FrameProcessorBase.h revision a91537e268f2b35f9f0dfdc0c4f84655c93285ae
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 27struct camera_frame_metadata; 28 29namespace android { 30 31class ProCamera2Client; 32 33namespace camera2 { 34 35/* Output frame metadata processing thread. This thread waits for new 36 * frames from the device, and analyzes them as necessary. 37 */ 38class ProFrameProcessor: public Thread { 39 public: 40 ProFrameProcessor(wp<ProCamera2Client> client); 41 ~ProFrameProcessor(); 42 43 struct FilteredListener: virtual public RefBase { 44 virtual void onFrameAvailable(int32_t frameId, 45 const CameraMetadata &frame) = 0; 46 }; 47 48 // Register a listener for a range of IDs [minId, maxId). Multiple listeners 49 // can be listening to the same range 50 status_t registerListener(int32_t minId, int32_t maxId, wp<FilteredListener> listener); 51 status_t removeListener(int32_t minId, int32_t maxId, wp<FilteredListener> listener); 52 53 void dump(int fd, const Vector<String16>& args); 54 private: 55 static const nsecs_t kWaitDuration = 10000000; // 10 ms 56 wp<ProCamera2Client> mClient; 57 58 virtual bool threadLoop(); 59 60 Mutex mInputMutex; 61 62 struct RangeListener { 63 int32_t minId; 64 int32_t maxId; 65 wp<FilteredListener> listener; 66 }; 67 List<RangeListener> mRangeListeners; 68 69 void processNewFrames(sp<ProCamera2Client> &client); 70 71 status_t processListeners(const CameraMetadata &frame, 72 sp<ProCamera2Client> &client); 73 74 CameraMetadata mLastFrame; 75}; 76 77 78}; //namespace camera2 79}; //namespace android 80 81#endif 82