dri3_screen.c revision 35c4bbdf 
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_XORG_CONFIG_H
24#include <xorg-config.h>
25#endif
26
27#include "dri3_priv.h"
28#include <syncsdk.h>
29#include <misync.h>
30#include <misyncshm.h>
31#include <randrstr.h>
32
33static inline Bool has_open(dri3_screen_info_ptr info) {
34    if (info == NULL)
35        return FALSE;
36
37    return info->open != NULL ||
38        (info->version >= 1 && info->open_client != NULL);
39}
40
41int
42dri3_open(ClientPtr client, ScreenPtr screen, RRProviderPtr provider, int *fd)
43{
44    dri3_screen_priv_ptr        ds = dri3_screen_priv(screen);
45    dri3_screen_info_ptr        info = ds->info;
46    int                         rc;
47
48    if (!has_open(info))
49        return BadMatch;
50
51    if (info->version >= 1 && info->open_client != NULL)
52        rc = (*info->open_client) (client, screen, provider, fd);
53    else
54        rc = (*info->open) (screen, provider, fd);
55
56    if (rc != Success)
57        return rc;
58
59    return Success;
60}
61
62int
63dri3_pixmap_from_fd(PixmapPtr *ppixmap, ScreenPtr screen, int fd,
64                    CARD16 width, CARD16 height, CARD16 stride, CARD8 depth, CARD8 bpp)
65{
66    dri3_screen_priv_ptr        ds = dri3_screen_priv(screen);
67    dri3_screen_info_ptr        info = ds->info;
68    PixmapPtr                   pixmap;
69
70    if (!info || !info->pixmap_from_fd)
71        return BadImplementation;
72
73    pixmap = (*info->pixmap_from_fd) (screen, fd, width, height, stride, depth, bpp);
74    if (!pixmap)
75        return BadAlloc;
76
77    *ppixmap = pixmap;
78    return Success;
79}
80
81int
82dri3_fd_from_pixmap(int *pfd, PixmapPtr pixmap, CARD16 *stride, CARD32 *size)
83{
84    ScreenPtr                   screen = pixmap->drawable.pScreen;
85    dri3_screen_priv_ptr        ds = dri3_screen_priv(screen);
86    dri3_screen_info_ptr        info = ds->info;
87    int                         fd;
88
89    if (!info || !info->fd_from_pixmap)
90        return BadImplementation;
91
92    fd = (*info->fd_from_pixmap)(screen, pixmap, stride, size);
93    if (fd < 0)
94        return BadAlloc;
95    *pfd = fd;
96    return Success;
97}
98
99