aboutsummaryrefslogtreecommitdiffstats
path: root/cg-rainbow.c
diff options
context:
space:
mode:
Diffstat (limited to 'cg-rainbow.c')
-rw-r--r--cg-rainbow.c251
1 files changed, 128 insertions, 123 deletions
diff --git a/cg-rainbow.c b/cg-rainbow.c
index 4cf4797..07ee4a5 100644
--- a/cg-rainbow.c
+++ b/cg-rainbow.c
@@ -27,19 +27,19 @@ char default_class[] = PKGNAME "::cg-rainbow::standard";
/**
* Class suffixes
*/
-const char* const* class_suffixes = (const char* const[]){NULL};
+const char *const *class_suffixes = (const char *const[]){NULL};
/**
* -s: rainbow-frequency in Hz
*/
-static char* sflag = NULL;
+static char *sflag = NULL;
/**
* -l: base luminosity
*/
-static char* lflag = NULL;
+static char *lflag = NULL;
/**
* The rainbow-frequency multiplied by 3
@@ -56,13 +56,14 @@ double luminosity = (double)1 / 3;
/**
* Print usage information and exit
*/
-void usage(void)
+void
+usage(void)
{
- fprintf(stderr,
- "Usage: %s [-M method] [-S site] [-c crtc]... [-R rule] [-p priority]"
- " [-l luminosity] [-s rainbowhz]\n",
- argv0);
- exit(1);
+ fprintf(stderr,
+ "usage: %s [-M method] [-S site] [-c crtc]... [-R rule] [-p priority]"
+ " [-l luminosity] [-s rainbowhz]\n",
+ argv0);
+ exit(1);
}
@@ -80,25 +81,26 @@ void usage(void)
* 1 if `arg` was used,
* -1 on error
*/
-int handle_opt(char* opt, char* arg)
+int
+handle_opt(char *opt, char *arg)
{
- if (opt[0] == '-')
- switch (opt[1])
- {
- case 'l':
- if (lflag || !(lflag = arg))
- usage();
- return 1;
- case 's':
- if (sflag || !(sflag = arg))
- usage();
- return 1;
- default:
- usage();
- }
- else
- usage();
- return 0;
+ if (opt[0] == '-') {
+ switch (opt[1]) {
+ case 'l':
+ if (lflag || !(lflag = arg))
+ usage();
+ return 1;
+ case 's':
+ if (sflag || !(sflag = arg))
+ usage();
+ return 1;
+ default:
+ usage();
+ }
+ } else {
+ usage();
+ }
+ return 0;
}
@@ -109,16 +111,17 @@ int handle_opt(char* opt, char* arg)
* @param str The string
* @return Zero on success, -1 if the string is invalid
*/
-static int parse_double(double* restrict out, const char* restrict str)
+static int
+parse_double(double *restrict out, const char *restrict str)
{
- char* end;
- errno = 0;
- *out = strtod(str, &end);
- if (errno || (*out < 0) || isinf(*out) || isnan(*out) || *end)
- return -1;
- if (!*str || !strchr("0123456789.", *str))
- return -1;
- return 0;
+ char *end;
+ errno = 0;
+ *out = strtod(str, &end);
+ if (errno || *out < 0 || isinf(*out) || isnan(*out) || *end)
+ return -1;
+ if (!*str || !strchr("0123456789.", *str))
+ return -1;
+ return 0;
}
@@ -131,25 +134,24 @@ static int parse_double(double* restrict out, const char* restrict str)
* @param prio The argument associated with the "-p" option
* @return Zero on success, -1 on error
*/
-int handle_args(int argc, char* argv[], char* prio)
+int
+handle_args(int argc, char *argv[], char *prio)
{
- int q = (lflag || sflag);
- if ((q > 1) || argc)
- usage();
- if (sflag != NULL)
- {
- if (parse_double(&rainbows_per_third_second, sflag) < 0)
- usage();
- rainbows_per_third_second *= 3;
- }
- if (lflag != NULL)
- {
- if (parse_double(&luminosity, lflag) < 0)
- usage();
- }
- return 0;
- (void) argv;
- (void) prio;
+ int q = (lflag || sflag);
+ if (q > 1 || argc)
+ usage();
+ if (sflag) {
+ if (parse_double(&rainbows_per_third_second, sflag) < 0)
+ usage();
+ rainbows_per_third_second *= 3;
+ }
+ if (lflag) {
+ if (parse_double(&luminosity, lflag) < 0)
+ usage();
+ }
+ return 0;
+ (void) argv;
+ (void) prio;
}
@@ -161,20 +163,20 @@ int handle_args(int argc, char* argv[], char* prio)
* @param green The green brightness
* @param blue The blue brightness
*/
-static void fill_filter(libcoopgamma_filter_t* restrict filter, double red, double green, double blue)
+static void
+fill_filter(libcoopgamma_filter_t *restrict filter, double red, double green, double blue)
{
- switch (filter->depth)
- {
+ switch (filter->depth) {
#define X(CONST, MEMBER, MAX, TYPE)\
- case CONST:\
- libclut_start_over(&(filter->ramps.MEMBER), MAX, TYPE, 1, 1, 1);\
- libclut_rgb_brightness(&(filter->ramps.MEMBER), MAX, TYPE, red, green, blue);\
- break;
-LIST_DEPTHS
+ case CONST:\
+ libclut_start_over(&filter->ramps.MEMBER, MAX, TYPE, 1, 1, 1);\
+ libclut_rgb_brightness(&filter->ramps.MEMBER, MAX, TYPE, red, green, blue);\
+ break;
+ LIST_DEPTHS
#undef X
- default:
- abort();
- }
+ default:
+ abort();
+ }
}
@@ -184,18 +186,19 @@ LIST_DEPTHS
* @param now Output parameter for the current time (monotonic)
* @return Zero on success, -1 on error
*/
-static int double_time(double* restrict now)
+static int
+double_time(double *restrict now)
{
#ifndef CLOCK_MONOTONIC_RAW
# define CLOCK_MONOTONIC_RAW CLOCK_MONOTONIC
#endif
- struct timespec ts;
- if (clock_gettime(CLOCK_MONOTONIC_RAW, &ts) < 0)
- return -1;
- *now = (double)(ts.tv_nsec);
- *now /= 1000000000L;
- *now += (double)(ts.tv_sec);
- return 0;
+ struct timespec ts;
+ if (clock_gettime(CLOCK_MONOTONIC_RAW, &ts) < 0)
+ return -1;
+ *now = (double)(ts.tv_nsec);
+ *now /= 1000000000L;
+ *now += (double)(ts.tv_sec);
+ return 0;
}
@@ -207,56 +210,58 @@ static int double_time(double* restrict now)
* -2: Error, `cg.error` set
* -3: Error, message already printed
*/
-int start(void)
+int
+start(void)
{
- int r;
- size_t i, j;
- double pal[3];
- double t, starttime;
-
- for (i = 0; i < filters_n; i++)
- crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_UNTIL_DEATH;
-
- if ((r = make_slaves()) < 0)
- return r;
-
- if ((r = double_time(&starttime)) < 0)
- return r;
-
- for (;;)
- {
- if ((r = double_time(&t)) < 0)
- return r;
- t -= starttime;
- t *= rainbows_per_third_second;
- pal[0] = pal[1] = pal[2] = luminosity;
- pal[((long)t) % 3] += 1 - fmod(t, 1);
- pal[((long)t + 1) % 3] += fmod(t, 1);
- if (pal[0] > 1) pal[0] = 1;
- if (pal[1] > 1) pal[1] = 1;
- if (pal[2] > 1) pal[2] = 1;
-
- for (i = 0, r = 1; i < filters_n; i++)
- {
- if (!(crtc_updates[i].master) || !(crtc_info[crtc_updates[i].crtc].supported))
- continue;
- fill_filter(&(crtc_updates[i].filter), pal[0], pal[1], pal[2]);
- r = update_filter(i, 0);
- if ((r == -2) || ((r == -1) && (errno != EAGAIN)))
- return r;
- if (crtc_updates[i].slaves != NULL)
- for (j = 0; crtc_updates[i].slaves[j] != 0; j++)
- {
- r = update_filter(crtc_updates[i].slaves[j], 0);
- if ((r == -2) || ((r == -1) && (errno != EAGAIN)))
- return r;
- }
+ int r;
+ size_t i, j;
+ double pal[3];
+ double t, starttime;
+
+ for (i = 0; i < filters_n; i++)
+ crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_UNTIL_DEATH;
+
+ if ((r = make_slaves()) < 0)
+ return r;
+
+ if ((r = double_time(&starttime)) < 0)
+ return r;
+
+ for (;;) {
+ if ((r = double_time(&t)) < 0)
+ return r;
+ t -= starttime;
+ t *= rainbows_per_third_second;
+ pal[0] = pal[1] = pal[2] = luminosity;
+ pal[((long)t) % 3] += 1 - fmod(t, 1);
+ pal[((long)t + 1) % 3] += fmod(t, 1);
+ if (pal[0] > 1)
+ pal[0] = 1;
+ if (pal[1] > 1)
+ pal[1] = 1;
+ if (pal[2] > 1)
+ pal[2] = 1;
+
+ for (i = 0, r = 1; i < filters_n; i++) {
+ if (!crtc_updates[i].master || !crtc_info[crtc_updates[i].crtc].supported)
+ continue;
+ fill_filter(&crtc_updates[i].filter, pal[0], pal[1], pal[2]);
+ r = update_filter(i, 0);
+ if (r == -2 || (r == -1 && errno != EAGAIN))
+ return r;
+ if (crtc_updates[i].slaves) {
+ for (j = 0; crtc_updates[i].slaves[j]; j++) {
+ r = update_filter(crtc_updates[i].slaves[j], 0);
+ if (r == -2 || (r == -1 && errno != EAGAIN))
+ return r;
+ }
+ }
+ }
+
+ while (r != 1)
+ if ((r = synchronise(-1)) < 0)
+ return r;
+
+ sched_yield();
}
-
- while (r != 1)
- if ((r = synchronise(-1)) < 0)
- return r;
-
- sched_yield();
- }
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-09-19 01:00:42 +0000