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https://github.com/alsa-project/alsa-utils
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34bb514b5f
Instead of mapping the raw volume values linearly to the screen, use a mapping where the bar height is proportional to the audible volume, i.e., where the amplitude is the cube of the bar height. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
20 lines
608 B
C
20 lines
608 B
C
#ifndef VOLUME_MAPPING_H_INCLUDED
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#define VOLUME_MAPPING_H_INCLUDED
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#include <alsa/asoundlib.h>
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double get_normalized_playback_volume(snd_mixer_elem_t *elem,
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snd_mixer_selem_channel_id_t channel);
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double get_normalized_capture_volume(snd_mixer_elem_t *elem,
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snd_mixer_selem_channel_id_t channel);
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int set_normalized_playback_volume(snd_mixer_elem_t *elem,
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snd_mixer_selem_channel_id_t channel,
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double volume,
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int dir);
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int set_normalized_capture_volume(snd_mixer_elem_t *elem,
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snd_mixer_selem_channel_id_t channel,
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double volume,
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int dir);
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#endif
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