SampleFormats Class Reference

Two sample formats, remembering format of original source and describing stored format. More...

#include <SampleFormat.h>

Public Member Functions
	SampleFormats (sampleFormat effective, sampleFormat stored)
sampleFormat	Effective () const
sampleFormat	Stored () const
void	UpdateEffective (sampleFormat effective)
	Update the effective format, for insertion of more samples into the sequence. More...

Private Attributes
sampleFormat	m_Effective
sampleFormat	m_Stored

Detailed Description

Two sample formats, remembering format of original source and describing stored format.

Useful when imported data are stored temporarily in a wider format but should be exported bit-perfect without dither if to the original format again

Invariant

Effective() <= Stored()

Definition at line 79 of file SampleFormat.h.

Constructor & Destructor Documentation

SampleFormats()

SampleFormats::SampleFormats ( sampleFormat  effective, sampleFormat  stored  )

inline

Construct sampleFormats, but may change effective to satisfy the invariant

Parameters

effective	How much real information in each sample
stored	The form used for storage

Definition at line 82 of file SampleFormat.h.

      : m_Effective{ std::min( effective, stored ) }
      , m_Stored{ stored }
   {}

Member Function Documentation

Effective()

sampleFormat SampleFormats::Effective ( ) const

inline

Definition at line 90 of file SampleFormat.h.

{ return m_Effective; }

References m_Effective.

Referenced by Sequence::ConvertToSampleFormat(), Sequence::Copy(), Sequence::HandleXMLTag(), operator==(), and Sequence::Paste().

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Stored()

sampleFormat SampleFormats::Stored ( ) const

inline

Definition at line 91 of file SampleFormat.h.

{ return m_Stored; }

References m_Stored.

Referenced by Sequence::Append(), Sequence::ConvertToSampleFormat(), Sequence::Copy(), Sequence::Delete(), Sequence::DoAppend(), Sequence::Flush(), anonymous_namespace{WaveDataCache.cpp}::AppendBufferHelper::GetAppendBufferPointer(), Sequence::HandleXMLTag(), Sequence::InsertSilence(), operator==(), WaveClip::Paste(), Sequence::Paste(), Sequence::SetSamples(), and Sequence::SetSilence().

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UpdateEffective()

void SampleFormats::UpdateEffective ( sampleFormat  effective )

inline

Update the effective format, for insertion of more samples into the sequence.

GetEffective() will not necessarily equal the given value, because the invariant will be preserved, and also GetEffective() will never become narrower than before: if any material in the sequence had a wider format, assume that the whole sequence still requires dithering to lesser formats than that.

Definition at line 98 of file SampleFormat.h.

   {
      if (effective > m_Effective)
         m_Effective = std::min(effective, m_Stored);
   }

References m_Effective, m_Stored, and min().

Referenced by Sequence::Append(), Sequence::AppendNewBlock(), Sequence::Flush(), Sequence::Paste(), and Sequence::SetSamples().

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Member Data Documentation

m_Effective

sampleFormat SampleFormats::m_Effective

private

Definition at line 105 of file SampleFormat.h.

Referenced by Effective(), and UpdateEffective().

m_Stored

sampleFormat SampleFormats::m_Stored

private

Definition at line 106 of file SampleFormat.h.

Referenced by Stored(), and UpdateEffective().

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The documentation for this class was generated from the following file:

• SampleFormat.h