IStreamSample::GetSampleTimes (Compact 2013)

3/26/2014

This method retrieves the current sample's start and end times. If the sample is updating, this method returns the times after the update completes.

Syntax

HRESULT GetSampleTimes(
  STREAM_TIME* pStartTime,
  STREAM_TIME* pEndTime,
  STREAM_TIME* pCurrentTime
);

Parameters

• pStartTime
  [out] Pointer to a STREAM_TIME value that will contain the sample's start time.

• pEndTime
  [out] Pointer to a STREAM_TIME value that will contain the sample's end time.

• pCurrentTime
  [out] Pointer to a STREAM_TIME value that will contain the media stream's current media time.

Return Value

Returns S_OK if successful or E_POINTER if one of the parameters is invalid.

Remarks

For streams that have a clock, the start and end times will be relative to the stream's current time. If the stream does not have a clock, the times are media-relative and the current time will be zero.

The pCurrentTime parameter enables you to conveniently track the media stream's current time, so you do not have to call IMultiMediaStream::GetTime.

Unlike GetTime, however, this method returns S_OK if the stream does not have a clock; GetTime returns S_FALSE.

The value assigned to pCurrentTime is the same as the value produced by the following code fragment.

pSample->GetMediaStream(&pMediaStream);
pMediaStream->GetMultiMediaStream(&pMultiMediaStream);
pMediaStream->Release();
pMultiMediaStream->GetTime(&pCurrentTime);
pMultiMediaStream->Release();

Requirements

See Also

Reference

IStreamSample Interface