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function f=comp_iuwfbt(c,wtNodes,nodesUps,rangeLoc,rangeOut,scaling)
%-*- texinfo -*-
%@deftypefn {Function} comp_iuwfbt
%@verbatim
%COMP_IUWFBT Compute Inverse Undecimated Wavelet Filter-Bank Tree
% Usage: f=comp_iuwfbt(c,wtNodes,nodesUps,rangeLoc,rangeOut)
%
% Input parameters:
% c : Coefficient array of dim. L*M*W.
% wtNodes : Filterbank tree nodes (elementary filterbanks) in
% BF order. Length nodeNo cell array of structures.
% nodesUps : Filters upsampling factor of each node. Array of
% length nodeNo.
% rangeLoc : Idxs of each node inputs. Length nodeNo
% cell array of vectors.
% rangeOut : Input subband idxs of each node inputs.
%
% Output parameters:
% f : Reconstructed data L*W array.
%
%@end verbatim
%@strong{Url}: @url{http://ltfat.github.io/doc/comp/comp_iuwfbt.html}
%@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/>.
L = size(c,1);
W = size(c,3);
catmp = [];
ca = [];
% For each node in tree in the BF order...
for jj=1:length(wtNodes)
% Node filters subs. factors
a = wtNodes{jj}.a;
% Optionally scale the filters
g = comp_filterbankscale(wtNodes{jj}.g(:),a(:),scaling);
% Node filters to a matrix
gMat = cell2mat(cellfun(@(gEl) gEl.h(:),g','UniformOutput',0));
% Node filters initial skips
gOffset = cellfun(@(gEl) gEl.offset,wtNodes{jj}.g);
% Zero index position of the upsampled filters.
offset = nodesUps(jj).*(gOffset) ;%- nodesUps(jj);
% Re-allocate catmp if the filtNo differs from the one used in previous
% iteration.
filtNo = size(gMat,2);
if(filtNo~=size(catmp,2))
catmp = zeros(L,filtNo,W,class(c));
end
% Read from input subbands
catmp(:,rangeLoc{jj},:) = c(:,rangeOut{jj},:);
diffRange = 1:filtNo;
diffRange(rangeLoc{jj}) = [];
% Read from intermediate outputs
if(~isempty(diffRange))
catmp(:,diffRange(end:-1:1),:) = ca(:,1:numel(diffRange),:);
end
%Run filterbank
catmp = comp_iatrousfilterbank_td(catmp,gMat,nodesUps(jj),offset);
%Save intermediate output
ca = horzcat(ca(:,numel(diffRange)+1:end,:),reshape(catmp,size(catmp,1),1,size(catmp,2)));
end
f = catmp;
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