IMFPresentationClock::SetTimeSource method (mfidl.h)

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

Syntax

HRESULT SetTimeSource(
  [in] IMFPresentationTimeSource *pTimeSource
);

Parameters

[in] pTimeSource

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

Requirement Value
Minimum supported client Windows Vista [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 [desktop apps | UWP apps]
Target Platform Windows
Header mfidl.h
Library Mfuuid.lib

See also

IMFPresentationClock

Presentation Clock