mirror of
https://github.com/openharmony/drivers_peripheral.git
synced 2026-08-25 02:23:31 -04:00
wanghongtao
75 lines
2.9 KiB
C++
75 lines
2.9 KiB
C++
/*
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* Copyright (c) 2021-2022 Huawei Device Co., Ltd.
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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 OHOS_CAMERA_METADATA_UTILS_H
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#define OHOS_CAMERA_METADATA_UTILS_H
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#include <iostream>
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#include <list>
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#include <map>
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#include <vector>
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#include "camera_metadata_info.h"
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#include "message_parcel.h"
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namespace OHOS::Camera {
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class MetadataUtils {
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public:
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static bool EncodeCameraMetadata(const std::shared_ptr<CameraMetadata> &metadata,
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MessageParcel &data);
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static void DecodeCameraMetadata(MessageParcel &data, std::shared_ptr<CameraMetadata> &metadata);
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static std::string EncodeToString(std::shared_ptr<CameraMetadata> metadata);
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static std::shared_ptr<CameraMetadata> DecodeFromString(std::string setting);
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static bool ConvertMetadataToVec(const std::shared_ptr<CameraMetadata> &metadata,
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std::vector<uint8_t>& cameraAbility);
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static void ConvertVecToMetadata(const std::vector<uint8_t>& cameraAbility,
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std::shared_ptr<CameraMetadata> &metadata);
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private:
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static bool WriteMetadata(const camera_metadata_item_t &item, MessageParcel &data);
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static bool ReadMetadata(camera_metadata_item_t &item, MessageParcel &data);
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static void ItemDataToBuffer(const camera_metadata_item_t &item, void **buffer);
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static bool WriteMetadataDataToVec(const camera_metadata_item_t &entry, std::vector<uint8_t>& cameraAbility);
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static bool ReadMetadataDataFromVec(int32_t &index, camera_metadata_item_t &entry,
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const std::vector<uint8_t>& cameraAbility);
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template <class T> static void WriteData(T data, std::vector<uint8_t>& cameraAbility);
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template <class T> static void ReadData(T &data, int32_t &index, const std::vector<uint8_t>& cameraAbility);
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};
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template <class T>
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void MetadataUtils::WriteData(T data, std::vector<uint8_t>& cameraAbility)
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{
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T dataTemp = data;
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uint8_t *dataPtr = (uint8_t *)&dataTemp;
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for (size_t j = 0; j < sizeof(T); j++) {
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cameraAbility.push_back(*(dataPtr + j));
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}
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}
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template <class T>
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void MetadataUtils::ReadData(T &data, int32_t &index, const std::vector<uint8_t>& cameraAbility)
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{
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constexpr uint32_t typeLen = sizeof(T);
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uint8_t array[typeLen] = {0};
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T *ptr = nullptr;
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for (size_t j = 0; j < sizeof(T); j++) {
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array[j] = cameraAbility.at(index++);
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}
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ptr = (T *)array;
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data = *ptr;
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}
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} // namespace Camera
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#endif // OHOS_CAMERA_METADATA_UTILS_H
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