diff options
| -rw-r--r-- | utils/tinymix.c | 64 |
1 files changed, 49 insertions, 15 deletions
diff --git a/utils/tinymix.c b/utils/tinymix.c index f57238a..fe06243 100644 --- a/utils/tinymix.c +++ b/utils/tinymix.c @@ -30,10 +30,14 @@ #include <errno.h> #include <stdio.h> #include <stdlib.h> +#include <getopt.h> #include <ctype.h> #include <string.h> #include <limits.h> -#include <errno.h> + + +/* Flag set by ‘--verbose’. */ +int verbose_flag = 0; static void tinymix_list_controls(struct mixer *mixer); static void tinymix_detail_control(struct mixer *mixer, const char *control, @@ -42,19 +46,50 @@ static void tinymix_set_value(struct mixer *mixer, const char *control, char **values, unsigned int num_values); static void tinymix_print_enum(struct mixer_ctl *ctl, int print_all); +void usage(void) +{ + printf("Usage: tinymix [--verbose] [--help] [-D card] [-c control id] [value to set]\n"); +} + int main(int argc, char **argv) { struct mixer *mixer; int card = 0; + char control_id[32]; + + while (1) { + static struct option long_options[] = { + /* These options set a flag. */ + // FIXME - need to figure out how to pull in version? + // {"version", no_argument, &verbose_flag, 1}, + {"verbose", no_argument, &verbose_flag, 1}, + {"help", no_argument, NULL, 'h'}, + {0, 0, 0, 0} + }; - if ((argc > 2) && (strcmp(argv[1], "-D") == 0)) { - argv++; - if (argv[1]) { - card = atoi(argv[1]); - argv++; - argc -= 2; - } else { - argc -= 1; + /* getopt_long stores the option index here. */ + int option_index = 0; + int c = 0; + + c = getopt_long (argc, argv, "c:D:h", long_options, &option_index); + + /* Detect the end of the options. */ + if (c == -1) + break; + + switch (c) { + case 'c': + strncpy(control_id, optarg, sizeof(control_id)); + break; + + case 'D': + card = atoi(optarg); + break; + + case 'h': + usage(); + exit(0); + break; } } @@ -64,17 +99,16 @@ int main(int argc, char **argv) return EXIT_FAILURE; } - printf("Mixer name: '%s'\n", mixer_get_name(mixer)); - tinymix_list_controls(mixer); - if (argc == 1) { - printf("Usage: tinymix [-D card] [control id] [value to set]\n"); - } else if (argc == 2) { - tinymix_detail_control(mixer, argv[1], 1); + if (argc == 2) { + tinymix_detail_control(mixer, control_id, verbose_flag); } else if (argc >= 3) { tinymix_set_value(mixer, argv[1], &argv[2], argc - 2); } + if (verbose_flag) + tinymix_list_controls(mixer); + mixer_close(mixer); return 0; |