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/*
* Copyright (C) 2018 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_HARDWARE_CAMERA_PROVIDER_V2_4_EXTCAMERAPROVIDER_H
#define ANDROID_HARDWARE_CAMERA_PROVIDER_V2_4_EXTCAMERAPROVIDER_H
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utils/Mutex.h>
#include <utils/Thread.h>
#include <hidl/Status.h>
#include <hidl/MQDescriptor.h>
#include "ExternalCameraUtils.h"
#include "CameraProvider_2_4.h"
namespace android {
namespace hardware {
namespace camera {
namespace provider {
namespace V2_4 {
namespace implementation {
using ::android::hardware::camera::common::V1_0::CameraDeviceStatus;
using ::android::hardware::camera::common::V1_0::Status;
using ::android::hardware::camera::common::V1_0::VendorTagSection;
using ::android::hardware::camera::external::common::ExternalCameraConfig;
using ::android::hardware::camera::provider::V2_4::ICameraProvider;
using ::android::hardware::camera::provider::V2_4::ICameraProviderCallback;
using ::android::hardware::Return;
using ::android::hardware::Void;
using ::android::hardware::hidl_vec;
using ::android::hardware::hidl_string;
using ::android::sp;
using ::android::Mutex;
/**
* The implementation of external webcam CameraProvider 2.4, separated
* from the HIDL interface layer to allow for implementation reuse by later
* provider versions.
*
* This camera provider supports standard UVC webcameras via the Linux V4L2
* UVC driver.
*/
struct ExternalCameraProviderImpl_2_4 {
ExternalCameraProviderImpl_2_4();
~ExternalCameraProviderImpl_2_4();
// Caller must use this method to check if CameraProvider ctor failed
bool isInitFailed() { return false;}
// Methods from ::android::hardware::camera::provider::V2_4::ICameraProvider follow.
Return<Status> setCallback(const sp<ICameraProviderCallback>& callback);
Return<void> getVendorTags(ICameraProvider::getVendorTags_cb _hidl_cb);
Return<void> getCameraIdList(ICameraProvider::getCameraIdList_cb _hidl_cb);
Return<void> isSetTorchModeSupported(ICameraProvider::isSetTorchModeSupported_cb _hidl_cb);
Return<void> getCameraDeviceInterface_V1_x(
const hidl_string&,
ICameraProvider::getCameraDeviceInterface_V1_x_cb);
Return<void> getCameraDeviceInterface_V3_x(
const hidl_string&,
ICameraProvider::getCameraDeviceInterface_V3_x_cb);
private:
void addExternalCamera(const char* devName);
void deviceAdded(const char* devName);
void deviceRemoved(const char* devName);
class HotplugThread : public android::Thread {
public:
HotplugThread(ExternalCameraProviderImpl_2_4* parent);
~HotplugThread();
virtual bool threadLoop() override;
private:
ExternalCameraProviderImpl_2_4* mParent = nullptr;
const std::unordered_set<std::string> mInternalDevices;
int mINotifyFD = -1;
int mWd = -1;
};
Mutex mLock;
sp<ICameraProviderCallback> mCallbacks = nullptr;
std::unordered_map<std::string, CameraDeviceStatus> mCameraStatusMap; // camera id -> status
const ExternalCameraConfig mCfg;
HotplugThread mHotPlugThread;
int mPreferredHal3MinorVersion;
};
} // namespace implementation
} // namespace V2_4
} // namespace provider
} // namespace camera
} // namespace hardware
} // namespace android
#endif // ANDROID_HARDWARE_CAMERA_PROVIDER_V2_4_EXTCAMERAPROVIDER_H