AW: dvbbasebin and tcpserversink

Bernhard Graaf bernhard.graaf at gmx.de
Fri Feb 18 10:03:23 PST 2011


Hi Luis,

not the right answer for your question:
Yes it works with the pipe (I'm wondering also) giving the pipe a int value. It works with 17501 and "17501".
-------- Original-Nachricht --------
> Datum: Fri, 18 Feb 2011 18:52:11 +0100
> Von: "Bernhard Graaf" <bernhard.graaf at gmx.de>
> An: "\'Discussion of the development of and with GStreamer\'" <gstreamer-devel at lists.freedesktop.org>
> Betreff: AW: dvbbasebin and tcpserversink

> Hi Luis,
> 
> Yes, it seems to be correct, because if I use the value as 'int' I'll get
> a
> 'Segmentation fault' at runtime.
> 
> But thanks a lot for answering!!
> 
> -----Ursprüngliche Nachricht-----
> Von: gstreamer-devel-bounces+bernhard.graaf=gmx.de at lists.freedesktop.org
> [mailto:gstreamer-devel-bounces+bernhard.graaf=gmx.de at lists.freedesktop.org]
> Im Auftrag von Luis de Bethencourt
> Gesendet: Freitag, 18. Februar 2011 18:25
> An: Discussion of the development of and with GStreamer
> Betreff: Re: dvbbasebin and tcpserversink
> 
> On Fri, Feb 18, 2011 at 1:22 PM, Bernhard Graaf <bernhard.graaf at gmx.de>
> wrote:
> > Hi,
> >
> > I'm a new gstreamer developer and have a small problem with a simple
> pipe.
> > If I'm use the pipe:
> > "gst-launch-0.10 -m dvbbasebin adapter=1 frequency=12544000
> > program-numbers=17501 polarity=h symbol-rate=22000 ! tcpserversink
> > port=8080"
> >
> > Then I can see the program (for e.g. with vlc tcp://192.168.1.102:8080)
> >
> > If I try to do the same in C-code
> > --------
> > int
> > main ()
> > {
> >   GMainLoop *loop;
> >
> >   GstElement *pipeline, *source, *sink;
> >   GstBus *bus;
> >
> >   gst_init (NULL, NULL);
> >
> >   loop = g_main_loop_new (NULL, FALSE);
> >
> >   pipeline = gst_pipeline_new ("DVB-Streamer");
> >   source   = gst_element_factory_make ("dvbbasebin",      
> "dvb-source");
> >   sink     = gst_element_factory_make ("tcpserversink",
> "tcp-output");
> >
> >   if (!pipeline || !source || !sink) {
> >     g_printerr ("One element could not be created. Exiting.\n");
> >     if(!pipeline) g_printerr("Pipeline not created\n");
> >     else if(!source) g_printerr("Source not created\n");
> >     else if(!sink) g_printerr("Sink not created\n");
> >     return -1;
> >   }
> >
> >   g_object_set (G_OBJECT (source), "adapter", 1, NULL);
> >   g_object_set (G_OBJECT (source), "frequency", 12544000, NULL);
> >   g_object_set (G_OBJECT (source), "program-numbers", "17501", NULL);
> 
> So gst-inspect-0.10 tells me that the program-numbers property is a
> string with the following definition...
>   program-numbers     : Colon separated list of programs
>                         flags: readable, writable
>                         String. Default: "" Current: ""
> 
> In your manual pipeline above you set it as a int 17501 instead of a
> string "17501".
> Does it work with the string version?
> Are these meant to be program names or process id's?
> 
> Luis
> 
> 
> >   g_object_set (G_OBJECT (source), "polarity", "h", NULL);
> >   g_object_set (G_OBJECT (source), "symbol-rate", 22000, NULL);
> >   g_object_set (G_OBJECT (sink), "port", 8080, NULL);
> >
> >   bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
> >   gst_bus_add_watch (bus, bus_call, loop);
> >   gst_object_unref (bus);
> >
> >   gst_bin_add_many (GST_BIN (pipeline),
> >                     source, sink, NULL);
> >
> >   gst_element_link (source, sink);
> >
> >   g_print ("Now playing: ");
> >   gst_element_set_state (pipeline, GST_STATE_PLAYING);
> >
> >   g_print ("Running...\n");
> >   g_main_loop_run (loop);
> >
> >   return 0;
> > }
> >
> > ----
> >
> > I got the error:
> >
> > Now playing: Running...
> > Error: Interner Fehler im Datenfluss.
> > (sorry for the German error. it's call something like "Internal error in
> > data stream")
> >
> > If I don't use the
> >
> > g_object_set (G_OBJECT (source), "program-numbers", "17501", NULL);
> >
> > It's running well, but I need this parameter
> >
> > Thanks a lot for helping!!
> >
> >
> > .
> >
> > _______________________________________________
> > gstreamer-devel mailing list
> > gstreamer-devel at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >
> >
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