Dither.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  Steve Harris
  Markus Meyer
 
**********************************************************************/
 
#ifndef __AUDACITY_DITHER_H__
#define __AUDACITY_DITHER_H__
 
#include "SampleFormat.h"
 
template< typename Enum > class EnumSetting;
 
 
enum DitherType : unsigned {
   none = 0, rectangle = 1, triangle = 2, shaped = 3 };
 
class MATH_API Dither
{
public:
    static DitherType FastDitherChoice();
    static DitherType BestDitherChoice();
 
    static EnumSetting< DitherType > FastSetting;
    static EnumSetting< DitherType > BestSetting;
 
    Dither();
 
    void Reset();
 
    void Apply(DitherType ditherType,
               constSamplePtr source, sampleFormat sourceFormat,
               samplePtr dest, sampleFormat destFormat,
               unsigned int len,
               unsigned int sourceStride = 1,
               unsigned int destStride = 1);
};
 
#endif /* __AUDACITY_DITHER_H__ */