Igor Murashkin | 7072550 | 2013-06-25 20:27:06 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2013 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 android.hardware.photography.impl; |
| 18 | |
| 19 | import android.hardware.photography.CameraMetadata; |
| 20 | import android.hardware.photography.CaptureResult; |
| 21 | import android.hardware.photography.ICameraDeviceUser; |
| 22 | import android.hardware.photography.ICameraDeviceCallbacks; |
| 23 | import android.hardware.photography.CameraAccessException; |
| 24 | import android.hardware.photography.CameraProperties; |
| 25 | import android.hardware.photography.CaptureRequest; |
| 26 | import android.hardware.photography.utils.CameraRuntimeException; |
| 27 | import android.os.Binder; |
| 28 | import android.os.IBinder; |
| 29 | import android.os.RemoteException; |
| 30 | import android.util.Log; |
| 31 | import android.view.Surface; |
| 32 | |
| 33 | import java.util.HashMap; |
| 34 | import java.util.List; |
| 35 | import java.util.Stack; |
| 36 | |
| 37 | /** |
| 38 | * HAL2.1+ implementation of CameraDevice Use CameraManager#open to instantiate |
| 39 | */ |
| 40 | public class CameraDevice implements android.hardware.photography.CameraDevice { |
| 41 | |
| 42 | private final String TAG; |
| 43 | |
| 44 | // TODO: guard every function with if (!mRemoteDevice) check (if it was closed) |
| 45 | private ICameraDeviceUser mRemoteDevice; |
| 46 | |
| 47 | private final Object mLock = new Object(); |
| 48 | private final CameraDeviceCallbacks mCallbacks = new CameraDeviceCallbacks(); |
| 49 | |
| 50 | // XX: Make this a WeakReference<CaptureListener> ? |
| 51 | private final HashMap<Integer, CaptureListenerHolder> mCaptureListenerMap = |
| 52 | new HashMap<Integer, CaptureListenerHolder>(); |
| 53 | |
| 54 | private final Stack<Integer> mRepeatingRequestIdStack = new Stack<Integer>(); |
| 55 | |
| 56 | private final String mCameraId; |
| 57 | |
| 58 | public CameraDevice(String cameraId) { |
| 59 | mCameraId = cameraId; |
| 60 | TAG = String.format("CameraDevice-%s-JV", mCameraId); |
| 61 | } |
| 62 | |
| 63 | public CameraDeviceCallbacks getCallbacks() { |
| 64 | return mCallbacks; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * @hide |
| 69 | */ |
| 70 | public void setRemoteDevice(ICameraDeviceUser remoteDevice) { |
| 71 | mRemoteDevice = remoteDevice; |
| 72 | } |
| 73 | |
| 74 | @Override |
| 75 | public CameraProperties getProperties() throws CameraAccessException { |
| 76 | // TODO |
| 77 | Log.v(TAG, "TODO: Implement getProperties"); |
| 78 | return new CameraProperties(); |
| 79 | } |
| 80 | |
| 81 | @Override |
| 82 | public void configureOutputs(List<Surface> outputs) throws CameraAccessException { |
| 83 | synchronized (mLock) { |
| 84 | // TODO: delete outputs that aren't in this list that were configured previously |
| 85 | for (Surface s : outputs) { |
| 86 | try { |
| 87 | // TODO: remove width,height,format since we are ignoring |
| 88 | // it. |
| 89 | mRemoteDevice.createStream(0, 0, 0, s); |
| 90 | } catch (CameraRuntimeException e) { |
| 91 | throw e.asChecked(); |
| 92 | } catch (RemoteException e) { |
| 93 | // impossible |
| 94 | return; |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | @Override |
| 101 | public CaptureRequest createCaptureRequest(int templateType) throws CameraAccessException { |
| 102 | |
| 103 | synchronized (mLock) { |
| 104 | |
| 105 | CameraMetadata templatedRequest = new CameraMetadata(); |
| 106 | |
| 107 | try { |
| 108 | mRemoteDevice.createDefaultRequest(templateType, /* out */templatedRequest); |
| 109 | } catch (CameraRuntimeException e) { |
| 110 | throw e.asChecked(); |
| 111 | } catch (RemoteException e) { |
| 112 | // impossible |
| 113 | return null; |
| 114 | } |
| 115 | |
| 116 | CaptureRequest request = new CaptureRequest(); |
| 117 | |
| 118 | // XX: could also change binder signature but that's more work than |
| 119 | // just using swap. |
| 120 | request.swap(templatedRequest); |
| 121 | |
| 122 | return request; |
| 123 | |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | @Override |
| 128 | public void capture(CaptureRequest request, CaptureListener listener) |
| 129 | throws CameraAccessException { |
| 130 | submitCaptureRequest(request, listener, /*streaming*/false); |
| 131 | } |
| 132 | |
| 133 | @Override |
| 134 | public void captureBurst(List<CaptureRequest> requests, CaptureListener listener) |
| 135 | throws CameraAccessException { |
| 136 | // TODO |
| 137 | throw new UnsupportedOperationException("Burst capture implemented yet"); |
| 138 | |
| 139 | } |
| 140 | |
| 141 | private void submitCaptureRequest(CaptureRequest request, CaptureListener listener, |
| 142 | boolean repeating) throws CameraAccessException { |
| 143 | |
| 144 | synchronized (mLock) { |
| 145 | |
| 146 | int requestId; |
| 147 | |
| 148 | try { |
| 149 | requestId = mRemoteDevice.submitRequest(request, repeating); |
| 150 | } catch (CameraRuntimeException e) { |
| 151 | throw e.asChecked(); |
| 152 | } catch (RemoteException e) { |
| 153 | // impossible |
| 154 | return; |
| 155 | } |
| 156 | |
| 157 | mCaptureListenerMap.put(requestId, new CaptureListenerHolder(listener, request, |
| 158 | repeating)); |
| 159 | |
| 160 | if (repeating) { |
| 161 | mRepeatingRequestIdStack.add(requestId); |
| 162 | } |
| 163 | |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | @Override |
| 168 | public void setRepeatingRequest(CaptureRequest request, CaptureListener listener) |
| 169 | throws CameraAccessException { |
| 170 | submitCaptureRequest(request, listener, /*streaming*/true); |
| 171 | } |
| 172 | |
| 173 | @Override |
| 174 | public void setRepeatingBurst(List<CaptureRequest> requests, CaptureListener listener) |
| 175 | throws CameraAccessException { |
| 176 | // TODO |
| 177 | throw new UnsupportedOperationException("Burst capture implemented yet"); |
| 178 | } |
| 179 | |
| 180 | @Override |
| 181 | public void stopRepeating() throws CameraAccessException { |
| 182 | |
| 183 | synchronized (mLock) { |
| 184 | |
| 185 | while (!mRepeatingRequestIdStack.isEmpty()) { |
| 186 | int requestId = mRepeatingRequestIdStack.pop(); |
| 187 | |
| 188 | try { |
| 189 | mRemoteDevice.cancelRequest(requestId); |
| 190 | } catch (CameraRuntimeException e) { |
| 191 | throw e.asChecked(); |
| 192 | } catch (RemoteException e) { |
| 193 | // impossible |
| 194 | return; |
| 195 | } |
| 196 | } |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | @Override |
| 201 | public void waitUntilIdle() throws CameraAccessException { |
| 202 | // TODO: implement |
| 203 | } |
| 204 | |
| 205 | @Override |
| 206 | public void setErrorListener(ErrorListener listener) { |
| 207 | // TODO Auto-generated method stub |
| 208 | |
| 209 | } |
| 210 | |
| 211 | @Override |
| 212 | public void close() throws Exception { |
| 213 | |
| 214 | // TODO: every method should throw IllegalStateException after close has been called |
| 215 | |
| 216 | synchronized (mLock) { |
| 217 | |
| 218 | try { |
| 219 | mRemoteDevice.disconnect(); |
| 220 | } catch (CameraRuntimeException e) { |
| 221 | throw e.asChecked(); |
| 222 | } catch (RemoteException e) { |
| 223 | // impossible |
| 224 | } |
| 225 | |
| 226 | mRemoteDevice = null; |
| 227 | |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | @Override |
| 232 | protected void finalize() throws Throwable { |
| 233 | try { |
| 234 | close(); |
| 235 | } catch (CameraRuntimeException e) { |
| 236 | Log.e(TAG, "Got error while trying to finalize, ignoring: " + e.getMessage()); |
| 237 | } |
| 238 | finally { |
| 239 | super.finalize(); |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | static class CaptureListenerHolder { |
| 244 | |
| 245 | private final boolean mRepeating; |
| 246 | private final CaptureListener mListener; |
| 247 | private final CaptureRequest mRequest; |
| 248 | |
| 249 | CaptureListenerHolder(CaptureListener listener, CaptureRequest request, boolean repeating) { |
| 250 | mRepeating = repeating; |
| 251 | mRequest = request; |
| 252 | mListener = listener; |
| 253 | } |
| 254 | |
| 255 | public boolean isRepeating() { |
| 256 | return mRepeating; |
| 257 | } |
| 258 | |
| 259 | public CaptureListener getListener() { |
| 260 | return mListener; |
| 261 | } |
| 262 | |
| 263 | public CaptureRequest getRequest() { |
| 264 | return mRequest; |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | // TODO: unit tests |
| 269 | public class CameraDeviceCallbacks extends Binder implements ICameraDeviceCallbacks { |
| 270 | |
| 271 | @Override |
| 272 | public IBinder asBinder() { |
| 273 | return this; |
| 274 | } |
| 275 | |
| 276 | // TODO: consider rename to onMessageReceived |
| 277 | @Override |
| 278 | public void notifyCallback(int msgType, int ext1, int ext2) throws RemoteException { |
| 279 | Log.d(TAG, "Got message " + msgType + " ext1: " + ext1 + " , ext2: " + ext2); |
| 280 | // TODO implement rest |
| 281 | } |
| 282 | |
| 283 | @Override |
| 284 | public void onResultReceived(int frameId, CameraMetadata result) throws RemoteException { |
| 285 | Log.d(TAG, "Received result for frameId " + frameId); |
| 286 | |
| 287 | CaptureListenerHolder holder; |
| 288 | |
| 289 | synchronized (mLock) { |
| 290 | // TODO: move this whole map into this class to make it more testable, |
| 291 | // exposing the methods necessary like subscribeToRequest, unsubscribe.. |
| 292 | // TODO: make class static class |
| 293 | |
| 294 | holder = CameraDevice.this.mCaptureListenerMap.get(frameId); |
| 295 | |
| 296 | // Clean up listener once we no longer expect to see it. |
| 297 | |
| 298 | // TODO: how to handle repeating listeners? |
| 299 | // we probably want cancelRequest to return # of times it already enqueued and |
| 300 | // keep a counter. |
| 301 | if (holder != null && !holder.isRepeating()) { |
| 302 | CameraDevice.this.mCaptureListenerMap.remove(frameId); |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | if (holder == null) { |
| 307 | Log.e(TAG, "Result had no listener holder associated with it, dropping result"); |
| 308 | return; |
| 309 | } |
| 310 | |
| 311 | CaptureResult resultAsCapture = new CaptureResult(); |
| 312 | resultAsCapture.swap(result); |
| 313 | |
| 314 | if (holder.getListener() != null) { |
| 315 | holder.getListener().onCaptureComplete(CameraDevice.this, holder.getRequest(), |
| 316 | resultAsCapture); |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | } |
| 321 | |
| 322 | } |