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 */ 16 #ifndef __PVRUSB2_STD_H 17 #define __PVRUSB2_STD_H 18 19 #include <linux/videodev2.h> 20 21 // Convert string describing one or more video standards into a mask of V4L 22 // standard bits. Return true if conversion succeeds otherwise return 23 // false. String is expected to be of the form: C1-x/y;C2-a/b where C1 and 24 // C2 are color system names (e.g. "PAL", "NTSC") and x, y, a, and b are 25 // modulation schemes (e.g. "M", "B", "G", etc). 26 int pvr2_std_str_to_id(v4l2_std_id *idPtr,const char *bufPtr, 27 unsigned int bufSize); 28 29 // Convert any arbitrary set of video standard bits into an unambiguous 30 // readable string. Return value is the number of bytes consumed in the 31 // buffer. The formatted string is of a form that can be parsed by our 32 // sibling std_std_to_id() function. 33 unsigned int pvr2_std_id_to_str(char *bufPtr, unsigned int bufSize, 34 v4l2_std_id id); 35 36 // Create an array of suitable v4l2_standard structures given a bit mask of 37 // video standards to support. The array is allocated from the heap, and 38 // the number of elements is returned in the first argument. 39 struct v4l2_standard *pvr2_std_create_enum(unsigned int *countptr, 40 v4l2_std_id id); 41 42 // Return mask of which video standard bits are valid 43 v4l2_std_id pvr2_std_get_usable(void); 44 45 #endif /* __PVRUSB2_STD_H */ 46