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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;
- struct usb_device *dev;
- void *write_page;
- unsigned int 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 int out_phase;
- unsigned int out_phase_peeked;
- unsigned int freqn;
- };
- struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
- struct usb_device *dev,
- unsigned int in_endpoint,
- unsigned int out_endpoint,
- unsigned int sample_rate,
- unsigned int use_packsize,
- unsigned int period_frames,
- unsigned int frame_size);
- void usb_stream_free(struct usb_stream_kernel *sk);
- int usb_stream_start(struct usb_stream_kernel *sk);
- void usb_stream_stop(struct usb_stream_kernel *sk);
- #endif /* __USB_STREAM_H */
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