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MediaStreamSourceStartingRequest class

Applies to Windows and Windows Phone

Represents a request from the MediaStreamSource.Starting event for the application to start accumulating MediaStreamSample objects from a specific position in the media.

Syntax

Public NotInheritable Class MediaStreamSourceStartingRequest

Attributes

[DualApiPartition()]
[MarshalingBehavior(Agile)]
[Threading(Both)]
[Version(0x06030000)]

Members

The MediaStreamSourceStartingRequest class has these types of members:

Methods

The MediaStreamSourceStartingRequest class has these methods. With C#, Visual Basic, and C++, it also inherits methods from the Object class.

MethodDescription
GetDeferral Defers completing the MediaStreamSource.Starting event.
SetActualStartPosition Specifies the starting position in the media time-line for subsequent MediaStreamSamples that will be delivered to the MediaStreamSource.

 

Properties

The MediaStreamSourceStartingRequest class has these properties.

PropertyAccess typeDescription

StartPosition

Read-onlySpecifies a reference to a TimeSpan object which represents a time position in the media time-line from which the application should return MediaStreamSample objects.

 

Remarks

You can use a deferral when you want to make an asynchronous call in response to the Starting event. For example, if you need to establish a HTTP connection or open a file for reading. The MediaStreamSource will then wait for you to mark the deferral as complete before it begins raising the SampleRequested event.

To create a deferral, call the GetDeferral method to instruct the MediaStreamSource to wait for your asynchronous call to complete. When you are ready to start receiving SampleRequested events, call the Complete method to end the deferral.

See the MediaStreamSource Sample for an example of using Media Stream Source in a Windows Store app.

Requirements

Minimum supported client

Windows 8.1 [Windows Store apps, desktop apps]

Minimum supported server

Windows Server 2012 R2 [Windows Store apps, desktop apps]

Minimum supported phone

Windows Phone 8.1 [Windows Phone Silverlight 8.1 and Windows Runtime apps]

Namespace

Windows.Media.Core
Windows::Media::Core [C++]

Metadata

Windows.winmd

See also

Object
MediaStreamSource Sample

 

 

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