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150 lines
4.9 KiB
150 lines
4.9 KiB
10 years ago
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/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_SERVERS_CAMERA_CAMERAFLASHLIGHT_H
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#define ANDROID_SERVERS_CAMERA_CAMERAFLASHLIGHT_H
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#include "hardware/camera_common.h"
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#include "utils/KeyedVector.h"
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#include "gui/GLConsumer.h"
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#include "gui/Surface.h"
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#include "common/CameraDeviceBase.h"
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namespace android {
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/**
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* FlashControlBase is a base class for flash control. It defines the functions
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* that a flash control for each camera module/device version should implement.
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*/
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class FlashControlBase : public virtual VirtualLightRefBase {
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public:
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virtual ~FlashControlBase();
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// Whether a camera device has a flash unit. Calling this function may
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// cause the torch mode to be turned off in HAL v1 devices. If
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// previously-on torch mode is turned off,
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// callbacks.torch_mode_status_change() should be invoked.
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virtual status_t hasFlashUnit(const String16& cameraId,
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bool *hasFlash) = 0;
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// set the torch mode to on or off.
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virtual status_t setTorchMode(const String16& cameraId,
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bool enabled) = 0;
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};
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/**
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* CameraFlashlight can be used by camera service to control flashflight.
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*/
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class CameraFlashlight : public virtual VirtualLightRefBase {
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public:
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CameraFlashlight(CameraModule& cameraModule,
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const camera_module_callbacks_t& callbacks);
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virtual ~CameraFlashlight();
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// set the torch mode to on or off.
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status_t setTorchMode(const String16& cameraId, bool enabled);
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// Whether a camera device has a flash unit. Calling this function may
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// cause the torch mode to be turned off in HAL v1 devices.
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bool hasFlashUnit(const String16& cameraId);
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// Notify CameraFlashlight that camera service is going to open a camera
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// device. CameraFlashlight will free the resources that may cause the
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// camera open to fail. Camera service must call this function before
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// opening a camera device.
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status_t prepareDeviceOpen();
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private:
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// create flashlight control based on camera module API and camera
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// device API versions.
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status_t createFlashlightControl(const String16& cameraId);
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sp<FlashControlBase> mFlashControl;
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CameraModule *mCameraModule;
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const camera_module_callbacks_t *mCallbacks;
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Mutex mLock;
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};
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/**
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* Flash control for camera module v2.4 and above.
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*/
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class FlashControl : public FlashControlBase {
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public:
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FlashControl(CameraModule& cameraModule,
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const camera_module_callbacks_t& callbacks);
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virtual ~FlashControl();
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// FlashControlBase
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status_t hasFlashUnit(const String16& cameraId, bool *hasFlash);
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status_t setTorchMode(const String16& cameraId, bool enabled);
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private:
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CameraModule *mCameraModule;
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Mutex mLock;
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};
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/**
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* Flash control for camera module <= v2.3 and camera HAL v2-v3
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*/
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class CameraDeviceClientFlashControl : public FlashControlBase {
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public:
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CameraDeviceClientFlashControl(CameraModule& cameraModule,
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const camera_module_callbacks_t& callbacks);
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virtual ~CameraDeviceClientFlashControl();
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// FlashControlBase
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status_t setTorchMode(const String16& cameraId, bool enabled);
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status_t hasFlashUnit(const String16& cameraId, bool *hasFlash);
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private:
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// connect to a camera device
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status_t connectCameraDevice(const String16& cameraId);
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// initialize a surface
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status_t initializeSurface(int32_t width, int32_t height);
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// submit a request with the given torch mode
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status_t submitTorchRequest(bool enabled);
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// get the smallest surface size of IMPLEMENTATION_DEFINED
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status_t getSmallestSurfaceSize(const camera_info& info, int32_t *width,
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int32_t *height);
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status_t hasFlashUnitLocked(const String16& cameraId, bool *hasFlash);
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CameraModule *mCameraModule;
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const camera_module_callbacks_t *mCallbacks;
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String16 mCameraId;
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bool mTorchEnabled;
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CameraMetadata *mMetadata;
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sp<CameraDeviceBase> mDevice;
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sp<IGraphicBufferProducer> mProducer;
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sp<IGraphicBufferConsumer> mConsumer;
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sp<GLConsumer> mSurfaceTexture;
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sp<ANativeWindow> mAnw;
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int32_t mStreamId;
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Mutex mLock;
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};
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} // namespace android
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#endif
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