IAMCrossbar::get_IsRoutedTo method (strmif.h)

Article
02/22/2024

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The get_IsRoutedTo method retrieves the input pin that is currently routed to the specified output pin.

Syntax

HRESULT get_IsRoutedTo(
  [in]  long OutputPinIndex,
  [out] long *InputPinIndex
);

Parameters

[in] OutputPinIndex

Specifies the index of the output pin.

[out] InputPinIndex

Pointer to a variable that receives the index of the input pin, or -1 if no input pin is routed to this output pin.

Return value

Returns an HRESULT value. Possible values include the following.

Return code	Description
S_FALSE	No input pin is routed to this output pin.
S_OK	Success.
E_POINTER	NULL pointer argument.

Remarks

Output pins and input pins are both indexed from zero. To determine the number of output and input pins, call the IAMCrossbar::get_PinCounts method.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	strmif.h (include Dshow.h)
Library	Strmiids.lib