bassboost.h

Audacity是一款用於錄音和編輯聲音的、免費的開放源碼軟體。它可以執行於Mac OS X、Microsoft Windows、GNU/Linux和其它作業系統

/**********************************************************************

  Audacity: A Digital Audio Editor

  Bass Boost

  Effect programming:
  Nasca Octavian Paul

  UI programming:
  Dominic Mazzoni (with the help of wxDesigner)

**********************************************************************/

#ifndef __AUDACITY_EFFECT_BASS_BOOST__
#define __AUDACITY_EFFECT_BASS_BOOST__

#include "SimpleMono.h"

#include <wx/dialog.h>
#include <wx/intl.h>
#include <wx/slider.h>

// Declare window functions

#define ID_FREQ_TEXT    10001
#define ID_FREQ_SLIDER  10002
#define ID_BOOST_TEXT   10003
#define ID_BOOST_SLIDER 10004

class wxSizer;
class wxTextCtrl;

class WaveTrack;

class EffectBassBoost:public EffectSimpleMono {

 public:
   EffectBassBoost();

   virtual wxString GetEffectName() {
      return wxString(_("BassBoost..."));
   }
   
   virtual wxString GetEffectAction() {
      return wxString(_("Boosting Bass Frequencies"));
   }
   
   // Useful only after PromptUser values have been set. 
   virtual wxString GetEffectDescription(); 

   virtual bool PromptUser();
   virtual bool TransferParameters( Shuttle & shuttle );
   
 protected:

   virtual bool NewTrackSimpleMono();

   virtual bool ProcessSimpleMono(float *buffer, sampleCount len);
   
   float frequency, dB_boost;
   //filter parameters
   float xn1,xn2,yn1,yn2;
   float omega, sn, cs, a, shape, beta, b0, b1, b2, a0, a1, a2;

   friend class BassBoostDialog;
};

// WDR: class declarations

//----------------------------------------------------------------------------
// BassBoostDialog
//----------------------------------------------------------------------------

class BassBoostDialog:public wxDialog {
 public:
   // constructors and destructors
   BassBoostDialog(EffectBassBoost *effect,
                   wxWindow * parent, wxWindowID id,
                   const wxString & title, const wxPoint & pos =
                   wxDefaultPosition, const wxSize & size =
                   wxDefaultSize, long style = wxDEFAULT_DIALOG_STYLE);

   // WDR: method declarations for BassBoostDialog
   wxSlider *GetBoostSlider() {
      return (wxSlider *) FindWindow(ID_BOOST_SLIDER);
   } wxSlider *GetFreqSlider() {
      return (wxSlider *) FindWindow(ID_FREQ_SLIDER);
   }
   wxTextCtrl *GetBoostText() {
      return (wxTextCtrl *) FindWindow(ID_BOOST_TEXT);
   }
   wxTextCtrl *GetFreqText() {
      return (wxTextCtrl *) FindWindow(ID_FREQ_TEXT);
   }
   virtual bool Validate();
   virtual bool TransferDataToWindow();
   virtual bool TransferDataFromWindow();

 private:
   wxSizer *MakeBassBoostDialog(wxWindow * parent, bool call_fit,
                             bool set_sizer);

 private:
   // WDR: handler declarations for BassBoostDialog
   void OnBoostText(wxCommandEvent & event);
   void OnFreqText(wxCommandEvent & event);
   void OnBoostSlider(wxCommandEvent & event);
   void OnFreqSlider(wxCommandEvent & event);
   void OnPreview(wxCommandEvent & event);
   void OnOk(wxCommandEvent & event);
   void OnCancel(wxCommandEvent & event);

 private:
   DECLARE_EVENT_TABLE()

 public:
   EffectBassBoost *mEffect;

   float freq;
   float boost;

};



#endif

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// version control system. Please do not modify past this point.
//
// Local Variables:
// c-basic-offset: 3
// indent-tabs-mode: nil
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//
// vim: et sts=3 sw=3
// arch-tag: b45174f7-ee03-4245-8de5-d75e16bd7009