IltmmMediaSampleDisp::get_ActualDataLength

#include "ltmm.h"

C Syntax	HRESULT IltmmMediaSampleDisp__get_ActualDataLength(pMediaSampleDisp, pVal)
C++ Syntax	HRESULT get_ActualDataLength(pVal)

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

Gets the length of the valid data in the buffer.

Parameter	Description
pMediaSampleDisp	Pointer to an IltmmMediaSampleDisp interface.
pVal	Pointer to a variable to be updated with the length of the valid data, in bytes.

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 value retrieved in the pVal parameter should be less than the length of the entire buffer. TO get the length of the entire buffer, use the IltmmMediaSampleDisp::get_BufferSize function.

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.

See Also

Functions:	IltmmMediaSampleDisp::get_Buffer, IltmmMediaSampleDisp::get_BufferSize, IltmmMediaSampleDisp::get_Discontinuity, IltmmMediaSampleDisp::get_Preroll, 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

For a C example, refer to Copying ltmmMediaSample attributes and data for C.

For a C++ example, refer to Copying ltmmMediaSample attributes and data for C++.