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GUI: much more stable osc view

This commit is contained in:
tildearrow 2022-06-03 03:32:24 -05:00
parent 0895789539
commit ead4a05348
1 changed files with 35 additions and 9 deletions
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44
src/gui/chanOsc.cpp
View File

@ -22,8 +22,9 @@
#include "imgui.h"
#include "imgui_internal.h"
#define FURNACE_FFT_SIZE 8192
#define FURNACE_FFT_SIZE 4096
#define FURNACE_FFT_RATE 80.0
#define FURNACE_FFT_CUTOFF 0.1
void FurnaceGUI::drawChanOsc() {
if (nextWindow==GUI_WINDOW_CHAN_OSC) {
@ -34,6 +35,7 @@ void FurnaceGUI::drawChanOsc() {
if (!chanOscOpen) return;
ImGui::SetNextWindowSizeConstraints(ImVec2(64.0f*dpiScale,32.0f*dpiScale),ImVec2(scrW*dpiScale,scrH*dpiScale));
if (ImGui::Begin("Oscilloscope (per-channel)",&chanOscOpen,globalWinFlags)) {
bool centerSettingReset=false;
if (ImGui::BeginTable("ChanOscSettings",3)) {
ImGui::TableNextRow();
ImGui::TableNextColumn();
@ -55,7 +57,9 @@ void FurnaceGUI::drawChanOsc() {
}
ImGui::TableNextColumn();
ImGui::Checkbox("Center waveform",&chanOscWaveCorr);
if (ImGui::Checkbox("Center waveform",&chanOscWaveCorr)) {
centerSettingReset=true;
}
ImGui::EndTable();
}
@ -98,6 +102,10 @@ void FurnaceGUI::drawChanOsc() {
ImVec2 size=ImGui::GetContentRegionAvail();
size.y=availY/rows;
if (centerSettingReset) {
buf->readNeedle=buf->needle;
}
// check FFT status existence
if (fft->plan==NULL) {
logD("creating FFT plan for channel %d",ch);
@ -129,11 +137,14 @@ void FurnaceGUI::drawChanOsc() {
} else {
unsigned short needlePos=buf->needle;
if (chanOscWaveCorr) {
/*
double fftDataRate=(FURNACE_FFT_SIZE*FURNACE_FFT_RATE)/((double)buf->rate);
while (buf->readNeedle!=needlePos) {
fft->inBufPosFrac+=fftDataRate;
while (fft->inBufPosFrac>=1.0) {
fft->inBuf[fft->inBufPos]=(double)buf->data[buf->readNeedle]/32768.0;
chanOscLP0[ch]+=FURNACE_FFT_CUTOFF*((float)buf->data[buf->readNeedle]-chanOscLP0[ch]);
chanOscLP1[ch]+=FURNACE_FFT_CUTOFF*(chanOscLP0[ch]-chanOscLP1[ch]);
fft->inBuf[fft->inBufPos]=(double)chanOscLP1[ch]/32768.0;
if (++fft->inBufPos>=FURNACE_FFT_SIZE) {
fftw_execute(fft->plan);
fft->inBufPos=0;
@ -142,7 +153,12 @@ void FurnaceGUI::drawChanOsc() {
fft->inBufPosFrac-=1.0;
}
buf->readNeedle++;
}*/
for (int i=0; i<FURNACE_FFT_SIZE; i++) {
fft->inBuf[i]=(double)buf->data[(unsigned short)(needlePos-displaySize*2+((i*displaySize*2)/FURNACE_FFT_SIZE))]/32768.0;
}
fftw_execute(fft->plan);
// find origin frequency
int point=1;
@ -159,14 +175,24 @@ void FurnaceGUI::drawChanOsc() {
// PHASE
fftw_complex& candPoint=fft->outBuf[point];
double phase=((double)buf->rate/(FURNACE_FFT_RATE*point))*(0.5+(atan2(candPoint[1],candPoint[0])/(M_PI*2)));
double phase=((double)(displaySize*2)/(double)point)*(0.5+(atan2(candPoint[1],candPoint[0])/(M_PI*2)));
//printf("%d cphase: %f\n",ch,phase*((double)buf->rate/FURNACE_FFT_RATE));
//String cPhase=fmt::sprintf("%d cphase: %f\n",point,phase);
//dl->AddText(inRect.Min,0xffffffff,cPhase.c_str());
needlePos=fft->needle;
//needlePos=fft->needle;
needlePos-=phase;
/*
int alignment=0;
for (unsigned short i=0; i<displaySize; i++) {
if (fabs(buf->data[(unsigned short)(needlePos-i)])>fabs(buf->data[(unsigned short)(needlePos-alignment)])) {
alignment=i;
}
}
needlePos-=alignment;
*/
String cPhase=fmt::sprintf("%d cphase: %f",point,phase);
dl->AddText(inRect.Min,0xffffffff,cPhase.c_str());
needlePos-=displaySize;
for (unsigned short i=0; i<512; i++) {
float x=(float)i/512.0f;