function varargout = vfm(varargin)
% VFM Perform frame grabbing from any Video for Windows source
% The function wraps a number of sub-functions. These are parameterised
% in the first paramter. Invocation of a sub-function, say 'grab',
% is of the form:
% vfw('grab', ...parameters...)
% VFM('grab'?, framecount?)
% Grabs framecount frames. framecount defaults to 1
% Returns M x N x 3 x framecount array of uint8, where M and N are the
% height and width respectively. Images are in RGB format.
% VFM('preview'?, bPreview?)
% Switches preview mode on or off, according to the boolean value bPreview.
% bPreview defaults to 1.
% VFM('show'?, bShow?)
% Shows or hides the capture window according to the value of the boolean, bShow.
% The window is displayed if and only if bShow is 1. bShow defaults to 1.
% Displays the source configuration dialog, if available for the current driver.
% Displays the format configuration dialog, if available for the current driver.
% Displays the display configuration dialog, if available for the current driver.
% VFM('drivername', index)
% Returns the name of a system driver for the given index. index must be in the
% the range 1-10. If a driver exists for that index, a string, representing the
% name of the driver is returned.
% VFM('setdriver', index)
% Sets the driver according to the index. index must be in the range 1-10. If
% a driver does not exist for the given index, a warning is issued.
% Farzad Pezeshkpour,
% School of Information Systems,
% University of East Anglia
% Revision: 0.1 Date: 1998/12/16
error('Missing MEX-file VFM.DLL');