aboutsummaryrefslogtreecommitdiffstats
path: root/src/unstickpixels.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/unstickpixels.c491
1 files changed, 0 insertions, 491 deletions
diff --git a/src/unstickpixels.c b/src/unstickpixels.c
deleted file mode 100644
index 9a59aa3..0000000
--- a/src/unstickpixels.c
+++ /dev/null
@@ -1,491 +0,0 @@
-/**
- * unstickpixels – screen loop to try to unstick stuck pixels
- *
- * Copyright © 2013, 2015 Mattias Andrée (maandree@member.fsf.org)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-#define _XOPEN_SOURCE 700
-#define _DEFAULT_SOURCE
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <string.h>
-#include <assert.h>
-#include <time.h>
-#include <errno.h>
-#include <ctype.h>
-#include <signal.h>
-#include <sys/wait.h>
-
-#include <libgamma.h>
-
-
-
-#define t(...) do { if (__VA_ARGS__) goto fail; } while (0)
-
-
-#define WELCOME_MESSAGE \
- "\033[H\033[01;31mWARNING: Do not use this if you have epilepsia.\033[00m\n" \
- "\n" \
- "It is recommended to massage the defective dots, whilst\n" \
- "running this program.\n" \
- "\n" \
- "Press C-c to quit, and Enter to start (C-c will quit).\n" \
- "\n" \
- "\n" \
- "You should not have to run this program. If the manufacture or\n" \
- "reseller of your monitor refuse to replace or repair the monitor\n" \
- "that was broken, because of manufacturing error, when it was\n" \
- "chiped to you, please consider yelling at the support, threaten\n" \
- "to report the personally because of involvement in organised\n" \
- "crime (not replacing hardware that was chipped broken when you\n" \
- "selled it is a crime, and they do this in an organised fashion\n" \
- "to make money), call their executive director persistently at\n" \
- "inconvenient times, report them applicable board for consumer\n" \
- "disputes/complaints or equivalent agency. If this program does\n" \
- "not help, and the manufacture is Packard Bell, or its\n" \
- "supersidiary Acer, tell them that you have tried a program\n" \
- "that was prompted by the complete suckness and incapability\n" \
- "to repair defects that they have agreed to repair. They suck!\n" \
- "\n" \
- "\n" \
- "\n" \
- "Copyright © 2013, 2015 Mattias Andrée (maandree@member.fsf.org)\n" \
- "\n" \
- "This program is free software: you can redistribute it and/or modify\n" \
- "it under the terms of the GNU General Public License as published by\n" \
- "the Free Software Foundation, either version 3 of the License, or\n" \
- "(at your option) any later version.\n" \
- "\n" \
- "This program is distributed in the hope that it will be useful,\n" \
- "but WITHOUT ANY WARRANTY; without even the implied warranty of\n" \
- "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" \
- "GNU General Public License for more details.\n" \
- "\n" \
- "You should have received a copy of the GNU General Public License\n" \
- "along with this program. If not, see <http://www.gnu.org/licenses/>."
-
-
-/**
- * The name of the process.
- */
-const char* argv0;
-
-/**
- * Should we exit?
- */
-static volatile sig_atomic_t please_exit = 0;
-
-/**
- * The name of the site.
- */
-static char* sitename = NULL;
-
-/**
- * The site.
- */
-static libgamma_site_state_t site;
-
-/**
- * The partitions.
- */
-static libgamma_partition_state_t* restrict* restrict parts = NULL;
-
-/**
- * The CRTC:s.
- */
-static libgamma_crtc_state_t* restrict* restrict crtcs = NULL;
-
-/**
- * The ramps to use when displaying red.
- */
-static libgamma_gamma_ramps16_t* restrict* restrict ramps_red = NULL;
-
-/**
- * The ramps to use when displaying green.
- */
-static libgamma_gamma_ramps16_t* restrict* restrict ramps_green = NULL;
-
-/**
- * The ramps to use when displaying blue.
- */
-static libgamma_gamma_ramps16_t* restrict* restrict ramps_blue = NULL;
-
-/**
- * The original ramps.
- */
-static libgamma_gamma_ramps16_t* restrict* restrict ramps_saved = NULL;
-
-/**
- * 2: `site` initialised and all ramps saved.
- * 1: `site` initialised.
- * 0: nothing done.
- */
-static int clut_state = 0;
-
-
-
-/**
- * Parse interval argument.
- *
- * @param argv The interval argument.
- * @param interval Output parameter for the interval.
- * @param nonzero With be set to zero if the interval is zero,
- * otherwise it is set to a non-zero value (1).
- * @return 0 on success, -1 on error.
- */
-static int get_interval(const char* restrict arg, struct timespec* restrict interval, int* restrict nonzero)
-{
- char* end;
- *nonzero = 1;
- errno = EINVAL;
- t (!isdigit(*arg));
- interval->tv_sec = (time_t)(errno = 0, strtol)(arg, &end, 10);
- t (errno || (errno = EINVAL, *end));
- interval->tv_nsec = interval->tv_sec % 1000;
- interval->tv_sec /= 1000;
- interval->tv_nsec *= 1000000L;
- if (interval->tv_sec == 0)
- if (interval->tv_nsec == 0)
- *nonzero = 0;
- return 0;
- fail:
- return -1;
-}
-
-
-/**
- * Wrapper for fork(3) that clocks all signals in the parent.
- *
- * @return See fork(3).
- */
-static pid_t xfork(void)
-{
- sigset_t set;
- pid_t pid;
- sigfillset(&set);
- sigprocmask(SIG_BLOCK, &set, 0);
- pid = fork();
- if (pid != -1)
- sigprocmask(SIG_UNBLOCK, &set, 0);
- return pid;
-}
-
-
-/**
- * Print usage information and exit.
- */
-static void usage(void)
-{
- exit(fprintf(stderr, "Usage: %s [-v] [--] [SLEEP_INTERVAL_MS]\n",
- strrchr(argv0, '/') ? (strrchr(argv0, '/') + 1) : argv0
- ) < 0 ? 1 : 2);
-}
-
-
-/**
- * Uninitialise the CLUT backend.
- *
- * @return 0 on success, -1 on error.
- */
-static void term_clut()
-{
- size_t i, j;
- if (clut_state == 2)
- for (j = 0; j < 2; j++, usleep(1000000L / 10L))
- for (i = 0; crtcs && crtcs[i]; i++, usleep(1000000L / 100L))
- libgamma_crtc_set_gamma_ramps16(crtcs[i], *(ramps_saved[i]));
- for (i = 0; crtcs && crtcs[i]; i++)
- {
- libgamma_crtc_free(crtcs[i]);
- libgamma_gamma_ramps16_free(ramps_red[i]);
- libgamma_gamma_ramps16_free(ramps_green[i]);
- libgamma_gamma_ramps16_free(ramps_blue[i]);
- libgamma_gamma_ramps16_free(ramps_saved[i]);
- }
- free((void*)crtcs);
- free((void*)ramps_red);
- free((void*)ramps_green);
- free((void*)ramps_blue);
- free((void*)ramps_saved);
- for (i = 0; parts && parts[i]; i++)
- libgamma_partition_free(parts[i]);
- free((void*)parts);
- free((void*)sitename);
- if (clut_state)
- libgamma_site_destroy(&site);
- sitename = NULL;
- parts = NULL;
- crtcs = NULL;
- ramps_red = ramps_green = ramps_blue = ramps_saved = NULL;
- clut_state = 0;
-}
-
-
-/**
- * Initialise the CLUT backend.
- *
- * @return 0 on success, -1 on error.
- */
-static int init_clut()
-{
- int method, error = 0;
- size_t i, j, k, n = 0;
- libgamma_crtc_information_t info;
-
- if (libgamma_list_methods(&method, 1, 0) < 1)
- {
- fprintf(stderr, "%s: could not get adjustment method, try '%s -v'.\n", argv0, argv0);
- return -1;
- }
-
- sitename = libgamma_method_default_site(method);
- if (sitename)
- {
- sitename = strdup(sitename);
- t (sitename == NULL);
- }
- t ((error = libgamma_site_initialise(&site, method, sitename)));
- sitename = NULL;
-
- clut_state++;
-
- if (site.partitions_available == 0)
- {
- fprintf(stderr, "%s: could find any graphics card/screen, try '%s -v'.\n", argv0, argv0);
- errno = 0;
- goto fail;
- }
-
- t (!(parts = calloc(site.partitions_available + 1, sizeof(*parts))));
- for (i = 0; i < site.partitions_available; i++)
- {
- t (!(parts[i] = calloc(1, sizeof(**parts))));
- t ((errno = libgamma_partition_initialise(parts[i], &site, i)));
- n += parts[i]->crtcs_available;
- }
-
- if (n == 0)
- {
- fprintf(stderr, "%s: could find any CRTC, try '%s -v'.\n", argv0, argv0);
- errno = 0;
- goto fail;
- }
-
- t (!(crtcs = calloc(n + 1, sizeof(*crtcs))));
- t (!(ramps_red = calloc(n + 1, sizeof(*ramps_red))));
- t (!(ramps_green = calloc(n + 1, sizeof(*ramps_green))));
- t (!(ramps_blue = calloc(n + 1, sizeof(*ramps_blue))));
- t (!(ramps_saved = calloc(n + 1, sizeof(*ramps_saved))));
- for (i = k = 0; i < site.partitions_available; i++)
- for (j = 0; j < parts[i]->crtcs_available; j++, k++)
- {
- t (!(crtcs[k] = calloc(1, sizeof(**crtcs))));
- t (!(ramps_red[k] = calloc(1, sizeof(**ramps_red))));
- t (!(ramps_green[k] = calloc(1, sizeof(**ramps_green))));
- t (!(ramps_blue[k] = calloc(1, sizeof(**ramps_blue))));
- t (!(ramps_saved[k] = calloc(1, sizeof(**ramps_saved))));
- t ((error = libgamma_crtc_initialise(crtcs[k], parts[i], j)));
- if (libgamma_get_crtc_information(&info, crtcs[k], LIBGAMMA_CRTC_INFO_GAMMA_SIZE))
- t ((error = info.gamma_size_error));
- ramps_red[k]->red_size = info.red_gamma_size;
- ramps_red[k]->green_size = info.green_gamma_size;
- ramps_red[k]->blue_size = info.blue_gamma_size;
- *(ramps_saved[k]) = *(ramps_blue[k]) = *(ramps_green[k]) = *(ramps_red[k]);
- t (libgamma_gamma_ramps16_initialise(ramps_red[k]));
- t (libgamma_gamma_ramps16_initialise(ramps_green[k]));
- t (libgamma_gamma_ramps16_initialise(ramps_blue[k]));
- t (libgamma_gamma_ramps16_initialise(ramps_saved[k]));
- memset(ramps_red[k]->red, ~0, ramps_red[k]->red_size * sizeof(*(ramps_red[k]->red)));
- memset(ramps_red[k]->green, 0, ramps_red[k]->green_size * sizeof(*(ramps_red[k]->green)));
- memset(ramps_red[k]->blue, 0, ramps_red[k]->blue_size * sizeof(*(ramps_red[k]->blue)));
- memset(ramps_green[k]->red, 0, ramps_green[k]->red_size * sizeof(*(ramps_green[k]->red)));
- memset(ramps_green[k]->green, ~0, ramps_green[k]->green_size * sizeof(*(ramps_green[k]->green)));
- memset(ramps_green[k]->blue, 0, ramps_green[k]->blue_size * sizeof(*(ramps_green[k]->blue)));
- memset(ramps_blue[k]->red, 0, ramps_blue[k]->red_size * sizeof(*(ramps_blue[k]->red)));
- memset(ramps_blue[k]->green, 0, ramps_blue[k]->green_size * sizeof(*(ramps_blue[k]->green)));
- memset(ramps_blue[k]->blue, ~0, ramps_blue[k]->blue_size * sizeof(*(ramps_blue[k]->blue)));
- t ((error = libgamma_crtc_get_gamma_ramps16(crtcs[k], ramps_saved[k])));
- }
-
- clut_state++;
-
- return 0;
- fail:
- if (error)
- libgamma_perror(argv0, error);
- else if (errno)
- perror(argv0);
- term_clut();
- errno = 0;
- return -1;
-}
-
-
-/**
- * The loop, using the graphic cards' colour lookup tables.
- *
- * @param interval The sleep interval, `NULL` for no sleep.
- */
-static void loop_clut(const struct timespec* restrict interval)
-{
- size_t i;
- int error;
-
- while (!please_exit)
- {
- for (i = 0; crtcs[i]; i++)
- t ((error = libgamma_crtc_set_gamma_ramps16(crtcs[i], *(ramps_red[i]))));
- if (interval)
- t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
-
- for (i = 0; crtcs[i]; i++)
- t ((error = libgamma_crtc_set_gamma_ramps16(crtcs[i], *(ramps_green[i]))));
- if (interval)
- t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
-
- for (i = 0; crtcs[i]; i++)
- t ((error = libgamma_crtc_set_gamma_ramps16(crtcs[i], *(ramps_blue[i]))));
- if (interval)
- t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
- }
- return;
- fail:
- if (error)
- libgamma_perror(argv0, error), errno = 0;
-}
-
-
-/**
- * The loop, using Linux VT.
- *
- * @param interval The sleep interval, `NULL` for no sleep.
- */
-static void loop_vt(const struct timespec* restrict interval)
-{
- while (!please_exit)
- {
- t (printf("\033]P0FF0000\033[2J") == -1);
- t (fflush(stdout));
- if (interval)
- t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
-
- t (printf("\033]P000FF00\033[2J") == -1);
- t (fflush(stdout));
- if (interval)
- t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
-
- t (printf("\033]P00000FF\033[2J") == -1);
- t (fflush(stdout));
- if (interval)
- t ((errno = clock_nanosleep(CLOCK_MONOTONIC, 0, interval, NULL)));
- }
- return;
- fail:
- return;
-}
-
-
-/**
- * Signal handler for signals that exit the program.
- *
- * @param signo The caught signal.
- */
-static void sigexit(int signo)
-{
- signal(signo, sigexit);
- please_exit = 1;
-}
-
-
-int main(int argc, char* argv[])
-{
- int started = 0;
- int with_sleep = 0;
- struct timespec interval;
- int status, vt = 0, c = 0;
- pid_t pid = -1;
- int saved_errno;
-
- for (argv0 = (argc ? "unstickpixels" : *argv); c != -1;)
- switch ((c = getopt(argc, argv, "v")))
- {
- case 'v': vt = 1;
- case -1: break;
- case '?': usage();
- default: assert(0), abort();
- }
- if (optind < argc)
- t (get_interval(argv[optind++], &interval, &with_sleep));
- if (optind < argc)
- usage();
-
- printf("\033[?25l\033[H\033[2J");
- printf(WELCOME_MESSAGE);
- fflush(stdout);
-
- siginterrupt(SIGHUP, 1);
- siginterrupt(SIGTERM, 1);
- siginterrupt(SIGINT, 1);
- siginterrupt(SIGQUIT, 1);
- signal(SIGHUP, sigexit);
- signal(SIGTERM, sigexit);
- signal(SIGINT, sigexit);
- signal(SIGQUIT, sigexit);
-
- if (read(STDIN_FILENO, &started, 1) < 0)
- goto done;
- started = 1;
-
- if (vt)
- t (printf("\033[H") == -1);
- else
- t (printf("\033[H\033[2JIf you can read this, try '%s -v'.\n", argv0) == -1);
- t (fflush(stdout));
-
- t (vt ? 0 : init_clut());
-
- t (pid = xfork(), pid == -1);
- if (pid)
- goto parent;
-
- (vt ? loop_vt : loop_clut)(with_sleep ? &interval : NULL);
-
- fail:
- saved_errno = errno;
- printf("%s\033[?25h\033[H\033[2J", (started && vt) ? "\033]P0000000" : "");
- fflush(stdout);
- if (!vt)
- term_clut();
- errno = saved_errno;
- if (pid == -1)
- {
- if (errno == EINVAL)
- usage();
- return (errno && (errno != EINTR)) ? (perror(argv0), 1) : 1;
- }
- return 0;
-
- parent:
- waitpid(pid, &status, 0);
- done:
- if (!vt)
- term_clut();
- printf("%s\033[?25h\033[H\033[2J", (started && vt) ? "\033]P0000000" : "");
- fflush(stdout);
- return WIFEXITED(status) ? WEXITSTATUS(status) : 0;
-}
-
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-23 11:08:53 +0000