MpAuRead Class Reference

#include <mpau.h>

Inheritance diagram for MpAuRead:

Collaboration diagram for MpAuRead:

Public Types
enum	AuDecompressionType { DeG711MuLaw = 1, DePcm8Unsigned, DePcm16MsbSigned }

Public Member Functions
	MpAuRead (istream &s, int raw=0)
	~MpAuRead ()
size_t	getSamples (AudioSample *buffer, size_t numSamples)
	Returns number of samples actually read, 0 on error. More...
size_t	readBytes (AudioByte *buffer, size_t length)
	read length of bytes More...
int	getDecompressionType ()
	get decompression type of the audio file More...
size_t	getBytesSize ()
	get bytes size of the audio file More...
Public Member Functions inherited from MpAudioAbstract
	MpAudioAbstract (void)
	Default Constructor. More...
	MpAudioAbstract (MpAudioAbstract *audio)
	Copy Constructor. More...
virtual	~MpAudioAbstract ()
	Destructor. More...
MpAudioAbstract *	getPreviousAudio (void)
	get previous audio More...
void	setPreviousAudio (MpAudioAbstract *a)
	set previous audio to a More...
MpAudioAbstract *	getNextAudio (void)
	get next audio More...
void	setNextAudio (MpAudioAbstract *a)
	set next audio to a More...
virtual void	setSamplingRate (long s)
	Set the sampling rate to s. More...
virtual void	setSamplingRateRecursive (long s)
	Set sampling rate recursively. More...
virtual void	negotiateSamplingRate (void)
	negotiate the sampling rate More...
virtual long	getSamplingRate (void)
	Return the sampling rate. More...
virtual void	setChannels (int ch)
	Set channel to ch. More...
virtual void	setChannelsRecursive (int s)
	Set channel recusively. More...
virtual void	negotiateChannels (void)
	negotiate channel More...
virtual int	getChannels (void)
	Return the channels. More...
virtual void	setAudioFormat (int type)
	Set audio object format. More...
virtual int	getAudioFormat ()
	Get audio object format. More...
bool	isOk ()
	Return true if file loaded ok. More...

Protected Member Functions
void	minMaxSamplingRate (long *min, long *max, long *preferred)
	TODO: the meaning of this function, get the prefered Sampling rate. More...
void	minMaxChannels (int *min, int *max, int *preferred)
	Get prefered channel. More...

Private Member Functions
void	ReadHeader (void)

Private Attributes
istream &	mStream
int	m_CompressionType
AbstractDecompressor *	_decoder
size_t	_dataLength
bool	_headerRead
	true if header has already been read More...
int	_headerChannels
	channels from header More...
int	_headerRate
	sampling rate from header More...

Additional Inherited Members
Protected Attributes inherited from MpAudioAbstract
bool	mbIsOk
	If file loaded ok. More...

Member Enumeration Documentation

enum AuDecompressionType

Enumerator
DeG711MuLaw
DePcm8Unsigned
DePcm16MsbSigned

Constructor & Destructor Documentation

MpAuRead	(	istream &	s,
		int	raw = 0
	)

~MpAuRead ( )

inline

Member Function Documentation

size_t getSamples ( AudioSample *  , size_t    )

inlinevirtual

Returns number of samples actually read, 0 on error.

Implements MpAudioAbstract.

size_t readBytes ( AudioByte *  buff, size_t  length  )

virtual

read length of bytes

Reimplemented from MpAudioAbstract.

int getDecompressionType ( )

inlinevirtual

get decompression type of the audio file

Reimplemented from MpAudioAbstract.

size_t getBytesSize ( )

virtual

get bytes size of the audio file

Reimplemented from MpAudioAbstract.

void ReadHeader ( void  )

private

void minMaxSamplingRate ( long *  min, long *  max, long *  prefer  )

inlineprotectedvirtual

TODO: the meaning of this function, get the prefered Sampling rate.

Reimplemented from MpAudioAbstract.

void minMaxChannels ( int *  min, int *  max, int *  preferred  )

inlineprotectedvirtual

Get prefered channel.

Reimplemented from MpAudioAbstract.

Member Data Documentation

istream& mStream

private

int m_CompressionType

private

AbstractDecompressor* _decoder

private

size_t _dataLength

private

bool _headerRead

private

true if header has already been read

int _headerChannels

private

channels from header

int _headerRate

private

sampling rate from header