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

src/CrossFade.h

@@ -0,0 +1,63 @@
+/**********************************************************************
+
+  Audacity: A Digital Audio Editor
+
+  CrossFade.h
+
+ (c) 2005 The Audacity Team
+  Licensed under the GPL version 2.0 
+
+**********************************************************************/
+#ifndef __AUDACITY_CROSSFADE__
+#define __AUDACITY_CROSSFADE__
+
+/// This defines a crossfader class that 
+/// accepts a list of WaveClips and can do a mini-mixing
+/// to produce the desired crossfading 
+
+#include "SampleFormat.h"
+#include "Resample.h"
+#include "WaveClip.h"
+
+
+enum FadeType
+  {
+	FT_MIX,
+	FT_TRIANGULAR,
+	FT_EXPONENTIAL
+  };
+
+class CrossFader
+{
+
+ public:
+  CrossFader();
+  ~CrossFader();
+
+  //This sets a crossfade mode where the overlapping
+  //tracks are simply mixed equally.
+  void SetMixCrossFade(){mType = FT_MIX;};
+  void SetTriangularCrossFade(){mType = FT_TRIANGULAR;};
+  void SetExponentialCrossFade(){mType = FT_EXPONENTIAL;};
+  
+  void AddClip( WaveClip * clip);
+  void ClearClips();
+  //Produces samples according to crossfading rules.
+  bool  GetSamples(samplePtr buffer, sampleFormat format, 
+				   sampleCount start, sampleCount len);
+  
+ protected:
+  WaveClipList mClips;
+
+ private:
+  
+  bool CrossFadeMix(samplePtr buffer, sampleFormat format, sampleCount start, sampleCount len);
+
+  FadeType mType;
+
+
+};
+
+
+
+#endif