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IltmmMediaInfo::get_SourceFilterClassID

#include "ltmm.h"

C Syntax	HRESULT IltmmMediaInfo_get_SourceFilterClassID(pMediaInfo, ClassID)
C++ Syntax	HRESULT get_SourceFilterClassID(ClassID)

 

IltmmMediaInfo *pMediaInfo;	/* pointer to an interface */
BSTR *ClassID;	/* pointer to a string */

Retrieves the Class ID string of the source filter used to read and expose the contents of the current source media file.

Parameter	Description
pMediaInfo	Pointer to an IltmmMediaInfo Interface.
ClassID	Pointer to a string to be updated with the class ID string of the source filter.

Returns

S_OK	The function was successful.
<> S_OK	An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.

Comments

Call SysFreeString to free the memory allocated for the string when it is no longer needed.

To get the current source media file, call IltmmMediaInfo::get_SourceFile.

The current source media file, set using IltmmMediaInfo::put_SourceFile, is the file for which the IltmmMediaInfo interface/object gets information. This function must be called before calling any of the other IltmmMediaInfo functions used for retrieving information.

Call IltmmMediaInfo::ResetSource to release the source file when it is no longer needed.

Required DLLs and Libraries

LTMM For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64

See Also

Elements:	IltmmMediaInfo::get_SourceFilter, IltmmMediaInfo::get_SourceFile, IltmmMediaInfo interface, IltmmMediaInfo::put_SourceFile,  IltmmMediaInfo::get_SourceFilterDispatch, IltmmMediaInfo::get_SourceMediaType, IltmmMediaInfo::get_SourceFormat, IltmmMediaInfo::get_SourceFormatName, IltmmMediaInfo::get_SourceFileSize, IltmmMediaInfo::get_SourceBitRate, IltmmMediaInfo::get_SourceDuration
Topics:	Multimedia Function Group Media File Information

Example

For a C example, refer to Retrieving Media File Information for C.

For a C++ example, refer to Retrieving Media File Information for C++.