From d1333a5ab369fcdab126ae07cdef45e5875c64e4 Mon Sep 17 00:00:00 2001
From: Jean Pierre Cimalando <jp-dev@inbox.ru>
Date: Thu, 26 Mar 2020 16:24:37 +0100
Subject: [PATCH] Add tool to capture Dimension EG curves

---
 CMakeLists.txt          |   5 +
 devtools/CMakeLists.txt |  15 ++
 devtools/CaptureEG.cpp  | 330 +++++++++++++++++++++++++++++++++++++++
 devtools/CaptureEG.h    |  80 ++++++++++
 devtools/CaptureEG.ui   | 334 ++++++++++++++++++++++++++++++++++++++++
 5 files changed, 764 insertions(+)
 create mode 100644 devtools/CMakeLists.txt
 create mode 100644 devtools/CaptureEG.cpp
 create mode 100644 devtools/CaptureEG.h
 create mode 100644 devtools/CaptureEG.ui

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 55a80114..daf8e57b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,6 +30,7 @@ option (SFIZZ_LV2               "Enable LV2 plug-in build [default: ON]" ON)
 option (SFIZZ_VST               "Enable VST plug-in build [default: OFF]" OFF)
 option (SFIZZ_BENCHMARKS        "Enable benchmarks build [default: OFF]" OFF)
 option (SFIZZ_TESTS             "Enable tests build [default: OFF]" OFF)
+option (SFIZZ_DEVTOOLS          "Enable developer tools build [default: OFF]" OFF)
 option (SFIZZ_SHARED            "Enable shared library build [default: ON]" ON)
 option (SFIZZ_USE_VCPKG         "Assume that sfizz is build using vcpkg [default: OFF]" OFF)
 option (SFIZZ_STATIC_LIBSNDFILE "Link libsndfile statically [default: OFF]" OFF)
@@ -64,6 +65,10 @@ if (SFIZZ_TESTS)
     add_subdirectory (tests)
 endif()
 
+if (SFIZZ_DEVTOOLS)
+    add_subdirectory (devtools)
+endif()
+
 # Put it at the end so that the vst/lv2 directories are registered
 if (NOT MSVC)
     include(SfizzUninstall)
diff --git a/devtools/CMakeLists.txt b/devtools/CMakeLists.txt
new file mode 100644
index 00000000..e4250d9c
--- /dev/null
+++ b/devtools/CMakeLists.txt
@@ -0,0 +1,15 @@
+###############################
+# Developer tools
+
+find_package(PkgConfig)
+if(PKGCONFIG_FOUND)
+pkg_check_modules(JACK "jack")
+endif()
+find_package(Qt5 COMPONENTS Widgets)
+
+if(JACK_FOUND AND TARGET Qt5::Widgets)
+    add_executable(sfizz_capture_eg CaptureEG.cpp)
+    target_include_directories(sfizz_capture_eg PRIVATE . ${JACK_INCLUDE_DIRS})
+    target_link_libraries(sfizz_capture_eg PRIVATE sfizz-sndfile Qt5::Widgets ${JACK_LIBRARIES})
+    set_target_properties(sfizz_capture_eg PROPERTIES AUTOUIC ON)
+endif()
diff --git a/devtools/CaptureEG.cpp b/devtools/CaptureEG.cpp
new file mode 100644
index 00000000..171248ca
--- /dev/null
+++ b/devtools/CaptureEG.cpp
@@ -0,0 +1,330 @@
+// SPDX-License-Identifier: BSD-2-Clause
+
+// This code is part of the sfizz library and is licensed under a BSD 2-clause
+// license. You should have receive a LICENSE.md file along with the code.
+// If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
+
+#include "CaptureEG.h"
+#include "ui_CaptureEG.h"
+#include <QMessageBox>
+#include <QFileDialog>
+#include <QMouseEvent>
+#include <QDrag>
+#include <QMimeData>
+#include <QTimer>
+#include <QStandardPaths>
+#include <QFileInfo>
+#include <QDir>
+#include <QDebug>
+#include <sndfile.hh>
+#include <cmath>
+
+Application::Application(int& argc, char *argv[])
+    : QApplication(argc, argv), _ui(new Ui::MainWindow)
+{
+    setApplicationName("SfizzCaptureEG");
+}
+
+Application::~Application()
+{
+}
+
+bool Application::init()
+{
+    _cacheDir = QStandardPaths::writableLocation(QStandardPaths::CacheLocation);
+    if (_cacheDir.isEmpty()) {
+        QMessageBox::critical(nullptr, tr("Error"), tr("Cannot determine the cache directory."));
+        return false;
+    }
+    QDir(_cacheDir).mkpath(".");
+
+    ///
+    jack_client_t* client = jack_client_open(
+        applicationName().toUtf8().data(), JackNoStartServer, nullptr);
+
+    if (!client) {
+        QMessageBox::critical(nullptr, tr("Error"), tr("Cannot register a new JACK client."));
+        return false;
+    }
+    _client.reset(client);
+
+    std::string clientName = jack_get_client_name(client);
+
+    if (!(_portAudioIn = jack_port_register(client, "audio_in", JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0)) ||
+        !(_portMidiOut = jack_port_register(client, "midi_out", JACK_DEFAULT_MIDI_TYPE, JackPortIsOutput, 0)))
+    {
+        QMessageBox::critical(nullptr, tr("Error"), tr("Cannot register the JACK client ports."));
+        return false;
+    }
+
+    jack_set_process_callback(client, &processAudio, this);
+
+    if (jack_activate(client) != 0) {
+        QMessageBox::critical(nullptr, tr("Error"), tr("Cannot activate the JACK client."));
+        return false;
+    }
+
+    // Try to connect Dimension if it exists
+    {
+        const char** synthAudioPorts = jack_get_ports(client, "^Dimension Pro:", JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput);
+        const char** synthMidiPorts = jack_get_ports(client, "^Dimension Pro:", JACK_DEFAULT_MIDI_TYPE, JackPortIsInput);
+        if (synthAudioPorts && *synthAudioPorts)
+            jack_connect(client, *synthAudioPorts, jack_port_name(_portAudioIn));
+        if (synthMidiPorts && *synthMidiPorts)
+            jack_connect(client, jack_port_name(_portMidiOut), *synthMidiPorts);
+        jack_free(synthAudioPorts);
+        jack_free(synthMidiPorts);
+    }
+
+    // Allocate capture buffer (capacity 30 seconds)
+    double sampleRate = jack_get_sample_rate(client);
+    _captureCapacity = static_cast<size_t>(std::ceil(30.0 * sampleRate));
+    _captureBuffer.reset(new float[_captureCapacity]);
+    // Always capture a minimum of 0.5 seconds (ensure not stopping too early)
+    _captureMinFrames = static_cast<size_t>(std::ceil(0.5 * sampleRate));
+
+    ///
+    QMainWindow* window = new QMainWindow;
+    _window = window;
+    _ui->setupUi(window);
+    window->setWindowTitle(applicationDisplayName());
+    window->adjustSize();
+    window->setFixedSize(window->size());
+    window->show();
+
+    _ui->dragFileLabel->setDragFilePath(getSfzPath());
+    _ui->dragFileLabel->setPixmap(
+        QIcon::fromTheme("text-x-generic").pixmap(_ui->dragFileLabel->size()));
+
+    _ui->releaseTimeVal->setRange(0.0, 10.0);
+    _ui->releaseTimeVal->setValue(5.0);
+
+    _ui->internalGainVal->setRange(0.1, 2.0);
+    _ui->internalGainVal->setValue(0.342); // default to match Dimension
+
+    _ui->saveButton->setEnabled(false);
+
+    connect(
+        _ui->envelopeEdit, &QPlainTextEdit::textChanged,
+        this, [this]() { onSfzTextChanged(); });
+
+    connect(
+        _ui->captureButton, &QPushButton::clicked,
+        this, [this]() { engageCapture(); });
+
+    connect(
+        _ui->saveButton, &QPushButton::clicked,
+        this, [this]() { saveCapture(); });
+
+    _sfzUpdateTimer = new QTimer;
+    _sfzUpdateTimer->setInterval(500);
+    _sfzUpdateTimer->setSingleShot(true);
+    connect(_sfzUpdateTimer, &QTimer::timeout, this, [this]() { performSfzUpdate(); });
+
+    _idleTimer = new QTimer;
+    _idleTimer->setInterval(50);
+    _idleTimer->setSingleShot(false);
+    connect(_idleTimer, &QTimer::timeout, this, [this]() { performIdleChecks(); });
+
+    _idleTimer->start();
+
+    onSfzTextChanged();
+
+    return true;
+}
+
+int Application::processAudio(unsigned numFrames, void* arg)
+{
+    auto* self = static_cast<Application*>(arg);
+
+    const float* audioIn = static_cast<float*>(jack_port_get_buffer(self->_portAudioIn, numFrames));
+    void* midiOut = jack_port_get_buffer(self->_portMidiOut, numFrames);
+
+    jack_midi_clear_buffer(midiOut);
+
+    if (self->_captureStatus != CaptureEngaged)
+        return 0;
+
+    bool over = false;
+
+    size_t captureIndex = self->_captureFill;
+    const size_t captureCapacity = self->_captureCapacity;
+    const size_t captureMinFrames = self->_captureMinFrames;
+    float* captureBuffer = self->_captureBuffer.get();
+
+    constexpr float silentThreshold = 1e-4; // -80 dB
+
+    long tt = self->_framesLeftToTrigger;
+    long tr = self->_framesLeftToRelease;
+
+    for (size_t i = 0; i < numFrames && !over; ++i) {
+        if (tt == 0) {
+            const unsigned char noteOn[3] = {0x90, 69, 127};
+            jack_midi_event_write(midiOut, i, noteOn, sizeof(noteOn));
+        }
+        if (tr == 0) {
+            const unsigned char noteOff[3] = {0x90, 69, 0};
+            jack_midi_event_write(midiOut, i, noteOff, sizeof(noteOff));
+        }
+        --tt;
+        --tr;
+        if (captureIndex == captureCapacity)
+            over = true;
+        else {
+            captureBuffer[captureIndex++] = audioIn[i];
+            if (tr < 0 && captureIndex >= captureMinFrames && audioIn[i] < silentThreshold)
+                over = true;
+        }
+    }
+
+    self->_captureFill = captureIndex;
+    self->_framesLeftToTrigger = tt;
+    self->_framesLeftToRelease = tr;
+
+    if (over)
+        self->_captureStatus = CaptureOver;
+
+    return 0;
+}
+
+QString Application::getSfzPath() const
+{
+    return _cacheDir + "/CaptureEG.sfz";
+}
+
+QString Application::getSamplePath() const
+{
+    return _cacheDir + "/CaptureEG.wav";
+}
+
+void Application::onSfzTextChanged()
+{
+    _ui->dragFileLabel->setEnabled(false);
+    _sfzUpdateTimer->start();
+}
+
+void Application::engageCapture()
+{
+    if (_captureStatus != CaptureIdle)
+        return;
+
+    _ui->saveButton->setEnabled(false);
+
+    const double sampleRate = jack_get_sample_rate(_client.get());
+
+    _framesLeftToTrigger = 0;
+    _framesLeftToRelease = static_cast<size_t>(std::ceil(sampleRate * _ui->releaseTimeVal->value()));
+    _captureFill = 0;
+
+    _captureStatus = CaptureEngaged;
+}
+
+void Application::saveCapture()
+{
+    if (_captureStatus != CaptureIdle)
+        return;
+
+    QString filePath = QFileDialog::getSaveFileName(
+        _window, tr("Save data"), QString(), tr("Data files (*.dat)"));
+    if (filePath.isEmpty())
+        return;
+
+    QFile file(filePath);
+    file.open(QFile::WriteOnly|QFile::Truncate);
+    QTextStream stream(&file);
+
+    const float *data = _captureBuffer.get();
+    size_t size = _captureFill;
+    double sampleRate = jack_get_sample_rate(_client.get());
+    double scaleFactor = 1.0 / _ui->internalGainVal->value();
+
+    for (size_t i = 0; i < size; ++i)
+        stream << (i / sampleRate) << ' ' << (scaleFactor * data[i]) << '\n';
+}
+
+void Application::performSfzUpdate()
+{
+    const QString sfzPath = getSfzPath();
+    const QString samplePath = getSamplePath();
+
+    QString code;
+    code += "<region>\n";
+    code += "sample="; code += QFileInfo(samplePath).fileName(); code += "\n";
+    code += _ui->envelopeEdit->toPlainText();
+
+    QFile sfzFile(sfzPath);
+    sfzFile.open(QFile::WriteOnly|QFile::Truncate);
+    sfzFile.write(code.toUtf8());
+    sfzFile.close();
+
+    if (!QFile::exists(samplePath)) {
+        // generate all-1s sound file of 30 seconds length
+        constexpr float sampleRate = 44100.0;
+        constexpr float duration = 30.0;
+        constexpr size_t channels = 2;
+        size_t frames = static_cast<size_t>(std::ceil(sampleRate * duration));
+
+        SndfileHandle snd(
+            samplePath.toUtf8().data(),
+            SFM_WRITE, SF_FORMAT_PCM_16|SF_FORMAT_WAV, 2, sampleRate);
+
+        float frameData[channels];
+        for (size_t i = 0; i < channels; ++i)
+            frameData[i] = 1.0;
+
+        for (size_t i = 0; i < frames; ++i)
+            snd.writef(frameData, 1);
+
+        snd.writeSync();
+
+        if (snd.error())
+            QFile::remove(samplePath);
+    }
+
+    _ui->dragFileLabel->setEnabled(true);
+}
+
+void Application::performIdleChecks()
+{
+    if (_captureStatus == CaptureOver) {
+        _captureStatus = CaptureIdle;
+        _ui->saveButton->setEnabled(true);
+    }
+}
+
+//------------------------------------------------------------------------------
+
+void DragFileLabel::setDragFilePath(const QString& path)
+{
+    _dragFilePath = path;
+}
+
+void DragFileLabel::mousePressEvent(QMouseEvent *event)
+{
+    if (!_dragFilePath.isEmpty() && event->button() == Qt::LeftButton && rect().contains(event->pos())) {
+        QMimeData *mimeData = new QMimeData;
+        mimeData->setUrls(QList<QUrl>() << QUrl::fromLocalFile(_dragFilePath));
+
+        QDrag *drag = new QDrag(this);
+        drag->setMimeData(mimeData);
+        drag->exec();
+        drag->deleteLater();
+
+        event->accept();
+        return;
+    }
+
+    QLabel::mousePressEvent(event);
+}
+
+//------------------------------------------------------------------------------
+
+int main(int argc, char* argv[])
+{
+    Application app(argc, argv);
+
+    if (!app.init())
+        return 1;
+
+    return app.exec();
+}
diff --git a/devtools/CaptureEG.h b/devtools/CaptureEG.h
new file mode 100644
index 00000000..3d4a61d5
--- /dev/null
+++ b/devtools/CaptureEG.h
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: BSD-2-Clause
+
+// This code is part of the sfizz library and is licensed under a BSD 2-clause
+// license. You should have receive a LICENSE.md file along with the code.
+// If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
+
+#pragma once
+#include <QApplication>
+#include <QLabel>
+#include <QString>
+#include <jack/jack.h>
+#include <jack/midiport.h>
+#include <memory>
+#include <atomic>
+class QMainWindow;
+namespace Ui { class MainWindow; }
+
+class Application : public QApplication {
+public:
+    Application(int& argc, char *argv[]);
+    ~Application();
+    bool init();
+
+private:
+    static int processAudio(unsigned numFrames, void* arg);
+
+private:
+    QMainWindow* _window = nullptr;
+    std::unique_ptr<Ui::MainWindow> _ui;
+
+    QTimer* _sfzUpdateTimer = nullptr;
+    QTimer* _idleTimer = nullptr;
+    QString _cacheDir;
+
+    QString getSfzPath() const;
+    QString getSamplePath() const;
+
+    void onSfzTextChanged();
+    void engageCapture();
+    void saveCapture();
+
+    void performSfzUpdate();
+    void performIdleChecks();
+
+private:
+    // capture status
+    enum CaptureStatus { CaptureIdle, CaptureEngaged, CaptureOver };
+    std::atomic<CaptureStatus> _captureStatus { CaptureIdle };
+    //
+    bool _capturing = false;
+    long _framesLeftToTrigger = 0;
+    long _framesLeftToRelease = 0;
+    std::unique_ptr<float[]> _captureBuffer;
+    size_t _captureCapacity = 0;
+    size_t _captureMinFrames = 0;
+    size_t _captureFill = 0;
+
+private:
+    struct jack_client_delete {
+        void operator()(jack_client_t* x) const noexcept { jack_client_close(x); }
+    };
+
+    std::unique_ptr<jack_client_t, jack_client_delete> _client;
+    jack_port_t* _portAudioIn = nullptr;
+    jack_port_t* _portMidiOut = nullptr;
+};
+
+//------------------------------------------------------------------------------
+
+class DragFileLabel : public QLabel {
+public:
+    using QLabel::QLabel;
+
+    void setDragFilePath(const QString& path);
+
+    void mousePressEvent(QMouseEvent *event) override;
+
+private:
+    QString _dragFilePath;
+};
diff --git a/devtools/CaptureEG.ui b/devtools/CaptureEG.ui
new file mode 100644
index 00000000..7cfe4c62
--- /dev/null
+++ b/devtools/CaptureEG.ui
@@ -0,0 +1,334 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>833</width>
+    <height>337</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>MainWindow</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <layout class="QHBoxLayout" name="horizontalLayout_3">
+    <item>
+     <widget class="QWidget" name="" native="true">
+      <layout class="QVBoxLayout" name="verticalLayout_3">
+       <item>
+        <widget class="QGroupBox" name="groupBox">
+         <property name="title">
+          <string>Step 1</string>
+         </property>
+         <layout class="QVBoxLayout" name="verticalLayout_5">
+          <item>
+           <widget class="QLabel" name="label_3">
+            <property name="font">
+             <font>
+              <weight>75</weight>
+              <bold>true</bold>
+             </font>
+            </property>
+            <property name="text">
+             <string>Configure player</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QLabel" name="label_5">
+            <property name="text">
+             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Connect audio and MIDI to Dimension synth.&lt;/p&gt;&lt;p&gt;Initialize the program.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QFrame" name="frame">
+            <property name="frameShape">
+             <enum>QFrame::Box</enum>
+            </property>
+            <property name="frameShadow">
+             <enum>QFrame::Raised</enum>
+            </property>
+            <layout class="QHBoxLayout" name="horizontalLayout_5">
+             <item>
+              <widget class="QLabel" name="label_6">
+               <property name="text">
+                <string>Synth internal gain</string>
+               </property>
+              </widget>
+             </item>
+             <item>
+              <widget class="QDoubleSpinBox" name="internalGainVal">
+               <property name="decimals">
+                <number>3</number>
+               </property>
+              </widget>
+             </item>
+            </layout>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
+       <item>
+        <spacer name="verticalSpacer">
+         <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>
+        <widget class="QGroupBox" name="groupBox_6">
+         <property name="title">
+          <string>Step 2</string>
+         </property>
+         <layout class="QVBoxLayout" name="verticalLayout_6">
+          <item>
+           <widget class="QLabel" name="label_4">
+            <property name="font">
+             <font>
+              <weight>75</weight>
+              <bold>true</bold>
+             </font>
+            </property>
+            <property name="text">
+             <string>Enter the time of release</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QDoubleSpinBox" name="releaseTimeVal"/>
+          </item>
+         </layout>
+        </widget>
+       </item>
+       <item>
+        <spacer name="verticalSpacer_2">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
+     </widget>
+    </item>
+    <item>
+     <widget class="QGroupBox" name="groupBox_2">
+      <property name="title">
+       <string>Step 3</string>
+      </property>
+      <layout class="QVBoxLayout" name="verticalLayout_2">
+       <item>
+        <widget class="QLabel" name="label_2">
+         <property name="font">
+          <font>
+           <weight>75</weight>
+           <bold>true</bold>
+          </font>
+         </property>
+         <property name="text">
+          <string>Edit envelope opcodes</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPlainTextEdit" name="envelopeEdit">
+         <property name="plainText">
+          <string>ampeg_attack=1
+ampeg_hold=0
+ampeg_decay=1
+ampeg_sustain=50
+ampeg_release=1
+</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </widget>
+    </item>
+    <item>
+     <widget class="QWidget" name="" native="true">
+      <layout class="QVBoxLayout" name="verticalLayout_4">
+       <item>
+        <widget class="QGroupBox" name="groupBox_3">
+         <property name="title">
+          <string>Step 4</string>
+         </property>
+         <layout class="QHBoxLayout" name="horizontalLayout">
+          <item>
+           <spacer name="horizontalSpacer">
+            <property name="orientation">
+             <enum>Qt::Horizontal</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>58</width>
+              <height>20</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+          <item>
+           <layout class="QVBoxLayout" name="verticalLayout">
+            <item>
+             <widget class="DragFileLabel" name="dragFileLabel">
+              <property name="minimumSize">
+               <size>
+                <width>100</width>
+                <height>100</height>
+               </size>
+              </property>
+              <property name="frameShape">
+               <enum>QFrame::Panel</enum>
+              </property>
+              <property name="frameShadow">
+               <enum>QFrame::Raised</enum>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QLabel" name="label">
+              <property name="font">
+               <font>
+                <weight>75</weight>
+                <bold>true</bold>
+               </font>
+              </property>
+              <property name="text">
+               <string>Drag SFZ to player</string>
+              </property>
+             </widget>
+            </item>
+           </layout>
+          </item>
+          <item>
+           <spacer name="horizontalSpacer_2">
+            <property name="orientation">
+             <enum>Qt::Horizontal</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>57</width>
+              <height>20</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+         </layout>
+        </widget>
+       </item>
+       <item>
+        <widget class="QGroupBox" name="groupBox_4">
+         <property name="title">
+          <string>Step 5</string>
+         </property>
+         <layout class="QHBoxLayout" name="horizontalLayout_2">
+          <item>
+           <spacer name="horizontalSpacer_3">
+            <property name="orientation">
+             <enum>Qt::Horizontal</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>40</width>
+              <height>20</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+          <item>
+           <widget class="QPushButton" name="captureButton">
+            <property name="text">
+             <string>Start capture</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <spacer name="horizontalSpacer_4">
+            <property name="orientation">
+             <enum>Qt::Horizontal</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>40</width>
+              <height>20</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+         </layout>
+        </widget>
+       </item>
+       <item>
+        <widget class="QGroupBox" name="groupBox_5">
+         <property name="title">
+          <string>Step 6</string>
+         </property>
+         <layout class="QHBoxLayout" name="horizontalLayout_4">
+          <item>
+           <spacer name="horizontalSpacer_5">
+            <property name="orientation">
+             <enum>Qt::Horizontal</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>40</width>
+              <height>20</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+          <item>
+           <widget class="QPushButton" name="saveButton">
+            <property name="text">
+             <string>Save data</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <spacer name="horizontalSpacer_6">
+            <property name="orientation">
+             <enum>Qt::Horizontal</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>40</width>
+              <height>20</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+         </layout>
+        </widget>
+       </item>
+      </layout>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>DragFileLabel</class>
+   <extends>QLabel</extends>
+   <header>CaptureEG.h</header>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections/>
+</ui>