SampleBlock.cpp

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/**********************************************************************
 
Audacity: A Digital Audio Editor
 
SampleBlock.cpp
 
**********************************************************************/
 
 
#include "InconsistencyException.h"
#include "SampleBlock.h"
#include "SampleFormat.h"
 
#include <wx/defs.h>
 
SampleBlockFactoryPtr SampleBlockFactory::New( AudacityProject &project )
{
   auto &factory = Factory::Get();
   if ( ! factory )
      THROW_INCONSISTENCY_EXCEPTION;
   return factory( project );
}
 
SampleBlockFactory::~SampleBlockFactory() = default;
 
SampleBlockPtr SampleBlockFactory::Create(constSamplePtr src,
   size_t numsamples,
   sampleFormat srcformat)
{
   auto result = DoCreate(src, numsamples, srcformat);
   if (!result)
      THROW_INCONSISTENCY_EXCEPTION;
   Publisher<SampleBlockCreateMessage>::Publish({});
   return result;
}
 
SampleBlockPtr SampleBlockFactory::CreateSilent(
   size_t numsamples,
   sampleFormat srcformat)
{
   auto result = DoCreateSilent(numsamples, srcformat);
   if (!result)
      THROW_INCONSISTENCY_EXCEPTION;
   Publisher<SampleBlockCreateMessage>::Publish({});
   return result;
}
 
SampleBlockPtr SampleBlockFactory::CreateFromXML(
   sampleFormat srcformat,
   const AttributesList &attrs)
{
   auto result = DoCreateFromXML(srcformat, attrs);
   if (!result)
      THROW_INCONSISTENCY_EXCEPTION;
   Publisher<SampleBlockCreateMessage>::Publish({});
   return result;
}
 
SampleBlockPtr SampleBlockFactory::CreateFromId(
   sampleFormat srcformat, SampleBlockID id)
{
   auto result = DoCreateFromId(srcformat, id);
   if (!result)
      THROW_INCONSISTENCY_EXCEPTION;
   Publisher<SampleBlockCreateMessage>::Publish({});
   return result;
}
 
SampleBlock::~SampleBlock() = default;
 
size_t SampleBlock::GetSamples(samplePtr dest,
                   sampleFormat destformat,
                   size_t sampleoffset,
                   size_t numsamples, bool mayThrow)
{
   try{ return DoGetSamples(dest, destformat, sampleoffset, numsamples); }
   catch( ... ) {
      if( mayThrow )
         throw;
      ClearSamples( dest, destformat, 0, numsamples );
      return 0;
   }
}
 
 MinMaxRMS SampleBlock::GetMinMaxRMS(
                        size_t start, size_t len, bool mayThrow)
{
   try{ return DoGetMinMaxRMS(start, len); }
   catch( ... ) {
      if( mayThrow )
         throw;
      return {};
   }
}
 
 MinMaxRMS SampleBlock::GetMinMaxRMS(bool mayThrow) const
{
   try{ return DoGetMinMaxRMS(); }
   catch( ... ) {
      if( mayThrow )
         throw;
      return {};
   }
}