arduino-audio-tools
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Equilizer3Bands Class Reference

3 Band Equilizer inspired from https://www.musicdsp.org/en/latest/Filters/236-3-band-equaliser.html More...

#include <Equilizer.h>

Inheritance diagram for Equilizer3Bands:
ModifyingStream AudioStream BaseStream AudioInfoSupport AudioInfoSource Stream Print

Classes

struct  EQSTATE
 

Public Member Functions

 Equilizer3Bands (AudioOutput &out)
 
 Equilizer3Bands (AudioStream &stream)
 
 Equilizer3Bands (Print &out)
 
 Equilizer3Bands (Stream &in)
 
virtual void addNotifyAudioChange (AudioInfoSupport &bi)
 Adds target to be notified about audio changes.
 
virtual AudioInfo audioInfo () override
 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
 
int available () override
 
int availableForWrite () override
 
virtual bool begin ()
 
bool begin (ConfigEquilizer3Bands &config)
 
virtual void clearNotifyAudioChange ()
 Deletes all change notify subscriptions.
 
ConfigEquilizer3Bandsconfig ()
 
ConfigEquilizer3BandsdefaultConfig ()
 
virtual void end ()
 
virtual void flush () override
 
bool isNotifyActive ()
 Checks if the automatic AudioInfo update is active.
 
virtual operator bool ()
 
size_t readBytes (uint8_t *data, size_t len) override
 Provides the data from all streams mixed together.
 
virtual size_t readSilence (uint8_t *buffer, size_t length)
 Source to generate silence: just sets the buffer to 0.
 
virtual bool removeNotifyAudioChange (AudioInfoSupport &bi)
 Removes a target in order not to be notified about audio changes.
 
virtual void setAudioInfo (AudioInfo info) override
 Defines the input AudioInfo.
 
void setNotifyActive (bool flag)
 Deactivate/Reactivate automatic AudioInfo updates: (default is active)
 
void setOutput (Print &out) override
 Defines/Changes the output target.
 
void setStream (Stream &io) override
 Defines/Changes the input & output.
 
size_t write (const uint8_t *data, size_t len) override
 
virtual size_t write (uint8_t ch) override
 
virtual void writeSilence (size_t len)
 Writes len bytes of silence (=0).
 

Protected Member Functions

void filterSamples (const uint8_t *data, size_t len)
 
virtual int not_supported (int out, const char *msg="")
 
void notifyAudioChange (AudioInfo info)
 
void refillReadBuffer ()
 
float sample (EQSTATE &es, float sample)
 

Protected Attributes

int _timeout = 10
 
ConfigEquilizer3Bands cfg
 
AudioInfo info
 
bool is_notify_active = true
 
int max_state_count = 0
 
Vector< AudioInfoSupport * > notify_vector
 
ConfigEquilizer3Bandsp_cfg = &cfg
 
Printp_print = nullptr
 
Streamp_stream = nullptr
 
struct audio_tools::Equilizer3Bands::EQSTATEstate = nullptr
 
RingBuffer< uint8_t > tmp_in {0}
 
RingBuffer< uint8_t > tmp_out {0}
 
const float vsa = (1.0 / 4294967295.0)
 

Detailed Description

3 Band Equilizer inspired from https://www.musicdsp.org/en/latest/Filters/236-3-band-equaliser.html

Author
pschatzmann

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