G.729 decoder using the bcg729 library. More...

#include <CodecG729.h>

Inheritance diagram for G729Decoder:

Public Member Functions
	G729Decoder ()

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

AudioInfo	audioInfo () override
	provides the actual input AudioInfo

virtual AudioInfo	audioInfoOut ()

bool	begin () override

virtual bool	begin (AudioInfo info) override

virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.

void	end () override

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.

	operator bool () override

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

void	setAudioInfo (AudioInfo info) override
	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.

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

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

Public Attributes
int	id
	custom id to be used by application

Protected Member Functions
void	decodeFrame (const uint8_t *data, size_t frame_len)

void	notifyAudioChange (AudioInfo info)

void	processByte (uint8_t byte)

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

Protected Attributes
bcg729DecoderChannelContextStruct *	decoder_ctx = nullptr

AudioInfo	info

Vector< uint8_t >	input_buffer

size_t	input_pos = 0

bool	is_active = false

bool	is_notify_active = true

Vector< AudioInfoSupport * >	notify_vector

Print *	p_print = nullptr

Vector< uint8_t >	result_buffer

Detailed Description

G.729 decoder using the bcg729 library.

Accepts a raw G.729 byte stream and writes 16-bit PCM samples to the configured output. Both 10-byte speech frames and 2-byte SID (comfort-noise) frames are supported:

When write() is called with exactly 10 or 2 bytes and the internal accumulator is empty, the frame is decoded immediately (framed mode).
Otherwise bytes are accumulated until a full 10-byte speech frame is available (stream mode). SID frames must be delivered in framed mode to preserve their 2-byte boundary.

Output is always fixed at 8 000 Hz / mono / 16-bit PCM. Passing any other AudioInfo via setAudioInfo() triggers a warning but the fixed format is still used.

Note: Requires https://github.com/pschatzmann/codec-bcg729

Author: Phil Schatzmann

Copyright: GPLv3

Constructor & Destructor Documentation

◆ G729Decoder()

G729Decoder ( )

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()

AudioInfo audioInfo ( )

inlineoverridevirtualinherited

provides the actual input AudioInfo

Implements AudioInfoSupport.

Reimplemented in CodecNOP, DecoderBasic, DSFDecoder, MP3DecoderHelix, MP3DecoderMAD, OpusAudioDecoder, VorbisDecoder, WAVDecoder, WavIMADecoder, OggContainerDecoder, and VorbisDecoder.

◆ 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 PureDataStream, PWMAudioOutput, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, Pipeline, ResampleStream, and ResampleStreamT< TInterpolator >.

◆ begin() [1/2]

bool begin ( )

inlineoverridevirtual

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 >.

◆ decodeFrame()

void decodeFrame	(	const uint8_t *	data,
		size_t	frame_len
	)

inlineprotected

◆ end()

void end ( )

inlineoverridevirtual

Reimplemented from AudioDecoder.

◆ getOutput()

Print * getOutput ( )

inlineinherited

◆ 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.

◆ notifyAudioChange()

void notifyAudioChange ( AudioInfo info )

inlineprotectedinherited

◆ operator bool()

operator bool ( )

inlineoverridevirtual

Implements AudioWriter.

◆ processByte()

void processByte ( uint8_t byte )

inlineprotected

◆ 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 from )

inlineoverridevirtual

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]

void setOutput ( Print & out_stream )

inlineoverridevirtual

Defines where the decoded result is written to.

Reimplemented from AudioDecoder.

◆ write()

size_t write	(	const uint8_t *	data,
		size_t	len
	)

inlineoverridevirtual

Implements AudioWriter.

◆ writeBlocking()

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

inlineprotectedinherited

Member Data Documentation

◆ decoder_ctx

bcg729DecoderChannelContextStruct* decoder_ctx = nullptr

protected

◆ id

int id

inherited

custom id to be used by application

◆ info

AudioInfo info

protectedinherited

◆ input_buffer

Vector<uint8_t> input_buffer

protected

◆ input_pos

size_t input_pos = 0

protected

◆ is_active

bool is_active = false

protected

◆ is_notify_active

bool is_notify_active = true

protectedinherited

◆ notify_vector

Vector<AudioInfoSupport*> notify_vector

protectedinherited

◆ p_print

Print* p_print = nullptr

protected

◆ result_buffer

Vector<uint8_t> result_buffer

protected

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

src/AudioTools/AudioCodecs/CodecG729.h

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ G729Decoder()

Member Function Documentation

◆ addNotifyAudioChange()

◆ audioInfo()

◆ audioInfoOut()

◆ begin() [1/2]

◆ begin() [2/2]

◆ clearNotifyAudioChange()

◆ decodeFrame()

◆ end()

◆ getOutput()

◆ isNotifyActive()

◆ isResultPCM()

◆ notifyAudioChange()

◆ operator bool()

◆ processByte()

◆ removeNotifyAudioChange()

◆ setAudioInfo()

◆ setCodecConfig()

◆ setNotifyActive()

◆ setOutput() [1/3]

◆ setOutput() [2/3]

◆ setOutput() [3/3]

◆ write()

◆ writeBlocking()

Member Data Documentation

◆ decoder_ctx

◆ id

◆ info

◆ input_buffer

◆ input_pos

◆ is_active

◆ is_notify_active

◆ notify_vector

◆ p_print

◆ result_buffer