ID3D11VideoContext::VideoProcessorGetStreamSourceRect

DX11 vtable[43] → void

ID3D11VideoContext::VideoProcessorGetStreamSourceRect is a method of the COM interface ID3D11VideoContext in Direct3D 11. Its function pointer sits at vtable index 43 — the zero-based slot in that interface's virtual method table, counted from QueryInterface and including every entry inherited from a base interface. It takes 4 parameters (processor, stream_idx, enabled, rect) and returns void.

COM methods are reached through that table rather than by an exported name, so the slot index is what a wrapper, an interface hook or a disassembly listing has to resolve against. The parameter order and types below are the ones this interface declares.