1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * 4 * Copyright (C) 2005 Mike Isely <isely@pobox.com> 5 */ 6#ifndef __PVRUSB2_STD_H 7#define __PVRUSB2_STD_H 8 9#include <linux/videodev2.h> 10 11// Convert string describing one or more video standards into a mask of V4L 12// standard bits. Return true if conversion succeeds otherwise return 13// false. String is expected to be of the form: C1-x/y;C2-a/b where C1 and 14// C2 are color system names (e.g. "PAL", "NTSC") and x, y, a, and b are 15// modulation schemes (e.g. "M", "B", "G", etc). 16int pvr2_std_str_to_id(v4l2_std_id *idPtr,const char *bufPtr, 17 unsigned int bufSize); 18 19// Convert any arbitrary set of video standard bits into an unambiguous 20// readable string. Return value is the number of bytes consumed in the 21// buffer. The formatted string is of a form that can be parsed by our 22// sibling std_std_to_id() function. 23unsigned int pvr2_std_id_to_str(char *bufPtr, unsigned int bufSize, 24 v4l2_std_id id); 25 26// Create an array of suitable v4l2_standard structures given a bit mask of 27// video standards to support. The array is allocated from the heap, and 28// the number of elements is returned in the first argument. 29struct v4l2_standard *pvr2_std_create_enum(unsigned int *countptr, 30 v4l2_std_id id); 31 32// Return mask of which video standard bits are valid 33v4l2_std_id pvr2_std_get_usable(void); 34 35#endif /* __PVRUSB2_STD_H */ 36