UI: only show chapter button when chapter info available

.github/workflows/windows.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         include:
-          - qt_ver: '6.9.0'
+          - qt_ver: '6.9.1'
             vs: '2022'
             aqt_arch: 'win64_msvc2022_64'
             msvc_arch: 'x64'
@@ -35,22 +35,31 @@ jobs:
         :: ------ dep ------
         set CMAKE_PREFIX_PATH=%PWD%/dependencies_bin
         mkdir dependencies_src
-        :: ===== ECM =====
+        echo ::group::===== ECM =====
         git clone -q https://invent.kde.org/frameworks/extra-cmake-modules.git dependencies_src/extra-cmake-modules
         cmake .\dependencies_src\extra-cmake-modules -Bbuild_dependencies/extra-cmake-modules -DCMAKE_INSTALL_PREFIX="dependencies_bin" -DBUILD_TESTING=OFF || goto :error
         cmake --build build_dependencies/extra-cmake-modules --config Release --target=install || goto :error
-        :: ===== Gperf (required by KCodecs) =====
+        echo ::endgroup::
+        echo ::group::===== FFmpeg =====
+        curl -fsSL -o ffmpeg-shared.7z https://github.com/GyanD/codexffmpeg/releases/download/7.1.1/ffmpeg-7.1.1-full_build-shared.7z
+        7z x ffmpeg-shared.7z -y -o"dependencies_src"
+        set FFMPEG_ROOT=%PWD%\dependencies_src\ffmpeg-7.1.1-full_build-shared
+        echo ::endgroup::
+        echo ::group::===== Gperf (required by KCodecs) =====
         choco install gperf
-        :: ===== KCodecs =====
+        echo ::endgroup::
+        echo ::group::===== KCodecs =====
         git clone -q https://invent.kde.org/frameworks/kcodecs.git dependencies_src/kcodecs
         cmake .\dependencies_src\kcodecs -Bbuild_dependencies/kcodecs -DCMAKE_INSTALL_PREFIX="dependencies_bin" -DBUILD_TESTING=OFF || goto :error
         cmake --build build_dependencies/kcodecs --config Release --target=install || goto :error
-        :: ===== taglib =====
+        echo ::endgroup::
+        echo ::group::===== taglib =====
         git clone --recurse-submodules -q https://github.com/taglib/taglib.git dependencies_src/taglib
         cmake .\dependencies_src\taglib -Bbuild_dependencies/taglib -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX="dependencies_bin" || goto :error
         cmake --build build_dependencies/taglib --config Release --target=install -j || goto :error
+        echo ::endgroup::
         :: ------ app ------
-        cmake -Bbuild . -DUSE_QTEXTCODEC=ON -DCMAKE_INSTALL_PREFIX="%PWD%\build\" || goto :error
+        cmake -Bbuild . -DUSE_QTEXTCODEC=ON -DCMAKE_INSTALL_PREFIX='%PWD%\build\' || goto :error
         cmake --build build --config Release -j || goto :error
         cmake --build build --config Release --target=install || goto :error
         :: ------ pkg ------

.gitignore

@@ -1,8 +1,10 @@
 # Common build folder
 [Bb]uild/
+build-*/
 
 # IDE folder
 .vscode/
+.idea/
 
 # User config file
 CMakeLists.txt.user*

CMakeLists.txt

@@ -18,6 +18,7 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 option(USE_QTEXTCODEC "Use QTextCodec instead of QStringConverter, in case Qt is not built with ICU" OFF)
 
 find_package(Qt6 6.6 COMPONENTS Widgets Multimedia Network LinguistTools REQUIRED)
+find_package(FFmpeg COMPONENTS avutil avformat)
 find_package(TagLib 2.0.0)
 find_package(KF6Codecs 6.1.0)
 
@@ -57,6 +58,7 @@ set (PMUSIC_HEADER_FILES
     lyricsmanager.h
     fftspectrum.h
     playbackprogressindicator.h
+    taskbarmanager.h
 )
 
 set (PMUSIC_UI_FILES
@@ -83,6 +85,9 @@ TS_FILES
 
 if (WIN32)
     target_sources(${EXE_NAME} PRIVATE assets/pineapple-music.rc)
+    target_sources(${EXE_NAME} PRIVATE taskbarmanager.cpp)
+else ()
+    target_sources(${EXE_NAME} PRIVATE taskbarmanager_dummy.cpp)
 endif ()
 
 if (NOT TagLib_FOUND)
@@ -96,6 +101,11 @@ if (TARGET KF6::Codecs)
     target_link_libraries (${EXE_NAME} PRIVATE KF6::Codecs)
 endif ()
 
+if (FFmpeg_FOUND)
+    target_compile_definitions(${EXE_NAME} PRIVATE HAVE_FFMPEG=1)
+    target_link_libraries (${EXE_NAME} PRIVATE FFmpeg::avutil FFmpeg::avformat)
+endif ()
+
 target_link_libraries(${EXE_NAME} PRIVATE Qt::Widgets Qt::Multimedia Qt::Network kissfft::kissfft)
 
 if (USE_QTEXTCODEC)

README.md

@@ -7,9 +7,11 @@ Since **I** just need a simple player which *just works* right now, so I did man
 We have the following features:
 
 - [Sidecar](https://en.wikipedia.org/wiki/Sidecar_file) lyrics file (`.lrc`) support with an optional desktop lyrics bar widget
-- Sidecar chapter file support
+- Chapter file support
-  - [YouTube-style chapter](https://support.google.com/youtube/answer/9884579) saved to a plain text file with `.chp` suffix
+  - Sidecar chapter file support:
-  - PotPlayer `.pbf` file, `[Bookmark]`s as chapters
+    - [YouTube-style chapter](https://support.google.com/youtube/answer/9884579) saved to a plain text file with `.chp` suffix
+    - PotPlayer `.pbf` file, `[Bookmark]`s as chapters
+  - Built-in chapter support (require build with FFmpeg)
 - Auto-load all audio files in the same folder of the file that you attempted to play, into a playlist
 
 These features are not available, some of them are TBD and others are not planned:
@@ -21,7 +23,6 @@ These features are not available, some of them are TBD and others are not planne
 - Limited system integration:
   - No [SMTC](https://learn.microsoft.com/en-us/uwp/api/windows.media.systemmediatransportcontrols) support under Windows for now
   - No [MPRIS](https://www.freedesktop.org/wiki/Specifications/mpris-spec/) support under Linux desktop for now
-  - No "playback progress on taskbar icon" and "taskbar thumbnail buttons" support whatever on Windows or Linux desktop for now
 - Limited lyrics (`.lrc`) loading support:
   - Currently no `.tlrc` (for translated lyrics) or `.rlrc` (for romanized lyrics) support.
   - Multi-line lyrics and duplicated timestamps are not supported
@@ -31,10 +32,14 @@ These features are not available, some of them are TBD and others are not planne
 
 Current state, we need:
 
- - `cmake` as the build system.
+- `cmake` as the build system.
- - `qt6` with `qt6-multimedia` since we use it for playback.
+- `qt6` with `qt6-multimedia` since we use it for playback.
- - `taglib` to get the audio file properties.
+- `kissfft` for FFT support (will be downloaded at configure-time by `cmake`).
- - `kissfft` for FFT support (will be downloaded at configure-time by `cmake`).
+- (optional) `taglib` to get the audio file properties.
+- (optional) `kf6codecs` to get the lyrics encoding correct.
+- (optional) `ffmpeg` to get the audio chapter properties.
+  - It's suggested to use the same FFmpeg version that Qt Multimedia uses, so we can reuse the FFmpeg library binaries that Qt uses.
+    - You can know the version by checking [Qt documentation's FFmpeg attribution page](https://doc.qt.io/qt-6.9/qtmultimedia-attribution-ffmpeg.html)
 
 Then we can build it with any proper c++ compiler like g++ or msvc.
 

fftspectrum.cpp

@@ -11,6 +11,11 @@
 #include <QPainter>
 
 #include <kissfft.hh>
+#include <cmath>
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
 
 FFTSpectrum::FFTSpectrum(QWidget* parent)
     : QWidget(parent)
@@ -81,14 +86,35 @@ FFTSpectrum::FFTSpectrum(QWidget* parent)
             qWarning() << "Unsupported format or channel config:" << sampleFormat << channelConfig;
             return;
         }
+        // Apply Hanning window to reduce spectral leakage
+        for (int i = 0; i < frameCount; ++i) {
+            float window = 0.5f * (1.0f - cos(2.0f * M_PI * i / (frameCount - 1)));
+            samples[i].real(samples[i].real() * window);
+        }
         fft.transform(samples.data(), mass.data());
-        m_freq.resize(frameCount);
+        // Use only the first half of FFT result (positive frequencies)
-        for (int i = 0; i < frameCount; i++) {
+        int spectrumSize = frameCount / 2;
+        m_freq.resize(spectrumSize);
+        for (int i = 0; i < spectrumSize; i++) {
             m_freq[i] = sqrt(mass[i].real() * mass[i].real() + mass[i].imag() * mass[i].imag());
         }
+
+        // Remove DC component and very low frequencies (like most spectrum analyzers do)
+        // DC component (0 Hz) is usually not musically relevant
+        m_freq[0] = 0;
+
+        // Optionally remove the first few bins (very low frequencies below ~20Hz)
+        // Calculate how many bins correspond to frequencies below 20Hz
+        int sampleRate = fmt.sampleRate();
+        int lowFreqCutoff = std::min(3, (20 * frameCount) / (sampleRate * 2)); // Limit to first 3 bins max
+        for (int i = 1; i <= lowFreqCutoff && i < spectrumSize; i++) {
+            m_freq[i] *= (float(i) / float(lowFreqCutoff + 1)); // Gradual fade-in instead of hard cut
+        }
+
         for (auto& val : m_freq) {
             val = log10(val + 1);
         }
+
         update();
     });
 #endif // QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
@@ -113,11 +139,19 @@ void FFTSpectrum::paintEvent(QPaintEvent* e)
     if (!m_freq.empty()) {
         int width = this->width();
         int height = this->height();
-        int barWidth = std::max(1, (int)(width / m_freq.size()));
+        int barWidth = std::max(1, width / static_cast<int>(m_freq.size()));
-        for (int i = 0; i < m_freq.size(); i++) {
+
-            int barHeight = static_cast<int>(sqrt(m_freq[i]) * height * 0.5);
+        for (size_t i = 0; i < m_freq.size(); i++) {
-            QColor color(70, 130, 180, std::min(255, (int)(140 * m_freq[i]) + 90));
+            // Use sqrt to compress the range similar to original, but safer
-            painter.fillRect(i * barWidth, height - barHeight, barWidth, barHeight, color);
+            int barHeight = static_cast<int>(sqrt(std::max(0.0f, m_freq[i])) * height * 0.5);
+            barHeight = std::max(0, std::min(barHeight, height));
+
+            // Calculate alpha based on frequency value, similar to original
+            int alpha = std::min(255, static_cast<int>(140 * m_freq[i]) + 90);
+            alpha = std::max(90, alpha);
+
+            QColor color(70, 130, 180, alpha);
+            painter.fillRect(static_cast<int>(i) * barWidth, height - barHeight, barWidth, barHeight, color);
         }
     }
 }

languages/pineapple-music_en.ts

@@ -12,82 +12,113 @@
 <context>
     <name>MainWindow</name>
     <message>
-        <location filename="../mainwindow.cpp" line="93"/>
+        <location filename="../mainwindow.cpp" line="125"/>
         <source>Mono</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="95"/>
+        <location filename="../mainwindow.cpp" line="127"/>
         <source>Stereo</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="97"/>
+        <location filename="../mainwindow.cpp" line="129"/>
         <source>%1 Channels</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="241"/>
+        <location filename="../mainwindow.cpp" line="298"/>
         <source>Select songs to play</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="243"/>
+        <location filename="../mainwindow.cpp" line="300"/>
         <source>Audio Files</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="576"/>
+        <location filename="../mainwindow.cpp" line="685"/>
         <source>Select image as background skin</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="578"/>
+        <location filename="../mainwindow.cpp" line="687"/>
         <source>Image files (*.jpg *.jpeg *.png *.gif)</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="764"/>
+        <source>Based on the following free software libraries:</source>
+        <translation type="unfinished"></translation>
+    </message>
     <message>
         <location filename="../mainwindow.ui" line="23"/>
+        <location filename="../mainwindow.cpp" line="762"/>
         <location filename="../lrcbar.cpp" line="89"/>
         <source>Pineapple Music</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.ui" line="313"/>
+        <location filename="../mainwindow.ui" line="327"/>
         <source>No song loaded...</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.ui" line="325"/>
+        <location filename="../mainwindow.ui" line="339"/>
         <source>Drag and drop file to load</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.ui" line="338"/>
+        <location filename="../mainwindow.ui" line="352"/>
         <source>Lrc</source>
         <comment>Lyrics</comment>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="103"/>
+        <location filename="../mainwindow.ui" line="711"/>
+        <location filename="../mainwindow.ui" line="714"/>
+        <location filename="../mainwindow.cpp" line="759"/>
+        <source>About</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.ui" line="728"/>
+        <source>Open</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="135"/>
         <source>Sample Rate: %1 Hz</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="108"/>
+        <location filename="../mainwindow.cpp" line="140"/>
         <source>Bitrate: %1 Kbps</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="113"/>
+        <location filename="../mainwindow.cpp" line="145"/>
         <source>Channel Count: %1</source>
         <translation type="unfinished"></translation>
     </message>
 </context>
+<context>
+    <name>PlaybackProgressIndicator</name>
+    <message>
+        <location filename="../playbackprogressindicator.cpp" line="85"/>
+        <source>Time</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="../playbackprogressindicator.cpp" line="85"/>
+        <source>Chapter Name</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
 <context>
     <name>main</name>
     <message>
-        <location filename="../main.cpp" line="28"/>
+        <location filename="../main.cpp" line="27"/>
         <source>File list.</source>
         <translation type="unfinished"></translation>
     </message>

languages/pineapple-music_zh_CN.ts

@@ -12,82 +12,113 @@
 <context>
     <name>MainWindow</name>
     <message>
-        <location filename="../mainwindow.cpp" line="93"/>
+        <location filename="../mainwindow.cpp" line="125"/>
         <source>Mono</source>
         <translation>单声道</translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="95"/>
+        <location filename="../mainwindow.cpp" line="127"/>
         <source>Stereo</source>
         <translation>立体声</translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="97"/>
+        <location filename="../mainwindow.cpp" line="129"/>
         <source>%1 Channels</source>
         <translation>%1 声道</translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="241"/>
+        <location filename="../mainwindow.cpp" line="298"/>
         <source>Select songs to play</source>
         <translation>选择要播放的曲目</translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="243"/>
+        <location filename="../mainwindow.cpp" line="300"/>
         <source>Audio Files</source>
         <translation>音频文件</translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="576"/>
+        <location filename="../mainwindow.cpp" line="685"/>
         <source>Select image as background skin</source>
         <translation>选择图片作为背景皮肤</translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="578"/>
+        <location filename="../mainwindow.cpp" line="687"/>
         <source>Image files (*.jpg *.jpeg *.png *.gif)</source>
         <translation>图片文件 (*.jpg *.jpeg *.png *.gif)</translation>
     </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="764"/>
+        <source>Based on the following free software libraries:</source>
+        <translation>基于下列自由软件库：</translation>
+    </message>
     <message>
         <location filename="../mainwindow.ui" line="23"/>
+        <location filename="../mainwindow.cpp" line="762"/>
         <location filename="../lrcbar.cpp" line="89"/>
         <source>Pineapple Music</source>
         <translation>菠萝音乐</translation>
     </message>
     <message>
-        <location filename="../mainwindow.ui" line="313"/>
+        <location filename="../mainwindow.ui" line="327"/>
         <source>No song loaded...</source>
         <translation>未加载曲目...</translation>
     </message>
     <message>
-        <location filename="../mainwindow.ui" line="325"/>
+        <location filename="../mainwindow.ui" line="339"/>
         <source>Drag and drop file to load</source>
         <translation>拖放文件来播放</translation>
     </message>
     <message>
-        <location filename="../mainwindow.ui" line="338"/>
+        <location filename="../mainwindow.ui" line="352"/>
         <source>Lrc</source>
         <comment>Lyrics</comment>
         <translation>歌词</translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="103"/>
+        <location filename="../mainwindow.ui" line="711"/>
+        <location filename="../mainwindow.ui" line="714"/>
+        <location filename="../mainwindow.cpp" line="759"/>
+        <source>About</source>
+        <translation>关于</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.ui" line="728"/>
+        <source>Open</source>
+        <translation>打开</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="135"/>
         <source>Sample Rate: %1 Hz</source>
         <translation>采样率: %1 Hz</translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="108"/>
+        <location filename="../mainwindow.cpp" line="140"/>
         <source>Bitrate: %1 Kbps</source>
         <translation>比特率: %1 Kbps</translation>
     </message>
     <message>
-        <location filename="../mainwindow.cpp" line="113"/>
+        <location filename="../mainwindow.cpp" line="145"/>
         <source>Channel Count: %1</source>
         <translation>声道数: %1</translation>
     </message>
 </context>
+<context>
+    <name>PlaybackProgressIndicator</name>
+    <message>
+        <location filename="../playbackprogressindicator.cpp" line="85"/>
+        <source>Time</source>
+        <translation>时间</translation>
+    </message>
+    <message>
+        <location filename="../playbackprogressindicator.cpp" line="85"/>
+        <source>Chapter Name</source>
+        <translation>章节名称</translation>
+    </message>
+</context>
 <context>
     <name>main</name>
     <message>
-        <location filename="../main.cpp" line="28"/>
+        <location filename="../main.cpp" line="27"/>
         <source>File list.</source>
         <translation>文件列表。</translation>
     </message>

mainwindow.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2024 Gary Wang <git@blumia.net>
+// SPDX-FileCopyrightText: 2025 Gary Wang <opensource@blumia.net>
 //
 // SPDX-License-Identifier: MIT
 
@@ -8,6 +8,7 @@
 #include "playlistmanager.h"
 #include "fftspectrum.h"
 #include "lrcbar.h"
+#include "taskbarmanager.h"
 
 // taglib
 #ifndef NO_TAGLIB
@@ -26,6 +27,7 @@
 #include <QListView>
 #include <QCollator>
 #include <QMimeData>
+#include <QMenu>
 #include <QWindow>
 #include <QStandardPaths>
 #include <QMediaDevices>
@@ -34,6 +36,7 @@
 #include <QStringBuilder>
 #include <QSettings>
 #include <QGraphicsDropShadowEffect>
+#include <QTimer>
 
 constexpr QSize miniSize(490, 160);
 constexpr QSize fullSize(490, 420);
@@ -47,6 +50,7 @@ MainWindow::MainWindow(QWidget *parent)
     , m_fftSpectrum(new FFTSpectrum(this))
     , m_lrcbar(new LrcBar(nullptr))
     , m_playlistManager(new PlaylistManager(this))
+    , m_taskbarManager(new TaskBarManager(this))
 {
     ui->setupUi(this);
     m_playlistManager->setAutoLoadFilterSuffixes({
@@ -57,6 +61,10 @@ MainWindow::MainWindow(QWidget *parent)
     m_mediaPlayer->setLoops(QMediaPlayer::Infinite);
     ui->playlistView->setModel(m_playlistManager->model());
 
+    ui->chapterNameBtn->setVisible(false);
+    ui->chapterlistView->setModel(ui->playbackProgressIndicator->chapterModel());
+    ui->chapterlistView->setRootIsDecorated(false);
+
     ui->actionHelp->setShortcut(QKeySequence::HelpContents);
     addAction(ui->actionHelp);
     ui->actionOpen->setShortcut(QKeySequence::Open);
@@ -70,12 +78,21 @@ MainWindow::MainWindow(QWidget *parent)
     setWindowFlags(Qt::FramelessWindowHint | Qt::WindowSystemMenuHint | Qt::WindowMinimizeButtonHint);
     setAttribute(Qt::WA_TranslucentBackground, true);
 
+    m_taskbarManager->setCanTogglePlayback(true);
+    m_taskbarManager->setCanSkipBackward(true);
+    m_taskbarManager->setCanSkipForward(true);
+    m_taskbarManager->setShowProgress(true);
+
     loadConfig();
     loadSkinData();
     initConnections();
     initUiAndAnimation();
 
     centerWindow();
+
+    QTimer::singleShot(1000, [this](){
+        m_taskbarManager->setWinId(window()->winId());
+    });
 }
 
 MainWindow::~MainWindow()
@@ -114,12 +131,12 @@ void MainWindow::setAudioPropertyInfoForDisplay(int sampleRate, int bitrate, int
         }
     };
 
-    if (sampleRate >= 0) {
+    if (sampleRate > 0) {
         uiStrs << QString("%1 Hz").arg(sampleRate);
         tooltipStrs << tr("Sample Rate: %1 Hz").arg(sampleRate);
     }
 
-    if (bitrate >= 0) {
+    if (bitrate > 0) {
         uiStrs << QString("%1 Kbps").arg(bitrate);
         tooltipStrs << tr("Bitrate: %1 Kbps").arg(bitrate);
     }
@@ -248,6 +265,15 @@ void MainWindow::dropEvent(QDropEvent *e)
         return;
     }
 
+    if (fileName.endsWith(".m3u") || fileName.endsWith(".m3u8")) {
+        const QModelIndex & modelIndex = m_playlistManager->loadM3U8Playlist(urls.constFirst());
+        if (modelIndex.isValid()) {
+            loadByModelIndex(modelIndex);
+            play();
+        }
+        return;
+    }
+
     const QModelIndex & modelIndex = m_playlistManager->loadPlaylist(urls);
     if (modelIndex.isValid()) {
         loadByModelIndex(modelIndex);
@@ -255,6 +281,16 @@ void MainWindow::dropEvent(QDropEvent *e)
     }
 }
 
+void MainWindow::contextMenuEvent(QContextMenuEvent *event)
+{
+    QMenu * menu = new QMenu;
+    menu->addAction(ui->actionHelp);
+    menu->exec(mapToGlobal(event->pos()));
+    menu->deleteLater();
+
+    return QMainWindow::contextMenuEvent(event);
+}
+
 void MainWindow::loadFile()
 {
     QStringList musicFolders(QStandardPaths::standardLocations(QStandardPaths::MusicLocation));
@@ -269,22 +305,22 @@ void MainWindow::loadFile()
         urlList.append(QUrl::fromLocalFile(fileName));
     }
 
-    m_playlistManager->loadPlaylist(urlList);
+    const QModelIndex & modelIndex = m_playlistManager->loadPlaylist(urlList);
-    const QUrl & firstUrl = urlList.first();
+    loadByModelIndex(modelIndex);
-    const QString firstFilePath = firstUrl.toLocalFile();
+}
-    m_mediaPlayer->setSource(firstUrl);
+
-    m_lrcbar->loadLyrics(firstFilePath);
+void MainWindow::loadFile(const QUrl &url)
-    QList<std::pair<qint64, QString>> chapters(PlaybackProgressIndicator::tryLoadSidecarChapterFile(firstFilePath));
+{
+    const QString filePath = url.toLocalFile();
+    m_mediaPlayer->setSource(url);
+    m_lrcbar->loadLyrics(filePath);
+    QList<std::pair<qint64, QString>> chapters(PlaybackProgressIndicator::tryLoadChapters(filePath));
     ui->playbackProgressIndicator->setChapters(chapters);
 }
 
 void MainWindow::loadByModelIndex(const QModelIndex & index)
 {
-    m_mediaPlayer->setSource(m_playlistManager->urlByIndex(index));
+    loadFile(m_playlistManager->urlByIndex(index));
-    QString filePath(m_playlistManager->localFileByIndex(index));
-    m_lrcbar->loadLyrics(filePath);
-    QList<std::pair<qint64, QString>> chapters(PlaybackProgressIndicator::tryLoadSidecarChapterFile(filePath));
-    ui->playbackProgressIndicator->setChapters(chapters);
 }
 
 void MainWindow::play()
@@ -336,16 +372,6 @@ void MainWindow::on_playBtn_clicked()
     }
 }
 
-QString MainWindow::ms2str(qint64 ms)
-{
-    QTime duaTime(QTime::fromMSecsSinceStartOfDay(ms));
-    if (duaTime.hour() > 0) {
-        return duaTime.toString("h:mm:ss");
-    } else {
-        return duaTime.toString("m:ss");
-    }
-}
-
 QList<QUrl> MainWindow::strlst2urllst(QStringList strlst)
 {
     QList<QUrl> urlList;
@@ -440,6 +466,8 @@ void MainWindow::initConnections()
             if (!fileRef.isNull() && fileRef.audioProperties()) {
                 TagLib::AudioProperties *prop = fileRef.audioProperties();
                 setAudioPropertyInfoForDisplay(prop->sampleRate(), prop->bitrate(), prop->channels(), suffix);
+            } else {
+                qDebug() << "No Audio Properties from TagLib";
             }
 
             if (!fileRef.isNull() && fileRef.tag()) {
@@ -447,6 +475,10 @@ void MainWindow::initConnections()
                 setAudioMetadataForDisplay(QString::fromStdString(tag->title().to8Bit(true)),
                                            QString::fromStdString(tag->artist().to8Bit(true)),
                                            QString::fromStdString(tag->album().to8Bit(true)));
+                m_urlMissingTagLibMetadata.clear();
+            } else {
+                qDebug() << "No Audio Metadata from TagLib";
+                m_urlMissingTagLibMetadata = fileUrl;
             }
 #endif // NO_TAGLIB
         }
@@ -458,12 +490,17 @@ void MainWindow::initConnections()
         // see `02  Yoiyami Hanabi.mp3`'s Title. So we don't use Qt's one if tablib is available.
         qDebug() << metadata.stringValue(QMediaMetaData::Title) << metadata.stringValue(QMediaMetaData::Author);
 #ifdef NO_TAGLIB
-        setAudioMetadataForDisplay(metadata.stringValue(QMediaMetaData::Title),
+        bool needMetadataFromQt = true;
-                                   metadata.stringValue(QMediaMetaData::Author),
+#else
-                                   metadata.stringValue(QMediaMetaData::AlbumTitle));
+        bool needMetadataFromQt = m_urlMissingTagLibMetadata == m_mediaPlayer->source();
-        setAudioPropertyInfoForDisplay(-1, metadata.value(QMediaMetaData::AudioBitRate).toInt() / 1000,
-                                       -1, metadata.stringValue(QMediaMetaData::FileFormat));
 #endif // NO_TAGLIB
+        if (needMetadataFromQt) {
+            setAudioMetadataForDisplay(metadata.stringValue(QMediaMetaData::Title),
+                                       metadata.stringValue(QMediaMetaData::Author),
+                                       metadata.stringValue(QMediaMetaData::AlbumTitle));
+            setAudioPropertyInfoForDisplay(-1, metadata.value(QMediaMetaData::AudioBitRate).toInt() / 1000,
+                                           -1, metadata.stringValue(QMediaMetaData::FileFormat));
+        }
         QVariant coverArt(metadata.value(QMediaMetaData::ThumbnailImage));
         if (!coverArt.isNull()) {
             ui->coverLabel->setPixmap(QPixmap::fromImage(coverArt.value<QImage>()));
@@ -477,11 +514,28 @@ void MainWindow::initConnections()
     });
 
     connect(m_mediaPlayer, &QMediaPlayer::positionChanged, this, [=](qint64 pos) {
-        ui->nowTimeLabel->setText(ms2str(pos));
+        ui->nowTimeLabel->setText(PlaybackProgressIndicator::formatTime(pos));
         if (m_mediaPlayer->duration() != 0) {
             ui->playbackProgressIndicator->setPosition(pos);
+            m_taskbarManager->setProgressValue(pos);
         }
         m_lrcbar->playbackPositionChanged(pos, m_mediaPlayer->duration());
+
+        static QString lastChapterName;
+        if (ui->playbackProgressIndicator->chapterModel()->rowCount() > 0) {
+            QString currentChapterName = ui->playbackProgressIndicator->currentChapterName();
+            if (currentChapterName != lastChapterName) {
+                ui->chapterNameBtn->setText(currentChapterName);
+                lastChapterName = currentChapterName;
+            }
+            ui->chapterNameBtn->setVisible(true);
+        } else {
+            if (!lastChapterName.isEmpty()) {
+                ui->chapterNameBtn->setText("");
+                lastChapterName.clear();
+            }
+            ui->chapterNameBtn->setVisible(false);
+        }
     });
 
     connect(m_audioOutput, &QAudioOutput::mutedChanged, this, [=](bool muted) {
@@ -494,7 +548,8 @@ void MainWindow::initConnections()
 
     connect(m_mediaPlayer, &QMediaPlayer::durationChanged, this, [=](qint64 dua) {
         ui->playbackProgressIndicator->setDuration(dua);
-        ui->totalTimeLabel->setText(ms2str(dua));
+        m_taskbarManager->setProgressMaximum(dua);
+        ui->totalTimeLabel->setText(PlaybackProgressIndicator::formatTime(dua));
     });
 
     connect(m_mediaPlayer, &QMediaPlayer::playbackStateChanged, this, [=](QMediaPlayer::PlaybackState newState) {
@@ -507,6 +562,7 @@ void MainWindow::initConnections()
             ui->playBtn->setIcon(QIcon(":/icons/icons/media-playback-start.png"));
             break;
         }
+        m_taskbarManager->setPlaybackState(newState);
     });
 
     connect(m_audioOutput, &QAudioOutput::volumeChanged, this, [=](float vol) {
@@ -547,9 +603,21 @@ void MainWindow::initConnections()
         }
     });
 
-   connect(m_mediaPlayer, &QMediaPlayer::errorOccurred, this, [=](QMediaPlayer::Error error, const QString &errorString) {
+    connect(m_taskbarManager, &TaskBarManager::togglePlayback, this, [this](){
+        on_playBtn_clicked();
+    });
+
+    connect(m_taskbarManager, &TaskBarManager::skipBackward, this, [this](){
+        on_prevBtn_clicked();
+    });
+
+    connect(m_taskbarManager, &TaskBarManager::skipForward, this, [this](){
+        on_nextBtn_clicked();
+    });
+
+    connect(m_mediaPlayer, &QMediaPlayer::errorOccurred, this, [=](QMediaPlayer::Error error, const QString &errorString) {
         qDebug() << error << errorString;
-   });
+    });
 }
 
 void MainWindow::loadConfig()
@@ -629,7 +697,16 @@ void MainWindow::on_setSkinBtn_clicked()
 
 void MainWindow::on_playListBtn_clicked()
 {
-    setFixedSize(size().height() < 200 ? fullSize : miniSize);
+    if (size().height() < 200) {
+        setFixedSize(fullSize);
+        ui->pluginStackedWidget->setCurrentWidget(ui->playlistViewPage);
+    } else {
+        if (ui->pluginStackedWidget->currentWidget() == ui->playlistViewPage) {
+            setFixedSize(miniSize);
+        } else {
+            ui->pluginStackedWidget->setCurrentWidget(ui->playlistViewPage);
+        }
+    }
 }
 
 void MainWindow::on_playlistView_activated(const QModelIndex &index)
@@ -648,6 +725,33 @@ void MainWindow::on_lrcBtn_clicked()
     }
 }
 
+void MainWindow::on_chapterlistView_activated(const QModelIndex &index)
+{
+    if (!index.isValid()) return;
+
+    QModelIndex timeColumnIndex = index.sibling(index.row(), 0);
+    QStandardItem* timeItem = ui->playbackProgressIndicator->chapterModel()->itemFromIndex(timeColumnIndex);
+    if (!timeItem) return;
+
+    qint64 chapterStartTime = timeItem->data(PlaybackProgressIndicator::StartTimeMsRole).toLongLong();
+    m_mediaPlayer->setPosition(chapterStartTime);
+}
+
+void MainWindow::on_chapterNameBtn_clicked()
+{
+    if (size().height() < 200) {
+        setFixedSize(fullSize);
+    }
+    ui->pluginStackedWidget->setCurrentWidget(ui->chaptersViewPage);
+    if (ui->playbackProgressIndicator->chapterModel()->rowCount() > 0) {
+        const QModelIndex & curChapterItem = ui->playbackProgressIndicator->currentChapterItem();
+        if (curChapterItem.isValid()) {
+            ui->chapterlistView->setCurrentIndex(curChapterItem);
+            ui->chapterlistView->scrollTo(curChapterItem, QAbstractItemView::EnsureVisible);
+        }
+    }
+}
+
 void MainWindow::on_actionOpen_triggered()
 {
     loadFile();
@@ -675,6 +779,9 @@ void MainWindow::on_actionHelp_triggered()
 #ifdef HAVE_KCODECS
         QStringLiteral("- [KCodecs](https://invent.kde.org/frameworks/kcodecs)\n") %
 #endif // NO_TAGLIB
+#ifdef HAVE_FFMPEG
+        QStringLiteral("- [FFmpeg](https://ffmpeg.org/)\n") %
+#endif // HAVE_FFMPEG
         "\n"
         "[Source Code](https://github.com/BLumia/pineapple-music)\n"
         "\n"
@@ -692,4 +799,3 @@ QGraphicsDropShadowEffect *MainWindow::createLabelShadowEffect()
     effect->setOffset(1, 1);
     return effect;
 }
-

mainwindow.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2024 Gary Wang <git@blumia.net>
+// SPDX-FileCopyrightText: 2025 Gary Wang <opensource@blumia.net>
 //
 // SPDX-License-Identifier: MIT
 
@@ -7,6 +7,7 @@
 
 #include <QMainWindow>
 #include <QVariant>
+#include <QUrl>
 
 QT_BEGIN_NAMESPACE
 namespace Ui { class MainWindow; }
@@ -21,6 +22,7 @@ QT_END_NAMESPACE
 class FFTSpectrum;
 class LrcBar;
 class PlaylistManager;
+class TaskBarManager;
 class MainWindow : public QMainWindow
 {
     Q_OBJECT
@@ -53,8 +55,10 @@ protected:
     void mouseReleaseEvent(QMouseEvent *event) override;
     void dragEnterEvent(QDragEnterEvent *e) override;
     void dropEvent(QDropEvent *e) override;
+    void contextMenuEvent(QContextMenuEvent *event) override;
 
     void loadFile();
+    void loadFile(const QUrl &url);
     void loadByModelIndex(const QModelIndex &index);
     void play();
 
@@ -76,6 +80,8 @@ private slots:
     void on_playListBtn_clicked();
     void on_playlistView_activated(const QModelIndex &index);
     void on_lrcBtn_clicked();
+    void on_chapterlistView_activated(const QModelIndex &index);
+    void on_chapterNameBtn_clicked();
     void on_actionOpen_triggered();
     void on_actionHelp_triggered();
 
@@ -89,6 +95,7 @@ private:
     bool m_playbackSliderPressed = false;
     QLinearGradient m_bgLinearGradient;
     QPixmap m_skin;
+    QUrl m_urlMissingTagLibMetadata;
     enum PlaybackMode m_playbackMode = CurrentItemInLoop;
 
     Ui::MainWindow *ui;
@@ -100,6 +107,7 @@ private:
     LrcBar *m_lrcbar;
     QPropertyAnimation *m_fadeOutAnimation;
     PlaylistManager *m_playlistManager;
+    TaskBarManager *m_taskbarManager;
 
     void initUiAndAnimation();
     void initConnections();

mainwindow.ui

@@ -109,6 +109,18 @@ QLabel#coverLabel {
 QListView {
 	color: white;
 	background: rgba(0, 0, 0, 50);
+}
+
+/****** TreeView ******/
+
+QTreeView {
+	color: white;
+	background: rgba(0, 0, 0, 50);
+}
+
+QHeaderView {
+	color: white;
+	background-color: rgba(200, 200, 200, 50);
 }</string>
   </property>
   <property name="locale">
@@ -217,7 +229,7 @@ QListView {
            <item>
             <spacer name="horizontalSpacer">
              <property name="orientation">
-              <enum>Qt::Orientation::Horizontal</enum>
+              <enum>Qt::Horizontal</enum>
              </property>
              <property name="sizeHint" stdset="0">
               <size>
@@ -295,7 +307,7 @@ QListView {
          <item>
           <layout class="QVBoxLayout" name="playerPanelLayout">
            <property name="sizeConstraint">
-            <enum>QLayout::SizeConstraint::SetDefaultConstraint</enum>
+            <enum>QLayout::SetDefaultConstraint</enum>
            </property>
            <property name="rightMargin">
             <number>10</number>
@@ -358,13 +370,26 @@ QListView {
                </property>
               </widget>
              </item>
+             <item>
+              <widget class="QPushButton" name="chapterNameBtn">
+               <property name="sizePolicy">
+                <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+                 <horstretch>0</horstretch>
+                 <verstretch>0</verstretch>
+                </sizepolicy>
+               </property>
+               <property name="text">
+                <string/>
+               </property>
+              </widget>
+             </item>
              <item>
               <widget class="QLabel" name="totalTimeLabel">
                <property name="text">
                 <string notr="true">0:00</string>
                </property>
                <property name="alignment">
-                <set>Qt::AlignmentFlag::AlignRight|Qt::AlignmentFlag::AlignTrailing|Qt::AlignmentFlag::AlignVCenter</set>
+                <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
                </property>
               </widget>
              </item>
@@ -599,7 +624,7 @@ QListView {
                 <number>100</number>
                </property>
                <property name="orientation">
-                <enum>Qt::Orientation::Horizontal</enum>
+                <enum>Qt::Horizontal</enum>
                </property>
               </widget>
              </item>
@@ -626,7 +651,10 @@ QListView {
         <height>0</height>
        </size>
       </property>
-      <widget class="QWidget" name="pluginStackedWidgetPage1">
+      <property name="currentIndex">
+       <number>1</number>
+      </property>
+      <widget class="QWidget" name="playlistViewPage">
        <layout class="QVBoxLayout" name="verticalLayout_2">
         <property name="spacing">
          <number>0</number>
@@ -648,22 +676,48 @@ QListView {
         </item>
        </layout>
       </widget>
+      <widget class="QWidget" name="chaptersViewPage">
+       <layout class="QVBoxLayout" name="verticalLayout_3">
+        <property name="leftMargin">
+         <number>4</number>
+        </property>
+        <property name="topMargin">
+         <number>0</number>
+        </property>
+        <property name="rightMargin">
+         <number>4</number>
+        </property>
+        <property name="bottomMargin">
+         <number>4</number>
+        </property>
+        <item>
+         <widget class="QTreeView" name="chapterlistView">
+          <property name="editTriggers">
+           <set>QAbstractItemView::NoEditTriggers</set>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </widget>
      </widget>
     </item>
    </layout>
   </widget>
   <action name="actionHelp">
+   <property name="icon">
+    <iconset theme="system-help"/>
+   </property>
    <property name="text">
-    <string>Help</string>
+    <string>About</string>
    </property>
    <property name="toolTip">
-    <string>Help</string>
+    <string>About</string>
    </property>
    <property name="shortcut">
-    <string>F1</string>
+    <string notr="true">F1</string>
    </property>
    <property name="menuRole">
-    <enum>QAction::MenuRole::NoRole</enum>
+    <enum>QAction::AboutRole</enum>
    </property>
   </action>
   <action name="actionOpen">
@@ -674,10 +728,10 @@ QListView {
     <string>Open</string>
    </property>
    <property name="shortcut">
-    <string>Ctrl+O</string>
+    <string notr="true">Ctrl+O</string>
    </property>
    <property name="menuRole">
-    <enum>QAction::MenuRole::NoRole</enum>
+    <enum>QAction::NoRole</enum>
    </property>
   </action>
  </widget>

playbackprogressindicator.cpp

@@ -11,11 +11,51 @@
 #include <QPainterPath>
 #include <QRegularExpression>
 
+#ifdef HAVE_FFMPEG
+extern "C" {
+#include <libavformat/avformat.h>
+#include <libavutil/avutil.h>
+#include <libavutil/dict.h>
+#include <libavutil/time.h> // Contains AV_TIME_BASE and AV_TIME_BASE_Q
+} // extern "C"
+#endif // HAVE_FFMPEG
+
 PlaybackProgressIndicator::PlaybackProgressIndicator(QWidget *parent) :
     QWidget(parent)
 {
 }
 
+QModelIndex PlaybackProgressIndicator::currentChapterItem() const
+{
+    int currentChapterIndex = -1;
+
+    for (int i = 0; i < m_chapterModel.rowCount(); i++) {
+        QStandardItem* timeItem = m_chapterModel.item(i, 0);
+        qint64 chapterStartTime = timeItem->data(PlaybackProgressIndicator::StartTimeMsRole).toLongLong();
+
+        if (m_position >= chapterStartTime) {
+            currentChapterIndex = i;
+        } else {
+            break;
+        }
+    }
+
+    if (currentChapterIndex >= 0) {
+        return m_chapterModel.index(currentChapterIndex, 0);
+    }
+
+    return {};
+}
+
+QString PlaybackProgressIndicator::currentChapterName() const
+{
+    const QModelIndex timeIndex(currentChapterItem());
+    if (timeIndex.isValid()) {
+        return m_chapterModel.item(timeIndex.row(), 1)->text();
+    }
+    return {};
+}
+
 void PlaybackProgressIndicator::setPosition(qint64 pos)
 {
     m_position = pos;
@@ -28,17 +68,47 @@ void PlaybackProgressIndicator::setDuration(qint64 dur)
     emit durationChanged(m_duration);
 }
 
+QString PlaybackProgressIndicator::formatTime(qint64 milliseconds)
+{
+    QTime duaTime(QTime::fromMSecsSinceStartOfDay(milliseconds));
+    if (duaTime.hour() > 0) {
+        return duaTime.toString("h:mm:ss");
+    } else {
+        return duaTime.toString("m:ss");
+    }
+}
+
 void PlaybackProgressIndicator::setChapters(QList<std::pair<qint64, QString> > chapters)
 {
     m_chapterModel.clear();
+
+    m_chapterModel.setHorizontalHeaderLabels(QStringList() << tr("Time") << tr("Chapter Name"));
+
     for (const std::pair<qint64, QString> & chapter : chapters) {
+        QList<QStandardItem*> row;
+
+        QStandardItem * timeItem = new QStandardItem(formatTime(chapter.first));
+        timeItem->setData(chapter.first, StartTimeMsRole);
+        row.append(timeItem);
+
         QStandardItem * chapterItem = new QStandardItem(chapter.second);
         chapterItem->setData(chapter.first, StartTimeMsRole);
-        m_chapterModel.appendRow(chapterItem);
+        row.append(chapterItem);
+
+        m_chapterModel.appendRow(row);
     }
     update();
 }
 
+QList<std::pair<qint64, QString> > PlaybackProgressIndicator::tryLoadChapters(const QString &filePath)
+{
+    auto chapters = tryLoadSidecarChapterFile(filePath);
+    if (chapters.size() == 0) {
+        chapters = tryLoadChaptersFromMetadata(filePath);
+    }
+    return chapters;
+}
+
 QList<std::pair<qint64, QString> > PlaybackProgressIndicator::tryLoadSidecarChapterFile(const QString &filePath)
 {
     if (filePath.endsWith(".chp", Qt::CaseInsensitive)) {
@@ -63,6 +133,98 @@ QList<std::pair<qint64, QString> > PlaybackProgressIndicator::tryLoadSidecarChap
     return {};
 }
 
+#ifdef HAVE_FFMPEG
+
+// Helper function to convert FFmpeg time (in time_base units) to milliseconds
+qint64 convertTimestampToMilliseconds(int64_t timestamp, AVRational time_base) {
+    // Convert to seconds first, then to milliseconds and cast to qint64
+    return static_cast<qint64>((double)timestamp * av_q2d(time_base) * 1000.0);
+}
+
+// Helper function to print FFmpeg errors
+void printFFmpegError(int errnum) {
+    char errbuf[AV_ERROR_MAX_STRING_SIZE];
+    av_strerror(errnum, errbuf, sizeof(errbuf));
+    qCritical() << "FFmpeg error:" << errbuf;
+}
+
+#endif // HAVE_FFMPEG
+
+QList<std::pair<qint64, QString> > PlaybackProgressIndicator::tryLoadChaptersFromMetadata(const QString &filePath)
+{
+#ifdef HAVE_FFMPEG
+    if (!QFile::exists(filePath)) {
+        qCritical() << "Error: File not found" << filePath;
+        return {};
+    }
+
+    AVFormatContext* format_ctx = nullptr; // FFmpeg format context
+    int ret = 0; // Return value for FFmpeg functions
+
+    qInfo() << "Attempting to open file:" << filePath;
+
+    // Open the input file and read the header.
+    // The last two arguments (AVInputFormat*, AVDictionary**) are optional.
+    // Passing nullptr for them means FFmpeg will try to guess the format
+    // and no options will be passed to the demuxer.
+    ret = avformat_open_input(&format_ctx, filePath.toUtf8().constData(), nullptr, nullptr);
+    if (ret < 0) {
+        qCritical() << "Could not open input file:" << filePath;
+        printFFmpegError(ret);
+        return {};
+    }
+    qInfo() << "File opened successfully.";
+
+    // Read stream information from the file.
+    // This populates format_ctx->streams and other metadata, including chapters.
+    ret = avformat_find_stream_info(format_ctx, nullptr);
+    if (ret < 0) {
+        qCritical() << "Could not find stream information for file:" << filePath;
+        printFFmpegError(ret);
+        avformat_close_input(&format_ctx); // Close the context before returning
+        return {};
+    }
+    qInfo() << "Stream information found.";
+
+    QList<std::pair<qint64, QString>> chapterList;
+
+    // Check if there are any chapters
+    if (format_ctx->nb_chapters == 0) {
+        qInfo() << "No chapters found in file:" << filePath;
+    } else {
+        qInfo() << "Found" << format_ctx->nb_chapters << "chapters.";
+        // Iterate through each chapter
+        for (unsigned int i = 0; i < format_ctx->nb_chapters; ++i) {
+            AVChapter* chapter = format_ctx->chapters[i];
+
+            // Chapter timestamps are typically in AV_TIME_BASE units by default
+            // unless the chapter itself has a specific time_base.
+            // For simplicity and common cases, we use AV_TIME_BASE_Q.
+            qint64 start_ms = convertTimestampToMilliseconds(chapter->start, chapter->time_base);
+
+            // Get the chapter title from its metadata.
+            // av_dict_get(dictionary, key, prev, flags)
+            // prev is used for iterating through multiple entries with the same key,
+            // we want the first one so we pass nullptr. flags=0 for case-insensitive.
+            AVDictionaryEntry* title_tag = av_dict_get(chapter->metadata, "title", nullptr, 0);
+            QString chapter_title = (title_tag && title_tag->value) ? QString::fromUtf8(title_tag->value) : "Untitled Chapter";
+
+            chapterList.append(std::make_pair(start_ms, chapter_title));
+        }
+    }
+
+    // Close the input file.
+    // This also frees the format_ctx and associated data.
+    avformat_close_input(&format_ctx);
+    qInfo() << "File closed.";
+
+    return chapterList;
+#else
+    qInfo() << "FFmpeg not found during build.";
+    return {};
+#endif // HAVE_FFMPEG
+}
+
 QList<std::pair<qint64, QString> > PlaybackProgressIndicator::parseCHPChapterFile(const QString &filePath)
 {
     QList<std::pair<qint64, QString>> chapters;

playbackprogressindicator.h

@@ -24,11 +24,18 @@ public:
     explicit PlaybackProgressIndicator(QWidget *parent = nullptr);
     ~PlaybackProgressIndicator() = default;
 
+    QStandardItemModel* chapterModel() { return &m_chapterModel; }
+    QModelIndex currentChapterItem() const;
+    QString currentChapterName() const;
+
     void setPosition(qint64 pos);
     void setDuration(qint64 dur);
     void setChapters(QList<std::pair<qint64, QString>> chapters);
 
+    static QString formatTime(qint64 milliseconds);
+    static QList<std::pair<qint64, QString>> tryLoadChapters(const QString & filePath);
     static QList<std::pair<qint64, QString>> tryLoadSidecarChapterFile(const QString & filePath);
+    static QList<std::pair<qint64, QString>> tryLoadChaptersFromMetadata(const QString & filePath);
     static QList<std::pair<qint64, QString>> parseCHPChapterFile(const QString & filePath);
     static QList<std::pair<qint64, QString>> parsePBFChapterFile(const QString & filePath);
 

playlistmanager.cpp

@@ -186,6 +186,26 @@ QModelIndex PlaylistManager::loadPlaylist(const QUrl &url)
     return idx;
 }
 
+QModelIndex PlaylistManager::loadM3U8Playlist(const QUrl &url)
+{
+    QFile file(url.toLocalFile());
+    if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        QList<QUrl> urls;
+        while (!file.atEnd()) {
+            QString line = file.readLine();
+            if (line.startsWith('#')) {
+                continue;
+            }
+            QFileInfo fileInfo(file);
+            QUrl item = QUrl::fromUserInput(line, fileInfo.absolutePath());
+            urls.append(item);
+        }
+        return loadPlaylist(urls);
+    } else {
+        return {};
+    }
+}
+
 int PlaylistManager::totalCount() const
 {
     return m_model.rowCount();
@@ -196,7 +216,7 @@ QModelIndex PlaylistManager::previousIndex() const
     int count = totalCount();
     if (count == 0) return {};
 
-    return m_model.index(m_currentIndex - 1 < 0 ? count - 1 : m_currentIndex - 1);
+    return m_model.index(isFirstIndex() ? count - 1 : m_currentIndex - 1);
 }
 
 QModelIndex PlaylistManager::nextIndex() const
@@ -204,7 +224,7 @@ QModelIndex PlaylistManager::nextIndex() const
     int count = totalCount();
     if (count == 0) return {};
 
-    return m_model.index(m_currentIndex + 1 == count ? 0 : m_currentIndex + 1);
+    return m_model.index(isLastIndex() ? 0 : m_currentIndex + 1);
 }
 
 QModelIndex PlaylistManager::curIndex() const
@@ -212,6 +232,16 @@ QModelIndex PlaylistManager::curIndex() const
     return m_model.index(m_currentIndex);
 }
 
+bool PlaylistManager::isFirstIndex() const
+{
+    return m_currentIndex == 0;
+}
+
+bool PlaylistManager::isLastIndex() const
+{
+    return m_currentIndex + 1 == totalCount();
+}
+
 void PlaylistManager::setCurrentIndex(const QModelIndex &index)
 {
     if (index.isValid() && index.row() >= 0 && index.row() < totalCount()) {

playlistmanager.h

@@ -61,11 +61,14 @@ public:
     void setPlaylist(const QList<QUrl> & url);
     Q_INVOKABLE QModelIndex loadPlaylist(const QList<QUrl> & urls);
     Q_INVOKABLE QModelIndex loadPlaylist(const QUrl & url);
+    Q_INVOKABLE QModelIndex loadM3U8Playlist(const QUrl & url);
 
     int totalCount() const;
     QModelIndex previousIndex() const;
     QModelIndex nextIndex() const;
     QModelIndex curIndex() const;
+    bool isFirstIndex() const;
+    bool isLastIndex() const;
     void setCurrentIndex(const QModelIndex & index);
     QUrl urlByIndex(const QModelIndex & index);
     QString localFileByIndex(const QModelIndex & index);

taskbarmanager.cpp

@@ -0,0 +1,383 @@
+// SPDX-FileCopyrightText: 2024 (c) Jack Hill <jackhill3103@gmail.com>
+// SPDX-FileCopyrightText: 2025 (c) Gary Wang <opensource@blumia.net>
+//
+// SPDX-License-Identifier: LGPL-3.0-or-later
+//
+// This file is modified based on Elisa's taskmanager.cpp implementation,
+// with its Qt Quick usage removed.
+
+#include "taskbarmanager.h"
+
+#include <QAbstractEventDispatcher>
+#include <QAbstractNativeEventFilter>
+#include <QDebug>
+
+#include <Shobjidl.h>
+#include <WinDef.h>
+#include <Windows.h>
+
+constexpr int numOfButtons = 3;
+
+#if QT_VERSION < QT_VERSION_CHECK(6, 7, 0)
+using namespace Qt::Literals::StringLiterals;
+
+static HICON hiconFromTheme(const QString &iconName)
+#else
+static HICON hiconFromTheme(const QIcon::ThemeIcon iconName)
+#endif
+{
+    const auto width = GetSystemMetrics(SM_CXSMICON);
+    const auto height = GetSystemMetrics(SM_CYSMICON);
+    return QIcon::fromTheme(iconName).pixmap(width, height).toImage().toHICON();
+}
+
+class TaskBarManagerPrivate
+{
+public:
+
+    ITaskbarList3 *taskBar = nullptr;
+    HWND hwnd = nullptr;
+
+    /**
+     * Whether the toolbar has been added to the taskbar
+     */
+    bool addedThumbButtons = false;
+
+    QMediaPlayer::PlaybackState playbackState = QMediaPlayer::StoppedState;
+
+    bool showProgress = false;
+    qlonglong progressMaximum = 0;
+    qlonglong progressValue = 0;
+
+#if QT_VERSION < QT_VERSION_CHECK(6, 7, 0)
+    HICON skipBackwardIcon = hiconFromTheme(u"media-skip-backward"_s);
+    HICON skipForwardIcon = hiconFromTheme(u"media-skip-forward"_s);
+    HICON playIcon = hiconFromTheme(u"media-playback-start"_s);
+    HICON pauseIcon = hiconFromTheme(u"media-playback-pause"_s);
+#else
+    HICON skipBackwardIcon = hiconFromTheme(QIcon::ThemeIcon::MediaSkipBackward);
+    HICON skipForwardIcon = hiconFromTheme(QIcon::ThemeIcon::MediaSkipForward);
+    HICON playIcon = hiconFromTheme(QIcon::ThemeIcon::MediaPlaybackStart);
+    HICON pauseIcon = hiconFromTheme(QIcon::ThemeIcon::MediaPlaybackPause);
+#endif
+
+    /**
+     * Contains the current state of each button
+     */
+    struct ButtonData {
+        HICON icon = nullptr;
+        bool enabled = false;
+    };
+    std::array<ButtonData, numOfButtons> buttonData = {{
+        {skipBackwardIcon, false},
+        {playIcon, false},
+        {skipForwardIcon, false}
+    }};
+
+    /**
+     * For convenience when reading code
+     */
+    enum ButtonID {
+        SkipBackward = 0,
+        TogglePlayback = 1,
+        SkipForward = 2,
+    };
+
+    TaskBarManagerPrivate()
+    {
+        HRESULT result = CoCreateInstance(CLSID_TaskbarList,
+                                          nullptr,
+                                          CLSCTX_INPROC_SERVER,
+                                          IID_PPV_ARGS(&taskBar));
+        if (FAILED(result)) {
+            taskBar = nullptr;
+            qWarning() << "Failed to create Windows taskbar instance";
+            return;
+        }
+    }
+
+    ~TaskBarManagerPrivate()
+    {
+        if (taskBar) {
+            taskBar->Release();
+        }
+        DestroyIcon(skipForwardIcon);
+        DestroyIcon(skipBackwardIcon);
+        DestroyIcon(pauseIcon);
+        DestroyIcon(playIcon);
+    }
+
+    /**
+     * Update the native window handle for the taskbar instance
+     */
+    void setHWND(HWND newHwnd)
+    {
+        if (hwnd == newHwnd) {
+            return;
+        }
+
+        hwnd = newHwnd;
+        addedThumbButtons = false;
+        if (hwnd) {
+            updateProgressFlags();
+            updateProgressValue();
+            setupTaskBarManagerButtons();
+        }
+    }
+
+    /**
+     * Update the taskbar progress flags
+     */
+    void updateProgressFlags()
+    {
+        if (taskBar && hwnd) {
+            taskBar->SetProgressState(hwnd, progressFlags());
+        }
+    }
+
+    /**
+     * Update the taskbar progress value, only if the taskbar is showing progress
+     */
+    void updateProgressValue()
+    {
+        if (taskBar && hwnd && showProgress && playbackState != QMediaPlayer::StoppedState) {
+            taskBar->SetProgressValue(hwnd, progressValue, progressMaximum);
+        }
+    }
+
+    /**
+     * Update the state of a single toolbutton
+     */
+    void updateButton(const ButtonID buttonId)
+    {
+        if (!taskBar || !hwnd || !addedThumbButtons) {
+            return;
+        }
+        THUMBBUTTON thumbButtons[1];
+        initThumbButton(thumbButtons, buttonId);
+        taskBar->ThumbBarUpdateButtons(hwnd, 1, thumbButtons);
+    }
+
+private:
+    /**
+     * Convert playbackState into windows taskbar flags
+     */
+    TBPFLAG progressFlags() const
+    {
+        if (!showProgress) {
+            return TBPF_NOPROGRESS;
+        }
+
+        switch (playbackState) {
+        case QMediaPlayer::StoppedState:
+            return TBPF_NOPROGRESS;
+        case QMediaPlayer::PlayingState:
+            return TBPF_NORMAL;
+        case QMediaPlayer::PausedState:
+            return TBPF_PAUSED;
+        default:
+            return TBPF_NOPROGRESS;
+        }
+    }
+
+    /**
+     * Initialize a single toolbutton
+     */
+    void initThumbButton(THUMBBUTTON *button, const ButtonID id)
+    {
+        button->dwMask = THB_ICON | THB_FLAGS;
+        button->iId = id;
+        button->hIcon = buttonData.at(id).icon;
+        button->dwFlags = buttonData.at(id).enabled ? THBF_ENABLED : THBF_DISABLED;
+    }
+
+    /**
+     * Initialize the toolbar
+     */
+    void setupTaskBarManagerButtons()
+    {
+        if (!taskBar || !hwnd || addedThumbButtons) {
+            return;
+        }
+
+        THUMBBUTTON thumbButtons[numOfButtons];
+        THUMBBUTTON *currButton = thumbButtons;
+        for (int i = 0; i < numOfButtons; ++i) {
+            initThumbButton(currButton++, static_cast<ButtonID>(i));
+        }
+
+        // win32 api reference says we should pass &thumbButtons but this doesn't compile
+        HRESULT result = taskBar->ThumbBarAddButtons(hwnd, numOfButtons, thumbButtons);
+        if (FAILED(result)) {
+            qWarning() << "Failed to create Windows taskbar buttons";
+        } else {
+            addedThumbButtons = true;
+        }
+    }
+};
+
+TaskBarManager::TaskBarManager(QObject *parent)
+    : QObject(parent)
+    , d(std::make_unique<TaskBarManagerPrivate>())
+{
+    QAbstractEventDispatcher::instance()->installNativeEventFilter(this);
+}
+
+TaskBarManager::~TaskBarManager() = default;
+
+bool TaskBarManager::nativeEventFilter(const QByteArray &eventType, void *message, qintptr *)
+{
+    if (eventType == "windows_generic_MSG") {
+        MSG *msg = static_cast<MSG *>(message);
+        if (msg->hwnd != d->hwnd || msg->message != WM_COMMAND || HIWORD(msg->wParam) != THBN_CLICKED) {
+            return false;
+        }
+
+        switch (LOWORD(msg->wParam)) {
+        case TaskBarManagerPrivate::SkipBackward:
+            Q_EMIT skipBackward();
+            return true;
+        case TaskBarManagerPrivate::TogglePlayback:
+            Q_EMIT togglePlayback();
+            return true;
+        case TaskBarManagerPrivate::SkipForward:
+            Q_EMIT skipForward();
+            return true;
+        }
+    }
+    return false;
+}
+
+QMediaPlayer::PlaybackState TaskBarManager::playbackState() const
+{
+    return d->playbackState;
+}
+
+bool TaskBarManager::showProgress() const
+{
+    return d->showProgress;
+}
+
+qulonglong TaskBarManager::progressMaximum() const
+{
+    return d->progressMaximum;
+}
+
+qulonglong TaskBarManager::progressValue() const
+{
+    return d->progressValue;
+}
+
+bool TaskBarManager::canSkipBackward() const
+{
+    return d->buttonData.at(TaskBarManagerPrivate::SkipBackward).enabled;
+}
+
+bool TaskBarManager::canSkipForward() const
+{
+    return d->buttonData.at(TaskBarManagerPrivate::SkipForward).enabled;
+}
+
+bool TaskBarManager::canTogglePlayback() const
+{
+    return d->buttonData.at(TaskBarManagerPrivate::TogglePlayback).enabled;
+}
+
+void TaskBarManager::setWinId(WId winId)
+{
+    d->setHWND(reinterpret_cast<HWND>(winId));
+}
+
+void TaskBarManager::setPlaybackState(const QMediaPlayer::PlaybackState newPlaybackState)
+{
+    if (d->playbackState == newPlaybackState) {
+        return;
+    }
+
+    d->playbackState = newPlaybackState;
+    Q_EMIT playbackStateChanged();
+
+    d->buttonData.at(TaskBarManagerPrivate::TogglePlayback).icon =
+        d->playbackState == QMediaPlayer::PlayingState ? d->pauseIcon : d->playIcon;
+    d->updateButton(TaskBarManagerPrivate::TogglePlayback);
+    d->updateProgressFlags();
+}
+
+void TaskBarManager::setShowProgress(const bool showProgress)
+{
+    if (d->showProgress == showProgress) {
+        return;
+    }
+
+    d->showProgress = showProgress;
+    Q_EMIT showProgressChanged();
+
+    d->updateProgressFlags();
+}
+
+void TaskBarManager::setProgressMaximum(const qlonglong newMaximum)
+{
+    if (d->progressMaximum == newMaximum) {
+        return;
+    }
+
+    d->progressMaximum = newMaximum;
+    Q_EMIT progressMaximumChanged();
+
+    if (d->progressValue > d->progressMaximum) {
+        d->progressValue = d->progressMaximum;
+        Q_EMIT progressValueChanged();
+    }
+
+    d->updateProgressValue();
+}
+
+void TaskBarManager::setProgressValue(const qlonglong newValue)
+{
+    if (d->progressValue == newValue) {
+        return;
+    }
+
+    d->progressValue = newValue < d->progressMaximum ? newValue : d->progressMaximum;
+    Q_EMIT progressValueChanged();
+
+    d->updateProgressValue();
+}
+
+void TaskBarManager::setCanSkipBackward(const bool canSkip)
+{
+    if (d->buttonData[TaskBarManagerPrivate::SkipBackward].enabled == canSkip) {
+        return;
+    }
+
+    d->buttonData[TaskBarManagerPrivate::SkipBackward].enabled = canSkip;
+    Q_EMIT canSkipBackwardChanged();
+
+    d->updateButton(TaskBarManagerPrivate::SkipBackward);
+}
+
+void TaskBarManager::setCanSkipForward(const bool canSkip)
+{
+    if (d->buttonData[TaskBarManagerPrivate::SkipForward].enabled == canSkip) {
+        return;
+    }
+
+    d->buttonData[TaskBarManagerPrivate::SkipForward].enabled = canSkip;
+    Q_EMIT canSkipForwardChanged();
+
+    d->updateButton(TaskBarManagerPrivate::SkipForward);
+}
+
+void TaskBarManager::setCanTogglePlayback(const bool canToggle)
+{
+    if (d->buttonData[TaskBarManagerPrivate::TogglePlayback].enabled == canToggle) {
+        return;
+    }
+
+    d->buttonData[TaskBarManagerPrivate::TogglePlayback].enabled = canToggle;
+    Q_EMIT canTogglePlaybackChanged();
+
+    d->updateButton(TaskBarManagerPrivate::TogglePlayback);
+}
+
+#include "moc_taskbarmanager.cpp"

taskbarmanager.h

@@ -0,0 +1,151 @@
+// SPDX-FileCopyrightText: 2024 (c) Jack Hill <jackhill3103@gmail.com>
+// SPDX-FileCopyrightText: 2025 (c) Gary Wang <opensource@blumia.net>
+//
+// SPDX-License-Identifier: LGPL-3.0-or-later
+//
+// This file is modified based on Elisa's taskmanager.cpp implementation,
+// with its Qt Quick usage removed.
+
+#ifndef TASKBAR_H
+#define TASKBAR_H
+
+#include <QAbstractNativeEventFilter>
+#include <QMediaPlayer>
+#include <QWindow>
+
+#include <memory>
+
+class TaskBarManagerPrivate;
+
+/**
+ * Windows taskbar
+ */
+class TaskBarManager : public QObject, public QAbstractNativeEventFilter
+{
+    Q_OBJECT
+
+    /**
+     * Whether the media is playing, paused, or stopped
+     */
+    Q_PROPERTY(QMediaPlayer::PlaybackState playbackState
+               READ playbackState
+               WRITE setPlaybackState
+               NOTIFY playbackStateChanged)
+
+    /**
+     * Whether to show track progress on the taskbar
+     */
+    Q_PROPERTY(bool showProgress
+               READ showProgress
+               WRITE setShowProgress
+               NOTIFY showProgressChanged)
+
+    /**
+     * Maximum possible progress
+     */
+    Q_PROPERTY(qulonglong progressMaximum
+               READ progressMaximum
+               WRITE setProgressMaximum
+               NOTIFY progressMaximumChanged)
+
+    /**
+     * Current progress; this is always clamped to be in the range [0, progressMaximum]
+     */
+    Q_PROPERTY(qulonglong progressValue
+               READ progressValue
+               WRITE setProgressValue
+               NOTIFY progressValueChanged)
+
+    /**
+     * Whether the "Skip Backward" button is enabled
+     */
+    Q_PROPERTY(bool canSkipBackward
+               READ canSkipBackward
+               WRITE setCanSkipBackward
+               NOTIFY canSkipBackwardChanged)
+
+    /**
+     * Whether the "Skip Forward" button is enabled
+     */
+    Q_PROPERTY(bool canSkipForward
+               READ canSkipForward
+               WRITE setCanSkipForward
+               NOTIFY canSkipForwardChanged)
+
+    /**
+     * Whether the "Toggle Playback" button is enabled
+     */
+    Q_PROPERTY(bool canTogglePlayback
+               READ canTogglePlayback
+               WRITE setCanTogglePlayback
+               NOTIFY canTogglePlaybackChanged)
+
+public:
+
+    explicit TaskBarManager(QObject *parent = nullptr);
+
+    ~TaskBarManager() override;
+
+    bool nativeEventFilter(const QByteArray &eventType, void *message, qintptr *result) override;
+
+    [[nodiscard]] QMediaPlayer::PlaybackState playbackState() const;
+
+    [[nodiscard]] bool showProgress() const;
+
+    [[nodiscard]] qulonglong progressMaximum() const;
+
+    [[nodiscard]] qulonglong progressValue() const;
+
+    [[nodiscard]] bool canSkipBackward() const;
+
+    [[nodiscard]] bool canSkipForward() const;
+
+    [[nodiscard]] bool canTogglePlayback() const;
+
+Q_SIGNALS:
+
+    void playbackStateChanged();
+
+    void showProgressChanged();
+
+    void progressMaximumChanged();
+
+    void progressValueChanged();
+
+    void canSkipBackwardChanged();
+
+    void canSkipForwardChanged();
+
+    void canTogglePlaybackChanged();
+
+    void skipBackward();
+
+    void skipForward();
+
+    void togglePlayback();
+
+public Q_SLOTS:
+
+    void setWinId(WId win);
+
+    void setPlaybackState(QMediaPlayer::PlaybackState newPlaybackState);
+
+    void setShowProgress(bool showProgress);
+
+    void setProgressMaximum(qlonglong newMaximum);
+
+    void setProgressValue(qlonglong newValue);
+
+    void setCanSkipBackward(bool canSkip);
+
+    void setCanSkipForward(bool canSkip);
+
+    void setCanTogglePlayback(bool canToggle);
+
+private:
+
+    std::unique_ptr<TaskBarManagerPrivate> d;
+
+};
+
+#endif // TASKBAR_H

taskbarmanager_dummy.cpp

@@ -0,0 +1,97 @@
+// SPDX-FileCopyrightText: 2025 Gary Wang <opensource@blumia.net>
+//
+// SPDX-License-Identifier: MIT
+
+#include "taskbarmanager.h"
+
+#include <QDebug>
+
+class TaskBarManagerPrivate {};
+
+TaskBarManager::TaskBarManager(QObject *parent)
+    : QObject(parent)
+{
+}
+
+TaskBarManager::~TaskBarManager() = default;
+
+bool TaskBarManager::nativeEventFilter(const QByteArray &eventType, void *message, qintptr *)
+{
+    return false;
+}
+
+QMediaPlayer::PlaybackState TaskBarManager::playbackState() const
+{
+    return QMediaPlayer::StoppedState;
+}
+
+bool TaskBarManager::showProgress() const
+{
+    return false;
+}
+
+qulonglong TaskBarManager::progressMaximum() const
+{
+    return 100;
+}
+
+qulonglong TaskBarManager::progressValue() const
+{
+    return 50;
+}
+
+bool TaskBarManager::canSkipBackward() const
+{
+    return false;
+}
+
+bool TaskBarManager::canSkipForward() const
+{
+    return false;
+}
+
+bool TaskBarManager::canTogglePlayback() const
+{
+    return false;
+}
+
+void TaskBarManager::setWinId(WId winId)
+{
+}
+
+void TaskBarManager::setPlaybackState(const QMediaPlayer::PlaybackState newPlaybackState)
+{
+    Q_UNUSED(newPlaybackState);
+}
+
+void TaskBarManager::setShowProgress(const bool showProgress)
+{
+    Q_UNUSED(showProgress);
+}
+
+void TaskBarManager::setProgressMaximum(const qlonglong newMaximum)
+{
+    Q_UNUSED(newMaximum);
+}
+
+void TaskBarManager::setProgressValue(const qlonglong newValue)
+{
+    Q_UNUSED(newValue);
+}
+
+void TaskBarManager::setCanSkipBackward(const bool canSkip)
+{
+    Q_UNUSED(canSkip);
+}
+
+void TaskBarManager::setCanSkipForward(const bool canSkip)
+{
+    Q_UNUSED(canSkip);
+}
+
+void TaskBarManager::setCanTogglePlayback(const bool canToggle)
+{
+    Q_UNUSED(canToggle);
+}
+
+#include "moc_taskbarmanager.cpp"