CBaseInputPin.PassNotify method
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 PassNotify method passes a quality-control message to the appropriate object.
Syntax
HRESULT PassNotify(
Quality q
);
Parameters
-
q
-
Quality structure that contains the quality-control message.
Return value
Returns an HRESULT value. Possible values include those listed in the following table.
| Return code | Description |
|---|---|
|
Success. |
|
Could not find an object to accept the message. |
Remarks
Call this method if the filter does not handle quality-control messages. This method passes the message to one of the following objects, in order of preference:
- An external quality-control manager, if the IQualityControl::SetSink method was called.
- The upstream output pin.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|
See also
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