A question about multiple players

[David Ing]

I do not use `gst_parse_launch`, `gst_bus_add_watch`, or anything related
to GMainLoop.  I am not familiar enough to give you stronger advice.

You might want to look through the samples and tutorials (many of which use
a GMailLoop) if you haven't done that already.



On Fri, Sep 6, 2019 at 2:08 PM Ben Rush <ben at ben-rush.net> wrote:

> Do I need a different context for each main loop? Do the steps leading up
> to 8 look okay?
>
> Your advice about the PDBs was invaluable today, by the way. When I track
> all bits of this down I'll send out an update.
>
>
> On Fri, Sep 6, 2019, 3:51 PM David Ing <ding at panopto.com> wrote:
>
>> Steps 8-10 are in the correct order (my code does it that way).
>>
>> But I don't have a step 11 because I don't use a GMainLoop.  I would
>> guess that the main loop should stop before step 8 but I am only guessing.
>>
>> On Fri, Sep 6, 2019 at 1:32 PM Ben Rush <ben at ben-rush.net> wrote:
>>
>>> I have a need to put multiple video windows in a single application.
>>> This means multiple pipelines. For example, the RTSP URL is different for
>>> each player, and so I get a new pipeline for each invocation
>>> of gst_parse_launch.
>>>
>>> I can share code, but in general: what is the best way to do this? The
>>> way I'm doing this now (for EACH player I've instantiated in the SAME app):
>>>
>>> 1) gst_parse_launch, get back the pipeline,
>>> 2) gst_pipeline_get_bus, to create a bus on this pipeline.
>>> 3) g_main_loop_new(NULL, FALSE) to create a new loop (this is where my
>>> main question is at)
>>> 4) gst_bus_add_watch to create an add watch on this pipeline,
>>> 5) gst_element_set_state to set my pipeline state to GST_STATE_PLAYING
>>> 6) g_main_loop_run on the loop returned from #3
>>> 7) Then I play until a stop is issued....
>>> 8) gst_element_set_state(pipeline, GST_STATE_NULL)
>>> 9) unref the bus,
>>> 10) unref the pipeline
>>> 11) unref the loop
>>>
>>> I ask about this order, and the fact I'm creating a new loop without an
>>> independent context because I'm getting some random crashes in my app
>>> hosting multiple players, and it appears to be during tear down. In
>>> general, is this pattern acceptable, or have I committed a sin somewhere?
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org
>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>> _______________________________________________
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>> gstreamer-devel at lists.freedesktop.org
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>
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