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

   1 /*
   2  *
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   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
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20 #ifndef __PVRUSB2_STD_H
  21 #define __PVRUSB2_STD_H
  22
  23 #include <linux/videodev2.h>
  24
  25 // Convert string describing one or more video standards into a mask of V4L
  26 // standard bits.  Return true if conversion succeeds otherwise return
  27 // false.  String is expected to be of the form: C1-x/y;C2-a/b where C1 and
  28 // C2 are color system names (e.g. "PAL", "NTSC") and x, y, a, and b are
  29 // modulation schemes (e.g. "M", "B", "G", etc).
  30 int pvr2_std_str_to_id(v4l2_std_id *idPtr,const char *bufPtr,
  31                        unsigned int bufSize);
  32
  33 // Convert any arbitrary set of video standard bits into an unambiguous
  34 // readable string.  Return value is the number of bytes consumed in the
  35 // buffer.  The formatted string is of a form that can be parsed by our
  36 // sibling std_std_to_id() function.
  37 unsigned int pvr2_std_id_to_str(char *bufPtr, unsigned int bufSize,
  38                                 v4l2_std_id id);
  39
  40 // Create an array of suitable v4l2_standard structures given a bit mask of
  41 // video standards to support.  The array is allocated from the heap, and
  42 // the number of elements is returned in the first argument.
  43 struct v4l2_standard *pvr2_std_create_enum(unsigned int *countptr,
  44                                            v4l2_std_id id);
  45
  46 // Return mask of which video standard bits are valid
  47 v4l2_std_id pvr2_std_get_usable(void);
  48
  49 #endif /* __PVRUSB2_STD_H */
  50
  51 /*
  52   Stuff for Emacs to see, in order to encourage consistent editing style:
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  59   */