DynamicMemoryStream Class Reference

MemoryStream which is written and read using the internal RAM. For each write the data is allocated on the heap. More...

#include <BaseStream.h>

Inheritance diagram for DynamicMemoryStream:

Public Member Functions
	DynamicMemoryStream ()=default
	DynamicMemoryStream (bool isLoop, int defaultBufferSize=DEFAULT_BUFFER_SIZE, int maxRecords=0)
void	assign (DynamicMemoryStream &ref)
virtual int	available () override
virtual int	availableForWrite () override
virtual bool	begin () override
	Intializes the processing.
void	clear ()
virtual void	end () override
virtual void	flush () override
size_t	getPos ()
	Returns the current read position.
List< DataNode * > &	list ()
	operator bool ()
template<typename T >
void	postProcessSmoothTransition (int channels, float factor=0.01, int remove=0)
	Post processing after the recording. We add a smooth transition at the beginning and at the end.
virtual size_t	readBytes (uint8_t *data, size_t len) override
void	rewind ()
	Sets the read position to the beginning.
void	setConsumeOnRead (bool consume)
	Enable or disable consuming reads (remove records as they are read)
virtual void	setLoop (bool loop)
	Automatically rewinds to the beginning when reaching the end.
void	setMaxRecords (int max_records)
void	setWriteBufferSize (int size)
size_t	size ()
virtual size_t	write (const uint8_t *data, size_t len) override
virtual size_t	write (uint8_t ch) override

Protected Member Functions
void	refillReadBuffer ()
	Refill small read buffer (e.g. 8 bytes) to avoid single byte reads when calling read()

Protected Attributes
int	_timeout = 10
bool	alloc_failed = false
List< DataNode * >	audio_list
bool	consume_on_read = false
int	default_buffer_size =DEFAULT_BUFFER_SIZE
bool	is_loop = false
List< DataNode * >::Iterator	it = audio_list.end()
int	max_records = 0
size_t	read_pos = 0
RingBuffer< uint8_t >	temp_audio {0}
RingBuffer< uint8_t >	tmp_in {0}
RingBuffer< uint8_t >	tmp_out {0}
size_t	total_available = 0
int	write_buffer_size = MAX_SINGLE_CHARS

Detailed Description

MemoryStream which is written and read using the internal RAM. For each write the data is allocated on the heap.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

DynamicMemoryStream() [1/2]

DynamicMemoryStream ( )

default

DynamicMemoryStream() [2/2]

DynamicMemoryStream ( bool  isLoop, int  defaultBufferSize = DEFAULT_BUFFER_SIZE, int  maxRecords = 0  )

inline

Member Function Documentation

assign()

void assign ( DynamicMemoryStream &  ref )

inline

available()

virtual int available ( )

inlineoverridevirtual

Reimplemented from BaseStream.

availableForWrite()

virtual int availableForWrite ( )

inlineoverridevirtual

Reimplemented from BaseStream.

begin()

virtual bool begin ( )

inlineoverridevirtual

Intializes the processing.

Reimplemented from BaseStream.

clear()

void clear ( )

inline

end()

virtual void end ( )

inlineoverridevirtual

Reimplemented from BaseStream.

flush()

virtual void flush ( )

inlineoverridevirtualinherited

Reimplemented from Print.

Reimplemented in PureDataStream, URLStreamBufferedT< T >, URLStreamBufferedT< ICYStream >, AudioStreamWrapper, ResampleStream, URLStream, BufferedTaskStream, I2SStream, MemoryStream, RingBufferStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, and BufferedStream.

getPos()

size_t getPos ( )

inline

Returns the current read position.

list()

List< DataNode * > & list ( )

inline

operator bool()

operator bool ( )

inlineinherited

postProcessSmoothTransition()

template<typename T >

void postProcessSmoothTransition ( int  channels, float  factor = 0.01, int  remove = 0  )

inline

Post processing after the recording. We add a smooth transition at the beginning and at the end.

Template Parameters

T

Parameters

factor

readBytes()

virtual size_t readBytes ( uint8_t *  data, size_t  len  )

inlineoverridevirtual

Implements BaseStream.

refillReadBuffer()

void refillReadBuffer ( )

inlineprotectedinherited

Refill small read buffer (e.g. 8 bytes) to avoid single byte reads when calling read()

rewind()

void rewind ( )

inline

Sets the read position to the beginning.

setConsumeOnRead()

void setConsumeOnRead ( bool  consume )

inline

Enable or disable consuming reads (remove records as they are read)

setLoop()

virtual void setLoop ( bool  loop )

inlinevirtual

Automatically rewinds to the beginning when reaching the end.

setMaxRecords()

void setMaxRecords ( int  max_records )

inline

setWriteBufferSize()

void setWriteBufferSize ( int  size )

inlineinherited

size()

size_t size ( )

inline

write() [1/2]

virtual size_t write ( const uint8_t *  data, size_t  len  )

inlineoverridevirtual

Implements BaseStream.

write() [2/2]

virtual size_t write ( uint8_t  ch )

inlineoverridevirtualinherited

Reimplemented in MemoryStream, AudioStreamWrapper, BufferedTaskStream, RingBufferStream, BufferedStream, and URLStream.

Member Data Documentation

_timeout

int _timeout = 10

protectedinherited

alloc_failed

bool alloc_failed = false

protected

audio_list

List<DataNode*> audio_list

protected

consume_on_read

bool consume_on_read = false

protected

default_buffer_size

int default_buffer_size =DEFAULT_BUFFER_SIZE

protected

is_loop

bool is_loop = false

protected

it

List<DataNode*>::Iterator it = audio_list.end()

protected

max_records

int max_records = 0

protected

read_pos

size_t read_pos = 0

protected

temp_audio

RingBuffer<uint8_t> temp_audio {0}

protected

tmp_in

RingBuffer<uint8_t> tmp_in {0}

protectedinherited

tmp_out

RingBuffer<uint8_t> tmp_out {0}

protectedinherited

total_available

size_t total_available = 0

protected

write_buffer_size

int write_buffer_size = MAX_SINGLE_CHARS

protectedinherited

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

• src/AudioTools/CoreAudio/BaseStream.h