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-rw-r--r--Xext/sampleEVI.c123
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diff --git a/Xext/sampleEVI.c b/Xext/sampleEVI.c
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1/************************************************************
2Copyright (c) 1997 by Silicon Graphics Computer Systems, Inc.
3Permission to use, copy, modify, and distribute this
4software and its documentation for any purpose and without
5fee is hereby granted, provided that the above copyright
6notice appear in all copies and that both that copyright
7notice and this permission notice appear in supporting
8documentation, and that the name of Silicon Graphics not be
9used in advertising or publicity pertaining to distribution
10of the software without specific prior written permission.
11Silicon Graphics makes no representation about the suitability
12of this software for any purpose. It is provided "as is"
13without any express or implied warranty.
14SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
15SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
16AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
17GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
18DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
19DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
20OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
21THE USE OR PERFORMANCE OF THIS SOFTWARE.
22********************************************************/
23
24#ifdef HAVE_DIX_CONFIG_H
25#include <dix-config.h>
26#endif
27
28#include <X11/X.h>
29#include <X11/Xproto.h>
30#include "dixstruct.h"
31#include "extnsionst.h"
32#include "dix.h"
33#define _XEVI_SERVER_
34#include <X11/extensions/XEVIstr.h>
35#include "EVIstruct.h"
36#include "scrnintstr.h"
37
38#if HAVE_STDINT_H
39#include <stdint.h>
40#elif !defined(UINT32_MAX)
41#define UINT32_MAX 0xffffffffU
42#endif
43
44static int sampleGetVisualInfo(
45 VisualID32 *visual,
46 int n_visual,
47 xExtendedVisualInfo **evi_rn,
48 int *n_info_rn,
49 VisualID32 **conflict_rn,
50 int *n_conflict_rn)
51{
52 unsigned int max_sz_evi;
53 VisualID32 *temp_conflict;
54 xExtendedVisualInfo *evi;
55 unsigned int max_visuals = 0, max_sz_conflict, sz_conflict = 0;
56 register int visualI, scrI, sz_evi = 0, conflictI, n_conflict;
57
58 if (n_visual > UINT32_MAX/(sz_xExtendedVisualInfo * screenInfo.numScreens))
59 return BadAlloc;
60 max_sz_evi = n_visual * sz_xExtendedVisualInfo * screenInfo.numScreens;
61
62 for (scrI = 0; scrI < screenInfo.numScreens; scrI++) {
63 if (screenInfo.screens[scrI]->numVisuals > max_visuals)
64 max_visuals = screenInfo.screens[scrI]->numVisuals;
65 }
66
67 if (n_visual > UINT32_MAX/(sz_VisualID32 * screenInfo.numScreens
68 * max_visuals))
69 return BadAlloc;
70 max_sz_conflict = n_visual * sz_VisualID32 * screenInfo.numScreens * max_visuals;
71
72 *evi_rn = evi = (xExtendedVisualInfo *)xalloc(max_sz_evi);
73 if (!*evi_rn)
74 return BadAlloc;
75
76 temp_conflict = (VisualID32 *)xalloc(max_sz_conflict);
77 if (!temp_conflict) {
78 xfree(*evi_rn);
79 return BadAlloc;
80 }
81
82 for (scrI = 0; scrI < screenInfo.numScreens; scrI++) {
83 for (visualI = 0; visualI < n_visual; visualI++) {
84 evi[sz_evi].core_visual_id = visual[visualI];
85 evi[sz_evi].screen = scrI;
86 evi[sz_evi].level = 0;
87 evi[sz_evi].transparency_type = XEVI_TRANSPARENCY_NONE;
88 evi[sz_evi].transparency_value = 0;
89 evi[sz_evi].min_hw_colormaps = 1;
90 evi[sz_evi].max_hw_colormaps = 1;
91 evi[sz_evi].num_colormap_conflicts = n_conflict = 0;
92 for (conflictI = 0; conflictI < n_conflict; conflictI++)
93 temp_conflict[sz_conflict++] = visual[visualI];
94 sz_evi++;
95 }
96 }
97 *conflict_rn = temp_conflict;
98 *n_conflict_rn = sz_conflict;
99 *n_info_rn = sz_evi;
100 return Success;
101}
102
103static void sampleFreeVisualInfo(
104 xExtendedVisualInfo *evi,
105 VisualID32 *conflict)
106{
107 if (evi)
108 xfree(evi);
109 if (conflict)
110 xfree(conflict);
111}
112
113EviPrivPtr eviDDXInit(void)
114{
115 static EviPrivRec eviPriv;
116 eviPriv.getVisualInfo = sampleGetVisualInfo;
117 eviPriv.freeVisualInfo = sampleFreeVisualInfo;
118 return &eviPriv;
119}
120
121void eviDDXReset(void)
122{
123}