Inheritance diagram for juce::MemoryMappedWavReader:

Public Member Functions
	MemoryMappedWavReader (const File &wavFile, const WavAudioFormatReader &reader)
bool	readSamples (int **destSamples, int numDestChannels, int startOffsetInDestBuffer, int64 startSampleInFile, int numSamples) override
void	getSample (int64 sample, float *result) const noexcept override
void	readMaxLevels (int64 startSampleInFile, int64 numSamples, Range< float > *results, int numChannelsToRead) override
virtual void	readMaxLevels (int64 startSample, int64 numSamples, float &lowestLeft, float &highestLeft, float &lowestRight, float &highestRight)
Public Member Functions inherited from juce::MemoryMappedAudioFormatReader
const File &	getFile () const noexcept
bool	mapEntireFile ()
virtual bool	mapSectionOfFile (Range< int64 > samplesToMap)
Range< int64 >	getMappedSection () const noexcept
void	touchSample (int64 sample) const noexcept
size_t	getNumBytesUsed () const
Public Member Functions inherited from juce::AudioFormatReader
virtual	~AudioFormatReader ()
const String &	getFormatName () const noexcept
bool	read (float const destChannels, int numDestChannels, int64 startSampleInSource, int numSamplesToRead)
bool	read (int const destChannels, int numDestChannels, int64 startSampleInSource, int numSamplesToRead, bool fillLeftoverChannelsWithCopies)
bool	read (AudioBuffer< float > *buffer, int startSampleInDestBuffer, int numSamples, int64 readerStartSample, bool useReaderLeftChan, bool useReaderRightChan)
int64	searchForLevel (int64 startSample, int64 numSamplesToSearch, double magnitudeRangeMinimum, double magnitudeRangeMaximum, int minimumConsecutiveSamples)
virtual AudioChannelSet	getChannelLayout ()

Private Member Functions
template<typename SampleType>
void	scanMinAndMax (int64 startSampleInFile, int64 numSamples, Range< float > *results, int numChannelsToRead) const noexcept

Additional Inherited Members
Public Attributes inherited from juce::AudioFormatReader
double	sampleRate = 0
unsigned int	bitsPerSample = 0
int64	lengthInSamples = 0
unsigned int	numChannels = 0
bool	usesFloatingPointData = false
StringPairArray	metadataValues
InputStream *	input
Protected Member Functions inherited from juce::MemoryMappedAudioFormatReader
	MemoryMappedAudioFormatReader (const File &file, const AudioFormatReader &details, int64 dataChunkStart, int64 dataChunkLength, int bytesPerFrame)
int64	sampleToFilePos (int64 sample) const noexcept
int64	filePosToSample (int64 filePos) const noexcept
const void *	sampleToPointer (int64 sample) const noexcept
template<typename SampleType, typename Endianness>
Range< float >	scanMinAndMaxInterleaved (int channel, int64 startSampleInFile, int64 numSamples) const noexcept
Protected Member Functions inherited from juce::AudioFormatReader
	AudioFormatReader (InputStream *sourceStream, const String &formatName)
Static Protected Member Functions inherited from juce::AudioFormatReader
static void	clearSamplesBeyondAvailableLength (int **destChannels, int numDestChannels, int startOffsetInDestBuffer, int64 startSampleInFile, int &numSamples, int64 fileLengthInSamples)
Protected Attributes inherited from juce::MemoryMappedAudioFormatReader
File	file
Range< int64 >	mappedSection
std::unique_ptr< MemoryMappedFile >	map
int64	dataChunkStart
int64	dataLength
int	bytesPerFrame

Constructor & Destructor Documentation

◆ MemoryMappedWavReader()

juce::MemoryMappedWavReader::MemoryMappedWavReader	(	const File &	wavFile,
		const WavAudioFormatReader &	reader )

inline

Member Function Documentation

◆ getSample()

void juce::MemoryMappedWavReader::getSample	(	int64	sampleIndex,
		float *	result ) const

inlineoverridevirtualnoexcept

Returns the samples for all channels at a given sample position. The result array must be large enough to hold a value for each channel that this reader contains.

Implements juce::MemoryMappedAudioFormatReader.

◆ readMaxLevels() [1/2]

void juce::AudioFormatReader::readMaxLevels	(	int64	startSample,
		int64	numSamples,
		float &	lowestLeft,
		float &	highestLeft,
		float &	lowestRight,
		float &	highestRight )

virtual

Finds the highest and lowest sample levels from a section of the audio stream.

This will read a block of samples from the stream, and measure the highest and lowest sample levels from the channels in that section, returning these as normalised floating-point levels.

Parameters

startSample	the offset into the audio stream to start reading from. It's ok for this to be beyond the start or end of the stream.
numSamples	how many samples to read
lowestLeft	on return, this is the lowest absolute sample from the left channel
highestLeft	on return, this is the highest absolute sample from the left channel
lowestRight	on return, this is the lowest absolute sample from the right channel (if there is one)
highestRight	on return, this is the highest absolute sample from the right channel (if there is one)

See also: read

Reimplemented from juce::AudioFormatReader.

◆ readMaxLevels() [2/2]

void juce::MemoryMappedWavReader::readMaxLevels	(	int64	startSample,
		int64	numSamples,
		Range< float > *	results,
		int	numChannelsToRead )

inlineoverridevirtual

Finds the highest and lowest sample levels from a section of the audio stream.

This will read a block of samples from the stream, and measure the highest and lowest sample levels from the channels in that section, returning these as normalised floating-point levels.

Parameters

startSample	the offset into the audio stream to start reading from. It's ok for this to be beyond the start or end of the stream.
numSamples	how many samples to read
results	this array will be filled with Range values for each channel. The array must contain numChannels elements.
numChannelsToRead	the number of channels of data to scan. This must be more than zero, but not more than the total number of channels that the reader contains

See also: read

Reimplemented from juce::AudioFormatReader.

◆ readSamples()

bool juce::MemoryMappedWavReader::readSamples	(	int **	destChannels,
		int	numDestChannels,
		int	startOffsetInDestBuffer,
		int64	startSampleInFile,
		int	numSamples )

inlineoverridevirtual

Subclasses must implement this method to perform the low-level read operation.

Callers should use read() instead of calling this directly.

Parameters

destChannels	the array of destination buffers to fill. Some of these pointers may be null
numDestChannels	the number of items in the destChannels array. This value is guaranteed not to be greater than the number of channels that this reader object contains
startOffsetInDestBuffer	the number of samples from the start of the dest data at which to begin writing
startSampleInFile	the number of samples into the source data at which to begin reading. This value is guaranteed to be >= 0.
numSamples	the number of samples to read

Implements juce::AudioFormatReader.

◆ scanMinAndMax()

template<typename SampleType>

void juce::MemoryMappedWavReader::scanMinAndMax	(	int64	startSampleInFile,
		int64	numSamples,
		Range< float > *	results,
		int	numChannelsToRead ) const

inlineprivatenoexcept

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

/home/runner/work/lmms-fork/lmms-fork/plugins/CarlaBase/carla/source/modules/juce_audio_formats/codecs/juce_WavAudioFormat.cpp

Public Member Functions

Private Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ MemoryMappedWavReader()

Member Function Documentation

◆ getSample()

◆ readMaxLevels() [1/2]

◆ readMaxLevels() [2/2]

◆ readSamples()

◆ scanMinAndMax()