Program Listing for File camera.cpp

↰ Return to documentation for file (src/bitrl/sensors/camera.cpp)

//
// Created by alex on 11/23/25.
//

#include "camera.h"
#include "bitrl/sensors/camera.h"
#include <boost/beast/core/detail/base64.hpp>
#include <vector>
namespace bitrl
{
    namespace sensors
    {
        std::optional<CameraReading>
        CameraReading::parse(const std::string& base64jpeg)
        {
            // Decode base64
            auto tmp = std::string(base64jpeg);

            // 1) Allocate output buffer big enough
            std::string decoded;
            decoded.resize(tmp.size() * 3 / 4 + 4); // safe upper bound


            auto result = boost::beast::detail::base64::decode(
                decoded.data(), tmp.data(), tmp.size());

            // trim to actual decoded size
            decoded.resize(result.first);

            std::vector<uchar> buf(decoded.data(), decoded.data() + decoded.size());
            auto image =  cv::imdecode(buf, cv::IMREAD_COLOR);

            if (image.empty()) {
                return std::nullopt;
            }

            CameraReading reading;
            reading.image = image;
            return reading;
        }

    }
}