arduino-audio-tools
Public Member Functions | Public Attributes | 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 AudioInfoSupport

Public Member Functions

virtual void addNotifyAudioChange (AudioInfoSupport &bi)
 Adds target to be notified about audio changes.
 
virtual AudioInfo audioInfo ()
 provides the actual input AudioInfo
 
virtual AudioInfo audioInfoOut ()
 provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream
 
bool begin () override
 
virtual bool begin (AudioInfo info) override
 
virtual void clearNotifyAudioChange ()
 Deletes all change notify subscriptions.
 
void end () override
 
bool isNotifyActive ()
 Checks if the automatic AudioInfo update is active.
 
virtual bool isResultPCM ()
 If true, the decoding result is PCM data.
 
 operator bool () override
 
virtual bool removeNotifyAudioChange (AudioInfoSupport &bi)
 Removes a target in order not to be notified about audio changes.
 
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 setNotifyActive (bool flag)
 Deactivate/Reactivate automatic AudioInfo updates: (default is active)
 
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 uint8_t *data, size_t len)
 

Public Attributes

int id
 custom id to be used by application
 

Protected Member Functions

bool decode (int this_block_adpcm_samples)
 
void notifyAudioChange (AudioInfo info)
 
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}
 
bool is_notify_active = true
 
int lookahead = 0
 
int noise_shaping = (int) NOISE_SHAPING_OFF
 
Vector< AudioInfoSupport * > notify_vector
 
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: