Imported Upstream version 1.15.1
[deb_xorg-server.git] / present / present_fake.c
CommitLineData
a09e091a
JB
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 "present_priv.h"
28#include "list.h"
29
30static struct xorg_list fake_vblank_queue;
31
32typedef struct present_fake_vblank {
33 struct xorg_list list;
34 uint64_t event_id;
35 OsTimerPtr timer;
36 ScreenPtr screen;
37} present_fake_vblank_rec, *present_fake_vblank_ptr;
38
39int
40present_fake_get_ust_msc(ScreenPtr screen, uint64_t *ust, uint64_t *msc)
41{
42 present_screen_priv_ptr screen_priv = present_screen_priv(screen);
43
44 *ust = GetTimeInMicros();
45 *msc = (*ust + screen_priv->fake_interval / 2) / screen_priv->fake_interval;
46 return Success;
47}
48
49static void
50present_fake_notify(ScreenPtr screen, uint64_t event_id)
51{
52 uint64_t ust, msc;
53
54 present_fake_get_ust_msc(screen, &ust, &msc);
55 present_event_notify(event_id, ust, msc);
56}
57
58static CARD32
59present_fake_do_timer(OsTimerPtr timer,
60 CARD32 time,
61 pointer arg)
62{
63 present_fake_vblank_ptr fake_vblank = arg;
64
65 present_fake_notify(fake_vblank->screen, fake_vblank->event_id);
66 xorg_list_del(&fake_vblank->list);
67 free(fake_vblank);
68 return 0;
69}
70
71void
72present_fake_abort_vblank(ScreenPtr screen, uint64_t event_id, uint64_t msc)
73{
74 present_fake_vblank_ptr fake_vblank, tmp;
75
76 xorg_list_for_each_entry_safe(fake_vblank, tmp, &fake_vblank_queue, list) {
77 if (fake_vblank->event_id == event_id) {
78 TimerCancel(fake_vblank->timer);
79 xorg_list_del(&fake_vblank->list);
80 free (fake_vblank);
81 break;
82 }
83 }
84}
85
86int
87present_fake_queue_vblank(ScreenPtr screen,
88 uint64_t event_id,
89 uint64_t msc)
90{
91 present_screen_priv_ptr screen_priv = present_screen_priv(screen);
92 uint64_t ust = msc * screen_priv->fake_interval;
93 uint64_t now = GetTimeInMicros();
94 INT32 delay = ((int64_t) (ust - now)) / 1000;
95 present_fake_vblank_ptr fake_vblank;
96
97 if (delay <= 0) {
98 present_fake_notify(screen, event_id);
99 return Success;
100 }
101
102 fake_vblank = calloc (1, sizeof (present_fake_vblank_rec));
103 if (!fake_vblank)
104 return BadAlloc;
105
106 fake_vblank->screen = screen;
107 fake_vblank->event_id = event_id;
108 fake_vblank->timer = TimerSet(NULL, 0, delay, present_fake_do_timer, fake_vblank);
109 if (!fake_vblank->timer) {
110 free(fake_vblank);
111 return BadAlloc;
112 }
113
114 xorg_list_add(&fake_vblank->list, &fake_vblank_queue);
115
116 return Success;
117}
118
119void
120present_fake_screen_init(ScreenPtr screen)
121{
122 present_screen_priv_ptr screen_priv = present_screen_priv(screen);
123
124 /* For screens with hardware vblank support, the fake code
125 * will be used for off-screen windows and while screens are blanked,
126 * in which case we want a slow interval here
127 *
128 * Otherwise, pretend that the screen runs at 60Hz
129 */
130 if (screen_priv->info && screen_priv->info->get_crtc)
131 screen_priv->fake_interval = 1000000;
132 else
133 screen_priv->fake_interval = 16667;
134}
135
136void
137present_fake_queue_init(void)
138{
139 xorg_list_init(&fake_vblank_queue);
140}