Non-standard helpers

Functions
int	uvccMSLifeCamExposureTimeSpan (uint32_t min, uint32_t max, uint32_t **list)
int	uvccExposureTimeToMsLifeCamValue (uint32_t value, uint32_t *msList, int listLength)

Detailed Description

Helper functions to handle cams that don't quite follow the UVC standard.

Function Documentation

int uvccExposureTimeToMsLifeCamValue	(	uint32_t	value,
		uint32_t *	msList,
		int	listLength
	)

Convert exposure time value reported by (UVC_GET_CUR) Microsoft LifeCam to corresponding index in array created by uvccMSLifeCamExposureTimeSpan().

Parameters

value	value from cam
msList	array from uvccMSLifeCamExposureTimeSpan()
listLength	length of list

Returns

index in list that holds the value or closest match

int uvccMSLifeCamExposureTimeSpan	(	uint32_t	min,
		uint32_t	max,
		uint32_t **	list
	)

Produces exposure time values in increasing order that can be used with Microsoft LifeCams. The array have to be freed by the caller.

Parameters

min	min value from cam
max	max value from cam
list	buffer to hold the array

Returns

length of array or < 0 on error