diff options
Diffstat (limited to 'cg-gamma.c')
| -rw-r--r-- | cg-gamma.c | 662 |
1 files changed, 328 insertions, 334 deletions
@@ -27,7 +27,7 @@ char default_class[] = PKGNAME "::cg-gamma::standard"; /** * Class suffixes */ -const char* const* class_suffixes = (const char* const[]){NULL}; +const char *const *class_suffixes = (const char *const[]){NULL}; @@ -44,7 +44,7 @@ static int xflag = 0; /** * -f: gamma listing file */ -static char* fflag = NULL; +static char *fflag = NULL; /** * The gamma of the red channel @@ -65,38 +65,39 @@ static double bgamma = 1; * `NULL`-terminated list of output * names listed in the configuration file */ -static char** names = NULL; +static char **names = NULL; /** * The gamma of the red channel on monitor * with same index in `names` */ -static double* rgammas = NULL; +static double *rgammas = NULL; /** * The gamma of the green channel on monitor * with same index in `names` */ -static double* ggammas = NULL; +static double *ggammas = NULL; /** * The gamma of the blue channel on monitor * with same index in `names` */ -static double* bgammas = NULL; +static double *bgammas = NULL; /** * Print usage information and exit */ -void usage(void) +void +usage(void) { - fprintf(stderr, - "Usage: %s [-M method] [-S site] [-c crtc]... [-R rule] " - "(-x | [-p priority] [-d] [-f file | all | red green blue])\n", - argv0); - exit(1); + fprintf(stderr, + "usage: %s [-M method] [-S site] [-c crtc]... [-R rule] " + "(-x | [-p priority] [-d] [-f file | all | red green blue])\n", + argv0); + exit(1); } @@ -106,21 +107,21 @@ void usage(void) * @param ret The value to return * @return `ret` is returned as is */ -static int cleanup(int ret) +static int +cleanup(int ret) { - int saved_errno = errno; - if (names != NULL) - { - char** p = names; - while (*p) - free(*p++); - } - free(names); - free(rgammas); - free(ggammas); - free(bgammas); - errno = saved_errno; - return ret; + int saved_errno = errno; + if (names) { + char **p = names; + while (*p) + free(*p++); + } + free(names); + free(rgammas); + free(ggammas); + free(bgammas); + errno = saved_errno; + return ret; } @@ -138,29 +139,30 @@ static int cleanup(int ret) * 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 'd': - if (dflag || xflag) - usage(); - dflag = 1; - break; - case 'x': - if (xflag || dflag) - usage(); - xflag = 1; - break; - case 'f': - if (fflag || !(fflag = arg)) - usage(); - return 1; - default: - usage(); - } - return 0; + if (opt[0] == '-') { + switch (opt[1]) { + case 'd': + if (dflag || xflag) + usage(); + dflag = 1; + break; + case 'x': + if (xflag || dflag) + usage(); + xflag = 1; + break; + case 'f': + if (fflag || !(fflag = arg)) + usage(); + return 1; + default: + usage(); + } + } + return 0; } @@ -170,25 +172,26 @@ int handle_opt(char* opt, char* arg) * @param confname The filename (excluding directory) of the configuration file * @return The full pathname of the configuration file, `NULL` on error */ -static char* get_conf_file(const char* restrict confname) +static char * +get_conf_file(const char *restrict confname) { - struct passwd* pw; - char* path; - - pw = getpwuid(getuid()); - if ((pw == NULL) || (pw->pw_dir == NULL)) - return NULL; - - path = malloc(strlen(pw->pw_dir) + strlen(confname) + sizeof("/.config/")); - if (path == NULL) - return NULL; - - sprintf(path, "%s/.config/%s", pw->pw_dir, confname); - - if (access(path, F_OK) < 0) - sprintf(path, "/etc/%s", confname); - - return path; + struct passwd *pw; + char *path; + + pw = getpwuid(getuid()); + if (!pw || !pw->pw_dir) + return NULL; + + path = malloc(strlen(pw->pw_dir) + strlen(confname) + sizeof("/.config/")); + if (!path) + return NULL; + + sprintf(path, "%s/.config/%s", pw->pw_dir, confname); + + if (access(path, F_OK) < 0) + sprintf(path, "/etc/%s", confname); + + return path; } @@ -199,16 +202,17 @@ static char* get_conf_file(const char* restrict confname) * @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; } @@ -218,142 +222,133 @@ static int parse_double(double* restrict out, const char* restrict str) * @param pathname The pathname of the file * @return Zero on success, -1 on error */ -static int parse_gamma_file(const char* restrict pathname) +static int +parse_gamma_file(const char *restrict pathname) { - int fd, saved_errno; - char* line = NULL; - size_t size = 0, lineno = 0, ptr = 0, alloc = 0; - ssize_t n; - FILE* f = NULL; - char* p; - char* q; - char* r; - char* g; - char* b; - - fd = open(pathname, O_RDONLY); - if (fd == -1) - return -1; - - f = fdopen(fd, "rb"); - if (f == NULL) - goto fail; - - while (n = getline(&line, &size, f), n >= 0) - { - lineno += 1; - - if ((n > 0) && (line[n - 1] == '\n')) - line[n - 1] = '\0'; - p = line; - while ((*p == ' ') || (*p == '\t')) p++; - if ((!*p) || (*p == '#')) - continue; - - r = strpbrk(line, " \t"); - if (r == NULL) - goto bad; - while (r[1] == ' ' || r[1] == '\t') r++; - g = strpbrk(r + 1, " \t"); - if (g == NULL) - goto bad; - while (g[1] == ' ' || g[1] == '\t') g++; - b = strpbrk(g + 1, " \t"); - if (b == NULL) - goto bad; - while (b[1] == ' ' || b[1] == '\t') b++; - - for (;;) - { - q = strpbrk(b + 1, " \t"); - if (q == NULL) - break; - while (q[1] == ' ' || q[1] == '\t') q++; - if (!*q) - break; - r = g, g = b, b = q; + int fd, saved_errno; + char *line = NULL; + size_t size = 0, lineno = 0, ptr = 0, alloc = 0; + ssize_t n; + FILE *f = NULL; + char *p, *q; + char *r, *g, *b; + void *new; + size_t new_size; + + fd = open(pathname, O_RDONLY); + if (fd < 0) + return -1; + + f = fdopen(fd, "rb"); + if (!f) + goto fail; + + while ((n = getline(&line, &size, f)) >= 0) { + lineno += 1; + + if (n > 0 && line[n - 1] == '\n') + line[n - 1] = '\0'; + for (p = line; *p == ' ' || *p == '\t'; p++); + if (!*p || *p == '#') + continue; + + r = strpbrk(line, " \t"); + if (!r) + goto bad; + for (; r[1] == ' ' || r[1] == '\t'; r++); + g = strpbrk(r + 1, " \t"); + if (!g) + goto bad; + for (; g[1] == ' ' || g[1] == '\t'; g++); + b = strpbrk(g + 1, " \t"); + if (!b) + goto bad; + for (; b[1] == ' ' || b[1] == '\t'; b++); + + for (;;) { + q = strpbrk(b + 1, " \t"); + if (!q) + break; + for (; q[1] == ' ' || q[1] == '\t'; q++); + if (!*q) + break; + r = g, g = b, b = q; + } + + *r++ = '\0'; + *g++ = '\0'; + *b++ = '\0'; + + if ((q = strpbrk(r, " \t"))) + *q = '\0'; + if ((q = strpbrk(g, " \t"))) + *q = '\0'; + if ((q = strpbrk(b, " \t"))) + *q = '\0'; + + q = strchr(p, '\0'); + while ((q != p) && ((q[-1] == ' ') || (q[-1] == '\t'))) + q--; + *q = '\0'; + + if (ptr == alloc) { + new_size = alloc ? (alloc << 1) : 4; + + new = realloc(rgammas, new_size * sizeof(*rgammas)); + if (!new) + goto fail; + rgammas = new; + + new = realloc(ggammas, new_size * sizeof(*ggammas)); + if (!new) + goto fail; + ggammas = new; + + new = realloc(bgammas, new_size * sizeof(*bgammas)); + if (!new) + goto fail; + bgammas = new; + + new = realloc(names, (new_size + 1) * sizeof(*names)); + if (!new) + goto fail; + names = new; + memset(names + alloc, 0, (new_size + 1 - alloc) * sizeof(*names)); + + alloc = new_size; + } + + if (parse_double(rgammas + ptr, r) < 0 || + parse_double(ggammas + ptr, g) < 0 || + parse_double(bgammas + ptr, b) < 0) + goto bad; + names[ptr] = malloc(strlen(p) + 1); + if (!names[ptr]) + goto fail; + strcpy(names[ptr], p); + ptr++; + + continue; + bad: + fprintf(stderr, "%s: ignoring malformatted line in %s: %zu\n", argv0, pathname, lineno); } - - *r++ = '\0'; - *g++ = '\0'; - *b++ = '\0'; - - q = strpbrk(r, " \t"); - if (q != NULL) - *q = '\0'; - q = strpbrk(g, " \t"); - if (q != NULL) - *q = '\0'; - q = strpbrk(b, " \t"); - if (q != NULL) - *q = '\0'; - - q = strchr(p, '\0'); - while ((q != p) && ((q[-1] == ' ') || (q[-1] == '\t'))) - q--; - *q = '\0'; - - if (ptr == alloc) - { - void* new; - size_t new_size = alloc ? (alloc << 1) : 4; - - new = realloc(rgammas, new_size * sizeof(*rgammas)); - if (new == NULL) - goto fail; - rgammas = new; - - new = realloc(ggammas, new_size * sizeof(*ggammas)); - if (new == NULL) - goto fail; - ggammas = new; - - new = realloc(bgammas, new_size * sizeof(*bgammas)); - if (new == NULL) - goto fail; - bgammas = new; - - new = realloc(names, (new_size + 1) * sizeof(*names)); - if (new == NULL) - goto fail; - names = new; - memset(names + alloc, 0, (new_size + 1 - alloc) * sizeof(*names)); - - alloc = new_size; + + if (fclose(f) < 0) { + f = NULL; + goto fail; } - - if ((parse_double(rgammas + ptr, r) < 0) || - (parse_double(ggammas + ptr, g) < 0) || - (parse_double(bgammas + ptr, b) < 0)) - goto bad; - names[ptr] = malloc(strlen(p) + 1); - if (names[ptr] == NULL) - goto fail; - strcpy(names[ptr], p); - ptr++; - - continue; - bad: - fprintf(stderr, "%s: ignoring malformatted line in %s: %zu\n", argv0, pathname, lineno); - } - - if (fclose(f) < 0) - { - f = NULL; - goto fail; - } - close(fd); - free(line); - return 0; - fail: - saved_errno = errno; - free(line); - if (f != NULL) - fclose(f); - if (fd >= 0) - close(fd); - errno = saved_errno; - return -1; + close(fd); + free(line); + return 0; +fail: + saved_errno = errno; + free(line); + if (f) + fclose(f); + if (fd >= 0) + close(fd); + errno = saved_errno; + return -1; } @@ -366,48 +361,48 @@ static int parse_gamma_file(const char* restrict pathname) * @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 free_fflag = 0, saved_errno; - int q = xflag + dflag; - if ((q > 1) || (fflag && argc) || (xflag && ((fflag != NULL) || (argc > 0) || (prio != NULL)))) - usage(); - if (argc == 1) - { - if (parse_double(&rgamma, argv[0]) < 0) - usage(); - bgamma = ggamma = rgamma; - } - else if (argc == 3) - { - if (parse_double(&rgamma, argv[0]) < 0) - usage(); - if (parse_double(&ggamma, argv[1]) < 0) - usage(); - if (parse_double(&bgamma, argv[2]) < 0) - usage(); - } - else if (argc) - usage(); - if (!argc && !fflag && !xflag) - { - fflag = get_conf_file("gamma"); - if (fflag == NULL) - return -1; - free_fflag = 1; - } - if (fflag) - if (parse_gamma_file(fflag) < 0) - goto fail; - if (free_fflag) - free(fflag), fflag = NULL; - return 0; - fail: - saved_errno = errno; - if (free_fflag) - free(fflag), fflag = NULL; - errno = saved_errno; - return cleanup(-1); + int free_fflag = 0, saved_errno; + int q = xflag + dflag; + if (q > 1 || (fflag && argc) || (xflag && (fflag || argc > 0 || prio))) + usage(); + if (argc == 1) { + if (parse_double(&rgamma, argv[0]) < 0) + usage(); + bgamma = ggamma = rgamma; + } else if (argc == 3) { + if (parse_double(&rgamma, argv[0]) < 0) + usage(); + if (parse_double(&ggamma, argv[1]) < 0) + usage(); + if (parse_double(&bgamma, argv[2]) < 0) + usage(); + } else if (argc) { + usage(); + } + if (!argc && !fflag && !xflag) { + fflag = get_conf_file("gamma"); + if (!fflag) + return -1; + free_fflag = 1; + } + if (fflag && parse_gamma_file(fflag) < 0) + goto fail; + if (free_fflag) { + free(fflag); + fflag = NULL; + } + return 0; +fail: + saved_errno = errno; + if (free_fflag) { + free(fflag); + fflag = NULL; + } + errno = saved_errno; + return cleanup(-1); } @@ -419,19 +414,19 @@ int handle_args(int argc, char* argv[], char* prio) * @param g The green gamma * @param b The blue gamma */ -static void fill_filter(libcoopgamma_filter_t* restrict filter, double r, double g, double b) +static void +fill_filter(libcoopgamma_filter_t *restrict filter, double r, double g, double b) { - switch (filter->depth) - { + switch (filter->depth) { #define X(CONST, MEMBER, MAX, TYPE)\ - case CONST:\ - libclut_gamma(&(filter->ramps.MEMBER), MAX, TYPE, r, g, b);\ - break; -LIST_DEPTHS + case CONST:\ + libclut_gamma(&filter->ramps.MEMBER, MAX, TYPE, r, g, b);\ + break; + LIST_DEPTHS #undef X - default: - abort(); - } + default: + abort(); + } } @@ -443,82 +438,81 @@ LIST_DEPTHS * -2: Error, `cg.error` set * -3: Error, message already printed */ -int start(void) +int +start(void) { - int r; - size_t i, j; - - if (xflag) - for (i = 0; i < filters_n; i++) - crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_REMOVE; - else if (dflag) - for (i = 0; i < filters_n; i++) - crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_UNTIL_DEATH; - else - for (i = 0; i < filters_n; i++) - crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_UNTIL_REMOVAL; - - if (!xflag && (names != NULL)) - if ((r = make_slaves()) < 0) - return cleanup(r); - - if (names == NULL) - for (i = 0, r = 1; i < filters_n; i++) - { - if (!(crtc_updates[i].master) || !(crtc_info[crtc_updates[i].crtc].supported)) - continue; - if (!xflag) - fill_filter(&(crtc_updates[i].filter), rgamma, ggamma, bgamma); - r = update_filter(i, 0); - if ((r == -2) || ((r == -1) && (errno != EAGAIN))) - return cleanup(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 cleanup(r); - } - } - else - for (i = 0, r = 1; i < filters_n; i++) - { - if (!(crtc_info[crtc_updates[i].crtc].supported)) - continue; - for (j = 0; names[j] != NULL; j++) - if (!strcasecmp(crtc_updates[i].filter.crtc, names[j])) - { - fill_filter(&(crtc_updates[i].filter), rgammas[j], ggammas[j], bgammas[j]); - r = update_filter(i, 0); - if ((r == -2) || ((r == -1) && (errno != EAGAIN))) + int r; + size_t i, j; + + if (xflag) + for (i = 0; i < filters_n; i++) + crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_REMOVE; + else if (dflag) + for (i = 0; i < filters_n; i++) + crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_UNTIL_DEATH; + else + for (i = 0; i < filters_n; i++) + crtc_updates[i].filter.lifespan = LIBCOOPGAMMA_UNTIL_REMOVAL; + + if (!xflag && names && (r = make_slaves()) < 0) return cleanup(r); - break; - } - } - - while (r != 1) - if ((r = synchronise(-1)) < 0) - return cleanup(r); - - if (!dflag) - return cleanup(0); - - if (libcoopgamma_set_nonblocking(&cg, 0) < 0) - return cleanup(-1); - for (;;) - if (libcoopgamma_synchronise(&cg, NULL, 0, &j) < 0) - switch (errno) - { - case 0: - break; - case ENOTRECOVERABLE: - goto enotrecoverable; - default: - return cleanup(-1); + + if (!names) { + for (i = 0, r = 1; i < filters_n; i++) { + if (!crtc_updates[i].master || !crtc_info[crtc_updates[i].crtc].supported) + continue; + if (!xflag) + fill_filter(&crtc_updates[i].filter, rgamma, ggamma, bgamma); + r = update_filter(i, 0); + if (r == -2 || (r == -1 && errno != EAGAIN)) + return cleanup(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 cleanup(r); + } + } + } + } else { + for (i = 0, r = 1; i < filters_n; i++) { + if (!crtc_info[crtc_updates[i].crtc].supported) + continue; + for (j = 0; names[j]; j++) { + if (!strcasecmp(crtc_updates[i].filter.crtc, names[j])) { + fill_filter(&crtc_updates[i].filter, rgammas[j], ggammas[j], bgammas[j]); + r = update_filter(i, 0); + if (r == -2 || (r == -1 && errno != EAGAIN)) + return cleanup(r); + break; + } + } + } } - - enotrecoverable: - for (;;) - if (pause() < 0) - return cleanup(-1); + + while (r != 1) + if ((r = synchronise(-1)) < 0) + return cleanup(r); + + if (!dflag) + return cleanup(0); + + if (libcoopgamma_set_nonblocking(&cg, 0) < 0) + return cleanup(-1); + for (;;) { + if (libcoopgamma_synchronise(&cg, NULL, 0, &j) < 0) { + switch (errno) { + case 0: + break; + case ENOTRECOVERABLE: + goto enotrecoverable; + default: + return cleanup(-1); + } + } + } + +enotrecoverable: + pause(); + return cleanup(-1); } |