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 23 #include "CameraService.h" 24 #include "common/FrameProcessorBase.h" 25 #include "common/Camera2ClientBase.h" 26 27 namespace android { 28 29 struct CameraDeviceClientBase : 30 public CameraService::BasicClient, public BnCameraDeviceUser 31 { 32 typedef ICameraDeviceCallbacks TCamCallbacks; 33 34 const sp<ICameraDeviceCallbacks>& getRemoteCallback() { 35 return mRemoteCallback; 36 } 37 38 protected: 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 */ 56 class CameraDeviceClient : 57 public Camera2ClientBase<CameraDeviceClientBase>, 58 public camera2::FrameProcessorBase::FilteredListener 59 { 60 public: 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(); 82 83 // Returns -EBUSY if device is not idle 84 virtual status_t deleteStream(int streamId); 85 86 virtual status_t createStream( 87 int width, 88 int height, 89 int format, 90 const sp<IGraphicBufferProducer>& bufferProducer); 91 92 // Create a request object from a template. 93 virtual status_t createDefaultRequest(int templateId, 94 /*out*/ 95 CameraMetadata* request); 96 97 // Get the static metadata for the camera 98 // -- Caller owns the newly allocated metadata 99 virtual status_t getCameraInfo(/*out*/CameraMetadata* info); 100 101 // Wait until all the submitted requests have finished processing 102 virtual status_t waitUntilIdle(); 103 104 // Flush all active and pending requests as fast as possible 105 virtual status_t flush(/*out*/ 106 int64_t* lastFrameNumber = NULL); 107 108 /** 109 * Interface used by CameraService 110 */ 111 112 CameraDeviceClient(const sp<CameraService>& cameraService, 113 const sp<ICameraDeviceCallbacks>& remoteCallback, 114 const String16& clientPackageName, 115 int cameraId, 116 int cameraFacing, 117 int clientPid, 118 uid_t clientUid, 119 int servicePid); 120 virtual ~CameraDeviceClient(); 121 122 virtual status_t initialize(camera_module_t *module); 123 124 virtual status_t dump(int fd, const Vector<String16>& args); 125 126 /** 127 * Device listener interface 128 */ 129 130 virtual void notifyIdle(); 131 virtual void notifyError(ICameraDeviceCallbacks::CameraErrorCode errorCode, 132 const CaptureResultExtras& resultExtras); 133 virtual void notifyShutter(const CaptureResultExtras& resultExtras, nsecs_t timestamp); 134 135 /** 136 * Interface used by independent components of CameraDeviceClient. 137 */ 138 protected: 139 /** FilteredListener implementation **/ 140 virtual void onResultAvailable(const CaptureResult& result); 141 virtual void detachDevice(); 142 143 // Calculate the ANativeWindow transform from android.sensor.orientation 144 status_t getRotationTransformLocked(/*out*/int32_t* transform); 145 146 private: 147 /** ICameraDeviceUser interface-related private members */ 148 149 /** Preview callback related members */ 150 sp<camera2::FrameProcessorBase> mFrameProcessor; 151 static const int32_t FRAME_PROCESSOR_LISTENER_MIN_ID = 0; 152 static const int32_t FRAME_PROCESSOR_LISTENER_MAX_ID = 0x7fffffffL; 153 154 /** Utility members */ 155 bool enforceRequestPermissions(CameraMetadata& metadata); 156 157 // Find the square of the euclidean distance between two points 158 static int64_t euclidDistSquare(int32_t x0, int32_t y0, int32_t x1, int32_t y1); 159 160 // Find the closest dimensions for a given format in available stream configurations with 161 // a width <= ROUNDING_WIDTH_CAP 162 static const int32_t ROUNDING_WIDTH_CAP = 1080; 163 static bool roundBufferDimensionNearest(int32_t width, int32_t height, int32_t format, 164 const CameraMetadata& info, /*out*/int32_t* outWidth, /*out*/int32_t* outHeight); 165 166 // IGraphicsBufferProducer binder -> Stream ID 167 KeyedVector<sp<IBinder>, int> mStreamMap; 168 169 // Stream ID 170 Vector<int> mStreamingRequestList; 171 172 int32_t mRequestIdCounter; 173 }; 174 175 }; // namespace android 176 177 #endif 178