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android_kernel_...
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sound
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usb
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usx2y
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usb_stream.h

usb_stream.h 1.1 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. #ifndef __USB_STREAM_H
    3. 

  3. #define __USB_STREAM_H
    4. 

  4. 

  5. #include <uapi/sound/usb_stream.h>
    6. 

  6. 

  7. #define USB_STREAM_NURBS 4
    8. 

  8. #define USB_STREAM_URBDEPTH 4
    9. 

  9. 

  10. struct usb_stream_kernel {
    11. 

  11. 	struct usb_stream *s;
    12. 

  12. 

  13. 	void *write_page;
    14. 

  14. 

  15. 	unsigned int n_o_ps;
    16. 

  16. 

  17. 	struct urb *inurb[USB_STREAM_NURBS];
    18. 

  18. 	struct urb *idle_inurb;
    19. 

  19. 	struct urb *completed_inurb;
    20. 

  20. 	struct urb *outurb[USB_STREAM_NURBS];
    21. 

  21. 	struct urb *idle_outurb;
    22. 

  22. 	struct urb *completed_outurb;
    23. 

  23. 	struct urb *i_urb;
    24. 

  24. 

  25. 	int iso_frame_balance;
    26. 

  26. 

  27. 	wait_queue_head_t sleep;
    28. 

  28. 

  29. 	unsigned int out_phase;
    30. 

  30. 	unsigned int out_phase_peeked;
    31. 

  31. 	unsigned int freqn;
    32. 

  32. };
    33. 

  33. 

  34. struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
    35. 

  35. 				  struct usb_device *dev,
    36. 

  36. 				  unsigned int in_endpoint,
    37. 

  37. 				  unsigned int out_endpoint,
    38. 

  38. 				  unsigned int sample_rate,
    39. 

  39. 				  unsigned int use_packsize,
    40. 

  40. 				  unsigned int period_frames,
    41. 

  41. 				  unsigned int frame_size);
    42. 

  42. void usb_stream_free(struct usb_stream_kernel *sk);
    43. 

  43. int usb_stream_start(struct usb_stream_kernel *sk);
    44. 

  44. void usb_stream_stop(struct usb_stream_kernel *sk);
    45. 

  45. 

  46. #endif /* __USB_STREAM_H */
    47.