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35 lines
1.4 KiB
35 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* |
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* Copyright (C) 2005 Mike Isely <[email protected]> |
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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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