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, bool can_sleep); 20 void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep); 21 void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep); 22 int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep); 23 int snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep); 24 void snd_usb_endpoint_free(struct list_head *head); 25 26 int snd_usb_endpoint_implict_feedback_sink(struct snd_usb_endpoint *ep); 27 int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep); 28 29 void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep, 30 struct snd_usb_endpoint *sender, 31 const struct urb *urb); 32 33 #endif /* __USBAUDIO_ENDPOINT_H */ 34