diff chordtools/chord2quality.m @ 1:8973548174c1 tip

adding tools to repo

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/chordtools/chord2quality.m	Mon May 06 14:43:47 2013 +0100
@@ -0,0 +1,85 @@
+%
+% 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
+%           intervals2quality
+% 
+% returns:  quality (integer)
+%           success  (boolean)  
+%           errormessage (string)
+%
+%
+% Author: Christopher Harte,  March 2009
+% 
+% Copyright: Centre for Digital Music, Queen Mary University of London 2005 
+%
+% This file is part of the C4DM Chord Toolkit V2.0  
+%
+% 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 = 0;
+errormessage = '';
+
+if nargin < 2
+    verbose = 0;
+end
+
+[rootnote,shorthand,interval_list,bassinterval,success,error] = getchordinfo(chordsymbol);
+
+if success
+    
+    if ~isempty(shorthand)
+    
+        [quality, success, error] = short2quality(shorthand);
+        
+    else
+   
+        [quality, success, error] = intervals2quality(interval_list);
+        
+    end
+    
+end
+
+
+
+if(success==0) 
+
+    errormessage = sprintf([error 'Error in Chord2quality: Chord "' chordsymbol '"\n']);
+    
+    if verbose == 1
+        fprintf(1, errormessage);
+    end
+end
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