[ros-diffs] [janderwald] 46396: [KSPROXY] - Check in IMemAllocator::GetBuffer if the allocator is commited - Silence debug prints in IMediaSample - Implement IBaseFilter::Stop - Fix race conditions in IBaseFilter::Run, IBaseFilter::Run, IBaseFilter::Stop - Check for invalid argument in IBaseFilter::Stop - Call InitializeIOThread when pin state is set to acquired - Grab current filter handle by obtaining IKsObject interface of the parent filter. Required as the filter handle might be closed by using IAMDevic