A class for controlling the volume of AudioMixer4 objects using a potentiometer. More...

#include <Audio/VolumeControl.hpp>

Inheritance diagram for VolumeControl< N >:

Collaboration diagram for VolumeControl< N >:

Public Member Functions
	VolumeControl (const Array< AudioMixer4 *, N > &mixers, pin_t analogPin, float maxGain=1.0)
	Create a new VolumeControl object. More...

void	update () override
	Read the potentiometer value, and adjust the gain of the mixers. More...

void	begin () override
	Initialize. More...

void	map (MappingFunction fn)
	Specify a mapping function that is applied to the raw analog value before setting the volume. More...

void	invert ()
	Invert the analog value. More...

void	enable ()
	Enable this updatable: insert it into the linked list of instances, so it gets updated automatically. More...

void	disable ()
	Disable this updatable: remove it from the linked list of instances, so it no longer gets updated automatically. More...

bool	isEnabled ()
	Check if this updatable is enabled. More...

Static Public Member Functions
static void	enable (Updatable *element)

static void	enable (Updatable &element)

static void	enable (U(&array)[N])

static void	disable (Updatable< Potentiometer > *element)

static void	disable (Updatable< Potentiometer > &element)

static void	disable (U(&array)[N])

static void	beginAll ()
	Begin all enabled instances of this class. More...

static void	updateAll ()
	Update all enabled instances of this class. More...

Protected Attributes
Updatable< Potentiometer > *	next

Updatable< Potentiometer > *	previous

Private Attributes
Array< AudioMixer4 *, N >	mixers

AH::FilteredAnalog	filteredAnalog

const float	maxGain

Static Private Attributes
static DoublyLinkedList< Updatable< Potentiometer > >	updatables

Detailed Description

template<uint8_t N>
class VolumeControl< N >

A class for controlling the volume of AudioMixer4 objects using a potentiometer.

Template Parameters

N	The number of mixers.

Examples: 1.Volume-Controlled-USB-DAC.ino, and 2.VU-Meter-OLED-USB-DAC.ino.

Definition at line 23 of file VolumeControl.hpp.

Constructor & Destructor Documentation

◆ VolumeControl()

VolumeControl	(	const Array< AudioMixer4 *, N > &	mixers,
		pin_t	analogPin,
		float	maxGain = `1.0`
	)

inline

Create a new VolumeControl object.

Parameters

mixers	An array of pointers to audio mixers. Only the pointers are saved, so the mixers should outlive this object.
analogPin	The analog pin with the potentiometer connected.
maxGain	The maximum gain for the mixers.

Definition at line 37 of file VolumeControl.hpp.

Member Function Documentation

◆ update()

void update ( )

inlineoverridevirtual

Read the potentiometer value, and adjust the gain of the mixers.

Implements Updatable< Potentiometer >.

Definition at line 44 of file VolumeControl.hpp.

◆ begin()

void begin ( )

inlineoverridevirtual

Initialize.

Implements Updatable< Potentiometer >.

Definition at line 56 of file VolumeControl.hpp.

◆ map()

void map ( MappingFunction fn )

inline

Specify a mapping function that is applied to the raw analog value before setting the volume.

Parameters

fn	A function pointer to the mapping function. This function should take the filtered analog value of \( 16 - \mathrm{ANALOG\_FILTER\_SHIFT\_FACTOR} \) bits as a parameter, and should return a value in the same range.

See also: FilteredAnalog::map

Definition at line 70 of file VolumeControl.hpp.

◆ invert()

void invert ( )

inline

Invert the analog value.

Definition at line 73 of file VolumeControl.hpp.

◆ enable() [1/4]

void enable ( )

inlineinherited

Enable this updatable: insert it into the linked list of instances, so it gets updated automatically.

Definition at line 45 of file Updatable.hpp.

◆ enable() [2/4]

static void enable ( Updatable< Potentiometer > * element )

inlinestaticinherited

Definition at line 85 of file Updatable.hpp.

◆ enable() [3/4]

static void enable ( Updatable< Potentiometer > & element )

inlinestaticinherited

Definition at line 87 of file Updatable.hpp.

◆ enable() [4/4]

static void enable ( U(&) array[N] )

inlinestaticinherited

Definition at line 90 of file Updatable.hpp.

◆ disable() [1/4]

void disable ( )

inlineinherited

Disable this updatable: remove it from the linked list of instances, so it no longer gets updated automatically.

Definition at line 55 of file Updatable.hpp.

◆ disable() [2/4]

static void disable ( Updatable< Potentiometer > * element )

inlinestaticinherited

Definition at line 95 of file Updatable.hpp.

◆ disable() [3/4]

static void disable ( Updatable< Potentiometer > & element )

inlinestaticinherited

Definition at line 97 of file Updatable.hpp.

◆ disable() [4/4]

static void disable ( U(&) array[N] )

inlinestaticinherited

Definition at line 100 of file Updatable.hpp.

◆ isEnabled()

bool isEnabled ( )

inlineinherited

Check if this updatable is enabled.

Note: Assumes that the updatable is not added to a different linked list by the user.

Definition at line 69 of file Updatable.hpp.

◆ beginAll()

static void beginAll ( )

inlinestaticinherited

Begin all enabled instances of this class.

See also: begin()

Definition at line 73 of file Updatable.hpp.

◆ updateAll()

static void updateAll ( )

inlinestaticinherited

Update all enabled instances of this class.

See also: update()

Examples: 2.VU-Meter-OLED-USB-DAC.ino.

Definition at line 80 of file Updatable.hpp.

Member Data Documentation

◆ mixers

Array<AudioMixer4 *, N> mixers

private

Definition at line 76 of file VolumeControl.hpp.

◆ filteredAnalog

AH::FilteredAnalog filteredAnalog

private

Definition at line 77 of file VolumeControl.hpp.

◆ maxGain

const float maxGain

private

Definition at line 78 of file VolumeControl.hpp.

◆ updatables

DoublyLinkedList< Updatable< Potentiometer > > updatables

staticprivateinherited

Definition at line 106 of file Updatable.hpp.

◆ next

Updatable< Potentiometer > * next

protectedinherited

Definition at line 305 of file LinkedList.hpp.

◆ previous

Updatable< Potentiometer > * previous

protectedinherited

Definition at line 306 of file LinkedList.hpp.

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

VolumeControl.hpp

Public Member Functions

Static Public Member Functions

Protected Attributes

Private Attributes

Static Private Attributes

Detailed Description

template<uint8_t N> class VolumeControl< N >

Constructor & Destructor Documentation

◆ VolumeControl()

Member Function Documentation

◆ update()

◆ begin()

◆ map()

◆ invert()

◆ enable() [1/4]

◆ enable() [2/4]

◆ enable() [3/4]

◆ enable() [4/4]

◆ disable() [1/4]

◆ disable() [2/4]

◆ disable() [3/4]

◆ disable() [4/4]

◆ isEnabled()

◆ beginAll()

◆ updateAll()

Member Data Documentation

◆ mixers

◆ filteredAnalog

◆ maxGain

◆ updatables

◆ next

◆ previous

template<uint8_t N>
class VolumeControl< N >