diff options
Diffstat (limited to 'tinymix.c')
| -rw-r--r-- | tinymix.c | 111 |
1 files changed, 104 insertions, 7 deletions
@@ -27,10 +27,13 @@ */ #include <tinyalsa/asoundlib.h> +#include <errno.h> #include <stdio.h> #include <stdlib.h> #include <ctype.h> #include <string.h> +#include <limits.h> +#include <errno.h> static void tinymix_list_controls(struct mixer *mixer); static void tinymix_detail_control(struct mixer *mixer, const char *control, @@ -61,14 +64,17 @@ int main(int argc, char **argv) return EXIT_FAILURE; } - if (argc == 1) + + if (argc == 1) { + printf("Mixer name: '%s'\n", mixer_get_name(mixer)); tinymix_list_controls(mixer); - else if (argc == 2) + } else if (argc == 2) { tinymix_detail_control(mixer, argv[1], 1); - else if (argc >= 3) + } else if (argc >= 3) { tinymix_set_value(mixer, argv[1], &argv[2], argc - 2); - else + } else { printf("Usage: tinymix [-D card] [control id] [value to set]\n"); + } mixer_close(mixer); @@ -124,6 +130,9 @@ static void tinymix_detail_control(struct mixer *mixer, const char *control, unsigned int num_values; unsigned int i; int min, max; + int ret; + char *buf = NULL; + size_t len; if (isdigit(control[0])) ctl = mixer_get_ctl(mixer, atoi(control)); @@ -138,6 +147,23 @@ static void tinymix_detail_control(struct mixer *mixer, const char *control, type = mixer_ctl_get_type(ctl); num_values = mixer_ctl_get_num_values(ctl); + if (type == MIXER_CTL_TYPE_BYTE) { + + buf = calloc(1, num_values); + if (buf == NULL) { + fprintf(stderr, "Failed to alloc mem for bytes %d\n", num_values); + return; + } + + len = num_values; + ret = mixer_ctl_get_array(ctl, buf, len); + if (ret < 0) { + fprintf(stderr, "Failed to mixer_ctl_get_array\n"); + free(buf); + return; + } + } + if (print_all) printf("%s:", mixer_ctl_get_name(ctl)); @@ -153,8 +179,8 @@ static void tinymix_detail_control(struct mixer *mixer, const char *control, case MIXER_CTL_TYPE_ENUM: tinymix_print_enum(ctl, print_all); break; - case MIXER_CTL_TYPE_BYTE: - printf(" 0x%02x", mixer_ctl_get_value(ctl, i)); + case MIXER_CTL_TYPE_BYTE: + printf("%02x", buf[i]); break; default: printf(" unknown"); @@ -169,9 +195,75 @@ static void tinymix_detail_control(struct mixer *mixer, const char *control, printf(" (range %d->%d)", min, max); } } + + free(buf); + printf("\n"); } +static void tinymix_set_byte_ctl(struct mixer_ctl *ctl, + char **values, unsigned int num_values) +{ + int ret; + char *buf; + char *end; + unsigned int i; + long n; + + buf = calloc(1, num_values); + if (buf == NULL) { + fprintf(stderr, "set_byte_ctl: Failed to alloc mem for bytes %d\n", num_values); + exit(EXIT_FAILURE); + } + + for (i = 0; i < num_values; i++) { + errno = 0; + n = strtol(values[i], &end, 0); + if (*end) { + fprintf(stderr, "%s not an integer\n", values[i]); + goto fail; + } + if (errno) { + fprintf(stderr, "strtol: %s: %s\n", values[i], + strerror(errno)); + goto fail; + } + if (n < 0 || n > 0xff) { + fprintf(stderr, "%s should be between [0, 0xff]\n", + values[i]); + goto fail; + } + buf[i] = n; + } + + ret = mixer_ctl_set_array(ctl, buf, num_values); + if (ret < 0) { + fprintf(stderr, "Failed to set binary control\n"); + goto fail; + } + + free(buf); + return; + +fail: + free(buf); + exit(EXIT_FAILURE); +} + +static int is_int(char *value) +{ + char* end; + long int result; + + errno = 0; + result = strtol(value, &end, 10); + + if (result == LONG_MIN || result == LONG_MAX) + return 0; + + return errno == 0 && *end == '\0'; +} + static void tinymix_set_value(struct mixer *mixer, const char *control, char **values, unsigned int num_values) { @@ -193,7 +285,12 @@ static void tinymix_set_value(struct mixer *mixer, const char *control, type = mixer_ctl_get_type(ctl); num_ctl_values = mixer_ctl_get_num_values(ctl); - if (isdigit(values[0][0])) { + if (type == MIXER_CTL_TYPE_BYTE) { + tinymix_set_byte_ctl(ctl, values, num_values); + return; + } + + if (is_int(values[0])) { if (num_values == 1) { /* Set all values the same */ int value = atoi(values[0]); |