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). 16 int 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. 23 unsigned 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. 29 struct 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 33 v4l2_std_id pvr2_std_get_usable(void); 34 35 #endif /* __PVRUSB2_STD_H */