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 <android/hardware/camera2/BnCameraDeviceUser.h> 21 #include <android/hardware/camera2/ICameraDeviceCallbacks.h> 22 #include <camera/camera2/OutputConfiguration.h> 23 #include <camera/camera2/SubmitInfo.h> 24 25 #include "CameraService.h" 26 #include "common/FrameProcessorBase.h" 27 #include "common/Camera2ClientBase.h" 28 29 namespace android { 30 31 struct CameraDeviceClientBase : 32 public CameraService::BasicClient, 33 public hardware::camera2::BnCameraDeviceUser 34 { 35 typedef hardware::camera2::ICameraDeviceCallbacks TCamCallbacks; 36 getRemoteCallbackCameraDeviceClientBase37 const sp<hardware::camera2::ICameraDeviceCallbacks>& getRemoteCallback() { 38 return mRemoteCallback; 39 } 40 41 protected: 42 CameraDeviceClientBase(const sp<CameraService>& cameraService, 43 const sp<hardware::camera2::ICameraDeviceCallbacks>& remoteCallback, 44 const String16& clientPackageName, 45 int cameraId, 46 int cameraFacing, 47 int clientPid, 48 uid_t clientUid, 49 int servicePid); 50 51 sp<hardware::camera2::ICameraDeviceCallbacks> mRemoteCallback; 52 }; 53 54 /** 55 * Implements the binder ICameraDeviceUser API, 56 * meant for HAL3-public implementation of 57 * android.hardware.photography.CameraDevice 58 */ 59 class CameraDeviceClient : 60 public Camera2ClientBase<CameraDeviceClientBase>, 61 public camera2::FrameProcessorBase::FilteredListener 62 { 63 public: 64 /** 65 * ICameraDeviceUser interface (see ICameraDeviceUser for details) 66 */ 67 68 // Note that the callee gets a copy of the metadata. 69 virtual binder::Status submitRequest( 70 const hardware::camera2::CaptureRequest& request, 71 bool streaming = false, 72 /*out*/ 73 hardware::camera2::utils::SubmitInfo *submitInfo = nullptr); 74 // List of requests are copied. 75 virtual binder::Status submitRequestList( 76 const std::vector<hardware::camera2::CaptureRequest>& requests, 77 bool streaming = false, 78 /*out*/ 79 hardware::camera2::utils::SubmitInfo *submitInfo = nullptr); 80 virtual binder::Status cancelRequest(int requestId, 81 /*out*/ 82 int64_t* lastFrameNumber = NULL); 83 84 virtual binder::Status beginConfigure(); 85 86 virtual binder::Status endConfigure(bool isConstrainedHighSpeed = false); 87 88 // Returns -EBUSY if device is not idle 89 virtual binder::Status deleteStream(int streamId); 90 91 virtual binder::Status createStream( 92 const hardware::camera2::params::OutputConfiguration &outputConfiguration, 93 /*out*/ 94 int32_t* newStreamId = NULL); 95 96 // Create an input stream of width, height, and format. 97 virtual binder::Status createInputStream(int width, int height, int format, 98 /*out*/ 99 int32_t* newStreamId = NULL); 100 101 // Get the buffer producer of the input stream 102 virtual binder::Status getInputSurface( 103 /*out*/ 104 view::Surface *inputSurface); 105 106 // Create a request object from a template. 107 virtual binder::Status createDefaultRequest(int templateId, 108 /*out*/ 109 hardware::camera2::impl::CameraMetadataNative* request); 110 111 // Get the static metadata for the camera 112 // -- Caller owns the newly allocated metadata 113 virtual binder::Status getCameraInfo( 114 /*out*/ 115 hardware::camera2::impl::CameraMetadataNative* cameraCharacteristics); 116 117 // Wait until all the submitted requests have finished processing 118 virtual binder::Status waitUntilIdle(); 119 120 // Flush all active and pending requests as fast as possible 121 virtual binder::Status flush( 122 /*out*/ 123 int64_t* lastFrameNumber = NULL); 124 125 // Prepare stream by preallocating its buffers 126 virtual binder::Status prepare(int32_t streamId); 127 128 // Tear down stream resources by freeing its unused buffers 129 virtual binder::Status tearDown(int32_t streamId); 130 131 // Prepare stream by preallocating up to maxCount of its buffers 132 virtual binder::Status prepare2(int32_t maxCount, int32_t streamId); 133 134 /** 135 * Interface used by CameraService 136 */ 137 138 CameraDeviceClient(const sp<CameraService>& cameraService, 139 const sp<hardware::camera2::ICameraDeviceCallbacks>& remoteCallback, 140 const String16& clientPackageName, 141 int cameraId, 142 int cameraFacing, 143 int clientPid, 144 uid_t clientUid, 145 int servicePid); 146 virtual ~CameraDeviceClient(); 147 148 virtual status_t initialize(CameraModule *module); 149 150 virtual status_t dump(int fd, const Vector<String16>& args); 151 152 virtual status_t dumpClient(int fd, const Vector<String16>& args); 153 154 /** 155 * Device listener interface 156 */ 157 158 virtual void notifyIdle(); 159 virtual void notifyError(int32_t errorCode, 160 const CaptureResultExtras& resultExtras); 161 virtual void notifyShutter(const CaptureResultExtras& resultExtras, nsecs_t timestamp); 162 virtual void notifyPrepared(int streamId); 163 virtual void notifyRepeatingRequestError(long lastFrameNumber); 164 165 /** 166 * Interface used by independent components of CameraDeviceClient. 167 */ 168 protected: 169 /** FilteredListener implementation **/ 170 virtual void onResultAvailable(const CaptureResult& result); 171 virtual void detachDevice(); 172 173 // Calculate the ANativeWindow transform from android.sensor.orientation 174 status_t getRotationTransformLocked(/*out*/int32_t* transform); 175 176 private: 177 /** ICameraDeviceUser interface-related private members */ 178 179 /** Preview callback related members */ 180 sp<camera2::FrameProcessorBase> mFrameProcessor; 181 static const int32_t FRAME_PROCESSOR_LISTENER_MIN_ID = 0; 182 static const int32_t FRAME_PROCESSOR_LISTENER_MAX_ID = 0x7fffffffL; 183 184 /** Utility members */ 185 binder::Status checkPidStatus(const char* checkLocation); 186 bool enforceRequestPermissions(CameraMetadata& metadata); 187 188 // Find the square of the euclidean distance between two points 189 static int64_t euclidDistSquare(int32_t x0, int32_t y0, int32_t x1, int32_t y1); 190 191 // Find the closest dimensions for a given format in available stream configurations with 192 // a width <= ROUNDING_WIDTH_CAP 193 static const int32_t ROUNDING_WIDTH_CAP = 1920; 194 static bool roundBufferDimensionNearest(int32_t width, int32_t height, int32_t format, 195 android_dataspace dataSpace, const CameraMetadata& info, 196 /*out*/int32_t* outWidth, /*out*/int32_t* outHeight); 197 198 // IGraphicsBufferProducer binder -> Stream ID for output streams 199 KeyedVector<sp<IBinder>, int> mStreamMap; 200 201 struct InputStreamConfiguration { 202 bool configured; 203 int32_t width; 204 int32_t height; 205 int32_t format; 206 int32_t id; 207 } mInputStream; 208 209 // Streaming request ID 210 int32_t mStreamingRequestId; 211 Mutex mStreamingRequestIdLock; 212 static const int32_t REQUEST_ID_NONE = -1; 213 214 int32_t mRequestIdCounter; 215 216 }; 217 218 }; // namespace android 219 220 #endif 221