2021.06.27

VERSION

@@ -1,2 +1,2 @@
-2021 June 24 2021
+2021 June 27 2021
 

doc/CHANGES

@@ -14277,3 +14277,101 @@ 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
+
+
+
+
+
+

doc/readme.txt

@@ -1,7 +1,7 @@
 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 4.59 June 27 2021
 abc2abc  version 2.15 May 25 2021
 yaps     version 1.87 May 25 2021
 abcmatch version 1.79 May 25 2021

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':
@@ -2412,6 +2413,7 @@ int j;
         else
         save_note(g_num*len, g_denom, inversion+fun.base, 8192, fun.chan, fun.vel);
       };
+      break;  /* [SS] 2021-06-27 */
 /* There is no break here so the switch statement continues into the next case 'c' */ 
 
     case 'c':

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;

store.c

@@ -186,7 +186,7 @@ int main()
 
 */
 
-#define VERSION "4.58 June 24 2021 abc2midi" 
+#define VERSION "4.59 June 27 2021 abc2midi" 
 
 /* enables reading V: indication in header */
 #define XTEN1 1