|Microsoft DirectX 9.0|
The GetProperties method retrieves the properties of a media sample.
HRESULT GetProperties( DWORD cbProperties, BYTE *pbProperties );
[in] Length of property data to retrieve, in bytes.
[out] Pointer to a buffer of size cbProperties.
Returns an HRESULT value. Possible values include the following.
|E_POINTER||NULL pointer argument.|
The retrieved data conforms to the format of the AM_SAMPLE2_PROPERTIES structure. You can retrieve a subset of the sample properties by setting cbProperties to a value less than the size of the AM_SAMPLE2_PROPERTIES structure.
For efficiency, the pMediaType member returned in AM_SAMPLE2_PROPERTIES is a pointer to the data stored in the media sample, not a copy of that data. The pointer may become invalid after the sample is passed to another filter, or after the input pin's IMemInputPin::Receive method has completed. Also, do not free the pointer or delete the media type.