CSourceStream::GetMediaType

  • 项目

Fills out the fields of the CMediaType object to the supported media type.

virtual HRESULT GetMediaType(
int iPosition,
CMediaType* pMediaType 
);

virtual HRESULT GetMediaType(
CMediaType* pMediaType 
);

Parameters

  • iPosition
    Position of the media type within a list of multiple media types. Range is zero through n.
  • pMediaType
    Pointer to a CMediaType object to be set to the requested format.

Return Values

Returns one of the following HRESULT values.

Value Description
Error Code Media type could not be set.
S_FALSE Media type exists but is not currently usable.
S_OK Media type was set.
VFW_S_NO_MORE_ITEMS End of the list of media types has been reached.

Remarks

This member function sets the requested media type. If only a single media type is supported, override this member function with the single-parameter definition. Only the default implementations of the CSourceStream::CheckMediaType and CSourceStream::GetMediaType member functions call the single media type member function.

Override the single-version GetMediaType or the two-parameter version, CheckMediaType.

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header:

Last updated on Wednesday, April 13, 2005

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