arduino-audio-tools
Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
SBCDecoder Class Reference

Decoder for SBC. Depends on https://github.com/pschatzmann/arduino-libsbc. Inspired by sbcdec.c. More...

#include <CodecSBC.h>

Inheritance diagram for SBCDecoder:
AudioDecoder AudioWriter AudioInfoSource

Public Member Functions

 SBCDecoder (int bufferSize=8192)
 
virtual AudioInfo audioInfo ()
 
virtual void begin ()
 
virtual void begin (AudioInfo info)
 
int bytesCompressed ()
 Provides the compressed length in bytes (after encoding)
 
int bytesUncompressed ()
 
virtual void end ()
 
virtual bool isResultPCM ()
 If true, the decoding result is PCM data.
 
 operator bool ()
 
virtual void setAudioInfo (AudioInfo from) override
 for most decoders this is not needed
 
virtual void setNotifyAudioChange (AudioInfoSupport &bi)
 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)
 Defines where the decoded result is written to.
 
virtual size_t write (const void *data, size_t length)
 

Protected Member Functions

int codeSize ()
 
int firstWrite (const void *data, size_t length)
 Determines the framelen.
 
int frameLength ()
 Provides the compressed length in bytes (after encoding)
 
bool isValidFrameLen (int len)
 
void processByte (uint8_t byte)
 Build decoding buffer and decode when frame is full.
 
void setupAudioInfo ()
 Process audio info.
 
void setupInputBuffer (int len)
 
void writeBlocking (Print *out, uint8_t *data, size_t len)
 

Protected Attributes

int framelen
 
AudioInfo info
 
uint8_t * input_buffer = nullptr
 
int input_pos = 0
 
bool is_active = false
 
bool is_first = true
 
AudioInfoSupportp_notify = nullptr
 
Printp_print = nullptr
 
uint8_t * result_buffer = nullptr
 
int result_buffer_size
 
sbc_t sbc
 

Detailed Description

Decoder for SBC. Depends on https://github.com/pschatzmann/arduino-libsbc. Inspired by sbcdec.c.

Author
Phil Schatzmann

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