Mauch MIREX 2010

%

% CHORD2QUALITY return the chord quality of a given chord symbol

% 

% [quality,success, errormessage] = chord2quality(chordsymbol, {verbose})

% 

% Returns the chord quality of a given chord symbol. Quality values are from 

% the enumeration:

%

% 0   Major

% 1   Minor

% 2   Diminished

% 3   Augmented

% 4   Suspended

%

% Success = 1 if symbols parsed correctly, 0 otherwise. 

%

% If optional argument 'verbose' is 1, function prints any errormessage to 

% the screen.

% 

% calls:    getchordinfo

%           short2quality

%           degrees2quality

% 

% returns:  quality (integer)

%           success  (boolean)  

%           errormessage (string)

%

%

% Author: Christopher Harte,  August 2005

% 

% Copyright: Centre for Digital Music, Queen Mary University of London 2005 

%

% This file is part of the C4DM Chord Toolkit.  

%

% The C4DM Chord Toolkit 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 2 of the License, or

% (at your option) any later version.

%

% The C4DM Chord Toolkit 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 the C4DM Toolkit; if not, write to the Free Software

% Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

%

function [quality, success, errormessage] = chord2quality(chordsymbol,verbose)

quality = '';

errormessage = '';

if nargin < 2

    verbose = 0;

end

[rootnote,shorthand,degreelist,bassdegree,success,error] = getchordinfo(chordsymbol);

if success

    if ~isempty(shorthand)

        [quality, success, error] = short2quality(shorthand);

    else

        [quality, success, error] = degrees2quality(degreelist);

    end

end

if(success==0) 

    errormessage = sprintf([error 'Error in Chord2quality: Chord "' chordsymbol '"\n']);

    if verbose == 1

        fprintf(1, errormessage);

    end

end