AUD_ReverseReader Class Reference

#include <AUD_ReverseReader.h>

Inheritance diagram for AUD_ReverseReader:

List of all members.

Public Member Functions
	AUD_ReverseReader (AUD_Reference< AUD_IReader > reader)
virtual void	seek (int position)
virtual int	getLength () const
virtual int	getPosition () const
virtual void	read (int &length, bool &eos, sample_t *buffer)

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Detailed Description

This class reads another reader from back to front.

Note:

The underlying reader must be seekable.

Definition at line 40 of file AUD_ReverseReader.h.

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Constructor & Destructor Documentation

AUD_ReverseReader::AUD_ReverseReader

(

AUD_Reference< AUD_IReader >

reader

)

Creates a new reverse reader.

Parameters:

reader

The reader to read from.

Exceptions:

AUD_Exception

Thrown if the reader specified has an undeterminable/infinite length or is not seekable.

Definition at line 37 of file AUD_ReverseReader.cpp.

References AUD_ERROR_PROPS, AUD_THROW, AUD_EffectReader::isSeekable(), and props_error.

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Member Function Documentation

int AUD_ReverseReader::getLength

(

)

const [virtual]

Returns an approximated length of the source in samples.

Returns:

The length as sample count. May be negative if unknown.

Reimplemented from AUD_EffectReader.

Definition at line 51 of file AUD_ReverseReader.cpp.

int AUD_ReverseReader::getPosition

(

)

const [virtual]

Returns the position of the source as a sample count value.

Returns:

The current position in the source. A negative value indicates that the position is unknown.

Warning:

The value returned doesn't always have to be correct for readers, especially after seeking.

Reimplemented from AUD_EffectReader.

Definition at line 56 of file AUD_ReverseReader.cpp.

void AUD_ReverseReader::read	(	int &	length,
		bool &	eos,
		sample_t *	buffer
	)		[virtual]

Request to read the next length samples out of the source. The buffer supplied has the needed size.

Parameters:

[in,out]	length	The count of samples that should be read. Shall contain the real count of samples after reading, in case there were only fewer samples available. A smaller value also indicates the end of the reader.
[out]	eos	End of stream, whether the end is reached or not.
[in]	buffer	The pointer to the buffer to read into.

Reimplemented from AUD_EffectReader.

Definition at line 61 of file AUD_ReverseReader.cpp.

References AUD_CHANNEL_MAX, AUD_SAMPLE_SIZE, AUD_Specs::channels, AUD_EffectReader::getSpecs(), i, len(), length(), and AUD_EffectReader::m_reader.

void AUD_ReverseReader::seek

(

int

position

)

[virtual]

Seeks to a specific position in the source.

Parameters:

position

The position to seek for measured in samples. To get from a given time to the samples you simply have to multiply the time value in seconds with the sample rate of the reader.

Warning:

This may work or not, depending on the actual reader.

Reimplemented from AUD_EffectReader.

Definition at line 46 of file AUD_ReverseReader.cpp.

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

• AUD_ReverseReader.h
• AUD_ReverseReader.cpp