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fix the crash

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the hell? one double and suddenly it crashes on Android?
This commit is contained in:
tildearrow 2023-09-03 17:18:31 -05:00
parent 7ea5f2de07
commit 83c64aa4b4
1 changed files with 23 additions and 31 deletions
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54
src/gui/chanOsc.cpp
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@ -23,7 +23,6 @@
#include "imgui.h"
#include "imgui_internal.h"
#include "misc/cpp/imgui_stdlib.h"
#include <complex>
#define FURNACE_FFT_SIZE 4096
#define FURNACE_FFT_RATE 80.0
@ -422,6 +421,15 @@ void FurnaceGUI::drawChanOsc() {
fft->corrBuf=(double*)fftw_malloc(FURNACE_FFT_SIZE*sizeof(double));
fft->plan=fftw_plan_dft_r2c_1d(FURNACE_FFT_SIZE,fft->inBuf,fft->outBuf,FFTW_ESTIMATE);
fft->planI=fftw_plan_dft_c2r_1d(FURNACE_FFT_SIZE,fft->outBuf,fft->corrBuf,FFTW_ESTIMATE);
if (fft->plan==NULL) {
logE("failed to create plan!");
}
if (fft->planI==NULL) {
logE("failed to create inverse plan!");
}
if (fft->inBuf==NULL || fft->outBuf==NULL || fft->corrBuf==NULL) {
logE("failed to create FFT buffers");
}
}
int displaySize=(float)(buf->rate)*(chanOscWindowSize/1000.0f);
@ -465,20 +473,16 @@ void FurnaceGUI::drawChanOsc() {
float maxLevel=-1.0f;
float dcOff=0.0f;
unsigned short needlePos=buf->needle;
//unsigned short needlePosOrig=needlePos;
// first FFT
for (int j=0; j<(FURNACE_FFT_SIZE); j++) {
for (int j=0; j<FURNACE_FFT_SIZE; j++) {
fft->inBuf[j]=(double)buf->data[(unsigned short)(needlePos-displaySize*2+((j*displaySize*2)/(FURNACE_FFT_SIZE)))]/32768.0;
fft->inBuf[j]*=0.55-0.45*cos(M_PI*(double)j/(double)(FURNACE_FFT_SIZE>>1));
}
//memset(&fft->inBuf[FURNACE_FFT_SIZE>>1],0,sizeof(double)*(FURNACE_FFT_SIZE>>1));
fftw_execute(fft->plan);
// auto-correlation and second FFT
for (int j=0; j<FURNACE_FFT_SIZE; j++) {
//fft->outBuf[j][0]-=fft->outBuf[0][0];
//fft->outBuf[j][1]-=fft->outBuf[0][1];
fft->outBuf[j][0]/=FURNACE_FFT_SIZE;
fft->outBuf[j][1]/=FURNACE_FFT_SIZE;
fft->outBuf[j][0]=fft->outBuf[j][0]*fft->outBuf[j][0]+fft->outBuf[j][1]*fft->outBuf[j][1];
@ -488,22 +492,14 @@ void FurnaceGUI::drawChanOsc() {
fft->outBuf[0][1]=0;
fft->outBuf[1][0]=0;
fft->outBuf[1][1]=0;
//memset(&fft->outBuf[FURNACE_FFT_SIZE],0,sizeof(fftw_complex)*FURNACE_FFT_SIZE);
fftw_execute(fft->planI);
// high-pass
/*for (int j=1; j<(FURNACE_FFT_SIZE>>1); j++) {
fft->corrBuf[j]-=fft->corrBuf[j-1];
}*/
// find size of period
double waveLen=FURNACE_FFT_SIZE;
double waveLen=FURNACE_FFT_SIZE-1;
double waveLenCandL=DBL_MAX;
double waveLenCandH=DBL_MIN;
int waveLenBottom=0;
/*
int waveLenTop=0;
double waveLenCandL2=DBL_MAX;*/
// find lowest point
for (int j=(FURNACE_FFT_SIZE>>1); j>2; j--) {
if (fft->corrBuf[j]<waveLenCandL) {
@ -519,25 +515,21 @@ void FurnaceGUI::drawChanOsc() {
waveLen=j;
}
}
/*
// find next lowest point
for (int j=(FURNACE_FFT_SIZE>>1); j>waveLenTop; j--) {
if (fft->corrBuf[j]<waveLenCandL2) {
waveLenCandL2=fft->corrBuf[j];
waveLen=j-waveLenTop;
}
}*/
waveLen*=(double)displaySize*2.0/(double)FURNACE_FFT_SIZE;
// DFT of one period (x_1)
std::complex<double> dft(0,0);
double dft[2];
dft[0]=0.0;
dft[1]=0.0;
for (int j=0; j<waveLen; j++) {
dft+=((double)buf->data[(unsigned short)(needlePos-waveLen+j)]/32768.0)*std::exp((-std::complex<double>(0.0,1.0)*2.0*M_PI/(double)waveLen)*(double)j);
double one=((double)buf->data[(unsigned short)(needlePos-((int)waveLen)+j)&0xffff]/32768.0);
double two=(double)j*(-2.0*M_PI)/waveLen;
dft[0]+=one*cos(two);
dft[1]+=one*sin(two);
}
// calculate and lock into phase
double phase=(0.5+(atan2(dft.imag(),dft.real())/(2.0*M_PI)));
//phase-=sin(4.0*phase*M_PI)/21.0;
double phase=(0.5+(atan2(dft[1],dft[0])/(2.0*M_PI)));
double maxavg=0.0;
for (unsigned short j=0; j<(FURNACE_FFT_SIZE>>1); j++) {
@ -549,7 +541,7 @@ void FurnaceGUI::drawChanOsc() {
if (chanOscWaveCorr) {
needlePos-=phase*waveLen;
needlePos-=displaySize/waveLen;
//needlePos-=displaySize/waveLen;
}
//chanOscPitch[ch]=(float)point/32.0f;
@ -571,7 +563,7 @@ void FurnaceGUI::drawChanOsc() {
}
// FFT debug code!
if (debugFFT) {
/*if (debugFFT) {
for (unsigned short j=0; j<precision; j++) {
float x=(float)j/(float)precision;
float y=fft->corrBuf[(j*FURNACE_FFT_SIZE)/precision]*maxavg;
@ -581,7 +573,7 @@ void FurnaceGUI::drawChanOsc() {
waveform[j]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f-y));
}
}
}*/
/*String cPhase=fmt::sprintf("\n%.1f - %.2f (%.2f %.2f)",waveLen,phase,dft.imag(),dft.real());
dl->AddText(inRect.Min,0xffffffff,cPhase.c_str());*/