1 /*
2  * Copyright © 2003 Keith Packard
3  *
4  * Permission to use, copy, modify, distribute, and sell this software and its
5  * documentation for any purpose is hereby granted without fee, provided that
6  * the above copyright notice appear in all copies and that both that
7  * copyright notice and this permission notice appear in supporting
8  * documentation, and that the name of Keith Packard not be used in
9  * advertising or publicity pertaining to distribution of the software without
10  * specific, written prior permission.  Keith Packard makes no
11  * representations about the suitability of this software for any purpose.  It
12  * is provided "as is" without express or implied warranty.
13  *
14  * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16  * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
20  * PERFORMANCE OF THIS SOFTWARE.
21  */
22 
23 #ifndef _SHMINT_H_
24 #define _SHMINT_H_
25 
26 #include <X11/extensions/shmproto.h>
27 
28 #include "screenint.h"
29 #include "pixmap.h"
30 #include "gc.h"
31 
32 #define XSHM_PUT_IMAGE_ARGS \
33     DrawablePtr		/* dst */, \
34     GCPtr		/* pGC */, \
35     int			/* depth */, \
36     unsigned int	/* format */, \
37     int			/* w */, \
38     int			/* h */, \
39     int			/* sx */, \
40     int			/* sy */, \
41     int			/* sw */, \
42     int			/* sh */, \
43     int			/* dx */, \
44     int			/* dy */, \
45     char *                      /* data */
46 
47 #define XSHM_CREATE_PIXMAP_ARGS \
48     ScreenPtr	/* pScreen */, \
49     int		/* width */, \
50     int		/* height */, \
51     int		/* depth */, \
52     char *                      /* addr */
53 
54 typedef struct _ShmFuncs {
55     PixmapPtr (*CreatePixmap) (XSHM_CREATE_PIXMAP_ARGS);
56     void (*PutImage) (XSHM_PUT_IMAGE_ARGS);
57 } ShmFuncs, *ShmFuncsPtr;
58 
59 #if XTRANS_SEND_FDS
60 #define SHM_FD_PASSING  1
61 #endif
62 
63 typedef struct _ShmDesc {
64     struct _ShmDesc *next;
65     int shmid;
66     int refcnt;
67     char *addr;
68     Bool writable;
69     unsigned long size;
70 #ifdef SHM_FD_PASSING
71     Bool is_fd;
72     struct busfault *busfault;
73     XID resource;
74 #endif
75 } ShmDescRec, *ShmDescPtr;
76 
77 #ifdef SHM_FD_PASSING
78 #define SHMDESC_IS_FD(shmdesc)  ((shmdesc)->is_fd)
79 #else
80 #define SHMDESC_IS_FD(shmdesc)  (0)
81 #endif
82 
83 extern _X_EXPORT void
84  ShmRegisterFuncs(ScreenPtr pScreen, ShmFuncsPtr funcs);
85 
86 extern _X_EXPORT void
87  ShmRegisterFbFuncs(ScreenPtr pScreen);
88 
89 extern _X_EXPORT RESTYPE ShmSegType;
90 extern _X_EXPORT int ShmCompletionCode;
91 extern _X_EXPORT int BadShmSegCode;
92 
93 #endif                          /* _SHMINT_H_ */
94