Blame alsamixer/volume_mapping.h
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#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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