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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __USB_STREAM_H
#define __USB_STREAM_H
#include <uapi/sound/usb_stream.h>
#define USB_STREAM_NURBS 4
#define USB_STREAM_URBDEPTH 4
struct usb_stream_kernel {
struct usb_stream *s;
void *write_page;
unsigned n_o_ps;
struct urb *inurb[USB_STREAM_NURBS];
struct urb *idle_inurb;
struct urb *completed_inurb;
struct urb *outurb[USB_STREAM_NURBS];
struct urb *idle_outurb;
struct urb *completed_outurb;
struct urb *i_urb;
int iso_frame_balance;
wait_queue_head_t sleep;
unsigned out_phase;
unsigned out_phase_peeked;
unsigned freqn;
};
struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
struct usb_device *dev,
unsigned in_endpoint, unsigned out_endpoint,
unsigned sample_rate, unsigned use_packsize,
unsigned period_frames, unsigned frame_size);
void usb_stream_free(struct usb_stream_kernel *);
int usb_stream_start(struct usb_stream_kernel *);
void usb_stream_stop(struct usb_stream_kernel *);
#endif /* __USB_STREAM_H */
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