the AVI splitter.
Fixed some returned error codes.
Show refcount in the AddRef/Release traces in filter.
Added 24 bits source in the video renderer.

thread apartment scoped.

Forward AVIBuildFilter, AVIFileCreateStream, AVIFileOpen, AVISave,
EditStreamSetInfo, EditStreamSetName to their respective *A variants.

GetDeviceState should be 0x80 (only the high bit set), not 0xff.

redundant.

handled bytes when no overlapped operation is done.

per-thread buffers.

coordinates.

Replaced the CallWin32ToNt macro by a proper function.
PBOOL cannot be cast to PBOOLEAN, we need to use an intermediate
variable.

malloc'ed memory.