Chapter 3. Control/Mixer API

Table of Contents

General Control Interface
AC97 Codec API
Virtual Master Control API

General Control Interface

snd_ctl_notify — Send notification to user-space for a control change
snd_ctl_new1 — create a control instance from the template
snd_ctl_free_one — release the control instance
snd_ctl_add — add the control instance to the card
snd_ctl_replace — replace the control instance of the card
snd_ctl_remove — remove the control from the card and release it
snd_ctl_remove_id — remove the control of the given id and release it
snd_ctl_activate_id — activate/inactivate the control of the given id
snd_ctl_rename_id — replace the id of a control on the card
snd_ctl_find_numid — find the control instance with the given number-id
snd_ctl_find_id — find the control instance with the given id
snd_ctl_register_ioctl — register the device-specific control-ioctls
snd_ctl_register_ioctl_compat — register the device-specific 32bit compat control-ioctls
snd_ctl_unregister_ioctl — de-register the device-specific control-ioctls
snd_ctl_unregister_ioctl_compat — de-register the device-specific compat 32bit control-ioctls
snd_ctl_boolean_mono_info — Helper function for a standard boolean info callback with a mono channel
snd_ctl_boolean_stereo_info — Helper function for a standard boolean info callback with stereo two channels
snd_ctl_enum_info — fills the info structure for an enumerated control