1 /*
2 * Copyright © 2014 NVIDIA Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #include <errno.h>
25 #include <fcntl.h>
26 #include <signal.h>
27 #include <stdio.h>
28 #include <stdint.h>
29 #include <string.h>
30 #include <unistd.h>
31 #ifdef HAVE_SYS_SELECT_H
32 #include <sys/select.h>
33 #endif
34
35 #include <drm_fourcc.h>
36
37 #include "util/pattern.h"
38 #include "libkms-test.h"
39
signal_handler(int signum)40 static void signal_handler(int signum)
41 {
42 }
43
main(int argc,char * argv[])44 int main(int argc, char *argv[])
45 {
46 struct kms_framebuffer *fb;
47 struct kms_screen *screen;
48 struct kms_device *device;
49 unsigned int index = 0;
50 struct sigaction sa;
51 int fd, err;
52 void *ptr;
53
54 if (argc < 2) {
55 fprintf(stderr, "usage: %s DEVICE\n", argv[0]);
56 return 1;
57 }
58
59 memset(&sa, 0, sizeof(sa));
60 sa.sa_handler = signal_handler;
61
62 err = sigaction(SIGINT, &sa, NULL);
63 if (err < 0) {
64 fprintf(stderr, "sigaction() failed: %m\n");
65 return 1;
66 }
67
68 fd = open(argv[1], O_RDWR);
69 if (fd < 0) {
70 fprintf(stderr, "open() failed: %m\n");
71 return 1;
72 }
73
74 device = kms_device_open(fd);
75 if (!device) {
76 fprintf(stderr, "kms_device_open() failed: %m\n");
77 return 1;
78 }
79
80 if (device->num_screens < 1) {
81 fprintf(stderr, "no screens found\n");
82 kms_device_close(device);
83 close(fd);
84 return 1;
85 }
86
87 /* TODO: allow command-line to override */
88 screen = device->screens[0];
89
90 printf("Using screen %s, resolution %ux%u\n", screen->name,
91 screen->width, screen->height);
92
93 fb = kms_framebuffer_create(device, screen->width, screen->height,
94 DRM_FORMAT_XRGB8888);
95 if (!fb) {
96 fprintf(stderr, "kms_framebuffer_create() failed\n");
97 return 1;
98 }
99
100 err = kms_framebuffer_map(fb, &ptr);
101 if (err < 0) {
102 fprintf(stderr, "kms_framebuffer_map() failed: %d\n", err);
103 return 1;
104 }
105
106 util_fill_pattern(fb->format, UTIL_PATTERN_SMPTE, &ptr, fb->width,
107 fb->height, fb->pitch);
108
109 kms_framebuffer_unmap(fb);
110
111 err = kms_screen_set(screen, device->crtcs[index++], fb);
112 if (err < 0) {
113 fprintf(stderr, "kms_screen_set() failed: %d\n", err);
114 return 1;
115 }
116
117 while (true) {
118 int nfds = STDIN_FILENO + 1;
119 struct timeval timeout;
120 fd_set fds;
121
122 memset(&timeout, 0, sizeof(timeout));
123 timeout.tv_sec = 5;
124 timeout.tv_usec = 0;
125
126 FD_ZERO(&fds);
127 FD_SET(STDIN_FILENO, &fds);
128
129 err = select(nfds, &fds, NULL, NULL, &timeout);
130 if (err < 0) {
131 if (errno == EINTR)
132 break;
133
134 fprintf(stderr, "select() failed: %d\n", errno);
135 break;
136 }
137
138 if (err > 0) {
139 if (FD_ISSET(STDIN_FILENO, &fds))
140 break;
141 }
142
143 /* switch CRTC */
144 if (index >= device->num_crtcs)
145 index = 0;
146
147 err = kms_screen_set(screen, device->crtcs[index], fb);
148 if (err < 0) {
149 fprintf(stderr, "kms_screen_set() failed: %d\n", err);
150 break;
151 }
152
153 index++;
154 }
155
156 kms_framebuffer_free(fb);
157 kms_device_close(device);
158 close(fd);
159
160 return 0;
161 }
162