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2023.08.13

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sshlien
2023-09-13 17:36:44 -04:00
parent 1394cd96c5
commit 2bf0052eb8
4 changed files with 22 additions and 5 deletions
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22
midistats.c
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@@ -18,7 +18,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define VERSION "0.74 September 11 2023 midistats"
#define VERSION "0.75 September 13 2023 midistats"
#include <limits.h>
/* Microsoft Visual C++ Version 6.0 or higher */
@@ -149,6 +149,7 @@ struct trkstat {
int quietTime[17];
int rhythmpatterns[17];
int numberOfGaps[17];
float pitchEntropy[17];
} trkdata;
/* The trkstat references the individual channels in the midi file.
@@ -172,6 +173,7 @@ int channel2nnotes[17]; /*maps channel to note count */
int chnactivity[17]; /* [SS] 2018-02-02 */
int progactivity[128]; /* [SS] 2018-02-02 */
int pitchclass_activity[12]; /* [SS] 2018-02-02 */
int chanpitchhistogram[204]; /* [SS] 2023-09-13 */
/* [SS] 2017-11-01 */
@@ -541,8 +543,10 @@ float histogram_entropy (int *histogram, int size)
float e,p;
total = 0;
entropy = 0.0;
//printf("\nhistogram_entropy of:");
for (i=0;i<size;i++) {
total += histogram[i];
//printf(" %d",histogram[i]);
}
for (i=0;i<size;i++) {
if (histogram[i] < 1) continue;
@@ -550,6 +554,7 @@ float histogram_entropy (int *histogram, int size)
e = p*log(p);
entropy = entropy + e;
}
//printf("\n");
return -entropy/log(2.0);
}
@@ -590,8 +595,9 @@ for (i=1;i<17;i++) {
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]);
if (i != 10) printf("%d %d %d %d %d",trkdata.notepitchmin[i], trkdata.notepitchmax[i] ,trkdata.notelengthmin[i], trkdata.notelengthmax[i], trkdata.numberOfGaps[i]);
else
if (i != 10) {printf("%d %d %d %d %d",trkdata.notepitchmin[i], trkdata.notepitchmax[i] ,trkdata.notelengthmin[i], trkdata.notelengthmax[i], trkdata.numberOfGaps[i]);
printf(" %f",trkdata.pitchEntropy[i]);
} else
printf("-1 0");
trkdata.quietTime[i] = 0; /* in case channel i is used in another track */
trkdata.numberOfGaps[i] = 0;
@@ -625,14 +631,21 @@ void stats_trackstart()
for (i=0;i<2048;i++) lastTick[i] = -1;
for (i=0;i<17;i++) channel_used_in_track[i] = 0; /* [SS] 2023-09-06 */
for (i=0;i<204;i++) chanpitchhistogram[i] = 0; /* [SS] 2023-09-13 */
}
void stats_trackend()
{
int chan;
int i;
float entropy;
if (trkdata.npulses[0] < Mf_currtime) trkdata.npulses[0] = Mf_currtime;
for (chan = 1; chan < 17; chan++) /* [SS] 2023-09-06 */
if (channel_used_in_track[chan] > 0) trkdata.quietTime[chan] += (trkdata.npulses[0] - trkdata.lastNoteOff[chan]);
for (chan=0;chan<16;chan++) { /* 2023-09-13 */
if (chan == 9 || channel_used_in_track[chan+1] == 0) continue;
trkdata.pitchEntropy[chan+1] = histogram_entropy(chanpitchhistogram +chan*12,11);
}
output_track_summary();
}
@@ -645,7 +658,9 @@ int chan, pitch, vol;
int barnum;
int unit;
int dithermargin; /* [SS] 2023-08-22 */
int cpitch; /* [SS] 2023-09-13 */
cpitch = pitch % 12;
channel_used_in_track[chan+1]++; /* [SS] 2023-09-06 */
dithermargin = unitDivision/2 - 1;
if (vol == 0) {
@@ -686,6 +701,7 @@ int chan, pitch, vol;
unit = ((Mf_currtime+dithermargin) % divisionsPerBar)/unitDivision;
//printf("unit = %d pattern = %d \n",unit,barChn[chan].rhythmPattern);
barChn[chan].rhythmPattern = barChn[chan].rhythmPattern |= (1UL << unit);
chanpitchhistogram[chan*12+cpitch]++; /* [SS] 2023-09-13 */
}