165 lines
3.8 KiB
C
165 lines
3.8 KiB
C
/*
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* Copyright © 2014 NVIDIA Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#include <drm_fourcc.h>
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#include "util/pattern.h"
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#include "libkms-test.h"
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static void signal_handler(int signum)
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{
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}
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int main(int argc, char *argv[])
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{
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struct kms_framebuffer *fb;
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struct kms_screen *screen;
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struct kms_device *device;
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unsigned int index = 0;
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struct sigaction sa;
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int fd, err;
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void *ptr;
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if (argc < 2) {
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fprintf(stderr, "usage: %s DEVICE\n", argv[0]);
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return 1;
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}
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = signal_handler;
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err = sigaction(SIGINT, &sa, NULL);
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if (err < 0) {
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fprintf(stderr, "sigaction() failed: %m\n");
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return 1;
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}
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fd = open(argv[1], O_RDWR);
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if (fd < 0) {
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fprintf(stderr, "open() failed: %m\n");
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return 1;
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}
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device = kms_device_open(fd);
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if (!device) {
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fprintf(stderr, "kms_device_open() failed: %m\n");
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return 1;
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}
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if (device->num_screens < 1) {
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fprintf(stderr, "no screens found\n");
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kms_device_close(device);
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close(fd);
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return 1;
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}
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/* TODO: allow command-line to override */
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screen = device->screens[0];
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printf("Using screen %s, resolution %ux%u\n", screen->name,
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screen->width, screen->height);
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fb = kms_framebuffer_create(device, screen->width, screen->height,
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DRM_FORMAT_XRGB8888);
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if (!fb) {
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fprintf(stderr, "kms_framebuffer_create() failed\n");
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return 1;
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}
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err = kms_framebuffer_map(fb, &ptr);
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if (err < 0) {
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fprintf(stderr, "kms_framebuffer_map() failed: %d\n", err);
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return 1;
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}
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util_fill_pattern(fb->format, UTIL_PATTERN_SMPTE, &ptr, fb->width,
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fb->height, fb->pitch);
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kms_framebuffer_unmap(fb);
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err = kms_screen_set(screen, device->crtcs[index++], fb);
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if (err < 0) {
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fprintf(stderr, "kms_screen_set() failed: %d\n", err);
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return 1;
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}
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while (true) {
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int nfds = STDIN_FILENO + 1;
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struct timeval timeout;
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fd_set fds;
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memset(&timeout, 0, sizeof(timeout));
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timeout.tv_sec = 5;
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timeout.tv_usec = 0;
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FD_ZERO(&fds);
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FD_SET(STDIN_FILENO, &fds);
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err = select(nfds, &fds, NULL, NULL, &timeout);
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if (err < 0) {
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if (errno == EINTR)
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break;
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fprintf(stderr, "select() failed: %d\n", errno);
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break;
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}
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if (err > 0) {
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if (FD_ISSET(STDIN_FILENO, &fds))
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break;
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}
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/* switch CRTC */
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if (index >= device->num_crtcs)
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index = 0;
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err = kms_screen_set(screen, device->crtcs[index], fb);
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if (err < 0) {
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fprintf(stderr, "kms_screen_set() failed: %d\n", err);
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break;
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}
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index++;
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}
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kms_framebuffer_free(fb);
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kms_device_close(device);
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close(fd);
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return 0;
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}
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