Query supported framegrabbers.
The operator query_framegrabber returns the names of the framegrabbers supported by HORUS on the current computer architecture. If a framegrabber turns up on this list it is not necessarily available at run time. This is only checked when trying to open a frame grabber via the operator open_framegrabber.
The result of the operator query_framegrabber depends on the type of machine (utilized computer architecture).
Names (output_control) |
string-array -> string |
Framegrabbers supported by HORUS . |
The operator query_framegrabber normally returns the value TRUE. However, if the HORUS internal initialisation of the framegrabber data structures fails, an exception is raised.
open_framegrabber, info_framegrabber