Initial commit
Kenny Levinsen
commit
09e4710ae2
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@ -0,0 +1,270 @@
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#define _POSIX_C_SOURCE 200809L
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <wayland-client-protocol.h>
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#include <wayland-client.h>
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#include "wlr-gamma-control-unstable-v1-client-protocol.h"
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struct output {
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struct wl_output *wl_output;
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struct zwlr_gamma_control_v1 *gamma_control;
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uint32_t ramp_size;
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int table_fd;
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uint16_t *table;
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struct wl_list link;
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};
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static struct wl_list outputs;
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static struct zwlr_gamma_control_manager_v1 *gamma_control_manager = NULL;
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static int create_anonymous_file(off_t size) {
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char template[] = "/tmp/wlroots-shared-XXXXXX";
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int fd = mkstemp(template);
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if (fd < 0) {
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return -1;
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}
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int ret;
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do {
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errno = 0;
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ret = ftruncate(fd, size);
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} while (errno == EINTR);
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if (ret < 0) {
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close(fd);
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return -1;
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}
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unlink(template);
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return fd;
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}
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static int create_gamma_table(uint32_t ramp_size, uint16_t **table) {
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size_t table_size = ramp_size * 3 * sizeof(uint16_t);
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int fd = create_anonymous_file(table_size);
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if (fd < 0) {
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fprintf(stderr, "failed to create anonymous file\n");
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return -1;
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}
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void *data =
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mmap(NULL, table_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (data == MAP_FAILED) {
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fprintf(stderr, "failed to mmap()\n");
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close(fd);
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return -1;
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}
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*table = data;
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return fd;
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}
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static void gamma_control_handle_gamma_size(void *data,
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struct zwlr_gamma_control_v1 *gamma_control, uint32_t ramp_size) {
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struct output *output = data;
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output->ramp_size = ramp_size;
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output->table_fd = create_gamma_table(ramp_size, &output->table);
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if (output->table_fd < 0) {
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exit(EXIT_FAILURE);
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}
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}
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static void gamma_control_handle_failed(void *data,
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struct zwlr_gamma_control_v1 *gamma_control) {
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fprintf(stderr, "failed to set gamma table\n");
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exit(EXIT_FAILURE);
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}
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static const struct zwlr_gamma_control_v1_listener gamma_control_listener = {
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.gamma_size = gamma_control_handle_gamma_size,
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.failed = gamma_control_handle_failed,
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};
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static void registry_handle_global(void *data, struct wl_registry *registry,
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uint32_t name, const char *interface, uint32_t version) {
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if (strcmp(interface, wl_output_interface.name) == 0) {
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struct output *output = calloc(1, sizeof(struct output));
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output->wl_output = wl_registry_bind(registry, name,
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&wl_output_interface, 1);
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wl_list_insert(&outputs, &output->link);
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} else if (strcmp(interface,
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zwlr_gamma_control_manager_v1_interface.name) == 0) {
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gamma_control_manager = wl_registry_bind(registry, name,
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&zwlr_gamma_control_manager_v1_interface, 1);
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}
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}
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static void registry_handle_global_remove(void *data,
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struct wl_registry *registry, uint32_t name) {
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// Who cares?
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}
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static const struct wl_registry_listener registry_listener = {
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.global = registry_handle_global,
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.global_remove = registry_handle_global_remove,
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};
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static void fill_gamma_table(uint16_t *table, uint32_t ramp_size, double rw, double gw, double bw, double gamma) {
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uint16_t *r = table;
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uint16_t *g = table + ramp_size;
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uint16_t *b = table + 2 * ramp_size;
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for (uint32_t i = 0; i < ramp_size; ++i) {
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double val = (double)i / (ramp_size - 1);
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r[i] = (uint16_t)(UINT16_MAX * pow(val * rw, 1.0 / gamma));
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g[i] = (uint16_t)(UINT16_MAX * pow(val * gw, 1.0 / gamma));
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b[i] = (uint16_t)(UINT16_MAX * pow(val * bw, 1.0 / gamma));
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}
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}
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static int illuminant_d(int temp, double *x, double *y) {
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// https://en.wikipedia.org/wiki/Standard_illuminant#Illuminant_series_D
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if (temp >= 4000 && temp <= 7000) {
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*x = 0.244063 + (0.09911e3/temp) + (2.9678e6/pow(temp, 2)) - (4.6070e9/pow(temp, 3));
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} else if (temp > 7000 && temp <= 25000) {
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*x = 0.237040 + (0.24748e3/temp) + (1.9018e6/pow(temp, 2)) - (2.0064e9/pow(temp, 3));
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} else {
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errno = EINVAL;
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return -1;
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}
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*y = (-3 * pow(*x, 2)) + (2.870 * (*x)) - 0.275;
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return 0;
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}
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static int planckian_locus(int temp, double *x, double *y) {
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if (temp >= 1667 && temp <= 4000) {
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*x = (-0.2661239e9/pow(temp, 3)) - (0.2343589e6/pow(temp, 2)) + (0.8776956e3/temp) + 0.179910;
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if (temp <= 2222) {
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*y = (-1.1064814 * pow(*x, 3)) - (1.34811020 * pow(*x, 2)) + (2.18555832 * (*x)) - 0.20219683;
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} else {
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*y = (-0.9549476 * pow(*x, 3)) - (1.37418593 * pow(*x, 2)) + (2.09137015 * (*x)) - 0.16748867;
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}
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} else if (temp > 4000 && temp < 25000) {
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*x = (-3.0258469e9/pow(temp, 3)) + (2.1070379e6/pow(temp, 2)) + (0.2226347e3/temp) + 0.240390;
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*y = (3.0817580 * pow(*x, 3)) - (5.87338670 * pow(*x, 2)) + (3.75112997 * (*x)) - 0.37001483;
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} else {
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errno = EINVAL;
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return -1;
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}
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return 0;
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}
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static double srgb_gamma(double value, double gamma) {
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// https://en.wikipedia.org/wiki/SRGB
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if (value <= 0.0031308) {
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return 12.92 * value;
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} else {
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return pow(1.055 * value, 1.0/gamma) - 0.055;
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}
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}
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static double clamp(double value) {
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if (value > 1.0) {
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return 1.0;
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} else if (value < 0.0) {
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return 0.0;
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} else {
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return value;
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}
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}
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static void xyz_to_srgb(double x, double y, double z, double *r, double *g, double *b) {
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// http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
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*r = srgb_gamma(3.2404542 * x - 1.5371385 * y - 0.4985314 * z, 2.2);
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*g = srgb_gamma(-0.9692660 * x + 1.8760108 * y + 0.0415560 * z, 2.2);
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*b = srgb_gamma(0.0556434 * x - 0.2040259 * y + 1.0572252 * z, 2.2);
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}
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static void calc_whitepoint(int temp, double *rw, double *gw, double *bw) {
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if (temp == 6500) {
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*rw = *gw = *bw = 1.0;
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return;
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}
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double x = 1.0, y = 1.0;
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if (temp > 1667 && temp <= 6500) {
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planckian_locus(temp, &x, &y);
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} else if (temp >= 6500 && temp <= 25000) {
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illuminant_d(temp, &x, &y);
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}
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double z = 1.0 - x - y;
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xyz_to_srgb(x, y, z, rw, gw, bw);
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double maxw = fmaxl(*rw, fmaxl(*gw, *bw));
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*rw = clamp(*rw / maxw);
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*gw = clamp(*gw / maxw);
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*bw = clamp(*bw / maxw);
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}
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static const char usage[] = "usage: %s [options]\n"
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" -h show this help message\n"
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" -t <value> set temperature (default: 6500)\n"
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" -g <value> set gamma (default: 1)\n";
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int main(int argc, char *argv[]) {
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wl_list_init(&outputs);
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double gamma = 1;
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long temperature = 6500;
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int opt;
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while ((opt = getopt(argc, argv, "ht:g:")) != -1) {
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switch (opt) {
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case 't':
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temperature = strtol(optarg, NULL, 10);
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break;
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case 'g':
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gamma = strtod(optarg, NULL);
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break;
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case 'h':
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default:
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fprintf(stderr, usage, argv[0]);
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return opt == 'h' ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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}
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struct wl_display *display = wl_display_connect(NULL);
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if (display == NULL) {
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fprintf(stderr, "failed to create display\n");
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return -1;
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}
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struct wl_registry *registry = wl_display_get_registry(display);
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wl_registry_add_listener(registry, ®istry_listener, NULL);
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wl_display_roundtrip(display);
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if (gamma_control_manager == NULL) {
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fprintf(stderr,
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"compositor doesn't support wlr-gamma-control-unstable-v1\n");
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return EXIT_FAILURE;
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}
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struct output *output;
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wl_list_for_each(output, &outputs, link) {
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output->gamma_control = zwlr_gamma_control_manager_v1_get_gamma_control(
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gamma_control_manager, output->wl_output);
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zwlr_gamma_control_v1_add_listener(output->gamma_control,
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&gamma_control_listener, output);
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}
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wl_display_roundtrip(display);
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/* Approximate white point */
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double rw, gw, bw;
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calc_whitepoint(temperature, &rw, &gw, &bw);
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wl_list_for_each(output, &outputs, link) {
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fill_gamma_table(output->table, output->ramp_size,
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rw, gw, bw, gamma);
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zwlr_gamma_control_v1_set_gamma(output->gamma_control,
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output->table_fd);
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}
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while (wl_display_dispatch(display) != -1) {
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// This space is intentionnally left blank
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}
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return EXIT_SUCCESS;
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}
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@ -0,0 +1,51 @@
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project(
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'wlsunset',
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'c',
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meson_version: '>=0.53.0',
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default_options: [
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'c_std=c11',
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'warning_level=3',
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'werror=true',
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],
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)
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add_project_arguments(
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[
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'-Wundef',
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'-Wunused',
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'-Wlogical-op',
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'-Wmissing-include-dirs',
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'-Wold-style-definition', # nop
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'-Wpointer-arith',
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'-Wstrict-prototypes',
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'-Wimplicit-fallthrough',
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'-Wmissing-prototypes',
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'-Wno-unknown-warning-option',
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'-Wno-unused-command-line-argument',
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'-Wvla',
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'-Wl,--exclude-libs=ALL',
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],
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language: 'c',
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)
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scanner = find_program('wayland-scanner')
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scanner_private_code = generator(scanner, output: '@BASENAME@-protocol.c', arguments: ['private-code', '@INPUT@', '@OUTPUT@'])
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scanner_client_header = generator(scanner, output: '@BASENAME@-client-protocol.h', arguments: ['client-header', '@INPUT@', '@OUTPUT@'])
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protocols_src = [scanner_private_code.process('wlr-gamma-control-unstable-v1.xml')]
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protocols_headers = [scanner_client_header.process('wlr-gamma-control-unstable-v1.xml')]
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wl_client = dependency('wayland-client')
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wl_protocols = dependency('wayland-protocols')
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lib_protocols = static_library('protocols', protocols_src + protocols_headers, dependencies: wl_client)
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protocols_dep = declare_dependency(link_with: lib_protocols, sources: protocols_headers)
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cc = meson.get_compiler('c')
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m = cc.find_library('m')
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executable(
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'wlsunset',
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['main.c'],
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dependencies: [protocols_dep, m],
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install: true
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)
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|
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@ -0,0 +1,126 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<protocol name="wlr_gamma_control_unstable_v1">
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<copyright>
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Copyright © 2015 Giulio camuffo
|
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Copyright © 2018 Simon Ser
|
||||
|
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Permission to use, copy, modify, distribute, and sell this
|
||||
software and its documentation for any purpose is hereby granted
|
||||
without fee, provided that the above copyright notice appear in
|
||||
all copies and that both that copyright notice and this permission
|
||||
notice appear in supporting documentation, and that the name of
|
||||
the copyright holders not be used in advertising or publicity
|
||||
pertaining to distribution of the software without specific,
|
||||
written prior permission. The copyright holders make no
|
||||
representations about the suitability of this software for any
|
||||
purpose. It is provided "as is" without express or implied
|
||||
warranty.
|
||||
|
||||
THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
|
||||
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
|
||||
AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
|
||||
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
|
||||
THIS SOFTWARE.
|
||||
</copyright>
|
||||
|
||||
<description summary="manage gamma tables of outputs">
|
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This protocol allows a privileged client to set the gamma tables for
|
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outputs.
|
||||
|
||||
Warning! The protocol described in this file is experimental and
|
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backward incompatible changes may be made. Backward compatible changes
|
||||
may be added together with the corresponding interface version bump.
|
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Backward incompatible changes are done by bumping the version number in
|
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the protocol and interface names and resetting the interface version.
|
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Once the protocol is to be declared stable, the 'z' prefix and the
|
||||
version number in the protocol and interface names are removed and the
|
||||
interface version number is reset.
|
||||
</description>
|
||||
|
||||
<interface name="zwlr_gamma_control_manager_v1" version="1">
|
||||
<description summary="manager to create per-output gamma controls">
|
||||
This interface is a manager that allows creating per-output gamma
|
||||
controls.
|
||||
</description>
|
||||
|
||||
<request name="get_gamma_control">
|
||||
<description summary="get a gamma control for an output">
|
||||
Create a gamma control that can be used to adjust gamma tables for the
|
||||
provided output.
|
||||
</description>
|
||||
<arg name="id" type="new_id" interface="zwlr_gamma_control_v1"/>
|
||||
<arg name="output" type="object" interface="wl_output"/>
|
||||
</request>
|
||||
|
||||
<request name="destroy" type="destructor">
|
||||
<description summary="destroy the manager">
|
||||
All objects created by the manager will still remain valid, until their
|
||||
appropriate destroy request has been called.
|
||||
</description>
|
||||
</request>
|
||||
</interface>
|
||||
|
||||
<interface name="zwlr_gamma_control_v1" version="1">
|
||||
<description summary="adjust gamma tables for an output">
|
||||
This interface allows a client to adjust gamma tables for a particular
|
||||
output.
|
||||
|
||||
The client will receive the gamma size, and will then be able to set gamma
|
||||
tables. At any time the compositor can send a failed event indicating that
|
||||
this object is no longer valid.
|
||||
|
||||
There can only be at most one gamma control object per output, which
|
||||
has exclusive access to this particular output. When the gamma control
|
||||
object is destroyed, the gamma table is restored to its original value.
|
||||
</description>
|
||||
|
||||
<event name="gamma_size">
|
||||
<description summary="size of gamma ramps">
|
||||
Advertise the size of each gamma ramp.
|
||||
|
||||
This event is sent immediately when the gamma control object is created.
|
||||
</description>
|
||||
<arg name="size" type="uint" summary="number of elements in a ramp"/>
|
||||
</event>
|
||||
|
||||
<enum name="error">
|
||||
<entry name="invalid_gamma" value="1" summary="invalid gamma tables"/>
|
||||
</enum>
|
||||
|
||||
<request name="set_gamma">
|
||||
<description summary="set the gamma table">
|
||||
Set the gamma table. The file descriptor can be memory-mapped to provide
|
||||
the raw gamma table, which contains successive gamma ramps for the red,
|
||||
green and blue channels. Each gamma ramp is an array of 16-byte unsigned
|
||||
integers which has the same length as the gamma size.
|
||||
|
||||
The file descriptor data must have the same length as three times the
|
||||
gamma size.
|
||||
</description>
|
||||
<arg name="fd" type="fd" summary="gamma table file descriptor"/>
|
||||
</request>
|
||||
|
||||
<event name="failed">
|
||||
<description summary="object no longer valid">
|
||||
This event indicates that the gamma control is no longer valid. This
|
||||
can happen for a number of reasons, including:
|
||||
- The output doesn't support gamma tables
|
||||
- Setting the gamma tables failed
|
||||
- Another client already has exclusive gamma control for this output
|
||||
- The compositor has transferred gamma control to another client
|
||||
|
||||
Upon receiving this event, the client should destroy this object.
|
||||
</description>
|
||||
</event>
|
||||
|
||||
<request name="destroy" type="destructor">
|
||||
<description summary="destroy this control">
|
||||
Destroys the gamma control object. If the object is still valid, this
|
||||
restores the original gamma tables.
|
||||
</description>
|
||||
</request>
|
||||
</interface>
|
||||
</protocol>
|
||||
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Reference in New Issue