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 #ifdef HAVE_CONFIG_H 25 #include "config.h" 26 #endif 27 28 #include <errno.h> 29 #include <fcntl.h> 30 #include <signal.h> 31 #include <stdio.h> 32 #include <stdint.h> 33 #include <string.h> 34 #include <unistd.h> 35 #ifdef HAVE_SYS_SELECT_H 36 #include <sys/select.h> 37 #endif 38 39 #include <drm_fourcc.h> 40 41 #include "util/pattern.h" 42 #include "libkms-test.h" 43 44 static void signal_handler(int signum) 45 { 46 } 47 48 int main(int argc, char *argv[]) 49 { 50 struct kms_framebuffer *fb; 51 struct kms_screen *screen; 52 struct kms_device *device; 53 unsigned int index = 0; 54 struct sigaction sa; 55 int fd, err; 56 void *ptr; 57 58 if (argc < 2) { 59 fprintf(stderr, "usage: %s DEVICE\n", argv[0]); 60 return 1; 61 } 62 63 memset(&sa, 0, sizeof(sa)); 64 sa.sa_handler = signal_handler; 65 66 err = sigaction(SIGINT, &sa, NULL); 67 if (err < 0) { 68 fprintf(stderr, "sigaction() failed: %m\n"); 69 return 1; 70 } 71 72 fd = open(argv[1], O_RDWR); 73 if (fd < 0) { 74 fprintf(stderr, "open() failed: %m\n"); 75 return 1; 76 } 77 78 device = kms_device_open(fd); 79 if (!device) { 80 fprintf(stderr, "kms_device_open() failed: %m\n"); 81 return 1; 82 } 83 84 if (device->num_screens < 1) { 85 fprintf(stderr, "no screens found\n"); 86 kms_device_close(device); 87 close(fd); 88 return 1; 89 } 90 91 /* TODO: allow command-line to override */ 92 screen = device->screens[0]; 93 94 printf("Using screen %s, resolution %ux%u\n", screen->name, 95 screen->width, screen->height); 96 97 fb = kms_framebuffer_create(device, screen->width, screen->height, 98 DRM_FORMAT_XRGB8888); 99 if (!fb) { 100 fprintf(stderr, "kms_framebuffer_create() failed\n"); 101 return 1; 102 } 103 104 err = kms_framebuffer_map(fb, &ptr); 105 if (err < 0) { 106 fprintf(stderr, "kms_framebuffer_map() failed: %d\n", err); 107 return 1; 108 } 109 110 util_fill_pattern(fb->format, UTIL_PATTERN_SMPTE, &ptr, fb->width, 111 fb->height, fb->pitch); 112 113 kms_framebuffer_unmap(fb); 114 115 err = kms_screen_set(screen, device->crtcs[index++], fb); 116 if (err < 0) { 117 fprintf(stderr, "kms_screen_set() failed: %d\n", err); 118 return 1; 119 } 120 121 while (true) { 122 int nfds = STDIN_FILENO + 1; 123 struct timeval timeout; 124 fd_set fds; 125 126 memset(&timeout, 0, sizeof(timeout)); 127 timeout.tv_sec = 5; 128 timeout.tv_usec = 0; 129 130 FD_ZERO(&fds); 131 FD_SET(STDIN_FILENO, &fds); 132 133 err = select(nfds, &fds, NULL, NULL, &timeout); 134 if (err < 0) { 135 if (errno == EINTR) 136 break; 137 138 fprintf(stderr, "select() failed: %d\n", errno); 139 break; 140 } 141 142 if (err > 0) { 143 if (FD_ISSET(STDIN_FILENO, &fds)) 144 break; 145 } 146 147 /* switch CRTC */ 148 if (index >= device->num_crtcs) 149 index = 0; 150 151 err = kms_screen_set(screen, device->crtcs[index], fb); 152 if (err < 0) { 153 fprintf(stderr, "kms_screen_set() failed: %d\n", err); 154 break; 155 } 156 157 index++; 158 } 159 160 kms_framebuffer_free(fb); 161 kms_device_close(device); 162 close(fd); 163 164 return 0; 165 } 166