IMFPMediaItem::GetDuration method (mfplay.h)

Artículo
10/13/2021
Tiempo de lectura: 2 minutos

Important Deprecated. This API may be removed from future releases of Windows. Applications should use the Media Session for playback.

Gets the duration of the media item.

Syntax

HRESULT GetDuration(
  [in]  REFGUID     guidPositionType,
  [out] PROPVARIANT *pvDurationValue
);

Parameters

[in] guidPositionType

Specifies the unit of time for the duration value. The following value is defined.

Value	Meaning
MFP_POSITIONTYPE_100NS	100-nanosecond units. The value returned in pvDurationValue is a LARGE_INTEGER. Variant type (vt): VT_I8 Variant member: hVal

Value

Meaning

MFP_POSITIONTYPE_100NS

100-nanosecond units.

The value returned in pvDurationValue is a LARGE_INTEGER.

Variant type (vt): VT_I8
Variant member: hVal

[out] pvDurationValue

Pointer to a PROPVARIANT that receives the duration.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

The method returns the total duration of the content, regardless of any values set through IMFPMediaItem::SetStartStopPosition.

Examples

#include <propvarutil.h>

HRESULT GetPlaybackDuration(IMFPMediaItem *pItem, ULONGLONG *phnsDuration)
{
    PROPVARIANT var;

    HRESULT hr = pItem->GetDuration(MFP_POSITIONTYPE_100NS, &var);

    if (SUCCEEDED(hr))
    {
        hr = PropVariantToUInt64(var, phnsDuration);
        PropVariantClear(&var);
    }

    return hr;
}

Requirements


Minimum supported client	Windows 7 [desktop apps only]
Minimum supported server	Windows Server 2008 R2 [desktop apps only]
Target Platform	Windows
Header	mfplay.h