Locate and position the current Audacity source code, and clear a variety of old junk out of the way into junk-branches

src/effects/ChangeTempo.h

@@ -0,0 +1,144 @@
+/**********************************************************************
+
+  Audacity: A Digital Audio Editor
+
+  ChangeTempo.h
+
+  Vaughan Johnson, Dominic Mazzoni
+  
+  Change Tempo effect provides speeding up or 
+  slowing down tempo without changing pitch.
+
+**********************************************************************/
+
+#if USE_SOUNDTOUCH
+
+#ifndef __AUDACITY_EFFECT_CHANGETEMPO__
+#define __AUDACITY_EFFECT_CHANGETEMPO__
+
+#include "SoundTouchEffect.h"
+
+#include <wx/intl.h>
+#include <wx/dialog.h>
+#include <wx/slider.h>
+
+class wxString;
+class wxTextCtrl;
+
+
+class EffectChangeTempo : public EffectSoundTouch {
+
+ public:
+   EffectChangeTempo();
+
+   virtual wxString GetEffectName() {
+      return wxString(_("Change Tempo..."));
+   }
+
+   virtual std::set<wxString> GetEffectCategories() {
+      std::set<wxString> result;
+      result.insert(wxT("http://audacityteam.org/namespace#PitchAndTempo"));
+      return result;
+   }
+
+   virtual wxString GetEffectIdentifier() {
+      return wxString(wxT("ChangeTempo"));
+   }
+
+   virtual wxString GetEffectAction() {
+      return wxString(_("Changing Tempo"));
+   }
+   
+   // Useful only after PromptUser values have been set. 
+   virtual wxString GetEffectDescription(); 
+
+   virtual bool Init();
+
+   virtual bool PromptUser();
+   virtual bool TransferParameters( Shuttle & shuttle );
+
+   virtual bool CheckWhetherSkipEffect() { return (m_PercentChange == 0.0); }
+   virtual bool Process();
+  
+ private:
+   double			m_PercentChange;	// percent change to apply to tempo
+												// -100% is meaningless, but sky's the upper limit
+   unsigned int	m_FromBPM;			// user-set beats-per-minute. Zero means not yet set.
+   unsigned int	m_ToBPM;				// Zero value means not yet set.
+   double			m_FromLength;		// starting length of selection
+   double			m_ToLength;			// target length of selection
+
+friend class ChangeTempoDialog;
+};
+
+//----------------------------------------------------------------------------
+// ChangeTempoDialog
+//----------------------------------------------------------------------------
+
+class ChangeTempoDialog:public EffectDialog {
+ public:
+   ChangeTempoDialog(EffectChangeTempo * effect, 
+							wxWindow * parent);
+
+   void PopulateOrExchange(ShuttleGui & S);
+   bool TransferDataToWindow();
+   bool TransferDataFromWindow();
+
+ private:
+	// handlers
+	void OnText_PercentChange(wxCommandEvent & event);
+   void OnSlider_PercentChange(wxCommandEvent & event);
+   void OnText_FromBPM(wxCommandEvent & event); 
+   void OnText_ToBPM(wxCommandEvent & event); 
+   void OnText_ToLength(wxCommandEvent & event); 
+
+   void OnPreview( wxCommandEvent &event );
+
+	// helper fns
+	void Update_Text_PercentChange(); // Update control per current m_PercentChange.
+   void Update_Slider_PercentChange(); // Update control per current m_PercentChange.
+	void Update_Text_ToBPM(); // Use m_FromBPM & m_PercentChange to set new m_ToBPM & control.
+	void Update_Text_ToLength(); // Use m_FromLength & m_PercentChange to set new m_ToLength & control.
+
+ private:
+	EffectChangeTempo * mEffect;
+   bool m_bLoopDetect;
+
+   // controls
+   wxTextCtrl *	m_pTextCtrl_PercentChange;
+   wxSlider *		m_pSlider_PercentChange;
+   wxTextCtrl *	m_pTextCtrl_FromBPM;
+   wxTextCtrl *	m_pTextCtrl_ToBPM;
+   wxTextCtrl *	m_pTextCtrl_FromLength;
+   wxTextCtrl *	m_pTextCtrl_ToLength;
+
+ public:
+	// effect parameters
+   double			m_PercentChange;	// percent change to apply to tempo
+												// -100% is meaningless, but sky's the upper limit.
+												// Slider is (-100, 200], but textCtrls can set higher.
+   unsigned int	m_FromBPM;			// user-set beats-per-minute. Zero means not yet set.
+   unsigned int	m_ToBPM;				// Zero value means not yet set.
+   double			m_FromLength;		// starting length of selection
+   double			m_ToLength;			// target length of selection
+
+ private:
+   DECLARE_EVENT_TABLE()
+};
+
+
+#endif // __AUDACITY_EFFECT_CHANGETEMPO__
+
+#endif // USE_SOUNDTOUCH
+
+// Indentation settings for Vim and Emacs and unique identifier for Arch, a
+// version control system. Please do not modify past this point.
+//
+// Local Variables:
+// c-basic-offset: 3
+// indent-tabs-mode: nil
+// End:
+//
+// vim: et sts=3 sw=3
+// arch-tag: d5538ef9-b7b0-4dd9-a23b-8cce354262a8
+