42 lines
1.1 KiB
Matlab
42 lines
1.1 KiB
Matlab
function output = zlibdecode(input)
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import jsonlab.*
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%ZLIBDECODE Decompress input bytes using ZLIB.
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%
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% output = zlibdecode(input)
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%
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% The function takes a compressed byte array INPUT and returns inflated
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% bytes OUTPUT. The INPUT is a result of GZIPENCODE function. The OUTPUT
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% is always an 1-by-N uint8 array. JAVA must be enabled to use the function.
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%
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% See also zlibencode typecast
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%
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% Copyright (c) 2012, Kota Yamaguchi
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% URL: https://www.mathworks.com/matlabcentral/fileexchange/39526-byte-encoding-utilities
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% License : BSD, see LICENSE_*.txt
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%
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if(nargin==0)
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error('you must provide at least 1 input');
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end
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if(exist('zmat')==3)
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output=zmat(uint8(input),0,'zlib');
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return;
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end
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error(javachk('jvm'));
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if ischar(input)
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warning('zlibdecode:inputTypeMismatch', ...
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'Input is char, but treated as uint8.');
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input = uint8(input);
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end
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if ~isa(input, 'int8') && ~isa(input, 'uint8')
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error('Input must be either int8 or uint8.');
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end
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buffer = java.io.ByteArrayOutputStream();
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zlib = java.util.zip.InflaterOutputStream(buffer);
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zlib.write(input, 0, numel(input));
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zlib.close();
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output = typecast(buffer.toByteArray(), 'uint8')';
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end
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