2021.11.25

VERSION

@@ -1,2 +1,2 @@
-2021 June 24 2021
+2021 November 25 2021
 

abcmatch.c

@@ -49,7 +49,7 @@ Matching:
 
 
 
-#define VERSION "1.79 May 25 2021 abcmatch"
+#define VERSION "1.80 Novemeber 25 2021 abcmatch"
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -274,7 +274,7 @@ make_note_representation (int *nnotes, int *nbars, int maxnotes, int maxbars,
    these bar line indications. Note bar numbering starts
    from 0. [SS] 2013-11-17
 */
-          if (*nbars >0 && *nnotes > 0) { /* 2021-03-27 */
+          if (*nnotes > 0) {  /* [SS] 2021-11-25 */
 	    midipitch[*nnotes] = BAR;
 	    notelength[*nnotes] = BAR;
 	    (*nnotes)++;

doc/CHANGES

@@ -14277,3 +14277,217 @@ Fix: moved headerprocess(), getvoicecontext(), etc to after
 calling event_octave().
 
 
+June 27 2021
+
+midi2abc: bug
+For some midi files midi2abc returns something like this
+X: 1
+T: from gchordbreakdown1.mid
+M: 4/4
+L: 1/8
+Q:1/4=120
+K:C % 0 sharps
+V:1
+K:E % 16 sharps
+=c=d e=g e4| \
+
+
+Analysis, in the function handletext(), the local variable sf is
+declared as an integer but not initialized. The function
+sscanf(str,"%d %d",&sf,&mi);
+attempts to read sf and mi from str, but str does not contain
+any integers, and sf is not changed.
+Temporary fix: initialized sf to 0.
+
+
+June 27 2021
+
+abc2midi: %%MIDI gchordoff produces garbage. In the following file
+
+X:1
+T: gchord breakdown
+M: 4/4
+L: 1/8
+Q:1/4=120
+K:C
+%%MIDI gchord ghi2ihi2
+%%MIDI gchordoff
+"C" cd eg e4 |"Am" ag ag e4 |
+%%MIDI gchordon
+"Dm" defe d4 | "G7" g6z2 |
+
+The output in track 2 as seen by midi2abc looks like this.
+X: 1
+T: from gchordbreakdown1.mid
+M: 4/4
+L: 1/8
+Q:1/4=120
+K:C % 0 sharps
+V:1
+cd eg e4| \
+ag ag e4| \
+de fe d4| \
+g6 
+V:2
+F,,,,F,,,, F,,,,2 F,,,,F,,,, F,,,,2| \
+F,,,,F,,,, F,,,,2 F,,,,F,,,, F,,,,2| \
+D,F, A,2 A,F, A,2| \
+G,B, D2 DB, D2|
+
+instead of
+
+X: 1
+T: from gchordbreakdown1.mid
+M: 4/4
+L: 1/8
+Q:1/4=120
+K:C % 0 sharps
+V:1
+cd eg e4| \
+ag ag e4| \
+de fe d4| \
+g6 
+V:2
+z8| \
+z8| \
+D,F, A,2 A,F, A,2| \
+G,B, D2 DB, D2|
+
+Analysis: abc2midi works correctly without the
+%%MIDI gchord ghi2ihi2
+declaration. The problem occurs in the function dogchords().
+This function was expanded to handle alberti starting from May 1 2004.
+Unfortunately, the fix introduced in 2016-01-03 introduced this
+problem when %%MIDI gchordoff sets gchords to 0. The else branch
+outputs gchordnotes[gchordnotes_size] when in fact, no note should
+be queued out.
+
+Fix: prefixed the switch(action) statement with the line
+ if (gchords) /* [SS] 2021-06-27 */
+preventing any note output when gchords is 0.
+
+In addition, the case 'b' was missing a break, allowing the switch statement
+to continue to case 'c' and causing a different problem when
+%%MIDI gchord ffbb
+
+
+September 15 2021
+
+abc2midi bug:
+The last fix in June 27 2021 inserting a break introduced a new bug.
+The chord associated with the 'b' gchord code was missing. b and f
+codes were indistinguishable. Fix: removed the break in the switch
+statement for case b:
+
+
+October 11 2021
+
+abc2midi new feature:
+In compliance with the ABC draft standard 2.2, I introduced additional
+K: and V: options for transposition. You can now indicate the number
+of semitones to transpose by giving the original note and the 
+corresponding transposed note in the K: or V: field using either
+shift = note1note2
+sound = note1note2
+instrument = note1/note2
+The number of semitones is determined by the difference note2 - note1.
+
+Abcm2ps and abc2svg recognize this command, but abc2abc, yaps, and
+abcmatch ignore this new option.
+
+http://abcnotation.com/wiki/abc:standard:v2.2#transposition
+
+Here is a test sample:
+
+X:1
+T: standard 2.2 transposition
+M: 4/4
+L: 1/4
+K: C  
+V:1 
+Bcde|Bcde|
+V:2
+Bcde|Bcde|
+V:1 shift = Bc
+Bcde|Bcde|
+V:2
+Bcde|Bcde|
+V:1 sound = dc
+Bcde|Bcde|
+V:2
+Bcde|Bcde|
+V:1 instrument = c/^D
+Bcde|Bcde|
+V:2
+Bcde|Bcde|
+V:1 transpose = 0
+Bcde|Bcde|
+V:2 shift=DE,
+Bcde|Bcde|
+
+
+October 15 2021
+
+Abc2abc -P bug
+
+
+
+X:1
+T: P bug
+M:4/4
+L:1/4
+V:1 clef=treble
+V:2 clef=bass
+%%staves [1 2]
+K:C
+V:1
+C2 D2  |  C4 |
+V:2
+C,2 G,2 | C,4|
+
+The command
+abc2abc t.abc -t 3 -P 1
+fails to transpose voice 1
+
+This bug has been around since this option was introduced in June 7 2011.
+Fortunately, it has not bothered anyone until recently.
+If you add another K:c after the first V:1 command in the body as
+shown below.
+
+X:1
+T: P bug
+M:4/4
+L:1/4
+V:1 clef=treble
+V:2 clef=bass
+%%staves [1 2]
+K:C
+V:1
+K:C
+C2 D2  |  C4 |
+V:2
+C,2 G,2 | C,4|
+
+then voice 1 will be transposed correctly. Unfortunately, there is
+no easy fix. When the -P option is present, abc2abc ignores the
+first K: field command. (In toabc.c line 1643 event_key aborts
+prior to setting up the arrays for a key transpose. Commenting
+out this return statement introduces another problem.)
+
+The main issue is that abc2abc only does one pass through the
+input file. It does not know whether there is a K: field command
+following V:1. If it assumes that there is none and forces a
+call to event_key in event_voice, there may be another problem
+when a different K: field command is found eventually. I have
+decided to suspend support to the -P option because it would be
+too complicated to fix this.
+
+
+November 25 2021
+
+abcmatch bug. The fix on 2021-03-27 made abcmatch non-operable. The
+number of bars *nbars is never incremented. The line was replaced
+with
+if (*nnotes > 0) { /* [SS] 2021-11-25 */
+in the function make_note_representation(...)
+

doc/readme.txt

@@ -1,10 +1,10 @@
 abcMIDI :   abc <-> MIDI conversion utilities
 
-midi2abc version 3.47 May 25 2021
-abc2midi version 4.58 June 24 2021
+midi2abc version 3.48 June 27 2021
+abc2midi version 4.61 October 11 2021
 abc2abc  version 2.15 May 25 2021
 yaps     version 1.87 May 25 2021
-abcmatch version 1.79 May 25 2021
+abcmatch version 1.80 November 25 2021
 midicopy version 1.37 October 10 2020
 
 24th January 2002
@@ -14,7 +14,7 @@ J.R.Allwright@westminster.ac.uk
 University of Westminster,
 London, UK
 
-June 2021
+October 2021
 
 Seymour Shlien
 Ottawa, Canada

genmidi.c

@@ -2389,6 +2389,7 @@ int j;
     if ((chordnum == -1) && (action == 'c')) {
       action = 'f';
     };
+    if (gchords) /* [SS] 2021-06-27 */
     switch (action) {
 
     case 'z':
@@ -2411,8 +2412,9 @@ int j;
         save_note(g_num*len, g_denom, basepitch+fun.base, 8192, fun.chan, fun.vel);
         else
         save_note(g_num*len, g_denom, inversion+fun.base, 8192, fun.chan, fun.vel);
-      };
-/* There is no break here so the switch statement continues into the next case 'c' */ 
+        }
+      /* break;  * [SS] 2021-06-27 2021-09-15 */
+/* There should not be a break here so the switch statement continues into the next case 'c' */ 
 
     case 'c':
       /* do chord with handling of any 'inversion' note */

midi2abc.c

@@ -45,7 +45,7 @@
  * based on public domain 'midifilelib' package.
  */
 
-#define VERSION "3.48 May 25 2021 midi2abc"
+#define VERSION "3.49 June 27 2021 midi2abc"
 
 #include <limits.h>
 /* Microsoft Visual C++ Version 6.0 or higher */
@@ -2739,6 +2739,8 @@ int trackno;
   char ch;
   int type,sf,mi,nn,denom,bb;
 
+  sf = 0; /* [SS] 2021-06-27 */
+
   while (((*textplace) != NULL) && ((*textplace)->when <= t)) {
     str = (*textplace)->text;
     ch = *str;

parseabc.c

@@ -81,6 +81,7 @@ extern char *malloc ();
 extern char *strchr ();
 #endif
 
+int note2midi (char** s); 
 int lineno;
 int parsing_started = 0;
 int parsing, slur;
@@ -939,8 +940,8 @@ int interpret_voice_label (char *s, int num, int *is_new)
   return num_voices;
 }
 
-/* The following three functions parseclefs, parsetranspose,
- * parseoctave are used to parse the K: field which not
+/* The following four functions parseclefs, parsetranspose,
+ * parsesound, parseoctave are used to parse the K: field which not
  * only specifies the key signature but also other descriptors
  * used for producing a midi file or postscript file.
  *
@@ -1019,6 +1020,49 @@ parsetranspose (s, word, gottranspose, transpose)
   return 1;
 };
 
+/* [SS] 2021-10-11 */
+int
+parsesound (s, word, gottranspose, transpose)
+/* parses string sound = 
+                 shift =
+                 instrument = note1note2 or note1/note2
+  for parsekey() or parsevoice()
+  and returns the transpose value
+*/
+     char **s;
+     char *word;
+     int *gottranspose;
+     int *transpose;
+  {   
+  int p1,p2;
+  if (casecmp(word,"sound") != 0
+     && casecmp(word,"shift") != 0
+     && casecmp(word,"instrument") != 0
+     )
+    return 0;
+  skipspace (s);
+  if (**s != '=')
+    {
+      event_error ("sound must be followed by '='");
+     return 0;
+     } else {
+      *s = *s + 1;
+      skipspace (s);
+      p1 = note2midi (s);
+      /* printf("midi note = %d\n",p1); */
+      p2 = note2midi (s);
+      if (p2 == p1) {
+          *gottranspose = 0;
+          *transpose = 0;
+          } else {
+          /* printf("midi note = %d\n",p2); */
+          *transpose = p2 - p1; 
+          /* printf("transpose = %d\n",*transpose); */
+          *gottranspose = 1;
+          }
+     }
+  return 1;
+  }
 
 int
 parseoctave (s, word, gotoctave, octave)
@@ -1382,6 +1426,9 @@ parsekey (str)
       if (!parsed)
 	parsed = parseoctave (&s, word, &gotoctave, &octave);
 
+      if (!parsed)
+        parsed = parsesound (&s, word, &gottranspose, &transpose);
+
       if ((parsed == 0) && (casecmp (word, "Hp") == 0))
 	{
 	  sf = 2;
@@ -1623,6 +1670,8 @@ parsevoice (s)
 			  &vparams.transpose);
       if (!parsed)
 	parsed = parseoctave (&s, word, &vparams.gotoctave, &vparams.octave);
+      if (!parsed)
+        parsed = parsesound (&s, word, &vparams.gottranspose, &vparams.transpose);
       if (!parsed)
 	parsed =
 	  parsename (&s, word, &vparams.gotname, vparams.namestring,
@@ -2661,6 +2710,156 @@ static void check_and_call_bar(int bar_type, char *replist)
   event_bar (bar_type, replist);
 }
 
+
+/* [SS] 2021-10-11   */
+static int pitch2midi(note, accidental, mult, octave )
+/* computes MIDI pitch for note.
+*/
+char note, accidental;
+int mult, octave;
+{
+  int p;
+  char acc;
+  int mul, noteno;
+  int pitch;
+
+  static int scale[7] = {0, 2, 4, 5, 7, 9, 11};
+
+  static const char *anoctave = "cdefgab";
+  acc = accidental;
+  mul = mult;
+  noteno = (int)note - 'a';
+ 
+  p = (int) ((long) strchr(anoctave, note) - (long) anoctave);
+  p = scale[p];
+  if (acc == '^') p = p + mul;
+  if (acc == '_') p = p - mul;
+  p = p + 12*octave + 60;
+return p; 
+}
+
+
+
+/* [SS] 2021-10-11   */
+int
+note2midi (char** s)
+{
+/* for implementing sound=, shift= and instrument= key signature options */
+
+/* check for accidentals */
+char note, accidental;
+char msg[80];
+int octave;
+int mult;
+int pitch;
+/*printf("note2midi: %c\n",**s); */
+if (**s == '\0') return 72;
+mult = 1;
+accidental = ' ';
+switch (**s)
+    {
+    case '_':
+      accidental = **s;
+      *s = *s + 1;
+      if (**s == '_')
+        {
+          *s = *s + 1;
+          mult = 2;
+        };
+      break;
+    case '^':
+      accidental = **s;
+      *s = *s + 1;
+      if (**s == '^')
+        {
+          *s = *s + 1;
+          mult = 2;
+        };
+      break;
+    case '=':
+      accidental = **s;
+      *s = *s + 1;
+      break;
+    default:
+      break;
+    };
+
+  if ((**s >= 'a') && (**s <= 'g'))
+    {
+      note = **s;
+      octave = 1;
+      *s = *s + 1;
+      while ((**s == '\'') || (**s == ',') || (**s == '/'))
+        {
+          if (**s == '\'')
+            {
+              octave = octave + 1;
+              *s = *s + 1;
+            };
+          if (**s == ',')
+            {
+              sprintf (msg, "Bad pitch specifier , after note %c", note);
+              event_error (msg); 
+              octave = octave - 1;
+              *s = *s + 1;
+            };
+          if (**s == '/')
+             {
+             /* skip / which occurs in instrument = command */
+              *s = *s + 1;
+/*  printf("note = %c  accidental = %c mult = %d octave= %d \n",note,accidental,mult,octave); */
+              pitch = pitch2midi(note, accidental, mult, octave);
+              return pitch;
+              }
+        };
+    }
+  else
+    {
+      octave = 0;
+      if ((**s >= 'A') && (**s <= 'G'))
+        {
+          note = **s + 'a' - 'A';
+          *s = *s + 1;
+          while ((**s == '\'') || (**s == ',') || (**s == '/'))
+            {
+              if (**s == ',')
+                {
+                  octave = octave - 1;
+                  *s = *s + 1;
+                };
+              if (**s == '\'')
+                {
+                  sprintf (msg, "Bad pitch specifier ' after note %c",
+                           note + 'A' - 'a');
+                  event_error (msg); 
+                  octave = octave + 1;
+                  *s = *s + 1;
+                };
+          if (**s == '/')
+             {
+             /* skip / which occurs in instrument = command */
+              *s = *s + 1;
+/*  printf("note = %c  accidental = %c mult = %d octave= %d \n",note,accidental,mult,octave); */
+              pitch = pitch2midi(note, accidental, mult, octave);
+              return pitch;
+            };
+        };
+    };
+ /* printf("note = %c  accidental = %c mult = %d octave= %d \n",note,accidental,mult,octave); */
+  } 
+  if (note == ' ')
+    {
+      event_error ("Malformed note : expecting a-g or A-G");
+    }
+  pitch = pitch2midi(note, accidental, mult, octave);
+  return pitch;
+}
+
+
+
+
+
+
 void
 parsemusic (field)
      char *field;

store.c

@@ -186,7 +186,7 @@ int main()
 
 */
 
-#define VERSION "4.58 June 24 2021 abc2midi" 
+#define VERSION "4.61 October 11 2021 abc2midi" 
 
 /* enables reading V: indication in header */
 #define XTEN1 1