ADPCMEncoderXQ Class Reference

Encoder for ADPCM-XQ - Depends on https://github.com/pschatzmann/arduino-adpcm-xq. More...

#include <CodecADPCMXQ.h>

Inheritance diagram for ADPCMEncoderXQ:

Public Member Functions
AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
bool	begin () override
virtual bool	begin (AudioInfo info)
void	end () override
virtual uint32_t	frameDurationUs ()
	Optional rtsp function: provide the frame duration in microseconds.
const char *	mime () override
	Provides the mime type of the encoded result.
	operator bool () override
virtual uint16_t	samplesPerFrame ()
	Optional rtsp function: provide samples per the frame.
void	setAudioInfo (AudioInfo from) override
	Defines the sample rate, number of channels and bits per sample.
void	setBlockSizePower (int pow)
	set bocksizes as 2^pow: range from 8 to 15
void	setLookahead (int value)
	Set look ahead bytes from 0 to 8.
void	setNoiseShaping (ADPCMNoiseShaping ns)
	Defines the noise shaping.
void	setOutput (Print &out_stream) override
	Default output assignment (encoders may override to store Print reference)
size_t	write (const uint8_t *data, size_t len) override

Protected Member Functions
bool	encode ()
void	writeBlocking (Print *out, uint8_t *data, size_t len)

Protected Attributes
Vector< uint8_t >	adpcm_block
void *	adpcm_cnxt = nullptr
int	block_size = 0
int	block_size_pow2 = 0
int	current_sample = 0
AudioInfo	info
bool	is_first = true
int	lookahead = 0
int	noise_shaping = (int) NOISE_SHAPING_OFF
Print *	p_print = nullptr
Vector< int16_t >	pcm_block
int	pcm_block_size
int	samples_per_block = 0

Detailed Description

Encoder for ADPCM-XQ - Depends on https://github.com/pschatzmann/arduino-adpcm-xq.

Author

Phil Schatzmann

Copyright

GPLv3

Member Function Documentation

audioInfo()

AudioInfo audioInfo ( )

inlineoverridevirtualinherited

provides the actual input AudioInfo

Implements AudioInfoSupport.

Reimplemented in CodecNOP, BinaryContainerEncoder, and MP3ParserEncoder.

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 )

inlinevirtualinherited

Reimplemented in AACEncoderFDK.

end()

void end ( )

inlineoverridevirtual

Implements AudioWriter.

frameDurationUs()

virtual uint32_t frameDurationUs ( )

inlinevirtualinherited

Optional rtsp function: provide the frame duration in microseconds.

Reimplemented in ADPCMEncoder, OpusOggEncoder, MP3ParserEncoder, and MetaDataFilterEncoder.

mime()

const char * mime ( )

inlineoverridevirtual

Provides the mime type of the encoded result.

Implements AudioEncoder.

operator bool()

operator bool ( )

inlineoverridevirtual

Implements AudioWriter.

samplesPerFrame()

virtual uint16_t samplesPerFrame ( )

inlinevirtualinherited

Optional rtsp function: provide samples per the frame.

Reimplemented in MP3ParserEncoder, and MetaDataFilterEncoder.

setAudioInfo()

void setAudioInfo ( AudioInfo  from )

inlineoverridevirtualinherited

Defines the sample rate, number of channels and bits per sample.

Implements AudioWriter.

Reimplemented in MP3EncoderLAME, EncoderBasic, CodecChain, FLACEncoder, OpusAudioEncoder, WAVEncoder, CodecNOP, G7xxEncoder, BinaryContainerEncoder, OggContainerEncoder, OSCContainerEncoder, and MetaDataFilterEncoder.

setOutput()

void setOutput ( Print &  out_stream )

inlineoverridevirtual

Default output assignment (encoders may override to store Print reference)

Reimplemented from AudioEncoder.

write()

size_t write ( const uint8_t *  data, size_t  len  )

inlineoverridevirtual

Implements AudioWriter.

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

• src/AudioTools/AudioCodecs/CodecADPCMXQ.h