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endpoint.h
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1 #ifndef __USBAUDIO_ENDPOINT_H
2 #define __USBAUDIO_ENDPOINT_H
3 
4 #define SND_USB_ENDPOINT_TYPE_DATA 0
5 #define SND_USB_ENDPOINT_TYPE_SYNC 1
6 
7 struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip,
8  struct usb_host_interface *alts,
9  int ep_num, int direction, int type);
10 
11 int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep,
12  snd_pcm_format_t pcm_format,
13  unsigned int channels,
14  unsigned int period_bytes,
15  unsigned int rate,
16  struct audioformat *fmt,
17  struct snd_usb_endpoint *sync_ep);
18 
19 int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, int can_sleep);
20 void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep,
21  int force, int can_sleep, int wait);
22 void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
23 int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
24 int snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep);
25 void snd_usb_endpoint_free(struct list_head *head);
26 
27 int snd_usb_endpoint_implict_feedback_sink(struct snd_usb_endpoint *ep);
28 int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep);
29 
30 void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep,
31  struct snd_usb_endpoint *sender,
32  const struct urb *urb);
33 
34 #endif /* __USBAUDIO_ENDPOINT_H */
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