From 48df7e77d7457c91386a4465320cd00de9ba4af9 Mon Sep 17 00:00:00 2001
From: Alexander Diamadis <alex@aldiserver.de>
Date: Thu, 3 Mar 2022 17:32:01 +0100
Subject: [PATCH] Gain Structure Optimization Option added

---
 source/library.cpp    |  92 ++++++++++++---------------
 source/mainwindow.cpp |  28 ++++++++-
 source/mainwindow.h   |   2 +
 source/mainwindow.ui  | 143 ++++++++++++++++++++++++++++++++----------
 4 files changed, 180 insertions(+), 85 deletions(-)

diff --git a/source/library.cpp b/source/library.cpp
index c4b9211..dbc4dd4 100644
--- a/source/library.cpp
+++ b/source/library.cpp
@@ -254,28 +254,24 @@ void library::printAllAmps()
 
 void library::on_listWidget_ampView_currentRowChanged(int currentRow)
 {
-    if (initAmps){
-        if (currentRow>=0){
-            ui->lineEdit_ampName->setText(QString::fromStdString(m_pCamp[currentRow].getName()));
-            ui->comboBox_sensUnit->setCurrentIndex(m_pCamp[currentRow].getSensivityUnit());
-            ui->doubleSpinBox_inputSensitivity->setValue(m_pCamp[currentRow].getSensitivity());
-            refreshModeOverview();
-            ui->listWidget_modeSelector->setCurrentRow(0);
-            ui->lineEdit_ampName->setEnabled(true);
-            ui->doubleSpinBox_inputSensitivity->setEnabled(true);
-            ui->comboBox_sensUnit->setEnabled(true);
-            ui->lineEdit_modeName->setEnabled(true);
-            ui->listWidget_modeSelector->setEnabled(true);
-            ui->spinBox_ratedImp->setEnabled(true);
-            ui->spinBox_ratedPower->setEnabled(true);
+    if (currentRow>=0){
+        ui->lineEdit_ampName->setText(QString::fromStdString(m_pCamp[currentRow].getName()));
+        ui->comboBox_sensUnit->setCurrentIndex(m_pCamp[currentRow].getSensivityUnit());
+        ui->doubleSpinBox_inputSensitivity->setValue(m_pCamp[currentRow].getSensitivity());
+        refreshModeOverview();
+        ui->listWidget_modeSelector->setCurrentRow(0);
+        ui->lineEdit_ampName->setEnabled(true);
+        ui->doubleSpinBox_inputSensitivity->setEnabled(true);
+        ui->comboBox_sensUnit->setEnabled(true);
+        ui->lineEdit_modeName->setEnabled(true);
+        ui->listWidget_modeSelector->setEnabled(true);
+        ui->spinBox_ratedImp->setEnabled(true);
+        ui->spinBox_ratedPower->setEnabled(true);
 
-        }else
-        {
-            ui->lineEdit_ampName->setEnabled(false);
-            ui->doubleSpinBox_inputSensitivity->setEnabled(false);
-        }
-    }else {
-        initAmps =true;
+    }else
+    {
+        ui->lineEdit_ampName->setEnabled(false);
+        ui->doubleSpinBox_inputSensitivity->setEnabled(false);
     }
 
 }
@@ -436,29 +432,25 @@ void library::on_pushButton_addSpeaker_clicked()
 
 void library::on_listWidget_speakerView_currentRowChanged(int currentRow)
 {
-    if (initSpeaker){
-        if (currentRow>=0){
-            ui->lineEdit_speakerName->setText(QString::fromStdString(m_pSpeaker[currentRow].getName()));
-            ui->spinBox_speakerImp->setValue(m_pSpeaker[currentRow].getImpedance());
-            ui->spinBox_speakerRMSPower->setValue(m_pSpeaker[currentRow].getRMSPower());
-            ui->spinBox_speakerPeakPower->setValue(m_pSpeaker[currentRow].getPeakPower());
-            ui->spinBox_speakerHPF->setValue(m_pSpeaker[currentRow].getHPF());
+    if (currentRow>=0){
+        ui->lineEdit_speakerName->setText(QString::fromStdString(m_pSpeaker[currentRow].getName()));
+        ui->spinBox_speakerImp->setValue(m_pSpeaker[currentRow].getImpedance());
+        ui->spinBox_speakerRMSPower->setValue(m_pSpeaker[currentRow].getRMSPower());
+        ui->spinBox_speakerPeakPower->setValue(m_pSpeaker[currentRow].getPeakPower());
+        ui->spinBox_speakerHPF->setValue(m_pSpeaker[currentRow].getHPF());
 
-            ui->lineEdit_speakerName->setEnabled(true);
-            ui->spinBox_speakerImp->setEnabled(true);
-            ui->spinBox_speakerRMSPower->setEnabled(true);
-            ui->spinBox_speakerPeakPower->setEnabled(true);
-            ui->spinBox_speakerHPF->setEnabled(true);
+        ui->lineEdit_speakerName->setEnabled(true);
+        ui->spinBox_speakerImp->setEnabled(true);
+        ui->spinBox_speakerRMSPower->setEnabled(true);
+        ui->spinBox_speakerPeakPower->setEnabled(true);
+        ui->spinBox_speakerHPF->setEnabled(true);
 
-        }else {
-            ui->lineEdit_speakerName->setEnabled(false);
-            //ui->spinBox_speakerImp->setEnabled(false);
-            //ui->spinBox_speakerRMSPower->setEnabled(false);
-            //ui->spinBox_speakerPeakPower->setEnabled(false);
-            //ui->spinBox_speakerHPF->setEnabled(false);
-        }
-    }else{
-        initSpeaker=true;
+    }else {
+        ui->lineEdit_speakerName->setEnabled(false);
+        //ui->spinBox_speakerImp->setEnabled(false);
+        //ui->spinBox_speakerRMSPower->setEnabled(false);
+        //ui->spinBox_speakerPeakPower->setEnabled(false);
+        //ui->spinBox_speakerHPF->setEnabled(false);
     }
 
 }
@@ -579,17 +571,13 @@ void library::on_pushButton_Apply_clicked()
 
 void library::on_listWidget_dacView_currentRowChanged(int currentRow)
 {
-    if (initDacs){
-        if (currentRow>=0){
-            ui->lineEdit_dacName->setText(QString::fromStdString(m_pDac[currentRow].name()));
-            ui->spinBox_dacOutputLevel->setValue(m_pDac[currentRow].outputLevel());
-            ui->lineEdit_dacName->setEnabled(true);
-            ui->spinBox_dacOutputLevel->setEnabled(true);
-        }else{
-            ui->lineEdit_dacName->setEnabled(false);
-        }
+    if (currentRow>=0){
+        ui->lineEdit_dacName->setText(QString::fromStdString(m_pDac[currentRow].name()));
+        ui->spinBox_dacOutputLevel->setValue(m_pDac[currentRow].outputLevel());
+        ui->lineEdit_dacName->setEnabled(true);
+        ui->spinBox_dacOutputLevel->setEnabled(true);
     }else{
-        initDacs=true;
+        ui->lineEdit_dacName->setEnabled(false);
     }
 
 }
diff --git a/source/mainwindow.cpp b/source/mainwindow.cpp
index 7cb8f2d..9a8d6f4 100644
--- a/source/mainwindow.cpp
+++ b/source/mainwindow.cpp
@@ -68,6 +68,7 @@ void MainWindow::on_pushButton_requestLimiter_clicked()
         return;
     }
 
+
     qreal vMaxSpeakerInRMS=20*std::log10(qSqrt(speakerImp*speakerRMS)/0.7746);
     qreal vMaxSpeakerInPeak=20*std::log10(qSqrt(speakerImp*speakerPeak)/0.7746);
 
@@ -91,6 +92,7 @@ void MainWindow::on_pushButton_requestLimiter_clicked()
     qreal releaseTimeRMS=attackTimeRMS*8;
     qreal releaseTimePeak=attackTimeRMS;
 
+    bool rmsRequired=true;
 
 
 
@@ -98,6 +100,7 @@ void MainWindow::on_pushButton_requestLimiter_clicked()
         QMessageBox msgBox(QMessageBox::Warning,"Amplifier can't deliver maximum RMS power","The maximum power level of the amplifier is below the maximum RMS power level of the speaker. To protect the speaker from a distorted signal the amplifier might deliver, a peak limiter is required with the amplifiers input sensitivty set as its threshold.");
         msgBox.exec();
         ui->label_thresholdRMS->setText(QString("not required"));
+        rmsRequired=false;
         ui->label_attackTimeRMS->setText(QString::number(attackTimeRMS,'f',2)+QString(" ms"));
         ui->label_releaseTimeRMS->setText(QString::number(releaseTimeRMS,'f',2)+QString(" ms"));
         ui->label_UMaxSpeakerInRMS->setText(QString::number(vMaxSpeakerInRMS,'f',2)+QString(" dBU (")+QString::number(qSqrt(speakerImp*speakerRMS),'f',2)+QString(" V)"));
@@ -137,7 +140,20 @@ void MainWindow::on_pushButton_requestLimiter_clicked()
         ui->label_UMaxAmpInPeak->setText(QString::number(vMaxAmpInPeak,'f',2)+QString(" dBU (")+QString::number(qPow(10,vMaxAmpInPeak/20)*0.7746,'f',2)+QString(" V)"));
     }
 
-
+    if (ui->checkBox_optimizeGain->checkState()){
+        qreal diff=0;
+        qreal digitalHeadroom=ui->spinBox_digitalHeadroom->value();
+        while (thresholdPeak+diff+1<=-digitalHeadroom){
+            diff++;
+        }
+        ui->label_thresholdPeak->setText(QString::number(thresholdPeak+diff,'f',1)+QString(" dBFS"));
+        if (rmsRequired){
+            ui->label_thresholdRMS->setText(QString::number(thresholdRMS+diff,'f',1)+QString(" dBFS"));
+        }
+        ui->label_inputVolumeControl->setText(QString::number(-diff)+QString(" dB"));
+    }else {
+        ui->label_inputVolumeControl->setText(QString("0 dB"));
+    }
 
 
 }
@@ -351,3 +367,13 @@ void MainWindow::on_actionOpen_Loudness_Analyzer_triggered()
     analyzerWindow.exec();
 }
 
+
+void MainWindow::on_checkBox_optimizeGain_stateChanged(int arg1)
+{
+    if (ui->checkBox_optimizeGain->checkState()){
+        ui->spinBox_digitalHeadroom->setEnabled(true);
+    }else{
+       ui->spinBox_digitalHeadroom->setEnabled(false);
+    }
+}
+
diff --git a/source/mainwindow.h b/source/mainwindow.h
index 2311435..4642821 100644
--- a/source/mainwindow.h
+++ b/source/mainwindow.h
@@ -42,6 +42,8 @@ private slots:
 
     void on_actionOpen_Loudness_Analyzer_triggered();
 
+    void on_checkBox_optimizeGain_stateChanged(int arg1);
+
 private:
     Ui::MainWindow *ui;
     cAmp* m_pCAmp;
diff --git a/source/mainwindow.ui b/source/mainwindow.ui
index d6a12bb..32ed940 100644
--- a/source/mainwindow.ui
+++ b/source/mainwindow.ui
@@ -51,6 +51,9 @@
         <layout class="QVBoxLayout" name="verticalLayout_2">
          <item>
           <layout class="QFormLayout" name="formLayout">
+           <property name="labelAlignment">
+            <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+           </property>
            <item row="0" column="0">
             <widget class="QLabel" name="label">
              <property name="text">
@@ -226,6 +229,9 @@
            <property name="sizeConstraint">
             <enum>QLayout::SetDefaultConstraint</enum>
            </property>
+           <property name="labelAlignment">
+            <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+           </property>
            <item row="0" column="0">
             <widget class="QLabel" name="label_4">
              <property name="text">
@@ -407,6 +413,9 @@
         <layout class="QVBoxLayout" name="verticalLayout_4">
          <item>
           <layout class="QFormLayout" name="formLayout_3">
+           <property name="labelAlignment">
+            <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+           </property>
            <item row="0" column="0">
             <widget class="QLabel" name="label_8">
              <property name="text">
@@ -427,16 +436,6 @@
              </property>
             </widget>
            </item>
-           <item row="5" column="0">
-            <widget class="QLabel" name="label_22">
-             <property name="text">
-              <string>Load DAC from library</string>
-             </property>
-            </widget>
-           </item>
-           <item row="5" column="1">
-            <widget class="QComboBox" name="comboBox_dacPreset"/>
-           </item>
            <item row="1" column="0">
             <widget class="QLabel" name="label_23">
              <property name="text">
@@ -444,6 +443,23 @@
              </property>
             </widget>
            </item>
+           <item row="2" column="0">
+            <widget class="QLabel" name="label_25">
+             <property name="text">
+              <string>Output Gain Structure</string>
+             </property>
+            </widget>
+           </item>
+           <item row="2" column="1">
+            <widget class="QCheckBox" name="checkBox_optimizeGain">
+             <property name="text">
+              <string>Optimize</string>
+             </property>
+             <property name="checked">
+              <bool>true</bool>
+             </property>
+            </widget>
+           </item>
            <item row="4" column="1">
             <spacer name="verticalSpacer_5">
              <property name="orientation">
@@ -460,6 +476,16 @@
              </property>
             </spacer>
            </item>
+           <item row="5" column="0">
+            <widget class="QLabel" name="label_22">
+             <property name="text">
+              <string>Load DAC from library</string>
+             </property>
+            </widget>
+           </item>
+           <item row="5" column="1">
+            <widget class="QComboBox" name="comboBox_dacPreset"/>
+           </item>
            <item row="6" column="0" colspan="2">
             <widget class="QPushButton" name="pushButton_loadDac">
              <property name="font">
@@ -472,31 +498,34 @@
              </property>
             </widget>
            </item>
-           <item row="2" column="1">
-            <spacer name="verticalSpacer_7">
-             <property name="orientation">
-              <enum>Qt::Vertical</enum>
-             </property>
-             <property name="sizeHint" stdset="0">
-              <size>
-               <width>20</width>
-               <height>40</height>
-              </size>
-             </property>
-            </spacer>
-           </item>
            <item row="3" column="1">
-            <spacer name="verticalSpacer_8">
-             <property name="orientation">
-              <enum>Qt::Vertical</enum>
+            <widget class="QSpinBox" name="spinBox_digitalHeadroom">
+             <property name="enabled">
+              <bool>true</bool>
              </property>
-             <property name="sizeHint" stdset="0">
-              <size>
-               <width>20</width>
-               <height>40</height>
-              </size>
+             <property name="suffix">
+              <string> dB</string>
              </property>
-            </spacer>
+             <property name="minimum">
+              <number>0</number>
+             </property>
+             <property name="maximum">
+              <number>30</number>
+             </property>
+             <property name="value">
+              <number>5</number>
+             </property>
+            </widget>
+           </item>
+           <item row="3" column="0">
+            <widget class="QLabel" name="label_26">
+             <property name="layoutDirection">
+              <enum>Qt::LeftToRight</enum>
+             </property>
+             <property name="text">
+              <string>Digital Headroom</string>
+             </property>
+            </widget>
            </item>
           </layout>
          </item>
@@ -538,6 +567,12 @@
         <layout class="QVBoxLayout" name="verticalLayout_5">
          <item>
           <layout class="QFormLayout" name="formLayout_4">
+           <property name="labelAlignment">
+            <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+           </property>
+           <property name="formAlignment">
+            <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
+           </property>
            <item row="4" column="0">
             <widget class="QLabel" name="label_9">
              <property name="text">
@@ -568,9 +603,15 @@
            </item>
            <item row="0" column="0">
             <widget class="QLabel" name="label_11">
+             <property name="layoutDirection">
+              <enum>Qt::LeftToRight</enum>
+             </property>
              <property name="text">
               <string>Threshold:</string>
              </property>
+             <property name="alignment">
+              <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+             </property>
             </widget>
            </item>
            <item row="0" column="1">
@@ -655,6 +696,9 @@
         <layout class="QVBoxLayout" name="verticalLayout_6">
          <item>
           <layout class="QFormLayout" name="formLayout_5">
+           <property name="labelAlignment">
+            <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+           </property>
            <item row="4" column="0">
             <widget class="QLabel" name="label_13">
              <property name="text">
@@ -759,6 +803,41 @@
         </layout>
        </widget>
       </item>
+      <item>
+       <widget class="QGroupBox" name="groupBox_6">
+        <property name="font">
+         <font>
+          <pointsize>16</pointsize>
+         </font>
+        </property>
+        <property name="title">
+         <string>Amplifier</string>
+        </property>
+        <layout class="QVBoxLayout" name="verticalLayout_7">
+         <item>
+          <layout class="QFormLayout" name="formLayout_6">
+           <property name="labelAlignment">
+            <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+           </property>
+           <item row="0" column="0">
+            <widget class="QLabel" name="label_27">
+             <property name="text">
+              <string>Input Volume Control:</string>
+             </property>
+            </widget>
+           </item>
+           <item row="0" column="1">
+            <widget class="QLabel" name="label_inputVolumeControl">
+             <property name="text">
+              <string>0 dB</string>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </item>
+        </layout>
+       </widget>
+      </item>
      </layout>
     </item>
    </layout>