aboutsummaryrefslogtreecommitdiffstats
path: root/src/redshift.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/redshift.c')
-rw-r--r--src/redshift.c543
1 files changed, 0 insertions, 543 deletions
diff --git a/src/redshift.c b/src/redshift.c
deleted file mode 100644
index 5bc172e..0000000
--- a/src/redshift.c
+++ /dev/null
@@ -1,543 +0,0 @@
-/*-
- * redshift-ng - Automatically adjust display colour temperature according the Sun
- *
- * Copyright (c) 2009-2018 Jon Lund Steffensen <jonlst@gmail.com>
- * Copyright (c) 2014-2016, 2025 Mattias Andrée <m@maandree.se>
- *
- * redshift-ng 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.
- *
- * redshift-ng 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 redshift-ng. If not, see <http://www.gnu.org/licenses/>.
- */
-#include "common.h"
-
-
-/**
- * The number of milliseconds to sleep normally between colour updates
- */
-#define SLEEP_DURATION 5000U
-
-/**
- * The number of milliseconds to sleep between each step during
- * fade between large colour settings
- */
-#define SLEEP_DURATION_SHORT 25U
-
-/**
- * The fade time, for when making large changes in colour
- * settings, divided by `SLEEP_DURATION_SHORT`
- */
-#define FADE_LENGTH 160U
-
-
-char *argv0;
-
-
-/**
- * The user's current geographical location
- */
-static struct location location;
-
-/**
- * Whether the location provider is available
- */
-static int location_available;
-
-/**
- * State of location provider, `NULL` if none
- */
-static LOCATION_STATE *provider_state;
-
-/**
- * Locaiton provider functions
- */
-static const struct location_provider *provider;
-
-/**
- * State of the gamma ramp adjustment method, `NULL` if none (print mode)
- */
-static GAMMA_STATE *method_state;
-
-/**
- * Gamma ramp adjustment functions
- */
-static const struct gamma_method *method;
-
-
-/**
- * Suspend the process for a short time
- *
- * The process may be resumed earily, specifically
- * if it receives a signal
- *
- * @param msecs The number of milliseconds to sleep
- */
-static void
-millisleep(unsigned int msecs)
-{
-#ifdef WINDOWS
- Sleep(msecs); /* TODO [Windows] not interruptible */
-#else
- struct timespec ts;
- ts.tv_sec = (time_t)(msecs / 1000U);
- ts.tv_nsec = (long)(msecs % 1000U) * 1000000L;
- nanosleep(&ts, NULL);
-#endif
-}
-
-
-/**
- * Get the number of seconds since midnight
- *
- * @return The number of seconds since midnight
- */
-static time_t
-get_time_since_midnight(void)
-{
- time_t t = time(NULL);
- struct tm tm;
- localtime_r(&t, &tm);
- t = (time_t)tm.tm_sec;
- t += (time_t)tm.tm_min * 60;
- t += (time_t)tm.tm_hour * 3600;
- return t;
-}
-
-
-/**
- * Print the current period of the day
- *
- * @param period The current period of the day
- * @param day_level The current dayness level
- */
-static void
-print_period(enum period period, double day_level)
-{
- static const char *period_names[] = {
- /* TRANSLATORS: Name printed when period of day is unknown */
- [PERIOD_NONE] = N_("None"),
- [PERIOD_DAYTIME] = N_("Daytime"),
- [PERIOD_NIGHT] = N_("Night"),
- [PERIOD_TRANSITION] = N_("Transition")
- };
-
- if (period == PERIOD_TRANSITION)
- printf(_("Period: %s (%.2f%% day)\n"), gettext(period_names[period]), day_level * 100);
- else
- printf(_("Period: %s\n"), gettext(period_names[period]));
-}
-
-
-/**
- * Get the current period of day and the colour settings
- * applicable to the current time of the day
- *
- * @param colour_out Output parameter for the colour settings
- * @param period_out Output parameter for the period of the day
- * @param day_level_out Output parameter for the dayness level
- */
-static void
-get_colour_settings(struct colour_setting *colour_out, enum period *period_out, double *day_level_out)
-{
- time_t time_offset;
- double t, elevation;
-
- /* Get dayness level */
- if (scheme.type == CLOCK_SCHEME) {
- time_offset = get_time_since_midnight();
- while (time_offset >= scheme.time.periods->next->start)
- scheme.time.periods = scheme.time.periods->next;
- time_offset -= scheme.time.periods->start;
- if (time_offset < 0)
- time_offset += ONE_DAY;
- t = (double)time_offset;
- *day_level_out = fma(t, scheme.time.periods->diff_over_duration, scheme.time.periods->day_level);
-
- } else if (scheme.type == SOLAR_SCHEME) {
- if (libred_solar_elevation(location.latitude, location.longitude, &elevation))
- eprintf("libred_solar_elevation:");
- if (verbose) {
- /* TRANSLATORS: Append degree symbol if possible. */
- printf(_("Solar elevation: %f\n"), elevation);
- }
- *day_level_out = (elevation - scheme.elevation.low) / scheme.elevation.range;
- /* TODO ensure scheme.elevation.range==0 is supported */
-
- } else {
- /* Static scheme, no dayness-level or peroid; day_settings == nigh_settings, use either */
- *day_level_out = FNAN;
- *period_out = PERIOD_NONE;
- *colour_out = day_settings;
- return;
- }
-
- /* Clamp dayness level and get colour */
- if (*day_level_out <= 0.0) {
- *day_level_out = 0.0;
- *period_out = PERIOD_NIGHT;
- *colour_out = night_settings;
-
- } else if (*day_level_out >= 1.0) {
- *day_level_out = 1.0;
- *period_out = PERIOD_DAYTIME;
- *colour_out = day_settings;
-
- } else {
- *period_out = PERIOD_TRANSITION;
- interpolate_colour_settings(&night_settings, &day_settings, *day_level_out, colour_out);
- }
-}
-
-
-/**
- * Easing function used for fade effect
- *
- * See https://github.com/mietek/ease-tween
- *
- * @param t Raw fade progress
- * @return Fade progress to apply
- */
-GCC_ONLY(__attribute__((__const__)))
-static double
-ease_fade(double t)
-{
- if (t <= 0) return 0;
- if (t >= 1) return 1;
- return 1.0042954579734844 * exp(-6.4041738958415664 * exp(-7.2908241330981340 * t));
-}
-
-
-#ifndef WINDOWS /* we don't have poll on Windows, but neither do with have any dynamic location providers */
-/**
- * Get the current location
- *
- * The function will return once any of the following has occured:
- * - the specified timeout duration has elapsed,
- * - a location message has been received (could be location or error), or
- * - a signal(7) was received
- *
- * @param timeout The number of milliseconds to wait before
- * returning without updating the location
- * @param location_fd File descriptor to wait on to receive input event
- */
-static void
-pull_location(unsigned int timeout, int location_fd)
-{
- struct pollfd pollfds[1];
- struct location new_location;
- int r, new_available;
-
- /* Await new location information */
- pollfds[0].fd = location_fd;
- pollfds[0].events = POLLIN;
- r = poll(pollfds, 1, (int)timeout);
- if (r < 0) {
-#ifndef WINDOWS
- if (errno == EINTR)
- return;
-#endif
- weprintf("poll:");
- eprintf(_("Unable to get location from provider."));
- } else if (!r) {
- return;
- }
-
- /* Get new location and availability information */
- if (provider->fetch(provider_state, &new_location, &new_available) < 0)
- eprintf(_("Unable to get location from provider."));
- if (new_available < location_available) {
- weprintf(_("Location is temporarily unavailable; using previous"
- " location until it becomes available..."));
- location_available = 0;
- return;
- }
-
- /* Store and announce new location */
- if (new_available > location_available ||
- !exact_eq(new_location.latitude, location.latitude) ||
- !exact_eq(new_location.longitude, location.longitude)) {
- location_available = 1;
- location = new_location;
- print_location(&location);
- if (!location_is_valid(&location))
- eprintf(_("Invalid location returned from provider."));
- }
-}
-#endif
-
-
-/**
- * Loop for `PROGRAM_MODE_CONTINUAL`
- */
-static void
-run_continual_mode(void)
-{
- enum period period, prev_period = PERIOD_NONE;
- double day_level = FNAN, prev_day_level = FNAN;
- int disabled = disable, prev_disabled = !disable;
- int prev_use_fade = !use_fade;
- int prev_preserve_gamma = !preserve_gamma;
- int done = 0;
- struct colour_setting colour;
- struct colour_setting target_colour, prev_target_colour;
- struct colour_setting fade_start_colour;
- unsigned int fade_length = 0;
- unsigned int fade_time = 0;
- unsigned int delay;
- double fade_progress, eased_fade_progress;
-#ifndef WINDOWS
- int location_fd;
- sigset_t sigusr2_mask, old_mask;
- enum signals commands;
-
- sigemptyset(&sigusr2_mask);
- sigaddset(&sigusr2_mask, SIGUSR2);
-#endif
-
- disable = 0;
-
- prev_target_colour = COLOUR_SETTING_NEUTRAL;
- colour = COLOUR_SETTING_NEUTRAL;
-
- for (;;) {
- /* Act on signals */
- if (disable && !done) {
- disabled ^= 1;
- disable = 0;
- }
- if (exiting) {
- disabled = 1;
- exiting = 0;
- if (done || (disabled && !fade_length))
- break; /* On second signal stop the ongoing fade */
- done = 1;
- }
-#ifndef WINDOWS
- while (signals) {
- if (sigprocmask(SIG_BLOCK, &sigusr2_mask, &old_mask))
- eprintf("sigprocmask:");
- commands = signals;
- signals = 0;
-
- if (commands & SIGNAL_ORDER_BARRIER) sigdelset(&old_mask, SIGUSR2);
- if (commands & SIGNAL_DISABLE) disabled = 1;
- if (commands & SIGNAL_ENABLE) disabled = 0;
- if (commands & SIGNAL_RELOAD) {} /* TODO */
- if (commands & SIGNAL_USE_FADE_OFF) use_fade = 0;
- if (commands & SIGNAL_USE_FADE_ON) use_fade = 1;
- if (commands & SIGNAL_PRESERVE_GAMMA_OFF) preserve_gamma = 0;
- if (commands & SIGNAL_PRESERVE_GAMMA_ON) preserve_gamma = 1;
- if (commands & SIGNAL_EXIT_WITHOUT_RESET) {} /* TODO */
- if (commands & SIGNAL_VERBOSE_ON) verbose |= 2;
- if (commands & SIGNAL_VERBOSE_OFF) verbose &= ~2;
-
- if (commands & SIGNAL_IGNORE_SIGPIPE)
- if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
- weprintf("signal SIGPIPE SIG_IGN:");
-
- if (sigprocmask(SIG_SETMASK, &old_mask, NULL))
- eprintf("sigprocmask:");
-
-# if defined(__linux__)
- if (commands & SIGNAL_REEXEC) { /* TODO */
- }
-# endif
- }
-#endif
- if (verbose) {
- if (disabled != prev_disabled)
- printf(_("Status: %s\n"), disabled ? _("Disabled") : _("Enabled"));
- if (use_fade != prev_use_fade)
- printf(_("Fade: %s\n"), use_fade ? _("Disabled") : _("Enabled"));
- if (preserve_gamma != prev_preserve_gamma)
- printf(_("Preserve gamma: %s\n"), use_fade ? _("Disabled") : _("Enabled"));
- }
- prev_disabled = disabled;
- prev_use_fade = use_fade;
- prev_preserve_gamma = preserve_gamma;
-
- /* Get dayness level and corresponding colour settings */
- if (disabled) {
- period = PERIOD_NONE;
- target_colour = COLOUR_SETTING_NEUTRAL;
- } else {
- get_colour_settings(&target_colour, &period, &day_level);
- }
- if (verbose && (period != prev_period || !exact_eq(day_level, prev_day_level)))
- print_period(period, day_level);
- if (period != prev_period)
- run_period_change_hooks(prev_period, period);
- prev_period = period;
- prev_day_level = day_level;
- if (verbose) {
- if (prev_target_colour.temperature != target_colour.temperature)
- printf(_("Color temperature: %luK\n"), target_colour.temperature);
- if (!exact_eq(prev_target_colour.brightness, target_colour.brightness))
- printf(_("Brightness: %.2f\n"), target_colour.brightness);
- if (memcmp(prev_target_colour.gamma, target_colour.gamma, sizeof(target_colour.gamma))) {
- printf(_("Gamma: %.3f, %.3f, %.3f\n"),
- target_colour.gamma[0], target_colour.gamma[1], target_colour.gamma[2]);
- }
- }
-
- /* Fade if the parameter differences are too big to apply instantly */
- if (use_fade && colour_setting_diff_is_major(&target_colour, fade_length ? &prev_target_colour : &colour)) {
- fade_length = FADE_LENGTH;
- fade_time = 0;
- fade_start_colour = colour;
- }
- if (fade_length) {
- fade_progress = ++fade_time / (double)fade_length;
- eased_fade_progress = ease_fade(fade_progress);
- interpolate_colour_settings(&fade_start_colour, &target_colour, eased_fade_progress, &colour);
- if (fade_time == fade_length) {
- fade_time = 0;
- fade_length = 0;
- }
- } else {
- colour = target_colour;
- }
- prev_target_colour = target_colour;
-
- /* Break loop when done and final fade is over */
- if (done && !fade_length)
- break;
-
- /* Adjust temperature and sleep */
- if (method->apply(method_state, &colour, preserve_gamma) < 0)
- eprintf(_("Temperature adjustment failed."));
- delay = fade_length ? SLEEP_DURATION_SHORT : SLEEP_DURATION;
-#ifndef WINDOWS
- location_fd = scheme.type == SOLAR_SCHEME ? provider->get_fd(provider_state) : -1;
- if (location_fd >= 0)
- pull_location(delay, location_fd);
- else
-#endif
- millisleep(delay);
- /* SLEEP_DURATION_SHORT is short enough for remaining time after interruption to be ignored */
- }
-
- method->restore(method_state);
-}
-
-
-int
-main(int argc, char *argv[])
-{
- struct settings settings;
- double day_level;
- enum period period;
- struct colour_setting colour;
-#ifndef WINDOWS
- int fd;
-#endif
-
- argv0 = argv[0];
-
- /* Set up localisation */
-#ifdef ENABLE_NLS
- setlocale(LC_CTYPE, "");
- setlocale(LC_MESSAGES, "");
- bindtextdomain(PACKAGE, LOCALEDIR);
- textdomain(PACKAGE);
-#endif
-
- /* Ensure standard file descriptors exist */
-#ifndef WINDOWS
- fd = open("/dev/null", O_RDWR);
- while (fd < 2) {
- if (fd < 0)
- eprintf("open /dev/null O_RDWR:");
- fd = dup(fd);
- }
- if (fd > 2)
- close(fd);
-#endif
-
- /* Set up interprocess communication */
- install_signal_handlers();
-
- /* Get configurations and configure */
- load_settings(&settings, argc, argv);
- if (scheme.type == SOLAR_SCHEME) {
- acquire_location_provider(&settings, &provider_state);
- provider = settings.provider;
- }
- if (mode != PROGRAM_MODE_PRINT) {
- acquire_adjustment_method(&settings, &method_state);
- method = settings.method;
- }
- config_ini_free(&settings.config);
-
- /* Get location if required */
- if (scheme.type == SOLAR_SCHEME) {
- if (provider->get_fd(provider_state) >= 0)
- weprintf(_("Waiting for current location to become available..."));
- if (get_location(provider, provider_state, -1, &location) < 0)
- eprintf(_("Unable to get location from provider."));
- if (!location_is_valid(&location))
- eprintf(_("Invalid location returned from provider."));
- print_location(&location);
- location_available = 1;
- }
-
- /* Get and print colour to set or if continual mode the initial colour */
- get_colour_settings(&colour, &period, &day_level); /* needed in contiual mode for `period` and `day_level` */
- if (mode == PROGRAM_MODE_CONTINUAL)
- colour = COLOUR_SETTING_NEUTRAL;
- if (verbose || mode == PROGRAM_MODE_PRINT) {
- if (scheme.type != STATIC_SCHEME)
- print_period(period, day_level);
- printf(_("Color temperature: %luK\n"), colour.temperature);
- printf(_("Brightness: %.2f\n"), colour.brightness);
- printf(_("Gamma: %.3f, %.3f, %.3f\n"), colour.gamma[0], colour.gamma[1], colour.gamma[2]);
- }
-
- switch (mode) {
- case PROGRAM_MODE_PRINT:
- break;
-
- case PROGRAM_MODE_ONE_SHOT:
- case PROGRAM_MODE_UNTIL_DEATH:
- case PROGRAM_MODE_RESET:
- if (method->apply(method_state, &colour, preserve_gamma) < 0)
- eprintf(_("Temperature adjustment failed."));
- if (mode == PROGRAM_MODE_UNTIL_DEATH || method->autoreset) {
- weprintf(_("Press ctrl-c to stop..."));
- while (!exiting) {
- pause();
- if (signals & SIGNAL_EXIT_WITHOUT_RESET) {
- /* TODO disable reset if if using coopgamma */
- goto out;
- }
- }
- /* TODO reset if not using coopgamma */
- }
- break;
-
- case PROGRAM_MODE_CONTINUAL:
- run_continual_mode();
- break;
-
-#if defined(__GNUC__)
- default:
- __builtin_unreachable();
-#endif
- }
-
-out:
- if (provider_state)
- provider->free(provider_state);
- if (method_state)
- method->free(method_state);
- free(hook_file);
- return 0;
-}
generated by cgit v1.2.3-70-g09d2 (git 2.48.0) at 2025-04-06 05:39:40 +0000