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CMediaSample.GetMediaType method

The GetMediaType method retrieves the media type, if the media type differs from the previous sample. This method implements the IMediaSample::GetMediaType method.

Syntax


HRESULT GetMediaType(
  AM_MEDIA_TYPE **ppMediaType
);

Parameters

ppMediaType

Address of a variable that receives a pointer to an AM_MEDIA_TYPE structure. If the media type has not changed from the previous sample, *ppMediaType is set to NULL.

Return value

Returns one of the HRESULT values shown in the following table.

Return codeDescription
S_FALSE

The media type has not changed from the previous sample.

S_OK

Success.

E_OUTOFMEMORY

Insufficient memory.

 

Remarks

When you are done with the media type, free the memory block by calling the DeleteMediaType utility function.

The CMediaSample::m_pMediaType member variable specifies the media type. The CMediaSample::m_dwFlags member variable specifies whether the media type has changed.

Requirements

Header

Amfilter.h (include Streams.h)

Library

Strmbase.lib (retail builds);
Strmbasd.lib (debug builds)

See also

CMediaSample Class

 

 

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