The VideoLAN Forums

I managed to write a little Qt (5.2) application integrating libVlc for Android. The VLC media player can play a file stored on my Android device, but the actual picture is only displayed when I use callbacks and print each picture into some QWidget manually.

I'm looking for a way to let VLC paint the picture directly to some QWidget. For Windows, MacOS or Linux, one has to simply specify:

#ifdef Q_OS_WIN
libvlc_media_player_set_hwnd (_mp, (void *)winId());
#elif defined Q_OS_MAC
libvlc_media_player_set_nsobject(_mp, (void *)winId());
#else
libvlc_media_player_set_xwindow(_mp, winId());
#endif

How can that be done for Android?

I think you are mixing something. libVLC for Android is a Java API for use with Android.

Qt is a desktop toolkit that cannot exist on Android.

Actually, I'm not mixing things up. Qt does work on Android and I managed to write a Qt app that integrates the libVlc for Android. As I said, the only remaining problem is how to get the libVlc paint the pictures directly into some QWidget or similiar, and not manually within the callbacks. Big performance issue!

Well, it is not supported then.

My question is about vlc on android an where it paints its pictures by default. Judging from the sources, it seems as if it uses VOUT_ANDROID_SURFACE and not VOUT_OPEGLES2?

Once I figure that out, I might be able to see how Qt on Android handles the surface stuff and how I could work with Qt on Android in order to get the libVLC to paint the video that it does actually read and decod in the background.

The surface vout is directly dependent on the Java backend of VLC for Android.

Therefore there isn't like a "window" you can set, and hence this is virtually impossible without at least including the libVLC Java glue code.

You could be able to do it with the GLES2 video output, but this is FAR from being supported and ready.

Hello,
while I'm also playing around with vlc and Qt, and in the future I plan to make a small android app with this, it will be nice if somebody can push me here in the right direction; means how is this working together: Qt-LIBVLC-ANDROID

is there a reference player or example out

Georg

Simple, don't use Qt on Android.

and what is the alternative, i made my app under Qt for win/mac/linux and wanted to port it over easily to android

Georg

Using a native Androidsurface.

did you think about use Qt Quick 2 on android?

That does not alleviate the problem of video output, though.

maybe, but I have lib which can render video from libvlc to Qt Quick item. And I just want to check, will it be good enough to use it on android.

With vmem?

Nowhere close to as fast as Androidsurface native rendering.

yes, with vmem. I just want check it to be sure... It could be not so bad as you think.

And if it will be not absolutely bad, it could be created vlc plugin for output to qt quick item (it uses OpenGL ES).