ddraw: Do not crash when Clipper is NULL.
[wine] / dlls / ddraw / gamma.c
1 /* DirectDrawGammaControl implementation
2  *
3  * Copyright 2001 TransGaming Technologies Inc.
4  * Copyright 2006 Stefan Dösinger
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19  */
20
21 #include "config.h"
22 #include "wine/port.h"
23 #include "wine/debug.h"
24
25 #include <assert.h>
26 #include <stdarg.h>
27 #include <string.h>
28 #include <stdlib.h>
29
30 #define COBJMACROS
31
32 #include "windef.h"
33 #include "winbase.h"
34 #include "winerror.h"
35 #include "wingdi.h"
36 #include "wine/exception.h"
37
38 #include "ddraw.h"
39 #include "d3d.h"
40
41 #include "ddraw_private.h"
42
43 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
44 WINE_DECLARE_DEBUG_CHANNEL(ddraw_thunk);
45
46 /**********************************************************
47  * IUnknown parts follow
48  **********************************************************/
49
50 /**********************************************************
51  * IDirectDrawGammaControl::QueryInterface
52  *
53  * QueryInterface, thunks to IDirectDrawSurface
54  *
55  * Params:
56  *  riid: Interface id queried for
57  *  obj: Returns the interface pointer
58  *
59  * Returns:
60  *  S_OK or E_NOINTERFACE: See IDirectDrawSurface7::QueryInterface
61  *
62  **********************************************************/
63 static HRESULT WINAPI
64 IDirectDrawGammaControlImpl_QueryInterface(IDirectDrawGammaControl *iface, REFIID riid,
65                                            void **obj)
66 {
67     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirectDrawGammaControl, iface);
68     TRACE_(ddraw_thunk)("(%p)->(%s,%p): Thunking to IDirectDrawSurface7\n", This, debugstr_guid(riid), obj);
69
70     return IDirectDrawSurface7_QueryInterface(ICOM_INTERFACE(This, IDirectDrawSurface7),
71                                               riid,
72                                               obj);
73 }
74
75 /**********************************************************
76  * IDirectDrawGammaControl::AddRef
77  *
78  * Addref, thunks to IDirectDrawSurface
79  *
80  * Returns:
81  *  The new refcount
82  *
83  **********************************************************/
84 static ULONG WINAPI
85 IDirectDrawGammaControlImpl_AddRef(IDirectDrawGammaControl *iface)
86 {
87     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirectDrawGammaControl, iface);
88     TRACE_(ddraw_thunk)("(%p)->() Thunking to IDirectDrawSurface7\n", This);
89
90     return IDirectDrawSurface7_AddRef(ICOM_INTERFACE(This, IDirectDrawSurface7));
91 }
92
93 /**********************************************************
94  * IDirectDrawGammaControl::Release
95  *
96  * Release, thunks to IDirectDrawSurface
97  *
98  * Returns:
99  *  The new refcount
100  *
101  **********************************************************/
102 static ULONG WINAPI
103 IDirectDrawGammaControlImpl_Release(IDirectDrawGammaControl *iface)
104 {
105     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirectDrawGammaControl, iface);
106     TRACE_(ddraw_thunk)("(%p)->() Thunking to IDirectDrawSurface7\n", This);
107
108     return IDirectDrawSurface7_Release(ICOM_INTERFACE(This, IDirectDrawSurface7));
109 }
110
111 /**********************************************************
112  * IDirectDrawGammaControl
113  **********************************************************/
114
115 /**********************************************************
116  * IDirectDrawGammaControl::GetGammaRamp
117  *
118  * Returns the current gamma ramp for a surface
119  *
120  * Params:
121  *  Flags: Ignored
122  *  GammaRamp: Address to write the ramp to
123  *
124  * Returns:
125  *  DD_OK on success
126  *  DDERR_INVALIDPARAMS if GammaRamp is NULL
127  *
128  **********************************************************/
129 static HRESULT WINAPI
130 IDirectDrawGammaControlImpl_GetGammaRamp(IDirectDrawGammaControl *iface,
131                                          DWORD Flags,
132                                          DDGAMMARAMP *GammaRamp)
133 {
134     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirectDrawGammaControl, iface);
135     TRACE("(%p)->(%08x,%p)\n", This,Flags,GammaRamp);
136
137     /* This looks sane */
138     if(!GammaRamp)
139     {
140         ERR("(%p) GammaRamp is NULL, returning DDERR_INVALIDPARAMS\n", This);
141         return DDERR_INVALIDPARAMS;
142     }
143
144     if(This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
145     {
146         /* Note: DDGAMMARAMP is compatible with WINED3DGAMMARAMP */
147         IWineD3DDevice_GetGammaRamp(This->ddraw->wineD3DDevice,
148                                     0 /* Swapchain */,
149                                     (WINED3DGAMMARAMP *) GammaRamp);
150     }
151     else
152     {
153         ERR("(%p) Unimplemented for non-primary surfaces\n", This);
154     }
155
156     return DD_OK;
157 }
158
159 /**********************************************************
160  * IDirectDrawGammaControl::SetGammaRamp
161  *
162  * Sets the red, green and blue gamma ramps for
163  *
164  * Params:
165  *  Flags: Can be DDSGR_CALIBRATE to request calibration
166  *  GammaRamp: Structure containing the new gamma ramp
167  *
168  * Returns:
169  *  DD_OK on success
170  *  DDERR_INVALIDPARAMS if GammaRamp is NULL
171  *
172  **********************************************************/
173 static HRESULT WINAPI
174 IDirectDrawGammaControlImpl_SetGammaRamp(IDirectDrawGammaControl *iface,
175                                          DWORD Flags,
176                                          DDGAMMARAMP *GammaRamp)
177 {
178     ICOM_THIS_FROM(IDirectDrawSurfaceImpl, IDirectDrawGammaControl, iface);
179     TRACE("(%p)->(%08x,%p)\n", This,Flags,GammaRamp);
180
181     /* This looks sane */
182     if(!GammaRamp)
183     {
184         ERR("(%p) GammaRamp is NULL, returning DDERR_INVALIDPARAMS\n", This);
185         return DDERR_INVALIDPARAMS;
186     }
187
188     if(This->surface_desc.ddsCaps.dwCaps & DDSCAPS_PRIMARYSURFACE)
189     {
190
191         /* Note: DDGAMMARAMP is compatible with WINED3DGAMMARAMP */
192         IWineD3DDevice_SetGammaRamp(This->ddraw->wineD3DDevice,
193                                     0 /* Swapchain */,
194                                     Flags,
195                                     (WINED3DGAMMARAMP *) GammaRamp);
196     }
197     else
198     {
199         ERR("(%p) Unimplemented for non-primary surfaces\n", This);
200     }
201
202     return DD_OK;
203 }
204
205 const IDirectDrawGammaControlVtbl IDirectDrawGammaControl_Vtbl =
206 {
207     IDirectDrawGammaControlImpl_QueryInterface,
208     IDirectDrawGammaControlImpl_AddRef,
209     IDirectDrawGammaControlImpl_Release,
210     IDirectDrawGammaControlImpl_GetGammaRamp,
211     IDirectDrawGammaControlImpl_SetGammaRamp
212 };