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2024.03.18

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sshlien
2024-03-18 15:24:12 -04:00
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2
VERSION
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@@ -1,2 +1,2 @@
March 13 2024
March 18 2024

36
doc/midistats.1
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@@ -1,16 +1,24 @@
.TH MIDISTATS 1 "18 February 2024"
.TH MIDISTATS 1 "18 March 2024"
.SH NAME
\fBmidistats\fP \- program to summarize the statistical properties of a midi file
.SH SYNOPSIS
midistats \fIinfile\fP
This is a long manual because the program extracts many different parameters
from the midi file depending upon the options selected. This manual
attempts to describe these parameters and how they are computed.
These parameters are formatted in a way so they can be read by other
applications such midiexplorer.tcl, runstats.tcl, and numerous Python
scripts.
Many of the options were designed specifically for analyzing the
percussion track of the midi file. They are described in a separate
section below (Other options).
.SH DESCRIPTION
\fImidistats\fP analyzes the contents of a midi file and outputs key
information and various statistical measures. Each line of output
starts with the name of the variable or variable array and the
associated values. The output is interpreted by the user interface
midiexplorer.tcl. Both programs are still being improved. Here
is an explanation of some of the output.
If you run midistats without any options other than the name of
the midi input file, it will produce a table of values described
here. Each line of output starts with the name of the variable or
variable array and the associated values.
.PP
ntrks indicates the number of tracks in the midi file.
.PP
@@ -164,7 +172,17 @@ programcmd - there may be multiple program changes in a midi channel
.SH Advanced Percussion Analysis Tools
.SH Other options
It is recommended that you only select one of the options
described here as the program was not designed to handle a
multiple number of options.
.PP
If you run midistats with the -CSV option, it will return the
results in a form of comma separated values that can be loaded
into a Python panda dataframe. Each line refers to one of the
16 midi channels.
.PP
The MIDI file devotes channel 9 to the percussion instruments

2
doc/readme.txt
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@@ -6,7 +6,7 @@ abc2abc version 2.21 February 19 2024
yaps version 1.93 February 19 2024
abcmatch version 1.83 February 19 2024
midicopy version 1.39 November 08 2022
midistats version 0.89 March 13 2024
midistats version 0.90 March 18 2024
24th January 2002
Copyright James Allwright

74
midistats.c
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@@ -17,7 +17,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define VERSION "0.89 March 13 2024 midistats"
#define VERSION "0.90 March 18 2024 midistats"
/* midistrats.c is a descendent of midi2abc.c which was becoming to
large. The object of the program is to extract statistical characterisitic
@@ -95,6 +95,7 @@ int trackno;
int maintrack;
int format; /* MIDI file type */
int debug;
int noOutput;
int pulseanalysis;
int percanalysis;
int percpattern;
@@ -133,6 +134,7 @@ int percpatternhist = 0;
int pitchclassanalysis = 0;
int nseqfor = 0;
int corestats = 0;
int noOutput = 0;
/* can cope with up to 64 track MIDI files */
@@ -301,7 +303,6 @@ for (i = 0; i<17; i++) {
trkdata.rhythmpatterns[i] = count_patterns_for(i);
/* printf("%d ",count_patterns_for (i)); */
}
printf("\n");
}
@@ -466,8 +467,8 @@ void stats_header (int format, int ntrks, int ldivision)
divisionsPerBar = division*beatsPerBar;
unitDivision = divisionsPerBar/24;
lasttrack = ntrks; /* [SS] 2023-10-25 */
printf("ntrks %d\n",ntrks);
printf("ppqn %d\n",ldivision);
if (noOutput == 0) printf("ntrks %d\n",ntrks);
if (noOutput == 0) printf("ppqn %d\n",ldivision);
chordthreshold = ldivision/16; /* [SS] 2018-01-21 */
trkdata.tempo[0] = 0;
trkdata.pressure[0] = 0;
@@ -481,7 +482,7 @@ void stats_header (int format, int ntrks, int ldivision)
trkdata.numberOfGaps[i] = 0; /* [SS] 2023-09-07 */
trkdata.chanvol[i] = 0; /* [SS] 2023-10-30 */
progcolor[i] = 0;
channel2prog[i] = 0; /* [SS] 2023-06-25-8/
channel2prog[i] = 0; /* [SS] 2023-06-25-8*/
channel2nnotes[i] = 0;
chnactivity[i] = 0; /* [SS] 2018-02-02 */
}
@@ -641,7 +642,6 @@ printf("collisions = %d\n",ncollisions);
if (hasLyrics) printf("Lyrics\n");
stats_interpret_pulseCounter ();
printf("\n");
outputChannelSummary();
}
@@ -711,10 +711,6 @@ for (i=1;i<17;i++) {
printf(" %f",trkdata.pitchEntropy[i]);
} else
printf("-1 0");
nm[i].quietTime += trkdata.quietTime[i];
nm[i].used = channel_used_in_track[i];
trkdata.quietTime[i] = 0; /* in case channel i is used in another track */
trkdata.numberOfGaps[i] = 0;
if (lasttrack > 1) printf(" %d %d %d\n",tracknm.zeroCount,tracknm.stepCount,tracknm.jumpCount);
else
printf(" %d %d %d\n",nm[i-1].zeroCount,nm[i-1].stepCount,nm[i-1].jumpCount);
@@ -745,7 +741,7 @@ void stats_trackstart()
last_on_tick[i] = -1;
channel_active[i] = 0;
}
printf("trk %d \n",tracknum);
if (noOutput == 0) printf("trk %d \n",tracknum);
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 */
@@ -764,7 +760,16 @@ void stats_trackend()
if (chan == 9 || channel_used_in_track[chan+1] == 0) continue;
trkdata.pitchEntropy[chan+1] = histogram_perplexity(chanpitchhistogram +chan*12,11);
}
output_track_summary();
if (noOutput == 0) output_track_summary();
output_hasher_results();
for (i=0;i<17;i++) {
if(trkdata.notecount[i] == 0 && trkdata.chordcount[i] == 0) continue;
nm[i].quietTime += trkdata.quietTime[i];
nm[i].used = channel_used_in_track[i];
trkdata.quietTime[i] = 0; /* in case channel i is used in another track */
trkdata.numberOfGaps[i] = 0;
channel2nnotes[i] += trkdata.notecount[i] + trkdata.chordcount[i];
}
}
@@ -985,11 +990,11 @@ int beatnumber;
if (program <0 || program > 127) return; /* [SS] 2018-03-06 */
if (trkdata.program[chan+1] != 0) {
beatnumber = Mf_currtime/division;
printf("cprogram %d %d %d\n",chan+1,program,beatnumber);
if (noOutput == 0) printf("cprogram %d %d %d\n",chan+1,program,beatnumber);
/* count number of times the program was modified for a channel */
trkdata.program[0] = trkdata.program[0]+1;
} else {
printf("program %d %d\n",chan+1,program);
if (noOutput == 0) printf("program %d %d\n",chan+1,program);
trkdata.program[chan+1] = program;
}
if (channel2prog[chan+1]== 0) channel2prog[chan+1] = program; /* [SS] 2023-06-25*/
@@ -1021,6 +1026,7 @@ char *mess;
int i;
if (type == 5) hasLyrics = 1; /* [SS] 2023-10-30 */
if (type != 3) return;
if (noOutput == 1) return;
printf("metatext %d ",type);
for (i=0;i<leng;i++) printf("%c",mess[i]);
printf("\n");
@@ -1042,8 +1048,10 @@ int sf, mi;
index = sf + 7;
if (index < 0 || index >12) return;
if (mi)
if (noOutput == 0)
printf("keysig %s %d %d %6.2f\n",minor[index],sf,mi,beatnumber);
else
if (noOutput == 0)
printf("keysig %s %d %d %6.2f\n",major[index],sf,mi,beatnumber);
}
@@ -1056,9 +1064,10 @@ long ltempo;
float beatnumber;
tempo = ltempo;
beatnumber = Mf_currtime/division;
trkdata.tempo[0]++;
if (noOutput == 1) return;
if (trkdata.tempo[0] == 0) printf("tempo %6.2f bpm\n",60000000.0/tempo);
else if (trkdata.tempo[0] < 10) printf("ctempo %6.2f %6.2f\n",60000000.0/tempo,beatnumber);
trkdata.tempo[0]++;
}
@@ -1070,6 +1079,7 @@ int nn, dd, cc, bb;
beatnumber = Mf_currtime/division;
while ( dd-- > 0 )
denom *= 2;
if (noOutput == 1) return;
printf("timesig %d/%d %6.2f\n",nn,denom,beatnumber);
}
@@ -1347,12 +1357,30 @@ printf("\n");
void outputChannelSummaryCsv() {
FILE *f;
int i;
int spread;
/*f = fopen("channelDescriptor.csv","w");*/
f = stdout;
fprintf(f,"programs,cnotes,nnotes,nzeros,nsteps,njumps,rpats,pavg,spread\n");
for (i = 1; i<17; i++) {
if (nm[i].used > 0) spread = (100*(trkdata.npulses[0] - nm[i].quietTime)/trkdata.npulses[0]);
else spread=0;
fprintf(f,"%d,%d,%d,%d,%d,%d,%d,%d,%d\n",channel2prog[i],channel2nnotes[i],nm[i-1].totalNotes,\
nm[i-1].zeroCount,nm[i-1].stepCount,nm[i-1].jumpCount,\
trkdata.rhythmpatterns[i],nm[i-1].totalPitches/(1+nm[i-1].totalNotes),\
spread);
}
//fclose(f);
}
void outputChannelSummary() {
int i;
printf("\nprograms: ");
printf("programs: ");
for(i=1;i<17;i++) printf(" %d",channel2prog[i]);
printf("\ncnotes: ");
for(i=1;i<17;i++) printf(" %d",channel2nnotes[i]);
@@ -1375,6 +1403,8 @@ int i;
printf("\n");
}
void dualDrumPattern (int perc1, int perc2) {
int i;
int channel;
@@ -1723,6 +1753,13 @@ int argc;
if ((arg != -1) && (arg <argc)) {
debug = readnum(argv[arg]);
}
arg = getarg("-CSV",argc,argv);
if (arg != -1) {
noOutput = 1;
stats = 1;
}
arg = getarg("-pulseanalysis",argc,argv);
if (arg != -1) {
pulseanalysis = 1;
@@ -1816,6 +1853,7 @@ int argc;
printf("midistats version %s\n usage :\n",VERSION);
printf("midistats filename <options>\n");
printf(" -corestats\n");
printf(" -CSV\n");
printf(" -pulseanalysis\n");
printf(" -panal\n");
printf(" -ppat\n");
@@ -1843,7 +1881,9 @@ int argc;
initfunc_for_stats();
Mf_getc = filegetc;
mfread();
stats_finish();
if (noOutput == 0) stats_finish();
if (noOutput == 0) outputChannelSummary();
if (noOutput == 1) outputChannelSummaryCsv();
}
void loadEvents() {