202508081811

包帳 State 没變 不重復做
VideoPlayForm 大調整

Program.cs

@@ -13,7 +13,7 @@ namespace DualScreenDemo
         private static PrimaryForm primaryForm; // 儲存實例的參考
         public static Room room = new Room();
 
-        public static string verSion = "Server V2.7 202508041725";
+        public static string verSion = "Server V2.8 202508071811";
 
         [STAThread]
         static void Main()
@@ -82,9 +82,6 @@ namespace DualScreenDemo
 
                         // 显示 videoPlayerForm 在第二显示器
                         primaryForm.videoPlayerForm.Show();
-
-                        // 初始化公共播放列表
-                        primaryForm.videoPlayerForm.PlayNextSong();
                     }
                 }
                 primaryForm.Show();

Room.cs

@@ -65,23 +65,27 @@ namespace DualScreenDemo
         }
         public void set(string value)
         {
-            State =getDB();
+            string StateDB=getDB();
-            Console.WriteLine($"hostname status: {hostName},{State},{startedAt},{endedAt}");
+             
+            Console.WriteLine($"hostname status: {hostName},{StateDB},{startedAt},{endedAt} ,{State}");
             string marqueeMessage = "歡迎使用超級巨星歡唱，與你共度美好時光。";
             Color c = Color.White;
-            if (State.Equals("fire"))
+            if (StateDB.Equals("fire"))
             {
                 PrimaryForm.Instance.ShowSendOffScreen();
                 VideoPlayerForm.Instance.Pause();
                 marqueeMessage = "發生火災，請跟隨引導至逃生出口!!!";
                 c = Color.Red;
             }
-            else if (State.Equals("active"))
+            else if (StateDB.Equals("active"))
+            {
+                if (!State.Equals(StateDB))
                 {
                     DBObj.SongList.clearSong();
                     PrimaryForm.Instance.HotPlayButton_Click(null, EventArgs.Empty);
                     PrimaryForm.Instance.HideSendOffScreen();
                 }
+            }
             else
             {
                 DBObj.SongList.roomClose();

Services/MediaService.cs

@@ -0,0 +1,370 @@
+using DirectShowLib;
+using System;
+using System.Runtime.InteropServices;
+
+namespace DualScreenDemo.Services
+{
+    public class MediaService
+    {
+        public IGraphBuilder graphBuilder;
+        private IMediaControl mediaControl;
+        private IBaseFilter videoRenderer;
+        private IBaseFilter lavSplitter;
+        private IBaseFilter lavVideoDecoder;
+        private IBaseFilter lavAudioDecoder;
+        private IPin outputPin;
+        private IBaseFilter audioRenderer;
+        private IVideoWindow videoWindow;
+
+
+        public int Run()
+        {
+            if (mediaControl != null)
+                return mediaControl.Run();
+            else
+                return 0;
+        }
+        public int Stop()
+        {
+            if (mediaControl != null)
+                return mediaControl.Stop();
+            else
+                return 0;
+
+        }
+        public int Pause()
+        {
+            if (mediaControl != null)
+                return mediaControl.Pause();
+            else
+                return 0;
+        }
+        public void VideoPlayerFormClosing()
+        {
+            if (videoWindow != null)
+            {
+                videoWindow.put_Visible(OABool.False);
+                videoWindow.put_Owner(IntPtr.Zero);
+                Marshal.ReleaseComObject(videoWindow);
+                videoWindow = null;
+            }
+        }
+        public void StopAndReleaseResources()
+        {
+            if (mediaControl != null)
+            {
+                mediaControl.Stop();
+                SafeRelease(ref mediaControl);
+            }
+            SafeRelease(ref videoWindow);
+            SafeRelease(ref videoRenderer);
+            SafeRelease(ref lavAudioDecoder);
+            SafeRelease(ref outputPin);
+            SafeRelease(ref lavVideoDecoder);
+            SafeRelease(ref lavSplitter);
+            SafeRelease(ref graphBuilder);
+            
+        }
+        public bool isAtEnd()
+        {
+            bool isAtEnd = false;
+            if (mediaControl == null) { return false; }
+            IMediaSeeking mediaSeeking = graphBuilder as IMediaSeeking;
+            if (mediaSeeking != null)
+            {
+                long currentPosition;
+                long duration;
+                if (mediaSeeking.GetCurrentPosition(out currentPosition) >= 0 &&
+                    mediaSeeking.GetDuration(out duration) >= 0)
+                {
+                    double currentSeconds = currentPosition / 10000000.0;
+                    double durationSeconds = duration / 10000000.0;
+
+                    // 添加更严格的结束条件判断
+                    isAtEnd = durationSeconds > 0 && currentSeconds > 0 &&
+                                 Math.Abs(currentSeconds - durationSeconds) < 0.1; // 确保真的到了结尾
+                    //Console.WriteLine($"檢測到歌曲 - 當前位置: {currentSeconds:F2}秒, 總時長: {durationSeconds:F2}秒");
+                    if (isAtEnd)
+                    { 
+                        Console.WriteLine($"檢測到歌曲 -結束: {currentSeconds:F2}秒, 總時長: {durationSeconds:F2}秒");
+                    }
+                }
+            }
+            return isAtEnd;
+        }
+        public void RenderMediaFile(string filePath, nint Handle, int Width, int Height)
+        {
+            StopAndReleaseResources();
+            if (videoWindow != null) videoWindow.put_Visible(OABool.False);
+            int hr = 0;
+            graphBuilder = (IGraphBuilder)new FilterGraph();
+            if (graphBuilder == null)
+            {
+                Console.WriteLine("Failed to create FilterGraph");
+                throw new Exception("Failed to create FilterGraph");
+            }
+            try
+            {
+                lavSplitter = AddFilterByClsid(graphBuilder, "LAV Splitter", Clsid.LAVSplitter);
+                lavVideoDecoder = AddFilterByClsid(graphBuilder, "LAV Video Decoder", Clsid.LAVVideoDecoder);
+                lavAudioDecoder = AddFilterByClsid(graphBuilder, "LAV Audio Decoder", Clsid.LAVAudioDecoder);
+                outputPin = FindPin(lavAudioDecoder, "Output");
+                videoRenderer = AddFilterByClsid(graphBuilder, "Secondary Video Renderer", Clsid.VideoRenderer);
+                if (videoRenderer == null)
+                {
+                    Console.WriteLine("Failed to initialize Secondary Video Renderer.");
+                    return;
+                }
+                hr = graphBuilder.AddFilter(videoRenderer, "Secondary Video Renderer");
+                DsError.ThrowExceptionForHR(hr);
+                var clsidAudioRenderer = new Guid("79376820-07D0-11CF-A24D-0020AFD79767");  // CLSID for DirectSound Renderer
+                audioRenderer = (IBaseFilter)Activator.CreateInstance(Type.GetTypeFromCLSID(clsidAudioRenderer));
+                hr = graphBuilder.AddFilter(audioRenderer, "Default DirectSound Device");
+                DsError.ThrowExceptionForHR(hr);
+
+                mediaControl = (IMediaControl)graphBuilder;
+                if (mediaControl == null)
+                {
+                    Console.WriteLine("Failed to get Media Control");
+                    return;
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine("Error initializing graph builder with second monitor: " + ex.Message);
+            }
+            hr = graphBuilder.RenderFile(filePath, null);
+            if (hr == 0)
+            {
+                Console.WriteLine("Secondary File rendered successfully.");
+                SetAudioTrackTo(1);
+            }
+            else
+            {
+                Console.WriteLine("Failed to render secondary file.");
+            }
+            // 绑定视频窗口到副屏幕
+            videoWindow = videoRenderer as IVideoWindow;
+            if (videoWindow != null)
+            {
+                videoWindow.put_Owner(Handle); // 副屏幕窗口句柄
+                videoWindow.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipChildren | WindowStyle.ClipSiblings);
+                videoWindow.SetWindowPosition(0, 0, Width, Height);
+                videoWindow.put_Visible(OABool.True); // 显示窗口
+            }
+        }
+
+        private static IBaseFilter AddFilterByClsid(IGraphBuilder graphBuilder, string name, Guid clsid)
+        {
+            try
+            {
+                // 获取 CLSID 对应的类型
+                Type filterType = Type.GetTypeFromCLSID(clsid);
+                //Console.WriteLine($"Attempting to create filter of type: {filterType.FullName}");
+
+                // 创建实例
+                object filterObject = Activator.CreateInstance(filterType);
+
+                // 尝试转换为 IBaseFilter
+                IBaseFilter filter = filterObject as IBaseFilter;
+
+                if (filter == null)
+                {
+                    // 如果转换失败，使用 IUnknown 获取并转换为 IBaseFilter
+                    IntPtr comObjectPointer = Marshal.GetIUnknownForObject(filterObject);
+                    filter = (IBaseFilter)Marshal.GetObjectForIUnknown(comObjectPointer);
+                    // Console.WriteLine($"Successfully converted COM object to IBaseFilter via IUnknown.");
+                }
+                else
+                {
+                    // Console.WriteLine($"Successfully created IBaseFilter directly.");
+                }
+
+                // 添加过滤器到图形构建器
+                int hr = graphBuilder.AddFilter(filter, name);
+                if (hr != 0)
+                {
+                    // Console.WriteLine($"Failed to add filter {name} with CLSID {clsid}, HRESULT: {hr}");
+                }
+
+                DsError.ThrowExceptionForHR(hr);
+                // Console.WriteLine($"Successfully added filter {name} with CLSID {clsid}");
+                return filter;
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Exception in AddFilterByClsid: {ex.Message}");
+                throw; // Rethrow the exception to handle it further up the call stack
+            }
+        }
+        private IPin FindPin(IBaseFilter filter, string pinName)
+        {
+            IEnumPins enumPins;
+            IPin[] pins = new IPin[1];
+
+            filter.EnumPins(out enumPins);
+            enumPins.Reset();
+
+            while (enumPins.Next(1, pins, IntPtr.Zero) == 0)
+            {
+                PinInfo pinInfo;
+                pins[0].QueryPinInfo(out pinInfo);
+                Console.WriteLine(pinInfo);
+
+                if (pinInfo.name == pinName)
+                {
+                    return pins[0];
+                }
+            }
+            return null;
+        }
+        public void SetVolume(int volume)
+        {
+            if (audioRenderer != null)
+            {
+                IBasicAudio basicAudio = audioRenderer as IBasicAudio;
+                if (basicAudio != null)
+                {
+                    basicAudio.put_Volume(volume);
+                }
+            }
+        }
+        public int GetVolume()
+        {
+            if (audioRenderer != null)
+            {
+                IBasicAudio basicAudio = audioRenderer as IBasicAudio;
+                if (basicAudio != null)
+                {
+                    int volume;
+                    basicAudio.get_Volume(out volume);
+                    return volume;
+                }
+            }
+            return -10000;
+        }
+        private bool isVocalRemoved = false;
+        public bool ToggleVocalRemoval()
+        {
+            try
+            {
+                IAMStreamSelect streamSelect = lavSplitter as IAMStreamSelect;
+
+                if (streamSelect != null)
+                {
+                    int trackCount;
+                    if (streamSelect.Count(out trackCount) == 0 && trackCount > 0)
+                    {
+                        int currentTrackIndex = -1;
+                        int audioTrack1 = -1;
+                        int audioTrack2 = -1;
+
+                        for (int i = 0; i < trackCount; i++)
+                        {
+                            // 獲取音軌信息
+                            AMMediaType mediaType;
+                            AMStreamSelectInfoFlags flags;
+                            int lcid, dwGroup;
+                            string name;
+                            object pObject, pUnk;
+
+                            streamSelect.Info(i, out mediaType, out flags, out lcid, out dwGroup, out name, out pObject, out pUnk);
+
+                            if (mediaType.majorType == MediaType.Audio)
+                            {
+                                if (audioTrack1 == -1)
+                                {
+                                    audioTrack1 = i;
+                                }
+                                else if (audioTrack2 == -1)
+                                {
+                                    audioTrack2 = i;
+                                }
+
+                                if ((flags & AMStreamSelectInfoFlags.Enabled) != 0)
+                                {
+                                    currentTrackIndex = i;
+                                }
+                            }
+
+                            DsUtils.FreeAMMediaType(mediaType);
+                        }
+
+                        // 切換音軌
+                        if (currentTrackIndex == audioTrack1 && audioTrack2 != -1)
+                        {
+                            streamSelect.Enable(audioTrack2, AMStreamSelectEnableFlags.Enable);
+                            isVocalRemoved = true;
+                        }
+                        else if (currentTrackIndex == audioTrack2 && audioTrack1 != -1)
+                        {
+                            streamSelect.Enable(audioTrack1, AMStreamSelectEnableFlags.Enable);
+                            isVocalRemoved = false;
+                        }
+
+
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(ex.Message);
+            }
+            return isVocalRemoved;
+        }
+        public void SetAudioTrackTo(int trackIndex)
+        {
+            try
+            {
+                IAMStreamSelect streamSelect = lavSplitter as IAMStreamSelect;
+
+                if (streamSelect != null)
+                {
+                    int trackCount;
+                    if (streamSelect.Count(out trackCount) == 0 && trackCount > 0)
+                    {
+                        int audioTrackIndex = -1;
+
+                        for (int i = 0; i < trackCount; i++)
+                        {
+                            AMMediaType mediaType;
+                            AMStreamSelectInfoFlags flags;
+                            int lcid, dwGroup;
+                            string name;
+                            object pObject, pUnk;
+
+                            streamSelect.Info(i, out mediaType, out flags, out lcid, out dwGroup, out name, out pObject, out pUnk);
+
+                            if (mediaType.majorType == MediaType.Audio)
+                            {
+                                audioTrackIndex++;
+                                if (audioTrackIndex == trackIndex)
+                                {
+                                    streamSelect.Enable(i, AMStreamSelectEnableFlags.Enable);
+                                }
+                                else
+                                {
+                                    streamSelect.Enable(i, AMStreamSelectEnableFlags.DisableAll);
+                                }
+                            }
+
+                            DsUtils.FreeAMMediaType(mediaType);
+                        }
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine(ex.Message);
+            }
+        }
+        private void SafeRelease<T>(ref T comObject) where T : class
+        {
+            if (comObject != null)
+            {
+                Marshal.ReleaseComObject(comObject);
+                comObject = null;
+            }
+        }
+    }
+}

Services/MediaServicePrimary.cs

@@ -0,0 +1,210 @@
+using DirectShowLib;
+using System;
+using System.Runtime.InteropServices;
+
+namespace DualScreenDemo.Services
+{
+    public class MediaServicePrimary
+    {
+        IGraphBuilder graphBuilder;
+        IBaseFilter sourceFilter;
+        IBaseFilter lavSplitter;
+        IBaseFilter lavVideoDecoder;
+        IBaseFilter videoRenderer;
+        IVideoWindow videoWindow;
+        IMediaControl mediaControl;
+
+
+        public MediaServicePrimary(){}
+
+        public int Run()
+        {
+            if (mediaControl != null)
+                return mediaControl.Run();
+            else
+                return 0;
+        }
+        public int Stop()
+        {
+            if (mediaControl != null)
+                return mediaControl.Stop();
+            else
+                return 0;
+
+        }
+        public int Pause()
+        {
+            if (mediaControl != null)
+                return mediaControl.Pause();
+            else
+                return 0;
+        }
+        public void VideoPlayerFormClosing()
+        {
+            if (videoWindow != null)
+            {
+                videoWindow.put_Visible(OABool.False);
+                videoWindow.put_Owner(IntPtr.Zero);
+                Marshal.ReleaseComObject(videoWindow);
+                videoWindow = null;
+            }
+        }
+
+        public void StopAndReleaseResources()
+        {
+            if (mediaControl != null)
+            {
+                mediaControl.Stop();
+                SafeRelease(ref mediaControl);
+            }
+            SafeRelease(ref videoWindow);
+            SafeRelease(ref videoRenderer);
+            SafeRelease(ref sourceFilter);
+            SafeRelease(ref lavVideoDecoder);
+            SafeRelease(ref lavSplitter);
+            SafeRelease(ref graphBuilder);
+        }
+
+        public void RenderMediaFile(string filePath, nint Handle, int Width, int Height)
+        {
+            StopAndReleaseResources();
+            if (videoWindow != null) videoWindow.put_Visible(OABool.False);
+
+            int hr;
+            graphBuilder = (IGraphBuilder)new FilterGraph();
+            if (graphBuilder == null)
+                throw new Exception("Failed to create FilterGraph for primary monitor.");
+
+            graphBuilder.AddSourceFilter(filePath, "Source", out sourceFilter);
+            try
+            {
+                lavSplitter = AddFilterByClsid(graphBuilder, "LAV Splitter", Clsid.LAVSplitter);
+                lavVideoDecoder = AddFilterByClsid(graphBuilder, "LAV Video Decoder", Clsid.LAVVideoDecoder);
+                videoRenderer = AddFilterByClsid(graphBuilder, "Primary Video Renderer", Clsid.VideoRenderer);
+                hr = graphBuilder.AddFilter(videoRenderer, "Primary Video Renderer");
+                DsError.ThrowExceptionForHR(hr);
+
+                mediaControl = (IMediaControl)graphBuilder;
+                if (mediaControl == null)
+                {
+                    Console.WriteLine("Failed to get Media Control for primary monitor.");
+                    return;
+                }
+                hr = ConnectFilters(graphBuilder, sourceFilter, "Output", lavSplitter, "Input");
+                DsError.ThrowExceptionForHR(hr);
+                hr = ConnectFilters(graphBuilder, lavSplitter, "Video", lavVideoDecoder, "Input");
+                DsError.ThrowExceptionForHR(hr);
+                hr = ConnectFilters(graphBuilder, lavVideoDecoder, "Output", videoRenderer, "VMR Input0");
+                DsError.ThrowExceptionForHR(hr);
+
+                try
+                {
+
+                    IVideoWindow videoWindow = (IVideoWindow)videoRenderer;
+                    videoWindow.put_Owner(Handle);
+                    videoWindow.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipChildren);
+
+                    // ⬅ 左上角對齊（固定從 0,0 開始）
+                    videoWindow.SetWindowPosition(0, 0, Width, Height);
+
+                    videoWindow.put_Visible(OABool.True);
+
+                    // Console.WriteLine("Video window configured successfully.");
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine(String.Format("Error syncing to primary monitor: {0}", ex.Message));
+                    MessageBox.Show(String.Format("Error syncing to primary monitor: {0}", ex.Message));
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine("Error initializing graph builder for primary monitor: " + ex.Message);
+            }
+        }
+        private static IBaseFilter AddFilterByClsid(IGraphBuilder graphBuilder, string name, Guid clsid)
+        {
+            try
+            {
+                // 获取 CLSID 对应的类型
+                Type filterType = Type.GetTypeFromCLSID(clsid);
+                //Console.WriteLine($"Attempting to create filter of type: {filterType.FullName}");
+
+                // 创建实例
+                object filterObject = Activator.CreateInstance(filterType);
+
+                // 尝试转换为 IBaseFilter
+                IBaseFilter filter = filterObject as IBaseFilter;
+
+                if (filter == null)
+                {
+                    // 如果转换失败，使用 IUnknown 获取并转换为 IBaseFilter
+                    IntPtr comObjectPointer = Marshal.GetIUnknownForObject(filterObject);
+                    filter = (IBaseFilter)Marshal.GetObjectForIUnknown(comObjectPointer);
+                    // Console.WriteLine($"Successfully converted COM object to IBaseFilter via IUnknown.");
+                }
+                else
+                {
+                    // Console.WriteLine($"Successfully created IBaseFilter directly.");
+                }
+
+                // 添加过滤器到图形构建器
+                int hr = graphBuilder.AddFilter(filter, name);
+                if (hr != 0)
+                {
+                    // Console.WriteLine($"Failed to add filter {name} with CLSID {clsid}, HRESULT: {hr}");
+                }
+
+                DsError.ThrowExceptionForHR(hr);
+                // Console.WriteLine($"Successfully added filter {name} with CLSID {clsid}");
+                return filter;
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Exception in AddFilterByClsid: {ex.Message}");
+                throw; // Rethrow the exception to handle it further up the call stack
+            }
+        }
+        private int ConnectFilters(IGraphBuilder graphBuilder, IBaseFilter sourceFilter, string sourcePinName, IBaseFilter destFilter, string destPinName)
+        {
+            IPin outPin = FindPin(sourceFilter, sourcePinName);
+            IPin inPin = FindPin(destFilter, destPinName);
+            if (outPin == null || inPin == null)
+            {
+                Console.WriteLine(String.Format("Cannot find pins: {0} or {1}", sourcePinName, destPinName));
+                return -1;
+            }
+            int hr = graphBuilder.Connect(outPin, inPin);
+            return hr;
+        }
+        private IPin FindPin(IBaseFilter filter, string pinName)
+        {
+            IEnumPins enumPins;
+            IPin[] pins = new IPin[1];
+
+            filter.EnumPins(out enumPins);
+            enumPins.Reset();
+
+            while (enumPins.Next(1, pins, IntPtr.Zero) == 0)
+            {
+                PinInfo pinInfo;
+                pins[0].QueryPinInfo(out pinInfo);
+                Console.WriteLine(pinInfo);
+
+                if (pinInfo.name == pinName)
+                {
+                    return pins[0];
+                }
+            }
+            return null;
+        }
+        private void SafeRelease<T>(ref T comObject) where T : class
+        {
+            if (comObject != null)
+            {
+                Marshal.ReleaseComObject(comObject);
+                comObject = null;
+            }
+        }
+    }
+}

VideoPlayerForm.cs

@@ -1,8 +1,10 @@
 using System.IO; // For StreamWriter
 using System.Runtime.InteropServices;
+using System.Windows.Media;
 using DirectShowLib;
 using DBObj;
 using OverlayFormObj;
+using DualScreenDemo.Services;
 namespace DualScreenDemo
 {
     public class VideoPlayerForm : Form
@@ -67,27 +69,8 @@ namespace DualScreenDemo
         private const int GWL_EXSTYLE = -20;
         private const int WS_EX_TOPMOST = 0x00000008;
         private const uint SWP_NOZORDER = 0x0004;
-
+        private MediaServicePrimary primary = new MediaServicePrimary();
-        private IGraphBuilder graphBuilderPrimary;
+        private MediaService secondary = new MediaService();
-        private IGraphBuilder graphBuilderSecondary;
-        private IMediaControl mediaControlPrimary;
-        private IMediaControl mediaControlSecondary;
-        private static IBaseFilter videoRendererSecondary;
-        private static IBaseFilter videoRendererPrimary;
-        private IBaseFilter lavSplitterPrimary;
-        private IBaseFilter lavSplitterSecondary;
-        private IBaseFilter lavVideoDecoderPrimary;
-        private IBaseFilter lavVideoDecoderSecondary;
-        private static IBaseFilter lavAudioDecoderSecondary;
-        private IPin outputPinSecondary;
-        private static IBaseFilter audioRenderer;
-        private IVideoWindow videoWindowSecondary;
-        private IVideoWindow videoWindowPrimary;
-        private IMediaEventEx mediaEventExPrimary;
-        private IMediaEventEx mediaEventExSecondary;
-        //private int videoWidth;
-        //private int videoHeight;
-        private static bool isInitializationComplete = false;
 
         public static OverlayForm overlayForm;
         public bool isMuted = false;
@@ -102,9 +85,12 @@ namespace DualScreenDemo
         }
 
         private static Screen secondMonitor;
+        private int newWidth;
+        private int newHeight;
 
         public VideoPlayerForm()
         {
+            Lold();
             Instance = this;
             // this.DoubleBuffered = true;
             this.Load += VideoPlayerForm_Load;
@@ -112,10 +98,35 @@ namespace DualScreenDemo
             this.FormClosing += VideoPlayerForm_FormClosing;
             InitializeOverlayForm(secondMonitor);
             BringOverlayToFront();
-
             HttpServer.OnDisplayBarrage += DisplayBarrageOnOverlay;
             MonitorMediaEvents();
         }
+        void Lold(){
+            int designWidth = 1620;
+            int designHeight = 1080;
+
+            int actualWidth = PrimaryForm.Instance.primaryScreenPanel.Width;
+            int actualHeight = PrimaryForm.Instance.primaryScreenPanel.Height;
+
+            // 等比例縮放（不會超出，fit）
+            float scaleX = (float)actualWidth / designWidth;
+            float scaleY = (float)actualHeight / designHeight;
+            float scale = Math.Min(scaleX, scaleY);
+
+            // 計算縮放後的尺寸（但起點仍是 0,0）
+            newWidth = (int)(designWidth * scale);
+            newHeight = (int)(designHeight * scale);
+
+            // trash location with trash flexible of screen size.
+            if (actualWidth == 1024)
+            {
+                newWidth = (int)(newWidth * 0.84f);
+            }
+            else if (actualWidth == 1440)
+            {
+                newWidth = (int)(newWidth * 0.9f);
+            }
+        }
 
         private void VideoPlayerForm_Load(object sender, EventArgs e)
         {
@@ -128,38 +139,27 @@ namespace DualScreenDemo
                 this.Size = secondMonitor.Bounds.Size;
                 // this.DoubleBuffered = true;
             }
-            CheckMonitor();
+            Screen screen = Screen.FromHandle(this.Handle);
         }
 
         private void VideoPlayerForm_Shown(object sender, EventArgs e)
         {
             int hr = CoInitializeEx(IntPtr.Zero, COINIT.APARTMENTTHREADED);
-            if (hr < 0) {
+            if (hr < 0)
+            {
                 Console.WriteLine("Failed to initialize COM library.");
                 return;
             }
-
+            else
-            InitializeGraphBuilderPrimary();
+            { 
-            InitializeGraphBuilderSecondary();
+                PlayNextSong();
+            }
         }
 
         private void VideoPlayerForm_FormClosing(object sender, FormClosingEventArgs e)
         {
-            if (videoWindowPrimary != null)
+            primary.VideoPlayerFormClosing();
-            {
+            secondary.VideoPlayerFormClosing();
-                videoWindowPrimary.put_Visible(OABool.False);
-                videoWindowPrimary.put_Owner(IntPtr.Zero);
-                Marshal.ReleaseComObject(videoWindowPrimary);
-                videoWindowPrimary = null;
-            }
-
-            if (videoWindowSecondary != null)
-            {
-                videoWindowSecondary.put_Visible(OABool.False);
-                videoWindowSecondary.put_Owner(IntPtr.Zero);
-                Marshal.ReleaseComObject(videoWindowSecondary);
-                videoWindowSecondary = null;
-            }
             // 清理COM
             CoUninitialize();
         }
@@ -178,175 +178,6 @@ namespace DualScreenDemo
             MULTITHREADED = 0x0
         }
         
-        private void InitializeGraphBuilderPrimary()
-        {
-            graphBuilderPrimary = (IGraphBuilder)new FilterGraph();
-            if (graphBuilderPrimary == null)
-            {
-                Console.WriteLine("Failed to create FilterGraph for primary monitor.");
-                throw new Exception("Failed to create FilterGraph for primary monitor.");
-            }
-            try
-            {
-                lavSplitterPrimary = AddFilterByClsid(graphBuilderPrimary, "LAV Splitter", Clsid.LAVSplitter);
-
-                lavVideoDecoderPrimary = AddFilterByClsid(graphBuilderPrimary, "LAV Video Decoder", Clsid.LAVVideoDecoder);
-
-                videoRendererPrimary = AddFilterByClsid(graphBuilderPrimary, "Primary Video Renderer", Clsid.VideoRenderer);
-                int hr = graphBuilderPrimary.AddFilter(videoRendererPrimary, "Primary Video Renderer");
-                DsError.ThrowExceptionForHR(hr);
-
-                mediaControlPrimary = (IMediaControl)graphBuilderPrimary;
-                if (mediaControlPrimary == null)
-                {
-                    Console.WriteLine("Failed to get Media Control for primary monitor.");
-                    return;
-                }
-
-                mediaEventExPrimary = (IMediaEventEx)graphBuilderPrimary;
-                if (mediaEventExPrimary == null)
-                {
-                    Console.WriteLine("Failed to get Media Event Ex for primary monitor.");
-                    return;
-                }
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine("Error initializing graph builder for primary monitor: " + ex.Message);
-            }
-        }
-
-        private void InitializeGraphBuilderSecondary()
-        {
-            graphBuilderSecondary = (IGraphBuilder)new FilterGraph();
-            if (graphBuilderSecondary == null)
-            {
-                Console.WriteLine("Failed to create FilterGraph");
-                throw new Exception("Failed to create FilterGraph");
-            }
-            try
-            {
-                lavSplitterSecondary = AddFilterByClsid(graphBuilderSecondary, "LAV Splitter", Clsid.LAVSplitter);
-                lavVideoDecoderSecondary = AddFilterByClsid(graphBuilderSecondary, "LAV Video Decoder", Clsid.LAVVideoDecoder);
-                lavAudioDecoderSecondary = AddFilterByClsid(graphBuilderSecondary, "LAV Audio Decoder", Clsid.LAVAudioDecoder);
-                outputPinSecondary = FindPin(lavAudioDecoderSecondary, "Output");
-                videoRendererSecondary = AddFilterByClsid(graphBuilderSecondary, "Secondary Video Renderer", Clsid.VideoRenderer);
-                if (videoRendererSecondary == null)
-                {
-                    Console.WriteLine("Failed to initialize Secondary Video Renderer.");
-                    return;
-                }
-                int hr = graphBuilderSecondary.AddFilter(videoRendererSecondary, "Secondary Video Renderer");
-                DsError.ThrowExceptionForHR(hr);
-                var clsidAudioRenderer = new Guid("79376820-07D0-11CF-A24D-0020AFD79767");  // CLSID for DirectSound Renderer
-                audioRenderer = (IBaseFilter)Activator.CreateInstance(Type.GetTypeFromCLSID(clsidAudioRenderer));
-                hr = graphBuilderSecondary.AddFilter(audioRenderer, "Default DirectSound Device");
-                DsError.ThrowExceptionForHR(hr);
-
-                mediaControlSecondary = (IMediaControl)graphBuilderSecondary;
-                if (mediaControlSecondary == null)
-                {
-                    Console.WriteLine("Failed to get Media Control");
-                    return;
-                }
-                mediaEventExSecondary = (IMediaEventEx)graphBuilderSecondary;
-                if (mediaEventExSecondary == null)
-                {
-                    Console.WriteLine("Failed to get Media Event Ex");
-                    return;
-                }
-
-                isInitializationComplete = true;
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine("Error initializing graph builder with second monitor: " + ex.Message);
-            }
-        }
-
-        private int ConnectFilters(IGraphBuilder graphBuilder, IBaseFilter sourceFilter, string sourcePinName, IBaseFilter destFilter, string destPinName)
-        {
-            IPin outPin = FindPin(sourceFilter, sourcePinName);
-            IPin inPin = FindPin(destFilter, destPinName);
-            if (outPin == null || inPin == null)
-            {
-                Console.WriteLine(String.Format("Cannot find pins: {0} or {1}", sourcePinName, destPinName));
-                return -1;
-            }
-            int hr = graphBuilder.Connect(outPin, inPin);
-            return hr;
-        }
-
-        private IPin FindPin(IBaseFilter filter, string pinName)
-        {
-            IEnumPins enumPins;
-            IPin[] pins = new IPin[1];
-
-            filter.EnumPins(out enumPins);
-            enumPins.Reset();
-
-            while (enumPins.Next(1, pins, IntPtr.Zero) == 0)
-            {
-                PinInfo pinInfo;
-                pins[0].QueryPinInfo(out pinInfo);
-                Console.WriteLine(pinInfo);
-
-                if (pinInfo.name == pinName)
-                {
-                    return pins[0];
-                }
-            }
-            return null;
-        }
-
-        private void CheckMonitor()
-        {
-            Screen screen = Screen.FromHandle(this.Handle);
-        }
-
-        private static IBaseFilter AddFilterByClsid(IGraphBuilder graphBuilder, string name, Guid clsid)
-        {
-            try
-            {
-                // 获取 CLSID 对应的类型
-                Type filterType = Type.GetTypeFromCLSID(clsid);
-                //Console.WriteLine($"Attempting to create filter of type: {filterType.FullName}");
-
-                // 创建实例
-                object filterObject = Activator.CreateInstance(filterType);
-
-                // 尝试转换为 IBaseFilter
-                IBaseFilter filter = filterObject as IBaseFilter;
-
-                if (filter == null)
-                {
-                    // 如果转换失败，使用 IUnknown 获取并转换为 IBaseFilter
-                    IntPtr comObjectPointer = Marshal.GetIUnknownForObject(filterObject);
-                    filter = (IBaseFilter)Marshal.GetObjectForIUnknown(comObjectPointer);
-                    // Console.WriteLine($"Successfully converted COM object to IBaseFilter via IUnknown.");
-                }
-                else
-                {
-                    // Console.WriteLine($"Successfully created IBaseFilter directly.");
-                }
-
-                // 添加过滤器到图形构建器
-                int hr = graphBuilder.AddFilter(filter, name);
-                if (hr != 0)
-                {
-                    // Console.WriteLine($"Failed to add filter {name} with CLSID {clsid}, HRESULT: {hr}");
-                }
-
-                DsError.ThrowExceptionForHR(hr);
-                // Console.WriteLine($"Successfully added filter {name} with CLSID {clsid}");
-                return filter;
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine($"Exception in AddFilterByClsid: {ex.Message}");
-                throw; // Rethrow the exception to handle it further up the call stack
-            }
-        }
         // 同步畫面事件
         public void SyncToPrimaryMonitor()
         {
@@ -382,53 +213,7 @@ namespace DualScreenDemo
             PrimaryForm.Instance.syncMicDownButton.BringToFront();
             PrimaryForm.Instance.syncCloseButton.Visible = true;
             PrimaryForm.Instance.syncCloseButton.BringToFront();
-            try
-            {
-                if (videoRendererPrimary == null)
-                {
-                    // Console.WriteLine("VMR9 is not initialized.");
-                    return;
-                }
-                int designWidth = 1620;
-                int designHeight = 1080;
 
-                int actualWidth = PrimaryForm.Instance.primaryScreenPanel.Width;
-                int actualHeight = PrimaryForm.Instance.primaryScreenPanel.Height;
-
-                // 等比例縮放（不會超出，fit）
-                float scaleX = (float)actualWidth / designWidth;
-                float scaleY = (float)actualHeight / designHeight;
-                float scale = Math.Min(scaleX, scaleY);
-
-                // 計算縮放後的尺寸（但起點仍是 0,0）
-                int newWidth = (int)(designWidth * scale);
-                int newHeight = (int)(designHeight * scale);
-
-                // trash location with trash flexible of screen size.
-                if (actualWidth == 1024)
-                {
-                    newWidth = (int)(newWidth * 0.84f);
-                }
-                else if (actualWidth == 1440)
-                {
-                    newWidth = (int)(newWidth * 0.9f);
-                }
-                videoWindowPrimary = (IVideoWindow)videoRendererPrimary;
-                videoWindowPrimary.put_Owner(PrimaryForm.Instance.primaryScreenPanel.Handle);
-                videoWindowPrimary.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipChildren);
-
-                // ⬅ 左上角對齊（固定從 0,0 開始）
-                videoWindowPrimary.SetWindowPosition(0, 0, newWidth, newHeight);
-
-                videoWindowPrimary.put_Visible(OABool.True);
-
-                // Console.WriteLine("Video window configured successfully.");
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine(String.Format("Error syncing to primary monitor: {0}", ex.Message));
-                MessageBox.Show(String.Format("Error syncing to primary monitor: {0}", ex.Message));
-            }
         }
         public void ClosePrimaryScreenPanel()
         {
@@ -447,12 +232,6 @@ namespace DualScreenDemo
                 PrimaryForm.Instance.syncMicUpButton.Visible = false;
                 PrimaryForm.Instance.syncMicDownButton.Visible = false;
                 PrimaryForm.Instance.syncCloseButton.Visible = false;
-                if (videoWindowPrimary != null)
-                {
-                    videoWindowPrimary.put_Owner(PrimaryForm.Instance.primaryScreenPanel.Handle); // 绑定到主屏幕的特定区域
-                    videoWindowPrimary.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipChildren | WindowStyle.ClipSiblings);
-                    videoWindowPrimary.put_Visible(OABool.False); // 初始化时隐藏
-                }
                 IsSyncToPrimaryMonitor = false;
             }
             catch (Exception ex)
@@ -483,15 +262,10 @@ namespace DualScreenDemo
         public async Task PlayNextSong()
         {
             // 等待初始化完成（例如播放器、串口等資源尚未就緒時）
-            while (!isInitializationComplete)
-            {
-                await Task.Delay(100);
-            }
-            StopAndReleaseResources();
-            await Task.Delay(100);
             Console.WriteLine("開始播放下一首歌曲...");
             var songToPlay = SongList.Next();
-            if (!songToPlay.isPublicSong) {
+            if (!songToPlay.isPublicSong)
+            {
                 // 若是使用者點播模式，先送出升Key的串口指令
                 if (SerialPortManager.mySerialPort != null && SerialPortManager.mySerialPort.IsOpen)
                 {
@@ -512,32 +286,49 @@ namespace DualScreenDemo
             // 隱藏「暫停中」標籤
             overlayForm.HidePauseLabel();
 
+            await _InitializeAndPlayMedia(pathToPlay);
             
+            
+        }
+        public async Task ReplayCurrentSong()
+        {
+            var songToPlay = SongList.Current();
+            var pathToPlay = songToPlay.getFile();
+            // UpdateMarqueeTextForCurrentSong(songToPlay);
+            await _InitializeAndPlayMedia(pathToPlay);
+        }
+        private async Task _InitializeAndPlayMedia(string pathToPlay)
+        {
             try
             {
-                // 確保在UI線程上執行COM對象操作
+                if (InvokeRequired)
-                if (this.InvokeRequired)
+                {
-                    this.Invoke(new Action(async () => { await InitializeAndPlayMedia(pathToPlay); }));
+                    await InvokeAsync(() => InitializeAndPlayMedia(pathToPlay));
+                }
                 else
+                {
                     await InitializeAndPlayMedia(pathToPlay);
                 }
+            }
             catch (Exception ex)
             {
                 Console.WriteLine($"播放時發生錯誤: {ex.Message}");
-                // 嘗試重新初始化並重播
+                await RetryInitializeAndPlayMedia(pathToPlay);
+            }
+        }
+
+        private async Task RetryInitializeAndPlayMedia(string path)
+        {
             try
             {
-                    await Task.Delay(100);
-                    StopAndReleaseResources();
-                    await Task.Delay(100);
-
-                    // 重新初始化 COM
                 int hr = CoInitializeEx(IntPtr.Zero, COINIT.APARTMENTTHREADED);
                 if (hr >= 0)
                 {
-                        InitializeGraphBuilderPrimary();
+                    await InitializeAndPlayMedia(path);
-                        InitializeGraphBuilderSecondary();
+                }
-                        await InitializeAndPlayMedia(pathToPlay);
+                else
+                {
+                    Console.WriteLine("CoInitializeEx 失敗，無法重新初始化 COM。");
                 }
             }
             catch (Exception retryEx)
@@ -545,248 +336,46 @@ namespace DualScreenDemo
                 Console.WriteLine($"重試播放時發生錯誤: {retryEx.Message}");
             }
         }
+
+        // 通用的 async invoke 方法（避免重複寫）
+        private Task InvokeAsync(Func<Task> func)
+        {
+            var tcs = new TaskCompletionSource<bool>();
+            BeginInvoke(async () =>
+            {
+                try
+                {
+                    await func();
+                    tcs.SetResult(true);
+                }
+                catch (Exception ex)
+                {
+                    tcs.SetException(ex);
+                }
+            });
+            return tcs.Task;
         }
 
-        private async Task InitializeAndPlayMedia(string pathToPlay)
+        private Task InitializeAndPlayMedia(string pathToPlay)
         {
-
-            if (videoWindowPrimary != null) videoWindowPrimary.put_Visible(OABool.False);
-            if (videoWindowSecondary != null) videoWindowSecondary.put_Visible(OABool.False);
-            
-            // 清理並初始化 DirectShow 圖表
-            RemoveAllFilters(graphBuilderPrimary);
-            RemoveAllFilters(graphBuilderSecondary);
-            InitializeGraphBuilderPrimary();
-            InitializeGraphBuilderSecondary();
-
             // 渲染媒體文件
-            RenderMediaFilePrimary(pathToPlay);
+            primary.RenderMediaFile(pathToPlay,PrimaryForm.Instance.primaryScreenPanel.Handle,newWidth,newHeight);
-            RenderMediaFileSecondary(pathToPlay);
+            secondary.RenderMediaFile(pathToPlay,this.Handle,secondMonitor.Bounds.Width,secondMonitor.Bounds.Height);
-            // 綁定視頻窗口到副屏幕
+
-            videoWindowSecondary = (IVideoWindow)videoRendererSecondary;
-            if (videoWindowSecondary != null)
-            {
-                videoWindowSecondary.put_Owner(this.Handle);
-                videoWindowSecondary.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipChildren | WindowStyle.ClipSiblings);
-                videoWindowSecondary.SetWindowPosition(0, 0, secondMonitor.Bounds.Width, secondMonitor.Bounds.Height);
-                await Task.Delay(100); // 給予視窗一些時間進行設置
-                videoWindowSecondary.put_Visible(OABool.True);
-            }
             // 音量處理
             if (isMuted)
             {
                 SetVolume(-10000);
             }
-            // 開始播放
-            if (mediaControlPrimary != null) mediaControlPrimary.Run();
-            if (mediaControlSecondary != null) mediaControlSecondary.Run();
-
-            if (isSyncToPrimaryMonitor) SyncToPrimaryMonitor();
-        }
-
-        public void ReplayCurrentSong()
-        {
-            var songToPlay = SongList.Current();
-            var pathToPlay = songToPlay.getFile();
-            // UpdateMarqueeTextForCurrentSong(songToPlay);
-
-            try
-            {
-                if (mediaControlPrimary != null) mediaControlPrimary.Stop();
-                if (mediaControlSecondary != null) mediaControlSecondary.Stop();
-                if (videoWindowPrimary != null) videoWindowPrimary.put_Visible(OABool.False); // 隐藏主屏幕窗口，避免干扰
-                if (videoWindowSecondary != null) videoWindowSecondary.put_Visible(OABool.False); // 隐藏副屏幕窗口，避免闪烁
-                
-                // 清理并初始化 DirectShow 图表
-                RemoveAllFilters(graphBuilderPrimary);
-                RemoveAllFilters(graphBuilderSecondary);
-                InitializeGraphBuilderPrimary();
-                InitializeGraphBuilderSecondary();
-
-                // 渲染媒体文件
-                RenderMediaFilePrimary(pathToPlay);
-                RenderMediaFileSecondary(pathToPlay);
-
-                // 绑定视频窗口到副屏幕
-                videoWindowSecondary = videoRendererSecondary as IVideoWindow;
-                if (videoWindowSecondary != null)
-                {
-                    videoWindowSecondary.put_Owner(this.Handle); // 副屏幕窗口句柄
-                    videoWindowSecondary.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipChildren | WindowStyle.ClipSiblings);
-                    videoWindowSecondary.SetWindowPosition(0, 0, secondMonitor.Bounds.Width, secondMonitor.Bounds.Height);
-                    videoWindowSecondary.put_Visible(OABool.True); // 显示窗口
-                }
-
-                // 音量处理
-                if (isMuted) SetVolume(-10000); // 静音
-
-                // 开始播放
-                mediaControlPrimary?.Run();
-                mediaControlSecondary?.Run();
-
-                if (isSyncToPrimaryMonitor) SyncToPrimaryMonitor();
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine(String.Format("Error replaying song: {0}", ex.Message));
-                MessageBox.Show(String.Format("Error replaying song: {0}", ex.Message));
-            }
-        }
-
-
-        public void StopAndReleaseResources()
-        {
-            try
-            {
-                if (mediaControlPrimary != null)
-                {
-                    mediaControlPrimary.Stop();
-                    Marshal.ReleaseComObject(mediaControlPrimary);
-                    mediaControlPrimary = null;
-                }
-                if (mediaControlSecondary != null)
-                {
-                    mediaControlSecondary.Stop();
-                    Marshal.ReleaseComObject(mediaControlSecondary);
-                    mediaControlSecondary = null;
-                }
-
-                // 释放其他资源
-                if (lavSplitterPrimary != null)
-                {
-                    Marshal.ReleaseComObject(lavSplitterPrimary);
-                    lavSplitterPrimary = null;
-                }
-                if (lavSplitterSecondary != null)
-                {
-                    Marshal.ReleaseComObject(lavSplitterSecondary);
-                    lavSplitterSecondary = null;
-                }
-                if (lavVideoDecoderPrimary != null)
-                {
-                    Marshal.ReleaseComObject(lavVideoDecoderPrimary);
-                    lavVideoDecoderPrimary = null;
-                }
-                if (lavVideoDecoderSecondary != null)
-                {
-                    Marshal.ReleaseComObject(lavVideoDecoderSecondary);
-                    lavVideoDecoderSecondary = null;
-                }
-                if (lavAudioDecoderSecondary != null)
-                {
-                    Marshal.ReleaseComObject(lavAudioDecoderSecondary);
-                    lavAudioDecoderSecondary = null;
-                }
-                if (outputPinSecondary != null)
-                {
-                    Marshal.ReleaseComObject(outputPinSecondary);
-                    outputPinSecondary = null;
-                }
-
-                // 强制进行垃圾回收
-                GC.Collect();
-                GC.WaitForPendingFinalizers();
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine($"釋放資源時發生錯誤: {ex.Message}");
-            }
-        }
-
-        public void RenderMediaFilePrimary(string filePath)
-        {
-            try {
-                int hr;
-                IBaseFilter sourceFilter;
-                hr = graphBuilderPrimary.AddSourceFilter(filePath, "Source", out sourceFilter);
-                DsError.ThrowExceptionForHR(hr);
-                videoWindowPrimary = (IVideoWindow)videoRendererPrimary;
-                videoWindowPrimary.put_Visible(OABool.False);
-                hr = ConnectFilters(graphBuilderPrimary, sourceFilter, "Output", lavSplitterPrimary, "Input");
-                DsError.ThrowExceptionForHR(hr);
-                hr = ConnectFilters(graphBuilderPrimary, lavSplitterPrimary, "Video", lavVideoDecoderPrimary, "Input");
-                DsError.ThrowExceptionForHR(hr);
-                hr = ConnectFilters(graphBuilderPrimary, lavVideoDecoderPrimary, "Output", videoRendererPrimary, "VMR Input0");
-                DsError.ThrowExceptionForHR(hr);
-                videoWindowPrimary = (IVideoWindow)videoRendererPrimary;
-                videoWindowPrimary.put_Owner(PrimaryForm.Instance.primaryScreenPanel.Handle); // 设置为 primaryScreenPanel 的句柄
-                videoWindowPrimary.put_WindowStyle(WindowStyle.Child | WindowStyle.ClipChildren);
-                videoWindowPrimary.SetWindowPosition(0, 0, 1500, 1000); // 调整视频窗口大小以填满黑色区域
-                //Task.Delay(100).Wait();
-                videoWindowPrimary.put_Visible(OABool.True);
-                SaveGraphFile(graphBuilderPrimary, "primary_graph.grf");
-                Console.WriteLine("主檔案 " + ((hr == 0) ? "成功" : "失敗"));
-
-            } catch (Exception ex) {
-                Console.WriteLine("主檔案失敗2: " + ex.Message);
-            }
-        }
-
-        public void RenderMediaFileSecondary(string filePath)
-        {
-            int hr = graphBuilderSecondary.RenderFile(filePath, null);
-            DsError.ThrowExceptionForHR(hr);
-            SaveGraphFile(graphBuilderSecondary, "secondary_graph.grf");
-            if (hr == 0)
-            {
-                Console.WriteLine("Secondary File rendered successfully.");
-                SetAudioTrackTo(1);
-            }
             else
             {
-                Console.WriteLine("Failed to render secondary file.");
+                SetVolume(previousVolume);
             }
-        }
+            // 開始播放
-
+            primary.Run();
-        public static void SaveGraphFile(IGraphBuilder graph, string filename)
+            secondary.Run();
-        {
+            if (isSyncToPrimaryMonitor) SyncToPrimaryMonitor();
-            var writer = new StreamWriter(filename);
+            return Task.CompletedTask;
-            IFilterGraph2 graph2 = graph as IFilterGraph2;
-
-            if (graph2 != null)
-            {
-                IEnumFilters enumFilters;
-                graph2.EnumFilters(out enumFilters);
-
-                enumFilters.Reset();
-                IBaseFilter[] filters = new IBaseFilter[1];
-                while (enumFilters.Next(1, filters, IntPtr.Zero) == 0)
-                {
-                    FilterInfo filterInfo;
-                    filters[0].QueryFilterInfo(out filterInfo);
-                    writer.WriteLine("Filter: " + filterInfo.achName);
-                    IEnumPins enumPins;
-                    filters[0].EnumPins(out enumPins);
-                    enumPins.Reset();
-                    IPin[] pins = new IPin[1];
-                    while (enumPins.Next(1, pins, IntPtr.Zero) == 0)
-                    {
-                        PinInfo pinInfo;
-                        pins[0].QueryPinInfo(out pinInfo);
-                        writer.WriteLine("  Pin: " + pinInfo.name);
-                        Marshal.ReleaseComObject(pins[0]);
-                    }
-                    Marshal.ReleaseComObject(enumPins);
-                    Marshal.ReleaseComObject(filters[0]);
-                }
-
-                Marshal.ReleaseComObject(enumFilters);
-            }
-
-            writer.Close();
-        }
-
-        private static void RemoveAllFilters(IGraphBuilder graph)
-        {
-            IEnumFilters enumFilters;
-            graph.EnumFilters(out enumFilters);
-            IBaseFilter[] filters = new IBaseFilter[1];
-            while (enumFilters.Next(1, filters, IntPtr.Zero) == 0)
-            {
-                graph.RemoveFilter(filters[0]);
-                Marshal.ReleaseComObject(filters[0]);
-            }
-            Marshal.ReleaseComObject(enumFilters);
         }
 
         private void InitializeOverlayForm(Screen secondaryScreen)
@@ -805,67 +394,31 @@ namespace DualScreenDemo
             this.Focus();
         }
 
-        private bool isPlayingNext = false;
-
         public void MonitorMediaEvents()
         {
-            Console.WriteLine("開始監聽媒體事件...");
-
             Task.Run(async () =>
             {
+                Console.WriteLine("開始監聽媒體事件...");
                 while (true)
                 {
                     try
                     {
-                        if (mediaControlSecondary == null)
+                        bool isAtEnd = secondary.isAtEnd() ;
+                        if (isAtEnd && !isPaused)
                         {
-                            await Task.Delay(500);
-                            continue;
-                        }
-
-                        // 只檢查播放進度
-                        IMediaSeeking mediaSeekingSecondary = graphBuilderSecondary as IMediaSeeking;
-                        if (mediaSeekingSecondary != null && !isPlayingNext)
-                        {
-                            long currentPosition = 0;
-                            long duration = 0;
-
-                            if (mediaSeekingSecondary.GetCurrentPosition(out currentPosition) >= 0 &&
-                                mediaSeekingSecondary.GetDuration(out duration) >= 0)
-                            {
-                                double currentSeconds = currentPosition / 10000000.0;
-                                double durationSeconds = duration / 10000000.0;
-
-                                // 添加更严格的结束条件判断
-                                bool isAtEnd = durationSeconds > 0 && currentSeconds > 0 &&
-                                             Math.Abs(currentSeconds - durationSeconds) < 0.1 && // 确保真的到了结尾
-                                             !isPaused;
-
-                                if (isAtEnd && !isPlayingNext)
-                                {
-                                    Console.WriteLine($"檢測到歌曲結束 - 當前位置: {currentSeconds:F2}秒, 總時長: {durationSeconds:F2}秒");
-
-                                    
                             BeginInvoke(new Action(async () =>
                             {
-                                        StopAndReleaseResources();
-                                        await Task.Delay(100);  // 给予足够的时间释放资源
                                 await PlayNextSong();
                             }));
-                                    
-                                }
-                            }
                         }
                     }
                     catch (Exception ex)
                     {
                         Console.WriteLine($"監控媒體事件時發生錯誤: {ex.Message}");
-                        isPlayingNext = false;
-
                         await Task.Delay(1000);
                     }
 
-                    await Task.Delay(500);
+                    await Task.Delay(1000);
                 }
             });
         }
@@ -886,28 +439,22 @@ namespace DualScreenDemo
 
         public void Play()
         {
-            if (mediaControlPrimary != null)
+            primary.Run();
-                mediaControlPrimary.Run();
+            secondary.Run();
-            if (mediaControlSecondary != null)
-                mediaControlSecondary.Run();
             isPaused = false;
             OverlayForm.MainForm.HidePauseLabel();
         }
 
         public void Stop()
         {
-            if (mediaControlPrimary != null)
+            primary.Stop();
-                mediaControlPrimary.Stop();
+            secondary.Stop();
-            if (mediaControlSecondary != null)
-                mediaControlSecondary.Stop();
         }
 
         public void Pause()
         {
-            if (mediaControlPrimary != null)
+            primary.Pause();
-                mediaControlPrimary.Pause();
+            secondary.Pause();
-            if (mediaControlSecondary != null)
-                mediaControlSecondary.Pause();
             isPaused = true;
             OverlayForm.MainForm.ShowPauseLabel();
         }
@@ -946,149 +493,17 @@ namespace DualScreenDemo
         }
         public void SetVolume(int volume)
         {
-            if (audioRenderer != null)
+            secondary.SetVolume(volume);
-            {
-                IBasicAudio basicAudio = audioRenderer as IBasicAudio;
-                if (basicAudio != null)
-                {
-                    basicAudio.put_Volume(volume);
-                }
-            }
         }
         public int GetVolume()
         {
-            if (audioRenderer != null)
+            return secondary.GetVolume();
-            {
-                IBasicAudio basicAudio = audioRenderer as IBasicAudio;
-                if (basicAudio != null)
-                {
-                    int volume;
-                    basicAudio.get_Volume(out volume);
-                    return volume;
         }
-            }
+        
-            return -10000;
-        }
-        private bool isVocalRemoved = false;
         public void ToggleVocalRemoval()
         {
-            try
+            OverlayForm.MainForm.ShowTopRightLabelTime(secondary.ToggleVocalRemoval() ? "無人聲" : "有人聲");
-            {
-                IAMStreamSelect streamSelect = lavSplitterSecondary as IAMStreamSelect;
-
-                if (streamSelect != null)
-                {
-                    int trackCount;
-                    if (streamSelect.Count(out trackCount) == 0 && trackCount > 0)
-                    {
-                        int currentTrackIndex = -1;
-                        int audioTrack1 = -1;
-                        int audioTrack2 = -1;
-
-                        for (int i = 0; i < trackCount; i++)
-                        {
-                            // 獲取音軌信息
-                            AMMediaType mediaType;
-                            AMStreamSelectInfoFlags flags;
-                            int lcid, dwGroup;
-                            string name;
-                            object pObject, pUnk;
-
-                            streamSelect.Info(i, out mediaType, out flags, out lcid, out dwGroup, out name, out pObject, out pUnk);
-
-                            if (mediaType.majorType == MediaType.Audio)
-                            {
-                                if (audioTrack1 == -1)
-                                {
-                                    audioTrack1 = i;
-                                } else if (audioTrack2 == -1) {
-                                    audioTrack2 = i;
         }
-
-                                if ((flags & AMStreamSelectInfoFlags.Enabled) != 0)
-                                {
-                                    currentTrackIndex = i;
-                                }
-                            }
-
-                            DsUtils.FreeAMMediaType(mediaType);
-                        }
-
-                        // 切換音軌
-                        if (currentTrackIndex == audioTrack1 && audioTrack2 != -1)
-                        {
-                            streamSelect.Enable(audioTrack2, AMStreamSelectEnableFlags.Enable);
-                            isVocalRemoved = true;
-                        }
-                        else if (currentTrackIndex == audioTrack2 && audioTrack1 != -1)
-                        {
-                            streamSelect.Enable(audioTrack1, AMStreamSelectEnableFlags.Enable);
-                            isVocalRemoved = false;
-                        }
-                        //OverlayForm.MainForm.ShowOriginalSongLabel();
-                        string labelText = isVocalRemoved ? "無人聲" : "有人聲";
-                        // 显示标签
-                        // 修改成新標籤
-                        OverlayForm.MainForm.ShowTopRightLabel(labelText);
-                        //await Task.Delay(3000);
-                        // 隐藏标签
-                        //OverlayForm.MainForm.HideOriginalSongLabel();
-                    }
-                }
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine(ex.Message);
-            }
-        }
-
-        public void SetAudioTrackTo(int trackIndex)
-        {
-            try
-            {
-                IAMStreamSelect streamSelect = lavSplitterSecondary as IAMStreamSelect;
-
-                if (streamSelect != null)
-                {
-                    int trackCount;
-                    if (streamSelect.Count(out trackCount) == 0 && trackCount > 0)
-                    {
-                        int audioTrackIndex = -1;
-
-                        for (int i = 0; i < trackCount; i++)
-                        {
-                            AMMediaType mediaType;
-                            AMStreamSelectInfoFlags flags;
-                            int lcid, dwGroup;
-                            string name;
-                            object pObject, pUnk;
-
-                            streamSelect.Info(i, out mediaType, out flags, out lcid, out dwGroup, out name, out pObject, out pUnk);
-
-                            if (mediaType.majorType == MediaType.Audio)
-                            {
-                                audioTrackIndex++;
-                                if (audioTrackIndex == trackIndex)
-                                {
-                                    streamSelect.Enable(i, AMStreamSelectEnableFlags.Enable);
-                                }
-                                else
-                                {
-                                    streamSelect.Enable(i, AMStreamSelectEnableFlags.DisableAll);
-                                }
-                            }
-
-                            DsUtils.FreeAMMediaType(mediaType);
-                        }
-                    }
-                }
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine(ex.Message);
-            }
-        }
-
     }
 }