MFCreatePresentationDescriptor function (mfidl.h)

Creates a presentation descriptor.

Syntax

HRESULT MFCreatePresentationDescriptor(
  DWORD                     cStreamDescriptors,
  IMFStreamDescriptor       **apStreamDescriptors,
  IMFPresentationDescriptor **ppPresentationDescriptor
);

Parameters

cStreamDescriptors

Number of elements in the apStreamDescriptors array.

apStreamDescriptors

Array of IMFStreamDescriptor interface pointers. Each pointer represents a stream descriptor for one stream in the presentation.

ppPresentationDescriptor

Receives a pointer to an IMFPresentationDescriptor interface of the presentation descriptor. The caller must release the interface.

Return value

If this function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

If you are writing a custom media source, you can use this function to create the source presentation descriptor. The presentation descriptor is created with no streams selected. Generally, a media source should select at least one stream by default. To select a stream, call IMFPresentationDescriptor::SelectStream.

This function is available on the following platforms if the Windows Media Format 11 SDK redistributable components are installed:

• Windows XP with Service Pack 2 (SP2) and later.
• Windows XP Media Center Edition 2005 with KB900325 (Windows XP Media Center Edition 2005) and KB925766 (October 2006 Update Rollup for Windows XP Media Center Edition) installed.

Requirements

See also

Media Foundation Functions

Presentation Descriptors