1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_SERVERS_CAMERA_CAMERA2_PROFRAMEPROCESSOR_H 18 #define ANDROID_SERVERS_CAMERA_CAMERA2_PROFRAMEPROCESSOR_H 19 20 #include <utils/Thread.h> 21 #include <utils/String16.h> 22 #include <utils/Vector.h> 23 #include <utils/KeyedVector.h> 24 #include <utils/List.h> 25 #include <camera/CameraMetadata.h> 26 27 namespace android { 28 29 class CameraDeviceBase; 30 31 namespace camera2 { 32 33 /* Output frame metadata processing thread. This thread waits for new 34 * frames from the device, and analyzes them as necessary. 35 */ 36 class FrameProcessorBase: public Thread { 37 public: 38 FrameProcessorBase(wp<CameraDeviceBase> device); 39 virtual ~FrameProcessorBase(); 40 41 struct FilteredListener: virtual public RefBase { 42 virtual void onFrameAvailable(int32_t requestId, 43 const CameraMetadata &frame) = 0; 44 }; 45 46 // Register a listener for a range of IDs [minId, maxId). Multiple listeners 47 // can be listening to the same range. 48 // QUIRK: sendPartials controls whether partial results will be sent. 49 status_t registerListener(int32_t minId, int32_t maxId, 50 wp<FilteredListener> listener, 51 bool quirkSendPartials = true); 52 status_t removeListener(int32_t minId, int32_t maxId, 53 wp<FilteredListener> listener); 54 55 void dump(int fd, const Vector<String16>& args); 56 protected: 57 static const nsecs_t kWaitDuration = 10000000; // 10 ms 58 wp<CameraDeviceBase> mDevice; 59 60 virtual bool threadLoop(); 61 62 Mutex mInputMutex; 63 Mutex mLastFrameMutex; 64 65 struct RangeListener { 66 int32_t minId; 67 int32_t maxId; 68 wp<FilteredListener> listener; 69 bool quirkSendPartials; 70 }; 71 List<RangeListener> mRangeListeners; 72 73 void processNewFrames(const sp<CameraDeviceBase> &device); 74 75 virtual bool processSingleFrame(CameraMetadata &frame, 76 const sp<CameraDeviceBase> &device); 77 78 status_t processListeners(const CameraMetadata &frame, 79 const sp<CameraDeviceBase> &device); 80 81 CameraMetadata mLastFrame; 82 }; 83 84 85 }; //namespace camera2 86 }; //namespace android 87 88 #endif 89