| /* |
| * Copyright (C) 2015 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 ANDROID_SERVERS_CAMERA_CAMERAFLASHLIGHT_H |
| #define ANDROID_SERVERS_CAMERA_CAMERAFLASHLIGHT_H |
| |
| #include "hardware/camera_common.h" |
| #include "utils/KeyedVector.h" |
| #include "utils/SortedVector.h" |
| #include "gui/GLConsumer.h" |
| #include "gui/Surface.h" |
| #include "common/CameraDeviceBase.h" |
| #include "device1/CameraHardwareInterface.h" |
| |
| namespace android { |
| |
| /** |
| * FlashControlBase is a base class for flash control. It defines the functions |
| * that a flash control for each camera module/device version should implement. |
| */ |
| class FlashControlBase : public virtual VirtualLightRefBase { |
| public: |
| virtual ~FlashControlBase(); |
| |
| // Whether a camera device has a flash unit. Calling this function may |
| // cause the torch mode to be turned off in HAL v1 devices. If |
| // previously-on torch mode is turned off, |
| // callbacks.torch_mode_status_change() should be invoked. |
| virtual status_t hasFlashUnit(const String8& cameraId, |
| bool *hasFlash) = 0; |
| |
| // set the torch mode to on or off. |
| virtual status_t setTorchMode(const String8& cameraId, |
| bool enabled) = 0; |
| }; |
| |
| /** |
| * CameraFlashlight can be used by camera service to control flashflight. |
| */ |
| class CameraFlashlight : public virtual VirtualLightRefBase { |
| public: |
| CameraFlashlight(CameraModule& cameraModule, |
| const camera_module_callbacks_t& callbacks); |
| virtual ~CameraFlashlight(); |
| |
| // Find all flash units. This must be called before other methods. All |
| // camera devices must be closed when it's called because HAL v1 devices |
| // need to be opened to query available flash modes. |
| status_t findFlashUnits(); |
| |
| // Whether a camera device has a flash unit. Before findFlashUnits() is |
| // called, this function always returns false. |
| bool hasFlashUnit(const String8& cameraId); |
| |
| // set the torch mode to on or off. |
| status_t setTorchMode(const String8& cameraId, bool enabled); |
| |
| // Notify CameraFlashlight that camera service is going to open a camera |
| // device. CameraFlashlight will free the resources that may cause the |
| // camera open to fail. Camera service must call this function before |
| // opening a camera device. |
| status_t prepareDeviceOpen(const String8& cameraId); |
| |
| // Notify CameraFlashlight that camera service has closed a camera |
| // device. CameraFlashlight may invoke callbacks for torch mode |
| // available depending on the implementation. |
| status_t deviceClosed(const String8& cameraId); |
| |
| private: |
| // create flashlight control based on camera module API and camera |
| // device API versions. |
| status_t createFlashlightControl(const String8& cameraId); |
| |
| // mLock should be locked. |
| bool hasFlashUnitLocked(const String8& cameraId); |
| |
| sp<FlashControlBase> mFlashControl; |
| CameraModule *mCameraModule; |
| const camera_module_callbacks_t *mCallbacks; |
| SortedVector<String8> mOpenedCameraIds; |
| |
| // camera id -> if it has a flash unit |
| KeyedVector<String8, bool> mHasFlashlightMap; |
| bool mFlashlightMapInitialized; |
| |
| Mutex mLock; // protect CameraFlashlight API |
| }; |
| |
| /** |
| * Flash control for camera module v2.4 and above. |
| */ |
| class ModuleFlashControl : public FlashControlBase { |
| public: |
| ModuleFlashControl(CameraModule& cameraModule, |
| const camera_module_callbacks_t& callbacks); |
| virtual ~ModuleFlashControl(); |
| |
| // FlashControlBase |
| status_t hasFlashUnit(const String8& cameraId, bool *hasFlash); |
| status_t setTorchMode(const String8& cameraId, bool enabled); |
| |
| private: |
| CameraModule *mCameraModule; |
| |
| Mutex mLock; |
| }; |
| |
| /** |
| * Flash control for camera module <= v2.3 and camera HAL v2-v3 |
| */ |
| class CameraDeviceClientFlashControl : public FlashControlBase { |
| public: |
| CameraDeviceClientFlashControl(CameraModule& cameraModule, |
| const camera_module_callbacks_t& callbacks); |
| virtual ~CameraDeviceClientFlashControl(); |
| |
| // FlashControlBase |
| status_t setTorchMode(const String8& cameraId, bool enabled); |
| status_t hasFlashUnit(const String8& cameraId, bool *hasFlash); |
| |
| private: |
| // connect to a camera device |
| status_t connectCameraDevice(const String8& cameraId); |
| // disconnect and free mDevice |
| status_t disconnectCameraDevice(); |
| |
| // initialize a surface |
| status_t initializeSurface(sp<CameraDeviceBase>& device, int32_t width, |
| int32_t height); |
| |
| // submit a request to enable the torch mode |
| status_t submitTorchEnabledRequest(); |
| |
| // get the smallest surface size of IMPLEMENTATION_DEFINED |
| status_t getSmallestSurfaceSize(const camera_info& info, int32_t *width, |
| int32_t *height); |
| |
| // protected by mLock |
| status_t hasFlashUnitLocked(const String8& cameraId, bool *hasFlash); |
| |
| CameraModule *mCameraModule; |
| const camera_module_callbacks_t *mCallbacks; |
| String8 mCameraId; |
| bool mTorchEnabled; |
| CameraMetadata *mMetadata; |
| // WORKAROUND: will be set to true for HAL v2 devices where |
| // setStreamingRequest() needs to be call for torch mode settings to |
| // take effect. |
| bool mStreaming; |
| |
| sp<CameraDeviceBase> mDevice; |
| |
| sp<IGraphicBufferProducer> mProducer; |
| sp<IGraphicBufferConsumer> mConsumer; |
| sp<GLConsumer> mSurfaceTexture; |
| sp<Surface> mSurface; |
| int32_t mStreamId; |
| |
| Mutex mLock; |
| }; |
| |
| /** |
| * Flash control for camera module <= v2.3 and camera HAL v1 |
| */ |
| class CameraHardwareInterfaceFlashControl : public FlashControlBase { |
| public: |
| CameraHardwareInterfaceFlashControl(CameraModule& cameraModule, |
| const camera_module_callbacks_t& callbacks); |
| virtual ~CameraHardwareInterfaceFlashControl(); |
| |
| // FlashControlBase |
| status_t setTorchMode(const String8& cameraId, bool enabled); |
| status_t hasFlashUnit(const String8& cameraId, bool *hasFlash); |
| |
| private: |
| // connect to a camera device |
| status_t connectCameraDevice(const String8& cameraId); |
| |
| // disconnect and free mDevice |
| status_t disconnectCameraDevice(); |
| |
| // initialize the preview window |
| status_t initializePreviewWindow(const sp<CameraHardwareInterface>& device, |
| int32_t width, int32_t height); |
| |
| // start preview and enable torch |
| status_t startPreviewAndTorch(); |
| |
| // get the smallest surface |
| status_t getSmallestSurfaceSize(int32_t *width, int32_t *height); |
| |
| // protected by mLock |
| // If this function opens camera device in order to check if it has a flash unit, the |
| // camera device will remain open if keepDeviceOpen is true and the camera device will be |
| // closed if keepDeviceOpen is false. If camera device is already open when calling this |
| // function, keepDeviceOpen is ignored. |
| status_t hasFlashUnitLocked(const String8& cameraId, bool *hasFlash, bool keepDeviceOpen); |
| |
| CameraModule *mCameraModule; |
| const camera_module_callbacks_t *mCallbacks; |
| sp<CameraHardwareInterface> mDevice; |
| String8 mCameraId; |
| CameraParameters mParameters; |
| bool mTorchEnabled; |
| |
| sp<IGraphicBufferProducer> mProducer; |
| sp<IGraphicBufferConsumer> mConsumer; |
| sp<GLConsumer> mSurfaceTexture; |
| sp<Surface> mSurface; |
| |
| Mutex mLock; |
| }; |
| |
| } // namespace android |
| |
| #endif |