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IMFPresentationClock::SetTimeSource method

Sets the time source for the presentation clock. The time source is the object that drives the clock by providing the current time.

Syntax

C++


HRESULT SetTimeSource(
  [in] IMFPresentationTimeSource *pTimeSource
);

Parameters

pTimeSource [in]: Pointer to the IMFPresentationTimeSource interface of the time source.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The method succeeded.
MF_E_CLOCK_NOT_SIMPLE	The time source does not have a frequency of 10 MHz.
MF_E_NOT_INITIALIZED	The time source has not been initialized.

Remarks

The presentation clock cannot start until it has a time source.

The time source is automatically registered to receive state change notifications from the clock, through the time source's IMFClockStateSink interface, which all time sources must implement.

This time source have a frequency of 10 MHz. See IMFClock::GetClockCharacteristics. If not, the method returns MF_E_CLOCK_NOT_SIMPLE.

Requirements

Minimum supported client	Windows Vista [desktop apps \| Windows Store apps]
Minimum supported server	Windows Server 2008 [desktop apps \| Windows Store apps]
Header	Mfidl.h
Library	Mfuuid.lib