QCameraFormat 类

QCameraFormat 类描述摄像头设备所支持的视频格式。 更多...

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

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特性

• maxFrameRate : const float
• minFrameRate : const float
• pixelFormat : const QVideoFrameFormat::PixelFormat
• resolution : const QSize

公共函数

	QCameraFormat ()
	QCameraFormat (const QCameraFormat & other )
	~QCameraFormat ()
bool	isNull () const
float	maxFrameRate () const
float	minFrameRate () const
QVideoFrameFormat::PixelFormat	pixelFormat () const
QSize	resolution () const
bool	operator!= (const QCameraFormat & other ) const
QCameraFormat &	operator= (const QCameraFormat & other )
bool	operator== (const QCameraFormat & other ) const

详细描述

QCameraFormat represents a certain video format supported by a camera device.

The format is a combination of a 像素格式 , resolution and a range of frame rates.

QCameraFormat objects can be queried from QCameraDevice to inspect the set of supported video formats.

另请参阅 QCameraDevice and QCamera .

特性文档编制

[read-only] maxFrameRate : const float

Returns the highest frame rate defined by this format.

In 6.2, the camera will always try to use the highest frame rate supported by a certain video format.

访问函数：

float

maxFrameRate () const

[read-only] minFrameRate : const float

Returns the lowest frame rate defined by this format.

访问函数：

float

minFrameRate () const

[read-only] pixelFormat : const QVideoFrameFormat::PixelFormat

Returns the pixel format.

Most commonly this is either QVideoFrameFormat::Format_Jpeg or QVideoFrameFormat::Format_YUVY but other formats could also be supported by the camera.

访问函数：

QVideoFrameFormat::PixelFormat

pixelFormat () const

另请参阅 QVideoFrameFormat::PixelFormat .

[read-only] resolution : const QSize

Returns the resolution.

访问函数：

QSize

resolution () const

成员函数文档编制

QCameraFormat:: QCameraFormat ()

Constructs a null camera format.

另请参阅 isNull ().

QCameraFormat:: QCameraFormat (const QCameraFormat & other )

Copy constructs a camera format from the other 格式。

QCameraFormat:: ~QCameraFormat ()

Destructs the camera format object.

bool QCameraFormat:: isNull () const

Returns true if this is a default constructed QCameraFormat .

bool QCameraFormat:: operator!= (const QCameraFormat & other ) const

返回 false 若 other format is equal to this camera format, otherwise true .

QCameraFormat &QCameraFormat:: operator= (const QCameraFormat & other )

赋值 other to this.

bool QCameraFormat:: operator== (const QCameraFormat & other ) const

返回 true 若 other format is equal to this camera format, otherwise false .

内容

• 特性

• 公共函数

• 详细描述