function [f]=comp_isepdgt(coef,g,L,a,M,phasetype)
%-*- texinfo -*-
%@deftypefn {Function} comp_isepdgt
%@verbatim
%COMP_ISEPDGT  Separable IDGT.
%   Usage:  f=comp_isepdgt(c,g,L,a,M);
%       
%   This is a computational routine. Do not call it directly.
%
%   Input must be in the M x N x W format.
%
%@end verbatim
%@strong{Url}: @url{http://ltfat.github.io/doc/comp/comp_isepdgt.html}
%@seealso{idgt}
%@end deftypefn

% Copyright (C) 2005-2016 Peter L. Soendergaard <peter@sonderport.dk>.
% This file is part of LTFAT version 2.3.1
%
% This program is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program.  If not, see <http://www.gnu.org/licenses/>.

%   AUTHOR : Peter L. Soendergaard.
%   TESTING: OK
%   REFERENCE: OK

Lwindow=size(g,1);

% FIXME : Calls non-comp function 
if phasetype==1
    coef=phaseunlock(coef,a);
end;

if L==Lwindow
    % Do full-window algorithm.
    % coef=reshape(coef,M,prod(size(coef))/M);

    % Get the factorization of the window.
    %gf = comp_wfac(g,a,M);      

    % Call the computational subroutine.
    f  = comp_idgt_long(coef,g,L,a,M);
else
    %coef=reshape(coef,M,prod(size(coef))/M);
    % Do filter bank algorithm.
    % Call the computational subroutine.

    f=comp_idgt_fb(coef,g,L,a,M);
end;

