/** * Furnace Tracker - multi-system chiptune tracker * Copyright (C) 2021-2022 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 void FurnaceGUI::readOsc() { int writePos=e->oscWritePos; int readPos=e->oscReadPos; int avail=0; int total=0; 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); for (int i=0; i<512; i++) { int pos=(readPos+(i*total/512))&0x7fff; oscValues[i]=(e->oscBuf[0][pos]+e->oscBuf[1][pos])*0.5f; } float peakDecay=0.05f*60.0f*ImGui::GetIO().DeltaTime; for (int i=0; i<2; i++) { peak[i]*=1.0-peakDecay; if (peak[i]<0.0001) peak[i]=0.0; float newPeak=peak[i]; for (int j=0; joscBuf[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(scrW*dpiScale,scrH*dpiScale)); 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)) { //ImGui::SetCursorPos(ImVec2(0,0)); ImGui::BeginDisabled(); ImGui::PlotLines("##SingleOsc",oscValues,512,0,NULL,-1.0f,1.0f,ImGui::GetContentRegionAvail()); ImGui::EndDisabled(); } ImGui::PopStyleVar(3); if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows)) curWindow=GUI_WINDOW_OSCILLOSCOPE; ImGui::End(); }