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 #ifndef ANDROID_SERVERS_CAMERA_CAMERA2_ZSLPROCESSOR_H 18 #define ANDROID_SERVERS_CAMERA_CAMERA2_ZSLPROCESSOR_H 19 20 #include <utils/Thread.h> 21 #include <utils/String16.h> 22 #include <utils/Vector.h> 23 #include <utils/Mutex.h> 24 #include <utils/Condition.h> 25 #include <gui/BufferItemConsumer.h> 26 #include "Parameters.h" 27 #include "FrameProcessor.h" 28 #include "camera/CameraMetadata.h" 29 #include "Camera2Heap.h" 30 #include "../CameraDeviceBase.h" 31 #include "ZslProcessorInterface.h" 32 33 namespace android { 34 35 class Camera2Client; 36 37 namespace camera2 { 38 39 class CaptureSequencer; 40 41 /*** 42 * ZSL queue processing 43 */ 44 class ZslProcessor: 45 virtual public Thread, 46 virtual public BufferItemConsumer::FrameAvailableListener, 47 virtual public FrameProcessor::FilteredListener, 48 virtual public CameraDeviceBase::BufferReleasedListener, 49 public ZslProcessorInterface { 50 public: 51 ZslProcessor(sp<Camera2Client> client, wp<CaptureSequencer> sequencer); 52 ~ZslProcessor(); 53 54 // From mZslConsumer 55 virtual void onFrameAvailable(); 56 // From FrameProcessor 57 virtual void onFrameAvailable(int32_t frameId, const CameraMetadata &frame); 58 59 virtual void onBufferReleased(buffer_handle_t *handle); 60 61 /** 62 **************************************** 63 * ZslProcessorInterface implementation * 64 **************************************** 65 */ 66 67 status_t updateStream(const Parameters ¶ms); 68 status_t deleteStream(); 69 int getStreamId() const; 70 71 status_t pushToReprocess(int32_t requestId); 72 status_t clearZslQueue(); 73 74 void dump(int fd, const Vector<String16>& args) const; 75 private: 76 static const nsecs_t kWaitDuration = 10000000; // 10 ms 77 78 enum { 79 RUNNING, 80 LOCKED 81 } mState; 82 83 wp<Camera2Client> mClient; 84 wp<CameraDeviceBase> mDevice; 85 wp<CaptureSequencer> mSequencer; 86 int mId; 87 88 mutable Mutex mInputMutex; 89 bool mZslBufferAvailable; 90 Condition mZslBufferAvailableSignal; 91 92 enum { 93 NO_STREAM = -1 94 }; 95 96 int mZslStreamId; 97 int mZslReprocessStreamId; 98 sp<BufferItemConsumer> mZslConsumer; 99 sp<ANativeWindow> mZslWindow; 100 101 struct ZslPair { 102 BufferItemConsumer::BufferItem buffer; 103 CameraMetadata frame; 104 }; 105 106 static const size_t kZslBufferDepth = 4; 107 static const size_t kFrameListDepth = kZslBufferDepth * 2; 108 Vector<CameraMetadata> mFrameList; 109 size_t mFrameListHead; 110 111 ZslPair mNextPair; 112 113 Vector<ZslPair> mZslQueue; 114 size_t mZslQueueHead; 115 size_t mZslQueueTail; 116 117 CameraMetadata mLatestCapturedRequest; 118 119 virtual bool threadLoop(); 120 121 status_t processNewZslBuffer(); 122 123 // Match up entries from frame list to buffers in ZSL queue 124 void findMatchesLocked(); 125 126 status_t clearZslQueueLocked(); 127 128 void dumpZslQueue(int id) const; 129 }; 130 131 132 }; //namespace camera2 133 }; //namespace android 134 135 #endif 136