QAudioOutput 类

Represents an output channel for audio. 更多...

头：	#include <QAudioOutput>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Multimedia) target_link_libraries(mytarget PRIVATE Qt6::Multimedia)
qmake:	QT += multimedia
实例化：	AudioOutput
继承：	QObject

所有成员列表，包括继承成员

特性

device : QAudioDevice
muted : bool
volume : float

公共函数

QAudioDevice	device () const
bool	isMuted () const
float	volume () const

公共槽

void	setDevice (const QAudioDevice & device )
void	setMuted (bool muted )
void	setVolume (float volume )

信号

void	deviceChanged ()
void	mutedChanged (bool muted )
void	volumeChanged (float volume )

详细描述

This class represents an output channel that can be used together with QMediaPlayer or QMediaCaptureSession . It enables the selection of the physical output device to be used, muting the channel, and changing the channel's volume.

特性文档编制

device : QAudioDevice

This property holds the audio device connected to this output.

The device property represents the audio device this output is connected to. This property can be used to select an output device from the QMediaDevices::audioOutputs () list. You can select the system default audio output by setting this property to a default constructed QAudioDevice 对象。

访问函数：

QAudioDevice	device () const
void	setDevice (const QAudioDevice & device )

通知程序信号：

void	deviceChanged ()

muted : bool

此特性保持当前媒体的静音状态。

The value will be true if the output is muted; otherwise false .

访问函数：

bool	isMuted () const
void	setMuted (bool muted )

通知程序信号：

void	mutedChanged (bool muted )

volume : float

This property holds the current volume.

The volume is scaled linearly, ranging from 0 (无声) 到 1 (full volume).

注意： values outside this range will be clamped.

默认情况下，音量为 1 .

UI volume controls should usually be scaled non-linearly. For example, using a logarithmic scale will produce linear changes in perceived loudness, which is what a user would normally expect from a volume control.

访问函数：

float	volume () const
void	setVolume (float volume )

通知程序信号：

void	volumeChanged (float volume )

另请参阅 QAudio::convertVolume ().