int process(jack_nframes_t nframes, void *arg) {
sample_t *in = jack_port_get_buffer(input_port, nframes);
void *midi_out = jack_port_get_buffer(output_port, nframes);
jack_midi_clear_buffer(midi_out);
for (unsigned int i = 0; i < nframes; i++) {
sample_t cur = in[i];
last_idx = wrap(last_idx + 1, LAST_WIDTH);
last[last_idx] = fabs(cur);
for (unsigned int j = 0; j < LAST_WIDTH; j++) {
fft_in[j] = last[wrap(last_idx + j, LAST_WIDTH)];
}
fftwf_execute(fft_plan);
power = 0;
for (unsigned int j = 0; j < FFT_SIZE; j++) {
power += fabs(fft_out[j]);
}
power /= FFT_SIZE;
if (!hit && (power > 2)) {
hit = true;
DEBUG("HIT power = %.3f \n", power);
send_note(midi_out, i, 0.5);
} else if (hit && (power < 0.9)) {
hit = false;
DEBUG("UNHIT power = %.3f \n", power);
}
static float minp;
static float maxp;
if (delay == 0) {
DEBUG("power ∈ [%+2.3f, %+2.3f] \r", minp, maxp);
/* unsigned int star = power; */
/* for (unsigned int j = 0; j < star; j++) DEBUG(" "); */
/* DEBUG("*\r"); */
delay = 30000;
minp = 1e9;
maxp = -1e9;
} else {
if (power < minp) minp = power;
if (power > maxp) maxp = power;
--delay;
}
}
return 0;
}
static long new_midi_ioctl(struct file *f, unsigned int cmd, unsigned long arg) {
dbg("`cmidid_ioctl' called with f=%p, cmd=%d, arg=%lu\n", f, cmd, arg);
switch (cmd) {
case NEWMIDI_BLA:
dbg("bla\n");
break;
case NEWMIDI_BLUPP:
dbg("blupp\n");
send_note(0x3b, 127);
break;
default:
dbg("didnt work\n");
}
return 0;
}