EncoderL8 Class Reference

EncoderL8s - Condenses 16 bit PCM data stream to 8 bits data. Most microcontrollers can not process 8 bit audio data directly. 8 bit data however is very memory efficient and helps if you need to store audio on constrained resources. This encoder translates 16bit data into 8bit 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 EncoderL8:

Public Member Functions
	EncoderL8 (bool isSigned=false)
	EncoderL8 (Print &out)
void	begin () override
	starts the processing using the actual RAWAudioInfo
virtual void	begin (AudioInfo info)
void	begin (Print &out)
	starts the processing
int16_t	convertSample (int16_t sample)
void	end () override
	stops the processing
bool	isOpen ()
const char *	mime () override
	Provides "audio/pcm".
	operator bool () override
void	setAudioInfo (AudioInfo from) override
	We actually do nothing with this.
void	setOutput (Print &out_stream) override
	Defines the output Stream.
void	setSigned (bool isSigned)
	By default the encoded values are unsigned, but can change them to signed.
size_t	write (const void *in_ptr, size_t in_size) override
	Writes PCM data to be encoded as RAW.

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

Protected Attributes
Vector< int8_t >	buffer
bool	is_open
bool	is_signed = false
Print *	p_print = nullptr

Detailed Description

EncoderL8s - Condenses 16 bit PCM data stream to 8 bits data. Most microcontrollers can not process 8 bit audio data directly. 8 bit data however is very memory efficient and helps if you need to store audio on constrained resources. This encoder translates 16bit data into 8bit data. By default the encoded data is represented as uint8_t, so the values are from 0 to 255.

Author

Phil Schatzmann

Copyright

GPLv3

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

• src/AudioCodecs/CodecL8.h