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

  Audacity: A Digital Audio Editor

  Fade.cpp

  Robert Leidle

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

#include "Fade.h"
#include "../WaveTrack.h"

#include <wx/generic/textdlgg.h>
#include <math.h>

bool EffectFadeIn::NewTrackSimpleMono()
{
   mLen = (int)((mCurT1 - mCurT0) * mCurRate + 0.5);
   mSample = 0;

   return true;
}

bool EffectFadeIn::ProcessSimpleMono(float *buffer, sampleCount len)
{
   for (sampleCount i = 0; i < len; i++)
      buffer[i] = (float) (buffer[i] * (float) (mSample + i)
                           / (float) (mLen));
   mSample += len;

   return true;
}

bool EffectFadeOut::NewTrackSimpleMono()
{
   mLen = (int)((mCurT1 - mCurT0) * mCurRate + 0.5);
   mSample = 0;

   return true;
}

bool EffectFadeOut::ProcessSimpleMono(float *buffer, sampleCount len)
{
   for (sampleCount i = 0; i < len; i++)
      buffer[i] = (float) (buffer[i]
                           * (float) (mLen - 1 - (mSample + i))
                           / (float) (mLen));
   mSample += len;

   return true;
}

// 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: cd703234-7ddd-4d78-b878-2847d0f014a4

