QAudioOutput 類

Represents an output channel for audio. 更多...

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

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特性

device : QAudioDevice
muted : bool
volume : float

公共函數

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 )

信號

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

詳細描述

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.

特性文檔編製

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 對象。

訪問函數：

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

通知程序信號：

void	deviceChanged ()

muted : bool

此特性保持當前媒體的靜音狀態。

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

訪問函數：

bool	isMuted () const
void	setMuted (bool muted )

通知程序信號：

void	mutedChanged (bool muted )

volume : float

This property holds the current volume.

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

注意： values outside this range will be clamped.

默認情況下，音量為 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.

訪問函數：

float	volume () const
void	setVolume (float volume )

通知程序信號：

void	volumeChanged (float volume )

另請參閱 QAudio::convertVolume ().