libexplain/buffer/v4l2_standard.h File Reference

#include <libexplain/string_buffer.h>

Go to the source code of this file.

Functions
void	explain_buffer_v4l2_standard (explain_string_buffer_t *sb, const struct v4l2_standard *data, int extra)
int	explain_v4l2_get_nstandards (int fildes)

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Function Documentation

void explain_buffer_v4l2_standard	(	explain_string_buffer_t *	sb,
		const struct v4l2_standard *	data,
		int	extra
	)

The explain_buffer_v4l2_standard function may be used to print a representation of a v4l2_standard structure.

Parameters:

sb	The string buffer to print into.
data	The v4l2_standard structure to be printed.
extra	whether or not to also print the returned value fields

int explain_v4l2_get_nstandards

(

int

fildes

)

The explain_v4l2_get_nstandards function is used to obtain the number of output video standards supported by the device.

Parameters:

fildes

The file descriptor of the open device.

Returns:

>0 for the number of standards, =0 when zero standards are supported, <0 for unable to determine number of supported standards