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IltmmMediaInfo::get_SourceDuration

#include "ltmm.h"

C Syntax	HRESULT IltmmMediaInfo_get_SourceDuration(pMediaInfo, Duration)
C++ Syntax	HRESULT get_SourceDuration(Duration)

 

IltmmMediaInfo *pMediaInfo;	/* pointer to an interface */
double *Duration;	/* pointer to a variable */

Retrieves the duration of the longest stream in the current source media file, in seconds.

Parameter	Description
pMediaInfo	Pointer to an IltmmMediaInfo Interface.
Duration	Pointer to a variable to be updated with the duration of the longest stream in the current source media file. This value is measured in seconds.

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

The duration of the longest stream is based on normal playback speed. Changing the playback rate does not affect the duration.

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 interface, IltmmMediaInfo::get_SourceFile, IltmmMediaInfo::put_SourceFile, IltmmMediaInfo::get_SourceFilter, IltmmMediaInfo::get_SourceFilterClassID, IltmmMediaInfo::get_SourceFilterDispatch, IltmmMediaInfo::get_SourceMediaType, IltmmMediaInfo::get_SourceFormat, IltmmMediaInfo::get_SourceFormatName, IltmmMediaInfo::get_SourceFileSize, IltmmMediaInfo::get_SourceBitRate
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++.