Inheritance diagram for 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

Public Member Functions inherited from MemoryMappedAudioFormatReader
const File &	getFile () const noexcept

bool	mapEntireFile ()

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 AudioFormatReader
virtual	~AudioFormatReader ()

const String &	getFormatName () const noexcept

bool	read (int const destSamples, int numDestChannels, int64 startSampleInSource, int numSamplesToRead, bool fillLeftoverChannelsWithCopies)

void	read (AudioSampleBuffer *buffer, int startSampleInDestBuffer, int numSamples, int64 readerStartSample, bool useReaderLeftChan, bool useReaderRightChan)

virtual void	readMaxLevels (int64 startSample, int64 numSamples, float &lowestLeft, float &highestLeft, float &lowestRight, float &highestRight)

int64	searchForLevel (int64 startSample, int64 numSamplesToSearch, double magnitudeRangeMinimum, double magnitudeRangeMaximum, int minimumConsecutiveSamples)

Additional Inherited Members
Public Attributes inherited from AudioFormatReader
double	sampleRate

unsigned int	bitsPerSample

int64	lengthInSamples

unsigned int	numChannels

bool	usesFloatingPointData

StringPairArray	metadataValues

InputStream *	input

Protected Member Functions inherited from 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 AudioFormatReader
	AudioFormatReader (InputStream *sourceStream, const String &formatName)

Static Protected Member Functions inherited from AudioFormatReader
static void	clearSamplesBeyondAvailableLength (int **destSamples, int numDestChannels, int startOffsetInDestBuffer, int64 startSampleInFile, int &numSamples, int64 fileLengthInSamples)

Protected Attributes inherited from MemoryMappedAudioFormatReader
File	file

Range< int64 >	mappedSection

ScopedPointer< MemoryMappedFile >	map

int64	dataChunkStart

int64	dataLength

int	bytesPerFrame

Constructor & Destructor Documentation

◆ MemoryMappedWavReader()

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

inline

Member Function Documentation

◆ getSample()

void 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 MemoryMappedAudioFormatReader.

◆ readMaxLevels()

void 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 AudioFormatReader.

◆ readSamples()

bool MemoryMappedWavReader::readSamples	(	int **	destSamples,
		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

destSamples	the array of destination buffers to fill. Some of these pointers may be null
numDestChannels	the number of items in the destSamples 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 AudioFormatReader.

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

juce_WavAudioFormat.cpp