diff options
| -rw-r--r-- | include/tinyalsa/mixer.h | 2 | ||||
| -rw-r--r-- | src/mixer.c | 24 |
2 files changed, 26 insertions, 0 deletions
diff --git a/include/tinyalsa/mixer.h b/include/tinyalsa/mixer.h index a54b5c1..f743f6e 100644 --- a/include/tinyalsa/mixer.h +++ b/include/tinyalsa/mixer.h @@ -73,6 +73,8 @@ const char *mixer_get_name(const struct mixer *mixer); unsigned int mixer_get_num_ctls(const struct mixer *mixer); +unsigned int mixer_get_num_ctls_by_name(const struct mixer *mixer, const char *name); + const struct mixer_ctl *mixer_get_ctl_const(const struct mixer *mixer, unsigned int id); struct mixer_ctl *mixer_get_ctl(struct mixer *mixer, unsigned int id); diff --git a/src/mixer.c b/src/mixer.c index 4bb1756..9e661c5 100644 --- a/src/mixer.c +++ b/src/mixer.c @@ -194,6 +194,30 @@ unsigned int mixer_get_num_ctls(const struct mixer *mixer) return mixer->count; } +/** Gets the number of mixer controls, that go by a specified name, for a given mixer. + * @param mixer An initialized mixer handle. + * @param name The name of the mixer control + * @returns The number of mixer controls, specified by @p name, for the given mixer. + * @ingroup libtinyalsa-mixer + */ +unsigned int mixer_get_num_ctls_by_name(const struct mixer *mixer, const char *name) +{ + unsigned int n; + unsigned int count = 0; + struct mixer_ctl *ctl; + + if (!mixer) + return 0; + + ctl = mixer->ctl; + + for (n = 0; n < mixer->count; n++) + if (!strcmp(name, (char*) ctl[n].info.id.name)) + count++; + + return count; +} + /** Gets a mixer control handle, by the mixer control's id. * For non-const access, see @ref mixer_get_ctl * @param mixer An initialized mixer handle. |