IltmmMediaSampleDisp::get_Preroll

#include "ltmm.h"

C Syntax	HRESULT IltmmMediaSampleDisp_get_Preroll(pMediaSampleDisp, pVal)
C++ Syntax	HRESULT get_Preroll(pVal)

IltmmMediaSampleDisp *pMediaSampleDisp;	/* pointer to an interface */
VARIANT_BOOL *pVal;	/* pointer to a variable */

Determines if this sample is a preroll sample. A preroll sample should not be displayed.

Parameter	Description
pMediaSampleDisp	Pointer to an IltmmMediaSampleDisp interface.
pVal	Pointer to a variable to be updated with a value that indicates whether the sample is a preroll sample. Possible values are:
	Value	Meaning
	VARIANT_TRUE	The sample is a preroll sample.
	VARIANT_FALSE	The sample is not a preroll sample.

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

Preroll samples are processed but not displayed. They are located in the media stream before the displayable samples.

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.

Win32, x64

See Also

Functions:	IltmmMediaSampleDisp::get_ActualDataLength, IltmmMediaSampleDisp::get_Buffer, IltmmMediaSampleDisp::get_BufferSize, IltmmMediaSampleDisp::get_Discontinuity, IltmmMediaSampleDisp::get_SyncPoint, IltmmMediaSampleDisp::GetData, IltmmMediaSampleDisp::GetMediaTime, IltmmMediaSampleDisp::GetMediaType, IltmmMediaSampleDisp::GetTime, IltmmMediaSampleDisp::put_ActualDataLength, IltmmMediaSampleDisp::put_Discontinuity, IltmmMediaSampleDisp::put_Preroll, IltmmMediaSampleDisp::put_SyncPoint, IltmmMediaSampleDisp::ResetMediaTime, IltmmMediaSampleDisp::ResetTime, IltmmMediaSampleDisp::SetData, IltmmMediaSampleDisp::SetMediaTime, IltmmMediaSampleDisp::SetMediaType, IltmmMediaSampleDisp::SetTime
Topics:	Multimedia Function Group
	IltmmMediaSampleDisp interface
	ltmmMediaSample object

Example