Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 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.hdmi; |
| 18 | |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 19 | import android.hardware.hdmi.HdmiCec; |
Jungshik Jang | 7d9a843 | 2014-04-29 15:12:43 +0900 | [diff] [blame^] | 20 | import android.hardware.hdmi.HdmiCecDeviceInfo; |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 21 | import android.hardware.hdmi.HdmiCecMessage; |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 22 | import android.os.Handler; |
| 23 | import android.os.Looper; |
| 24 | import android.os.Message; |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 25 | import android.util.Slog; |
Jungshik Jang | 7d9a843 | 2014-04-29 15:12:43 +0900 | [diff] [blame^] | 26 | import android.util.SparseArray; |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 27 | |
Jungshik Jang | 7d9a843 | 2014-04-29 15:12:43 +0900 | [diff] [blame^] | 28 | import java.util.ArrayList; |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 29 | import java.util.Arrays; |
Jungshik Jang | 7d9a843 | 2014-04-29 15:12:43 +0900 | [diff] [blame^] | 30 | import java.util.List; |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 31 | |
| 32 | /** |
| 33 | * Manages HDMI-CEC command and behaviors. It converts user's command into CEC command |
| 34 | * and pass it to CEC HAL so that it sends message to other device. For incoming |
| 35 | * message it translates the message and delegates it to proper module. |
| 36 | * |
| 37 | * <p>It can be created only by {@link HdmiCecController#create} |
| 38 | * |
| 39 | * <p>Declared as package-private, accessed by {@link HdmiControlService} only. |
| 40 | */ |
| 41 | class HdmiCecController { |
| 42 | private static final String TAG = "HdmiCecController"; |
| 43 | |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 44 | // A message to pass cec send command to IO looper. |
| 45 | private static final int MSG_SEND_CEC_COMMAND = 1; |
| 46 | |
| 47 | // Message types to handle incoming message in main service looper. |
| 48 | private final static int MSG_RECEIVE_CEC_COMMAND = 1; |
| 49 | |
| 50 | // TODO: move these values to HdmiCec.java once make it internal constant class. |
| 51 | // CEC's ABORT reason values. |
| 52 | private static final int ABORT_UNRECOGNIZED_MODE = 0; |
| 53 | private static final int ABORT_NOT_IN_CORRECT_MODE = 1; |
| 54 | private static final int ABORT_CANNOT_PROVIDE_SOURCE = 2; |
| 55 | private static final int ABORT_INVALID_OPERAND = 3; |
| 56 | private static final int ABORT_REFUSED = 4; |
| 57 | private static final int ABORT_UNABLE_TO_DETERMINE = 5; |
| 58 | |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 59 | // Handler instance to process synchronous I/O (mainly send) message. |
| 60 | private Handler mIoHandler; |
| 61 | |
| 62 | // Handler instance to process various messages coming from other CEC |
| 63 | // device or issued by internal state change. |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 64 | private Handler mControlHandler; |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 65 | |
| 66 | // Stores the pointer to the native implementation of the service that |
| 67 | // interacts with HAL. |
| 68 | private long mNativePtr; |
| 69 | |
Jungshik Jang | 7d9a843 | 2014-04-29 15:12:43 +0900 | [diff] [blame^] | 70 | // Map-like container of all cec devices. A logical address of device is |
| 71 | // used as key of container. |
| 72 | private final SparseArray<HdmiCecDeviceInfo> mDeviceInfos = |
| 73 | new SparseArray<HdmiCecDeviceInfo>(); |
| 74 | |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 75 | // Private constructor. Use HdmiCecController.create(). |
| 76 | private HdmiCecController() { |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * A factory method to get {@link HdmiCecController}. If it fails to initialize |
| 81 | * inner device or has no device it will return {@code null}. |
| 82 | * |
| 83 | * <p>Declared as package-private, accessed by {@link HdmiControlService} only. |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 84 | * @param service {@link HdmiControlService} instance used to create internal handler |
| 85 | * and to pass callback for incoming message or event. |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 86 | * @return {@link HdmiCecController} if device is initialized successfully. Otherwise, |
| 87 | * returns {@code null}. |
| 88 | */ |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 89 | static HdmiCecController create(HdmiControlService service) { |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 90 | HdmiCecController handler = new HdmiCecController(); |
| 91 | long nativePtr = nativeInit(handler); |
| 92 | if (nativePtr == 0L) { |
| 93 | handler = null; |
| 94 | return null; |
| 95 | } |
| 96 | |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 97 | handler.init(service, nativePtr); |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 98 | return handler; |
| 99 | } |
| 100 | |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 101 | private static byte[] buildBody(int opcode, byte[] params) { |
| 102 | byte[] body = new byte[params.length + 1]; |
| 103 | body[0] = (byte) opcode; |
| 104 | System.arraycopy(params, 0, body, 1, params.length); |
| 105 | return body; |
| 106 | } |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 107 | |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 108 | private final class IoHandler extends Handler { |
| 109 | private IoHandler(Looper looper) { |
| 110 | super(looper); |
| 111 | } |
| 112 | |
| 113 | @Override |
| 114 | public void handleMessage(Message msg) { |
| 115 | switch (msg.what) { |
| 116 | case MSG_SEND_CEC_COMMAND: |
| 117 | HdmiCecMessage cecMessage = (HdmiCecMessage) msg.obj; |
| 118 | byte[] body = buildBody(cecMessage.getOpcode(), cecMessage.getParams()); |
| 119 | nativeSendCecCommand(mNativePtr, cecMessage.getSource(), |
| 120 | cecMessage.getDestination(), body); |
| 121 | break; |
| 122 | default: |
| 123 | Slog.w(TAG, "Unsupported CEC Io request:" + msg.what); |
| 124 | break; |
| 125 | } |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | private final class ControlHandler extends Handler { |
| 130 | private ControlHandler(Looper looper) { |
| 131 | super(looper); |
| 132 | } |
| 133 | |
| 134 | @Override |
| 135 | public void handleMessage(Message msg) { |
| 136 | switch (msg.what) { |
| 137 | case MSG_RECEIVE_CEC_COMMAND: |
| 138 | // TODO: delegate it to HdmiControl service. |
| 139 | onReceiveCommand((HdmiCecMessage) msg.obj); |
| 140 | break; |
| 141 | default: |
| 142 | Slog.i(TAG, "Unsupported message type:" + msg.what); |
| 143 | break; |
| 144 | } |
| 145 | } |
| 146 | } |
| 147 | |
Jungshik Jang | 7d9a843 | 2014-04-29 15:12:43 +0900 | [diff] [blame^] | 148 | /** |
| 149 | * Add a new {@link HdmiCecDeviceInfo}. It returns old device info which has the same |
| 150 | * logical address as new device info's. |
| 151 | * |
| 152 | * <p>Declared as package-private. accessed by {@link HdmiControlService} only. |
| 153 | * |
| 154 | * @param deviceInfo a new {@link HdmiCecDeviceInfo} to be added. |
| 155 | * @return {@code null} if it is new device. Otherwise, returns old {@HdmiCecDeviceInfo} |
| 156 | * that has the same logical address as new one has. |
| 157 | */ |
| 158 | HdmiCecDeviceInfo addDeviceInfo(HdmiCecDeviceInfo deviceInfo) { |
| 159 | HdmiCecDeviceInfo oldDeviceInfo = getDeviceInfo(deviceInfo.getLogicalAddress()); |
| 160 | if (oldDeviceInfo != null) { |
| 161 | removeDeviceInfo(deviceInfo.getLogicalAddress()); |
| 162 | } |
| 163 | mDeviceInfos.append(deviceInfo.getLogicalAddress(), deviceInfo); |
| 164 | return oldDeviceInfo; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Remove a device info corresponding to the given {@code logicalAddress}. |
| 169 | * It returns removed {@link HdmiCecDeviceInfo} if exists. |
| 170 | * |
| 171 | * <p>Declared as package-private. accessed by {@link HdmiControlService} only. |
| 172 | * |
| 173 | * @param logicalAddress logical address of device to be removed |
| 174 | * @return removed {@link HdmiCecDeviceInfo} it exists. Otherwise, returns {@code null} |
| 175 | */ |
| 176 | HdmiCecDeviceInfo removeDeviceInfo(int logicalAddress) { |
| 177 | HdmiCecDeviceInfo deviceInfo = mDeviceInfos.get(logicalAddress); |
| 178 | if (deviceInfo != null) { |
| 179 | mDeviceInfos.remove(logicalAddress); |
| 180 | } |
| 181 | return deviceInfo; |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * Return a list of all {@HdmiCecDeviceInfo}. |
| 186 | * |
| 187 | * <p>Declared as package-private. accessed by {@link HdmiControlService} only. |
| 188 | */ |
| 189 | List<HdmiCecDeviceInfo> getDeviceInfoList() { |
| 190 | List<HdmiCecDeviceInfo> deviceInfoList = new ArrayList<HdmiCecDeviceInfo>( |
| 191 | mDeviceInfos.size()); |
| 192 | for (int i = 0; i < mDeviceInfos.size(); ++i) { |
| 193 | deviceInfoList.add(mDeviceInfos.valueAt(i)); |
| 194 | } |
| 195 | return deviceInfoList; |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Return a {@link HdmiCecDeviceInfo} corresponding to the given {@code logicalAddress}. |
| 200 | * |
| 201 | * <p>Declared as package-private. accessed by {@link HdmiControlService} only. |
| 202 | * |
| 203 | * @param logicalAddress logical address to be retrieved |
| 204 | * @return {@link HdmiCecDeviceInfo} matched with the given {@code logicalAddress}. |
| 205 | * Returns null if no logical address matched |
| 206 | */ |
| 207 | HdmiCecDeviceInfo getDeviceInfo(int logicalAddress) { |
| 208 | return mDeviceInfos.get(logicalAddress); |
| 209 | } |
| 210 | |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 211 | private void init(HdmiControlService service, long nativePtr) { |
| 212 | mIoHandler = new IoHandler(service.getServiceLooper()); |
| 213 | mControlHandler = new ControlHandler(service.getServiceLooper()); |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 214 | mNativePtr = nativePtr; |
| 215 | } |
| 216 | |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 217 | private void onReceiveCommand(HdmiCecMessage message) { |
| 218 | // TODO: Handle message according to opcode type. |
| 219 | |
| 220 | // TODO: Use device's source address for broadcast message. |
| 221 | int sourceAddress = message.getDestination() != HdmiCec.ADDR_BROADCAST ? |
| 222 | message.getDestination() : 0; |
| 223 | // Reply <Feature Abort> to initiator (source) for all requests. |
| 224 | sendFeatureAbort(sourceAddress, message.getSource(), message.getOpcode(), |
| 225 | ABORT_REFUSED); |
| 226 | } |
| 227 | |
| 228 | private void sendFeatureAbort(int srcAddress, int destAddress, int originalOpcode, |
| 229 | int reason) { |
| 230 | byte[] params = new byte[2]; |
| 231 | params[0] = (byte) originalOpcode; |
| 232 | params[1] = (byte) reason; |
| 233 | |
| 234 | HdmiCecMessage cecMessage = new HdmiCecMessage(srcAddress, destAddress, |
| 235 | HdmiCec.MESSAGE_FEATURE_ABORT, params); |
| 236 | Message message = mIoHandler.obtainMessage(MSG_SEND_CEC_COMMAND, cecMessage); |
| 237 | mIoHandler.sendMessage(message); |
| 238 | } |
| 239 | |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 240 | /** |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 241 | * Called by native when incoming CEC message arrived. |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 242 | */ |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 243 | private void handleIncomingCecCommand(int srcAddress, int dstAddress, byte[] body) { |
| 244 | byte opcode = body[0]; |
| 245 | byte params[] = Arrays.copyOfRange(body, 1, body.length); |
| 246 | HdmiCecMessage cecMessage = new HdmiCecMessage(srcAddress, dstAddress, opcode, params); |
| 247 | |
| 248 | // Delegate message to main handler so that it handles in main thread. |
| 249 | Message message = mControlHandler.obtainMessage( |
| 250 | MSG_RECEIVE_CEC_COMMAND, cecMessage); |
| 251 | mControlHandler.sendMessage(message); |
| 252 | } |
| 253 | |
| 254 | /** |
| 255 | * Called by native when a hotplug event issues. |
| 256 | */ |
| 257 | private void handleHotplug(boolean connected) { |
| 258 | // TODO: Delegate event to main message handler. |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | private static native long nativeInit(HdmiCecController handler); |
Jungshik Jang | e9c77c8 | 2014-04-24 20:30:09 +0900 | [diff] [blame] | 262 | private static native int nativeSendCecCommand(long contollerPtr, int srcAddress, |
| 263 | int dstAddress, byte[] body); |
Jungshik Jang | 0792d37 | 2014-04-23 17:57:26 +0900 | [diff] [blame] | 264 | } |