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snd_ctl_make_virtual_master
Langue: en
Version: October 2010 (fedora - 01/12/10)
Section: 9 (Appels noyau Linux)
NAME
snd_ctl_make_virtual_master - Create a virtual master controlSYNOPSIS
- struct snd_kcontrol * snd_ctl_make_virtual_master(char * name, const unsigned int * tlv);
ARGUMENTS
name
- name string of the control element to create
tlv
- optional TLV int array for dB information
DESCRIPTION
Creates a virtual matster control with the given name string. Returns the created control element, or NULL for errors (ENOMEM).
After creating a vmaster element, you can add the slave controls via snd_ctl_add_slave or snd_ctl_add_slave_uncached.
The optional argument tlv can be used to specify the TLV information for dB scale of the master control. It should be a single element with #SNDRV_CTL_TLVT_DB_SCALE, #SNDRV_CTL_TLV_DB_MINMAX or #SNDRV_CTL_TLVT_DB_MINMAX_MUTE type, and should be the max 0dB.
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