ADTSDecoder Class Reference

Audio Data Transport Stream (ADTS) is a format similar to Audio Data Interchange Format (ADIF), used by MPEG TS or Shoutcast to stream audio defined in MPEG-2 Part 7, usually AAC. This parser extracts all valid ADTS frames from the data stream ignoring other data. More...

#include <CodecADTS.h>

Inheritance diagram for ADTSDecoder:

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 ()
	provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream
bool	begin () override
virtual bool	begin (AudioInfo info) override
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
void	end () override
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
	checks if the class is active
virtual bool	removeNotifyAudioChange (AudioInfoSupport &bi)
	Removes a target in order not to be notified about audio changes.
virtual void	setAudioInfo (AudioInfo from) override
	for most decoders this is not needed
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) override
	Defines where the decoded result is written to.
size_t	write (const uint8_t *data, size_t len) override
	Write AAC data to decoder.

Public Attributes
int	id
	custom id to be used by application

Protected Member Functions
void	notifyAudioChange (AudioInfo info)
void	parseBuffer ()
void	processSync (int pos)
void	processValidFrame ()
void	resizeBuffer ()
void	writeBlocking (Print *out, uint8_t *data, size_t len)
void	writeFrame ()

Protected Attributes
SingleBuffer< uint8_t >	buffer {DEFAULT_BUFFER_SIZE}
int	buffer_write_size = 0
AudioInfo	info
bool	is_notify_active = true
Vector< AudioInfoSupport * >	notify_vector
Print *	p_print = nullptr
ADTSParser	parser

Detailed Description

Audio Data Transport Stream (ADTS) is a format similar to Audio Data Interchange Format (ADIF), used by MPEG TS or Shoutcast to stream audio defined in MPEG-2 Part 7, usually AAC. This parser extracts all valid ADTS frames from the data stream ignoring other data.

Author

Phil Schatzmann

Copyright

GPLv3

Member Function Documentation

addNotifyAudioChange()

virtual void addNotifyAudioChange ( AudioInfoSupport &  bi )

inlinevirtualinherited

Adds target to be notified about audio changes.

Reimplemented in CodecNOP, MP3DecoderMAD, EncodedAudioOutput, EncodedAudioStream, AACDecoderFDK, DecoderBasic, MP3DecoderHelix, OggContainerDecoder, Pipeline, and Pipeline::ModifyingStreamAdapter.

audioInfo()

virtual AudioInfo audioInfo ( )

inlinevirtualinherited

provides the actual input AudioInfo

Implements AudioInfoSupport.

Reimplemented in CodecNOP, GGWaveDecoder, AACDecoderFDK, AACDecoderHelix, DecoderBasic, DecoderHelix, MP3DecoderHelix, MP3DecoderMAD, OpusAudioDecoder, WAVDecoder, WavIMADecoder, and OggContainerDecoder.

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, and ResampleStream.

begin() [1/2]

bool begin ( )

inlineoverridevirtual

Implements AudioWriter.

begin() [2/2]

virtual bool begin ( AudioInfo  info )

inlineoverridevirtualinherited

Reimplemented from AudioWriter.

end()

void end ( )

inlineoverridevirtual

Implements AudioWriter.

isResultPCM()

virtual bool isResultPCM ( )

inlinevirtualinherited

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

Reimplemented in CopyDecoder, and GGWaveDecoder.

operator bool()

operator bool ( )

inlineoverridevirtual

checks if the class is active

Implements AudioWriter.

setAudioInfo()

virtual void setAudioInfo ( AudioInfo  from )

inlineoverridevirtualinherited

for most decoders this is not needed

Implements AudioWriter.

Reimplemented in GGWaveDecoder, DecoderL8, OpusAudioDecoder, CodecNOP, AACDecoderHelix, and G7xxDecoder.

setOutput() [1/3]

virtual void setOutput ( AudioOutput &  out_stream )

inlinevirtualinherited

Defines where the decoded result is written to.

Reimplemented in MetaDataFilterDecoder.

setOutput() [2/3]

virtual void setOutput ( AudioStream &  out_stream )

inlinevirtualinherited

Defines where the decoded result is written to.

Reimplemented in MetaDataFilterDecoder.

setOutput() [3/3]

virtual void setOutput ( Print &  out_stream )

inlineoverridevirtualinherited

Defines where the decoded result is written to.

Implements AudioWriter.

Reimplemented in MP3DecoderMAD, DecoderBase64, DecoderAdapter, CodecNOP, AACDecoderFDK, AACDecoderHelix, ADPCMDecoderXQ, APTXDecoder, Codec2Decoder, CopyDecoder, G722Decoder, GSMDecoder, ILBCDecoder, LC3Decoder, SBCDecoder, WavIMADecoder, GGWaveDecoder, ADPCMDecoder, DecoderBasic, DecoderFloat, G7xxDecoder, DecoderL16, OpusAudioDecoder, WAVDecoder, AVIDecoder, MetaDataFilterDecoder, DecoderHelix, MP3DecoderMini, BinaryContainerDecoder, MP3DecoderHelix, and OggContainerDecoder.

write()

size_t write ( const uint8_t *  data, size_t  len  )

inlineoverridevirtual

Write AAC data to decoder.

Implements AudioWriter.

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

• src/AudioTools/AudioCodecs/CodecADTS.h