From abf6a9260a18bc5d4e69e9c7b8bce35509ade816 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Sun, 28 Feb 2016 20:55:41 -0800
Subject: [PATCH] Add an option to select between UHJ and pair-wise mixing.

---
 utils/alsoft-config/mainwindow.cpp | 17 +++++++++++
 utils/alsoft-config/mainwindow.ui  | 48 ++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+)

diff --git a/utils/alsoft-config/mainwindow.cpp b/utils/alsoft-config/mainwindow.cpp
index 81b3a8e8..f072773a 100644
--- a/utils/alsoft-config/mainwindow.cpp
+++ b/utils/alsoft-config/mainwindow.cpp
@@ -269,6 +269,8 @@ MainWindow::MainWindow(QWidget *parent) :
     connect(ui->periodCountSlider, SIGNAL(valueChanged(int)), this, SLOT(updatePeriodCountEdit(int)));
     connect(ui->periodCountEdit, SIGNAL(editingFinished()), this, SLOT(updatePeriodCountSlider()));
 
+    connect(ui->stereoPanningComboBox, SIGNAL(currentIndexChanged(QString)), this, SLOT(enableApplyButton()));
+
     connect(ui->preferredHrtfComboBox, SIGNAL(currentIndexChanged(const QString&)), this, SLOT(enableApplyButton()));
     connect(ui->hrtfStateComboBox, SIGNAL(currentIndexChanged(const QString&)), this, SLOT(enableApplyButton()));
     connect(ui->hrtfAddButton, SIGNAL(clicked()), this, SLOT(addHrtfFile()));
@@ -539,6 +541,14 @@ void MainWindow::loadConfig(const QString &fname)
         updatePeriodCountSlider();
     }
 
+    QString stereopan = settings.value("stereo-panning").toString();
+    if(stereopan == "uhj")
+        ui->stereoPanningComboBox->setCurrentIndex(1);
+    else if(stereopan == "paired")
+        ui->stereoPanningComboBox->setCurrentIndex(2);
+    else
+        ui->stereoPanningComboBox->setCurrentIndex(0);
+
     QStringList disabledCpuExts = settings.value("disable-cpu-exts").toStringList();
     if(disabledCpuExts.size() == 1)
         disabledCpuExts = disabledCpuExts[0].split(QChar(','));
@@ -767,6 +777,13 @@ void MainWindow::saveConfig(const QString &fname) const
         }
     }
 
+    if(ui->stereoPanningComboBox->currentIndex() == 1)
+        settings.setValue("stereo-panning", "uhj");
+    else if(ui->stereoPanningComboBox->currentIndex() == 2)
+        settings.setValue("stereo-panning", "paired");
+    else
+        settings.remove("stereo-panning");
+
     QStringList strlist;
     if(!ui->enableSSECheckBox->isChecked())
         strlist.append("sse");
diff --git a/utils/alsoft-config/mainwindow.ui b/utils/alsoft-config/mainwindow.ui
index 3c6629f0..8eb3162c 100644
--- a/utils/alsoft-config/mainwindow.ui
+++ b/utils/alsoft-config/mainwindow.ui
@@ -428,6 +428,54 @@ frames needed for each mixing update.</string>
         </widget>
        </widget>
       </widget>
+      <widget class="QComboBox" name="stereoPanningComboBox">
+       <property name="geometry">
+        <rect>
+         <x>130</x>
+         <y>130</y>
+         <width>131</width>
+         <height>22</height>
+        </rect>
+       </property>
+       <property name="toolTip">
+        <string>Selects the panning method for non-HRTF stereo
+mixing. UHJ creates stereo-compatible two-channel
+output, which encodes some surround information.
+Pair-Wise uses standard pair-wise panning between
+-30 and +30 degrees. The default is UHJ.</string>
+       </property>
+       <item>
+        <property name="text">
+         <string>Default</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>UHJ</string>
+        </property>
+       </item>
+       <item>
+        <property name="text">
+         <string>Pair-Wise</string>
+        </property>
+       </item>
+      </widget>
+      <widget class="QLabel" name="label_19">
+       <property name="geometry">
+        <rect>
+         <x>20</x>
+         <y>130</y>
+         <width>101</width>
+         <height>21</height>
+        </rect>
+       </property>
+       <property name="text">
+        <string>Stereo Panning:</string>
+       </property>
+       <property name="alignment">
+        <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+       </property>
+      </widget>
      </widget>
      <widget class="QGroupBox" name="groupBox_4">
       <property name="geometry">