transform_window() [2/2]

template<OperationReadyData DataType>

DataType MayaFlux::Yantra::transform_window	(	DataType &	input,
		Nodes::Generator::WindowType	window_type,
		uint32_t	window_size = 0
	)

Windowing transformation using C++20 ranges (IN-PLACE)

Template Parameters

DataType

OperationReadyData type

Parameters

input	Input data - WILL BE MODIFIED
window_type	Type of window to apply
window_size	Size of window (0 = full data size)

Returns

Windowed data

Definition at line 101 of file SpectralHelper.hpp.

{
    auto [target_data, structure_info] = OperationHelper::extract_structured_double(input);
 
    uint32_t size = window_size > 0 ? window_size : smallest_size(target_data);
 
    auto window = Nodes::Generator::generate_window(size, window_type);
 
    for (auto& span : target_data) {
        auto data_view = span | std::views::take(std::min(size, static_cast<uint32_t>(span.size())));
        auto window_view = window | std::views::take(data_view.size());
 
        std::ranges::transform(data_view, window_view, data_view.begin(),
            [](double sample, double win) { return sample * win; });
    }
 
    auto reconstructed_data = target_data
        | std::views::transform([](const auto& span) {
              return std::vector<double>(span.begin(), span.end());
          })
        | std::ranges::to<std::vector>();
 
    return OperationHelper::reconstruct_from_double<DataType>(reconstructed_data, structure_info);
}

References MayaFlux::Yantra::OperationHelper::extract_structured_double(), MayaFlux::Nodes::Generator::generate_window(), and smallest_size().

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