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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#include <time.h>
#include <qwidget.h>
#include <qstring.h>
#include <qslider.h>
#include <qcheckbox.h>
#include <qlabel.h>
#include <qvbox.h>
#include <qhbox.h>
#include <qspinbox.h>
#include <qradiobutton.h>
#include <qpushbutton.h>
#include <qdialog.h>
#include <qpainter.h>
#include <alsa/asoundlib.h>
#include "synthdata.h"
#include "m_lfo.h"
#include "port.h"
M_lfo::M_lfo(QWidget* parent, const char *name, SynthData *p_synthdata)
: Module(6, parent, name, p_synthdata) {
QString qs;
int l1;
long tm;
M_type = M_type_lfo;
setGeometry(MODULE_NEW_X, MODULE_NEW_Y, MODULE_LFO_WIDTH, MODULE_LFO_HEIGHT);
freq = 5;
phi0 = 0;
wave_period = (double)synthdata->rate / (16.0 * freq);
for (l1 = 0; l1 < MAXPOLY; l1++) {
trigger[l1] = false;
si[l1] = 0;
old_si[l1] = 0;
sa[l1] = -1;
old_sa[l1] = 0;
t[l1] = 0;
old_t[l1] = 0;
r[l1] = 0;
old_r[l1] = 0;
old_sh[l1] = 0;
sh[l1] = 0;
state[l1] = 0;
dt[l1] = 4.0 / wave_period;
}
port_M_trigger = new Port("Reset", PORT_IN, 0, this, synthdata);
port_M_trigger->move(0, 35);
port_M_trigger->outTypeAcceptList.append(outType_audio);
portList.append(port_M_trigger);
port_sine = new Port("Sine", PORT_OUT, 0, this, synthdata);
port_sine->move(width() - port_sine->width(), 55);
port_sine->outType = outType_audio;
portList.append(port_sine);
port_tri = new Port("Triangle", PORT_OUT, 1, this, synthdata);
port_tri->move(width() - port_tri->width(), 75);
port_tri->outType = outType_audio;
portList.append(port_tri);
port_sawup = new Port("Saw Up", PORT_OUT, 2, this, synthdata);
port_sawup->move(width() - port_sawup->width(), 95);
port_sawup->outType = outType_audio;
portList.append(port_sawup);
port_sawdown = new Port("Saw Down", PORT_OUT, 3, this, synthdata);
port_sawdown->move(width() - port_sawdown->width(), 115);
port_sawdown->outType = outType_audio;
portList.append(port_sawdown);
port_rect = new Port("Rectangle", PORT_OUT, 4, this, synthdata);
port_rect->move(width() - port_rect->width(), 135);
port_rect->outType = outType_audio;
portList.append(port_rect);
port_sh = new Port("S & H", PORT_OUT, 5, this, synthdata);
port_sh->move(width() - port_sh->width(), 155);
port_sh->outType = outType_audio;
portList.append(port_sh);
qs.sprintf("LFO ID %d", moduleID);
configDialog->setCaption(qs);
configDialog->addSlider(0, 100, freq, "Frequency", &freq, true);
configDialog->addSlider(0, 6.283, phi0, "Phi0", &phi0);
tm = time(NULL) % 1000000;
srand(abs(tm - 10000 * (tm % 100)));
}
M_lfo::~M_lfo() {
}
void M_lfo::noteOnEvent(int osc) {
}
void M_lfo::generateCycle() {
int l1, l2, k, len, phi0i, l2_out;
double ldsi, ldsa, ldt, ldr, ldsh, dt0, dsa;
if (!cycleReady)
{
cycleProcessing = true;
triggerData = port_M_trigger->getinputdata();
wave_period = (double)synthdata->rate / (16.0 * freq);
dsa = 2.0 / wave_period;
dt0 = 4.0 / wave_period;
phi0i = phi0 / 6.283 * wave_period;
for (l1 = 0; l1 < synthdata->poly; l1++) {
len = synthdata->cyclesize;
l2 = -1;
l2_out = 0;
do {
k = (len > 24) ? 16 : len;
l2 += k;
if (!trigger[l1] && (triggerData[l1][l2] > 0.5)) {
trigger[l1] = true;
t[l1] = 0;
state[l1] = 0;
dt[l1] = dt0;
r[l1] = -1;
si[l1] = 0;
}
if (trigger[l1] && (triggerData[l1][l2] < 0.5)) {
trigger[l1] = false;
}
if (t[l1] >= 1.0) {
state[l1] = 1;
dt[l1] = -dt0;
} else if (t[l1] <= -1.0) {
state[l1] = 3;
dt[l1] = dt0;
} else if ((state[l1] == 1) && (t[l1] < 0)) {
state[l1] = 2;
r[l1] = 1;
sh[l1] = 2.0 * (double)rand() / (double)RAND_MAX - 1.0;
} else if ((state[l1] == 3) && (t[l1] > 0)) {
state[l1] = 0;
r[l1] = -1;
sh[l1] = 2.0 * (double)rand() / (double)RAND_MAX - 1.0;
sa[l1] = -1;
}
si[l1] = (state[l1] < 2) ? t[l1] * (2.0 - t[l1]) : t[l1] * (2.0 + t[l1]);
sa[l1] += dsa;
t[l1] += dt[l1];
len -= k;
ldsi = (si[l1] - old_si[l1]) / (double)k;
ldsa = (sa[l1] - old_sa[l1]) / (double)k;
ldsh = (sh[l1] - old_sh[l1]) / (double)k;
ldt = (t[l1] - old_t[l1]) / (double)k;
ldr = (r[l1] - old_r[l1]) / (double)k;
while (k--) {
old_si[l1] += ldsi;
old_sa[l1] += ldsa;
old_sh[l1] += ldsh;
old_t[l1] += ldt;
old_r[l1] += ldr;
data[0][l1][l2_out] = old_si[l1];
data[1][l1][l2_out] = old_t[l1];
data[2][l1][l2_out] = old_sa[l1];
data[3][l1][l2_out] = -old_sa[l1];
data[4][l1][l2_out] = old_r[l1];
data[5][l1][l2_out] = old_sh[l1];
l2_out++;
}
} while(len);
}
}
cycleProcessing = false;
cycleReady = true;
}
void M_lfo::showConfigDialog() {
}
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