MP3ParserEncoder Class Reference

Parses MP3 frames, extracts audio info, and outputs complete frames. The frame duration is determined e.g. for RTSP streaming. More...

#include <MP3Parser.h>

Inheritance diagram for MP3ParserEncoder:

Public Member Functions
	MP3ParserEncoder (int bufferSize=1024 *2)
AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
bool	begin () override
virtual bool	begin (AudioInfo info)
void	end () override
uint32_t	frameDurationUs () override
	Optional rtsp function: provide the frame duration in microseconds.
virtual const char *	mime () override
	Provides the mime type of the encoded result.
	operator bool () override
uint16_t	samplesPerFrame () override
	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	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
int	buffer_size = 0
AudioInfo	info
HeaderParserMP3	mp3

Detailed Description

Parses MP3 frames, extracts audio info, and outputs complete frames. The frame duration is determined e.g. for RTSP streaming.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

MP3ParserEncoder()

MP3ParserEncoder ( int  bufferSize = 1024 * 2 )

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 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 OggContainerEncoder, DecoderBasic, AudioDecoder, AACEncoderFDK, OggContainerDecoder, and MetaDataFilterEncoder.

end()

void end ( )

inlineoverridevirtual

Implements AudioWriter.

frameDurationUs()

uint32_t frameDurationUs ( )

inlineoverridevirtual

Optional rtsp function: provide the frame duration in microseconds.

Reimplemented from AudioEncoder.

mime()

virtual const char * mime ( )

inlineoverridevirtual

Provides the mime type of the encoded result.

Implements AudioEncoder.

operator bool()

operator bool ( )

inlineoverridevirtual

Implements AudioWriter.

samplesPerFrame()

uint16_t samplesPerFrame ( )

inlineoverridevirtual

Optional rtsp function: provide samples per the frame.

Reimplemented from AudioEncoder.

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, G729Encoder, 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.

writeBlocking()

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

inlineprotectedinherited

Member Data Documentation

buffer_size

int buffer_size = 0

protected

info

AudioInfo info

protectedinherited

mp3

HeaderParserMP3 mp3

protected

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

• src/AudioTools/AudioCodecs/MP3Parser.h