内容

• 公共函数
• 信号
• 详细描述

QPlatformAudioSink Class

The QPlatformAudioSink class is a base class for audio backends. 更多...

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

• 所有成员列表，包括继承成员

公共函数

virtual qsizetype	bufferSize () const = 0
virtual qsizetype	bytesFree () const = 0
virtual QAudio::Error	error () const = 0
virtual QAudioFormat	format () const = 0
virtual qint64	processedUSecs () const = 0
virtual void	reset () = 0
virtual void	resume () = 0
virtual void	setBufferSize (qsizetype value ) = 0
virtual void	setFormat (const QAudioFormat & fmt ) = 0
virtual void	setVolume (qreal volume )
virtual void	start (QIODevice * device ) = 0
virtual QIODevice *	start () = 0
virtual QAudio::State	state () const = 0
virtual void	stop () = 0
virtual void	suspend () = 0
virtual qreal	volume () const

信号

void	errorChanged (QAudio::Error error )
void	stateChanged (QAudio::State state )

详细描述

QPlatformAudioSink implements audio functionality for QAudioSink ，即： QAudioSink routes function calls to QPlatformAudioSink. For a description of the functionality that is implemented, see the QAudioSink class and function descriptions.

另请参阅 QAudioSink .

成员函数文档编制

[signal] void QPlatformAudioSink:: errorChanged ( QAudio::Error error )

此信号被发射当 error state has changed.

[signal] void QPlatformAudioSink:: stateChanged ( QAudio::State state )

此信号被发射当设备 state 已改变。

[pure virtual] qsizetype QPlatformAudioSink:: bufferSize () const

Returns the audio buffer size in bytes.

另请参阅 setBufferSize ().

[pure virtual] qsizetype QPlatformAudioSink:: bytesFree () const

Returns the free space available in bytes in the audio buffer.

[pure virtual] QAudio::Error QPlatformAudioSink:: error () const

返回错误状态。

[pure virtual] QAudioFormat QPlatformAudioSink:: format () const

返回 QAudioFormat 被使用。

另请参阅 setFormat ().

[pure virtual] qint64 QPlatformAudioSink:: processedUSecs () const

Returns the amount of audio data processed since start () was called in milliseconds.

[pure virtual] void QPlatformAudioSink:: reset ()

Drops all audio data in the buffers, resets buffers to zero.

[pure virtual] void QPlatformAudioSink:: resume ()

Resumes processing audio data after a suspend ()

[pure virtual] void QPlatformAudioSink:: setBufferSize ( qsizetype value )

Sets the audio buffer size to value in bytes.

另请参阅 bufferSize ().

[pure virtual] void QPlatformAudioSink:: setFormat (const QAudioFormat & fmt )

设置 QAudioFormat to use to fmt . Setting the format is only allowable while in QAudio::StoppedState .

另请参阅 format ().

[虚拟] void QPlatformAudioSink:: setVolume ( qreal volume )

Sets the volume. Where volume is between 0.0 and 1.0.

另请参阅 volume ().

[pure virtual] void QPlatformAudioSink:: start ( QIODevice * device )

使用 device 作为 QIODevice to transfer data.

[pure virtual] QIODevice *QPlatformAudioSink:: start ()

返回指针指向 QIODevice being used to handle the data transfer. This QIODevice can be used to write() audio data directly.

[pure virtual] QAudio::State QPlatformAudioSink:: state () const

返回音频处理的状态。

[pure virtual] void QPlatformAudioSink:: stop ()

Stops the audio output.

[pure virtual] void QPlatformAudioSink:: suspend ()

Stops processing audio data, preserving buffered audio data.

[虚拟] qreal QPlatformAudioSink:: volume () const

Returns the volume in the range 0.0 and 1.0.

另请参阅 setVolume ().