WriteBuffer.hpp

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// Copyright (C) 2021 COGIP Robotics association <cogip35@gmail.com>
// This file is subject to the terms and conditions of the GNU Lesser
// General Public License v2.1. See the file LICENSE in the top level
// directory for more details.
 
 
#pragma once
 
#include <cstdint>
#include "canpb.hpp"
#include "WriteBufferInterface.h"
 
#define CANPB_BASE64_ENCODE_BUFFER_SIZE (CANPB_OUTPUT_MESSAGE_LENGTH_MAX * 2)
 
namespace cogip {
 
namespace canpb {
 
class WriteBuffer : public EmbeddedProto::WriteBufferInterface
{
public:
    WriteBuffer() = default;
 
    ~WriteBuffer() override = default;
 
    virtual void clear() override;
 
    virtual uint32_t get_size() const override;
 
    virtual uint32_t get_max_size() const override;
 
    virtual uint32_t get_available_size() const override;
 
    virtual bool push(const uint8_t byte) override;
 
    virtual bool push(const uint8_t *bytes, const uint32_t length) override;
 
    uint8_t * get_data();
 
    size_t base64_encode();
 
    inline uint8_t * get_base64_data()
    {
        return base64_data_;
    }
 
 
private:
    uint8_t data_[CANPB_OUTPUT_MESSAGE_LENGTH_MAX];
    uint8_t base64_data_[CANPB_BASE64_ENCODE_BUFFER_SIZE];
    uint32_t write_index_;
};
 
} // namespace canpb
 
} // namespace cogip