1 /* 2 * Copyright (C) 2015 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 #ifndef _ACAMERA_DEVICE_H 17 #define _ACAMERA_DEVICE_H 18 19 #include <memory> 20 #include <map> 21 #include <set> 22 #include <atomic> 23 #include <utility> 24 #include <vector> 25 #include <utils/StrongPointer.h> 26 #include <utils/Mutex.h> 27 #include <utils/String8.h> 28 #include <utils/List.h> 29 #include <utils/Vector.h> 30 31 #include <android/hardware/camera2/BnCameraDeviceCallbacks.h> 32 #include <android/hardware/camera2/ICameraDeviceUser.h> 33 #include <media/stagefright/foundation/ALooper.h> 34 #include <media/stagefright/foundation/AHandler.h> 35 #include <media/stagefright/foundation/AMessage.h> 36 #include <camera/CaptureResult.h> 37 #include <camera/camera2/OutputConfiguration.h> 38 #include <camera/camera2/SessionConfiguration.h> 39 #include <camera/camera2/CaptureRequest.h> 40 41 #include <camera/NdkCameraManager.h> 42 #include <camera/NdkCameraCaptureSession.h> 43 44 #include "ACameraMetadata.h" 45 46 namespace android { 47 namespace acam { 48 49 // Wrap ACameraCaptureFailure so it can be ref-counted 50 struct CameraCaptureFailure : public RefBase, public ACameraCaptureFailure {}; 51 52 // Wrap PhysicalCaptureResultInfo so that it can be ref-counted 53 struct ACameraPhysicalCaptureResultInfo: public RefBase { ACameraPhysicalCaptureResultInfoACameraPhysicalCaptureResultInfo54 ACameraPhysicalCaptureResultInfo(const std::vector<PhysicalCaptureResultInfo>& info, 55 int64_t frameNumber) : 56 mPhysicalResultInfo(info), mFrameNumber(frameNumber) {} 57 58 std::vector<PhysicalCaptureResultInfo> mPhysicalResultInfo; 59 int64_t mFrameNumber; 60 }; 61 62 class CameraDevice final : public RefBase { 63 public: 64 CameraDevice(const char* id, ACameraDevice_StateCallbacks* cb, 65 sp<ACameraMetadata> chars, 66 ACameraDevice* wrapper); 67 ~CameraDevice(); 68 getId()69 inline const char* getId() const { return mCameraId.string(); } 70 71 camera_status_t createCaptureRequest( 72 ACameraDevice_request_template templateId, 73 const ACameraIdList* physicalIdList, 74 ACaptureRequest** request) const; 75 76 camera_status_t createCaptureSession( 77 const ACaptureSessionOutputContainer* outputs, 78 const ACaptureRequest* sessionParameters, 79 const ACameraCaptureSession_stateCallbacks* callbacks, 80 /*out*/ACameraCaptureSession** session); 81 82 camera_status_t isSessionConfigurationSupported( 83 const ACaptureSessionOutputContainer* sessionOutputContainer) const; 84 85 // Callbacks from camera service 86 class ServiceCallback : public hardware::camera2::BnCameraDeviceCallbacks { 87 public: ServiceCallback(CameraDevice * device)88 explicit ServiceCallback(CameraDevice* device) : mDevice(device) {} 89 binder::Status onDeviceError(int32_t errorCode, 90 const CaptureResultExtras& resultExtras) override; 91 binder::Status onDeviceIdle() override; 92 binder::Status onCaptureStarted(const CaptureResultExtras& resultExtras, 93 int64_t timestamp) override; 94 binder::Status onResultReceived(const CameraMetadata& metadata, 95 const CaptureResultExtras& resultExtras, 96 const std::vector<PhysicalCaptureResultInfo>& physicalResultInfos) override; 97 binder::Status onPrepared(int streamId) override; 98 binder::Status onRequestQueueEmpty() override; 99 binder::Status onRepeatingRequestError(int64_t lastFrameNumber, 100 int32_t stoppedSequenceId) override; 101 private: 102 const wp<CameraDevice> mDevice; 103 }; getServiceCallback()104 inline sp<hardware::camera2::ICameraDeviceCallbacks> getServiceCallback() { 105 return mServiceCallback; 106 }; 107 108 // Camera device is only functional after remote being set 109 void setRemoteDevice(sp<hardware::camera2::ICameraDeviceUser> remote); 110 getWrapper()111 inline ACameraDevice* getWrapper() const { return mWrapper; }; 112 113 // Stop the looper thread and unregister the handler 114 void stopLooperAndDisconnect(); 115 116 private: 117 friend ACameraCaptureSession; 118 camera_status_t checkCameraClosedOrErrorLocked() const; 119 120 // device goes into fatal error state after this 121 void setCameraDeviceErrorLocked(camera_status_t error); 122 123 void disconnectLocked(sp<ACameraCaptureSession>& session); // disconnect from camera service 124 125 camera_status_t stopRepeatingLocked(); 126 127 camera_status_t flushLocked(ACameraCaptureSession*); 128 129 camera_status_t waitUntilIdleLocked(); 130 131 132 template<class T> 133 camera_status_t captureLocked(sp<ACameraCaptureSession> session, 134 /*optional*/T* cbs, 135 int numRequests, ACaptureRequest** requests, 136 /*optional*/int* captureSequenceId); 137 138 template<class T> 139 camera_status_t setRepeatingRequestsLocked(sp<ACameraCaptureSession> session, 140 /*optional*/T* cbs, 141 int numRequests, ACaptureRequest** requests, 142 /*optional*/int* captureSequenceId); 143 144 template<class T> 145 camera_status_t submitRequestsLocked( 146 sp<ACameraCaptureSession> session, 147 /*optional*/T* cbs, 148 int numRequests, ACaptureRequest** requests, 149 /*out*/int* captureSequenceId, 150 bool isRepeating); 151 152 camera_status_t updateOutputConfigurationLocked(ACaptureSessionOutput *output); 153 154 camera_status_t allocateCaptureRequest( 155 const ACaptureRequest* request, sp<CaptureRequest>& outReq); 156 157 static ACaptureRequest* allocateACaptureRequest(sp<CaptureRequest>& req, 158 const std::string& deviceId); 159 static void freeACaptureRequest(ACaptureRequest*); 160 161 // only For session to hold device lock 162 // Always grab device lock before grabbing session lock lockDeviceForSessionOps()163 void lockDeviceForSessionOps() const { mDeviceLock.lock(); }; unlockDevice()164 void unlockDevice() const { mDeviceLock.unlock(); }; 165 166 // For capture session to notify its end of life 167 void notifySessionEndOfLifeLocked(ACameraCaptureSession* session); 168 169 camera_status_t configureStreamsLocked(const ACaptureSessionOutputContainer* outputs, 170 const ACaptureRequest* sessionParameters, nsecs_t startTimeNs); 171 172 // Input message will be posted and cleared after this returns 173 void postSessionMsgAndCleanup(sp<AMessage>& msg); 174 175 static camera_status_t getIGBPfromAnw( 176 ANativeWindow* anw, sp<IGraphicBufferProducer>& out); 177 178 static camera_status_t getSurfaceFromANativeWindow( 179 ANativeWindow* anw, sp<Surface>& out); 180 181 mutable Mutex mDeviceLock; 182 const String8 mCameraId; // Camera ID 183 const ACameraDevice_StateCallbacks mAppCallbacks; // Callback to app 184 const sp<ACameraMetadata> mChars; // Camera characteristics 185 const sp<ServiceCallback> mServiceCallback; 186 ACameraDevice* mWrapper; 187 188 // stream id -> pair of (ANW* from application, OutputConfiguration used for camera service) 189 std::map<int, std::pair<ANativeWindow*, OutputConfiguration>> mConfiguredOutputs; 190 191 // TODO: maybe a bool will suffice for synchronous implementation? 192 std::atomic_bool mClosing; isClosed()193 inline bool isClosed() { return mClosing; } 194 195 bool mInError = false; 196 camera_status_t mError = ACAMERA_OK; 197 void onCaptureErrorLocked( 198 int32_t errorCode, 199 const CaptureResultExtras& resultExtras); 200 201 bool mIdle = true; 202 // This will avoid a busy session being deleted before it's back to idle state 203 sp<ACameraCaptureSession> mBusySession; 204 205 sp<hardware::camera2::ICameraDeviceUser> mRemote; 206 207 // Looper thread to handle callback to app 208 sp<ALooper> mCbLooper; 209 // definition of handler and message 210 enum { 211 // Device state callbacks 212 kWhatOnDisconnected, // onDisconnected 213 kWhatOnError, // onError 214 // Session state callbacks 215 kWhatSessionStateCb, // onReady, onActive 216 // Capture callbacks 217 kWhatCaptureStart, // onCaptureStarted 218 kWhatCaptureResult, // onCaptureProgressed, onCaptureCompleted 219 kWhatLogicalCaptureResult, // onLogicalCameraCaptureCompleted 220 kWhatCaptureFail, // onCaptureFailed 221 kWhatLogicalCaptureFail, // onLogicalCameraCaptureFailed 222 kWhatCaptureSeqEnd, // onCaptureSequenceCompleted 223 kWhatCaptureSeqAbort, // onCaptureSequenceAborted 224 kWhatCaptureBufferLost,// onCaptureBufferLost 225 // Internal cleanup 226 kWhatCleanUpSessions // Cleanup cached sp<ACameraCaptureSession> 227 }; 228 static const char* kContextKey; 229 static const char* kDeviceKey; 230 static const char* kErrorCodeKey; 231 static const char* kCallbackFpKey; 232 static const char* kSessionSpKey; 233 static const char* kCaptureRequestKey; 234 static const char* kTimeStampKey; 235 static const char* kCaptureResultKey; 236 static const char* kPhysicalCaptureResultKey; 237 static const char* kCaptureFailureKey; 238 static const char* kSequenceIdKey; 239 static const char* kFrameNumberKey; 240 static const char* kAnwKey; 241 static const char* kFailingPhysicalCameraId; 242 243 class CallbackHandler : public AHandler { 244 public: 245 explicit CallbackHandler(const char* id); 246 void onMessageReceived(const sp<AMessage> &msg) override; 247 248 private: 249 std::string mId; 250 // This handler will cache all capture session sp until kWhatCleanUpSessions 251 // is processed. This is used to guarantee the last session reference is always 252 // being removed in callback thread without holding camera device lock 253 Vector<sp<ACameraCaptureSession>> mCachedSessions; 254 }; 255 sp<CallbackHandler> mHandler; 256 257 /*********************************** 258 * Capture session related members * 259 ***********************************/ 260 // The current active session 261 wp<ACameraCaptureSession> mCurrentSession; 262 bool mFlushing = false; 263 264 int mNextSessionId = 0; 265 // TODO: might need another looper/handler to handle callbacks from service 266 267 static const int REQUEST_ID_NONE = -1; 268 int mRepeatingSequenceId = REQUEST_ID_NONE; 269 270 // sequence id -> last frame number holder map 271 struct RequestLastFrameNumberHolder { 272 int64_t lastFrameNumber; 273 // Whether the current sequence is completed (capture results are 274 // generated). May be set to true, but 275 // not removed from the map if not all inflight requests in the sequence 276 // have been completed. 277 bool isSequenceCompleted = false; 278 // Whether all inflight requests in the sequence are completed 279 // (capture results and buffers are generated). May be 280 // set to true, but not removed from the map yet if the capture results 281 // haven't been delivered to the app yet. 282 bool isInflightCompleted = false; RequestLastFrameNumberHolderRequestLastFrameNumberHolder283 RequestLastFrameNumberHolder(int64_t lastFN) : 284 lastFrameNumber(lastFN) {} 285 }; 286 std::map<int, RequestLastFrameNumberHolder> mSequenceLastFrameNumberMap; 287 288 struct CallbackHolder { 289 CallbackHolder(sp<ACameraCaptureSession> session, 290 const Vector<sp<CaptureRequest> >& requests, 291 bool isRepeating, 292 ACameraCaptureSession_captureCallbacks* cbs); 293 CallbackHolder(sp<ACameraCaptureSession> session, 294 const Vector<sp<CaptureRequest> >& requests, 295 bool isRepeating, 296 ACameraCaptureSession_logicalCamera_captureCallbacks* lcbs); 297 298 template <class T> initCaptureCallbacksCallbackHolder299 void initCaptureCallbacks(T* cbs) { 300 mContext = nullptr; 301 mOnCaptureStarted = nullptr; 302 mOnCaptureProgressed = nullptr; 303 mOnCaptureCompleted = nullptr; 304 mOnLogicalCameraCaptureCompleted = nullptr; 305 mOnLogicalCameraCaptureFailed = nullptr; 306 mOnCaptureFailed = nullptr; 307 mOnCaptureSequenceCompleted = nullptr; 308 mOnCaptureSequenceAborted = nullptr; 309 mOnCaptureBufferLost = nullptr; 310 if (cbs != nullptr) { 311 mContext = cbs->context; 312 mOnCaptureStarted = cbs->onCaptureStarted; 313 mOnCaptureProgressed = cbs->onCaptureProgressed; 314 mOnCaptureSequenceCompleted = cbs->onCaptureSequenceCompleted; 315 mOnCaptureSequenceAborted = cbs->onCaptureSequenceAborted; 316 mOnCaptureBufferLost = cbs->onCaptureBufferLost; 317 } 318 } 319 sp<ACameraCaptureSession> mSession; 320 Vector<sp<CaptureRequest> > mRequests; 321 const bool mIsRepeating; 322 const bool mIsLogicalCameraCallback; 323 324 void* mContext; 325 ACameraCaptureSession_captureCallback_start mOnCaptureStarted; 326 ACameraCaptureSession_captureCallback_result mOnCaptureProgressed; 327 ACameraCaptureSession_captureCallback_result mOnCaptureCompleted; 328 ACameraCaptureSession_logicalCamera_captureCallback_result mOnLogicalCameraCaptureCompleted; 329 ACameraCaptureSession_logicalCamera_captureCallback_failed mOnLogicalCameraCaptureFailed; 330 ACameraCaptureSession_captureCallback_failed mOnCaptureFailed; 331 ACameraCaptureSession_captureCallback_sequenceEnd mOnCaptureSequenceCompleted; 332 ACameraCaptureSession_captureCallback_sequenceAbort mOnCaptureSequenceAborted; 333 ACameraCaptureSession_captureCallback_bufferLost mOnCaptureBufferLost; 334 }; 335 // sequence id -> callbacks map 336 std::map<int, CallbackHolder> mSequenceCallbackMap; 337 338 static const int64_t NO_FRAMES_CAPTURED = -1; 339 class FrameNumberTracker { 340 public: 341 // TODO: Called in onResultReceived and onCaptureErrorLocked 342 void updateTracker(int64_t frameNumber, bool isError); getCompletedFrameNumber()343 inline int64_t getCompletedFrameNumber() { return mCompletedFrameNumber; } 344 private: 345 void update(); 346 void updateCompletedFrameNumber(int64_t frameNumber); 347 348 int64_t mCompletedFrameNumber = NO_FRAMES_CAPTURED; 349 List<int64_t> mSkippedFrameNumbers; 350 std::set<int64_t> mFutureErrorSet; 351 }; 352 FrameNumberTracker mFrameNumberTracker; 353 354 void checkRepeatingSequenceCompleteLocked(const int sequenceId, const int64_t lastFrameNumber); 355 void checkAndFireSequenceCompleteLocked(); 356 void removeCompletedCallbackHolderLocked(int64_t lastCompletedRegularFrameNumber); 357 void sendCaptureSequenceCompletedLocked(int sequenceId, int64_t lastFrameNumber); 358 359 // Misc variables 360 int32_t mShadingMapSize[2]; // const after constructor 361 int32_t mPartialResultCount; // const after constructor 362 std::vector<std::string> mPhysicalIds; // const after constructor 363 364 }; 365 366 } // namespace acam; 367 } // namespace android; 368 369 /** 370 * ACameraDevice opaque struct definition 371 * Leave outside of android namespace because it's NDK struct 372 */ 373 struct ACameraDevice { ACameraDeviceACameraDevice374 ACameraDevice(const char* id, ACameraDevice_StateCallbacks* cb, 375 sp<ACameraMetadata> chars) : 376 mDevice(new android::acam::CameraDevice(id, cb, chars, this)) {} 377 378 ~ACameraDevice(); 379 380 /******************* 381 * NDK public APIs * 382 *******************/ getIdACameraDevice383 inline const char* getId() const { return mDevice->getId(); } 384 createCaptureRequestACameraDevice385 camera_status_t createCaptureRequest( 386 ACameraDevice_request_template templateId, 387 const ACameraIdList* physicalCameraIdList, 388 ACaptureRequest** request) const { 389 return mDevice->createCaptureRequest(templateId, physicalCameraIdList, request); 390 } 391 createCaptureSessionACameraDevice392 camera_status_t createCaptureSession( 393 const ACaptureSessionOutputContainer* outputs, 394 const ACaptureRequest* sessionParameters, 395 const ACameraCaptureSession_stateCallbacks* callbacks, 396 /*out*/ACameraCaptureSession** session) { 397 return mDevice->createCaptureSession(outputs, sessionParameters, callbacks, session); 398 } 399 isSessionConfigurationSupportedACameraDevice400 camera_status_t isSessionConfigurationSupported( 401 const ACaptureSessionOutputContainer* sessionOutputContainer) const { 402 return mDevice->isSessionConfigurationSupported(sessionOutputContainer); 403 } 404 405 /*********************** 406 * Device interal APIs * 407 ***********************/ getServiceCallbackACameraDevice408 inline android::sp<android::hardware::camera2::ICameraDeviceCallbacks> getServiceCallback() { 409 return mDevice->getServiceCallback(); 410 }; 411 412 // Camera device is only functional after remote being set setRemoteDeviceACameraDevice413 inline void setRemoteDevice(android::sp<android::hardware::camera2::ICameraDeviceUser> remote) { 414 mDevice->setRemoteDevice(remote); 415 } 416 417 private: 418 android::sp<android::acam::CameraDevice> mDevice; 419 }; 420 421 #endif // _ACAMERA_DEVICE_H 422