wpf视频播放代码片段

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代码片段

wpf视频播放

Csharp Kelly 发布于：2024年05月16日更新于：2024年05月16日 70

这里用的VLC库，需要nuget引入Vlc.DotNet.Wpf,另外VideoLAN.LibVLC.Windows貌似不用引入也可以。
需要注意的：
	1 是需要把vlc播放器（libvlc文件夹，在百度网盘里找）拷贝到执行文件夹
	2 清空视频需要用 ThreadPool.QueueUserWorkItem(() => Player.SourceProvider.MediaPlayer.Stop());
前端代码：
```xml
<Window
    x:Class="MediaPlayer.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:local="clr-namespace:MediaPlayer"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    Title="MainWindow"
    Width="800"
    Height="450"
    mc:Ignorable="d">
    <Grid>
        <StackPanel HorizontalAlignment="Center" Orientation="Vertical">
            <StackPanel HorizontalAlignment="Center" Orientation="Horizontal">
                <Label HorizontalContentAlignment="Center" Content="视频" />
                <TextBox
                    x:Name="tbVideoFilePath"
                    Width="287"
                    Height="22">
                    <TextBox.Style>
                        <Style TargetType="TextBox">
                            <Style.Triggers>
                                <Trigger Property="Text" Value="">
                                    <Setter Property="Background">
                                        <Setter.Value>
                                            <VisualBrush
                                                AlignmentX="Left"
                                                AlignmentY="Center"
                                                Stretch="None">
                                                <VisualBrush.Visual>
                                                    <Border
                                                        Width="287"
                                                        Height="22"
                                                        Background="White">
                                                        <TextBlock
                                                            Margin="5"
                                                            VerticalAlignment="Center"
                                                            Foreground="Red"
                                                            Text="请选择视频" />
                                                    </Border>
                                                </VisualBrush.Visual>
                                            </VisualBrush>
                                        </Setter.Value>
                                    </Setter>
                                </Trigger>
                            </Style.Triggers>
                        </Style>
                    </TextBox.Style>
                </TextBox>
                <Button
                    Margin="14,0"
                    Click="selectVideo"
                    Content="选择视频" />
            </StackPanel>

</Border>

<StackPanel Margin="39,0" Orientation="Horizontal">
                    <StackPanel.Resources>
                        <Style x:Key="PlayerButtonStyle" TargetType="Button">
                            <Setter Property="Width" Value="30" />
                            <Setter Property="Height" Value="30" />
                            <Setter Property="Padding" Value="3" />
                            <Setter Property="BorderThickness" Value="0" />
                            <Setter Property="Margin" Value="1" />
                            <Setter Property="Background" Value="#4A4A4A" />
                        </Style>
                    </StackPanel.Resources>
                    <Button
                        x:Name="btnSkipToStart"
                        Click="btnSkipToStart_Click"
                        Content="SkipToStart"
                        IsEnabled="False" />
                    <Button
                        x:Name="btnBackwardRewind"
                        Click="btnBackwardRewind_Click"
                        Content="BackwardRewind"
                        IsEnabled="False" />
                    <Button
                        x:Name="btnPlay"
                        Click="btnPlay_Click"
                        IsEnabled="False">
                        <Button.Style>
                            <Style BasedOn="{StaticResource PlayerButtonStyle}" TargetType="Button">
                                <Setter Property="Content" Value="Play" />
                            </Style>
                        </Button.Style>
                    </Button>
                    <Button
                        x:Name="btnPause"
                        Click="btnPause_Click"
                        Visibility="Collapsed">
                        <Button.Style>
                            <Style TargetType="Button">
                                <Setter Property="Content" Value="Pause" />
                            </Style>
                        </Button.Style>
                    </Button>
                    <Button
                        x:Name="btnForwardRewind"
                        Click="btnForwardRewind_Click"
                        Content="ForwardRewind"
                        IsEnabled="False" />
                    <Button
                        x:Name="btnSkipToEnd"
                        Click="btnSkipToEnd_Click"
                        Content="SkipToEnd"
                        IsEnabled="False" />
                </StackPanel>

</StackPanel>
        </StackPanel>
    </Grid>
</Window>

```
后端代码：
```xml
using Microsoft.Win32;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Threading;
using Vlc.DotNet.Core.Interops.Signatures;
using Vlc.DotNet.Wpf;

namespace MediaPlayer
{
    public enum PlayerUserEnum
    {
        None,
        Staining,
        OcularSurface,
        Trial
    }

public class CustomRoutedEventArgs : RoutedEventArgs
    {
        public CustomRoutedEventArgs(RoutedEvent _event, object _para) : base(_event)
        {
            Parameter = _para;
        }
        public object Parameter { get; set; }
    }

public sealed class PlayerFactory
    {
        private static List<VlcControl> available = new List<VlcControl>();
        private static List<VlcControl> used = new List<VlcControl>();

static VlcControl osPlayer;
        static VlcControl stainingPlayer;
        static VlcControl trialPlayer;
        static PlayerFactory()
        {
            osPlayer = new VlcControl();
            var vlcLibDirectory = new DirectoryInfo(System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "libvlc", IntPtr.Size == 4 ? "win-x86" : "win-x64"));
            osPlayer.SourceProvider.CreatePlayer(vlcLibDirectory, new string[] { });

stainingPlayer = new VlcControl();
            var vlcLibDirectory2 = new DirectoryInfo(System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "libvlc", IntPtr.Size == 4 ? "win-x86" : "win-x64"));
            stainingPlayer.SourceProvider.CreatePlayer(vlcLibDirectory2, new string[] { });

trialPlayer = new VlcControl();
            var vlcLibDirectory3 = new DirectoryInfo(System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "libvlc", IntPtr.Size == 4 ? "win-x86" : "win-x64"));
            trialPlayer.SourceProvider.CreatePlayer(vlcLibDirectory3, new string[] { });
        }

public static VlcControl GetStaining() { return stainingPlayer; }

public static VlcControl GetOS() { return osPlayer; }

public static VlcControl GetTrial() { return trialPlayer; }

public static VlcControl Get()
        {

if (available.Count == 0)
            {

VlcControl vlcControl = new VlcControl();
                var vlcLibDirectory = new DirectoryInfo(System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "libvlc", IntPtr.Size == 4 ? "win-x86" : "win-x64"));
                vlcControl.SourceProvider.CreatePlayer(vlcLibDirectory, new string[] { });
                available.Add(vlcControl);
            }
            VlcControl vlc = available.First();
            available.RemoveAt(0);
            used.Add(vlc);
            return vlc;
        }

public static void Release(VlcControl playerVlc)
        {
            ThreadPool.QueueUserWorkItem(_ => { playerVlc.SourceProvider.MediaPlayer.Stop(); });
        }
    }
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            SetPlayer();
        }

string currentVideoFileName = "";

public PlayerUserEnum PlayerUserType
        {
            get { return (PlayerUserEnum)GetValue(PlayerUserTypeProperty); }
            set { SetValue(PlayerUserTypeProperty, value); }
        }

// Using a DependencyProperty as the backing store for PlayerUserType.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty PlayerUserTypeProperty =
            DependencyProperty.Register("PlayerUserType", typeof(PlayerUserEnum), typeof(MainWindow), new PropertyMetadata(PlayerUserEnum.None, OnPlayerUserTypeChanged));

private static void OnPlayerUserTypeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (d is MainWindow vlc)
            {
                if (vlc.PlayerUserType == PlayerUserEnum.Staining)
                {
                    vlc.Player = PlayerFactory.GetStaining();
                }
                else if (vlc.PlayerUserType == PlayerUserEnum.OcularSurface)
                {
                    vlc.Player = PlayerFactory.GetOS();
                }
                else if (vlc.PlayerUserType == PlayerUserEnum.Trial)
                {
                    vlc.Player = PlayerFactory.GetTrial();
                }

if (vlc.Player.Parent != null)
                {
                    StackPanel parent = vlc.Player.Parent as StackPanel;
                    parent.Children.Remove(vlc.Player);
                }
                vlc.VlcPlayerContainer.Children.Add(vlc.Player);
            }
        }

internal VlcControl Player;

public void SetPlayer()
        {
            Player = PlayerFactory.GetOS(); // 随便选的一个播放器

if (Player.Parent != null)
            {
                StackPanel parent = Player.Parent as StackPanel;
                parent.Children.Remove(Player);
            }
            VlcPlayerContainer.Children.Add(Player);
        }

public void ReleasePlayer()
        {
            PlayerFactory.Release(Player);
            tbVideoFilePath.Text = string.Empty;

btnPlay.Visibility = Visibility.Visible;
            btnPause.Visibility = Visibility.Collapsed;

btnPlay.IsEnabled = false;
            btnBackwardRewind.IsEnabled = false;
            btnForwardRewind.IsEnabled = false;
            btnSkipToEnd.IsEnabled = false;
            btnSkipToStart.IsEnabled = false;
        }
        public override void BeginInit()
        {
            base.BeginInit();
        }

protected override void OnInitialized(EventArgs e)
        {
            base.OnInitialized(e);
        }

private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            if (Player != null)
            {
                Player.SourceProvider.MediaPlayer.EndReached += MediaPlayer_EndReached;
                Player.SourceProvider.MediaPlayer.PositionChanged += MediaPlayer_PositionChanged;
                Player.SourceProvider.MediaPlayer.EncounteredError += MediaPlayer_EncounteredError;
            }
        }

private void MediaPlayer_EncounteredError(object? sender, Vlc.DotNet.Core.VlcMediaPlayerEncounteredErrorEventArgs e)
        {
            //LpSeriLog.Error("播放器报错");
            //LpSeriLog.Error(sender);
        }

private DispatcherTimer dispatcherTimer = new DispatcherTimer();
        /// <summary>
        /// 获取进度
        /// </summary>
        public void Init_Timer()
        {
            if (!dispatcherTimer.IsEnabled)
            {
                dispatcherTimer.Interval = TimeSpan.FromMilliseconds(100);
                dispatcherTimer.Tick += new EventHandler((sender, e) =>
                {
                    timeSlider.Value = Convert.ToInt32(Player.SourceProvider.MediaPlayer?.Position * 100);
                    //PayTime.Text = TimeSpan.FromMilliseconds(VlcPlayer.SourceProvider.MediaPlayer.Time).ToString().Substring(0,8);//获取播放当前时间
                });
                dispatcherTimer.IsEnabled = true;
            }
        }

private void MediaPlayer_PositionChanged(object? sender, Vlc.DotNet.Core.VlcMediaPlayerPositionChangedEventArgs e)
        {
            SetPlayStatus();
        }

private void SetPlayStatus()
        {
            App.Current.Dispatcher.Invoke(() =>
            {
                MediaStates status;
                if (Player.SourceProvider.MediaPlayer is null)
                    status = MediaStates.Stopped;
                else
                    status = Player.SourceProvider.MediaPlayer.State;
                switch (status)
                {
                    case MediaStates.Playing:
                        btnPlay.Visibility = Visibility.Collapsed;
                        btnPause.Visibility = Visibility.Visible;
                        break;
                    case MediaStates.Paused:
                    case MediaStates.Stopped:
                    case MediaStates.Ended:
                        btnPlay.Visibility = Visibility.Visible;
                        btnPause.Visibility = Visibility.Collapsed;
                        break;
                    case MediaStates.Error:
                        btnPlay.Visibility = Visibility.Visible;
                        btnPause.Visibility = Visibility.Collapsed;
                        //Lepu.OkLens.Common.LpSeriLog.Error("播放器状态错误 MediaStates.Error");
                        break;
                }

});
        }

private void MediaPlayer_EndReached(object? sender, Vlc.DotNet.Core.VlcMediaPlayerEndReachedEventArgs e)
        {
            SetPlayStatus();
            btnPlay.Dispatcher.Invoke(() =>
            {
                btnPlay.IsEnabled = false;
                btnBackwardRewind.IsEnabled = false;
                btnForwardRewind.IsEnabled = false;
                btnSkipToEnd.IsEnabled = false;
                btnSkipToStart.IsEnabled = false;
                tbVideoFilePath.Text = "";
            });
            //VlcPlayer.SourceProvider.MediaPlayer.Position = 0;
            //VlcPlayer.SourceProvider.MediaPlayer.Play();
            //VlcPlayer.SourceProvider.MediaPlayer.Stop();
            //VlcPlayer.SourceProvider.MediaPlayer.ResetMedia();

//VlcPlayer.SourceProvider.MediaPlayer.Play(videoFile);
            //VlcPlayer.SourceProvider.MediaPlayer.Stop(); 不动了
        }

#region prodpd

public bool ResetVideo
        {
            get { return (bool)GetValue(ResetVideoProperty); }
            set { SetValue(ResetVideoProperty, value); }
        }

// Using a DependencyProperty as the backing store for ResetVideo.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ResetVideoProperty =
            DependencyProperty.Register("ResetVideo", typeof(bool), typeof(MainWindow), new PropertyMetadata(false, OnResetVideoCallback));

private static void OnResetVideoCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (d is MainWindow playerVlc && e.NewValue is bool resetVideo && resetVideo)
            {
                ThreadPool.QueueUserWorkItem((WaitCallback)((a) =>
                {
                    if (playerVlc.Player.SourceProvider.MediaPlayer.CouldPlay)
                    {
                        playerVlc.Player.SourceProvider.MediaPlayer.Position = 1;
                        if (playerVlc.Player.SourceProvider.MediaPlayer.IsPlaying())
                            playerVlc.Player.SourceProvider.MediaPlayer.Pause();
                    }
                }));
            }
        }

/// <summary>
        /// 超出设置的图片
        /// </summary>
        public bool ExceedPictureNumFixed
        {
            get { return (bool)GetValue(ExceedPictureNumFixedProperty); }
            set { SetValue(ExceedPictureNumFixedProperty, value); }
        }

// Using a DependencyProperty as the backing store for HasError.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ExceedPictureNumFixedProperty =
            DependencyProperty.Register("ExceedPictureNumFixed", typeof(bool), typeof(MainWindow), new PropertyMetadata(false));

public bool ClearMediaPath
        {
            get { return (bool)GetValue(ClearMediaPathProperty); }
            set { SetValue(ClearMediaPathProperty, value); }
        }

// Using a DependencyProperty as the backing store for MediaPath.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty ClearMediaPathProperty =
            DependencyProperty.Register("ClearMediaPath", typeof(bool), typeof(MainWindow), new PropertyMetadata(false, OnClearMediaPathChanged));

private static void OnClearMediaPathChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (d is MainWindow playerWrapper)
            {
                if (e.NewValue is false) return;
                try
                {
                    playerWrapper.ClearMediaPath = !playerWrapper.ClearMediaPath;
                }
                catch (Exception ex)
                {
                    //LpSeriLog.Error(ex);
                    MessageBox.Show(ex.Message);
                }
                playerWrapper.SetPlayStatus();
            }
        }

#endregion

#region events
        public static readonly RoutedEvent SelectFrameEvent = EventManager.RegisterRoutedEvent("SelectFrame", RoutingStrategy.Direct, typeof(RoutedEventHandler), typeof(MainWindow));

public event RoutedEventHandler SelectFrame
        {
            add { AddHandler(SelectFrameEvent, value, false); }
            remove { RemoveHandler(SelectFrameEvent, value); }
        }

protected virtual void OnSelectFrame(string selectedFramePath)
        {
            RaiseEvent(new CustomRoutedEventArgs(SelectFrameEvent, selectedFramePath));
        }
        #endregion

string videoFile = "";
        private void selectVideo(object sender, System.Windows.RoutedEventArgs e)
        {
            try
            {
                ThreadPool.QueueUserWorkItem((WaitCallback)(_ => { this.Player.SourceProvider.MediaPlayer.Stop(); }));

OpenFileDialog ofd = new OpenFileDialog();
                ofd.Filter = "视频文件(*.avi,*.mp4)|*.avi;*.mp4";
                ofd.ValidateNames = true;
                ofd.CheckFileExists = true;
                ofd.CheckPathExists = true;
                if (ofd.ShowDialog()!.Value)
                {
                    tbVideoFilePath.Text = ofd.FileName;
                    //if (VlcPlayer.SourceProvider.MediaPlayer.IsPlaying())
                    //{
                    //    VlcPlayer.SourceProvider.MediaPlayer.Pause();
                    //}
                    //VlcPlayer.SourceProvider.MediaPlayer.ResetMedia();
                    Player.SourceProvider.MediaPlayer.Play(new FileInfo(ofd.FileName), new string[] { "input-repeat=65535" });
                    videoFile = ofd.FileName;
                    btnPlay.Visibility = Visibility.Collapsed;
                    btnPause.Visibility = Visibility.Visible;

btnPlay.IsEnabled = true;
                    btnBackwardRewind.IsEnabled = true;
                    btnForwardRewind.IsEnabled = true;
                    btnSkipToEnd.IsEnabled = true;
                    btnSkipToStart.IsEnabled = true;

currentVideoFileName = ofd.SafeFileName.Split('.').First();
                    SetPlayStatus();
                }
                else
                {

}
            }
            catch (Exception ex)
            {
                //LpSeriLog.Error(ex);
                MessageBox.Show(ex.Message);
            }
        }
        private void timeSlider_MouseUp(object sender, MouseButtonEventArgs e)
        {
            if (Player.SourceProvider.MediaPlayer == null)
            {
                return;
            }

double mousePositionX = e.GetPosition(timeSlider).X;
            double width = timeSlider.ActualWidth;
            timeSlider.Value = (int)(mousePositionX / width * timeSlider.Maximum);
            Player.SourceProvider.MediaPlayer.Position = float.Parse(timeSlider.Value.ToString()) / 100;
        }

private void timeSlider_DragCompleted(object sender, System.Windows.Controls.Primitives.DragCompletedEventArgs e)
        {

if (Player.SourceProvider.MediaPlayer == null)
            {
                return;
            }
            Player.SourceProvider.MediaPlayer.Position = (float)timeSlider.Value / 100;
            dispatcherTimer.Stop();
        }

MediaStates playerStatusWhileDrag;
        private void timeSlider_DragStarted(object sender, System.Windows.Controls.Primitives.DragStartedEventArgs e)
        {
            playerStatusWhileDrag = Player.SourceProvider.MediaPlayer.State;
            Player.SourceProvider.MediaPlayer.Pause();
            if (playerStatusWhileDrag == MediaStates.Playing)
            {
                dispatcherTimer.Start();
            }
        }

bool isPlaying;

private void btnSkipToStart_Click(object sender, RoutedEventArgs e)
        {
            if (Player.SourceProvider.MediaPlayer == null)
            {
                return;
            }

if (Player.SourceProvider.MediaPlayer.IsPlaying())
            {
                Player.SourceProvider.MediaPlayer.Pause();
            }
            Player.SourceProvider.MediaPlayer.Position = 0f;
        }

private void btnForwardRewind_Click(object sender, RoutedEventArgs e)
        {
            if (Player.SourceProvider.MediaPlayer == null)
            {
                return;
            }

float cur_time = Player.SourceProvider.MediaPlayer.Position;
            cur_time += 0.01f;
            if (cur_time >= 1)
            {
                return;
            }
            Player.SourceProvider.MediaPlayer.Position = cur_time;
        }

private void btnPlay_Click(object sender, RoutedEventArgs e)
        {
            if (Player.SourceProvider.MediaPlayer == null)
            {
                return;
            }
            btnPlay.Visibility = Visibility.Collapsed;
            btnPause.Visibility = Visibility.Visible;
            if (Player.SourceProvider.MediaPlayer.IsPlaying())
                return;

Player.SourceProvider.MediaPlayer.Play();
        }

private void btnBackwardRewind_Click(object sender, RoutedEventArgs e)
        {
            if (Player.SourceProvider.MediaPlayer == null)
            {
                return;
            }

float cur_time = Player.SourceProvider.MediaPlayer.Position;
            cur_time -= 0.01f;
            if (cur_time <= 0)
            {
                return;
            }
            Player.SourceProvider.MediaPlayer.Position = cur_time;
        }

private void btnSkipToEnd_Click(object sender, RoutedEventArgs e)
        {
            if (Player.SourceProvider.MediaPlayer == null)
            {
                return;
            }
            Player.SourceProvider.MediaPlayer.Position = 1 - 1 / (Player.SourceProvider.MediaPlayer.FramesPerSecond * Player.SourceProvider.MediaPlayer.Length / 1000) - 0.001f;
        }

private void btnPause_Click(object sender, RoutedEventArgs e)
        {
            if (Player.SourceProvider.MediaPlayer == null)
                return;
            if (!Player.SourceProvider.MediaPlayer.IsPlaying())
            {
                return;
            }

Player.SourceProvider.MediaPlayer.Pause();
            btnPlay.Visibility = Visibility.Visible;
            btnPause.Visibility = Visibility.Collapsed;
        }
    }
}
```

这里⇓感觉得写点什么，要不显得有点空，但还没想好写什么... 返回顶部