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 <utils/StrongPointer.h> 25 #include <utils/Mutex.h> 26 #include <utils/String8.h> 27 #include <utils/List.h> 28 #include <utils/Vector.h> 29 30 #include <android/hardware/camera2/BnCameraDeviceCallbacks.h> 31 #include <android/hardware/camera2/ICameraDeviceUser.h> 32 #include <media/stagefright/foundation/ALooper.h> 33 #include <media/stagefright/foundation/AHandler.h> 34 #include <media/stagefright/foundation/AMessage.h> 35 #include <camera/CaptureResult.h> 36 #include <camera/camera2/OutputConfiguration.h> 37 #include <camera/camera2/CaptureRequest.h> 38 39 #include <camera/NdkCameraDevice.h> 40 #include "ACameraMetadata.h" 41 42 namespace android { 43 44 // Wrap ACameraCaptureFailure so it can be ref-counter 45 struct CameraCaptureFailure : public RefBase, public ACameraCaptureFailure {}; 46 47 class CameraDevice final : public RefBase { 48 public: 49 CameraDevice(const char* id, ACameraDevice_StateCallbacks* cb, 50 std::unique_ptr<ACameraMetadata> chars, 51 ACameraDevice* wrapper); 52 ~CameraDevice(); 53 54 inline const char* getId() const { return mCameraId.string(); } 55 56 camera_status_t createCaptureRequest( 57 ACameraDevice_request_template templateId, 58 ACaptureRequest** request) const; 59 60 camera_status_t createCaptureSession( 61 const ACaptureSessionOutputContainer* outputs, 62 const ACameraCaptureSession_stateCallbacks* callbacks, 63 /*out*/ACameraCaptureSession** session); 64 65 // Callbacks from camera service 66 class ServiceCallback : public hardware::camera2::BnCameraDeviceCallbacks { 67 public: 68 explicit ServiceCallback(CameraDevice* device) : mDevice(device) {} 69 binder::Status onDeviceError(int32_t errorCode, 70 const CaptureResultExtras& resultExtras) override; 71 binder::Status onDeviceIdle() override; 72 binder::Status onCaptureStarted(const CaptureResultExtras& resultExtras, 73 int64_t timestamp) override; 74 binder::Status onResultReceived(const CameraMetadata& metadata, 75 const CaptureResultExtras& resultExtras) override; 76 binder::Status onPrepared(int streamId) override; 77 binder::Status onRequestQueueEmpty() override; 78 binder::Status onRepeatingRequestError(int64_t lastFrameNumber, 79 int32_t stoppedSequenceId) override; 80 private: 81 const wp<CameraDevice> mDevice; 82 }; 83 inline sp<hardware::camera2::ICameraDeviceCallbacks> getServiceCallback() { 84 return mServiceCallback; 85 }; 86 87 // Camera device is only functional after remote being set 88 void setRemoteDevice(sp<hardware::camera2::ICameraDeviceUser> remote); 89 90 inline ACameraDevice* getWrapper() const { return mWrapper; }; 91 92 private: 93 friend ACameraCaptureSession; 94 camera_status_t checkCameraClosedOrErrorLocked() const; 95 96 // device goes into fatal error state after this 97 void setCameraDeviceErrorLocked(camera_status_t error); 98 99 void disconnectLocked(); // disconnect from camera service 100 101 camera_status_t stopRepeatingLocked(); 102 103 camera_status_t flushLocked(ACameraCaptureSession*); 104 105 camera_status_t waitUntilIdleLocked(); 106 107 108 camera_status_t captureLocked(sp<ACameraCaptureSession> session, 109 /*optional*/ACameraCaptureSession_captureCallbacks* cbs, 110 int numRequests, ACaptureRequest** requests, 111 /*optional*/int* captureSequenceId); 112 113 camera_status_t setRepeatingRequestsLocked(sp<ACameraCaptureSession> session, 114 /*optional*/ACameraCaptureSession_captureCallbacks* cbs, 115 int numRequests, ACaptureRequest** requests, 116 /*optional*/int* captureSequenceId); 117 118 camera_status_t submitRequestsLocked( 119 sp<ACameraCaptureSession> session, 120 /*optional*/ACameraCaptureSession_captureCallbacks* cbs, 121 int numRequests, ACaptureRequest** requests, 122 /*out*/int* captureSequenceId, 123 bool isRepeating); 124 125 static camera_status_t allocateCaptureRequest( 126 const ACaptureRequest* request, sp<CaptureRequest>& outReq); 127 128 static ACaptureRequest* allocateACaptureRequest(sp<CaptureRequest>& req); 129 static void freeACaptureRequest(ACaptureRequest*); 130 131 // only For session to hold device lock 132 // Always grab device lock before grabbing session lock 133 void lockDeviceForSessionOps() const { mDeviceLock.lock(); }; 134 void unlockDevice() const { mDeviceLock.unlock(); }; 135 136 // For capture session to notify its end of life 137 void notifySessionEndOfLifeLocked(ACameraCaptureSession* session); 138 139 camera_status_t configureStreamsLocked(const ACaptureSessionOutputContainer* outputs); 140 141 static camera_status_t getIGBPfromAnw( 142 ANativeWindow* anw, sp<IGraphicBufferProducer>& out); 143 144 static camera_status_t getSurfaceFromANativeWindow( 145 ANativeWindow* anw, sp<Surface>& out); 146 147 mutable Mutex mDeviceLock; 148 const String8 mCameraId; // Camera ID 149 const ACameraDevice_StateCallbacks mAppCallbacks; // Callback to app 150 const std::unique_ptr<ACameraMetadata> mChars; // Camera characteristics 151 const sp<ServiceCallback> mServiceCallback; 152 ACameraDevice* mWrapper; 153 154 // stream id -> pair of (ANW* from application, OutputConfiguration used for camera service) 155 std::map<int, std::pair<ANativeWindow*, OutputConfiguration>> mConfiguredOutputs; 156 157 // TODO: maybe a bool will suffice for synchronous implementation? 158 std::atomic_bool mClosing; 159 inline bool isClosed() { return mClosing; } 160 161 bool mInError = false; 162 camera_status_t mError = ACAMERA_OK; 163 void onCaptureErrorLocked( 164 int32_t errorCode, 165 const CaptureResultExtras& resultExtras); 166 167 bool mIdle = true; 168 // This will avoid a busy session being deleted before it's back to idle state 169 sp<ACameraCaptureSession> mBusySession; 170 171 sp<hardware::camera2::ICameraDeviceUser> mRemote; 172 173 // Looper thread to handle callback to app 174 sp<ALooper> mCbLooper; 175 // definition of handler and message 176 enum { 177 // Device state callbacks 178 kWhatOnDisconnected, // onDisconnected 179 kWhatOnError, // onError 180 // Session state callbacks 181 kWhatSessionStateCb, // onReady, onActive 182 // Capture callbacks 183 kWhatCaptureStart, // onCaptureStarted 184 kWhatCaptureResult, // onCaptureProgressed, onCaptureCompleted 185 kWhatCaptureFail, // onCaptureFailed 186 kWhatCaptureSeqEnd, // onCaptureSequenceCompleted 187 kWhatCaptureSeqAbort, // onCaptureSequenceAborted 188 kWhatCaptureBufferLost // onCaptureBufferLost 189 }; 190 static const char* kContextKey; 191 static const char* kDeviceKey; 192 static const char* kErrorCodeKey; 193 static const char* kCallbackFpKey; 194 static const char* kSessionSpKey; 195 static const char* kCaptureRequestKey; 196 static const char* kTimeStampKey; 197 static const char* kCaptureResultKey; 198 static const char* kCaptureFailureKey; 199 static const char* kSequenceIdKey; 200 static const char* kFrameNumberKey; 201 static const char* kAnwKey; 202 class CallbackHandler : public AHandler { 203 public: 204 CallbackHandler() {} 205 void onMessageReceived(const sp<AMessage> &msg) override; 206 }; 207 sp<CallbackHandler> mHandler; 208 209 /*********************************** 210 * Capture session related members * 211 ***********************************/ 212 // The current active session 213 ACameraCaptureSession* mCurrentSession = nullptr; 214 bool mFlushing = false; 215 216 int mNextSessionId = 0; 217 // TODO: might need another looper/handler to handle callbacks from service 218 219 static const int REQUEST_ID_NONE = -1; 220 int mRepeatingSequenceId = REQUEST_ID_NONE; 221 222 // sequence id -> last frame number map 223 std::map<int, int64_t> mSequenceLastFrameNumberMap; 224 225 struct CallbackHolder { 226 CallbackHolder(sp<ACameraCaptureSession> session, 227 const Vector<sp<CaptureRequest> >& requests, 228 bool isRepeating, 229 ACameraCaptureSession_captureCallbacks* cbs); 230 231 static ACameraCaptureSession_captureCallbacks fillCb( 232 ACameraCaptureSession_captureCallbacks* cbs) { 233 if (cbs != nullptr) { 234 return *cbs; 235 } 236 return { nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr }; 237 } 238 239 sp<ACameraCaptureSession> mSession; 240 Vector<sp<CaptureRequest> > mRequests; 241 const bool mIsRepeating; 242 ACameraCaptureSession_captureCallbacks mCallbacks; 243 }; 244 // sequence id -> callbacks map 245 std::map<int, CallbackHolder> mSequenceCallbackMap; 246 247 static const int64_t NO_FRAMES_CAPTURED = -1; 248 class FrameNumberTracker { 249 public: 250 // TODO: Called in onResultReceived and onCaptureErrorLocked 251 void updateTracker(int64_t frameNumber, bool isError); 252 inline int64_t getCompletedFrameNumber() { return mCompletedFrameNumber; } 253 private: 254 void update(); 255 void updateCompletedFrameNumber(int64_t frameNumber); 256 257 int64_t mCompletedFrameNumber = NO_FRAMES_CAPTURED; 258 List<int64_t> mSkippedFrameNumbers; 259 std::set<int64_t> mFutureErrorSet; 260 }; 261 FrameNumberTracker mFrameNumberTracker; 262 263 void checkRepeatingSequenceCompleteLocked(const int sequenceId, const int64_t lastFrameNumber); 264 void checkAndFireSequenceCompleteLocked(); 265 266 // Misc variables 267 int32_t mShadingMapSize[2]; // const after constructor 268 int32_t mPartialResultCount; // const after constructor 269 270 }; 271 272 } // namespace android; 273 274 /** 275 * ACameraDevice opaque struct definition 276 * Leave outside of android namespace because it's NDK struct 277 */ 278 struct ACameraDevice { 279 ACameraDevice(const char* id, ACameraDevice_StateCallbacks* cb, 280 std::unique_ptr<ACameraMetadata> chars) : 281 mDevice(new CameraDevice(id, cb, std::move(chars), this)) {} 282 283 ~ACameraDevice() {}; 284 285 /******************* 286 * NDK public APIs * 287 *******************/ 288 inline const char* getId() const { return mDevice->getId(); } 289 290 camera_status_t createCaptureRequest( 291 ACameraDevice_request_template templateId, 292 ACaptureRequest** request) const { 293 return mDevice->createCaptureRequest(templateId, request); 294 } 295 296 camera_status_t createCaptureSession( 297 const ACaptureSessionOutputContainer* outputs, 298 const ACameraCaptureSession_stateCallbacks* callbacks, 299 /*out*/ACameraCaptureSession** session) { 300 return mDevice->createCaptureSession(outputs, callbacks, session); 301 } 302 303 /*********************** 304 * Device interal APIs * 305 ***********************/ 306 inline android::sp<android::hardware::camera2::ICameraDeviceCallbacks> getServiceCallback() { 307 return mDevice->getServiceCallback(); 308 }; 309 310 // Camera device is only functional after remote being set 311 inline void setRemoteDevice(android::sp<android::hardware::camera2::ICameraDeviceUser> remote) { 312 mDevice->setRemoteDevice(remote); 313 } 314 315 private: 316 android::sp<android::CameraDevice> mDevice; 317 }; 318 319 #endif // _ACAMERA_DEVICE_H 320
