| /* |
| * 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.res.Resources; |
| import android.os.Build; |
| import com.android.server.LocalServices; |
| import com.android.server.lights.Light; |
| import com.android.server.lights.LightsManager; |
| |
| import android.content.Context; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.PowerManager; |
| 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.ArrayList; |
| |
| /** |
| * 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 boolean DEBUG = false; |
| |
| private static final String UNIQUE_ID_PREFIX = "local:"; |
| |
| private static final String PROPERTY_EMULATOR_CIRCULAR = "ro.emulator.circular"; |
| |
| 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>(); |
| @SuppressWarnings("unused") // Becomes active at instantiation time. |
| 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 Light mBacklight; |
| private final SparseArray<DisplayModeRecord> mSupportedModes = new SparseArray<>(); |
| |
| private DisplayDeviceInfo mInfo; |
| private boolean mHavePendingChanges; |
| private int mState = Display.STATE_UNKNOWN; |
| private int mBrightness = PowerManager.BRIGHTNESS_DEFAULT; |
| private int mDefaultModeId; |
| private int mActiveModeId; |
| private boolean mActiveModeInvalid; |
| |
| public LocalDisplayDevice(IBinder displayToken, int builtInDisplayId, |
| SurfaceControl.PhysicalDisplayInfo[] physicalDisplayInfos, int activeDisplayInfo) { |
| super(LocalDisplayAdapter.this, displayToken, UNIQUE_ID_PREFIX + builtInDisplayId); |
| mBuiltInDisplayId = builtInDisplayId; |
| updatePhysicalDisplayInfoLocked(physicalDisplayInfos, activeDisplayInfo); |
| if (mBuiltInDisplayId == SurfaceControl.BUILT_IN_DISPLAY_ID_MAIN) { |
| LightsManager lights = LocalServices.getService(LightsManager.class); |
| mBacklight = lights.getLight(LightsManager.LIGHT_ID_BACKLIGHT); |
| } else { |
| mBacklight = null; |
| } |
| } |
| |
| public boolean updatePhysicalDisplayInfoLocked( |
| SurfaceControl.PhysicalDisplayInfo[] physicalDisplayInfos, int activeDisplayInfo) { |
| // Build an updated list of all existing modes. |
| boolean modesAdded = false; |
| DisplayModeRecord activeRecord = null; |
| ArrayList<DisplayModeRecord> records = new ArrayList<DisplayModeRecord>(); |
| for (int i = 0; i < physicalDisplayInfos.length; i++) { |
| SurfaceControl.PhysicalDisplayInfo info = physicalDisplayInfos[i]; |
| DisplayModeRecord record = findDisplayModeRecord(info); |
| if (record != null) { |
| record.mPhysIndex = i; |
| } else { |
| record = new DisplayModeRecord(info, i); |
| modesAdded = true; |
| } |
| records.add(record); |
| if (i == activeDisplayInfo) { |
| activeRecord = record; |
| } |
| } |
| // Check whether surface flinger spontaneously changed modes out from under us. Schedule |
| // traversals to ensure that the correct state is reapplied if necessary. |
| if (mActiveModeId != 0 |
| && mActiveModeId != activeRecord.mMode.getModeId()) { |
| mActiveModeInvalid = true; |
| sendTraversalRequestLocked(); |
| } |
| // If no modes were added and we have the same number of modes as before, then nothing |
| // actually changed except possibly the physical index (which we only care about when |
| // setting the mode) so we're done. |
| if (records.size() == mSupportedModes.size() && !modesAdded) { |
| return false; |
| } |
| // Update the index of modes. |
| mHavePendingChanges = true; |
| mSupportedModes.clear(); |
| for (DisplayModeRecord record : records) { |
| mSupportedModes.put(record.mMode.getModeId(), record); |
| } |
| // Update the default mode if needed. |
| if (mSupportedModes.indexOfKey(mDefaultModeId) < 0) { |
| if (mDefaultModeId != 0) { |
| Slog.w(TAG, "Default display mode no longer available, using currently active" |
| + " mode as default."); |
| } |
| mDefaultModeId = activeRecord.mMode.getModeId(); |
| } |
| // Determine whether the active mode is still there. |
| if (mSupportedModes.indexOfKey(mActiveModeId) < 0) { |
| if (mActiveModeId != 0) { |
| Slog.w(TAG, "Active display mode no longer available, reverting to default" |
| + " mode."); |
| } |
| mActiveModeId = mDefaultModeId; |
| mActiveModeInvalid = true; |
| } |
| // Schedule traversals so that we apply pending changes. |
| sendTraversalRequestLocked(); |
| return true; |
| } |
| |
| private DisplayModeRecord findDisplayModeRecord(SurfaceControl.PhysicalDisplayInfo info) { |
| for (int i = 0; i < mSupportedModes.size(); i++) { |
| DisplayModeRecord record = mSupportedModes.valueAt(i); |
| if (record.mPhys.equals(info)) { |
| return record; |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public void applyPendingDisplayDeviceInfoChangesLocked() { |
| if (mHavePendingChanges) { |
| mInfo = null; |
| mHavePendingChanges = false; |
| } |
| } |
| |
| @Override |
| public DisplayDeviceInfo getDisplayDeviceInfoLocked() { |
| if (mInfo == null) { |
| SurfaceControl.PhysicalDisplayInfo phys = mSupportedModes.get(mActiveModeId).mPhys; |
| mInfo = new DisplayDeviceInfo(); |
| mInfo.width = phys.width; |
| mInfo.height = phys.height; |
| mInfo.modeId = mActiveModeId; |
| mInfo.defaultModeId = mDefaultModeId; |
| mInfo.supportedModes = new Display.Mode[mSupportedModes.size()]; |
| for (int i = 0; i < mSupportedModes.size(); i++) { |
| DisplayModeRecord record = mSupportedModes.valueAt(i); |
| mInfo.supportedModes[i] = record.mMode; |
| } |
| mInfo.appVsyncOffsetNanos = phys.appVsyncOffsetNanos; |
| mInfo.presentationDeadlineNanos = phys.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 (phys.secure) { |
| mInfo.flags = DisplayDeviceInfo.FLAG_SECURE |
| | DisplayDeviceInfo.FLAG_SUPPORTS_PROTECTED_BUFFERS; |
| } |
| |
| if (mBuiltInDisplayId == SurfaceControl.BUILT_IN_DISPLAY_ID_MAIN) { |
| final Resources res = getContext().getResources(); |
| mInfo.name = res.getString( |
| com.android.internal.R.string.display_manager_built_in_display_name); |
| mInfo.flags |= DisplayDeviceInfo.FLAG_DEFAULT_DISPLAY |
| | DisplayDeviceInfo.FLAG_ROTATES_WITH_CONTENT; |
| if (res.getBoolean(com.android.internal.R.bool.config_mainBuiltInDisplayIsRound) |
| || (Build.HARDWARE.contains("goldfish") |
| && SystemProperties.getBoolean(PROPERTY_EMULATOR_CIRCULAR, false))) { |
| mInfo.flags |= DisplayDeviceInfo.FLAG_ROUND; |
| } |
| mInfo.type = Display.TYPE_BUILT_IN; |
| mInfo.densityDpi = (int)(phys.density * 160 + 0.5f); |
| mInfo.xDpi = phys.xDpi; |
| mInfo.yDpi = phys.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(phys.width, phys.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, final int brightness) { |
| // Assume that the brightness is off if the display is being turned off. |
| assert state != Display.STATE_OFF || brightness == PowerManager.BRIGHTNESS_OFF; |
| |
| final boolean stateChanged = (mState != state); |
| final boolean brightnessChanged = (mBrightness != brightness) && mBacklight != null; |
| if (stateChanged || brightnessChanged) { |
| final int displayId = mBuiltInDisplayId; |
| final IBinder token = getDisplayTokenLocked(); |
| final int oldState = mState; |
| |
| if (stateChanged) { |
| mState = state; |
| updateDeviceInfoLocked(); |
| } |
| |
| if (brightnessChanged) { |
| mBrightness = brightness; |
| } |
| |
| // Defer actually setting the display state until after we have exited |
| // the critical section since it can take hundreds of milliseconds |
| // to complete. |
| return new Runnable() { |
| @Override |
| public void run() { |
| // Exit a suspended state before making any changes. |
| int currentState = oldState; |
| if (Display.isSuspendedState(oldState) |
| || oldState == Display.STATE_UNKNOWN) { |
| if (!Display.isSuspendedState(state)) { |
| setDisplayState(state); |
| currentState = state; |
| } else if (state == Display.STATE_DOZE_SUSPEND |
| || oldState == Display.STATE_DOZE_SUSPEND) { |
| setDisplayState(Display.STATE_DOZE); |
| currentState = Display.STATE_DOZE; |
| } else { |
| return; // old state and new state is off |
| } |
| } |
| |
| // Apply brightness changes given that we are in a non-suspended state. |
| if (brightnessChanged) { |
| setDisplayBrightness(brightness); |
| } |
| |
| // Enter the final desired state, possibly suspended. |
| if (state != currentState) { |
| setDisplayState(state); |
| } |
| } |
| |
| private void setDisplayState(int state) { |
| if (DEBUG) { |
| Slog.d(TAG, "setDisplayState(" |
| + "id=" + displayId |
| + ", state=" + Display.stateToString(state) + ")"); |
| } |
| |
| Trace.traceBegin(Trace.TRACE_TAG_POWER, "setDisplayState(" |
| + "id=" + displayId |
| + ", state=" + Display.stateToString(state) + ")"); |
| try { |
| final int mode = getPowerModeForState(state); |
| SurfaceControl.setDisplayPowerMode(token, mode); |
| } finally { |
| Trace.traceEnd(Trace.TRACE_TAG_POWER); |
| } |
| } |
| |
| private void setDisplayBrightness(int brightness) { |
| if (DEBUG) { |
| Slog.d(TAG, "setDisplayBrightness(" |
| + "id=" + displayId + ", brightness=" + brightness + ")"); |
| } |
| |
| Trace.traceBegin(Trace.TRACE_TAG_POWER, "setDisplayBrightness(" |
| + "id=" + displayId + ", brightness=" + brightness + ")"); |
| try { |
| mBacklight.setBrightness(brightness); |
| } finally { |
| Trace.traceEnd(Trace.TRACE_TAG_POWER); |
| } |
| } |
| }; |
| } |
| return null; |
| } |
| |
| @Override |
| public void requestModeInTransactionLocked(int modeId) { |
| if (modeId == 0) { |
| modeId = mDefaultModeId; |
| } else if (mSupportedModes.indexOfKey(modeId) < 0) { |
| Slog.w(TAG, "Requested mode " + modeId + " is not supported by this display," |
| + " reverting to default display mode."); |
| modeId = mDefaultModeId; |
| } |
| if (mActiveModeId == modeId && !mActiveModeInvalid) { |
| return; |
| } |
| DisplayModeRecord record = mSupportedModes.get(modeId); |
| SurfaceControl.setActiveConfig(getDisplayTokenLocked(), record.mPhysIndex); |
| mActiveModeId = modeId; |
| mActiveModeInvalid = false; |
| updateDeviceInfoLocked(); |
| } |
| |
| @Override |
| public void dumpLocked(PrintWriter pw) { |
| super.dumpLocked(pw); |
| pw.println("mBuiltInDisplayId=" + mBuiltInDisplayId); |
| pw.println("mActiveModeId=" + mActiveModeId); |
| pw.println("mState=" + Display.stateToString(mState)); |
| pw.println("mBrightness=" + mBrightness); |
| pw.println("mBacklight=" + mBacklight); |
| } |
| |
| private void updateDeviceInfoLocked() { |
| mInfo = null; |
| sendDisplayDeviceEventLocked(this, DISPLAY_DEVICE_EVENT_CHANGED); |
| } |
| } |
| |
| /** |
| * Keeps track of a display configuration. |
| */ |
| private static final class DisplayModeRecord { |
| public final Display.Mode mMode; |
| public final SurfaceControl.PhysicalDisplayInfo mPhys; |
| public int mPhysIndex; |
| |
| public DisplayModeRecord(SurfaceControl.PhysicalDisplayInfo phys, int physIndex) { |
| mMode = createMode(phys.width, phys.height, phys.refreshRate); |
| mPhys = phys; |
| mPhysIndex = physIndex; |
| } |
| } |
| |
| 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); |
| } |
| } |
| } |
| } |
| } |
