DtmfGen.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  DtmfGen.h
 
  Salvo Ventura
  Dec 2006
 
  An effect that generates DTMF tones
 
**********************************************************************/
 
#ifndef __AUDACITY_EFFECT_DTMF__
#define __AUDACITY_EFFECT_DTMF__
 
#include "StatelessPerTrackEffect.h"
#include "ShuttleAutomation.h"
 
class wxSlider;
class wxStaticText;
class wxTextCtrl;
class NumericTextCtrl;
class ShuttleGui;
 
struct DtmfSettings {
   static constexpr wchar_t DefaultSequence[] = L"audacity";
   static constexpr double DefaultDutyCycle = 55.0;
   static constexpr double DefaultAmplitude = 0.8;
 
   wxString dtmfSequence{DefaultSequence}; // dtmf tone string
   size_t dtmfNTones = dtmfSequence.length(); // total number of tones to generate
   double dtmfTone{};               // duration of a single tone in ms
   double dtmfSilence{};            // duration of silence between tones in ms
   double dtmfDutyCycle{DefaultDutyCycle}; // ratio of dtmfTone/(dtmfTone+dtmfSilence)
   double dtmfAmplitude{DefaultAmplitude}; // amplitude of dtmf tone sequence, restricted to (0-1)
 
   void Recalculate(EffectSettings &settings);
};
 
class EffectDtmf final
   : public EffectWithSettings<DtmfSettings, StatelessPerTrackEffect>
{
public:
   static const ComponentInterfaceSymbol Symbol;
 
   EffectDtmf();
   virtual ~EffectDtmf();
 
   // ComponentInterface implementation
 
   ComponentInterfaceSymbol GetSymbol() const override;
   TranslatableString GetDescription() const override;
   ManualPageID ManualPage() const override;
 
   // EffectDefinitionInterface implementation
 
   EffectType GetType() const override;
 
   // Effect implementation
 
   std::unique_ptr<EffectEditor> MakeEditor(
      ShuttleGui & S, EffectInstance &instance,
      EffectSettingsAccess &access, const EffectOutputs *pOutputs)
   const override;
 
   struct Instance;
   std::shared_ptr<EffectInstance> MakeInstance() const override;
 
private:
   // EffectDtmf implementation
 
   static bool MakeDtmfTone(float *buffer, size_t len, float fs,
                     wxChar tone, sampleCount last,
                     sampleCount total, float amplitude);
 
public:
   struct Editor;
 
private:
   const EffectParameterMethods& Parameters() const override;
 
static constexpr EffectParameter Sequence{ &DtmfSettings::dtmfSequence,
   L"Sequence",   DtmfSettings::DefaultSequence, L"", L"", L""};
static constexpr EffectParameter DutyCycle{ &DtmfSettings::dtmfDutyCycle,
   L"Duty Cycle", DtmfSettings::DefaultDutyCycle, 0.0,     100.0,   10.0   };
static constexpr EffectParameter Amplitude{ &DtmfSettings::dtmfAmplitude,
   L"Amplitude",  DtmfSettings::DefaultAmplitude, 0.001,   1.0,     1      };
};
 
#endif