1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <uapi/sound/usb_stream.h>
7 #define USB_STREAM_NURBS 4
8 #define USB_STREAM_URBDEPTH 4
10 struct usb_stream_kernel {
17 struct urb *inurb[USB_STREAM_NURBS];
18 struct urb *idle_inurb;
19 struct urb *completed_inurb;
20 struct urb *outurb[USB_STREAM_NURBS];
21 struct urb *idle_outurb;
22 struct urb *completed_outurb;
25 int iso_frame_balance;
27 wait_queue_head_t sleep;
30 unsigned out_phase_peeked;
34 struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
35 struct usb_device *dev,
36 unsigned in_endpoint, unsigned out_endpoint,
37 unsigned sample_rate, unsigned use_packsize,
38 unsigned period_frames, unsigned frame_size);
39 void usb_stream_free(struct usb_stream_kernel *);
40 int usb_stream_start(struct usb_stream_kernel *);
41 void usb_stream_stop(struct usb_stream_kernel *);
43 #endif /* __USB_STREAM_H */