VolumeHandler Class Reference

The VolumeHandler class provides volume control access. More...

#include <volumehandler.h>

Inheritance diagram for VolumeHandler:

Public Slots
void	checkVolume ()
void	reload ()

Signals
void	volumeChanged (int volume)
void	balanceChanged (int balance)
void	mutedChanged (bool muted)

Public Member Functions
	VolumeHandler (QObject *parent=nullptr)
	~VolumeHandler ()
void	setVolume (int left, int right)
void	changeVolume (int delta)
void	setVolume (int volume)
void	setBalance (int balance)
void	setMuted (bool muted)
int	left () const
int	right () const
int	volume () const
int	balance () const
bool	isMuted () const
void	apply (Buffer *b, int chan)

Static Public Member Functions
static VolumeHandler *	instance ()

Private Attributes
VolumeSettings	m_settings
bool	m_prev_block = false
std::atomic_bool	m_muted = ATOMIC_VAR_INIT(false)
std::atomic_bool	m_apply = ATOMIC_VAR_INIT(false)
QMutex	m_mutex
double	m_scaleLeft = 0
double	m_scaleRight = 0
Volume *	m_volume = nullptr
QTimer *	m_timer = nullptr

Static Private Attributes
static VolumeHandler *	m_instance

Detailed Description

The VolumeHandler class provides volume control access.

Author

Ilya Kotov forko.nosp@m.tov0.nosp@m.2@ya..nosp@m.ru

Definition at line 36 of file volumehandler.h.

Constructor & Destructor Documentation

VolumeHandler::VolumeHandler ( QObject *  parent = nullptr )

explicit

Object constructor.

Parameters

parent

Parent object.

VolumeHandler::~VolumeHandler

(

)

Destructor.

Member Function Documentation

void VolumeHandler::apply	(	Buffer *	b,
		int	chan
	)

Changes buffer volume (software mode only).

Parameters

b	Buffer pointer.
chan	Number of channels.

int VolumeHandler::balance

(

)

const

Returns the balance between left and right channels.

void VolumeHandler::balanceChanged ( int  balance )

signal

Emitted when the balance between left and right channels has changed.

Parameters

balance

New balance value.

void VolumeHandler::changeVolume

(

int

delta

)

Changes volume by delta percent

void VolumeHandler::checkVolume ( )

slot

Forces the volumeChanged signal to emit.

static VolumeHandler* VolumeHandler::instance ( )

static

Returns a pointer to the global VolumeHandler instance.

bool VolumeHandler::isMuted

(

)

const

Returns true if volume is muted, otherwise returns false.

int VolumeHandler::left

(

)

const

Returns left channel volume.

void VolumeHandler::mutedChanged ( bool  muted )

signal

Emitted when volume mute state has changed

Parameters

muted

New volume mute state.

void VolumeHandler::reload ( )

slot

Updates volume configuration

int VolumeHandler::right

(

)

const

Returns right channel volume.

void VolumeHandler::setBalance

(

int

balance

)

Sets the balance between left and right channels.

Parameters

balance

balance between left and right channels [-100..100].

void VolumeHandler::setMuted

(

bool

muted

)

Sets volume mute state to muted.

void VolumeHandler::setVolume	(	int	left,
		int	right
	)

Setups volume level. Subclass should reimplement this fucntion.

Parameters

left	Left channel volume level. It should be 0..100
right	Right channel volume level. It should be 0..100

void VolumeHandler::setVolume

(

int

volume

)

Sets the volume of the left and right channels with keeping of the balance.

Parameters

volume

volume of the left and right channels [0..100].

int VolumeHandler::volume

(

)

const

Returns the maximum volume of the left and right channels.

void VolumeHandler::volumeChanged ( int  volume )

signal

Emitted when the highest volume of the left and right channels has changed.

Parameters

volume

New value of the highest volume of the left and right channels.

Member Data Documentation

std::atomic_bool VolumeHandler::m_apply = ATOMIC_VAR_INIT(false)

private

Definition at line 137 of file volumehandler.h.

VolumeHandler* VolumeHandler::m_instance

staticprivate

Definition at line 142 of file volumehandler.h.

std::atomic_bool VolumeHandler::m_muted = ATOMIC_VAR_INIT(false)

private

Definition at line 136 of file volumehandler.h.

QMutex VolumeHandler::m_mutex

private

Definition at line 138 of file volumehandler.h.

bool VolumeHandler::m_prev_block = false

private

Definition at line 135 of file volumehandler.h.

double VolumeHandler::m_scaleLeft = 0

private

Definition at line 139 of file volumehandler.h.

double VolumeHandler::m_scaleRight = 0

private

Definition at line 139 of file volumehandler.h.

VolumeSettings VolumeHandler::m_settings

private

Definition at line 134 of file volumehandler.h.

QTimer* VolumeHandler::m_timer = nullptr

private

Definition at line 141 of file volumehandler.h.

Volume* VolumeHandler::m_volume = nullptr

private

Definition at line 140 of file volumehandler.h.

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

• TTKThirdParty/TTKqmmp/qmmp/volumehandler.h