[增加日志记录和配置目录设置功能]：在mpvplayer示例程序中增加了日志记录和配置目录设置的功能，并更新了相关代码。

- 在`mainwindow.cc`中为`mpvPlayer`增加了日志文件路径设置和配置目录设置，使用`Utils`命名空间下的函数获取日志路径和配置路径。
- 更新了`mpvplayer.cc`，为`MpvPlayer`类增加了设置和获取日志文件路径以及配置目录的函数。
- 在`mpvplayer.hpp`中，为`MpvPlayer`类声明了新的公共成员函数，包括设置和获取日志文件路径及配置目录。
- 修改了`previewwidget.cc`中的`startPreview`函数，使用新的接口设置音频和字幕轨道为"no"，替换了旧的阻塞方法。

examples/mpvplayer/mainwindow.cc

@@ -13,6 +13,7 @@
 #include <mpv/mpvplayer.hpp>
 #include <mpv/mpvwidget.hpp>
 #include <mpv/previewwidget.hpp>
+#include <utils/utils.h>
 
 #include <QtWidgets>
 
@@ -34,6 +35,12 @@ class MainWindow::MainWindowPrivate
         mpvWidget->setAcceptDrops(true);
         mpvPlayer->setPrintToStd(true);
 
+        auto logFilePath = QString("%1/mpv_%2.log")
+                               .arg(Utils::logPath(),
+                                    QDateTime::currentDateTime().toString("yyyyMMdd"));
+        mpvPlayer->setLogFile(logFilePath);
+        mpvPlayer->setConfigDir(Utils::configPath());
+
         logWindow = new Mpv::MpvLogWindow(q_ptr);
         logWindow->setMinimumSize(500, 325);
         logWindow->show();
@@ -773,15 +780,15 @@ void MainWindow::initMenu()
 
     connect(d_ptr->videoTracksGroup, &QActionGroup::triggered, this, [this](QAction *action) {
         auto data = action->data().value<Mpv::TraskInfo>();
-        d_ptr->mpvPlayer->setVideoTrack(data.id);
+        d_ptr->mpvPlayer->setVid(data.id);
     });
     connect(d_ptr->audioTracksGroup, &QActionGroup::triggered, this, [this](QAction *action) {
         auto data = action->data().value<Mpv::TraskInfo>();
-        d_ptr->mpvPlayer->setAudioTrack(data.id);
+        d_ptr->mpvPlayer->setAid(data.id);
     });
     connect(d_ptr->subTracksGroup, &QActionGroup::triggered, this, [this](QAction *action) {
         auto data = action->data().value<Mpv::TraskInfo>();
-        d_ptr->mpvPlayer->setSubTrack(data.id);
+        d_ptr->mpvPlayer->setSid(data.id);
     });
     connect(d_ptr->loadSubTitlesAction, &QAction::triggered, this, &MainWindow::onLoadSubtitleFiles);
     connect(d_ptr->subDelayAction,

src/mpv/mpvplayer.cc

@@ -242,37 +242,37 @@ auto MpvPlayer::subTracks() const -> TraskInfos
     return d_ptr->subTracks;
 }
 
-void MpvPlayer::setVideoTrack(int vid)
+void MpvPlayer::setVid(const QVariant &vid)
 {
     qInfo() << "vid: " << vid;
     mpv::qt::set_property_async(d_ptr->mpv, "vid", vid);
 }
 
-void MpvPlayer::blockVideoTrack()
+QVariant MpvPlayer::vid() const
 {
-    mpv::qt::set_property_async(d_ptr->mpv, "vid", "no");
+    return mpv::qt::get_property(d_ptr->mpv, "vid");
 }
 
-void MpvPlayer::setAudioTrack(int aid)
+void MpvPlayer::setAid(const QVariant &aid)
 {
     qInfo() << "aid: " << aid;
     mpv::qt::set_property_async(d_ptr->mpv, "aid", aid);
 }
 
-void MpvPlayer::blockAudioTrack()
+QVariant MpvPlayer::aid() const
 {
-    mpv::qt::set_property_async(d_ptr->mpv, "aid", "no");
+    return mpv::qt::get_property(d_ptr->mpv, "aid");
 }
 
-void MpvPlayer::setSubTrack(int sid)
+void MpvPlayer::setSid(const QVariant &sid)
 {
     qInfo() << "sid: " << sid;
     mpv::qt::set_property_async(d_ptr->mpv, "sid", sid);
 }
 
-void MpvPlayer::blockSubTrack()
+QVariant MpvPlayer::sid() const
 {
-    mpv::qt::set_property_async(d_ptr->mpv, "sid", "no");
+    return mpv::qt::get_property(d_ptr->mpv, "sid");
 }
 
 void MpvPlayer::addAudio(const QStringList &paths)
@@ -537,6 +537,28 @@ QString MpvPlayer::targetPrimariesName() const
     return mpv::qt::get_property(d_ptr->mpv, "target-prim").toString();
 }
 
+void MpvPlayer::setLogFile(const QString &logFile)
+{
+    qInfo() << "log-file: " << logFile;
+    mpv::qt::set_property_async(d_ptr->mpv, "log-file", logFile);
+}
+
+QString MpvPlayer::logFile() const
+{
+    return mpv::qt::get_property(d_ptr->mpv, "log-file").toString();
+}
+
+void MpvPlayer::setConfigDir(const QString &configDir)
+{
+    qInfo() << "config-dir: " << configDir;
+    mpv::qt::set_property_async(d_ptr->mpv, "config-dir", configDir);
+}
+
+QString MpvPlayer::configDir() const
+{
+    return mpv::qt::get_property(d_ptr->mpv, "config-dir").toString();
+}
+
 void MpvPlayer::pauseAsync()
 {
     auto state = !isPaused();

src/mpv/mpvplayer.hpp

@@ -37,12 +37,14 @@ class MPV_LIB_EXPORT MpvPlayer : public QObject
     [[nodiscard]] auto audioTracks() const -> TraskInfos;
     [[nodiscard]] auto subTracks() const -> TraskInfos;
 
-    void setVideoTrack(int vid);
-    void blockVideoTrack();
-    void setAudioTrack(int aid);
-    void blockAudioTrack();
-    void setSubTrack(int sid);
-    void blockSubTrack();
+    void setVid(const QVariant &vid);
+    [[nodiscard]] auto vid() const -> QVariant;
+
+    void setAid(const QVariant &aid);
+    [[nodiscard]] auto aid() const -> QVariant;
+
+    void setSid(const QVariant &sid);
+    [[nodiscard]] auto sid() const -> QVariant;
 
     void addAudio(const QStringList &paths);
     void addSub(const QStringList &paths);
@@ -98,6 +100,12 @@ class MPV_LIB_EXPORT MpvPlayer : public QObject
     void setTargetPrimaries(const QString &targetPrimaries);
     [[nodiscard]] auto targetPrimariesName() const -> QString;
 
+    void setLogFile(const QString &logFile);
+    [[nodiscard]] auto logFile() const -> QString;
+
+    void setConfigDir(const QString &configDir);
+    [[nodiscard]] auto configDir() const -> QString;
+
     void pauseAsync();
     void pauseSync(bool state);
     auto isPaused() -> bool;

src/mpv/previewwidget.cc

@@ -45,8 +45,8 @@ void PreviewWidget::startPreview(const QString &filepath, int timestamp)
 {
     if (filepath != d_ptr->mpvPlayer->filepath()) {
         d_ptr->mpvPlayer->openMedia(filepath);
-        d_ptr->mpvPlayer->blockAudioTrack();
-        d_ptr->mpvPlayer->blockSubTrack();
+        d_ptr->mpvPlayer->setAid("no");
+        d_ptr->mpvPlayer->setSid("no");
     }
     d_ptr->mpvPlayer->seek(timestamp);
 }