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#include "m_pd.h"
#include <math.h>
static t_class *gemnotes_countbars_class;
/* list inlet: [rhythm dur vel start]
* when the BPM changes, the offset accumulates the start time of the first
* note, and is subtracted from subsequent inter-onset times
*/
/* The Gemnotes system can only handle one voice at the moment. */
/* this object is probably where key signatures (flatsharp flag) and dynamics
* will be calculated eventually, since it has access to the pitch and
* velocity information
*/
typedef struct _gemnotes_countbars {
t_object x_obj;
t_atom outlist[5];
t_float bpm, qtime, divtime, numer, denom;
// int setoffset, iotdiv;
t_float allcount, barcount, barlen, bardiv, iot, offset, rhythm, dur, notedur, nbars;
t_float start, pitch, vel;
t_float prevstart, previot, prevdurt, prevdur, tdiff, polydiff;
t_float outstart;
int ndurs, polycompare, debug;
t_outlet *note, *bars;
} t_gemnotes_countbars;
/* There are real problems with this algorithm. Firstly it assumes that all notes
* are not polyrhythmic against the basic pulse, so manual editing of the score
* will be necessary if there are polyrhythmic note divisions. Secondly, there can
* only be one voice with chords.
* Perhaps this should all be folded into polyquant, with polyquant
* measuring all 136 MIDI timings internally...
* ...for live input transcription, there would need to be quantization
* of the inter-onset time.
* I need to learn about clocks in PD!
*/
void gemnotes_countbars_note (t_gemnotes_countbars *z, t_symbol *s, int argc, t_atom *argv)
{
float newcount = 0;
if(argc == 5)
{
z->prevstart = z->start;
z->prevdur = z->dur;
z->pitch = atom_getfloat(argv);
z->rhythm = atom_getfloat(argv+1);
z->dur = atom_getfloat(argv+2);
z->vel = atom_getfloat(argv+3);
z->start = atom_getfloat(argv+4);
z->prevdurt = z->notedur;
z->notedur = z->divtime * z->dur;
z->previot = z->iot;
z->iot = z->start - z->prevstart;
z->tdiff = z->iot - z->prevdurt;
z->outstart = 0;
/* Deal with polyrhythmic notes - a kludge until polyquant is integrated with this object */
z->polydiff = z->iot / z->divtime;
z->polycompare = (int)z->polydiff;
if(z->tdiff < 2 && z->tdiff > -2 && z->allcount > 0)
{
newcount = z->barcount + z->prevdur;
if(newcount >= z->barlen)
{
z->nbars++;
outlet_float(z->bars, z->nbars);
}
z->barcount = (float)((int)newcount % (int)z->barlen);
z->allcount++;
if(z->debug == 1) post("barcount = %d, barlen = %d, + sign",(int)z->barcount, (int)z->barlen);
z->outstart = -1;
}
else if((float)z->polycompare - z->polydiff < -2)
{
newcount = z->barcount + z->polydiff;
if(newcount >= z->barlen)
{
z->nbars++;
outlet_float(z->bars, z->nbars);
newcount -= z->barlen;
z->barcount = newcount;
}
else if(newcount < z->barlen)
{
z->barcount = newcount;
}
z->outstart = z->barcount;
if(z->debug == 1) post("barcount = %d, barlen = %d, poly",(int)z->barcount, (int)z->barlen);
}
else if(z->iot < 2 && z->allcount > 0)
{
z->outstart = -2;
post("chord");
}
else if(z->allcount == 0)
{
z->outstart = 0;
z->allcount++;
z->nbars = 1;
outlet_float(z->bars, z->nbars);
post("start");
}
else if(z->tdiff > 1)
{
//assumes that the inter-onset time is always either 1 duration or more
//this bit will need to be changed for multi-voice scenarios to be supported
//but since it is proportional notation, maybe we can minimize rests
z->ndurs = 1;
while(z->tdiff > 1)
{
z->ndurs++;
z->tdiff -= z->divtime;
}
z->allcount += (float)z->ndurs;
newcount = (float)z->ndurs;
while(newcount >= z->barlen)
{
newcount -= z->barlen;
z->nbars++;
outlet_float(z->bars, z->nbars);
}
newcount += z->barcount;
if(newcount >= z->barlen)
{
z->nbars++;
outlet_float(z->bars, z->nbars);
}
z->barcount = (float)((int)(z->barcount + (float)z->ndurs) % (int)z->barlen);
z->outstart = z->barcount;
if(z->debug == 1) post("barcount = %d, barlen = %d - floatstart",(int)z->barcount, (int)z->barlen);
}
else
{
post("iot:%f,tdiff:%f,prevdur:%f,previot:%f,nomethod",z->iot, z->tdiff, z->prevdurt, z->previot);
}
SETFLOAT(&z->outlist[0], z->outstart);
SETFLOAT(&z->outlist[1], z->pitch);
SETFLOAT(&z->outlist[2], z->dur);
SETFLOAT(&z->outlist[4], z->vel);
outlet_list(z->note, gensym("list"), 5, z->outlist);
}
}
void gemnotes_countbars_bpm (t_gemnotes_countbars *z, t_floatarg f)
{
if(f != z->bpm && f > 0)
{
post("Tempo = %f Beats Per-Minute",f);
z->bpm = f;
// z->setoffset = 1;
z->qtime = 60000/f;
z->divtime = z->qtime / (z->bardiv / 4);
z->notedur = z->divtime * z->dur;
}
}
void gemnotes_countbars_bar (t_gemnotes_countbars *z, t_symbol *s, int argc, t_atom *argv)
{
if(argc > 2)
{
z->numer = atom_getfloat(argv);
z->denom = atom_getfloat(argv+1);
z->bardiv = atom_getfloat(argv+2);
z->barlen = z->numer / z->denom * z->bardiv;
z->divtime = z->qtime / (z->bardiv / 4);
z->prevdurt = z->divtime;
z->barcount = 0;
post("Bar of %d/%d, divisions: %d", (int)z->numer, (int)z->denom, (int)z->bardiv);
}
else if(argc > 1)
{
z->numer = atom_getfloat(argv);
z->denom = atom_getfloat(argv+1);
z->barlen = z->numer / z->denom * z->bardiv;
z->divtime = z->qtime / (z->bardiv / 4);
z->prevdurt = z->divtime;
z->barcount = 0;
post("Bar of %d/%d, divisions: %d", (int)z->numer, (int)z->denom, (int)z->bardiv);
}
else if(argc > 0)
{
z->numer = atom_getfloat(argv);
z->barlen = z->numer / z->denom * z->bardiv;
z->divtime = z->qtime / (z->bardiv / 4);
z->prevdurt = z->divtime;
z->barcount = 0;
post("Bar of %d/%d, divisions: %d", (int)z->numer, (int)z->denom, (int)z->bardiv);
}
}
void gemnotes_countbars_debug(t_gemnotes_countbars *z, t_floatarg f)
{
z->debug = f != 0 ? (int)f : 0;
}
void gemnotes_countbars_reset(t_gemnotes_countbars *z)
{
z->allcount = z->barcount = 0;
z->nbars = 1;
}
void *gemnotes_countbars_new(t_symbol *s, int argc, t_atom *argv)
{
t_gemnotes_countbars *z = (t_gemnotes_countbars *)pd_new(gemnotes_countbars_class);
int i;
for(i=0;i<5;i++) SETFLOAT(&z->outlist[i], 0);
z->bpm = 120;
z->numer = 4;
z->denom = 4;
z->bardiv = 16;
// args: bpm, numer, denom, div
if(argc > 0) z->bpm = atom_getfloat(argv);
if(argc > 1) z->numer = atom_getfloat(argv+1);
if(argc > 2) z->denom = atom_getfloat(argv+2);
if(argc > 3) z->bardiv = atom_getfloat(argv+3);
z->qtime = 60000/z->bpm;
z->divtime = z->qtime / (z->bardiv / z->denom);
z->prevdurt = z->divtime;
z->barlen = z->numer / z->denom * z->bardiv;
z->barcount = z->allcount = 0;
z->previot = 0;
z->prevstart = -125;
z->nbars = 1;
z->note = outlet_new(&z->x_obj, gensym("list"));
z->bars = outlet_new(&z->x_obj, gensym("float"));
return(void *)z;
}
void gemnotes_countbars_setup(void)
{
gemnotes_countbars_class = class_new(gensym("gemnotes_countbars"),
(t_newmethod)gemnotes_countbars_new,
0, sizeof(t_gemnotes_countbars),
0, A_GIMME, 0);
post("gemnotes_countbars - yu need this for realtime notation...");
post("version 0.4...by Ed Kelly 2010 - morph_2016@yahoo.co.uk");
class_addmethod(gemnotes_countbars_class, (t_method)gemnotes_countbars_note, gensym("note"), A_GIMME, 0);
class_addmethod(gemnotes_countbars_class, (t_method)gemnotes_countbars_bar, gensym("bar"), A_GIMME, 0);
class_addmethod(gemnotes_countbars_class, (t_method)gemnotes_countbars_bpm, gensym("bpm"), A_DEFFLOAT, 0);
class_addmethod(gemnotes_countbars_class, (t_method)gemnotes_countbars_reset, gensym("reset"), A_DEFFLOAT, 0);
class_addmethod(gemnotes_countbars_class, (t_method)gemnotes_countbars_debug, gensym("debug"), A_DEFFLOAT, 0);
}
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