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tinymix: support setting of multiple control values

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This allows stereo controls to be set with different
values for left and right.
This commit is contained in:
Simon Wilson
2012-09-17 13:05:06 -07:00
parent 93e7b67301
commit a5baefd1ab
1 changed files with 33 additions and 12 deletions
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tinymix.c
+33 -12
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@@ -35,7 +35,7 @@ static void tinymix_list_controls(struct mixer *mixer);
static void tinymix_detail_control(struct mixer *mixer, unsigned int id,
int print_all);
static void tinymix_set_value(struct mixer *mixer, unsigned int id,
char *value);
char **values, unsigned int num_values);
static void tinymix_print_enum(struct mixer_ctl *ctl, int print_all);
int main(int argc, char **argv)
@@ -64,8 +64,8 @@ int main(int argc, char **argv)
tinymix_list_controls(mixer);
else if (argc == 2)
tinymix_detail_control(mixer, atoi(argv[1]), 1);
else if (argc == 3)
tinymix_set_value(mixer, atoi(argv[1]), argv[2]);
else if (argc >= 3)
tinymix_set_value(mixer, atoi(argv[1]), &argv[2], argc - 2);
else
printf("Usage: tinymix [-D card] [control id] [value to set]\n");
@@ -169,29 +169,50 @@ static void tinymix_detail_control(struct mixer *mixer, unsigned int id,
}
static void tinymix_set_value(struct mixer *mixer, unsigned int id,
char *string)
char **values, unsigned int num_values)
{
struct mixer_ctl *ctl;
enum mixer_ctl_type type;
unsigned int num_values;
unsigned int num_ctl_values;
unsigned int i;
ctl = mixer_get_ctl(mixer, id);
type = mixer_ctl_get_type(ctl);
num_values = mixer_ctl_get_num_values(ctl);
num_ctl_values = mixer_ctl_get_num_values(ctl);
if (isdigit(string[0])) {
int value = atoi(string);
if (isdigit(values[0][0])) {
if (num_values == 1) {
/* Set all values the same */
int value = atoi(values[0]);
for (i = 0; i < num_values; i++) {
if (mixer_ctl_set_value(ctl, i, value)) {
fprintf(stderr, "Error: invalid value\n");
for (i = 0; i < num_ctl_values; i++) {
if (mixer_ctl_set_value(ctl, i, value)) {
fprintf(stderr, "Error: invalid value\n");
return;
}
}
} else {
/* Set multiple values */
if (num_values > num_ctl_values) {
fprintf(stderr,
"Error: %d values given, but control only takes %d\n",
num_values, num_ctl_values);
return;
}
for (i = 0; i < num_values; i++) {
if (mixer_ctl_set_value(ctl, i, atoi(values[i]))) {
fprintf(stderr, "Error: invalid value for index %d\n", i);
return;
}
}
}
} else {
if (type == MIXER_CTL_TYPE_ENUM) {
if (mixer_ctl_set_enum_by_string(ctl, string))
if (num_values != 1) {
fprintf(stderr, "Enclose strings in quotes and try again\n");
return;
}
if (mixer_ctl_set_enum_by_string(ctl, values[0]))
fprintf(stderr, "Error: invalid enum value\n");
} else {
fprintf(stderr, "Error: only enum types can be set with strings\n");