table of contents
| SND_CTL_MAKE_VIRTUAL(9) | Control/Mixer API | SND_CTL_MAKE_VIRTUAL(9) |
NAME¶
snd_ctl_make_virtual_master - Create a virtual master control
SYNOPSIS¶
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.
COPYRIGHT¶
| May 2024 | Kernel Hackers Manual 2.6. |