G711_ULAWEncoder Class Reference

64 kbit/s g711 ULOW Encoder based on https://github.com/pschatzmann/codec-g7xx More...

#include <CodecG7xx.h>

Inheritance diagram for G711_ULAWEncoder:

Public Member Functions
	G711_ULAWEncoder ()
AudioInfo	audioInfo () override
	provides the actual input AudioInfo
AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
virtual AudioInfo	audioInfoOut ()
virtual bool	begin (AudioInfo info)
bool	begin () override
void	end () override
virtual uint32_t	frameDurationUs ()
	Optional rtsp function: provide the frame duration in microseconds.
virtual uint32_t	frameDurationUs ()
	Optional rtsp function: provide the frame duration in microseconds.
virtual int	frameSize ()
virtual int	frameSize ()
const char *	mime () override
	Provides the mime type of the encoded result.
	operator bool ()
virtual uint16_t	samplesPerFrame ()
	Optional rtsp function: provide samples per the frame.
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	setAudioInfo (AudioInfo info)
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
void	writeBlocking (Print *out, uint8_t *data, size_t len)
void	writeBlocking (Print *out, uint8_t *data, size_t len)

Protected Attributes
unsigned char	code
uint8_t(*	enc )(int) =nullptr
int	enc_bits
int(*	enc_routine )(int sample, int in_coding, struct g72x_state *state_ptr)
AudioInfo	info
bool	is_active = false
int	out_bits = 0
unsigned int	out_buffer = 0
const char *	p_mime = nullptr
Print *	p_print = nullptr
int	resid
unsigned char	sample_char
int16_t	sample_int16
struct g72x_state	state

Detailed Description

64 kbit/s g711 ULOW Encoder based on https://github.com/pschatzmann/codec-g7xx

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

G711_ULAWEncoder()

G711_ULAWEncoder ( )

inline

Member Function Documentation

audioInfo() [1/2]

AudioInfo audioInfo ( )

inlineoverridevirtualinherited

provides the actual input AudioInfo

Implements AudioInfoSupport.

Reimplemented in CodecNOP, CodecNOP, BinaryContainerEncoder, CodecNOP, MP3EncoderShine, and MP3ParserEncoder.

audioInfo() [2/2]

AudioInfo audioInfo ( )

inlineoverridevirtualinherited

provides the actual input AudioInfo

Implements AudioInfoSupport.

Reimplemented in CodecNOP, CodecNOP, BinaryContainerEncoder, CodecNOP, MP3EncoderShine, and MP3ParserEncoder.

audioInfoOut() [1/2]

virtual AudioInfo audioInfoOut ( )

inlinevirtualinherited

provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream

Reimplemented in ChannelFormatConverterStream, ChannelFormatConverterStreamT< T >, FormatConverterStream, MP3EncoderShine, NumberFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, Pipeline, PureDataStream, PWMAudioOutput< PWMDriverT >, ResampleStream, ResampleStreamT< TInterpolator >, and SupportedRatesStream.

audioInfoOut() [2/2]

virtual AudioInfo audioInfoOut ( )

inlinevirtualinherited

provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream

Reimplemented in ChannelFormatConverterStream, ChannelFormatConverterStreamT< T >, FormatConverterStream, MP3EncoderShine, NumberFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, Pipeline, PureDataStream, PWMAudioOutput< PWMDriverT >, ResampleStream, ResampleStreamT< TInterpolator >, and SupportedRatesStream.

begin() [1/2]

virtual bool begin ( AudioInfo info )

inlinevirtualinherited

Reimplemented in AudioDecoder, and AudioDecoder.

begin() [2/2]

bool begin ( )

inlineoverridevirtualinherited

Implements AudioWriter.

end()

void end ( )

inlineoverridevirtualinherited

Implements AudioWriter.

frameDurationUs() [1/2]

virtual uint32_t frameDurationUs ( )

inlinevirtualinherited

Optional rtsp function: provide the frame duration in microseconds.

Reimplemented in ADPCMEncoder, MetaDataFilterEncoder, MP3EncoderShine, MP3ParserEncoder, and OpusOggEncoder.

frameDurationUs() [2/2]

virtual uint32_t frameDurationUs ( )

inlinevirtualinherited

Optional rtsp function: provide the frame duration in microseconds.

Reimplemented in ADPCMEncoder, MetaDataFilterEncoder, MP3EncoderShine, MP3ParserEncoder, and OpusOggEncoder.

frameSize() [1/2]

virtual int frameSize ( )

inlinevirtualinherited

Optional rtsp function: provide the encoded size (in bytes) of one frame, once known (e.g. after the encoder has seen real data). Lets an RTSPFormat size its RTP fragments to match one frame instead of a fixed guess, so throughput actually tracks frameDurationUs() - a fragment size covering several frames' worth of bytes sent at one-frame timing overruns real-time bandwidth and, over UDP (no flow control), causes packet loss. Returns 0 if not yet known/not applicable (fixed-frame-size codecs have no need to override this).

Reimplemented in ADPCMEncoder, AMRNBEncoder, AMRWBEncoder, EncoderALAC, and MP3ParserEncoder.

frameSize() [2/2]

virtual int frameSize ( )

inlinevirtualinherited

Optional rtsp function: provide the encoded size (in bytes) of one frame, once known (e.g. after the encoder has seen real data). Lets an RTSPFormat size its RTP fragments to match one frame instead of a fixed guess, so throughput actually tracks frameDurationUs() - a fragment size covering several frames' worth of bytes sent at one-frame timing overruns real-time bandwidth and, over UDP (no flow control), causes packet loss. Returns 0 if not yet known/not applicable (fixed-frame-size codecs have no need to override this).

Reimplemented in ADPCMEncoder, AMRNBEncoder, AMRWBEncoder, EncoderALAC, and MP3ParserEncoder.

mime()

const char * mime ( )

inlineoverridevirtualinherited

Provides the mime type of the encoded result.

Implements AudioEncoder.

operator bool()

operator bool ( )

inlinevirtualinherited

Implements AudioWriter.

samplesPerFrame() [1/2]

virtual uint16_t samplesPerFrame ( )

inlinevirtualinherited

Optional rtsp function: provide samples per the frame.

Reimplemented in MetaDataFilterEncoder, MP3EncoderShine, MP3ParserEncoder, OpusAudioEncoder, and OpusMultiStreamAudioEncoder.

samplesPerFrame() [2/2]

virtual uint16_t samplesPerFrame ( )

inlinevirtualinherited

Optional rtsp function: provide samples per the frame.

Reimplemented in MetaDataFilterEncoder, MP3EncoderShine, MP3ParserEncoder, OpusAudioEncoder, and OpusMultiStreamAudioEncoder.

setAudioInfo() [1/2]

void setAudioInfo ( AudioInfo from )

inlineoverridevirtualinherited

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

Implements AudioWriter.

Reimplemented in CodecNOP, and CodecNOP.

setAudioInfo() [2/2]

virtual void setAudioInfo ( AudioInfo info )

inlinevirtualinherited

setOutput()

void setOutput ( Print & out_stream )

inlineoverridevirtualinherited

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

Reimplemented from AudioEncoder.

write()

size_t write ( const uint8_t * data, size_t len )

inlineoverridevirtualinherited

Implements AudioWriter.

writeBlocking() [1/2]

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

inlineprotectedinherited

writeBlocking() [2/2]

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

inlineprotectedinherited

Member Data Documentation

code

unsigned char code

protectedinherited

enc

uint8_t(* enc) (int) =nullptr

protectedinherited

enc_bits

int enc_bits

protectedinherited

enc_routine

int(* enc_routine) (int sample, int in_coding, struct g72x_state *state_ptr)

protectedinherited

info

AudioInfo info

protectedinherited

is_active

bool is_active = false

protectedinherited

out_bits

int out_bits = 0

protectedinherited

out_buffer

unsigned int out_buffer = 0

protectedinherited

p_mime

const char* p_mime = nullptr

protectedinherited

p_print

Print* p_print = nullptr

protectedinherited

resid

int resid

protectedinherited

sample_char

unsigned char sample_char

protectedinherited

sample_int16

int16_t sample_int16

protectedinherited

state

struct g72x_state state

protectedinherited

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

• src/AudioTools/AudioCodecs/CodecG7xx.h