multilevel.hpp

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// toolboxes/wavelet/include/nk/wavelet/dwt/multilevel.hpp
//
// Multi-level discrete wavelet transform: wavedec / waverec, plus the
// appcoef / detcoef extractors that index into the (C, L) bookkeeping
// vectors.
 
#pragma once
 
#include <memory_resource>
#include <nk/value/value.hpp>
#include <string>
#include <utility>
 
namespace nk::wavelet {

 

std::pair<Value, Value>
wavedec(const Value &x, int n, const std::string &wname,
        std::pmr::memory_resource *mr = nullptr);

Value waverec(const Value &C, const Value &L, const std::string &wname,
              std::pmr::memory_resource *mr = nullptr);

Value appcoef(const Value &C, const Value &L, const std::string &wname,
              int level,
              std::pmr::memory_resource *mr = nullptr);

Value appcoef_with_filters_pub(const Value &C, const Value &L,
                               const std::vector<double> &Lo_R,
                               const std::vector<double> &Hi_R,
                               int level,
                               std::pmr::memory_resource *mr = nullptr);

Value detcoef(const Value &C, const Value &L, int level,
              std::pmr::memory_resource *mr = nullptr);

Value wrcoef(const std::string &type, const Value &c, const Value &l,
             const std::string &wname, int n,
             std::pmr::memory_resource *mr = nullptr);

struct WenergyResult {
    Value Ea;   
    Value Ed;   
};

WenergyResult wenergy(const Value &C, const Value &L,
                      std::pmr::memory_resource *mr = nullptr);

Value upcoef(const std::string &type, const Value &X, const std::string &wname,
             int n, long long len = -1, std::pmr::memory_resource *mr = nullptr);
 

} // namespace nk::wavelet