Wonsik Kim | c22dbb6 | 2014-05-26 02:26:04 +0000 | [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.tv; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.os.IBinder; |
| 21 | import android.os.RemoteException; |
| 22 | import android.tv.ITvInputHardware; |
| 23 | import android.tv.ITvInputHardwareCallback; |
| 24 | import android.tv.TvInputHardwareInfo; |
| 25 | import android.tv.TvStreamConfig; |
| 26 | import android.util.Slog; |
| 27 | import android.util.SparseArray; |
| 28 | import android.view.KeyEvent; |
| 29 | import android.view.Surface; |
| 30 | |
| 31 | import java.util.ArrayList; |
| 32 | import java.util.HashSet; |
| 33 | import java.util.List; |
| 34 | import java.util.Set; |
| 35 | |
| 36 | /** |
| 37 | * A helper class for TvInputManagerService to handle TV input hardware. |
| 38 | * |
| 39 | * This class does a basic connection management and forwarding calls to TvInputHal which eventually |
| 40 | * calls to tv_input HAL module. |
| 41 | * |
| 42 | * @hide |
| 43 | */ |
| 44 | class TvInputHardwareManager implements TvInputHal.Callback { |
| 45 | private static final String TAG = TvInputHardwareManager.class.getSimpleName(); |
| 46 | private final TvInputHal mHal = new TvInputHal(this); |
| 47 | private final SparseArray<Connection> mConnections = new SparseArray<Connection>(); |
| 48 | private final List<TvInputHardwareInfo> mInfoList = new ArrayList<TvInputHardwareInfo>(); |
| 49 | private final Context mContext; |
| 50 | private final Set<Integer> mActiveHdmiSources = new HashSet<Integer>(); |
| 51 | |
| 52 | private final Object mLock = new Object(); |
| 53 | |
| 54 | public TvInputHardwareManager(Context context) { |
| 55 | mContext = context; |
| 56 | // TODO(hdmi): mHdmiManager = mContext.getSystemService(...); |
| 57 | // TODO(hdmi): mHdmiClient = mHdmiManager.getTvClient(); |
| 58 | mHal.init(); |
| 59 | } |
| 60 | |
| 61 | @Override |
| 62 | public void onDeviceAvailable( |
| 63 | TvInputHardwareInfo info, TvStreamConfig[] configs) { |
| 64 | synchronized (mLock) { |
| 65 | Connection connection = new Connection(info); |
| 66 | connection.updateConfigsLocked(configs); |
| 67 | mConnections.put(info.getDeviceId(), connection); |
| 68 | buildInfoListLocked(); |
| 69 | // TODO: notify if necessary |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | private void buildInfoListLocked() { |
| 74 | mInfoList.clear(); |
| 75 | for (int i = 0; i < mConnections.size(); ++i) { |
| 76 | mInfoList.add(mConnections.valueAt(i).getInfoLocked()); |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | @Override |
| 81 | public void onDeviceUnavailable(int deviceId) { |
| 82 | synchronized (mLock) { |
| 83 | Connection connection = mConnections.get(deviceId); |
| 84 | if (connection == null) { |
| 85 | Slog.e(TAG, "onDeviceUnavailable: Cannot find a connection with " + deviceId); |
| 86 | return; |
| 87 | } |
| 88 | connection.resetLocked(null, null, null, null); |
| 89 | mConnections.remove(deviceId); |
| 90 | buildInfoListLocked(); |
| 91 | // TODO: notify if necessary |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public void onStreamConfigurationChanged(int deviceId, TvStreamConfig[] configs) { |
| 97 | synchronized (mLock) { |
| 98 | Connection connection = mConnections.get(deviceId); |
| 99 | if (connection == null) { |
| 100 | Slog.e(TAG, "StreamConfigurationChanged: Cannot find a connection with " |
| 101 | + deviceId); |
| 102 | return; |
| 103 | } |
| 104 | connection.updateConfigsLocked(configs); |
| 105 | try { |
| 106 | connection.getCallbackLocked().onStreamConfigChanged(configs); |
| 107 | } catch (RemoteException e) { |
| 108 | Slog.e(TAG, "onStreamConfigurationChanged: " + e); |
| 109 | } |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | public List<TvInputHardwareInfo> getHardwareList() { |
| 114 | synchronized (mLock) { |
| 115 | return mInfoList; |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Create a TvInputHardware object with a specific deviceId. One service at a time can access |
| 121 | * the object, and if more than one process attempts to create hardware with the same deviceId, |
| 122 | * the latest service will get the object and all the other hardware are released. The |
| 123 | * release is notified via ITvInputHardwareCallback.onReleased(). |
| 124 | */ |
| 125 | public ITvInputHardware acquireHardware(int deviceId, ITvInputHardwareCallback callback, |
| 126 | int callingUid, int resolvedUserId) { |
| 127 | if (callback == null) { |
| 128 | throw new NullPointerException(); |
| 129 | } |
| 130 | synchronized (mLock) { |
| 131 | Connection connection = mConnections.get(deviceId); |
| 132 | if (connection == null) { |
| 133 | Slog.e(TAG, "Invalid deviceId : " + deviceId); |
| 134 | return null; |
| 135 | } |
| 136 | if (connection.getCallingUidLocked() != callingUid |
| 137 | || connection.getResolvedUserIdLocked() != resolvedUserId) { |
| 138 | TvInputHardwareImpl hardware = new TvInputHardwareImpl(connection.getInfoLocked()); |
| 139 | try { |
| 140 | callback.asBinder().linkToDeath(connection, 0); |
| 141 | } catch (RemoteException e) { |
| 142 | hardware.release(); |
| 143 | return null; |
| 144 | } |
| 145 | connection.resetLocked(hardware, callback, callingUid, resolvedUserId); |
| 146 | } |
| 147 | return connection.getHardwareLocked(); |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * Release the specified hardware. |
| 153 | */ |
| 154 | public void releaseHardware(int deviceId, ITvInputHardware hardware, int callingUid, |
| 155 | int resolvedUserId) { |
| 156 | synchronized (mLock) { |
| 157 | Connection connection = mConnections.get(deviceId); |
| 158 | if (connection == null) { |
| 159 | Slog.e(TAG, "Invalid deviceId : " + deviceId); |
| 160 | return; |
| 161 | } |
| 162 | if (connection.getHardwareLocked() != hardware |
| 163 | || connection.getCallingUidLocked() != callingUid |
| 164 | || connection.getResolvedUserIdLocked() != resolvedUserId) { |
| 165 | return; |
| 166 | } |
| 167 | connection.resetLocked(null, null, null, null); |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | private class Connection implements IBinder.DeathRecipient { |
| 172 | private final TvInputHardwareInfo mInfo; |
| 173 | private TvInputHardwareImpl mHardware = null; |
| 174 | private ITvInputHardwareCallback mCallback; |
| 175 | private TvStreamConfig[] mConfigs = null; |
| 176 | private Integer mCallingUid = null; |
| 177 | private Integer mResolvedUserId = null; |
| 178 | |
| 179 | public Connection(TvInputHardwareInfo info) { |
| 180 | mInfo = info; |
| 181 | } |
| 182 | |
| 183 | // *Locked methods assume TvInputHardwareManager.mLock is held. |
| 184 | |
| 185 | public void resetLocked(TvInputHardwareImpl hardware, |
| 186 | ITvInputHardwareCallback callback, Integer callingUid, Integer resolvedUserId) { |
| 187 | if (mHardware != null) { |
| 188 | try { |
| 189 | mCallback.onReleased(); |
| 190 | } catch (RemoteException e) { |
| 191 | Slog.e(TAG, "Connection::resetHardware: " + e); |
| 192 | } |
| 193 | mHardware.release(); |
| 194 | } |
| 195 | mHardware = hardware; |
| 196 | mCallback = callback; |
| 197 | mCallingUid = callingUid; |
| 198 | mResolvedUserId = resolvedUserId; |
| 199 | |
| 200 | if (mHardware != null && mCallback != null) { |
| 201 | try { |
| 202 | mCallback.onStreamConfigChanged(getConfigsLocked()); |
| 203 | } catch (RemoteException e) { |
| 204 | Slog.e(TAG, "Connection::resetHardware: " + e); |
| 205 | } |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | public void updateConfigsLocked(TvStreamConfig[] configs) { |
| 210 | mConfigs = configs; |
| 211 | } |
| 212 | |
| 213 | public TvInputHardwareInfo getInfoLocked() { |
| 214 | return mInfo; |
| 215 | } |
| 216 | |
| 217 | public ITvInputHardware getHardwareLocked() { |
| 218 | return mHardware; |
| 219 | } |
| 220 | |
| 221 | public ITvInputHardwareCallback getCallbackLocked() { |
| 222 | return mCallback; |
| 223 | } |
| 224 | |
| 225 | public TvStreamConfig[] getConfigsLocked() { |
| 226 | return mConfigs; |
| 227 | } |
| 228 | |
| 229 | public int getCallingUidLocked() { |
| 230 | return mCallingUid; |
| 231 | } |
| 232 | |
| 233 | public int getResolvedUserIdLocked() { |
| 234 | return mResolvedUserId; |
| 235 | } |
| 236 | |
| 237 | @Override |
| 238 | public void binderDied() { |
| 239 | synchronized (mLock) { |
| 240 | resetLocked(null, null, null, null); |
| 241 | } |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | private class TvInputHardwareImpl extends ITvInputHardware.Stub { |
| 246 | private final TvInputHardwareInfo mInfo; |
| 247 | private boolean mReleased = false; |
| 248 | private final Object mImplLock = new Object(); |
| 249 | |
| 250 | public TvInputHardwareImpl(TvInputHardwareInfo info) { |
| 251 | mInfo = info; |
| 252 | } |
| 253 | |
| 254 | public void release() { |
| 255 | synchronized (mImplLock) { |
| 256 | mReleased = true; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | @Override |
| 261 | public boolean setSurface(Surface surface, TvStreamConfig config) |
| 262 | throws RemoteException { |
| 263 | synchronized (mImplLock) { |
| 264 | if (mReleased) { |
| 265 | throw new IllegalStateException("Device already released."); |
| 266 | } |
| 267 | if (mInfo.getType() == TvInputHal.TYPE_HDMI) { |
| 268 | if (surface != null) { |
| 269 | // Set "Active Source" for HDMI. |
| 270 | // TODO(hdmi): mHdmiClient.deviceSelect(...); |
| 271 | mActiveHdmiSources.add(mInfo.getDeviceId()); |
| 272 | } else { |
| 273 | mActiveHdmiSources.remove(mInfo.getDeviceId()); |
| 274 | if (mActiveHdmiSources.size() == 0) { |
| 275 | // Tell HDMI that no HDMI source is active |
| 276 | // TODO(hdmi): mHdmiClient.portSelect(null); |
| 277 | } |
| 278 | } |
| 279 | } |
| 280 | return mHal.setSurface(mInfo.getDeviceId(), surface, config) == TvInputHal.SUCCESS; |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | @Override |
| 285 | public void setVolume(float volume) throws RemoteException { |
| 286 | synchronized (mImplLock) { |
| 287 | if (mReleased) { |
| 288 | throw new IllegalStateException("Device already released."); |
| 289 | } |
| 290 | } |
| 291 | // TODO |
| 292 | } |
| 293 | |
| 294 | @Override |
| 295 | public boolean dispatchKeyEventToHdmi(KeyEvent event) throws RemoteException { |
| 296 | synchronized (mImplLock) { |
| 297 | if (mReleased) { |
| 298 | throw new IllegalStateException("Device already released."); |
| 299 | } |
| 300 | } |
| 301 | if (mInfo.getType() != TvInputHal.TYPE_HDMI) { |
| 302 | return false; |
| 303 | } |
| 304 | // TODO(hdmi): mHdmiClient.sendKeyEvent(event); |
| 305 | return false; |
| 306 | } |
| 307 | } |
| 308 | } |