xref: /foundation/distributedhardware/distributed_camera/common/include/utils/data_buffer.h

/*
 * Copyright (c) 2021-2023 Huawei Device Co., Ltd.
 * 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 OHOS_DATA_BUFFER_H
#define OHOS_DATA_BUFFER_H

#include <map>
#include <string>
#include <cstddef>
#include <cstdint>
#include "ifeedable_data.h"
#include "dcamera_frame_info.h"

namespace OHOS {
namespace DistributedHardware {
class DataBuffer : public IFeedableData {
public:
    explicit DataBuffer(size_t capacity);

    size_t Size() const;
    size_t Offset() const;
    size_t Capacity() const;
    uint8_t *Data() const;
    int32_t SetRange(size_t offset, size_t size);

    void SetInt32(const std::string name, int32_t value);
    void SetInt64(const std::string name, int64_t value);
    void SetString(const std::string name, std::string value);
    bool FindInt32(const std::string& name, int32_t& value);
    bool FindInt64(const std::string& name, int64_t& value);
    bool FindString(const std::string& name, std::string& value);
    int64_t GetTimeStamp() override;
    virtual ~DataBuffer();
    DCameraFrameInfo frameInfo_;

private:
    size_t capacity_ = 0;
    size_t rangeOffset_ = 0;
    size_t rangeLength_ = 0;
    uint8_t *data_ = nullptr;

    std::map<std::string, int32_t> int32Map_;
    std::map<std::string, int64_t> int64Map_;
    std::map<std::string, std::string> stringMap_;

    DataBuffer(const DataBuffer &) = delete;
    DataBuffer &operator = (const DataBuffer &) = delete;
};
} // namespace DistributedHardware
} // namespace OHOS
#endif // OHOS_DATA_BUFFER_H