diff options
Diffstat (limited to 'sound/usb/usx2y/usb_stream.h')
| -rw-r--r-- | sound/usb/usx2y/usb_stream.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/usb/usx2y/usb_stream.h b/sound/usb/usx2y/usb_stream.h new file mode 100644 index 000000000..73e57b341 --- /dev/null +++ b/sound/usb/usx2y/usb_stream.h @@ -0,0 +1,46 @@ +/* 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 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 */ |