shmint.h revision f7df2e56 
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
54typedef 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
63typedef 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
83extern _X_EXPORT void
84 ShmRegisterFuncs(ScreenPtr pScreen, ShmFuncsPtr funcs);
85
86extern _X_EXPORT void
87 ShmRegisterFbFuncs(ScreenPtr pScreen);
88
89extern _X_EXPORT RESTYPE ShmSegType;
90extern _X_EXPORT int ShmCompletionCode;
91extern _X_EXPORT int BadShmSegCode;
92
93#endif                          /* _SHMINT_H_ */
94