表示音频的输出通道。 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 |
QAudioDevice | device () const |
bool | isMuted () const |
float | volume () const |
void | setDevice (const QAudioDevice & device ) |
void | setMuted (bool muted ) |
void | setVolume (float volume ) |
void | deviceChanged () |
void | mutedChanged (bool muted ) |
void | volumeChanged (float volume ) |
此类表示的输出通道可以一起使用同 QMediaPlayer or QMediaCaptureSession 。它使能够选定要使用的物理输出设备、静音通道及改变通道音量。
此特性保持连接到此输出的音频设备。
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 () |
This property holds the muted state of the current media.
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 ) |
此属性保存当前音量。
The volume is scaled linearly, ranging from
0
(无声) 到
1
(full volume).
注意: 值超出此范围将被钳制。
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 QtAudio::convertVolume ().