void pdsp::BLEPSaw::oscillate( float* outputBuffer, const float* phaseBuffer, int bufferSize) noexcept {
//TRIVIAL SAW
genSaw(outputBuffer, phaseBuffer, bufferSize);
//trivialSawDSP(bufferSize, outputBuffer, phaseBuffer);
//BLEP CORRECTION
int incBufferState;
const float* incBuffer = processInput(input_inc, incBufferState);
//float tableCenter = blepTable->length_f * 0.5 - 1.0;
//Logger::writeToLog(String(tableCenter));
if (incBufferState == AudioRate){ //phase increment is always changing
BLEPFMWaveformDSP(bufferSize, outputBuffer, phaseBuffer, incBuffer,
blepTable->buffer, blepTable->points, blepTable->length_f, interpolateBLEP);
}else { //phase increment is always the same
BLEPWaveformDSP(bufferSize, outputBuffer, phaseBuffer, incBuffer[0],
blepTable->buffer, blepTable->points, blepTable->length_f, interpolateBLEP);
}
}
void interpret(unsigned char *bfr, unsigned int in, const unsigned long &len)
{
//0000 0000 0000 0000 0000 0000 0000 0000
//1000 0000 0000 0000 0000 0000 0000 0000 active
//0111 0000 0000 0000 0000 0000 0000 0000 octave
//0000 1111 0000 0000 0000 0000 0000 0000 note C C# D D# E F F# G G# A A# B
//0000 0000 1111 1100 0000 0000 0000 0000 instrument
//0000 0000 0000 0011 1111 0000 0000 0000 volume 64
//0000 0000 0000 0000 0000 1111 1111 1111 effect
const bool on = (in & 0x80000000) >> (4*7)+3;
if(!on)
return;
unsigned char oct = ((in & R_OCTAVE) >> (4*7)) + 1;
unsigned char note = (in & R_NOTE) >> (4*6);
unsigned char inst = (in & R_INSTRUMENT) >> (4*4+2);
unsigned char vol = (in & R_VOLUME) >> (4*3);
unsigned char fx = (in & R_EFFECT) >> (4*2);
unsigned char fxp1 = (in & R_FXPARAM1) >> (4);
unsigned char fxp2 = (in & R_FXPARAM2);
unsigned int period = 128 / (oct);
//period = period - note*(period - 128/(oct+1))/12.0;
period = period - note*(period/24.0);
unsigned char amplitude = (vol/63.0f)*255;
switch(inst)
{
case INST_SILENCE: //silence
genSilence(bfr, 128, len);
std::cerr << "Silence length=" << len << '\n';
break;
case INST_SQR: //sqr
genSqr(bfr, period, amplitude, len);
std::cerr << "Square [" << int(oct) << ',' << int(note) << "] period=" << period << " amplitude=" << static_cast<int>(amplitude) << " length=" << len << '\n';
break;
case INST_SAW: //saw
genSaw(bfr, period, amplitude, len);
std::cerr << "Saw [" << int(oct) << ',' << int(note) << "] period=" << period << " amplitude=" << static_cast<int>(amplitude) << " length=" << len << '\n';
break;
case INST_TRI: //tri
genTri(bfr, period, amplitude, len);
std::cerr << "Triangle [" << int(oct) << ',' << int(note) << "] period=" << period << " amplitude=" << static_cast<int>(amplitude) << " length=" << len << '\n';
break;
case INST_SINE: // sine
genSine(bfr, period, amplitude, len);
std::cerr << "Sine [" << int(oct) << ',' << int(note) << "] period=" << period << " amplitude=" << static_cast<int>(amplitude) << " length=" << len << '\n';
break;
default:
std::cerr << "Instrument " << inst << " does not exist!\n";
}
}