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control: Add UMP device query support

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Add a function to query the next available UMP device via control
interface, just like the existing one for rawmidi.  As the UMP rawmidi
is compatible with the standard rawmidi, no extra helper for the
rawmidi_info is present.  Ditto for the preferred subdevice, too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2022-12-25 12:09:51 +01:00
parent f47763d2c1
commit 8bc10c83b1
5 changed files with 26 additions and 0 deletions
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include/control.h
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@ -417,6 +417,7 @@ int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev);
int snd_ctl_rawmidi_next_device(snd_ctl_t *ctl, int * device);
int snd_ctl_rawmidi_info(snd_ctl_t *ctl, snd_rawmidi_info_t * info);
int snd_ctl_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev);
int snd_ctl_ump_next_device(snd_ctl_t *ctl, int *device);
#endif
int snd_ctl_set_power_state(snd_ctl_t *ctl, unsigned int state);
int snd_ctl_get_power_state(snd_ctl_t *ctl, unsigned int *state);