Introducing TopoEdit

When Media Foundation was introduced in Windows Vista, it did not have any graphical tool analogous to DirectShow’s GraphEdit. Now there is such a tool, named “TopoEdit.” (Topologies are the Media Foundation equivalent of filter graphs.)  You can see a pre-release version of TopoEdit in RC0 of Windows SDK for Windows Server 2008. To quote from the SDK help:  TopoEdit is a visual tool…


DirectShow Helper Functions

If you do anything more complicated in DirectShow than call RenderFile, you generally end up writing graph-walking code. (Find this pin on this filter, connect it to that pin on that filter.) The DirectShow samples in the Windows SDK include some helper functions for writing just this sort of fiddly code. For example, suppose you want to find the media type on…