MeasuringStream Class Reference

Class which measures the thruput. More...

#include <AudioStreams.h>

Inheritance diagram for MeasuringStream:

Public Member Functions
	MeasuringStream (int count=10, Print *logOut=nullptr)
	MeasuringStream (Print &print, int count=10, Print *logOut=nullptr)
	MeasuringStream (Stream &stream, int count=10, Print *logOut=nullptr)
virtual void	addNotifyAudioChange (AudioInfoSupport &bi)
	Adds target to be notified about audio changes.
virtual AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
int	available () override
virtual int	availableForWrite () override
	Provides the nubmer of bytes we can write.
bool	begin () override
bool	begin (AudioInfo info)
int	bytesPerSecond ()
	Returns the actual thrughput in bytes per second.
uint32_t	bytesSinceBegin ()
	Provides the total processed bytes since the last call of begin()
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
virtual void	end ()
uint32_t	estimatedOpenTimeFor (uint32_t totalBytes)
	Provides the estimated time from now to the end in ms.
uint32_t	estimatedTotalTimeFor (uint32_t totalBytes)
	Provides the estimated runtime in milliseconds for the indicated total.
virtual void	flush () override
int	framesPerSecond ()
	Returns the actual thrughput in frames (samples) per second.
bool	isNotifyActive ()
	Checks if the automatic AudioInfo update is active.
virtual	operator bool ()
size_t	readBytes (uint8_t *data, size_t len) override
	Provides the data from all streams mixed together.
virtual size_t	readSilence (uint8_t *buffer, size_t length)
	Source to generate silence: just sets the buffer to 0.
virtual bool	removeNotifyAudioChange (AudioInfoSupport &bi)
	Removes a target in order not to be notified about audio changes.
void	setAudioInfo (AudioInfo info) override
	Defines the input AudioInfo.
void	setFrameSize (int size)
	Trigger reporting in frames (=samples) per second.
void	setLogOutput (Print &out)
	Defines the logging output.
void	setName (const char *name)
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)
virtual void	setOutput (AudioOutput &out)
	Defines/Changes the output target and registers for audio change notifications.
void	setOutput (Print &out) override
	Defines/Changes the output target.
bool	setProcessedBytes (uint32_t pos)
void	setReportBytes (bool flag)
	Report in bytes instead of samples.
virtual void	setStream (AudioStream &io)
	Defines/Changes the input & output and registers for audio change notifications.
void	setStream (Stream &io) override
	Defines/Changes the input & output.
void	setWriteBufferSize (int size)
uint32_t	startTime ()
	Provides the time when the last measurement was started.
uint32_t	timeSinceBegin ()
	Provides the time in ms since the last call of begin()
virtual size_t	write (const uint8_t *data, size_t len) override
	Writes raw PCM audio data, which will be the input for the volume control.
virtual size_t	write (uint8_t ch) override
virtual void	writeSilence (size_t len)
	Writes len bytes of silence (=0).

Protected Member Functions
size_t	measure (size_t len)
virtual int	not_supported (int out, const char *msg="")
void	notifyAudioChange (AudioInfo info)
void	printResult ()
void	refillReadBuffer ()
	Refill small read buffer (e.g. 8 bytes) to avoid single byte reads when calling read()

Protected Attributes
int	_timeout = 10
int	bytes_per_second = 0
int	count = 0
int	frame_size = 0
AudioInfo	info
bool	is_notify_active = true
int	max_count = 0
uint32_t	ms_at_begin = 0
const char *	name = ""
Vector< AudioInfoSupport * >	notify_vector
NullStream	null
Print *	p_logout = nullptr
Print *	p_print = nullptr
Stream *	p_stream = nullptr
bool	report_bytes = false
uint32_t	start_time
RingBuffer< uint8_t >	tmp_in {0}
RingBuffer< uint8_t >	tmp_out {0}
int	total_bytes = 0
uint32_t	total_bytes_since_begin = 0
int	write_buffer_size = MAX_SINGLE_CHARS

Detailed Description

Class which measures the thruput.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

MeasuringStream() [1/3]

MeasuringStream ( int  count = 10, Print *  logOut = nullptr  )

inline

MeasuringStream() [2/3]

MeasuringStream ( Print &  print, int  count = 10, Print *  logOut = nullptr  )

inline

MeasuringStream() [3/3]

MeasuringStream ( Stream &  stream, int  count = 10, Print *  logOut = nullptr  )

inline

Member Function Documentation

addNotifyAudioChange()

virtual void addNotifyAudioChange ( AudioInfoSupport &  bi )

inlinevirtualinherited

Adds target to be notified about audio changes.

Reimplemented in CodecNOP, EncodedAudioOutput, EncodedAudioStream, AACDecoderFDK, DecoderBasic, CodecChain, MP3DecoderHelix, MP3DecoderMAD, OggContainerDecoder, RTSPClient< TcpClient, UdpSocket >, Pipeline, and Pipeline::ModifyingStreamAdapter.

audioInfo()

virtual AudioInfo audioInfo ( )

inlineoverridevirtualinherited

provides the actual input AudioInfo

Implements AudioInfoSupport.

Reimplemented in JupyterAudioT< T >, MozziStream, TimerCallbackAudioStream, EncodedAudioStream, PureDataStream, AdapterAudioOutputToAudioStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, and InputMerge< T >.

audioInfoOut()

virtual AudioInfo audioInfoOut ( )

inlinevirtualinherited

provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream

Reimplemented in MP3EncoderShine, PureDataStream, PWMAudioOutput< PWMDriverT >, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, Pipeline, ResampleStream, and ResampleStreamT< TInterpolator >.

available()

int available ( )

inlineoverridevirtual

Reimplemented from BaseStream.

availableForWrite()

virtual int availableForWrite ( )

inlineoverridevirtual

Provides the nubmer of bytes we can write.

Reimplemented from BaseStream.

begin() [1/2]

bool begin ( )

inlineoverridevirtual

Reimplemented from BaseStream.

begin() [2/2]

bool begin ( AudioInfo  info )

inline

bytesPerSecond()

int bytesPerSecond ( )

inline

Returns the actual thrughput in bytes per second.

bytesSinceBegin()

uint32_t bytesSinceBegin ( )

inline

Provides the total processed bytes since the last call of begin()

clearNotifyAudioChange()

virtual void clearNotifyAudioChange ( )

inlinevirtualinherited

Deletes all change notify subscriptions.

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

end()

virtual void end ( )

inlinevirtualinherited

Reimplemented in FaustStream< DSP >, AudioMP34DT05, I2SCodecStream, MozziStream, PureDataStream, SPDIFOutput, VS1053Stream, WM8960Stream, AdaptiveResamplingStream, AudioLoRa, ESPNowStream, BufferedTaskStream, URLStreamBufferedT< T >, URLStreamBufferedT< ICYStream >, USBAudioDeviceBase, Equalizer3Bands, I2SStream, AudioStreamWrapper, TimerCallbackAudioStream, FormatConverterStream, GoertzelStream, FileLoopT< FileType >, FileLoopT< File >, EqualizerNBands< SampleT, AccT, NUM_TAPS, NUM_BANDS >, EncodedAudioStream, AudioKitStream, MiniAudioStream, PortAudioStream, StdioStream, A2DPStream, HLSStreamT< URLStream >, HttpRequest, ICYStreamT< T >, URLStream, URLStreamESP32, NRF24Stream, SPIAudioSlave, AnalogAudioStream, AudioEffectStreamT< T >, AudioEffectStream, Equalizer3BandsPerChannel, ReformatBaseStream, AdapterAudioOutputToAudioStream, MemoryStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, InputMixer< T, SumT >, InputMerge< T >, CallbackStream, FilteredStream< T, TF >, FilteredStream< int16_t, int16_t >, ChannelFormatConverterStream, NumberFormatConverterStream, CatStream, QueueStream< T >, QueueStream< uint8_t >, DynamicMemoryStream, Pipeline, Pipeline::ModifyingStreamAdapter, VolumeStream, AudioFFTBase, AudioBLEClient, AudioBLEClient, AudioBLEServer, AudioBLEServer, AbstractURLStream, and AudioBLEStream.

estimatedOpenTimeFor()

uint32_t estimatedOpenTimeFor ( uint32_t  totalBytes )

inline

Provides the estimated time from now to the end in ms.

estimatedTotalTimeFor()

uint32_t estimatedTotalTimeFor ( uint32_t  totalBytes )

inline

Provides the estimated runtime in milliseconds for the indicated total.

flush()

virtual void flush ( )

inlineoverridevirtualinherited

Reimplemented from Print.

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

framesPerSecond()

int framesPerSecond ( )

inline

Returns the actual thrughput in frames (samples) per second.

isNotifyActive()

bool isNotifyActive ( )

inlineinherited

Checks if the automatic AudioInfo update is active.

measure()

size_t measure ( size_t  len )

inlineprotected

not_supported()

virtual int not_supported ( int  out, const char *  msg = ""  )

inlineprotectedvirtualinherited

notifyAudioChange()

void notifyAudioChange ( AudioInfo  info )

inlineprotectedinherited

operator bool()

virtual operator bool ( )

inlinevirtualinherited

Reimplemented in A2DPStream, ICYStreamT< T >, AudioBLEStream, PortAudioStream, URLStream, USBAudioDeviceBase, I2SStream, AdapterAudioOutputToAudioStream, TimedStream, MemoryStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, Pipeline, and AudioFFTBase.

printResult()

void printResult ( )

inlineprotected

readBytes()

size_t readBytes ( uint8_t *  data, size_t  len  )

inlineoverridevirtual

Provides the data from all streams mixed together.

Reimplemented from AudioStream.

readSilence()

virtual size_t readSilence ( uint8_t *  buffer, size_t  length  )

inlinevirtualinherited

Source to generate silence: just sets the buffer to 0.

refillReadBuffer()

void refillReadBuffer ( )

inlineprotectedinherited

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

removeNotifyAudioChange()

virtual bool removeNotifyAudioChange ( AudioInfoSupport &  bi )

inlinevirtualinherited

Removes a target in order not to be notified about audio changes.

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

setAudioInfo()

void setAudioInfo ( AudioInfo  info )

inlineoverridevirtual

Defines the input AudioInfo.

Reimplemented from AudioStream.

setFrameSize()

void setFrameSize ( int  size )

inline

Trigger reporting in frames (=samples) per second.

setLogOutput()

void setLogOutput ( Print &  out )

inline

Defines the logging output.

setName()

void setName ( const char *  name )

inline

setNotifyActive()

void setNotifyActive ( bool  flag )

inlineinherited

Deactivate/Reactivate automatic AudioInfo updates: (default is active)

setOutput() [1/2]

virtual void setOutput ( AudioOutput &  out )

inlinevirtualinherited

Defines/Changes the output target and registers for audio change notifications.

Reimplemented in TimedStream, VolumeMeter, AudioInputMonitor, QualityAnalysisStream, ReformatBaseStream, FormatConverterStream, and EncodedAudioStream.

setOutput() [2/2]

void setOutput ( Print &  out )

inlineoverridevirtual

Defines/Changes the output target.

Implements ModifyingStream.

setProcessedBytes()

bool setProcessedBytes ( uint32_t  pos )

inline

Alternative update method: e.g report actual file positon: returns true if the file position was increased

setReportBytes()

void setReportBytes ( bool  flag )

inline

Report in bytes instead of samples.

setStream() [1/2]

virtual void setStream ( AudioStream &  io )

inlinevirtualinherited

Defines/Changes the input & output and registers for audio change notifications.

Reimplemented in VolumeMeter, AudioInputMonitor, QualityAnalysisStream, FormatConverterStream, ReformatBaseStream, TimedStream, and EncodedAudioStream.

setStream() [2/2]

void setStream ( Stream &  io )

inlineoverridevirtual

Defines/Changes the input & output.

Implements ModifyingStream.

setWriteBufferSize()

void setWriteBufferSize ( int  size )

inlineinherited

startTime()

uint32_t startTime ( )

inline

Provides the time when the last measurement was started.

timeSinceBegin()

uint32_t timeSinceBegin ( )

inline

Provides the time in ms since the last call of begin()

write() [1/2]

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

inlineoverridevirtual

Writes raw PCM audio data, which will be the input for the volume control.

Reimplemented from AudioStream.

write() [2/2]

virtual size_t write ( uint8_t  ch )

inlineoverridevirtualinherited

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

writeSilence()

virtual void writeSilence ( size_t  len )

inlinevirtualinherited

Writes len bytes of silence (=0).

Member Data Documentation

_timeout

int _timeout = 10

protectedinherited

bytes_per_second

int bytes_per_second = 0

protected

count

int count = 0

protected

frame_size

int frame_size = 0

protected

info

AudioInfo info

protectedinherited

is_notify_active

bool is_notify_active = true

protectedinherited

max_count

int max_count = 0

protected

ms_at_begin

uint32_t ms_at_begin = 0

protected

name

const char* name = ""

protected

notify_vector

Vector<AudioInfoSupport*> notify_vector

protectedinherited

null

NullStream null

protected

p_logout

Print* p_logout = nullptr

protected

p_print

Print* p_print = nullptr

protected

p_stream

Stream* p_stream = nullptr

protected

report_bytes

bool report_bytes = false

protected

start_time

uint32_t start_time

protected

tmp_in

RingBuffer<uint8_t> tmp_in {0}

protectedinherited

tmp_out

RingBuffer<uint8_t> tmp_out {0}

protectedinherited

total_bytes

int total_bytes = 0

protected

total_bytes_since_begin

uint32_t total_bytes_since_begin = 0

protected

write_buffer_size

int write_buffer_size = MAX_SINGLE_CHARS

protectedinherited

---

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

• src/AudioTools/CoreAudio/AudioStreams.h