diff options
| author | Richard Fitzgerald <rf@opensource.wolfsonmicro.com> | 2014-09-09 17:14:09 +0100 |
|---|---|---|
| committer | Richard Fitzgerald <rf@opensource.wolfsonmicro.com> | 2016-12-02 16:39:38 +0000 |
| commit | fd3290357ea02f871a10eec208697fb97d578fe6 (patch) | |
| tree | b35ed3a9c05cd0e14d51e28b2cd7c01b2f76d296 /include | |
| parent | 15e6231a1b3455fff50c9912f227efae91666d1f (diff) | |
mixer: add ability to update control list with new controls
New controls could appear during runtime, for example if a
new firmware is downloaded to a DSP. Since ALSA drivers are
not supposed to delete or renumber existing controls we can
assume that any new controls will be after any controls we
already know about. We can use this to enable extending our
current list of controls, which is more efficient than
closing the mixer session and recreating it.
Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/tinyalsa/mixer.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/tinyalsa/mixer.h b/include/tinyalsa/mixer.h index f743f6e..d82d4b1 100644 --- a/include/tinyalsa/mixer.h +++ b/include/tinyalsa/mixer.h @@ -69,6 +69,8 @@ struct mixer *mixer_open(unsigned int card); void mixer_close(struct mixer *mixer); +int mixer_add_new_ctls(struct mixer *mixer); + const char *mixer_get_name(const struct mixer *mixer); unsigned int mixer_get_num_ctls(const struct mixer *mixer); |