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

Decoder for ADPCM-XQ. Depends on https://github.com/pschatzmann/arduino-adpcm-xq. More...

#include <CodecADPCMXQ.h>

Inheritance diagram for ADPCMDecoderXQ:
AudioDecoder AudioWriter AudioInfoSource

Public Member Functions

virtual AudioInfo audioInfo ()
 
void begin () override
 
virtual void begin (AudioInfo info)
 
void end () override
 
virtual bool isResultPCM ()
 If true, the decoding result is PCM data.
 
 operator bool () override
 
virtual void setAudioInfo (AudioInfo from) override
 for most decoders this is not needed
 
void setBlockSizePower (int pow)
 set bocksizes as 2^pow: range from 8 to 15
 
void setLookahead (int value)
 Set look ahead bytes from 0 to 8.
 
void setNoiseShaping (ADPCMNoiseShaping ns)
 Defines the noise shaping.
 
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)
 Defines where the decoded result is written to.
 
virtual size_t write (const void *input_buffer, size_t length)
 

Protected Member Functions

bool decode (int this_block_adpcm_samples)
 
void writeBlocking (Print *out, uint8_t *data, size_t len)
 

Protected Attributes

Vector< uint8_t > adpcm_block
 
void * adpcm_cnxt = nullptr
 
int block_size = 0
 
int block_size_pow2 = 0
 
int current_byte = 0
 
AudioInfo info
 
int32_t initial_deltas [2] = {0}
 
int lookahead = 0
 
int noise_shaping = (int) NOISE_SHAPING_OFF
 
AudioInfoSupportp_notify = nullptr
 
Printp_print = nullptr
 
Vector< int16_t > pcm_block
 
int samples_per_block = 0
 

Detailed Description

Decoder for ADPCM-XQ. Depends on https://github.com/pschatzmann/arduino-adpcm-xq.

Author
Phil Schatzmann

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