1/*
2 *
3 * Copyright © 2000 Keith Packard
4 *
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the name of Keith Packard not be used in
10 * advertising or publicity pertaining to distribution of the software without
11 * specific, written prior permission.  Keith Packard makes no
12 * representations about the suitability of this software for any purpose.  It
13 * is provided "as is" without express or implied warranty.
14 *
15 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
17 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
19 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
20 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
21 * PERFORMANCE OF THIS SOFTWARE.
22 */
23
24#ifndef _SHADOW_H_
25#define _SHADOW_H_
26
27#include "scrnintstr.h"
28
29#include "picturestr.h"
30
31#include "damage.h"
32#include "damagestr.h"
33typedef struct _shadowBuf   *shadowBufPtr;
34
35typedef void (*ShadowUpdateProc) (ScreenPtr pScreen,
36				  shadowBufPtr pBuf);
37
38#define SHADOW_WINDOW_RELOCATE 1
39#define SHADOW_WINDOW_READ 2
40#define SHADOW_WINDOW_WRITE 4
41
42typedef void *(*ShadowWindowProc) (ScreenPtr	pScreen,
43				   CARD32	row,
44				   CARD32	offset,
45				   int		mode,
46				   CARD32	*size,
47				   void		*closure);
48
49/* BC hack: do not move the damage member.  see shadow.c for explanation. */
50typedef struct _shadowBuf {
51    DamagePtr           pDamage;
52    ShadowUpdateProc	update;
53    ShadowWindowProc	window;
54    RegionRec		damage;
55    PixmapPtr		pPixmap;
56    void		*closure;
57    int			randr;
58
59    /* screen wrappers */
60    GetImageProcPtr     GetImage;
61    CloseScreenProcPtr  CloseScreen;
62} shadowBufRec;
63
64/* Match defines from randr extension */
65#define SHADOW_ROTATE_0	    1
66#define SHADOW_ROTATE_90    2
67#define SHADOW_ROTATE_180   4
68#define SHADOW_ROTATE_270   8
69#define SHADOW_ROTATE_ALL   (SHADOW_ROTATE_0|SHADOW_ROTATE_90|\
70			     SHADOW_ROTATE_180|SHADOW_ROTATE_270)
71#define SHADOW_REFLECT_X    16
72#define SHADOW_REFLECT_Y    32
73#define SHADOW_REFLECT_ALL  (SHADOW_REFLECT_X|SHADOW_REFLECT_Y)
74
75extern _X_EXPORT DevPrivateKey shadowScrPrivateKey;
76
77#define shadowGetBuf(pScr) ((shadowBufPtr) \
78    dixLookupPrivate(&(pScr)->devPrivates, shadowScrPrivateKey))
79#define shadowBuf(pScr)            shadowBufPtr pBuf = shadowGetBuf(pScr)
80#define shadowDamage(pBuf)  DamageRegion(pBuf->pDamage)
81
82extern _X_EXPORT Bool
83shadowSetup (ScreenPtr pScreen);
84
85extern _X_EXPORT Bool
86shadowAdd (ScreenPtr	    pScreen,
87	   PixmapPtr	    pPixmap,
88	   ShadowUpdateProc update,
89	   ShadowWindowProc window,
90	   int		    randr,
91	   void		    *closure);
92
93extern _X_EXPORT void
94shadowRemove (ScreenPtr pScreen, PixmapPtr pPixmap);
95
96extern _X_EXPORT Bool
97shadowInit (ScreenPtr pScreen, ShadowUpdateProc update, ShadowWindowProc window);
98
99extern _X_EXPORT void *
100shadowAlloc (int width, int height, int bpp);
101
102extern _X_EXPORT void
103shadowUpdatePacked (ScreenPtr	    pScreen,
104		    shadowBufPtr    pBuf);
105
106extern _X_EXPORT void
107shadowUpdatePlanar4 (ScreenPtr	    pScreen,
108		     shadowBufPtr   pBuf);
109
110extern _X_EXPORT void
111shadowUpdatePlanar4x8 (ScreenPtr    pScreen,
112		       shadowBufPtr pBuf);
113
114extern _X_EXPORT void
115shadowUpdateRotatePacked (ScreenPtr    pScreen,
116			  shadowBufPtr pBuf);
117
118extern _X_EXPORT void
119shadowUpdateRotate8_90 (ScreenPtr    pScreen,
120			shadowBufPtr pBuf);
121
122extern _X_EXPORT void
123shadowUpdateRotate16_90 (ScreenPtr    pScreen,
124			 shadowBufPtr pBuf);
125
126extern _X_EXPORT void
127shadowUpdateRotate16_90YX (ScreenPtr    pScreen,
128			   shadowBufPtr pBuf);
129
130extern _X_EXPORT void
131shadowUpdateRotate32_90 (ScreenPtr    pScreen,
132			 shadowBufPtr pBuf);
133
134extern _X_EXPORT void
135shadowUpdateRotate8_180 (ScreenPtr    pScreen,
136			 shadowBufPtr pBuf);
137
138extern _X_EXPORT void
139shadowUpdateRotate16_180 (ScreenPtr    pScreen,
140			  shadowBufPtr pBuf);
141
142extern _X_EXPORT void
143shadowUpdateRotate32_180 (ScreenPtr    pScreen,
144			  shadowBufPtr pBuf);
145
146extern _X_EXPORT void
147shadowUpdateRotate8_270 (ScreenPtr    pScreen,
148			 shadowBufPtr pBuf);
149
150extern _X_EXPORT void
151shadowUpdateRotate16_270 (ScreenPtr    pScreen,
152			  shadowBufPtr pBuf);
153
154extern _X_EXPORT void
155shadowUpdateRotate16_270YX (ScreenPtr    pScreen,
156			    shadowBufPtr pBuf);
157
158extern _X_EXPORT void
159shadowUpdateRotate32_270 (ScreenPtr    pScreen,
160			  shadowBufPtr pBuf);
161
162extern _X_EXPORT void
163shadowUpdateRotate8 (ScreenPtr    pScreen,
164		     shadowBufPtr pBuf);
165
166extern _X_EXPORT void
167shadowUpdateRotate16 (ScreenPtr    pScreen,
168		      shadowBufPtr pBuf);
169
170extern _X_EXPORT void
171shadowUpdateRotate32 (ScreenPtr    pScreen,
172		      shadowBufPtr pBuf);
173
174typedef void (* shadowUpdateProc)(ScreenPtr, shadowBufPtr);
175
176extern _X_EXPORT shadowUpdateProc shadowUpdatePackedWeak(void);
177extern _X_EXPORT shadowUpdateProc shadowUpdatePlanar4Weak(void);
178extern _X_EXPORT shadowUpdateProc shadowUpdatePlanar4x8Weak(void);
179extern _X_EXPORT shadowUpdateProc shadowUpdateRotatePackedWeak(void);
180
181#endif /* _SHADOW_H_ */
182