thunks.c

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/* Direct Draw Thunks and old vtables
 * Copyright 2000 TransGaming Technologies Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <stdarg.h>

#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "ddraw.h"
#include "ddraw_private.h"
#include "ddcomimpl.h"

static HRESULT WINAPI
IDirectDrawImpl_QueryInterface(LPDIRECTDRAW This, REFIID iid, LPVOID *ppObj)
{
    return IDirectDraw7_QueryInterface(COM_INTERFACE_CAST(IDirectDrawImpl,
							  IDirectDraw,
							  IDirectDraw7, This),
				       iid, ppObj);
}

static HRESULT WINAPI
IDirectDraw2Impl_QueryInterface(LPDIRECTDRAW2 This, REFIID iid, LPVOID *ppObj)
{
    return IDirectDraw7_QueryInterface(COM_INTERFACE_CAST(IDirectDrawImpl,
							  IDirectDraw2,
							  IDirectDraw7, This),
				       iid, ppObj);
}


static HRESULT WINAPI
IDirectDraw4Impl_QueryInterface(LPDIRECTDRAW4 This, REFIID iid, LPVOID *ppObj)
{
    return IDirectDraw7_QueryInterface(COM_INTERFACE_CAST(IDirectDrawImpl,
							  IDirectDraw4,
							  IDirectDraw7, This),
				       iid, ppObj);
}

static ULONG WINAPI
IDirectDrawImpl_AddRef(LPDIRECTDRAW This)
{
    return IDirectDraw7_AddRef(COM_INTERFACE_CAST(IDirectDrawImpl,
						  IDirectDraw, IDirectDraw7,
						  This));
}

static ULONG WINAPI
IDirectDraw2Impl_AddRef(LPDIRECTDRAW2 This)
{
    return IDirectDraw7_AddRef(COM_INTERFACE_CAST(IDirectDrawImpl,
						  IDirectDraw2, IDirectDraw7,
						  This));
}

static ULONG WINAPI
IDirectDraw4Impl_AddRef(LPDIRECTDRAW4 This)
{
    return IDirectDraw7_AddRef(COM_INTERFACE_CAST(IDirectDrawImpl,
						  IDirectDraw4, IDirectDraw7,
						  This));
}

static ULONG WINAPI
IDirectDrawImpl_Release(LPDIRECTDRAW This)
{
    return IDirectDraw7_Release(COM_INTERFACE_CAST(IDirectDrawImpl,
						   IDirectDraw, IDirectDraw7,
						   This));
}

static ULONG WINAPI
IDirectDraw2Impl_Release(LPDIRECTDRAW2 This)
{
    return IDirectDraw7_Release(COM_INTERFACE_CAST(IDirectDrawImpl,
						   IDirectDraw2, IDirectDraw7,
						   This));
}

static ULONG WINAPI
IDirectDraw4Impl_Release(LPDIRECTDRAW4 This)
{
    return IDirectDraw7_Release(COM_INTERFACE_CAST(IDirectDrawImpl,
						   IDirectDraw4, IDirectDraw7,
						   This));
}

static HRESULT WINAPI
IDirectDrawImpl_Compact(LPDIRECTDRAW This)
{
    return IDirectDraw7_Compact(COM_INTERFACE_CAST(IDirectDrawImpl,
						   IDirectDraw, IDirectDraw7,
						   This));
}

static HRESULT WINAPI
IDirectDraw2Impl_Compact(LPDIRECTDRAW2 This)
{
    return IDirectDraw7_Compact(COM_INTERFACE_CAST(IDirectDrawImpl,
						   IDirectDraw2, IDirectDraw7,
						   This));
}

static HRESULT WINAPI
IDirectDraw4Impl_Compact(LPDIRECTDRAW4 This)
{
    return IDirectDraw7_Compact(COM_INTERFACE_CAST(IDirectDrawImpl,
						   IDirectDraw4, IDirectDraw7,
						   This));
}

static HRESULT WINAPI
IDirectDrawImpl_CreateClipper(LPDIRECTDRAW This, DWORD dwFlags,
			      LPDIRECTDRAWCLIPPER *ppClipper,
			      IUnknown *pUnkOuter)
{
    return IDirectDraw7_CreateClipper(COM_INTERFACE_CAST(IDirectDrawImpl,
							 IDirectDraw,
							 IDirectDraw7,
							 This),
				      dwFlags, ppClipper, pUnkOuter);
}

static HRESULT WINAPI
IDirectDraw2Impl_CreateClipper(LPDIRECTDRAW2 This, DWORD dwFlags,
			       LPDIRECTDRAWCLIPPER *ppClipper,
			       IUnknown *pUnkOuter)
{
    return IDirectDraw7_CreateClipper(COM_INTERFACE_CAST(IDirectDrawImpl,
							 IDirectDraw2,
							 IDirectDraw7,
							 This),
				      dwFlags, ppClipper, pUnkOuter);
}

static HRESULT WINAPI
IDirectDraw4Impl_CreateClipper(LPDIRECTDRAW4 This, DWORD dwFlags,
			       LPDIRECTDRAWCLIPPER *ppClipper,
			       IUnknown *pUnkOuter)
{
    return IDirectDraw7_CreateClipper(COM_INTERFACE_CAST(IDirectDrawImpl,
							 IDirectDraw4,
							 IDirectDraw7,
							 This),
				      dwFlags, ppClipper, pUnkOuter);
}

static HRESULT WINAPI
IDirectDrawImpl_CreatePalette(LPDIRECTDRAW This, DWORD dwFlags,
			      LPPALETTEENTRY pEntries,
			      LPDIRECTDRAWPALETTE *ppPalette,
			      IUnknown *pUnkOuter)
{
    return IDirectDraw7_CreatePalette(COM_INTERFACE_CAST(IDirectDrawImpl,
							 IDirectDraw,
							 IDirectDraw7,
							 This),
				      dwFlags, pEntries, ppPalette, pUnkOuter);
}

static HRESULT WINAPI
IDirectDraw2Impl_CreatePalette(LPDIRECTDRAW2 This, DWORD dwFlags,
			       LPPALETTEENTRY pEntries,
			       LPDIRECTDRAWPALETTE *ppPalette,
			       IUnknown *pUnkOuter)
{
    return IDirectDraw7_CreatePalette(COM_INTERFACE_CAST(IDirectDrawImpl,
							 IDirectDraw2,
							 IDirectDraw7,
							 This),
				      dwFlags, pEntries, ppPalette, pUnkOuter);
}

static HRESULT WINAPI
IDirectDraw4Impl_CreatePalette(LPDIRECTDRAW4 This, DWORD dwFlags,
			       LPPALETTEENTRY pEntries,
			       LPDIRECTDRAWPALETTE *ppPalette,
			       IUnknown *pUnkOuter)
{
    return IDirectDraw7_CreatePalette(COM_INTERFACE_CAST(IDirectDrawImpl,
							 IDirectDraw4,
							 IDirectDraw7,
							 This),
				      dwFlags, pEntries, ppPalette, pUnkOuter);
}

static HRESULT WINAPI
IDirectDrawImpl_CreateSurface(LPDIRECTDRAW This, LPDDSURFACEDESC pSDesc,
			      LPDIRECTDRAWSURFACE *ppSurface,
			      IUnknown *pUnkOuter)
{
    LPDIRECTDRAWSURFACE7 pSurface7;
    HRESULT hr;

    /* the LPDDSURFACEDESC -> LPDDSURFACEDESC2 conversion should be ok,
     * since the data layout is the same */
    hr = IDirectDraw7_CreateSurface(COM_INTERFACE_CAST(IDirectDrawImpl,
						       IDirectDraw,
						       IDirectDraw7,
						       This),
				    (LPDDSURFACEDESC2)pSDesc, &pSurface7, pUnkOuter);

    /* This coercion is safe, since the IDirectDrawSurface3 vtable has the
     * IDirectDrawSurface vtable layout at the beginning  */
    *ppSurface = (LPDIRECTDRAWSURFACE) COM_INTERFACE_CAST(IDirectDrawSurfaceImpl,
				    IDirectDrawSurface7, IDirectDrawSurface3,
				    pSurface7);

    return hr;
}

static HRESULT WINAPI
IDirectDraw2Impl_CreateSurface(LPDIRECTDRAW2 This, LPDDSURFACEDESC pSDesc,
			       LPDIRECTDRAWSURFACE *ppSurface,
			       IUnknown *pUnkOuter)
{
    LPDIRECTDRAWSURFACE7 pSurface7;
    HRESULT hr;

    hr = IDirectDraw7_CreateSurface(COM_INTERFACE_CAST(IDirectDrawImpl,
						       IDirectDraw2,
						       IDirectDraw7,
						       This),
				    (LPDDSURFACEDESC2)pSDesc, &pSurface7, pUnkOuter);

    /* This coercion is safe, since the IDirectDrawSurface3 vtable has the
     * IDirectDrawSurface vtable layout at the beginning  */
    *ppSurface = (LPDIRECTDRAWSURFACE)COM_INTERFACE_CAST(IDirectDrawSurfaceImpl,
				    IDirectDrawSurface7, IDirectDrawSurface3,
				    pSurface7);

    return hr;
}

static HRESULT WINAPI
IDirectDraw4Impl_CreateSurface(LPDIRECTDRAW4 This, LPDDSURFACEDESC2 pSDesc,
			       LPDIRECTDRAWSURFACE4 *ppSurface,
			       IUnknown *pUnkOuter)
{
    return IDirectDraw7_CreateSurface(COM_INTERFACE_CAST(IDirectDrawImpl,
							 IDirectDraw4,
							 IDirectDraw7,
							 This),
				      pSDesc,
				      (LPDIRECTDRAWSURFACE7 *)ppSurface,
				      pUnkOuter);
}

static HRESULT WINAPI
IDirectDrawImpl_DuplicateSurface(LPDIRECTDRAW This, LPDIRECTDRAWSURFACE pSrc,
				 LPDIRECTDRAWSURFACE *ppDst)
{
    LPDIRECTDRAWSURFACE7 pDst7;
    HRESULT hr;

    hr = IDirectDraw7_DuplicateSurface(COM_INTERFACE_CAST(IDirectDrawImpl,
							  IDirectDraw,
							  IDirectDraw7, This),
				       COM_INTERFACE_CAST(IDirectDrawSurfaceImpl,
							  IDirectDrawSurface3,
							  IDirectDrawSurface7,
							  pSrc),
				       &pDst7);

    /* This coercion is safe, since the IDirectDrawSurface3 vtable has the
     * IDirectDrawSurface vtable layout at the beginning  */
    *ppDst = (LPDIRECTDRAWSURFACE)COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirectDrawSurface7,
				IDirectDrawSurface3, pDst7);

    return hr;
}

static HRESULT WINAPI
IDirectDraw2Impl_DuplicateSurface(LPDIRECTDRAW2 This, LPDIRECTDRAWSURFACE pSrc,
				  LPDIRECTDRAWSURFACE *ppDst)
{
    LPDIRECTDRAWSURFACE7 pDst7;
    HRESULT hr;

    hr = IDirectDraw7_DuplicateSurface(COM_INTERFACE_CAST(IDirectDrawImpl,
							  IDirectDraw2,
							  IDirectDraw7, This),
				       COM_INTERFACE_CAST(IDirectDrawSurfaceImpl,
							  IDirectDrawSurface3,
							  IDirectDrawSurface7,
							  pSrc),
				       &pDst7);

    /* This coercion is safe, since the IDirectDrawSurface3 vtable has the
     * IDirectDrawSurface vtable layout at the beginning  */
    *ppDst = (LPDIRECTDRAWSURFACE)COM_INTERFACE_CAST(IDirectDrawSurfaceImpl, IDirectDrawSurface7,
				IDirectDrawSurface3, pDst7);

    return hr;
}

static HRESULT WINAPI
IDirectDraw4Impl_DuplicateSurface(LPDIRECTDRAW4 This,
				  LPDIRECTDRAWSURFACE4 pSrc,
				  LPDIRECTDRAWSURFACE4 *ppDst)
{
    return IDirectDraw7_DuplicateSurface(COM_INTERFACE_CAST(IDirectDrawImpl,
							    IDirectDraw4,
							    IDirectDraw7,
							    This),
					 (LPDIRECTDRAWSURFACE7)pSrc,
					 (LPDIRECTDRAWSURFACE7 *)ppDst);
}

struct displaymodescallback_context
{
    LPDDENUMMODESCALLBACK func;
    LPVOID context;
};

static HRESULT CALLBACK
EnumDisplayModesCallbackThunk(LPDDSURFACEDESC2 pDDSD2, LPVOID context)
{
    DDSURFACEDESC DDSD;
    struct displaymodescallback_context *cbcontext = context;

    memcpy(&DDSD,pDDSD2,sizeof(DDSD));
    DDSD.dwSize = sizeof(DDSD);

    return cbcontext->func(&DDSD, cbcontext->context);
}

static HRESULT WINAPI
IDirectDrawImpl_EnumDisplayModes(LPDIRECTDRAW This, DWORD dwFlags,
				 LPDDSURFACEDESC pDDSD, LPVOID context,
				 LPDDENUMMODESCALLBACK cb)
{
    struct displaymodescallback_context cbcontext;

    cbcontext.func    = cb;
    cbcontext.context = context;

    return IDirectDraw7_EnumDisplayModes(COM_INTERFACE_CAST(IDirectDrawImpl,
							    IDirectDraw,
							    IDirectDraw7,
							    This),
					 dwFlags, (LPDDSURFACEDESC2)pDDSD, &cbcontext,
					 EnumDisplayModesCallbackThunk);
}

static HRESULT WINAPI
IDirectDraw2Impl_EnumDisplayModes(LPDIRECTDRAW2 This, DWORD dwFlags,
				  LPDDSURFACEDESC pDDSD, LPVOID context,
				  LPDDENUMMODESCALLBACK cb)
{
    struct displaymodescallback_context cbcontext;

    cbcontext.func    = cb;
    cbcontext.context = context;

    return IDirectDraw7_EnumDisplayModes(COM_INTERFACE_CAST(IDirectDrawImpl,
							    IDirectDraw2,
							    IDirectDraw7,
							    This),
					 dwFlags, (LPDDSURFACEDESC2)pDDSD, &cbcontext,
					 EnumDisplayModesCallbackThunk);
}

static HRESULT WINAPI
IDirectDraw4Impl_EnumDisplayModes(LPDIRECTDRAW4 This, DWORD dwFlags,
				  LPDDSURFACEDESC2 pDDSD, LPVOID context,
				  LPDDENUMMODESCALLBACK2 cb)
{
    return IDirectDraw7_EnumDisplayModes(COM_INTERFACE_CAST(IDirectDrawImpl,
							    IDirectDraw4,
							    IDirectDraw7,
							    This),
					 dwFlags, pDDSD, context, cb);
}

struct surfacescallback_context
{
    LPDDENUMSURFACESCALLBACK func;
    LPVOID context;
};

static HRESULT CALLBACK
EnumSurfacesCallbackThunk(LPDIRECTDRAWSURFACE7 pSurf, LPDDSURFACEDESC2 pDDSD,
			  LPVOID context)
{
    struct surfacescallback_context *cbcontext = context;

    /* This coercion is safe, since the IDirectDrawSurface3 vtable has the
     * IDirectDrawSurface vtable layout at the beginning  */
    return cbcontext->func((LPDIRECTDRAWSURFACE)
                           COM_INTERFACE_CAST(IDirectDrawSurfaceImpl,
					      IDirectDrawSurface7,
					      IDirectDrawSurface3, pSurf),
			   (LPDDSURFACEDESC)pDDSD, cbcontext->context);
}

static HRESULT WINAPI
IDirectDrawImpl_EnumSurfaces(LPDIRECTDRAW This, DWORD dwFlags,
			     LPDDSURFACEDESC pDDSD, LPVOID context,
			     LPDDENUMSURFACESCALLBACK cb)
{
    struct surfacescallback_context cbcontext;

    cbcontext.func    = cb;
    cbcontext.context = context;

    return IDirectDraw7_EnumSurfaces(COM_INTERFACE_CAST(IDirectDrawImpl,
							IDirectDraw,
							IDirectDraw7, This),
				     dwFlags, (LPDDSURFACEDESC2)pDDSD,
				     &cbcontext, EnumSurfacesCallbackThunk);
}

static HRESULT WINAPI
IDirectDraw2Impl_EnumSurfaces(LPDIRECTDRAW2 This, DWORD dwFlags,
			      LPDDSURFACEDESC pDDSD, LPVOID context,
			      LPDDENUMSURFACESCALLBACK cb)
{
    struct surfacescallback_context cbcontext;

    cbcontext.func    = cb;
    cbcontext.context = context;

    return IDirectDraw7_EnumSurfaces(COM_INTERFACE_CAST(IDirectDrawImpl,
							IDirectDraw2,
							IDirectDraw7, This),
				     dwFlags, (LPDDSURFACEDESC2)pDDSD,
				     &cbcontext, EnumSurfacesCallbackThunk);
}

static HRESULT WINAPI
IDirectDraw4Impl_EnumSurfaces(LPDIRECTDRAW4 This, DWORD dwFlags,
			      LPDDSURFACEDESC2 pDDSD, LPVOID context,
			      LPDDENUMSURFACESCALLBACK2 cb)
{
    return IDirectDraw7_EnumSurfaces(COM_INTERFACE_CAST(IDirectDrawImpl,
							IDirectDraw4,
							IDirectDraw7, This),
				     dwFlags, pDDSD, context,
				     (LPDDENUMSURFACESCALLBACK7)cb);
}

static HRESULT WINAPI
IDirectDrawImpl_FlipToGDISurface(LPDIRECTDRAW This)
{
    return IDirectDraw7_FlipToGDISurface(COM_INTERFACE_CAST(IDirectDrawImpl,
							    IDirectDraw,
							    IDirectDraw7,
							    This));
}

static HRESULT WINAPI
IDirectDraw2Impl_FlipToGDISurface(LPDIRECTDRAW2 This)
{
    return IDirectDraw7_FlipToGDISurface(COM_INTERFACE_CAST(IDirectDrawImpl,
							    IDirectDraw2,
							    IDirectDraw7,
							    This));
}

static HRESULT WINAPI
IDirectDraw4Impl_FlipToGDISurface(LPDIRECTDRAW4 This)
{
    return IDirectDraw7_FlipToGDISurface(COM_INTERFACE_CAST(IDirectDrawImpl,
							    IDirectDraw4,
							    IDirectDraw7,
							    This));
}

static HRESULT WINAPI
IDirectDrawImpl_GetCaps(LPDIRECTDRAW This, LPDDCAPS pDDC1, LPDDCAPS pDDC2)
{
    return IDirectDraw7_GetCaps(COM_INTERFACE_CAST(IDirectDrawImpl,
						   IDirectDraw, IDirectDraw7,
						   This), pDDC1, pDDC2);
}

static HRESULT WINAPI
IDirectDraw2Impl_GetCaps(LPDIRECTDRAW2 This, LPDDCAPS pDDC1, LPDDCAPS pDDC2)
{
    return IDirectDraw7_GetCaps(COM_INTERFACE_CAST(IDirectDrawImpl,
						   IDirectDraw2, IDirectDraw7,
						   This), pDDC1, pDDC2);
}

static HRESULT WINAPI
IDirectDraw4Impl_GetCaps(LPDIRECTDRAW4 This, LPDDCAPS pDDC1, LPDDCAPS pDDC2)
{
    return IDirectDraw7_GetCaps(COM_INTERFACE_CAST(IDirectDrawImpl,
						   IDirectDraw4, IDirectDraw7,
						   This), pDDC1, pDDC2);
}

static HRESULT WINAPI
IDirectDrawImpl_GetDisplayMode(LPDIRECTDRAW This, LPDDSURFACEDESC pDDSD)
{
    return IDirectDraw7_GetDisplayMode(COM_INTERFACE_CAST(IDirectDrawImpl,
							  IDirectDraw,
							  IDirectDraw7, This),
				       (LPDDSURFACEDESC2)pDDSD);
}