[gst-devel] Pipeline in a notebook tab

[Stefan Kost]

hi,

omar.crea at jusan.it wrote:
> Hi everybody.
> I have a question for you, naturally :-)
> I created an application for my Nokia N800 that uses the built-in camera to take
> photos, so I used a pipeline organized in this way to accomplish this task:
> 
> 
> gconfv4l2src --- YUV filter --- tee --- queue --- ffmpeg --- RGB filter
>                                  |                                 |
>                                  |                                 |
>                                  |                                 |
>                               ffmpeg --- xvimagesink            fakesink
> 
> 
> and I used this calls to connect the appropriate signals:
> 
> g_object_set (G_OBJECT (fakesink), "signal-handoffs", TRUE, NULL);
> g_signal_connect(fakesink, "handoff", G_CALLBACK(cb_handoff), NULL);
> g_signal_connect(screen, "expose-event", G_CALLBACK(expose), sink);
> 
> The pipeline is showed in a gtk_drawing_area() (screen) that is inside a tab of
> a notebook. I need to know what happens if I want to destroy the pipeline when
> I close its tab. I have to call only:
> 
> gst_element_set_state(pipeline, GST_STATE_NULL);
> gts_unref(pipeline);
  gst_unref(...)

yes that is enough.

> 
> or I have to safely disconnect the previously setted signals and riconnect them
> when I'll open the pipeline tab again?
> And if yes, how I can do this?
> 
> Another issue: when I create the pipeline with my start_pipeline() function, if
> I set its state to PAUSED it's all ok, but if I set it to the PLAYING state the
> xvimagesink is not included in the gtk_drawing_area but it appears in fullscreen
> mode, externally from my application...
>
Look at the gstxoverlay docs. You need to tell it about your xwindow.

Stefan

> 
> Thanks in advance. Omar
> 
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