ADPCMEncoder Class Reference

Encoder for ADPCM - Depends on https://github.com/pschatzmann/adpcm> More...

#include <CodecADPCM.h>

Inheritance diagram for ADPCMEncoder:

Public Member Functions
	ADPCMEncoder ()=default
	ADPCMEncoder (AVCodecID id, int blockSize=ADAPCM_DEFAULT_BLOCK_SIZE)
	~ADPCMEncoder ()
	Destructor.
AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
bool	begin () override
virtual bool	begin (AudioInfo info)
int	blockSize () override
void	end () override
virtual uint32_t	frameDurationUs () override
	provides the frame duration in us (for rtsp)
int	frameSize ()
const char *	mime () override
	Provides the mime type of the encoded result.
	operator bool () override
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.
void	setBlockSize (int blockSize)
	(re) defines the block size
void	setId (AVCodecID id)
	(re) defines the codec id
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
virtual bool	encode (int16_t sample)
bool	setImplementation ()
	change the encoder implementation
void	writeBlocking (Print *out, uint8_t *data, size_t len)

Protected Attributes
int	block_size = ADAPCM_DEFAULT_BLOCK_SIZE
AVCodecID	codec_id = AV_CODEC_ID_ADPCM_MS
int	current_id = -1
int	current_sample = 0
AudioInfo	info
bool	is_started = false
adpcm_ffmpeg::ADPCMEncoder *	p_encoder = nullptr
Print *	p_print = nullptr
Vector< int16_t >	pcm_block
int	total_samples = 0

Detailed Description

Encoder for ADPCM - Depends on https://github.com/pschatzmann/adpcm

>

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

ADPCMEncoder() [1/2]

ADPCMEncoder ( )

default

ADPCMEncoder() [2/2]

ADPCMEncoder ( AVCodecID  id, int  blockSize = ADAPCM_DEFAULT_BLOCK_SIZE  )

inline

~ADPCMEncoder()

~ADPCMEncoder ( )

inline

Destructor.

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, and ResampleStreamT< TInterpolator >.

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.

blockSize()

int blockSize ( )

inlineoverridevirtual

Provides the block size (size of encoded frame) (only available after calling begin)

Implements AudioEncoderExt.

encode()

virtual bool encode ( int16_t  sample )

inlineprotectedvirtual

end()

void end ( )

inlineoverridevirtual

Implements AudioWriter.

frameDurationUs()

virtual uint32_t frameDurationUs ( )

inlineoverridevirtual

provides the frame duration in us (for rtsp)

Reimplemented from AudioEncoder.

frameSize()

int frameSize ( )

inline

Provides the frame size (size of decoded frame) (only available after calling begin)

mime()

const char * mime ( )

inlineoverridevirtual

Provides the mime type of the encoded result.

Implements AudioEncoder.

operator bool()

operator bool ( )

inlineoverridevirtual

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()

void setAudioInfo ( AudioInfo  from )

inlineoverridevirtualinherited

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

Implements AudioWriter.

Reimplemented in MP3EncoderLAME, EncoderBasic, CodecChain, DSFEncoder, FLACEncoder, MP3EncoderShine, OpusAudioEncoder, OpusMultiStreamAudioEncoder, WAVEncoder, CodecNOP, G7xxEncoder, G729Encoder, BinaryContainerEncoder, OggContainerEncoder, OSCContainerEncoder, and MetaDataFilterEncoder.

setBlockSize()

void setBlockSize ( int  blockSize )

inline

(re) defines the block size

setId()

void setId ( AVCodecID  id )

inline

(re) defines the codec id

setImplementation()

bool setImplementation ( )

inlineprotected

change the encoder implementation

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

block_size

int block_size = ADAPCM_DEFAULT_BLOCK_SIZE

protected

codec_id

AVCodecID codec_id = AV_CODEC_ID_ADPCM_MS

protected

current_id

int current_id = -1

protected

current_sample

int current_sample = 0

protected

info

AudioInfo info

protectedinherited

is_started

bool is_started = false

protected

p_encoder

adpcm_ffmpeg::ADPCMEncoder* p_encoder = nullptr

protected

p_print

Print* p_print = nullptr

protected

pcm_block

Vector<int16_t> pcm_block

protected

total_samples

int total_samples = 0

protected

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

• src/AudioTools/AudioCodecs/CodecADPCM.h