83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
/*
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* Filename: fmtest.cpp
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*
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* Description:
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*
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*
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* Version:
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* Created: Sun Mar 8 08:12:43 2020
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* Revision: None
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* Author: Rachel Fae Fox (foxiepaws),fox@foxiepa.ws
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*
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*/
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#include "FM/Engine.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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using namespace amalgam;
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int16_t toint16(double i) {
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double temp = i *= 32767;
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return floor(temp);
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}
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void writeBytes(FILE* file, char* bytes, unsigned int count) {
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for (int i = 0; i < count ; i++)
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putc(bytes[i],file);
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}
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int main(int argc, char** argv){
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FM::Engine<2> *f = new FM::Engine<2>();
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f->getOperator(0)->setAll(2.0,0.0,0.0);
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f->getOperator(0)->getEnvelope()->setAttackTime(1.0);
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f->getOperator(0)->getEnvelope()->setDecayTime(0.5);
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f->getOperator(0)->getEnvelope()->setMaxLevel(1.0);
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f->getOperator(0)->getEnvelope()->setModMode(true); // play until reset.
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f->getOperator(1)->getEnvelope()->setReleaseTime(2.5);
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f->getOperator(1)->setAll(1.0,0.0,0.0);
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f->setGainMatrix(0,0,0.0); // op1 fbl = 0
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f->setGainMatrix(0,1,1.0); // op1 -> op2 = 1
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f->setGainMatrix(1,0,0.0); // op2 -> op1 = 0
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f->setGainMatrix(1,2,1.0); // op2 -> out = 1
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f->freq = 440;
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f->gate = true;
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FILE* w = fopen("testwav.wav", "w");
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fprintf(w,"RIFF");
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double seconds = 20;
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uint32_t srate = 44100;
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unsigned int samples= floor(seconds*srate);
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uint16_t bps = 16;
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uint16_t channels = 2;
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uint32_t datasize = ((bps/8)*channels*samples);
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uint32_t fmtsize = 16;
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uint16_t type = 1;
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uint32_t riffsize = 20 + fmtsize + datasize;
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uint32_t byterate = srate * 1 * (bps/8);
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uint16_t blockalign = channels * (bps/8);
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char* l;
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writeBytes(w,(char*) &riffsize,4);
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fprintf(w,"WAVEfmt ");
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// size
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writeBytes(w,(char*) &fmtsize,4);
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// type
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writeBytes(w,(char*) &type,2);
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writeBytes(w,(char*) &channels,2);
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writeBytes(w,(char*) &srate,4);
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writeBytes(w,(char*) &byterate,4);
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writeBytes(w,(char*) &blockalign,2);
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writeBytes(w,(char*) &bps, 2);
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fprintf(w,"data");
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writeBytes(w,(char*) &datasize, 4);
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for (int s = 0; s < samples; s++) {
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std::pair<double,double> st = (*f)();
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int16_t l = toint16(st.first/4.0);
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int16_t r = toint16(st.second/4.0);
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writeBytes(w,(char*) &l,2);
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writeBytes(w,(char*) &r,2);
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}
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fclose(w);
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return 0;
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}
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