/* See LICENSE file for copyright and license details. */ #include "cg-base.h" #include #include #include #include #include #include /** * The default filter priority for the program */ const int64_t default_priority = (int64_t)1 << 61; /** * The default class for the program */ char default_class[] = PKGNAME "::cg-brilliance::standard"; /** * Class suffixes */ const char* const* class_suffixes = (const char* const[]){NULL}; /** * -d: keep process alive and remove filter on death */ static int dflag = 0; /** * -x: remove filter rather than adding it */ static int xflag = 0; /** * The brilliance of the red channel */ static double rvalue = 0; /** * The brilliance of the green channel */ static double gvalue = 0; /** * The brilliance of the blue channel */ static double bvalue = 0; /** * Print usage information and exit */ void usage(void) { fprintf(stderr, "Usage: %s [-M method] [-S site] [-c crtc]... [-R rule] " "(-x | [-p priority] [-d] (all | red green blue))\n", argv0); exit(1); } /** * Handle a command line option * * @param opt The option, it is a NUL-terminate two-character * string starting with either '-' or '+', if the * argument is not recognised, call `usage`. This * string will not be "-M", "-S", "-c", "-p", or "-R". * @param arg The argument associated with `opt`, * `NULL` there is no next argument, if this * parameter is `NULL` but needed, call `usage` * @return 0 if `arg` was not used, * 1 if `arg` was used, * -1 on error */ 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; default: usage(); } else usage(); return 0; (void) arg; } /** * Parse a non-negative double encoded as a string * * @param out Output parameter for the value * @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) { 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; } /** * This function is called after the last * call to `handle_opt` * * @param argc The number of unparsed arguments * @param argv `NULL` terminated list of unparsed arguments * @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) { char* red = NULL; char* green = NULL; char* blue = NULL; int q = xflag + dflag; if ((q > 1) || (xflag && (prio != NULL || argc))) usage(); if (argc == 1) red = green = blue = argv[0]; else if (argc == 3) { red = argv[0]; green = argv[1]; blue = argv[2]; } else if (argc || !xflag) usage(); if (argc) { if (parse_double(&rvalue, red) < 0) usage(); if (parse_double(&gvalue, blue) < 0) usage(); if (parse_double(&bvalue, green) < 0) usage(); } return 0; } /** * Fill a filter * * @param filter The filter to fill */ static void fill_filter(libcoopgamma_filter_t* restrict filter) { size_t i; switch (filter->depth) { #define X(CONST, MAX, TYPE, MEMBER) \ case CONST: \ for (i = 0; i < filter->ramps.MEMBER.red_size; i++) \ { \ double val = (double)(filter->ramps.MEMBER.red[i]); \ val *= rvalue; \ if (val < 0) filter->ramps.MEMBER.red[i] = 0; \ else if (val > (double)(MAX)) filter->ramps.MEMBER.red[i] = MAX; \ else filter->ramps.MEMBER.red[i] = (TYPE)val; \ } \ for (i = 0; i < filter->ramps.MEMBER.green_size; i++) \ { \ double val = (double)(filter->ramps.MEMBER.green[i]); \ val *= gvalue; \ if (val < 0) filter->ramps.MEMBER.green[i] = 0; \ else if (val > (double)(MAX)) filter->ramps.MEMBER.green[i] = MAX; \ else filter->ramps.MEMBER.green[i] = (TYPE)val; \ } \ for (i = 0; i < filter->ramps.MEMBER.blue_size; i++) \ { \ double val = (double)(filter->ramps.MEMBER.blue[i]); \ val *= bvalue; \ if (val < 0) filter->ramps.MEMBER.blue[i] = 0; \ else if (val > (double)(MAX)) filter->ramps.MEMBER.blue[i] = MAX; \ else filter->ramps.MEMBER.blue[i] = (TYPE)val; \ } \ break X(LIBCOOPGAMMA_UINT8, UINT8_MAX, uint8_t, u8); X(LIBCOOPGAMMA_UINT16, UINT16_MAX, uint16_t, u16); X(LIBCOOPGAMMA_UINT32, UINT32_MAX, uint32_t, u32); X(LIBCOOPGAMMA_UINT64, UINT64_MAX, uint64_t, u64); #undef X case LIBCOOPGAMMA_FLOAT: libclut_rgb_brightness(&(filter->ramps.f), (float)1, float, rvalue, gvalue, bvalue); libclut_clip(&(filter->ramps.f), (float)1, float, 1, 1, 1); break; case LIBCOOPGAMMA_DOUBLE: libclut_rgb_brightness(&(filter->ramps.d), (double)1, double, rvalue, gvalue, bvalue); libclut_clip(&(filter->ramps.d), (double)1, double, 1, 1, 1); break; default: abort(); } } /** * The main function for the program-specific code * * @return 0: Success * -1: Error, `errno` set * -2: Error, `cg.error` set * -3: Error, message already printed */ 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) if ((r = make_slaves()) < 0) return r; 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)); 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; } } while (r != 1) if ((r = synchronise(-1)) < 0) return r; if (!dflag) return 0; if (libcoopgamma_set_nonblocking(&cg, 0) < 0) return -1; for (;;) if (libcoopgamma_synchronise(&cg, NULL, 0, &j) < 0) switch (errno) { case 0: break; case ENOTRECOVERABLE: goto enotrecoverable; default: return -1; } enotrecoverable: for (;;) if (pause() < 0) return -1; }