#ifndef HDRSYNTHESIS_HDR_SYNTHESIS_H
#define HDRSYNTHESIS_HDR_SYNTHESIS_H

#include <opencv2/core/cuda.hpp>

#include <cstdint>
#include <memory>

static constexpr auto default_pyramid_level = 6;

class hdr_buffer;

// TODO: use half precision float point number to further optimize
class hdr_synthesizer {
public:

    explicit hdr_synthesizer(cv::Size size, uint8_t pyramid_level = default_pyramid_level,
                             cv::cuda::Stream &stream = cv::cuda::Stream::Null());

    ~hdr_synthesizer();

    hdr_buffer *malloc_buffer(); // per image buffer

    static void free_buffer(hdr_buffer *buf);

    void preprocess_image(hdr_buffer *buf, cv::InputArray img_dev);

    void merge_image(hdr_buffer *buf_a, hdr_buffer *buf_b, cv::OutputArray img_dev_out);

private:
    struct impl;
    std::unique_ptr<impl> pimpl;
};

#endif //HDRSYNTHESIS_HDR_SYNTHESIS_H