mirror of https://gitee.com/openkylin/linux.git
46 lines
1.8 KiB
C
46 lines
1.8 KiB
C
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/*
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*
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*
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* Copyright (C) 2005 Mike Isely <isely@pobox.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __PVRUSB2_STD_H
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#define __PVRUSB2_STD_H
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#include <linux/videodev2.h>
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// Convert string describing one or more video standards into a mask of V4L
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// standard bits. Return true if conversion succeeds otherwise return
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// false. String is expected to be of the form: C1-x/y;C2-a/b where C1 and
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// C2 are color system names (e.g. "PAL", "NTSC") and x, y, a, and b are
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// modulation schemes (e.g. "M", "B", "G", etc).
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int pvr2_std_str_to_id(v4l2_std_id *idPtr,const char *bufPtr,
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unsigned int bufSize);
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// Convert any arbitrary set of video standard bits into an unambiguous
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// readable string. Return value is the number of bytes consumed in the
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// buffer. The formatted string is of a form that can be parsed by our
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// sibling std_std_to_id() function.
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unsigned int pvr2_std_id_to_str(char *bufPtr, unsigned int bufSize,
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v4l2_std_id id);
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// Create an array of suitable v4l2_standard structures given a bit mask of
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// video standards to support. The array is allocated from the heap, and
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// the number of elements is returned in the first argument.
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struct v4l2_standard *pvr2_std_create_enum(unsigned int *countptr,
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v4l2_std_id id);
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// Return mask of which video standard bits are valid
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v4l2_std_id pvr2_std_get_usable(void);
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#endif /* __PVRUSB2_STD_H */
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