Loaded and returned audio banks. Let's see if this actually works, though...

src/decomp/pc/gfx/gfx_dxgi.h

@@ -0,0 +1,16 @@
+#ifndef GFX_DXGI_H
+#define GFX_DXGI_H
+
+#include "gfx_rendering_api.h"
+
+#ifdef DECLARE_GFX_DXGI_FUNCTIONS
+void gfx_dxgi_create_factory_and_device(bool debug, int d3d_version, bool (*create_device_fn)(IDXGIAdapter1 *adapter, bool test_only));
+Microsoft::WRL::ComPtr<IDXGISwapChain1> gfx_dxgi_create_swap_chain(IUnknown *device);
+HWND gfx_dxgi_get_h_wnd(void);
+void ThrowIfFailed(HRESULT res);
+void ThrowIfFailed(HRESULT res, HWND h_wnd, const char *message);
+#endif
+
+extern struct GfxWindowManagerAPI gfx_dxgi_api;
+
+#endif