static void init(state_t* state)
{
state->color = (color_t) {0.0, 0.0, 0.0, 0.0};
freq_init(&state->freq_state, 0.5, 0);
state->type = OSC_SINE;
state->last_t = 0;
state->kx = 1.0;
state->ky = 1.0;
state->rho = 0.5;
}
int num_to_freq(int n, unsigned int *f) {
freq_init();
if (f != NULL && n>=0 && n<32) {
//*f = (unsigned int)floor(BB_BASEFREQUENCY * pow(BB_SEMITONE, n));
*f = (unsigned int)floor(frequencies[n]);
return 0;
}
return -1;
}
int freq_to_num(unsigned int f, int *n) {
/*
frequencies[0] = (unsigned int)floor(BB_BASEFREQUENCY * pow(BB_SEMITONE, 0));
frequencies[31] = (unsigned int)floor(BB_BASEFREQUENCY * pow(BB_SEMITONE, 31));
if (n != NULL &&
f >= frequencies[0]-BB_THRESHOLD*pow(BB_SEMITONE, 0) &&
f <= frequencies[31]+BB_THRESHOLD*pow(BB_SEMITONE, 31)) {
unsigned int i;
for (i=0; i<32; i++) {
unsigned int freq = (unsigned int)floor(BB_BASEFREQUENCY * pow(BB_SEMITONE, i));
frequencies[i] = freq;
if (abs(frequencies[i] - f) <= BB_THRESHOLD*pow(BB_SEMITONE, i)) {
//if (abs(frequencies[i] - f) <= BB_THRESHOLD) {
*n = i;
return 0;
}
}
}
*/
freq_init();
if (n != NULL &&
f >= frequencies[0]-BB_THRESHOLD &&
f <= frequencies[31]+BB_THRESHOLD) {
unsigned int i;
for (i=0; i<32; i++) {
if (abs(frequencies[i] - f) <= BB_THRESHOLD) {
*n = i;
return 0;
}
}
}
/*
if (n!=NULL && f>freq_range[0].start && f<freq_range[31].end) {
unsigned int i;
for (i=0; i<32; i++) {
if (f>freq_range[i].start && f<freq_range[i].end) {
*n = i;
return 0;
}
}
}
*/
return -1;
}
