202508151141
調整 VLC 雙螢幕同步顯示
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@ -5,142 +5,67 @@ namespace DualScreenDemo.Services
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public class MediaService : IDisposable
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{
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private readonly LibVLC _libVLC;
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private readonly MediaPlayer _mediaPlayerPrimary;
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private readonly MediaPlayer _mediaPlayerSecondary;
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private readonly MediaPlayer _mediaPlayer;
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private Media? _media;
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private Media? _mediaNoAudio;
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private bool _disposed;
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public MediaService()
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public MediaService(nint handle)
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{
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Core.Initialize();
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_libVLC = new LibVLC(
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"--aout=directsound",
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//"--avcodec-hw=dxva2",
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"--network-caching=300",
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"--file-caching=300",
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"--audio-time-stretch"
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"--audio-time-stretch",
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"--video-filter=clone",
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$"--clone-views={handle}" // 這是 clone 的目標視窗
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);
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_mediaPlayerPrimary = new MediaPlayer(_libVLC);
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_mediaPlayerSecondary = new MediaPlayer(_libVLC);
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_mediaPlayer = new MediaPlayer(_libVLC);
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}
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#region Player Setup
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public void SetVideoFormPrimary(nint handle, int width, int height)
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public void SetVideoOutput(nint handle, int width, int height)
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{
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_mediaPlayerPrimary.Hwnd = handle;
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_mediaPlayerPrimary.AspectRatio = $"{width}:{height}";
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_mediaPlayerPrimary.Scale = 0; // 保持原比例
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}
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public void SetVideoFormSecondary(nint handle, int width, int height)
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{
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_mediaPlayerSecondary.Hwnd = handle;
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_mediaPlayerSecondary.AspectRatio = $"{width}:{height}";
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_mediaPlayerSecondary.Scale = 0;
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_mediaPlayer.Hwnd = handle;
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_mediaPlayer.AspectRatio = $"{width}:{height}";
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_mediaPlayer.Scale = 0;
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}
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#endregion
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#region Playback
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public MediaPlayer PrimaryPlayer => _mediaPlayerPrimary;
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public MediaPlayer SecondaryPlayer => _mediaPlayerSecondary;
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public bool IsPlaying => _mediaPlayerSecondary.IsPlaying;
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public MediaPlayer Player => _mediaPlayer;
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public bool IsPlaying => _mediaPlayer.IsPlaying;
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public bool IsAtEnd()
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{
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var duration = _mediaPlayerSecondary.Media?.Duration ?? 0;
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var time = _mediaPlayerSecondary.Time;
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var duration = _mediaPlayer.Media?.Duration ?? 0;
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var time = _mediaPlayer.Time;
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return duration > 0 && Math.Abs(duration - time) < 1000;
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}
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public void LoadMedia(string filePath, int audioTrackIndex = 0)
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{
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_mediaPlayerPrimary.Pause();
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_mediaPlayerSecondary.Pause();
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_mediaPlayer.Stop();
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_media?.Dispose();
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// 建立一個完整有聲音的 Media 給 secondary 播放器
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_media = new Media(_libVLC, filePath, FromType.FromPath);
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_media.AddOption(":audio-output=directsound");
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_media.AddOption($":audio-track={audioTrackIndex}");
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// 同時準備給 primary 播放器用的無聲音版本 Media
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_mediaNoAudio?.Dispose();
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_mediaNoAudio = new Media(_libVLC, filePath, FromType.FromPath);
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_mediaNoAudio.AddOption(":no-audio"); // 關閉聲音輸出
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}
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public async Task PlayAsync()
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public void Play()
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{
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if (_media == null || _mediaNoAudio == null) return;
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_mediaPlayerPrimary.Play(_mediaNoAudio); // 播放無聲音版本
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await Task.Delay(100);
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_mediaPlayerSecondary.Play(_media); // 播放有聲音版本
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await SyncPlayersAsync();
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}
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public async Task Play()
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{
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_mediaPlayerPrimary.Play(); // 播放無聲音版本
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await Task.Delay(100);
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_mediaPlayerSecondary.Play(); // 播放有聲音版本
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await SyncPlayersAsync();
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}
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public void Pause()
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{
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_mediaPlayerPrimary.Pause();
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_mediaPlayerSecondary.Pause();
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}
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public void Stop()
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{
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_mediaPlayerPrimary.Stop();
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_mediaPlayerSecondary.Stop();
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if (_media == null) return;
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_mediaPlayer.Play(_media);
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}
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public void Pause() => _mediaPlayer.Pause();
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public void Stop() => _mediaPlayer.Stop();
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#endregion
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#region Sync
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private async Task SyncPlayersAsync()
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{
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while (_mediaPlayerPrimary.IsPlaying && _mediaPlayerSecondary.IsPlaying)
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{
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var t1 = _mediaPlayerPrimary.Time;
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var t2 = _mediaPlayerSecondary.Time;
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if (Math.Abs(t1 - t2) > 100)
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_mediaPlayerSecondary.Time = t1;
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await Task.Delay(200);
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}
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}
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#endregion
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#region Mute
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public bool Mute(bool isMuted)
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{
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_mediaPlayerSecondary.Mute = isMuted;
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return _mediaPlayerSecondary.Mute;
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}
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#endregion
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#region Volume
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public void SetVolume(int volume)
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{
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_mediaPlayerPrimary.Volume = volume;
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_mediaPlayerSecondary.Volume = volume;
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}
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public int GetVolume() => _mediaPlayerSecondary?.Volume ?? 0;
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#endregion
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#region Audio Tracks
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#region Audio
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public List<TrackDescription> GetAudioTracks()
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{
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var result = new List<TrackDescription>();
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var media = _mediaPlayerSecondary.Media;
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var media = _mediaPlayer.Media;
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if (media == null) return result;
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@ -161,26 +86,29 @@ namespace DualScreenDemo.Services
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return result;
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}
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public void SetAudioTrackToAsync(int trackIndex)
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public void SetAudioTrack(int trackIndex)
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{
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var audioTracks = GetAudioTracks();
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if (trackIndex < 0 || trackIndex >= audioTracks.Count) return;
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_mediaPlayerSecondary.SetAudioTrack(audioTracks[trackIndex].Id);
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_mediaPlayer.SetAudioTrack(audioTracks[trackIndex].Id);
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}
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#endregion
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#region Volume
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public void SetVolume(int volume) => _mediaPlayer.Volume = volume;
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public int GetVolume() => _mediaPlayer.Volume;
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public bool Mute(bool isMuted) => _mediaPlayer.Mute = isMuted;
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#endregion
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#region Dispose
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public void Dispose()
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{
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if (_disposed) return;
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_mediaPlayerPrimary?.Dispose();
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_mediaPlayerSecondary?.Dispose();
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_mediaPlayer.Dispose();
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_media?.Dispose();
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_mediaNoAudio?.Dispose();
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_libVLC?.Dispose();
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_libVLC.Dispose();
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_mediaNoAudio = null;
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_media = null;
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_disposed = true;
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}
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@ -67,7 +67,7 @@ namespace DualScreenDemo
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private const int WS_EX_TOPMOST = 0x00000008;
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private const uint SWP_NOZORDER = 0x0004;
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//private MediaServicePrimary primary = new MediaServicePrimary();
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private MediaService secondary= new MediaService();
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private MediaService secondary;
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public static OverlayForm overlayForm;
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public bool isMuted = false;
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public int previousVolume = 100;
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@ -120,8 +120,9 @@ namespace DualScreenDemo
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}
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else
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{
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secondary.SetVideoFormPrimary(PrimaryForm.Instance.videoPanel.Handle,PrimaryForm.Instance.videoPanel.Width,PrimaryForm.Instance.videoPanel.Height);
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secondary.SetVideoFormSecondary(this.Handle,secondMonitor.Bounds.Width,secondMonitor.Bounds.Height);
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secondary= new MediaService(PrimaryForm.Instance.videoPanel.Handle);
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secondary.SetVideoOutput(this.Handle, secondMonitor.Bounds.Width, secondMonitor.Bounds.Height);
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PlayNextSong();
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}
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}
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@ -322,7 +323,7 @@ namespace DualScreenDemo
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// 渲染媒體文件
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secondary.LoadMedia(pathToPlay,song.isPublicSong ? 0 : 1);
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secondary.Mute(isMuted);
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secondary.PlayAsync();
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secondary.Play();
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// 音量處理
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//SetVolume(isMuted ? 0 : previousVolume);
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@ -459,7 +460,7 @@ namespace DualScreenDemo
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{
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isVocalRemoved=!isVocalRemoved;
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int trackIndex = isVocalRemoved ? 1:0;
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secondary.SetAudioTrackToAsync(trackIndex);
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secondary.SetAudioTrack(trackIndex);
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OverlayForm.MainForm.ShowTopRightLabelTime(isVocalRemoved ? "無人聲" : "有人聲");
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}
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}
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@ -9,6 +9,7 @@
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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<UseWPF>true</UseWPF>
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<EnableWindowsTargeting>true</EnableWindowsTargeting>
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<ApplicationManifest>app.manifest</ApplicationManifest> <!-- 確保這一行引用了 manifest 文件 -->
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<UseWindowsForms>true</UseWindowsForms>
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<NoWarn>CS8618,CS8602,CS8622,CS8625,CS8600,CS8603,CS8601,CS8604,CS4014</NoWarn>
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