mDevices.get(builtInDisplayId);
if (device == null) {
// Display was added.
device = new LocalDisplayDevice(displayToken, builtInDisplayId,
configs, activeConfig);
mDevices.put(builtInDisplayId, device);
sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_ADDED);
} else if (device.updatePhysicalDisplayInfoLocked(configs, activeConfig)) {
// Display properties changed.
sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_CHANGED);
}
} else {
// The display is no longer available. Ignore the attempt to add it.
// If it was connected but has already been disconnected, we'll get a
// disconnect event that will remove it from mDevices.
}
}
private void tryDisconnectDisplayLocked(int builtInDisplayId) {
LocalDisplayDevice device = mDevices.get(builtInDisplayId);
if (device != null) {
// Display was removed.
mDevices.remove(builtInDisplayId);
sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_REMOVED);
}
}
static int getPowerModeForState(int state) {
switch (state) {
case Display.STATE_OFF:
return SurfaceControl.POWER_MODE_OFF;
case Display.STATE_DOZE:
return SurfaceControl.POWER_MODE_DOZE;
case Display.STATE_DOZE_SUSPEND:
return SurfaceControl.POWER_MODE_DOZE_SUSPEND;
default:
return SurfaceControl.POWER_MODE_NORMAL;
}
}
private final class LocalDisplayDevice extends DisplayDevice {
private final int mBuiltInDisplayId;
private final SurfaceControl.PhysicalDisplayInfo mPhys;
private final int mDefaultPhysicalDisplayInfo;
private DisplayDeviceInfo mInfo;
private boolean mHavePendingChanges;
private int mState = Display.STATE_UNKNOWN;
private float[] mSupportedRefreshRates;
private int[] mRefreshRateConfigIndices;
private float mLastRequestedRefreshRate;
public LocalDisplayDevice(IBinder displayToken, int builtInDisplayId,
SurfaceControl.PhysicalDisplayInfo[] physicalDisplayInfos, int activeDisplayInfo) {
super(LocalDisplayAdapter.this, displayToken, UNIQUE_ID_PREFIX + builtInDisplayId);
mBuiltInDisplayId = builtInDisplayId;
mPhys = new SurfaceControl.PhysicalDisplayInfo(
physicalDisplayInfos[activeDisplayInfo]);
mDefaultPhysicalDisplayInfo = activeDisplayInfo;
updateSupportedRefreshRatesLocked(physicalDisplayInfos, mPhys);
}
public boolean updatePhysicalDisplayInfoLocked(
SurfaceControl.PhysicalDisplayInfo[] physicalDisplayInfos, int activeDisplayInfo) {
SurfaceControl.PhysicalDisplayInfo newPhys = physicalDisplayInfos[activeDisplayInfo];
if (!mPhys.equals(newPhys)) {
mPhys.copyFrom(newPhys);
updateSupportedRefreshRatesLocked(physicalDisplayInfos, mPhys);
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;
mInfo.supportedRefreshRates = mSupportedRefreshRates;
mInfo.appVsyncOffsetNanos = mPhys.appVsyncOffsetNanos;
mInfo.presentationDeadlineNanos = mPhys.presentationDeadlineNanos;
mInfo.state = mState;
mInfo.uniqueId = getUniqueId();
// Assume that all built-in displays that have secure output (eg. HDCP) also
// support compositing from gralloc protected buffers.
if (mPhys.secure) {
mInfo.flags = DisplayDeviceInfo.FLAG_SECURE
| DisplayDeviceInfo.FLAG_SUPPORTS_PROTECTED_BUFFERS;
}
if (mBuiltInDisplayId == SurfaceControl.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.type = Display.TYPE_BUILT_IN;
mInfo.densityDpi = (int)(mPhys.density * 160 + 0.5f);
mInfo.xDpi = mPhys.xDpi;
mInfo.yDpi = mPhys.yDpi;
mInfo.touch = DisplayDeviceInfo.TOUCH_INTERNAL;
} else {
mInfo.type = Display.TYPE_HDMI;
mInfo.flags |= DisplayDeviceInfo.FLAG_PRESENTATION;
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;
}
// For demonstration purposes, allow rotation of the external display
// to follow the built-in display.
if (SystemProperties.getBoolean("persist.demo.hdmirotates", false)) {
mInfo.flags |= DisplayDeviceInfo.FLAG_ROTATES_WITH_CONTENT;
}
}
}
return mInfo;
}
@Override
public Runnable requestDisplayStateLocked(final int state) {
if (mState != state) {
final int displayId = mBuiltInDisplayId;
final IBinder token = getDisplayTokenLocked();
final int mode = getPowerModeForState(state);
mState = state;
updateDeviceInfoLocked();
// Defer actually setting the display power mode until we have exited
// the critical section since it can take hundreds of milliseconds
// to complete.
return new Runnable() {
@Override
public void run() {
Trace.traceBegin(Trace.TRACE_TAG_POWER, "requestDisplayState("
+ Display.stateToString(state) + ", id=" + displayId + ")");
try {
SurfaceControl.setDisplayPowerMode(token, mode);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_POWER);
}
}
};
}
return null;
}
@Override
public void requestRefreshRateLocked(float refreshRate) {
if (mLastRequestedRefreshRate == refreshRate) {
return;
}
mLastRequestedRefreshRate = refreshRate;
if (refreshRate != 0) {
final int N = mSupportedRefreshRates.length;
for (int i = 0; i < N; i++) {
if (refreshRate == mSupportedRefreshRates[i]) {
final int configIndex = mRefreshRateConfigIndices[i];
SurfaceControl.setActiveConfig(getDisplayTokenLocked(), configIndex);
return;
}
}
Slog.w(TAG, "Requested refresh rate " + refreshRate + " is unsupported.");
}
SurfaceControl.setActiveConfig(getDisplayTokenLocked(), mDefaultPhysicalDisplayInfo);
}
@Override
public void dumpLocked(PrintWriter pw) {
super.dumpLocked(pw);
pw.println("mBuiltInDisplayId=" + mBuiltInDisplayId);
pw.println("mPhys=" + mPhys);
pw.println("mState=" + Display.stateToString(mState));
}
private void updateDeviceInfoLocked() {
mInfo = null;
sendDisplayDeviceEventLocked(this, DISPLAY_DEVICE_EVENT_CHANGED);
}
private void updateSupportedRefreshRatesLocked(
SurfaceControl.PhysicalDisplayInfo[] physicalDisplayInfos,
SurfaceControl.PhysicalDisplayInfo activePhys) {
final int N = physicalDisplayInfos.length;
int idx = 0;
mSupportedRefreshRates = new float[N];
mRefreshRateConfigIndices = new int[N];
for (int i = 0; i < N; i++) {
final SurfaceControl.PhysicalDisplayInfo phys = physicalDisplayInfos[i];
if (activePhys.width == phys.width
&& activePhys.height == phys.height
&& activePhys.density == phys.density
&& activePhys.xDpi == phys.xDpi
&& activePhys.yDpi == phys.yDpi) {
mSupportedRefreshRates[idx] = phys.refreshRate;
mRefreshRateConfigIndices[idx++] = i;
}
}
if (idx != N) {
mSupportedRefreshRates = Arrays.copyOfRange(mSupportedRefreshRates, 0, idx);
mRefreshRateConfigIndices = Arrays.copyOfRange(mRefreshRateConfigIndices, 0, idx);
}
}
}
private final class HotplugDisplayEventReceiver extends DisplayEventReceiver {
public HotplugDisplayEventReceiver(Looper looper) {
super(looper);
}
@Override
public void onHotplug(long timestampNanos, int builtInDisplayId, boolean connected) {
synchronized (getSyncRoot()) {
if (connected) {
tryConnectDisplayLocked(builtInDisplayId);
} else {
tryDisconnectDisplayLocked(builtInDisplayId);
}
}
}
}
}
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