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kernel/linux-rt-4.4.41/drivers/media/usb/pvrusb2/pvrusb2-std.h 1.99 KB
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  /*
   *
   *
   *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   *
   *  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; either version 2 of the License
   *
   *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   *
   */
  #ifndef __PVRUSB2_STD_H
  #define __PVRUSB2_STD_H
  
  #include <linux/videodev2.h>
  
  // Convert string describing one or more video standards into a mask of V4L
  // standard bits.  Return true if conversion succeeds otherwise return
  // false.  String is expected to be of the form: C1-x/y;C2-a/b where C1 and
  // C2 are color system names (e.g. "PAL", "NTSC") and x, y, a, and b are
  // modulation schemes (e.g. "M", "B", "G", etc).
  int pvr2_std_str_to_id(v4l2_std_id *idPtr,const char *bufPtr,
  		       unsigned int bufSize);
  
  // Convert any arbitrary set of video standard bits into an unambiguous
  // readable string.  Return value is the number of bytes consumed in the
  // buffer.  The formatted string is of a form that can be parsed by our
  // sibling std_std_to_id() function.
  unsigned int pvr2_std_id_to_str(char *bufPtr, unsigned int bufSize,
  				v4l2_std_id id);
  
  // Create an array of suitable v4l2_standard structures given a bit mask of
  // video standards to support.  The array is allocated from the heap, and
  // the number of elements is returned in the first argument.
  struct v4l2_standard *pvr2_std_create_enum(unsigned int *countptr,
  					   v4l2_std_id id);
  
  // Return mask of which video standard bits are valid
  v4l2_std_id pvr2_std_get_usable(void);
  
  #endif /* __PVRUSB2_STD_H */