KSINTERFACE_STANDARD_LOOPED_STREAMING
The KSINTERFACE_STANDARD_LOOPED_STREAMING interface is used by clients of DSound. At release time of Windows XP, Kmixer and Portcls are the only KS Audio filters that support this interface.
If a pin supports KSINTERFACE_STANDARD_LOOPED_STREAMING, the relevant filter does not complete buffers until the pin is placed into the Stop state. The filter processes data by continuously looping around the data in the single buffer submitted to the filter.