tm6000-usb-isoc.h

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/*
 *  tm6000-buf.c - driver for TM5600/TM6000/TM6010 USB video capture devices
 *
 *  Copyright (C) 2006-2007 Mauro Carvalho Chehab <[email protected]>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation version 2
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/videodev2.h>

#define TM6000_URB_MSG_LEN 180

struct usb_isoc_ctl {
        /* max packet size of isoc transaction */
    int             max_pkt_size;

        /* number of allocated urbs */
    int             num_bufs;

        /* urb for isoc transfers */
    struct urb          **urb;

        /* transfer buffers for isoc transfer */
    char                **transfer_buffer;

        /* Last buffer command and region */
    u8              cmd;
    int             pos, size, pktsize;

        /* Last field: ODD or EVEN? */
    int             vfield, field;

        /* Stores incomplete commands */
    u32             tmp_buf;
    int             tmp_buf_len;

        /* Stores already requested buffers */
    struct tm6000_buffer        *buf;
};