Re: designing a wrapper lib

[Wim Taymans <wim taymans chello be>]

On Wed, 2002-09-18 at 22:27, Joe Shaw wrote:
> On Wed, 2002-09-18 at 16:02, Wim Taymans wrote:
> > Jorn, you're designing an app.
> > 
> > Allow me to make this little analogy (with flaws, as with all analogies,
> > but you'll get the point).
> > 
> > pretend: GStreamer~=GDK/GTK
> > 
> > Are you saying that my (one of my mid-term goals) VirtualDub clone
> > should use that single library of yours? I can give you some of my
> > requirements then... Are you also saying that my (one of my long-term
> > goals) NLE library should use that single library of yours too? 
> 
> We don't need a single all-singing, all-dancing wrapper library, but we
> do need wrappers for something as simple as, say "play a sound".  I
> don't want to have to deal with sinks and pipelines and all that.  I
> just want to play a .wav file or a .ogg file or whatever when a user
> clicks a button.
> 
> It would be nice if we had a nice generic video widget so all I had to
> do would be:
> 
>         GtkWidget *window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>         GtkWidget *video = gnome_video_new ("pants.mpg");
>         
>         gtk_container_add (GTK_CONTAINER (window), video);
>         gtk_widget_show_all (window);
>         
>         gnome_video_play (GNOME_VIDEO (video));
>         
>         gtk_main ();

as taken from main.c of the gst-player:

        GstMediaPlay *mplay;
        GtkWidget *window;

        gst_init (&argc, &argv);
        gnome_init (PACKAGE, VERSION, argc, argv);

        window = gnome_app_new ("gst-player", "GStreamer Player");

        mplay = gst_media_play_new ();
        gnome_app_set_contents (GNOME_APP (window), GTK_WIDGET(mplay));

        gst_media_play_set_location (mplay, "pants.mpg");

        gtk_widget_show_all (window);

        gst_media_play_set_state (mplay, GST_STATE_PLAYING);

        gtk_main ();

Granted, this thing has a seekbar and play/pause/stop buttons too in the
widget (that can be disabled). GstMediaPlay is build on top of GstPlay,
which is just a GObject, so it requires a GtkPlug to embed the window
(but allows for a KDE/Qt based player). 

Wim