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IFilterGraph::SetDefaultSyncSource (Compact 2013)

3/26/2014

This method sets the default source of synchronization.

Syntax

HRESULT SetDefaultSyncSource(void);

Parameters

None.

Return Value

Returns an HRESULT value that depends on the implementation. HRESULT can be one of the following standard constants, or other values not listed.

Value

Description

E_FAIL

Failure.

E_POINTER

Null pointer argument.

E_INVALIDARG

Invalid argument.

E_NOTIMPL

Method is not supported.

S_OK or NOERROR

Success.

Remarks

This method is used when no clock has been given to the filter graph, and the filter graph manager consequently must find a clock to use as the synchronization source. The filter graph manager first tries all filters, starting with renderers, to see if any filter exports a clock (by providing an IReferenceClock interface). The filter graph manager will choose the first filter that it finds, providing that filter is connected to an upstream source. If no connected filters are found, the first IReferenceClock filter is used. Typically, this will be the audio rendering filter. If no filter exports a clock, the filter graph manager uses a system clock.

Requirements

Header

dshow.h

Library

Strmiids.lib

See Also

Reference

IFilterGraph Interface