drivers/media/video/ivtv/ivtv-fileops.h

   1 /*
   2     file operation functions
   3     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
   4     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
   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; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef IVTV_FILEOPS_H
  22 #define IVTV_FILEOPS_H
  23
  24 /* Testing/Debugging */
  25 int ivtv_v4l2_open(struct inode *inode, struct file *filp);
  26 ssize_t ivtv_v4l2_read(struct file *filp, char __user *buf, size_t count,
  27                       loff_t * pos);
  28 ssize_t ivtv_v4l2_write(struct file *filp, const char __user *buf, size_t count,
  29                        loff_t * pos);
  30 int ivtv_v4l2_close(struct inode *inode, struct file *filp);
  31 unsigned int ivtv_v4l2_enc_poll(struct file *filp, poll_table * wait);
  32 unsigned int ivtv_v4l2_dec_poll(struct file *filp, poll_table * wait);
  33 int ivtv_start_capture(struct ivtv_open_id *id);
  34 void ivtv_stop_capture(struct ivtv_open_id *id, int gop_end);
  35 int ivtv_start_decoding(struct ivtv_open_id *id, int speed);
  36 void ivtv_mute(struct ivtv *itv);
  37 void ivtv_unmute(struct ivtv *itv);
  38
  39 /* Utilities */
  40
  41 /* Try to claim a stream for the filehandle. Return 0 on success,
  42    -EBUSY if stream already claimed. Once a stream is claimed, it
  43    remains claimed until the associated filehandle is closed. */
  44 int ivtv_claim_stream(struct ivtv_open_id *id, int type);
  45
  46 /* Release a previously claimed stream. */
  47 void ivtv_release_stream(struct ivtv_stream *s);
  48
  49 #endif