Dummy no implmentation Codec. This is used so that we can initialize some pointers to decoders and encoders to make sure that they do not point to null. More...

#include <AudioCodecsBase.h>

Inheritance diagram for CodecNOP:

Public Member Functions
virtual void	addNotifyAudioChange (AudioInfoSupport &bi)
	Adds target to be notified about audio changes.

virtual AudioInfo	audioInfo ()
	provides the actual input AudioInfo

virtual AudioInfo	audioInfoOut ()

virtual bool	begin ()

virtual bool	begin (AudioInfo info) override

virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.

virtual void	end ()

virtual uint32_t	frameDurationUs ()
	Optional rtsp function: provide the frame duration in microseconds.

virtual int	frameSize ()

Print *	getOutput ()

bool	isNotifyActive ()
	Checks if the automatic AudioInfo update is active.

virtual bool	isResultPCM ()
	Returns true to indicate that the decoding result is PCM data.

virtual const char *	mime ()
	Provides the mime type of the data that is expected by this decoder.

virtual	operator bool ()

virtual int	readStream (Stream &in)

virtual bool	removeNotifyAudioChange (AudioInfoSupport &bi)
	Removes a target in order not to be notified about audio changes.

virtual uint16_t	samplesPerFrame ()
	Optional rtsp function: provide samples per the frame.

virtual void	setAudioInfo (AudioInfo info)
	for most decoders this is not needed

virtual bool	setCodecConfig (const uint8_t *data, size_t len)
	Some decoders need e.g. a magic cookie to provide the relevant info for decoding.

void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)

virtual void	setOutput (AudioOutput &out_stream)
	Defines where the decoded result is written to.

virtual void	setOutput (AudioStream &out_stream)
	Defines where the decoded result is written to.

virtual void	setOutput (Print &out_stream)
	Defines where the decoded result is written to.

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

Static Public Member Functions
static CodecNOP *	instance ()

Public Attributes
int	id
	custom id to be used by application

Protected Member Functions
void	notifyAudioChange (AudioInfo info)

void	writeBlocking (Print out, uint8_t data, size_t len)

void	writeBlocking (Print out, uint8_t data, size_t len)

Protected Attributes
AudioInfo	info

AudioInfo	info

bool	is_notify_active = true

Vector< AudioInfoSupport * >	notify_vector

Print *	p_print = nullptr

Detailed Description

Dummy no implmentation Codec. This is used so that we can initialize some pointers to decoders and encoders to make sure that they do not point to null.

Author: Phil Schatzmann

Copyright: GPLv3

Member Function Documentation

◆ addNotifyAudioChange()

virtual void addNotifyAudioChange ( AudioInfoSupport & bi )

inlinevirtual

Adds target to be notified about audio changes.

Reimplemented from AudioInfoSource.

◆ audioInfo()

virtual AudioInfo audioInfo ( )

inlinevirtual

provides the actual input AudioInfo

Reimplemented from AudioDecoder.

◆ 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, ResampleStreamT< TInterpolator >, and SupportedRatesStream.

◆ begin() [1/2]

virtual bool begin ( )

inlinevirtual

Reimplemented from AudioDecoder.

◆ begin() [2/2]

virtual bool begin ( AudioInfo info )

inlineoverridevirtualinherited

Reimplemented from AudioWriter.

Reimplemented in DecoderBasic, and OggContainerDecoder.

◆ clearNotifyAudioChange()

virtual void clearNotifyAudioChange ( )

inlinevirtualinherited

Deletes all change notify subscriptions.

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

◆ end()

virtual void end ( )

inlinevirtual

Reimplemented from AudioDecoder.

◆ frameDurationUs()

virtual uint32_t frameDurationUs ( )

inlinevirtualinherited

Optional rtsp function: provide the frame duration in microseconds.

Reimplemented in ADPCMEncoder, MP3EncoderShine, OpusOggEncoder, MP3ParserEncoder, and MetaDataFilterEncoder.

◆ frameSize()

virtual int frameSize ( )

inlinevirtualinherited

Optional rtsp function: provide the encoded size (in bytes) of one frame, once known (e.g. after the encoder has seen real data). Lets an RTSPFormat size its RTP fragments to match one frame instead of a fixed guess, so throughput actually tracks frameDurationUs() - a fragment size covering several frames' worth of bytes sent at one-frame timing overruns real-time bandwidth and, over UDP (no flow control), causes packet loss. Returns 0 if not yet known/not applicable (fixed-frame-size codecs have no need to override this).

Reimplemented in ADPCMEncoder, EncoderALAC, AMRNBEncoder, AMRWBEncoder, and MP3ParserEncoder.

◆ getOutput()

Print * getOutput ( )

inlineinherited

◆ instance()

static CodecNOP * instance ( )

inlinestatic

◆ isNotifyActive()

bool isNotifyActive ( )

inlineinherited

Checks if the automatic AudioInfo update is active.

◆ isResultPCM()

virtual bool isResultPCM ( )

inlinevirtualinherited

Returns true to indicate that the decoding result is PCM data.

Reimplemented in CopyDecoder, DecoderNetworkFormat, and ContainerM4A.

◆ mime()

virtual const char * mime ( )

inlinevirtual

Provides the mime type of the data that is expected by this decoder.

Implements AudioDecoder.

◆ notifyAudioChange()

void notifyAudioChange ( AudioInfo info )

inlineprotectedinherited

◆ operator bool()

virtual operator bool ( )

inlinevirtual

Implements AudioWriter.

◆ readStream()

virtual int readStream ( Stream & in )

inlinevirtual

◆ removeNotifyAudioChange()

virtual bool removeNotifyAudioChange ( AudioInfoSupport & bi )

inlinevirtualinherited

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

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

◆ samplesPerFrame()

virtual uint16_t samplesPerFrame ( )

inlinevirtualinherited

Optional rtsp function: provide samples per the frame.

Reimplemented in OpusAudioEncoder, OpusMultiStreamAudioEncoder, MP3EncoderShine, MP3ParserEncoder, and MetaDataFilterEncoder.

◆ setAudioInfo()

virtual void setAudioInfo ( AudioInfo from )

inlinevirtual

for most decoders this is not needed

Reimplemented from AudioDecoder.

◆ setCodecConfig()

virtual bool setCodecConfig	(	const uint8_t *	data,
		size_t	len
	)

inlinevirtualinherited

Some decoders need e.g. a magic cookie to provide the relevant info for decoding.

Reimplemented in DecoderALAC, and MultiDecoder.

◆ setNotifyActive()

void setNotifyActive ( bool flag )

inlineinherited

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

◆ setOutput() [1/3]

virtual void setOutput ( AudioOutput & out_stream )

inlinevirtualinherited

Defines where the decoded result is written to.

Reimplemented in ADTSDecoder, CodecChain, MTSDecoder, MTSDecoderTSDemux, and MetaDataFilterDecoder.

◆ setOutput() [2/3]

virtual void setOutput ( AudioStream & out_stream )

inlinevirtualinherited

Defines where the decoded result is written to.

Reimplemented in ADTSDecoder, CodecChain, MTSDecoder, MTSDecoderTSDemux, and MetaDataFilterDecoder.

◆ setOutput() [3/3]

virtual void setOutput ( Print & out_stream )

inlinevirtual

Defines where the decoded result is written to.

Reimplemented from AudioDecoder.

◆ write()

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

inlinevirtual

Implements AudioWriter.

◆ writeBlocking() [1/2]

void writeBlocking	(	Print *	out,
		uint8_t *	data,
		size_t	len
	)

inlineprotectedinherited

◆ writeBlocking() [2/2]

void writeBlocking	(	Print *	out,
		uint8_t *	data,
		size_t	len
	)

inlineprotectedinherited

Member Data Documentation

◆ id

int id

inherited

custom id to be used by application

◆ info [1/2]

AudioInfo info

protectedinherited

◆ info [2/2]

AudioInfo info

protectedinherited

◆ is_notify_active

bool is_notify_active = true

protectedinherited

◆ notify_vector

Vector<AudioInfoSupport*> notify_vector

protectedinherited

◆ p_print

Print* p_print = nullptr

protectedinherited

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

src/AudioTools/AudioCodecs/AudioCodecsBase.h

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

◆ addNotifyAudioChange()

◆ audioInfo()

◆ audioInfoOut()

◆ begin() [1/2]

◆ begin() [2/2]

◆ clearNotifyAudioChange()

◆ end()

◆ frameDurationUs()

◆ frameSize()

◆ getOutput()

◆ instance()

◆ isNotifyActive()

◆ isResultPCM()

◆ mime()

◆ notifyAudioChange()

◆ operator bool()

◆ readStream()

◆ removeNotifyAudioChange()

◆ samplesPerFrame()

◆ setAudioInfo()

◆ setCodecConfig()

◆ setNotifyActive()

◆ setOutput() [1/3]

◆ setOutput() [2/3]

◆ setOutput() [3/3]

◆ write()

◆ writeBlocking() [1/2]

◆ writeBlocking() [2/2]

Member Data Documentation

◆ id

◆ info [1/2]

◆ info [2/2]

◆ is_notify_active

◆ notify_vector

◆ p_print