diff chordtools/intervals2semitones.m @ 1:8973548174c1 tip

adding tools to repo

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/chordtools/intervals2semitones.m	Mon May 06 14:43:47 2013 +0100
@@ -0,0 +1,117 @@
+%
+%INTERVALS2SEMITONES convert an interval list to an array of semitone values
+% 
+% [semitones, success, errormessage] = intervals2semitones(interval_list, {verbose})
+% 
+% Converts a list of intervals to corresponding semitone degrees 
+% 
+% Success = 1 if symbols parsed correctly, 0 otherwise.
+% 
+% If optional argument 'verbose' is 1, function prints any errormessage to 
+% the screen.
+% 
+% calls interval2semitone
+% 
+% returns:  semitones (array of integers)
+%           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 [semitones, success, errormessage] = intervals2semitones(interval_list, verbose)
+
+% set verbose default to 0
+if nargin < 2
+    verbose = 0;
+end
+
+errormessage = '';
+
+ilength = length(interval_list);
+
+index = 1;
+
+tempindex = 1;
+
+tempstring = '';
+
+success = 1;
+
+parindex  = 1;
+
+semitones = [];
+
+
+while index <= ilength
+    
+   
+    while (interval_list(index) ~= ',')  
+        
+        tempstring(tempindex) = interval_list(index);
+        tempindex = tempindex +1;
+        index = index + 1;
+        
+        if(index > ilength)
+            break;
+        end
+        
+        if (interval_list(index) == ',') && (index == ilength)
+            success = 0;
+            errormessage = sprintf(['Error in intervals2semitones: interval list finishes with a comma "' interval_list '"\n']);
+        end
+            
+            
+    end
+    
+        [semitones(parindex),ok, error] = interval2semitone(tempstring);
+        % concatenate error messages if there are any...
+        errormessage = [errormessage error];
+        
+        if(ok == 1)
+            tempstring = '';
+            tempindex = 1;
+            parindex = parindex + 1;
+            index = index + 1;
+        else
+
+            errormessage = [errormessage sprintf(['Error in intervals2semitones: incorrect interval in list "' interval_list '"\n'])];
+            success = 0;
+            index = ilength +1;            
+        end
+    
+    
+end
+
+if (success == 0) && (verbose == 1)
+
+    fprintf(1,errormessage)
+    
+end    
+
+
+
+
+
+
+
+