CameraDeviceClient.h revision c4003965258404a19b99280ac0f475e2f290bf27
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_PHOTOGRAPHY_CAMERADEVICECLIENT_H 18#define ANDROID_SERVERS_CAMERA_PHOTOGRAPHY_CAMERADEVICECLIENT_H 19 20#include <camera/camera2/ICameraDeviceUser.h> 21#include <camera/camera2/ICameraDeviceCallbacks.h> 22#include <camera/camera2/OutputConfiguration.h> 23 24#include "CameraService.h" 25#include "common/FrameProcessorBase.h" 26#include "common/Camera2ClientBase.h" 27 28namespace android { 29 30struct CameraDeviceClientBase : public CameraService::BasicClient, public BnCameraDeviceUser 31{ 32 typedef ICameraDeviceCallbacks TCamCallbacks; 33 34 const sp<ICameraDeviceCallbacks>& getRemoteCallback() { 35 return mRemoteCallback; 36 } 37 38protected: 39 CameraDeviceClientBase(const sp<CameraService>& cameraService, 40 const sp<ICameraDeviceCallbacks>& remoteCallback, 41 const String16& clientPackageName, 42 int cameraId, 43 int cameraFacing, 44 int clientPid, 45 uid_t clientUid, 46 int servicePid); 47 48 sp<ICameraDeviceCallbacks> mRemoteCallback; 49}; 50 51/** 52 * Implements the binder ICameraDeviceUser API, 53 * meant for HAL3-public implementation of 54 * android.hardware.photography.CameraDevice 55 */ 56class CameraDeviceClient : 57 public Camera2ClientBase<CameraDeviceClientBase>, 58 public camera2::FrameProcessorBase::FilteredListener 59{ 60public: 61 /** 62 * ICameraDeviceUser interface (see ICameraDeviceUser for details) 63 */ 64 65 // Note that the callee gets a copy of the metadata. 66 virtual status_t submitRequest(sp<CaptureRequest> request, 67 bool streaming = false, 68 /*out*/ 69 int64_t* lastFrameNumber = NULL); 70 // List of requests are copied. 71 virtual status_t submitRequestList(List<sp<CaptureRequest> > requests, 72 bool streaming = false, 73 /*out*/ 74 int64_t* lastFrameNumber = NULL); 75 virtual status_t cancelRequest(int requestId, 76 /*out*/ 77 int64_t* lastFrameNumber = NULL); 78 79 virtual status_t beginConfigure(); 80 81 virtual status_t endConfigure(bool isConstrainedHighSpeed = false); 82 83 // Returns -EBUSY if device is not idle 84 virtual status_t deleteStream(int streamId); 85 86 virtual status_t createStream(const OutputConfiguration &outputConfiguration); 87 88 // Create an input stream of width, height, and format. 89 virtual status_t createInputStream(int width, int height, int format); 90 91 // Get the buffer producer of the input stream 92 virtual status_t getInputBufferProducer( 93 /*out*/sp<IGraphicBufferProducer> *producer); 94 95 // Create a request object from a template. 96 virtual status_t createDefaultRequest(int templateId, 97 /*out*/ 98 CameraMetadata* request); 99 100 // Get the static metadata for the camera 101 // -- Caller owns the newly allocated metadata 102 virtual status_t getCameraInfo(/*out*/CameraMetadata* info); 103 104 // Wait until all the submitted requests have finished processing 105 virtual status_t waitUntilIdle(); 106 107 // Flush all active and pending requests as fast as possible 108 virtual status_t flush(/*out*/ 109 int64_t* lastFrameNumber = NULL); 110 111 // Prepare stream by preallocating its buffers 112 virtual status_t prepare(int streamId); 113 114 // Tear down stream resources by freeing its unused buffers 115 virtual status_t tearDown(int streamId); 116 117 /** 118 * Interface used by CameraService 119 */ 120 121 CameraDeviceClient(const sp<CameraService>& cameraService, 122 const sp<ICameraDeviceCallbacks>& remoteCallback, 123 const String16& clientPackageName, 124 int cameraId, 125 int cameraFacing, 126 int clientPid, 127 uid_t clientUid, 128 int servicePid); 129 virtual ~CameraDeviceClient(); 130 131 virtual status_t initialize(CameraModule *module); 132 133 virtual status_t dump(int fd, const Vector<String16>& args); 134 135 virtual status_t dumpClient(int fd, const Vector<String16>& args); 136 137 /** 138 * Device listener interface 139 */ 140 141 virtual void notifyIdle(); 142 virtual void notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 143 const CaptureResultExtras& resultExtras); 144 virtual void notifyShutter(const CaptureResultExtras& resultExtras, nsecs_t timestamp); 145 virtual void notifyPrepared(int streamId); 146 147 /** 148 * Interface used by independent components of CameraDeviceClient. 149 */ 150protected: 151 /** FilteredListener implementation **/ 152 virtual void onResultAvailable(const CaptureResult& result); 153 virtual void detachDevice(); 154 155 // Calculate the ANativeWindow transform from android.sensor.orientation 156 status_t getRotationTransformLocked(/*out*/int32_t* transform); 157 158private: 159 /** ICameraDeviceUser interface-related private members */ 160 161 /** Preview callback related members */ 162 sp<camera2::FrameProcessorBase> mFrameProcessor; 163 static const int32_t FRAME_PROCESSOR_LISTENER_MIN_ID = 0; 164 static const int32_t FRAME_PROCESSOR_LISTENER_MAX_ID = 0x7fffffffL; 165 166 /** Utility members */ 167 bool enforceRequestPermissions(CameraMetadata& metadata); 168 169 // Find the square of the euclidean distance between two points 170 static int64_t euclidDistSquare(int32_t x0, int32_t y0, int32_t x1, int32_t y1); 171 172 // Find the closest dimensions for a given format in available stream configurations with 173 // a width <= ROUNDING_WIDTH_CAP 174 static const int32_t ROUNDING_WIDTH_CAP = 1920; 175 static bool roundBufferDimensionNearest(int32_t width, int32_t height, int32_t format, 176 android_dataspace dataSpace, const CameraMetadata& info, 177 /*out*/int32_t* outWidth, /*out*/int32_t* outHeight); 178 179 // IGraphicsBufferProducer binder -> Stream ID for output streams 180 KeyedVector<sp<IBinder>, int> mStreamMap; 181 182 struct InputStreamConfiguration { 183 bool configured; 184 int32_t width; 185 int32_t height; 186 int32_t format; 187 int32_t id; 188 } mInputStream; 189 190 // Request ID 191 Vector<int> mStreamingRequestList; 192 193 int32_t mRequestIdCounter; 194}; 195 196}; // namespace android 197 198#endif 199