anonymous_namespace{Sequence.cpp} Namespace Reference

Functions
void	ensureSampleBufferSize (SampleBuffer &buffer, sampleFormat format, size_t &size, size_t required, SampleBuffer *pSecondBuffer=nullptr)
bool	Overflows (double numSamples)
SampleBlockPtr	ShareOrCopySampleBlock (SampleBlockFactory *pFactory, sampleFormat format, SampleBlockPtr sb)

Function Documentation

ensureSampleBufferSize()

void anonymous_namespace{Sequence.cpp}::ensureSampleBufferSize	(	SampleBuffer &	buffer,
		sampleFormat	format,
		size_t &	size,
		size_t	required,
		SampleBuffer *	pSecondBuffer = nullptr
	)

Definition at line 106 of file Sequence.cpp.

   {
      // This should normally do nothing, but it is a defense against corrupt
      // projects than might have inconsistent block files bigger than the
      // expected maximum size.
      if (size < required) {
         // reallocate
         buffer.Allocate(required, format);
         if (pSecondBuffer && pSecondBuffer->ptr())
            pSecondBuffer->Allocate(required, format);
         if (!buffer.ptr() || (pSecondBuffer && !pSecondBuffer->ptr())) {
            // malloc failed
            // Perhaps required is a really crazy value,
            // and perhaps we should throw an AudacityException, but that is
            // a second-order concern
            THROW_INCONSISTENCY_EXCEPTION;
         }
         size = required;
      }
   }

References SampleBuffer::Allocate(), anonymous_namespace{ExportPCM.cpp}::format, SampleBuffer::ptr(), size, and THROW_INCONSISTENCY_EXCEPTION.

Referenced by Sequence::ConvertToSampleFormat(), Sequence::Copy(), Sequence::Delete(), and Sequence::SetSamples().

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Overflows()

bool anonymous_namespace{Sequence.cpp}::Overflows ( double  numSamples )

inline

Definition at line 467 of file Sequence.cpp.

   {
      return numSamples > wxLL(9223372036854775807);
   }

Referenced by Sequence::AppendBlock(), Sequence::AppendSharedBlock(), Sequence::DoAppend(), Sequence::InsertSilence(), and Sequence::Paste().

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ShareOrCopySampleBlock()

SampleBlockPtr anonymous_namespace{Sequence.cpp}::ShareOrCopySampleBlock	(	SampleBlockFactory *	pFactory,
		sampleFormat	format,
		SampleBlockPtr	sb
	)

Definition at line 472 of file Sequence.cpp.

   {
      if ( pFactory ) {
         // must copy contents to a fresh SampleBlock object in another database
         auto sampleCount = sb->GetSampleCount();
         SampleBuffer buffer{ sampleCount, format };
         sb->GetSamples( buffer.ptr(), format, 0, sampleCount );
         sb = pFactory->Create( buffer.ptr(), sampleCount, format );
      }
      else
         // Can just share
         ;
      return sb;
   }

References SampleBlockFactory::Create(), and anonymous_namespace{ExportPCM.cpp}::format.

Referenced by Sequence::AppendBlock(), and Sequence::Paste().

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