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2023.11.26

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sshlien
2023-11-26 12:51:23 -05:00
parent f470c694ac
commit 69c1f850cb
3 changed files with 34 additions and 12 deletions
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42
midistats.c
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@@ -18,7 +18,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define VERSION "0.80 November 17 2023 midistats"
#define VERSION "0.81 November 26 2023 midistats"
#include <limits.h>
/* Microsoft Visual C++ Version 6.0 or higher */
@@ -67,6 +67,7 @@ int lasttrack = 0; /* lasttrack */
int division; /* pulses per quarter note defined in MIDI header */
int quietLimit; /* minimum number of pulses with no activity */
long tempo = 500000; /* the default tempo is 120 quarter notes/minute */
int bpm = 120; /*default tempo */
long laston = 0; /* length of MIDI track in pulses or ticks */
int key[12];
int sharps;
@@ -475,7 +476,7 @@ int i;
/* [SS] 2023-10-30 */
void stats_interpret_pulseCounter () {
int i,j;
int maxcount,ncounts;
int maxcount,ncounts,npeaks,npositives,peaklimit;
int maxloc;
float threshold,peak;
int decimate;
@@ -485,6 +486,7 @@ int nzeros;
threshold = 10.0/(float) division;
maxcount = 0;
ncounts = 0;
npeaks = 0;
for (i=0;i<division;i++) {
ncounts = ncounts + pulseCounter[i];
if (pulseCounter[i] > maxcount) {
@@ -492,6 +494,10 @@ for (i=0;i<division;i++) {
maxcount = pulseCounter[i];
}
}
peaklimit = (int) (ncounts * 0.020);
for (i=0;i<division;i++) {
if (pulseCounter[i] > peaklimit) npeaks++;
}
for (i = 0; i < resolution; i++) pulseDistribution[i] = 0;
decimate = division/resolution;
for (i = 0; i < division; i++) {
@@ -501,17 +507,26 @@ for (i = 0; i < division; i++) {
/* count zeros */
nzeros = 0;
for (i=0;i<resolution;i++) if(pulseDistribution[i] == 0) nzeros++;
if (nzeros > 7 && pulseDistribution[resolution-1] == 0) printf("clean_quantization");
if (pulseDistribution[resolution-1] > 0.05) printf("dithered_quantization\n");
for (i=0;i<resolution;i++) if((float) pulseDistribution[i]/(float) ncounts < 0.015 ) nzeros++;
npositives = resolution - nzeros;
if (nzeros > 3 && (float) pulseDistribution[resolution-1]/(float) ncounts < 0.1) {printf("clean_quantization\n");
} else if ((float) pulseDistribution[resolution-1]/(float) ncounts > 0.09 ||
npeaks > npositives) {printf("dithered_quantization\n");
} else {
peak = (float) maxcount/ (float) ncounts;
if (peak < threshold) printf("unquantized\n");
}
tripletsCriterion8 = (float) pulseDistribution[8]/ (float) ncounts;
tripletsCriterion4 = (float) pulseDistribution[4]/ (float) ncounts;
/*printf("tripletsCriterion = %f\n",tripletsCriterion);*/
if (tripletsCriterion8 > 0.10 || tripletsCriterion4 > 0.10) printf("triplets\n");
if (pulseDistribution[0]/(float) ncounts > 0.95) printf("qnotes");
/*
printf("pulseDistribution:");
for (i=0;i<resolution;i++) printf("%6.3f",(float) pulseDistribution[i]/(float) ncounts);
printf("\n");
printf("nzeros = %d npeaks = %d \n",nzeros,npeaks);
*/
}
void stats_finish()
@@ -580,7 +595,7 @@ else
printf("\ntrkact ");
lasttrack++;
for (i=0;i<lasttrack;i++) printf("% 5d",trkactivity[i]);
printf("\npitchentropy %f\n",histogram_perplexity(pitchclass_activity,12));
printf("\npitchperplexity %f\n",histogram_perplexity(pitchclass_activity,12));
printf("totalrhythmpatterns =%d\n",nrpatterns);
printf("collisions = %d\n",ncollisions);
if (hasLyrics) printf("Lyrics\n");
@@ -945,6 +960,12 @@ void record_noteoff(int chan,int pitch,int vol)
void record_trackend()
{
}
void record_tempo(long ltempo)
{
tempo = ltempo;
if (bpm == 120) bpm = 60000000.0/tempo;
tempocount++;
}
int int_compare_events(const void *a, const void *b) {
struct eventstruc *ia = (struct eventstruc *)a;
@@ -1013,7 +1034,7 @@ void initfunc_for_loadNoteEvents()
Mf_eot = no_op0;
Mf_timesig = no_op4;
Mf_smpte = no_op5;
Mf_tempo = no_op1;
Mf_tempo = record_tempo;
Mf_keysig = no_op2;
Mf_seqspecific = no_op3;
Mf_text = no_op3;
@@ -1238,7 +1259,8 @@ int nchannels;
nchannels = 0;
for (i=1;i<17;i++)
if (channel_active[i] > 0) nchannels++;
printf("%d\t%d\t%d\t%d\t%d\n",lasttrack,nchannels, division,lastEvent,lastBeat);
printf("%d\t%d\t%d\t%d\t%d\t%d\n",lasttrack,nchannels, division,bpm,lastEvent,lastBeat);
/*printf("%d\n",tempocount);*/
}