AACDecoderFDK Class Reference

Audio Decoder which decodes AAC into a PCM stream This is basically just a wrapper using https://github.com/pschatzmann/arduino-fdk-aac which uses AudioInfo and provides the handlig of AudioInfo changes. More...

#include <CodecAACFDK.h>

Inheritance diagram for AACDecoderFDK:

Public Member Functions
	AACDecoderFDK (int output_buffer_size=FDK_OUT_BUFFER_DEFAULT_SIZE)
	AACDecoderFDK (Print &out_stream, int output_buffer_size=2048)
void	addNotifyAudioChange (AudioInfoSupport &bi) override
	Adds target to be notified about audio changes.
AudioInfo	audioInfo () override
	provides the actual input AudioInfo
CStreamInfo	audioInfoEx ()
virtual AudioInfo	audioInfoOut ()
bool	begin () override
virtual bool	begin (AudioInfo info) override
bool	begin (TRANSPORT_TYPE transportType, UINT nrOfLayers)
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
AAC_DECODER_ERROR	configure (uint8_t *conf, const uint32_t &length)
	Explicitly configure the decoder by passing a raw AudioSpecificConfig (ASC) or a StreamMuxConfig (SMC), contained in a binary buffer. This is required for MPEG-4 and Raw Packets file format bitstreams as well as for LATM bitstreams with no in-band SMC. If the transport format is LATM with or without LOAS, configuration is assumed to be an SMC, for all other file formats an ASC.
aac_fdk::AACDecoderFDK *	driver ()
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.
virtual	operator bool () override
virtual bool	removeNotifyAudioChange (AudioInfoSupport &bi)
	Removes a target in order not to be notified about audio changes.
void	setAudioInfo (AudioInfo from) 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 the output stream.
virtual size_t	write (const uint8_t *data, size_t len) override

Static Public Member Functions
static void	audioChangeCallback (CStreamInfo &info)

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)

Protected Attributes
aac_fdk::AACDecoderFDK *	dec =nullptr
AudioInfo	info
bool	is_notify_active = true
Vector< AudioInfoSupport * >	notify_vector
Print *	p_print = nullptr

Detailed Description

Audio Decoder which decodes AAC into a PCM stream This is basically just a wrapper using https://github.com/pschatzmann/arduino-fdk-aac which uses AudioInfo and provides the handlig of AudioInfo changes.

Author

Phil Schatzmann

Copyright

GPLv3

Member Function Documentation

addNotifyAudioChange()

void addNotifyAudioChange ( AudioInfoSupport &  bi )

inlineoverridevirtual

Adds target to be notified about audio changes.

Reimplemented from AudioInfoSource.

audioInfo()

AudioInfo audioInfo ( )

inlineoverridevirtual

provides the actual input AudioInfo

Implements AudioInfoSupport.

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

Implements AudioWriter.

begin() [2/2]

virtual bool begin ( AudioInfo  info )

inlineoverridevirtualinherited

Reimplemented from AudioWriter.

clearNotifyAudioChange()

virtual void clearNotifyAudioChange ( )

inlinevirtualinherited

Deletes all change notify subscriptions.

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

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, DecoderNetworkFormat, and ContainerM4A.

operator bool()

virtual operator bool ( )

inlineoverridevirtual

Implements AudioWriter.

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 )

inlineoverridevirtualinherited

for most decoders this is not needed

Implements AudioWriter.

Reimplemented in DecoderALAC, CodecChain, DSFDecoder, DecoderL8, OpusAudioDecoder, CodecNOP, and G7xxDecoder.

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.

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 the output stream.

Reimplemented from AudioDecoder.

write()

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

inlineoverridevirtual

Implements AudioWriter.

---

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

• src/AudioTools/AudioCodecs/CodecAACFDK.h