Aurimas Liutikas | 88c7ff1 | 2023-08-10 12:42:26 -0700 | [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 | package android.hardware.camera2.impl; |
| 17 | |
| 18 | import android.hardware.camera2.CameraAccessException; |
| 19 | import android.hardware.camera2.CameraCaptureSession; |
| 20 | import android.hardware.camera2.CameraDevice; |
| 21 | import android.hardware.camera2.CameraOfflineSession; |
| 22 | import android.hardware.camera2.CameraOfflineSession.CameraOfflineSessionCallback; |
| 23 | import android.hardware.camera2.CaptureRequest; |
| 24 | import android.hardware.camera2.ICameraDeviceUser; |
| 25 | import android.hardware.camera2.params.OutputConfiguration; |
| 26 | import android.hardware.camera2.utils.TaskDrainer; |
| 27 | import android.hardware.camera2.utils.TaskSingleDrainer; |
| 28 | import android.os.Binder; |
| 29 | import android.os.Handler; |
| 30 | import android.os.SystemClock; |
| 31 | import android.util.Log; |
| 32 | import android.view.Surface; |
| 33 | |
| 34 | import java.util.Arrays; |
| 35 | import java.util.Collection; |
| 36 | import java.util.List; |
| 37 | import java.util.concurrent.Executor; |
| 38 | |
| 39 | import static android.hardware.camera2.impl.CameraDeviceImpl.checkHandler; |
| 40 | import static com.android.internal.util.Preconditions.*; |
| 41 | |
| 42 | public class CameraCaptureSessionImpl extends CameraCaptureSession |
| 43 | implements CameraCaptureSessionCore { |
| 44 | private static final String TAG = "CameraCaptureSession"; |
| 45 | private static final boolean DEBUG = false; |
| 46 | |
| 47 | /** Simple integer ID for session for debugging */ |
| 48 | private final int mId; |
| 49 | private final String mIdString; |
| 50 | |
| 51 | /** Input surface configured by native camera framework based on user-specified configuration */ |
| 52 | private final Surface mInput; |
| 53 | /** |
| 54 | * User-specified state callback, used for outgoing events; calls to this object will be |
| 55 | * automatically invoked via {@code mStateExecutor}. |
| 56 | */ |
| 57 | private final CameraCaptureSession.StateCallback mStateCallback; |
| 58 | /** User-specified state executor used for outgoing state callback events */ |
| 59 | private final Executor mStateExecutor; |
| 60 | |
| 61 | /** Internal camera device; used to translate calls into existing deprecated API */ |
| 62 | private final android.hardware.camera2.impl.CameraDeviceImpl mDeviceImpl; |
| 63 | /** Internal executor; used for all incoming events to preserve total order */ |
| 64 | private final Executor mDeviceExecutor; |
| 65 | |
| 66 | /** Drain Sequence IDs which have been queued but not yet finished with aborted/completed */ |
| 67 | private final TaskDrainer<Integer> mSequenceDrainer; |
| 68 | /** Drain state transitions from ACTIVE -> IDLE */ |
| 69 | private final TaskSingleDrainer mIdleDrainer; |
| 70 | /** Drain state transitions from BUSY -> IDLE */ |
| 71 | private final TaskSingleDrainer mAbortDrainer; |
| 72 | |
| 73 | /** This session is closed; all further calls will throw ISE */ |
| 74 | private boolean mClosed = false; |
| 75 | /** This session failed to be configured successfully */ |
| 76 | private final boolean mConfigureSuccess; |
| 77 | /** Do not unconfigure if this is set; another session will overwrite configuration */ |
| 78 | private boolean mSkipUnconfigure = false; |
| 79 | |
| 80 | /** Is the session in the process of aborting? Pay attention to BUSY->IDLE transitions. */ |
| 81 | private volatile boolean mAborting; |
| 82 | |
| 83 | /** |
| 84 | * Create a new CameraCaptureSession. |
| 85 | * |
| 86 | * <p>The camera device must already be in the {@code IDLE} state when this is invoked. |
| 87 | * There must be no pending actions |
| 88 | * (e.g. no pending captures, no repeating requests, no flush).</p> |
| 89 | */ |
| 90 | CameraCaptureSessionImpl(int id, Surface input, |
| 91 | CameraCaptureSession.StateCallback callback, Executor stateExecutor, |
| 92 | android.hardware.camera2.impl.CameraDeviceImpl deviceImpl, |
| 93 | Executor deviceStateExecutor, boolean configureSuccess) { |
| 94 | if (callback == null) { |
| 95 | throw new IllegalArgumentException("callback must not be null"); |
| 96 | } |
| 97 | |
| 98 | mId = id; |
| 99 | mIdString = String.format("Session %d: ", mId); |
| 100 | |
| 101 | mInput = input; |
| 102 | mStateExecutor = checkNotNull(stateExecutor, "stateExecutor must not be null"); |
| 103 | mStateCallback = createUserStateCallbackProxy(mStateExecutor, callback); |
| 104 | |
| 105 | mDeviceExecutor = checkNotNull(deviceStateExecutor, |
| 106 | "deviceStateExecutor must not be null"); |
| 107 | mDeviceImpl = checkNotNull(deviceImpl, "deviceImpl must not be null"); |
| 108 | |
| 109 | /* |
| 110 | * Use the same handler as the device's StateCallback for all the internal coming events |
| 111 | * |
| 112 | * This ensures total ordering between CameraDevice.StateCallback and |
| 113 | * CaptureCallback events. |
| 114 | */ |
| 115 | mSequenceDrainer = new TaskDrainer<>(mDeviceExecutor, new SequenceDrainListener(), |
| 116 | /*name*/"seq"); |
| 117 | mIdleDrainer = new TaskSingleDrainer(mDeviceExecutor, new IdleDrainListener(), |
| 118 | /*name*/"idle"); |
| 119 | mAbortDrainer = new TaskSingleDrainer(mDeviceExecutor, new AbortDrainListener(), |
| 120 | /*name*/"abort"); |
| 121 | |
| 122 | // CameraDevice should call configureOutputs and have it finish before constructing us |
| 123 | |
| 124 | if (configureSuccess) { |
| 125 | mStateCallback.onConfigured(this); |
| 126 | if (DEBUG) Log.v(TAG, mIdString + "Created session successfully"); |
| 127 | mConfigureSuccess = true; |
| 128 | } else { |
| 129 | mStateCallback.onConfigureFailed(this); |
| 130 | mClosed = true; // do not fire any other callbacks, do not allow any other work |
| 131 | Log.e(TAG, mIdString + "Failed to create capture session; configuration failed"); |
| 132 | mConfigureSuccess = false; |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | @Override |
| 137 | public CameraDevice getDevice() { |
| 138 | return mDeviceImpl; |
| 139 | } |
| 140 | |
| 141 | @Override |
| 142 | public void prepare(Surface surface) throws CameraAccessException { |
| 143 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 144 | checkNotClosed(); |
| 145 | mDeviceImpl.prepare(surface); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | @Override |
| 150 | public void prepare(int maxCount, Surface surface) throws CameraAccessException { |
| 151 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 152 | checkNotClosed(); |
| 153 | mDeviceImpl.prepare(maxCount, surface); |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | @Override |
| 158 | public void tearDown(Surface surface) throws CameraAccessException { |
| 159 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 160 | checkNotClosed(); |
| 161 | mDeviceImpl.tearDown(surface); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | @Override |
| 166 | public void finalizeOutputConfigurations( |
| 167 | List<OutputConfiguration> outputConfigs) throws CameraAccessException { |
| 168 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 169 | checkNotClosed(); |
| 170 | mDeviceImpl.finalizeOutputConfigs(outputConfigs); |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | @Override |
| 175 | public int capture(CaptureRequest request, CaptureCallback callback, |
| 176 | Handler handler) throws CameraAccessException { |
| 177 | checkCaptureRequest(request); |
| 178 | |
| 179 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 180 | checkNotClosed(); |
| 181 | |
| 182 | handler = checkHandler(handler, callback); |
| 183 | |
| 184 | if (DEBUG) { |
| 185 | Log.v(TAG, mIdString + "capture - request " + request + ", callback " + callback + |
| 186 | " handler " + handler); |
| 187 | } |
| 188 | |
| 189 | return addPendingSequence(mDeviceImpl.capture(request, |
| 190 | createCaptureCallbackProxy(handler, callback), mDeviceExecutor)); |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | @Override |
| 195 | public int captureSingleRequest(CaptureRequest request, Executor executor, |
| 196 | CaptureCallback callback) throws CameraAccessException { |
| 197 | if (executor == null) { |
| 198 | throw new IllegalArgumentException("executor must not be null"); |
| 199 | } else if (callback == null) { |
| 200 | throw new IllegalArgumentException("callback must not be null"); |
| 201 | } |
| 202 | checkCaptureRequest(request); |
| 203 | |
| 204 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 205 | checkNotClosed(); |
| 206 | |
| 207 | executor = CameraDeviceImpl.checkExecutor(executor, callback); |
| 208 | |
| 209 | if (DEBUG) { |
| 210 | Log.v(TAG, mIdString + "capture - request " + request + ", callback " + callback + |
| 211 | " executor " + executor); |
| 212 | } |
| 213 | |
| 214 | return addPendingSequence(mDeviceImpl.capture(request, |
| 215 | createCaptureCallbackProxyWithExecutor(executor, callback), mDeviceExecutor)); |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | private void checkCaptureRequest(CaptureRequest request) { |
| 220 | if (request == null) { |
| 221 | throw new IllegalArgumentException("request must not be null"); |
| 222 | } else if (request.isReprocess() && !isReprocessable()) { |
| 223 | throw new IllegalArgumentException("this capture session cannot handle reprocess " + |
| 224 | "requests"); |
| 225 | } else if (request.isReprocess() && request.getReprocessableSessionId() != mId) { |
| 226 | throw new IllegalArgumentException("capture request was created for another session"); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | @Override |
| 231 | public int captureBurst(List<CaptureRequest> requests, CaptureCallback callback, |
| 232 | Handler handler) throws CameraAccessException { |
| 233 | checkCaptureRequests(requests); |
| 234 | |
| 235 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 236 | checkNotClosed(); |
| 237 | |
| 238 | handler = checkHandler(handler, callback); |
| 239 | |
| 240 | if (DEBUG) { |
| 241 | CaptureRequest[] requestArray = requests.toArray(new CaptureRequest[0]); |
| 242 | Log.v(TAG, mIdString + "captureBurst - requests " + Arrays.toString(requestArray) + |
| 243 | ", callback " + callback + " handler " + handler); |
| 244 | } |
| 245 | |
| 246 | return addPendingSequence(mDeviceImpl.captureBurst(requests, |
| 247 | createCaptureCallbackProxy(handler, callback), mDeviceExecutor)); |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | @Override |
| 252 | public int captureBurstRequests(List<CaptureRequest> requests, Executor executor, |
| 253 | CaptureCallback callback) throws CameraAccessException { |
| 254 | if (executor == null) { |
| 255 | throw new IllegalArgumentException("executor must not be null"); |
| 256 | } else if (callback == null) { |
| 257 | throw new IllegalArgumentException("callback must not be null"); |
| 258 | } |
| 259 | checkCaptureRequests(requests); |
| 260 | |
| 261 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 262 | checkNotClosed(); |
| 263 | |
| 264 | executor = CameraDeviceImpl.checkExecutor(executor, callback); |
| 265 | |
| 266 | if (DEBUG) { |
| 267 | CaptureRequest[] requestArray = requests.toArray(new CaptureRequest[0]); |
| 268 | Log.v(TAG, mIdString + "captureBurst - requests " + Arrays.toString(requestArray) + |
| 269 | ", callback " + callback + " executor " + executor); |
| 270 | } |
| 271 | |
| 272 | return addPendingSequence(mDeviceImpl.captureBurst(requests, |
| 273 | createCaptureCallbackProxyWithExecutor(executor, callback), mDeviceExecutor)); |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | private void checkCaptureRequests(List<CaptureRequest> requests) { |
| 278 | if (requests == null) { |
| 279 | throw new IllegalArgumentException("Requests must not be null"); |
| 280 | } else if (requests.isEmpty()) { |
| 281 | throw new IllegalArgumentException("Requests must have at least one element"); |
| 282 | } |
| 283 | |
| 284 | for (CaptureRequest request : requests) { |
| 285 | if (request.isReprocess()) { |
| 286 | if (!isReprocessable()) { |
| 287 | throw new IllegalArgumentException("This capture session cannot handle " + |
| 288 | "reprocess requests"); |
| 289 | } else if (request.getReprocessableSessionId() != mId) { |
| 290 | throw new IllegalArgumentException("Capture request was created for another " + |
| 291 | "session"); |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | } |
| 297 | |
| 298 | @Override |
| 299 | public int setRepeatingRequest(CaptureRequest request, CaptureCallback callback, |
| 300 | Handler handler) throws CameraAccessException { |
| 301 | checkRepeatingRequest(request); |
| 302 | |
| 303 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 304 | checkNotClosed(); |
| 305 | |
| 306 | handler = checkHandler(handler, callback); |
| 307 | |
| 308 | if (DEBUG) { |
| 309 | Log.v(TAG, mIdString + "setRepeatingRequest - request " + request + ", callback " + |
| 310 | callback + " handler" + " " + handler); |
| 311 | } |
| 312 | |
| 313 | return addPendingSequence(mDeviceImpl.setRepeatingRequest(request, |
| 314 | createCaptureCallbackProxy(handler, callback), mDeviceExecutor)); |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | @Override |
| 319 | public int setSingleRepeatingRequest(CaptureRequest request, Executor executor, |
| 320 | CaptureCallback callback) throws CameraAccessException { |
| 321 | if (executor == null) { |
| 322 | throw new IllegalArgumentException("executor must not be null"); |
| 323 | } else if (callback == null) { |
| 324 | throw new IllegalArgumentException("callback must not be null"); |
| 325 | } |
| 326 | checkRepeatingRequest(request); |
| 327 | |
| 328 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 329 | checkNotClosed(); |
| 330 | |
| 331 | executor = CameraDeviceImpl.checkExecutor(executor, callback); |
| 332 | |
| 333 | if (DEBUG) { |
| 334 | Log.v(TAG, mIdString + "setRepeatingRequest - request " + request + ", callback " + |
| 335 | callback + " executor" + " " + executor); |
| 336 | } |
| 337 | |
| 338 | return addPendingSequence(mDeviceImpl.setRepeatingRequest(request, |
| 339 | createCaptureCallbackProxyWithExecutor(executor, callback), mDeviceExecutor)); |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | private void checkRepeatingRequest(CaptureRequest request) { |
| 344 | if (request == null) { |
| 345 | throw new IllegalArgumentException("request must not be null"); |
| 346 | } else if (request.isReprocess()) { |
| 347 | throw new IllegalArgumentException("repeating reprocess requests are not supported"); |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | @Override |
| 352 | public int setRepeatingBurst(List<CaptureRequest> requests, |
| 353 | CaptureCallback callback, Handler handler) throws CameraAccessException { |
| 354 | checkRepeatingRequests(requests); |
| 355 | |
| 356 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 357 | checkNotClosed(); |
| 358 | |
| 359 | handler = checkHandler(handler, callback); |
| 360 | |
| 361 | if (DEBUG) { |
| 362 | CaptureRequest[] requestArray = requests.toArray(new CaptureRequest[0]); |
| 363 | Log.v(TAG, mIdString + "setRepeatingBurst - requests " + |
| 364 | Arrays.toString(requestArray) + ", callback " + callback + |
| 365 | " handler" + "" + handler); |
| 366 | } |
| 367 | |
| 368 | return addPendingSequence(mDeviceImpl.setRepeatingBurst(requests, |
| 369 | createCaptureCallbackProxy(handler, callback), mDeviceExecutor)); |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | @Override |
| 374 | public int setRepeatingBurstRequests(List<CaptureRequest> requests, Executor executor, |
| 375 | CaptureCallback callback) throws CameraAccessException { |
| 376 | if (executor == null) { |
| 377 | throw new IllegalArgumentException("executor must not be null"); |
| 378 | } else if (callback == null) { |
| 379 | throw new IllegalArgumentException("callback must not be null"); |
| 380 | } |
| 381 | checkRepeatingRequests(requests); |
| 382 | |
| 383 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 384 | checkNotClosed(); |
| 385 | |
| 386 | executor = CameraDeviceImpl.checkExecutor(executor, callback); |
| 387 | |
| 388 | if (DEBUG) { |
| 389 | CaptureRequest[] requestArray = requests.toArray(new CaptureRequest[0]); |
| 390 | Log.v(TAG, mIdString + "setRepeatingBurst - requests " + |
| 391 | Arrays.toString(requestArray) + ", callback " + callback + |
| 392 | " executor" + "" + executor); |
| 393 | } |
| 394 | |
| 395 | return addPendingSequence(mDeviceImpl.setRepeatingBurst(requests, |
| 396 | createCaptureCallbackProxyWithExecutor(executor, callback), mDeviceExecutor)); |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | private void checkRepeatingRequests(List<CaptureRequest> requests) { |
| 401 | if (requests == null) { |
| 402 | throw new IllegalArgumentException("requests must not be null"); |
| 403 | } else if (requests.isEmpty()) { |
| 404 | throw new IllegalArgumentException("requests must have at least one element"); |
| 405 | } |
| 406 | |
| 407 | for (CaptureRequest r : requests) { |
| 408 | if (r.isReprocess()) { |
| 409 | throw new IllegalArgumentException("repeating reprocess burst requests are not " + |
| 410 | "supported"); |
| 411 | } |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | @Override |
| 416 | public void stopRepeating() throws CameraAccessException { |
| 417 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 418 | checkNotClosed(); |
| 419 | |
| 420 | if (DEBUG) { |
| 421 | Log.v(TAG, mIdString + "stopRepeating"); |
| 422 | } |
| 423 | |
| 424 | mDeviceImpl.stopRepeating(); |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | @Override |
| 429 | public void abortCaptures() throws CameraAccessException { |
| 430 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 431 | checkNotClosed(); |
| 432 | |
| 433 | if (DEBUG) { |
| 434 | Log.v(TAG, mIdString + "abortCaptures"); |
| 435 | } |
| 436 | |
| 437 | if (mAborting) { |
| 438 | Log.w(TAG, mIdString + "abortCaptures - Session is already aborting; doing nothing"); |
| 439 | return; |
| 440 | } |
| 441 | |
| 442 | mAborting = true; |
| 443 | mAbortDrainer.taskStarted(); |
| 444 | |
| 445 | mDeviceImpl.flush(); |
| 446 | // The next BUSY -> IDLE set of transitions will mark the end of the abort. |
| 447 | } |
| 448 | } |
| 449 | |
| 450 | @Override |
| 451 | public void updateOutputConfiguration(OutputConfiguration config) |
| 452 | throws CameraAccessException { |
| 453 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 454 | checkNotClosed(); |
| 455 | |
| 456 | if (DEBUG) { |
| 457 | Log.v(TAG, mIdString + "updateOutputConfiguration"); |
| 458 | } |
| 459 | |
| 460 | mDeviceImpl.updateOutputConfiguration(config); |
| 461 | } |
| 462 | } |
| 463 | |
| 464 | @Override |
| 465 | public CameraOfflineSession switchToOffline(Collection<Surface> offlineOutputs, |
| 466 | Executor executor, CameraOfflineSessionCallback listener) throws CameraAccessException { |
| 467 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 468 | checkNotClosed(); |
| 469 | } |
| 470 | return mDeviceImpl.switchToOffline(offlineOutputs, executor, listener); |
| 471 | } |
| 472 | |
| 473 | |
| 474 | @Override |
| 475 | public boolean supportsOfflineProcessing(Surface surface) { |
| 476 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 477 | checkNotClosed(); |
| 478 | } |
| 479 | return mDeviceImpl.supportsOfflineProcessing(surface); |
| 480 | } |
| 481 | |
| 482 | @Override |
| 483 | public boolean isReprocessable() { |
| 484 | return mInput != null; |
| 485 | } |
| 486 | |
| 487 | @Override |
| 488 | public Surface getInputSurface() { |
| 489 | return mInput; |
| 490 | } |
| 491 | |
| 492 | /** |
| 493 | * Replace this session with another session. |
| 494 | * |
| 495 | * <p>This is an optimization to avoid unconfiguring and then immediately having to |
| 496 | * reconfigure again.</p> |
| 497 | * |
| 498 | * <p>The semantics are identical to {@link #close}, except that unconfiguring will be skipped. |
| 499 | * <p> |
| 500 | * |
| 501 | * <p>After this call completes, the session will not call any further methods on the camera |
| 502 | * device.</p> |
| 503 | * |
| 504 | * @see CameraCaptureSession#close |
| 505 | */ |
| 506 | @Override |
| 507 | public void replaceSessionClose() { |
| 508 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 509 | /* |
| 510 | * In order for creating new sessions to be fast, the new session should be created |
| 511 | * before the old session is closed. |
| 512 | * |
| 513 | * Otherwise the old session will always unconfigure if there is no new session to |
| 514 | * replace it. |
| 515 | * |
| 516 | * Unconfiguring could add hundreds of milliseconds of delay. We could race and attempt |
| 517 | * to skip unconfigure if a new session is created before the captures are all drained, |
| 518 | * but this would introduce nondeterministic behavior. |
| 519 | */ |
| 520 | |
| 521 | if (DEBUG) Log.v(TAG, mIdString + "replaceSessionClose"); |
| 522 | |
| 523 | // Set up fast shutdown. Possible alternative paths: |
| 524 | // - This session is active, so close() below starts the shutdown drain |
| 525 | // - This session is mid-shutdown drain, and hasn't yet reached the idle drain listener. |
| 526 | // - This session is already closed and has executed the idle drain listener, and |
| 527 | // configureOutputsChecked(null) has already been called. |
| 528 | // |
| 529 | // Do not call configureOutputsChecked(null) going forward, since it would race with the |
| 530 | // configuration for the new session. If it was already called, then we don't care, |
| 531 | // since it won't get called again. |
| 532 | mSkipUnconfigure = true; |
| 533 | close(); |
| 534 | } |
| 535 | } |
| 536 | |
| 537 | @Override |
| 538 | public void closeWithoutDraining() { |
| 539 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 540 | if (mClosed) { |
| 541 | if (DEBUG) Log.v(TAG, mIdString + "close - reentering"); |
| 542 | return; |
| 543 | } |
| 544 | |
| 545 | if (DEBUG) Log.v(TAG, mIdString + "close - first time"); |
| 546 | |
| 547 | mClosed = true; |
| 548 | mStateCallback.onClosed(this); |
| 549 | } |
| 550 | |
| 551 | if (mInput != null) { |
| 552 | mInput.release(); |
| 553 | } |
| 554 | } |
| 555 | |
| 556 | @Override |
| 557 | public void close() { |
| 558 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 559 | if (mClosed) { |
| 560 | if (DEBUG) Log.v(TAG, mIdString + "close - reentering"); |
| 561 | return; |
| 562 | } |
| 563 | |
| 564 | if (DEBUG) Log.v(TAG, mIdString + "close - first time"); |
| 565 | |
| 566 | mClosed = true; |
| 567 | |
| 568 | /* |
| 569 | * Flush out any repeating request. Since camera is closed, no new requests |
| 570 | * can be queued, and eventually the entire request queue will be drained. |
| 571 | * |
| 572 | * If the camera device was already closed, short circuit and do nothing; since |
| 573 | * no more internal device callbacks will fire anyway. |
| 574 | * |
| 575 | * Otherwise, once stopRepeating is done, wait for camera to idle, then unconfigure |
| 576 | * the camera. Once that's done, fire #onClosed. |
| 577 | */ |
| 578 | try { |
| 579 | mDeviceImpl.stopRepeating(); |
| 580 | } catch (IllegalStateException e) { |
| 581 | // OK: Camera device may already be closed, nothing else to do |
| 582 | |
| 583 | // TODO: Fire onClosed anytime we get the device onClosed or the ISE? |
| 584 | // or just suppress the ISE only and rely onClosed. |
| 585 | // Also skip any of the draining work if this is already closed. |
| 586 | |
| 587 | // Short-circuit; queue callback immediately and return |
| 588 | mStateCallback.onClosed(this); |
| 589 | return; |
| 590 | } catch (CameraAccessException e) { |
| 591 | // OK: close does not throw checked exceptions. |
| 592 | Log.e(TAG, mIdString + "Exception while stopping repeating: ", e); |
| 593 | |
| 594 | // TODO: call onError instead of onClosed if this happens |
| 595 | } |
| 596 | |
| 597 | // If no sequences are pending, fire #onClosed immediately |
| 598 | mSequenceDrainer.beginDrain(); |
| 599 | } |
| 600 | if (mInput != null) { |
| 601 | mInput.release(); |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | /** |
| 606 | * Whether currently in mid-abort. |
| 607 | * |
| 608 | * <p>This is used by the implementation to set the capture failure |
| 609 | * reason, in lieu of more accurate error codes from the camera service. |
| 610 | * Unsynchronized to avoid deadlocks between simultaneous session->device, |
| 611 | * device->session calls.</p> |
| 612 | * |
| 613 | */ |
| 614 | @Override |
| 615 | public boolean isAborting() { |
| 616 | return mAborting; |
| 617 | } |
| 618 | |
| 619 | /** |
| 620 | * Post calls into a CameraCaptureSession.StateCallback to the user-specified {@code executor}. |
| 621 | */ |
| 622 | private StateCallback createUserStateCallbackProxy(Executor executor, StateCallback callback) { |
| 623 | return new CallbackProxies.SessionStateCallbackProxy(executor, callback); |
| 624 | } |
| 625 | |
| 626 | /** |
| 627 | * Forward callbacks that usually originate from |
| 628 | * CameraDeviceImpl.CameraDeviceCallbacks to the CameraCaptureSession.CaptureCallback. |
| 629 | * |
| 630 | * <p>When a capture sequence finishes, update the pending checked sequences set.</p> |
| 631 | */ |
| 632 | @SuppressWarnings("deprecation") |
| 633 | private android.hardware.camera2.impl.CaptureCallback createCaptureCallbackProxy( |
| 634 | Handler handler, CaptureCallback callback) { |
| 635 | final Executor executor = (callback != null) ? CameraDeviceImpl.checkAndWrapHandler( |
| 636 | handler) : null; |
| 637 | |
| 638 | return createCaptureCallbackProxyWithExecutor(executor, callback); |
| 639 | } |
| 640 | |
| 641 | private android.hardware.camera2.impl.CaptureCallback createCaptureCallbackProxyWithExecutor( |
| 642 | Executor executor, CaptureCallback callback) { |
| 643 | return new android.hardware.camera2.impl.CaptureCallback(executor, callback) { |
| 644 | @Override |
| 645 | public void onCaptureStarted(CameraDevice camera, |
| 646 | CaptureRequest request, long timestamp, long frameNumber) { |
| 647 | if ((callback != null) && (executor != null)) { |
| 648 | final long ident = Binder.clearCallingIdentity(); |
| 649 | try { |
| 650 | executor.execute(() -> callback.onCaptureStarted( |
| 651 | CameraCaptureSessionImpl.this, request, timestamp, |
| 652 | frameNumber)); |
| 653 | } finally { |
| 654 | Binder.restoreCallingIdentity(ident); |
| 655 | } |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | @Override |
| 660 | public void onReadoutStarted(CameraDevice camera, |
| 661 | CaptureRequest request, long timestamp, long frameNumber) { |
| 662 | if ((callback != null) && (executor != null)) { |
| 663 | final long ident = Binder.clearCallingIdentity(); |
| 664 | try { |
| 665 | executor.execute(() -> callback.onReadoutStarted( |
| 666 | CameraCaptureSessionImpl.this, request, timestamp, |
| 667 | frameNumber)); |
| 668 | } finally { |
| 669 | Binder.restoreCallingIdentity(ident); |
| 670 | } |
| 671 | } |
| 672 | } |
| 673 | |
| 674 | @Override |
| 675 | public void onCapturePartial(CameraDevice camera, |
| 676 | CaptureRequest request, android.hardware.camera2.CaptureResult result) { |
| 677 | if ((callback != null) && (executor != null)) { |
| 678 | final long ident = Binder.clearCallingIdentity(); |
| 679 | try { |
| 680 | executor.execute(() -> callback.onCapturePartial( |
| 681 | CameraCaptureSessionImpl.this, request, result)); |
| 682 | } finally { |
| 683 | Binder.restoreCallingIdentity(ident); |
| 684 | } |
| 685 | } |
| 686 | } |
| 687 | |
| 688 | @Override |
| 689 | public void onCaptureProgressed(CameraDevice camera, |
| 690 | CaptureRequest request, android.hardware.camera2.CaptureResult partialResult) { |
| 691 | if ((callback != null) && (executor != null)) { |
| 692 | final long ident = Binder.clearCallingIdentity(); |
| 693 | try { |
| 694 | executor.execute(() -> callback.onCaptureProgressed( |
| 695 | CameraCaptureSessionImpl.this, request, partialResult)); |
| 696 | } finally { |
| 697 | Binder.restoreCallingIdentity(ident); |
| 698 | } |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | @Override |
| 703 | public void onCaptureCompleted(CameraDevice camera, |
| 704 | CaptureRequest request, android.hardware.camera2.TotalCaptureResult result) { |
| 705 | if ((callback != null) && (executor != null)) { |
| 706 | final long ident = Binder.clearCallingIdentity(); |
| 707 | try { |
| 708 | executor.execute(() -> callback.onCaptureCompleted( |
| 709 | CameraCaptureSessionImpl.this, request, result)); |
| 710 | } finally { |
| 711 | Binder.restoreCallingIdentity(ident); |
| 712 | } |
| 713 | } |
| 714 | } |
| 715 | |
| 716 | @Override |
| 717 | public void onCaptureFailed(CameraDevice camera, |
| 718 | CaptureRequest request, android.hardware.camera2.CaptureFailure failure) { |
| 719 | if ((callback != null) && (executor != null)) { |
| 720 | final long ident = Binder.clearCallingIdentity(); |
| 721 | try { |
| 722 | executor.execute(() -> callback.onCaptureFailed( |
| 723 | CameraCaptureSessionImpl.this, request, failure)); |
| 724 | } finally { |
| 725 | Binder.restoreCallingIdentity(ident); |
| 726 | } |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | @Override |
| 731 | public void onCaptureSequenceCompleted(CameraDevice camera, |
| 732 | int sequenceId, long frameNumber) { |
| 733 | if ((callback != null) && (executor != null)) { |
| 734 | final long ident = Binder.clearCallingIdentity(); |
| 735 | try { |
| 736 | executor.execute(() -> callback.onCaptureSequenceCompleted( |
| 737 | CameraCaptureSessionImpl.this, sequenceId, frameNumber)); |
| 738 | } finally { |
| 739 | Binder.restoreCallingIdentity(ident); |
| 740 | } |
| 741 | } |
| 742 | finishPendingSequence(sequenceId); |
| 743 | } |
| 744 | |
| 745 | @Override |
| 746 | public void onCaptureSequenceAborted(CameraDevice camera, |
| 747 | int sequenceId) { |
| 748 | if ((callback != null) && (executor != null)) { |
| 749 | final long ident = Binder.clearCallingIdentity(); |
| 750 | try { |
| 751 | executor.execute(() -> callback.onCaptureSequenceAborted( |
| 752 | CameraCaptureSessionImpl.this, sequenceId)); |
| 753 | } finally { |
| 754 | Binder.restoreCallingIdentity(ident); |
| 755 | } |
| 756 | } |
| 757 | finishPendingSequence(sequenceId); |
| 758 | } |
| 759 | |
| 760 | @Override |
| 761 | public void onCaptureBufferLost(CameraDevice camera, |
| 762 | CaptureRequest request, Surface target, long frameNumber) { |
| 763 | if ((callback != null) && (executor != null)) { |
| 764 | final long ident = Binder.clearCallingIdentity(); |
| 765 | try { |
| 766 | executor.execute(() -> callback.onCaptureBufferLost( |
| 767 | CameraCaptureSessionImpl.this, request, target, frameNumber)); |
| 768 | } finally { |
| 769 | Binder.restoreCallingIdentity(ident); |
| 770 | } |
| 771 | } |
| 772 | } |
| 773 | }; |
| 774 | } |
| 775 | |
| 776 | /** |
| 777 | * |
| 778 | * Create an internal state callback, to be invoked on the mDeviceExecutor |
| 779 | * |
| 780 | * <p>It has a few behaviors: |
| 781 | * <ul> |
| 782 | * <li>Convert device state changes into session state changes. |
| 783 | * <li>Keep track of async tasks that the session began (idle, abort). |
| 784 | * </ul> |
| 785 | * </p> |
| 786 | * */ |
| 787 | @Override |
| 788 | public CameraDeviceImpl.StateCallbackKK getDeviceStateCallback() { |
| 789 | final CameraCaptureSession session = this; |
| 790 | final Object interfaceLock = mDeviceImpl.mInterfaceLock; |
| 791 | |
| 792 | |
| 793 | return new CameraDeviceImpl.StateCallbackKK() { |
| 794 | private boolean mBusy = false; |
| 795 | private boolean mActive = false; |
| 796 | |
| 797 | @Override |
| 798 | public void onOpened(CameraDevice camera) { |
| 799 | throw new AssertionError("Camera must already be open before creating a session"); |
| 800 | } |
| 801 | |
| 802 | @Override |
| 803 | public void onDisconnected(CameraDevice camera) { |
| 804 | if (DEBUG) Log.v(TAG, mIdString + "onDisconnected"); |
| 805 | close(); |
| 806 | } |
| 807 | |
| 808 | @Override |
| 809 | public void onError(CameraDevice camera, int error) { |
| 810 | // Should not be reached, handled by device code |
| 811 | Log.wtf(TAG, mIdString + "Got device error " + error); |
| 812 | } |
| 813 | |
| 814 | @Override |
| 815 | public void onActive(CameraDevice camera) { |
| 816 | mIdleDrainer.taskStarted(); |
| 817 | mActive = true; |
| 818 | |
| 819 | if (DEBUG) Log.v(TAG, mIdString + "onActive"); |
| 820 | mStateCallback.onActive(session); |
| 821 | } |
| 822 | |
| 823 | @Override |
| 824 | public void onIdle(CameraDevice camera) { |
| 825 | boolean isAborting; |
| 826 | if (DEBUG) Log.v(TAG, mIdString + "onIdle"); |
| 827 | |
| 828 | synchronized (interfaceLock) { |
| 829 | isAborting = mAborting; |
| 830 | } |
| 831 | |
| 832 | /* |
| 833 | * Check which states we transitioned through: |
| 834 | * |
| 835 | * (ACTIVE -> IDLE) |
| 836 | * (BUSY -> IDLE) |
| 837 | * |
| 838 | * Note that this is also legal: |
| 839 | * (ACTIVE -> BUSY -> IDLE) |
| 840 | * |
| 841 | * and mark those tasks as finished |
| 842 | */ |
| 843 | if (mBusy && isAborting) { |
| 844 | mAbortDrainer.taskFinished(); |
| 845 | |
| 846 | synchronized (interfaceLock) { |
| 847 | mAborting = false; |
| 848 | } |
| 849 | } |
| 850 | |
| 851 | if (mActive) { |
| 852 | mIdleDrainer.taskFinished(); |
| 853 | } |
| 854 | |
| 855 | mBusy = false; |
| 856 | mActive = false; |
| 857 | |
| 858 | mStateCallback.onReady(session); |
| 859 | } |
| 860 | |
| 861 | @Override |
| 862 | public void onBusy(CameraDevice camera) { |
| 863 | mBusy = true; |
| 864 | |
| 865 | // TODO: Queue captures during abort instead of failing them |
| 866 | // since the app won't be able to distinguish the two actives |
| 867 | // Don't signal the application since there's no clean mapping here |
| 868 | if (DEBUG) Log.v(TAG, mIdString + "onBusy"); |
| 869 | } |
| 870 | |
| 871 | @Override |
| 872 | public void onUnconfigured(CameraDevice camera) { |
| 873 | if (DEBUG) Log.v(TAG, mIdString + "onUnconfigured"); |
| 874 | } |
| 875 | |
| 876 | @Override |
| 877 | public void onRequestQueueEmpty() { |
| 878 | if (DEBUG) Log.v(TAG, mIdString + "onRequestQueueEmpty"); |
| 879 | mStateCallback.onCaptureQueueEmpty(session); |
| 880 | } |
| 881 | |
| 882 | @Override |
| 883 | public void onSurfacePrepared(Surface surface) { |
| 884 | if (DEBUG) Log.v(TAG, mIdString + "onSurfacePrepared"); |
| 885 | mStateCallback.onSurfacePrepared(session, surface); |
| 886 | } |
| 887 | }; |
| 888 | |
| 889 | } |
| 890 | |
| 891 | @Override |
| 892 | protected void finalize() throws Throwable { |
| 893 | try { |
| 894 | close(); |
| 895 | } finally { |
| 896 | super.finalize(); |
| 897 | } |
| 898 | } |
| 899 | |
| 900 | private void checkNotClosed() { |
| 901 | if (mClosed) { |
| 902 | throw new IllegalStateException( |
| 903 | "Session has been closed; further changes are illegal."); |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | /** |
| 908 | * Notify the session that a pending capture sequence has just been queued. |
| 909 | * |
| 910 | * <p>During a shutdown/close, the session waits until all pending sessions are finished |
| 911 | * before taking any further steps to shut down itself.</p> |
| 912 | * |
| 913 | * @see #finishPendingSequence |
| 914 | */ |
| 915 | private int addPendingSequence(int sequenceId) { |
| 916 | mSequenceDrainer.taskStarted(sequenceId); |
| 917 | return sequenceId; |
| 918 | } |
| 919 | |
| 920 | /** |
| 921 | * Notify the session that a pending capture sequence is now finished. |
| 922 | * |
| 923 | * <p>During a shutdown/close, once all pending sequences finish, it is safe to |
| 924 | * close the camera further by unconfiguring and then firing {@code onClosed}.</p> |
| 925 | */ |
| 926 | private void finishPendingSequence(int sequenceId) { |
| 927 | try { |
| 928 | mSequenceDrainer.taskFinished(sequenceId); |
| 929 | } catch (IllegalStateException e) { |
| 930 | // Workaround for b/27870771 |
| 931 | Log.w(TAG, e.getMessage()); |
| 932 | } |
| 933 | } |
| 934 | |
| 935 | private class SequenceDrainListener implements TaskDrainer.DrainListener { |
| 936 | @Override |
| 937 | public void onDrained() { |
| 938 | /* |
| 939 | * No repeating request is set; and the capture queue has fully drained. |
| 940 | * |
| 941 | * If no captures were queued to begin with, and an abort was queued, |
| 942 | * it's still possible to get another BUSY before the last IDLE. |
| 943 | * |
| 944 | * If the camera is already "IDLE" and no aborts are pending, |
| 945 | * then the drain immediately finishes. |
| 946 | */ |
| 947 | if (DEBUG) Log.v(TAG, mIdString + "onSequenceDrained"); |
| 948 | |
| 949 | |
| 950 | // Fire session close as soon as all sequences are complete. |
| 951 | // We may still need to unconfigure the device, but a new session might be created |
| 952 | // past this point, and notifications would then stop to this instance. |
| 953 | mStateCallback.onClosed(CameraCaptureSessionImpl.this); |
| 954 | |
| 955 | // Fast path: A new capture session has replaced this one; don't wait for abort/idle |
| 956 | // as we won't get state updates any more anyway. |
| 957 | if (mSkipUnconfigure) { |
| 958 | return; |
| 959 | } |
| 960 | |
| 961 | mAbortDrainer.beginDrain(); |
| 962 | } |
| 963 | } |
| 964 | |
| 965 | private class AbortDrainListener implements TaskDrainer.DrainListener { |
| 966 | @Override |
| 967 | public void onDrained() { |
| 968 | if (DEBUG) Log.v(TAG, mIdString + "onAbortDrained"); |
| 969 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 970 | /* |
| 971 | * Any queued aborts have now completed. |
| 972 | * |
| 973 | * It's now safe to wait to receive the final "IDLE" event, as the camera device |
| 974 | * will no longer again transition to "ACTIVE" by itself. |
| 975 | * |
| 976 | * If the camera is already "IDLE", then the drain immediately finishes. |
| 977 | */ |
| 978 | |
| 979 | // Fast path: A new capture session has replaced this one; don't wait for idle |
| 980 | // as we won't get state updates any more anyway. |
| 981 | if (mSkipUnconfigure) { |
| 982 | return; |
| 983 | } |
| 984 | mIdleDrainer.beginDrain(); |
| 985 | } |
| 986 | } |
| 987 | } |
| 988 | |
| 989 | private class IdleDrainListener implements TaskDrainer.DrainListener { |
| 990 | @Override |
| 991 | public void onDrained() { |
| 992 | if (DEBUG) Log.v(TAG, mIdString + "onIdleDrained"); |
| 993 | |
| 994 | // Take device lock before session lock so that we can call back into device |
| 995 | // without causing a deadlock |
| 996 | synchronized (mDeviceImpl.mInterfaceLock) { |
| 997 | /* |
| 998 | * The device is now IDLE, and has settled. It will not transition to |
| 999 | * ACTIVE or BUSY again by itself. |
| 1000 | * |
| 1001 | * It's now safe to unconfigure the outputs. |
| 1002 | * |
| 1003 | * This operation is idempotent; a session will not be closed twice. |
| 1004 | */ |
| 1005 | if (DEBUG) |
| 1006 | Log.v(TAG, mIdString + "Session drain complete, skip unconfigure: " + |
| 1007 | mSkipUnconfigure); |
| 1008 | |
| 1009 | // Fast path: A new capture session has replaced this one; don't wait for idle |
| 1010 | // as we won't get state updates any more anyway. |
| 1011 | if (mSkipUnconfigure) { |
| 1012 | return; |
| 1013 | } |
| 1014 | |
| 1015 | // Final slow path: unconfigure the camera, no session has replaced us and |
| 1016 | // everything is idle. |
| 1017 | try { |
| 1018 | // begin transition to unconfigured |
| 1019 | mDeviceImpl.configureStreamsChecked(/*inputConfig*/null, /*outputs*/null, |
| 1020 | /*operatingMode*/ ICameraDeviceUser.NORMAL_MODE, |
| 1021 | /*sessionParams*/ null, SystemClock.uptimeMillis()); |
| 1022 | } catch (CameraAccessException e) { |
| 1023 | // OK: do not throw checked exceptions. |
| 1024 | Log.e(TAG, mIdString + "Exception while unconfiguring outputs: ", e); |
| 1025 | |
| 1026 | // TODO: call onError instead of onClosed if this happens |
| 1027 | } catch (IllegalStateException e) { |
| 1028 | // Camera is already closed, so nothing left to do |
| 1029 | if (DEBUG) Log.v(TAG, mIdString + |
| 1030 | "Camera was already closed or busy, skipping unconfigure"); |
| 1031 | } |
| 1032 | } |
| 1033 | } |
| 1034 | } |
| 1035 | |
| 1036 | } |