boost::gil::make_scanline_reader

template<typename FormatTag>
get_scanline_reader<std::wstring, FormatTag>::type
make_scanline_reader(
    detail::filesystem::path const& path,
    FormatTag const&);

template<typename FormatTag>
get_scanline_reader<std::wstring, FormatTag>::type
make_scanline_reader(
    std::wstring const& file_name,
    FormatTag const&);

template<
    typename Device,
    typename FormatTag>
get_scanline_reader<Device, FormatTag>::type
make_scanline_reader(
    Device& io_dev,
    FormatTag const&)
requires mp11::mp_and
        <
            detail::is_adaptable_input_device<FormatTag, Device>,
            is_format_tag<FormatTag>
        >::value;

template<
    typename String,
    typename FormatTag>
get_scanline_reader<String, FormatTag>::type
make_scanline_reader(
    String const& file_name,
    FormatTag const&)
requires mp11::mp_and
        <
            detail::is_supported_path_spec<String>,
            is_format_tag<FormatTag>
        >::value;