this won't build
This commit is contained in:
tildearrow
parent
ad7b4f61b5
commit
55eeb241cf
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@ -363,10 +363,11 @@ void FurnaceGUI::drawChanOsc() {
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std::vector<int> oscChans;
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int chans=e->getTotalChannelCount();
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ImGuiWindow* window=ImGui::GetCurrentWindow();
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ImVec2 waveform[512];
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ImGuiStyle& style=ImGui::GetStyle();
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ImVec2 waveform[1024];
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// fill buffers
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for (int i=0; i<chans; i++) {
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DivDispatchOscBuffer* buf=e->getOscBuffer(i);
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if (buf!=NULL && e->curSubSong->chanShow[i]) {
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@ -376,6 +377,192 @@ void FurnaceGUI::drawChanOsc() {
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}
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}
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// process
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for (size_t i=0; i<oscBufs.size(); i++) {
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DivDispatchOscBuffer* buf=oscBufs[i];
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ChanOscStatus* fft=oscFFTs[i];
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int ch=oscChans[i];
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if (buf!=NULL) {
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// check FFT status existence
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if (!fft->ready) {
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logD("creating FFT plan for channel %d",ch);
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fft->inBuf=(double*)fftw_malloc(FURNACE_FFT_SIZE*sizeof(double));
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fft->outBuf=(fftw_complex*)fftw_malloc(FURNACE_FFT_SIZE*sizeof(fftw_complex));
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fft->corrBuf=(double*)fftw_malloc(FURNACE_FFT_SIZE*sizeof(double));
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fft->plan=fftw_plan_dft_r2c_1d(FURNACE_FFT_SIZE,fft->inBuf,fft->outBuf,FFTW_ESTIMATE);
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fft->planI=fftw_plan_dft_c2r_1d(FURNACE_FFT_SIZE,fft->outBuf,fft->corrBuf,FFTW_ESTIMATE);
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if (fft->plan==NULL) {
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logE("failed to create plan!");
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} else if (fft->planI==NULL) {
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logE("failed to create inverse plan!");
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} else if (fft->inBuf==NULL || fft->outBuf==NULL || fft->corrBuf==NULL) {
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logE("failed to create FFT buffers");
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} else {
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fft->ready=true;
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}
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}
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if (fft->ready && e->isRunning()) {
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// the STRATEGY
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// 1. FFT of windowed signal
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// 2. inverse FFT of auto-correlation
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// 3. find size of one period
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// 4. DFT of the fundamental of ONE PERIOD
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// 5. now we can get phase information
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//
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// I have a feeling this could be simplified to two FFTs or even one...
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// if you know how, please tell me
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// initialization
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double phase=0.0;
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float minLevel=1.0f;
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float maxLevel=-1.0f;
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float dcOff=0.0f;
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bool loudEnough=false;
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fft->needle=buf->needle;
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// first FFT
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for (int j=0; j<FURNACE_FFT_SIZE; j++) {
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fft->inBuf[j]=(double)buf->data[(unsigned short)(fft->needle-displaySize*2+((j*displaySize*2)/(FURNACE_FFT_SIZE)))]/32768.0;
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if (fft->inBuf[j]>0.001 || fft->inBuf[j]<-0.001) loudEnough=true;
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fft->inBuf[j]*=0.55-0.45*cos(M_PI*(double)j/(double)(FURNACE_FFT_SIZE>>1));
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}
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// only proceed if not quiet
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if (loudEnough) {
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fftw_execute(fft->plan);
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// auto-correlation and second FFT
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for (int j=0; j<FURNACE_FFT_SIZE; j++) {
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fft->outBuf[j][0]/=FURNACE_FFT_SIZE;
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fft->outBuf[j][1]/=FURNACE_FFT_SIZE;
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fft->outBuf[j][0]=fft->outBuf[j][0]*fft->outBuf[j][0]+fft->outBuf[j][1]*fft->outBuf[j][1];
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fft->outBuf[j][1]=0;
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}
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fft->outBuf[0][0]=0;
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fft->outBuf[0][1]=0;
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fft->outBuf[1][0]=0;
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fft->outBuf[1][1]=0;
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fftw_execute(fft->planI);
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// window
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for (int j=0; j<(FURNACE_FFT_SIZE>>1); j++) {
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fft->corrBuf[j]*=1.0-((double)j/(double)(FURNACE_FFT_SIZE<<1));
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}
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// find size of period
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double waveLen=FURNACE_FFT_SIZE-1;
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double waveLenCandL=DBL_MAX;
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double waveLenCandH=DBL_MIN;
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int waveLenBottom=0;
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int waveLenTop=0;
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// find lowest point
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for (int j=(FURNACE_FFT_SIZE>>2); j>2; j--) {
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if (fft->corrBuf[j]<waveLenCandL) {
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waveLenCandL=fft->corrBuf[j];
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waveLenBottom=j;
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}
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}
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// find highest point
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for (int j=(FURNACE_FFT_SIZE>>1)-1; j>waveLenBottom; j--) {
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if (fft->corrBuf[j]>waveLenCandH) {
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waveLenCandH=fft->corrBuf[j];
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waveLen=j;
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}
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}
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waveLenTop=waveLen;
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// did we find the period size?
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if (waveLen<(FURNACE_FFT_SIZE-32)) {
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// we got pitch
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chanOscPitch[ch]=pow(1.0-(waveLen/(double)(FURNACE_FFT_SIZE>>1)),4.0);
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waveLen*=(double)displaySize*2.0/(double)FURNACE_FFT_SIZE;
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// DFT of one period (x_1)
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double dft[2];
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dft[0]=0.0;
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dft[1]=0.0;
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for (int j=fft->needle-1-(displaySize>>1)-(int)waveLen, k=0; k<waveLen; j++, k++) {
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double one=((double)buf->data[j&0xffff]/32768.0);
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double two=(double)k*(-2.0*M_PI)/waveLen;
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dft[0]+=one*cos(two);
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dft[1]+=one*sin(two);
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}
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// calculate and lock into phase
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phase=(0.5+(atan2(dft[1],dft[0])/(2.0*M_PI)));
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if (chanOscWaveCorr) {
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fft->needle-=phase*waveLen;
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}
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}
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// FFT debug code!
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if (debugFFT) {
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double maxavg=0.0;
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for (unsigned short j=0; j<(FURNACE_FFT_SIZE>>1); j++) {
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if (fabs(fft->corrBuf[j]>maxavg)) {
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maxavg=fabs(fft->corrBuf[j]);
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}
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}
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if (maxavg>0.0000001) maxavg=0.5/maxavg;
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for (unsigned short j=0; j<precision; j++) {
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float x=(float)j/(float)precision;
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float y=fft->corrBuf[(j*FURNACE_FFT_SIZE)/precision]*maxavg;
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if (j>=precision/2) {
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y=fft->inBuf[((j-(precision/2))*FURNACE_FFT_SIZE*2)/(precision)];
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}
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waveform[j]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f-y));
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}
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String cPhase=fmt::sprintf("\n%.1f (b: %d t: %d)",waveLen,waveLenBottom,waveLenTop);
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dl->AddText(inRect.Min,0xffffffff,cPhase.c_str());
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dl->AddLine(
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ImLerp(inRect.Min,inRect.Max,ImVec2((double)waveLenBottom/(double)FURNACE_FFT_SIZE,0.0)),
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ImLerp(inRect.Min,inRect.Max,ImVec2((double)waveLenBottom/(double)FURNACE_FFT_SIZE,1.0)),
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0xffffff00
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);
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dl->AddLine(
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ImLerp(inRect.Min,inRect.Max,ImVec2((double)waveLenTop/(double)FURNACE_FFT_SIZE,0.0)),
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ImLerp(inRect.Min,inRect.Max,ImVec2((double)waveLenTop/(double)FURNACE_FFT_SIZE,1.0)),
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0xff00ff00
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);
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}
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} else {
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if (debugFFT) {
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dl->AddText(inRect.Min,0xffffffff,"\nquiet");
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}
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}
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if (!debugFFT || !loudEnough) {
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fft->needle-=displaySize;
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for (unsigned short j=0; j<precision; j++) {
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float y=(float)buf->data[(unsigned short)(fft->needle+(j*displaySize/precision))]/32768.0f;
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if (minLevel>y) minLevel=y;
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if (maxLevel<y) maxLevel=y;
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}
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dcOff=(minLevel+maxLevel)*0.5f;
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for (unsigned short j=0; j<precision; j++) {
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float x=(float)j/(float)precision;
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float y=(float)buf->data[(unsigned short)(fft->needle+(j*displaySize/precision))]/32768.0f;
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y-=dcOff;
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if (y<-0.5f) y=-0.5f;
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if (y>0.5f) y=0.5f;
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y*=chanOscAmplify;
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waveform[j]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f-y));
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}
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}
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}
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}
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}
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// 0: none
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// 1: sqrt(chans)
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// 2: sqrt(chans+1)
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@ -396,6 +583,7 @@ void FurnaceGUI::drawChanOsc() {
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int rows=(oscBufs.size()+(chanOscCols-1))/chanOscCols;
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// render
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for (size_t i=0; i<oscBufs.size(); i++) {
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if (i%chanOscCols==0) ImGui::TableNextRow();
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ImGui::TableNextColumn();
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@ -409,31 +597,6 @@ void FurnaceGUI::drawChanOsc() {
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ImVec2 size=ImGui::GetContentRegionAvail();
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size.y=availY/rows;
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if (centerSettingReset) {
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buf->readNeedle=buf->needle;
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}
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// check FFT status existence
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if (fft->plan==NULL) {
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logD("creating FFT plan for channel %d",ch);
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fft->inBuf=(double*)fftw_malloc(FURNACE_FFT_SIZE*sizeof(double));
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fft->outBuf=(fftw_complex*)fftw_malloc(FURNACE_FFT_SIZE*sizeof(fftw_complex));
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fft->corrBuf=(double*)fftw_malloc(FURNACE_FFT_SIZE*sizeof(double));
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fft->plan=fftw_plan_dft_r2c_1d(FURNACE_FFT_SIZE,fft->inBuf,fft->outBuf,FFTW_ESTIMATE);
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fft->planI=fftw_plan_dft_c2r_1d(FURNACE_FFT_SIZE,fft->outBuf,fft->corrBuf,FFTW_ESTIMATE);
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if (fft->plan==NULL) {
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logE("failed to create plan!");
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}
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if (fft->planI==NULL) {
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logE("failed to create inverse plan!");
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}
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if (fft->inBuf==NULL || fft->outBuf==NULL || fft->corrBuf==NULL) {
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logE("failed to create FFT buffers");
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}
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}
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int displaySize=(float)(buf->rate)*(chanOscWindowSize/1000.0f);
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ImVec2 minArea=window->DC.CursorPos;
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ImVec2 maxArea=ImVec2(
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minArea.x+size.x,
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@ -448,7 +611,13 @@ void FurnaceGUI::drawChanOsc() {
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int precision=inRect.Max.x-inRect.Min.x;
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if (precision<1) precision=1;
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if (precision>512) precision=512;
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if (precision>1024) precision=1024;
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if (centerSettingReset) {
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buf->readNeedle=buf->needle;
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}
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int displaySize=(float)(buf->rate)*(chanOscWindowSize/1000.0f);
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ImGui::ItemSize(size,style.FramePadding.y);
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if (ImGui::ItemAdd(rect,ImGui::GetID("chOscDisplay"))) {
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@ -458,161 +627,6 @@ void FurnaceGUI::drawChanOsc() {
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waveform[j]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f));
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}
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} else {
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// the STRATEGY
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// 1. FFT of windowed signal
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// 2. inverse FFT of auto-correlation
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// 3. find size of one period
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// 4. DFT of the fundamental of ONE PERIOD
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// 5. now we can get phase information
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//
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// I have a feeling this could be simplified to two FFTs or even one...
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// if you know how, please tell me
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// initialization
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double phase=0.0;
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float minLevel=1.0f;
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float maxLevel=-1.0f;
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float dcOff=0.0f;
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unsigned short needlePos=buf->needle;
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bool loudEnough=false;
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// first FFT
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for (int j=0; j<FURNACE_FFT_SIZE; j++) {
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fft->inBuf[j]=(double)buf->data[(unsigned short)(needlePos-displaySize*2+((j*displaySize*2)/(FURNACE_FFT_SIZE)))]/32768.0;
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if (fft->inBuf[j]>0.001 || fft->inBuf[j]<-0.001) loudEnough=true;
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fft->inBuf[j]*=0.55-0.45*cos(M_PI*(double)j/(double)(FURNACE_FFT_SIZE>>1));
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}
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// only proceed if not quiet
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if (loudEnough) {
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fftw_execute(fft->plan);
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// auto-correlation and second FFT
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for (int j=0; j<FURNACE_FFT_SIZE; j++) {
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fft->outBuf[j][0]/=FURNACE_FFT_SIZE;
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fft->outBuf[j][1]/=FURNACE_FFT_SIZE;
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fft->outBuf[j][0]=fft->outBuf[j][0]*fft->outBuf[j][0]+fft->outBuf[j][1]*fft->outBuf[j][1];
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fft->outBuf[j][1]=0;
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}
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fft->outBuf[0][0]=0;
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fft->outBuf[0][1]=0;
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fft->outBuf[1][0]=0;
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fft->outBuf[1][1]=0;
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fftw_execute(fft->planI);
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// window
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for (int j=0; j<(FURNACE_FFT_SIZE>>1); j++) {
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fft->corrBuf[j]*=1.0-((double)j/(double)(FURNACE_FFT_SIZE<<1));
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}
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// find size of period
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double waveLen=FURNACE_FFT_SIZE-1;
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double waveLenCandL=DBL_MAX;
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double waveLenCandH=DBL_MIN;
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int waveLenBottom=0;
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int waveLenTop=0;
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// find lowest point
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for (int j=(FURNACE_FFT_SIZE>>2); j>2; j--) {
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if (fft->corrBuf[j]<waveLenCandL) {
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waveLenCandL=fft->corrBuf[j];
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waveLenBottom=j;
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}
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}
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// find highest point
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for (int j=(FURNACE_FFT_SIZE>>1)-1; j>waveLenBottom; j--) {
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if (fft->corrBuf[j]>waveLenCandH) {
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waveLenCandH=fft->corrBuf[j];
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waveLen=j;
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}
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}
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waveLenTop=waveLen;
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// did we find the period size?
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if (waveLen<(FURNACE_FFT_SIZE-32)) {
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// we got pitch
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chanOscPitch[ch]=pow(1.0-(waveLen/(double)(FURNACE_FFT_SIZE>>1)),4.0);
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waveLen*=(double)displaySize*2.0/(double)FURNACE_FFT_SIZE;
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// DFT of one period (x_1)
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double dft[2];
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dft[0]=0.0;
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dft[1]=0.0;
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for (int j=needlePos-1-(displaySize>>1)-(int)waveLen, k=0; k<waveLen; j++, k++) {
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double one=((double)buf->data[j&0xffff]/32768.0);
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double two=(double)k*(-2.0*M_PI)/waveLen;
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dft[0]+=one*cos(two);
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dft[1]+=one*sin(two);
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}
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// calculate and lock into phase
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phase=(0.5+(atan2(dft[1],dft[0])/(2.0*M_PI)));
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if (chanOscWaveCorr) {
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needlePos-=phase*waveLen;
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//needlePos-=(2*waveLen-fmod(displaySize,waveLen*2))*0.5;
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}
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}
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// FFT debug code!
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if (debugFFT) {
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double maxavg=0.0;
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for (unsigned short j=0; j<(FURNACE_FFT_SIZE>>1); j++) {
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if (fabs(fft->corrBuf[j]>maxavg)) {
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maxavg=fabs(fft->corrBuf[j]);
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}
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}
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if (maxavg>0.0000001) maxavg=0.5/maxavg;
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for (unsigned short j=0; j<precision; j++) {
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float x=(float)j/(float)precision;
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float y=fft->corrBuf[(j*FURNACE_FFT_SIZE)/precision]*maxavg;
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if (j>=precision/2) {
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y=fft->inBuf[((j-(precision/2))*FURNACE_FFT_SIZE*2)/(precision)];
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}
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waveform[j]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f-y));
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}
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String cPhase=fmt::sprintf("\n%.1f (b: %d t: %d)",waveLen,waveLenBottom,waveLenTop);
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dl->AddText(inRect.Min,0xffffffff,cPhase.c_str());
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dl->AddLine(
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ImLerp(inRect.Min,inRect.Max,ImVec2((double)waveLenBottom/(double)FURNACE_FFT_SIZE,0.0)),
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ImLerp(inRect.Min,inRect.Max,ImVec2((double)waveLenBottom/(double)FURNACE_FFT_SIZE,1.0)),
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0xffffff00
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);
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dl->AddLine(
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ImLerp(inRect.Min,inRect.Max,ImVec2((double)waveLenTop/(double)FURNACE_FFT_SIZE,0.0)),
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ImLerp(inRect.Min,inRect.Max,ImVec2((double)waveLenTop/(double)FURNACE_FFT_SIZE,1.0)),
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0xff00ff00
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);
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}
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} else {
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if (debugFFT) {
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dl->AddText(inRect.Min,0xffffffff,"\nquiet");
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}
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||||
}
|
||||
|
||||
if (!debugFFT || !loudEnough) {
|
||||
needlePos-=displaySize;
|
||||
for (unsigned short j=0; j<precision; j++) {
|
||||
float y=(float)buf->data[(unsigned short)(needlePos+(j*displaySize/precision))]/32768.0f;
|
||||
if (minLevel>y) minLevel=y;
|
||||
if (maxLevel<y) maxLevel=y;
|
||||
}
|
||||
dcOff=(minLevel+maxLevel)*0.5f;
|
||||
for (unsigned short j=0; j<precision; j++) {
|
||||
float x=(float)j/(float)precision;
|
||||
float y=(float)buf->data[(unsigned short)(needlePos+(j*displaySize/precision))]/32768.0f;
|
||||
y-=dcOff;
|
||||
if (y<-0.5f) y=-0.5f;
|
||||
if (y>0.5f) y=0.5f;
|
||||
y*=chanOscAmplify;
|
||||
waveform[j]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f-y));
|
||||
}
|
||||
}
|
||||
}
|
||||
ImU32 color=ImGui::GetColorU32(chanOscColor);
|
||||
if (chanOscUseGrad) {
|
||||
|
|
|
|||
|
|
@ -2056,20 +2056,22 @@ class FurnaceGUI {
|
|||
unsigned short lastCorrPos[DIV_MAX_CHANS];
|
||||
struct ChanOscStatus {
|
||||
double* inBuf;
|
||||
fftw_complex* outBuf;
|
||||
double* corrBuf;
|
||||
size_t inBufPos;
|
||||
double inBufPosFrac;
|
||||
unsigned short needle;
|
||||
fftw_complex* outBuf;
|
||||
double* corrBuf;
|
||||
bool ready;
|
||||
fftw_plan plan;
|
||||
fftw_plan planI;
|
||||
ChanOscStatus():
|
||||
inBuf(NULL),
|
||||
outBuf(NULL),
|
||||
corrBuf(NULL),
|
||||
inBufPos(0),
|
||||
inBufPosFrac(0.0f),
|
||||
needle(0),
|
||||
outBuf(NULL),
|
||||
corrBuf(NULL),
|
||||
ready(false),
|
||||
plan(NULL),
|
||||
planI(NULL) {}
|
||||
} chanOscChan[DIV_MAX_CHANS];
|
||||
|
|
|
|||
Loading…
Reference in New Issue