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Kristian Høgsberg97ba2e62011-07-06 11:58:45 -04001/*
2 * Copyright © 2011 Benjamin Franzke
3 * Copyright © 2010 Intel Corporation
4 *
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that copyright
8 * notice and this permission notice appear in supporting documentation, and
9 * that the name of the copyright holders not be used in advertising or
10 * publicity pertaining to distribution of the software without specific,
11 * written prior permission. The copyright holders make no representations
12 * about the suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
14 *
15 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
17 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
19 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
20 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
21 * OF THIS SOFTWARE.
22 */
23
24#include <stdio.h>
25#include <stdlib.h>
26#include <string.h>
27#include <stdbool.h>
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -040028#include <assert.h>
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -040029#include <unistd.h>
30#include <sys/mman.h>
Pekka Paalanen88e60fc2011-12-13 12:09:09 +020031#include <signal.h>
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -040032
33#include <wayland-client.h>
34#include <wayland-egl.h>
35
36struct display {
37 struct wl_display *display;
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -040038 struct wl_compositor *compositor;
39 struct wl_shell *shell;
40 struct wl_shm *shm;
Kristian Høgsberga3cdf592011-11-17 10:27:17 -050041 uint32_t formats;
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -040042 uint32_t mask;
43};
44
45struct window {
46 struct display *display;
47 int width, height;
48 struct wl_surface *surface;
Pekka Paalanen9d1613e2011-11-25 12:09:16 +020049 struct wl_shell_surface *shell_surface;
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -040050 struct wl_buffer *buffer;
51 void *data;
52};
53
54static struct wl_buffer *
55create_shm_buffer(struct display *display,
Kristian Høgsbergf389cac2011-08-31 16:21:38 -040056 int width, int height, uint32_t format, void **data_out)
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -040057{
58 char filename[] = "/tmp/wayland-shm-XXXXXX";
59 struct wl_buffer *buffer;
60 int fd, size, stride;
61 void *data;
62
63 fd = mkstemp(filename);
64 if (fd < 0) {
65 fprintf(stderr, "open %s failed: %m\n", filename);
66 return NULL;
67 }
68 stride = width * 4;
69 size = stride * height;
70 if (ftruncate(fd, size) < 0) {
71 fprintf(stderr, "ftruncate failed: %m\n");
72 close(fd);
73 return NULL;
74 }
75
76 data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
77 unlink(filename);
78
79 if (data == MAP_FAILED) {
80 fprintf(stderr, "mmap failed: %m\n");
81 close(fd);
82 return NULL;
83 }
84
85 buffer = wl_shm_create_buffer(display->shm, fd,
Kristian Høgsbergf389cac2011-08-31 16:21:38 -040086 width, height, stride, format);
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -040087
88 close(fd);
89
90 *data_out = data;
91
92 return buffer;
93}
94
95static struct window *
96create_window(struct display *display, int width, int height)
97{
98 struct window *window;
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -040099
100 window = malloc(sizeof *window);
101 window->display = display;
102 window->width = width;
103 window->height = height;
104 window->surface = wl_compositor_create_surface(display->compositor);
Pekka Paalanen9d1613e2011-11-25 12:09:16 +0200105 window->shell_surface = wl_shell_get_shell_surface(display->shell,
106 window->surface);
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400107 window->buffer = create_shm_buffer(display,
108 width, height,
Kristian Høgsbergf389cac2011-08-31 16:21:38 -0400109 WL_SHM_FORMAT_XRGB32,
110 &window->data);
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400111
Pekka Paalanen9d1613e2011-11-25 12:09:16 +0200112 wl_shell_surface_set_toplevel(window->shell_surface);
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400113
114 return window;
115}
116
Kristian Høgsberg33418202011-08-16 23:01:28 -0400117static const struct wl_callback_listener frame_listener;
118
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400119static void
Kristian Høgsberg33418202011-08-16 23:01:28 -0400120redraw(void *data, struct wl_callback *callback, uint32_t time)
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400121{
122 struct window *window = data;
123 uint32_t *p;
124 int i, end, offset;
125
126 p = window->data;
127 end = window->width * window->height;
128 offset = time >> 4;
129 for (i = 0; i < end; i++)
130 p[i] = (i + offset) * 0x0080401;
131 wl_buffer_damage(window->buffer, 0, 0, window->width, window->height);
132
133 wl_surface_attach(window->surface, window->buffer, 0, 0);
134 wl_surface_damage(window->surface,
135 0, 0, window->width, window->height);
136
Kristian Høgsberg33418202011-08-16 23:01:28 -0400137 if (callback)
138 wl_callback_destroy(callback);
139
140 callback = wl_surface_frame(window->surface);
141 wl_callback_add_listener(callback, &frame_listener, window);
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400142}
143
Kristian Høgsberg33418202011-08-16 23:01:28 -0400144static const struct wl_callback_listener frame_listener = {
145 redraw
146};
147
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400148static void
Kristian Høgsberga3cdf592011-11-17 10:27:17 -0500149shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
150{
151 struct display *d = data;
152
153 d->formats |= (1 << format);
154}
155
156struct wl_shm_listener shm_listenter = {
157 shm_format
158};
159
160static void
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400161display_handle_global(struct wl_display *display, uint32_t id,
162 const char *interface, uint32_t version, void *data)
163{
164 struct display *d = data;
165
166 if (strcmp(interface, "wl_compositor") == 0) {
Kristian Høgsbergf790c792011-08-19 14:41:57 -0400167 d->compositor =
168 wl_display_bind(display, id, &wl_compositor_interface);
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400169 } else if (strcmp(interface, "wl_shell") == 0) {
Kristian Høgsbergf790c792011-08-19 14:41:57 -0400170 d->shell = wl_display_bind(display, id, &wl_shell_interface);
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400171 } else if (strcmp(interface, "wl_shm") == 0) {
Kristian Høgsbergf790c792011-08-19 14:41:57 -0400172 d->shm = wl_display_bind(display, id, &wl_shm_interface);
Kristian Høgsberga3cdf592011-11-17 10:27:17 -0500173 wl_shm_add_listener(d->shm, &shm_listenter, d);
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400174 }
175}
176
177static int
178event_mask_update(uint32_t mask, void *data)
179{
180 struct display *d = data;
181
182 d->mask = mask;
183
184 return 0;
185}
186
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400187static struct display *
188create_display(void)
189{
190 struct display *display;
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400191
192 display = malloc(sizeof *display);
193 display->display = wl_display_connect(NULL);
Tiago Vignatti79caa752011-07-21 16:35:38 +0300194 assert(display->display);
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400195
Kristian Høgsberga3cdf592011-11-17 10:27:17 -0500196 display->formats = 0;
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400197 wl_display_add_global_listener(display->display,
198 display_handle_global, display);
199 wl_display_iterate(display->display, WL_DISPLAY_READABLE);
Kristian Høgsberga3cdf592011-11-17 10:27:17 -0500200 wl_display_roundtrip(display->display);
201
202 if (!(display->formats & (1 << WL_SHM_FORMAT_XRGB32))) {
203 fprintf(stderr, "WL_SHM_FORMAT_XRGB32 not available\n");
204 exit(1);
205 }
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400206
207 wl_display_get_fd(display->display, event_mask_update, display);
208
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400209 return display;
210}
211
Pekka Paalanen88e60fc2011-12-13 12:09:09 +0200212static int running = 1;
213
214static void
215signal_int(int signum)
216{
217 running = 0;
218}
219
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400220int
221main(int argc, char **argv)
222{
Pekka Paalanen88e60fc2011-12-13 12:09:09 +0200223 struct sigaction sigint;
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400224 struct display *display;
225 struct window *window;
226
227 display = create_display();
228 window = create_window(display, 250, 250);
229
Pekka Paalanen88e60fc2011-12-13 12:09:09 +0200230 sigint.sa_handler = signal_int;
231 sigemptyset(&sigint.sa_mask);
232 sigint.sa_flags = SA_RESETHAND;
233 sigaction(SIGINT, &sigint, NULL);
234
Kristian Høgsberg33418202011-08-16 23:01:28 -0400235 redraw(window, NULL, 0);
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400236
Pekka Paalanen88e60fc2011-12-13 12:09:09 +0200237 while (running)
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400238 wl_display_iterate(display->display, display->mask);
239
Pekka Paalanen88e60fc2011-12-13 12:09:09 +0200240 fprintf(stderr, "simple-shm exiting\n");
241
Kristian Høgsberg97ba2e62011-07-06 11:58:45 -0400242 return 0;
243}