SOUND_MIXER_LOUD 848 include/uapi/linux/soundcard.h #define SOUND_MASK_LOUD (1 << SOUND_MIXER_LOUD) SOUND_MIXER_LOUD 872 include/uapi/linux/soundcard.h #define SOUND_MIXER_READ_LOUD MIXER_READ(SOUND_MIXER_LOUD) SOUND_MIXER_LOUD 902 include/uapi/linux/soundcard.h #define SOUND_MIXER_WRITE_LOUD MIXER_WRITE(SOUND_MIXER_LOUD)