DecoderL8 Class Reference

DecoderL8 - Converts an 8 Bit Stream into 16Bits Most microcontrollers can not output 8 bit data directly. 8 bit data however is very memory efficient and helps if you need to store audio on constrained resources. This decoder translates 8bit data into 16bit data. By default the encoded data is represented as uint8_t, so the values are from 0 to 255. More...

#include <CodecL8.h>

Inheritance diagram for DecoderL8:

Public Member Functions
	DecoderL8 (bool isSigned=false)
	Construct a new DecoderL8 object.
	DecoderL8 (Print &out_stream, AudioInfoSupport &bi)
	Construct a new DecoderL8 object. More...
	DecoderL8 (Print &out_stream, bool active=true)
	Construct a new DecoderL8 object. More...
virtual AudioInfo	audioInfo ()
void	begin () override
void	begin (AudioInfo info1) override
int16_t	convertSample (int16_t in)
void	end () override
virtual bool	isResultPCM ()
	If true, the decoding result is PCM data.
virtual	operator bool () override
virtual void	setAudioInfo (AudioInfo from) override
	for most decoders this is not needed
void	setNotifyAudioChange (AudioInfoSupport &notify) override
	Registers an object that is notified if the audio format is changing.
virtual void	setOutput (AudioOutput &out_stream)
	Defines where the decoded result is written to.
virtual void	setOutput (AudioStream &out_stream)
	Defines where the decoded result is written to.
virtual void	setOutput (Print &out_stream) override
	Defines where the decoded result is written to.
void	setSigned (bool isSigned)
virtual size_t	write (const void *in_ptr, size_t in_size) override

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

Protected Attributes
bool	active
Vector< int16_t >	buffer
AudioInfo	info
bool	is_signed = false
AudioInfoSupport *	p_notify = nullptr
Print *	p_print = nullptr

Detailed Description

DecoderL8 - Converts an 8 Bit Stream into 16Bits Most microcontrollers can not output 8 bit data directly. 8 bit data however is very memory efficient and helps if you need to store audio on constrained resources. This decoder translates 8bit data into 16bit data. By default the encoded data is represented as uint8_t, so the values are from 0 to 255.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

DecoderL8() [1/2]

DecoderL8 ( Print &  out_stream, bool  active = true  )

inline

Construct a new DecoderL8 object.

Parameters

out_stream

Output Stream to which we write the decoded result

DecoderL8() [2/2]

DecoderL8 ( Print &  out_stream, AudioInfoSupport &  bi  )

inline

Construct a new DecoderL8 object.

Parameters

out_stream	Output Stream to which we write the decoded result
bi	Object that will be notified about the Audio Formt (Changes)

Member Function Documentation

setSigned()

void setSigned ( bool  isSigned )

inline

By default the encoded values are unsigned, but you can change them to signed

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

• src/AudioCodecs/CodecL8.h