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      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