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function h=gabmul(f,c,p3,p4,p5)
%-*- texinfo -*-
%@deftypefn {Function} gabmul
%@verbatim
%GABMUL Apply Gabor multiplier
% Usage: h=gabmul(f,c,a);
% h=gabmul(f,c,g,a);
% h=gabmul(f,c,ga,gs,a);
%
% Input parameters:
% f : Input signal
% c : symbol of Gabor multiplier
% g : analysis/synthesis window
% ga : analysis window
% gs : synthesis window
% a : Length of time shift.
% Output parameters:
% h : Output signal
%
% GABMUL has been deprecated. Please use construct a frame multiplier
% and use FRAMEMUL instead.
%
% A call to GABMUL(f,c,ga,gs,a) can be replaced by :
%
% [Fa,Fs]=framepair('dgt',ga,gs,a,M);
% fout=framemul(f,Fa,Fs,s);
%
% Original help:
% --------------
%
% GABMUL(f,c,g,a) filters f by a Gabor multiplier determined by
% the symbol c over the rectangular time-frequency lattice determined by
% a and M, where M is deduced from the size of c. The rows of c*
% correspond to frequency, the columns to temporal sampling points. The
% window g will be used for both analysis and synthesis.
%
% GABMUL(f,c,a) does the same using an optimally concentrated, tight
% Gaussian as window function.
%
% GABMUL(f,c,ga,gs,a) does the same using the window ga for analysis
% and gs for synthesis.
%
% The adjoint operator of GABMUL(f,c,ga,gs,a) is given by
% GABMUL(f,conj(c),gs,ga,a).
%
%@end verbatim
%@strong{Url}: @url{http://ltfat.github.io/doc/deprecated/gabmul.html}
%@seealso{dgt, idgt, gabdual, gabtight}
%@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/>.
warning(['LTFAT: GABMUL has been deprecated, please use FRAMEMUL ' ...
'instead. See the help on GABMUL for more details.']);
complainif_argnonotinrange(nargin,3,5,mfilename);
M=size(c,1);
N=size(c,2);
if nargin==3
a=p3;
L=a*N;
ga=gabtight(a,M,L);
gs=ga;
end;
if nargin==4;
ga=p3;
gs=p3;
a=p4;
end;
if nargin==5;
ga=p3;
gs=p4;
a=p5;
end;
if numel(c)==1
error('Size of symbol is too small. You probably forgot to supply it.');
end;
assert_squarelat(a,M,'GABMUL',0);
% Change f to correct shape.
[f,Ls,W,wasrow,remembershape]=comp_sigreshape_pre(f,'DGT',0);
[coef,Ls]=dgt(f,ga,a,M);
if(~strcmp(class(c),'double'))
coef = cast(coef,class(c));
end
for ii=1:W
coef(:,:,ii)=coef(:,:,ii).*c;
end;
h=idgt(coef,gs,a,Ls);
% Change h to have same shape as f originally had.
h=comp_sigreshape_post(h,Ls,wasrow,remembershape);
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