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function output = base64decode(varargin)
%
% output = base64decode(input)
%
% Decoding a Base64-encoded byte-stream to recover the original data
% This function depends on JVM in MATLAB or, can optionally use the ZMat
% toolbox (http://github.com/NeuroJSON/zmat)
%
% Copyright (c) 2012, Kota Yamaguchi
% URL: https://www.mathworks.com/matlabcentral/fileexchange/39526-byte-encoding-utilities
%
% Modified by: Qianqian Fang (q.fang <at> neu.edu)
%
% input:
% input: a base64-encoded string
%
% output:
% output: the decoded binary byte-stream as a uint8 vector
%
% examples:
% bytes=base64encode('Test JSONLab');
% orig=char(base64decode(bytes))
%
% license:
% BSD or GPL version 3, see LICENSE_{BSD,GPLv3}.txt files for details
%
% -- this function is part of JSONLab toolbox (http://iso2mesh.sf.net/cgi-bin/index.cgi?jsonlab)
%
if (nargin == 0)
error('you must provide at least 1 input');
end
if (exist('zmat', 'file') == 2 || exist('zmat', 'file') == 3)
output = zmat(varargin{1}, 0, 'base64');
return
elseif (isoctavemesh)
error('You must install the ZMat toolbox (http://github.com/NeuroJSON/zmat) to use this function in Octave');
end
error(javachk('jvm'));
if (ischar(varargin{1}))
varargin{1} = uint8(varargin{1});
end
input = typecast(varargin{1}(:)', 'uint8');
output = typecast(org.apache.commons.codec.binary.Base64.decodeBase64(input), 'uint8')';
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