FCam::Flash::Tags Class Reference

A flash adds the tags "flash.brightness", "flash.start", "flash.duration", and "flash.peak", as described below. More...

List of all members.

Public Member Functions
	Tags (Frame)
	Extract the tags placed on a frame by a flash.
Public Attributes
float	brightness
	The brightness setting used for this firing.
int	start
	The time the flash started firing, measured as microseconds into the exposure.
int	duration
	For how many microseconds of the frame was the flash emitting light.
int	peak
	The time of peak firing activation (us after start of exposure).

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Detailed Description

A flash adds the tags "flash.brightness", "flash.start", "flash.duration", and "flash.peak", as described below.

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Member Data Documentation

int FCam::Flash::Tags::start

The time the flash started firing, measured as microseconds into the exposure.

If the flash was firing before the exposure began, this should be zero.

int FCam::Flash::Tags::duration

For how many microseconds of the frame was the flash emitting light.

int FCam::Flash::Tags::peak

The time of peak firing activation (us after start of exposure).

For flashes which emit a fairly constant level of light over some period of time this should be the center time of that plateau.