1/*
2 * Copyright © 2013 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 copyright
7 * notice and this permission notice appear in supporting documentation, and
8 * that the name of the copyright holders not be used in advertising or
9 * publicity pertaining to distribution of the software without specific,
10 * written prior permission.  The copyright holders make no representations
11 * about the suitability of this software for any purpose.  It is provided "as
12 * is" without express or implied warranty.
13 *
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS 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 PERFORMANCE
20 * OF THIS SOFTWARE.
21 */
22
23#ifdef HAVE_DIX_CONFIG_H
24#include <dix-config.h>
25#endif
26
27#include "scrnintstr.h"
28#include "misync.h"
29#include "misyncstr.h"
30#include "misyncfd.h"
31#include "pixmapstr.h"
32
33static DevPrivateKeyRec syncFdScreenPrivateKey;
34
35typedef struct _SyncFdScreenPrivate {
36    SyncFdScreenFuncsRec        funcs;
37} SyncFdScreenPrivateRec, *SyncFdScreenPrivatePtr;
38
39static inline SyncFdScreenPrivatePtr sync_fd_screen_priv(ScreenPtr pScreen)
40{
41    if (!dixPrivateKeyRegistered(&syncFdScreenPrivateKey))
42        return NULL;
43    return dixLookupPrivate(&pScreen->devPrivates, &syncFdScreenPrivateKey);
44}
45
46int
47miSyncInitFenceFromFD(DrawablePtr pDraw, SyncFence *pFence, int fd, BOOL initially_triggered)
48
49{
50    SyncFdScreenPrivatePtr      priv = sync_fd_screen_priv(pDraw->pScreen);
51
52    if (!priv)
53        return BadMatch;
54
55    return (*priv->funcs.CreateFenceFromFd)(pDraw->pScreen, pFence, fd, initially_triggered);
56}
57
58int
59miSyncFDFromFence(DrawablePtr pDraw, SyncFence *pFence)
60{
61    SyncFdScreenPrivatePtr      priv = sync_fd_screen_priv(pDraw->pScreen);
62
63    if (!priv)
64        return -1;
65
66    return (*priv->funcs.GetFenceFd)(pDraw->pScreen, pFence);
67}
68
69_X_EXPORT Bool miSyncFdScreenInit(ScreenPtr pScreen,
70                                  const SyncFdScreenFuncsRec *funcs)
71{
72    SyncFdScreenPrivatePtr     priv;
73
74    /* Check to see if we've already been initialized */
75    if (sync_fd_screen_priv(pScreen) != NULL)
76        return FALSE;
77
78    if (!miSyncSetup(pScreen))
79        return FALSE;
80
81    if (!dixPrivateKeyRegistered(&syncFdScreenPrivateKey)) {
82        if (!dixRegisterPrivateKey(&syncFdScreenPrivateKey, PRIVATE_SCREEN, 0))
83            return FALSE;
84    }
85
86    priv = calloc(1, sizeof (SyncFdScreenPrivateRec));
87    if (!priv)
88        return FALSE;
89
90    /* Will require version checks when there are multiple versions
91     * of the funcs structure
92     */
93
94    priv->funcs = *funcs;
95
96    dixSetPrivate(&pScreen->devPrivates, &syncFdScreenPrivateKey, priv);
97
98    return TRUE;
99}
100