Camera2Client.cpp revision 3f73448090d99612c6d8f579e4164507d8848cc1
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#define LOG_TAG "Camera2Client" 18#define ATRACE_TAG ATRACE_TAG_CAMERA 19//#define LOG_NDEBUG 0 20 21#include <inttypes.h> 22#include <utils/Log.h> 23#include <utils/Trace.h> 24 25#include <cutils/properties.h> 26#include <gui/Surface.h> 27 28#include "api1/Camera2Client.h" 29 30#include "api1/client2/StreamingProcessor.h" 31#include "api1/client2/JpegProcessor.h" 32#include "api1/client2/CaptureSequencer.h" 33#include "api1/client2/CallbackProcessor.h" 34#include "api1/client2/ZslProcessor.h" 35#include "api1/client2/ZslProcessor3.h" 36 37#define ALOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__); 38#define ALOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__); 39 40namespace android { 41using namespace camera2; 42 43static int getCallingPid() { 44 return IPCThreadState::self()->getCallingPid(); 45} 46 47// Interface used by CameraService 48 49Camera2Client::Camera2Client(const sp<CameraService>& cameraService, 50 const sp<ICameraClient>& cameraClient, 51 const String16& clientPackageName, 52 int cameraId, 53 int cameraFacing, 54 int clientPid, 55 uid_t clientUid, 56 int servicePid, 57 int deviceVersion): 58 Camera2ClientBase(cameraService, cameraClient, clientPackageName, 59 cameraId, cameraFacing, clientPid, clientUid, servicePid), 60 mParameters(cameraId, cameraFacing), 61 mDeviceVersion(deviceVersion) 62{ 63 ATRACE_CALL(); 64 65 SharedParameters::Lock l(mParameters); 66 l.mParameters.state = Parameters::DISCONNECTED; 67} 68 69status_t Camera2Client::initialize(camera_module_t *module) 70{ 71 ATRACE_CALL(); 72 ALOGV("%s: Initializing client for camera %d", __FUNCTION__, mCameraId); 73 status_t res; 74 75 res = Camera2ClientBase::initialize(module); 76 if (res != OK) { 77 return res; 78 } 79 80 { 81 SharedParameters::Lock l(mParameters); 82 83 res = l.mParameters.initialize(&(mDevice->info())); 84 if (res != OK) { 85 ALOGE("%s: Camera %d: unable to build defaults: %s (%d)", 86 __FUNCTION__, mCameraId, strerror(-res), res); 87 return NO_INIT; 88 } 89 } 90 91 String8 threadName; 92 93 mStreamingProcessor = new StreamingProcessor(this); 94 threadName = String8::format("C2-%d-StreamProc", 95 mCameraId); 96 mStreamingProcessor->run(threadName.string()); 97 98 mFrameProcessor = new FrameProcessor(mDevice, this); 99 threadName = String8::format("C2-%d-FrameProc", 100 mCameraId); 101 mFrameProcessor->run(threadName.string()); 102 103 mCaptureSequencer = new CaptureSequencer(this); 104 threadName = String8::format("C2-%d-CaptureSeq", 105 mCameraId); 106 mCaptureSequencer->run(threadName.string()); 107 108 mJpegProcessor = new JpegProcessor(this, mCaptureSequencer); 109 threadName = String8::format("C2-%d-JpegProc", 110 mCameraId); 111 mJpegProcessor->run(threadName.string()); 112 113 switch (mDeviceVersion) { 114 case CAMERA_DEVICE_API_VERSION_2_0: { 115 sp<ZslProcessor> zslProc = 116 new ZslProcessor(this, mCaptureSequencer); 117 mZslProcessor = zslProc; 118 mZslProcessorThread = zslProc; 119 break; 120 } 121 case CAMERA_DEVICE_API_VERSION_3_0:{ 122 sp<ZslProcessor3> zslProc = 123 new ZslProcessor3(this, mCaptureSequencer); 124 mZslProcessor = zslProc; 125 mZslProcessorThread = zslProc; 126 break; 127 } 128 default: 129 break; 130 } 131 threadName = String8::format("C2-%d-ZslProc", 132 mCameraId); 133 mZslProcessorThread->run(threadName.string()); 134 135 mCallbackProcessor = new CallbackProcessor(this); 136 threadName = String8::format("C2-%d-CallbkProc", 137 mCameraId); 138 mCallbackProcessor->run(threadName.string()); 139 140 if (gLogLevel >= 1) { 141 SharedParameters::Lock l(mParameters); 142 ALOGD("%s: Default parameters converted from camera %d:", __FUNCTION__, 143 mCameraId); 144 ALOGD("%s", l.mParameters.paramsFlattened.string()); 145 } 146 147 return OK; 148} 149 150Camera2Client::~Camera2Client() { 151 ATRACE_CALL(); 152 ALOGV("~Camera2Client"); 153 154 mDestructionStarted = true; 155 156 disconnect(); 157 158 ALOGI("Camera %d: Closed", mCameraId); 159} 160 161status_t Camera2Client::dump(int fd, const Vector<String16>& args) { 162 String8 result; 163 result.appendFormat("Client2[%d] (%p) Client: %s PID: %d, dump:\n", 164 mCameraId, 165 getRemoteCallback()->asBinder().get(), 166 String8(mClientPackageName).string(), 167 mClientPid); 168 result.append(" State: "); 169#define CASE_APPEND_ENUM(x) case x: result.append(#x "\n"); break; 170 171 const Parameters& p = mParameters.unsafeAccess(); 172 173 result.append(Parameters::getStateName(p.state)); 174 175 result.append("\n Current parameters:\n"); 176 result.appendFormat(" Preview size: %d x %d\n", 177 p.previewWidth, p.previewHeight); 178 result.appendFormat(" Preview FPS range: %d - %d\n", 179 p.previewFpsRange[0], p.previewFpsRange[1]); 180 result.appendFormat(" Preview HAL pixel format: 0x%x\n", 181 p.previewFormat); 182 result.appendFormat(" Preview transform: %x\n", 183 p.previewTransform); 184 result.appendFormat(" Picture size: %d x %d\n", 185 p.pictureWidth, p.pictureHeight); 186 result.appendFormat(" Jpeg thumbnail size: %d x %d\n", 187 p.jpegThumbSize[0], p.jpegThumbSize[1]); 188 result.appendFormat(" Jpeg quality: %d, thumbnail quality: %d\n", 189 p.jpegQuality, p.jpegThumbQuality); 190 result.appendFormat(" Jpeg rotation: %d\n", p.jpegRotation); 191 result.appendFormat(" GPS tags %s\n", 192 p.gpsEnabled ? "enabled" : "disabled"); 193 if (p.gpsEnabled) { 194 result.appendFormat(" GPS lat x long x alt: %f x %f x %f\n", 195 p.gpsCoordinates[0], p.gpsCoordinates[1], 196 p.gpsCoordinates[2]); 197 result.appendFormat(" GPS timestamp: %" PRId64 "\n", 198 p.gpsTimestamp); 199 result.appendFormat(" GPS processing method: %s\n", 200 p.gpsProcessingMethod.string()); 201 } 202 203 result.append(" White balance mode: "); 204 switch (p.wbMode) { 205 CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_MODE_AUTO) 206 CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_MODE_INCANDESCENT) 207 CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_MODE_FLUORESCENT) 208 CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_MODE_WARM_FLUORESCENT) 209 CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_MODE_DAYLIGHT) 210 CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_MODE_CLOUDY_DAYLIGHT) 211 CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_MODE_TWILIGHT) 212 CASE_APPEND_ENUM(ANDROID_CONTROL_AWB_MODE_SHADE) 213 default: result.append("UNKNOWN\n"); 214 } 215 216 result.append(" Effect mode: "); 217 switch (p.effectMode) { 218 CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MODE_OFF) 219 CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MODE_MONO) 220 CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MODE_NEGATIVE) 221 CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MODE_SOLARIZE) 222 CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MODE_SEPIA) 223 CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MODE_POSTERIZE) 224 CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MODE_WHITEBOARD) 225 CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MODE_BLACKBOARD) 226 CASE_APPEND_ENUM(ANDROID_CONTROL_EFFECT_MODE_AQUA) 227 default: result.append("UNKNOWN\n"); 228 } 229 230 result.append(" Antibanding mode: "); 231 switch (p.antibandingMode) { 232 CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_MODE_AUTO) 233 CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_MODE_OFF) 234 CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_MODE_50HZ) 235 CASE_APPEND_ENUM(ANDROID_CONTROL_AE_ANTIBANDING_MODE_60HZ) 236 default: result.append("UNKNOWN\n"); 237 } 238 239 result.append(" Scene mode: "); 240 switch (p.sceneMode) { 241 case ANDROID_CONTROL_SCENE_MODE_DISABLED: 242 result.append("AUTO\n"); break; 243 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_ACTION) 244 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_PORTRAIT) 245 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_LANDSCAPE) 246 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_NIGHT) 247 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_NIGHT_PORTRAIT) 248 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_THEATRE) 249 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_BEACH) 250 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_SNOW) 251 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_SUNSET) 252 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_STEADYPHOTO) 253 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_FIREWORKS) 254 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_SPORTS) 255 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_PARTY) 256 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_CANDLELIGHT) 257 CASE_APPEND_ENUM(ANDROID_CONTROL_SCENE_MODE_BARCODE) 258 default: result.append("UNKNOWN\n"); 259 } 260 261 result.append(" Flash mode: "); 262 switch (p.flashMode) { 263 CASE_APPEND_ENUM(Parameters::FLASH_MODE_OFF) 264 CASE_APPEND_ENUM(Parameters::FLASH_MODE_AUTO) 265 CASE_APPEND_ENUM(Parameters::FLASH_MODE_ON) 266 CASE_APPEND_ENUM(Parameters::FLASH_MODE_TORCH) 267 CASE_APPEND_ENUM(Parameters::FLASH_MODE_RED_EYE) 268 CASE_APPEND_ENUM(Parameters::FLASH_MODE_INVALID) 269 default: result.append("UNKNOWN\n"); 270 } 271 272 result.append(" Focus mode: "); 273 switch (p.focusMode) { 274 CASE_APPEND_ENUM(Parameters::FOCUS_MODE_AUTO) 275 CASE_APPEND_ENUM(Parameters::FOCUS_MODE_MACRO) 276 CASE_APPEND_ENUM(Parameters::FOCUS_MODE_CONTINUOUS_VIDEO) 277 CASE_APPEND_ENUM(Parameters::FOCUS_MODE_CONTINUOUS_PICTURE) 278 CASE_APPEND_ENUM(Parameters::FOCUS_MODE_EDOF) 279 CASE_APPEND_ENUM(Parameters::FOCUS_MODE_INFINITY) 280 CASE_APPEND_ENUM(Parameters::FOCUS_MODE_FIXED) 281 CASE_APPEND_ENUM(Parameters::FOCUS_MODE_INVALID) 282 default: result.append("UNKNOWN\n"); 283 } 284 285 result.append(" Focus state: "); 286 switch (p.focusState) { 287 CASE_APPEND_ENUM(ANDROID_CONTROL_AF_STATE_INACTIVE) 288 CASE_APPEND_ENUM(ANDROID_CONTROL_AF_STATE_PASSIVE_SCAN) 289 CASE_APPEND_ENUM(ANDROID_CONTROL_AF_STATE_PASSIVE_FOCUSED) 290 CASE_APPEND_ENUM(ANDROID_CONTROL_AF_STATE_PASSIVE_UNFOCUSED) 291 CASE_APPEND_ENUM(ANDROID_CONTROL_AF_STATE_ACTIVE_SCAN) 292 CASE_APPEND_ENUM(ANDROID_CONTROL_AF_STATE_FOCUSED_LOCKED) 293 CASE_APPEND_ENUM(ANDROID_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED) 294 default: result.append("UNKNOWN\n"); 295 } 296 297 result.append(" Focusing areas:\n"); 298 for (size_t i = 0; i < p.focusingAreas.size(); i++) { 299 result.appendFormat(" [ (%d, %d, %d, %d), weight %d ]\n", 300 p.focusingAreas[i].left, 301 p.focusingAreas[i].top, 302 p.focusingAreas[i].right, 303 p.focusingAreas[i].bottom, 304 p.focusingAreas[i].weight); 305 } 306 307 result.appendFormat(" Exposure compensation index: %d\n", 308 p.exposureCompensation); 309 310 result.appendFormat(" AE lock %s, AWB lock %s\n", 311 p.autoExposureLock ? "enabled" : "disabled", 312 p.autoWhiteBalanceLock ? "enabled" : "disabled" ); 313 314 result.appendFormat(" Metering areas:\n"); 315 for (size_t i = 0; i < p.meteringAreas.size(); i++) { 316 result.appendFormat(" [ (%d, %d, %d, %d), weight %d ]\n", 317 p.meteringAreas[i].left, 318 p.meteringAreas[i].top, 319 p.meteringAreas[i].right, 320 p.meteringAreas[i].bottom, 321 p.meteringAreas[i].weight); 322 } 323 324 result.appendFormat(" Zoom index: %d\n", p.zoom); 325 result.appendFormat(" Video size: %d x %d\n", p.videoWidth, 326 p.videoHeight); 327 328 result.appendFormat(" Recording hint is %s\n", 329 p.recordingHint ? "set" : "not set"); 330 331 result.appendFormat(" Video stabilization is %s\n", 332 p.videoStabilization ? "enabled" : "disabled"); 333 334 result.appendFormat(" Selected still capture FPS range: %d - %d\n", 335 p.fastInfo.bestStillCaptureFpsRange[0], 336 p.fastInfo.bestStillCaptureFpsRange[1]); 337 338 result.append(" Current streams:\n"); 339 result.appendFormat(" Preview stream ID: %d\n", 340 getPreviewStreamId()); 341 result.appendFormat(" Capture stream ID: %d\n", 342 getCaptureStreamId()); 343 result.appendFormat(" Recording stream ID: %d\n", 344 getRecordingStreamId()); 345 346 result.append(" Quirks for this camera:\n"); 347 bool haveQuirk = false; 348 if (p.quirks.triggerAfWithAuto) { 349 result.appendFormat(" triggerAfWithAuto\n"); 350 haveQuirk = true; 351 } 352 if (p.quirks.useZslFormat) { 353 result.appendFormat(" useZslFormat\n"); 354 haveQuirk = true; 355 } 356 if (p.quirks.meteringCropRegion) { 357 result.appendFormat(" meteringCropRegion\n"); 358 haveQuirk = true; 359 } 360 if (p.quirks.partialResults) { 361 result.appendFormat(" usePartialResult\n"); 362 haveQuirk = true; 363 } 364 if (!haveQuirk) { 365 result.appendFormat(" none\n"); 366 } 367 368 write(fd, result.string(), result.size()); 369 370 mStreamingProcessor->dump(fd, args); 371 372 mCaptureSequencer->dump(fd, args); 373 374 mFrameProcessor->dump(fd, args); 375 376 mZslProcessor->dump(fd, args); 377 378 return dumpDevice(fd, args); 379#undef CASE_APPEND_ENUM 380} 381 382// ICamera interface 383 384void Camera2Client::disconnect() { 385 ATRACE_CALL(); 386 Mutex::Autolock icl(mBinderSerializationLock); 387 388 // Allow both client and the media server to disconnect at all times 389 int callingPid = getCallingPid(); 390 if (callingPid != mClientPid && callingPid != mServicePid) return; 391 392 if (mDevice == 0) return; 393 394 ALOGV("Camera %d: Shutting down", mCameraId); 395 396 /** 397 * disconnect() cannot call any methods that might need to promote a 398 * wp<Camera2Client>, since disconnect can be called from the destructor, at 399 * which point all such promotions will fail. 400 */ 401 402 stopPreviewL(); 403 404 { 405 SharedParameters::Lock l(mParameters); 406 if (l.mParameters.state == Parameters::DISCONNECTED) return; 407 l.mParameters.state = Parameters::DISCONNECTED; 408 } 409 410 mStreamingProcessor->requestExit(); 411 mFrameProcessor->requestExit(); 412 mCaptureSequencer->requestExit(); 413 mJpegProcessor->requestExit(); 414 mZslProcessorThread->requestExit(); 415 mCallbackProcessor->requestExit(); 416 417 ALOGV("Camera %d: Waiting for threads", mCameraId); 418 419 mStreamingProcessor->join(); 420 mFrameProcessor->join(); 421 mCaptureSequencer->join(); 422 mJpegProcessor->join(); 423 mZslProcessorThread->join(); 424 mCallbackProcessor->join(); 425 426 ALOGV("Camera %d: Deleting streams", mCameraId); 427 428 mStreamingProcessor->deletePreviewStream(); 429 mStreamingProcessor->deleteRecordingStream(); 430 mJpegProcessor->deleteStream(); 431 mCallbackProcessor->deleteStream(); 432 mZslProcessor->deleteStream(); 433 434 ALOGV("Camera %d: Disconnecting device", mCameraId); 435 436 mDevice->disconnect(); 437 438 mDevice.clear(); 439 440 CameraService::Client::disconnect(); 441} 442 443status_t Camera2Client::connect(const sp<ICameraClient>& client) { 444 ATRACE_CALL(); 445 ALOGV("%s: E", __FUNCTION__); 446 Mutex::Autolock icl(mBinderSerializationLock); 447 448 if (mClientPid != 0 && getCallingPid() != mClientPid) { 449 ALOGE("%s: Camera %d: Connection attempt from pid %d; " 450 "current locked to pid %d", __FUNCTION__, 451 mCameraId, getCallingPid(), mClientPid); 452 return BAD_VALUE; 453 } 454 455 mClientPid = getCallingPid(); 456 457 mRemoteCallback = client; 458 mSharedCameraCallbacks = client; 459 460 return OK; 461} 462 463status_t Camera2Client::lock() { 464 ATRACE_CALL(); 465 ALOGV("%s: E", __FUNCTION__); 466 Mutex::Autolock icl(mBinderSerializationLock); 467 ALOGV("%s: Camera %d: Lock call from pid %d; current client pid %d", 468 __FUNCTION__, mCameraId, getCallingPid(), mClientPid); 469 470 if (mClientPid == 0) { 471 mClientPid = getCallingPid(); 472 return OK; 473 } 474 475 if (mClientPid != getCallingPid()) { 476 ALOGE("%s: Camera %d: Lock call from pid %d; currently locked to pid %d", 477 __FUNCTION__, mCameraId, getCallingPid(), mClientPid); 478 return EBUSY; 479 } 480 481 return OK; 482} 483 484status_t Camera2Client::unlock() { 485 ATRACE_CALL(); 486 ALOGV("%s: E", __FUNCTION__); 487 Mutex::Autolock icl(mBinderSerializationLock); 488 ALOGV("%s: Camera %d: Unlock call from pid %d; current client pid %d", 489 __FUNCTION__, mCameraId, getCallingPid(), mClientPid); 490 491 if (mClientPid == getCallingPid()) { 492 SharedParameters::Lock l(mParameters); 493 if (l.mParameters.state == Parameters::RECORD || 494 l.mParameters.state == Parameters::VIDEO_SNAPSHOT) { 495 ALOGD("Not allowed to unlock camera during recording."); 496 return INVALID_OPERATION; 497 } 498 mClientPid = 0; 499 mRemoteCallback.clear(); 500 mSharedCameraCallbacks.clear(); 501 return OK; 502 } 503 504 ALOGE("%s: Camera %d: Unlock call from pid %d; currently locked to pid %d", 505 __FUNCTION__, mCameraId, getCallingPid(), mClientPid); 506 return EBUSY; 507} 508 509status_t Camera2Client::setPreviewTarget( 510 const sp<IGraphicBufferProducer>& bufferProducer) { 511 ATRACE_CALL(); 512 ALOGV("%s: E", __FUNCTION__); 513 Mutex::Autolock icl(mBinderSerializationLock); 514 status_t res; 515 if ( (res = checkPid(__FUNCTION__) ) != OK) return res; 516 517 sp<IBinder> binder; 518 sp<ANativeWindow> window; 519 if (bufferProducer != 0) { 520 binder = bufferProducer->asBinder(); 521 // Using controlledByApp flag to ensure that the buffer queue remains in 522 // async mode for the old camera API, where many applications depend 523 // on that behavior. 524 window = new Surface(bufferProducer, /*controlledByApp*/ true); 525 } 526 return setPreviewWindowL(binder, window); 527} 528 529status_t Camera2Client::setPreviewWindowL(const sp<IBinder>& binder, 530 sp<ANativeWindow> window) { 531 ATRACE_CALL(); 532 status_t res; 533 534 if (binder == mPreviewSurface) { 535 ALOGV("%s: Camera %d: New window is same as old window", 536 __FUNCTION__, mCameraId); 537 return NO_ERROR; 538 } 539 540 Parameters::State state; 541 { 542 SharedParameters::Lock l(mParameters); 543 state = l.mParameters.state; 544 } 545 switch (state) { 546 case Parameters::DISCONNECTED: 547 case Parameters::RECORD: 548 case Parameters::STILL_CAPTURE: 549 case Parameters::VIDEO_SNAPSHOT: 550 ALOGE("%s: Camera %d: Cannot set preview display while in state %s", 551 __FUNCTION__, mCameraId, 552 Parameters::getStateName(state)); 553 return INVALID_OPERATION; 554 case Parameters::STOPPED: 555 case Parameters::WAITING_FOR_PREVIEW_WINDOW: 556 // OK 557 break; 558 case Parameters::PREVIEW: 559 // Already running preview - need to stop and create a new stream 560 res = stopStream(); 561 if (res != OK) { 562 ALOGE("%s: Unable to stop preview to swap windows: %s (%d)", 563 __FUNCTION__, strerror(-res), res); 564 return res; 565 } 566 state = Parameters::WAITING_FOR_PREVIEW_WINDOW; 567 break; 568 } 569 570 mPreviewSurface = binder; 571 res = mStreamingProcessor->setPreviewWindow(window); 572 if (res != OK) { 573 ALOGE("%s: Unable to set new preview window: %s (%d)", 574 __FUNCTION__, strerror(-res), res); 575 return res; 576 } 577 578 if (state == Parameters::WAITING_FOR_PREVIEW_WINDOW) { 579 SharedParameters::Lock l(mParameters); 580 l.mParameters.state = state; 581 return startPreviewL(l.mParameters, false); 582 } 583 584 return OK; 585} 586 587void Camera2Client::setPreviewCallbackFlag(int flag) { 588 ATRACE_CALL(); 589 ALOGV("%s: Camera %d: Flag 0x%x", __FUNCTION__, mCameraId, flag); 590 Mutex::Autolock icl(mBinderSerializationLock); 591 592 if ( checkPid(__FUNCTION__) != OK) return; 593 594 SharedParameters::Lock l(mParameters); 595 setPreviewCallbackFlagL(l.mParameters, flag); 596} 597 598void Camera2Client::setPreviewCallbackFlagL(Parameters ¶ms, int flag) { 599 status_t res = OK; 600 601 switch(params.state) { 602 case Parameters::STOPPED: 603 case Parameters::WAITING_FOR_PREVIEW_WINDOW: 604 case Parameters::PREVIEW: 605 case Parameters::STILL_CAPTURE: 606 // OK 607 break; 608 default: 609 if (flag & CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK) { 610 ALOGE("%s: Camera %d: Can't use preview callbacks " 611 "in state %d", __FUNCTION__, mCameraId, params.state); 612 return; 613 } 614 } 615 616 if (flag & CAMERA_FRAME_CALLBACK_FLAG_ONE_SHOT_MASK) { 617 ALOGV("%s: setting oneshot", __FUNCTION__); 618 params.previewCallbackOneShot = true; 619 } 620 if (params.previewCallbackFlags != (uint32_t)flag) { 621 622 if (params.previewCallbackSurface && flag != CAMERA_FRAME_CALLBACK_FLAG_NOOP) { 623 // Disable any existing preview callback window when enabling 624 // preview callback flags 625 res = mCallbackProcessor->setCallbackWindow(NULL); 626 if (res != OK) { 627 ALOGE("%s: Camera %d: Unable to clear preview callback surface:" 628 " %s (%d)", __FUNCTION__, mCameraId, strerror(-res), res); 629 return; 630 } 631 params.previewCallbackSurface = false; 632 } 633 634 params.previewCallbackFlags = flag; 635 636 if (params.state == Parameters::PREVIEW) { 637 res = startPreviewL(params, true); 638 if (res != OK) { 639 ALOGE("%s: Camera %d: Unable to refresh request in state %s", 640 __FUNCTION__, mCameraId, 641 Parameters::getStateName(params.state)); 642 } 643 } 644 } 645} 646 647status_t Camera2Client::setPreviewCallbackTarget( 648 const sp<IGraphicBufferProducer>& callbackProducer) { 649 ATRACE_CALL(); 650 ALOGV("%s: E", __FUNCTION__); 651 Mutex::Autolock icl(mBinderSerializationLock); 652 status_t res; 653 if ( (res = checkPid(__FUNCTION__) ) != OK) return res; 654 655 sp<ANativeWindow> window; 656 if (callbackProducer != 0) { 657 window = new Surface(callbackProducer); 658 } 659 660 res = mCallbackProcessor->setCallbackWindow(window); 661 if (res != OK) { 662 ALOGE("%s: Camera %d: Unable to set preview callback surface: %s (%d)", 663 __FUNCTION__, mCameraId, strerror(-res), res); 664 return res; 665 } 666 667 SharedParameters::Lock l(mParameters); 668 669 if (window != NULL) { 670 // Disable traditional callbacks when a valid callback target is given 671 l.mParameters.previewCallbackFlags = CAMERA_FRAME_CALLBACK_FLAG_NOOP; 672 l.mParameters.previewCallbackOneShot = false; 673 l.mParameters.previewCallbackSurface = true; 674 } else { 675 // Disable callback target if given a NULL interface. 676 l.mParameters.previewCallbackSurface = false; 677 } 678 679 switch(l.mParameters.state) { 680 case Parameters::PREVIEW: 681 res = startPreviewL(l.mParameters, true); 682 break; 683 case Parameters::RECORD: 684 case Parameters::VIDEO_SNAPSHOT: 685 res = startRecordingL(l.mParameters, true); 686 break; 687 default: 688 break; 689 } 690 if (res != OK) { 691 ALOGE("%s: Camera %d: Unable to refresh request in state %s", 692 __FUNCTION__, mCameraId, 693 Parameters::getStateName(l.mParameters.state)); 694 } 695 696 return OK; 697} 698 699 700status_t Camera2Client::startPreview() { 701 ATRACE_CALL(); 702 ALOGV("%s: E", __FUNCTION__); 703 Mutex::Autolock icl(mBinderSerializationLock); 704 status_t res; 705 if ( (res = checkPid(__FUNCTION__) ) != OK) return res; 706 SharedParameters::Lock l(mParameters); 707 return startPreviewL(l.mParameters, false); 708} 709 710status_t Camera2Client::startPreviewL(Parameters ¶ms, bool restart) { 711 ATRACE_CALL(); 712 status_t res; 713 714 ALOGV("%s: state == %d, restart = %d", __FUNCTION__, params.state, restart); 715 716 if ( (params.state == Parameters::PREVIEW || 717 params.state == Parameters::RECORD || 718 params.state == Parameters::VIDEO_SNAPSHOT) 719 && !restart) { 720 // Succeed attempt to re-enter a streaming state 721 ALOGI("%s: Camera %d: Preview already active, ignoring restart", 722 __FUNCTION__, mCameraId); 723 return OK; 724 } 725 if (params.state > Parameters::PREVIEW && !restart) { 726 ALOGE("%s: Can't start preview in state %s", 727 __FUNCTION__, 728 Parameters::getStateName(params.state)); 729 return INVALID_OPERATION; 730 } 731 732 if (!mStreamingProcessor->haveValidPreviewWindow()) { 733 params.state = Parameters::WAITING_FOR_PREVIEW_WINDOW; 734 return OK; 735 } 736 params.state = Parameters::STOPPED; 737 int lastPreviewStreamId = mStreamingProcessor->getPreviewStreamId(); 738 739 res = mStreamingProcessor->updatePreviewStream(params); 740 if (res != OK) { 741 ALOGE("%s: Camera %d: Unable to update preview stream: %s (%d)", 742 __FUNCTION__, mCameraId, strerror(-res), res); 743 return res; 744 } 745 746 bool previewStreamChanged = mStreamingProcessor->getPreviewStreamId() != lastPreviewStreamId; 747 748 // We could wait to create the JPEG output stream until first actual use 749 // (first takePicture call). However, this would substantially increase the 750 // first capture latency on HAL3 devices, and potentially on some HAL2 751 // devices. So create it unconditionally at preview start. As a drawback, 752 // this increases gralloc memory consumption for applications that don't 753 // ever take a picture. 754 // TODO: Find a better compromise, though this likely would involve HAL 755 // changes. 756 res = updateProcessorStream(mJpegProcessor, params); 757 if (res != OK) { 758 ALOGE("%s: Camera %d: Can't pre-configure still image " 759 "stream: %s (%d)", 760 __FUNCTION__, mCameraId, strerror(-res), res); 761 return res; 762 } 763 764 Vector<int32_t> outputStreams; 765 bool callbacksEnabled = (params.previewCallbackFlags & 766 CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK) || 767 params.previewCallbackSurface; 768 769 if (callbacksEnabled) { 770 // Can't have recording stream hanging around when enabling callbacks, 771 // since it exceeds the max stream count on some devices. 772 if (mStreamingProcessor->getRecordingStreamId() != NO_STREAM) { 773 ALOGV("%s: Camera %d: Clearing out recording stream before " 774 "creating callback stream", __FUNCTION__, mCameraId); 775 res = mStreamingProcessor->stopStream(); 776 if (res != OK) { 777 ALOGE("%s: Camera %d: Can't stop streaming to delete " 778 "recording stream", __FUNCTION__, mCameraId); 779 return res; 780 } 781 res = mStreamingProcessor->deleteRecordingStream(); 782 if (res != OK) { 783 ALOGE("%s: Camera %d: Unable to delete recording stream before " 784 "enabling callbacks: %s (%d)", __FUNCTION__, mCameraId, 785 strerror(-res), res); 786 return res; 787 } 788 } 789 790 res = mCallbackProcessor->updateStream(params); 791 if (res != OK) { 792 ALOGE("%s: Camera %d: Unable to update callback stream: %s (%d)", 793 __FUNCTION__, mCameraId, strerror(-res), res); 794 return res; 795 } 796 outputStreams.push(getCallbackStreamId()); 797 } else if (previewStreamChanged && mCallbackProcessor->getStreamId() != NO_STREAM) { 798 /** 799 * Delete the unused callback stream when preview stream is changed and 800 * preview is not enabled. Don't need stop preview stream as preview is in 801 * STOPPED state now. 802 */ 803 ALOGV("%s: Camera %d: Delete unused preview callback stream.", __FUNCTION__, mCameraId); 804 res = mCallbackProcessor->deleteStream(); 805 if (res != OK) { 806 ALOGE("%s: Camera %d: Unable to delete callback stream %s (%d)", 807 __FUNCTION__, mCameraId, strerror(-res), res); 808 return res; 809 } 810 } 811 if (params.zslMode && !params.recordingHint) { 812 res = updateProcessorStream(mZslProcessor, params); 813 if (res != OK) { 814 ALOGE("%s: Camera %d: Unable to update ZSL stream: %s (%d)", 815 __FUNCTION__, mCameraId, strerror(-res), res); 816 return res; 817 } 818 outputStreams.push(getZslStreamId()); 819 } else { 820 mZslProcessor->deleteStream(); 821 } 822 823 outputStreams.push(getPreviewStreamId()); 824 825 if (!params.recordingHint) { 826 if (!restart) { 827 res = mStreamingProcessor->updatePreviewRequest(params); 828 if (res != OK) { 829 ALOGE("%s: Camera %d: Can't set up preview request: " 830 "%s (%d)", __FUNCTION__, mCameraId, 831 strerror(-res), res); 832 return res; 833 } 834 } 835 res = mStreamingProcessor->startStream(StreamingProcessor::PREVIEW, 836 outputStreams); 837 } else { 838 if (!restart) { 839 res = mStreamingProcessor->updateRecordingRequest(params); 840 if (res != OK) { 841 ALOGE("%s: Camera %d: Can't set up preview request with " 842 "record hint: %s (%d)", __FUNCTION__, mCameraId, 843 strerror(-res), res); 844 return res; 845 } 846 } 847 res = mStreamingProcessor->startStream(StreamingProcessor::RECORD, 848 outputStreams); 849 } 850 if (res != OK) { 851 ALOGE("%s: Camera %d: Unable to start streaming preview: %s (%d)", 852 __FUNCTION__, mCameraId, strerror(-res), res); 853 return res; 854 } 855 856 params.state = Parameters::PREVIEW; 857 return OK; 858} 859 860void Camera2Client::stopPreview() { 861 ATRACE_CALL(); 862 ALOGV("%s: E", __FUNCTION__); 863 Mutex::Autolock icl(mBinderSerializationLock); 864 status_t res; 865 if ( (res = checkPid(__FUNCTION__) ) != OK) return; 866 stopPreviewL(); 867} 868 869void Camera2Client::stopPreviewL() { 870 ATRACE_CALL(); 871 status_t res; 872 const nsecs_t kStopCaptureTimeout = 3000000000LL; // 3 seconds 873 Parameters::State state; 874 { 875 SharedParameters::Lock l(mParameters); 876 state = l.mParameters.state; 877 } 878 879 switch (state) { 880 case Parameters::DISCONNECTED: 881 // Nothing to do. 882 break; 883 case Parameters::STOPPED: 884 case Parameters::VIDEO_SNAPSHOT: 885 case Parameters::STILL_CAPTURE: 886 mCaptureSequencer->waitUntilIdle(kStopCaptureTimeout); 887 // no break 888 case Parameters::RECORD: 889 case Parameters::PREVIEW: 890 syncWithDevice(); 891 res = stopStream(); 892 if (res != OK) { 893 ALOGE("%s: Camera %d: Can't stop streaming: %s (%d)", 894 __FUNCTION__, mCameraId, strerror(-res), res); 895 } 896 res = mDevice->waitUntilDrained(); 897 if (res != OK) { 898 ALOGE("%s: Camera %d: Waiting to stop streaming failed: %s (%d)", 899 __FUNCTION__, mCameraId, strerror(-res), res); 900 } 901 // no break 902 case Parameters::WAITING_FOR_PREVIEW_WINDOW: { 903 SharedParameters::Lock l(mParameters); 904 l.mParameters.state = Parameters::STOPPED; 905 commandStopFaceDetectionL(l.mParameters); 906 break; 907 } 908 default: 909 ALOGE("%s: Camera %d: Unknown state %d", __FUNCTION__, mCameraId, 910 state); 911 } 912} 913 914bool Camera2Client::previewEnabled() { 915 ATRACE_CALL(); 916 Mutex::Autolock icl(mBinderSerializationLock); 917 status_t res; 918 if ( (res = checkPid(__FUNCTION__) ) != OK) return false; 919 920 SharedParameters::Lock l(mParameters); 921 return l.mParameters.state == Parameters::PREVIEW; 922} 923 924status_t Camera2Client::storeMetaDataInBuffers(bool enabled) { 925 ATRACE_CALL(); 926 Mutex::Autolock icl(mBinderSerializationLock); 927 status_t res; 928 if ( (res = checkPid(__FUNCTION__) ) != OK) return res; 929 930 SharedParameters::Lock l(mParameters); 931 switch (l.mParameters.state) { 932 case Parameters::RECORD: 933 case Parameters::VIDEO_SNAPSHOT: 934 ALOGE("%s: Camera %d: Can't be called in state %s", 935 __FUNCTION__, mCameraId, 936 Parameters::getStateName(l.mParameters.state)); 937 return INVALID_OPERATION; 938 default: 939 // OK 940 break; 941 } 942 943 l.mParameters.storeMetadataInBuffers = enabled; 944 945 return OK; 946} 947 948status_t Camera2Client::startRecording() { 949 ATRACE_CALL(); 950 ALOGV("%s: E", __FUNCTION__); 951 Mutex::Autolock icl(mBinderSerializationLock); 952 status_t res; 953 if ( (res = checkPid(__FUNCTION__) ) != OK) return res; 954 SharedParameters::Lock l(mParameters); 955 956 return startRecordingL(l.mParameters, false); 957} 958 959status_t Camera2Client::startRecordingL(Parameters ¶ms, bool restart) { 960 status_t res; 961 962 ALOGV("%s: state == %d, restart = %d", __FUNCTION__, params.state, restart); 963 964 switch (params.state) { 965 case Parameters::STOPPED: 966 res = startPreviewL(params, false); 967 if (res != OK) return res; 968 break; 969 case Parameters::PREVIEW: 970 // Ready to go 971 break; 972 case Parameters::RECORD: 973 case Parameters::VIDEO_SNAPSHOT: 974 // OK to call this when recording is already on, just skip unless 975 // we're looking to restart 976 if (!restart) return OK; 977 break; 978 default: 979 ALOGE("%s: Camera %d: Can't start recording in state %s", 980 __FUNCTION__, mCameraId, 981 Parameters::getStateName(params.state)); 982 return INVALID_OPERATION; 983 }; 984 985 if (!params.storeMetadataInBuffers) { 986 ALOGE("%s: Camera %d: Recording only supported in metadata mode, but " 987 "non-metadata recording mode requested!", __FUNCTION__, 988 mCameraId); 989 return INVALID_OPERATION; 990 } 991 992 if (!restart) { 993 mCameraService->playSound(CameraService::SOUND_RECORDING); 994 mStreamingProcessor->updateRecordingRequest(params); 995 if (res != OK) { 996 ALOGE("%s: Camera %d: Unable to update recording request: %s (%d)", 997 __FUNCTION__, mCameraId, strerror(-res), res); 998 return res; 999 } 1000 } 1001 1002 // Not all devices can support a preview callback stream and a recording 1003 // stream at the same time, so assume none of them can. 1004 if (mCallbackProcessor->getStreamId() != NO_STREAM) { 1005 ALOGV("%s: Camera %d: Clearing out callback stream before " 1006 "creating recording stream", __FUNCTION__, mCameraId); 1007 res = mStreamingProcessor->stopStream(); 1008 if (res != OK) { 1009 ALOGE("%s: Camera %d: Can't stop streaming to delete callback stream", 1010 __FUNCTION__, mCameraId); 1011 return res; 1012 } 1013 res = mCallbackProcessor->deleteStream(); 1014 if (res != OK) { 1015 ALOGE("%s: Camera %d: Unable to delete callback stream before " 1016 "record: %s (%d)", __FUNCTION__, mCameraId, 1017 strerror(-res), res); 1018 return res; 1019 } 1020 } 1021 // Disable callbacks if they're enabled; can't record and use callbacks, 1022 // and we can't fail record start without stagefright asserting. 1023 params.previewCallbackFlags = 0; 1024 1025 res = updateProcessorStream< 1026 StreamingProcessor, 1027 &StreamingProcessor::updateRecordingStream>(mStreamingProcessor, 1028 params); 1029 if (res != OK) { 1030 ALOGE("%s: Camera %d: Unable to update recording stream: %s (%d)", 1031 __FUNCTION__, mCameraId, strerror(-res), res); 1032 return res; 1033 } 1034 1035 Vector<int32_t> outputStreams; 1036 outputStreams.push(getPreviewStreamId()); 1037 outputStreams.push(getRecordingStreamId()); 1038 1039 res = mStreamingProcessor->startStream(StreamingProcessor::RECORD, 1040 outputStreams); 1041 if (res != OK) { 1042 ALOGE("%s: Camera %d: Unable to start recording stream: %s (%d)", 1043 __FUNCTION__, mCameraId, strerror(-res), res); 1044 return res; 1045 } 1046 1047 if (params.state < Parameters::RECORD) { 1048 params.state = Parameters::RECORD; 1049 } 1050 1051 return OK; 1052} 1053 1054void Camera2Client::stopRecording() { 1055 ATRACE_CALL(); 1056 ALOGV("%s: E", __FUNCTION__); 1057 Mutex::Autolock icl(mBinderSerializationLock); 1058 SharedParameters::Lock l(mParameters); 1059 1060 status_t res; 1061 if ( (res = checkPid(__FUNCTION__) ) != OK) return; 1062 1063 switch (l.mParameters.state) { 1064 case Parameters::RECORD: 1065 // OK to stop 1066 break; 1067 case Parameters::STOPPED: 1068 case Parameters::PREVIEW: 1069 case Parameters::STILL_CAPTURE: 1070 case Parameters::VIDEO_SNAPSHOT: 1071 default: 1072 ALOGE("%s: Camera %d: Can't stop recording in state %s", 1073 __FUNCTION__, mCameraId, 1074 Parameters::getStateName(l.mParameters.state)); 1075 return; 1076 }; 1077 1078 mCameraService->playSound(CameraService::SOUND_RECORDING); 1079 1080 res = startPreviewL(l.mParameters, true); 1081 if (res != OK) { 1082 ALOGE("%s: Camera %d: Unable to return to preview", 1083 __FUNCTION__, mCameraId); 1084 } 1085} 1086 1087bool Camera2Client::recordingEnabled() { 1088 ATRACE_CALL(); 1089 Mutex::Autolock icl(mBinderSerializationLock); 1090 1091 if ( checkPid(__FUNCTION__) != OK) return false; 1092 1093 return recordingEnabledL(); 1094} 1095 1096bool Camera2Client::recordingEnabledL() { 1097 ATRACE_CALL(); 1098 SharedParameters::Lock l(mParameters); 1099 1100 return (l.mParameters.state == Parameters::RECORD 1101 || l.mParameters.state == Parameters::VIDEO_SNAPSHOT); 1102} 1103 1104void Camera2Client::releaseRecordingFrame(const sp<IMemory>& mem) { 1105 ATRACE_CALL(); 1106 Mutex::Autolock icl(mBinderSerializationLock); 1107 if ( checkPid(__FUNCTION__) != OK) return; 1108 1109 mStreamingProcessor->releaseRecordingFrame(mem); 1110} 1111 1112status_t Camera2Client::autoFocus() { 1113 ATRACE_CALL(); 1114 Mutex::Autolock icl(mBinderSerializationLock); 1115 ALOGV("%s: Camera %d", __FUNCTION__, mCameraId); 1116 status_t res; 1117 if ( (res = checkPid(__FUNCTION__) ) != OK) return res; 1118 1119 int triggerId; 1120 bool notifyImmediately = false; 1121 bool notifySuccess = false; 1122 { 1123 SharedParameters::Lock l(mParameters); 1124 if (l.mParameters.state < Parameters::PREVIEW) { 1125 return INVALID_OPERATION; 1126 } 1127 1128 /** 1129 * If the camera does not support auto-focus, it is a no-op and 1130 * onAutoFocus(boolean, Camera) callback will be called immediately 1131 * with a fake value of success set to true. 1132 * 1133 * Similarly, if focus mode is set to INFINITY, there's no reason to 1134 * bother the HAL. 1135 */ 1136 if (l.mParameters.focusMode == Parameters::FOCUS_MODE_FIXED || 1137 l.mParameters.focusMode == Parameters::FOCUS_MODE_INFINITY) { 1138 notifyImmediately = true; 1139 notifySuccess = true; 1140 } 1141 /** 1142 * If we're in CAF mode, and AF has already been locked, just fire back 1143 * the callback right away; the HAL would not send a notification since 1144 * no state change would happen on a AF trigger. 1145 */ 1146 if ( (l.mParameters.focusMode == Parameters::FOCUS_MODE_CONTINUOUS_PICTURE || 1147 l.mParameters.focusMode == Parameters::FOCUS_MODE_CONTINUOUS_VIDEO) && 1148 l.mParameters.focusState == ANDROID_CONTROL_AF_STATE_FOCUSED_LOCKED ) { 1149 notifyImmediately = true; 1150 notifySuccess = true; 1151 } 1152 /** 1153 * Send immediate notification back to client 1154 */ 1155 if (notifyImmediately) { 1156 SharedCameraCallbacks::Lock l(mSharedCameraCallbacks); 1157 if (l.mRemoteCallback != 0) { 1158 l.mRemoteCallback->notifyCallback(CAMERA_MSG_FOCUS, 1159 notifySuccess ? 1 : 0, 0); 1160 } 1161 return OK; 1162 } 1163 /** 1164 * Handle quirk mode for AF in scene modes 1165 */ 1166 if (l.mParameters.quirks.triggerAfWithAuto && 1167 l.mParameters.sceneMode != ANDROID_CONTROL_SCENE_MODE_DISABLED && 1168 l.mParameters.focusMode != Parameters::FOCUS_MODE_AUTO && 1169 !l.mParameters.focusingAreas[0].isEmpty()) { 1170 ALOGV("%s: Quirk: Switching from focusMode %d to AUTO", 1171 __FUNCTION__, l.mParameters.focusMode); 1172 l.mParameters.shadowFocusMode = l.mParameters.focusMode; 1173 l.mParameters.focusMode = Parameters::FOCUS_MODE_AUTO; 1174 updateRequests(l.mParameters); 1175 } 1176 1177 l.mParameters.currentAfTriggerId = ++l.mParameters.afTriggerCounter; 1178 triggerId = l.mParameters.currentAfTriggerId; 1179 } 1180 ATRACE_ASYNC_BEGIN(kAutofocusLabel, triggerId); 1181 1182 syncWithDevice(); 1183 1184 mDevice->triggerAutofocus(triggerId); 1185 1186 return OK; 1187} 1188 1189status_t Camera2Client::cancelAutoFocus() { 1190 ATRACE_CALL(); 1191 Mutex::Autolock icl(mBinderSerializationLock); 1192 ALOGV("%s: Camera %d", __FUNCTION__, mCameraId); 1193 status_t res; 1194 if ( (res = checkPid(__FUNCTION__) ) != OK) return res; 1195 1196 int triggerId; 1197 { 1198 SharedParameters::Lock l(mParameters); 1199 // Canceling does nothing in FIXED or INFINITY modes 1200 if (l.mParameters.focusMode == Parameters::FOCUS_MODE_FIXED || 1201 l.mParameters.focusMode == Parameters::FOCUS_MODE_INFINITY) { 1202 return OK; 1203 } 1204 1205 // An active AF trigger is canceled 1206 if (l.mParameters.afTriggerCounter == l.mParameters.currentAfTriggerId) { 1207 ATRACE_ASYNC_END(kAutofocusLabel, l.mParameters.currentAfTriggerId); 1208 } 1209 1210 triggerId = ++l.mParameters.afTriggerCounter; 1211 1212 // When using triggerAfWithAuto quirk, may need to reset focus mode to 1213 // the real state at this point. No need to cancel explicitly if 1214 // changing the AF mode. 1215 if (l.mParameters.shadowFocusMode != Parameters::FOCUS_MODE_INVALID) { 1216 ALOGV("%s: Quirk: Restoring focus mode to %d", __FUNCTION__, 1217 l.mParameters.shadowFocusMode); 1218 l.mParameters.focusMode = l.mParameters.shadowFocusMode; 1219 l.mParameters.shadowFocusMode = Parameters::FOCUS_MODE_INVALID; 1220 updateRequests(l.mParameters); 1221 1222 return OK; 1223 } 1224 } 1225 syncWithDevice(); 1226 1227 mDevice->triggerCancelAutofocus(triggerId); 1228 1229 return OK; 1230} 1231 1232status_t Camera2Client::takePicture(int msgType) { 1233 ATRACE_CALL(); 1234 Mutex::Autolock icl(mBinderSerializationLock); 1235 status_t res; 1236 if ( (res = checkPid(__FUNCTION__) ) != OK) return res; 1237 1238 int takePictureCounter; 1239 { 1240 SharedParameters::Lock l(mParameters); 1241 switch (l.mParameters.state) { 1242 case Parameters::DISCONNECTED: 1243 case Parameters::STOPPED: 1244 case Parameters::WAITING_FOR_PREVIEW_WINDOW: 1245 ALOGE("%s: Camera %d: Cannot take picture without preview enabled", 1246 __FUNCTION__, mCameraId); 1247 return INVALID_OPERATION; 1248 case Parameters::PREVIEW: 1249 // Good to go for takePicture 1250 res = commandStopFaceDetectionL(l.mParameters); 1251 if (res != OK) { 1252 ALOGE("%s: Camera %d: Unable to stop face detection for still capture", 1253 __FUNCTION__, mCameraId); 1254 return res; 1255 } 1256 l.mParameters.state = Parameters::STILL_CAPTURE; 1257 break; 1258 case Parameters::RECORD: 1259 // Good to go for video snapshot 1260 l.mParameters.state = Parameters::VIDEO_SNAPSHOT; 1261 break; 1262 case Parameters::STILL_CAPTURE: 1263 case Parameters::VIDEO_SNAPSHOT: 1264 ALOGE("%s: Camera %d: Already taking a picture", 1265 __FUNCTION__, mCameraId); 1266 return INVALID_OPERATION; 1267 } 1268 1269 ALOGV("%s: Camera %d: Starting picture capture", __FUNCTION__, mCameraId); 1270 1271 res = updateProcessorStream(mJpegProcessor, l.mParameters); 1272 if (res != OK) { 1273 ALOGE("%s: Camera %d: Can't set up still image stream: %s (%d)", 1274 __FUNCTION__, mCameraId, strerror(-res), res); 1275 return res; 1276 } 1277 takePictureCounter = ++l.mParameters.takePictureCounter; 1278 } 1279 1280 ATRACE_ASYNC_BEGIN(kTakepictureLabel, takePictureCounter); 1281 1282 // Need HAL to have correct settings before (possibly) triggering precapture 1283 syncWithDevice(); 1284 1285 res = mCaptureSequencer->startCapture(msgType); 1286 if (res != OK) { 1287 ALOGE("%s: Camera %d: Unable to start capture: %s (%d)", 1288 __FUNCTION__, mCameraId, strerror(-res), res); 1289 } 1290 1291 return res; 1292} 1293 1294status_t Camera2Client::setParameters(const String8& params) { 1295 ATRACE_CALL(); 1296 ALOGV("%s: Camera %d", __FUNCTION__, mCameraId); 1297 Mutex::Autolock icl(mBinderSerializationLock); 1298 status_t res; 1299 if ( (res = checkPid(__FUNCTION__) ) != OK) return res; 1300 1301 SharedParameters::Lock l(mParameters); 1302 1303 res = l.mParameters.set(params); 1304 if (res != OK) return res; 1305 1306 res = updateRequests(l.mParameters); 1307 1308 return res; 1309} 1310 1311String8 Camera2Client::getParameters() const { 1312 ATRACE_CALL(); 1313 ALOGV("%s: Camera %d", __FUNCTION__, mCameraId); 1314 Mutex::Autolock icl(mBinderSerializationLock); 1315 if ( checkPid(__FUNCTION__) != OK) return String8(); 1316 1317 SharedParameters::ReadLock l(mParameters); 1318 1319 return l.mParameters.get(); 1320} 1321 1322status_t Camera2Client::sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) { 1323 ATRACE_CALL(); 1324 Mutex::Autolock icl(mBinderSerializationLock); 1325 status_t res; 1326 if ( (res = checkPid(__FUNCTION__) ) != OK) return res; 1327 1328 ALOGV("%s: Camera %d: Command %d (%d, %d)", __FUNCTION__, mCameraId, 1329 cmd, arg1, arg2); 1330 1331 switch (cmd) { 1332 case CAMERA_CMD_START_SMOOTH_ZOOM: 1333 return commandStartSmoothZoomL(); 1334 case CAMERA_CMD_STOP_SMOOTH_ZOOM: 1335 return commandStopSmoothZoomL(); 1336 case CAMERA_CMD_SET_DISPLAY_ORIENTATION: 1337 return commandSetDisplayOrientationL(arg1); 1338 case CAMERA_CMD_ENABLE_SHUTTER_SOUND: 1339 return commandEnableShutterSoundL(arg1 == 1); 1340 case CAMERA_CMD_PLAY_RECORDING_SOUND: 1341 return commandPlayRecordingSoundL(); 1342 case CAMERA_CMD_START_FACE_DETECTION: 1343 return commandStartFaceDetectionL(arg1); 1344 case CAMERA_CMD_STOP_FACE_DETECTION: { 1345 SharedParameters::Lock l(mParameters); 1346 return commandStopFaceDetectionL(l.mParameters); 1347 } 1348 case CAMERA_CMD_ENABLE_FOCUS_MOVE_MSG: 1349 return commandEnableFocusMoveMsgL(arg1 == 1); 1350 case CAMERA_CMD_PING: 1351 return commandPingL(); 1352 case CAMERA_CMD_SET_VIDEO_BUFFER_COUNT: 1353 return commandSetVideoBufferCountL(arg1); 1354 default: 1355 ALOGE("%s: Unknown command %d (arguments %d, %d)", 1356 __FUNCTION__, cmd, arg1, arg2); 1357 return BAD_VALUE; 1358 } 1359} 1360 1361status_t Camera2Client::commandStartSmoothZoomL() { 1362 ALOGE("%s: Unimplemented!", __FUNCTION__); 1363 return OK; 1364} 1365 1366status_t Camera2Client::commandStopSmoothZoomL() { 1367 ALOGE("%s: Unimplemented!", __FUNCTION__); 1368 return OK; 1369} 1370 1371status_t Camera2Client::commandSetDisplayOrientationL(int degrees) { 1372 int transform = Parameters::degToTransform(degrees, 1373 mCameraFacing == CAMERA_FACING_FRONT); 1374 if (transform == -1) { 1375 ALOGE("%s: Camera %d: Error setting %d as display orientation value", 1376 __FUNCTION__, mCameraId, degrees); 1377 return BAD_VALUE; 1378 } 1379 SharedParameters::Lock l(mParameters); 1380 if (transform != l.mParameters.previewTransform && 1381 getPreviewStreamId() != NO_STREAM) { 1382 mDevice->setStreamTransform(getPreviewStreamId(), transform); 1383 } 1384 l.mParameters.previewTransform = transform; 1385 return OK; 1386} 1387 1388status_t Camera2Client::commandEnableShutterSoundL(bool enable) { 1389 SharedParameters::Lock l(mParameters); 1390 if (enable) { 1391 l.mParameters.playShutterSound = true; 1392 return OK; 1393 } 1394 1395 // Disabling shutter sound may not be allowed. In that case only 1396 // allow the mediaserver process to disable the sound. 1397 char value[PROPERTY_VALUE_MAX]; 1398 property_get("ro.camera.sound.forced", value, "0"); 1399 if (strncmp(value, "0", 2) != 0) { 1400 // Disabling shutter sound is not allowed. Deny if the current 1401 // process is not mediaserver. 1402 if (getCallingPid() != getpid()) { 1403 ALOGE("Failed to disable shutter sound. Permission denied (pid %d)", 1404 getCallingPid()); 1405 return PERMISSION_DENIED; 1406 } 1407 } 1408 1409 l.mParameters.playShutterSound = false; 1410 return OK; 1411} 1412 1413status_t Camera2Client::commandPlayRecordingSoundL() { 1414 mCameraService->playSound(CameraService::SOUND_RECORDING); 1415 return OK; 1416} 1417 1418status_t Camera2Client::commandStartFaceDetectionL(int /*type*/) { 1419 ALOGV("%s: Camera %d: Starting face detection", 1420 __FUNCTION__, mCameraId); 1421 status_t res; 1422 SharedParameters::Lock l(mParameters); 1423 switch (l.mParameters.state) { 1424 case Parameters::DISCONNECTED: 1425 case Parameters::STOPPED: 1426 case Parameters::WAITING_FOR_PREVIEW_WINDOW: 1427 case Parameters::STILL_CAPTURE: 1428 ALOGE("%s: Camera %d: Cannot start face detection without preview active", 1429 __FUNCTION__, mCameraId); 1430 return INVALID_OPERATION; 1431 case Parameters::PREVIEW: 1432 case Parameters::RECORD: 1433 case Parameters::VIDEO_SNAPSHOT: 1434 // Good to go for starting face detect 1435 break; 1436 } 1437 // Ignoring type 1438 if (l.mParameters.fastInfo.bestFaceDetectMode == 1439 ANDROID_STATISTICS_FACE_DETECT_MODE_OFF) { 1440 ALOGE("%s: Camera %d: Face detection not supported", 1441 __FUNCTION__, mCameraId); 1442 return BAD_VALUE; 1443 } 1444 if (l.mParameters.enableFaceDetect) return OK; 1445 1446 l.mParameters.enableFaceDetect = true; 1447 1448 res = updateRequests(l.mParameters); 1449 1450 return res; 1451} 1452 1453status_t Camera2Client::commandStopFaceDetectionL(Parameters ¶ms) { 1454 status_t res = OK; 1455 ALOGV("%s: Camera %d: Stopping face detection", 1456 __FUNCTION__, mCameraId); 1457 1458 if (!params.enableFaceDetect) return OK; 1459 1460 params.enableFaceDetect = false; 1461 1462 if (params.state == Parameters::PREVIEW 1463 || params.state == Parameters::RECORD 1464 || params.state == Parameters::VIDEO_SNAPSHOT) { 1465 res = updateRequests(params); 1466 } 1467 1468 return res; 1469} 1470 1471status_t Camera2Client::commandEnableFocusMoveMsgL(bool enable) { 1472 SharedParameters::Lock l(mParameters); 1473 l.mParameters.enableFocusMoveMessages = enable; 1474 1475 return OK; 1476} 1477 1478status_t Camera2Client::commandPingL() { 1479 // Always ping back if access is proper and device is alive 1480 SharedParameters::Lock l(mParameters); 1481 if (l.mParameters.state != Parameters::DISCONNECTED) { 1482 return OK; 1483 } else { 1484 return NO_INIT; 1485 } 1486} 1487 1488status_t Camera2Client::commandSetVideoBufferCountL(size_t count) { 1489 if (recordingEnabledL()) { 1490 ALOGE("%s: Camera %d: Error setting video buffer count after " 1491 "recording was started", __FUNCTION__, mCameraId); 1492 return INVALID_OPERATION; 1493 } 1494 1495 return mStreamingProcessor->setRecordingBufferCount(count); 1496} 1497 1498/** Device-related methods */ 1499void Camera2Client::notifyAutoFocus(uint8_t newState, int triggerId) { 1500 ALOGV("%s: Autofocus state now %d, last trigger %d", 1501 __FUNCTION__, newState, triggerId); 1502 bool sendCompletedMessage = false; 1503 bool sendMovingMessage = false; 1504 1505 bool success = false; 1506 bool afInMotion = false; 1507 { 1508 SharedParameters::Lock l(mParameters); 1509 // Trace end of AF state 1510 char tmp[32]; 1511 if (l.mParameters.afStateCounter > 0) { 1512 camera_metadata_enum_snprint( 1513 ANDROID_CONTROL_AF_STATE, l.mParameters.focusState, tmp, sizeof(tmp)); 1514 ATRACE_ASYNC_END(tmp, l.mParameters.afStateCounter); 1515 } 1516 1517 // Update state 1518 l.mParameters.focusState = newState; 1519 l.mParameters.afStateCounter++; 1520 1521 // Trace start of AF state 1522 1523 camera_metadata_enum_snprint( 1524 ANDROID_CONTROL_AF_STATE, l.mParameters.focusState, tmp, sizeof(tmp)); 1525 ATRACE_ASYNC_BEGIN(tmp, l.mParameters.afStateCounter); 1526 1527 switch (l.mParameters.focusMode) { 1528 case Parameters::FOCUS_MODE_AUTO: 1529 case Parameters::FOCUS_MODE_MACRO: 1530 // Don't send notifications upstream if they're not for the current AF 1531 // trigger. For example, if cancel was called in between, or if we 1532 // already sent a notification about this AF call. 1533 if (triggerId != l.mParameters.currentAfTriggerId) break; 1534 switch (newState) { 1535 case ANDROID_CONTROL_AF_STATE_FOCUSED_LOCKED: 1536 success = true; 1537 // no break 1538 case ANDROID_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED: 1539 sendCompletedMessage = true; 1540 l.mParameters.currentAfTriggerId = -1; 1541 break; 1542 case ANDROID_CONTROL_AF_STATE_ACTIVE_SCAN: 1543 // Just starting focusing, ignore 1544 break; 1545 case ANDROID_CONTROL_AF_STATE_INACTIVE: 1546 case ANDROID_CONTROL_AF_STATE_PASSIVE_SCAN: 1547 case ANDROID_CONTROL_AF_STATE_PASSIVE_FOCUSED: 1548 case ANDROID_CONTROL_AF_STATE_PASSIVE_UNFOCUSED: 1549 default: 1550 // Unexpected in AUTO/MACRO mode 1551 ALOGE("%s: Unexpected AF state transition in AUTO/MACRO mode: %d", 1552 __FUNCTION__, newState); 1553 break; 1554 } 1555 break; 1556 case Parameters::FOCUS_MODE_CONTINUOUS_VIDEO: 1557 case Parameters::FOCUS_MODE_CONTINUOUS_PICTURE: 1558 switch (newState) { 1559 case ANDROID_CONTROL_AF_STATE_FOCUSED_LOCKED: 1560 success = true; 1561 // no break 1562 case ANDROID_CONTROL_AF_STATE_NOT_FOCUSED_LOCKED: 1563 // Don't send notifications upstream if they're not for 1564 // the current AF trigger. For example, if cancel was 1565 // called in between, or if we already sent a 1566 // notification about this AF call. 1567 // Send both a 'AF done' callback and a 'AF move' callback 1568 if (triggerId != l.mParameters.currentAfTriggerId) break; 1569 sendCompletedMessage = true; 1570 afInMotion = false; 1571 if (l.mParameters.enableFocusMoveMessages && 1572 l.mParameters.afInMotion) { 1573 sendMovingMessage = true; 1574 } 1575 l.mParameters.currentAfTriggerId = -1; 1576 break; 1577 case ANDROID_CONTROL_AF_STATE_INACTIVE: 1578 // Cancel was called, or we switched state; care if 1579 // currently moving 1580 afInMotion = false; 1581 if (l.mParameters.enableFocusMoveMessages && 1582 l.mParameters.afInMotion) { 1583 sendMovingMessage = true; 1584 } 1585 break; 1586 case ANDROID_CONTROL_AF_STATE_PASSIVE_SCAN: 1587 // Start passive scan, inform upstream 1588 afInMotion = true; 1589 // no break 1590 case ANDROID_CONTROL_AF_STATE_PASSIVE_FOCUSED: 1591 case ANDROID_CONTROL_AF_STATE_PASSIVE_UNFOCUSED: 1592 // Stop passive scan, inform upstream 1593 if (l.mParameters.enableFocusMoveMessages) { 1594 sendMovingMessage = true; 1595 } 1596 break; 1597 } 1598 l.mParameters.afInMotion = afInMotion; 1599 break; 1600 case Parameters::FOCUS_MODE_EDOF: 1601 case Parameters::FOCUS_MODE_INFINITY: 1602 case Parameters::FOCUS_MODE_FIXED: 1603 default: 1604 if (newState != ANDROID_CONTROL_AF_STATE_INACTIVE) { 1605 ALOGE("%s: Unexpected AF state change %d " 1606 "(ID %d) in focus mode %d", 1607 __FUNCTION__, newState, triggerId, 1608 l.mParameters.focusMode); 1609 } 1610 } 1611 } 1612 if (sendMovingMessage) { 1613 SharedCameraCallbacks::Lock l(mSharedCameraCallbacks); 1614 if (l.mRemoteCallback != 0) { 1615 l.mRemoteCallback->notifyCallback(CAMERA_MSG_FOCUS_MOVE, 1616 afInMotion ? 1 : 0, 0); 1617 } 1618 } 1619 if (sendCompletedMessage) { 1620 ATRACE_ASYNC_END(kAutofocusLabel, triggerId); 1621 SharedCameraCallbacks::Lock l(mSharedCameraCallbacks); 1622 if (l.mRemoteCallback != 0) { 1623 l.mRemoteCallback->notifyCallback(CAMERA_MSG_FOCUS, 1624 success ? 1 : 0, 0); 1625 } 1626 } 1627} 1628 1629void Camera2Client::notifyAutoExposure(uint8_t newState, int triggerId) { 1630 ALOGV("%s: Autoexposure state now %d, last trigger %d", 1631 __FUNCTION__, newState, triggerId); 1632 mCaptureSequencer->notifyAutoExposure(newState, triggerId); 1633} 1634 1635camera2::SharedParameters& Camera2Client::getParameters() { 1636 return mParameters; 1637} 1638 1639int Camera2Client::getPreviewStreamId() const { 1640 return mStreamingProcessor->getPreviewStreamId(); 1641} 1642 1643int Camera2Client::getCaptureStreamId() const { 1644 return mJpegProcessor->getStreamId(); 1645} 1646 1647int Camera2Client::getCallbackStreamId() const { 1648 return mCallbackProcessor->getStreamId(); 1649} 1650 1651int Camera2Client::getRecordingStreamId() const { 1652 return mStreamingProcessor->getRecordingStreamId(); 1653} 1654 1655int Camera2Client::getZslStreamId() const { 1656 return mZslProcessor->getStreamId(); 1657} 1658 1659status_t Camera2Client::registerFrameListener(int32_t minId, int32_t maxId, 1660 wp<camera2::FrameProcessor::FilteredListener> listener) { 1661 return mFrameProcessor->registerListener(minId, maxId, listener); 1662} 1663 1664status_t Camera2Client::removeFrameListener(int32_t minId, int32_t maxId, 1665 wp<camera2::FrameProcessor::FilteredListener> listener) { 1666 return mFrameProcessor->removeListener(minId, maxId, listener); 1667} 1668 1669status_t Camera2Client::stopStream() { 1670 return mStreamingProcessor->stopStream(); 1671} 1672 1673const int32_t Camera2Client::kPreviewRequestIdStart; 1674const int32_t Camera2Client::kPreviewRequestIdEnd; 1675const int32_t Camera2Client::kRecordingRequestIdStart; 1676const int32_t Camera2Client::kRecordingRequestIdEnd; 1677const int32_t Camera2Client::kCaptureRequestIdStart; 1678const int32_t Camera2Client::kCaptureRequestIdEnd; 1679 1680/** Utility methods */ 1681 1682status_t Camera2Client::updateRequests(Parameters ¶ms) { 1683 status_t res; 1684 1685 ALOGV("%s: Camera %d: state = %d", __FUNCTION__, getCameraId(), params.state); 1686 1687 res = mStreamingProcessor->incrementStreamingIds(); 1688 if (res != OK) { 1689 ALOGE("%s: Camera %d: Unable to increment request IDs: %s (%d)", 1690 __FUNCTION__, mCameraId, strerror(-res), res); 1691 return res; 1692 } 1693 1694 res = mStreamingProcessor->updatePreviewRequest(params); 1695 if (res != OK) { 1696 ALOGE("%s: Camera %d: Unable to update preview request: %s (%d)", 1697 __FUNCTION__, mCameraId, strerror(-res), res); 1698 return res; 1699 } 1700 res = mStreamingProcessor->updateRecordingRequest(params); 1701 if (res != OK) { 1702 ALOGE("%s: Camera %d: Unable to update recording request: %s (%d)", 1703 __FUNCTION__, mCameraId, strerror(-res), res); 1704 return res; 1705 } 1706 1707 if (params.state == Parameters::PREVIEW) { 1708 res = startPreviewL(params, true); 1709 if (res != OK) { 1710 ALOGE("%s: Camera %d: Error streaming new preview request: %s (%d)", 1711 __FUNCTION__, mCameraId, strerror(-res), res); 1712 return res; 1713 } 1714 } else if (params.state == Parameters::RECORD || 1715 params.state == Parameters::VIDEO_SNAPSHOT) { 1716 res = startRecordingL(params, true); 1717 if (res != OK) { 1718 ALOGE("%s: Camera %d: Error streaming new record request: %s (%d)", 1719 __FUNCTION__, mCameraId, strerror(-res), res); 1720 return res; 1721 } 1722 } 1723 return res; 1724} 1725 1726 1727size_t Camera2Client::calculateBufferSize(int width, int height, 1728 int format, int stride) { 1729 switch (format) { 1730 case HAL_PIXEL_FORMAT_YCbCr_422_SP: // NV16 1731 return width * height * 2; 1732 case HAL_PIXEL_FORMAT_YCrCb_420_SP: // NV21 1733 return width * height * 3 / 2; 1734 case HAL_PIXEL_FORMAT_YCbCr_422_I: // YUY2 1735 return width * height * 2; 1736 case HAL_PIXEL_FORMAT_YV12: { // YV12 1737 size_t ySize = stride * height; 1738 size_t uvStride = (stride / 2 + 0xF) & ~0xF; 1739 size_t uvSize = uvStride * height / 2; 1740 return ySize + uvSize * 2; 1741 } 1742 case HAL_PIXEL_FORMAT_RGB_565: 1743 return width * height * 2; 1744 case HAL_PIXEL_FORMAT_RGBA_8888: 1745 return width * height * 4; 1746 case HAL_PIXEL_FORMAT_RAW_SENSOR: 1747 return width * height * 2; 1748 default: 1749 ALOGE("%s: Unknown preview format: %x", 1750 __FUNCTION__, format); 1751 return 0; 1752 } 1753} 1754 1755status_t Camera2Client::syncWithDevice() { 1756 ATRACE_CALL(); 1757 const nsecs_t kMaxSyncTimeout = 500000000; // 500 ms 1758 status_t res; 1759 1760 int32_t activeRequestId = mStreamingProcessor->getActiveRequestId(); 1761 if (activeRequestId == 0) return OK; 1762 1763 res = mDevice->waitUntilRequestReceived(activeRequestId, kMaxSyncTimeout); 1764 if (res == TIMED_OUT) { 1765 ALOGE("%s: Camera %d: Timed out waiting sync with HAL", 1766 __FUNCTION__, mCameraId); 1767 } else if (res != OK) { 1768 ALOGE("%s: Camera %d: Error while waiting to sync with HAL", 1769 __FUNCTION__, mCameraId); 1770 } 1771 return res; 1772} 1773 1774template <typename ProcessorT> 1775status_t Camera2Client::updateProcessorStream(sp<ProcessorT> processor, 1776 camera2::Parameters params) { 1777 // No default template arguments until C++11, so we need this overload 1778 return updateProcessorStream<ProcessorT, &ProcessorT::updateStream>( 1779 processor, params); 1780} 1781 1782template <typename ProcessorT, 1783 status_t (ProcessorT::*updateStreamF)(const Parameters &)> 1784status_t Camera2Client::updateProcessorStream(sp<ProcessorT> processor, 1785 Parameters params) { 1786 status_t res; 1787 1788 // Get raw pointer since sp<T> doesn't have operator->* 1789 ProcessorT *processorPtr = processor.get(); 1790 res = (processorPtr->*updateStreamF)(params); 1791 1792 /** 1793 * Can't update the stream if it's busy? 1794 * 1795 * Then we need to stop the device (by temporarily clearing the request 1796 * queue) and then try again. Resume streaming once we're done. 1797 */ 1798 if (res == -EBUSY) { 1799 ALOGV("%s: Camera %d: Pausing to update stream", __FUNCTION__, 1800 mCameraId); 1801 res = mStreamingProcessor->togglePauseStream(/*pause*/true); 1802 if (res != OK) { 1803 ALOGE("%s: Camera %d: Can't pause streaming: %s (%d)", 1804 __FUNCTION__, mCameraId, strerror(-res), res); 1805 } 1806 1807 res = mDevice->waitUntilDrained(); 1808 if (res != OK) { 1809 ALOGE("%s: Camera %d: Waiting to stop streaming failed: %s (%d)", 1810 __FUNCTION__, mCameraId, strerror(-res), res); 1811 } 1812 1813 res = (processorPtr->*updateStreamF)(params); 1814 if (res != OK) { 1815 ALOGE("%s: Camera %d: Failed to update processing stream " 1816 " despite having halted streaming first: %s (%d)", 1817 __FUNCTION__, mCameraId, strerror(-res), res); 1818 } 1819 1820 res = mStreamingProcessor->togglePauseStream(/*pause*/false); 1821 if (res != OK) { 1822 ALOGE("%s: Camera %d: Can't unpause streaming: %s (%d)", 1823 __FUNCTION__, mCameraId, strerror(-res), res); 1824 } 1825 } 1826 1827 return res; 1828} 1829 1830const char* Camera2Client::kAutofocusLabel = "autofocus"; 1831const char* Camera2Client::kTakepictureLabel = "take_picture"; 1832 1833} // namespace android 1834