[功能更新与优化] 统一跨平台播放器控件实现，并新增基于 Qt 的 QPlayer 示例。

- 控件实现统一：在 Windows 和 Unix 系统下统一了 `ControlWidget` 和 `TitleWidget` 的行为，提升了视频窗口与控件的交互体验。 - 新增 QPlayer 示例：引入了基于 Qt Multimedia Widgets 的新播放器示例 `QPlayer`，提供了一个简洁的播放解决方案。 - 项目文件更新：更新了 CMakeLists.txt 和 .pro 文件，整合了新的 `qplayer` 示例目录，并优化了库的链接。
RealChuan · Oct 11, 2024 · 11567fe · 11567fe
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diff --git a/README.md b/README.md
@@ -110,11 +110,6 @@ transcodeCtx->audioPts += frame->nb_samples;
     qt.dbus.integration: Could not connect "org.freedesktop.IBus" to globalEngineChanged(QString)
     ```
 
-- 在Windows和Unix下，ControlWidget和TitleWidget的控制方式不同
-
-  1. Windows下使用 `mpv_set_property(d_ptr->mpv, "wid", MPV_FORMAT_INT64, &wid);`，使用layout布局，会使得视频窗口在最前面，遮挡ControlWidget和TitleWidget，所以将ControlWidget和TitleWidget悬浮在视频窗口上方，使用 `eventFilter`去处理大部分情况下ControlWidget和TitleWidget的显示，写的非常啰嗦，但是为了能够使用D3D11渲染，更棒的性能，只能这样处理，也是值得的；
-  2. Unix下使用QOpenGLWidget，使用layout布局更加方便；
-
 - MacOS打包需要[install_name_tool](/mac/change_lib_dependencies.rb)，依赖拷贝脚本文件来自[iina](https://github.com/iina/iina/blob/develop/other/change_lib_dependencies.rb)；
 
     **当前 `brew`安装的 `mpv`中，`libmpv.dylib`的依赖是 `@loader_path/`，所以对脚本进行了一些修改；**
@@ -125,6 +120,10 @@ transcodeCtx->audioPts += frame->nb_samples;
 
 依赖会拷贝到 `packet/Qt-Mpv.app/Contents/Frameworks/`；
 
+# QPlayer
+
+- 参考 [Media Player Example](https://doc.qt.io/qt-6/qtmultimedia-player-example.html)
+
 ## QT-BUG
 
 - 动态切换Video Render，从opengl切换到widget，还是有GPU 0-3D占用，而且使用量是opengl的2倍！！！QT-BUG？

diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
@@ -1,5 +1,6 @@
 add_subdirectory(ffmpegplayer)
 add_subdirectory(ffmpegtranscoder)
+add_subdirectory(qplayer)
 
 if(BUILD_MPV)
   add_subdirectory(mpvplayer)

diff --git a/examples/common/commonstr.hpp b/examples/common/commonstr.hpp
@@ -0,0 +1,12 @@
+#pragma once
+
+#include <QCoreApplication>
+
+namespace Common {
+
+struct Tr
+{
+    Q_DECLARE_TR_FUNCTIONS(Common)
+};
+
+} // namespace Common
diff --git a/examples/common/controlwidget.cc b/examples/common/controlwidget.cc
@@ -131,9 +131,6 @@ ControlWidget::ControlWidget(QWidget *parent)
     : QWidget{parent}
     , d_ptr(new ControlWidgetPrivate(this))
 {
-    setWindowFlags(windowFlags() | Qt::FramelessWindowHint | Qt::Tool);
-    setAttribute(Qt::WA_TranslucentBackground); //设置窗口背景透明
-
     d_ptr->setupUI();
     buildConnect();
     d_ptr->initModelButton();
@@ -213,7 +210,7 @@ void ControlWidget::setDuration(int value)
     setPosition(0);
 }
 
-#ifdef MPV_ON
+#if defined(MPV_ON)
 void ControlWidget::setChapters(const Mpv::Chapters &chapters)
 {
     QVector<qint64> nodes;
@@ -222,7 +219,7 @@ void ControlWidget::setChapters(const Mpv::Chapters &chapters)
     }
     d_ptr->slider->setNodes(nodes);
 }
-#else
+#elif defined(FFMPEG_ON)
 void ControlWidget::setChapters(const Ffmpeg::Chapters &chapters)
 {
     QVector<qint64> nodes;

diff --git a/examples/common/controlwidget.hpp b/examples/common/controlwidget.hpp
@@ -1,9 +1,9 @@
 #ifndef CONTROLWIDGET_HPP
 #define CONTROLWIDGET_HPP
 
-#ifdef MPV_ON
+#if defined(MPV_ON)
 #include <mpv/mediainfo.hpp>
-#else
+#elif defined(FFMPEG_ON)
 #include <ffmpeg/mediainfo.hpp>
 #endif
 
@@ -21,9 +21,9 @@ class ControlWidget : public QWidget
 
     void setDuration(int value);
     [[nodiscard]] auto duration() const -> int;
-#ifdef MPV_ON
+#if defined(MPV_ON)
     void setChapters(const Mpv::Chapters &chapters);
-#else
+#elif defined(FFMPEG_ON)
     void setChapters(const Ffmpeg::Chapters &chapters);
 #endif
     [[nodiscard]] auto sliderGlobalPos() const -> QPoint;

diff --git a/examples/common/titlewidget.cc b/examples/common/titlewidget.cc
@@ -25,8 +25,6 @@ TitleWidget::TitleWidget(QWidget *parent)
     : QWidget{parent}
     , d_ptr(new TitleWidgetPrivate(this))
 {
-    setWindowFlags(windowFlags() | Qt::FramelessWindowHint | Qt::Tool);
-    setAttribute(Qt::WA_TranslucentBackground);
 
     setupUI();
     buildConnect();

diff --git a/examples/examples.pro b/examples/examples.pro
@@ -3,7 +3,8 @@ CONFIG += ordered
 
 SUBDIRS += \
     ffmpegplayer \
-    ffmpegtranscoder
+    ffmpegtranscoder \
+    qplayer
 
 win32 {
     exists("C:/3rd/x64/mpv/include"){

diff --git a/examples/ffmpegplayer/CMakeLists.txt b/examples/ffmpegplayer/CMakeLists.txt
@@ -1,4 +1,5 @@
 set(PROJECT_SOURCES
+    ../common/commonstr.hpp
     ../common/controlwidget.cc
     ../common/controlwidget.hpp
     ../common/equalizerdialog.cpp
@@ -24,16 +25,17 @@ set(PROJECT_SOURCES
     mainwindow.h)
 
 qt_add_executable(FfmpegPlayer MANUAL_FINALIZATION ${PROJECT_SOURCES})
+target_compile_definitions(FfmpegPlayer PRIVATE "FFMPEG_ON")
 target_link_libraries(
   FfmpegPlayer
   PRIVATE ffmpeg
           mediaconfig
           thirdparty
           dump
           utils
-          Qt6::Widgets
-          Qt6::Multimedia
-          Qt6::OpenGLWidgets)
+          Qt::Widgets
+          Qt::Multimedia
+          Qt::OpenGLWidgets)
 target_link_libraries(FfmpegPlayer PRIVATE PkgConfig::ffmpeg)
 if(CMAKE_HOST_APPLE)
   target_link_libraries(

diff --git a/examples/ffmpegplayer/ffmpegplayer.pro b/examples/ffmpegplayer/ffmpegplayer.pro
@@ -6,6 +6,8 @@ TEMPLATE = app
 
 TARGET = FfmpegPlayer
 
+DEFINES += FFMPEG_ON
+
 LIBS += \
     -l$$replaceLibName(ffmpeg) \
     -l$$replaceLibName(mediaconfig) \
@@ -30,6 +32,7 @@ SOURCES += \
     mainwindow.cpp
 
 HEADERS += \
+    ../common/commonstr.hpp \
     ../common/controlwidget.hpp \
     ../common/equalizerdialog.h \
     ../common/openwebmediadialog.hpp \

diff --git a/examples/ffmpegplayer/mainwindow.cpp b/examples/ffmpegplayer/mainwindow.cpp
@@ -1,5 +1,6 @@
 #include "mainwindow.h"
 
+#include <examples/common/commonstr.hpp>
 #include <examples/common/controlwidget.hpp>
 #include <examples/common/equalizerdialog.h>
 #include <examples/common/openwebmediadialog.hpp>
@@ -18,6 +19,7 @@
 #include <ffmpeg/videorender/videorendercreate.hpp>
 #include <ffmpeg/widgets/mediainfodialog.hpp>
 
+#include <QMediaDevices>
 #include <QtWidgets>
 
 class MainWindow::MainWindowPrivate
@@ -32,27 +34,19 @@ class MainWindow::MainWindowPrivate
         titleWidget = new TitleWidget(q_ptr);
         titleWidget->setMinimumHeight(80);
         titleWidget->setVisible(false);
-        auto *bottomLayout = new QHBoxLayout;
-        bottomLayout->addStretch();
-        bottomLayout->addWidget(controlWidget);
-        bottomLayout->addStretch();
-        controlLayout = new QVBoxLayout;
-        controlLayout->addWidget(titleWidget);
-        controlLayout->addStretch();
-        controlLayout->addLayout(bottomLayout);
 
         playlistModel = new PlaylistModel(q_ptr);
         playlistView = new PlayListView(q_ptr);
         playlistView->setModel(playlistModel);
         playlistView->setCurrentIndex(
             playlistModel->index(playlistModel->playlist()->currentIndex(), 0));
         //playlistView->setMaximumWidth(250);
+        playListMenu = new QMenu(q_ptr);
 
         menu = new QMenu(q_ptr);
-
-        videoMenu = new QMenu(QCoreApplication::translate("MainWindowPrivate", "Video"), q_ptr);
-        audioMenu = new QMenu(QCoreApplication::translate("MainWindowPrivate", "Audio"), q_ptr);
-        subMenu = new QMenu(QCoreApplication::translate("MainWindowPrivate", "Subtitles"), q_ptr);
+        videoMenu = new QMenu(Common::Tr::tr("Video"), q_ptr);
+        audioMenu = new QMenu(Common::Tr::tr("Audio"), q_ptr);
+        subMenu = new QMenu(Common::Tr::tr("Subtitles"), q_ptr);
 
         videoTracksGroup = new QActionGroup(q_ptr);
         videoTracksGroup->setExclusive(true);
@@ -61,27 +55,36 @@ class MainWindow::MainWindowPrivate
         subTracksGroup = new QActionGroup(q_ptr);
         subTracksGroup->setExclusive(true);
 
-        mediaInfoAction = new QAction(QCoreApplication::translate("MainWindowPrivate", "Media Info"),
-                                      q_ptr);
-
-        playListMenu = new QMenu(q_ptr);
+        mediaInfoAction = new QAction(Common::Tr::tr("Media Info"), q_ptr);
 
         fpsTimer = new QTimer(q_ptr);
 
-        splitter = new QSplitter(q_ptr);
-        splitter->addWidget(playlistView);
-
         initShortcut();
     }
 
     ~MainWindowPrivate() = default;
 
+    void setupUI()
+    {
+        auto *bottomLayout = new QHBoxLayout;
+        bottomLayout->addStretch();
+        bottomLayout->addWidget(controlWidget);
+        bottomLayout->addStretch();
+        controlLayout = new QVBoxLayout;
+        controlLayout->addWidget(titleWidget);
+        controlLayout->addStretch();
+        controlLayout->addLayout(bottomLayout);
+
+        splitter = new QSplitter(q_ptr);
+        splitter->addWidget(playlistView);
+        q_ptr->setCentralWidget(splitter);
+    }
+
     auto createToneMappingMenu() -> QMenu *
     {
         auto *group = new QActionGroup(q_ptr);
         group->setExclusive(true);
-        auto *menu = new QMenu(QCoreApplication::translate("MainWindowPrivate", "Tone-Mapping"),
-                               q_ptr);
+        auto *menu = new QMenu(Common::Tr::tr("Tone-Mapping"), q_ptr);
         auto toneMappings = QMetaEnum::fromType<Ffmpeg::ToneMapping::Type>();
         for (int i = 0; i < toneMappings.keyCount(); ++i) {
             auto value = toneMappings.value(i);
@@ -110,8 +113,7 @@ class MainWindow::MainWindowPrivate
     {
         auto *group = new QActionGroup(q_ptr);
         group->setExclusive(true);
-        auto *menu = new QMenu(QCoreApplication::translate("MainWindowPrivate", "Target Primaries"),
-                               q_ptr);
+        auto *menu = new QMenu(Common::Tr::tr("Target Primaries"), q_ptr);
         auto primaris = QMetaEnum::fromType<Ffmpeg::ColorUtils::Primaries::Type>();
         for (int i = 0; i < primaris.keyCount(); ++i) {
             auto value = primaris.value(i);
@@ -242,6 +244,24 @@ class MainWindow::MainWindowPrivate
         controlWidget->setPosition(0);
     }
 
+    void addToPlaylist(const QList<QUrl> &urls)
+    {
+        auto *playlist = playlistModel->playlist();
+        const int previousMediaCount = playlist->mediaCount();
+        for (const auto &url : urls) {
+            if (isPlaylist(url)) {
+                playlist->load(url);
+            } else {
+                playlist->addMedia(url);
+            }
+        }
+        if (playlist->mediaCount() > previousMediaCount) {
+            auto index = playlistModel->index(previousMediaCount, 0);
+            playlistView->setCurrentIndex(index);
+            q_ptr->jump(index);
+        }
+    }
+
     MainWindow *q_ptr;
 
     QScopedPointer<Ffmpeg::Player> playerPtr;
@@ -254,6 +274,8 @@ class MainWindow::MainWindowPrivate
 
     PlayListView *playlistView;
     PlaylistModel *playlistModel;
+    QMenu *playListMenu;
+    QSplitter *splitter;
 
     QMenu *menu;
 
@@ -271,12 +293,8 @@ class MainWindow::MainWindowPrivate
 
     QAction *mediaInfoAction;
 
-    QMenu *playListMenu;
-
     QTimer *fpsTimer;
 
-    QSplitter *splitter;
-
     Ffmpeg::ToneMapping::Type toneMappingType = Ffmpeg::ToneMapping::Type::AUTO;
     Ffmpeg::ColorUtils::Primaries::Type primarisType = Ffmpeg::ColorUtils::Primaries::Type::AUTO;
 };
@@ -287,7 +305,12 @@ MainWindow::MainWindow(QWidget *parent)
 {
     Ffmpeg::printFfmpegInfo();
 
-    setupUI();
+    // QPlatformMediaDevices中有一个static std::unique_ptr<QPlatformMediaDevices> create();
+    // 这个QPlatformMediaDevices最终会在主线程释放，需要在主线程创建
+    // 如果在主线程创建，会导致退出程序崩溃，ASSERT: "m_threadId == GetCurrentThreadId()"
+    QMediaDevices mediaDevices;
+
+    d_ptr->setupUI();
     buildConnect();
     initMenu();
     initPlayListMenu();
@@ -369,7 +392,7 @@ void MainWindow::onOpenLocalMedia()
     if (urls.isEmpty()) {
         return;
     }
-    addToPlaylist(urls);
+    d_ptr->addToPlaylist(urls);
 }
 
 void MainWindow::onOpenWebMedia()
@@ -379,7 +402,7 @@ void MainWindow::onOpenWebMedia()
     if (dialog.exec() != QDialog::Accepted) {
         return;
     }
-    addToPlaylist({QUrl(dialog.url())});
+    d_ptr->addToPlaylist({QUrl(dialog.url())});
 }
 
 void MainWindow::onRenderChanged(QAction *action)
@@ -552,7 +575,7 @@ auto MainWindow::eventFilter(QObject *watched, QEvent *event) -> bool
             auto *ev = dynamic_cast<QDropEvent *>(event);
             auto urls = ev->mimeData()->urls();
             if (!urls.isEmpty()) {
-                addToPlaylist(urls);
+                d_ptr->addToPlaylist(urls);
             }
         } break;
         case QEvent::ContextMenu: {
@@ -619,11 +642,6 @@ void MainWindow::keyPressEvent(QKeyEvent *event)
     }
 }
 
-void MainWindow::setupUI()
-{
-    setCentralWidget(d_ptr->splitter);
-}
-
 void MainWindow::buildConnect()
 {
     connect(d_ptr->playerPtr.data(),
@@ -776,21 +794,3 @@ void MainWindow::initPlayListMenu()
         d_ptr->playlistModel->playlist()->clear();
     });
 }
-
-void MainWindow::addToPlaylist(const QList<QUrl> &urls)
-{
-    auto *playlist = d_ptr->playlistModel->playlist();
-    const int previousMediaCount = playlist->mediaCount();
-    for (const auto &url : urls) {
-        if (isPlaylist(url)) {
-            playlist->load(url);
-        } else {
-            playlist->addMedia(url);
-        }
-    }
-    if (playlist->mediaCount() > previousMediaCount) {
-        auto index = d_ptr->playlistModel->index(previousMediaCount, 0);
-        d_ptr->playlistView->setCurrentIndex(index);
-        jump(index);
-    }
-}
diff --git a/examples/ffmpegplayer/mainwindow.h b/examples/ffmpegplayer/mainwindow.h
@@ -35,12 +35,10 @@ private slots:
     void keyPressEvent(QKeyEvent *event) override;
 
 private:
-    void setupUI();
     void buildConnect();
     void initMenu();
     void renderMenu();
     void initPlayListMenu();
-    void addToPlaylist(const QList<QUrl> &urls);
 
     class MainWindowPrivate;
     QScopedPointer<MainWindowPrivate> d_ptr;