IMultiMediaStream::GetInformation method (mmstream.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
GetInformation
method retrieves the capabilities of the multimedia stream object.
Syntax
HRESULT GetInformation(
[out] DWORD *pdwFlags,
[out] STREAM_TYPE *pStreamType
);
Parameters
[out] pdwFlags
Pointer to a variable that receives a bitwise combination of the following flags.
Value | Description |
---|---|
MMSSF_ASYNCHRONOUS | The object supports asynchronous sample updates. This flag is always returned. |
MMSSF_HASCLOCK | The object has a clock. |
MMSSF_SUPPORTSEEK | The object supports seeking. |
This parameter can be NULL.
[out] pStreamType
Pointer to a variable that receives a member of the STREAM_TYPE enumeration. This value indicates whether the multimedia stream is read-only, write-only, or read/write. This parameter can be NULL.
Return value
Returns an HRESULT value. Possible values include the following.
Return code | Description |
---|---|
|
Unexpected error. |
|
Success. |
Requirements
Requirement | Value |
---|---|
Target Platform | Windows |
Header | mmstream.h |