AmbisonicEncoder.h

/***************************************************************************************************
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            fantastic  spatial  holophonic               synthesis    tool    kit
 
                                    copyright (c) fabian hummel
                                       www.github.com/fshstk
                                           www.fshstk.com
 
         this file is part of the fantastic spatial holophonic synthesis toolkit (fsh::stk)
  fsh::stk is free software: it is provided under the terms of the gnu general public license v3.0
                                    www.gnu.org/licenses/gpl-3.0
***************************************************************************************************/
 
#pragma once
#include "BoundedValue.h"
#include "EnvelopeFollower.h"
#include "SphericalHarmonics.h"
#include "SphericalVector.h"
 
namespace fsh::fx
{
class AmbisonicEncoder
{
public:
  struct Params
  {
    util::SphericalVector direction; 
    util::BoundedFloat<0, util::maxAmbiOrder> order = util::maxAmbiOrder; 
  };
 
  auto getCoefficientsForNextSample() -> std::array<float, util::maxNumChannels>;
 
  void setParams(const Params&);
 
  void setSampleRate(double sampleRate);
 
private:
  void updateCoefficients();
 
  Params _params;
  std::array<util::EnvelopeFollower, util::maxNumChannels> _coefficients;
};
} // namespace fsh::fx