diff options
| -rw-r--r-- | src/arg.h | 65 | ||||
| -rw-r--r-- | src/cg-query.c | 346 |
2 files changed, 411 insertions, 0 deletions
diff --git a/src/arg.h b/src/arg.h new file mode 100644 index 0000000..0b23c53 --- /dev/null +++ b/src/arg.h @@ -0,0 +1,65 @@ +/* + * Copy me if you can. + * by 20h + */ + +#ifndef ARG_H__ +#define ARG_H__ + +extern char *argv0; + +/* use main(int argc, char *argv[]) */ +#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\ + argv[0] && argv[0][0] == '-'\ + && argv[0][1];\ + argc--, argv++) {\ + char argc_;\ + char **argv_;\ + int brk_;\ + if (argv[0][1] == '-' && argv[0][2] == '\0') {\ + argv++;\ + argc--;\ + break;\ + }\ + for (brk_ = 0, argv[0]++, argv_ = argv;\ + argv[0][0] && !brk_;\ + argv[0]++) {\ + if (argv_ != argv)\ + break;\ + argc_ = argv[0][0];\ + switch (argc_) + +/* Handles obsolete -NUM syntax */ +#define ARGNUM case '0':\ + case '1':\ + case '2':\ + case '3':\ + case '4':\ + case '5':\ + case '6':\ + case '7':\ + case '8':\ + case '9' + +#define ARGEND }\ + } + +#define ARGC() argc_ + +#define ARGNUMF() (brk_ = 1, estrtonum(argv[0], 0, INT_MAX)) + +#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\ + ((x), abort(), (char *)0) :\ + (brk_ = 1, (argv[0][1] != '\0')?\ + (&argv[0][1]) :\ + (argc--, argv++, argv[0]))) + +#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\ + (char *)0 :\ + (brk_ = 1, (argv[0][1] != '\0')?\ + (&argv[0][1]) :\ + (argc--, argv++, argv[0]))) + +#define LNGARG() &argv[0][0] + +#endif diff --git a/src/cg-query.c b/src/cg-query.c new file mode 100644 index 0000000..b43613c --- /dev/null +++ b/src/cg-query.c @@ -0,0 +1,346 @@ +/** + * cg-tools -- Cooperative gamma-enabled tools + * Copyright (C) 2016 Mattias Andrée (maandree@kth.se) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#define _DEFAULT_SOURCE +#define _BSD_SOURCE + +#include "arg.h" + +#include <libcoopgamma.h> + +#include <errno.h> +#include <inttypes.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + + + +/** + * The libcoopgamma context + */ +static libcoopgamma_context_t cg; + +/** + * The name of the selected CRTC + */ +static char* crtc = NULL; + + + +/** + * Print usage information and exit + */ +void usage(void) +{ + fprintf(stderr, + "Usage: %s [-M method] [-S site] -c crtc\n", + argv0); + exit(1); +} + + +/** + * Initialise the process, specifically + * reset the signal mask and signal handlers + * + * @return Zero on success, -1 on error + */ +static int initialise_proc(void) +{ + sigset_t sigmask; + int sig; + + for (sig = 1; sig < _NSIG; sig++) + if (signal(sig, SIG_DFL) == SIG_ERR) + if (sig == SIGCHLD) + return -1; + + if (sigemptyset(&sigmask) < 0) + return -1; + if (sigprocmask(SIG_SETMASK, &sigmask, NULL) < 0) + return -1; + + return 0; +} + + +/** + * Print, to stdout, a list of all + * recognised adjustment methods + * + * @return Zero on success, -1 on error + */ +static int list_methods(void) +{ + char** list; + size_t i; + + list = libcoopgamma_get_methods(); + if (list == NULL) + return -1; + for (i = 0; list[i]; i++) + printf("%s\n", list[i]); + free(list); + if (fflush(stdout) < 0) + return -1; + + return 0; +} + + +/** + * Print, to stdout, a list of all CRTC:s + * + * A connection to the coopgamma server + * must have been made + * + * @return Zero on success, -1 on error, -2 + * on libcoopgamma error + */ +static int list_crtcs(void) +{ + char** list; + size_t i; + + list = libcoopgamma_get_crtcs_sync(&cg); + if (list == NULL) + return -2; + for (i = 0; list[i]; i++) + printf("%s\n", list[i]); + free(list); + if (fflush(stdout) < 0) + return -1; + + return 0; +} + + +/** + * Print, to stdout, information about + * the selected CRTC + * + * @return Zero on success, -1 on error, -2 + * on libcoopgamma error + */ +static int print_info(void) +{ + libcoopgamma_crtc_info_t info; + char* str; + int saved_errno; + + libcoopgamma_crtc_info_initialise(&info); + + if (libcoopgamma_get_gamma_info_sync(crtc, &info, &cg) < 0) + goto cg_fail;; + + printf("Cooperative gamma server running: %s\n", + info.cooperative ? "yes" : "no"); + + printf("Gamma adjustments supported: %s\n", + info.supported == LIBCOOPGAMMA_MAYBE ? "maybe" : info.supported ? "yes" : "no"); + + printf("Gamma ramps stops (red green blue): %zu %zu %zu\n", + info.red_size, info.green_size, info.blue_size); + + switch (info.depth) + { + case LIBCOOPGAMMA_DOUBLE: str = "double-precision floating-point"; break; + case LIBCOOPGAMMA_FLOAT: str = "single-precision floating-point"; break; + case LIBCOOPGAMMA_UINT8: str = "unsigned 8-bit integer"; break; + case LIBCOOPGAMMA_UINT16: str = "unsigned 16-bit integer"; break; + case LIBCOOPGAMMA_UINT32: str = "unsigned 32-bit integer"; break; + case LIBCOOPGAMMA_UINT64: str = "unsigned 64-bit integer"; break; + default: + errno = EPROTO; + goto fail; + } + printf("Gamma ramps stops value type: %s\n", str); + + if (info.colourspace != LIBCOOPGAMMA_UNKNOWN) + { + switch (info.colourspace) + { + case LIBCOOPGAMMA_SRGB: str = "sRGB"; break; + case LIBCOOPGAMMA_RGB: str = "non-standard RGB"; break; + case LIBCOOPGAMMA_NON_RGB: str = "non-RGB multicolour"; break; + case LIBCOOPGAMMA_GREY: str = "monochrome or singlecolour scale"; break; + default: + errno = EPROTO; + goto fail; + } + printf("Monitor's colourspace: %s\n", str); + } + + if (info.have_gamut) + { + printf("Monitor's red colour: %lf, %lf\n", + info.red_x / (double)1024, info.red_y / (double)1024); + + printf("Monitor's green colour: %lf, %lf\n", + info.green_x / (double)1024, info.green_y / (double)1024); + + printf("Monitor's blue colour: %lf, %lf\n", + info.blue_x / (double)1024, info.blue_y / (double)1024); + } + + return 0; + fail: + saved_errno = errno; + libcoopgamma_crtc_info_destroy(&info); + errno = saved_errno; + return -1; + cg_fail: + saved_errno = errno; + libcoopgamma_crtc_info_destroy(&info); + errno = saved_errno; + return -2; +} + + +/** + * -M METHOD + * Select adjustment method. If METHOD is "?", + * available methods will be printed to stdout. + * + * -S SITE + * Select site (display server instance). + * + * -c CRTC + * Select CRT controller. If CRTC is "?", CRTC:s + * will be printed to stdout. + * + * @param argc The number of command line arguments + * @param argv The command line arguments + * @return 0 on success, 1 on error + */ +int main(int argc, char* argv[]) +{ + int stage = 0; + int rc = 0; + char* method = NULL; + char* site = NULL; + + ARGBEGIN + { + case 'M': + if (method != NULL) + usage(); + method = EARGF(usage()); + break; + case 'S': + if (site != NULL) + usage(); + site = EARGF(usage()); + break; + case 'c': + if (crtc != NULL) + usage(); + crtc = EARGF(usage()); + break; + } + ARGEND; + + if (initialise_proc() < 0) + goto fail; + + if ((method != NULL) && !strcmp(method, "?")) + { + if ((site != NULL) || (crtc != NULL)) + usage(); + if (list_methods() < 0) + goto fail; + return 0; + } + + if (libcoopgamma_context_initialise(&cg) < 0) + goto fail; + stage++; + if (libcoopgamma_connect(method, site, &cg) < 0) + { + fprintf(stderr, "%s: server failed to initialise\n", argv0); + goto custom_fail; + } + stage++; + + if (!crtc) + usage(); + + if (!strcmp(crtc, "?")) + switch (list_crtcs()) + { + case 0: + goto done; + case -1: + goto fail; + default: + goto cg_fail; + } + + switch (print_info()) + { + case 0: + goto done; + case -1: + goto fail; + default: + goto cg_fail; + } + + fflush(stdout); + if (ferror(stdout)) + goto fail; + if (fclose(stdout) < 0) + goto fail; + + done: + if (stage >= 1) + libcoopgamma_context_destroy(&cg, stage >= 2); + return rc; + + custom_fail: + rc = 1; + goto done; + + fail: + rc = 1; + perror(argv0); + goto done; + + cg_fail: + rc = 1; + { + const char* side = cg.error.server_side ? "server" : "client"; + if (cg.error.custom) + { + if ((cg.error.number != 0) || (cg.error.description != NULL)) + fprintf(stderr, "%s: %s-side error number %" PRIu64 ": %s\n", + argv0, side, cg.error.number, cg.error.description); + else if (cg.error.number != 0) + fprintf(stderr, "%s: %s-side error number %" PRIu64 "\n", argv0, side, cg.error.number); + else if (cg.error.description != NULL) + fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, cg.error.description); + } + else if (cg.error.description != NULL) + fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, cg.error.description); + else + fprintf(stderr, "%s: %s-side error: %s\n", argv0, side, strerror(cg.error.number)); + } + goto done; +} + |