add: Audio Info in NowPlayingPanel.cpp ; Includes: Samplerate, bits/sample, and codec

change: opengl dll for windows now is not included, cause it is too large
refactor: Spectrogram colors for bars are now in a Header (GradientPresetHeader.h), with accompaning methods

src/gui/GradientDialog.cpp

@@ -1,4 +1,5 @@
 #include "GradientDialog.h"
+#include "GradientPresetHeader.h"
 #include <QHBoxLayout>
 #include <QVBoxLayout>
 #include <QPushButton>
@@ -8,47 +9,6 @@
 #include <QPixmap>
 #include <QComboBox>
 
-static QVector<QColor> makePreset4(const QColor &c0, const QColor &c1,
-                                   const QColor &c2, const QColor &c3,
-                                   const QColor &c4)
-{
-    return { c0, c2, c3, c4 };
-}
-
-struct Preset {
-    QString name;
-    QVector<QColor> colors;
-};
-
-// Presets are defined in a Vector for simplicity of adding new ones
-static const QVector<Preset> PRESETS = {
-    { "Default",
-     { QColor("#078D70"), QColor("#26CEAA"), QColor("#98E8C1"), QColor("#FFFFFF") } },
-
-    { "Pastels",
-     makePreset4(QColor("#92ccdd"), QColor("#c7eff0"),
-                 QColor("#f5d5fd"), QColor("#fdc4ec"), QColor("#ffc2cb")) },
-
-    { "Raddish",
-     makePreset4(QColor("#ff0000"), QColor("#b40000"),
-                 QColor("#890000"), QColor("#540000"), QColor("#240000")) },
-
-    { "Blau",
-     makePreset4(QColor("#72c8dd"), QColor("#43b5d2"),
-                 QColor("#14a3c7"), QColor("#1293b3"), QColor("#10829f")) },
-
-    { "Turquoise",
-     makePreset4(QColor("#d8f2f6"), QColor("#8bd9ef"),
-                 QColor("#3ec1d5"), QColor("#319aaa"), QColor("#25737f")) },
-
-    { "Aqua",
-     makePreset4(QColor("#2278FB"), QColor("#3A9AF0"),
-                 QColor("#53BDE6"), QColor("#6BDFDB"), QColor("#1A5BB8")) },
-
-    { "Peaches",
-     makePreset4(QColor("#FFCAA6"), QColor("#FDA8A0"),
-                 QColor("#FA879A"), QColor("#F86594"), QColor("#FFE0CC")) }
-};
 
 static int findPresetIndex(const QVector<QColor> &stops)
 {

src/gui/GradientPresetHeader.h

@@ -0,0 +1,54 @@
+#pragma once
+
+#include <QVector>
+#include <QColor>
+#include <QString>
+
+/** preset function */
+inline QVector<QColor> makePreset4(const QColor &c0, const QColor &c1,
+                                   const QColor &c2, const QColor &c3,
+                                   const QColor &c4)
+{
+    // if you dont define c1 as #FFFF worry, cause it does NOT get used!
+    return { c0, c2, c3, c4 }; 
+}
+
+/** Preset Struct */
+struct Preset {
+    QString name;
+    QVector<QColor> colors;
+};
+
+/** Defined Presets */
+inline const QVector<Preset> PRESETS = {
+    { "Default",
+     { QColor("#078D70"), QColor("#26CEAA"), QColor("#98E8C1"), QColor("#FFFFFF") } },
+
+    { "Pastels",
+     makePreset4(QColor("#92ccdd"), QColor("#c7eff0"),
+                 QColor("#f5d5fd"), QColor("#fdc4ec"), QColor("#ffc2cb")) },
+
+    { "Raddish",
+     makePreset4(QColor("#ff0000"), QColor("#b40000"),
+                 QColor("#890000"), QColor("#540000"), QColor("#240000")) },
+
+    { "Blau",
+     makePreset4(QColor("#72c8dd"), QColor("#43b5d2"),
+                 QColor("#14a3c7"), QColor("#1293b3"), QColor("#10829f")) },
+
+    { "Turquoise",
+     makePreset4(QColor("#d8f2f6"), QColor("#8bd9ef"),
+                 QColor("#3ec1d5"), QColor("#319aaa"), QColor("#25737f")) },
+
+    { "Aqua",
+     makePreset4(QColor("#2278FB"), QColor("#3A9AF0"),
+                 QColor("#53BDE6"), QColor("#6BDFDB"), QColor("#1A5BB8")) },
+
+    { "Peaches",
+     makePreset4(QColor("#FFCAA6"), QColor("#FDA8A0"),
+                 QColor("#FA879A"), QColor("#F86594"), QColor("#FFE0CC")) },
+    
+    { "Windows Green",
+    makePreset4(QColor("#BFFFE3"), QColor("#7FFFC2"),
+                QColor("#43FFAC"), QColor("#27FF97"), QColor("#0EDB7D")) },
+};

src/gui/MainWindow.cpp

@@ -48,6 +48,10 @@ MainWindow::MainWindow(QWidget *parent)
             e->positionFrames(),
             e->totalFrames(),
             float(e->sampleRate()));
+        m_nowPlaying->updateAudioInfo(
+            e->sampleRate(),
+            e->bitsPerSample(),
+            e->codecName());
 
         if (e->state() == AudioEngine::State::Stopped)
             m_nowPlaying->setPlaybackActive(false);

src/gui/NowPlayingPanel.cpp

@@ -60,11 +60,22 @@ void NowPlayingPanel::buildLayout()
     transport->addWidget(new QLabel("Volume:"));
     transport->addWidget(m_volSlider);
 
+    auto *metaRow = new QHBoxLayout;
+    metaRow->setSpacing(8);
+    metaRow->addWidget(new QLabel("Sample rate:"));
+    metaRow->addWidget(m_lblSampleRate);
+    metaRow->addWidget(new QLabel("Bits/Sample:"));
+    metaRow->addWidget(m_lblBitsPerSample);
+    metaRow->addWidget(new QLabel("Codec:"));
+    metaRow->addWidget(m_lblCodec);
+    metaRow->addStretch();
+
     auto *right = new QVBoxLayout;
     right->setSpacing(4);
     right->addWidget(m_lblTitle);
     right->addWidget(m_lblArtist);
     right->addWidget(m_lblAlbum);
+    right->addLayout(metaRow);
     right->addLayout(seekRow);
     right->addLayout(transport);
 
@@ -73,14 +84,25 @@ void NowPlayingPanel::buildLayout()
     hlay->addLayout(right, 1);
 }
 
+void NowPlayingPanel::clearAudioInfo()
+{
+    m_lblSampleRate->setText("-");
+    m_lblBitsPerSample->setText("-");
+    m_lblCodec->setText("-");
+}
+
 void NowPlayingPanel::updateTrack(const engine::Track *t)
 {
-    if (!t) return;
+    if (!t) {
+        clearAudioInfo();
+        return;
+    }
     m_cover->setTrack(t);
     m_lblTitle->setText(t->displayTitle());
     m_lblArtist->setText(t->artist);
     m_lblAlbum->setText(t->album +
         (t->year > 0 ? "  (" + QString::number(t->year) + ")" : ""));
+    clearAudioInfo();
     m_seekBar->setValue(0);
     m_btnPlay->setText("Pause");
 }
@@ -101,6 +123,13 @@ void NowPlayingPanel::updatePosition(qint64 posFrames, qint64 totalFrames, float
         m_seekBar->setValue(int(posFrames * 1000 / totalFrames));
 }
 
+void NowPlayingPanel::updateAudioInfo(int sampleRate, int bitsPerSample, const QString &codec)
+{
+    m_lblSampleRate->setText(sampleRate > 0 ? QString("%1 Hz").arg(sampleRate) : "-");
+    m_lblBitsPerSample->setText(bitsPerSample > 0 ? QString("%1").arg(bitsPerSample) : "-");
+    m_lblCodec->setText(!codec.isEmpty() ? codec : "-");
+}
+
 void NowPlayingPanel::setPlaybackActive(bool playing)
 {
     m_btnPlay->setText(playing ? "Pause" : "Play");

src/gui/NowPlayingPanel.h

@@ -20,7 +20,8 @@ public:
 public slots:
     void updateTrack(const engine::Track *track);
     void updatePosition(qint64 posFrames, qint64 totalFrames, float sampleRate);
-    void setPlaybackActive(bool playing);   
+    void updateAudioInfo(int sampleRate, int bitsPerSample, const QString &codec);
+    void setPlaybackActive(bool playing);
 
 signals:
     void playPauseClicked();
@@ -31,12 +32,16 @@ signals:
 
 private:
     void buildLayout();
+    void clearAudioInfo();
 
     CoverArtWidget *m_cover;
     QLabel         *m_lblTitle  = new QLabel("No track selected");
     QLabel         *m_lblArtist = new QLabel(" ");
     QLabel         *m_lblAlbum  = new QLabel(" ");
     QLabel         *m_lblTime   = new QLabel("0:00 / 0:00");
+    QLabel         *m_lblSampleRate = new QLabel("—");
+    QLabel         *m_lblBitsPerSample = new QLabel("-");
+    QLabel         *m_lblCodec      = new QLabel("—");
     QSlider        *m_seekBar   = new QSlider(Qt::Horizontal);
     QPushButton    *m_btnPrev   = new QPushButton("|<");
     QPushButton    *m_btnPlay   = new QPushButton("Play");