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CHIP-linux-l...
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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 990 B
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  1. #ifndef __USB_STREAM_H
    2. 

  2. #define __USB_STREAM_H
    3. 

  3. 

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

  5. 

  6. #define USB_STREAM_NURBS 4
    7. 

  7. #define USB_STREAM_URBDEPTH 4
    8. 

  8. 

  9. struct usb_stream_kernel {
    10. 

  10. 	struct usb_stream *s;
    11. 

  11. 

  12. 	void *write_page;
    13. 

  13. 

  14. 	unsigned n_o_ps;
    15. 

  15. 

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

  17. 	struct urb *idle_inurb;
    18. 

  18. 	struct urb *completed_inurb;
    19. 

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

  20. 	struct urb *idle_outurb;
    21. 

  21. 	struct urb *completed_outurb;
    22. 

  22. 	struct urb *i_urb;
    23. 

  23. 

  24. 	int iso_frame_balance;
    25. 

  25. 

  26. 	wait_queue_head_t sleep;
    27. 

  27. 

  28. 	unsigned out_phase;
    29. 

  29. 	unsigned out_phase_peeked;
    30. 

  30. 	unsigned freqn;
    31. 

  31. };
    32. 

  32. 

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

  34. 				  struct usb_device *dev,
    35. 

  35. 				  unsigned in_endpoint, unsigned out_endpoint,
    36. 

  36. 				  unsigned sample_rate, unsigned use_packsize,
    37. 

  37. 				  unsigned period_frames, unsigned frame_size);
    38. 

  38. void usb_stream_free(struct usb_stream_kernel *);
    39. 

  39. int usb_stream_start(struct usb_stream_kernel *);
    40. 

  40. void usb_stream_stop(struct usb_stream_kernel *);
    41. 

  41. 

  42. #endif /* __USB_STREAM_H */
    43. 

  43.