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#ifndef __USBAUDIO_ENDPOINT_H
#define __USBAUDIO_ENDPOINT_H
void snd_usb_init_substream(struct snd_usb_stream *as,
int stream,
struct audioformat *fp);
int snd_usb_init_substream_urbs(struct snd_usb_substream *subs,
unsigned int period_bytes,
unsigned int rate,
unsigned int frame_bits);
void snd_usb_release_substream_urbs(struct snd_usb_substream *subs, int force);
int snd_usb_substream_prepare(struct snd_usb_substream *subs,
struct snd_pcm_runtime *runtime);
int snd_usb_substream_playback_trigger(struct snd_pcm_substream *substream, int cmd);
int snd_usb_substream_capture_trigger(struct snd_pcm_substream *substream, int cmd);
#define SND_USB_ENDPOINT_TYPE_DATA 0
#define SND_USB_ENDPOINT_TYPE_SYNC 1
struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip,
struct usb_host_interface *alts,
int ep_num, int direction, int type);
int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep,
struct snd_pcm_hw_params *hw_params,
struct audioformat *fmt,
struct snd_usb_endpoint *sync_ep);
int snd_usb_endpoint_start(struct snd_usb_endpoint *ep);
void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep,
int force, int can_sleep, int wait);
int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
int snd_usb_endpoint_deactivate(struct snd_usb_endpoint *ep);
void snd_usb_endpoint_free(struct list_head *head);
int snd_usb_endpoint_implict_feedback_sink(struct snd_usb_endpoint *ep);
void snd_usb_handle_sync_urb(struct snd_usb_endpoint *ep,
struct snd_usb_endpoint *sender,
const struct urb *urb);
#endif /* __USBAUDIO_ENDPOINT_H */
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