1#ifndef __USBMIXER_H 2#define __USBMIXER_H 3 4struct usb_mixer_interface { 5 struct snd_usb_audio *chip; 6 struct list_head list; 7 unsigned int ignore_ctl_error; 8 struct urb *urb; 9 /* array[MAX_ID_ELEMS], indexed by unit id */ 10 struct usb_mixer_elem_info **id_elems; 11 12 /* the usb audio specification version this interface complies to */ 13 int protocol; 14 15 /* Sound Blaster remote control stuff */ 16 const struct rc_config *rc_cfg; 17 u32 rc_code; 18 wait_queue_head_t rc_waitq; 19 struct urb *rc_urb; 20 struct usb_ctrlrequest *rc_setup_packet; 21 u8 rc_buffer[6]; 22 23 u8 audigy2nx_leds[3]; 24 u8 xonar_u1_status; 25}; 26 27#define MAX_CHANNELS 10 /* max logical channels */ 28 29struct usb_mixer_elem_info { 30 struct usb_mixer_interface *mixer; 31 struct usb_mixer_elem_info *next_id_elem; /* list of controls with same id */ 32 struct snd_ctl_elem_id *elem_id; 33 unsigned int id; 34 unsigned int control; /* CS or ICN (high byte) */ 35 unsigned int cmask; /* channel mask bitmap: 0 = master */ 36 unsigned int ch_readonly; 37 unsigned int master_readonly; 38 int channels; 39 int val_type; 40 int min, max, res; 41 int dBmin, dBmax; 42 int cached; 43 int cache_val[MAX_CHANNELS]; 44 u8 initialized; 45}; 46 47int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, 48 int ignore_error); 49void snd_usb_mixer_disconnect(struct list_head *p); 50 51void snd_usb_mixer_notify_id(struct usb_mixer_interface *mixer, int unitid); 52 53int snd_usb_mixer_set_ctl_value(struct usb_mixer_elem_info *cval, 54 int request, int validx, int value_set); 55 56#endif /* __USBMIXER_H */ 57