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tm6000-usb-isoc.h
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1 /*
2  * tm6000-buf.c - driver for TM5600/TM6000/TM6010 USB video capture devices
3  *
4  * Copyright (C) 2006-2007 Mauro Carvalho Chehab <[email protected]>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation version 2
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18  */
19 
20 #include <linux/videodev2.h>
21 
22 #define TM6000_URB_MSG_LEN 180
23 
24 struct usb_isoc_ctl {
25  /* max packet size of isoc transaction */
27 
28  /* number of allocated urbs */
29  int num_bufs;
30 
31  /* urb for isoc transfers */
32  struct urb **urb;
33 
34  /* transfer buffers for isoc transfer */
36 
37  /* Last buffer command and region */
39  int pos, size, pktsize;
40 
41  /* Last field: ODD or EVEN? */
42  int vfield, field;
43 
44  /* Stores incomplete commands */
47 
48  /* Stores already requested buffers */
49  struct tm6000_buffer *buf;
50 };