Obsolete: WavIMADecoder - based on WAVDecoder - We parse the header data as we receive it and send the sound data to the stream which was indicated in the constructor. Only WAV files with WAVE_FORMAT_IMA_ADPCM are supported by this codec! More...

#include <CodecWavIMA.h>

Inheritance diagram for WavIMADecoder:

Public Member Functions
	WavIMADecoder ()
	Construct a new WavIMADecoder object.

	WavIMADecoder (Print &out_stream, AudioInfoSupport &bi)
	Construct a new WavIMADecoder object.

	WavIMADecoder (Print &out_stream, bool active=true)
	Construct a new WavIMADecoder object.

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

AudioInfo	audioInfo () override
	provides the actual input AudioInfo

WavIMAAudioInfo &	audioInfoEx ()

virtual AudioInfo	audioInfoOut ()

bool	begin ()

virtual bool	begin (AudioInfo info) override

virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.

void	end ()

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.

const char *	mime ()

virtual	operator bool ()

int	readStream (Stream &in)
	Alternative API which provides the data from an input stream.

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)
	Defines the output Stream.

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

Public Attributes
int	id
	custom id to be used by application

Protected Member Functions
void	decodeBlock (int channels)

int16_t	decodeSample (uint8_t sample, int channel=0)

void	notifyAudioChange (AudioInfo info)

void	processInput (const uint8_t *data, size_t size)

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

Protected Attributes
bool	active

size_t	bytes_per_decoded_block = 0

size_t	bytes_per_encoded_block = 0

WavIMAHeader	header

IMAState	ima_states [2]

AudioInfo	info

uint8_t *	input_buffer = nullptr

int32_t	input_pos = 0

bool	is_notify_active = true

bool	isFirst = true

bool	isValid = true

Vector< AudioInfoSupport * >	notify_vector

Print *	out

int16_t *	output_buffer = nullptr

Print *	p_print = nullptr

size_t	remaining_bytes = 0

size_t	samples_per_decoded_block = 0

Detailed Description

Obsolete: WavIMADecoder - based on WAVDecoder - We parse the header data as we receive it and send the sound data to the stream which was indicated in the constructor. Only WAV files with WAVE_FORMAT_IMA_ADPCM are supported by this codec!

We recommend using the WAVDecoder with a corresponding ADPCMDecoder instead.

Author: Phil Schatzmann; Norman Ritz

Copyright: GPLv3

Constructor & Destructor Documentation

◆ WavIMADecoder() [1/2]

WavIMADecoder	(	Print &	out_stream,
		bool	active = `true`
	)

inline

Construct a new WavIMADecoder object.

Parameters

out_stream Output Stream to which we write the decoded result

◆ WavIMADecoder() [2/2]

WavIMADecoder	(	Print &	out_stream,
		AudioInfoSupport &	bi
	)

inline

Construct a new WavIMADecoder object.

Parameters

out_stream	Output Stream to which we write the decoded result
bi	Object that will be notified about the Audio Formt (Changes)

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 ( )

inlineoverridevirtual

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

◆ begin() [1/2]

bool begin ( )

inlinevirtual

Reimplemented from AudioDecoder.

◆ 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 ( )

inlinevirtual

Reimplemented from AudioDecoder.

◆ 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 ( )

inlinevirtual

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 )

inlinevirtual

Defines the output Stream.

Reimplemented from AudioDecoder.

◆ write()

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

inlinevirtual

Implements AudioWriter.

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

src/AudioTools/AudioCodecs/CodecWavIMA.h

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ WavIMADecoder() [1/2]

◆ WavIMADecoder() [2/2]

Member Function Documentation

◆ addNotifyAudioChange()

◆ audioInfo()

◆ audioInfoOut()

◆ begin() [1/2]

◆ begin() [2/2]

◆ clearNotifyAudioChange()

◆ end()

◆ isResultPCM()

◆ operator bool()

◆ removeNotifyAudioChange()

◆ setAudioInfo()

◆ setCodecConfig()

◆ setOutput() [1/3]

◆ setOutput() [2/3]

◆ setOutput() [3/3]

◆ write()