void process(AUAudioFrameCount frameCount, AUAudioFrameCount bufferOffset) override {
for (int frameIndex = 0; frameIndex < frameCount; ++frameIndex) {
int frameOffset = int(frameIndex + bufferOffset);
baseFrequency = double(baseFrequencyRamper.getAndStep());
carrierMultiplier = double(carrierMultiplierRamper.getAndStep());
modulatingMultiplier = double(modulatingMultiplierRamper.getAndStep());
modulationIndex = double(modulationIndexRamper.getAndStep());
amplitude = double(amplitudeRamper.getAndStep());
fosc->freq = baseFrequency;
fosc->car = carrierMultiplier;
fosc->mod = modulatingMultiplier;
fosc->indx = modulationIndex;
fosc->amp = amplitude;
float temp = 0;
for (int channel = 0; channel < channels; ++channel) {
float *out = (float *)outBufferListPtr->mBuffers[channel].mData + frameOffset;
if (started) {
if (channel == 0) {
sp_fosc_compute(sp, fosc, nil, &temp);
}
*out = temp;
} else {
*out = 0.0;
}
}
}
}
uint32_t compute_buffer(int16_t *pbuf, int bufsize)
{
int i, o;
SPFLOAT fm = 0, lfo = 0;
SPFLOAT tmp = 0;
SPFLOAT r0, r1;
for(i = 0; i < bufsize / 2; i+=2) {
sp_osc_compute(sp, osc, NULL, &lfo);
fm = 0;
for(o = 0; o < NOSCS; o++) {
tmp = 0;
fosc[o]->indx = ((1.0 + lfo) * 0.5) * 6;
sp_fosc_compute(sp, fosc[o], NULL, &tmp);
fm += tmp;
}
sp_revsc_compute(sp, revsc, &fm, &fm, &r0, &r1);
pbuf[i] = (fm * 0.8 + r0 * 0.1) * 32767;
pbuf[i + 1] = (fm * 0.8 + r1 * 0.1) * 32767;
}
return 0;
}
