246 lines
7.7 KiB
C++
246 lines
7.7 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2022 tildearrow and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "gui.h"
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#include "imgui_internal.h"
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// TODO:
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// - potentially move oscilloscope seek position to the end, and read the last samples
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// - this allows for setting up the window size
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void FurnaceGUI::readOsc() {
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int writePos=e->oscWritePos;
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int readPos=e->oscReadPos;
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int avail=0;
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int total=0;
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if (firstFrame) {
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readPos=writePos;
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}
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if (writePos>=readPos) {
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avail=writePos-readPos;
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} else {
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avail=writePos-readPos+32768;
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}
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if (oscTotal==0) {
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oscTotal=ImGui::GetIO().DeltaTime*e->getAudioDescGot().rate;
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} else {
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oscTotal=(oscTotal+(int)round(ImGui::GetIO().DeltaTime*e->getAudioDescGot().rate))>>1;
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}
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int bias=avail-oscTotal-e->getAudioDescGot().bufsize;
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if (bias<0) bias=0;
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total=oscTotal+(bias>>6);
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if (total>avail) total=avail;
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//printf("total: %d. avail: %d bias: %d\n",total,avail,bias);
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for (int i=0; i<512; i++) {
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int pos=(readPos+(i*total/512))&0x7fff;
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oscValues[i]=(e->oscBuf[0][pos]+e->oscBuf[1][pos])*0.5f;
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if (oscValues[i]>0.001f || oscValues[i]<-0.001f) {
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WAKE_UP;
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}
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}
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float peakDecay=0.05f*60.0f*ImGui::GetIO().DeltaTime;
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for (int i=0; i<2; i++) {
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peak[i]*=1.0-peakDecay;
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if (peak[i]<0.0001) {
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peak[i]=0.0;
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} else {
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WAKE_UP;
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}
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float newPeak=peak[i];
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for (int j=0; j<total; j++) {
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int pos=(readPos+j)&0x7fff;
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if (fabs(e->oscBuf[i][pos])>newPeak) {
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newPeak=fabs(e->oscBuf[i][pos]);
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}
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}
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peak[i]+=(newPeak-peak[i])*0.9;
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}
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readPos=(readPos+total)&0x7fff;
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e->oscReadPos=readPos;
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}
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void FurnaceGUI::drawOsc() {
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if (nextWindow==GUI_WINDOW_OSCILLOSCOPE) {
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oscOpen=true;
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ImGui::SetNextWindowFocus();
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nextWindow=GUI_WINDOW_NOTHING;
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}
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if (!oscOpen) return;
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ImGui::SetNextWindowSizeConstraints(ImVec2(64.0f*dpiScale,32.0f*dpiScale),ImVec2(scrW*dpiScale,scrH*dpiScale));
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if (settings.oscTakesEntireWindow) {
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ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding,ImVec2(0,0));
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ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing,ImVec2(0,0));
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ImGui::PushStyleVar(ImGuiStyleVar_ItemInnerSpacing,ImVec2(0,0));
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}
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if (ImGui::Begin("Oscilloscope",&oscOpen,globalWinFlags)) {
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if (oscZoomSlider) {
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if (ImGui::VSliderFloat("##OscZoom",ImVec2(20.0f*dpiScale,ImGui::GetContentRegionAvail().y),&oscZoom,0.5,2.0)) {
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if (oscZoom<0.5) oscZoom=0.5;
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if (oscZoom>2.0) oscZoom=2.0;
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}
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ImGui::SameLine();
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}
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ImDrawList* dl=ImGui::GetWindowDrawList();
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ImGuiWindow* window=ImGui::GetCurrentWindow();
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ImVec2 waveform[512];
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ImVec2 size=ImGui::GetContentRegionAvail();
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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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minArea.y+size.y
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);
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ImRect rect=ImRect(minArea,maxArea);
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ImRect inRect=rect;
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inRect.Min.x+=dpiScale;
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inRect.Min.y+=dpiScale;
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inRect.Max.x-=dpiScale;
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inRect.Max.y-=dpiScale;
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ImGuiStyle& style=ImGui::GetStyle();
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ImU32 color=ImGui::GetColorU32(isClipping?uiColors[GUI_COLOR_OSC_WAVE_PEAK]:uiColors[GUI_COLOR_OSC_WAVE]);
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ImU32 borderColor=ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_BORDER]);
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ImU32 refColor=ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_REF]);
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ImU32 guideColor=ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_GUIDE]);
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ImGui::ItemSize(size,style.FramePadding.y);
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if (ImGui::ItemAdd(rect,ImGui::GetID("wsDisplay"))) {
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// https://github.com/ocornut/imgui/issues/3710
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const int v0 = dl->VtxBuffer.Size;
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dl->AddRectFilled(inRect.Min,inRect.Max,0xffffffff,settings.oscRoundedCorners?(8.0f*dpiScale):0.0f);
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const int v1 = dl->VtxBuffer.Size;
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for (int i=v0; i<v1; i++) {
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ImDrawVert* v=&dl->VtxBuffer.Data[i];
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ImVec4 col0=uiColors[GUI_COLOR_OSC_BG1];
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ImVec4 col1=uiColors[GUI_COLOR_OSC_BG3];
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ImVec4 col2=uiColors[GUI_COLOR_OSC_BG2];
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ImVec4 col3=uiColors[GUI_COLOR_OSC_BG4];
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float shadeX=(v->pos.x-rect.Min.x)/(rect.Max.x-rect.Min.x);
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float shadeY=(v->pos.y-rect.Min.y)/(rect.Max.y-rect.Min.y);
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if (shadeX<0.0f) shadeX=0.0f;
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if (shadeX>1.0f) shadeX=1.0f;
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if (shadeY<0.0f) shadeY=0.0f;
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if (shadeY>1.0f) shadeY=1.0f;
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col0.x+=(col2.x-col0.x)*shadeX;
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col0.y+=(col2.y-col0.y)*shadeX;
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col0.z+=(col2.z-col0.z)*shadeX;
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col0.w+=(col2.w-col0.w)*shadeX;
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col1.x+=(col3.x-col1.x)*shadeX;
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col1.y+=(col3.y-col1.y)*shadeX;
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col1.z+=(col3.z-col1.z)*shadeX;
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col1.w+=(col3.w-col1.w)*shadeX;
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col0.x+=(col1.x-col0.x)*shadeY;
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col0.y+=(col1.y-col0.y)*shadeY;
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col0.z+=(col1.z-col0.z)*shadeY;
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col0.w+=(col1.w-col0.w)*shadeY;
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ImVec4 conv=ImGui::ColorConvertU32ToFloat4(v->col);
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col0.x*=conv.x;
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col0.y*=conv.y;
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col0.z*=conv.z;
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col0.w*=conv.w;
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v->col=ImGui::ColorConvertFloat4ToU32(col0);
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}
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dl->AddLine(
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ImLerp(rect.Min,rect.Max,ImVec2(0.0f,0.5f)),
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ImLerp(rect.Min,rect.Max,ImVec2(1.0f,0.5f)),
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refColor,
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dpiScale
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);
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dl->AddLine(
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ImLerp(rect.Min,rect.Max,ImVec2(0.48f,0.125f)),
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ImLerp(rect.Min,rect.Max,ImVec2(0.52f,0.125f)),
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guideColor,
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dpiScale
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);
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dl->AddLine(
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ImLerp(rect.Min,rect.Max,ImVec2(0.47f,0.25f)),
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ImLerp(rect.Min,rect.Max,ImVec2(0.53f,0.25f)),
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guideColor,
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dpiScale
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);
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dl->AddLine(
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ImLerp(rect.Min,rect.Max,ImVec2(0.45f,0.375f)),
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ImLerp(rect.Min,rect.Max,ImVec2(0.55f,0.375f)),
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guideColor,
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dpiScale
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);
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dl->AddLine(
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ImLerp(rect.Min,rect.Max,ImVec2(0.45f,0.625f)),
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ImLerp(rect.Min,rect.Max,ImVec2(0.55f,0.625f)),
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guideColor,
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dpiScale
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);
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dl->AddLine(
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ImLerp(rect.Min,rect.Max,ImVec2(0.47f,0.75f)),
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ImLerp(rect.Min,rect.Max,ImVec2(0.53f,0.75f)),
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guideColor,
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dpiScale
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);
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dl->AddLine(
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ImLerp(rect.Min,rect.Max,ImVec2(0.48f,0.875f)),
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ImLerp(rect.Min,rect.Max,ImVec2(0.52f,0.875f)),
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guideColor,
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dpiScale
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);
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dl->AddLine(
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ImLerp(rect.Min,rect.Max,ImVec2(0.5f,0.08f)),
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ImLerp(rect.Min,rect.Max,ImVec2(0.5f,0.92f)),
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guideColor,
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dpiScale
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);
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for (size_t i=0; i<512; i++) {
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float x=(float)i/512.0f;
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float y=oscValues[i]*oscZoom;
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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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waveform[i]=ImLerp(inRect.Min,inRect.Max,ImVec2(x,0.5f-y));
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}
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dl->AddPolyline(waveform,512,color,ImDrawFlags_None,dpiScale);
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if (settings.oscBorder) {
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dl->AddRect(inRect.Min,inRect.Max,borderColor,settings.oscRoundedCorners?(8.0f*dpiScale):0.0f,0,1.5f*dpiScale);
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}
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}
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if (ImGui::IsItemClicked(ImGuiMouseButton_Right)) {
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oscZoomSlider=!oscZoomSlider;
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}
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}
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if (settings.oscTakesEntireWindow) {
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ImGui::PopStyleVar(3);
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}
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if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows)) curWindow=GUI_WINDOW_OSCILLOSCOPE;
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ImGui::End();
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}
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