G7xxEncoder Class Reference

g723_24, g721, g723_40 Encoder based on https://github.com/pschatzmann/codec-g7xx More...

#include <CodecG7xx.h>

Inheritance diagram for G7xxEncoder:

Public Member Functions
	G7xxEncoder (G7xxCODEC_e codec)
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.
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 void	setAudioInfo (AudioInfo info)
	Defines the sample rate, number of channels and bits per sample.
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)

Protected Attributes
unsigned char	code
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

g723_24, g721, g723_40 Encoder based on https://github.com/pschatzmann/codec-g7xx

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

G7xxEncoder()

G7xxEncoder ( G7xxCODEC_e  codec )

inline

Member Function Documentation

audioInfo()

AudioInfo audioInfo ( )

inlineoverridevirtualinherited

provides the actual input AudioInfo

Implements AudioInfoSupport.

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

begin() [1/2]

bool begin ( )

inlineoverridevirtual

Implements AudioWriter.

begin() [2/2]

virtual bool begin ( AudioInfo  info )

inlinevirtualinherited

Reimplemented in OpusOggEncoder, OggContainerEncoder, DecoderBasic, AudioDecoder, AACEncoderFDK, AACEncoderVO, OggContainerDecoder, and MetaDataFilterEncoder.

end()

void end ( )

inlineoverridevirtual

Implements AudioWriter.

frameDurationUs()

virtual uint32_t frameDurationUs ( )

inlinevirtualinherited

Optional rtsp function: provide the frame duration in microseconds.

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

frameSize()

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, EncoderALAC, AMRNBEncoder, AMRWBEncoder, and MP3ParserEncoder.

mime()

const char * mime ( )

inlineoverridevirtual

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 OpusAudioEncoder, OpusMultiStreamAudioEncoder, MP3EncoderShine, MP3ParserEncoder, and MetaDataFilterEncoder.

setAudioInfo()

virtual void setAudioInfo ( AudioInfo  from )

inlinevirtual

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

Reimplemented from AudioEncoder.

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.

writeBlocking()

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

inlineprotectedinherited

Member Data Documentation

code

unsigned char code

protected

enc_bits

int enc_bits

protected

enc_routine

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

protected

info

AudioInfo info

protectedinherited

is_active

bool is_active = false

protected

out_bits

int out_bits = 0

protected

out_buffer

unsigned int out_buffer = 0

protected

p_mime

const char* p_mime = nullptr

protected

p_print

Print* p_print = nullptr

protected

resid

int resid

protected

sample_char

unsigned char sample_char

protected

sample_int16

int16_t sample_int16

protected

state

struct g72x_state state

protected

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

• src/AudioTools/AudioCodecs/CodecG7xx.h