diff options
| -rw-r--r-- | include/tinyalsa/mixer.h | 2 | ||||
| -rw-r--r-- | src/mixer.c | 16 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/tinyalsa/mixer.h b/include/tinyalsa/mixer.h index fb862f3..a54b5c1 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); +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); struct mixer_ctl *mixer_get_ctl_by_name(struct mixer *mixer, const char *name); diff --git a/src/mixer.c b/src/mixer.c index 5fed4a8..4bb1756 100644 --- a/src/mixer.c +++ b/src/mixer.c @@ -195,6 +195,22 @@ unsigned int mixer_get_num_ctls(const struct mixer *mixer) } /** 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. + * @param id The control's id in the given mixer. + * @returns A handle to the mixer control. + * @ingroup libtinyalsa-mixer + */ +const struct mixer_ctl *mixer_get_ctl_const(const struct mixer *mixer, unsigned int id) +{ + if (mixer && (id < mixer->count)) + return mixer->ctl + id; + + return NULL; +} + +/** Gets a mixer control handle, by the mixer control's id. + * For const access, see @ref mixer_get_ctl_const * @param mixer An initialized mixer handle. * @param id The control's id in the given mixer. * @returns A handle to the mixer control. |