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furnace/src/gui/chanOsc.cpp

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/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2023 tildearrow and contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#define _USE_MATH_DEFINES
#include "gui.h"
#include "../ta-log.h"
#include "imgui.h"
#include "imgui_internal.h"
#include "misc/cpp/imgui_stdlib.h"
#define FURNACE_FFT_SIZE 4096
#define FURNACE_FFT_RATE 80.0
#define FURNACE_FFT_CUTOFF 0.1
const char* chanOscRefs[]={
"None (0%)",
"None (50%)",
"None (100%)",
"Frequency",
"Volume",
"Channel",
"Brightness",
"Note Trigger"
};
const char* autoColsTypes[]={
"Off",
"Mode 1",
"Mode 2",
"Mode 3"
};
float FurnaceGUI::computeGradPos(int type, int chan) {
switch (type) {
case GUI_OSCREF_NONE:
return 0.0f;
break;
case GUI_OSCREF_CENTER:
return 0.5f;
break;
case GUI_OSCREF_MAX:
return 1.0f;
break;
case GUI_OSCREF_FREQUENCY:
return chanOscPitch[chan];
break;
case GUI_OSCREF_VOLUME:
return chanOscVol[chan];
break;
case GUI_OSCREF_CHANNEL:
return (float)chan/(float)(e->getTotalChannelCount()-1);
break;
case GUI_OSCREF_BRIGHT:
return chanOscBright[chan];
break;
case GUI_OSCREF_NOTE_TRIGGER:
return keyHit1[chan];
break;
}
return 0.0f;
}
void FurnaceGUI::calcChanOsc() {
std::vector<DivDispatchOscBuffer*> oscBufs;
std::vector<ChanOscStatus*> oscFFTs;
std::vector<int> oscChans;
int chans=e->getTotalChannelCount();
for (int i=0; i<chans; i++) {
int tryAgain=i;
DivDispatchOscBuffer* buf=e->getOscBuffer(i);
while (buf==NULL) {
if (--tryAgain<0) break;
buf=e->getOscBuffer(tryAgain);
}
if (buf!=NULL && e->curSubSong->chanShow[i]) {
// 30ms should be enough
int displaySize=(float)(buf->rate)*0.03f;
if (e->isRunning()) {
float minLevel=1.0f;
float maxLevel=-1.0f;
unsigned short needlePos=buf->needle;
needlePos-=displaySize;
for (unsigned short i=0; i<512; i++) {
float y=(float)buf->data[(unsigned short)(needlePos+(i*displaySize/512))]/32768.0f;
if (minLevel>y) minLevel=y;
if (maxLevel<y) maxLevel=y;
}
float estimate=pow(maxLevel-minLevel,0.5f);
if (estimate>1.0f) estimate=1.0f;
chanOscVol[i]=MAX(chanOscVol[i]*0.87f,estimate);
}
} else {
chanOscVol[i]=MAX(chanOscVol[i]*0.87f,0.0f);
}
if (chanOscVol[i]<0.00001f) chanOscVol[i]=0.0f;
}
}
void FurnaceGUI::drawChanOsc() {
if (nextWindow==GUI_WINDOW_CHAN_OSC) {
chanOscOpen=true;
ImGui::SetNextWindowFocus();
nextWindow=GUI_WINDOW_NOTHING;
}
if (!chanOscOpen) return;
ImGui::SetNextWindowSizeConstraints(ImVec2(64.0f*dpiScale,32.0f*dpiScale),ImVec2(canvasW,canvasH));
if (ImGui::Begin("Oscilloscope (per-channel)",&chanOscOpen,globalWinFlags)) {
bool centerSettingReset=false;
ImDrawList* dl=ImGui::GetWindowDrawList();
if (chanOscOptions) {
if (ImGui::BeginTable("ChanOscSettings",2)) {
ImGui::TableNextRow();
ImGui::TableNextColumn();
ImGui::AlignTextToFramePadding();
ImGui::Text("Columns");
ImGui::SameLine();
ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
if (ImGui::InputInt("##COSColumns",&chanOscCols,1,1)) {
if (chanOscCols<1) chanOscCols=1;
if (chanOscCols>64) chanOscCols=64;
}
ImGui::TableNextColumn();
ImGui::Text("Size (ms)");
ImGui::SameLine();
ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
if (ImGui::InputFloat("##COSWinSize",&chanOscWindowSize,1.0f,1.0f)) {
if (chanOscWindowSize<1.0f) chanOscWindowSize=1.0f;
if (chanOscWindowSize>50.0f) chanOscWindowSize=50.0f;
}
ImGui::TableNextRow();
ImGui::TableNextColumn();
ImGui::AlignTextToFramePadding();
ImGui::Text("Automatic columns");
ImGui::SameLine();
ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
const char* previewColType=autoColsTypes[chanOscAutoColsType&3];
if (ImGui::BeginCombo("##AutoCols",previewColType)) {
for (int j=0; j<4; j++) {
const bool isSelected=(chanOscAutoColsType==j);
if (ImGui::Selectable(autoColsTypes[j],isSelected)) chanOscAutoColsType=j;
if (isSelected) ImGui::SetItemDefaultFocus();
}
ImGui::EndCombo();
}
ImGui::TableNextColumn();
if (ImGui::Checkbox("Center waveform",&chanOscWaveCorr)) {
centerSettingReset=true;
}
ImGui::EndTable();
}
ImGui::AlignTextToFramePadding();
ImGui::Text("Amplitude");
ImGui::SameLine();
ImGui::SetNextItemWidth(ImGui::GetContentRegionAvail().x);
if (CWSliderFloat("##COSAmp",&chanOscAmplify,0.0f,2.0f)) {
if (chanOscAmplify<0.0f) chanOscAmplify=0.0f;
if (chanOscAmplify>2.0f) chanOscAmplify=2.0f;
}
ImGui::Checkbox("Gradient",&chanOscUseGrad);
if (chanOscUseGrad) {
if (chanOscGradTex==NULL) {
chanOscGradTex=rend->createTexture(true,chanOscGrad.width,chanOscGrad.height);
if (chanOscGradTex==NULL) {
logE("error while creating gradient texture!");
} else {
updateChanOscGradTex=true;
}
}
if (ImGui::BeginTable("ChanOscGradSet",2)) {
ImGui::TableSetupColumn("c0",ImGuiTableColumnFlags_WidthFixed);
ImGui::TableSetupColumn("c1",ImGuiTableColumnFlags_WidthStretch);
ImGui::TableNextRow();
ImGui::TableNextColumn();
if (chanOscGradTex!=NULL) {
if (updateChanOscGradTex) {
chanOscGrad.render();
if (rend->updateTexture(chanOscGradTex,chanOscGrad.grad.get(),chanOscGrad.width*4)) {
updateChanOscGradTex=false;
} else {
logE("error while updating gradient texture!");
}
}
ImVec2 gradLeft=ImGui::GetCursorPos();
ImVec2 gradSize=ImVec2(400.0f*dpiScale,400.0f*dpiScale);
ImGui::Image(rend->getTextureID(chanOscGradTex),gradSize);
ImVec2 gradLeftAbs=ImGui::GetItemRectMin();
if (ImGui::IsItemClicked(ImGuiMouseButton_Right)) {
if (chanOscGrad.points.size()<32) {
chanOscGrad.points.push_back(Gradient2DPoint(
(ImGui::GetMousePos().x-gradLeftAbs.x)/gradSize.x,
(ImGui::GetMousePos().y-gradLeftAbs.y)/gradSize.y
));
updateChanOscGradTex=true;
}
}
ImVec2 oldCurPos=ImGui::GetCursorPos();
int index=0;
int removePoint=-1;
for (Gradient2DPoint& i: chanOscGrad.points) {
ImGui::PushID(index+16);
ImGui::SetCursorPos(ImVec2(gradLeft.x+i.x*gradSize.x-8.0*dpiScale,gradLeft.y+i.y*gradSize.y-8.0*dpiScale));
if (ImGui::InvisibleButton("gradPoint",ImVec2(16.0*dpiScale,16.0*dpiScale))) {
if (!i.grab) {
ImGui::OpenPopup("gradPointSettings");
}
}
if (ImGui::IsItemHovered() || ImGui::IsItemActive()) {
ImGui::SetTooltip("(%.1f, %.1f)",i.x*100.0f,(1.0f-i.y)*100.0f);
}
if (ImGui::IsItemClicked(ImGuiMouseButton_Middle)) {
removePoint=index;
}
if (ImGui::IsItemActive()) {
float mX=(ImGui::GetMousePos().x-gradLeftAbs.x)/gradSize.x;
float mY=(ImGui::GetMousePos().y-gradLeftAbs.y)/gradSize.y;
if (i.grab || (fabs(i.x-mX)>0.015 || fabs(i.y-mY)>0.015)) {
i.x=mX;
i.y=mY;
i.grab=true;
if (i.x<0) i.x=0;
if (i.x>1) i.x=1;
if (i.y<0) i.y=0;
if (i.y>1) i.y=1;
updateChanOscGradTex=true;
}
} else {
i.grab=false;
i.prevX=i.x;
i.prevY=i.y;
}
if (ImGui::BeginPopup("gradPointSettings",ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_AlwaysAutoResize)) {
if (ImGui::ColorPicker4("Color",(float*)&i.color)) {
updateChanOscGradTex=true;
}
ImGui::AlignTextToFramePadding();
ImGui::Text("Distance");
ImGui::SameLine();
float pDist=i.distance*100.0f;
if (ImGui::SliderFloat("##PDistance",&pDist,0.0f,150.0f,"%.1f%%")) {
i.distance=pDist/100.0f;
updateChanOscGradTex=true;
}
ImGui::AlignTextToFramePadding();
ImGui::Text("Spread");
ImGui::SameLine();
float pSpread=i.spread*100.0f;
if (ImGui::SliderFloat("##PSpread",&pSpread,0.0f,150.0f,"%.1f%%")) {
i.spread=pSpread/100.0f;
updateChanOscGradTex=true;
}
pushDestColor();
if (ImGui::Button("Remove")) {
removePoint=index;
ImGui::CloseCurrentPopup();
}
popDestColor();
ImGui::EndPopup();
}
dl->AddCircle(ImVec2(gradLeftAbs.x+i.x*gradSize.x,gradLeftAbs.y+i.y*gradSize.y),8.0*dpiScale,ImGui::ColorConvertFloat4ToU32(ImVec4(0.5,0.5,0.5,1.0)),6,2.0f*dpiScale);
dl->AddCircle(ImVec2(gradLeftAbs.x+i.x*gradSize.x,gradLeftAbs.y+i.y*gradSize.y),5.0*dpiScale,ImGui::ColorConvertFloat4ToU32(ImVec4(0.1,0.1,0.1,1.0)),6,2.0f*dpiScale);
ImGui::PopID();
index++;
}
ImGui::SetCursorPos(oldCurPos);
if (removePoint>=0) {
chanOscGrad.points.erase(chanOscGrad.points.begin()+removePoint);
updateChanOscGradTex=true;
}
}
ImGui::TableNextColumn();
if (ImGui::ColorEdit4("Background",(float*)&chanOscGrad.bgColor)) {
updateChanOscGradTex=true;
}
ImGui::Combo("X Axis##AxisX",&chanOscColorX,chanOscRefs,GUI_OSCREF_MAX);
ImGui::Combo("Y Axis##AxisY",&chanOscColorY,chanOscRefs,GUI_OSCREF_MAX);
ImGui::EndTable();
}
} else {
ImGui::SetNextItemWidth(400.0f*dpiScale);
ImGui::ColorPicker4("Color",(float*)&chanOscColor);
}
ImGui::AlignTextToFramePadding();
ImGui::Text("Text format:");
ImGui::SameLine();
ImGui::InputText("##TextFormat",&chanOscTextFormat);
if (ImGui::IsItemHovered()) {
if (ImGui::BeginTooltip()) {
ImGui::TextUnformatted(
"format guide:\n"
"- %c: channel name\n"
"- %C: channel short name\n"
"- %d: channel number (starting from 0)\n"
"- %D: channel number (starting from 1)\n"
"- %n: channel note\n"
"- %i: instrument name\n"
"- %I: instrument number (decimal)\n"
"- %x: instrument number (hex)\n"
"- %s: chip name\n"
"- %p: chip part number\n"
"- %S: chip ID\n"
"- %v: volume (decimal)\n"
"- %V: volume (percentage)\n"
"- %b: volume (hex)\n"
"- %%: percent sign"
);
ImGui::EndTooltip();
}
}
ImGui::ColorEdit4("Text color",(float*)&chanOscTextColor);
if (ImGui::Button("OK")) {
chanOscOptions=false;
}
} else {
ImGui::PushStyleVar(ImGuiStyleVar_CellPadding,ImVec2(0.0f,0.0f));
float availY=ImGui::GetContentRegionAvail().y;
if (ImGui::BeginTable("ChanOsc",chanOscCols,ImGuiTableFlags_Borders)) {
std::vector<DivDispatchOscBuffer*> oscBufs;
std::vector<ChanOscStatus*> oscFFTs;
std::vector<int> oscChans;
int chans=e->getTotalChannelCount();
ImGuiWindow* window=ImGui::GetCurrentWindow();
ImGuiStyle& style=ImGui::GetStyle();
ImVec2 waveform[1024];
// check work thread
if (chanOscWorkPool==NULL) {
logV("creating chan osc work pool");
chanOscWorkPool=new DivWorkPool(settings.chanOscThreads);
}
// fill buffers
for (int i=0; i<chans; i++) {
DivDispatchOscBuffer* buf=e->getOscBuffer(i);
if (buf!=NULL && e->curSubSong->chanShow[i]) {
oscBufs.push_back(buf);
oscFFTs.push_back(&chanOscChan[i]);
oscChans.push_back(i);
}
}
// process
for (size_t i=0; i<oscBufs.size(); i++) {
ChanOscStatus* fft_=oscFFTs[i];
fft_->relatedBuf=oscBufs[i];
fft_->relatedCh=oscChans[i];
if (fft_->relatedBuf!=NULL) {
// prepare
if (centerSettingReset) {
fft_->relatedBuf->readNeedle=fft_->relatedBuf->needle;
}
// check FFT status existence
if (!fft_->ready) {
logD("creating FFT plan for channel %d",fft_->relatedCh);
fft_->inBuf=(double*)fftw_malloc(FURNACE_FFT_SIZE*sizeof(double));
fft_->outBuf=(fftw_complex*)fftw_malloc(FURNACE_FFT_SIZE*sizeof(fftw_complex));
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!");
} else if (fft_->planI==NULL) {
logE("failed to create inverse plan!");
} else if (fft_->inBuf==NULL || fft_->outBuf==NULL || fft_->corrBuf==NULL) {
logE("failed to create FFT buffers");
} else {
fft_->ready=true;
}
}
if (fft_->ready && e->isRunning()) {
chanOscWorkPool->push([this](void* fft_v) {
ChanOscStatus* fft=(ChanOscStatus*)fft_v;
DivDispatchOscBuffer* buf=fft->relatedBuf;
int ch=fft->relatedCh;
// the STRATEGY
// 1. FFT of windowed signal
// 2. inverse FFT of auto-correlation
// 3. find size of one period
// 4. DFT of the fundamental of ONE PERIOD
// 5. now we can get phase information
//
// I have a feeling this could be simplified to two FFTs or even one...
// if you know how, please tell me
// initialization
double phase=0.0;
int displaySize=(float)(buf->rate)*(chanOscWindowSize/1000.0f);
fft->loudEnough=false;
fft->needle=buf->needle;
// first FFT
for (int j=0; j<FURNACE_FFT_SIZE; j++) {
fft->inBuf[j]=(double)buf->data[(unsigned short)(fft->needle-displaySize*2+((j*displaySize*2)/(FURNACE_FFT_SIZE)))]/32768.0;
if (fft->inBuf[j]>0.001 || fft->inBuf[j]<-0.001) fft->loudEnough=true;
fft->inBuf[j]*=0.55-0.45*cos(M_PI*(double)j/(double)(FURNACE_FFT_SIZE>>1));
}
// only proceed if not quiet
if (fft->loudEnough) {
fftw_execute(fft->plan);
// auto-correlation and second FFT
for (int j=0; j<FURNACE_FFT_SIZE; j++) {
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];
fft->outBuf[j][1]=0;
}
fft->outBuf[0][0]=0;
fft->outBuf[0][1]=0;
fft->outBuf[1][0]=0;
fft->outBuf[1][1]=0;
fftw_execute(fft->planI);
// window
for (int j=0; j<(FURNACE_FFT_SIZE>>1); j++) {
fft->corrBuf[j]*=1.0-((double)j/(double)(FURNACE_FFT_SIZE<<1));
}
// find size of period
double waveLenCandL=DBL_MAX;
double waveLenCandH=DBL_MIN;
fft->waveLen=FURNACE_FFT_SIZE-1;
fft->waveLenBottom=0;
fft->waveLenTop=0;
// find lowest point
for (int j=(FURNACE_FFT_SIZE>>2); j>2; j--) {
if (fft->corrBuf[j]<waveLenCandL) {
waveLenCandL=fft->corrBuf[j];
fft->waveLenBottom=j;
}
}
// find highest point
for (int j=(FURNACE_FFT_SIZE>>1)-1; j>fft->waveLenBottom; j--) {
if (fft->corrBuf[j]>waveLenCandH) {
waveLenCandH=fft->corrBuf[j];
fft->waveLen=j;
}
}
fft->waveLenTop=fft->waveLen;
// did we find the period size?
if (fft->waveLen<(FURNACE_FFT_SIZE-32)) {
// we got pitch
chanOscPitch[ch]=pow(1.0-(fft->waveLen/(double)(FURNACE_FFT_SIZE>>1)),4.0);
fft->waveLen*=(double)displaySize*2.0/(double)FURNACE_FFT_SIZE;
// DFT of one period (x_1)
double dft[2];
dft[0]=0.0;
dft[1]=0.0;
for (int j=fft->needle-1-(displaySize>>1)-(int)fft->waveLen, k=0; k<fft->waveLen; j++, k++) {
double one=((double)buf->data[j&0xffff]/32768.0);
double two=(double)k*(-2.0*M_PI)/fft->waveLen;
dft[0]+=one*cos(two);
dft[1]+=one*sin(two);
}
// calculate and lock into phase
phase=(0.5+(atan2(dft[1],dft[0])/(2.0*M_PI)));
if (chanOscWaveCorr) {
fft->needle-=phase*fft->waveLen;
}
}
}
fft->needle-=displaySize;
},fft_);
}
}
}
chanOscWorkPool->wait();
// 0: none
// 1: sqrt(chans)
// 2: sqrt(chans+1)
// 3: sqrt(chans)+1
switch (chanOscAutoColsType) {
case 1:
chanOscCols=sqrt(oscChans.size());
break;
case 2:
chanOscCols=sqrt(oscChans.size()+1);
break;
case 3:
chanOscCols=sqrt(oscChans.size())+1;
break;
}
if (chanOscCols<1) chanOscCols=1;
if (chanOscCols>64) chanOscCols=64;
int rows=(oscBufs.size()+(chanOscCols-1))/chanOscCols;
// render
for (size_t i=0; i<oscBufs.size(); i++) {
if (i%chanOscCols==0) ImGui::TableNextRow();
ImGui::TableNextColumn();
DivDispatchOscBuffer* buf=oscBufs[i];
ChanOscStatus* fft=oscFFTs[i];
int ch=oscChans[i];
if (buf==NULL) {
ImGui::Text("Error!");
} else {
ImVec2 size=ImGui::GetContentRegionAvail();
size.y=availY/rows;
ImVec2 minArea=window->DC.CursorPos;
ImVec2 maxArea=ImVec2(
minArea.x+size.x,
minArea.y+size.y
);
ImRect rect=ImRect(minArea,maxArea);
ImRect inRect=rect;
inRect.Min.x+=dpiScale;
inRect.Min.y+=2.0*dpiScale;
inRect.Max.x-=dpiScale;
inRect.Max.y-=2.0*dpiScale;
int precision=inRect.Max.x-inRect.Min.x;
if (precision<1) precision=1;
if (precision>1024) precision=1024;
ImGui::ItemSize(size,style.FramePadding.y);
if (ImGui::ItemAdd(rect,ImGui::GetID("chOscDisplay"))) {
if (!e->isRunning()) {
for (unsigned short j=0; j<precision; j++) {
float x=(float)j/(float)precision;
waveform[j]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f));
}
} else {
int displaySize=(float)(buf->rate)*(chanOscWindowSize/1000.0f);
float minLevel=1.0f;
float maxLevel=-1.0f;
float dcOff=0.0f;
if (debugFFT) {
// FFT debug code!
double maxavg=0.0;
for (unsigned short j=0; j<(FURNACE_FFT_SIZE>>1); j++) {
if (fabs(fft->corrBuf[j]>maxavg)) {
maxavg=fabs(fft->corrBuf[j]);
}
}
if (maxavg>0.0000001) maxavg=0.5/maxavg;
for (unsigned short j=0; j<precision; j++) {
float x=(float)j/(float)precision;
float y;
if (j>=precision/2) {
y=fft->inBuf[((j-(precision/2))*FURNACE_FFT_SIZE*2)/(precision)];
} else {
y=fft->corrBuf[(j*FURNACE_FFT_SIZE)/precision]*maxavg;
}
waveform[j]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f-y));
}
if (fft->loudEnough) {
String cPhase=fmt::sprintf("\n%.1f (b: %d t: %d)",fft->waveLen,fft->waveLenBottom,fft->waveLenTop);
dl->AddText(inRect.Min,0xffffffff,cPhase.c_str());
dl->AddLine(
ImLerp(inRect.Min,inRect.Max,ImVec2((double)fft->waveLenBottom/(double)FURNACE_FFT_SIZE,0.0)),
ImLerp(inRect.Min,inRect.Max,ImVec2((double)fft->waveLenBottom/(double)FURNACE_FFT_SIZE,1.0)),
0xffffff00
);
dl->AddLine(
ImLerp(inRect.Min,inRect.Max,ImVec2((double)fft->waveLenTop/(double)FURNACE_FFT_SIZE,0.0)),
ImLerp(inRect.Min,inRect.Max,ImVec2((double)fft->waveLenTop/(double)FURNACE_FFT_SIZE,1.0)),
0xff00ff00
);
} else {
if (debugFFT) {
dl->AddText(inRect.Min,0xffffffff,"\nquiet");
}
}
} else {
for (unsigned short j=0; j<precision; j++) {
float y=(float)buf->data[(unsigned short)(fft->needle+(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)(fft->needle+(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) {
float xVal=computeGradPos(chanOscColorX,ch);
float yVal=computeGradPos(chanOscColorY,ch);
xVal=CLAMP(xVal,0.0f,1.0f);
yVal=CLAMP(yVal,0.0f,1.0f);
color=chanOscGrad.get(xVal,1.0f-yVal);
}
ImGui::PushClipRect(inRect.Min,inRect.Max,false);
ImDrawListFlags prevFlags=dl->Flags;
//if (!settings.oscAntiAlias) {
dl->Flags&=~(ImDrawListFlags_AntiAliasedLines|ImDrawListFlags_AntiAliasedLinesUseTex);
//}
dl->AddPolyline(waveform,precision,color,ImDrawFlags_None,dpiScale);
dl->Flags=prevFlags;
if (!chanOscTextFormat.empty()) {
String text;
bool inFormat=false;
for (char j: chanOscTextFormat) {
if (inFormat) {
switch (j) {
case 'c':
text+=e->getChannelName(ch);
break;
case 'C':
text+=e->getChannelShortName(ch);
break;
case 'd':
text+=fmt::sprintf("%d",ch);
break;
case 'D':
text+=fmt::sprintf("%d",ch+1);
break;
case 'i': {
DivChannelState* chanState=e->getChanState(ch);
if (chanState==NULL) break;
DivInstrument* ins=e->getIns(chanState->lastIns);
text+=ins->name;
break;
}
case 'I': {
DivChannelState* chanState=e->getChanState(ch);
if (chanState==NULL) break;
text+=fmt::sprintf("%d",chanState->lastIns);
break;
}
case 'x': {
DivChannelState* chanState=e->getChanState(ch);
if (chanState==NULL) break;
if (chanState->lastIns<0) {
text+="??";
} else {
text+=fmt::sprintf("%.2X",chanState->lastIns);
}
break;
}
case 's': {
text+=e->getSystemName(e->sysOfChan[ch]);
break;
}
case 'p': {
text+=FurnaceGUI::getSystemPartNumber(e->sysOfChan[ch],e->song.systemFlags[e->dispatchOfChan[ch]]);
break;
}
case 'S': {
text+=fmt::sprintf("%d",e->dispatchOfChan[ch]);
break;
}
case 'v': {
DivChannelState* chanState=e->getChanState(ch);
if (chanState==NULL) break;
text+=fmt::sprintf("%d",chanState->volume>>8);
break;
}
case 'V': {
DivChannelState* chanState=e->getChanState(ch);
if (chanState==NULL) break;
int volMax=chanState->volMax>>8;
if (volMax<1) volMax=1;
text+=fmt::sprintf("%d%%",(chanState->volume>>8)/volMax);
break;
}
case 'b': {
DivChannelState* chanState=e->getChanState(ch);
if (chanState==NULL) break;
text+=fmt::sprintf("%.2X",chanState->volume>>8);
break;
}
case 'n': {
DivChannelState* chanState=e->getChanState(ch);
if (chanState==NULL || !(chanState->keyOn)) break;
short tempNote=chanState->note; //all of this conversion is necessary because notes 100-102 are special chars
short noteMod=tempNote%12+12; //also note 0 is a BUG, hence +12 on the note and -1 on the octave
short oct=tempNote/12-1;
text+=fmt::sprintf("%s",noteName(noteMod,oct));
break;
}
case '%':
text+='%';
break;
default:
text+='%';
text+=j;
break;
}
inFormat=false;
} else {
if (j=='%') {
inFormat=true;
} else {
text+=j;
}
}
}
dl->AddText(ImLerp(inRect.Min,inRect.Max,ImVec2(0.0f,0.0f)),ImGui::GetColorU32(chanOscTextColor),text.c_str());
}
ImGui::PopClipRect();
}
}
}
ImGui::EndTable();
if (ImGui::IsItemClicked(ImGuiMouseButton_Right)) {
chanOscOptions=!chanOscOptions;
}
}
ImGui::PopStyleVar();
}
}
if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows)) curWindow=GUI_WINDOW_CHAN_OSC;
ImGui::End();
}
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