drivers/media/video/pvrusb2/pvrusb2-std.h

   1 /*
   2  *
   3  *  $Id$
   4  *
   5  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License
  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 __PVRUSB2_STD_H
  22 #define __PVRUSB2_STD_H
  23
  24 #include <linux/videodev2.h>
  25
  26 // Convert string describing one or more video standards into a mask of V4L
  27 // standard bits.  Return true if conversion succeeds otherwise return
  28 // false.  String is expected to be of the form: C1-x/y;C2-a/b where C1 and
  29 // C2 are color system names (e.g. "PAL", "NTSC") and x, y, a, and b are
  30 // modulation schemes (e.g. "M", "B", "G", etc).
  31 int pvr2_std_str_to_id(v4l2_std_id *idPtr,const char *bufPtr,
  32                        unsigned int bufSize);
  33
  34 // Convert any arbitrary set of video standard bits into an unambiguous
  35 // readable string.  Return value is the number of bytes consumed in the
  36 // buffer.  The formatted string is of a form that can be parsed by our
  37 // sibling std_std_to_id() function.
  38 unsigned int pvr2_std_id_to_str(char *bufPtr, unsigned int bufSize,
  39                                 v4l2_std_id id);
  40
  41 // Create an array of suitable v4l2_standard structures given a bit mask of
  42 // video standards to support.  The array is allocated from the heap, and
  43 // the number of elements is returned in the first argument.
  44 struct v4l2_standard *pvr2_std_create_enum(unsigned int *countptr,
  45                                            v4l2_std_id id);
  46
  47 // Return mask of which video standard bits are valid
  48 v4l2_std_id pvr2_std_get_usable(void);
  49
  50 #endif /* __PVRUSB2_STD_H */
  51
  52 /*
  53   Stuff for Emacs to see, in order to encourage consistent editing style:
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  60   */