BinaryContainerEncoder Class Reference

Wraps the encoded data into Config, Data, and Meta segments so that we can recover the audio configuration and orignial segments if this is relevant. We assume that a full segment is written with each call of write(); The segments are separated with a new line character. More...

#include <ContainerBinary.h>

Inheritance diagram for BinaryContainerEncoder:

Public Member Functions
	BinaryContainerEncoder ()=default
	BinaryContainerEncoder (AudioEncoder &encoder)
	BinaryContainerEncoder (AudioEncoder *encoder)
AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
bool	begin () override
virtual bool	begin (AudioInfo info)
void	end ()
virtual uint32_t	frameDurationUs ()
	Optional rtsp function: provide the frame duration in microseconds.
virtual int	frameSize ()
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 info) override
	Defines the sample rate, number of channels and bits per sample.
void	setEncoder (AudioEncoder *encoder)
void	setOutput (Print &outStream)
	Default output assignment (encoders may override to store Print reference)
void	setVideoInfo (VideoInfo info)
VideoInfo	videoInfo ()
size_t	write (const uint8_t *data, size_t len)
	Add data segment. On first write we also add a AudioInfo header.
size_t	writeMeta (const uint8_t *data, size_t len)
	Adds meta data segment.
size_t	writeVideo (const uint8_t *data, size_t len)

Protected Member Functions
size_t	output (const uint8_t *data, size_t len)
void	writeAudio (const uint8_t *data, size_t len)
void	writeBlocking (Print *out, uint8_t *data, size_t len)
void	writeHeader ()
void	writeVideoHeader ()

Protected Attributes
SimpleContainerConfig	cfg
SimpleContainerDataHeader	dh
AudioInfo	info
bool	is_beginning = true
bool	is_video_beginning = true
SimpleContainerMetaDataHeader	meta
AudioEncoder *	p_codec = nullptr
Print *	p_out = nullptr
uint64_t	packet_count = 0
int	repeat_header
SimpleContainerVideoConfig	video_cfg
SimpleContainerVideoDataHeader	video_dh

Detailed Description

Wraps the encoded data into Config, Data, and Meta segments so that we can recover the audio configuration and orignial segments if this is relevant. We assume that a full segment is written with each call of write(); The segments are separated with a new line character.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

BinaryContainerEncoder() [1/3]

BinaryContainerEncoder ( )

default

BinaryContainerEncoder() [2/3]

BinaryContainerEncoder ( AudioEncoder &  encoder )

inline

BinaryContainerEncoder() [3/3]

BinaryContainerEncoder ( AudioEncoder *  encoder )

inline

Member Function Documentation

audioInfo()

AudioInfo audioInfo ( )

inlineoverridevirtual

provides the actual input AudioInfo

Reimplemented from AudioEncoder.

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 ( )

inlinevirtual

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()

virtual const char * mime ( )

inlinevirtual

Provides the mime type of the encoded result.

Implements AudioEncoder.

operator bool()

operator bool ( )

inlinevirtual

Implements AudioWriter.

output()

size_t output ( const uint8_t *  data, size_t  len  )

inlineprotected

samplesPerFrame()

virtual uint16_t samplesPerFrame ( )

inlinevirtualinherited

Optional rtsp function: provide samples per the frame.

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

setAudioInfo()

void setAudioInfo ( AudioInfo  from )

inlineoverridevirtual

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

Reimplemented from AudioEncoder.

setEncoder()

void setEncoder ( AudioEncoder *  encoder )

inline

setOutput()

void setOutput ( Print &  out_stream )

inlinevirtual

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

Reimplemented from AudioEncoder.

setVideoInfo()

void setVideoInfo ( VideoInfo  info )

inline

Defines the video track configuration (width/height/format/...) - the VideoHeader segment is (re-)sent before the next writeVideo() call.

videoInfo()

VideoInfo videoInfo ( )

inline

write()

size_t write ( const uint8_t *  data, size_t  len  )

inlinevirtual

Add data segment. On first write we also add a AudioInfo header.

Implements AudioWriter.

writeAudio()

void writeAudio ( const uint8_t *  data, size_t  len  )

inlineprotected

writeBlocking()

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

inlineprotectedinherited

writeHeader()

void writeHeader ( )

inlineprotected

writeMeta()

size_t writeMeta ( const uint8_t *  data, size_t  len  )

inline

Adds meta data segment.

writeVideo()

size_t writeVideo ( const uint8_t *  data, size_t  len  )

inline

Adds one already-encoded video/image frame (e.g. one H.264 access unit or one complete JPEG image) as a Video segment - a single call must provide the full frame. On the first call (or after setVideoInfo()) a VideoHeader segment is emitted first.

writeVideoHeader()

void writeVideoHeader ( )

inlineprotected

Member Data Documentation

cfg

SimpleContainerConfig cfg

protected

dh

SimpleContainerDataHeader dh

protected

info

AudioInfo info

protectedinherited

is_beginning

bool is_beginning = true

protected

is_video_beginning

bool is_video_beginning = true

protected

meta

SimpleContainerMetaDataHeader meta

protected

p_codec

AudioEncoder* p_codec = nullptr

protected

p_out

Print* p_out = nullptr

protected

packet_count

uint64_t packet_count = 0

protected

repeat_header

int repeat_header

protected

video_cfg

SimpleContainerVideoConfig video_cfg

protected

video_dh

SimpleContainerVideoDataHeader video_dh

protected

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

• src/AudioTools/AudioCodecs/ContainerBinary.h