/* * tm6000-buf.c - driver for TM5600/TM6000/TM6010 USB video capture devices * * Copyright (C) 2006-2007 Mauro Carvalho Chehab <mchehab@infradead.org> * * 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; };