WideSampleSequence.cpp

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/**********************************************************************
 
Audacity: A Digital Audio Editor
 
WideSampleSequence.cpp
 
Paul Licameli split from SampleFrame.cpp
 
**********************************************************************/
#include "WideSampleSequence.h"
#include <cmath>
 
WideSampleSequence::~WideSampleSequence() = default;
 
sampleCount WideSampleSequence::TimeToLongSamples(double t0) const
{
   return sampleCount(floor(t0 * GetRate() + 0.5));
}
 
double WideSampleSequence::LongSamplesToTime(sampleCount pos) const
{
   return pos.as_double() / GetRate();
}
 
double WideSampleSequence::SnapToSample(double t) const
{
   return LongSamplesToTime(TimeToLongSamples(t));
}
 
bool WideSampleSequence::GetFloats(size_t iChannel, size_t nBuffers,
   float *const buffers[], sampleCount start, size_t len,
   bool backwards, fillFormat fill,
   bool mayThrow, sampleCount* pNumWithinClips) const
{
   // Cast the pointers to pass them to DoGet() which handles multiple
   // destination formats
   const auto castBuffers = reinterpret_cast<const samplePtr*>(buffers);
   const auto result = DoGet(
      iChannel, nBuffers, castBuffers,
      floatSample, start, len, backwards, fill, mayThrow, pNumWithinClips);
   if (!result)
      while (nBuffers--)
         ClearSamples(castBuffers[nBuffers], floatSample, 0, len);
   return result;
}