CDynamicOutputPin::m_dwNumOutstandingOutputPinUsers member
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
Number of streaming threads using this pin.
Syntax
DWORD m_dwNumOutstandingOutputPinUsers;
Remarks
The CDynamicOutputPin::StartUsingOutputPin method increments this variable, and the CDynamicOutputPin::StopUsingOutputPin method decrements it. When the value is greater than zero, some thread is using this pin to stream data or to change the connection type. The pin cannot be blocked while this is the case.
Before accessing this variable, hold the CDynamicOutputPin::m_BlockStateLock critical section.
Requirements
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