| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef HW_EMULATOR_CAMERA_EMULATED_CAMERA_FACTORY_H |
| #define HW_EMULATOR_CAMERA_EMULATED_CAMERA_FACTORY_H |
| |
| #include <utils/RefBase.h> |
| |
| #include <utils/Vector.h> |
| #include "common/libs/threads/pthread.h" |
| #include "guest/libs/platform_support/api_level_fixes.h" |
| #include "CameraConfiguration.h" |
| #include "EmulatedBaseCamera.h" |
| |
| namespace android { |
| |
| class EmulatedCameraHotplugThread; |
| |
| /* |
| * Contains declaration of a class EmulatedCameraFactory that manages cameras |
| * available for the emulation. A global instance of this class is statically |
| * instantiated and initialized when camera emulation HAL is loaded. |
| */ |
| |
| /* Class EmulatedCameraFactoryManages cameras available for the emulation. |
| * |
| * When the global static instance of this class is created on the module load, |
| * it enumerates cameras available for the emulation by connecting to the |
| * emulator's 'camera' service. For every camera found out there it creates an |
| * instance of an appropriate class, and stores it an in array of emulated |
| * cameras. In addition to the cameras reported by the emulator, a fake camera |
| * emulator is always created, so there is always at least one camera that is |
| * available. |
| * |
| * Instance of this class is also used as the entry point for the camera HAL API, |
| * including: |
| * - hw_module_methods_t::open entry point |
| * - camera_module_t::get_number_of_cameras entry point |
| * - camera_module_t::get_camera_info entry point |
| * |
| */ |
| class EmulatedCameraFactory { |
| public: |
| /* Constructs EmulatedCameraFactory instance. |
| * In this constructor the factory will create and initialize a list of |
| * emulated cameras. All errors that occur on this constructor are reported |
| * via mConstructedOK data member of this class. |
| */ |
| EmulatedCameraFactory(); |
| |
| /* Destructs EmulatedCameraFactory instance. */ |
| ~EmulatedCameraFactory(); |
| |
| /**************************************************************************** |
| * Camera HAL API handlers. |
| ***************************************************************************/ |
| |
| public: |
| /* Returns a (singleton) instance of the EmulatedCameraFactory. |
| */ |
| static EmulatedCameraFactory& Instance(); |
| |
| /* Opens (connects to) a camera device. |
| * This method is called in response to hw_module_methods_t::open callback. |
| */ |
| int cameraDeviceOpen(int camera_id, hw_device_t** device); |
| |
| /* Gets emulated camera information. |
| * This method is called in response to camera_module_t::get_camera_info callback. |
| */ |
| int getCameraInfo(int camera_id, struct camera_info *info); |
| |
| #if VSOC_PLATFORM_SDK_AFTER(J_MR2) |
| /* Sets emulated camera callbacks. |
| * This method is called in response to camera_module_t::set_callbacks callback. |
| */ |
| int setCallbacks(const camera_module_callbacks_t *callbacks); |
| |
| /* Fill in vendor tags for the module |
| * This method is called in response to camera_module_t::get_vendor_tag_ops callback. |
| */ |
| void getVendorTagOps(vendor_tag_ops_t* ops); |
| #endif |
| |
| /**************************************************************************** |
| * Camera HAL API callbacks. |
| ***************************************************************************/ |
| |
| public: |
| /* camera_module_t::get_number_of_cameras callback entry point. */ |
| static int get_number_of_cameras(void); |
| |
| /* camera_module_t::get_camera_info callback entry point. */ |
| static int get_camera_info(int camera_id, struct camera_info *info); |
| |
| #if VSOC_PLATFORM_SDK_AFTER(J_MR2) |
| /* camera_module_t::set_callbacks callback entry point. */ |
| static int set_callbacks(const camera_module_callbacks_t *callbacks); |
| |
| /* camera_module_t::get_vendor_tag_ops callback entry point */ |
| static void get_vendor_tag_ops(vendor_tag_ops_t* ops); |
| #endif |
| |
| /* camera_module_t::open_legacy callback entry point */ |
| static int open_legacy(const struct hw_module_t* module, const char* id, |
| uint32_t halVersion, struct hw_device_t** device); |
| |
| private: |
| /* hw_module_methods_t::open callback entry point. */ |
| static int device_open(const hw_module_t* module, |
| const char* name, |
| hw_device_t** device); |
| |
| /**************************************************************************** |
| * Public API. |
| ***************************************************************************/ |
| |
| public: |
| |
| /* Gets fake camera orientation. */ |
| int getFakeCameraOrientation() { |
| /* TODO: Have a boot property that controls that. */ |
| return 90; |
| } |
| |
| /* Gets number of emulated cameras. |
| */ |
| inline size_t getEmulatedCameraNum() const { |
| return mCameraDefinitions.size(); |
| } |
| |
| void onStatusChanged(int cameraId, int newStatus); |
| |
| /**************************************************************************** |
| * Private API |
| ***************************************************************************/ |
| |
| private: |
| /* Create new or return existing fake camera based on camera definition |
| * found in mCameraDefinitions. |
| * Returns NULL if cameraId is not valid (= not a valid index of |
| * mCameraDefinitions) |
| */ |
| EmulatedBaseCamera* getOrCreateFakeCamera(size_t cameraId); |
| |
| /**************************************************************************** |
| * Data members. |
| ***************************************************************************/ |
| |
| private: |
| /* Array of cameras available for the emulation. */ |
| Vector<EmulatedBaseCamera*> mEmulatedCameras; |
| |
| /* Guards access to mEmulatedCameras. */ |
| avd::Mutex mEmulatedCamerasMutex; |
| |
| #if VSOC_PLATFORM_SDK_AFTER(J_MR2) |
| /* Camera callbacks (for status changing) */ |
| const camera_module_callbacks_t* mCallbacks; |
| |
| /* Hotplug thread (to call onStatusChanged) */ |
| sp<EmulatedCameraHotplugThread> mHotplugThread; |
| #endif |
| |
| /* Back- and front camera properties accessed from cloud metadata server. */ |
| avd::CameraConfiguration mCameraConfiguration; |
| Vector<avd::CameraDefinition> mCameraDefinitions; |
| |
| public: |
| /* Contains device open entry point, as required by HAL API. */ |
| static struct hw_module_methods_t mCameraModuleMethods; |
| }; |
| |
| }; /* namespace android */ |
| |
| #endif /* HW_EMULATOR_CAMERA_EMULATED_CAMERA_FACTORY_H */ |