我目前正在开发一个独立的应用程序,该应用程序可以处理来自移动设备的通信,还可以利用VLC播放器输出流。我这样做的方法是输出流对象在主窗口中,但是我通过SignalR接收请求。该请求非常简单-它只是一个字符串。问题是我不知道如何将字符串从SignalR集线器传递回MediaPlayer对象。如何获得将字符串传递到外部对象或使媒体播放器在集线器内部“持久”的方式?现在我有关它的代码看起来像这样:
中心:
[HubName("CommHub")]
public class CommHub:Hub
{
VLCControl outputplayer = new VLCControl();
public void RequestConnectionsList()
{
var databasePath = "--dbpath here--";
var db = new SQLiteConnection(databasePath);
List<string> output = db.Table<VideoSources>().Select(p => p.Name).ToList(); //Gets names from the db
Clients.Client(Context.ConnectionId).CamsInfo(output); //send available connection names to client
}
public void RequestOutStream(string requestedName) //this function is called but i have no idea how to make it work
{
outputplayer.playSelected(requestedName);
}
}
VLCControl:
class VLCControl
{
public Media rtsp;
private const string VIDEO_URL = "rtsp://wowzaec2demo.streamlock.net/vod/mp4:BigBuckBunny_115k.mov";
private MediaPlayer player;
public static string GetConfigurationString() //using this method in mainwindow player as well
{
string address = Properties.Settings.Default.LocalAddress;
string port = Properties.Settings.Default.LocalPort;
string result=
":sout=#duplicate" +
"{dst=display{noaudio}," +
"dst=rtp{mux=ts,dst=" + address +
",port=" + port + ",sdp=rtsp://" + address + ":" + port + "/go.sdp}";
return result;
}
public void playSelected(string inputAddress)
{
var databasePath = "D:\\Projects\\Sowa\\Sowa\\Serwer\\VideoSources.db";
var db = new SQLiteConnection(databasePath);
string input = db.Table<VideoSources>().FirstOrDefault(p => p.Name == "test").Address;
db.Close();
var rtsp = new Media(MainWindow._libvlc, input, FromType.FromLocation);
rtsp.AddOption(VLCControl.GetConfigurationString());
player.Stop();
player.Play(new Media(MainWindow._libvlc, VIDEO_URL, FromType.FromLocation));
}
}
播放器肯定在工作-当我在mainwindow中创建一个媒体播放器时,它的确按预期输出。
我认为您的问题可以改写为“如何从SignalR集线器在UI上调用方法”
为此,您有几种选择:
(MyWindow)Application.Current.MainWindow
进入主窗口。然后,您该怎么做取决于您]public static class ViewAccessor {
public static MyView View { get; set; }
}
在您的视图构造函数中,在InitializeComponents之后:
ViewAccessor.View = this;
在您的中心:
ViewAccessor.View.Play(...);