428 lines
10 KiB
C
428 lines
10 KiB
C
#include <errno.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <wayland-client-protocol.h>
|
|
#include <wayland-client.h>
|
|
#include <time.h>
|
|
#include <poll.h>
|
|
#include "wlr-gamma-control-unstable-v1-client-protocol.h"
|
|
#include "color_math.h"
|
|
|
|
enum state {
|
|
HIGH_TEMP,
|
|
ANIMATING_TO_LOW,
|
|
LOW_TEMP,
|
|
ANIMATING_TO_HIGH,
|
|
};
|
|
|
|
static char *state_names[] = {
|
|
"high temperature",
|
|
"animating to low temperature",
|
|
"low temperature",
|
|
"animating to high temperature",
|
|
NULL
|
|
};
|
|
|
|
struct context {
|
|
double gamma;
|
|
|
|
int high_temp;
|
|
int low_temp;
|
|
int duration;
|
|
double longitude;
|
|
double latitude;
|
|
|
|
time_t start_time;
|
|
time_t stop_time;
|
|
int cur_temp;
|
|
enum state state;
|
|
time_t animation_start;
|
|
bool new_output;
|
|
|
|
struct wl_list outputs;
|
|
};
|
|
|
|
struct output {
|
|
struct context *context;
|
|
struct wl_output *wl_output;
|
|
uint32_t id;
|
|
struct zwlr_gamma_control_v1 *gamma_control;
|
|
uint32_t ramp_size;
|
|
int table_fd;
|
|
uint16_t *table;
|
|
struct wl_list link;
|
|
};
|
|
|
|
static struct zwlr_gamma_control_manager_v1 *gamma_control_manager = NULL;
|
|
|
|
static int create_anonymous_file(off_t size) {
|
|
char template[] = "/tmp/wlroots-shared-XXXXXX";
|
|
int fd = mkstemp(template);
|
|
if (fd < 0) {
|
|
return -1;
|
|
}
|
|
|
|
int ret;
|
|
do {
|
|
errno = 0;
|
|
ret = ftruncate(fd, size);
|
|
} while (errno == EINTR);
|
|
if (ret < 0) {
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
unlink(template);
|
|
return fd;
|
|
}
|
|
|
|
static int create_gamma_table(uint32_t ramp_size, uint16_t **table) {
|
|
size_t table_size = ramp_size * 3 * sizeof(uint16_t);
|
|
int fd = create_anonymous_file(table_size);
|
|
if (fd < 0) {
|
|
fprintf(stderr, "failed to create anonymous file\n");
|
|
return -1;
|
|
}
|
|
|
|
void *data =
|
|
mmap(NULL, table_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|
|
if (data == MAP_FAILED) {
|
|
fprintf(stderr, "failed to mmap()\n");
|
|
close(fd);
|
|
return -1;
|
|
}
|
|
|
|
*table = data;
|
|
return fd;
|
|
}
|
|
|
|
static void gamma_control_handle_gamma_size(void *data,
|
|
struct zwlr_gamma_control_v1 *gamma_control, uint32_t ramp_size) {
|
|
(void)gamma_control;
|
|
struct output *output = data;
|
|
output->ramp_size = ramp_size;
|
|
output->table_fd = create_gamma_table(ramp_size, &output->table);
|
|
output->context->new_output = true;
|
|
if (output->table_fd < 0) {
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
static void gamma_control_handle_failed(void *data,
|
|
struct zwlr_gamma_control_v1 *gamma_control) {
|
|
(void)gamma_control;
|
|
(void)data;
|
|
fprintf(stderr, "failed to set gamma table\n");
|
|
}
|
|
|
|
static const struct zwlr_gamma_control_v1_listener gamma_control_listener = {
|
|
.gamma_size = gamma_control_handle_gamma_size,
|
|
.failed = gamma_control_handle_failed,
|
|
};
|
|
|
|
static bool setup_output(struct output *output) {
|
|
if (gamma_control_manager == NULL || output->gamma_control != NULL) {
|
|
return false;
|
|
}
|
|
output->gamma_control = zwlr_gamma_control_manager_v1_get_gamma_control(
|
|
gamma_control_manager, output->wl_output);
|
|
zwlr_gamma_control_v1_add_listener(output->gamma_control,
|
|
&gamma_control_listener, output);
|
|
return true;
|
|
}
|
|
|
|
static void registry_handle_global(void *data, struct wl_registry *registry,
|
|
uint32_t name, const char *interface, uint32_t version) {
|
|
(void)version;
|
|
struct context *ctx = (struct context *)data;
|
|
if (strcmp(interface, wl_output_interface.name) == 0) {
|
|
struct output *output = calloc(1, sizeof(struct output));
|
|
output->id = name;
|
|
output->wl_output = wl_registry_bind(registry, name,
|
|
&wl_output_interface, 1);
|
|
output->table_fd = -1;
|
|
output->context = ctx;
|
|
wl_list_insert(&ctx->outputs, &output->link);
|
|
setup_output(output);
|
|
} else if (strcmp(interface,
|
|
zwlr_gamma_control_manager_v1_interface.name) == 0) {
|
|
gamma_control_manager = wl_registry_bind(registry, name,
|
|
&zwlr_gamma_control_manager_v1_interface, 1);
|
|
}
|
|
}
|
|
|
|
static void registry_handle_global_remove(void *data,
|
|
struct wl_registry *registry, uint32_t name) {
|
|
(void)registry;
|
|
struct context *ctx = (struct context *)data;
|
|
struct output *output, *tmp;
|
|
wl_list_for_each_safe(output, tmp, &ctx->outputs, link) {
|
|
if (output->id == name) {
|
|
if (output->gamma_control != NULL) {
|
|
zwlr_gamma_control_v1_destroy(output->gamma_control);
|
|
}
|
|
if (output->table_fd != -1) {
|
|
close(output->table_fd);
|
|
}
|
|
wl_list_remove(&output->link);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static const struct wl_registry_listener registry_listener = {
|
|
.global = registry_handle_global,
|
|
.global_remove = registry_handle_global_remove,
|
|
};
|
|
|
|
static void fill_gamma_table(uint16_t *table, uint32_t ramp_size, double rw, double gw, double bw, double gamma) {
|
|
uint16_t *r = table;
|
|
uint16_t *g = table + ramp_size;
|
|
uint16_t *b = table + 2 * ramp_size;
|
|
for (uint32_t i = 0; i < ramp_size; ++i) {
|
|
double val = (double)i / (ramp_size - 1);
|
|
r[i] = (uint16_t)(UINT16_MAX * pow(val * rw, 1.0 / gamma));
|
|
g[i] = (uint16_t)(UINT16_MAX * pow(val * gw, 1.0 / gamma));
|
|
b[i] = (uint16_t)(UINT16_MAX * pow(val * bw, 1.0 / gamma));
|
|
}
|
|
}
|
|
|
|
static void set_temperature(struct context *ctx) {
|
|
double rw, gw, bw;
|
|
calc_whitepoint(ctx->cur_temp, &rw, &gw, &bw);
|
|
|
|
struct output *output;
|
|
wl_list_for_each(output, &ctx->outputs, link) {
|
|
if (output->gamma_control == NULL || output->table_fd == -1) {
|
|
continue;
|
|
}
|
|
fill_gamma_table(output->table, output->ramp_size,
|
|
rw, gw, bw, ctx->gamma);
|
|
lseek(output->table_fd, 0, SEEK_SET);
|
|
zwlr_gamma_control_v1_set_gamma(output->gamma_control,
|
|
output->table_fd);
|
|
}
|
|
}
|
|
|
|
static void recalc_stops(struct context *ctx, time_t now) {
|
|
time_t day = now - (now % 86400);
|
|
if (day < ctx->stop_time) {
|
|
return;
|
|
}
|
|
|
|
struct tm tm = { 0 };
|
|
gmtime_r(&now, &tm);
|
|
sun(&tm, ctx->longitude, ctx->latitude, &ctx->start_time, &ctx->stop_time);
|
|
ctx->start_time += day;
|
|
ctx->stop_time += day;
|
|
|
|
struct tm sunrise, sunset;
|
|
localtime_r(&ctx->start_time, &sunrise);
|
|
localtime_r(&ctx->stop_time, &sunset);
|
|
fprintf(stderr, "cacluated new sun trajectory: sunrise %02d:%02d, sunset %02d:%02d\n",
|
|
sunrise.tm_hour, sunrise.tm_min,
|
|
sunset.tm_hour, sunset.tm_min);
|
|
}
|
|
|
|
static void update_temperature(struct context *ctx) {
|
|
time_t now = time(NULL);
|
|
int temp, temp_pos;
|
|
double time_pos;
|
|
|
|
recalc_stops(ctx, now);
|
|
|
|
switch (ctx->state) {
|
|
case HIGH_TEMP:
|
|
if (now < ctx->stop_time && now > ctx->start_time) {
|
|
temp = ctx->high_temp;
|
|
break;
|
|
}
|
|
ctx->state = ANIMATING_TO_LOW;
|
|
ctx->animation_start = ctx->stop_time;
|
|
// fallthrough
|
|
case ANIMATING_TO_LOW:
|
|
if (now > ctx->animation_start + ctx->duration) {
|
|
ctx->state = LOW_TEMP;
|
|
}
|
|
time_pos = clamp(((double)now - (double)ctx->animation_start) / (double)ctx->duration);
|
|
temp_pos = (double)(ctx->high_temp - ctx->low_temp) * time_pos;
|
|
temp = ctx->high_temp - temp_pos;
|
|
break;
|
|
case LOW_TEMP:
|
|
if (now > ctx->stop_time || now < ctx->start_time) {
|
|
temp = ctx->low_temp;
|
|
break;
|
|
}
|
|
ctx->state = ANIMATING_TO_HIGH;
|
|
ctx->animation_start = now;
|
|
// fallthrough
|
|
case ANIMATING_TO_HIGH:
|
|
if (now > ctx->animation_start + ctx->duration) {
|
|
ctx->state = HIGH_TEMP;
|
|
}
|
|
time_pos = clamp(((double)now - (double)ctx->animation_start) / (double)ctx->duration);
|
|
temp_pos = (double)(ctx->high_temp - ctx->low_temp) * time_pos;
|
|
temp = ctx->low_temp + temp_pos;
|
|
break;
|
|
}
|
|
|
|
if (temp != ctx->cur_temp || ctx->new_output) {
|
|
fprintf(stderr, "state: %s, temp: %d\n", state_names[ctx->state], temp);
|
|
ctx->cur_temp = temp;
|
|
ctx->new_output = false;
|
|
set_temperature(ctx);
|
|
}
|
|
}
|
|
|
|
static int increments(struct context *ctx, int to) {
|
|
int diff = abs(ctx->cur_temp - to) / 50;
|
|
int time = (ctx->duration * 1000) / diff;
|
|
return time > 600000 ? 600000 : time;
|
|
}
|
|
|
|
static int time_to_next_event(struct context *ctx) {
|
|
switch (ctx->state) {
|
|
case ANIMATING_TO_HIGH:
|
|
return increments(ctx, ctx->high_temp);
|
|
case ANIMATING_TO_LOW:
|
|
return increments(ctx, ctx->low_temp);
|
|
default:
|
|
return 600000;
|
|
}
|
|
}
|
|
|
|
static int display_poll(struct wl_display *display, short int events, int timeout) {
|
|
struct pollfd pfd[1];
|
|
pfd[0].fd = wl_display_get_fd(display);
|
|
pfd[0].events = events;
|
|
|
|
int ret;
|
|
do {
|
|
ret = poll(pfd, 1, timeout);
|
|
} while (ret == -1 && errno == EINTR);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int display_dispatch_with_timeout(struct wl_display *display, int timeout) {
|
|
if (wl_display_prepare_read(display) == -1) {
|
|
return wl_display_dispatch_pending(display);
|
|
}
|
|
|
|
int ret;
|
|
while (true) {
|
|
ret = wl_display_flush(display);
|
|
if (ret != -1 || errno != EAGAIN) {
|
|
break;
|
|
}
|
|
|
|
if (display_poll(display, POLLOUT, -1) == -1) {
|
|
wl_display_cancel_read(display);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (ret < 0 && errno != EPIPE) {
|
|
wl_display_cancel_read(display);
|
|
return -1;
|
|
}
|
|
|
|
if (display_poll(display, POLLIN, timeout) == -1) {
|
|
wl_display_cancel_read(display);
|
|
return -1;
|
|
}
|
|
|
|
if (wl_display_read_events(display) == -1) {
|
|
return -1;
|
|
}
|
|
|
|
return wl_display_dispatch_pending(display);
|
|
}
|
|
|
|
static const char usage[] = "usage: %s [options]\n"
|
|
" -h show this help message\n"
|
|
" -T <temp> set high temperature (default: 6500)\n"
|
|
" -t <temp> set low temperature (default: 4000)\n"
|
|
" -l <lat> set latitude (e.g. 39.913)\n"
|
|
" -L <long> set longitude (e.g. 116.363)\n"
|
|
" -d <minutes> set ramping duration in minutes (default: 60)\n"
|
|
" -g <gamma> set gamma (default: 1.0)\n";
|
|
|
|
int main(int argc, char *argv[]) {
|
|
|
|
tzset();
|
|
|
|
// Initialize defaults
|
|
struct context ctx = {
|
|
.gamma = 1.0,
|
|
.high_temp = 6500,
|
|
.low_temp = 4000,
|
|
.duration = 3600,
|
|
.state = HIGH_TEMP,
|
|
};
|
|
wl_list_init(&ctx.outputs);
|
|
|
|
int opt;
|
|
while ((opt = getopt(argc, argv, "hT:t:g:d:l:L:")) != -1) {
|
|
switch (opt) {
|
|
case 'T':
|
|
ctx.high_temp = strtol(optarg, NULL, 10);
|
|
break;
|
|
case 't':
|
|
ctx.low_temp = strtol(optarg, NULL, 10);
|
|
break;
|
|
case 'l':
|
|
ctx.latitude = strtod(optarg, NULL);
|
|
break;
|
|
case 'L':
|
|
ctx.longitude = strtod(optarg, NULL);
|
|
break;
|
|
case 'd':
|
|
ctx.duration = strtod(optarg, NULL) * 60;
|
|
break;
|
|
case 'g':
|
|
ctx.gamma = strtod(optarg, NULL);
|
|
break;
|
|
case 'h':
|
|
default:
|
|
fprintf(stderr, usage, argv[0]);
|
|
return opt == 'h' ? EXIT_SUCCESS : EXIT_FAILURE;
|
|
}
|
|
}
|
|
|
|
struct wl_display *display = wl_display_connect(NULL);
|
|
if (display == NULL) {
|
|
fprintf(stderr, "failed to create display\n");
|
|
return -1;
|
|
}
|
|
|
|
struct wl_registry *registry = wl_display_get_registry(display);
|
|
wl_registry_add_listener(registry, ®istry_listener, &ctx);
|
|
wl_display_roundtrip(display);
|
|
|
|
if (gamma_control_manager == NULL) {
|
|
fprintf(stderr,
|
|
"compositor doesn't support wlr-gamma-control-unstable-v1\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
struct output *output;
|
|
wl_list_for_each(output, &ctx.outputs, link) {
|
|
setup_output(output);
|
|
}
|
|
wl_display_roundtrip(display);
|
|
|
|
|
|
update_temperature(&ctx);
|
|
while (display_dispatch_with_timeout(display, time_to_next_event(&ctx)) != -1) {
|
|
update_temperature(&ctx);
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|