Jeff Brown | fa25bf5 | 2012-07-23 19:26:30 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.display; |
| 18 | |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 19 | import android.content.Context; |
| 20 | import android.os.Handler; |
P.Y. Laligand | b3b9eb3 | 2015-05-11 15:02:07 -0700 | [diff] [blame] | 21 | import android.view.Display; |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 22 | |
| 23 | import java.io.PrintWriter; |
P.Y. Laligand | b3b9eb3 | 2015-05-11 15:02:07 -0700 | [diff] [blame] | 24 | import java.util.concurrent.atomic.AtomicInteger; |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 25 | |
Jeff Brown | fa25bf5 | 2012-07-23 19:26:30 -0700 | [diff] [blame] | 26 | /** |
Jeff Brown | 848c2dc | 2012-08-19 20:18:08 -0700 | [diff] [blame] | 27 | * A display adapter makes zero or more display devices available to the system |
| 28 | * and provides facilities for discovering when displays are connected or disconnected. |
Jeff Brown | fa25bf5 | 2012-07-23 19:26:30 -0700 | [diff] [blame] | 29 | * <p> |
| 30 | * For now, all display adapters are registered in the system server but |
| 31 | * in principle it could be done from other processes. |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 32 | * </p><p> |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 33 | * Display adapters are guarded by the {@link DisplayManagerService.SyncRoot} lock. |
Jeff Brown | fa25bf5 | 2012-07-23 19:26:30 -0700 | [diff] [blame] | 34 | * </p> |
| 35 | */ |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 36 | abstract class DisplayAdapter { |
| 37 | private final DisplayManagerService.SyncRoot mSyncRoot; |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 38 | private final Context mContext; |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 39 | private final Handler mHandler; |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 40 | private final Listener mListener; |
| 41 | private final String mName; |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 42 | |
| 43 | public static final int DISPLAY_DEVICE_EVENT_ADDED = 1; |
| 44 | public static final int DISPLAY_DEVICE_EVENT_CHANGED = 2; |
| 45 | public static final int DISPLAY_DEVICE_EVENT_REMOVED = 3; |
| 46 | |
P.Y. Laligand | b3b9eb3 | 2015-05-11 15:02:07 -0700 | [diff] [blame] | 47 | /** |
| 48 | * Used to generate globally unique display mode ids. |
| 49 | */ |
| 50 | private static final AtomicInteger NEXT_DISPLAY_MODE_ID = new AtomicInteger(1); // 0 = no mode. |
| 51 | |
Jeff Brown | 6669250 | 2012-10-18 16:13:44 -0700 | [diff] [blame] | 52 | // Called with SyncRoot lock held. |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 53 | public DisplayAdapter(DisplayManagerService.SyncRoot syncRoot, |
| 54 | Context context, Handler handler, Listener listener, String name) { |
| 55 | mSyncRoot = syncRoot; |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 56 | mContext = context; |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 57 | mHandler = handler; |
| 58 | mListener = listener; |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 59 | mName = name; |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 60 | } |
| 61 | |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 62 | /** |
| 63 | * Gets the object that the display adapter should synchronize on when handling |
| 64 | * calls that come in from outside of the display manager service. |
| 65 | */ |
| 66 | public final DisplayManagerService.SyncRoot getSyncRoot() { |
| 67 | return mSyncRoot; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Gets the display adapter's context. |
| 72 | */ |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 73 | public final Context getContext() { |
| 74 | return mContext; |
| 75 | } |
| 76 | |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 77 | /** |
| 78 | * Gets a handler that the display adapter may use to post asynchronous messages. |
| 79 | */ |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 80 | public final Handler getHandler() { |
| 81 | return mHandler; |
| 82 | } |
| 83 | |
Jeff Brown | fa25bf5 | 2012-07-23 19:26:30 -0700 | [diff] [blame] | 84 | /** |
Jeff Brown | 848c2dc | 2012-08-19 20:18:08 -0700 | [diff] [blame] | 85 | * Gets the display adapter name for debugging purposes. |
Jeff Brown | fa25bf5 | 2012-07-23 19:26:30 -0700 | [diff] [blame] | 86 | */ |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 87 | public final String getName() { |
| 88 | return mName; |
| 89 | } |
Jeff Brown | fa25bf5 | 2012-07-23 19:26:30 -0700 | [diff] [blame] | 90 | |
Jeff Brown | 848c2dc | 2012-08-19 20:18:08 -0700 | [diff] [blame] | 91 | /** |
| 92 | * Registers the display adapter with the display manager. |
Jeff Brown | 848c2dc | 2012-08-19 20:18:08 -0700 | [diff] [blame] | 93 | * |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 94 | * The display adapter should register any built-in display devices as soon as possible. |
| 95 | * The boot process will wait for the default display to be registered. |
| 96 | * Other display devices can be registered dynamically later. |
Jeff Brown | 848c2dc | 2012-08-19 20:18:08 -0700 | [diff] [blame] | 97 | */ |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 98 | public void registerLocked() { |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Dumps the local state of the display adapter. |
| 103 | */ |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 104 | public void dumpLocked(PrintWriter pw) { |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Sends a display device event to the display adapter listener asynchronously. |
| 109 | */ |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 110 | protected final void sendDisplayDeviceEventLocked( |
| 111 | final DisplayDevice device, final int event) { |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 112 | mHandler.post(new Runnable() { |
| 113 | @Override |
| 114 | public void run() { |
| 115 | mListener.onDisplayDeviceEvent(device, event); |
| 116 | } |
| 117 | }); |
| 118 | } |
Jeff Brown | 848c2dc | 2012-08-19 20:18:08 -0700 | [diff] [blame] | 119 | |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 120 | /** |
| 121 | * Sends a request to perform traversals. |
| 122 | */ |
| 123 | protected final void sendTraversalRequestLocked() { |
| 124 | mHandler.post(new Runnable() { |
| 125 | @Override |
| 126 | public void run() { |
| 127 | mListener.onTraversalRequested(); |
| 128 | } |
| 129 | }); |
| 130 | } |
| 131 | |
P.Y. Laligand | b3b9eb3 | 2015-05-11 15:02:07 -0700 | [diff] [blame] | 132 | public static Display.Mode createMode(int width, int height, float refreshRate) { |
| 133 | return new Display.Mode( |
| 134 | NEXT_DISPLAY_MODE_ID.getAndIncrement(), width, height, refreshRate); |
| 135 | } |
| 136 | |
Jeff Brown | 848c2dc | 2012-08-19 20:18:08 -0700 | [diff] [blame] | 137 | public interface Listener { |
Jeff Brown | bd6e150 | 2012-08-28 03:27:37 -0700 | [diff] [blame] | 138 | public void onDisplayDeviceEvent(DisplayDevice device, int event); |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 139 | public void onTraversalRequested(); |
Jeff Brown | 848c2dc | 2012-08-19 20:18:08 -0700 | [diff] [blame] | 140 | } |
Jeff Brown | fa25bf5 | 2012-07-23 19:26:30 -0700 | [diff] [blame] | 141 | } |