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Determines the media type associated with the current connection of the pin. This method fails if the pin is unconnected.
HRESULT ConnectionMediaType( AM_MEDIA_TYPE * pmt );
Parameters
- pmt
- [out] Pointer to an
AM_MEDIA_TYPEstructure. If the pin is connected, the media type
is returned. Otherwise, the structure is initialized to a default
state in which all elements are 0, with the exception of
lSampleSize, which is set to 1, and
bFixedSizeSamples, which is set to TRUE.
Return Values
Returns an HRESULTvalue that depends on the implementation. HRESULTcan be one of the following standard constants, or other values not listed.
E_FAIL Failure. E_POINTER Null pointer argument. E_INVALIDARG Invalid argument. E_NOTIMPL Method isn't supported. S_OK or NOERROR Success. Remarks
The returned structure can contain an allocated format block and a reference-counted IUnknowninterface pointer. These resources should be released by calling the FreeMediaTypeutility function.
This method is implemented in the base classes by CBasePin::ConnectionMediaType.