2023.08.31

VERSION

@@ -1,2 +1,2 @@
-August 22 2023
+August 31 2023
 

doc/midistats.1

@@ -37,6 +37,10 @@ the sum of the note durations in MIDI pulse units,
 the number of control parameter messages,
 the number of pressure messages.
 and the number of distinct rhythm patterns for each channel
+the minimum pitch value
+the maximum pitch value
+the minimum note length in pulses
+the maximum note length in pulses
 .PP
 After processing all the individual tracks, the following information
 applies to the entire midi file.

doc/readme.txt

@@ -6,7 +6,7 @@ abc2abc  version 2.20 February 07 2023
 yaps     version 1.92 January 06 2023
 abcmatch version 1.82 June 14 2022
 midicopy version 1.38 May 06 2022
-midistats version 0.71 August 222023
+midistats version 0.72 August 31 2023
 
 24th January 2002
 Copyright James Allwright

midistats.c

@@ -18,7 +18,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  */
  
-#define VERSION "0.71 August 22 2023 midistats"
+#define VERSION "0.72 August 31 2023 midistats"
 
 #include <limits.h>
 /* Microsoft Visual C++ Version 6.0 or higher */
@@ -52,7 +52,8 @@ void stats_finish();
 float histogram_entropy (int *histogram, int size); 
 void stats_noteoff(int chan,int pitch,int vol);
 void stats_eot ();
-
+#define max(a,b)  (( a > b ? a : b))
+#define min(a,b) (( a < b ? a : b))
 
 /* Global variables and structures */
 
@@ -114,8 +115,9 @@ int trackcount = 0;
 
 int notechan[2048],notechanvol[2048]; /*for linking on and off midi
 					channel commands            */
-int last_tick[17]; /* for getting last pulse number in MIDI file */
+int lastTick[2048]; /* for getting last pulse number for chan (0-15) and pitch (0-127) in MIDI file */
 int last_on_tick[17]; /* for detecting chords [SS] 2019-08-02 */
+int channel_active[17]; /* for dealing with chords [SS] 2023-08-30 */
 
 int histogram[256];
 unsigned char drumpat[8000];
@@ -131,7 +133,11 @@ struct trkstat {
   int notecount[17];
   int chordcount[17];
   int notemeanpitch[17];
+  int notepitchmin[17];
+  int notepitchmax[17];
   int notelength[17];
+  int notelengthmin[17];
+  int notelengthmax[17];
   int pitchbend[17];
   int pressure[17];
   int cntlparam[17];
@@ -589,7 +595,10 @@ for (i=1;i<17;i++) {
    else 
      printf("-1  0 ");
    printf("%d %d ",trkdata.cntlparam[i],trkdata.pressure[i]); /* [SS] 2022-03-04 */
-   printf("%d %d",trkdata.quietTime[i],trkdata.rhythmpatterns[i]);
+   printf("%d %d ",trkdata.quietTime[i],trkdata.rhythmpatterns[i]);
+   if (i != 10)  printf("%d %d %d %d",trkdata.notepitchmin[i],  trkdata.notepitchmax[i] ,trkdata.notelengthmin[i],  trkdata.notelengthmax[i]);
+   else
+     printf("-1 0");
    trkdata.quietTime[i] = 0;
    printf("\n");
 
@@ -607,13 +616,19 @@ void stats_trackstart()
   for (i=0;i<17;i++) {
      trkdata.notecount[i] = 0;
      trkdata.notemeanpitch[i] = 0;
+     trkdata.notepitchmin[i] = 128;
+     trkdata.notepitchmax[i] = 0;
      trkdata.notelength[i] = 0;
+     trkdata.notelengthmin[i] = 10000;
+     trkdata.notelengthmax[i] = 0;
      trkdata.chordcount[i] = 0;
      trkdata.cntlparam[i] = 0;
-     last_tick[i] = -1;
      last_on_tick[i] = -1;
+     channel_active[i] = 0;
      }
   printf("trk %d \n",tracknum);
+
+ for (i=0;i<2048;i++) lastTick[i] = -1;
 }
 
 void stats_trackend()
@@ -641,6 +656,8 @@ int chan, pitch, vol;
     return;
     }
  trkdata.notemeanpitch[chan+1] += pitch;
+ trkdata.notepitchmax[chan+1] = max(trkdata.notepitchmax[chan+1],pitch);
+ trkdata.notepitchmin[chan+1] = min(trkdata.notepitchmin[chan+1],pitch);
  if (trkdata.lastNoteOff[chan+1] >= 0) {
 	 delta = Mf_currtime - trkdata.lastNoteOff[chan+1];
 	 trkdata.lastNoteOff[chan+1] = -1; /* in case of chord */
@@ -651,7 +668,7 @@ int chan, pitch, vol;
 	 
  if (abs(Mf_currtime - last_on_tick[chan+1]) < chordthreshold) trkdata.chordcount[chan+1]++;
  else trkdata.notecount[chan+1]++; /* [SS] 2019-08-02 */
- last_tick[chan+1] = Mf_currtime;
+ lastTick[chan*128 + pitch] = Mf_currtime;
  last_on_tick[chan+1] = Mf_currtime; /* [SS] 2019-08-02 */
  /* last_on_tick not updated by stats_noteoff */
 
@@ -679,6 +696,8 @@ int chan, pitch, vol;
    else  drumhistogram[pitch]++;
    }
  else pitchhistogram[pitch % 12]++;  /* [SS] 2017-11-01 */
+
+ channel_active[chan+1]++;
 }
 
 
@@ -691,17 +710,27 @@ void stats_noteoff(int chan,int pitch,int vol)
   int length;
   int program;
   /* ignore if there was no noteon */
-  if (last_tick[chan+1] == -1) return;
-  length = Mf_currtime - last_tick[chan+1];
+  if (lastTick[chan*128+pitch] == -1) return;
+  length = Mf_currtime - lastTick[chan*128+pitch];
   trkdata.notelength[chan+1] += length;
+  trkdata.notelengthmax[chan+1] = max(trkdata.notelengthmax[chan+1],length);
+  trkdata.notelengthmin[chan+1] = min(trkdata.notelengthmin[chan+1],length);
+  if (length < 3) printf("chan = %d  lasttick = %d currtime = %ld\n",chan,lastTick[chan*128+pitch],Mf_currtime);
   trkdata.lastNoteOff[chan+1] = Mf_currtime; /* [SS] 2022.08.22 */
   chnactivity[chan+1] += length;
   if (chan == 9) return; /* drum channel */
   pitchclass_activity[pitch % 12] += length;
   program = trkdata.program[chan+1];
   progactivity[program] += length;
+  channel_active[chan+1]--;
   /* [SS] 2018-04-18 */
-  if(Mf_currtime > last_tick[chan+1]) last_tick[chan+1] = Mf_currtime;
+  if(Mf_currtime > lastTick[chan*128+pitch] && channel_active[chan+1] == 0) 
+    lastTick[chan*128+pitch] = Mf_currtime; /* [SS] 2023.08.30 handle chords */
+    
+  if (length > 4800) {
+     lastTick[chan*128+pitch] = Mf_currtime; /* handle stuck note [SS] 2023.08.30 */
+     channel_active[chan+1] = 0;
+     }
 }