Fix for stupid applications reading some bytes after the end of the
[wine] / dlls / ddraw / dsurface / gamma.c
1 /*              DirectDrawGammaControl implementation
2  *
3  * Copyright 2001 TransGaming Technologies Inc.
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18  */
19
20 #include "config.h"
21 #include "winerror.h"
22
23 #include <assert.h>
24 #include <stdlib.h>
25
26 #include "wine/debug.h"
27 #include "ddraw_private.h"
28 #include "dsurface/main.h"
29
30 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
31
32 #define CONVERT(pddgc) COM_INTERFACE_CAST(IDirectDrawSurfaceImpl,       \
33                                           IDirectDrawGammaControl,      \
34                                           IDirectDrawSurface7,          \
35                                           (pddgc))
36
37 static HRESULT WINAPI
38 DirectDrawGammaControl_QueryInterface(LPDIRECTDRAWGAMMACONTROL iface, REFIID riid,
39                                       LPVOID *ppObj)
40 {
41     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppObj);
42     return E_NOINTERFACE;
43 }
44
45 static ULONG WINAPI
46 DirectDrawGammaControl_AddRef(LPDIRECTDRAWGAMMACONTROL iface)
47 {
48     return IDirectDrawSurface7_AddRef(CONVERT(iface));
49 }
50
51 static ULONG WINAPI
52 DirectDrawGammaControl_Release(LPDIRECTDRAWGAMMACONTROL iface)
53 {
54     return IDirectDrawSurface7_Release(CONVERT(iface));
55 }
56
57 static HRESULT WINAPI
58 DirectDrawGammaControl_GetGammaRamp(LPDIRECTDRAWGAMMACONTROL iface, DWORD dwFlags, LPDDGAMMARAMP lpGammaRamp)
59 {
60     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirectDrawGammaControl, iface);
61     TRACE("(%p)->(%08lx,%p)\n", iface,dwFlags,lpGammaRamp);
62     return This->get_gamma_ramp(This, dwFlags, lpGammaRamp);
63 }
64
65 static HRESULT WINAPI
66 DirectDrawGammaControl_SetGammaRamp(LPDIRECTDRAWGAMMACONTROL iface, DWORD dwFlags, LPDDGAMMARAMP lpGammaRamp)
67 {
68     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirectDrawGammaControl, iface);
69     TRACE("(%p)->(%08lx,%p)\n", iface,dwFlags,lpGammaRamp);
70     return This->set_gamma_ramp(This, dwFlags, lpGammaRamp);
71 }
72
73 ICOM_VTABLE(IDirectDrawGammaControl) DDRAW_IDDGC_VTable =
74 {
75     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
76     DirectDrawGammaControl_QueryInterface,
77     DirectDrawGammaControl_AddRef,
78     DirectDrawGammaControl_Release,
79     DirectDrawGammaControl_GetGammaRamp,
80     DirectDrawGammaControl_SetGammaRamp
81 };