CompressorEditor.cpp

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/*  SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
 
  Audacity: A Digital Audio Editor
 
  CompressorEditor.cpp
 
  Matthieu Hodgkinson
 
**********************************************************************/
#include "CompressorEditor.h"
#include "CompressorInstance.h"
#include "ShuttleGui.h"
 
namespace
{
static constexpr auto lookaheadMinMs = 0.;
static constexpr auto lookaheadMaxMs = 1000.;
static constexpr auto compressionRatioMax = 20.;
 
class ParameterWrapper : public DynamicRangeProcessorParameter
{
public:
   ParameterWrapper(const CompressorParameter& parameter)
       : mParameter { parameter }
   {
   }
 
   double Min() const override
   {
      return mParameter.min / mParameter.scale;
   }
 
   double Max() const override
   {
      return mParameter.max / mParameter.scale;
   }
 
   double SliderMin() const override
   {
      return mParameter.min;
   }
 
   double SliderMax() const override
   {
      return mParameter.max;
   }
 
   double TextToSlider() const override
   {
      return mParameter.scale;
   }
 
   const CompressorParameter& mParameter;
};
} // namespace
 
CompressorEditor::CompressorEditor(
   wxWindow* parent, CompressorInstance& instance, bool isRealtime,
   const EffectUIServices& services, EffectSettingsAccess& access,
   CompressorSettings settings)
    : DynamicRangeProcessorEditor { parent, instance, isRealtime, services,
                                    access }
    , mSettings { std::move(settings) }
{
   Initialize({ { mSettings.thresholdDb, compressorThresholdDbAttributes,
                  std::make_shared<ParameterWrapper>(thresholdDb),
                  ControllerCategory::CompressionCurve },
                { mSettings.makeupGainDb, compressorMakupGainDbAttributes,
                  std::make_shared<ParameterWrapper>(makeupGainDb),
                  ControllerCategory::CompressionCurve },
                { mSettings.kneeWidthDb, kneeWidthDbAttributes,
                  std::make_shared<ParameterWrapper>(kneeWidthDb),
                  ControllerCategory::CompressionCurve },
                { mSettings.compressionRatio, compressionRatioAttributes,
                  std::make_shared<ParameterWrapper>(compressionRatio),
                  ControllerCategory::CompressionCurve },
                { mSettings.lookaheadMs, lookaheadMsAttributes,
                  std::make_shared<ParameterWrapper>(lookaheadMs),
                  ControllerCategory::TimeSmoothing },
                { mSettings.attackMs, attackMsAttributes,
                  std::make_shared<ParameterWrapper>(attackMs),
                  ControllerCategory::TimeSmoothing },
                { mSettings.releaseMs, releaseMsAttributes,
                  std::make_shared<ParameterWrapper>(releaseMs),
                  ControllerCategory::TimeSmoothing } });
}