LC3Encoder Class Reference

Encoder for LC3 - Depends on https://github.com/pschatzmann/arduino-liblc3. More...

#include <CodecLC3.h>

Inheritance diagram for LC3Encoder:

Public Member Functions
	LC3Encoder (int dt_us=7500, uint16_t outputByteCount=40)
AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
bool	begin ()
virtual bool	begin (AudioInfo info)
virtual void	end ()
virtual uint32_t	frameDurationUs ()
	Optional rtsp function: provide the frame duration in microseconds.
virtual const char *	mime ()
	Provides the mime type of the encoded result.
	operator bool ()
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.
virtual void	setOutput (Print &out_stream)
	Default output assignment (encoders may override to store Print reference)
virtual size_t	write (const uint8_t *data, size_t len)

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

Protected Attributes
bool	active = false
unsigned	dt_us = 1000
AudioInfo	info
Vector< uint8_t >	input_buffer
int	input_pos = 0
lc3_encoder_t	lc3_encoder = nullptr
Vector< uint8_t >	lc3_encoder_memory
uint16_t	num_frames
Vector< uint8_t >	output_buffer
uint16_t	output_byte_count = 20
Print *	p_print = nullptr
lc3_pcm_format	pcm_format

Detailed Description

Encoder for LC3 - Depends on https://github.com/pschatzmann/arduino-liblc3.

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 ( )

inlinevirtual

Implements AudioWriter.

begin() [2/2]

virtual bool begin ( AudioInfo  info )

inlinevirtualinherited

Reimplemented in AACEncoderFDK.

end()

virtual void end ( )

inlinevirtual

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()

virtual const char * mime ( )

inlinevirtual

Provides the mime type of the encoded result.

Implements AudioEncoder.

operator bool()

operator bool ( )

inlinevirtual

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()

virtual void setOutput ( Print &  out_stream )

inlinevirtual

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

Reimplemented from AudioEncoder.

write()

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

inlinevirtual

Implements AudioWriter.

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

• src/AudioTools/AudioCodecs/CodecLC3.h