etc
/
furnace
mirror of https://github.com/tildearrow/furnace.git
0
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
furnace/src/gui/osc.cpp

333 lines
10 KiB
C++
Raw Blame History

/**
* 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.
*/
#include "gui.h"
#include "imgui_internal.h"
#include <imgui.h>
#include "../ta-log.h"
#include "../engine/filter.h"
void FurnaceGUI::readOsc() {
int writePos=e->oscWritePos;
int readPos=e->oscReadPos;
int avail=0;
int total=0;
if (firstFrame) {
readPos=writePos;
}
if (writePos>=readPos) {
avail=writePos-readPos;
} else {
avail=writePos-readPos+32768;
}
if (oscTotal==0) {
oscTotal=ImGui::GetIO().DeltaTime*e->getAudioDescGot().rate;
} else {
oscTotal=(oscTotal+(int)round(ImGui::GetIO().DeltaTime*e->getAudioDescGot().rate))>>1;
}
int bias=avail-oscTotal-e->getAudioDescGot().bufsize;
if (bias<0) bias=0;
total=oscTotal+(bias>>6);
if (total>avail) total=avail;
//printf("total: %d. avail: %d bias: %d\n",total,avail,bias);
int winSize=e->getAudioDescGot().rate*(oscWindowSize/1000.0);
int oscReadPos=(writePos-winSize)&0x7fff;
for (int ch=0; ch<e->getAudioDescGot().outChans; ch++) {
if (oscValues[ch]==NULL) {
oscValues[ch]=new float[1024];
}
memset(oscValues[ch],0,1024*sizeof(float));
float* sincITable=DivFilterTables::getSincIntegralTable();
float posFrac=0.0;
int posInt=oscReadPos;
float factor=(float)oscWidth/(float)winSize;
for (int i=0; i<oscWidth; i++) {
oscValues[ch][i]+=e->oscBuf[ch][posInt&0x7fff];
posFrac+=1.0;
while (posFrac>=1.0) {
unsigned int n=((unsigned int)(posFrac*8192.0))&8191;
posFrac-=factor;
posInt++;
float* t1=&sincITable[(8191-n)<<3];
float* t2=&sincITable[n<<3];
float delta=e->oscBuf[ch][posInt&0x7fff]-e->oscBuf[ch][(posInt-1)&0x7fff];
for (int j=0; j<8; j++) {
if (i-j>0) {
oscValues[ch][i-j]+=t1[j]*-delta;
}
if (i+j+1<oscWidth) {
oscValues[ch][i+j+1]+=t2[j]*delta;
}
}
}
}
for (int i=0; i<oscWidth; i++) {
if (oscValues[ch][i]>0.001f || oscValues[ch][i]<-0.001f) {
WAKE_UP;
}
}
}
/*for (int i=0; i<oscWidth; i++) {
oscValues[i]=(i&1)?0.3:0;
}*/
float peakDecay=0.05f*60.0f*ImGui::GetIO().DeltaTime;
for (int i=0; i<e->getAudioDescGot().outChans; i++) {
peak[i]*=1.0-peakDecay;
if (peak[i]<0.0001) {
peak[i]=0.0;
} else {
WAKE_UP;
}
float newPeak=peak[i];
for (int j=0; j<total; j++) {
int pos=(readPos+j)&0x7fff;
if (fabs(e->oscBuf[i][pos])>newPeak) {
newPeak=fabs(e->oscBuf[i][pos]);
}
}
peak[i]+=(newPeak-peak[i])*0.9;
}
readPos=(readPos+total)&0x7fff;
e->oscReadPos=readPos;
}
void FurnaceGUI::drawOsc() {
if (nextWindow==GUI_WINDOW_OSCILLOSCOPE) {
oscOpen=true;
ImGui::SetNextWindowFocus();
nextWindow=GUI_WINDOW_NOTHING;
}
if (!oscOpen) return;
ImGui::SetNextWindowSizeConstraints(ImVec2(64.0f*dpiScale,32.0f*dpiScale),ImVec2(canvasW,canvasH));
if (settings.oscTakesEntireWindow) {
ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_ItemInnerSpacing,ImVec2(0,0));
}
if (ImGui::Begin("Oscilloscope",&oscOpen,globalWinFlags)) {
if (oscZoomSlider) {
if (ImGui::VSliderFloat("##OscZoom",ImVec2(20.0f*dpiScale,ImGui::GetContentRegionAvail().y),&oscZoom,0.5,2.0)) {
if (oscZoom<0.5) oscZoom=0.5;
if (oscZoom>2.0) oscZoom=2.0;
} rightClickable
if (ImGui::IsItemHovered()) {
ImGui::SetTooltip("zoom: %.2fx (%.1fdB)",oscZoom,20.0*log10(oscZoom*2.0));
}
if (ImGui::IsItemClicked(ImGuiMouseButton_Middle)) {
oscZoom=0.5;
}
ImGui::SameLine();
if (ImGui::VSliderFloat("##OscWinSize",ImVec2(20.0f*dpiScale,ImGui::GetContentRegionAvail().y),&oscWindowSize,5.0,100.0)) {
if (oscWindowSize<5.0) oscWindowSize=5.0;
if (oscWindowSize>100.0) oscWindowSize=100.0;
} rightClickable
if (ImGui::IsItemHovered()) {
ImGui::SetTooltip("window size: %.1fms",oscWindowSize);
}
if (ImGui::IsItemClicked(ImGuiMouseButton_Middle)) {
oscWindowSize=20.0;
}
ImGui::SameLine();
}
ImDrawList* dl=ImGui::GetWindowDrawList();
ImGuiWindow* window=ImGui::GetCurrentWindow();
ImVec2 waveform[1024];
ImVec2 size=ImGui::GetContentRegionAvail();
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+=dpiScale;
inRect.Max.x-=dpiScale;
inRect.Max.y-=dpiScale;
ImGuiStyle& style=ImGui::GetStyle();
ImU32 color=ImGui::GetColorU32(isClipping?uiColors[GUI_COLOR_OSC_WAVE_PEAK]:uiColors[GUI_COLOR_OSC_WAVE]);
ImU32 borderColor=ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_BORDER]);
ImU32 refColor=ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_REF]);
ImU32 guideColor=ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_GUIDE]);
ImGui::ItemSize(size,style.FramePadding.y);
if (ImGui::ItemAdd(rect,ImGui::GetID("wsDisplay"))) {
dl->AddRectFilledMultiColor(
inRect.Min,
inRect.Max,
ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_BG1]),
ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_BG2]),
ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_BG4]),
ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_BG3]),
settings.oscRoundedCorners?(8.0f*dpiScale):0.0f
);
dl->AddLine(
ImLerp(rect.Min,rect.Max,ImVec2(0.0f,0.5f)),
ImLerp(rect.Min,rect.Max,ImVec2(1.0f,0.5f)),
refColor,
dpiScale
);
dl->AddLine(
ImLerp(rect.Min,rect.Max,ImVec2(0.48f,0.125f)),
ImLerp(rect.Min,rect.Max,ImVec2(0.52f,0.125f)),
guideColor,
dpiScale
);
dl->AddLine(
ImLerp(rect.Min,rect.Max,ImVec2(0.47f,0.25f)),
ImLerp(rect.Min,rect.Max,ImVec2(0.53f,0.25f)),
guideColor,
dpiScale
);
dl->AddLine(
ImLerp(rect.Min,rect.Max,ImVec2(0.45f,0.375f)),
ImLerp(rect.Min,rect.Max,ImVec2(0.55f,0.375f)),
guideColor,
dpiScale
);
dl->AddLine(
ImLerp(rect.Min,rect.Max,ImVec2(0.45f,0.625f)),
ImLerp(rect.Min,rect.Max,ImVec2(0.55f,0.625f)),
guideColor,
dpiScale
);
dl->AddLine(
ImLerp(rect.Min,rect.Max,ImVec2(0.47f,0.75f)),
ImLerp(rect.Min,rect.Max,ImVec2(0.53f,0.75f)),
guideColor,
dpiScale
);
dl->AddLine(
ImLerp(rect.Min,rect.Max,ImVec2(0.48f,0.875f)),
ImLerp(rect.Min,rect.Max,ImVec2(0.52f,0.875f)),
guideColor,
dpiScale
);
dl->AddLine(
ImLerp(rect.Min,rect.Max,ImVec2(0.5f,0.08f)),
ImLerp(rect.Min,rect.Max,ImVec2(0.5f,0.92f)),
guideColor,
dpiScale
);
oscWidth=round(inRect.Max.x-inRect.Min.x);
if (oscWidth<1) oscWidth=1;
if (oscWidth>1024) oscWidth=1024;
ImDrawListFlags prevFlags=dl->Flags;
if (!settings.oscAntiAlias) {
dl->Flags&=~(ImDrawListFlags_AntiAliasedLines|ImDrawListFlags_AntiAliasedLinesUseTex);
}
if (settings.oscMono) {
for (int i=0; i<oscWidth; i++) {
float x=(float)i/(float)oscWidth;
float avg=0;
for (int j=0; j<e->getAudioDescGot().outChans; j++) {
avg+=oscValues[j][i];
}
avg/=e->getAudioDescGot().outChans;
float y=avg*oscZoom;
if (!settings.oscEscapesBoundary) {
if (y<-0.5f) y=-0.5f;
if (y>0.5f) y=0.5f;
}
waveform[i]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f-y));
}
if (settings.oscEscapesBoundary) {
dl->PushClipRectFullScreen();
dl->AddPolyline(waveform,oscWidth,color,ImDrawFlags_None,dpiScale);
dl->PopClipRect();
} else {
dl->AddPolyline(waveform,oscWidth,color,ImDrawFlags_None,dpiScale);
}
} else {
for (int ch=0; ch<e->getAudioDescGot().outChans; ch++) {
for (int i=0; i<oscWidth; i++) {
float x=(float)i/(float)oscWidth;
float y=oscValues[ch][i]*oscZoom;
if (!settings.oscEscapesBoundary) {
if (y<-0.5f) y=-0.5f;
if (y>0.5f) y=0.5f;
}
waveform[i]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f-y));
}
if (!isClipping) {
color=ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_WAVE_CH0+ch]);
}
if (settings.oscEscapesBoundary) {
dl->PushClipRectFullScreen();
dl->AddPolyline(waveform,oscWidth,color,ImDrawFlags_None,dpiScale);
dl->PopClipRect();
} else {
dl->AddPolyline(waveform,oscWidth,color,ImDrawFlags_None,dpiScale);
}
}
}
dl->Flags=prevFlags;
if (settings.oscBorder) {
dl->AddRect(inRect.Min,inRect.Max,borderColor,settings.oscRoundedCorners?(8.0f*dpiScale):0.0f,0,1.5f*dpiScale);
}
}
if (oscZoomSlider && ImGui::IsItemHovered()) {
float val=20.0*log10(2.0*fabs(0.5-((ImGui::GetMousePos().y-inRect.Min.y)/(inRect.Max.y-inRect.Min.y))));
if (val>0.0f) val=0.0f;
if (val<=-INFINITY) {
ImGui::SetTooltip("(-Infinity)dB");
} else {
ImGui::SetTooltip("%.1fdB",val);
}
}
if (ImGui::IsItemClicked(ImGuiMouseButton_Right)) {
oscZoomSlider=!oscZoomSlider;
}
}
if (settings.oscTakesEntireWindow) {
ImGui::PopStyleVar(3);
}
if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows)) curWindow=GUI_WINDOW_OSCILLOSCOPE;
ImGui::End();
}
Reference in New Issue View Git Blame Copy Permalink