内容

• 公共函数
• 详细描述

QMediaContent 类

The QMediaContent class provides access to the resources relating to a media content. 更多...

头：	#include <QMediaContent>
qmake:	QT += multimedia

• 所有成员列表，包括继承成员

公共函数

	QMediaContent ()
	QMediaContent (const QUrl & url )
	QMediaContent (const QNetworkRequest & request )
	QMediaContent (const QMediaResource & resource )
	QMediaContent (const QMediaResourceList & resources )
	QMediaContent (const QMediaContent & other )
	QMediaContent (QMediaPlaylist * playlist , const QUrl & contentUrl = QUrl(), bool takeOwnership = false)
	~QMediaContent ()
QNetworkRequest	canonicalRequest () const
QMediaResource	canonicalResource () const
QUrl	canonicalUrl () const
bool	isNull () const
QMediaPlaylist *	playlist () const
QMediaResourceList	resources () const
bool	operator!= (const QMediaContent & other ) const
QMediaContent &	operator= (const QMediaContent & other )
bool	operator== (const QMediaContent & other ) const

详细描述

The QMediaContent class provides access to the resources relating to a media content.

QMediaContent is used within the multimedia framework as the logical handle to media content. A QMediaContent object is composed of one or more QMediaResource s where each resource provides the URL and format information of a different encoding of the content.

A non-null QMediaContent will always have a primary or canonical reference to the content available through the canonicalUrl () 或 canonicalResource () methods, any additional resources are optional.

Alternatively QMediaContent can represent a playlist and contain a pointer to a valid QMediaPlaylist object. In this case URL is optional and can either be empty or point to the playlist URL.

成员函数文档编制

QMediaContent:: QMediaContent ()

Constructs a null QMediaContent .

QMediaContent:: QMediaContent (const QUrl & url )

构造媒体内容采用 url 提供内容引用。

QMediaContent:: QMediaContent (const QNetworkRequest & request )

构造媒体内容采用 request 提供内容引用。

This constructor can be used to reference media content via network protocols such as HTTP. This may include additional information required to obtain the resource, such as Cookies or HTTP headers.

QMediaContent:: QMediaContent (const QMediaResource & resource )

构造媒体内容采用 resource 提供内容引用。

QMediaContent:: QMediaContent (const QMediaResourceList & resources )

构造媒体内容采用 resources 提供内容引用。

QMediaContent:: QMediaContent (const QMediaContent & other )

Constructs a copy of the media content other .

QMediaContent:: QMediaContent ( QMediaPlaylist * playlist , const QUrl & contentUrl = QUrl(), bool takeOwnership = false)

构造媒体内容采用 playlist .

contentUrl of a playlist is an optional parameter and can be empty.

Set takeOwnership to true if you want QMediaContent to take ownership of the playlist. takeOwnership is set to false by default.

QMediaContent:: ~QMediaContent ()

Destroys the media content object.

QNetworkRequest QMediaContent:: canonicalRequest () const

Returns a QNetworkRequest that represents that canonical resource for this media content.

QMediaResource QMediaContent:: canonicalResource () const

返回 QMediaResource that represents that canonical resource for this media content.

QUrl QMediaContent:: canonicalUrl () const

返回 QUrl that represents that canonical resource for this media content.

bool QMediaContent:: isNull () const

Returns true if this media content is null (uninitialized); false otherwise.

QMediaPlaylist *QMediaContent:: playlist () const

Returns a playlist for this media content or 0 if this QMediaContent is not a playlist.

QMediaResourceList QMediaContent:: resources () const

Returns a list of alternative resources for this media content. The first item in this list is always the canonical resource.

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

返回 true 若 other is not equivalent to this media content; false otherwise.

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

Assigns the value of other to this media content.

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

返回 true 若 other is equivalent to this media content; false otherwise.