1SND_CTL_MAKE_VIRTUAL(9)        Control/Mixer API       SND_CTL_MAKE_VIRTUAL(9)
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NAME

6       snd_ctl_make_virtual_master - Create a virtual master control
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SYNOPSIS

9       struct snd_kcontrol * snd_ctl_make_virtual_master(char * name,
10                                                         const unsigned int * tlv);
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ARGUMENTS

13       name
14           name string of the control element to create
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16       tlv
17           optional TLV int array for dB information
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DESCRIPTION

20       Creates a virtual matster control with the given name string. Returns
21       the created control element, or NULL for errors (ENOMEM).
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23       After creating a vmaster element, you can add the slave controls via
24       snd_ctl_add_slave or snd_ctl_add_slave_uncached.
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26       The optional argument tlv can be used to specify the TLV information
27       for dB scale of the master control. It should be a single element with
28       #SNDRV_CTL_TLVT_DB_SCALE, #SNDRV_CTL_TLV_DB_MINMAX or
29       #SNDRV_CTL_TLVT_DB_MINMAX_MUTE type, and should be the max 0dB.
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32Kernel Hackers Manual 2.6.       November 2011         SND_CTL_MAKE_VIRTUAL(9)
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