2019-06-03 13:44:51 +08:00
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/* SPDX-License-Identifier: GPL-2.0-only */
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2006-06-27 07:58:46 +08:00
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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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#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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