[alsa-devel] Decibel range / value from snd_hctl_elem_t
Hello list
I'm stuck with the hctl interface. What is the best way to get 1. the decibel range from a snd_hctl_elem_t 2. the decibel value from a snd_hctl_elem_t
In the "Simple Mixer Interface" there are snd_mixer_selem_get_playback_dB, snd_mixer_selem_get_capture_dB, snd_mixer_selem_get_playback_dB_range and snd_mixer_selem_get_capture_dB_range
But I can't find anything like that in the "High level Control Interface".
Possibly related: What does TLV stand for? http://de.wikipedia.org/wiki/Type-Length-Value ?
Sebastian H.
Sebastian H. wrote:
I'm stuck with the hctl interface. What is the best way to get
- the decibel range from a snd_hctl_elem_t
- the decibel value from a snd_hctl_elem_t
The hctl stuff is just a thin wrapper over the ctl stuff, so call snd_hctl_ctl and snd_hctl_elem_get_id, then snd_ctl_*dB*.
Possibly related: What does TLV stand for? http://de.wikipedia.org/wiki/Type-Length-Value ?
Yes; but you should let alsa-lib parse it.
Regards, Clemens
Am 29.04.2011 08:15, schrieb Clemens Ladisch:
Sebastian H. wrote:
I'm stuck with the hctl interface. What is the best way to get
- the decibel range from a snd_hctl_elem_t
- the decibel value from a snd_hctl_elem_t
The hctl stuff is just a thin wrapper over the ctl stuff, so call snd_hctl_ctl and snd_hctl_elem_get_id, then snd_ctl_*dB*.
Ok, that works. Thank you Clemens.
participants (2)
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Clemens Ladisch -
Sebastian H.