[vlc-devel] CLI Bindings : AccessViolationException on player

[Developer]

Damien wrote:
>
>     Try this code please:
>
>     (1. _VLC is a local global/private variable)
>     (2.  Change the appropriate opts items to match yours)
>     (3.  Call Initialize)
>     (4.  Call PlayVideo (filename,windowhandle,""))
>
>
> I have copied your code (altering it to match bindings in vlc git). 
> Here it is :
> --8<----8<----8<----8<----8<----8<--
>     public partial class Form1 : Form
>     {
>         private VLC _VLC;
>         private bool _VLCDebug;
>         private string _VLCPath;
>         private string _VLCPluginPath;
>         private bool _IsRunning = false;
>
>         internal Form1(string vlcPath, string vlcPlugins)
>         {
>             InitializeComponent();
>             this._VLCPath = vlcPath;
>             this._VLCPluginPath = vlcPlugins;
>         }
>
>         private void Form1_Shown(object sender, EventArgs e)
>         {
>             this.Initialize(true);
>             this.PlayVideo("D:\\a.avi", this.Handle, string.Empty);
>         }
>
>         public bool Initialize(bool DebugOn)
>         {
>             _VLCDebug = DebugOn;
>             string[] opts = { "-I", "dummy", "--plugin-path=" + 
> _VLCPluginPath, "--one-instance" };
>             string[] optsdebug = { "-I", "dummy", "--plugin-path=" + 
> _VLCPluginPath, "-vvv", "--extraintf=logger", 
> "--logfile=D:\\VlcLog.txt" };
>             try
>             {
>                 if (_VLCDebug)
>                 {
>                     _VLC = new VLC(optsdebug);
>                 }
>                 else
>                 {
>                     _VLC = new VLC(opts);
>                 }
>                 _IsRunning = true;
>             }
>             catch (Exception ex)
>             {
>                 _IsRunning = false;
>             }
>             return _IsRunning;
>         }
>
>         private void PlayVideo(string fn, IntPtr playwindow, string 
> EncodeOption)
>         {
>             Media mx = new Media(_VLC, fn);
>             if (!string.IsNullOrEmpty(EncodeOption))
>                 mx.AddOptions(EncodeOption, true);
>             //Note: You may set playwindow = intptr.zero, which will 
> just encode your file/not show it
>             Player player = new Player(_VLC);
>             player.Media = mx;
>             this.Text = mx.Location;
>             mx.Dispose();
>             player.Play();
>         }
>     }
> --8<----8<----8<----8<----8<----8<--
>
>
You didnt transpose properly.....

I see a couple issues:

_VLC = new VideoLan.VideoLanClient(_VLCPath, optsdebug);  <-- I specify 
the path, you do not


VideoLan.VlcMedia mx = _vlc.NewMedia(fn);

and

VideoLan.VlcMediaPlayer cplayer = _VLC.NewMediaPlayer(playwindow);

I derive my COM objects directly from the instantiated _VLC.

You derive them as NEW and point to _VLC... I am not sure if this could 
be posing an issue or not (one would think not, but then again it is 
just code...... and could have a bug)

****   and lastly... the big one:      *****

Player player = new Player(_VLC);

you should be using playwindow(the handle to your window) here:

Player player = new Player(playwindow);




shawn

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.videolan.org/pipermail/vlc-devel/attachments/20091210/7833ffe7/attachment.html>